Search Results for author: Changchun Li

Found 5 papers, 1 papers with code

Learning with Partial Labels from Semi-supervised Perspective

1 code implementation24 Nov 2022 Ximing Li, Yuanzhi Jiang, Changchun Li, Yiyuan Wang, Jihong Ouyang

Inspired by the impressive success of deep Semi-Supervised (SS) learning, we transform the PL learning problem into the SS learning problem, and propose a novel PL learning method, namely Partial Label learning with Semi-supervised Perspective (PLSP).

Contrastive Learning Partial Label Learning +1

Who Is Your Right Mixup Partner in Positive and Unlabeled Learning

no code implementations ICLR 2022 Changchun Li, Ximing Li, Lei Feng, Jihong Ouyang

In this paper, we propose a novel PU learning method, namely Positive and unlabeled learning with Partially Positive Mixup (P3Mix), which simultaneously benefits from data augmentation and supervision correction with a heuristic mixup technique.

Data Augmentation

Semi-Supervised Text Classification with Balanced Deep Representation Distributions

no code implementations ACL 2021 Changchun Li, Ximing Li, Jihong Ouyang

They initialize the deep classifier by training over labeled texts; and then alternatively predict unlabeled texts as their pseudo-labels and train the deep classifier over the mixture of labeled and pseudo-labeled texts.

Semi-Supervised Text Classification text-classification

Topic representation: finding more representative words in topic models

no code implementations23 Oct 2018 Jinjin Chi, Jihong Ouyang, Changchun Li, Xueyang Dong, Xi-Ming Li, Xinhua Wang

The top word list, i. e., the top-M words with highest marginal probability in a given topic, is the standard topic representation in topic models.

Topic Models

Integrating Topic Modeling with Word Embeddings by Mixtures of vMFs

no code implementations COLING 2016 Xi-Ming Li, Jinjin Chi, Changchun Li, Jihong Ouyang, Bo Fu

Gaussian LDA integrates topic modeling with word embeddings by replacing discrete topic distribution over word types with multivariate Gaussian distribution on the embedding space.

Topic Models Word Embeddings

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