Ebrahim Ansari

a bit about me

I am assistant professor in Institute for Advanced Studies in Basic Sciences (IASBS).
I have more than 10 years' experience as a teacher who is very committed to motivating students through education especially in computer science.
I started programming with Commodore 64 when I was 10 (1991). My work in many projects both in academia and industry has resulted in substantial performance enhancement and reduced cost.

main interests

Natural Language Processing

Computer Security

Advanced Algorithms

High Performance Computation

Parallel Programming

Education

PhD, September 2014, Shiraz University, Computer Engineering (Software systems), Department of Computer Science and Engineering, Thesis title: "Extracting Bilingual Lexicon And Parallel Sentences From Comparable Corpora Using Statistical Machine Translation", Supervised by Prof. M. H. Sadreddini

Sabbatical, September 2012 - April 2013, University of Pisa, Dipartimento di Informatica, Working on Istella web crawler, Supervised by Prof. Giuseppe Attardi

MS, September 2008, Shiraz University, Computer Engineering (Software systems), Department of Computer Science and Engineering, Thesis title: "Association Rule Mining in Distributed Systems", Supervised by Prof. M. H. Sadreddini and Prof. Gh Dastghaibifard

BS, July 2005, Yazd University, Computer Science (Computational Systems), Department of Mathematics

High School, July 2001, Shahid Beheshti, Mathematics (Mathematics and Physics), Ahwaz, Iran

Gallery

"Ebrahim, the Marco polo" is my tag among friends and colleagues while I've used any opportunity to travel around the world

Employment

Assistant Professor (09/2014-Present)
Department of Computer Science and Information Technology Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan, Iran
Responsibilities:
- Teach graduate classes
  - Parallel Programming
  - Information Retrieval
  - Natural Language Processing
  - Network Security
  - Theory of Computer Science
  - Advanced Algorithms (Co-Teaching with Dr. Mansour Davoudi Monfared)
  - Advanced AI (Co-Teaching with Dr. Parvin Razzaghi)
  - Computational Complexity
- Teach undergraduate classes
  - Programming I
  - Programming II
  - Programming III
- Manager of Information Technology Center (11/2015-Present)
- Research and publication in computer security and natural language processing
- Direct Master's and undergraduate student research projects
- Cordinator of AI and Computer Security lab
- To hold internal ACM programming contest
Lecturer (winter semesters, 2013-Present)
Department of E-Learning Shiraz University Shiraz, Iran
Responsibilities:
- Teach graduate classes
  - User Interface Design
Lecturer (02/2011-06/2015)
Department of Computer Engineering, Science and Research University, BandarAbbas, Iran
Responsibilities:
- Teach graduate classes
  - Parallel Programming
  - Advanced Architecture
  - Evolutionary Algorithms
  - Advanced OS
  - Natural Language Processing (NLP)
  - Distributed Systems
- Direct Master's and undergraduate student research projects
Referee in Chief (08/2015-Present)
Zanjan Science and Technology Park Zanjan, Iran
Responsibilities
- To evaluate projects submitted to park to design evaluation process there
Chair [of Board] (11/2014-Present)
Rayan Parto Caspian
Tehran, Iran
Responsibilities
- To evaluate projects submitted to park to design evaluation process there

