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            • CAPSENSE Button and Slider using FreeRTOS
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  • āļ‚āļąāđ‰āļ™āļ•āļ­āļ™āļāļēāļĢāļ—āļģ Data cleansing
  • āđāļšāļšāļāļķāļāļŦāļąāļ”

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  1. ðŸĪ–Artificial Intelligence (AI)
  2. Data Analytics

Data cleansing

In the other name "data cleaning"

PreviousData AnalyticsNextData analytics

Last updated 2 years ago

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Assoc. Prof. Wiroon Sriborrirux, Founder of Advance Innovation Center (AIC) and Bangsaen Design House (BDH), Electrical Engineering Department, Faculty of Engineering, Burapha University

Data cleansing āļŦāļĢāļ·āļ­ Data cleaning āļ™āļąāđ‰āļ™āļ„āļ·āļ­āļ§āļīāļ˜āļĩāļāļēāļĢāļˆāļąāļ”āļāļēāļĢāļāļąāļšāļ‚āđ‰āļ­āļĄāļđāļĨāļĢāļđāļ›āđāļšāļšāļŦāļ™āļķāđˆāļ‡āđ€āļžāļ·āđˆāļ­āļĨāļ”āļ›āļĢāļīāļĄāļēāļ“āļ‚āđ‰āļ­āļĄāļđāļĨāļ‚āļĒāļ° (Dirty data) āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāļĄāļĩāļ„āļ§āļēāļĄāļœāļīāļ”āļžāļĨāļēāļ”, āļĄāļĩāđ„āļĄāđˆāļ„āļĢāļš, āđ„āļĄāđˆāļ•āļĢāļ‡āļāļąāļšāļŠāļļāļ”āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāļāļģāļŦāļ™āļ”āļĄāļē, āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāļĄāļĩāļ‹āđ‰āļģāđ† āļ—āļąāđ‰āļ‡āļŦāļĄāļ”āļ™āļĩāđ‰āļĨāđ‰āļ§āļ™āđāļ•āđˆāđ€āļ›āđ‡āļ™āļ‚āđ‰āļ­āļĄāļđāļĨāļ‚āļĒāļ° āļāļēāļĢāļ—āļĩāđˆāđ€āļĢāļēāļĄāļĩāļ‚āđ‰āļ­āļĄāļđāļĨāđāļšāļšāļ™āļĩāđ‰āļˆāļģāļ™āļ§āļ™āļĄāļēāļāļ™āļ­āļāļˆāļēāļāļˆāļ°āļ—āļģāđƒāļŦāđ‰āđ€āļ›āļĨāļ·āļ­āļ‡āļžāļ·āđ‰āļ™āļ—āļĩāđˆāļāļēāļĢāļˆāļąāļ”āđ€āļāđ‡āļšāđāļĨāđ‰āļ§āļĒāļąāļ‡āļˆāļ°āļ—āļģāđƒāļŦāđ‰āļāļēāļĢāļ™āļģāļ‚āđ‰āļ­āļĄāļđāļĨāđ€āļŦāļĨāđˆāļēāļ™āļĩāđ‰āđ„āļ›āđƒāļŠāđ‰āļ§āļīāđ€āļ„āļĢāļēāļ°āļŦāđŒāđāļĨāđ‰āļ§āļĒāļąāļ‡āđ€āļāļīāļ”āļ„āļ§āļēāļĄāļœāļīāļ”āļžāļĨāļēāļ”āļ­āļĩāļāļ”āđ‰āļ§āļĒ āļ”āļąāļ‡āļ™āļąāđ‰āļ™āļ‚āđ‰āļ­āļĄāļđāļĨāđ€āļŦāļĨāđˆāļēāļ™āļĩāđ‰āļ„āļ§āļĢāļˆāļ°āļ–āļđāļāļāļģāļˆāļąāļ”āļŦāļĢāļ·āļ­āđāļāđ‰āđ„āļ‚āļāđˆāļ­āļ™āļ™āļģāđ„āļ›āđƒāļŠāđ‰āļ‡āļēāļ™āđ€āļžāļ·āđˆāļ­āđ€āļžāļīāđˆāļĄāļ›āļĢāļ°āļŠāļīāļ—āļ˜āļīāļ āļēāļžāļ‚āļ­āļ‡āļ„āļ§āļēāļĄāļ–āļđāļāļ•āđ‰āļ­āļ‡āļ‚āļ­āļ‡āļ‚āđ‰āļ­āļĄāļđāļĨ

