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Tongfei Chen

11 accepted papers

2026

AMLRIS: Alignment-aware Masked Learning for Referring Image Segmentation

ICLR 2026poster

Referring Image Segmentation (RIS) aims to segment the object in an image uniquely referred to by a natural language expression. However, RIS training often contains hard-to-align and instance-specific visual signals; optimizing on such pixels injects misleading gradients and drives the model in the…

Cited by 0SourcecodeScholar
2026

UrbanGS: Efficient and Scalable Architecture for Geometrically Accurate Large-Scene Reconstruction

ICLR 2026poster

While 3D Gaussian Splatting (3DGS) delivers high-quality, real-time rendering for bounded scenes, its extension to large-scale urban environments introduces critical challenges in geometric consistency, memory efficiency, and computational scalability. We present UrbanGS, a scalable reconstruction f…

Cited by 0SourcecodeScholar
2025

Prompt as Knowledge Bank: Boost Vision-language model via Structural Representation for zero-shot medical detection

ICLR 2025poster

Zero-shot medical detection can further improve detection performance without relying on annotated medical images even upon the fine-tuned model, showing great clinical value. Recent studies leverage grounded vision-language models (GLIP) to achieve this by using detailed disease descriptions as pro…

Cited by 0SourcePDFScholar
2024

Learning to Retrieve Iteratively for In-Context Learning

EMNLP 2024main

We introduce iterative retrieval, a novel framework that empowers retrievers to make iterative decisions through policy optimization. Finding an optimal portfolio of retrieved items is a combinatorial optimization problem, generally considered NP-hard. This approach provides a learned approximation…

Cited by 5SourcePDFScholar
2023

A Unified View of Evaluation Metrics for Structured Prediction

EMNLP 2023long main

We present a conceptual framework that unifies a variety of evaluation metrics for different structured prediction tasks (e.g. event and relation extraction, syntactic and semantic parsing). Our framework requires representing the outputs of these tasks as objects of certain data types, and derives…

Cited by 0SourcecodeScholar
2023

BenchCLAMP: A Benchmark for Evaluating Language Models on Syntactic and Semantic Parsing

NeurIPS 2023poster

Recent work has shown that generation from a prompted or fine-tuned language model can perform well at semantic parsing when the output is constrained to be a valid semantic representation. We introduce BenchCLAMP, a Benchmark to evaluate Constrained LAnguage Model Parsing, that includes context-fre…

2019

Confidence Scoring Using Whitebox Meta-models with Linear Classifier Probes

AISTATS 2019poster

We propose a novel confidence scoring mechanism for deep neural networks based on a two-model paradigm involving a base model and a meta-model. The confidence score is learned by the meta-model observing the base model succeeding/failing at its task. As features to the meta-model, we investigate lin…

2019

End-to-end Anchored Speech Recognition

ICASSP 2019accepted

Voice-controlled house-hold devices, like Amazon Echo or Google Home, face the problem of performing speech recognition of device-directed speech in the presence of interfering background speech, i.e., background noise and interfering speech from another person or media device in proximity need to b…

Cited by 20SourceScholar
2018

A Pruned Rnnlm Lattice-Rescoring Algorithm for Automatic Speech Recognition

ICASSP 2018accepted

Lattice-rescoring is a common approach to take advantage of recurrent neural language models in ASR, where a word-lattice is generated from 1st-pass decoding and the lattice is then rescored with a neural model, and an <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/…

Cited by 0SourceScholar