Deploy to GitHub Pages: 11697a5a

ec82e680 · Travis CI · c4430d1c · ec82e680 · ec82e680 · ec82e680
8 changed file
--- a/develop/doc/_sources/design/if_else_op.md.txt
+++ b/develop/doc/_sources/design/if_else_op.md.txt
+IfOp should have only one branch. An IfOp operator takes a `cond` variable whose value must be a vector of N boolean elements. Its return value has M (M<=N) instances, each corresponds to a true element in `cond`.
+```python
+import paddle as pd
+x = var()
+y = var()
+cond = var()
+b = pd.create_ifop(inputs=[x], output_num=1)
+with b.true_block():
+    x = b.inputs(0)
+    z = operator.add(x, y)
+    b.set_output(0, operator.softmax(z))
+out = b(cond)
+```
+If we want the output still has N instances, we can use IfElseOp with a default value, whose minibatch size must be N:
+```python
+import paddle as pd
+x = var()
+y = var()
+cond = var()
+default_value = var()
+b = pd.create_ifelseop(inputs=[x], output_num=1)
+with b.true_block():
+    x = b.inputs(0)
+    z = operator.add(x, y)
+    b.set_output(0, operator.softmax(z))
+with b.false_block():
+    x = b.inputs(0)
+    z = layer.fc(x)
+    b.set_output(0, operator.softmax(z))
+out = b(cond)
+```
+If only true_block is set in an IfElseOp, we can have a default value for false as:
+```python
+import paddle as pd
+x = var()
+y = var()
+cond = var()
+default_value = var()
+b = pd.create_ifelseop(inputs=[x], output_num=1, default_value)
+with b.true_block():
+    x = b.inputs(0)
+    z = operator.add(x, y)
+    b.set_output(0, operator.softmax(z))
+out = b(cond)
+```
+where default_value is a list of vars for `cond` == False.
--- a/develop/doc/design/if_else_op.html
+++ b/develop/doc/design/if_else_op.html
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>&lt;no title&gt; &mdash; PaddlePaddle  documentation</title>
+    <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
+        <link rel="index" title="Index"
+              href="../genindex.html"/>
+        <link rel="search" title="Search" href="../search.html"/>
+    <link rel="top" title="PaddlePaddle  documentation" href="../index.html"/> 
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/perfect-scrollbar/0.6.14/css/perfect-scrollbar.min.css" type="text/css" />
+  <link rel="stylesheet" href="../_static/css/override.css" type="text/css" />
+  <script>
+  var _hmt = _hmt || [];
+  (function() {
+    var hm = document.createElement("script");
+    hm.src = "//hm.baidu.com/hm.js?b9a314ab40d04d805655aab1deee08ba";
+    var s = document.getElementsByTagName("script")[0]; 
+    s.parentNode.insertBefore(hm, s);
+  })();
+  </script>
+  <script src="../_static/js/modernizr.min.js"></script>
+</head>
+<body class="wy-body-for-nav" role="document">
+  <header class="site-header">
+    <div class="site-logo">
+      <a href="/"><img src="../_static/images/PP_w.png"></a>
+    </div>
+    <div class="site-nav-links">
+      <div class="site-menu">
+        <a class="fork-on-github" href="https://github.com/PaddlePaddle/Paddle" target="_blank"><i class="fa fa-github"></i>Fork me on Github</a>
+        <div class="language-switcher dropdown">
+          <a type="button" data-toggle="dropdown">
+            <span>English</span>
+            <i class="fa fa-angle-up"></i>
+            <i class="fa fa-angle-down"></i>
+          </a>
+          <ul class="dropdown-menu">
+            <li><a href="/doc_cn">中文</a></li>
+            <li><a href="/doc">English</a></li>
+          </ul>
+        </div>
+        <ul class="site-page-links">
+          <li><a href="/">Home</a></li>
+        </ul>
+      </div>
+      <div class="doc-module">
+        <ul>
+<li class="toctree-l1"><a class="reference internal" href="../getstarted/index_en.html">GET STARTED</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../howto/index_en.html">HOW TO</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../api/index_en.html">API</a></li>
+</ul>
+<div role="search">
+  <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
+    <input type="text" name="q" placeholder="Search docs" />
+    <input type="hidden" name="check_keywords" value="yes" />
+    <input type="hidden" name="area" value="default" />
+  </form>
+</div>        
+      </div>
+    </div>
+  </header>
+  <div class="main-content-wrap">
+    <nav class="doc-menu-vertical" role="navigation">
+          <ul>
+<li class="toctree-l1"><a class="reference internal" href="../getstarted/index_en.html">GET STARTED</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../getstarted/build_and_install/index_en.html">Install and Build</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../getstarted/build_and_install/docker_install_en.html">PaddlePaddle in Docker Containers</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../getstarted/build_and_install/build_from_source_en.html">Installing from Sources</a></li>
+</ul>
+</li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../howto/index_en.html">HOW TO</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/cmd_parameter/index_en.html">Set Command-line Parameters</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../howto/usage/cmd_parameter/use_case_en.html">Use Case</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../howto/usage/cmd_parameter/arguments_en.html">Argument Outline</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../howto/usage/cmd_parameter/detail_introduction_en.html">Detail Description</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/cluster/cluster_train_en.html">Run Distributed Training</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/k8s/k8s_en.html">Paddle On Kubernetes</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/k8s/k8s_aws_en.html">Distributed PaddlePaddle Training on AWS with Kubernetes</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/dev/build_en.html">Build