1
Thomas Kirk, Alon Yitzchak Levy: User interface for information retrieval system. Lucent Technologies, J M Weinick, June 16, 1998: US05768578 (335 worldwide citation)

An improved information retrieval system user interface for retrieving information from a plurality of sources and for storing information source descriptions in a knowledge base. The user interface includes a hypertext browser and a knowledge base browser/editor. The hypertext browser allows a user ...


2
Alon Yitzchak Levy, Inderpal Singh Mumick: Query optimization by predicate move-around. Lucent Technologies, August 19, 1997: US05659725 (87 worldwide citation)

Query optimization which is done by making a graph of the query and moving predicates around in the graph so that they will be applied early in the optimized query generated from the graph. Predicates are first propagated up from child nodes of the graph to parent nodes and then down into different ...


3
Thomas Kirk, Alon Yitzchak Levy, Divesh Srivastava: Apparatus and methods for retrieving information. Lucent Technologies, Gordon E Nelson, August 5, 1997: US05655116 (66 worldwide citation)

A query translator translates a query between a graphical user interface and a knowledge representation system. The knowledge representation system reformulates the query and generates an access plan to access data requested by the query. The access plan utilizes several different protocols to acces ...


4
Alon Yitzchak Levy, Joann Janet Ordille: Integration of an information server database schema by generating a translation map from exemplary files. AT&T, July 7, 1998: US05778373 (57 worldwide citation)

A method of reducing the burden on database administrators when integrating information from a database system with a computer system over a computer network is disclosed. Rather than requiring the database administrator to express the meaning of database attribute names in a new language, the datab ...


5
Shaul Dar, Hosagrahar Visvesvaraya Jagadish, Alon Yitzchak Levy, Divesh Srivastava: Method and system for using materialized views to evaluate queries involving aggregation. AT&T, April 27, 1999: US05897632 (49 worldwide citation)

The present invention is a method and system for using materialized views to compute answers to SQL queries with grouping and aggregation. A query is evaluated a using a materialized view. The materialized view is semantically analyzed to determine whether the materialized view is usable in evaluati ...


6
Maria F Fernandez, Daniela Dina Florescu, Jaewoo Kang, Alon Yitzchak Levy, Dan Suciu: Method and apparatus for web site management. AT & T, September 21, 1999: US05956720 (45 worldwide citation)

A method and apparatus for managing a web-site. An information definition query is received for defining an integrated view of non-uniform information retrieved from a multiple sources across a network, and stored in multiple formats. An integrated view is created according to the information defini ...


7
Alon Yitzchak Levy: System and method for obtaining complete and correct answers from incomplete and/or incorrect databases. AT&T, Oliff & Berridge, November 16, 1999: US05987450 (5 worldwide citation)

A system and method for obtaining complete and correct answers from incomplete and/or partially incorrect databases determine if the answer to a query will be complete by determining whether the answer to the query is independent of an insertion update to the database. If the answer to the query is ...