Performance

Description:

The performance of a SPARQL endpoint is crucial for any application using this service. SPARQLES thus performs some tests to estimate the performance of an endpoint relative to other endpoints. In particular, we run a variety of ASK, JOIN and LIMIT queries against endpoints. These queries are designed to estimate performance in a comparable way.

ASK queries are single-triple pattern queries with a mix of constants in all positions. For example, the ASK_SP query is ASK { ?z } , where and are replaced with random URIs for each pair of COLD/WARM runs such that the URIs should not appear in the remote data. We run ASK_S, ASK_P, ASK_O, ASK_SP, ASK_PO, ASK_SO, ASK_SPO queries.

JOIN queries invoke a fixed number of join lookups in the remote engine for three different positions. For example, a JOIN_SS query would be SELECT DISTINCT ?s ?p2 WHERE { ?s ?p ?o . OPTIONAL {?s ?p2 .} } LIMIT 1000, where is replaced with a random URI for each pair of COLD/WARM runs. Even though does not exist in the remote data, the use of optional forces the engine to run the join, making the performance comparable across endpoints with different content (assuming 1000 results are returned).

We also run LIMIT queries of the form SELECT * WHERE { ?s ?p ?o } LIMIT 100002 to test the throughput of raw results. Although for brevity we do not report the performance of such queries here, we do report the result-size thresholds detected using this query.

The results presented here are the mean COLD/WARM performance for each group of queries (e.g., the mean of the seven ASK queries and the mean of three JOIN queries) for the last run of the performance experiments.

Performance experiments are run on a daily basis.

31.3% (36/115) of the available endpoints are suspected to enforce a result-size threshold
10,000 is the most common result-size threshold
SPARQL Endpoint Result-size thresholds

ASK queries mean runtime

(Cold-Warm)

Join queries mean runtime

(Cold-Warm)