āļ‚āļąāđ‰āļ™āļ•āļ­āļ™āļāļēāļĢāļ—āļģ Data cleansing

step 1 : āļ™āļģāļ‚āđ‰āļ­āļĄāļđāļĨāļ‹āđ‰āļģāļŦāļĢāļ·āļ­āļ‚āđ‰āļ­āļĄāļđāļĨāđ„āļĄāđˆāđ€āļāļĩāđˆāļĒāļ§āļ‚āđ‰āļ­āļ‡āļ­āļ­āļ

āļ‚āļąāđ‰āļ™āļ•āļ­āļ™āļ™āļĩāđ‰āļˆāļ°āđ€āļ›āđ‡āļ™āļāļēāļĢāļāļĢāļ­āļ‡āļ‚āđ‰āļ­āļĄāļđāļĨāļ­āļ­āļāđ€āļžāļ·āđˆāļ­āļĨāļ”āļ‚āļ™āļēāļ”āļ‚āļ­āļ‡āļāļēāļĢāđƒāļŠāđ‰āļˆāļąāļ”āđ€āļāđ‡āļšāļ‚āđ‰āļ­āļĄāļđāļĨ āđ‚āļ”āļĒāļāļēāļĢāļĨāļšāļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāļĄāļĩāļāļēāļĢāļ‹āđ‰āļģāļāļąāļ™āļ­āļ­āļ āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāļĄāļĩāļāļēāļĢāļ‹āđ‰āļģāļāļąāļ™āļĄāļąāļāļˆāļ°āđ„āļĄāđˆāļ„āđˆāļ­āļĒāđ€āļāļīāļ”āļ‚āļķāđ‰āļ™āļ•āļēāļĄāļ›āļāļ•āļī āļŠāđˆāļ§āļ™āļ™āđ‰āļ­āļĒāļˆāļ°āđ€āļāļīāļ”āļˆāļēāļāļāļēāļĢāļšāļąāļ™āļ—āļķāļāļ‚āļ­āļ‡āļœāļđāđ‰āđƒāļŠāđ‰āļ‡āļēāļ™āļĨāļ·āļĄāļ§āđˆāļēāđ€āļ„āļĒāđƒāļŠāđˆāļ‚āđ‰āļ­āļĄāļđāļĨāđ„āļ›āđāļĨāđ‰āļ§āļŦāļĢāļ·āļ­āļšāļēāļ‡āļ„āļĢāļąāđ‰āļ‡āļĢāļ°āļšāļš āļšāļąāļ™āļ—āļķāļāļ‚āđ‰āļ­āļĄāļđāļĨāđāļŠāļ”āļ‡āļœāļĨāļ§āđˆāļē error āđāļ•āđˆāļ‚āđ‰āļ­āļĄāļđāļĨāļāđ‡āļ–āļđāļāļˆāļąāļ”āđ€āļāđ‡āļšāļ—āļģāđƒāļŦāđ‰āļœāļđāđ‰āđƒāļŠāđ‰āļ‡āļēāļ™āđƒāļŠāđˆāļ‚āđ‰āļ­āļĄāļđāļĨāļ‹āđ‰āļģāļĨāļ‡āđ„āļ›āļ­āļĩāļāļ„āļĢāļąāđ‰āļ‡ āļāļēāļĢāđ€āļāļīāļ”āļāļēāļĢāļ‹āđ‰āļģāļ‚āļ­āļ‡āļ‚āđ‰āļ­āļĄāļđāļĨāļ™āļąāđ‰āļ™āļŠāđˆāļ§āļ™āđƒāļŦāļāđˆāļ™āļąāđ‰āļ™āļˆāļ°āđ€āļāļīāļ”āļ‚āļķāđ‰āļ™āļˆāļēāļāļāļēāļĢāļĢāļ§āļĄāļāļąāļ™āļ‚āļ­āļ‡āļāļēāļ™āļ‚āđ‰āļ­āļĄāļđāļĨāļŦāļĨāļēāļĒāđ†āļāļēāļ™āļ‚āđ‰āļ­āļĄāļđāļĨāļĄāļēāļāļāļ§āđˆāļē

