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Position: 吳俊逸 > Latest Articles
by 吳俊逸 2018-06-20 23:10:34, Reply(0), Views(626)
Ref from: https://intellipaat.com/blog/data-scientist-vs-data-analyst/Data Science has grown tremendously in this century that one has to search in which field it is not being used. Healthcare, cyber security, banking, online retail, finance, SEO, digital marketing, and many other fields use Data Science in their businesses. Do you know that Bank of America finds out which loan borrowers would most likely default on their payments with a very high accuracy rate? In the organizational setup, there are many roles in Data Science like Data Scientist and Data Analyst. Both of the roles may seem the same to you but keep reading as we clearly differentiate between the two.Comparison of skills required for Data Scientist and Data AnalystCriteriaData ScientistData AnalystLanguages requiredLanguages like Pig, Hive, Matlab, Scala, SAS, SQL, Python, R need to be learntLanguages like Python, HTML, Javascript, R, SQL need to be learntSpecializationData visualization and expounding business stories to other teams in the organizationSpecialization in data visualization tools like Qlikview, Tableau, MSBIHadoop expertiseStrong knowledge to work around distributed storage and computing frameworks like HadoopIt’s not really necessaryAI skillsMachine learning conceptsNot required 
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by 吳俊逸 2018-05-29 14:47:44, Reply(0), Views(1874)
Training and Testingy_data=df['price']x_data=df.drop('price',axis=1) #drop price data in x datafrom sklearn.model_selection import train_test_splitx_train, x_test, y_train, y_test = train_test_spl
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by 吳俊逸 2018-05-23 14:16:46, Reply(0), Views(1653)
建立 DataFrame DataFrame 用來處理結構化(Table like)的資料,有列索引與欄標籤的二維資料集,可以透過 Dictionary 或是 Array 來建立,但也可以利用外部的資料來讀取後來建立,例如: CSV 檔案、資料庫等等。DataFrame 的操作 ❖ 資料描述查看 可以透過下列方法查看目前資料的資訊
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by 吳俊逸 2018-05-20 10:43:54, Reply(0), Views(680)
Job Description
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by 吳俊逸 2018-05-20 10:41:22, Reply(0), Views(600)
Job Description
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by 吳俊逸 2018-05-16 09:18:57, Reply(0), Views(2730)
Doc2Vec 或者叫做 paragraph2vec, sentence embeddings,是一种非监督式算法,可以获得 sentences/paragraphs/documents 的向量表达,是 word2vec 的拓展。
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by 吳俊逸 2018-05-16 09:13:08, Reply(0), Views(2362)
REF: https://medium.com/pyladies-taiwanword2vec 是 Google 的一個開源工具,能夠根據輸入的「詞的集合」計算出詞與詞之間的距離。它將「字詞」轉換成「向量」形式,可以把對文本內容的處理簡化為向量空間中的向量運算,計算出向量空間上的相似度,來表示文本語義上的相似度。The amazing power of word vectorsword2vec 計算的是餘弦值 (cosine),距離範圍為 0–1 之間,值越大代表兩個詞關聯度越高。詞向量:用 Distributed Representation 表示詞,通常也被稱為「Word Representation」或「Word Embedding」。簡言之:詞向量表示法讓相關或者相似的詞,在距離上更接近。本次使用資料集搜狗實驗室的新聞文本 (完整版 648MB、tar.gz 格式);建議第一次使用迷你版 ( 110KB ),但要記得下載 tar.gz 格式的資料集,因示範程式碼是以此格式做清理。下載連結
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by 吳俊逸 2018-05-09 10:36:03, Reply(0), Views(595)
Job Location: Santa Clara, CA
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by 吳俊逸 2018-04-30 00:41:05, Reply(0), Views(613)
2018年國際玻璃技術大展(Glasstec 2018)預定於10月在德國杜塞道夫舉行,本次主題將鎖定讓玻璃產業轉型為智慧工廠的初步成果,其中包括自動化如何改變製程以及玻璃產業轉型也需要政策配合。
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by 吳俊逸 2018-04-21 15:33:45, Reply(0), Views(574)
美國Salary.com網站調查,僅37%的人將爭取加薪視為理所當然,但卻有18%的人從未要求過。但為自己的好表現爭取更高的薪水,本來就是天經地義的事,
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