http://visualdataweb.infor.uva.es/sparql (2)
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A Short Biographical Dictionary of English Literature (RKBExplorer)
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AEMET metereological dataset 10,000 0.08-0.08 s 8.8-8.28 s
AGRIS
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AGROVOC
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AGROVOC
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ALPINO RDF Treebank
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AMOn+: Cultural Variations in Interpersonal Communication Ontology
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ARIADNE
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ASN:US
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AUEB Linked Open Data
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Academic Bibliography data available from Acta Cryst E
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Academic Offer of UNL
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Accommodations in Piedmont (LinkedOpenData.it)
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Accommodations in Tuscany (LinkedOpenData.it)
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AgriNepalData
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Airport data from Our Airports published as RDF
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Alexandria Digital Library (ADL) Gazetteer
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Allie Abbreviation And Long Form Database in Life Science 0.42-0.36 s 2.12-1.92 s
Alpine Ski Racers of Austria
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Amsterdam Museum as Linked Open Data in the Europeana Data Model
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AragoDBPedia 10,000 0.34-0.32 s 3.08-3 s
Archives Hub Linked Data 0.1-0.08 s 2.69-2.63 s
Aristotle University
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Association for Computing Machinery (ACM) (RKBExplorer)
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Auckland Museum Collections Online
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Australian Bureau of Statistics (ABS) Linked Data
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Australian Climate Observations Reference Network - Surface Air Temperature Dataset
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B3Kat - Library Union Catalogues of Bavaria, Berlin and Brandenburg 0.07-0.07 s 0.18-0.16 s
http://api.talis.com/stores/bbc-backstage/services/sparql (2)
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BBC Wildlife Finder
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http://dati.camera.it/sparql (2) 10,000 0.07-0.14 s 1.85-1.82 s
BabelNet
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Bank for International Settlements (BIS) Linked Data
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Bdgp
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BibBase
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Bio2RDF::ACFSID
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Bio2RDF::Affymetrix 0.26-0.06 s 15.9-16.12 s
Bio2RDF::BioModels::BioPAX
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Bio2RDF::Biomodels
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Bio2RDF::Bioportal
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Bio2RDF::Chembl
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Bio2RDF::Clinicaltrials
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Bio2RDF::Ctd
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Bio2RDF::Dbsnp
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Bio2RDF::Drugbank
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Bio2RDF::GenBank
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Bio2RDF::Genage
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Bio2RDF::Gendr
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Bio2RDF::Goa
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Bio2RDF::Hgnc
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Bio2RDF::Homologene
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Bio2RDF::INOH
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Bio2RDF::Interpro
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Bio2RDF::Iproclass
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Bio2RDF::Irefindex
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Bio2RDF::KEGG
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Bio2RDF::KEGG::BioPAX
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Bio2RDF::Linkedspl
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Bio2RDF::Lsr
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Bio2RDF::Mesh
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Bio2RDF::Orphanet
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Bio2RDF::PID
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Bio2RDF::Pathwaycommons
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Bio2RDF::PharmGKB::BioPAX
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Bio2RDF::Pharmgkb
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Bio2RDF::PubChem
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Bio2RDF::Pubmed
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Bio2RDF::Reactome
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Bio2RDF::Rhea
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Bio2RDF::SPIKE
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Bio2RDF::Sabiork
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Bio2RDF::Sgd
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Bio2RDF::Sider
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Bio2RDF::Taxonomy
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Bio2RDF::Wikipathways
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Bio2RDF::Wormbase
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Bio2RDF::neXtProt
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BioModels RDF 0.36-0.37 s 0.47-0.5 s
BioSamples RDF
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Biographical Directory of the United States Congress
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BizkaiSense
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Bricklink
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British Museum Collection
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http://bnb.data.bl.uk/sparql (2) 0.32-0.32 s 1.19-1.48 s
Budapest University of Technology and Economics (RKBExplorer)
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Bundesamt für Statistik (BFS) - Swiss Federal Statistical Office (FSO) Linked Data
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BundestagNebeneinkuenfte
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COD inventory
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CODE Endpoint
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COLINDA - Conference Linked Data 0.18-0.22 s 0.17-0.18 s
