Amazon Technologies, Inc.

Chengyuan Ma

Chenlei Guo

Xing Fan

Kai Wei

Shuting Tang

Sixing Lu

Xiaohu Liu

Zhongkai Sun

Fangfu Li

Techniques for determining alternative input representations using entity expansion and entity weighting are described. An entity expansion knowledge base is built by extracting entities from user input-system response pairs that resulted in satisfactory experiences. An extracted entity is associated with an initial score based on it being included in the user input only, in the system response only or both the user input and the system response. Entities co-occurring in the user input-system response pair are connected in the knowledge base. An overall score is associated with the connections based on the initial scores of the connected entities. Using the knowledge base, expansion entities related to an entity included in a user input are determined, and the expansion entities and user input entity are weighted. The weighting of the entities involves assigning a level to each entity based on pairs of user input-alternative input representation.

Alternative input representations

A system is provided for a self-learning policy engine that can be used by various spoken language understanding (SLU) processing components. The system also provides for sharing contextual information from processing performed by an upstream SLU component to a downstream SLU component to facilitate decision making by the downstream SLU component. The system also provides for a SLU component to select from a variety of actions to take. A SLU component may implement an instance of the self-learning policy that is specifically configured for the particular SLU component.

Spoken language understanding system

Techniques for presenting an alternative input representation to a user for testing and collecting processing data are described. A system may determine that a received spoken input triggers an alternative input representation for presenting. The system may output data corresponding to the alternative input representation in response to the received spoken input, and the system may receive user feedback from the user. The system may store the user feedback and processing data corresponding to processing of the alternative input representation, which may be later used to update an alternative input component configured to determine alternative input representations for spoken inputs.

Alternative input representations for speech inputs

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Bellevue, WA, United States of America

Chengyuan Ma