PaddlePaddle from Source Code and Run Unit Test</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/dev/new_layer_en.html">Write New Layers</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/dev/contribute_to_paddle_en.html">Contribute Code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/deep_model/rnn/index_en.html">RNN Models</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../howto/deep_model/rnn/rnn_config_en.html">RNN Configuration</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/optimization/gpu_profiling_en.html">Tune GPU Performance</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../api/index_en.html">API</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../api/v2/model_configs.html">Model Configuration</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/activation.html">Activation</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/layer.html">Layers</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/evaluators.html">Evaluators</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/optimizer.html">Optimizer</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/pooling.html">Pooling</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/networks.html">Networks</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/attr.html">Parameter Attribute</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../api/v2/data.html">Data Reader Interface and DataSets</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../api/v2/run_logic.html">Training and Inference</a></li>
+</ul>
+</li>
+</ul>
+    </nav>
+    <section class="doc-content-wrap">
+<div role="navigation" aria-label="breadcrumbs navigation">
+  <ul class="wy-breadcrumbs">
+    <li>&lt;no title&gt;</li>
+  </ul>
+</div>
+      <div class="wy-nav-content" id="doc-content">
+        <div class="rst-content">
+          <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
+           <div itemprop="articleBody">
+  <p>IfOp should have only one branch. An IfOp operator takes a <code class="docutils literal"><span class="pre">cond</span></code> variable whose value must be a vector of N boolean elements. Its return value has M (M&lt;=N) instances, each corresponds to a true element in <code class="docutils literal"><span class="pre">cond</span></code>.</p>
+<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">paddle</span> <span class="kn">as</span> <span class="nn">pd</span>
+<span class="n">x</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">y</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">cond</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">b</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">create_ifop</span><span class="p">(</span><span class="n">inputs</span><span class="o">=</span><span class="p">[</span><span class="n">x</span><span class="p">],</span> <span class="n">output_num</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">true_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="n">out</span> <span class="o">=</span> <span class="n">b</span><span class="p">(</span><span class="n">cond</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>If we want the output still has N instances, we can use IfElseOp with a default value, whose minibatch size must be N:</p>
+<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">paddle</span> <span class="kn">as</span> <span class="nn">pd</span>
+<span class="n">x</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">y</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">cond</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">default_value</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">b</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">create_ifelseop</span><span class="p">(</span><span class="n">inputs</span><span class="o">=</span><span class="p">[</span><span class="n">x</span><span class="p">],</span> <span class="n">output_num</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">true_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">false_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">layer</span><span class="o">.</span><span class="n">fc</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="n">out</span> <span class="o">=</span> <span class="n">b</span><span class="p">(</span><span class="n">cond</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>If only true_block is set in an IfElseOp, we can have a default value for false as:</p>
+<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">paddle</span> <span class="kn">as</span> <span class="nn">pd</span>
+<span class="n">x</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">y</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">cond</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">default_value</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">b</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">create_ifelseop</span><span class="p">(</span><span class="n">inputs</span><span class="o">=</span><span class="p">[</span><span class="n">x</span><span class="p">],</span> <span class="n">output_num</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">default_value</span><span class="p">)</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">true_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="n">out</span> <span class="o">=</span> <span class="n">b</span><span class="p">(</span><span class="n">cond</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>where default_value is a list of vars for <code class="docutils literal"><span class="pre">cond</span></code> == False.</p>
+           </div>
+          </div>
+          <footer>
+  <hr/>
+  <div role="contentinfo">
+    <p>
+        &copy; Copyright 2016, PaddlePaddle developers.
