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<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">sklearn.compose</span></code>.ColumnTransformer</a><ul>
<li><a class="reference internal" href="#examples-using-sklearn-compose-columntransformer">Examples using <code class="docutils literal notranslate"><span class="pre">sklearn.compose.ColumnTransformer</span></code></a></li>
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<div class="section" id="sklearn-compose-columntransformer">
<h1><a class="reference internal" href="../classes.html#module-sklearn.compose" title="sklearn.compose"><code class="xref py py-mod docutils literal notranslate"><span class="pre">sklearn.compose</span></code></a>.ColumnTransformer<a class="headerlink" href="#sklearn-compose-columntransformer" title="Permalink to this headline">¶</a></h1>
<dl class="py class">
<dt id="sklearn.compose.ColumnTransformer">
<em class="property">class </em><code class="sig-prename descclassname">sklearn.compose.</code><code class="sig-name descname">ColumnTransformer</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">transformers</span></em>, <em class="sig-param"><span class="o">*</span></em>, <em class="sig-param"><span class="n">remainder</span><span class="o">=</span><span class="default_value">'drop'</span></em>, <em class="sig-param"><span class="n">sparse_threshold</span><span class="o">=</span><span class="default_value">0.3</span></em>, <em class="sig-param"><span class="n">n_jobs</span><span class="o">=</span><span class="default_value">None</span></em>, <em class="sig-param"><span class="n">transformer_weights</span><span class="o">=</span><span class="default_value">None</span></em>, <em class="sig-param"><span class="n">verbose</span><span class="o">=</span><span class="default_value">False</span></em><span class="sig-paren">)</span><a class="reference external" href="https://github.com/scikit-learn/scikit-learn/blob/23d876161/sklearn/compose/_column_transformer.py#L38"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#sklearn.compose.ColumnTransformer" title="Permalink to this definition">¶</a></dt>
<dd><p>Applies transformers to columns of an array or pandas DataFrame.</p>
<p>This estimator allows different columns or column subsets of the input
to be transformed separately and the features generated by each transformer
will be concatenated to form a single feature space.
This is useful for heterogeneous or columnar data, to combine several
feature extraction mechanisms or transformations into a single transformer.</p>
<p>Read more in the <a class="reference internal" href="../compose.html#column-transformer"><span class="std std-ref">User Guide</span></a>.</p>
<div class="versionadded">
<p><span class="versionmodified added">New in version 0.20.</span></p>
</div>
<dl class="field-list">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><dl>
<dt><strong>transformers</strong><span class="classifier">list of tuples</span></dt><dd><p>List of (name, transformer, columns) tuples specifying the
transformer objects to be applied to subsets of the data.</p>
<dl class="simple">
<dt>name<span class="classifier">str</span></dt><dd><p>Like in Pipeline and FeatureUnion, this allows the transformer and
its parameters to be set using <code class="docutils literal notranslate"><span class="pre">set_params</span></code> and searched in grid
search.</p>
</dd>
<dt>transformer<span class="classifier">{‘drop’, ‘passthrough’} or estimator</span></dt><dd><p>Estimator must support <a class="reference internal" href="../../glossary.html#term-fit"><span class="xref std std-term">fit</span></a> and <a class="reference internal" href="../../glossary.html#term-transform"><span class="xref std std-term">transform</span></a>.
Special-cased strings ‘drop’ and ‘passthrough’ are accepted as
well, to indicate to drop the columns or to pass them through
untransformed, respectively.</p>
</dd>
<dt>columns<span class="classifier">str, array-like of str, int, array-like of int, array-like of bool, slice or callable</span></dt><dd><p>Indexes the data on its second axis. Integers are interpreted as
positional columns, while strings can reference DataFrame columns
by name. A scalar string or int should be used where
<code class="docutils literal notranslate"><span class="pre">transformer</span></code> expects X to be a 1d array-like (vector),
otherwise a 2d array will be passed to the transformer.