COLINDA - Conference Linked Data 0.11-0.11 s 0.14-0.13 s
CORE - Semantic Similarity of Open Access publications
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CORS Check - HTTP Header Logs for Linked Open Data
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CPV 2003
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CRTM 10,000 0.14-0.08 s 11.93-12.01 s
CTIC Public Dataset Catalogs
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Catalogus Professorum Lipsiensis
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ChEMBL RDF 0.38-0.35 s 0.44-0.49 s
ChEMBL-RDF (@ Uppsala University)
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Chemical Entities of Biological Interest (ChEBI)
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CiteSeer (Research Index) (RKBExplorer)
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Climb Dataincubator
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Community R&D Information Service (CORDIS) (RKBExplorer)
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Community Research and Development Information Service (CORDIS)
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Comprehensive Knowledge Archive Network
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Copac: union catalogue of major University, Specialist, and National Libraries in the UK and Ireland
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Courts thesaurus
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Crystal Eye: Aggregated Crystallographic Data
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CulturaLinkedData 10,000 0.1-0.08 s 0.32-0.32 s
DBLP Bibliography Database in RDF (FU Berlin)
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DBLP Computer Science Bibliography (RKBExplorer)
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DBLP in RDF (L3S)
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DBTune.org Jamendo RDF Server 0.07-0.08 s 0.27-0.31 s
DBTune.org John Peel sessions RDF server 0.08-0.08 s 0.36-0.37 s
DBTune.org Magnatune RDF server 0.09-0.09 s 0.28-0.89 s
DBTune.org Musicbrainz D2R Server 0.08-0.1 s 0.39-0.42 s
DBTune.org MySpace RDF Service
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DBTune.org/classical 0.36-0.08 s 0.37-0.39 s
DBpedia 10,000 0.33-0.3 s 4.81-0.54 s
DBpedia Commons
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DBpedia Wikidata
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DBpedia in Basque 10,000 0.41-0.4 s 0.87-0.69 s
DBpedia in Dutch
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DBpedia in French 100,000 0.1-0.08 s 0.9-0.9 s
DBpedia in German 10,000 0.04-0.04 s 1.77-1.68 s
DBpedia in Greek 10,000 0.09-0.08 s 0.62-0.59 s
DBpedia in Japanese 10,000 2.5-2.03 s 2.03-2.25 s
DBpedia in Portuguese 100,000 0.47-0.54 s 0.6-0.63 s
DBpedia in Spanish 10,000 0.3-0.31 s 0.93-0.93 s
DBpedia-Live
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DEPLOY (RKBExplorer)
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DURAARK - Linked Building Data
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DailyMed
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Data Incubator: MusicBrainz
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Data.gov
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DataGovIE - Irish Government Data
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http://data.ox.ac.uk/sparql/ (6) 0.3-0.29 s 0.38-0.36 s
Datos.bcn.cl 100,000 0.68-0.52 s 1.79-2.12 s
Deep Blue (RKBExplorer)
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Deutsche Biographie
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Dewey Decimal Classification (DDC)
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DisGeNET 0.65-0.14 s 1.54-1.53 s
Diseasome
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Diverse Italian ReSIST Partner Institutions (RKBExplorer)
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DrugBank
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Dutch Ships and Sailors
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Dutch Ships and Sailors 0.19-0.21 s 0.34-0.39 s
ECCO-TCP Eighteenth Century Texts Linked Data
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ECLAP
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http://cr.eionet.europa.eu/sparql (3) 3-6.3 s
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ELTE Digital Institutional Repository (EDIT) 0.33-0.07 s 5.71-0.83 s
ERA - Australian Research Council publication ratings (RKBExplorer)
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EU Agencies and decentralized bodies (Agencies)
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EU Parliament Media Library
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EU Who Is Who
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EU: fintrans.publicdata.eu
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EUMIDA as Linked Data
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EUR-Lex as Linked Data
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EURAXESS - Researchers in Motion
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EUROVOC in SKOS
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Edinburgh University Theatre Company Productions
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Educational programs - SISVU
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Ege University Linked Open Data
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El Viajero's tourism dataset 10,000 0.08-0.08 s 0.32-0.33 s
Energy efficiency assessments and improvements
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English Heritage Places
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http://opendatacommunities.org/sparql (7)
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English Language Books listed in Printed Book Auction Catalogues from 17th Century Holland
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Enipedia - Energy Industry Data
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Environment Agency Bathing Water Quality 0.1-0.09 s 0.21-0.22 s
EuroSentiment
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European Central Bank (ECB) Linked Data
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European Central Bank Statistics (PublicData.eu)
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European Commission Competition data set (FU Berlin)
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European Election Results
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European Employment Services (EURES)
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http://semantic.eea.europa.eu/sparql (2) 0.26-0.24 s
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European Patent Office (EPO)
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European Television Heritage 0.14-0.07 s 0.38-0.16 s
Europeana SPARQL
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Eurostat in RDF (FU Berlin)