āļŦāļĨāļąāļ‡āļˆāļēāļāđ€āļĢāļēāļˆāļąāļ”āļāļēāļĢāļāļąāļšāļāļēāļĢāļ‹āđ‰āļģāļāļąāļ™āļ‚āļ­āļ‡āļ‚āđ‰āļ­āļĄāļđāļĨāđāļĨāđ‰āļ§ āļˆāļēāļāļ™āļąāđ‰āļ™āđ€āļĢāļēāļ•āđ‰āļ­āļ‡āļˆāļąāļ”āļāļēāļĢāļāļąāļšāļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđ„āļĄāđˆāļĄāļĩāļ„āļ§āļēāļĄāđ€āļāļĩāđˆāļĒāļ§āļ‚āđ‰āļ­āļ‡āļ”āđ‰āļ§āļĒ āđ€āļŠāđˆāļ™ āđ€āļĢāļēāļ•āđ‰āļ­āļ‡āļāļēāļĢāļ—āļĩāđˆāļˆāļ°āđ€āļāđ‡āļšāļ‚āđ‰āļ­āļĄāļđāļĨāļ‚āļ­āļ‡āļžāļ™āļąāļāļ‡āļēāļ™āđāļĨāļ°āđ€āļ‡āļīāļ™āđ€āļ”āļ·āļ­āļ™āļ—āļĩāđˆāđ„āļ”āđ‰ āđ‚āļ”āļĒāļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđ„āļ”āđ‰āļĢāļąāļšāļĄāļēāļĄāļĩāļ”āļąāļ‡āļ™āļĩāđ‰

āļŠāļ·āđˆāļ­
āļ­āļēāļĒāļļ
āđ€āļžāļĻ
āļ­āļēāļĒāļļāļ‡āļēāļ™
āļ—āļĩāđˆāļ­āļĒāļđāđˆ
āđ€āļ‡āļīāļ™āđ€āļ”āļ·āļ­āļ™

āļ™āļēāļĒāļŠāļĄāļ›āļ­āļ‡

36

āļŠāļēāļĒ

5

āđāļ–āļ§āļ™āļĩāđ‰

30,000

āļ™āļēāļĒāļ›āļĢāļ°āļŦāļĒāļąāļ”

67

7

8

āđāļ–āļ§āļ™āļąāđ‰āļ™

50,000

āļ™āļēāļ‡āļŠāļēāļ§āļ›āļĨāļē

420

āļŦāļāļīāļ‡

āđāļ–āļ§āļšāđ‰āļēāļ™

2

27,000

āļˆāļ°āđ€āļŦāđ‡āļ™āđ„āļ”āđ‰āļ§āđˆāļēāđāļ–āļ§āļ—āļĩāđˆ 2 āļ™āļąāđ‰āļ™āļĄāļĩāļāļēāļĢāđƒāļŠāđˆāļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđ„āļĄāđˆāļ•āļĢāļ‡āļāļąāļšāļ›āļĢāļ°āđ€āļ āļ—āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđƒāļŠāđˆ āđāļĨāļ°āđāļ–āļ§āļ—āļĩāđˆ 3 āļ™āļąāđ‰āļ™āļĄāļĩāļāļēāļĢāđƒāļŠāđˆāļ­āļēāļĒāļļāļ—āļĩāđˆāđ€āļāļīāļ™ āđāļĨāļ°āļĄāļĩāļ„āđˆāļēāļ—āļĩāđˆāļŠāļĨāļąāļšāļāļąāļ™āļĢāļ°āļŦāļ§āđˆāļēāļ‡āļ­āļēāļĒāļļāļ‡āļēāļ™āļāļąāļšāļ—āļĩāđˆāļ­āļĒāļđāđˆ āļ‚āđ‰āļ­āļĄāļđāļĨāđ€āļŦāļĨāđˆāļēāļ™āļĩāđ‰āļˆāļ°āļ•āđ‰āļ­āļ‡āļ™āļģāđ„āļ› Cleansing āļāđˆāļ­āļ™āļ™āļģāđ„āļ›āđƒāļŠāđ‰āļ‡āļēāļ™

step 2 : āļˆāļąāļ”āļāļēāļĢāđƒāļŦāđ‰āļ­āļĒāļđāđˆāđƒāļ™āļĄāļēāļ•āļĢāļāļēāļ™āđ€āļ”āļĩāļĒāļ§āļāļąāļ™

