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| <li class="navelem"><a class="el" href="namespacedmlc.html">dmlc</a></li><li class="navelem"><a class="el" href="classdmlc_1_1RowBlockIter.html">RowBlockIter</a></li> </ul> |
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| <a href="#pub-methods">Public Member Functions</a> | |
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| <a href="classdmlc_1_1RowBlockIter-members.html">List of all members</a> </div> |
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| <div class="title">dmlc::RowBlockIter< IndexType, DType > Class Template Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div> |
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| |
| <p>Data structure that holds the data <a class="el" href="classdmlc_1_1Row.html" title="one row of training instance">Row</a> block iterator interface that gets RowBlocks Difference between <a class="el" href="classdmlc_1_1RowBlockIter.html" title="Data structure that holds the data Row block iterator interface that gets RowBlocks Difference betwee...">RowBlockIter</a> and <a class="el" href="classdmlc_1_1Parser.html" title="parser interface that parses input data used to load dmlc data format into your own data format Diffe...">Parser</a>: <a class="el" href="classdmlc_1_1RowBlockIter.html" title="Data structure that holds the data Row block iterator interface that gets RowBlocks Difference betwee...">RowBlockIter</a> caches the data internally that can be used to iterate the dataset multiple times, <a class="el" href="classdmlc_1_1Parser.html" title="parser interface that parses input data used to load dmlc data format into your own data format Diffe...">Parser</a> holds very limited internal state and was usually used to read data only once. |
| <a href="classdmlc_1_1RowBlockIter.html#details">More...</a></p> |
| |
| <p><code>#include <<a class="el" href="data_8h_source.html">data.h</a>></code></p> |
| <div class="dynheader"> |
| Inheritance diagram for dmlc::RowBlockIter< IndexType, DType >:</div> |
| <div class="dyncontent"> |
| <div class="center"><img src="classdmlc_1_1RowBlockIter__inherit__graph.png" border="0" usemap="#dmlc_1_1RowBlockIter_3_01IndexType_00_01DType_01_4_inherit__map" alt="Inheritance graph"/></div> |
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| Collaboration diagram for dmlc::RowBlockIter< IndexType, DType >:</div> |
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| <table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> |
| Public Member Functions</h2></td></tr> |
| <tr class="memitem:aa4456f0212e0d8c06e444a31aca0515e"><td class="memItemLeft" align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1RowBlockIter.html#aa4456f0212e0d8c06e444a31aca0515e">NumCol</a> () const =0</td></tr> |
| <tr class="separator:aa4456f0212e0d8c06e444a31aca0515e"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="inherit_header pub_methods_classdmlc_1_1DataIter"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classdmlc_1_1DataIter')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classdmlc_1_1DataIter.html">dmlc::DataIter< RowBlock< IndexType, real_t > ></a></td></tr> |
| <tr class="memitem:aef4acbc5a49dd71edb360149a2b19ee2 inherit pub_methods_classdmlc_1_1DataIter"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1DataIter.html#aef4acbc5a49dd71edb360149a2b19ee2">~DataIter</a> (void) <a class="el" href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html#a80bde16113dc79e7adb7953e006d6b60">DMLC_THROW_EXCEPTION</a></td></tr> |
| <tr class="memdesc:aef4acbc5a49dd71edb360149a2b19ee2 inherit pub_methods_classdmlc_1_1DataIter"><td class="mdescLeft"> </td><td class="mdescRight">destructor <a href="classdmlc_1_1DataIter.html#aef4acbc5a49dd71edb360149a2b19ee2">More...</a><br /></td></tr> |
| <tr class="separator:aef4acbc5a49dd71edb360149a2b19ee2 inherit pub_methods_classdmlc_1_1DataIter"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a77735f53af4bb7490009315607ab9135 inherit pub_methods_classdmlc_1_1DataIter"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1DataIter.html#a77735f53af4bb7490009315607ab9135">BeforeFirst</a> (void)=0</td></tr> |
