Errata if you purchased between July 12, 2019
and August 5, 2019:
Page 21; Exercise 1.12: Replace 12% by 12.5% (This was kindly pointed out by Emilio Barone)
Page 27: Figure 2.2: Change “country” to “observation” in second box. (This was kindly pointed out by Raymond Kan)
Page 41: 10-11 lines from end: replace “five” by “four” in two places (This was kindly pointed out by Emilio Barone)
Page 47: Exercise 2.13b: line 1: insert “for k=3” after “all four features”. Change “index” to “cluster:” on lines 4 and 5
Page 45: 9 lines from end. Replace “other other” by “or other”
Page 57: Equation 3.4: change 13,5402.7 to 135,402.7X2.
Page 52: Line 14: Replace bi by bj (This was kindly pointed out by Emilio Barone)
Page 64: Figure 3.7: Caption: Change “l2 = 10.0” to “l2=1.0”
Page 70: Last equation: final term should be bmXm, not Xm (This was kindly pointed out by Emilio Barone)
Page 75: line 2: Replace “training set” with “test set” (This was kindly pointed out by Emilio Barone)
Page 79: First line: Replace subscipt i by subscript j in two places. (This was kindly pointed out by Emilio Barone)
Page 88: First equation: Insert ] after (0.1556). (This was kindly pointed out by Emilio Barone)
Page 92: Figure 4.3: Caption: Change “true rate” to “true positive rate.” Also four lines from the end change “Figure 4.4” to “Figure 4.2.”
Page 95: six lines from end: replace 698.18 by 696.19 and 31.28 by 31.29 (This was kindly pointed out by Emilio Barone)
Page 96: 10 lines from end: replace “unconditional” by “conditional” (This was kindly pointed out by Emilio Barone)
Page 99: Figure 4.4: replace $353,593 by $353,573 (This was kindly pointed out by Emilio Barone)
Page 100: Numbers in the final column of Table 4.11 should be: 89,025, 69,445, 49,086, and 32,364.
Page 112: Third equation: Replace zj by zi. (This was kindly pointed out by Emilio Barone)
Page 112: footnote 2: Replace 
by 
(This was kindly pointed out by Emilio
Barone)
Page 113: Line 3: change “Section 3.9” to “section 3.11”.
Page 113: Table 5.2 mistakenly calculates loans misclassified using the edges of the path rather than the middle. When the middle of the path is used it is always the case that 0% are misclassified. This example will be changed for future printings. (I am grateful to Raymond Kan for pointing this out)
Page 117: second line above the figure: “C=0.1” should be “C=0.01”
Page 117: Third line: Replace wi by wj (This was kindly pointed out by Emilio Barone)
Page 128: equation (6.2): insert a minus sign in front of the expression. Also the expression for the gradient in the final line of footnote 3 should be (E+−E-)/0.02 (This was kindly pointed out by Emilio Barone)
Page 129: Three lines from end: Change “Tables 5.3 and 5.4” to “Tables 6.3 and 6.4”.
Page 132: Caption for figure should read: Situation where there is a local minimum at B
Page 141: equation for 
Replace j=1 by i=1. Also it should have a minus
sign in front of right hand side (This was kindly pointed out by Emilio
Barone)
Page 145: In the equation above equation (7.1) replace 
by 
.
In the equation above that replace 
by 
Page 152: In equation for Q(8,1) replace 0.0025 by ─0.0025. (This was kindly pointed out by Jacky Chen).
Page 154: Six lines from end: Replace “Table 7.8” by “Table 7.7”. (This was kindly pointed out by Emilio Barone)
Page 160: In Exercise 7.10 add “for the
multi-armed bandit problem” after hyperlink.
Page 180: Replace 
by 
in each of the two equations. (This was
kindly pointed out by Emilio Barone)
Page 172: Answer to 1.11: the standard deviation of the errors for the training set are correct, but those for the test set are wrong. They should be 35,588 for the polynomial of degree 3 model and 37,427 for the polynomial of degree four model. (This was kindly pointed out by Silvio Bencini
Page 181: The table for Problem 5.11 mistakenly calculates loans misclassified using the edges of the path rather than the middle. When the middle of the path is used, the loans misclassified for values of C equal to 0.01, 0.002, 0.001, 0.0005, 0.0003, 0.0002, and 0.0001 are 20%,20%, 20%, 20%, 30%, 40%, 40%, respectively.
Page 183: In answer to 7.5 change the
three sentences “After 1000 games……its Q-value has increased “
to “After 1000 and 25,000 games this has been identified as the best
strategy, but not convincingly so.”