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Song Feng

10 accepted papers

2025

Structured List-Grounded Question Answering

COLING 2025main

Document-grounded dialogue systems aim to answer user queries by leveraging external information. Previous studies have mainly focused on handling free-form documents, often overlooking structured data such as lists, which can represent a range of nuanced semantic relations. Motivated by the observa…

Cited by 0SourcePDFScholar
2024

TofuEval: Evaluating Hallucinations of LLMs on Topic-Focused Dialogue Summarization

NAACL 2024long

Single document news summarization has seen substantial progress on faithfulness in recent years, driven by research on the evaluation of factual consistency, or hallucinations. We ask whether these advances carry over to other text summarization domains. We propose a new evaluation benchmark on top…

2023

DFEE: Interactive DataFlow Execution and Evaluation Kit

AAAI 2023technical

DataFlow has been emerging as a new paradigm for building task-oriented chatbots due to its expressive semantic representations of the dialogue tasks. Despite the availability of a large dataset SMCalFlow and a simplified syntax, the development and evaluation of DataFlow-based chatbots remain chall…

2021

Does Structure Matter? Encoding Documents for Machine Reading Comprehension

NAACL 2021long

Machine reading comprehension is a challenging task especially for querying documents with deep and interconnected contexts. Transformer-based methods have shown advanced performances on this task; however, most of them still treat documents as a flat sequence of tokens. This work proposes a new Tra…

Cited by 8SourcePDFScholar
2021

Explaining Neural Network Predictions on Sentence Pairs via Learning Word-Group Masks

NAACL 2021long

Explaining neural network models is important for increasing their trustworthiness in real-world applications. Most existing methods generate post-hoc explanations for neural network models by identifying individual feature attributions or detecting interactions between adjacent features. However, f…

2021

MultiDoc2Dial: Modeling Dialogues Grounded in Multiple Documents

EMNLP 2021main

We propose MultiDoc2Dial, a new task and dataset on modeling goal-oriented dialogues grounded in multiple documents. Most previous works treat document-grounded dialogue modeling as machine reading comprehension task based on a single given document or passage. In this work, we aim to address more r…

2020

Learning Lane Graph Representations for Motion Forecasting

ECCV 2020poster

We propose a motion forecasting model that exploits a novel structured map representation as well as actor-map interactions. Instead of encoding vectorized maps as raster images, we construct a lane graph from raw map data to explicitly preserve the map structure. To capture the complex topology and…

2019

Discrete Residual Flow for Probabilistic Pedestrian Behavior Prediction

CoRL 2019

Self-driving vehicles plan around both static and dynamic objects, applying predictive models of behavior to estimate future locations of the objects in the environment. However, future behavior is inherently uncertain, and models of motion that produce deterministic outputs are limited to short tim

Cited by 0SourcePDFScholar
2019

Drill-down: Interactive Retrieval of Complex Scenes using Natural Language Queries

NeurIPS 2019poster

This paper explores the task of interactive image retrieval using natural language queries, where a user progressively provides input queries to refine a set of retrieval results. Moreover, our work explores this problem in the context of complex image scenes containing multiple objects. We propose…