Publications

An Advanced Profile Hidden Markov Model for Malware Detection, Alireza Abbas Alipour, Ebrahim Ansari, Intelligent Data Analysis, 24(4), June 2020
Building a Morphological Network for Persian on Top of a Morpheme-Segmented Lexicon, Hamid Haghdoost, Ebrahim Ansari, and Zdeněk Žabokrtský, to be published at Derimo2019 proceeding, 2019
Extracting Bilingual Persian Italian Lexicon from Comparable Corpora Using Different Seed Dictionaries, Ebrahim Ansari, M.H. Sadreddini, Mahsa Radinmehr, and Ziba Khosravan, BUCC 2019, Varna, Bulgaria, 2019
Supervised Morphological Segmentation using Rich Segmented Lexicon, Ebrahim Ansari, Zdeněk Žabokrtský, Mohammad Mahmoudi, Hamid Haghdoost, and Jonas Vidra, To be published at RANLP2019 proceeding, Varna, Bulgaria, 2019
Supervised Word Sense Disambiguation Using New Features Based on Word Embeddings, Majid Sadi Fahandezi, Ebrahim Ansari, Mohsen Afsharchi, Journal of Intelligent & Fuzzy Systems, 2019
Static Signature-Based Malware Detection using Opcode and Binary Information, A. Jalilian, Z. Narimani and E. Ansari, CiDaS19, March 2019, Zanjan, Iran, 2019
JSSignature: Eliminating Third-Party-Hosted JavaScript Infection Threats Using Digital Signatures, K. Nakhaei, E. Ansari and F. Ansari, SN Applied Sciences, Springer, 2019
An Intelligent Safety System for Human-Centered Semi-Autonomous Vehicles, H.A. Khojasteh, A. A. Alipour, E. Ansari and P. Razzaghi, CiDaS19, March 2019, Zanjan, Iran, 2019
OOPAP and OPVD: Two Innovative Improvements for Hiding Secret Data into Images, Ebrahim Ansari, Morteza Keshtkaran, Richard Wallace, S. M. H. Mirsadeghi and Fateme Ansari, Iranian Journal of Science and Technology, Transactions of Electrical Engineering, Springer, 43 (1), 2018
Network-Based Identification of Different Mechanisms Underlying Pathogenesis of HPV-Active and HPV-Negative Oropharyngeal Squamous Cell Carcinoma, Maryam Iman, Iman Hamraz, Zahra Narimani, Ebrahim Ansari, Journal of the Chinese Chemical Society 65 (11), 1307-1316, 2018
TFI-Apriori: Using New Encoding to Optimize the Apriori Algorithm, with MH. Sadreddini, S. M. H. Mirsadeghi, Morteza Keshtkaran and Richard Wallace, Intelligent Data Analysis, June 2018
Extracting an English-Persian Parallel Corpus from Comparable Corpora, with Akbar Karimi, Bahram Sadeghi Bigham, ”LREC 2018”
Extracting Bilingual Persian Italian Lexicon from Comparable Corpora Using Different Types of Seed Dictionaries, with M. H. Sadreddini, Lucio Geandinetti and Mehdi Sheikhalishahi, ”Applications of Comparable Corpora”, Berlin: Language Science Press, available in arXiv, 2017
Using English as Pivot to Extract Persian-Italian Parallel Sentences from Non-Parallel Corpora, with M.H. Sadreddini, Mostafa Sheikhalishahi, Richard Wallaced and Fatemeh AliMardani, ”Applications of Comparable Corpora”, Berlin: Language Science Press, available in arXiv, 2016
TFI-Apriori: A New Optimization for Apriori Algorithm, with MH. Sadreddini, Gh. Dastgheibifard, Morteza Keshtkaran, Fateme Alimardani, "Intelligent Data Analysis", June 2018
Extracting Persian-English Parallel Sentences from Document Level Aligned Comparable Corpus using Bi-Directional Translation, with M.H. Sadreddini, Alireza Tabebordbar, and Richard Wallace, ACSIJ, 2014
Combining Different Seed Dictionaries to Extract Lexicon from Comparable Corpus, with M.H. Sadreddini, Alireza Tabebordbar, and Mehdi Sheikhalishahi, INDJST, 2014
A Novel Cooperative-Tabu Search Feature Reduction Approach, with M.H. Sadreddini, B. Sadeghi Bigham, and F. Alimardani, Scientia Iranica, 2013
A Novel Cooperative-Tabu Search (CTS) Feature Reduction Approach to Increase Classification Rate, with M.H. Sadreddini, and B. Sadeghi Bigham, CICIS11, 2011
Mining Frequent Itemsets In Distributed Environment Using Trie Data Structure, with G.H. Dastghaibifard, M.H. Sadreddini , M. Keshtkaran, and H. Kaabi, [Trends in Communication Technologies and Engineering Science], Chapter 22, Edited book on IMECS 2008, Published by Springer, 2009
Feature Selection SDA method in Ensemble Nearest Neighbor classifier, with F. Alimardani , and R. Boostani, Proc. of Springer, 13th Int. Conf. of Computer Science & Engineering, Kish, Iran, March, 9-11 2008, P. 884-887, 2008
Distributed Frequent Itemset Mining using Trie Data Structure, with G.H. Dastghaibifard, M. Keshtkaran, and H. Kaabi, IAENG International Journal of Computer Science, Volume 35 Issue 3, Pages 377-381, 2008
A Parallel Branch and Bound Algorithm for Vehicle Routing Problem, with H. Dastghaibifard, S.M. Sheykhalishahi, A. Bavandpouri, and E. Ashoor, IMECS 2008, Hong Kong, 2008
Distributed Trie-based Frequent Itemset Mining, with G.H. Dastghaibifard, and M. Keshtkaran, IMECS 2008, Hong Kong, 2008
Effect of Candidate Hashing and Transaction Trimming in Distributed Mining of Association Rules, with Hadi Sadreddini, and Mahmoud Deypir, IDMC 07, Iran, 2007

