AFLAB
1
full-auto
Yes
none
CLAIM
DOC,DOCNO,TITLE,ABST,SPEC,CLAIM
NTCIR-6 sample topics
word
part-of-speech tagging
inverted file
word
OKAPI BM25
TF.IDF
none
AFLAB
2
full-auto
No
none
CLAIM
DOC,DOCNO,TITLE,ABST,SPEC,CLAIM,CITATION
NTCIR-6 sample topics
word
part-of-speech tagging
inverted file
word
OKAPI BM25
TF.IDF
none
AFLAB
3
full-auto
No
none
CLAIM
DOC,DOCNO,TITLE,ABST,SPEC,CLAIM,CITATION
NTCIR-6 sample topics
word
part-of-speech tagging
inverted file
word
OKAPI BM25
TF.IDF
none
JSPAT
1
full-auto
Yes
EN
CLAIM
DOC,DOCNO,TITLE,ABST,SPEC,CLAIM
none
word
morphological analysis
inverted file
word
vector space model
TF.IDF and log TF
none
JSPAT
2
full-auto
Yes
EN
CLAIM
DOC,DOCNO,TITLE,ABST,SPEC,CLAIM
none
word
morphological analysis
inverted file
word
vector space model
TF.IDF and log TF
none
JSPAT
3
full-auto
No
EN
CLAIM,APP-DATE
DOC,DOCNO,TITLE,ABST,SPEC,CLAIM
none
word
morphological analysis
inverted file
word
vector space model
TF.IDF and log TF
none
JSPAT
4
full-auto
No
EN
CLAIM,APP-DATE
DOC,DOCNO,TITLE,ABST,SPEC,CLAIM
none
word
morphological analysis
inverted file
word
vector space model
TF.IDF and log TF
none
KLE
1
full-auto
EN
CLAIM
TITLE, ABST, SPEC, CLAIM
Sample topics for parameter optimization
word
as-is, Porter stemming
Inverted file
word
Language Model
Term Frequency, Document Length, Collection Frequency, Collection Length
none
NTNU
1
full-auto
Yes
EN
INVENTOR, TITLE, ABST, CLAIM, some use SPEC
INVENTOR, TITLE, ABST, CLAIM
none
1-gram, 2-gram indexing, and key-phrase formulation. Thus the index terms include single characters, all 2-word and repeated words/phrases unregistered in the dictionary.
a phrase formulation technique based on repeated sequence extraction to combine unsegmented characters or words into new words or phrases.
inverted file
1-gram, 2-gram indexing, and key-phrase formulation. Thus the index terms include single characters, all 2-word and repeated words/phrases unregistered in the dictionary.
probabilistic model
TF/IDF
pseudo feedback
hcu
1
full-auto
Yes
CLAIM tag
TITLE,ABST,SPEC,CLAIM
NTCIR 6, sample
Word
morphological analysis
GETA
Word
vector space model
SMART
query expansion based on a related term dictionary, which was automatically constructed from a patent database.
hcu
1
full-auto
Yes
CLAIM tag
TITLE,ABST,SPEC,CLAIM
NTCIR 6, sample
Word
morphological analysis
GETA
Word
vector space model
SMART
query expansion based on a related term dictionary, which was automatically constructed from a patent database.