Ian H. Witten – Communications of the ACM

Research and Advances May 1 2001

Greenstone is a comprehensive system for constructing and presenting collections of thousands or millions of documents, including text, images, audio, and video. Greenstone libraries contain many collections, individually organized, though they bear a strong family resemblance. Easily maintained, collections can be augmented and rebuilt automatically. Greenstone constructs full-text indexes from the document text and from […]

Computing Applications

Author Archives

Research and Advances May 1 2001

Niupepa: a Historical Newspaper Collection

Niupepa is a collection of 42 newspaper titles published in New Zealand from 18421933, comprising a total of 21,000 pages in 1,750 issues. This collection forms a unique historical record of the language of the indigenous Mãori people, the evolution of the written form of this language, and of events and developments during the formative […]

Computing Applications

Research and Advances May 1 2001

The Promise of Digital Libraries in Developing Countries

Although knowledge is critical for development, few developing countries are participating in the information revolution. Just as industrialization and globalization have increased the gulf between the haves and have-nots, so information and communications technology is creating a chasm between the knows and know-nots [5]. For dissemination of humanitarian information, traditional publishing and distribution mechanisms have […]

Computing Applications

Research and Advances Apr 1 1998

A public library based on full-text retrieval

Computing Applications

Research and Advances Apr 1 1995

The MG retrieval system: compressing for space and speed

Recent advances in compression and indexing techniques have yielded a qualitative change in the feasibility of large-scale full-text retrieval.

Artificial Intelligence and Machine Learning

Research and Advances Jun 1 1987

Arithmetic coding for data compression

The state of the art in data compression is arithmetic coding, not the better-known Huffman method. Arithmetic coding gives greater compression, is faster for adaptive models, and clearly separates the model from the channel encoding.

Computing Applications

Research and Advances Mar 1 1985

A system for interactive viewing of structured documents

An existing typesetting system is tied by bridging software to an existing page-presentation program to effect both hard (typeset) copy and interactive browsing. The typesetting system formats documents for a variety of output devices, and the “browsing” feature appears to the user as simply another output device that happens to be interactive.

Architecture and Hardware

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