A callable is passed the input data <code class="docutils literal notranslate"><span class="pre">X</span></code> and can return any of the
above. To select multiple columns by name or dtype, you can use
<a class="reference internal" href="sklearn.compose.make_column_selector.html#sklearn.compose.make_column_selector" title="sklearn.compose.make_column_selector"><code class="xref py py-obj docutils literal notranslate"><span class="pre">make_column_selector</span></code></a>.</p>
</dd>
</dl>
</dd>
<dt><strong>remainder</strong><span class="classifier">{‘drop’, ‘passthrough’} or estimator, default=’drop’</span></dt><dd><p>By default, only the specified columns in <code class="docutils literal notranslate"><span class="pre">transformers</span></code> are
transformed and combined in the output, and the non-specified
columns are dropped. (default of <code class="docutils literal notranslate"><span class="pre">'drop'</span></code>).
By specifying <code class="docutils literal notranslate"><span class="pre">remainder='passthrough'</span></code>, all remaining columns that
were not specified in <code class="docutils literal notranslate"><span class="pre">transformers</span></code> will be automatically passed
through. This subset of columns is concatenated with the output of
the transformers.
By setting <code class="docutils literal notranslate"><span class="pre">remainder</span></code> to be an estimator, the remaining
non-specified columns will use the <code class="docutils literal notranslate"><span class="pre">remainder</span></code> estimator. The
estimator must support <a class="reference internal" href="../../glossary.html#term-fit"><span class="xref std std-term">fit</span></a> and <a class="reference internal" href="../../glossary.html#term-transform"><span class="xref std std-term">transform</span></a>.
Note that using this feature requires that the DataFrame columns
input at <a class="reference internal" href="../../glossary.html#term-fit"><span class="xref std std-term">fit</span></a> and <a class="reference internal" href="../../glossary.html#term-transform"><span class="xref std std-term">transform</span></a> have identical order.</p>
</dd>
<dt><strong>sparse_threshold</strong><span class="classifier">float, default=0.3</span></dt><dd><p>If the output of the different transformers contains sparse matrices,
these will be stacked as a sparse matrix if the overall density is
lower than this value. Use <code class="docutils literal notranslate"><span class="pre">sparse_threshold=0</span></code> to always return
dense. When the transformed output consists of all dense data, the
stacked result will be dense, and this keyword will be ignored.</p>
</dd>
<dt><strong>n_jobs</strong><span class="classifier">int, default=None</span></dt><dd><p>Number of jobs to run in parallel.
<code class="docutils literal notranslate"><span class="pre">None</span></code> means 1 unless in a <a class="reference external" href="https://joblib.readthedocs.io/en/latest/parallel.html#joblib.parallel_backend" title="(in joblib v1.1.0.dev0)"><code class="xref py py-obj docutils literal notranslate"><span class="pre">joblib.parallel_backend</span></code></a> context.
<code class="docutils literal notranslate"><span class="pre">-1</span></code> means using all processors. See <a class="reference internal" href="../../glossary.html#term-n_jobs"><span class="xref std std-term">Glossary</span></a>
for more details.</p>
</dd>
<dt><strong>transformer_weights</strong><span class="classifier">dict, default=None</span></dt><dd><p>Multiplicative weights for features per transformer. The output of the
transformer is multiplied by these weights. Keys are transformer names,
values the weights.</p>
</dd>
<dt><strong>verbose</strong><span class="classifier">bool, default=False</span></dt><dd><p>If True, the time elapsed while fitting each transformer will be
printed as it is completed.</p>
</dd>
</dl>
</dd>
<dt class="field-even">Attributes</dt>
<dd class="field-even"><dl>
<dt><strong>transformers_</strong><span class="classifier">list</span></dt><dd><p>The collection of fitted transformers as tuples of
(name, fitted_transformer, column). <code class="docutils literal notranslate"><span class="pre">fitted_transformer</span></code> can be an
estimator, ‘drop’, or ‘passthrough’. In case there were no columns
selected, this will be the unfitted transformer.
