code: public void apply(InMemoryLookupTable table) {
          for (Map.Entry<Integer, Set<INDArray>> entry : changes.entrySet()) {
              Set<INDArray> changes = entry.getValue();
              INDArray toChange = table.getSyn0().slice(entry.getKey());
              for (INDArray syn1 : changes)
                  Nd4j.getBlasWrapper().level1().axpy(toChange.length(), 1, syn1, toChange);
          }
      }
docs: Take the changes and apply them
  to the given table
  @param table the memory lookup table
  to apply the changes to