Forecasting the outcome of Greek football games using mathematical models and power rankingsForecasting the outcome of Greek football games using mathematical models and power rankings Διπλωματική Εργασία Diploma Work 2014-10-032014elThe subject of this thesis is the prediction of the results of football matches and the estimation of the final points gathered by the teams at the end of the football year. In particular, we are interested in the prediction of the outcome of the Greek Superleague games for the season 2007-2008 to 2013-2014. For this purpose it was necessary to record the relevant data for all teams after each game (goal difference, current points, number of wins, number of draws, number of defeats, etc.). Then, using the data gathered and utilizing various techniques we try to predict the final outcome of the matches. Our first approach falls into the sport rating systems category, where we rank all the teams based on their power scores (power ranking procedure). Our second approach is based on clustering and is implemented using the k-means algorithm. In the third approach we use two independent Poisson distributions for describing the goals scored by the home and the away team, respectively. Moreover, we use two naive methods for extracting baseline results: in the first we assume that the home team is always the winner and in the second we assume that the last year's result will be repeated for all teams that compete in two consecutive years. Finally, we use the moving average, the weighted moving average and the exponentially weighted moving average to estimate the final points that each Superleague team will gather at the end of the football year. The results of our study are promising, demonstrating the usefulness of the proposed models and making the further study of this problem interesting for future improvements.http://creativecommons.org/licenses/by/4.0/Πολυτεχνείο Κρήτης::Σχολή Ηλεκτρονικών Μηχανικών και Μηχανικών ΥπολογιστώνPaliatsa_Dimitra_Dip_2014.pdfChania [Greece]Library of TUC2014-10-03application/pdf5.3 MBfree Paliatsa Dimitra Παλιατσα Δημητρα Koutsakis Polychronis Κουτσακης Πολυχρονης Paterakis Michalis Πατερακης Μιχαλης Deligiannakis Antonios Δεληγιαννακης Αντωνιος Technical University of Crete Πολυτεχνείο Κρήτης Forecasting the outcome of greek football games American football Foot-ball football american football foot ball Forecasting theory prediction theory forecasting theory