If there are remaining columns, the final element is a tuple of the
form:
(‘remainder’, transformer, remaining_columns) corresponding to the
<code class="docutils literal notranslate"><span class="pre">remainder</span></code> parameter. If there are remaining columns, then
<code class="docutils literal notranslate"><span class="pre">len(transformers_)==len(transformers)+1</span></code>, otherwise
<code class="docutils literal notranslate"><span class="pre">len(transformers_)==len(transformers)</span></code>.</p>
</dd>
<dt><a class="reference internal" href="#sklearn.compose.ColumnTransformer.named_transformers_" title="sklearn.compose.ColumnTransformer.named_transformers_"><code class="xref py py-obj docutils literal notranslate"><span class="pre">named_transformers_</span></code></a><span class="classifier"><a class="reference internal" href="sklearn.utils.Bunch.html#sklearn.utils.Bunch" title="sklearn.utils.Bunch"><code class="xref py py-class docutils literal notranslate"><span class="pre">Bunch</span></code></a></span></dt><dd><p>Access the fitted transformer by name.</p>
</dd>
<dt><strong>sparse_output_</strong><span class="classifier">bool</span></dt><dd><p>Boolean flag indicating whether the output of <code class="docutils literal notranslate"><span class="pre">transform</span></code> is a
sparse matrix or a dense numpy array, which depends on the output
of the individual transformers and the <code class="docutils literal notranslate"><span class="pre">sparse_threshold</span></code> keyword.</p>
</dd>
</dl>
</dd>
</dl>
<div class="admonition seealso">
<p class="admonition-title">See also</p>
<dl class="simple">
<dt><a class="reference internal" href="sklearn.compose.make_column_transformer.html#sklearn.compose.make_column_transformer" title="sklearn.compose.make_column_transformer"><code class="xref py py-obj docutils literal notranslate"><span class="pre">make_column_transformer</span></code></a></dt><dd><p>Convenience function for combining the outputs of multiple transformer objects applied to column subsets of the original feature space.</p>
</dd>
<dt><a class="reference internal" href="sklearn.compose.make_column_selector.html#sklearn.compose.make_column_selector" title="sklearn.compose.make_column_selector"><code class="xref py py-obj docutils literal notranslate"><span class="pre">make_column_selector</span></code></a></dt><dd><p>Convenience function for selecting columns based on datatype or the columns name with a regex pattern.</p>
</dd>
</dl>
</div>
<p class="rubric">Notes</p>
<p>The order of the columns in the transformed feature matrix follows the
order of how the columns are specified in the <code class="docutils literal notranslate"><span class="pre">transformers</span></code> list.
Columns of the original feature matrix that are not specified are
dropped from the resulting transformed feature matrix, unless specified
in the <code class="docutils literal notranslate"><span class="pre">passthrough</span></code> keyword. Those columns specified with <code class="docutils literal notranslate"><span class="pre">passthrough</span></code>
are added at the right to the output of the transformers.</p>
<p class="rubric">Examples</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="gp">>>> </span><span class="kn">from</span> <span class="nn">sklearn.compose</span> <span class="kn">import</span> <span class="n">ColumnTransformer</span>
<span class="gp">>>> </span><span class="kn">from</span> <span class="nn">sklearn.preprocessing</span> <span class="kn">import</span> <span class="n">Normalizer</span>
<span class="gp">>>> </span><span class="n">ct</span> <span class="o">=</span> <span class="n">ColumnTransformer</span><span class="p">(</span>
<span class="gp">... </span> <span class="p">[(</span><span class="s2">"norm1"</span><span class="p">,</span> <span class="n">Normalizer</span><span class="p">(</span><span class="n">norm</span><span class="o">=</span><span class="s1">'l1'</span><span class="p">),</span> <span class="p">[</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">]),</span>
<span class="gp">... </span> <span class="p">(</span><span class="s2">"norm2"</span><span class="p">,</span> <span class="n">Normalizer</span><span class="p">(</span><span class="n">norm</span><span class="o">=</span><span class="s1">'l1'</span><span class="p">),</span> <span class="nb">slice</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">4</span><span class="p">))])</span>
<span class="gp">>>> </span><span class="n">X</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([[</span><span class="mf">0.</span><span class="p">,</span> <span class="mf">1.</span><span class="p">,</span> <span class="mf">2.</span><span class="p">,</span> <span class="mf">2.</span><span class="p">],</span>