+    </p>
+  </div>
+  Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. 
+</footer>
+        </div>
+      </div>
+    </section>
+  </div>
+    <script type="text/javascript">
+        var DOCUMENTATION_OPTIONS = {
+            URL_ROOT:'../',
+            VERSION:'',
+            COLLAPSE_INDEX:false,
+            FILE_SUFFIX:'.html',
+            HAS_SOURCE:  true,
+            SOURCELINK_SUFFIX: ".txt",
+        };
+    </script>
+      <script type="text/javascript" src="../_static/jquery.js"></script>
+      <script type="text/javascript" src="../_static/underscore.js"></script>
+      <script type="text/javascript" src="../_static/doctools.js"></script>
+      <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
+    <script type="text/javascript" src="../_static/js/theme.js"></script>
+  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/perfect-scrollbar/0.6.14/js/perfect-scrollbar.jquery.min.js"></script>
+  <script src="../_static/js/paddle_doc_init.js"></script> 
+</body>
+</html>
\ No newline at end of file
--- a/develop/doc/objects.inv
+++ b/develop/doc/objects.inv
--- a/develop/doc/searchindex.js
+++ b/develop/doc/searchindex.js
--- a/develop/doc_cn/_sources/design/if_else_op.md.txt
+++ b/develop/doc_cn/_sources/design/if_else_op.md.txt
+IfOp should have only one branch. An IfOp operator takes a `cond` variable whose value must be a vector of N boolean elements. Its return value has M (M<=N) instances, each corresponds to a true element in `cond`.
+```python
+import paddle as pd
+x = var()
+y = var()
+cond = var()
+b = pd.create_ifop(inputs=[x], output_num=1)
+with b.true_block():
+    x = b.inputs(0)
+    z = operator.add(x, y)
+    b.set_output(0, operator.softmax(z))
+out = b(cond)
+```
+If we want the output still has N instances, we can use IfElseOp with a default value, whose minibatch size must be N:
+```python
+import paddle as pd
+x = var()
+y = var()
+cond = var()
+default_value = var()
+b = pd.create_ifelseop(inputs=[x], output_num=1)
+with b.true_block():
+    x = b.inputs(0)
+    z = operator.add(x, y)
+    b.set_output(0, operator.softmax(z))
+with b.false_block():
+    x = b.inputs(0)
+    z = layer.fc(x)
+    b.set_output(0, operator.softmax(z))
+out = b(cond)
+```
+If only true_block is set in an IfElseOp, we can have a default value for false as:
+```python
+import paddle as pd
+x = var()
+y = var()
+cond = var()
+default_value = var()
+b = pd.create_ifelseop(inputs=[x], output_num=1, default_value)
+with b.true_block():
+    x = b.inputs(0)
+    z = operator.add(x, y)
+    b.set_output(0, operator.softmax(z))
+out = b(cond)
+```
+where default_value is a list of vars for `cond` == False.
