Neural network prediction data MATLAB

The data points are shown below, and a neural network is used to predict the classification of data point (2, 1).

code listing

clear all
clc
%载入数据
data = xlsread('test3_data.xlsx');
%绘制数据点
sample = data(11:16,1:2); % 每一行的前两个代表一个数据点
label = data(11:16,3);
draw(sample, label)%draw函数:调用draw子函数绘制图像
%hold on
% 初始化w,b,alpha
w = [-1,-2]; %权重
b = 2; %增量
alpha = 1;  % learning rate学习率
% 更新 w,b
scatter(2,1); %预测值
while 1