1
Scott C Deerwester, Susan T Dumais, George W Furnas, Richard A Harshman, Thomas K Landauer, Karen E Lochbaum, Lynn A Streeter: Computer information retrieval using latent semantic structure. Bell Communications Research, James W Falk, John T Peoples, June 13, 1989: US04839853 (413 worldwide citation)

A methodology for retrieving textual data objects is disclosed. The information is treated in the statistical domain by presuming that there is an underlying, latent semantic structure in the usage of words in the data objects. Estimates to this latent structure are utilized to represent and retriev ...


2
Thomas K Landauer, Michael L Littman: Computerized cross-language document retrieval using latent semantic indexing. Bell Communications Research, Leonard Charles Suchyta, Joseph Giordano, April 5, 1994: US05301109 (324 worldwide citation)

A methodology for retrieving textual data objects in a multiplicity of languages is disclosed. The data objects are treated in the statistical domain by presuming that there is an underlying, latent semantic structure in the usage of words in each language under consideration. Estimates to this late ...


3
Douglas A Corey, Thomas K Landauer, Karen E Lochbaum: Searching large collections of text using multiple search engines concurrently. U S West, MediaOne Group, Holme Roberts & Owen, November 16, 1999: US05987446 (280 worldwide citation)

An information retrieval system is disclosed, wherein the system includes a plurality of text search engines based on substantially different computational searching techniques. By activating each search engine with input from a user information request, the output from each of the search engines is ...


4
Peter William Foltz, Thomas K Landauer, Robert Darrell Laham II, Walter Kintsch, Robert Ernest Rehder: Methods for analysis and evaluation of the semantic content of a writing based on vector length. University Technology Corporation, Daniel N Fishman, Lathrop & Gage L C, March 12, 2002: US06356864 (217 worldwide citation)

The present invention is a methodology for analyzing and evaluating a sample text, such as essay(s), or document(s). This methodology compares sample text to a reference essay(s), document(s), or text segment(s) within a reference essay or document. The methodology analyzes the amount of subject-mat ...


5
Douglas Arthur Corey, Thomas K Landauer, Bud C Wonsiewicz: Video programming retrieval using extracted closed caption data which has been partitioned and stored to facilitate a search and retrieval process. U S West Technologies, Sheridan Ross, December 30, 1997: US05703655 (158 worldwide citation)

The present invention is a system and method for retrieving segments of stored video programs using closed caption text data. The closed caption text data is extracted from video programming signals received by the invention. Text records based on the extracted closed caption data are generated. Eac ...