Package org.apache.mahout.cf.taste.model

Examples of org.apache.mahout.cf.taste.model.PreferenceArray.sortByValue()

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    xPrefs = xPrefs.clone();
    yPrefs = yPrefs.clone();
   
    // First sort by values from low to high
    xPrefs.sortByValue();
    yPrefs.sortByValue();
   
    // Assign ranks from low to high
    float nextRank = 1.0f;
    for (int i = 0; i < xLength; i++) {
      // ... but only for items that are common to both pref arrays
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    xPrefs = xPrefs.clone();
    yPrefs = yPrefs.clone();
   
    // First sort by values from low to high
    xPrefs.sortByValue();
    yPrefs.sortByValue();
   
    // Assign ranks from low to high
    float nextRank = 1.0f;
    for (int i = 0; i < xLength; i++) {
      // ... but only for items that are common to both pref arrays
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  public void testSortValue() {
    PreferenceArray prefs = new GenericItemPreferenceArray(3);
    prefs.set(0, new GenericPreference(3L, 1L, 5.0f));
    prefs.set(1, new GenericPreference(1L, 1L, 4.0f));
    prefs.set(2, new GenericPreference(2L, 1L, 3.0f));
    prefs.sortByValue();
    assertEquals(2L, prefs.getUserID(0));
    assertEquals(1L, prefs.getUserID(1));
    assertEquals(3L, prefs.getUserID(2));
    prefs.sortByValueReversed();
    assertEquals(3L, prefs.getUserID(0));
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  public void testSortValue() {
    PreferenceArray prefs = new GenericUserPreferenceArray(3);
    prefs.set(0, new GenericPreference(1L, 3L, 5.0f));
    prefs.set(1, new GenericPreference(1L, 1L, 4.0f));
    prefs.set(2, new GenericPreference(1L, 2L, 3.0f));
    prefs.sortByValue();
    assertEquals(2L, prefs.getItemID(0));
    assertEquals(1L, prefs.getItemID(1));
    assertEquals(3L, prefs.getItemID(2));
    prefs.sortByValueReversed();
    assertEquals(3L, prefs.getItemID(0));
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    xPrefs = xPrefs.clone();
    yPrefs = yPrefs.clone();
   
    // First sort by values from low to high
    xPrefs.sortByValue();
    yPrefs.sortByValue();
   
    // Assign ranks from low to high
    float nextRank = 1.0f;
    for (int i = 0; i < xLength; i++) {
      // ... but only for items that are common to both pref arrays
View Full Code Here
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    xPrefs = xPrefs.clone();
    yPrefs = yPrefs.clone();

    // First sort by values from low to high
    xPrefs.sortByValue();
    yPrefs.sortByValue();

    // Assign ranks from low to high
    float nextRank = 1.0f;
    for (int i = 0; i < xLength; i++) {
      // ... but only for items that are common to both pref arrays
View Full Code Here
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    xPrefs = xPrefs.clone();
    yPrefs = yPrefs.clone();
   
    // First sort by values from low to high
    xPrefs.sortByValue();
    yPrefs.sortByValue();
   
    // Assign ranks from low to high
    float nextRank = 1.0f;
    for (int i = 0; i < xLength; i++) {
      // ... but only for items that are common to both pref arrays
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