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<div class="title">als.hpp</div> </div>
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<a href="als_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#ifndef DEF_ALSHPP</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span><span class="preprocessor">#define DEF_ALSHPP</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <assert.h></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <cmath></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <errno.h></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <string></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <stdint.h></span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#include "matrixmarket/mmio.h"</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#include "matrixmarket/mmio.c"</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include "<a class="code" href="chifilenames_8hpp.html">api/chifilenames.hpp</a>"</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "<a class="code" href="vertex__aggregator_8hpp.html">api/vertex_aggregator.hpp</a>"</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#include "<a class="code" href="sharder_8hpp.html">preprocessing/sharder.hpp</a>"</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// See note above about Eigen</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#include "Eigen/Dense"</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"></span><span class="preprocessor">#include "Eigen/Sparse"</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include "Eigen/Cholesky"</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#include "Eigen/Eigenvalues"</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#include "Eigen/SVD"</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">using namespace </span>Eigen;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">typedef</span> MatrixXd mat;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">typedef</span> VectorXd <a class="code" href="structvec.html">vec</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">typedef</span> VectorXi ivec;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">typedef</span> MatrixXi imat;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">typedef</span> SparseVector<double> sparse_vec;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">using namespace </span>graphchi;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor">#ifndef NLATENT</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor"></span><span class="preprocessor">#define NLATENT 5 // Dimension of the latent factors. You can specify this in compile time as well (in make).</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keywordtype">double</span> LAMBDA = 0.065;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="code" href="als_8hpp.html#a4a31cf557efa8c68c5c0a73a5405ba3f"> 74</a></span> <span class="keywordtype">double</span> <a class="code" href="als_8hpp.html#a4a31cf557efa8c68c5c0a73a5405ba3f" title="RMSE computation.">rmse</a>=0.0;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <a class="code" href="classgraphchi_1_1mutex.html">mutex</a> rmselock;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// Hackish: we need to count the number of left</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">// and right vertices in the bipartite graph ourselves.</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> vid_t max_left_vertex =0 ;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> vid_t max_right_vertex = 0;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"><a class="code" href="structlatentvec__t.html"> 83</a></span> <span class="keyword">struct </span><a class="code" href="structlatentvec__t.html">latentvec_t</a> {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">double</span> d[NLATENT];</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="structlatentvec__t.html">latentvec_t</a>() {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">void</span> init() {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> k=0; k < NLATENT; k++) d[k] = 0.001 * (std::rand() % 1000); </div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">double</span> & operator[] (<span class="keywordtype">int</span> idx) {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> d[idx];</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="structlatentvec__t.html">latentvec_t</a> &oth)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i<NLATENT; i++) { <span class="keywordflow">if</span> (d[i] != oth.d[i]) <span class="keywordflow">return</span> <span class="keyword">true</span>; }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">double</span> dot(<a class="code" href="structlatentvec__t.html">latentvec_t</a> &oth)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">double</span> x=0;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i<NLATENT; i++) x+= oth.d[i]*d[i];</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> x;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> };</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"><a class="code" href="structals__factor__and__weight.html"> 111</a></span> <span class="keyword">struct </span><a class="code" href="structals__factor__and__weight.html">als_factor_and_weight</a> {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="structlatentvec__t.html">latentvec_t</a> factor;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">float</span> weight;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="structals__factor__and__weight.html">als_factor_and_weight</a>() {}</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <a class="code" href="structals__factor__and__weight.html">als_factor_and_weight</a>(<span class="keywordtype">float</span> obs) {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  weight = obs;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  factor.init();</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> };</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keyword">template</span> <<span class="keyword">typename</span> als_edge_type></div>
<div class="line"><a name="l00131"></a><span class="lineno"><a class="code" href="als_8hpp.html#aac24c18c19a226199f0b86cabb8ad63d"> 131</a></span> <span class="keywordtype">int</span> <a class="code" href="als_8hpp.html#aac24c18c19a226199f0b86cabb8ad63d">convert_matrixmarket_for_ALS</a>(std::string base_filename) {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// Note, code based on: http://math.nist.gov/MatrixMarket/mmio/c/example_read.c</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordtype">int</span> ret_code;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  MM_typecode matcode;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  FILE *f;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordtype">int</span> M, N, nz; </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordtype">int</span> nshards;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">if</span> ((nshards = find_shards<als_edge_type>(base_filename, get_option_string(<span class="stringliteral">"nshards"</span>, <span class="stringliteral">"auto"</span>)))) {</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) << <span class="stringliteral">"File "</span> << base_filename << <span class="stringliteral">" was already preprocessed, won't do it again. "</span> << std::endl;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) << <span class="stringliteral">"If this is not intended, please delete the shard files and try again. "</span> << std::endl;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> nshards;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  } </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="classgraphchi_1_1sharder.html">sharder<als_edge_type></a> sharderobj(base_filename);</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  sharderobj.