C++实现AI智能体

cszhang_123

已于 2025-05-25 22:25:13 修改

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分类专栏： DeepCeek++ 文章标签： c++

于 2025-05-13 20:15:55 首次发布

本文链接：https://blog.youkuaiyun.com/cszhang_123/article/details/147849122

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2 篇文章

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1.引子

（或者说水）

最近不是DeepSeek挺火吗，我就想用C++做一个AI。

完整代码在最后，需要自己给AI喂数据，数据不够容易抽风。

2.逻辑

于是我问DeepSeek：解释一下AI的底层逻辑

DeepSeek：

AI的底层逻辑基于数据驱动的数学建模，核心是“学习”数据中的规律。其三大支柱为：
1. 算法（如神经网络）通过调整参数（权重）最小化预测误差；
2. 算力（GPU/TPU）支撑大规模矩阵运算；
3. 数据提供训练素材。训练时，模型通过反向传播优化权重，测试时泛化到新数据。本质是概率统计（如贝叶斯推断）与优化问题（如梯度下降）的结合，最终实现分类、回归或生成任务。

emm...该怎么说呢

于是我问DeepSeek：解释一下AI的底层逻辑，说人话

DeepSeek：

AI的底层逻辑核心原理：
你给AI看100万张猫狗照片（数据），它自己总结出"猫是尖耳朵，狗嘴长"（数学规律），下次看到新照片就能猜。
三大支柱：
数据：AI的"饲料"，越多越准
算法：处理数据的"数学公式套餐"
算力：用电脑暴力计算
关键特点：
没有真正的"理解"，只是算概率（说"你好"后接"吗"的概率高，就生成"你好吗"）
越用越准：像不停刷题的学生，见过的题型越多，解题越熟练
日常类比：
推荐系统=记性超好的售货员（记得你买过酱油，下次推荐醋）
自动驾驶=考了100万次驾照的老司机（但遇到没见过的路况也会懵）
本质上，AI就是用数学模拟神经网络的电信号传递，最终实现：输入→计算→输出。

（满意）

我注意到了其中一句话：没有真正的"理解"，只是算概率（说"你好"后接"吗"的概率高，就生成"你好吗"）。

我记得这和有本写PyTorch的书对深度学习让AI写诗的说法很像，都是看后接什么字概率最高就写哪个字。

那如何用C++实现呢？

可以做一个嵌套map<string,map<string,int> >，保存词汇A后出现词汇B的次数，输出时查询最可能出现的词汇输出，再递归查询。

那就上代码啊！

3.写代码

我打算用struct封装。

struct AI{
    
};

先写一些定义：

string s[1000];//存加载的字符串 
int k=0,l=0;//计数 
string da[1000];map<string,int>mp4;//所有存下的词汇，mp4判断是否出现过
map<string,vector<string> >mp3;//存字符A后出现过的所有字符
map<string,map<string,int> >mp;//重点，mp[s1][s2]表示s1后出现s2的次数
map<string,int>mp2;//求s1出现的次数，输出用
void load(string ss){
	s[++k]=ss;//加载数据
}

看注释，不解释了。

接下来就是~~最难的~~处理数据了。

首先根据load函数可知总共有k个字符串（这不废话），枚举一遍。

s[i].size()在枚举一遍，每个词语记录链接然后又是一堆map记录，我还加了文件读写。（不说了看代码吧）

    void init(){
	    ifstream in("AI_TALK.in");
	    // 读取文件中的数据并初始化映射
	    string word1, word2;
	    while (in >> word1 >> word2) {
	        if (!mp4[word1]) {
	            da[l++] = word1;
	            mp4[word1] = 1;
	        }
	        if (!mp[word1][word2]) {
	            mp3[word1].push_back(word2);
	        }
	        mp[word1][word2]++;
	        mp2[word1]++;
	    }
		ofstream out("AI_TALK.in",ios::app);
		string str="",last="";
		for(int i = 1; i<= k;i++){
			for(int j = 0; j < s[i].size(); j++){
				if(s[i][j]==' '&&last!=""){
					//说明已经是第二个词了，可以存链接了 
					if(!mp4[last]){
						da[l++]=last;
						mp4[last]=1;
						//存词 
					}
					if(!mp[last][str]){
						//没出现这种链接就记录 
						mp3[last].push_back(str);
					}
					out << last << ' ' << str << endl;
					mp[last][str]++;//链接上 
					mp2[last]++;//记录词出现过 
					last=str;str="";//往下做 
				}
				else if(s[i][j]==' '){
					last=str;str="";
					//第一个词，记录 
				}
				else{
					str+=s[i][j];
					//...不好说，自己理解 
				}
			}
			//处理最后的几个词 
			if(!mp[last][str]){
				mp3[last].push_back(str);
			}
			out << last << ' ' << str << endl;
			mp[last][str]++;
			mp2[last]++;
			last=str;str="";
			if(!mp[last][str]){
				mp3[last].push_back(str);
			}
			mp[last][str]++;
			mp2[last]++;
		}
	}

