Hex, Bugs and More Physics | Emre S. Tasci

Mathematica Library for DataMining
Functions Library Intended To Be Used In DataMining Procedures
11/2007
Emre S. Tasci
S&C / MSE / 3mE / TUDelftFunctions List (EF: Required External Functions)

• Int DMBooleEST[statement_]
  Converts True/False => 1/0
  EF – NONE
• Bool DMBooleEST[statement_]
  Converts 1/0 => True/False
  EF – NONE
• Int DMCondEntropyEST[MatrixIN_,var2_,var1_, posVal1_, posVal2_,probVar1_]
  Calculates the Conditional Entropy H(var2|var1)
  EF – MSelectEST, DMProbeEST, DMEntropyEST
• Int DMEntropyEST[problist_]
  Calculates the entropy given the probability list “problist”
  EF – NONE
• Matrix DMGenMatrixEST[dim_,file_]
  Generates a Matrix of [dim,dim] dimension and writes this matrix to the “file” file. Returns the matrix generated.
  EF – DMBooleEST, DMUnitizeEST
• List DMInfGainEST[MatrixIN_,varno_]
  Calculates the Information Gain related to the “varno” variable wrt to the remaining variables.
  EF -Â MDiffElementEST , MSwapEST, DMCondEntropyEST, DMEntropyEST, DMProbeEST
• Vector DMProbeEST[MatrixIN_,varno_,varlist_]
  Calculates the probabilities of the variables’ possible outcomes.
  EF – NONE;

Important!!! ————————————

Assumed form of the MatrixIN: ;



(i.e., values for the same variable are stored in ROWS, NOTÂ in COLUMNS!)