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Managing Gigabytes 2nd Edition
In this fully updated second edition of the highly acclaimed Managing Gigabytes, authors Witten, Moffat, and Bell continue to provide unparalleled coverage of state-of-the-art techniques for compressing and indexing data. Whatever your field, if you work with large quantities of information, this book is essential reading--an authoritative theoretical
resource and a practical guide to meeting the toughest storage and access challenges. It covers the latest developments in compression and indexing and their application on the Web and in digital libraries. It also details dozens of powerful techniques supported by mg, the authors' own system for compressing, storing, and retrieving text, images, and textual images. mg's source code is freely available on the Web.
* Up-to-date coverage of new text compression algorithms such as block sorting, approximate arithmetic coding, and fat Huffman coding
* New sections on content-based index compression and distributed querying, with 2 new data structures for fast indexing
* New coverage of image coding, including descriptions of de facto standards in use on the Web (GIF and PNG), information on CALIC, the new proposed JPEG Lossless standard, and JBIG2
* New information on the Internet and WWW, digital libraries, web search engines, and agent-based retrieval
* Accompanied by a public domain system called MG which is a fully worked-out operational example of the advanced techniques developed and explained in the book
* New appendix on an existing digital library system that uses the MG software
FEATURES:
* Up-to-date coverage of new text compression algorithms such as block sorting, approximate arithmetic coding, and fat Huffman coding
* New sections on content-based index compression and distributed querying, with 2 new data structures for fast indexing
* New coverage of image coding, including descriptions of de facto standards in use on the Web (GIF and PNG), information on CALIC, the new proposed JPEG Lossless standard, and JBIG2
* New information on the Internet and WWW, digital libraries, web search engines, and agent-based retrieval
* Accompanied by a public domain system called MG which is a fully worked-out operational example of the advanced techniques developed and explained in the book
* New appendix on an existing digital library system that uses the MG software
CONTENTS:
PREFACE
1. OVERVIEW
1.1 Document databases
1.2 Compression
1.3 Indexes
1.4 Document images
1.5 The MG system
1.6 Further reading
2. TEXT COMPRESSION
2.1 Models
2.2 Adaptive models
2.3 Huffman Coding
2.4 Arithmetic coding
2.5 Symbolwise models
2.6 Dictionary models
2.7 Synchronization
2.8 Performance comparisons
2.9 Further reading
3. INDEXING
3.1 Sample document collections
3.2 Inverted file indexing
3.3 Inverted file compression
3.4 Performance of index compression methods
3.5 Signature files and bitmaps
3.6 Comparison of indexing methods
3.7 Case folding, stemming, and stop words
3.8 Further reading
4. QUERYING
4.1 Accessing the lexicon
4.2 Partially specified query terms
4.3 Boolean query processing
4.4 Ranking and information retrieval
4.5 Evaluating retrieval effectiveness
4.6 Implementation of the cosine measure
4.7 Interactive retrieval
4.8 Distributed retrieval
4.9 Further reading
5. INDEX CONSTRUCTION
5.1 Memory - based inversion
5.2 Sort - based inversion
5.3 Exploiting index compression
5.4 Compressed in - memory inversion
5.5 Comparison of inversion methods
5.6 Constructing signature files and bitmaps
5.7 Dynamic collections
5.8 Further reading
6. IMAGE COMPRESSION
6.1 Types of image
6.2 The CCITT fax standard for bilevel images
6.3 Context - based compression of bi-level images
6.4 JBIG: A standard for bilevel images
6.5 Lossless compression of continuous - tone images
6.6 JPEG: A standard for continuous - tone images
6.7 Progressive transmission of images
6.8 Summary of image compression techniques
6.9 Further reading
7. TEXTUAL IMAGES
7.1 The idea of textual image compression
7.2 Lossy and lossless compression
7.3 Extracting marks
7.4 Template matching
7.5 From marks to symbols
7.6 Coding the components of a textual image
7.7 Performance: lossy and lossless modes
7.8 System considerations
7.9 JBIG2: A standard for textual image compression
7.10 Further reading
8. MIXED TEXT AND IMAGES
8.1 Orientation
8.2 Segmentation
8.3 Classification
8.4 Further reading
9. IMPLEMENTATION
9.1 Text compression
9.2 Text compression performance
9.3 Images and textual images
9.4 Index construction
9.5 Index compression
9.6 Query processing
9.7 Further reading
10. THE INFORMATION EXPLOSION
10.1 Two millennia of information
10.2 The Internet: a global information resource
10.3 The paper problem
10.4 Coping with the information explosion
10.5 Digital libraries
10.6 Managing gigabytes better
10.7 Small is beautiful
10.8 Personal information support for life
10.9 Further reading
A. GUIDE TO THE MG SYSTEM
A.1 Installing the MG system
A.2 A sample storage and retrieval session
A.3 Database creation collection
A.5 Nontextual files
A.6 Image compression programs
B. GUIDE TO THE NZDL
B.1 What's in the NZDL?
B.2 How the NZDL works
B.3 Implications
B.4 Further reading
REFERENCES
INDEX
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