Under Review Papers

Unsupervised Word Sense Disambiguation using Word Embeddings, Behzad Moradi, Ebrahim Ansari and Zdeněk Žabokrtský, Konvens2019, 2019
DeepTwitter: Deep Multimodal Image-Text Embeddings for Automatic Cross-Media Retrieval on Twitter, Hadi Abdi Khojasteh, Ebrahim Ansari, Parvin Razzaghi, and Akbar Karimi, EMNLP2019, 2019
Improving Word Representations by Introducing Atomic Subwords in fastText, Ebrahim Ansari, Zdeněk Žabokrtský, Mohammad Mahmoudi, EMNLP2019, 2019

Students

Master's
1. Mohammadreza Fallahi
2. Ali Moghadam
3. Soheila Behrouznia
4. Mahkameh Salehi
5. Mohammad Mahmoudi, Fake News Detection on Twitter Data, in preparation.
6. Niloofar Fayyazi, Sentiment Analysis on Twitter Data Using Deep Neural Networks, in preparation.
7. Hamid Haghdoost, Morphological Segmentation using Unsupervised Multilingual Learning, in preparation.
8. Mahsa Ra`dinmehr, Visual Question Answering using Neural Networks, Summer 2019
9. Ziba Khosravan, Sentiment Analysis on Twitter Data Using Neural Networks, Summer 2019
10. Hadi Abdi Khojasteh, Image Captioning using Neural Networks, Summer 2019. Also the first author of FARAZ project: An Intelligent Safety System for Human-Centered Semi-Autonomous Vehicles
11. Fateme Ansari, Fault Localization in Firewall Rules , Summer 2019
12. Majid Fahandezi Saadi, Word Sense Disambiguation Using Vector Space Models, Spring 2018
13. Azadeh Deljavan Anvari, Word Sense Disambiguation Using Graph-Based Methodes, Summer 2018
14. Behzad Moradi, Unsupervised Word Sense Disambiguation for Persain Words using Comparable Corpora, Summer 2017
15. Azadeh Jalilian, Malware Detection using Static Signature-Based Techniques, Summer 2017
16. Alireza Abbas Alipour, Static Malware Detection Using a Behavior-Based Approach, Summer 2017. Also the co-author of FARAZ project: An Intelligent Safety System for Human-Centered Semi-Autonomous Vehicles
17. Akbar Karimi, Parallel Sentence Extraction from Comparable Corpora Using Statistical Machine Translation, Summer 2017
18. Sina Amirshrkari, Code Protection in Android Using Obfuscation, Cryptography and Dynamic Execution, Summer 2015
19. Mehdi Mohammadian, Extracting Industrial Bilingual Persian-English Lexicon from Comparable Corpora using Industrial Parallel Corpora, Winter 2016
20. S. Hadi Mousavi, Word Sense Disambiguation Using Monolingual Corpora, Bilingual And Ontology Dictionaries, Winter 2016
21. Kousha Nakhayi, Eliminating Third-Party-Hosted JavaScript Infection Threats Using Digital Signatures, in preparation.
22. Masoume Alimardani, Designing a Tool to Find Vague Words in Persian-English Dictionary, Winter 2013 (Literature Department).
Undergraduate
1. Alireza Abdi, Summer 2019
2. Abbas Moharrami, Summer 2019
3. Aidin Mohandesi, Summer 2019
4. Aysan Chehreh, Summer 2019
5. Zohreh Kazemi, Summer 2019
6. Farzaneh Mirzakhanlou, Summer 2018
7. Ali Moghaddam, Summer 2017
8. Hadi Abdi Khojasteh, Summer 2016
9. Mahsa Mohammadi, Summer 2016
10. Hadi Mirsadeghi, Spring 2015
11. Amir Eskandari, Winter 2011.
12. Behnoush Barahimzadeh, Spring 2010.