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Reza Esfandiarpoor

4 accepted papers

2025

An Adaptive Method for Weak Supervision with Drifting Data

AISTATS 2025poster

We introduce an adaptive method with formal quality guarantees for weak supervision in a non-stationary setting. Our goal is to infer the unknown labels of a sequence of data by using weak supervision sources that provide independent noisy signals of the correct classification for each data point. T…

Cited by 0SourceScholar
2025

Beyond Contrastive Learning: Synthetic Data Enables List-wise Training with Multiple Levels of Relevance

EMNLP 2025

Although synthetic data has changed various aspects of information retrieval (IR) pipelines, the main training paradigm remains: contrastive learning with binary relevance labels, where one positive document is compared against several negatives using the InfoNCE loss. This objective treats all docu

2024

Follow-Up Differential Descriptions: Language Models Resolve Ambiguities for Image Classification

ICLR 2024poster

A promising approach for improving the performance of vision-language models like CLIP for image classification is to extend the class descriptions (i.e., prompts) with related attributes, e.g., using brown sparrow instead of sparrow. However, current zero-shot methods select a subset of attributes…

2024

If CLIP Could Talk: Understanding Vision-Language Model Representations Through Their Preferred Concept Descriptions

EMNLP 2024main

Recent works often assume that Vision-Language Model (VLM) representations are based on visual attributes like shape. However, it is unclear to what extent VLMs prioritize this information to represent concepts. We propose Extract and Explore (EX2), a novel approach to characterize textual features…