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Ariel Gera

10 accepted papers

2026

Guided Query Refinement: Multimodal Hybrid Retrieval with Test-Time Optimization

ICLR 2026poster

Multimodal encoders have pushed the boundaries of visual document retrieval, matching textual tokens directly to image patches and achieving state-of-the-art performance on challenging benchmarks. Recent models relying on this paradigm have massively scaled the dimensionality of their query and docu…

Cited by 0SourcecodeScholar
2025

Debatable Intelligence: Benchmarking LLM Judges via Debate Speech Evaluation

EMNLP 2025

We introduce Debate Speech Evaluation as a novel and challenging benchmark for assessing LLM judges. Evaluating debate speeches requires a deep understanding of the speech at multiple levels, including argument strength and relevance, the coherence and organization of the speech, the appropriateness

2025

JuStRank: Benchmarking LLM Judges for System Ranking

ACL 2025long

Given the rapid progress of generative AI, there is a pressing need to systematically compare and choose between the numerous models and configurations available. The scale and versatility of such evaluations make the use of LLM-based judges a compelling solution for this challenge. Crucially, this…

Cited by 0SourcePDFScholar
2024

Efficient Benchmarking (of Language Models)

NAACL 2024long

The increasing versatility of language models (LMs) has given rise to a new class of benchmarks that comprehensively assess a broad range of capabilities. Such benchmarks are associated with massive computational costs, extending to thousands of GPU hours per model. However, the efficiency aspect of…

Cited by 33SourcePDFScholar
2024

Label-Efficient Model Selection for Text Generation

ACL 2024long

Model selection for a given target task can be costly, as it may entail extensive annotation of the quality of outputs of different models. We introduce DiffUse, an efficient method to make an informed decision between candidate text generation models based on preference annotations. DiffUse reduces…

Cited by 4SourcePDFScholar
2024

Unitxt: Flexible, Shareable and Reusable Data Preparation and Evaluation for Generative AI

NAACL 2024system demonstrations

In the dynamic landscape of generative NLP, traditional text processing pipelines limit research flexibility and reproducibility, as they are tailored to specific dataset, task, and model combinations. The escalating complexity, involving system prompts, model-specific formats, instructions, and mor…

2023

Active Learning for Natural Language Generation

EMNLP 2023long main

The field of Natural Language Generation (NLG) suffers from a severe shortage of labeled data due to the extremely expensive and time-consuming process involved in manual annotation. A natural approach for coping with this problem is active learning (AL), a well-known machine learning technique for…

Cited by 0SourceScholar
2023

The Benefits of Bad Advice: Autocontrastive Decoding across Model Layers

ACL 2023long

Applying language models to natural language processing tasks typically relies on the representations in the final model layer, as intermediate hidden layer representations are presumed to be less informative. In this work, we argue that due to the gradual improvement across model layers, additional…

2022

Cluster & Tune: Boost Cold Start Performance in Text Classification

ACL 2022long

In real-world scenarios, a text classification task often begins with a cold start, when labeled data is scarce. In such cases, the common practice of fine-tuning pre-trained models, such as BERT, for a target classification task, is prone to produce poor performance. We suggest a method to boost th…

2022

Zero-Shot Text Classification with Self-Training

EMNLP 2022main

Recent advances in large pretrained language models have increased attention to zero-shot text classification. In particular, models finetuned on natural language inference datasets have been widely adopted as zero-shot classifiers due to their promising results and off-the-shelf availability. Howev…