<p>In <a href="https://github.com/mlpack/mlpack/pull/694#discussion_r70134612">src/mlpack/core/data/imputer.hpp</a>:</p>
<pre style='color:#555'>&gt; +
&gt; +  //! Get the mapper
&gt; +  const MapperType&amp; Mapper() const { return mapper; }
&gt; +
&gt; +  //! Modify the given mapper (be careful!)
&gt; +  MapperType&amp; Mapper() { return mapper; }
&gt; +
&gt; + private:
&gt; +  // StrategyType
&gt; +  StrategyType strategy;
&gt; +
&gt; +  // DatasetMapperType&lt;MapPolicy&gt;
&gt; +  MapperType mapper;
&gt; +
&gt; +  // save transpose as a member variable since it is rarely changed.
&gt; +  bool transpose;
</pre>
<p>You're right, <code>Load()</code> does transpose the matrix while loading---but that makes it column-major.  So then if the user used the imputer after that, their matrix would be column-major.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/mlpack/mlpack/pull/694/files/a8818316a04506530e2269a2e0a32ba2f6a1c83b#r70134612">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe/AJ4bFPKVmbaloEE5kGwbt3FF1o_l7lWHks5qTrBqgaJpZM4I07W-">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AJ4bFCv_llZ_EDXLNfTrohvGkznZt4lDks5qTrBqgaJpZM4I07W-.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/mlpack/mlpack/pull/694/files/a8818316a04506530e2269a2e0a32ba2f6a1c83b#r70134612"></link>
  <meta itemprop="name" content="View Pull Request"></meta>
</div>
<meta itemprop="description" content="View this Pull Request on GitHub"></meta>
</div>