aima3 1.0.11

Artificial Intelligence: A Modern Approach, in Python3

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<a href="http://aima.cs.berkeley.edu/"><img src="https://raw.githubusercontent.com/aimacode/aima-python/master/images/aima_logo.png"></a><br><br>
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``aima-python`` |Build Status| |Binder|
=======================================

Python code for the book *`Artificial Intelligence: A Modern
Approach <http://aima.cs.berkeley.edu>`__.* You can use this in
conjunction with a course on AI, or for study on your own. We're looking
for `solid
contributors <https://github.com/aimacode/aima-python/blob/master/CONTRIBUTING.md>`__
to help.

Structure of the Project
------------------------

When complete, this project will have Python implementations for all the
pseudocode algorithms in the book, as well as tests and examples of use.
For each major topic, such as ``nlp`` (natural language processing), we
provide the following files:

- ``nlp.py``: Implementations of all the pseudocode algorithms, and
necessary support functions/classes/data.
- ``tests/test_nlp.py``: A lightweight test suite, using ``assert``
statements, designed for use with
```py.test`` <http://pytest.org/latest/>`__, but also usable on their
own.
- ``nlp.ipynb``: A Jupyter (IPython) notebook that explains and gives
examples of how to use the code.
- ``nlp_apps.ipynb``: A Jupyter notebook that gives example
applications of the code.

Python 3.4 and up
-----------------

| This code requires Python 3.4 or later, and does not run in Python 2.
You can `install Python <https://www.python.org/downloads>`__ or use a
browser-based Python interpreter such as
`repl.it <https://repl.it/languages/python3>`__.
| You can run the code in an IDE, or from the command line with
``python -i filename.py`` where the ``-i`` option puts you in an
interactive loop where you can run Python functions. See
`jupyter.org <http://jupyter.org/>`__ for instructions on setting up
your own Jupyter notebook environment, or run the notebooks online
with `try.jupiter.org <https://try.jupyter.org/>`__.

Index of Algorithms
===================

Here is a table of algorithms, the figure, name of the algorithm in the
book and in the repository, and the file where they are implemented in
the repository. This chart was made for the third edition of the book
and is being updated for the upcoming fourth edition. Empty
implementations are a good place for contributors to look for an issue.
The `aima-pseudocode <https://github.com/aimacode/aima-pseudocode>`__
project describes all the algorithms from the book. An asterisk next to
the file name denotes the algorithm is not fully implemented. Another
great place for contributors to start is by adding tests and writing on
the notebooks. You can see which algorithms have tests and notebook
sections below. If the algorithm you want to work on is covered, don't
worry! You can still add more tests and provide some examples of use in
the notebook!

+-------+----------------------+-------------------+--------------------+-----+--------+
| **Fig | **Name (in 3rd | **Name (in | **File** | **T | **Note |
| ure** | edition)** | repository)** | | est | book** |
| | | | | s** | |
+=======+======================+===================+====================+=====+========+
| 2 | Random-Vacuum-Agent | ``RandomVacuumAge | ```agents.py`` <.. | Don | |
| | | nt`` | /master/agents.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2 | Model-Based-Vacuum-A | ``ModelBasedVacuu | ```agents.py`` <.. | Don | |
| | gent | mAgent`` | /master/agents.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2.1 | Environment | ``Environment`` | ```agents.py`` <.. | Don | Includ |
| | | | /master/agents.py> | e | ed |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2.1 | Agent | ``Agent`` | ```agents.py`` <.. | Don | Includ |
| | | | /master/agents.py> | e | ed |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2.3 | Table-Driven-Vacuum- | ``TableDrivenVacu | ```agents.py`` <.. | | |
| | Agent | umAgent`` | /master/agents.py> | | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2.7 | Table-Driven-Agent | ``TableDrivenAgen | ```agents.py`` <.. | | |
| | | t`` | /master/agents.py> | | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2.8 | Reflex-Vacuum-Agent | ``ReflexVacuumAge | ```agents.py`` <.. | Don | |
| | | nt`` | /master/agents.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2.10 | Simple-Reflex-Agent | ``SimpleReflexAge | ```agents.py`` <.. | | |
| | | nt`` | /master/agents.py> | | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 2.12 | Model-Based-Reflex-A | ``ReflexAgentWith | ```agents.py`` <.. | | |
| | gent | State`` | /master/agents.py> | | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3 | Problem | ``Problem`` | ```search.py`` <.. | Don | |
| | | | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3 | Node | ``Node`` | ```search.py`` <.. | Don | |
| | | | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3 | Queue | ``Queue`` | ```utils.py`` <../ | Don | |
| | | | master/utils.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.1 | Simple-Problem-Solvi | ``SimpleProblemSo | ```search.py`` <.. | | |
| | ng-Agent | lvingAgent`` | /master/search.py> | | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.2 | Romania | ``romania`` | ```search.py`` <.. | Don | Includ |
| | | | /master/search.py> | e | ed |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.7 | Tree-Search | ``tree_search`` | ```search.py`` <.. | Don | |
| | | | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.7 | Graph-Search | ``graph_search`` | ```search.py`` <.. | Don | |
| | | | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.11 | Breadth-First-Search | ``breadth_first_s | ```search.py`` <.. | Don | Includ |
| | | earch`` | /master/search.py> | e | ed |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.14 | Uniform-Cost-Search | ``uniform_cost_se | ```search.py`` <.. | Don | Includ |
| | | arch`` | /master/search.py> | e | ed |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.17 | Depth-Limited-Search | ``depth_limited_s | ```search.py`` <.. | Don | |
| | | earch`` | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.18 | Iterative-Deepening- | ``iterative_deepe | ```search.py`` <.. | Don | |
| | Search | ning_search`` | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.22 | Best-First-Search | ``best_first_grap | ```search.py`` <.. | Don | |
| | | h_search`` | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.24 | A\*-Search | ``astar_search`` | ```search.py`` <.. | Don | Includ |
| | | | /master/search.py> | e | ed |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 3.26 | Recursive-Best-First | ``recursive_best_ | ```search.py`` <.. | Don | |
| | -Search | first_search`` | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 4.2 | Hill-Climbing | ``hill_climbing`` | ```search.py`` <.. | Don | |
| | | | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 4.5 | Simulated-Annealing | ``simulated_annea | ```search.py`` <.. | Don | |
| | | ling`` | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 4.8 | Genetic-Algorithm | ``genetic_algorit | ```search.py`` <.. | Don | Includ |
| | | hm`` | /master/search.py> | e | ed |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 4.11 | And-Or-Graph-Search | ``and_or_graph_se | ```search.py`` <.. | Don | |
| | | arch`` | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 4.21 | Online-DFS-Agent | ``online_dfs_agen | ```search.py`` <.. | | |
| | | t`` | /master/search.py> | | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 4.24 | LRTA\*-Agent | ``LRTAStarAgent`` | ```search.py`` <.. | Don | |
| | | | /master/search.py> | e | |
| | | | `__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 5.3 | Minimax-Decision | ``minimax_decisio | ```games.py`` <../ | Don | Includ |
| | | n`` | master/games.py>`_ | e | ed |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 5.7 | Alpha-Beta-Search | ``alphabeta_searc | ```games.py`` <../ | Don | Includ |
| | | h`` | master/games.py>`_ | e | ed |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 6 | CSP | ``CSP`` | ```csp.py`` <../ma | Don | Includ |
| | | | ster/csp.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 6.3 | AC-3 | ``AC3`` | ```csp.py`` <../ma | Don | |
| | | | ster/csp.py>`__ | e | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 6.5 | Backtracking-Search | ``backtracking_se | ```csp.py`` <../ma | Don | Includ |
| | | arch`` | ster/csp.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 6.8 | Min-Conflicts | ``min_conflicts`` | ```csp.py`` <../ma | Don | |
| | | | ster/csp.py>`__ | e | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 6.11 | Tree-CSP-Solver | ``tree_csp_solver | ```csp.py`` <../ma | Don | Includ |
| | | `` | ster/csp.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7 | KB | ``KB`` | ```logic.py`` <../ | Don | Includ |
| | | | master/logic.py>`_ | e | ed |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.1 | KB-Agent | ``KB_Agent`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.7 | Propositional Logic | ``Expr`` | ```logic.py`` <../ | Don | |
| | Sentence | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.10 | TT-Entails | ``tt_entails`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.12 | PL-Resolution | ``pl_resolution`` | ```logic.py`` <../ | Don | Includ |
| | | | master/logic.py>`_ | e | ed |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.14 | Convert to CNF | ``to_cnf`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.15 | PL-FC-Entails? | ``pl_fc_resolutio | ```logic.py`` <../ | Don | |
