عنوان

Latent semantic mapping :

(Number (ISBN

159829105X

(Number (ISBN

1598294032

(Number (ISBN

9781598291056

(Number (ISBN

9781598294033

Erroneous ISBN

1598291041

Erroneous ISBN

9781598291049

Number

b800931

Title Proper

Latent semantic mapping :

General Material Designation

[Book]

Other Title Information

principles & applications /

First Statement of Responsibility

Jerome R. Bellegarda.

Edition Statement

1st ed.

Place of Publication, Distribution, etc.

[San Rafael, Calif.] :

Name of Publisher, Distributor, etc.

Morgan & Claypool Publishers,

Date of Publication, Distribution, etc.

©2007.

Specific Material Designation and Extent of Item

1 online resource (x, 101 pages)

Series Title

Synthesis lectures on speech and audio processing ;

Volume Designation

#3

Text of Note

Title from PDF title page (viewed Sept. 13, 2007).

Text of Note

Includes bibliographical references (pages 89-100).

Text of Note

Principles -- Introduction -- Motivation -- From LSA to LSM -- Organization -- Latent semantic mapping -- Co-occurrence matrix -- Vector representation -- Interpretation -- LSM feature space -- Closeness measures -- LSM framework extension -- Salient characteristics -- Computational effort -- Off-line cost -- Online cost -- Possible shortcuts -- Probabilistic extensions -- Dual probability model -- Probabilistic latent semantic analysis -- Inherent limitations -- Applications -- Junk e-mail filtering -- Conventional approaches -- LSM-based filtering -- Performance -- Semantic classification -- Underlying issues -- Semantic inference -- Caveats -- Language modeling -- N-gram limitations -- MultiSpan language modeling -- Smoothing -- Pronunciation modeling -- Grapheme-to-phoneme conversion -- Pronunciation by latent analogy -- Speaker verification -- The task -- LSM-based speaker verification -- TTS unit selection -- Concatenative synthesis -- LSM-based unit selection -- LSM-based boundary training -- Perspectives -- Discussion -- Inherent tradeoffs -- General applicability -- Conclusion -- Summary -- Perspectives.

0

Text of Note

Latent semantic mapping (LSM) is a generalization of latent semantic analysis (LSA), a paradigm originally developed to capture hidden word patterns in a text document corpus. In information retrieval, LSA enables retrieval on the basis of conceptual content, instead of merely matching words between queries and documents. It operates under the assumption that there is some latent semantic structure in the data, which is partially obscured by the randomness of word choice with respect to retrieval. Algebraic and/or statistical techniques are brought to bear to estimate this structure and get rid of the obscuring "noise." This results in a parsimonious continuous parameter description of words and documents, which then replaces the original parameterization in indexing and retrieval. This approach exhibits three main characteristics: 1) discrete entities (words and documents) are mapped onto a continuous vector space; 2) this mapping is determined by global correlation patterns; and 3) dimensionality reduction is an integral part of the process. Such fairly generic properties are advantageous in a variety of different contexts, which motivates a broader interpretation of the underlying paradigm. The outcome (LSM) is a data-driven framework for modeling meaningful global relationships implicit in large volumes of (not necessarily textual) data. This monograph gives a general overview of the framework, and underscores the multifaceted benefits it can bring to a number of problems in natural language understanding and spoken language processing. It concludes with a discussion of the inherent tradeoffs associated with the approach, and some perspectives on its general applicability to data-driven information extraction.

International Standard Book Number

9781598291049

Automatic speech recognition.

Computational linguistics.

Latent semantic indexing.

Semantics-- Data processing.

Semantics-- Mathematical models.

Automatic speech recognition.

Computational linguistics.

LANGUAGE ARTS & DISCIPLINES-- Linguistics-- Psycholinguistics.

Latent semantic indexing.

Semantics-- Data processing.

Semantics-- Mathematical models.

LAN-- 009040

Number

Edition

Class number

Book number

Bellegarda, Jerome Rene,1961-

Date of Transaction

20201207131737.0

Cataloguing Rules (Descriptive Conventions))

pn

Electronic name

[Book]

Y