LISp-Miner Control Language Reference, version: 27.13.00 of 13 Aug 2017

Class TaskET

ETree-Miner data-mining task
inherits from Task
namespace: lm.tasks

Constructor

TaskET()
Creates a new object of this class

Parameters

  • luaTable - to store named parameters

Obligatory named parameters

  • name : string - unique name for the new ETluster-Miner task
  • pTaskGroup : TaskGroup - parent group of tasks
  • pDataTable : DataTable - database table this task is based upon

Properties List

DataTable  the DataTable, this task is based on
Description  Textual description of this object (up to 65535 characters)
DisabledFlag  If this task is disabled and cannot be run
ETTrunkCountMax  Maximal number of generated decision rules
FullDepthTreesOnlyFlag  Whether to generate the full-trees only. Set to false for generating partial trees also.
HypothesisCountMax  Maximal number of hypotheses before generation is interrupted
ID  Unique identifier (primary key) of the object
Name  Unique name of this object. Cannot be empty.
NodeFrequencyMin  Minimal node frequency (a node is not expanded further if below)
NodePurityMin  Desired minimal node purity (a node is not expanded further if reached)
Note  Text comment to this object (up to 255 characters)
PrunePermutationFullFlag  Whether to prune the full-length permutation of attributes
PrunePermutationFullFlag  Whether to prune splits with the same-class leaves
SplitAttributesMax  Maximal number of splits
SplitMaxDecreasePerLevel  Max-split-number decrease per level
SplitSignificanceChiSqAlpha  Chi-square significance level
SplitSignificanceChiSqTestFlag  Whether to perform the ChiSq test for an attribute selection
StoreDecisionTreesFlag  Whether to store decision trees after they are generated
StoreETTrunkFlag  Whether to store decision rules after they are generated
TargetSetting  the ETAttributeSetting, target class setting
TaskGenerationStatus  Status code for task, see TaskGenerationStatus codes
TaskGroup  the TaskGroup, this task belongs to
TestingDataSplitPercentage  The size of testing data (in percent of the whole data) for preparing random sample
TestingFolds  Number of folds for the cross-validation testing
TreeCountMax  Maximal number of generated decision trees
TreeDepthMax  Maximal tree depth frequency (it is not expanded further if reached)
TreeQualityMin  Threshold value for minimal tree quality
TreeQualityMinTestFlag  Whether to test minimal tree quality

