public TwisterAlgorithm(
Subset subset,
bool chunkPositivePMI = true,
bool chunkAveragePMI = true,
int compressTagOccurence = 0,
int compressCorpusOccurence = 0,
LogicalOperatorEnum op = LogicalOperatorEnum.AND,
bool useRxy = true
) : base(subset)
{
_chunkPositivePMI = chunkPositivePMI;
_chunkAveragePMI = chunkAveragePMI;
if (compressCorpusOccurence > 0 && compressTagOccurence > 0)
{
// tOcc <= _compressTagOccurence
// cOcc <= _compressCorpusOccurence
var tPe = Expression.Parameter(typeof(int));
var cPe = Expression.Parameter(typeof(int));
var tConst = Expression.Constant(compressTagOccurence);
var cConst = Expression.Constant(compressCorpusOccurence);
var left = Expression.LessThanOrEqual(tPe, tConst);
var right = Expression.LessThanOrEqual(cPe, cConst);
var exp = (op == LogicalOperatorEnum.AND) ? Expression.And(left, right) : Expression.Or(left, right);
Expression <Func <int, int, bool> > le = Expression.Lambda <Func <int, int, bool> >(exp, tPe, cPe);
_compiledExpression = le.Compile();
}
}
private string GetExpressionStr(LogicalOperatorEnum logicalOperatorEnum)
{
string lStr = string.Format("{0}");
switch (logicalOperatorEnum)
{
case LogicalOperatorEnum.Default:
break;
case LogicalOperatorEnum.And:
lStr = string.Format("<ogc:And>{0}</ogc:And>");
break;
case LogicalOperatorEnum.Or:
lStr = string.Format("<ogc:Or>{0}</ogc:Or>");
break;
case LogicalOperatorEnum.Not:
lStr = string.Format("<ogc:Not>{0}</ogc:Not>");
break;
default: break;
}
return(lStr);
}
