779 research outputs found
A Survey on Recent Advances in LLM-Based Multi-turn Dialogue Systems
This survey provides a comprehensive review of research on multi-turn
dialogue systems, with a particular focus on multi-turn dialogue systems based
on large language models (LLMs). This paper aims to (a) give a summary of
existing LLMs and approaches for adapting LLMs to downstream tasks; (b)
elaborate recent advances in multi-turn dialogue systems, covering both
LLM-based open-domain dialogue (ODD) and task-oriented dialogue (TOD) systems,
along with datasets and evaluation metrics; (c) discuss some future emphasis
and recent research problems arising from the development of LLMs and the
increasing demands on multi-turn dialogue systems.Comment: 35 pages, 10 figures, ACM Computing Survey
Foundation Metrics: Quantifying Effectiveness of Healthcare Conversations powered by Generative AI
Generative Artificial Intelligence is set to revolutionize healthcare
delivery by transforming traditional patient care into a more personalized,
efficient, and proactive process. Chatbots, serving as interactive
conversational models, will probably drive this patient-centered transformation
in healthcare. Through the provision of various services, including diagnosis,
personalized lifestyle recommendations, and mental health support, the
objective is to substantially augment patient health outcomes, all the while
mitigating the workload burden on healthcare providers. The life-critical
nature of healthcare applications necessitates establishing a unified and
comprehensive set of evaluation metrics for conversational models. Existing
evaluation metrics proposed for various generic large language models (LLMs)
demonstrate a lack of comprehension regarding medical and health concepts and
their significance in promoting patients' well-being. Moreover, these metrics
neglect pivotal user-centered aspects, including trust-building, ethics,
personalization, empathy, user comprehension, and emotional support. The
purpose of this paper is to explore state-of-the-art LLM-based evaluation
metrics that are specifically applicable to the assessment of interactive
conversational models in healthcare. Subsequently, we present an comprehensive
set of evaluation metrics designed to thoroughly assess the performance of
healthcare chatbots from an end-user perspective. These metrics encompass an
evaluation of language processing abilities, impact on real-world clinical
tasks, and effectiveness in user-interactive conversations. Finally, we engage
in a discussion concerning the challenges associated with defining and
implementing these metrics, with particular emphasis on confounding factors
such as the target audience, evaluation methods, and prompt techniques involved
in the evaluation process.Comment: 13 pages, 4 figures, 2 tables, journal pape
Query Resolution for Conversational Search with Limited Supervision
In this work we focus on multi-turn passage retrieval as a crucial component
of conversational search. One of the key challenges in multi-turn passage
retrieval comes from the fact that the current turn query is often
underspecified due to zero anaphora, topic change, or topic return. Context
from the conversational history can be used to arrive at a better expression of
the current turn query, defined as the task of query resolution. In this paper,
we model the query resolution task as a binary term classification problem: for
each term appearing in the previous turns of the conversation decide whether to
add it to the current turn query or not. We propose QuReTeC (Query Resolution
by Term Classification), a neural query resolution model based on bidirectional
transformers. We propose a distant supervision method to automatically generate
training data by using query-passage relevance labels. Such labels are often
readily available in a collection either as human annotations or inferred from
user interactions. We show that QuReTeC outperforms state-of-the-art models,
and furthermore, that our distant supervision method can be used to
substantially reduce the amount of human-curated data required to train
QuReTeC. We incorporate QuReTeC in a multi-turn, multi-stage passage retrieval
architecture and demonstrate its effectiveness on the TREC CAsT dataset.Comment: SIGIR 2020 full conference pape
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