Open World Classification with Adaptive Negative Samples

no code implementations • 9 Mar 2023 • Ke Bai, Guoyin Wang, Jiwei Li, Sunghyun Park, Sungjin Lee, Puyang Xu, Ricardo Henao, Lawrence Carin

Open world classification is a task in natural language processing with key practical relevance and impact.

Classification

Ranking-Enhanced Unsupervised Sentence Representation Learning

1 code implementation • 9 Sep 2022 • Yeon Seonwoo, Guoyin Wang, Changmin Seo, Sajal Choudhary, Jiwei Li, Xiang Li, Puyang Xu, Sunghyun Park, Alice Oh

In this work, we show that the semantic meaning of a sentence is also determined by nearest-neighbor sentences that are similar to the input sentence.

Contrastive Learning Data Augmentation +5

An End-to-end Approach for Handling Unknown Slot Values in Dialogue State Tracking

no code implementations • ACL 2018 • Puyang Xu, Qi Hu

We highlight a practical yet rarely discussed problem in dialogue state tracking (DST), namely handling unknown slot values.

Dialogue State Tracking Spoken Language Understanding

A Model for Temporal Dependencies in Event Streams

no code implementations • NeurIPS 2011 • Asela Gunawardana, Christopher Meek, Puyang Xu

We introduce the Piecewise-Constant Conditional Intensity Model, a model for learning temporal dependencies in event streams.