Methods List

canDel () Returns true if the object could be deleted (is not used)
clone () Creates a clone (an exact copy) of this task
findETPartialGroupSetting () Tries to look-up a ETPartialGroupSetting with a unique property given as parameter. Just one parameter has to be specified. Returns nil if ETPartialGroupSetting with this property doesn't exists.
findFTWholeCedentSetting () Tries to look-up a FTWholeCedentSetting with a unique property given as parameter. Just one parameter has to be specified. Returns nil if FTWholeCedentSetting with this property doesn't exists.
findHypothesis () Tries to look-up a Hypothesis with a unique property given as parameter. Just one parameter has to be specified. Returns nil if Hypothesis with this property doesn't exists.
findHypothesisGroup () Tries to look-up a HypothesisGroup with a unique property given as parameter. Just one parameter has to be specified. Returns nil if HypothesisGroup with this property doesn't exists.
getDataTable () Returns the DataTable this task is based on, the value of DataTable property
getETPartialGroupSettingCount () Returns number of ETPartialGroupSettings for attributes in this task
getFTWholeCedentSettingCount () Returns number of whole cedents in this task
getHypothesisCount () Returns number of hypotheses in this task (if the value of TaskGenerationStatus property is equal or greater then Running, see TaskGenerationStatus codes
getHypothesisCountMax () Returns the value of HypothesisCountMax property
getHypothesisGroupCount () Returns number of groups of hypotheses in this task
getID () Returns unique identifier (primary key) of the object
getName () Returns the value of Name property, name of this object
getNote () Returns the value of Note property
getTaskGenerationStatus () Returns the value of TaskGenerationStatus property
getTaskGenerationStatusStr () Returns textual description of the value of TaskGenerationStatus property
getTaskGroup () Returns the TaskGroup this task belongs to, the value of TaskGroup property
getTaskSubTypeCode () Returns code of sub-type of this task (type of patterns it looks for), see TaskSubType codes
getTaskSubTypeKey () Returns unique string key of sub-type of this task (type of patterns it looks for)
getTaskSubTypeName () Returns string representation of sub-type of this task (type of patterns it looks for)
getTestingTypeCode () Returns code of testing type, see TestingType codes
getTestingTypeKey () Returns unique string key of testing type
getTestingTypeName () Returns string representation of testing type
isDisabledFlag () Returns the value of DisabledFlag property
isTaskGenerationStatusFinished () Returns true when the value of TaskGenerationStatus property is Solved, Interrupted or Failed
isTaskGenerationStatusInProcess () Returns true when the value of TaskGenerationStatus property is Waiting or Running
onAdd () Store the newly created object into metabase
onDel () Delete the object from metabase (fails if canDel returns false)
onUpdate () Save changes made to the object into metabase
prepareETPartialGroupSettingArray () Returns array of ETPartialGroupSettings (groups of attributes in this task)
prepareFTWholeCedentSettingArray () Returns array of FTWholeCedentSettings (the whole cedents in this task)
prepareHypothesisArray () Returns array of hypotheses in this task. Returns objects of a descendant class corresponding to this task type (ie. HypothesisFT for TaskFT etc.)
prepareHypothesisGroupArray () Returns array of groups of hypotheses in this task
queryTaskGenerationStatus () Re-reads the task state from metabase and returns 1 if the the state has changed from isTaskGenerationStatusInProcess to isTaskGenerationStatusFinished, otherwise returns 0
runAndWaitForResults () Starts the data-mining task and waits till it has finished
runAsync () Starts the task (if not already in isTaskGenerationStatusInProcess) in a parallel thread and returns immediately
setDisabledFlag () Sets the value of DisabledFlag property
setHypothesisCountMax () Sets the value of HypothesisCountMax property
setName () Sets the value of Name property, name of this object (must be unique)
setNote () Sets the value of Note property
setTaskGroup () Sets the TaskGroup this task belongs to, the value of TaskGroup property
setTestingTypeCode () Sets code of testing type, see TestingType codes
waitForResults () Waits till the task state changes to isTaskGenerationStatusFinished

Properties

DataTable  (read-only) : DataTable
the DataTable, this task is based on
Intherited from: Task
Description : string
Textual description of this object (up to 65535 characters)
Intherited from: Task
DisabledFlag : boolean
If this task is disabled and cannot be run
Intherited from: Task
ETTrunkCountMax : integer
Maximal number of generated decision rules
FullDepthTreesOnlyFlag : boolean
Whether to generate the full-trees only. Set to false for generating partial trees also.
HypothesisCountMax : integer
Maximal number of hypotheses before generation is interrupted
Intherited from: Task
ID  (read-only) : integer
Unique identifier (primary key) of the object
Intherited from: LMWrap
Name : string
Unique name of this object. Cannot be empty.
Intherited from: LMWrapName
NodeFrequencyMin : integer
Minimal node frequency (a node is not expanded further if below)
NodePurityMin : integer
Desired minimal node purity (a node is not expanded further if reached)
Note : string
Text comment to this object (up to 255 characters)
Intherited from: LMWrapName
PrunePermutationFullFlag : boolean
Whether to prune the full-length permutation of attributes
PrunePermutationFullFlag : boolean
Whether to prune splits with the same-class leaves
SplitAttributesMax : integer
Maximal number of splits
SplitMaxDecreasePerLevel : integer
Max-split-number decrease per level
SplitSignificanceChiSqAlpha : integer
Chi-square significance level
SplitSignificanceChiSqTestFlag : boolean
Whether to perform the ChiSq test for an attribute selection
StoreDecisionTreesFlag : boolean
Whether to store decision trees after they are generated
StoreETTrunkFlag : boolean
Whether to store decision rules after they are generated
TargetSetting  (read-only) : ETAttributeSetting
the ETAttributeSetting, target class setting
TaskGenerationStatus  (read-only) : integer
Status code for task, see TaskGenerationStatus codes
Intherited from: Task
TaskGroup  (read-only) : TaskGroup
the TaskGroup, this task belongs to
Intherited from: Task
TestingDataSplitPercentage : integer
The size of testing data (in percent of the whole data) for preparing random sample
TestingFolds : integer
Number of folds for the cross-validation testing
TreeCountMax : integer
Maximal number of generated decision trees
TreeDepthMax : integer
Maximal tree depth frequency (it is not expanded further if reached)
TreeQualityMin : integer
Threshold value for minimal tree quality
TreeQualityMinTestFlag : boolean
Whether to test minimal tree quality

