Search Results for author: Chun Yong Chong

Found 8 papers, 2 papers with code

Robustness Evaluation in Hand Pose Estimation Models using Metamorphic Testing

1 code implementation8 Mar 2023 Muxin Pu, Chun Yong Chong, Mei Kuan Lim

We found that on average more than 80\% of the hands could not be identified by BodyHands, and at least 50\% of hands could not be identified by MediaPipe hands when diagonal motion blur is introduced, while an average of more than 50\% of strongly underexposed hands could not be correctly estimated by NSRM hand.

Hand Pose Estimation

ASDF: A Differential Testing Framework for Automatic Speech Recognition Systems

1 code implementation11 Feb 2023 Daniel Hao Xian Yuen, Andrew Yong Chen Pang, Zhou Yang, Chun Yong Chong, Mei Kuan Lim, David Lo

To address these limitations, our tool incorporates two novel features: (1) a text transformation module to boost the number of generated test cases and uncover more errors in ASR systems and (2) a phonetic analysis module to identify on which phonemes the ASR system tend to produce errors.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +1

SERCNN: Stacked Embedding Recurrent Convolutional Neural Network in Detecting Depression on Twitter

no code implementations29 Jul 2022 Heng Ee Tay, Mei Kuan Lim, Chun Yong Chong

Our findings open up a promising direction for detecting depression on social media with a smaller number of posts for inference, towards creating solutions for a cost-effective and timely intervention.

Depression Detection

Metamorphic Testing-based Adversarial Attack to Fool Deepfake Detectors

no code implementations19 Apr 2022 Nyee Thoang Lim, Meng Yi Kuan, Muxin Pu, Mei Kuan Lim, Chun Yong Chong

We performed our evaluations on MesoInception-4 and TwoStreamNet models, which are the state-of-the-art deepfake detection models.

Adversarial Attack DeepFake Detection +1

Fairness Evaluation in Deepfake Detection Models using Metamorphic Testing

no code implementations14 Mar 2022 Muxin Pu, Meng Yi Kuan, Nyee Thoang Lim, Chun Yong Chong, Mei Kuan Lim

Metamorphic relations are derived based on the notion that realistic perturbations of the input images, such as makeup, involving eyeliners, eyeshadows, blushes, and lipsticks (which are common cosmetic appearance) applied to male and female images, should not alter the output of the model by a huge margin.

DeepFake Detection Face Swapping +1

SERCNN: Stacked Embedding Recurrent Convolutional Neural Network in Depression Detection on Twitter

no code implementations29 Sep 2021 Heng Ee Tay, Mei Kuan Lim, Chun Yong Chong

Therefore, this study proposes a Stacked Embedding Recurrent Convolutional Neural Network (SERCNN) for a more optimized prediction that has a better trade-off between the number of posts and accuracy.

Depression Detection

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