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这一篇彻底学会机器学习模型调用!(附学习资料)

  • 2026-03-07 08:20:46
这一篇彻底学会机器学习模型调用!(附学习资料)
对于很多刚刚开始学习机器学习的同学来说，对于机器学习理论已经都了解了，但可能还不知道怎么使用机器学习模型
现在关于机器学习模型的使用门槛已经降低很多了，不需要精通Python语法，很多Python库都把一些常用的模型已经封装好了，只需要导入相应的库和调用即可
这一篇主要是给大家如何正确使用机器学习最好用的Python库：sklearn
大部分内容过一遍就行，不需要特别记忆，可以当做字典，有需要的时候查阅一下
下面具体来介绍一下这个Python库：
第一节：数据预处理
这一部分主要是介绍机器学习中，对于数据如何进行处理的内容。具体内容包括特征处理，机器学习特征选择，字典学习还有机器学习数据处理的整个流程介绍，了解这个处理流程很重要，大部分机器学习任务都是这一个处理流程
第二节：降维
这一部分主要介绍机器学习中各种降维技术，机器学习任务中，由于特征太多了，需要对特征进行降维，以及减少特征共线性的问题，影响模型的效果，这一部分技术主要包括PCA, MDS, Isomap, FA和FastICA等
第三节：监督学习模型
这一部分主要介绍机器学习中各种监督模型，想要调用机器学习模型就看这一部分，主要的模型包括线性模型，支持向量机，贝叶斯模型，决策树算法，KNN，AdaBoost，梯度提升树和随机森林等
第四节：模型评估
这一部分主要介绍模型评估相关的内容，训练好机器学习模型，还需要通过评测手段来验证这个模型效果，包括数据集切分，性能度量指标，验证曲线和学习曲线，最后是超参数优化的技巧
第五节：聚类模型
聚类是无监督问题，这一类模型是没有标签的，需要通过聚类结果来确定各种类别，注意区别于分类问题，主要的聚类算法包括K-means, DBSCAN, MeanShift, BIRCH, 高斯混合，频谱聚类等
第六节：半监督和HMM
最后一个部分是关于半监督学习，半监督学习的目标就是，利用少量有标签数据和大量无标签数据，训练出比仅用少量标签数据更好的模型，HMM模型是非常经典的机器学习模型，经常应用于解决存在状态转移的问题中
上面的内容难度都不大，可以通过调用相关的接口就完成机器学习模型的搭建，训练和评估，sklearn真的是一个宝藏库，这个sklearn的说明手册可以作为字典使用，忘记的时候查看一下就行
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1. 关注本公众号
2. 发送口令“sklearn”领取（人工回复可能有时差，都会发给大家的，不用着急
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  136. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-template/src/Template.php ( 46.61 KB )
  137. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/no.67808.cn/runtime/temp/6df755f970a38e704c5414acbc6e8bcd.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000602s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000919s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000370s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000268s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000465s ]
  6. SELECT * FROM `set` [ RunTime:0.000649s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000575s ]
  8. SELECT * FROM `article` WHERE `id` = 472786 LIMIT 1 [ RunTime:0.000740s ]
  9. UPDATE `article` SET `lasttime` = 1772853206 WHERE `id` = 472786 [ RunTime:0.004237s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000260s ]
  11. SELECT * FROM `article` WHERE `id` < 472786 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000465s ]
  12. SELECT * FROM `article` WHERE `id` > 472786 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000511s ]
  13. SELECT * FROM `article` WHERE `id` < 472786 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002161s ]
  14. SELECT * FROM `article` WHERE `id` < 472786 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001263s ]
  15. SELECT * FROM `article` WHERE `id` < 472786 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001741s ]
0.086961s