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Akim Tsvigun

9 accepted papers

2025

A Head to Predict and a Head to Question: Pre-trained Uncertainty Quantification Heads for Hallucination Detection in LLM Outputs

EMNLP 2025

LLMs have the tendency to hallucinate, i.e., to sporadically generate false or fabricated information, and users generally lack the tools to detect when this happens. Uncertainty quantification (UQ) provides a framework for assessing the reliability of model outputs, aiding in the identification of

Cited by 0SourcePDFScholar
2024

EAI: Emotional Decision-Making of LLMs in Strategic Games and Ethical Dilemmas

NeurIPS 2024poster

One of the urgent tasks of artificial intelligence is to assess the safety and alignment of large language models (LLMs) with human behavior. Conventional verification only in pure natural language processing benchmarks can be insufficient. Since emotions often influence human decisions, this paper…

Cited by 2SourcePDFScholar
2024

LLM-DetectAIve: a Tool for Fine-Grained Machine-Generated Text Detection

EMNLP 2024system demonstrations

The ease of access to large language models (LLMs) has enabled a widespread of machine-generated texts, and now it is often hard to tell whether a piece of text was human-written or machine-generated. This raises concerns about potential misuse, particularly within educational and academic domains.…

2024

M4GT-Bench: Evaluation Benchmark for Black-Box Machine-Generated Text Detection

ACL 2024long

The advent of Large Language Models (LLMs) has brought an unprecedented surge in machine-generated text (MGT) across diverse channels. This raises legitimate concerns about its potential misuse and societal implications. The need to identify and differentiate such content from genuine human-generate…

2023

Efficient Out-of-Domain Detection for Sequence to Sequence Models

ACL 2023findings

Sequence-to-sequence (seq2seq) models based on the Transformer architecture have become a ubiquitous tool applicable not only to classical text generation tasks such as machine translation and summarization but also to any other task where an answer can be represented in a form of a finite text frag…

2023

Hybrid Uncertainty Quantification for Selective Text Classification in Ambiguous Tasks

ACL 2023long

Many text classification tasks are inherently ambiguous, which results in automatic systems having a high risk of making mistakes, in spite of using advanced machine learning models. For example, toxicity detection in user-generated content is a subjective task, and notions of toxicity can be annota…

2022

Active Learning for Abstractive Text Summarization

EMNLP 2022finding

Construction of human-curated annotated datasets for abstractive text summarization (ATS) is very time-consuming and expensive because creating each instance requires a human annotator to read a long document and compose a shorter summary that would preserve the key information relayed by the origin…

2022

Towards Computationally Feasible Deep Active Learning

NAACL 2022findings

Active learning (AL) is a prominent technique for reducing the annotation effort required for training machine learning models. Deep learning offers a solution for several essential obstacles to deploying AL in practice but introduces many others. One of such problems is the excessive computational…

2022

Uncertainty Estimation of Transformer Predictions for Misclassification Detection

ACL 2022long

Uncertainty estimation (UE) of model predictions is a crucial step for a variety of tasks such as active learning, misclassification detection, adversarial attack detection, out-of-distribution detection, etc. Most of the works on modeling the uncertainty of deep neural networks evaluate these metho…