public final class HardSoftDoubleScore extends AbstractScore<HardSoftDoubleScore> implements FeasibilityScore<HardSoftDoubleScore>
Score
is based on 2 levels of double constraints: hard and soft.
Hard constraints have priority over soft constraints.
WARNING: NOT RECOMMENDED TO USE DUE TO ROUNDING ERRORS THAT CAUSE SCORE CORRUPTION.
For example, this prints false: System.out.println((0.01 + 0.05) == (0.01 + 0.02 + 0.03));
Use HardSoftBigDecimalScore
instead.
This class is immutable.
Score
,
Serialized FormModifier and Type | Method and Description |
---|---|
HardSoftDoubleScore |
add(HardSoftDoubleScore augment)
Returns a Score whose value is (this + augment).
|
int |
compareTo(HardSoftDoubleScore other) |
HardSoftDoubleScore |
divide(double divisor)
Returns a Score whose value is (this / divisor).
|
boolean |
equals(Object o) |
double |
getHardScore()
The total of the broken negative hard constraints and fulfilled positive hard constraints.
|
double |
getSoftScore()
The total of the broken negative soft constraints and fulfilled positive soft constraints.
|
int |
hashCode() |
boolean |
isFeasible()
A
Solution is feasible if it has no broken hard constraints. |
HardSoftDoubleScore |
multiply(double multiplicand)
Returns a Score whose value is (this * multiplicand).
|
HardSoftDoubleScore |
negate()
Returns a Score whose value is (- this).
|
static HardSoftDoubleScore |
parseScore(String scoreString) |
HardSoftDoubleScore |
power(double exponent)
Returns a Score whose value is (this ^ exponent).
|
HardSoftDoubleScore |
subtract(HardSoftDoubleScore subtrahend)
Returns a Score whose value is (this - subtrahend).
|
Number[] |
toLevelNumbers()
Returns an array of numbers representing the Score.
|
String |
toString() |
static HardSoftDoubleScore |
valueOf(double hardScore,
double softScore) |
buildScorePattern, buildScorePattern, isCompatibleArithmeticArgument, parseLevelAsBigDecimal, parseLevelAsDouble, parseLevelAsInt, parseLevelAsLong, parseLevelStrings, parseLevelStrings
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
isCompatibleArithmeticArgument
public static HardSoftDoubleScore parseScore(String scoreString)
public static HardSoftDoubleScore valueOf(double hardScore, double softScore)
public double getHardScore()
public double getSoftScore()
In a normal score comparison, the soft score is irrelevant if the 2 scores don't have the same hard score.
public boolean isFeasible()
FeasibilityScore
Solution
is feasible if it has no broken hard constraints.isFeasible
in interface FeasibilityScore<HardSoftDoubleScore>
public HardSoftDoubleScore add(HardSoftDoubleScore augment)
Score
add
in interface Score<HardSoftDoubleScore>
augment
- value to be added to this Scorepublic HardSoftDoubleScore subtract(HardSoftDoubleScore subtrahend)
Score
subtract
in interface Score<HardSoftDoubleScore>
subtrahend
- value to be subtracted from this Scorepublic HardSoftDoubleScore multiply(double multiplicand)
Score
Math.floor(double)
.
If the implementation has a scale/precision, then the unspecified scale/precision of the double multiplicand should have no impact on the returned scale/precision.
multiply
in interface Score<HardSoftDoubleScore>
multiplicand
- value to be multiplied by this Score.public HardSoftDoubleScore divide(double divisor)
Score
Math.floor(double)
.
If the implementation has a scale/precision, then the unspecified scale/precision of the double divisor should have no impact on the returned scale/precision.
divide
in interface Score<HardSoftDoubleScore>
divisor
- value by which this Score is to be dividedpublic HardSoftDoubleScore power(double exponent)
Score
Math.floor(double)
.
If the implementation has a scale/precision, then the unspecified scale/precision of the double exponent should have no impact on the returned scale/precision.
power
in interface Score<HardSoftDoubleScore>
exponent
- value by which this Score is to be poweredpublic HardSoftDoubleScore negate()
Score
negate
in interface Score<HardSoftDoubleScore>
public Number[] toLevelNumbers()
Score
When rounding is needed, each rounding should be floored (as defined by Math.floor(double)
.
The length of the returned array must be stable for a specific Score
implementation.
For example: -0hard/-7soft
returns new int{-0, -7}
toLevelNumbers
in interface Score<HardSoftDoubleScore>
ScoreDefinition.fromLevelNumbers(Number[])
public int compareTo(HardSoftDoubleScore other)
compareTo
in interface Comparable<HardSoftDoubleScore>
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