´¹¤åºK

[¤H¤u´¼¼z] ¨¾¶B´Û¼Ò«¬À³¥Î¹ê§@

µ¹´¹·s»D¤@­ÓÆg



¨¾¶B´Û¼Ò«¬À³¥Î¹ê§@


§@ªÌ: ®L»F¼Ý

ªì½Z: 20220820


 

Search:  ¨¾¶B´Û¼Ò«¬ python


¾aAI§êºtÃa¤H¨Ó½m§L¡ISAS´¦ÅS¥ÎGAN³]­pª÷¿Ä¨¾¶B´Û¼Ò«¬ªº·s ...

https://www.ithome.com.tw › news

 

 

¨BÆJ¤@¡Bºc«ØAmazon Fraud Detector ¼Ò«¬

https://pages.awscloud.com › Tech-blog_Amazon-Frau...

 

Search:  ¶B´Û python

 

python «H¥Î¥d´Û¶B¼Ò«¬«Ø¥ß - µ{¦¡¤H¥Í

https://www.796t.com › content

¸ê®Æ·Ç³Æ: ¨Ó·½©óKaggle

·Ç³Æ¨Ãªì¨BÀ˵ø¸ê®Æ¶°

®É¶¡§Ç¦C¤Uªº¥æ©öµo¥ÍÀW²v¡]¤À¬°¶BÄF©M¥¿±`¡^

¶BÄF©M¥¿±`¥æ©ö¥æ©öª÷ÃBªºÀW²v¤À§G

¦U¯S¼x©M¦]ÅܼƪºÃö«Y

¥ÎÅÞ¿è°jÂk¤èªk¹ï«H¥Î¥d¸ê®Æ¶i¦æ«Ø¼Ò¤ÀªR

 

 

«H¥Î¥d¶BÄF¤ÀªR-¤£¥­¿Å¸ê®Æ¤ÀªR»P³B²zkernel½Ķ-§¹¾ãª©

https://medium.com › ¾÷¾¹¾Ç²ßª¾ÃѾúµ{ › «H¥Î¥d¶BÄF...

¹w³B²z

ÁY©ñ©M¤À°t Scaling and Distributing

©î¤À¼Æ¾Ú Splitting the Data¡]±q­ì©lDataFrame¡^

ÀH¾÷¤í±Ä¼Ë©M¹L±Ä¼Ë

¤À§G©M¬ÛÃö©Ê Distributing and Correlating

²§±`ÀË´ú Anomaly Detection

­°ºû©M¤À¸s Dimensionality Reduction and Clustering (t-SNE)

¤ÀÃþ¾¹ Classifiers

§ó²`¤J¦a¤F¸ÑÅÞ¿è¦^Âk A Deeper Look into Logistic Regression

¨Ï¥ÎSMOTE¶i¦æ¹L±Ä¼Ë Oversampling with SMOTE

´ú¸Õ

¨Ï¥ÎÅÞ¿è¦^Âk¶i¦æ´ú¸Õ Test Data with Logistic Regression

¯«¸gºôµ¸´ú¸Õ¡]¤í±Ä¼Ë»P¹L±Ä¼Ë¡^Neural Networks Testing (Undersampling vs Oversampling)

 

Part 5. Imbalanced Data ¤£¥­¿Å¸ê®Æ - iT ¨¹À°¦£

https://ithelp.ithome.com.tw › articles

µû¦ô«ü¼Ð

Confusion Matrix ²V²c¯x°}

Precision and Recall ºë½T²v»P¥l¦^²v

F1 score

ROC(Receiver Operating Characteristic) ±µ¦¬ªÌ¾Þ§@¯S¼x¦±½u

¦±½u¤U­±¿nºÙ Area Under Curve (AUC)

 ­«²Õ¸ê®Æ

Oversampling ¹L±Ä¼Ë

SMOTE  (Synthetic Minority Oversampling Technique)

