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arm_svm_example_f32_8c-example.html

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  111. <div class="title">arm_svm_example_f32.c</div>  </div>
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    113. 

  113. <div class="contents">
    114. 

  114. <div class="fragment"><div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
    115. 

  115. <div class="line"><span class="comment">* Copyright (C) 2019-2020 ARM Limited. All rights reserved.</span></div>
    116. 

  116. <div class="line"><span class="comment">*</span></div>
    117. 

  117. <div class="line"><span class="comment">* $Date:         09. December 2019</span></div>
    118. 

  118. <div class="line"><span class="comment">* $Revision:     V1.0.0</span></div>
    119. 

  119. <div class="line"><span class="comment">*</span></div>
    120. 

  120. <div class="line"><span class="comment">* Project:       CMSIS DSP Library</span></div>
    121. 

  121. <div class="line"><span class="comment">* Title:         arm_svm_example_f32.c</span></div>
    122. 

  122. <div class="line"><span class="comment">*</span></div>
    123. 

  123. <div class="line"><span class="comment">* Description:   Example code demonstrating how to use SVM functions.</span></div>
    124. 

  124. <div class="line"><span class="comment">*</span></div>
    125. 

  125. <div class="line"><span class="comment">* Target Processor: Cortex-M/Cortex-A</span></div>
    126. 

  126. <div class="line"><span class="comment">*</span></div>
    127. 

  127. <div class="line"><span class="comment">* Redistribution and use in source and binary forms, with or without</span></div>
    128. 

  128. <div class="line"><span class="comment">* modification, are permitted provided that the following conditions</span></div>
    129. 

  129. <div class="line"><span class="comment">* are met:</span></div>
    130. 

  130. <div class="line"><span class="comment">*   - Redistributions of source code must retain the above copyright</span></div>
    131. 

  131. <div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer.</span></div>
    132. 

  132. <div class="line"><span class="comment">*   - Redistributions in binary form must reproduce the above copyright</span></div>
    133. 

  133. <div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer in</span></div>
    134. 

  134. <div class="line"><span class="comment">*     the documentation and/or other materials provided with the</span></div>
    135. 

  135. <div class="line"><span class="comment">*     distribution.</span></div>
    136. 

  136. <div class="line"><span class="comment">*   - Neither the name of ARM LIMITED nor the names of its contributors</span></div>
    137. 

  137. <div class="line"><span class="comment">*     may be used to endorse or promote products derived from this</span></div>
    138. 

  138. <div class="line"><span class="comment">*     software without specific prior written permission.</span></div>
    139. 

  139. <div class="line"><span class="comment">*</span></div>
    140. 

  140. <div class="line"><span class="comment">* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
    141. 

  141. <div class="line"><span class="comment">* &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
    142. 

  142. <div class="line"><span class="comment">* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
    143. 

  143. <div class="line"><span class="comment">* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE</span></div>
    144. 

  144. <div class="line"><span class="comment">* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,</span></div>
    145. 

  145. <div class="line"><span class="comment">* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span></div>
    146. 

  146. <div class="line"><span class="comment">* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;</span></div>
    147. 

  147. <div class="line"><span class="comment">* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</span></div>
    148. 

  148. <div class="line"><span class="comment">* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div>
    149. 

  149. <div class="line"><span class="comment">* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN</span></div>
    150. 

  150. <div class="line"><span class="comment">* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
    151. 

  151. <div class="line"><span class="comment">* POSSIBILITY OF SUCH DAMAGE.</span></div>
    152. 

  152. <div class="line"><span class="comment">* -------------------------------------------------------------------- */</span></div>
    153. 

  153. <div class="line"></div>
    154. 

  154. <div class="line"><span class="preprocessor">#include &lt;math.h&gt;</span></div>
    155. 

  155. <div class="line"><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
    156. 

  156. <div class="line"><span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span></div>
    157. 

  157. <div class="line"></div>
    158. 

  158. <div class="line"><span class="comment">/* </span></div>
    159. 

  159. <div class="line"><span class="comment">  The polynomial SVM instance containing all parameters.</span></div>
    160. 

  160. <div class="line"><span class="comment">  Those parameters can be generated with the python library scikit-learn.</span></div>
    161. 

  161. <div class="line"><span class="comment"> */</span></div>
    162. 

  162. <div class="line"><a name="_a0"></a><a class="code" href="structarm__svm__polynomial__instance__f32.html">arm_svm_polynomial_instance_f32</a> <a name="a1"></a><a class="code" href="arm__svm__example__f32_8c.html#a1510c63c4febec3a2a58a2397e2b738d">params</a>;</div>
    163. 

  163. <div class="line"></div>
    164. 

  164. <div class="line"><span class="comment">/*</span></div>
    165. 

  165. <div class="line"><span class="comment">  Parameters generated by a training of the SVM classifier</span></div>
    166. 

  166. <div class="line"><span class="comment">  using scikit-learn and some random input data.</span></div>
    167. 

