Knowledge Discovery KDD Process This is a view

Knowledge Discovery (KDD) Process • This is a view from typical database systems and data warehousing Pattern Evaluation communities • Data mining plays an essential role in the knowledge discovery process Data Mining Task-relevant Data Warehouse Data Cleaning Data Integration 3 Databases Selection

Data Mining in Business Intelligence Increasing potential to support business decisions Decision Making Data Presentation Visualization Techniques End User Business Analyst Data Mining Information Discovery Data Analyst Data Exploration Statistical Summary, Querying, and Reporting Data Preprocessing/Integration, Data Warehouses Data Sources Paper, Files, Web documents, Scientific experiments, Database Systems 4 DBA

האלגוריתמים של כריית מידע • Classification – – קלסיפיקציה C 4. 5 • Regression - – רגרסיה polynomial, logistic, SVM • Clustering – – מיקבוץ k-NN, k-means • Co-occurrence – collaborative filtering • Information Retrieval – Page. Rank • Probabilistic models – Bayes, Naïve Bayes

שיטות למידה - Supervised Decision Trees – finding cancer

שיטות למידה - Unsupervised Clustering (k=11)