Examples of FunctionV1

 * @param sigma   standard deviation
 * @return   
 */
public FunctionV1 kernelDensityEstimation(double sigma){
    try{
        FunctionV1 fn= new ConstantFunction(0);
        Iterator<Double> it= cs.keySet().iterator();
        while(it.hasNext()){
            Double v= it.next();
            Integer f= cs.get(v);
            double coeff= (double) f.intValue()/size();
            fn= fn.add( (new NormalDistribution( v.doubleValue(), sigma)).
                    multiply(new ConstantFunction(coeff)) );
        }
        return fn;
    }catch(FunctionException e){
        e.printStackTrace();

Examples of fork.lib.math.algebra.elementary.function.v1.FunctionV1

 * @param coeffs
 * @return
 * @throws FunctionException 
 */
public static double logLikelihood(Distribution data, ArrayList<DistributionFunction> distrs, ArrayList<Double> coeffs) throws FunctionException{
    FunctionV1 fn= new ConstantFunction(0);
    for( int i=0; i<distrs.size(); i++ ){
        fn = fn.add( distrs.get(i).multiply(new ConstantFunction(coeffs.get(i))) );
    }
    return data.logLikelihood(fn);
}

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