Hala H. Zayed

Work place: Benha University, Faculty of Computers and Artificial intelligence, Computer Science Department, Benha, 13518, Egypt

E-mail: Hala.zayed@fci.bu.edu.eg


Research Interests: Image Processing, Machine Learning, Computer Vision, Biometrics


Hala H. Zayed received the B.Sc. in electrical engineering (with honor degree) in 1985, the M.Sc. in 1989, and Ph.D. in 1995 from Benha University in electronics engineering. She is now a professor at the faculty of Computers and Artificial intelligence, Benha University. Her areas of research are computer vision, biometrics, machine learning, and image processing.

Author Articles
Credibility Detection on Twitter News Using Machine Learning Approach

By Marina Azer Mohamed Taha Hala H. Zayed Mahmoud Gadallah

DOI: https://doi.org/10.5815/ijisa.2021.03.01, Pub. Date: 8 Jun. 2021

Social media presence is a crucial portion of our life. It is considered one of the most important sources of information than traditional sources. Twitter has become one of the prevalent social sites for exchanging viewpoints and feelings. This work proposes a supervised machine learning system for discovering false news. One of the credibility detection problems is finding new features that are most predictive to better performance classifiers. Both features depending on new content, and features based on the user are used. The features' importance is examined, and their impact on the performance. The reasons for choosing the final feature set using the k-best method are explained. Seven supervised machine learning classifiers are used. They are Naïve Bayes (NB), Support vector machine (SVM), K-nearest neighbors (KNN), Logistic Regression (LR), Random Forest (RF), Maximum entropy (ME), and conditional random forest (CRF). Training and testing models were conducted using the Pheme dataset. The feature's analysis is introduced and compared to the features depending on the content, as the decisive factors in determining the validity. Random forest shows the highest performance while using user-based features only and using a mixture of both types of features; features depending on content and the features based on the user, accuracy (82.2 %) in using user-based features only. We achieved the highest results by using both types of features, utilizing random forest classifier accuracy(83.4%). In contrast, logistic regression was the best as to using features that are based on contents. Performance is measured by different measurements accuracy, precision, recall, and F1_score. We compared our feature set with other studies' features and the impact of our new features. We found that our conclusions exhibit high enhancement concerning discovering and verifying the false news regarding the discovery and verification of false news, comparing it to the current results of how it is developed.

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A Passive Approach for Detecting Image Splicing using Deep Learning and Haar Wavelet Transform

By Eman I. Abd El-Latif Ahmed Taha Hala H. Zayed

DOI: https://doi.org/10.5815/ijcnis.2019.05.04, Pub. Date: 8 May 2019

Passive image forgery detection has attracted many researchers in the recent years. Image manipulation becomes easier than before because of the fast development of digital image editing software. Image splicing is one of the most widespread methods for tampering images. Research on detection of image splicing still carries great challenges. In this paper, an algorithm based on deep learning approach and wavelet transform is proposed to detect the spliced image. In the deep learning approach, Convolution Neural Network (CNN) is employed to automatically extract features from the spliced image. CNN is applied and then Haar Wavelet Transform (HWT) is used. Support Vector Machine (SVM) is used later for classification. Additional experiments are performed. That is, Discrete Cosine Transform (DCT) replaces HWT and then Principle Component Analysis (PCA) is applied. The proposed algorithm is evaluated on a publicly available image splicing datasets (CASIA v1.0 and CASIA v2.0). It achieves high accuracy while using a relatively low dimension feature vector. Our results demonstrate that the proposed algorithm is effective and accomplishes better performance for detecting the spliced image.

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