radu
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Gym-MiniGrid
同期ミラー https://github.com/maximecb/gym-minigrid.git


			
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          <section id="fetch">
<h1>Fetch<a class="headerlink" href="#fetch" title="Permalink to this headline">#</a></h1>
<section id="description">
<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">#</a></h2>
<p>This environment has multiple objects of assorted types and colors. The
agent receives a textual string as part of its observation telling it which
object to pick up. Picking up the wrong object terminates the episode with
zero reward.</p>
</section>
<section id="mission-space">
<h2>Mission Space<a class="headerlink" href="#mission-space" title="Permalink to this headline">#</a></h2>
<p>“{syntax} {color} {type}”</p>
<p>{syntax} is one of the following: “get a”, “go get a”, “fetch a”,
“go fetch a”, “you must fetch a”.</p>
<p>{color} is the color of the box. Can be “red”, “green”, “blue”, “purple”,
“yellow” or “grey”.</p>
<p>{type} is the type of the object. Can be “key” or “ball”.</p>
</section>
<section id="action-space">
<h2>Action Space<a class="headerlink" href="#action-space" title="Permalink to this headline">#</a></h2>
<div class="table-wrapper colwidths-auto docutils container">
<table class="colwidths-auto docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>Num</p></th>
<th class="head"><p>Name</p></th>
<th class="head"><p>Action</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p>0</p></td>
<td><p>left</p></td>
<td><p>Turn left</p></td>
</tr>
<tr class="row-odd"><td><p>1</p></td>
<td><p>right</p></td>
<td><p>Turn right</p></td>
</tr>
<tr class="row-even"><td><p>2</p></td>
<td><p>forward</p></td>
<td><p>Move forward</p></td>
</tr>
<tr class="row-odd"><td><p>3</p></td>
<td><p>pickup</p></td>
<td><p>Pick up an object</p></td>
</tr>
<tr class="row-even"><td><p>4</p></td>
<td><p>drop</p></td>
<td><p>Unused</p></td>
</tr>
<tr class="row-odd"><td><p>5</p></td>
<td><p>toggle</p></td>
<td><p>Unused</p></td>
</tr>
<tr class="row-even"><td><p>6</p></td>
<td><p>done</p></td>
<td><p>Unused</p></td>
</tr>
</tbody>
</table>
</div>
</section>
<section id="observation-encoding">
<h2>Observation Encoding<a class="headerlink" href="#observation-encoding" title="Permalink to this headline">#</a></h2>
<ul class="simple">
<li><p>Each tile is encoded as a 3 dimensional tuple:
<code class="docutils literal notranslate"><span class="pre">(OBJECT_IDX,</span> <span class="pre">COLOR_IDX,</span> <span class="pre">STATE)</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">OBJECT_TO_IDX</span></code> and <code class="docutils literal notranslate"><span class="pre">COLOR_TO_IDX</span></code> mapping can be found in
<span class="xref myst">minigrid/minigrid.py</span></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">STATE</span></code> refers to the door state with 0=open, 1=closed and 2=locked</p></li>
</ul>
</section>
<section id="rewards">
<h2>Rewards<a class="headerlink" href="#rewards" title="Permalink to this headline">#</a></h2>
<p>A reward of ‘1’ is given for success, and ‘0’ for failure.</p>
</section>
<section id="termination">
<h2>Termination<a class="headerlink" href="#termination" title="Permalink to this headline">#</a></h2>
<p>The episode ends if any one of the following conditions is met:</p>
<ol class="arabic simple">
<li><p>The agent picks up the correct object.</p></li>
<li><p>The agent picks up the wrong object.</p></li>
<li><p>Timeout (see <code class="docutils literal notranslate"><span class="pre">max_steps</span></code>).</p></li>
</ol>
</section>
<section id="registered-configurations">
<h2>Registered Configurations<a class="headerlink" href="#registered-configurations" title="Permalink to this headline">#</a></h2>
<p>N: number of objects to be generated.</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">MiniGrid-Fetch-5x5-N2-v0</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">MiniGrid-Fetch-6x6-N2-v0</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">MiniGrid-Fetch-8x8-N3-v0</span></code></p></li>
</ul>
</section>
</section>

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<li><a class="reference internal" href="#">Fetch</a><ul>
<li><a class="reference internal" href="#description">Description</a></li>
<li><a class="reference internal" href="#mission-space">Mission Space</a></li>
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