Package com.djrapitops.plan.delivery.domain.mutators

Class ActivityIndex

java.lang.Object

com.djrapitops.plan.delivery.domain.mutators.ActivityIndex

public class ActivityIndex
extends Object

Represents Activity index of a player at a certain date.

Old formula for activity index was not linear and difficult to turn into a query due to conditional multipliers. Thus a new formula was written.

T - Time played after someone is considered active on a particular week t1, t2, t3 - Time played that week

Activity index takes into account last 3 weeks.

Activity for a single week is calculated using A(t) = (1 / (pi/2 * (t/T) + 1)). A(t) is based on function f(x) = 1 / (x + 1), which has property f(0) = 1, decreasing from there, but not in a straight line. You can see the function plotted here

To fine tune the curve pi/2 is used since it felt like a good curve.

Activity index A is calculated by using the formula: A = 5 - 5 * [A(t1) + A(t2) + A(t3)] / 3

Plot for A and limits

New Limits for A would thus be < 1: Inactive > 1: Irregular > 2: Regular > 3: Active > 3.75: Very Active

Field Summary

Fields

Modifier and Type	Field	Description
static final double	ACTIVE
static final double	IRREGULAR
static final double	REGULAR
static final double	VERY_ACTIVE

Constructor Summary

Constructors

Constructor	Description
ActivityIndex(double value, long date)
ActivityIndex(DataContainer container, long date, long playtimeMsThreshold)
ActivityIndex(List<FinishedSession> sessions, long date, long playtimeMsThreshold)

Method Summary

Modifier and Type	Method	Description
double	distance(ActivityIndex other)
long	getDate()
static String[]	getDefaultGroupLangKeys()
static String[]	getDefaultGroups()
String	getFormattedValue(Formatter<Double> formatter)
String	getGroup()
static String	getGroup(double value)
String	getGroup(Locale locale)
String	getGroupLang()
static HtmlLang	getGroupLang(double value)
String	getGroupLocaleKey()
static String[]	getGroupLocaleKeys()
static String[]	getGroups(Locale locale)
double	getValue()

Methods inherited from class java.lang.Object

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

Field Details

VERY_ACTIVE

public static final double VERY_ACTIVE

See Also:

• Constant Field Values

ACTIVE

public static final double ACTIVE

See Also:

• Constant Field Values

REGULAR

public static final double REGULAR

See Also:

• Constant Field Values

IRREGULAR

public static final double IRREGULAR

See Also:

• Constant Field Values

Constructor Details

ActivityIndex

public ActivityIndex(DataContainer container,
 long date,
 long playtimeMsThreshold)

ActivityIndex

public ActivityIndex(List<FinishedSession> sessions,
 long date,
 long playtimeMsThreshold)

ActivityIndex

public ActivityIndex(double value,
 long date)

Method Details

getDefaultGroups

public static String[] getDefaultGroups()

getDefaultGroupLangKeys

public static String[] getDefaultGroupLangKeys()

getGroups

public static String[] getGroups(Locale locale)

getGroupLocaleKeys

public static String[] getGroupLocaleKeys()

getValue

public double getValue()

getDate

public long getDate()

getFormattedValue

public String getFormattedValue(Formatter<Double> formatter)

distance

public double distance(ActivityIndex other)

getGroupLang

public static HtmlLang getGroupLang(double value)

getGroup

public static String getGroup(double value)

getGroup

public String getGroup()

getGroupLang

public String getGroupLang()

getGroup

public String getGroup(Locale locale)

getGroupLocaleKey

public String getGroupLocaleKey()