--- a/develop/doc_cn/design/if_else_op.html
+++ b/develop/doc_cn/design/if_else_op.html
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>&lt;no title&gt; &mdash; PaddlePaddle  文档</title>
+    <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
+        <link rel="index" title="索引"
+              href="../genindex.html"/>
+        <link rel="search" title="搜索" href="../search.html"/>
+    <link rel="top" title="PaddlePaddle  文档" href="../index.html"/> 
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/perfect-scrollbar/0.6.14/css/perfect-scrollbar.min.css" type="text/css" />
+  <link rel="stylesheet" href="../_static/css/override.css" type="text/css" />
+  <script>
+  var _hmt = _hmt || [];
+  (function() {
+    var hm = document.createElement("script");
+    hm.src = "//hm.baidu.com/hm.js?b9a314ab40d04d805655aab1deee08ba";
+    var s = document.getElementsByTagName("script")[0]; 
+    s.parentNode.insertBefore(hm, s);
+  })();
+  </script>
+  <script src="../_static/js/modernizr.min.js"></script>
+</head>
+<body class="wy-body-for-nav" role="document">
+  <header class="site-header">
+    <div class="site-logo">
+      <a href="/"><img src="../_static/images/PP_w.png"></a>
+    </div>
+    <div class="site-nav-links">
+      <div class="site-menu">
+        <a class="fork-on-github" href="https://github.com/PaddlePaddle/Paddle" target="_blank"><i class="fa fa-github"></i>Fork me on Github</a>
+        <div class="language-switcher dropdown">
+          <a type="button" data-toggle="dropdown">
+            <span>English</span>
+            <i class="fa fa-angle-up"></i>
+            <i class="fa fa-angle-down"></i>
+          </a>
+          <ul class="dropdown-menu">
+            <li><a href="/doc_cn">中文</a></li>
+            <li><a href="/doc">English</a></li>
+          </ul>
+        </div>
+        <ul class="site-page-links">
+          <li><a href="/">Home</a></li>
+        </ul>
+      </div>
+      <div class="doc-module">
+        <ul>
+<li class="toctree-l1"><a class="reference internal" href="../getstarted/index_cn.html">新手入门</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../howto/index_cn.html">进阶指南</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../api/index_cn.html">API</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../faq/index_cn.html">FAQ</a></li>
+</ul>
+<div role="search">
+  <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
+    <input type="text" name="q" placeholder="Search docs" />
+    <input type="hidden" name="check_keywords" value="yes" />
+    <input type="hidden" name="area" value="default" />
+  </form>
+</div>        
+      </div>
+    </div>
+  </header>
+  <div class="main-content-wrap">
+    <nav class="doc-menu-vertical" role="navigation">
+          <ul>
+<li class="toctree-l1"><a class="reference internal" href="../getstarted/index_cn.html">新手入门</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../getstarted/build_and_install/index_cn.html">安装与编译</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../getstarted/build_and_install/docker_install_cn.html">PaddlePaddle的Docker容器使用方式</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../getstarted/build_and_install/cmake/build_from_source_cn.html">PaddlePaddle的编译选项</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../getstarted/concepts/use_concepts_cn.html">基本使用概念</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../howto/index_cn.html">进阶指南</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/cmd_parameter/index_cn.html">设置命令行参数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../howto/usage/cmd_parameter/use_case_cn.html">使用案例</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../howto/usage/cmd_parameter/arguments_cn.html">参数概述</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../howto/usage/cmd_parameter/detail_introduction_cn.html">细节描述</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/cluster/cluster_train_cn.html">运行分布式训练</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/k8s/k8s_basis_cn.html">Kubernetes 简介</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/k8s/k8s_cn.html">Kubernetes单机训练</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/usage/k8s/k8s_distributed_cn.html">Kubernetes分布式训练</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/dev/build_cn.html">编译PaddlePaddle和运行单元测试</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/dev/write_docs_cn.html">如何贡献/修改文档</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/dev/contribute_to_paddle_cn.html">如何贡献代码</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/deep_model/rnn/index_cn.html">RNN相关模型</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../howto/deep_model/rnn/rnn_config_cn.html">RNN配置</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../howto/deep_model/rnn/recurrent_group_cn.html">Recurrent Group教程</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../howto/deep_model/rnn/hierarchical_layer_cn.html">支持双层序列作为输入的Layer</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../howto/deep_model/rnn/hrnn_rnn_api_compare_cn.html">单双层RNN API对比介绍</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../howto/optimization/gpu_profiling_cn.html">GPU性能分析与调优</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../api/index_cn.html">API</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../api/v2/model_configs.html">模型配置</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/activation.html">Activation</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/layer.html">Layers</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/evaluators.html">Evaluators</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/optimizer.html">Optimizer</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/pooling.html">Pooling</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/networks.html">Networks</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../api/v2/config/attr.html">Parameter Attribute</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../api/v2/data.html">数据访问</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../api/v2/run_logic.html">训练与应用</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../faq/index_cn.html">FAQ</a></li>
