[freenet-cvs] r18967 - trunk/freenet/src/freenet/support/math
nextgens at freenetproject.org
nextgens at freenetproject.org
Fri Apr 4 05:21:19 UTC 2008
Author: nextgens
Date: 2008-04-04 05:21:19 +0000 (Fri, 04 Apr 2008)
New Revision: 18967
Modified:
trunk/freenet/src/freenet/support/math/DecayingKeyspaceAverage.java
trunk/freenet/src/freenet/support/math/RunningAverage.java
Log:
indent
Modified: trunk/freenet/src/freenet/support/math/DecayingKeyspaceAverage.java
===================================================================
--- trunk/freenet/src/freenet/support/math/DecayingKeyspaceAverage.java 2008-04-04 05:20:31 UTC (rev 18966)
+++ trunk/freenet/src/freenet/support/math/DecayingKeyspaceAverage.java 2008-04-04 05:21:19 UTC (rev 18967)
@@ -13,132 +13,131 @@
* A filter on BootstrappingDecayingRunningAverage which makes it aware of the circular keyspace.
*/
public class DecayingKeyspaceAverage implements RunningAverage, Cloneable {
+
private static final long serialVersionUID = 5129429614949179428L;
/**
- 'avg' is the normalized average location, note that the the reporting bounds are (-2.0, 2.0) however.
+ 'avg' is the normalized average location, note that the the reporting bounds are (-2.0, 2.0) however.
*/
BootstrappingDecayingRunningAverage avg;
-
+
public DecayingKeyspaceAverage(double defaultValue, int maxReports, SimpleFieldSet fs) {
- avg=new BootstrappingDecayingRunningAverage(defaultValue, -2.0, 2.0, maxReports, fs);
+ avg = new BootstrappingDecayingRunningAverage(defaultValue, -2.0, 2.0, maxReports, fs);
}
-
+
public DecayingKeyspaceAverage(BootstrappingDecayingRunningAverage a) {
//check the max/min values? ignore them?
- avg=(BootstrappingDecayingRunningAverage)a.clone();
+ avg = (BootstrappingDecayingRunningAverage) a.clone();
}
-
+
public synchronized Object clone() {
return new DecayingKeyspaceAverage(avg);
}
-
+
public synchronized double currentValue() {
return avg.currentValue();
}
-
+
public synchronized void report(double d) {
- if ((d < 0.0) || (d > 1.0)) {
+ if((d < 0.0) || (d > 1.0))
//Just because we use non-normalized locations doesn't mean we can accept them.
- throw new IllegalArgumentException("Not a valid normalized key: "+d);
- }
- double superValue=avg.currentValue();
- double thisValue=Location.normalize(superValue);
- double diff=Location.change(thisValue, d);
- double toAverage=(superValue+diff);
+ throw new IllegalArgumentException("Not a valid normalized key: " + d);
+ double superValue = avg.currentValue();
+ double thisValue = Location.normalize(superValue);
+ double diff = Location.change(thisValue, d);
+ double toAverage = (superValue + diff);
/*
- To gracefully wrap around the 1.0/0.0 threshold we average over (or under) it, and simply normalize the result when reporting a currentValue
- ---example---
- d=0.2; //being reported
- superValue=1.9; //already wrapped once, but at 0.9
- thisValue=0.9; //the normalized value of where we are in the keyspace
- diff = +0.3; //the diff from the normalized values; Location.change(0.9, 0.2);
- avg.report(2.2);//to successfully move the average towards the closest route to the given value.
+ To gracefully wrap around the 1.0/0.0 threshold we average over (or under) it, and simply normalize the result when reporting a currentValue
+ ---example---
+ d=0.2; //being reported
+ superValue=1.9; //already wrapped once, but at 0.9
+ thisValue=0.9; //the normalized value of where we are in the keyspace
+ diff = +0.3; //the diff from the normalized values; Location.change(0.9, 0.2);
+ avg.report(2.2);//to successfully move the average towards the closest route to the given value.