<a class="code" href="classgraphchi_1_1sharder.html#ac867bb6b0f8e420f790b60f2c18f2a6b">start_preprocessing</a>();</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">if</span> ((f = fopen(base_filename.c_str(), <span class="stringliteral">"r"</span>)) == NULL) {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"Could not open file: "</span> << base_filename << <span class="stringliteral">", error: "</span> << strerror(errno) << std::endl;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  exit(1);</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  }</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (mm_read_banner(f, &matcode) != 0)</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  {</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"Could not process Matrix Market banner. File: "</span> << base_filename << std::endl;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"Matrix must be in the Matrix Market format. "</span> << std::endl;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  exit(1);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">/* This is how one can screen matrix types if their application */</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">/* only supports a subset of the Matrix Market data types. */</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> (mm_is_complex(matcode) || !mm_is_sparse(matcode))</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  {</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"Sorry, this application does not support complex values and requires a sparse matrix."</span> << std::endl;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"Market Market type: "</span> << mm_typecode_to_str(matcode) << std::endl;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  exit(1);</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">/* find out size of sparse matrix .... */</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">if</span> ((ret_code = mm_read_mtx_crd_size(f, &M, &N, &nz)) !=0) {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"Failed reading matrix size: error="</span> << ret_code << std::endl;</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  exit(1);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) << <span class="stringliteral">"Starting to read matrix-market input. Matrix dimensions: "</span> </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  << M << <span class="stringliteral">" x "</span> << N << <span class="stringliteral">", non-zeros: "</span> << nz << std::endl;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">if</span> (M < 5 || N < 5 || nz < 10) {</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) << <span class="stringliteral">"File is suspiciously small. Something wrong? File: "</span> << base_filename << std::endl;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  assert(M < 5 || N < 5 || nz < 10);</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  } </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</span> (!sharderobj.<a class="code" href="classgraphchi_1_1sharder.html#a9473263ad2cfc83c11100e7cf253e10c">preprocessed_file_exists</a>()) {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<nz; i++)</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordtype">int</span> I, J;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordtype">double</span> val;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  fscanf(f, <span class="stringliteral">"%d %d %lg\n"</span>, &I, &J, &val);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  I--; <span class="comment">/* adjust from 1-based to 0-based */</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  J--;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  sharderobj.<a class="code" href="classgraphchi_1_1sharder.html#ad902ff8fdee18b7eb5193fabd25d8d49">preprocessing_add_edge</a>(I, M + J, als_edge_type((<span class="keywordtype">float</span>)val));</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  sharderobj.<a class="code" href="classgraphchi_1_1sharder.html#aebb6e75ba00e4f4016b9559e45254142">end_preprocessing</a>();</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  </div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) << <span class="stringliteral">"Matrix already preprocessed, just run sharder."</span> << std::endl;</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  }</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">if</span> (f !=stdin) fclose(f);</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) << <span class="stringliteral">"Now creating shards."</span> << std::endl;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="comment">// Shard with a specified number of shards, or determine automatically if not defined</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  nshards = sharderobj.<a class="code" href="classgraphchi_1_1sharder.html#a8c1af4eca3037578aa7bd5b7cc431c8c">execute_sharding</a>(get_option_string(<span class="stringliteral">"nshards"</span>, <span class="stringliteral">"auto"</span>));</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">return</span> nshards;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> }</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
<div class="line"><a name="l00220"></a><span class="lineno"><a class="code" href="struct_m_m_outputter.html"> 220</a></span> <span class="keyword">struct </span><a class="code" href="struct_m_m_outputter.html">MMOutputter</a> : <span class="keyword">public</span> <a class="code" href="classgraphchi_1_1_v_callback.html">VCallback</a><latentvec_t> {</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  FILE * outf;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <a class="code" href="struct_m_m_outputter.html">MMOutputter</a>(std::string fname, vid_t nvertices) {</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  MM_typecode matcode;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  mm_initialize_typecode(&matcode);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  mm_set_matrix(&matcode);</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  mm_set_array(&matcode);</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  mm_set_real(&matcode);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  outf = fopen(fname.c_str(), <span class="stringliteral">"w"</span>);</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  assert(outf != NULL);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  mm_write_banner(outf, matcode);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  mm_write_mtx_array_size(outf, NLATENT, nvertices); <span class="comment">// Column major</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  </div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordtype">void</span> callback(vid_t vertex_id, <a class="code" href="structlatentvec__t.html">latentvec_t</a> &<a class="code" href="structvec.html">vec</a>) {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < NLATENT; i++) {</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  fprintf(outf, <span class="stringliteral">"%lf\n"</span>, vec.d[i]);</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  </div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  ~<a class="code" href="struct_m_m_outputter.html">MMOutputter</a>() {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> (outf != NULL) fclose(outf);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> };</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="keywordtype">void</span> output_als_result(std::string filename, vid_t numvertices, vid_t max_left_vertex) {</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <a class="code" href="struct_m_m_outputter.html">MMOutputter</a> mmoutput_left(filename + <span class="stringliteral">"_U.mm"</span>, max_left_vertex + 1);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  foreach_vertices<latentvec_t>(filename, 0, max_left_vertex + 1, mmoutput_left);</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  </div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  </div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="struct_m_m_outputter.html">MMOutputter</a> mmoutput_right(filename + <span class="stringliteral">"_V.mm"</span>, numvertices - max_left_vertex - 1);</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  foreach_vertices<latentvec_t>(filename, max_left_vertex + 1, numvertices, mmoutput_right);</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) << <span class="stringliteral">"ALS output files (in matrix market format): "</span> << filename + <span class="stringliteral">"_U.mm"</span> <<</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="stringliteral">", "</span> << filename + <span class="stringliteral">"_V.mm"</span> << std::endl;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> }</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="preprocessor">#endif</span></div>
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