跳到主要內容

臺灣博碩士論文加值系統

(44.201.97.0) 您好!臺灣時間:2024/04/16 10:24
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

: 
twitterline
研究生:陳威全
研究生(外文):Wei-quan Chen
論文名稱:克羅孚子空間法應用於不同的詞文件矩陣
論文名稱(外文):Krylov Subspace Method for different Term-Document Matrices
指導教授:賴玉玲賴玉玲引用關係
學位類別:碩士
校院名稱:國立中正大學
系所名稱:應用數學研究所
學門:數學及統計學門
學類:數學學類
論文種類:學術論文
論文出版年:2006
畢業學年度:95
語文別:英文
論文頁數:25
中文關鍵詞:克羅孚子空間詞文件陳威全
外文關鍵詞:Krylov Subspace MethodWei-quan Chen
相關次數:
  • 被引用被引用:0
  • 點閱點閱:159
  • 評分評分:
  • 下載下載:7
  • 收藏至我的研究室書目清單書目收藏:0
An information retrieval system is to search documents
in a large database for those which are relevant to a user query.
A well-known method called Krylov subspace method is one of
subspace methods for IR. It applies the Golub-Kahan
bidiagonalization algorithm to a term-document matrix, starting
from the query vector. Here we will study the famous and powerful
method. And term weighting is common for improving the accuracy of
an IR system. After introducing several term weighting schemes, we
test two noted databases, Medline and Cranfield, for different
term weighting schemes. By transforming term-document matrices, we
try to realize the effect of term weighting for Krylov subspace
method.
1 Introduction

2 Background
2.1 Information retrieval
2.2 Definition and notation

3 Krylov subspace and Term weighting
3.1 Interpretation of krylov sequences
3.2 Krylov subspace method
3.3 Measuring progress
3.4 Term weighting .

4 Numerical experiments
1. M. W. Berry, S. T. Dumais, and G. W. O'Brien,
{Using linear algebra for intelligent information retrieval}, SIAM
Review, 37(1995), pp. 573-595.
2. S. T. Dumais, G. W. Furnas, T. K. Landauer, S.
Deerwester, and R. Harshman, {Indexing by latent semantic
analysis}, J. Amer. Soc. Inform. Sci., 41 (1990), pp. 391-407
3. G. H. Golub and C. F. Van Loan, {Matrix Computations},
Johns Hopkins University Press, Baltimore, Maryland, 3 ed., 1996.
4. K. Blom, {Information Retrieval using the Singular
Value Decomposition and Krylov Subspaces}, Technical report
1999-5, Department of Mathematics, Chalmers University of Technology, Sweden,1999.
5. K. Blom and A. Rune, {Information Retrieval using very short Krylov Sequences}, in Computational Information Retrieval,
M. W. Berry, Proc. Appl. Math. 106, SIAM, Philadelphia, 2001, pp.39-52.
6. K. Blom and A. Rune, {A Krylov Subspace Method for Information Retrieval}, SIAM J. MATRIX ANAL. APPL. Vol. 26,No. 2, pp. 566-582.
7. S. T. Dumais, {Enhancing Performance in Latent Semantic Indexing(LSI) Retrieval}, Bellcore, 21236, 1992.
8. Cranfield and Medline collections. (Available at URL:ftp://ftp.cs.cornell.edu/pub/smart).
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top