The Sequoia 2000 Electronic Repository

This paper summarize

The Sequoia 2000 Electronic Repository

A major e#ort in the Sequoia 2000 project was to build a very large database of Earth Science information. However, without the means to e#ciently and e#ectively locate required information and to browse its contents, this vast database would rapidly become unmanagable and eventually unusable. The "Electronic Repository" project of Sequoia 2000 was intended to address these problems by the development of indexing and retrieval software incorporated into the POSTGRES database management system. This article will describe the elements of the Electronic Repository project for Sequoia 2000, including the design of probabilistic indexing and retrieval for text documents in POSTGRES, and the development of algorithms for automatic geo-referencing of text documents and segmentation of full texts into topically coherent segments for improved retrieval. Graphical interfaces to support these retrieval features will also be described. 1 Introduction Global change researchers, studying..