Person

Norman Hoon Thian Poh

This person is no longer with EPFL

Related publications (48)

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Estimating the Confidence Interval of Expected Performance Curve in Biometric Authentication Using Joint Bootstrap

Samy Bengio, Norman Hoon Thian Poh

Evaluating biometric authentication performance is a complex task because the performance depends on the user set size, composition and the choice of samples. We propose to reduce the performance dependency of these three factors by deriving appropriate co ...

IDIAP2006

Revisiting Doddington's Zoo: A Systematic Method to Assess User-dependent Variabilities

Samy Bengio, Norman Hoon Thian Poh

A systematic analysis of user-dependent performance variability in the context of automatic speaker verification was first studied by Doddington \etal (1998). Different categories of users were distinguished and were called by animal names such as sheep, g ...

IDIAP2006

Can Chimeric Persons Be Used in Multimodal Biometric Authentication Experiments?

Samy Bengio, Norman Hoon Thian Poh

Combining multiple information sources, typically from several data streams is a very promising approach, both in experiments and to some extents in various real-life applications. A system that uses more than one behavioural and physiological characterist ...

IDIAP2005

Database, Protocol and Tools for Evaluating Score-Level Fusion Algorithms in Biometric Authentication

Samy Bengio, Norman Hoon Thian Poh

Fusing the scores of several biometric systems is a very promising approach to improve the overall system's accuracy. Despite many works in the literature, it is surprising that there is no coordinated effort in making a benchmark database available. It sh ...

2005

A Novel Approach to Combining Client-Dependent and Confidence Information in Multimodal Biometric

Samy Bengio, Norman Hoon Thian Poh

The issues of fusion with client-dependent and confidence information have been well studied separately in biometric authentication. In this study, we propose to take advantage of both sources of information in a discriminative framework. Initially, each s ...

2005

Database, Protocol and Tools for Evaluating Score-Level Fusion Algorithms in Biometric Authentication

Samy Bengio, Norman Hoon Thian Poh

2005

This study investigates a new client-dependent normalisation to improve biometric authentication systems. There exists many client-de-pendent score normalisation techniques applied to speaker authentication, such as Z-Norm, D-Norm and T-Norm. Such normalis ...

2005

Biometric authentication is a process of verifying an identity claim using a person's behavioural and physiological characteristics. Due to the vulnerability of the system to environmental noise and variation caused by the user, fusion of several biometric ...

IDIAP2005

2005

Improving Fusion with Margin-Derived Confidence In Biometric Authentication Tasks

Samy Bengio, Norman Hoon Thian Poh

This study investigates a new confidence criterion to improve fusion via a linear combination of scores of several biometric authentication systems. This confidence is based on the margin of making a decision, which answers the question, ``after observing ...

2005