[01] Raed S. K. Rasheed, Faculty of Information Technology, The Islamic University of Gaza, Gaza, Palestine.

Stock market is one of the most commonly investment environment used for investment in the world. In the last few years the number of individual investors increased rapidly, unfortunately most of them does not use the investment fundamentals. Although, the huge amount of historical data for stock markets, it is not easy to predict the stock behavior using traditional techniques if we considered the unusual factors such as political, economic and psychological impact factors especially in Egypt. In this study we use data mining techniques to detect stocks behavior within the weekdays using Ezz Steel Company as case study; we find a new knowledge of the relation between stocks prices and the weekdays.

Data Mining, Stock Data, Rule Induction

[01] K. Kannan, P. Sekar, M. Sathik and P. Arumugam, “Financial Stock Market Forecast using Data Mining Techniques”, Proceedings of the International Multi Conference of Engineers and Computer Scientists March, 2010, Hong Kong. [02] S. Sirikulvadhana, “Data Mining as A Financial Auditing Tool,” unpublished thesis (M.Sc) The Swedish School of Economics and Business Administration, 2002. [03] N. Chen., Wang W., Zhu D.D., “A study on stock data mining by map recognition”, Proceedings of the Second International Conference on Information Fusion. Part vol.2, 1999. [04] P. Bahrun and M. Taib, “Selected Malaysia Stock Predictions using Artificial Neural Network” 5th International Colloquium on Signal Processing & Its Applications 2009, Malaysia. [05] B. Yildiz, A. Yalama, and M. Coskun, "Forecasting the Istanbul Stock Exchange National 100 Index Using an Artificial Neural Network" presented at PWASET, 2008. [06] A. Hammad, S. Ali, and E. Hall, "Forecasting the Jordanian Stock Prices Using Artificial Neural Network," University of Cincinnati, Ohio 2007. [07] G. Dutta, P. Jha, A. K. Laha, and N. Mohan, "Artificial Neural Network Models for Forecasting Stock Price Index in Bombay Stock Exchange," Indian Institute of Management Ahmedabad, IIMA Working Papers, 2005. [08] Jerzy W. Grzymala-Busse, Witold J.Grzymala-Busse, Rule Induction, The Data Mining and Knowledge Discovery Handbook, ed. By Oded Maimon and LiorRokach, Springer-Verlag, 2005. [09] RapidMiner version 5.0 help. [10] Shaker, Mohamed Ahmed, and Khairy Elgiziry, Comparisons of asset pricing models in the Egyptian stock market. Accounting and Finance Research 3.4, 2014.