Why does purchase_amount have many values less than 0, and purchase_amount is less than 0 and greater than 0 represents two different transaction states? What is the difference between greater than 0 and less than 0, is the problem of creating fake data? Who can answer me, thank you
", "messages": [ { "id": "457738", "postDate": "01/18/2019 02:14:31", "content": "Why does purchase_amount have many values less than 0, and purchase_amount is less than 0 and greater than 0 represents two different transaction states? What is the difference between greater than 0 and less than 0, is the problem of creating fake data? Who can answer me, thank you
", "rawMarkdown": "Why does purchase_amount have many values less than 0, and purchase_amount is less than 0 and greater than 0 represents two different transaction states? What is the difference between greater than 0 and less than 0, is the problem of creating fake data? Who can answer me, thank you", "votes": null }, { "id": "457743", "postDate": "01/18/2019 02:28:36", "content": "Probably because the purchase amount is actually a standard normalized purchase amount.. the zeros and negatives here have another interpretation, they all become positive numbers when \"unnormalized\"
", "rawMarkdown": "Probably because the purchase amount is actually a standard normalized purchase amount.. the zeros and negatives here have another interpretation, they all become positive numbers when \"unnormalized\"", "votes": null }, { "id": "457758", "postDate": "01/18/2019 03:46:27", "content": "As you said, is the meaning of the purchase_amount feature meaningless? I still don't understand.
", "rawMarkdown": "As you said, is the meaning of the purchase_amount feature meaningless? I still don't understand.", "votes": null }, { "id": "458209", "postDate": "01/19/2019 04:53:22", "content": "If the ’purchase_amount’ is negative or positive, the distribution of 'installments' will be somewhat different.\nI do not know if it is useful, but I am thinking of trying these feature engineering.
", "rawMarkdown": "If the ’purchase_amount’ is negative or positive, the distribution of 'installments' will be somewhat different.\nI do not know if it is useful, but I am thinking of trying these feature engineering.", "votes": null }, { "id": "458291", "postDate": "01/19/2019 09:07:29", "content": "I am confused with this problem too.
", "rawMarkdown": "I am confused with this problem too.", "votes": null }, { "id": "459030", "postDate": "01/21/2019 03:44:55", "content": "I think that positive and negative values have specific business meanings. You can also find that by creating features.
", "rawMarkdown": "I think that positive and negative values have specific business meanings. You can also find that by creating features.", "votes": null } ], "comments": [ { "id": 457743, "author_name": "camaradaancap", "author_url": "", "post_date": "01/18/2019 02:28:36", "content": "Probably because the purchase amount is actually a standard normalized purchase amount.. the zeros and negatives here have another interpretation, they all become positive numbers when \"unnormalized\"
", "votes": null, "replies": [ { "id": 457758, "author_name": "banfenqian", "author_url": "", "post_date": "01/18/2019 03:46:27", "content": "As you said, is the meaning of the purchase_amount feature meaningless? I still don't understand.
", "votes": null, "replies": [] }, { "id": 458209, "author_name": "hatunina", "author_url": "", "post_date": "01/19/2019 04:53:22", "content": "If the ’purchase_amount’ is negative or positive, the distribution of 'installments' will be somewhat different.\nI do not know if it is useful, but I am thinking of trying these feature engineering.
", "votes": null, "replies": [] } ] }, { "id": 458291, "author_name": "longyin2", "author_url": "", "post_date": "01/19/2019 09:07:29", "content": "I am confused with this problem too.
", "votes": null, "replies": [ { "id": 459030, "author_name": "banfenqian", "author_url": "", "post_date": "01/21/2019 03:44:55", "content": "I think that positive and negative values have specific business meanings. You can also find that by creating features.
", "votes": null, "replies": [] } ] } ], "raw_markdown_by_id": { "457738": "Why does purchase_amount have many values less than 0, and purchase_amount is less than 0 and greater than 0 represents two different transaction states? What is the difference between greater than 0 and less than 0, is the problem of creating fake data? Who can answer me, thank you", "457743": "Probably because the purchase amount is actually a standard normalized purchase amount.. the zeros and negatives here have another interpretation, they all become positive numbers when \"unnormalized\"", "457758": "As you said, is the meaning of the purchase_amount feature meaningless? I still don't understand.", "458209": "If the ’purchase_amount’ is negative or positive, the distribution of 'installments' will be somewhat different.\nI do not know if it is useful, but I am thinking of trying these feature engineering.", "458291": "I am confused with this problem too.", "459030": "I think that positive and negative values have specific business meanings. You can also find that by creating features." }, "source": "meta" }