public void shrink() {
if (!isCategorical) levelP = 10;
levelA = (String[]) Utils.resizeArray(levelA, levelP);
grpSize = (int[]) Utils.resizeArray(grpSize, levelP);
if (!isCategorical) {
levelP = 0;
dimThres = 10;
}
}
public double Min() {
if (!minSet)
if (dataSet.isDB) {
try {
Statement stmt = dataSet.con.createStatement();
String query = "select min(" + name + ") from " + dataSet.Table;
ResultSet rs = stmt.executeQuery(query);
if (rs.next()) this.min = Utils.atod(rs.getString(1));
rs.close();
stmt.close();
System.out.println("query: " + query + " ---> " + this.min);
} catch (Exception ex) {
System.out.println("DB Exception: get min ... " + ex);
}
} else for (int i = 0; i < data.length; i++) this.min = Math.min(data[i], this.min);
minSet = true;
return this.min;
}
public double Max() {
if (!maxSet)
if (dataSet.isDB) {
try {
Statement stmt = dataSet.con.createStatement();
String query = "select max(" + name + ") from " + dataSet.Table;
ResultSet rs = stmt.executeQuery(query);
if (rs.next()) this.max = Utils.atod(rs.getString(1));
rs.close();
stmt.close();
System.out.println("query: " + query + " ---> " + this.max);
} catch (Exception ex) {
System.out.println("DB Exception: get max ... " + ex);
}
} else if (!alpha)
if (!isCategorical) this.max = data[sortI[data.length - numMiss - 1]];
else if (numMiss == 0) this.max = Double.valueOf(levelA[permA[levelP - 1]]).doubleValue();
else this.max = Double.valueOf(levelA[permA[levelP - 2]]).doubleValue();
else for (int i = 0; i < dataSet.n - numMiss; i++) this.max = Math.max(data[i], this.max);
maxSet = true;
return this.max;
}
void expand() {
dimThres = (int) (1.5 * dimThres);
System.out.println("-- Expand to: " + dimThres);
levelA = (String[]) Utils.resizeArray(levelA, dimThres);
grpSize = (int[]) Utils.resizeArray(grpSize, dimThres);
}