<span class="gp">... </span> <span class="p">[</span><span class="mf">1.</span><span class="p">,</span> <span class="mf">1.</span><span class="p">,</span> <span class="mf">0.</span><span class="p">,</span> <span class="mf">1.</span><span class="p">]])</span>
<span class="gp">>>> </span><span class="c1"># Normalizer scales each row of X to unit norm. A separate scaling</span>
<span class="gp">>>> </span><span class="c1"># is applied for the two first and two last elements of each</span>
<span class="gp">>>> </span><span class="c1"># row independently.</span>
<span class="gp">>>> </span><span class="n">ct</span><span class="o">.</span><span class="n">fit_transform</span><span class="p">(</span><span class="n">X</span><span class="p">)</span>
<span class="go">array([[0. , 1. , 0.5, 0.5],</span>
<span class="go"> [0.5, 0.5, 0. , 1. ]])</span>
</pre></div>
</div>
<p class="rubric">Methods</p>
<table class="longtable docutils align-default">
<colgroup>
<col style="width: 10%" />
<col style="width: 90%" />
</colgroup>
<tbody>
<tr class="row-odd"><td><p><a class="reference internal" href="#sklearn.compose.ColumnTransformer.fit" title="sklearn.compose.ColumnTransformer.fit"><code class="xref py py-obj docutils literal notranslate"><span class="pre">fit</span></code></a>(X[, y])</p></td>
<td><p>Fit all transformers using X.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#sklearn.compose.ColumnTransformer.fit_transform" title="sklearn.compose.ColumnTransformer.fit_transform"><code class="xref py py-obj docutils literal notranslate"><span class="pre">fit_transform</span></code></a>(X[, y])</p></td>
<td><p>Fit all transformers, transform the data and concatenate results.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#sklearn.compose.ColumnTransformer.get_feature_names" title="sklearn.compose.ColumnTransformer.get_feature_names"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_feature_names</span></code></a>()</p></td>
<td><p>Get feature names from all transformers.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#sklearn.compose.ColumnTransformer.get_params" title="sklearn.compose.ColumnTransformer.get_params"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_params</span></code></a>([deep])</p></td>
<td><p>Get parameters for this estimator.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#sklearn.compose.ColumnTransformer.set_params" title="sklearn.compose.ColumnTransformer.set_params"><code class="xref py py-obj docutils literal notranslate"><span class="pre">set_params</span></code></a>(**kwargs)</p></td>
<td><p>Set the parameters of this estimator.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#sklearn.compose.ColumnTransformer.transform" title="sklearn.compose.ColumnTransformer.transform"><code class="xref py py-obj docutils literal notranslate"><span class="pre">transform</span></code></a>(X)</p></td>
<td><p>Transform X separately by each transformer, concatenate results.</p></td>
</tr>
</tbody>
</table>
<dl class="py method">
<dt id="sklearn.compose.ColumnTransformer.fit">
<code class="sig-name descname">fit</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">X</span></em>, <em class="sig-param"><span class="n">y</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference external" href="https://github.com/scikit-learn/scikit-learn/blob/23d876161/sklearn/compose/_column_transformer.py#L444"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#sklearn.compose.ColumnTransformer.fit" title="Permalink to this definition">¶</a></dt>
<dd><p>Fit all transformers using X.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>X</strong><span class="classifier">{array-like, dataframe} of shape (n_samples, n_features)</span></dt><dd><p>Input data, of which specified subsets are used to fit the
transformers.</p>
</dd>
<dt><strong>y</strong><span class="classifier">array-like of shape (n_samples,…), default=None</span></dt><dd><p>Targets for supervised learning.</p>
</dd>
</dl>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><dl class="simple">
<dt><strong>self</strong><span class="classifier">ColumnTransformer</span></dt><dd><p>This estimator</p>
</dd>
</dl>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt id="sklearn.compose.ColumnTransformer.fit_transform">
<code class="sig-name descname">fit_transform</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">X</span></em>, <em class="sig-param"><span class="n">y</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference external" href="https://github.com/scikit-learn/scikit-learn/blob/23d876161/sklearn/compose/_column_transformer.py#L467"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#sklearn.compose.ColumnTransformer.fit_transform" title="Permalink to this definition">¶</a></dt>
<dd><p>Fit all transformers, transform the data and concatenate results.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>X</strong><span class="classifier">{array-like, dataframe} of shape (n_samples, n_features)</span></dt><dd><p>Input data, of which specified subsets are used to fit the
