Selecting the Most Highly Correlated Pairs within a Large Vocabulary (2009)
Occurence patterns of words in documents can be expressed as binary vectors. When two vectors are similar, the two words corresponding to the vectors may have some implicit relationship with each...
Web link analysis has been proven to provide significant enhancement to the precision of web search in practice. The PageRank algorithm, used in the Google Search Engine, plays an important role in...
Query Expansion with the Minimum Relevance Judgments (2008)
Masayuki Okabe, Kyoji Umemura, Seiji Yamada
Abstract. Query expansion techniques generally select new query terms from a set of top ranked documents. Although a user’s manual judgment of those documents would much help to select good...
Selecting Indexing Strings using Adaptation (2008)
Yoshiyuki Takeda, Kyoji Umemura
It is not easy to tokenize agglutinative languages like Japanese and Chinese into words. Many IR systems start with a dictionarybased morphology program like ChaSen [4]. Unfortunately, dictionaries...
Empirical Term Weighting (2008)
Kyoji Umemura, Yoshiyuki Takeda, Michiko Tanaka, Lin Feng, Eiko Yamamoto
Our system used an empirical method for estimating term weights directly from relevance judgements, avoiding various standard but potentially troublesome assumptions. It is common to assume, for...
Very Low-Dimensional Latent Semantic Indexing for Local Query Regions (2008)
In this paper, we focus on performing LSI on very low SVD dimensions. The results show that there is a nearly linear surface in the local query region. Using low-dimensional LSI on local query region...
A floating-point-number-oriented LISP has been developed. Though it performs type checking on every numeric operation, it runs as fast as Fortran for simple differential-equation problems. This paper...
Selecting the Most Highly Correlated Pairs within a Large Vocabulary (2007)
Occurence patterns of words in documents can be expressed as binary vectors. When two vectors are similar, the two words corresponding to the vectors may have some implicit relationship with each...
Query expansion with the minimum user feedback by transductive learning (2005)
Masayuki Okabe, Kyoji Umemura, Seiji Yamada
Query expansion techniques generally select new query terms from a set of top ranked documents. Although a user’s manual judgment of those documents would much help to select good expansion terms,...
Dynamic Programming Matching for Large Scale Information Retrieval (2003)
Eiko Yamamoto, Masahiro Kishida, Yoshinori Takenami, Yoshiyuki Takeda, Kyoji Umemura
Though dynamic programming matching can carry out approximate string matching when there may be deletions or insertions in a document, its effectiveness and efficiency are usually too poor to use it...
E.: Determining indexing strings with statistical analysis (2003)
Yoshiyuki Takeda, Kyoji Umemura, Eiko Yamamoto
Deciding indexing string is important for Information Retrieval. Ideally, the strings should be the words that represent the documents or query. Although each single word may be the first candidate...
Empirical term weighting and expansion frequency (2000)
We propose an empirical method for estimating term weights directly from relevance judgements, avoiding various standard but potentially troublesome assumptions. It is common to assume, for example,...
Empirical term weighting and expansion frequency (2000)
We propose an empirical method for estimating term weights directly from relevance judgements, avoiding various standard but potentially trouble-some assumptions. It is common to assume, for...
Construction of a Bilingual Dictionary Intermediated by a Third Language (1994)
TANAKA, Kumiko, UMEMURA, Kyoji
When using a third language to construct a bilingual dictionary, it is necessary to discriminate equivalencies from inappropriate words derived as a result of ambiguity in the third language. We...
Construction of a Bilingual Dictionary Intermediated by a Third Language (1994)
When using a third language to construct a bilingual dictionary, it is necessary to discriminate equivalencies from inappropriate words derived as a result of ambiguity in the third language. We...