2015 09 18

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Politecnico di Milano Facoltà di Ingegneria dell’Informazione Data Mining and Text Mining Tecniche di Apprendimento Automatico Prof. Pier Luca Lanzi & Ing. Daniele Loiacono September 18, 2015 NAME MATRICOLA Solve the following problems and write the answer inside the problem box. Answers must be clearly written. Pencils are not allowed. The midterm consists of 3 sheets of paper. It must be returned with all the 3 sheets. No any other sheet can be added. No sheet can be removed. This is a closed-book, closed-notes exam. Only non-programmable calculators are allowed. Notes/books/mobile phones are not allowed. If you are caught using forbidden material, the exam will immediately end and an RP grade will be recorded; then, your Data Mining exam will consist of an oral examination from then on. All the answers must be adequately motivated. Grades The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again. Problem 1. Apply Chernoff approach to visualize the following data. Adequately comment the answer and the process used. Id Outlook Temp Humidity Windy Play 1 Sunny Hot High False No 2 Sunny Hot High True No 3 Overcast Hot High False Yes 4 Rainy Mild High False Yes 5 Rainy Cool Normal False Yes 6 Rainy Cool Normal True No 7 Overcast Cool Normal True Yes 8 Sunny Mild High False No 9 Sunny Cool Normal False Yes 10 Rainy Mild Normal False Yes 11 Sunny Mild Normal True Yes 12 Overcast Mild High True Yes 13 Overcast Hot Normal False Yes 14 Rainy Mild High True No Problem 1. (continued) Problem 2. Consider a graph G consisting of six nodes (A, B, C, D, E, and F) with the…