com.bayesserver.inference

Enum EvidenceType

java.lang.Object

java.lang.Enum<EvidenceType>

com.bayesserver.inference.EvidenceType

All Implemented Interfaces:

Serializable, Comparable<EvidenceType>

public enum EvidenceType
extends Enum<EvidenceType>

The type of evidence for a variable. When a variable is set to a specific value, this is called Hard evidence. For a discrete variable with a number of possible states, soft evidence implies that we have some information about the configuration of the states, but we are uncertain of the exact state. For example if a node has 3 states and we are sure that the last state is not possible, we can have evidence of the form {1, 1, 0}. We can also assign a distribution such as {0.3,0.4, 0.3}.

See Evidence.setStates(Variable, double[]) for information on how to set this type of evidence.

Enum Constant Summary

Enum Constants

Enum Constant and Description
HARD The value for the variable is known, such as the specific state of a discrete node.
NONE No evidence has been set.
SOFT A distribution is used to indicate evidence that is uncertain.
TEMPORAL The variable has evidence at one or more times.

Method Summary

Modifier and Type	Method and Description
static EvidenceType	valueOf(String name) Returns the enum constant of this type with the specified name.
static EvidenceType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NONE

public static final EvidenceType NONE

No evidence has been set. I.e. the variable's value is unknown/missing/null.

HARD

public static final EvidenceType HARD

The value for the variable is known, such as the specific state of a discrete node.

SOFT

public static final EvidenceType SOFT

A distribution is used to indicate evidence that is uncertain. For a discrete variable with a number of possible states, soft evidence implies that we have some information about the configuration of the states, but we are uncertain of the exact state. For example if a node has 3 states and we are sure that the last state is not possible, we can have evidence of the form {1, 1, 0}. We can also assign a distribution such as {0.3,0.4, 0.3}.

See Evidence.setStates(Variable, double[]) for information on how to set this type of evidence.

TEMPORAL

public static final EvidenceType TEMPORAL

The variable has evidence at one or more times.

Method Detail

values

public static EvidenceType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (EvidenceType c : EvidenceType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static EvidenceType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null