Current Limitations
===================

File to update while features are implemented or new uncovered ones are discovered.

rel 7.52.0
----------

Implemented models:
1) Regression model
2) Tree model
3) Scorecard model
4) Mining model
5) Clustering model

Overall limitations
===================
1. only one "target field" managed
2. Extension unimplemented

MiningSchema/MiningField
------------------------
1. only predicted/target/active usageType implemented
2. importance unimplemented
3. outliers unimplemented
4. lowValue unimplemented
5. highValue unimplemented
6. missingValueReplacement partly implemented
7. missingValueTreatment partly implemented
8. invalidValueTreatment unimplemented
9. invalidValueReplacement unimplemented


Output/OutputField
------------------
1. Decisions unimplemented
2. Value unimplemented
3. only predictedValue/probability result feature implemented
4. Rule feature unimplemented   
5. algorithm unimplemented
6. isMultiValued unimplemented
7. segmentId unimplemented
8. isFinalResult unimplemented

TransformationDictionary/LocalTransformation
--------------------------------------------
1. Only _Constant_, _FieldRef_ and _Apply_ expressions implemented
2. Default functions unimplemented

Target
------
Not implemented

Extensions
----------
Not implemented

Models limitations
==================

Regression model
----------------
1. ModelStats unimplemented
2. ModelExplanation unimplemented
3. ModelVerification unimplemented

Tree model
----------
1. verification unimplemented
2. ModelStats unimplemented
3. ModelExplanation unimplemented
4. ModelVerification unimplemented
5. IsMissing/IsNotMissing inside SimplePredicate unimplemented
6. Surrogate inside CompoundPredicate unimplemented
7. Only two _XOR_ predicates managed
8. Only _predictedValue-type_ output field managed
9. missingValueStrategy partially implemented
10. missingValuePenalty unimplemented
11. noTrueChildStrategy partially implemented
12. splitCharacteristic unimplemented
13. isScorable unimplemented

Scorecard model
---------------
1. verification unimplemented
2. ModelStats unimplemented
3. ModelExplanation unimplemented
4. ModelVerification unimplemented
5. see Tree model about predicates


Mining model
------------
1. verification unimplemented
2. ModelStats unimplemented
3. ModelExplanation unimplemented
4. ModelVerification unimplemented
5. VariableWeight unimplemented   
5. see Tree model about predicates

Clustering model
----------------
1. _distributionBased_ models not implemented
2. _table_ compare function not implemented
3. Only _euclidean_ and _squaredEuclidean_ aggregation functions are implemented
4. Input field type must be numerical (_integer_ / _double_)
5. Target field type must be _string_

