# Data-mining-final
数据挖掘机期末大挖掘。
## Problem 1 数据筛选
已完成。
### Usage
```bash
cd Step1
python filter_data.py
```
然后会生成ratings_test.txt, ratings_train.txt,分别是测试集和训练集数据,
单行数据用半角逗号分离,格式如下:
```
用户ID,电影ID,评级,时间戳
```
## Problem 2 Recommendation 推荐算法
### Usage
执行顺序:
1. 初始化(step1_init.m)【不推荐直接运行,请下载该步骤的<a href="http://pan.baidu.com/s/1qXsR3n2">缓存数据</a>,放在Problem2文件夹下】
2. 使用item-based baseline estimator预测(step1.m)。
3. 初始化Step2(step2_init.m)【不推荐直接运行,请下载该步骤的<a href="http://pan.baidu.com/s/1hqYjhxa">缓存数据</a>,放在Problem2文件夹下】
4. 使用item-based neighbour estimator预测(step2_1.m)。
5. 使用user-based neighbour estimator预测(step2_2.m)。
6. 使用incorporating temporal dynamics estimator预测(step3.m)。
### 生成的csv
自带的ratings_train.csv和ratings_test.csv就是第一步生成的txt改个后缀名而已。
执行以上步骤后会生成以下csv文件,分别为:
1. baseline_predict.csv
2. neighbour_predict_1.csv
3. neighbour_predict_2.csv
4. incorporating_temporal_dynamics_predict.csv
### 生成的格式化预测结果
1. baseline_predict.dat
2. neighbour_item_predict.dat
3. neighbour_user_predict.dat
4. temporal_dynamics_predict.dat
格式如下:
```
用户ID::电影ID::预测评级::时间戳
```
每行格式为:
预测值,真实值,方差,从第一行开始的均方差
## Problem 3 K-means Clustering K-means聚类
TODO
## Problem 4
TODO
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基于MATLAB实现的数据挖掘机期末大挖掘+使用说明文档.zip
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共38个文件
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csv:10个
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CSDN IT狂飙上传的代码均可运行,功能ok的情况下才上传的,直接替换数据即可使用,小白也能轻松上手 【资源说明】 基于MATLAB实现的数据挖掘机期末大挖掘+使用说明文档.zip 1、代码压缩包内容 主函数:main.m; 调用函数:其他m文件;无需运行 运行结果效果图; 2、代码运行版本 Matlab 2020b;若运行有误,根据提示GPT修改;若不会,私信博主(问题描述要详细); 3、运行操作步骤 步骤一:将所有文件放到Matlab的当前文件夹中; 步骤二:双击打开main.m文件; 步骤三:点击运行,等程序运行完得到结果; 4、仿真咨询 如需其他服务,可后台私信博主; 4.1 期刊或参考文献复现 4.2 Matlab程序定制 4.3 科研合作 功率谱估计: 故障诊断分析: 雷达通信:雷达LFM、MIMO、成像、定位、干扰、检测、信号分析、脉冲压缩 滤波估计:SOC估计 目标定位:WSN定位、滤波跟踪、目标定位 生物电信号:肌电信号EMG、脑电信号EEG、心电信号ECG 通信系统:DOA估计、编码译码、变分模态分解、管道泄漏、滤波器、数字信号处理+传输+分析+去噪、数字信号调制、误码率、信号估计、DTMF、信号检测识别融合、LEACH协议、信号检测、水声通信 5、欢迎下载,沟通交流,互相学习,共同进步!
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