处理了数据就要输出，传入参数开始词汇和期望文章长度，输出开始词汇，枚举寻找出现次数最多的词汇。我输出用的逐字，~~主要是高端大气上档次~~。

    void print(string c,int t){
		for(int i = 0; i < c.size();i++){
			cout << c[i];Sleep(10);
		}
		if(mp2[c]==0){
			//没有后继了 
			return;
		}
		if(t==0){
			//结束了 
			return;
		}
		cout << " ";
		string maxc="";int maxx=-1;
		for(int i = 0; i < mp3[c].size(); i++){
			if(maxx<mp[c][mp3[c][i]]){
				maxx=mp[c][mp3[c][i]];maxc=mp3[c][i];
			}
			else if(maxx==mp[c][mp3[c][i]]){
				srand(time(NULL));
				if(rand()%2==0){
					maxx=mp[c][mp3[c][i]];maxc=mp3[c][i];
				}

			}
		}
		print(maxc,t-1);
		return;
	}

这里面之所以有随机数，是因为不同链接出现的次数可能一样，所以随机一个说下去。

于是我开始了测试。

4.debug

没错，这玩意儿有bug。

做完之后，本着好用就往死里用的精神，我让DeepSeek写了几条数据。

a.load("Twinkle , twinkle , little star , How I wonder what you are ! Up above the world so high , Like a diamond in the sky . When the blazing sun is gone , When he nothing shines upon , Then you show your little light , Twinkle , twinkle , all the night .");
a.load("Last summer , I visited Paris with my family . We saw the Eiffel Tower which was very tall and shiny . The Louvre Museum had famous paintings like Mona Lisa . French croissants tasted buttery and delicious . We took a boat ride on the Seine River at sunset . It was my first trip abroad and I will never forget it .");
a.load("My pet cat Mimi is three years old . She has soft gray fur and green eyes . Every morning , she meows for milk and rubs against my legs . After school , we play with a ball of yarn . Sometimes she climbs trees but gets scared to come down . I love Mimi because she is playful and affectionate .");
a.load("Jupiter is the largest planet in our solar system . It has a Great Red Spot which is actually a giant storm . Galileo discovered Jupiter s four largest moons in 1610 . These moons are called Io , Europa , Ganymede , and Callisto . Jupiter s strong gravity helps protect Earth from asteroids .");
a.load("Roses are red , Violets are blue , Sugar is sweet , And so are you . The sunshine is warm , The sky is so clear , Springtime is here , And summer is near . Flowers will bloom , Birds will all sing , Nature s alive , It s a wonderful thing !");
a.load("During winter break , we went skiing in Canada . The snow covered mountains looked like white giants . I learned to ski on the beginner slopes first . My gloves kept my hands warm in the freezing weather . At night , we drank hot chocolate by the fireplace . I hope we can go again next year !");
a.load("Our school library is my favorite place . There are thousands of interesting books on tall shelves . The librarian Mrs . Smith helps us find good stories . I enjoy reading adventure books and science magazines . Every Friday , we have story time with the kindergarten kids . Reading books makes me happy and smart .");
a.load("Mars is called the Red Planet because of iron oxide on its surface . It has the tallest volcano in the solar system named Olympus Mons . Scientists have sent robots called rovers to explore Mars . Maybe one day humans will live on Mars in special domes . Water ice exists at Mars s poles which could support life .");
a.load("My best friend and I do everything together . We sit next to each other in class and share crayons . During recess , we play hopscotch or jump rope . Sometimes we argue but always make up quickly . On weekends , we ride bikes to the park . Friendship means caring and helping each other always .");
a.load("Astronomers use telescopes to study distant galaxies . The Milky Way contains about 100 billion stars . Black holes have such strong gravity that nothing can escape . Nebulas are colorful clouds of gas where new stars form . Light from the Sun takes 8 minutes to reach Earth .");
a.load("The rainbow arches across the sky , A bridge of colors way up high . Red and orange shine so bright , Yellow like the morning light . Green and blue and purple too , After rain the sky renews . Nature paints with colors bold , A masterpiece for young and old .");
a.load("Our family vacation to Thailand was amazing . We saw golden temples with pointy roofs . Long - tail boats took us to beautiful islands . I tried pad thai and loved its sweet taste . Elephants at the sanctuary ate bananas from my hand . The warm ocean water was perfect for swimming .");
a.load("My classroom has twenty desks and a big whiteboard . We learn math , science , and English every day . During art class we paint with watercolors . The playground has swings , slides , and a soccer field . School teaches me new things and helps me make friends .");
a.load("Saturn s rings are made of ice and rock particles . They stretch over 280 , 000 kilometers wide . Titan , Saturn s largest moon , has lakes of methane . The Cassini spacecraft studied Saturn for 13 years . Saturn is so light it could float in water .");
a.load("Little raindrops on my window , Tap - tap - tapping all day long . Some are fast and some are slow , Singing nature s gentle song . Puddles form upon the ground , Reflecting clouds up in the sky . Soon the sun comes shining round , Making rainbows way up high .");
a.load("Visiting New York City was exciting but busy . We rode to the top of the Empire State Building . Times Square at night glowed with bright lights . Central Park had horse carriages and street performers . The subway trains were crowded but fast . I want to go back to see more museums .");
a.load("Recycling helps protect our planet Earth . We separate paper , plastic , and cans at school . Turning off lights saves electricity . Planting trees gives animals homes . Walking instead of driving reduces pollution . Everyone can help keep nature clean .");
a.load("Venus is the hottest planet in our system . Its thick clouds trap heat like a blanket . A day on Venus is longer than its year . The surface has volcanoes and cracked plains . Venus spins backwards compared to other planets .");
a.load("My grandmother tells the best stories . She remembers when she was a little girl . Her house smells like cookies and lavender . We bake pies together on weekends . She teaches me old songs and games . Grandparents are special because they have so much love .");

