TITLE: Machine Learning-based Lie Detector applied to a Novel Annotated Game Dataset 

ABSTRACT: Lie detection is considered a concern for everyone in their day to day life
given its impact on human interactions. Thus, people normally pay attention to
both what their interlocutors are saying and also to their visual appearances,
including faces, to try to find any signs that indicate whether the person is
telling the truth or not. While automatic lie detection may help us to
understand this lying characteristics, current systems are still fairly
limited, partly due to lack of adequate datasets to evaluate their performance
in realistic scenarios. In this work, we have collected an annotated dataset of
facial images, comprising both 2D and 3D information of several participants
during a card game that encourages players to lie. Using our collected dataset,
We evaluated several types of machine learning-based lie detectors in terms of
their generalization, person-specific and cross-domain experiments. Our results
show that models based on deep learning achieve the best accuracy, reaching up
to 57\% for the generalization task and 63\% when dealing with a single
participant. Finally, we also highlight the limitation of the deep learning
based lie detector when dealing with cross-domain lie detection tasks.
Lie detection is considered a concern for everyone in their day to day life
given its impact on human interactions. Thus, people normally pay attention to
both what their interlocutors are saying and also to their visual appearances,
including faces, to try to find any signs that indicate whether the person is
telling the truth or not. While automatic lie detection may help us to
understand this lying characteristics, current systems are still fairly
limited, partly due to lack of adequate datasets to evaluate their performance
in realistic scenarios. In this work, we have collected an annotated dataset of
facial images, comprising both 2D and 3D information of several participants
during a card game that encourages players to lie. Using our collected dataset,
We evaluated several types of machine learning-based lie detectors in terms of
their generalization, person-specific and cross-domain experiments. Our results
show that models based on deep learning achieve the best accuracy, reaching up
to 57\% for the generalization task and 63\% when dealing with a single
participant. Finally, we also highlight the limitation of the deep learning
based lie detector when dealing with cross-domain lie detection tasks.
Machine Learning-based Lie Detector applied to a Novel Annotated Game Dataset
http://arxiv.org/abs/2104.12345v2