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Commits on Oct 23, 2011

• Added Fig. 18.6 as a test.

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• Converted learning.py to 3rd edition.

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Commits on Oct 19, 2011

• Added Python 2.5-7 version check.

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• Correct doc comment. Start on elimination_ask().

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Commits on Oct 17, 2011

• Renamed Object to Thing. (Too close to built-in 'object'.) Minor doc improvements.

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• Auto-convert agent programs to agents.

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• Provisionally dropping support for Python 2.4. Changed some loops to use any() and all().

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• Stopped subclassing Agent just for the sake of defining an agent program.

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Commits on Oct 13, 2011

• More-consistent variable names.

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• probability.py tightened some more. Added assertions and restored doctest.

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• Move BoolCPT into the BayesNode class.

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• Document enumerate_all(). Fix a couple of figure refs missed before.

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• Minor cleanup.

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• Tightened up probability.py.

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Commits on Oct 12, 2011

• Fixed doc comment.

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• Patched bug: enumeration_joint_ask gave wrong answers when the query variable overlaps the evidence.

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• probability.py converted to 3rd edition. Needs a review of the logic still.

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• Changed ndigits to numfmt -- more like other code.

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• Fixed: enumerate_joint_ask would raise KeyError on a combo of var values that didn't happen to be set. Though maybe this is too lenient, catching KeyError in ProbDist.__getitem__? (instead of in Jo…

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Commits on Oct 11, 2011

• search.py converted to 3rd edition.

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• Started converting to 3rd edition. agents.py converted plus a little extra cleanup.

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Commits on Oct 10, 2011

• Untabified source code.

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• Trivial cleanup.

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• Agent.__init__ now takes a program parameter. A few more nonlocal-state-variable problems found and fixed. One agent program rewritten as a callable instance since it uses both state variables and …

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• Moved agent-program definition back into the constructors to get rid of all the copying between parameters, instance vars, and nonlocals. Fixed nonlocal state-var bug in ReflexAgentWithState.

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• Remove redundant constructor.

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Commits on Oct 9, 2011

• Made doctests work in Python 2.4. Not sure it'll keep being worth it, but these changes were minor.

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• Made Sudoku example work in Python 2.5.

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• Reformat to fit in 80 columns.

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Commits on Oct 8, 2011

• Some genetic_search() fixes: states were lists but had .mutate() called on them; pmut was probability of *not* mutating; initial population nonrandom; bad fitness function.

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• Break ties at random in hill_climbing.

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Commits on Oct 7, 2011

• Renamed disassociate -> dissociate.

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• Fixed path() to follow its doc comment (first-to-last order).

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• Note remaining problems with SimpleProblemSolvingAgent.

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• Fixed bug: nonlocals assigned as locals.

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