數據科學新手必備5大速查表

Ai




五份數據科學入門速查表

這裡有五份由KDnuggets設計的速查表,專為數據科學初學者而設,涵蓋從基本編碼到數據清理、探索、操作及建模的各個方面。

數據科學實踐的重要性

在數據科學的實踐中,快速獲取基本概念和命令的能力,可以大大提高工作效率。無論你是剛入門的初學者,還是希望尋找可靠參考的經驗豐富的從業者,速查表都是你編碼旅程中不可或缺的夥伴。這份精心策劃的KDnuggets獨家速查表,涵蓋了現代數據科學的五個基本領域,從程式設計的角度來看,包括Python控制流、Python字符串處理、SQL、Pandas和Scikit-learn。

這些速查表旨在陪伴你踏上數據科學之旅,從基本的編程概念開始,逐步深入到數據操作、數據庫查詢和機器學習。無論你是在撰寫你的第一個Python腳本,還是對機器學習模型進行微調,這些參考資料將幫助你更高效地導航技術領域。獲得一份包含實用語法範例的參考資料,讓你在學習過程中事半功倍。

1. Python控制流

控制流——指導代碼執行的方式和時間——是編程的基礎。它將簡單的命令列表轉變為複雜的算法,通過確定代碼運行的順序和條件來實現。Python和其他現代語言一樣,提供了複雜的控制流模式。Python特別直觀易讀的方式來管理代碼執行,通過循環、條件語句和函數等結構來實現。理解這些控制結構對於程序員和實用的數據科學家來說至關重要,因為它們是創建從簡單腳本到複雜應用程序的基石。無論你是剛開始學習還是需要快速參考,掌握Python的控制流機制是撰寫有效代碼的關鍵。

2. Python字符串處理

雖然自然語言處理和文本分析在數據科學中占據了重要地位,但掌握基本的字符串操作是邁向成功的第一步。高級文本分析可能會使用複雜的算法和工具,但在基本層面上處理和操作文本的能力仍然至關重要。這項技能不僅對文本分析項目的數據準備階段至關重要,還能幫助你理解計算機如何在基本層面上處理文本,從而為更複雜的自然語言處理概念提供重要見解。

3. SQL入門

SQL(結構化查詢語言)可以說是數據科學家工具箱中最重要的工具,因為它是訪問數據的關鍵。雖然機器學習、統計和Python對於分析至關重要,但如果沒有數據可供操作,它們就毫無用處。SQL是關聯數據庫的通用語言,許多組織在這些數據庫中存儲了寶貴的信息。要建立模型、創建可視化或獲取見解,首先需要提取正確的數據。SQL是數據存儲位置與實際分析開始之間的橋樑。

4. Pandas入門

Pandas是Python中數據操作的基石庫。它是數據科學家處理表格數據的首選工具,提供了豐富的數據處理、分析和轉換功能。無論你是在探索數據集、運行複雜查詢,還是準備數據以用於機器學習模型,Pandas都提供了高效且直觀的解決方案。其廣泛應用、全面功能和靈活性使其成為任何與數據相關工作中必不可少的工具。

5. Scikit-learn機器學習

如果你已經掌握了Python的基本知識,準備深入機器學習領域,那麼Scikit-learn是你的自然起點。這個全面的開源庫通過統一界面簡化了預測數據分析。從分類和回歸到聚類和模型優化,Scikit-learn提供了一個一致的框架來實現機器學習算法。一旦你掌握了它的實現模式,幾乎可以處理任何機器學習任務。你所需要的,只是一份好的參考指南和你自己的探索好奇心。

總結

從Python的基礎控制結構到使用Scikit-learn進行的高級機器學習,這五份速查表涵蓋了現代數據科學工作的基本工具包。通過掌握這些工具,並隨時備有這些參考資料,你將能夠有效應對各種數據科學挑戰,從數據準備和探索到構建預測模型。這些速查表不僅僅是語法參考,它們還幫助你理解驅動當今數據驅動解決方案的核心技術。

在當今這個數據驅動的時代,數據科學的學習和應用變得越來越重要。這些速查表為初學者提供了一個良好的起點,讓他們在這個領域中獲得信心和技能。隨著技術的快速發展,持續學習和適應新工具、新技術將是未來數據科學家的必經之路。

以上文章由特價GPT API KEY所翻譯及撰寫。而圖片則由FLUX根據內容自動生成。

🎨 Nano Banana Pro 圖像生成器|打幾句說話就出圖

想畫人像、產品圖、插畫?SSFuture 圖像生成器支援 Flux Gemini Nano Banana Pro 改圖 / 合成, 打廣東話都得,仲可以沿用上一張圖繼續微調。

🆓 Flux 模型即玩,不用登入
🤖 登入後解鎖 Gemini 改圖
📷 支援上載參考圖再生成
⚡ 每天免費額度任你玩
✨ 即刻玩 AI 畫圖
Create a sticker set maintaining 100% of the woman's original facial features from the provided image. Do not alter the face, focusing on ultra-realistic details of the facial structure, eyes, eyebrows, nose, mouth, and expression. The final face must be realistic, not cartoon-like. She has long, voluminous hair.
1. Makeup:Maintain Original Face: We will preserve the structure of your face, eyes, eyebrows, nose, mouth, and expression as closely as possible to the original image to maintain naturalness and uniqueness, while adjusting the tone to be softer:

