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  • Water Jug (Hierarchical Task Decomposition)

    Water Jug (Hierarchical Task Decomposition)

    This project contains a version of the water jug problem that is formulated for hierarchical task decomposition. It involves two levels of problem spaces. The top level has three operators: fill, empty or pour. The next level consists of three operators: pick-up, fill-jug and put-down and they arise in an operator no-change for the super state.

    Note: This agent works with chunking, which compiles the actions in the substates into rules that apply at the top-state. Use the command "learn...
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  • TankSoar (Mapping)

    TankSoar (Mapping)

    This agent extends the capabilities of both the TankSoar simple agent (described here) and the TankSoar simple sound agent (described here) with the ability to create an internal representation of the environment map. It uses this map to better control its radar and find chargers.

    Soar capabilities
    • Hierarchical task composition
    • Creating persistent working memory structures to remember past state
    Download Links
    • This agent is packaged with the TankSoar environment.
    External Envir...
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  • TankSoar (Simple Sound)

    TankSoar (Simple Sound)

    This agent extends the capabilities of the TankSoar simple agent (described here) with the ability to remember hearing where another tank is. The agent can then continue to try to chase the other tank even if it can no longer sense it.

    Soar capabilities
    • Hierarchical task composition
    • Creating persistent working memory structures to remember past state
    Download Links
    • This agent is packaged with the TankSoar environment.
    External EnvironmentDefault Rules
    • None.
    Associated...
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  • TankSoar (Simple)

    TankSoar (Simple)

    This agent implements a tank that wanders around the board looking for objects. It is also able to chase and attack other agents, as well as retreat.

    The agent uses abstract operators that it decomposes into complex combinations of low-level actions. The tank uses its knowledge to select between these activities based on the current situation, just as it selects between different operators. Both of these problems are handled in Soar by allowing abstract high-level operators to be implemented...
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  • Blocks-World (Hierarchical Look-Ahead)

    Blocks-World (Hierarchical Look-Ahead)

    This project augments the Blocks-World Hierarchical Agent with look-ahead state evaluation. The description of the original agent applies to this one. The main difference is that look-ahead is performed in the middle of the three problem spaces that it uses.

    Soar capabilities
    • Hierarchical task composition via subgoaling
    • Look-ahead subgoaling
    • Internally simulates external environment including an i/o link
    Download LinksExternal Env...
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  • Blocks-World (Hierarchical)

    Blocks-World (Hierarchical)

    This project contains a version of blocks world that is formulated for hierarchical task decomposition. It involves three levels of problem spaces. There is sufficient evaluation knowledge so that there is no search/uncertainty at every level. The top level has a single operator: move-block, which moves a block (moving-block) to a destination. The destination can be the top of another block or the table.

    The next level consists of two operators: pick-up and put-down and they arise in...
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  • Arithmetic

    Arithmetic

    An agent that performs multi-column addition and subtraction with borrowing and carrying, all the way down to counting. No math functions are used.

    This program supports arithmetic ands subtraction between two multi-digit numbers. It formulates the problem in multiple columns. It does not use any math functions. As currently formulated, it uses a table of all single digit addition facts (for addition and one subtraction strategy) and tables of simple subtraction facts and addition by...
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  • Algebra Solver

    Algebra Solver

    This is an agent that can solve simple algebra problems with one variable. It parses raw text input from Soar Text I/O into a tree structure, solves the problem in that representation and then prints out the answer.

    Soar capabilities
    • Hierarchical task decomposition
    • Chunking
    Download LinksExternal EnvironmentDefault Rules
    • None.
    Associated Publications
    • None.
    Developer
    • John Laird
    Soar Versions
    • Soar 8,9
    Project Type
    • VisualSoar
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