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EventMedia 0.08-0.1 s 0.25-0.19 s
Eventseer
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FOODpedia - Linked Data Dataset about Food Products and Ingredients
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FORGE Course information
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Fact Forge
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FarolApp Streetlight Dataset 10,000 0.08-0.08 s 0.7-0.55 s
Fatal Traffic Accidents in greek roads
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Federal Reserve Board (FRB) Linked Data
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Federal Reserve Economic Data RDF
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Flybase
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Flyted
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Food and Agriculture Organization of the United Nations (FAO) Linked Data
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Foodista
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Foodista
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France Telecom Recherche et Développement (RKBExplorer)
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Fundação da Faculdade de Ciencas da Universidade de Lisboa (RKBExplorer)
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GEneral Multilingual Environmental Thesaurus
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Gene Expression Atlas RDF 0.34-0.37 s 0.51-0.51 s
GeoLinkedData 0.08-0.08 s
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http://lsd.taxonconcept.org/sparql (2)
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Geological Survey of Austria (GBA) - Thesaurus 0.01-0.01 s 0.06-0.06 s
Geological Survey of Austria (GBA) - Thesaurus 0.02-0.01 s 0.06-0.07 s
Geological Survey of Austria (GBA) - Thesaurus 0.01-0.01 s 0.07-0.08 s
Geological Survey of Austria (GBA) - Thesaurus 0.33-0.02 s 0.1-0.08 s
German labor law thesaurus
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Germany - Bundesministerium der Finanzen - Budget
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Gipuzkoa Demografia
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Global
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Global Change Information System
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GovAgriBus Denmark
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GovAgriBus Denmark
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http://www.rdfabout.com/sparql (2)
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GovWILD - Government Web Integration for Linked Data
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Greek Wordnet
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HCLS Knowledge Base
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HeBIS - Bibliographic Resources of the Library Union Catalogues of Hessen and parts of the Rhineland Palatinate
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HealthData.gov Platform (HDP) on the Semantic Web
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Hedatuz
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Hellenic Fire Brigade
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Hellenic Police
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http://heritagedata.org/live/sparql (14)
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Hungarian National Library (NSZL) catalog 10,000 0.02-0.02 s 1.91-2.08 s
IATI as Linked Data 0.2-0.27 s 0.19-0.19 s
IBM Research GmbH (RKBExplorer)
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ICANE 0.47-0.46 s 1.07-1.06 s
IEEE Papers (RKBExplorer)
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IEEE VIS Source Data 10,000 0.23-0.23 s 1.14-1.1 s
INERTIA (INERTIA Energy Consumption Example Linked Data)
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INSEMTIVES
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ISIC V4
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http://dati.isprambiente.it/sparql (5)
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ISTAT Immigration (LinkedOpenData.it)
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Identifiers.org
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Imagesnippets Image Descriptions 1.11-1.28 s 0.95-1.11 s
Influence Tracker Dataset
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Instance Hub (all)
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Institut Eurécom (RKBExplorer)
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Integrated Human Geography Service for LOD by National Geographic Information Institute, Korea
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International Monetary Fund (IMF) Linked Data
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Isidore 0.21-0.21 s 4.8-4.81 s
Italian Museums
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Italian public schools (LinkedOpenData.it)
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J-GLOBAL knowledge
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JITA Classification System of Library and Information Science
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John Goodwin's Family Tree
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Kallikratis municipalities
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Kidney and Urinary Pathway Knowledge Base
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Korea Intellectual Propert Office(KIPO)
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Korean Institute of Science Technology and Information (RKBExplorer)
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Korean Traditional Recipes
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LAAS-CNRS (RKBExplorer)
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LATC Linksets
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LDQM - Accessibility of DBpedia resources 10,000 0.09-0.08 s 3.09-3.08 s
LIBRIS
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LODAC BDLS
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http://lod.my-eventos.com/en/services/sparql/ (2)
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LODStats
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LODUM
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Learning Analytics and Knowledge (LAK) Dataset
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Leipzig Corpora Collection (LCC)
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Leslie Sikos, Ph.D. Semantic Web Researcher
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Lichfield District Council - Spending
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LinkLion - A Link Repository for the Web of Data
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Linked Clean Energy Data (reegle.info)
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Linked Crowdsourced Data
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Linked Data Service der Universitätsbibliothek Mannheim