| <tr class="memdesc:a77735f53af4bb7490009315607ab9135 inherit pub_methods_classdmlc_1_1DataIter"><td class="mdescLeft"> </td><td class="mdescRight">set before first of the item <a href="classdmlc_1_1DataIter.html#a77735f53af4bb7490009315607ab9135">More...</a><br /></td></tr> |
| <tr class="separator:a77735f53af4bb7490009315607ab9135 inherit pub_methods_classdmlc_1_1DataIter"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a1f07f4d4f87485d1de4b6ba1af4d7b5b inherit pub_methods_classdmlc_1_1DataIter"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1DataIter.html#a1f07f4d4f87485d1de4b6ba1af4d7b5b">Next</a> (void)=0</td></tr> |
| <tr class="memdesc:a1f07f4d4f87485d1de4b6ba1af4d7b5b inherit pub_methods_classdmlc_1_1DataIter"><td class="mdescLeft"> </td><td class="mdescRight">move to next item <a href="classdmlc_1_1DataIter.html#a1f07f4d4f87485d1de4b6ba1af4d7b5b">More...</a><br /></td></tr> |
| <tr class="separator:a1f07f4d4f87485d1de4b6ba1af4d7b5b inherit pub_methods_classdmlc_1_1DataIter"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a2695f02f824a515b60d4fb0af6c4e6d6 inherit pub_methods_classdmlc_1_1DataIter"><td class="memItemLeft" align="right" valign="top">virtual const <a class="el" href="structdmlc_1_1RowBlock.html">RowBlock</a>< IndexType, <a class="el" href="namespacedmlc.html#ab23d78846b42ebd3a436e3bc295b73f4">real_t</a> > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1DataIter.html#a2695f02f824a515b60d4fb0af6c4e6d6">Value</a> (void) const=0</td></tr> |
| <tr class="memdesc:a2695f02f824a515b60d4fb0af6c4e6d6 inherit pub_methods_classdmlc_1_1DataIter"><td class="mdescLeft"> </td><td class="mdescRight">get current data <a href="classdmlc_1_1DataIter.html#a2695f02f824a515b60d4fb0af6c4e6d6">More...</a><br /></td></tr> |
| <tr class="separator:a2695f02f824a515b60d4fb0af6c4e6d6 inherit pub_methods_classdmlc_1_1DataIter"><td class="memSeparator" colspan="2"> </td></tr> |
| </table><table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a> |
| Static Public Member Functions</h2></td></tr> |
| <tr class="memitem:a1784cad30bd954853a62ab778a078849"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classdmlc_1_1RowBlockIter.html">RowBlockIter</a>< IndexType, DType > * </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1RowBlockIter.html#a1784cad30bd954853a62ab778a078849">Create</a> (const char *uri, unsigned part_index, unsigned num_parts, const char *type)</td></tr> |
| <tr class="memdesc:a1784cad30bd954853a62ab778a078849"><td class="mdescLeft"> </td><td class="mdescRight">create a new instance of iterator that returns rowbatch by default, a in-memory based iterator will be returned <a href="classdmlc_1_1RowBlockIter.html#a1784cad30bd954853a62ab778a078849">More...</a><br /></td></tr> |
| <tr class="separator:a1784cad30bd954853a62ab778a078849"><td class="memSeparator" colspan="2"> </td></tr> |
| </table> |
| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><h3>template<typename IndexType, typename DType = real_t><br /> |
| class dmlc::RowBlockIter< IndexType, DType ></h3> |
| |
| <p>Data structure that holds the data <a class="el" href="classdmlc_1_1Row.html" title="one row of training instance">Row</a> block iterator interface that gets RowBlocks Difference between <a class="el" href="classdmlc_1_1RowBlockIter.html" title="Data structure that holds the data Row block iterator interface that gets RowBlocks Difference betwee...">RowBlockIter</a> and <a class="el" href="classdmlc_1_1Parser.html" title="parser interface that parses input data used to load dmlc data format into your own data format Diffe...">Parser</a>: <a class="el" href="classdmlc_1_1RowBlockIter.html" title="Data structure that holds the data Row block iterator interface that gets RowBlocks Difference betwee...">RowBlockIter</a> caches the data internally that can be used to iterate the dataset multiple times, <a class="el" href="classdmlc_1_1Parser.html" title="parser interface that parses input data used to load dmlc data format into your own data format Diffe...">Parser</a> holds very limited internal state and was usually used to read data only once. </p> |
