摘要: 創建一個爬蟲項目,以圖蟲網為例抓取裡面的圖片。在頂部菜單“發現” “標籤”裡面是對各種圖片的分類,點擊一個標籤,我們以此作為爬蟲入口,分析一下該頁面

摘要: In this second article on adversarial validation we get to the meat of the matter: what we can do when train and test sets differ. Will we be able to make a better validation set?

摘要: Many data science competitions suffer from a test set being markedly different from a training set (a violation of the “identically distributed” assumption). It is then difficult to make a representative validation set. We propose a method for selecting training examples most similar to test examples and using them as a validation set. The core of this idea is training a probabilistic classifier to distinguish train/test examples.

摘要: 我們在處理資料時,為了萃取資料的重要資訊常常會使用主成份分析,不過有時候卻難以解釋主成分分析的結果與成因。此篇教導了主成份分析的視覺化方法,可以有效地幫助我們了解並給予主成份分析背後的意義

摘要: R語言翻轉教室,是作者參考社群多次開辦R教學的心得,撰寫出來的一份「自學教材」、 「自學教材」、「自學教材」。 有興趣的版友可以到官網上去安裝課程與進行教材。這份教材也具有挑戰性,沒有程式基 礎的版友做完一次約12 ~ 18小時。有經驗的版友大約是6 ~12小時,並不輕鬆。

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