Changhan Wang

Changhan is a research engineer at Facebook AI Research in New York, focusing on natural language and speech processing. He earned an M.S. in computer science from University of Michigan and a B.S. in mathematics from Zhejiang University.

Changhan's Publications

April 07, 2020

RESEARCH

COMPUTER VISION

VizSeq: A Visual Analysis Toolkit for Text Generation Tasks

Automatic evaluation of text generation tasks (e.g. machine translation, text summarization, image captioning and video description) usually relies heavily on task-specific metrics, such as BLEU (Papineni et al., 2002) and ROUGE (Lin, 2004).…

Changhan Wang, Anirudh Jain, Danlu Chen, Jiatao Gu,

April 07, 2020

April 07, 2020

RESEARCH

COMPUTER VISION

Does Object Recognition Work for Everyone?

The paper analyzes the accuracy of publicly available object-recognition systems on a geographically diverse dataset. This dataset contains household items and was designed to have a more representative geographical coverage than commonly used…

Terrance DeVries, Ishan Misra, Changhan Wang, Laurens van der Maaten,

April 07, 2020

April 07, 2020

RESEARCH

COMPUTER VISION

Dynamic Meta-Embeddings for Improved Sentence Representations

While one of the first steps in many NLP systems is selecting what pre-trained word embeddings to use, we argue that such a step is better left for neural networks to figure out by themselves. To that end, we introduce dynamic meta-embeddings,…

Douwe Kiela, Changhan Wang, Kyunghyun Cho,

April 07, 2020