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Your search keyword '"Omar, Yasser M."' showing total 26 results
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26 results on '"Omar, Yasser M."'

1. An Innovative Word Encoding Method For Text Classification Using Convolutional Neural Network

Author

Helmy, Amr Adel, Omar, Yasser M. K., and Hodhod, Rania

Subjects
Computer Science - Computation and Language, Computer Science - Machine Learning
Abstract

Text classification plays a vital role today especially with the intensive use of social networking media. Recently, different architectures of convolutional neural networks have been used for text classification in which one-hot vector, and word embedding methods are commonly used. This paper presents a new language independent word encoding method for text classification. The proposed model converts raw text data to low-level feature dimension with minimal or no preprocessing steps by using a new approach called binary unique number of word "BUNOW". BUNOW allows each unique word to have an integer ID in a dictionary that is represented as a k-dimensional vector of its binary equivalent. The output vector of this encoding is fed into a convolutional neural network (CNN) model for classification. Moreover, the proposed model reduces the neural network parameters, allows faster computation with few network layers, where a word is atomic representation the document as in word level, and decrease memory consumption for character level representation. The provided CNN model is able to work with other languages or multi-lingual text without the need for any changes in the encoding method. The model outperforms the character level and very deep character level CNNs models in terms of accuracy, network parameters, and memory consumption; the results show total classification accuracy 91.99% and error 8.01% using AG's News dataset compared to the state of art methods that have total classification accuracy 91.45% and error 8.55%, in addition to the reduction in input feature vector and neural network parameters by 62% and 34%, respectively., Comment: Accepted @ 14th International Computer Engineering Conference (ICENCO2018), Faculty of Engineering , Cairo University, Egypt, Dec. 29-30, 2018

Published
2019
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3. Machine Learning Approaches for Human Activity Recognition Based on Multimodal Body Sensors

Author

Gamal, Ghada, Omar, Yasser M. K., Maghraby, Fahima A., Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Abraham, Ajith, editor, Piuri, Vincenzo, editor, Gandhi, Niketa, editor, Siarry, Patrick, editor, Kaklauskas, Arturas, editor, and Madureira, Ana, editor

Published
2021
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4. Solvent-Free 'N'-Formylation: An Experimental Application of Basic Concepts and Techniques of Organic Chemistry

Author

Omar, Yasser M., Mohamed, Noha G., Boshra, Andrew N., and Abdel-Aal, Abu-Baker M.

Abstract

"N"-Formamides are important intermediates in the synthesis of many pharmacologically active compounds and are used as protecting groups for amines or as catalysts in different reactions. The current "N"-formylation experiment is designed as a part of an introductory organic chemistry course for undergraduate students. The experiment includes formylation of substituted aromatic amines using formic acid under solvent-free conditions. Students are introduced to laboratory safety precautions, reaction mechanism, and basic laboratory techniques such as a solvent-free reaction setup, reflux, filtration, melting point determination, yield calculation, and lab report write-up. Students synthesized four different formamides in 50-80% yield as a straightforward application of nucleophilic substitution reactions.

Published
2020
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5. Mobile Intelligent Interruption Management: A New Context-Aware Fuzzy Mining Approach

Author

Darwish, Saad M., El-Toukhy, Ahmed E., Omar, Yasser M., Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Hassanien, Aboul Ella, editor, Shaalan, Khaled, editor, and Tolba, Mohamed Fahmy, editor

Published
2020
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6. Predicting Drug Target Interaction by Integrating Drug Fingerprint and Drug Side Effect Using Machine Learning

Author

Saad, Abdelrahman, Maghraby, Fahima A., Omar, Yasser M., Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Hassanien, Aboul Ella, editor, Azar, Ahmad Taher, editor, Gaber, Tarek, editor, Bhatnagar, Roheet, editor, and F. Tolba, Mohamed, editor

Published
2020
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15. tert -Butyl(2-oxo-2 H -pyran-5-yl)carbamate as the First Chameleon Diene Bearing an Electron-Donating Substituent.

Author

Omar, Yasser M., Santucci, Giulia, and Afarinkia, Kamyar

Subjects
*CHAMELEONS, *RING formation (Chemistry), *ALKENES, *DIENOPHILES, *DIELS-Alder reaction
Abstract

The 2(H)-pyran-2-one bearing electron-donating tert-butylcarbamate (BocNH-) group at the 5- position is a "chameleon" diene and undergoes efficient Diels–Alder cycloadditions with alkene dienophiles with both electron-rich and electron-deficient substituents. Cycloadditions afford the 5-substituted bicyclic lactone cycloadducts regardless of the electronic nature of the dienophile. However, cycloadditions with electronically matched electron-deficient dienophiles proceed faster than those with electronically mismatched electron-rich dienophiles. [ABSTRACT FROM AUTHOR]

Published
2022
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