Polyai Limited

Inigo Casanueva Perez

Tsung-Hsien Wen

Pei-Hao Su

Nikola Mrksic

Ivan Vulic

Matthew Steedman Henderson

Samuel John Coope

Pawel Budzianowski

Daniela Susanne Gerz

Georgios Spithourakis

A method of obtaining a response to a query inputted by a user, the method comprising: receiving a user inputted query; representing the user inputted query as a sequence of embedding vectors using a first model; encoding the sequence of embedding vectors to produce a context vector using a second model; retrieving responses with associated response vectors; scoring response vectors against the context vector, wherein the scoring is a measure of the similarity between the context vector and a response vector; and outputting the responses with the closest response vectors, wherein the first model is configured to segment a user inputted query into a sequence of units from a vocabulary of units and represent each unit in the sequence as an embedding vector, wherein at least one of the units in the vocabulary is an incomplete word, and wherein the first model comprises parameters that are stored using eight bits per parameter; and wherein the second model has been trained using corresponding queries and responses such that an encoding is used that maximises the similarity between the response vector and context vector for a corresponding query and response.

Dialogue system, a method of obtaining a response from a dialogue system, and a method of training a dialogue system

A computer implemented method comprising: receiving input data relating to a speech or text signal originating from a user; representing the input data as a first sequence of first representations, each representing a unit of the input data; representing the input data as a second sequence of second representations, each representing one of the units of the input data; using a model to determine a tag sequence from the first sequence of first representations, wherein the model comprises an attention layer using the second sequence of second representations, wherein the tag sequence comprises one or more tags from a set of tags comprising a first tag; if one or more units of the input data correspond to the first tag, determining a system dialogue act based on the part of the input data corresponding to the first tag; and outputting speech or text information specified by the determined dialogue act.

Dialogue system, a dialogue method, and a method of training

A method of obtaining a response to a query inputted by a user, the method comprising:

Response retrieval system and method

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London, United Kingdom

Inigo Casanueva Perez