Methods

canDel() : boolean
Returns true if the object could be deleted (is not used)
Intherited from: LMWrap

Returns

  • boolean
clone() : Task
Creates a clone (an exact copy) of this task
Intherited from: Task

Returns

  • Task - cloned task
findETPartialGroupSetting() : ETPartialGroupSetting
Tries to look-up a ETPartialGroupSetting with a unique property given as parameter. Just one parameter has to be specified. Returns nil if ETPartialGroupSetting with this property doesn't exists.

Parameters

  • luaTable - to store named parameters

Obligatory named parameters

  • nID : integer - an ID of the ETPartialGroupSetting to look-up

Returns

findFTWholeCedentSetting() : FTWholeCedentSetting
Tries to look-up a FTWholeCedentSetting with a unique property given as parameter. Just one parameter has to be specified. Returns nil if FTWholeCedentSetting with this property doesn't exists.
Intherited from: Task

Parameters

  • luaTable - to store named parameters

Obligatory named parameters

  • nCedentTypeCode : integer - CedentType code to identify the whole cedent to find

Returns

findHypothesis() : Hypothesis
Tries to look-up a Hypothesis with a unique property given as parameter. Just one parameter has to be specified. Returns nil if Hypothesis with this property doesn't exists.
Intherited from: Task

Parameters

  • luaTable - to store named parameters

Optional named parameters

  • nID : integer - an ID of the Hypothesis to look-up

Returns

findHypothesisGroup() : HypothesisGroup
Tries to look-up a HypothesisGroup with a unique property given as parameter. Just one parameter has to be specified. Returns nil if HypothesisGroup with this property doesn't exists.
Intherited from: Task

Parameters

  • luaTable - to store named parameters

Optional named parameters

  • nID : integer - an ID of the HypothesisGroup to look-up
  • name : string - a name of the group of hypotheses to look-up

Returns

getDataTable() : DataTable
Returns the DataTable this task is based on, the value of DataTable property
Intherited from: Task

Returns

getETPartialGroupSettingCount() : integer
Returns number of ETPartialGroupSettings for attributes in this task

Returns

  • integer
getFTWholeCedentSettingCount() : integer
Returns number of whole cedents in this task
Intherited from: Task

Returns

  • integer
getHypothesisCount() : integer
Returns number of hypotheses in this task (if the value of TaskGenerationStatus property is equal or greater then Running, see TaskGenerationStatus codes
Intherited from: Task

Returns

  • integer
getHypothesisCountMax() : integer
Returns the value of HypothesisCountMax property
Intherited from: Task

Returns

  • integer
getHypothesisGroupCount() : integer
Returns number of groups of hypotheses in this task
Intherited from: Task

Returns

  • integer
getID() : integer
Returns unique identifier (primary key) of the object
Intherited from: LMWrap

Returns

  • integer
getName() : string
Returns the value of Name property, name of this object
Intherited from: LMWrapName

Returns

  • string
getNote() : string
Returns the value of Note property
Intherited from: LMWrapName

Returns

  • string
getTaskGenerationStatus() : integer
Returns the value of TaskGenerationStatus property
Intherited from: Task

Returns

  • integer
getTaskGenerationStatusStr() : string
Returns textual description of the value of TaskGenerationStatus property
Intherited from: Task

Returns

  • string
getTaskGroup() : TaskGroup
Returns the TaskGroup this task belongs to, the value of TaskGroup property
Intherited from: Task

