Texas Instruments Corporation

Kenneth M Ross

Craig W Thompson

Richard M Saenz

Harry R Tennant

A natural language interface for a computer system restricts inputs from a user to those which generate valid input sentences. The user selects a next input word from a menu showing which words are valid. When an input is selected, a parser uses a predefined grammar to determine which words are valid continuations after the selected word, and whether a complete sentence has been entered. Valid next words are presented to the user in menu form so that a next selection can be made. If an ambiguous complete sentence is entered, the interface allows the user to select the desired meaning therefor. The grammer can be context free grammar, and can use an associated lexicon to define elements therein.

Menu-based natural language understanding system

A system for interactively generating a natural-language input interface, without any computer-skill programming work being required. The natural-language menu interface thus generated provides a menu-selection technique whereby a totally unskilled computer user, who need not even be able to type, can access a relational or hierarchical database, without any possibility of error. That is, the user addresses commands to the database system simply by selecting words from an appropriate menu of words which could legally follow in commands, so that the user inputs commands which are phrased entirely in English, and these commands cannot be misunderstood by the database system. The present invention provides an automatic interactive system whereby such an interface is constructed. The database is itself loaded in, and the interactive interface-construction system then addresses a series of queries to the user's technical expert, in response to which the user must classify, which tables in the database are to be used, which attributes of particular tables in the database are key attributes, and, in particular, what the various connections between tables in the database are and what natural-language connecting phrases will describe those relations.

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Bedford, TX, United States of America

Kenneth M Ross