| | | n`` | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.17 | DPLL-Satisfiable? | ``dpll_satisfiabl | ```logic.py`` <../ | Don | |
| | | e`` | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.18 | WalkSAT | ``WalkSAT`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.20 | Hybrid-Wumpus-Agent | ``HybridWumpusAge | | | |
| | | nt`` | | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 7.22 | SATPlan | ``SAT_plan`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 9 | Subst | ``subst`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 9.1 | Unify | ``unify`` | ```logic.py`` <../ | Don | Includ |
| | | | master/logic.py>`_ | e | ed |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 9.3 | FOL-FC-Ask | ``fol_fc_ask`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 9.6 | FOL-BC-Ask | ``fol_bc_ask`` | ```logic.py`` <../ | Don | |
| | | | master/logic.py>`_ | e | |
| | | | _ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 9.8 | Append | | | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 10.1 | Air-Cargo-problem | ``air_cargo`` | ```planning.py`` < | Don | |
| | | | ../master/planning | e | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 10.2 | Spare-Tire-Problem | ``spare_tire`` | ```planning.py`` < | Don | |
| | | | ../master/planning | e | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 10.3 | Three-Block-Tower | ``three_block_tow | ```planning.py`` < | Don | |
| | | er`` | ../master/planning | e | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 10.7 | Cake-Problem | ``have_cake_and_e | ```planning.py`` < | Don | |
| | | at_cake_too`` | ../master/planning | e | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 10.9 | Graphplan | ``GraphPlan`` | ```planning.py`` < | | |
| | | | ../master/planning | | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 10.13 | Partial-Order-Planne | | | | |
| | r | | | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 11.1 | Job-Shop-Problem-Wit | ``job_shop_proble | ```planning.py`` < | Don | |
| | h-Resources | m`` | ../master/planning | e | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 11.5 | Hierarchical-Search | ``hierarchical_se | ```planning.py`` < | | |
| | | arch`` | ../master/planning | | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 11.8 | Angelic-Search | | | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 11.10 | Doubles-tennis | ``double_tennis_p | ```planning.py`` < | | |
| | | roblem`` | ../master/planning | | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 13 | Discrete Probability | ``ProbDist`` | ```probability.py` | Don | Includ |
| | Distribution | | ` <../master/proba | e | ed |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 13.1 | DT-Agent | ``DTAgent`` | ```probability.py` | | |
| | | | ` <../master/proba | | |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 14.9 | Enumeration-Ask | ``enumeration_ask | ```probability.py` | Don | Includ |
| | | `` | ` <../master/proba | e | ed |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 14.11 | Elimination-Ask | ``elimination_ask | ```probability.py` | Don | Includ |
| | | `` | ` <../master/proba | e | ed |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 14.13 | Prior-Sample | ``prior_sample`` | ```probability.py` | | Includ |
| | | | ` <../master/proba | | ed |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 14.14 | Rejection-Sampling | ``rejection_sampl | ```probability.py` | Don | Includ |
| | | ing`` | ` <../master/proba | e | ed |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 14.15 | Likelihood-Weighting | ``likelihood_weig | ```probability.py` | Don | Includ |
| | | hting`` | ` <../master/proba | e | ed |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 14.16 | Gibbs-Ask | ``gibbs_ask`` | ```probability.py` | Don | Includ |
| | | | ` <../master/proba | e | ed |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 15.4 | Forward-Backward | ``forward_backwar | ```probability.py` | Don | |
| | | d`` | ` <../master/proba | e | |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 15.6 | Fixed-Lag-Smoothing | ``fixed_lag_smoot | ```probability.py` | Don | |
| | | hing`` | ` <../master/proba | e | |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 15.17 | Particle-Filtering | ``particle_filter | ```probability.py` | Don | |
| | | ing`` | ` <../master/proba | e | |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 16.9 | Information-Gatherin | | | | |
| | g-Agent | | | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 17.4 | Value-Iteration | ``value_iteration | ```mdp.py`` <../ma | Don | Includ |
| | | `` | ster/mdp.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 17.7 | Policy-Iteration | ``policy_iteratio | ```mdp.py`` <../ma | Don | |
| | | n`` | ster/mdp.py>`__ | e | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 17.9 | POMDP-Value-Iteratio | | | | |
