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/*************************************************************************//* *//* Global data for C4.5 *//* -------------------- *//* *//*************************************************************************/extern short MaxAtt, /* max att number */ MaxClass, /* max class number */ MaxDiscrVal; /* max discrete values for any att */extern ItemNo MaxItem; /* max data item number */extern Description *Item; /* data items */extern DiscrValue *MaxAttVal; /* number of values for each att */extern char *SpecialStatus; /* special att treatment */extern String *ClassName, /* class names */ *AttName, /* att names */ **AttValName, /* att value names */ FileName; /* family name of files */extern Boolean AllKnown; /* true if there have been no splits on atts with missing values above the current position in the tree *//*************************************************************************//* *//* Global parameters for C4.5 *//* -------------------------- *//* *//*************************************************************************/extern short VERBOSITY, /* verbosity level (0 = none) */ TRIALS; /* number of trees to be grown */extern Boolean GAINRATIO, /* true=gain ratio, false=gain */ SUBSET, /* true if subset tests allowed */ BATCH, /* true if windowing turned off */ UNSEENS, /* true if to evaluate on test data */ PROBTHRESH; /* true if to use soft thresholds */extern ItemNo MINOBJS, /* minimum items each side of a cut */ WINDOW, /* initial window size */ INCREMENT; /* max window increment each iteration */extern float CF; /* confidence limit for tree pruning */
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