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Ansong Ni

14 accepted papers

2025

Collaborative Reasoner: Self-Improving Social Agents with Synthetic Conversations

NeurIPS 2025poster

With increasingly powerful large language models (LLMs) and LLM-based agents tackling an ever-growing list of tasks, we envision a future where numerous LLM agents work seamlessly with other AI agents and humans to solve complex problems and enhance daily life. To achieve these goals, LLM agents mus…

Cited by 0SourceScholar
2024

FOLIO: Natural Language Reasoning with First-Order Logic

EMNLP 2024main

Large language models (LLMs) have achieved remarkable performance on a variety of natural language understanding tasks. However, existing benchmarks are inadequate in measuring the complex logical reasoning capabilities of a model. We present FOLIO, a human-annotated, logically complex and diverse d…

2024

NExT: Teaching Large Language Models to Reason about Code Execution

ICML 2024poster

A fundamental skill among human developers is the ability to understand and reason about program execution. As an example, a programmer can mentally simulate code execution in natural language to debug and repair code (aka. rubber duck debugging). However, large language models (LLMs) of code are ty…

Cited by 35SourcePDFScholar
2024

Quantifying Contamination in Evaluating Code Generation Capabilities of Language Models

ACL 2024long

While large language models have achieved remarkable performance on various code generation benchmarks, there have been growing concerns regarding potential contamination of these benchmarks as they may be leaked into pretraining and finetuning data. While recent work has investigated contamination…

2024

Spider2-V: How Far Are Multimodal Agents From Automating Data Science and Engineering Workflows?

NeurIPS 2024spotlight

Data science and engineering workflows often span multiple stages, from warehousing to orchestration, using tools like BigQuery, dbt, and Airbyte. As vision language models (VLMs) advance in multimodal understanding and code generation, VLM-based agents could potentially automate these workflows by…

2023

LEVER: Learning to Verify Language-to-Code Generation with Execution

ICML 2023poster

The advent of large language models trained on code (code LLMs) has led to significant progress in language-to-code generation. State-of-the-art approaches in this area combine LLM decoding with sample pruning and reranking using test cases or heuristics based on the execution results. However, it i…

2023

Learning Math Reasoning from Self-Sampled Correct and Partially-Correct Solutions

ICLR 2023poster

Pretrained language models have shown superior performance on many natural language processing tasks, yet they still struggle at multi-step formal reasoning tasks like grade school math problems. One key challenge of finetuning them to solve such math reasoning problems is that many existing dataset…

2022

DYLE: Dynamic Latent Extraction for Abstractive Long-Input Summarization

ACL 2022long

Transformer-based models have achieved state-of-the-art performance on short-input summarization. However, they still struggle with summarizing longer text. In this paper, we present DYLE, a novel dynamic latent extraction approach for abstractive long-input summarization. DYLE jointly trains an ext…

2022

Leveraging Locality in Abstractive Text Summarization

EMNLP 2022main

Neural attention models have achieved significant improvements on many natural language processing tasks. However, the quadratic memory complexity of the self-attention module with respect to the input length hinders their applications in long text summarization. Instead of designing more efficient…

2022

SummN: A Multi-Stage Summarization Framework for Long Input Dialogues and Documents

ACL 2022long

Text summarization helps readers capture salient information from documents, news, interviews, and meetings. However, most state-of-the-art pretrained language models (LM) are unable to efficiently process long text for many summarization tasks. In this paper, we propose SummN, a simple, flexible, a…

2022

UnifiedSKG: Unifying and Multi-Tasking Structured Knowledge Grounding with Text-to-Text Language Models

EMNLP 2022main

Structured knowledge grounding (SKG) leverages structured knowledge to complete user requests, such as semantic parsing over databases and question answering over knowledge bases. Since the inputs and outputs of SKG tasks are heterogeneous, they have been studied separately by different communities,…

2021

An Exploratory Study on Long Dialogue Summarization: What Works and What’s Next

EMNLP 2021finding

Dialogue summarization helps readers capture salient information from long conversations in meetings, interviews, and TV series. However, real-world dialogues pose a great challenge to current summarization models, as the dialogue length typically exceeds the input limits imposed by recent transform…

2021

Mitigating False-Negative Contexts in Multi-document Question Answering with Retrieval Marginalization

EMNLP 2021main

Question Answering (QA) tasks requiring information from multiple documents often rely on a retrieval model to identify relevant information for reasoning. The retrieval model is typically trained to maximize the likelihood of the labeled supporting evidence. However, when retrieving from large text…

2021

SummerTime: Text Summarization Toolkit for Non-experts

EMNLP 2021system demonstrations

Recent advances in summarization provide models that can generate summaries of higher quality. Such models now exist for a number of summarization tasks, including query-based summarization, dialogue summarization, and multi-document summarization. While such models and tasks are rapidly growing in…