Invention Grant
- Patent Title: Method and system for resolving abstract anaphora using hierarchically-stacked recurrent neural network (RNN)
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Application No.: US16506521Application Date: 2019-07-09
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Publication No.: US11023686B2Publication Date: 2021-06-01
- Inventor: Puneet Agarwal , Prerna Khurana , Gautam Shroff , Lovekesh Vig
- Applicant: Tata Consultancy Services Limited
- Applicant Address: IN Mumbai
- Assignee: Tata Consultancy Services Limited
- Current Assignee: Tata Consultancy Services Limited
- Current Assignee Address: IN Mumbai
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Priority: IN201821025758 20180710
- Main IPC: G06F17/00
- IPC: G06F17/00 ; G06F40/30 ; G06F40/295 ; G06N3/08 ; H04L12/58

Abstract:
Conversational systems are required to be capable of handling more sophisticated interactions than providing factual answers only. Such interactions are handled by resolving abstract anaphoric references in conversational systems which includes antecedent fact references and posterior fact references. The present disclosure resolves abstract anaphoric references in conversational systems using hierarchically stacked neural networks. In the present disclosure, a deep hierarchical maxpool network based model is used to obtain a representation of each utterance received from users and a representation of one or more generated sequences of utterances. The obtained representations are further used to identify contextual dependencies with in the one or more generated sequences which helps in resolving abstract anaphoric references in conversational systems. Further, a response for an incoming sequence of utterances is retrieved based on classification of incoming sequence of utterances into one or more pre-created responses. The proposed model takes lesser time to retrain.
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