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Linked Education Cloud
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Linked Logainm 10,000 0.09-0.09 s 0.14-0.17 s
Linked Movie DataBase
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Linked Open Aalto Data Service
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Linked Open Camera (LinkedOpenData.it)
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http://linkedopencommerce.com/sparql (2)
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Linked Open Data of Ecology
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Linked Open Senate (linkedopendata.it)
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Linked Open Vocabularies (LOV)
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Linked Sensor Data (Kno.e.sis)
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Linked Structured Product Labels 10,000 0.96-0.65 s 0.79-0.79 s
Linked TCGA
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Linked User Feedback
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LinkedCT
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http://linkeddata.finki.ukim.mk/sparql (2) 0.47-0.07 s 1.42-1.04 s
LinkedGeoData 50,000 0.08-0.07 s 0.08-0.06 s
LinkedLCCN
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LinkedSpending: OpenSpending becomes Linked Open Data
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LinkedStats
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LinkedUp Catalogue of Educational Datasets
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Linking Italian University Statistics Project
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Lista de Encabezamientos de Materia as Linked Open Data 30,000 0.08-0.08 s 0.29-0.24 s
Lotico 0.1-0.1 s 0.13-0.13 s
http://mlode.nlp2rdf.org/sparql (5)
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MONDIS 0.04-0.03 s 3.86-3.96 s
MORElab 10,000 0.12-0.1 s 0.46-0.44 s
http://geografia.ideca.gov.co/fuseki/dataset.html?tab=query&ds=/inf (2)
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Mass Observation Archive catalogue
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Mathematics Subject Classification
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MediCare
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MetaLex Document Server
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Metoffice Weather Forecasts
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Moseley Folk Festival Data
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Muninn World War I 0.23-0.21 s 0.41-0.37 s
MusicNet Codex
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My Family Lineage
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N-Lex as Linked Data
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http://purl.org/weso/sparql (9)
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NASA Space Flight & Astronaut data in RDF
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NERC Vocabulary Server 2.0 0.19-0.16 s 0.55-0.42 s
NTNU special collections
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National Diet Library of Japan subject headings
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National Digital Data Archive of Hungary (partial) 500 0.13-0.13 s 0.08-0.09 s
National Science Foundation (RKBExplorer)
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Nature Publishing Group - ALL
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Neurocommons text mining pilot
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Nobel Prizes
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Norsk inndeling av vitenskapsdisipliner
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Norwegian geo-divisions
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Noticias Universia
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OSM Semantic Network
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OUNL DSpace in RDF
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http://data.oceandrilling.org/sparql (6)
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OntoBeef Domain
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Ontotext
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Open Archive Initiative Harvest over OAI-PMH (RKBExplorer)
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Open Courseware Consortium metadata in RDF
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Open Data @ Tor Vergata
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Open Data Thesaurus 0.02-0.02 s 0.03-0.04 s
Open Data from the Italian National Research Council
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Open Data of Ecuador
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Open Discovery Space (ODS)
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Open Library data mirror in the Talis Platform
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OpenEI - Open Energy Info 10,000 1.49-1.29 s 1.44-1.31 s
OpenLink Software LOD Cache 100,000 0.33-0.3 s 1.43-0.49 s
OpenMobileNetwork
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OpenTox
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OpenUpLabs COINS
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OpenUpLabs DCLG
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OpenUpLabs Education
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OpenUpLabs Geographic
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OpenUpLabs Legislation
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OpenUpLabs Transport
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Openflights Routes
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Ordnance Survey (RKBExplorer)
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Ordnance Survey Linked Data
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Organic Edunet Linked Open Data
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Organic Edunet Linked Open Data
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Organisation for Economic Co-operation and Development (OECD) Linked Data
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Orthology and Diseases Information - OGO
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OxPoints (University of Oxford) 0.38-0.23 s 0.29-0.28 s
PROD - JISC Project Directory in RDF
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Pali English Lexicon
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PanLex
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Phonetics Information Base and Lexicon (PHOIBLE)
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Pokedex data in RDF
n/a
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Postal codes Italy (LinkedOpenData.it)
n/a
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PreLex
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PreMOn (Predicate Model for Ontologies) 0.05-0.05 s 0.57-0.46 s
Prelinger Archives
n/a
