Package cc.mallet.types

Examples of cc.mallet.types.HashedSparseVector

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    }
  }
 
  public void testPlusEquals ()
  {
    HashedSparseVector s = (HashedSparseVector) s1.cloneMatrix ();
    s.plusEqualsSparse (s2, 2.0);
    checkAnswer (s, new double[] { 3, 5, 7, 6, 7 });

    HashedSparseVector s2p = new HashedSparseVector
                       (new int[] { 13 },
                        new double[] { 0.8 });
    s.plusEqualsSparse (s2p, 1.0);
    checkAnswer (s, new double[] { 3, 5, 7, 6.8, 7 });

    HashedSparseVector s3p = new HashedSparseVector
                       (new int[] { 14 },
                        new double[] { 0.8 });
    s.plusEqualsSparse (s3p, 1.0);
    checkAnswer (s, new double[] { 3, 5, 7, 6.8, 7 });     // verify s unchanged

    HashedSparseVector s4 = new HashedSparseVector
                      (new int[] { 7, 14, 15 },
                       new double[] { 0.2, 0.8, 1.2 });
    s.plusEqualsSparse (s4, 1.0);
    checkAnswer (s, new double[] { 3, 5, 7.2, 6.8, 8.2 }); 

    HashedSparseVector s5 = new HashedSparseVector (new int[] { 7 }, new double[] { 0.2 });
    s5.plusEqualsSparse (s1);
    for (int i = 0; i < s5.numLocations(); i++) {
      assertEquals (7, s5.indexAtLocation (i));
      assertEquals (3.2, s5.valueAtLocation (i), 0.0);
    }

    HashedSparseVector s6 = new HashedSparseVector (new int[] { 7 }, new double[] { 0.2 });
    s6.plusEqualsSparse (s1, 3.5);
    for (int i = 0; i < s6.numLocations(); i++) {
      assertEquals (7, s6.indexAtLocation (i));
      assertEquals (10.7, s6.valueAtLocation (i), 0.0);
    }
  }
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  }

  public void testPlusEqualsAfterClone ()
  {
    s1.indexVector ();
    HashedSparseVector s = (HashedSparseVector) s1.cloneMatrixZeroed ();
    s.plusEqualsSparse (s1);
    s.plusEqualsSparse (s2, 2.0);
    checkAnswer (s, new double[] { 3, 5, 7, 6, 7 });
  }
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    s.plusEqualsSparse (s2, 2.0);
    checkAnswer (s, new double[] { 3, 5, 7, 6, 7 });
  }

  public void testDotProduct () {
    HashedSparseVector t1 = new HashedSparseVector (new int[] { 7 }, new double[] { 0.2 });
    assertEquals (0.6, t1.dotProduct (s1), 0.00001);
    assertEquals (0.6, s1.dotProduct (t1), 0.00001);
   
    assertEquals (19.0, s1.dotProduct (s2), 0.00001);
    assertEquals (19.0, s2.dotProduct (s1), 0.00001);
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    assertEquals (10.1, s2.dotProduct (d1), 0.00001);
  }

  public void testIncrementValue ()
  {
    HashedSparseVector s = (HashedSparseVector) s1.cloneMatrix ();
    s.incrementValue (5, 0.75);

    double[] ans = new double[] {1, 2.75, 3, 4, 5};
    for (int i = 0; i < s.numLocations(); i++) {
      assertTrue (s.valueAtLocation (i) == ans[i]);
    }
  }
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  }

 
  public void testSetValue ()
  {
    HashedSparseVector s = (HashedSparseVector) s1.cloneMatrix ();
    s.setValue (5, 0.3);

    double[] ans = new double[] {1, 0.3, 3, 4, 5};
    for (int i = 0; i < s.numLocations(); i++) {
      assertTrue (s.valueAtLocation (i) == ans[i]);
    }
  }
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  private static int[] idx2 = { 3, 7, 12, 15, 18 };

  public void testBinaryVector ()
  {
    HashedSparseVector binary1 = new HashedSparseVector (idxs, null, idxs.length, idxs.length,
                                             false, false, false);
    HashedSparseVector binary2 = new HashedSparseVector (idx2, null, idx2.length, idx2.length,
                                            false, false, false);

    assertEquals (3, binary1.dotProduct (binary2), 0.0001);
    assertEquals (3, binary2.dotProduct (binary1), 0.0001);

    assertEquals (15.0, binary1.dotProduct (s1), 0.0001);
    assertEquals (15.0, s1.dotProduct (binary1), 0.0001);

    assertEquals (9.0, binary2.dotProduct (s1), 0.0001);
    assertEquals (9.0, s1.dotProduct (binary2), 0.0001);

    HashedSparseVector dblVec = (HashedSparseVector) s1.cloneMatrix ();
    dblVec.plusEqualsSparse (binary1);
    checkAnswer (dblVec, new double[] { 2, 3, 4, 5, 6 });

    HashedSparseVector dblVec2 = (HashedSparseVector) s1.cloneMatrix ();
    dblVec2.plusEqualsSparse (binary2);
    checkAnswer (dblVec2, new double[] { 2, 2, 4, 4, 6 });
  }
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    checkAnswer (dblVec2, new double[] { 2, 2, 4, 4, 6 });
  }

  public void testCloneMatrixZeroed ()
  {
    HashedSparseVector s = (HashedSparseVector) s1.cloneMatrixZeroed ();
    for (int i = 0; i < s.numLocations(); i++) {
      assertTrue (s.valueAtLocation (i) == 0.0);
      assertTrue (s.indexAtLocation (i) == idxs [i]);
    }
  }
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  }

  public void testSerializable () throws Exception
  {
    // Write out the sparse vector s1
    HashedSparseVector s2 = (HashedSparseVector) TestSerializable.cloneViaSerialization (s1);
    assertEquals (s1.numLocations (), s2.numLocations ());
    for (int loc = 0; loc < s1.numLocations (); loc++) {
      assertEquals (s1.valueAtLocation (loc), s2.valueAtLocation (loc), 0.001);
    }
  }
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  }

  // tests index2location getting screwed up when old (v 1.3) instances are de-serialized
  public void testPlusEqualsFromSaved () throws IOException, ClassNotFoundException
  {
    HashedSparseVector s1 = (HashedSparseVector) FileUtils.readObject (oldSv);
    HashedSparseVector s2 = new HashedSparseVector (new int[] { 1 }, new double[] { 1.0 });

    s1.plusEqualsSparse (s2, 1.0);
    assertEquals (1.0, s1.value (0), 1e-5);
    assertEquals (0.0, s1.value (1), 1e-5);
  }
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  // This is a hashedSparseVector from cvs version 1.3.  It was saved by saveOldSv(), below.
  private static File oldSv = new File ("test/resources/edu/umass/cs/mallet/base/types/hashed.sv.old.ser");

  public static void saveOldSv ()
  {
    HashedSparseVector sv = new HashedSparseVector (new int[] { 0, 2 }, new double[] { 1.0, 2.0 });
    sv.indexVector ();
    FileUtils.writeObject (oldSv, sv);
  }
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Related Classes of cc.mallet.types.HashedSparseVector

  • cc.mallet.types.tests.TestHashedSparseVector
  • gnu.trove.TIntIntHashMap
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