~~对，亿条。~~

一测就发现问题了，他的回答长这样。

The surface has volcanoes and a little girl . The surface has volcanoes and a little girl . The surface has volcanoes and a little star , we play with my family . The Louvre Museum had famous paintings like Mona Lisa . The surface has volcanoes and a little girl . The surface has volcanoes and I wonder what you are ! Up above the sky . The Louvre Museum had famous paintings like Mona Lisa . The Louvre Museum had famous paintings like Mona Lisa . The surface has volcanoes and a little girl .

发现了没有？他有很多重复的The surface has volcanoes and a little girl .（不要管他的意思，这个AI比较低级）。

要怎么解决呢？

看下篇吧。

都看到这了，关个注吧，实在不行点个赞。

对了，代码。

#include<bits/stdc++.h>
#include<windows.h>
using namespace std;
const int N=1e5+10;
struct ai{
	string s[N];//存加载的字符串 
	int k=0,l=0;//计数 
	string da[N];map<string,int>mp4;
	map<string,vector<string> >mp3;
	map<string,map<string,int> >mp;
	map<string,int>mp2;
	void load(string ss){
		s[++k]=ss;
	}
	void init(){
	    ifstream in("AI_TALK.in");
	    // 读取文件中的数据并初始化映射
	    string word1, word2;
	    while (in >> word1 >> word2) {
	        if (!mp4[word1]) {
	            da[l++] = word1;
	            mp4[word1] = 1;
	        }
	        if (!mp[word1][word2]) {
	            mp3[word1].push_back(word2);
	        }
	        mp[word1][word2]++;
	        mp2[word1]++;
	    }
		ofstream out("AI_TALK.in",ios::app);
		string str="",last="";
		for(int i = 1; i<= k;i++){
			for(int j = 0; j < s[i].size(); j++){
				if(s[i][j]==' '&&last!=""){
					//说明已经是第二个词了，可以存链接了 
					if(!mp4[last]){
						da[l++]=last;
						mp4[last]=1;
						//存词 
					}
					if(!mp[last][str]){
						//没出现这种链接就记录 
						mp3[last].push_back(str);
					}
					out << last << ' ' << str << endl;
					mp[last][str]++;//链接上 
					mp2[last]++;//记录词出现过 
					last=str;str="";//往下做 
				}
				else if(s[i][j]==' '){
					last=str;str="";
					//第一个词，记录 
				}
				else{
					str+=s[i][j];
					//...不好说，自己理解 
				}
			}
			//处理最后的几个词 
			if(!mp[last][str]){
				mp3[last].push_back(str);
			}
			out << last << ' ' << str << endl;
			mp[last][str]++;
			mp2[last]++;
			last=str;str="";
			if(!mp[last][str]){
				mp3[last].push_back(str);
			}
			mp[last][str]++;
			mp2[last]++;
		}
	}
	void print(string c,int t){
		/*Eglish*/
		for(int i = 0; i < c.size();i++){
			cout << c[i];Sleep(10);
		}
		if(mp2[c]==0){
			//没有后继了 
			return;
		}
		if(t==0){
			//结束了 
			return;
		}
		cout << " ";
		string maxc="";int maxx=-1;
		for(int i = 0; i < mp3[c].size(); i++){
			if(maxx<mp[c][mp3[c][i]]){
				maxx=mp[c][mp3[c][i]];maxc=mp3[c][i];
			}
			else if(maxx==mp[c][mp3[c][i]]){
				srand(time(NULL));
				if(rand()%2==0){
					maxx=mp[c][mp3[c][i]];maxc=mp3[c][i];
				}

			}
		}
		print(maxc,t-1);
		return;
	}
};

int main(){
	ai a;
	
	a.init();srand(time(NULL));
	a.print("The",100);
	return 0;
}

（复制我前面的load）

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