| | n | | | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 18.5 | Decision-Tree-Learni | ``DecisionTreeLea | ```learning.py`` < | Don | Includ |
| | ng | rner`` | ../master/learning | e | ed |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 18.8 | Cross-Validation | ``cross_validatio | ```learning.py`` < | | |
| | | n`` | ../master/learning | | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 18.11 | Decision-List-Learni | ``DecisionListLea | ```learning.py`` < | | |
| | ng | rner`` | ../master/learning | | |
| | | | .py>`__\ \* | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 18.24 | Back-Prop-Learning | ``BackPropagation | ```learning.py`` < | Don | Includ |
| | | Learner`` | ../master/learning | e | ed |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 18.34 | AdaBoost | ``AdaBoost`` | ```learning.py`` < | | |
| | | | ../master/learning | | |
| | | | .py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 19.2 | Current-Best-Learnin | ``current_best_le | ```knowledge.py`` | Don | Includ |
| | g | arning`` | <knowledge.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 19.3 | Version-Space-Learni | ``version_space_l | ```knowledge.py`` | Don | Includ |
| | ng | earning`` | <knowledge.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 19.8 | Minimal-Consistent-D | ``minimal_consist | ```knowledge.py`` | Don | |
| | et | ent_det`` | <knowledge.py>`__ | e | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 19.12 | FOIL | ``FOIL_container` | ```knowledge.py`` | Don | |
| | | ` | <knowledge.py>`__ | e | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 21.2 | Passive-ADP-Agent | ``PassiveADPAgent | ```rl.py`` <../mas | Don | |
| | | `` | ter/rl.py>`__ | e | |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 21.4 | Passive-TD-Agent | ``PassiveTDAgent` | ```rl.py`` <../mas | Don | Includ |
| | | ` | ter/rl.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 21.8 | Q-Learning-Agent | ``QLearningAgent` | ```rl.py`` <../mas | Don | Includ |
| | | ` | ter/rl.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 22.1 | HITS | ``HITS`` | ```nlp.py`` <../ma | Don | Includ |
| | | | ster/nlp.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 23 | Chart-Parse | ``Chart`` | ```nlp.py`` <../ma | Don | Includ |
| | | | ster/nlp.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 23.5 | CYK-Parse | ``CYK_parse`` | ```nlp.py`` <../ma | Don | Includ |
| | | | ster/nlp.py>`__ | e | ed |
+-------+----------------------+-------------------+--------------------+-----+--------+
| 25.9 | Monte-Carlo-Localiza | ``monte_carlo_loc | ```probability.py` | Don | |
| | tion | alization`` | ` <../master/proba | e | |
| | | | bility.py>`__ | | |
+-------+----------------------+-------------------+--------------------+-----+--------+

Index of data structures
========================

Here is a table of the implemented data structures, the figure, name of
the implementation in the repository, and the file where they are
implemented.

+--------------+-------------------------------------+-----------------------------------------------+
| **Figure** | **Name (in repository)** | **File** |
+==============+=====================================+===============================================+
| 3.2 | romania\_map | ```search.py`` <../master/search.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+
| 4.9 | vacumm\_world | ```search.py`` <../master/search.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+
| 4.23 | one\_dim\_state\_space | ```search.py`` <../master/search.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+
| 6.1 | australia\_map | ```search.py`` <../master/search.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+
| 7.13 | wumpus\_world\_inference | ```logic.py`` <../master/logic.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+
| 7.16 | horn\_clauses\_KB | ```logic.py`` <../master/logic.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+
| 17.1 | sequential\_decision\_environment | ```mdp.py`` <../master/mdp.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+
| 18.2 | waiting\_decision\_tree | ```learning.py`` <../master/learning.py>`__ |
+--------------+-------------------------------------+-----------------------------------------------+

Acknowledgements
================

Many thanks for contributions over the years. I got bug reports,
corrected code, and other support from Darius Bacon, Phil Ruggera, Peng
Shao, Amit Patil, Ted Nienstedt, Jim Martin, Ben Catanzariti, and
others. Now that the project is on GitHub, you can see the
`contributors <https://github.com/aimacode/aima-python/graphs/contributors>`__
who are doing a great job of actively improving the project. Many thanks
to all contributors, especially @darius, @SnShine, @reachtarunhere,
@MrDupin, and @Chipe1.

.. raw:: html

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