知识库(Knowledge Base)是知识工程中结构化,易操作,易利用,全面有组织的知识集群,是针对某一(或某些)领域问题求解的需要,采用某种(或若干)知识表示方式在计算 机存储器中 存储、组织、管理和使用的互相联系的知识片集合。这些知识片包括与领域相关的理论知识、事实数据,由专家经验得到的启发式知识,如某领域内有关的定义、定 理和运算法则以及常识性知识等。

VIP内容

特定领域的知识库(KB)从各种数据源精心整理而来,为专业人员提供了宝贵的参阅咨询。由于自然语言理解和人工智能的最新进展,会话系统使这些KBs很容易被专业人员访问,并且越来越受欢迎。尽管在开放域应用程序中越来越多地使用各种会话系统,但特定于域的会话系统的需求是完全不同的,而且具有挑战性。在本文中,我们针对特定领域的KBs提出了一个基于本体的对话系统。特别是,我们利用领域本体中固有的领域知识来识别用户意图,并利用相应的实体来引导对话空间。我们结合了来自领域专家的反馈来进一步细化这些模式,并使用它们为会话模型生成训练样本,减轻了会话设计人员的沉重负担。我们已经将我们的创新集成到一个对话代理中,该代理关注医疗保健,这是IBM Micromedex产品的一个特性。

https://dl.acm.org/doi/abs/10.1145/3318464.3386139

成为VIP会员查看完整内容
0
16

最新论文

This paper explores learning rich self-supervised entity representations from large amounts of the associated text. Once pre-trained, these models become applicable to multiple entity-centric tasks such as ranked retrieval, knowledge base completion, question answering, and more. Unlike other methods that harvest self-supervision signals based merely on a local context within a sentence, we radically expand the notion of context to include any available text related to an entity. This enables a new class of powerful, high-capacity representations that can ultimately distill much of the useful information about an entity from multiple text sources, without any human supervision. We present several training strategies that, unlike prior approaches, learn to jointly predict words and entities -- strategies we compare experimentally on downstream tasks in the TV-Movies domain, such as MovieLens tag prediction from user reviews and natural language movie search. As evidenced by results, our models match or outperform competitive baselines, sometimes with little or no fine-tuning, and can scale to very large corpora. Finally, we make our datasets and pre-trained models publicly available. This includes Reviews2Movielens (see https://goo.gle/research-docent ), mapping the up to 1B word corpus of Amazon movie reviews (He and McAuley, 2016) to MovieLens tags (Harper and Konstan, 2016), as well as Reddit Movie Suggestions (see https://urikz.github.io/docent ) with natural language queries and corresponding community recommendations.

0
0
下载
预览
父主题
子主题
Top