Returns

getTaskSubTypeCode() : integer
Returns code of sub-type of this task (type of patterns it looks for), see TaskSubType codes
Intherited from: Task

Returns

  • integer
getTaskSubTypeKey() : string
Returns unique string key of sub-type of this task (type of patterns it looks for)
Intherited from: Task

Returns

  • string
getTaskSubTypeName() : string
Returns string representation of sub-type of this task (type of patterns it looks for)
Intherited from: Task

Returns

  • string
getTestingTypeCode() : integer
Returns code of testing type, see TestingType codes

Returns

  • integer
getTestingTypeKey() : string
Returns unique string key of testing type

Returns

  • string
getTestingTypeName() : string
Returns string representation of testing type

Returns

  • string
isDisabledFlag() : boolean
Returns the value of DisabledFlag property
Intherited from: Task

Returns

  • boolean
isTaskGenerationStatusFinished() : boolean
Returns true when the value of TaskGenerationStatus property is Solved, Interrupted or Failed
Intherited from: Task

Returns

  • boolean
isTaskGenerationStatusInProcess() : boolean
Returns true when the value of TaskGenerationStatus property is Waiting or Running
Intherited from: Task

Returns

  • boolean
onAdd()
Store the newly created object into metabase
Intherited from: LMWrap
onDel()
Delete the object from metabase (fails if canDel returns false)
Intherited from: LMWrap
onUpdate()
Save changes made to the object into metabase
Intherited from: LMWrap
prepareETPartialGroupSettingArray() : luaTable
Returns array of ETPartialGroupSettings (groups of attributes in this task)

Returns

  • luaTable
prepareFTWholeCedentSettingArray() : luaTable
Returns array of FTWholeCedentSettings (the whole cedents in this task)
Intherited from: Task

Returns

  • luaTable
prepareHypothesisArray() : luaTable
Returns array of hypotheses in this task. Returns objects of a descendant class corresponding to this task type (ie. HypothesisFT for TaskFT etc.)
Intherited from: Task

Returns

  • luaTable
prepareHypothesisGroupArray() : luaTable
Returns array of groups of hypotheses in this task
Intherited from: Task

Returns

  • luaTable
queryTaskGenerationStatus() : integer
Re-reads the task state from metabase and returns 1 if the the state has changed from isTaskGenerationStatusInProcess to isTaskGenerationStatusFinished, otherwise returns 0
Intherited from: Task

Returns

  • integer - one or zero
runAndWaitForResults()
Starts the data-mining task and waits till it has finished
Intherited from: Task

Parameters

  • luaTable - to store named parameters

Optional named parameters

  • nTargetPlatform : integer - TargetPlatform code
  • bForceRunFinished : boolean - if true, forces the task to be run again even if it is already finished

Returns

  • integer - number of launched tasks (0 or 1)
runAsync()
Starts the task (if not already in isTaskGenerationStatusInProcess) in a parallel thread and returns immediately
Intherited from: Task

Parameters

  • luaTable - to store named parameters

Optional named parameters

  • nTargetPlatform : integer - TargetPlatform code
  • bForceRunFinished : boolean - if true, forces the task to be run again even if it is already finished

Returns

  • integer - number of launched tasks
setDisabledFlag( boolean )
Sets the value of DisabledFlag property
Intherited from: Task

Parameters

  • boolean
setHypothesisCountMax( integer )
Sets the value of HypothesisCountMax property
Intherited from: Task

Parameters

  • integer
setName( string )
Sets the value of Name property, name of this object (must be unique)
Intherited from: LMWrapName

Parameters

  • string - cannot be empty
setNote( string )
Sets the value of Note property
Intherited from: LMWrapName

Parameters

  • string
setTaskGroup( TaskGroup )
Sets the TaskGroup this task belongs to, the value of TaskGroup property
Intherited from: Task

Parameters

setTestingTypeCode( integer )
Sets code of testing type, see TestingType codes

Parameters

  • integer
waitForResults()
Waits till the task state changes to isTaskGenerationStatusFinished
Intherited from: Task

Parameters

  • luaTable - to store named parameters

Optional named parameters

  • nSleepTime : integer - time (in milliseconds) between two checks for change in metabase