Table 1 Comparison of semantic search engines
From: GoWeb: a semantic search engine for the life science web
ontologies | (1) implicit through RDF, (2) GO, (3) MeSH | ||||||||
|---|---|---|---|---|---|---|---|---|---|
textmining | (4) NLP, (5) label extraction, (6) Ontology terminology, (7) biomedical entities, (8) Wikipedia terminology | ||||||||
type of documents | (9) RDF related, (10) web pages, (11) snippets, (12) abstracts, (13) fulltext | ||||||||
clustering of results | (14) RDF types, (15) extracted categories, (16) textual labels, (17) ontology, (18) answers, (19) query aspects | ||||||||
result type | (20) RDF resource, (21) extracted text, (22) answer, (23) snippet, (24) sentence, (25) fulltext, (26) cluster, (27) induced ontology, (28) abstract | ||||||||
Semantic Search Engines | structured/unstructured | ontologies | textmining | number of documents | type of documents | clustering of results | result type | highlighting | scientifically evaluated |
Swoogle | rdf | 1 | ≫Mio | 9 | 20 | yes | |||
SWSE | rdf | 1 | ≫Mio | 9 | 14 | 20 | yes | ||
Sindice | rdf | 1 | ≫Mio | 9 | 20 | yes | |||
Watson | rdf | 1 | ≫Mio | 9 | 20 | yes | |||
Falcons | rdf | 1 | ≫Mio | 9 | 14 | 20 | yes | yes | |
CORESE | rdf | 1 | ≫Mio | 9 | 20 | yes | |||
WikiDB | rdf | 1 | ≫Mio | 9 | 20 | ||||
Hakia | txt | 4 | ≫Bio | 10 | 15 | 21 | yes | ||
START | txt | 4 | ≫Bio | 10 | 22 | yes | |||
Ask.com | txt | 4 | ≫Bio | 10 | 23 | ||||
BrainBoost | txt | 4 | ≫Bio | 10 | 24 | yes | |||
AnswerBus | txt | 4 | ≫Bio | 10 | 25 | yes | |||
Cuil | txt | 4,8 | ≫Bio | 10 | 15 | 21 | yes | ||
Clusty | txt | 5 | ≫Bio | 10 | 16 | 23,26 | yes | ||
Carrot | txt | 5 | ≫Bio | 11 | 16 | 23,26 | yes | yes | |
PowerSet | wiki | 4,8 | ≫Mio | 10 | 15 | 23,25 | yes | ||
QuAliM | wiki/txt | 4,8 | ≫Mio | 11,10 | 22 | yes | |||
GoWeb | txt | 2,3 | 6,7,8 | ≫Bio | 11 | 17 | 23,27 | yes | yes |
askMedline | xml | 3 | ≫Mio | 12 | 28 | yes | |||
EAGLi | xml | 2 | 4,6 | ≫Mio | 12 | 18 | 22,28 | yes | yes |
GoPubMed | xml | 2,3 | 6,7,8 | ≫Mio | 12 | 17 | 23,27,28 | yes | yes |
ClusterMed | xml | 3 | 5 | ≫Mio | 12 | 16 | 26,28 | yes | yes |
IHop | xml | 3 | 6,7 | ≫Mio | 12 | 19 | 24,28 | yes | yes |
EBIMed | xml | 2,3 | 6,7 | ≫Mio | 12 | 17 | 24,27 | yes | yes |
XplorMed | xml | 3 | 5,6 | ≫Mio | 12 | 17 | 21,28 | yes | yes |
Textpresso | xml | 2 | 6 | ≫Mio | 13 | 17 | 28 | yes | yes |
Chilibot | xml | 7 | ≫Mio | 12 | 24 | yes | yes | ||