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Procomún SPARQL
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ProductDB
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Project Gutenberg in RDF (FU Berlin)
n/a
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Public Library of Veroia
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Public Record Office Victoria Semantic Wiki
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Public Spending in Greece
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http://linked.opendata.cz/sparql (63) 0.44-0.08 s 7.97-9.5 s
RDFLicense
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RISKS Digest (RKBExplorer)
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RUIAN - registry of land identification, addresses and properties of the Czech Republic 0.07-0.06 s 18.52-18.49 s
Raphael Research Resource
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ReSIST MSc in Resilient Computing Curriculum (RKBExplorer)
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ReSIST Project Wiki (RKBExplorer)
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ReSIST Resilience Mechanisms (RKBExplorer.com)
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Reactome RDF 0.35-0.32 s 0.56-0.51 s
Rechtspraak.nl
n/a
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Renewable Energy Generators
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http://lod.xdams.org/sparql (2) 10,000 0.04-0.15 s 1.62-1.46 s
Research Assessment Exercise 2001 (RKBExplorer)
n/a
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Resilient Computing Courseware (RKBExplorer)
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Revyu.com - Review Anything
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Rijksmuseum Collection Data
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Rijksmuseum Collection Data 0.05-0.05 s 0.13-0.15 s
Russian Universities Specialities
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RxNorm
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Rådata nå!
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http://data.rism.info/sparql (2)
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SADI Semantic Web Services framework registry
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http://demo.spraakdata.gu.se/ltlod/test/ (4)
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SIDER: Side Effect Resource
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SPARQL Endpoint Status
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STITCH: Chemical-Protein Interactions
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n/a
STW Thesaurus for Economics 0.09-0.09 s 0.17-0.18 s
Sanskrit English Lexicon
n/a
n/a
Santillana Guide Dataset
n/a
n/a
Schemapedia: RDF schema compendium
n/a
n/a
School of Electronics and Computer Science, University of Southampton
n/a
n/a
School of Electronics and Computer Science, University of Southampton (RKBExplorer)
n/a
n/a
Scottish Mountaineering Council Journals Issues 1-36
n/a
n/a
Semantic CrunchBase
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n/a
Semantic Profiling Network
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n/a
Semantic Universe Data
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Semantic Web Dog Food Corpus
n/a
n/a
Sensores de IntelliDomo
n/a
n/a
Serendipity 10,000 0.48-0.52 s 4.56-4.59 s
Slidewiki (RDF/SPARQL)
n/a
n/a
SmartLink: Linked Services Non-Functional Properties
n/a
n/a
Social Networks and Archival Context Fall 2011
n/a
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Social Networks and Archival Context Fall 2011
n/a
n/a
Social Semantic Web Thesaurus 0.02-0.02 s 0.46-0.46 s
Source Code Ecosystem Linked Data
n/a
n/a
Spanish Linguistic Datasets 0.08-0.08 s 2.18-2.19 s
Standard Eurobarometer
n/a
n/a
Statistics on Fatal Traffic Accidents in greek roads
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n/a
Street level crime reports for England and Wales
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Sudoc bibliographic data
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SymbolicData
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TCGA Roadmap
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TCMGeneDIT Dataset
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n/a
TED Talks
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n/a
TERENCE Reading Comprehension Dataset
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TIP
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Taiwan geographic names
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Technische Universität Darmstadt (RKBExplorer)
n/a
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Telegraphis Linked Data
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Terminesp Linked Data 12,500 0.13-0.2 s 2.33-2.31 s
Tesauro materias BUPM
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Teseo
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n/a
Test Site, LOD Lab 317 10,000 0.72-0.58 s 3.1-3.19 s
Tetherless World Constellation
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http://linkeddata.ge.imati.cnr.it:8890/sparql (2) 10,000 0.07-0.07 s 2.1-2.14 s
The CIARD RING
n/a
n/a
The Cancer Genome Atlas
n/a
n/a
The Drug Interaction Knowledge Base
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The Eurostat Linked Data
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http://vocab.getty.edu/sparql (2) 0.44-0.53 s 0.89-0.76 s
The London Gazette - Gazettes Data
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The View From
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TheSoz Thesaurus for the Social Sciences (GESIS)
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Thesaurus BNCF 0.29-0.28 s 0.44-0.44 s
Thesaurus W for Local Archives
n/a
n/a
Tourpedia 0.58-0.06 s 7.72-10.65 s
Traditional Korean Medicine Ontology
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Traffic Scotland
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http://purl.org/twc/arrayexpress/virtuoso/sparql (2)
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Transparency International Linked Data
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Twarql
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U.S. Securities and Exchange Commission Corporate Ownership RDF Data (rdfabout)
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UK JISC (RKBExplorer)
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UN Hazardous Materials Numbers
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UN/LOCODE (RKBExplorer)
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UNESCO Institute for Statistics (UIS) Linked Data
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UNESCO Thesaurus 12,500 0.81-0.73 s 1.02-0.81 s
UNESCO Thesaurus
n/a
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UNISTAT-KIS 2011/2012 in RDF (Key Information Set - UK Universities)