  167. <div class="line"><span class="comment"> */</span></div>
    168. 

  168. <div class="line"><span class="preprocessor">#define NB_SUPPORT_VECTORS 11</span></div>
    169. 

  169. <div class="line"><span class="preprocessor"></span></div>
    170. 

  170. <div class="line"><span class="comment">/*</span></div>
    171. 

  171. <div class="line"><span class="comment">  Dimension of the vector space. A vector is your feature.</span></div>
    172. 

  172. <div class="line"><span class="comment">  It could, for instance, be the pixels of a picture or the FFT of a signal.</span></div>
    173. 

  173. <div class="line"><span class="comment"> */</span></div>
    174. 

  174. <div class="line"><span class="preprocessor">#define VECTOR_DIMENSION 2</span></div>
    175. 

  175. <div class="line"><span class="preprocessor"></span></div>
    176. 

  176. <div class="line"><span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a2"></a><a class="code" href="arm__svm__example__f32_8c.html#a6bee216b9b7e7b8d18687cd692e26a8a">dualCoefficients</a>[<a name="a3"></a><a class="code" href="arm__svm__example__f32_8c.html#a991d9a139527d1a747541de078ca21c7">NB_SUPPORT_VECTORS</a>]={-0.01628988f, -0.0971605f,</div>
    177. 

  177. <div class="line">  -0.02707579f,  0.0249406f,   0.00223095f,  0.04117345f,</div>
    178. 

  178. <div class="line">  0.0262687f,   0.00800358f,  0.00581823f,  0.02346904f,  0.00862162f}; <span class="comment">/* Dual coefficients */</span></div>
    179. 

  179. <div class="line"></div>
    180. 

  180. <div class="line"><span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a4"></a><a class="code" href="arm__svm__example__f32_8c.html#ac636d66272348052cde1083e5a0c3c60">supportVectors</a>[<a class="code" href="arm__svm__example__f32_8c.html#a991d9a139527d1a747541de078ca21c7">NB_SUPPORT_VECTORS</a>*<a name="a5"></a><a class="code" href="arm__svm__example__f32_8c.html#a98d2e2076140b796ee1cb5f3e77248a7">VECTOR_DIMENSION</a>]={ 1.2510991f,   0.47782799f,</div>
    181. 

  181. <div class="line"> -0.32711859f, -1.49880648f, -0.08905047f,  1.31907242f,</div>
    182. 

  182. <div class="line">  1.14059333f,  2.63443767f, -2.62561524f,  1.02120701f,</div>
    183. 

  183. <div class="line"> -1.2361353f,  -2.53145187f,</div>
    184. 

  184. <div class="line">  2.28308122f, -1.58185875f,  2.73955981f,  0.35759327f,</div>
    185. 

  185. <div class="line">  0.56662986f,  2.79702016f,</div>
    186. 

  186. <div class="line"> -2.51380816f,  1.29295364f, -0.56658669f, -2.81944734f}; <span class="comment">/* Support vectors */</span></div>
    187. 

  187. <div class="line"></div>
    188. 

  188. <div class="line"><span class="comment">/*</span></div>
    189. 

  189. <div class="line"><span class="comment">  Class A is identified with value 0.</span></div>
    190. 

  190. <div class="line"><span class="comment">  Class B is identified with value 1.</span></div>
    191. 

  191. <div class="line"><span class="comment">  </span></div>
    192. 

  192. <div class="line"><span class="comment">  This array is used by the SVM functions to do a conversion and ease the comparison</span></div>
    193. 

  193. <div class="line"><span class="comment">  with the Python code where different values could be used.</span></div>
    194. 

  194. <div class="line"><span class="comment"> */</span></div>
    195. 

  195. <div class="line"><span class="keyword">const</span> int32_t   <a name="a6"></a><a class="code" href="arm__svm__example__f32_8c.html#ae76f66a144055c576e6895e411417b63">classes</a>[2]={0,1};</div>
    196. 

  196. <div class="line"></div>
    197. 

  197. <div class="line"></div>
    198. 

  198. <div class="line">int32_t <a name="a7"></a><a class="code" href="arm__svm__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main</a>(<span class="keywordtype">void</span>)</div>
    199. 

  199. <div class="line">{</div>
    200. 

  200. <div class="line">  <span class="comment">/* Array of input data */</span></div>
    201. 

  201. <div class="line">  <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> in[<a class="code" href="arm__svm__example__f32_8c.html#a98d2e2076140b796ee1cb5f3e77248a7">VECTOR_DIMENSION</a>];</div>
    202. 

  202. <div class="line"></div>
    203. 

  203. <div class="line">  <span class="comment">/* Result of the classifier */</span></div>
    204. 

  204. <div class="line">  int32_t result;</div>
    205. 

  205. <div class="line">  </div>
    206. 

  206. <div class="line"></div>
    207. 

  207. <div class="line">  <span class="comment">/*</span></div>
    208. 

  208. <div class="line"><span class="comment">    Initialization of the SVM instance parameters.</span></div>
    209. 

