Machine Learning Dell Zhang Birkbeck University of London

Machine Learning Dell Zhang Birkbeck, University of London

Netflix Prize n $1, 000 ¨ to the first person to improve the accuracy of its recommendation system by 10 percent. n $50, 000 ¨ to the current leader each year for as long as the contest runs.

Concepts n Learning = ¨ improving performance ¨ at some task ¨ through experience Human / Machine Prof. Tom Mitchell

Concepts n n Machine Learning (ML) is a subfield of artificial intelligence concerned with algorithms that allow computers to learn. What this means, in most cases, is that algorithm is given a set of data and infers information about the properties of data – and that information allows it to make predictions about other data that might see in the future.

Concepts n n This is possible because almost all non-random data contains patterns, and these patterns allow the machine to generalize. In order to generalize, it trains a model with what it determines are the important aspects of the data. Many machine learning algorithms rely heavily on mathematics (in particular statistics).

Concepts n The Bean Machine ¨ Wikipedia n http: //en. wikipedia. org/wiki/Bean_machine ¨ Demonstration: n http: //www. youtube. com/watch? v=AUSKTk 9 ENzg ¨ Simulation: n http: //www. ms. uky. edu/~mai/java/stat/Galton. Machine. html

Concepts n Closely Related Areas ¨ Data Mining or KDD ¨ Pattern Recognition

References