*/
avg.report(toAverage);
- double newValue=avg.currentValue();
- if (newValue < 0.0 || newValue > 1.0)
+ double newValue = avg.currentValue();
+ if(newValue < 0.0 || newValue > 1.0)
avg.setCurrentValue(Location.normalize(newValue));
}
-
- public synchronized double valueIfReported(double d) {
- if ((d < 0.0) || (d > 1.0)) {
- throw new IllegalArgumentException("Not a valid normalized key: "+d);
- }
- double superValue=avg.currentValue();
- double thisValue=Location.normalize(superValue);
- double diff=Location.change(thisValue, d);
- return Location.normalize(avg.valueIfReported(superValue+diff));
+
+ public synchronized double valueIfReported(double d) {
+ if((d < 0.0) || (d > 1.0))
+ throw new IllegalArgumentException("Not a valid normalized key: " + d);
+ double superValue = avg.currentValue();
+ double thisValue = Location.normalize(superValue);
+ double diff = Location.change(thisValue, d);
+ return Location.normalize(avg.valueIfReported(superValue + diff));
}
-
- public synchronized long countReports() {
+
+ public synchronized long countReports() {
return avg.countReports();
}
-
+
public void report(long d) {
throw new IllegalArgumentException("KeyspaceAverage does not like longs");
}
-
+
public synchronized void changeMaxReports(int maxReports) {
avg.changeMaxReports(maxReports);
}
-
+
public synchronized SimpleFieldSet exportFieldSet(boolean shortLived) {
return avg.exportFieldSet(shortLived);
}
-
+
///@todo: make this a junit test
public static void main(String[] args) {
- DecayingKeyspaceAverage a=new DecayingKeyspaceAverage(0.9, 10, null);
+ DecayingKeyspaceAverage a = new DecayingKeyspaceAverage(0.9, 10, null);
a.report(0.9);
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(0.2);
- System.out.println("<-0.2-- current="+a.currentValue());
+ System.out.println("<-0.2-- current=" + a.currentValue());
}
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(0.8);
- System.out.println("--0.8-> current="+a.currentValue());
+ System.out.println("--0.8-> current=" + a.currentValue());
}
System.out.println("--- positive wrap test ---");
- for (int wrap=3; wrap!=0; wrap--) {
- System.out.println("wrap test #"+wrap);
- for (int i=10; i!=0; i--) {
+ for(int wrap = 3; wrap != 0; wrap--) {
+ System.out.println("wrap test #" + wrap);
+ for(int i = 10; i != 0; i--) {
a.report(0.25);
- System.out.println("<-0.25- current="+a.currentValue());
+ System.out.println("<-0.25- current=" + a.currentValue());
}
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(0.5);
- System.out.println("--0.5-> current="+a.currentValue());
+ System.out.println("--0.5-> current=" + a.currentValue());
}
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(0.75);
- System.out.println("-0.75-> current="+a.currentValue());
+ System.out.println("-0.75-> current=" + a.currentValue());
}
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(1.0);
- System.out.println("<-1.0-- current="+a.currentValue());
+ System.out.println("<-1.0-- current=" + a.currentValue());
}
}
System.out.println("--- negative wrap test ---");
- a=new DecayingKeyspaceAverage(0.2, 10, null);
+ a = new DecayingKeyspaceAverage(0.2, 10, null);
a.report(0.2);
- for (int wrap=3; wrap!=0; wrap--) {
- System.out.println("negwrap test #"+wrap);
- for (int i=10; i!=0; i--) {
+ for(int wrap = 3; wrap != 0; wrap--) {
+ System.out.println("negwrap test #" + wrap);
+ for(int i = 10; i != 0; i--) {
a.report(0.75);
- System.out.println("-0.75-> current="+a.currentValue());
+ System.out.println("-0.75-> current=" + a.currentValue());
}
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(0.5);
- System.out.println("<-0.5-- current="+a.currentValue());
+ System.out.println("<-0.5-- current=" + a.currentValue());
}
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(0.25);
- System.out.println("<-0.25- current="+a.currentValue());
+ System.out.println("<-0.25- current=" + a.currentValue());
}
- for (int i=10; i!=0; i--) {
+ for(int i = 10; i != 0; i--) {
a.report(1.0);
- System.out.println("--1.0-> current="+a.currentValue());
+ System.out.println("--1.0-> current=" + a.currentValue());
}
}
}
-}
\ No newline at end of file
+}
Modified: trunk/freenet/src/freenet/support/math/RunningAverage.java
===================================================================
--- trunk/freenet/src/freenet/support/math/RunningAverage.java 2008-04-04 05:20:31 UTC (rev 18966)
+++ trunk/freenet/src/freenet/support/math/RunningAverage.java 2008-04-04 05:21:19 UTC (rev 18967)
@@ -6,21 +6,25 @@
import java.io.Serializable;
public interface RunningAverage extends Serializable, Cloneable {
-
- public Object clone();
-
+
+ public Object clone();
+
public double currentValue();
+
public void report(double d);
+
public void report(long d);
- /**
- * Get what currentValue() would be if we reported some given value
- * @param r the value to mimic reporting
- * @return the output of currentValue() if we were to report r
- */
- public double valueIfReported(double r);
- /**
- * @return the total number of reports on this RunningAverage so far.
- * Used for weighted averages, confidence/newbieness estimation etc.
- */
- public long countReports();
+
+ /**
+ * Get what currentValue() would be if we reported some given value
+ * @param r the value to mimic reporting
+ * @return the output of currentValue() if we were to report r
+ */
+ public double valueIfReported(double r);
+
+ /**
+ * @return the total number of reports on this RunningAverage so far.
+ * Used for weighted averages, confidence/newbieness estimation etc.
+ */
+ public long countReports();
}
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