← Search

Tong Niu

9 accepted papers

2025

RAM2C: A Liberal Arts Educational Chatbot based on Retrieval-augmented Multi-role Multi-expert Collaboration

COLING 2025main

Recently, many studies focus on utilizing large language models (LLMs) into educational dialogues. Especially, within liberal arts dialogues, educators must balance Humanized communication, Teaching expertise, and Safety-ethics (HTS), besides the subject knowledge itself. However, due to collecting…

2024

A Rigid-Flexible Coupling Oscillator for Pneumatic Autonomous Robots

RA-L 2024

The traditional oscillators are limited by their material characteristics and structural configuration, exhibiting a low oscillation frequency and low output power under pressure input. This results in a slow locomotion speed for the robot. To address these limitations, this work presents a compact,

Cited by 1SourceScholar
2024

DIVKNOWQA: Assessing the Reasoning Ability of LLMs via Open-Domain Question Answering over Knowledge Base and Text

NAACL 2024findings

Large Language Models (LLMs) have exhibited impressive generation capabilities, but they suffer from hallucinations when solely relying on their internal knowledge, especially when answering questions that require less commonly known information. Retrievalaugmented LLMs have emerged as a potential s…

Cited by 7SourcePDFScholar
2022

FCGCL: Fine- and Coarse-Granularity Contrastive Learning for Speech Translation

EMNLP 2022finding

It is notoriously difficult to implement end-to-end speech translation (E2E-ST) model because of the task complexity and data scarcity. Existing techniques often attempt to carry out implicit knowledge transfer from machine translation (MT) to ST model by imposing various constraints. However, in th…

2022

MixQG: Neural Question Generation with Mixed Answer Types

NAACL 2022findings

Asking good questions is an essential ability for both human and machine intelligence. However, existing neural question generation approaches mainly focus on short factoid type of answers. In this paper, we introduce a neural question generator, MixQG, to bridge this gap. We combine nine question a…

2022

OneAligner: Zero-shot Cross-lingual Transfer with One Rich-Resource Language Pair for Low-Resource Sentence Retrieval

ACL 2022findings

Aligning parallel sentences in multilingual corpora is essential to curating data for downstream applications such as Machine Translation. In this work, we present OneAligner, an alignment model specially designed for sentence retrieval tasks. This model is able to train on only one language pair an…

Cited by 5SourcePDFScholar
2021

Char2Subword: Extending the Subword Embedding Space Using Robust Character Compositionality

EMNLP 2021finding

Byte-pair encoding (BPE) is a ubiquitous algorithm in the subword tokenization process of language models as it provides multiple benefits. However, this process is solely based on pre-training data statistics, making it hard for the tokenizer to handle infrequent spellings. On the other hand, thoug…

Cited by 20SourcePDFScholar
2021

CoCo: Controllable Counterfactuals for Evaluating Dialogue State Trackers

ICLR 2021poster

Dialogue state trackers have made significant progress on benchmark datasets, but their generalization capability to novel and realistic scenarios beyond the held- out conversations is less understood. We propose controllable counterfactuals (COCO) to bridge this gap and evaluate dialogue state trac…

2021

Unsupervised Paraphrasing with Pretrained Language Models

EMNLP 2021main

Paraphrase generation has benefited extensively from recent progress in the designing of training objectives and model architectures. However, previous explorations have largely focused on supervised methods, which require a large amount of labeled data that is costly to collect. To address this dra…