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Weizhen Qi

8 accepted papers

2022

CodeRetriever: A Large Scale Contrastive Pre-Training Method for Code Search

EMNLP 2022main

In this paper, we propose the CodeRetriever model, which learns the function-level code semantic representations through large-scale code-text contrastive pre-training. We adopt two contrastive learning schemes in CodeRetriever: unimodal contrastive learning and bimodal contrastive learning. For uni…

2022

DialogVED: A Pre-trained Latent Variable Encoder-Decoder Model for Dialog Response Generation

ACL 2022long

Dialog response generation in open domain is an important research topic where the main challenge is to generate relevant and diverse responses. In this paper, we propose a new dialog pre-training framework called DialogVED, which introduces continuous latent variables into the enhanced encoder-deco…

2022

Metric-guided Distillation: Distilling Knowledge from the Metric to Ranker and Retriever for Generative Commonsense Reasoning

EMNLP 2022main

Commonsense generation aims to generate a realistic sentence describing a daily scene under the given concepts, which is very challenging, since it requires models to have relational reasoning and compositional generalization capabilities. Previous work focuses on retrieving prototype sentences for…

2021

BANG: Bridging Autoregressive and Non-autoregressive Generation with Large Scale Pretraining

ICML 2021spotlight

In this paper, we propose BANG, a new pretraining model to Bridge the gap between Autoregressive (AR) and Non-autoregressive (NAR) Generation. AR and NAR generation can be uniformly regarded as to what extent previous tokens can be attended, and BANG bridges AR and NAR generation through designing a…

2021

EL-Attention: Memory Efficient Lossless Attention for Generation

ICML 2021spotlight

Transformer model with multi-head attention requires caching intermediate results for efficient inference in generation tasks. However, cache brings new memory-related costs and prevents leveraging larger batch size for faster speed. We propose memory-efficient lossless attention (called EL-attentio…

2021

Improving Sign Language Translation With Monolingual Data by Sign Back-Translation

CVPR 2021poster

Despite existing pioneering works on sign language translation (SLT), there is a non-trivial obstacle, i.e., the limited quantity of parallel sign-text data. To tackle this parallel data bottleneck, we propose a sign back-translation (SignBT) approach, which incorporates massive spoken language text…

Cited by 249PDFScholar
2021

POS-Constrained Parallel Decoding for Non-autoregressive Generation

ACL 2021long

The multimodality problem has become a major challenge of existing non-autoregressive generation (NAG) systems. A common solution often resorts to sequence-level knowledge distillation by rebuilding the training dataset through autoregressive generation (hereinafter known as “teacher AG”). The succe…

2020

Multi-level Alignment Pretraining for Multi-lingual Semantic Parsing

COLING 2020main

In this paper, we present a multi-level alignment pretraining method in a unified architecture formulti-lingual semantic parsing. In this architecture, we use an adversarial training method toalign the space of different languages and use sentence level and word level parallel corpus assupervision i…