Andrzej Drygajlo

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Related publications (26)

Credence estimation and error prediction in biometric identity verification

Andrzej Drygajlo, Krzysztof Kryszczuk

This paper focuses on the estimation of credence in the correctness of classification decisions produced by a biometric identity verification system. We adopt the concept of decision credence defined in terms of subjective Bayesian degree of belief. We dem ...

2008

Reliability-based decision fusion in multimodal biometric verification systems

Jonas Richiardi, Andrzej Drygajlo, Plamen Prodanov, Krzysztof Kryszczuk

We present a methodology of reliability estimation in the multimodal biometric verification scenario. Reliability estimation has shown to be an efficient and accurate way of predicting and correcting erroneous classification decisions in both unimodal (spe ...

2007

Forensic Automatic Speaker Recognition

Andrzej Drygajlo

The existence of highly developed and fully automated telephone networks in industrialized countries and the pervasiveness of speech communication technology have resulted in the ever-increasing use of the human voice as an instrument in the commission of ...

2007

Confidence and Reliability Measures in Speaker Verification

Jonas Richiardi, Andrzej Drygajlo, Plamen Prodanov

Speaker verification is a biometric identity verification technique whose performance can be severely degraded by the presence of noise. Using a coherent notation, we reformulate and review several methods which have been proposed to quantify the uncertain ...

2006

Bayesian Networks Based Multimodality Fusion for Error Handling in Human-Robot Dialogues Under Noisy Conditions

Andrzej Drygajlo, Plamen Prodanov

In this paper, we introduce probabilistic model based architecture for error handling in human–robot spoken dialogue systems under adverse audio conditions. In this architecture, a Bayesian network framework is used for interpretation of multi-modal signal ...

2005

Aural and automatic forensic speaker recognition in mismatched conditions

Andrzej Drygajlo, Anil Alexander

In this article, we compare aural and automatic speaker recognition in the context of forensic analyses, using a Bayesian framework for the interpretation of evidence. We use perceptual tests performed by non-experts and compare their performance with that ...

2005

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