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Xiangpeng Wei

12 accepted papers

2025

DAPO: An Open-Source LLM Reinforcement Learning System at Scale

NeurIPS 2025poster

Inference scaling empowers LLMs with unprecedented reasoning ability, with reinforcement learning as the core technique to elicit complex reasoning. However, key technical details of state-of-the-art reasoning LLMs are concealed (such as in OpenAI o1 blog and DeepSeek R1 technical report), thus the…

Cited by 0SourceScholar
2024

MoNMT: Modularly Leveraging Monolingual and Bilingual Knowledge for Neural Machine Translation

COLING 2024main

The effective use of monolingual and bilingual knowledge represents a critical challenge within the neural machine translation (NMT) community. In this paper, we propose a modular strategy that facilitates the cooperation of these two types of knowledge in translation tasks, while avoiding the issue…

2023

Bridging the Domain Gaps in Context Representations for k-Nearest Neighbor Neural Machine Translation

ACL 2023long

k-Nearest neighbor machine translation (kNN-MT) has attracted increasing attention due to its ability to non-parametrically adapt to new translation domains. By using an upstream NMT model to traverse the downstream training corpus, it is equipped with a datastore containing vectorized key-value pai…

2023

EMMA-X: An EM-like Multilingual Pre-training Algorithm for Cross-lingual Representation Learning

NeurIPS 2023poster

Expressing universal semantics common to all languages is helpful to understand the meanings of complex and culture-specific sentences. The research theme underlying this scenario focuses on learning universal representations across languages with the usage of massive parallel corpora. However, due…

Cited by 2SourcePDFScholar
2023

Fantastic Expressions and Where to Find Them: Chinese Simile Generation with Multiple Constraints

ACL 2023long

Similes occur in the creative context of describing a concept (i.e., tenor) by making a literally false yet figuratively meaningful comparison to another (i.e., vehicle). Previous efforts form simile generation as a context-free generation task, focusing on simile-style transfer or writing a simile…

2023

MMNMT: Modularizing Multilingual Neural Machine Translation with Flexibly Assembled MoE and Dense Blocks

EMNLP 2023long main

Mixture-of-Experts (MoE) based sparse architectures can significantly increase model capacity with sublinear computational overhead, which are hence widely used in massively multilingual neural machine translation (MNMT). However, they are prone to overfitting on low-resource language translation.…

Cited by 0SourcecodeScholar
2022

Guiding Neural Machine Translation with Semantic Kernels

EMNLP 2022finding

Machine Translation task has made great progress with the help of auto-regressive decoding paradigm and Transformer architecture. In this paradigm, though the encoder can obtain global source representations, the decoder can only use translation history to determine the current word. Previous promis…

Cited by 1SourcePDFScholar
2022

Learning to Generalize to More: Continuous Semantic Augmentation for Neural Machine Translation

ACL 2022long

The principal task in supervised neural machine translation (NMT) is to learn to generate target sentences conditioned on the source inputs from a set of parallel sentence pairs, and thus produce a model capable of generalizing to unseen instances. However, it is commonly observed that the generaliz…

2022

SUN: Exploring Intrinsic Uncertainties in Text-to-SQL Parsers

COLING 2022main

This paper aims to improve the performance of text-to-SQL parsing by exploring the intrinsic uncertainties in the neural network based approaches (called SUN). From the data uncertainty perspective, it is indisputable that a single SQL can be learned from multiple semantically-equivalent questions.…

2022

WR-One2Set: Towards Well-Calibrated Keyphrase Generation

EMNLP 2022main

Keyphrase generation aims to automatically generate short phrases summarizing an input document. The recently emerged ONE2SET paradigm (Ye et al., 2021) generates keyphrases as a set and has achieved competitive performance. Nevertheless, we observe serious calibration errors outputted by ONE2SET, e…

2021

On Learning Universal Representations Across Languages

ICLR 2021poster

Recent studies have demonstrated the overwhelming advantage of cross-lingual pre-trained models (PTMs), such as multilingual BERT and XLM, on cross-lingual NLP tasks. However, existing approaches essentially capture the co-occurrence among tokens through involving the masked language model (MLM) obj…

Cited by 87SourcePDFScholar
2020

Bi-directional CognitiveThinking Network for Machine Reading Comprehension

COLING 2020main

We propose a novel Bi-directional Cognitive Knowledge Framework (BCKF) for reading comprehension from the perspective of complementary learning systems theory. It aims to simulate two ways of thinking in the brain to answer questions, including reverse thinking and inertial thinking. To validate the…

Cited by 12SourcePDFScholar