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Errata (Typographical and other errors in AIMA)

Report New Errata

If you spot a typo, bug, or other error, please report it here. Thanks! But first, check below to see if it has already been reported.

Previously Reported Errata

This is a list of typos and other errors in the book, arranged by chapter and page number. The notation " Line: +2" means the second line, and " Line: -4" means the fourth line from the bottom. Most of the 43 known problems are minor typos, such as printing "the the" when we meant "the". But 3 of them are more serious errors which could cause misunderstanding. They are marked with bold red page numbers followed by (BUG).

SectionPreface Page: xi Line: 9, -2
Was
Should beAdd Alessandro Tommasi and Cesare Zavattari to list of acknowlegments.


Section1.1 Page: 2 Line: +2 First reported by: Tim Farley
WasThe various group
Should beThe various groups


Section1.2 Page: 5 Line: -8
WasRamon Lull
Should beRamon Llull


Section1.2 Page: 10 Line: -1
Wassytem
Should besystem


Section1.2.7 Page: 15 Line: -10 First reported by: Juan Leon
Wasthe these perceived limitations.
Should bethese perceived limitations.


SectionExercise 1.15 Page: 33 Line: +7 First reported by: Binil Thomas
Wastoe state of the art
Should bethe state of the art


Section2.4.3 Page: 52 Line: 3 First reported by: Robert Boyer
Wasseem to
Should beseem to be


Section3 Page: 64 Line: +11 First reported by: Juan R Leon
Wasgive several examples
Should begives several examples


Section3.1.1 Page: 67 Line: -1 First reported by: Michael Goldwasser
Wassome author use
Should besome authors use


Section3.5.2 Page: 98 Line: +16 First reported by: Duncan Smith
Wasthe the
Should bethe


Section4.4 Page: 145 Line: -1 First reported by: Peter Stone
WasThe the
Should beThe


Section4.4 Page: 146 Line: +3 First reported by: Peter Stone
WasNWS
Should beNSW


Section5.4.3 (Figure 5.9) Page: 175 Line: +1 First reported by: Robert Boyer
Waslabels 1 to 8
Should belabels 8 to 1


Section5.7 Page: 187 Line: -9 First reported by: Ronnie W. Smith
Was(Gordon, 1994)
Should be(Gordon, 1994b)
NoteNew reference: Gordon, S. A. (1994b). A Faster Scrabble Move Generation Algorithm, Software Practice and Experience, 24(2), 219-232.


SectionExercise 5.7 Page: 197 Line: +2 First reported by: Dustin Ho
Wasbe never be lower
Should benever be lower


SectionExercise 5.14 Page: 199 (BUG) Line: +1 First reported by: Nick Hay
WasO(2m/2)
Should beO(bm/2)


Section6.1.2 Page: 205 Line: +16
WasAxleF and AxleF
Should beAxleF and AxleB


Section6.1.3 Page: 207 (BUG) Line: 1/5/2010 First reported by: Dylan Shell
Wasconstraint <(X,Y), R1>, where {X, Y} are the shared variables and R1 is a new relation that defines the constraint between the shared variables
Should beconstraint <(C1, C2), R1>, where R1 is a new relation that defines the constraint between C1 and C2 on the basis of the shared variables {X, Y, Z}


SectionExercise 8.11 Page: 317 Line: +1 First reported by: Stuart Russell
Wassenntences
Should besentences


Section10.2.3 Page: 376 Line: 16 First reported by: Armin Galliker
Wasit it
Should beit


Section10.4 Page: 387 Line: -3 First reported by: Stuart Russell
Was¬ F
Should be¬ F0


Section11 Notes Page: 435 Line: +4 First reported by: Dylan Shell
WasRecent book
Should beRecent books


Section12.2.3 Page: 445 Line: -19 First reported by: Armin Galliker
Waswe w omit
Should bewe will omit


Section12.5.2 Page: 457 Line: 7 First reported by: Armin Galliker
Wasan an algebra
Should bean algebra


Section13.1 Page: 480 Line: -8 First reported by: Karthik Thyagaraja
Wasautomated taxi!automated
Should beautomated taxi


Section13.6 Page: 499 Line: +2 First reported by: Peter Stone
Wasa conditional probability distributions
Should bea conditional probability distribution


Section13.6 Page: 499 Line: +3 First reported by: Peter Stone
WasP(T|C
Should beP(T|C)


Section13.6 Page: 499 Line: -14 First reported by: Raymond Wan
Wascombine of the ideas
Should becombine the ideas


SectionExercise 13.17 Page: 508 (BUG) Line: -6 First reported by: Jackie Tsay
WasP( X | Y,Z ) = P( X | Z ) and P( B | X,Z ) = P( Y | Z )
Should beP( X | Y,Z ) = P( X | Z ) and P( Y | X,Z ) = P( Y | Z )
NoteThat is, change B to Y.


Section14.8 Page: 553 Line: +1 First reported by: Luke Hunsberger, hunsberg@cs.vassar.edu
Was(The front cover shows a portion of the network.)
Should be(A portion of the network appears on the front cover, in the background behind the title.)


SectionExercise 14.2 c Page: 558 Line: -3 First reported by: Michael Goldwasser
WasΘ(x|y)
Should beΘ(z|y)


Section15.5 Page: 591 Line: +1 First reported by: Raymond Wan
Wasthe can take advantage
Should bewe can take advantage


Section15.6 Page: 601 Line: +7 First reported by: Raymond Wan
Was"1" ad "2"
Should be"1" and "2"


Section16.3 Page: 619 Line: +6 First reported by: Peter Stone
Was80% patients
Should be80% of patients


Section16.3 Page: 621 Line: +6 First reported by: Peter Stone
Wasthat it is described
Should bethat is described


Section18.7.1 Page: 729 Line: +3 First reported by: Duncan Smith
WasBoth of these nonlinear activation function
Should beBoth of these nonlinear activation functions


Section18.7 (Figure 18.20 caption) Page: 730 Line: -6 First reported by: Duncan Smith
Wasone output unit.
Should betwo output units.


Section18.7.3 Page: 731 Line: -2 First reported by: Duncan Smith
Wastwo output unit
Should betwo output units


Section18.7.3 Page: 732 Line: +3,4 First reported by: Duncan Smith
Wasw04
Should bew0, 4
NoteThis appears twice.


Section18.7.4 Page: 735 Line: 11 First reported by: Duncan Smith
Washidden ¡layer
Should behidden layer


Section20.3.1 Page: 819 Line: -4 First reported by: Raymond Wan
Wasost cases
Should bemost cases


Section21.2.2 Page: 835 Line: +10 First reported by: Eric Shrewsberry
Washow traffic lights
Should behow traffic lights work


SectionIndex Page: 1104 Line: +12 First reported by: Nick Hay
WasDuzeroski
Should beDžeroski