Border Line SMOTE

Undersampling ¤í±Ä¼Ë

Tomek Link

Edited Nearest Neighbor

ª`·N¨Æ¶µ

¥ý¤Á¤À¸ê®Æ¡A¦A¹ï°V½m¸ê®Æ±Ä¼Ë¡C

±`³z¹L¥æ¤eÅçÃÒ±±¨î¹LÀÀ¦X¡C

Æ[¹î¤Ö¼Æ¼Ë¥»»P¦h¼Æ¼Ë¥»¤À¥¬±¡§Î¡C

 

SMOTE + ENN : ¸Ñ¨M¼Æ¾Ú¤£¥­¿Å«Ø¼Òªº±Ä¼Ë¤èªk - Medium

https://medium.com › ¼Æ¾Ç-¤H¤u´¼¼z»PÁ¯³D › smote-e...

¤G¤ÀÃþ¼Ò«¬ªºµû¦ô«ü¼Ð

¡i²V²c¯x°} Confusion Matrix¡j

¡iºë½T«×»P¥l¦^²v Precision and Recall¡j

¡iF1 ¤À¼Æ F1-Score¡j

¡iROC ¤À¼Æ / ¦±½u¡j

¹L±Ä¼Ë¤èªk : Synthesized Minority Oversampling Technique (SMOTE)

¡iSMOTE ¤èªk : ¦X¦¨¤Ö¼Æ¹L±Ä¼Ë¤èªk¡j

¡iBorder Line SMOTE ¤èªk¡j

¤í±Ä¼Ë¤èªk : Edited Nearest Neighbor

¡iEdited Nearest Neighbor¡AENN ºâªk¡j

¡iµ²¦X¹L±Ä¼Ë»P¤í±Ä¼Ëºâªk¡j

µ²§À : ¤£¥­¿Å¼Æ¾Ú¶°¤ÀÃþ«Ø¼Ò¬yµ{



Search:  Credit Fraud || Dealing with Imbalanced Datasets

 

Credit Fraud || Dealing with Imbalanced Datasets - Kaggle

https://www.kaggle.com › janiobachmann

 

Credit Fraud || Dealing with Imbalanced Datasets

https://www.kaggle.com/janiobachmann/credit-fraud-dealing-with-imbalanced-datasets

 

https://www.kaggle.com/code/janiobachmann/credit-fraud-dealing-with-imbalanced-datasets/notebook

«H¥Î´Û¶B±´´ú¾¹

¤@¡B¤F¸Ñ§Ú­Ìªº¼Æ¾Ú

a) [¦¬¶°§Ú­Ìªº¼Æ¾Úªº·Pı]

¤G¡B¹w³B²z

a) ÁY©ñ©M¤À§G

b) ©î¤À¼Æ¾Ú

¤T¡BÀH¾÷¤í±Ä¼Ë©M¹L±Ä¼Ë

a) ¤À§G©MÃöÁp

b) ²§±`ÀË´ú

c) ­°ºû©M»EÃþ¡]t-SNE¡^

d) ¤ÀÃþ¾¹

e) §ó²`¤J¦a¬ã¨sÅÞ¿è¦^Âk

f) ¨Ï¥Î SMOTE ¹L±Ä¼Ë

¥|¡C´ú¸Õ

a) ¨Ï¥ÎÅÞ¿è¦^Âk¶i¦æ´ú¸Õ

b) ¯«¸gºôµ¸´ú¸Õ¡]¤í±Ä¼Ë»P¹L±Ä¼Ë¡^

 

±q¤£¥­¿Åªº¼Æ¾Ú¶°¤¤ªÈ¥¿¥H«eªº¿ù»~¡G

¥Ã»·¤£­n¹ï¹L±Ä¼Ë©Î¤í±Ä¼Ëªº¼Æ¾Ú¶°¶i¦æ´ú¸Õ¡C

¦pªG§Ú­Ì·Q¹ê²{¥æ¤eÅçÃÒ¡A½Ð°O¦í¦b¥æ¤eÅçÃÒ´Á¶¡¹ï°V½m¼Æ¾Ú¶i¦æ¹L±Ä¼Ë©Î¤í±Ä¼Ë¡A¦Ó¤£¬O¤§«e¡I