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UNISTAT-KIS in RDF (Key Information Set - UK Universities)
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UNODC - Statistics on criminal justice
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URIBurner 0.1-0.21 s 21.51-21.03 s
US Political Violence
n/a
n/a
USAGE review corpus
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n/a
Uberblic.org
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http://sparql.uniprot.org (8) 0.58-0.24 s
n/a
Universidad Técnica Particular de Loja - Linked Open Data
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Universitat Pompeu Fabra - linked data
n/a
n/a
University of Bristol
n/a
n/a
University of Huddersfield -- Circulation and Recommendation Data
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University of Newcastle upon Tyne (RKBExplorer)
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Università degli studi di Roma "La Sapienza" (RKBExplorer)
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Università di Pisa (RKBExplorer)
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Universität Ulm (RKBExplorer)
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Université Paul Sabatier - Toulouse 3 (RKB Explorer)
n/a
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Verrijkt Koninkrijk 0.19-0.19 s 0.31-0.35 s
VidOnt
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Vytautas Magnus University, Kaunas (RKBExplorer)
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Web NDL Authorities - National Diet Library of Japan
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Web Science Conference (RKBExplorer)
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WikiPathways
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Wings workflow provenance dataset
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WordNet (RKBExplorer)
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World Bank Linked Data
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World Factbook (FU Berlin)
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n/a
World War 1 as Linked Open Data 0.13-0.09 s 0.19-0.12 s
Yahoo Geoplanet RDF
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Yale Senselab
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Yovisto - academic video search
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Zhishi.me
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aksw.org Research Group dataset
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aliada-scanbit-net
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business.data.gov.uk
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cablegate
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crm
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crowdsourcing-fb
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data-hnm-hu
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data-szepmuveszeti-hu
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data.open.ac.uk, Linked Data from the Open University 0.09-0.09 s 0.23-0.22 s
http://sparql.data.southampton.ac.uk/ (2) 12,500 0.28-0.27 s 0.86-0.75 s
datos-artium-org
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datos.bne.es
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dbnary 10,000 0.07-0.08 s 1.81-1.84 s
demografiaataun 0.41-0.36 s 0.4-0.37 s
digitaleconomy
n/a
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dotAC (RKBExplorer)
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n/a
ePrints Harvest (RKBExplorer)
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ePrints3 Institutional Archive Collection (RKBExplorer)
n/a
n/a
eagle-i 0.55-0.26 s 1.33-1.21 s
eagle-i @ Clark Atlanta University 0.27-0.27 s 1.62-1.42 s
eagle-i @ Dartmouth College
n/a
n/a
eagle-i @ Florida Agricultural and Mechanical University 0.29-0.27 s 1.5-1.52 s
eagle-i @ Harvard University 0.86-0.83 s 1.68-1.69 s
eagle-i @ Howard University 0.27-0.29 s 1.63-1.59 s
eagle-i @ Hunter College 0.27-0.27 s 1.58-1.57 s
eagle-i @ Jackson State University 0.26-0.36 s 1.13-1.28 s
eagle-i @ Meharry Medical College 0.27-0.28 s 1.48-1.44 s
eagle-i @ Montana State University 0.55-0.27 s 1.37-1.32 s
eagle-i @ Morehouse School of Medicine 0.26-0.27 s 1.35-1.42 s
eagle-i @ Oregon Health and Science University 0.27-0.27 s 1.29-1.24 s
eagle-i @ Ponce School of Medicine 0.72-0.26 s 2-1.92 s
eagle-i @ Texas Southern University 0.27-0.28 s 1.92-1.92 s
eagle-i @ The City College of New York 0.26-0.26 s 1.49-1.6 s
eagle-i @ Tuskegee University 2.38-6.92 s 2.04-2.03 s
eagle-i @ Universidad Central del Caribe 0.27-0.27 s 1.44-1.4 s
eagle-i @ University of Alaska Fairbanks 0.27-0.31 s 1.48-1.4 s
eagle-i @ University of Hawai'i at Mānoa 0.3-0.27 s 1.91-1.92 s
eagle-i @ University of Texas at El Paso 0.45-0.29 s 2.01-2.03 s
eagle-i @ University of Texas at San Antonio 0.55-0.27 s 1.42-1.41 s
eagle-i @ Vanderbilt University
n/a
n/a
eagle-i @ Xavier University of Louisiana 0.29-0.44 s 2.25-2.13 s
eagle-i@ University of Puerto Rico - Medical Sciences Campus 0.28-0.29 s 1.33-1.21 s
education.data.gov.uk
n/a
n/a
enaktingpsi
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environment.data.gov.uk
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epsrc
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n/a
flyatlas
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n/a
fun
n/a
n/a
gdlc
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iServe: Linked Services Registry
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n/a
ichoose
n/a
n/a
intervalue
n/a
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linkedarc.net archaeological datasets
n/a
n/a
http://lobid.org/sparql/ (2)
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lofd
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mEducator: Linked Educational Resources
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myExperiment
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nomisma
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notube
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patents.data.gov.uk
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provenanceweb
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reference.data.gov.uk
n/a
n/a
research.data.gov.uk
n/a
n/a
rkb-explorer-foreign
n/a
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roni
n/a
n/a
scholarlydata 12,500 0.89-0.69 s 2.56-3.92 s
semantic-web-journal
n/a
n/a
statistics.data.gov.uk
n/a
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transport.data.gov.uk
n/a
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twc-opendap
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vulnerapedia
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webconf
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wiktionary.dbpedia.org
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xLiD-Lexica
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xxxxx
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