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Fix example to print better output.

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This commit is contained in:
Ryan Curtin
2024-05-16 21:29:04 -04:00
parent c8838a81ea
commit 8300eb3c3d
1 changed files with 4 additions and 4 deletions
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doc/user/methods/sparse_coding.md
+4 -4
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@@ -13,15 +13,15 @@ dataset as a sparse combination of *atoms* in the dictionary.
arma::mat data(40, 100, arma::fill::randu);
arma::mat testData(40, 50, arma::fill::randu);
// Perform sparse coding with 20 atoms and an L1 penalty of 0.1.
mlpack::SparseCoding sc(20, 0.1); // Step 1: create object.
// Perform sparse coding with 20 atoms and an L1 penalty of 0.5.
mlpack::SparseCoding sc(20, 0.5); // Step 1: create object.
double objective = sc.Train(data); // Step 2: learn dictionary.
arma::mat codes;
sc.Encode(testData, codes); // Step 3: encode new data.
// Print some information about the test encoding.
std::cout << "Average sparsity of encoded test data: "
<< 100.0 * arma::mean(arma::sum(codes != 0)) / codes.n_elem << "\%."
std::cout << "Average density of encoded test data: "
<< 100.0 * arma::mean(arma::sum(codes != 0)) / codes.n_rows << "\%."
<< std::endl;
```
<p style="text-align: center; font-size: 85%"><a href="#simple-examples">More examples...</a></p>