  209. <div class="line"><span class="comment">    Additional parameters (intercept, degree, coef0 and gamma) are also coming from Python.</span></div>
    210. 

  210. <div class="line"><span class="comment">   */</span></div>
    211. 

  211. <div class="line">  <a name="a8"></a><a class="code" href="group__groupSVM.html#gad004464aae8fdecfc985a02a0de6b0af">arm_svm_polynomial_init_f32</a>(&amp;params,</div>
    212. 

  212. <div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#a991d9a139527d1a747541de078ca21c7">NB_SUPPORT_VECTORS</a>,</div>
    213. 

  213. <div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#a98d2e2076140b796ee1cb5f3e77248a7">VECTOR_DIMENSION</a>,</div>
    214. 

  214. <div class="line">    -1.661719f,        <span class="comment">/* Intercept */</span></div>
    215. 

  215. <div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#a6bee216b9b7e7b8d18687cd692e26a8a">dualCoefficients</a>,</div>
    216. 

  216. <div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#ac636d66272348052cde1083e5a0c3c60">supportVectors</a>,</div>
    217. 

  217. <div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#ae76f66a144055c576e6895e411417b63">classes</a>,</div>
    218. 

  218. <div class="line">    3,                 <span class="comment">/* degree */</span></div>
    219. 

  219. <div class="line">    1.100000f,         <span class="comment">/* Coef0 */</span></div>
    220. 

  220. <div class="line">    0.500000f          <span class="comment">/* Gamma */</span></div>
    221. 

  221. <div class="line">  );</div>
    222. 

  222. <div class="line"></div>
    223. 

  223. <div class="line"></div>
    224. 

  224. <div class="line">  <span class="comment">/*</span></div>
    225. 

  225. <div class="line"><span class="comment">    Input data.</span></div>
    226. 

  226. <div class="line"><span class="comment">    It is corresponding to a point inside the first class.</span></div>
    227. 

  227. <div class="line"><span class="comment">   */</span></div>
    228. 

  228. <div class="line">  in[0] = 0.4f;</div>
    229. 

  229. <div class="line">  in[1] = 0.1f;</div>
    230. 

  230. <div class="line"></div>
    231. 

  231. <div class="line">  <a name="a9"></a><a class="code" href="group__groupSVM.html#ga5719f32544ecc1b568aaba7f5d237df8">arm_svm_polynomial_predict_f32</a>(&amp;params, in, &amp;result);</div>
    232. 

  232. <div class="line"></div>
    233. 

  233. <div class="line">  <span class="comment">/* Result should be 0 : First class */</span></div>
    234. 

  234. <div class="line"><span class="preprocessor">#if defined(SEMIHOSTING)</span></div>
    235. 

  235. <div class="line"><span class="preprocessor"></span>  printf(<span class="stringliteral">&quot;Result = %d\n&quot;</span>, result);</div>
    236. 

  236. <div class="line"><span class="preprocessor">#endif</span></div>
    237. 

  237. <div class="line"><span class="preprocessor"></span></div>
    238. 

  238. <div class="line">  <span class="comment">/*</span></div>
    239. 

  239. <div class="line"><span class="comment">    This input vector is corresponding to a point inside the second class.</span></div>
    240. 

  240. <div class="line"><span class="comment">   */</span></div>
    241. 

  241. <div class="line">  in[0] = 3.0f;</div>
    242. 

  242. <div class="line">  in[1] = 0.0f;</div>
    243. 

  243. <div class="line"></div>
    244. 

  244. <div class="line">  <a class="code" href="group__groupSVM.html#ga5719f32544ecc1b568aaba7f5d237df8">arm_svm_polynomial_predict_f32</a>(&amp;params, in, &amp;result);</div>
    245. 

  245. <div class="line">  </div>
    246. 

  246. <div class="line">  <span class="comment">/* Result should be 1 : Second class */</span></div>
    247. 

  247. <div class="line"><span class="preprocessor">#if defined(SEMIHOSTING)</span></div>
    248. 

  248. <div class="line"><span class="preprocessor"></span>  printf(<span class="stringliteral">&quot;Result = %d\n&quot;</span>, result);</div>
    249. 

  249. <div class="line"><span class="preprocessor">#endif</span></div>
    250. 

  250. <div class="line"><span class="preprocessor"></span></div>
    251. 

  251. <div class="line"><span class="preprocessor">#if !defined(SEMIHOSTING)</span></div>
    252. 

  252. <div class="line"><span class="preprocessor"></span>  <span class="keywordflow">while</span> (1); <span class="comment">/* main function does not return */</span></div>
    253. 

  253. <div class="line"><span class="preprocessor">#endif</span></div>
    254. 

  254. <div class="line"><span class="preprocessor"></span>}</div>
    255. 

  255. <div class="line"></div>
    256. 

  256. <div class="line"></div>
    257. 

  257. <div class="line"></div>
    258. 

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    259. 

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    260. 

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