7,826 research outputs found
Convolutional-Match Networks for Question Answering
In this paper, we present a simple, yet effective,
attention and memory mechanism that is reminis-
cent of Memory Networks and we demonstrate it
in question-answering scenarios. Our mechanism
is based on four simple premises: a) memories can
be formed from word sequences by using convo-
lutional networks; b) distance measurements can
be taken at a neuronal level; c) a recursive soft-
max function can be used for attention; d) extensive
weight sharing can help profoundly. We achieve
state-of-the-art results in the bAbI tasks, outper-
forming Memory Networks and the Differentiable
Neural Computer, both in terms of accuracy and
stability (i.e. variance) of results
Neural Architecture for Question Answering Using a Knowledge Graph and Web Corpus
In Web search, entity-seeking queries often trigger a special Question
Answering (QA) system. It may use a parser to interpret the question to a
structured query, execute that on a knowledge graph (KG), and return direct
entity responses. QA systems based on precise parsing tend to be brittle: minor
syntax variations may dramatically change the response. Moreover, KG coverage
is patchy. At the other extreme, a large corpus may provide broader coverage,
but in an unstructured, unreliable form. We present AQQUCN, a QA system that
gracefully combines KG and corpus evidence. AQQUCN accepts a broad spectrum of
query syntax, between well-formed questions to short `telegraphic' keyword
sequences. In the face of inherent query ambiguities, AQQUCN aggregates signals
from KGs and large corpora to directly rank KG entities, rather than commit to
one semantic interpretation of the query. AQQUCN models the ideal
interpretation as an unobservable or latent variable. Interpretations and
candidate entity responses are scored as pairs, by combining signals from
multiple convolutional networks that operate collectively on the query, KG and
corpus. On four public query workloads, amounting to over 8,000 queries with
diverse query syntax, we see 5--16% absolute improvement in mean average
precision (MAP), compared to the entity ranking performance of recent systems.
Our system is also competitive at entity set retrieval, almost doubling F1
scores for challenging short queries.Comment: Accepted to Information Retrieval Journa
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