transformers.</p>
</dd>
<dt><strong>y</strong><span class="classifier">array-like of shape (n_samples,), default=None</span></dt><dd><p>Targets for supervised learning.</p>
</dd>
</dl>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><dl class="simple">
<dt><strong>X_t</strong><span class="classifier">{array-like, sparse matrix} of shape (n_samples, sum_n_components)</span></dt><dd><p>hstack of results of transformers. sum_n_components is the
sum of n_components (output dimension) over transformers. If
any result is a sparse matrix, everything will be converted to
sparse matrices.</p>
</dd>
</dl>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt id="sklearn.compose.ColumnTransformer.get_feature_names">
<code class="sig-name descname">get_feature_names</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference external" href="https://github.com/scikit-learn/scikit-learn/blob/23d876161/sklearn/compose/_column_transformer.py#L343"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#sklearn.compose.ColumnTransformer.get_feature_names" title="Permalink to this definition">¶</a></dt>
<dd><p>Get feature names from all transformers.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>feature_names</strong><span class="classifier">list of strings</span></dt><dd><p>Names of the features produced by transform.</p>
</dd>
</dl>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt id="sklearn.compose.ColumnTransformer.get_params">
<code class="sig-name descname">get_params</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">deep</span><span class="o">=</span><span class="default_value">True</span></em><span class="sig-paren">)</span><a class="reference external" href="https://github.com/scikit-learn/scikit-learn/blob/23d876161/sklearn/compose/_column_transformer.py#L205"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#sklearn.compose.ColumnTransformer.get_params" title="Permalink to this definition">¶</a></dt>
<dd><p>Get parameters for this estimator.</p>
<p>Returns the parameters given in the constructor as well as the
estimators contained within the <code class="docutils literal notranslate"><span class="pre">transformers</span></code> of the
<code class="docutils literal notranslate"><span class="pre">ColumnTransformer</span></code>.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>deep</strong><span class="classifier">bool, default=True</span></dt><dd><p>If True, will return the parameters for this estimator and
contained subobjects that are estimators.</p>
</dd>
</dl>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><dl class="simple">
<dt><strong>params</strong><span class="classifier">dict</span></dt><dd><p>Parameter names mapped to their values.</p>
</dd>
</dl>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt id="sklearn.compose.ColumnTransformer.named_transformers_">
<em class="property">property </em><code class="sig-name descname">named_transformers_</code><a class="headerlink" href="#sklearn.compose.ColumnTransformer.named_transformers_" title="Permalink to this definition">¶</a></dt>
<dd><p>Access the fitted transformer by name.</p>
<p>Read-only attribute to access any transformer by given name.
Keys are transformer names and values are the fitted transformer
objects.</p>
</dd></dl>
<dl class="py method">
<dt id="sklearn.compose.ColumnTransformer.set_params">
<code class="sig-name descname">set_params</code><span class="sig-paren">(</span><em class="sig-param"><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="reference external" href="https://github.com/scikit-learn/scikit-learn/blob/23d876161/sklearn/compose/_column_transformer.py#L225"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#sklearn.compose.ColumnTransformer.set_params" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the parameters of this estimator.</p>
<p>Valid parameter keys can be listed with <code class="docutils literal notranslate"><span class="pre">get_params()</span></code>. Note that you
can directly set the parameters of the estimators contained in
<code class="docutils literal notranslate"><span class="pre">transformers</span></code> of <code class="docutils literal notranslate"><span class="pre">ColumnTransformer</span></code>.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><dl class="simple">
<dt>self</dt><dd></dd>
</dl>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt id="sklearn.compose.ColumnTransformer.transform">
<code class="sig-name descname">transform</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">X</span></em><span class="sig-paren">)</span><a class="reference external" href="https://github.com/scikit-learn/scikit-learn/blob/23d876161/sklearn/compose/_column_transformer.py#L525"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#sklearn.compose.ColumnTransformer.transform" title="Permalink to this definition">¶</a></dt>