+</ul>
+    </nav>
+    <section class="doc-content-wrap">
+<div role="navigation" aria-label="breadcrumbs navigation">
+  <ul class="wy-breadcrumbs">
+    <li>&lt;no title&gt;</li>
+  </ul>
+</div>
+      <div class="wy-nav-content" id="doc-content">
+        <div class="rst-content">
+          <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
+           <div itemprop="articleBody">
+  <p>IfOp should have only one branch. An IfOp operator takes a <code class="docutils literal"><span class="pre">cond</span></code> variable whose value must be a vector of N boolean elements. Its return value has M (M&lt;=N) instances, each corresponds to a true element in <code class="docutils literal"><span class="pre">cond</span></code>.</p>
+<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">paddle</span> <span class="kn">as</span> <span class="nn">pd</span>
+<span class="n">x</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">y</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">cond</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">b</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">create_ifop</span><span class="p">(</span><span class="n">inputs</span><span class="o">=</span><span class="p">[</span><span class="n">x</span><span class="p">],</span> <span class="n">output_num</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">true_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="n">out</span> <span class="o">=</span> <span class="n">b</span><span class="p">(</span><span class="n">cond</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>If we want the output still has N instances, we can use IfElseOp with a default value, whose minibatch size must be N:</p>
+<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">paddle</span> <span class="kn">as</span> <span class="nn">pd</span>
+<span class="n">x</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">y</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">cond</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">default_value</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">b</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">create_ifelseop</span><span class="p">(</span><span class="n">inputs</span><span class="o">=</span><span class="p">[</span><span class="n">x</span><span class="p">],</span> <span class="n">output_num</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">true_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">false_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">layer</span><span class="o">.</span><span class="n">fc</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="n">out</span> <span class="o">=</span> <span class="n">b</span><span class="p">(</span><span class="n">cond</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>If only true_block is set in an IfElseOp, we can have a default value for false as:</p>
+<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">paddle</span> <span class="kn">as</span> <span class="nn">pd</span>
+<span class="n">x</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">y</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">cond</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">default_value</span> <span class="o">=</span> <span class="n">var</span><span class="p">()</span>
+<span class="n">b</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">create_ifelseop</span><span class="p">(</span><span class="n">inputs</span><span class="o">=</span><span class="p">[</span><span class="n">x</span><span class="p">],</span> <span class="n">output_num</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">default_value</span><span class="p">)</span>
+<span class="k">with</span> <span class="n">b</span><span class="o">.</span><span class="n">true_block</span><span class="p">():</span>
+    <span class="n">x</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">inputs</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+    <span class="n">z</span> <span class="o">=</span> <span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
+    <span class="n">b</span><span class="o">.</span><span class="n">set_output</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">operator</span><span class="o">.</span><span class="n">softmax</span><span class="p">(</span><span class="n">z</span><span class="p">))</span>
+<span class="n">out</span> <span class="o">=</span> <span class="n">b</span><span class="p">(</span><span class="n">cond</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>where default_value is a list of vars for <code class="docutils literal"><span class="pre">cond</span></code> == False.</p>
+           </div>
+          </div>
+          <footer>
+  <hr/>
+  <div role="contentinfo">
+    <p>
+        &copy; Copyright 2016, PaddlePaddle developers.
+    </p>
+  </div>
+  Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. 
+</footer>
+        </div>
+      </div>
+    </section>
+  </div>
+    <script type="text/javascript">
+        var DOCUMENTATION_OPTIONS = {
+            URL_ROOT:'../',
+            VERSION:'',
+            COLLAPSE_INDEX:false,
+            FILE_SUFFIX:'.html',
+            HAS_SOURCE:  true,
+            SOURCELINK_SUFFIX: ".txt",
+        };
+    </script>
+      <script type="text/javascript" src="../_static/jquery.js"></script>
+      <script type="text/javascript" src="../_static/underscore.js"></script>
+      <script type="text/javascript" src="../_static/doctools.js"></script>
+      <script type="text/javascript" src="../_static/translations.js"></script>
+      <script type="text/javascript" src="https://cdn.bootcss.com/mathjax/2.7.0/MathJax.js"></script>
+    <script type="text/javascript" src="../_static/js/theme.js"></script>
+  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/perfect-scrollbar/0.6.14/js/perfect-scrollbar.jquery.min.js"></script>
+  <script src="../_static/js/paddle_doc_init.js"></script> 
+</body>
+</html>
\ No newline at end of file
--- a/develop/doc_cn/objects.inv
+++ b/develop/doc_cn/objects.inv
--- a/develop/doc_cn/searchindex.js
+++ b/develop/doc_cn/searchindex.js