org.activemath.studentmodel2.data
Class EvidenceData

java.lang.Object
  org.activemath.studentmodel2.data.EvidenceData

public class EvidenceData
extends Object

This class contains evidence in the sense of an exercise result (or part of it) for a given node in the knowledge base (mBase).
It contains information about:

• the userId of the user, who did the exercise
• the concept for which this is an evidence
• the competency this is an evidence for
• the achievement within this evidence (achievement in an exercise)
• the exerciseId of the exercise
• the competency-level of the exercise (1..4)
• the difficulty of the exercise (1..5)
• the eventId of the event
• the confidence value, the user has specified in [0,100] or -1 if not given
• a timestamp of the event
• the duration of the step

See Also:

EvidenceContainer

Constructor Summary

EvidenceData()
Default constructor (empty)

EvidenceData(ExerciseResult exResult, CognitiveProcess cognitiveProcess, String conceptId)
Constructor

Method Summary

double	getAchievement()
CognitiveProcess	getCognitiveProcess()
CompetencyLevel	getCompetencyLevel()
String	getConceptId()
int	getConfidence()
Difficulty	getDifficulty()
long	getEventId()
String	getExerciseId()
double	getIRTdifficulty()
String	getKey() Creates a key consisting of: userId "+" competencyID "+" conceptId "+" eventId
int	getMastery()
long	getStepDuration()
long	getTimestamp()
String	getUserId()
void	setCognitiveProcess(CognitiveProcess cognitiveProcess) Sets the cognitive process
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

EvidenceData

public EvidenceData()

Default constructor (empty)

EvidenceData

public EvidenceData(ExerciseResult exResult,
                    CognitiveProcess cognitiveProcess,
                    String conceptId)

Constructor

Parameters:

exResult - an exercise result containing information about the outcome of an exercise done by a learner

cognitiveProcess - the competency the exercise result is for

conceptId - the corresponding concept id

Method Detail

getAchievement

public double getAchievement()

Returns:

the achievement

getMastery

public int getMastery()

getCognitiveProcess

public CognitiveProcess getCognitiveProcess()

Returns:

the cognitiveProcess

setCognitiveProcess

public void setCognitiveProcess(CognitiveProcess cognitiveProcess)

Sets the cognitive process

Parameters:

cognitiveProcess -

getCompetencyLevel

public CompetencyLevel getCompetencyLevel()

Returns:

the competencyLevel

getConceptId

public String getConceptId()

Returns:

the conceptId

getDifficulty

public Difficulty getDifficulty()

Returns:

the difficulty

getEventId

public long getEventId()

Returns:

the eventId

getExerciseId

public String getExerciseId()

Returns:

the exerciseId

getTimestamp

public long getTimestamp()

Returns:

the timestamp

getUserId

public String getUserId()

Returns:

the userId

getIRTdifficulty

public double getIRTdifficulty()

Returns:

the IRTdifficulty (item value of an exercise)

getConfidence

public int getConfidence()

Returns:

Confidence value [0,100] or -1

getStepDuration

public long getStepDuration()

Returns:

Step-Duration, -1 if unknown

getKey

public String getKey()

Creates a key consisting of:
userId "+" competencyID "+" conceptId "+" eventId

toString

public String toString()

Overrides:

toString in class Object