<dd><p>Transform X separately by each transformer, concatenate results.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>X</strong><span class="classifier">{array-like, dataframe} of shape (n_samples, n_features)</span></dt><dd><p>The data to be transformed by subset.</p>
</dd>
</dl>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><dl class="simple">
<dt><strong>X_t</strong><span class="classifier">{array-like, sparse matrix} of shape (n_samples, sum_n_components)</span></dt><dd><p>hstack of results of transformers. sum_n_components is the
sum of n_components (output dimension) over transformers. If
any result is a sparse matrix, everything will be converted to
sparse matrices.</p>
</dd>
</dl>
</dd>
</dl>
</dd></dl>
</dd></dl>
<div class="section" id="examples-using-sklearn-compose-columntransformer">
<h2>Examples using <code class="docutils literal notranslate"><span class="pre">sklearn.compose.ColumnTransformer</span></code><a class="headerlink" href="#examples-using-sklearn-compose-columntransformer" title="Permalink to this headline">¶</a></h2>
<div class="sphx-glr-thumbcontainer" tooltip="This example illustrates the use of log-linear Poisson regression on the `French Motor Third-Pa..."><div class="figure align-default" id="id1">
<img alt="Poisson regression and non-normal loss" src="../../_images/sphx_glr_plot_poisson_regression_non_normal_loss_thumb.png" />
<p class="caption"><span class="caption-text"><a class="reference internal" href="../../auto_examples/linear_model/plot_poisson_regression_non_normal_loss.html#sphx-glr-auto-examples-linear-model-plot-poisson-regression-non-normal-loss-py"><span class="std std-ref">Poisson regression and non-normal loss</span></a></span><a class="headerlink" href="#id1" title="Permalink to this image">¶</a></p>
</div>
</div><div class="sphx-glr-thumbcontainer" tooltip="This example illustrates the use of Poisson, Gamma and Tweedie regression on the `French Motor ..."><div class="figure align-default" id="id2">
<img alt="Tweedie regression on insurance claims" src="../../_images/sphx_glr_plot_tweedie_regression_insurance_claims_thumb.png" />
<p class="caption"><span class="caption-text"><a class="reference internal" href="../../auto_examples/linear_model/plot_tweedie_regression_insurance_claims.html#sphx-glr-auto-examples-linear-model-plot-tweedie-regression-insurance-claims-py"><span class="std std-ref">Tweedie regression on insurance claims</span></a></span><a class="headerlink" href="#id2" title="Permalink to this image">¶</a></p>
</div>
</div><div class="sphx-glr-thumbcontainer" tooltip="In this example, we will compare the impurity-based feature importance of RandomForestClassifie..."><div class="figure align-default" id="id3">
<img alt="Permutation Importance vs Random Forest Feature Importance (MDI)" src="../../_images/sphx_glr_plot_permutation_importance_thumb.png" />
<p class="caption"><span class="caption-text"><a class="reference internal" href="../../auto_examples/inspection/plot_permutation_importance.html#sphx-glr-auto-examples-inspection-plot-permutation-importance-py"><span class="std std-ref">Permutation Importance vs Random Forest Feature Importance (MDI)</span></a></span><a class="headerlink" href="#id3" title="Permalink to this image">¶</a></p>
</div>
</div><div class="sphx-glr-thumbcontainer" tooltip="This example illustrates how to apply different preprocessing and feature extraction pipelines ..."><div class="figure align-default" id="id4">
<img alt="Column Transformer with Mixed Types" src="../../_images/sphx_glr_plot_column_transformer_mixed_types_thumb.png" />
<p class="caption"><span class="caption-text"><a class="reference internal" href="../../auto_examples/compose/plot_column_transformer_mixed_types.html#sphx-glr-auto-examples-compose-plot-column-transformer-mixed-types-py"><span class="std std-ref">Column Transformer with Mixed Types</span></a></span><a class="headerlink" href="#id4" title="Permalink to this image">¶</a></p>
</div>
</div><div class="sphx-glr-thumbcontainer" tooltip="Datasets can often contain components that require different feature extraction and processing ..."><div class="figure align-default" id="id5">
<img alt="Column Transformer with Heterogeneous Data Sources" src="../../_images/sphx_glr_plot_column_transformer_thumb.png" />
<p class="caption"><span class="caption-text"><a class="reference internal" href="../../auto_examples/compose/plot_column_transformer.html#sphx-glr-auto-examples-compose-plot-column-transformer-py"><span class="std std-ref">Column Transformer with Heterogeneous Data Sources</span></a></span><a class="headerlink" href="#id5" title="Permalink to this image">¶</a></p>
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