Amit Singhal

Department of Computer Science, Cornell University

singhal@cs.cornell.edu

Phone: 607/255-9211, Fax: 607/255-4428

My research interests are in the area of information retrieval and text processing. My thesis advisor was (late) Prof. Gerard Salton. My current thesis supervisors are Dr. Chris Buckley and Prof. Claire Cardie

Here is a postscript copy of my resume.

The Smart group at Cornell CS department has been one of the foremost research groups in the field of information retrieval for last thirty years. Our current research involves:

• Document Length Normalization in Information Retrieval

  To fairly retrieve texts of varying sizes, document length normalization is commonly used in term weighting. We show that effective systems should retrieve documents of all sizes with chances similar to their likelihood of relevance. We propose pivoting, a new technique that can be used to modify existing normalization functions to yield substantial improvements in retrieval effectiveness. We also propose a new and effective normalization technique.

  Some papers ...

• Our TREC Participation

  Text REtrieval Conference (TREC) is a NIST and ARPA co-sponsored effort to objectively evaluate various information retrieval techniques on an independent testbed. The Smart system has consistently been one of the best systems at TREC.

  Some papers ...

• Automatic Text Structuring and Summarization

  Non expository texts are not usually read from cover to cover. Readers are helped in such circumstances by providing selective access to text excerpts as needed. We have developed techniques to analyze the structure of a text and provide tools for selective text traversal.

  Some papers ...

Papers

Normalization papers:

• Pivoted Document Length Normalization. Amit Singhal, Chris Buckley, Mandar Mitra, (Gerard Salton). (TR95-1560)
• Document Length Normalization. Amit Singhal, Gerard Salton, Mandar Mitra and Chris Buckley. (TR95-1529)
• Length Normalization in Degraded Text Collections. Amit Singhal, Gerard Salton and Chris Buckley. (TR95-1507)

TREC papers:

• Coming soon: New Retrieval Approaches Using SMART: TREC 4. Chris Buckley, Amit Singhal, Mandar Mitra, (Gerard Salton).
• Automatic Query Expansion Using SMART: TREC 3. Chris Buckley, Gerard Salton, James Allan, and Amit Singhal. In Proceedings of the Third Text Retrieval Conference, NIST Special Publication 500-225, 69-80.

Text structuring papers:

• Automatic Text Decomposition Using Text Segments and Text Themes. Gerard Salton, Amit Singhal, Chris Buckley, and Mandar Mitra, Hypertext '96 (to appear). (TR95-1555)
• Automatic Text Decomposition and Structuring. Gerard Salton, James Allan, and Amit Singhal, Information Processing and Management (to appear).
• Automatic Text Browsing Using Vector Space Model. Amit Singhal and Gerard Salton. In Proceedings of the Dual-Use Technologies and Applications Conference, May 1995, 318-324.
• Selective Text Traversal. Gerard Salton and Amit Singhal. (TR95-1549)
• Automatic Text Theme Generation and the Analysis of Text Structure. Gerard Salton and Amit Singhal. (TR94-1438)
• Automatic Analysis, Theme Generation, and Summarization of Machine Readable Texts. Gerard Salton, James Allan, Chris Buckley, and Amit Singhal, Science 264 (3 June, 1994), 1421-1426.

Smart Group

• Chris Buckley, senior research associate;
• Amit Singhal, Ph.D. student;
• Mandar Mitra, Ph.D. student;
• David Fielding, Masters of Engineering student;

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