| <dl class="section see"><dt>See also</dt><dd><a class="el" href="classdmlc_1_1Parser.html" title="parser interface that parses input data used to load dmlc data format into your own data format Diffe...">Parser</a> </dd></dl> |
| <dl class="tparams"><dt>Template Parameters</dt><dd> |
| <table class="tparams"> |
| <tr><td class="paramname">IndexType</td><td>type of index in <a class="el" href="structdmlc_1_1RowBlock.html" title="a block of data, containing several rows in sparse matrix This is useful for (streaming-sxtyle) algor...">RowBlock</a> </td></tr> |
| <tr><td class="paramname">DType</td><td>type of label and value in <a class="el" href="structdmlc_1_1RowBlock.html" title="a block of data, containing several rows in sparse matrix This is useful for (streaming-sxtyle) algor...">RowBlock</a> Create function was only implemented for IndexType uint64_t and uint32_t and DType real_t and int </td></tr> |
| </table> |
| </dd> |
| </dl> |
| </div><h2 class="groupheader">Member Function Documentation</h2> |
| <a id="a1784cad30bd954853a62ab778a078849"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a1784cad30bd954853a62ab778a078849">◆ </a></span>Create()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <div class="memtemplate"> |
| template<typename IndexType , typename DType = real_t> </div> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">static <a class="el" href="classdmlc_1_1RowBlockIter.html">RowBlockIter</a><IndexType, DType>* <a class="el" href="classdmlc_1_1RowBlockIter.html">dmlc::RowBlockIter</a>< IndexType, DType >::Create </td> |
| <td>(</td> |
| <td class="paramtype">const char * </td> |
| <td class="paramname"><em>uri</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">unsigned </td> |
| <td class="paramname"><em>part_index</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">unsigned </td> |
| <td class="paramname"><em>num_parts</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">const char * </td> |
| <td class="paramname"><em>type</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">static</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>create a new instance of iterator that returns rowbatch by default, a in-memory based iterator will be returned </p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">uri</td><td>the uri of the input, can contain hdfs prefix </td></tr> |
| <tr><td class="paramname">part_index</td><td>the part id of current input </td></tr> |
| <tr><td class="paramname">num_parts</td><td>total number of splits </td></tr> |
| <tr><td class="paramname">type</td><td>type of dataset can be: "libsvm", ...</td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>the created data iterator </dd></dl> |
| |
| </div> |
| </div> |
| <a id="aa4456f0212e0d8c06e444a31aca0515e"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#aa4456f0212e0d8c06e444a31aca0515e">◆ </a></span>NumCol()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <div class="memtemplate"> |
| template<typename IndexType , typename DType = real_t> </div> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">virtual size_t <a class="el" href="classdmlc_1_1RowBlockIter.html">dmlc::RowBlockIter</a>< IndexType, DType >::NumCol </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td> const</td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">pure virtual</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <dl class="section return"><dt>Returns</dt><dd>maximum feature dimension in the dataset </dd></dl> |
| |
| </div> |
| </div> |
| <hr/>The documentation for this class was generated from the following file:<ul> |
| <li>/work/mxnet/3rdparty/dmlc-core/include/dmlc/<a class="el" href="data_8h_source.html">data.h</a></li> |
| </ul> |
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