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java.lang.Objectorg.apache.mahout.cf.taste.impl.recommender.NullRescorer<T>
public final class NullRescorer<T>
A simple Rescorer which always returns the original score.
| Method Summary | |
|---|---|
static IDRescorer |
getItemInstance()
|
static Rescorer<LongPair> |
getItemItemPairInstance()
|
static IDRescorer |
getUserInstance()
|
static Rescorer<LongPair> |
getUserUserPairInstance()
|
boolean |
isFiltered(long id)
Returns true to exclude the given thing. |
boolean |
isFiltered(T thing)
Returns true to exclude the given thing. |
double |
rescore(long id,
double originalScore)
|
double |
rescore(T thing,
double originalScore)
|
String |
toString()
|
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Method Detail |
|---|
public static IDRescorer getItemInstance()
public static IDRescorer getUserInstance()
public static Rescorer<LongPair> getItemItemPairInstance()
public static Rescorer<LongPair> getUserUserPairInstance()
public double rescore(T thing,
double originalScore)
rescore in interface Rescorer<T>thing - to rescoreoriginalScore - current score for item
public boolean isFiltered(T thing)
Rescorertrue to exclude the given thing.
isFiltered in interface Rescorer<T>thing - the thing to filter
true to exclude, false otherwise
public double rescore(long id,
double originalScore)
rescore in interface IDRescorerid - ID of thing (user, item, etc.) to rescoreoriginalScore - original score
Double.NaN to indicate that this should be excluded entirelypublic boolean isFiltered(long id)
IDRescorertrue to exclude the given thing.
isFiltered in interface IDRescorerid - ID of thing (user, item, etc.) to rescore
true to exclude, false otherwisepublic String toString()
toString in class Object
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