>dfB</dt><dd class="cmt"><p>is second dataframe</p></dd><dt>returns</dt><dd class="cmt"><p>it return a dataframe with four columns two for the uri columns and two for the feature vector. the size is approx the product of both dataframe sizes</p></dd></dl><dl class="attributes block"> <dt>Attributes</dt><dd>protected </dd><dt>Definition Classes</dt><dd><a href="GenericSimilarityEstimatorModel.html" class="extype" name="net.sansa_stack.ml.spark.similarity.similarityEstimationModels.GenericSimilarityEstimatorM