¤£­n¨Ï¥Î·Ç½T©Ê¤À¼Æ§@¬°¼Æ¾Ú¶°¤£¥­¿Åªº«ü¼Ð¡]³q±`·|«Ü°ª¥B¨ã¦³»~¾É©Ê¡^¡A¦Ó¬O¨Ï¥Î f1-score¡Bprecision/recall ¤À¼Æ©Î²V²c¯x°}

 

 

Search:  DEALING WITH IMBALANCED DATA: UNDERSAMPLING, OVERSAMPLING AND PROPER CROSS-VALIDATION

undersampling, oversampling and proper cross-validation

https://www.marcoaltini.com › blog › dea...

½Ķ³o­Óºô­¶

2015¦~8¤ë17¤é — undersampling the majority class. One of the most common and simplest strategies to handle imbalanced data is to undersample the majority class.

 

 

Search: 

https://github.com/marcoalt/Physionet-EHG-imbalanced-data

 

 

 

Search:  ²§±`ÀË´ú wiki

²§±`ÀË´ú- ºû°ò¦Ê¬ì¡A¦Û¥Ñªº¦Ê¬ì¥þ®Ñ

https://zh.wikipedia.org › zh-tw › Éݱ`??

²§±`ÀË´ú[½s¿è] ... ¦b¸ê®Æ±´°É¤¤¡A²§±`ÀË´ú¡]­^»y¡Ganomaly detection¡^¹ï¤£²Å¦X¹w´Á¼Ò¦¡©Î¸ê®Æ¶°¤¤¨ä¥L±M®×ªº±M®×¡B¨Æ¥ó©ÎÆ[´ú­Èªº¿ëÃÑ¡C ... ³q±`²§±`±M®×·|ÂàÅܦ¨»È¦æ´Û¶B ...

 


Search:  SMOTE ¹L±Ä¼Ë wiki

Oversampling and undersampling in data analysis - Wikipedia

https://en.wikipedia.org › wiki › Oversampling_and_unde…


Search:  Confusion Matrix wiki

Confusion matrix - Wikipedia

https://en.wikipedia.org › wiki › Confusi...

½Ķ³o­Óºô­¶ https://en-m-wikipedia-org.translate.goog/wiki/Confusion_matrix?_x_tr_sl=en&_x_tr_tl=zh-TW&_x_tr_hl=zh-TW&_x_tr_pto=sc

Search:  ºë½T²v ¥l¦^²v wiki

ºë½T²v¦P¥l¦^²v - ºû°ò¦Ê¬ì

https://zh-yue.wikipedia.org › wiki › ºë½T²v¦P¥l¦^²v

 

Search:  F1 score wiki

F-score - ºû°ò¦Ê¬ì¡A¦Û¥Ñªº¦Ê¬ì¥þ®Ñ

https://zh.m.wikipedia.org › zh-tw › F-score

Search:  ROC AUC wiki

ROC¦±½u- ºû°ò¦Ê¬ì¡A¦Û¥Ñªº¦Ê¬ì¥þ®Ñ - Wikipedia

https://zh.m.wikipedia.org › zh-tw › ROC¦±?

Search:  bin_goods bin_bads

­·±±«Ø¼Ò¨t¦C¤§¼Æ¾Ú¯S¼x¿z¿ï¤èªkÁ`µ²¡]¤W¡^ - ³üŪ

https://read01.com › ¬ì§Þ › ¬ì¾Ç

... ¥Î©óµû¦ô¯S¼xªº¹w´ú¯à¤O,IV¬O¦bwoeªº°ò¦¤W­pºâªº¡A¦b¶i¦æwoe½s½X«e¡A»Ý­n¹ï¯S¼x°µ¤À½c³B²z(Â÷´²¤Æ)¡AµM«á­pºâ¨C­Ó½cÅ餺ªº¦n¤H¼Æ(bin_goods)©MÃa¤H¼Æ(bin_bads), ...