... to-specific (top-down) (CN2, FOIL) Specific-to-general (bottom-up) ... Rule in FOIL ... Foil Gain Metric. Want to achieve two goals. Decrease coverage of ...
1. CS 391L: Machine Learning. Text Categorization. Raymond J. Mooney. University of Texas at Austin ... lottery. win. Friday. exam. computer. May. PM. test ...
... complex functions, like sine waves in Fourier analysis. ... Handwriting recognition. 39. Issues in Neural Nets. More efficient training methods: Quickprop ...
All probabilities between 0 and 1. True proposition has ... P(true) = 1 P(false) = 0. The probability of disjunction is: A. B. 3. Conditional Probability ...
Many jokes rely on the ... instance of 'line' labeled with one of 6 senses ... people fighting for a place in line have no trouble filling in the blanks. ...
A hypothesis space is said to shatter a set of instances iff for every partition ... No five instances can be shattered since there can be at most 4 distinct extreme ...
Unlike other learning algorithms, does not involve construction of an explicit ... To compensate for difference in units across features, scale all continuous ...
If-then rules in logic are a standard representation of knowledge that have ... Rules are post-pruned by greedily removing antecedents or rules until ...
Nodes test features, there is one branch for each value of the feature, and ... Performs hill-climbing (greedy search) that may only find a locally-optimal solution. ...
CS 391L: Machine Learning Neural Networks Raymond J. Mooney University of Texas at Austin Neural Networks Analogy to biological neural systems, the most robust ...
... Boosting provides a larger increase in accuracy than Bagging. ... Bagging more consistently provides a modest improvement. ... Combining Boosting and Bagging. ...
If Y and all Xi and binary, this requires specifying only 2n parameters: ... During testing, estimate P(Xi | Y=yk) for a given example, using the Gaussian ...
CS 391L: Machine Learning Introduction Raymond J. Mooney University of Texas at Austin What is Learning? Herbert Simon: Learning is any process by which a system ...
... binary function C={0,1} ({true,false}, {positive, negative}) then it is called a ... An instance, x X, is said to satisfy an hypothesis, h, iff h(x)=1 (positive) ...
Permanently prune the node that results in the greatest increase in accuracy on ... the pruned tree learned in each trial. Let C be the average pruned-tree ...
Comparing Two ... Only compares two specific hypotheses regardless of the methods used to ... Comparing the average accuracy of hypotheses produced by two ...