/** tests {@link ToVectorAndPrefReducer} */
@Test
public void testToVectorAndPrefReducer() throws Exception {
Reducer<VarIntWritable, VectorOrPrefWritable, VarIntWritable, VectorAndPrefsWritable>.Context
context = EasyMock.createMock(Reducer.Context.class);
context.write(
EasyMock.eq(new VarIntWritable(1)),
vectorAndPrefsWritableMatches(
Arrays.asList(123L, 456L),
Arrays.asList(1.0f, 2.0f),
MathHelper.elem(3, 0.5),
MathHelper.elem(7, 0.8)));
EasyMock.replay(context);
Vector similarityColumn = new RandomAccessSparseVector(Integer.MAX_VALUE, 100);
similarityColumn.set(3, 0.5);
similarityColumn.set(7, 0.8);
VectorOrPrefWritable itemPref1 = new VectorOrPrefWritable(123L, 1.0f);
VectorOrPrefWritable itemPref2 = new VectorOrPrefWritable(456L, 2.0f);
VectorOrPrefWritable similarities = new VectorOrPrefWritable(similarityColumn);
new ToVectorAndPrefReducer()
.reduce(new VarIntWritable(1), Arrays.asList(itemPref1, itemPref2, similarities), context);
EasyMock.verify(context);
}
/** tests {@link ToUserVectorReducer} using boolean data */
@Test
public void testToUserVectorReducerWithBooleanData() throws Exception {
Reducer<VarLongWritable, VarLongWritable, VarLongWritable, VectorWritable>.Context context =
EasyMock.createMock(Reducer.Context.class);
context.write(
EasyMock.eq(new VarLongWritable(12L)),
MathHelper.vectorMatches(
MathHelper.elem(TasteHadoopUtils.idToIndex(34L), 1.0),
MathHelper.elem(TasteHadoopUtils.idToIndex(56L), 1.0)));
EasyMock.replay(context);
new ToUserVectorReducer()
.reduce(
new VarLongWritable(12L),
Arrays.asList(new VarLongWritable(34L), new VarLongWritable(56L)),
context);
EasyMock.verify(context);
}
/** tests {@link SimilarityMatrixRowWrapperMapper} */
@Test
public void testSimilarityMatrixRowWrapperMapper() throws Exception {
Mapper<IntWritable, VectorWritable, VarIntWritable, VectorOrPrefWritable>.Context context =
EasyMock.createMock(Mapper.Context.class);
context.write(
EasyMock.eq(new VarIntWritable(12)),
vectorOfVectorOrPrefWritableMatches(MathHelper.elem(34, 0.5), MathHelper.elem(56, 0.7)));
EasyMock.replay(context);
RandomAccessSparseVector vector = new RandomAccessSparseVector(Integer.MAX_VALUE, 100);
vector.set(12, 1.0);
vector.set(34, 0.5);
vector.set(56, 0.7);
new SimilarityMatrixRowWrapperMapper()
.map(new IntWritable(12), new VectorWritable(vector), context);
EasyMock.verify(context);
}
/** tests {@link ToUserVectorReducer} */
@Test
public void testToUserVectorReducer() throws Exception {
Reducer<VarLongWritable, VarLongWritable, VarLongWritable, VectorWritable>.Context context =
EasyMock.createMock(Reducer.Context.class);
context.write(
EasyMock.eq(new VarLongWritable(12L)),
MathHelper.vectorMatches(
MathHelper.elem(TasteHadoopUtils.idToIndex(34L), 1.0),
MathHelper.elem(TasteHadoopUtils.idToIndex(56L), 2.0)));
EasyMock.replay(context);
Collection<VarLongWritable> varLongWritables = new LinkedList<VarLongWritable>();
varLongWritables.add(new EntityPrefWritable(34L, 1.0f));
varLongWritables.add(new EntityPrefWritable(56L, 2.0f));
new ToUserVectorReducer().reduce(new VarLongWritable(12L), varLongWritables, context);
EasyMock.verify(context);
}