Пример #1
0
    c_weights = ['auto']
    param_grid = tuple([c_vals, c_weights, g_vals])
    param_grid = list(product(*param_grid))

    # storage structure for forecasts
    mvalid = np.zeros((xtrain.shape[0],len(param_grid)))
    mfull = np.zeros((xtest.shape[0],len(param_grid)))
    
    ## build 2nd level forecasts
    for i in range(len(param_grid)):        
            print("processing parameter combo:", param_grid[i])
            # configure model with j-th combo of parameters
            x = param_grid[i]
            model.C = x[0]
            model.class_weight = x[1]
            model.gamma = x[2]
            
            # loop over folds
            for j in range(0,n_folds):
                print("Running fold", j+1)
                idx0 = np.where(fold_index != j)
                idx1 = np.where(fold_index == j)
                x0 = np.array(xtrain)[idx0,:][0];
                x1 = np.array(xtrain)[idx1,:][0]
                y0 = np.array(ytrain)[idx0];
                y1 = np.array(ytrain)[idx1]
			
                # fit the model on observations associated with subject whichSubject in this fold
                model.fit(x0, y0)
                mvalid[idx1,i] = model.predict_proba(x1)[:,1]
                
Пример #2
0
    c_weights = ['auto']
    param_grid = tuple([c_vals, c_weights, g_vals])
    param_grid = list(product(*param_grid))

    # storage structure for forecasts
    mvalid = np.zeros((xtrain.shape[0],len(param_grid)))
    mfull = np.zeros((xtest.shape[0],len(param_grid)))
    
    ## build 2nd level forecasts
    for i in range(len(param_grid)):        
            print "processing parameter combo:", param_grid[i]
            # configure model with j-th combo of parameters
            x = param_grid[i]
            model.C = x[0]
            model.class_weight = x[1]
            model.gamma = x[2]
            
            # loop over folds
            for j in range(0,n_folds):
                print "Running fold", j+1
                idx0 = np.where(fold_index != j)
                idx1 = np.where(fold_index == j)
                x0 = np.array(xtrain)[idx0,:][0];
                x1 = np.array(xtrain)[idx1,:][0]
                y0 = np.array(ytrain)[idx0];
                y1 = np.array(ytrain)[idx1]
			
                # fit the model on observations associated with subject whichSubject in this fold
                model.fit(x0, y0)
                mvalid[idx1,i] = model.predict_proba(x1)[:,1]