Eyes: Slightly reduce the sharpness of the Cat Eye eyeliner to a thin line close to the lash line for a softer look, while still maintaining eye definition.
Eyeshadow: Use natural tones like light brown, peach, or beige.
Eyebrows: Original shape, but brushed up to look softer and more natural.
Lips: Glossy, pink-tinted, nude-pink, or coral-toned lipstick/tint to make the lips look full and moisturized. Focus on a bright but not overly intense look.
2. Hairstyle:Natural Voluminous Long Hair: Her hair is long and flowing, but the styling will emphasize natural volume and movement. Soft, natural waves.
3. Outfit:

Attire: A white open-back bodysuit paired with distressed, faded blue denim shorts. There is a message "Kunika" on the shirt.
Shoes: Elegant, simple open-toe flat sandals.
Accessories: Styled freely and fittingly for each scene.
4. Poses & Sticker Elements:Poses: Various poses such as waving, jumping, walking playfully, reading a book, holding up a sign, cheering with both hands, stretching, or making a celebratory gesture, to create a cheerful and friendly atmosphere.Decoration: Include elements like small rainbows, sparkling stars, clear bubbles, hearts, balloons, or light-colored dots to decorate and enhance the fun of each sticker scene.Style: Thin black border around the sticker. Use a modern, rounded 'Itim' style font for the text.Text: Add short emotional phrases written in a cute, beautiful script near the sticker (no speech bubbles/text boxes):

"Hello"
"Love you"
"Submitting work"
"Great"
"Got it"
"Thanks!"
"Wait a sec"
"Ready to care"
"Fight"
"Let's do it"
"So cute"
"OK"
"Sweet dreams:
"Get well soon"
"555"
"You're welcome"
"HBD" 
"OMG" 
"Sorry"
"Got a headache" 
Guidelines: Do not include a text box. Ensure balanced composition with sufficient white space—not cluttered. Match the pose to the text.
Emphasis: Reiterate 'maintain 100% of the original face features from the provided image,' 'ultra-realistic facial detail,' and 'professional studio lighting on face (realistic face, not cartoon face).

Use Cantonese in the stickers. Prompt (Enhanced, Artistic & Detailed):

A young Asian female inspired by "Imada Mio's" delicate doll-like aesthetic (精緻洋娃娃臉), featuring extraordinarily large, round, and soulful eyes with subtle brown irises, framed by long fluttering lashes. Her face is petite and exquisitely shaped with a defined V-line jaw, soft rosy cheeks flushed with youthful vitality, and plush, natural lips softly parted in a gentle, innocent yet slightly flirtatious expression. Her complexion is luminous and porcelain-smooth.

Her hair is long, dark chocolate brown, and styled in an artfully messy “just woke up” look (剛睡醒的凌亂感), with tousled waves and a touch of natural volume that frames her face and cascades down her shoulders, effortlessly blending wildness and charm.

She wears an oversized, semi-sheer white button-down shirt in a borrowed-from-the-boyfriend style (男友風白襯衫); the shirt slips loosely off her slim shoulders, unbuttoned at the top to reveal graceful collarbones and a hint of décolleté. The hem of the shirt falls mid-thigh, creating a tasteful "bottomless" look (下衣失蹤風格), her bare legs just visible beneath the diaphanous fabric, enhancing a pure yet subtly sexy visual impact.

The image is rendered with a high-key, natural daylight aesthetic reminiscent of Japanese gravure photobooks (寫真集風格): bright, airy lighting softly illuminates her features, casting gentle highlights and diffuse shadows for a dreamy, ethereal effect. Skin is rendered creamy and velvety with impeccable smoothness. The color palette echoes Fujifilm PRO 400H—soft, milky tones with delicate pastels, gentle greens, natural skin, and a nostalgic film grain that adds warmth and authenticity, evoking an elegant, fresh, and intimate atmosphere.

She is posed naturally, perhaps seated on light bed linens or by a sunlit window, exuding a blend of youthful innocence, pure allure, and quiet confidence. Hyper-detailed, cinematic composition, fine-tuned for photorealism yet with a subtle artistic charm. A whimsical, artistic scene set in a classic Hong Kong cha chaan teng (茶餐廳): A charming cat sits comfortably at a small table, elegantly sipping a traditional Hong Kong-style milk tea from a delicate glass. The cat's fur is soft and expressive, and its posture is relaxed yet attentive, suggesting it is a regular at the tea shop. The restaurant interior is bustling yet cozy, adorned with retro posters, old ceiling fans, patterned floor tiles, and Formica tables reflecting the local culture. Sunlight streams through the window, casting warm highlights on the cat and creating a vivid play of shadows. Details include steaming milk tea cups, egg tarts and pineapple buns on the table, and waiters in classic uniforms moving in the background. The overall color palette is rich and atmospheric, blending nostalgia with the lively charm of Hong Kong.

發佈留言

發佈留言必須填寫的電子郵件地址不會公開。 必填欄位標示為 *

🎬 YouTube Premium 家庭 Plan成員一位 只需 HK$148/年

不用提供密碼、不用VPN、無需轉區
直接升級你的香港帳號 ➜ 即享 YouTube + YouTube Music 無廣告播放

立即升級 🔗