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Rafet Sifa

4 accepted papers

2026

Knowing When Not to Predict: Self Supervised Learning and Abstention for Safer DR Screening

IJCAI 2026

Self-supervised learning (SSL) is now a standard way to pretrain medical image models, but performance is still mostly judged by downstream accuracy. For safety-critical screening tasks such as diabetic retinopathy grading, this is not enough: a model must also know when its predictions are unreliab

Cited by 0Scholar
2025

Resource-Efficient Anonymization of Textual Data via Knowledge Distillation from Large Language Models

COLING 2025industry

Protecting personal and sensitive information in textual data is increasingly crucial, especially when leveraging large language models (LLMs) that may pose privacy risks due to their API-based access. We introduce a novel approach and pipeline for anonymizing text across arbitrary domains without t…

Cited by 0SourcePDFScholar
2024

Tokenizer Choice For LLM Training: Negligible or Crucial?

NAACL 2024findings

The recent success of large language models (LLMs) has been predominantly driven by curating the training dataset composition, scaling of model architectures and dataset sizes and advancements in pretraining objectives, leaving tokenizer influence as a blind spot.Shedding light on this underexplored…

2023

Is Reinforcement Learning (Not) for Natural Language Processing: Benchmarks, Baselines, and Building Blocks for Natural Language Policy Optimization

ICLR 2023top-25%

We tackle the problem of aligning pre-trained large language models (LMs) with human preferences. If we view text generation as a sequential decision-making problem, reinforcement learning (RL) appears to be a natural conceptual framework. However, using RL for LM-based generation faces empirical ch…