āļāļēāļĢāļˆāļąāļ”āļĄāļēāļ•āļĢāļāļēāļ™ (Standardise) āļ„āļ·āļ­āļāļēāļĢāđ€āļ›āļĨāļĩāđˆāļĒāļ™ format āļ‚āļ­āļ‡āļ‚āđ‰āļ­āļĄāļđāļĨāđƒāļŦāđ‰āļ­āļĒāļđāđˆāđƒāļ™āļĢāļđāļ›āđāļšāļšāđ€āļ”āļĩāļĒāļ§āļāļąāļ™āđ€āļžāļ·āđˆāļ­āđƒāļŦāđ‰āļ‡āđˆāļēāļĒāļ•āđˆāļ­āļāļēāļĢāļˆāļąāļ”āļāļĨāļļāđˆāļĄāđ€āļŠāđˆāļ™ āļĄāļĩāļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđƒāļŠāđˆāļĄāļēāļ”āļąāļ‡āļ•āđˆāļ­āđ„āļ›āļ™āļĩāđ‰

  • Bangkok

  • Krung thep

  • āļāļĢāļļāļ‡āđ€āļžāļ—

  • āļāļĢāļļāļ‡āđ€āļ—āļžāļŊ

  • āļāļĢāļļāļ‡āđ€āļ—āļžāļĄāļŦāļēāļ™āļ„āļĢ

āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļąāđ‰āļ‡āļŦāļĄāļ”āļ™āļĩāđ‰āđ€āļĢāļēāļŠāļēāļĄāļēāļĢāļ–āļĢāļđāđ‰āđ„āļ”āđ‰āļ§āđˆāļēāļ—āļąāđ‰āļ‡āļŦāļĄāļ”āļŠāļ·āđˆāļ­āļ„āļ§āļēāļĄāļŦāļĄāļēāļĒāđ€āļ”āļĩāļĒāļ§āļāļąāļ™ āđāļ•āđˆāļ§āđˆāļē format āļ‚āđ‰āļ­āļĄāļđāļĨāļ™āļąāđ‰āļ™āđāļ•āļāļ•āđˆāļēāļ‡āļāļąāļ™āļ”āļąāļ‡āļ™āļąāđ‰āļ™āļ‚āđ‰āļ­āļĄāļđāļĨāđ€āļŦāļĨāđˆāļēāļ™āļĩāđ‰āļ„āļ§āļĢāļ–āļđāļāļˆāļąāļ”āļāļēāļĢāđƒāļŦāđ‰āļ­āļĒāļđāđˆāđƒāļ™āļĢāļđāļ›āđāļšāļšāđ€āļ”āļĩāļĒāļ§āļāļąāļ™ āđ€āļŠāđˆāļ™āđ€āļ›āļĨāļĩāđˆāļĒāļ™āļŠāļ·āđˆāļ­āļ—āļąāđ‰āļ‡āļŦāļĄāļ”āđƒāļŦāđ‰āđ€āļ›āđ‡āļ™ "āļāļĢāļļāļ‡āđ€āļ—āļž" āđ€āļ›āđ‡āļ™āļ•āđ‰āļ™ āļŦāļĨāļąāļ‡āļˆāļēāļāļ—āļģāļāļēāļĢāļˆāļąāļ”āļĄāļēāļ•āļĢāļāļēāļ™āđāļĨāđ‰āļ§ āļ‚āđ‰āļ­āļĄāļđāļĨāļ‚āļ­āļ‡āđ€āļĢāļēāļ™āļąāđ‰āļ™āļˆāļ°āļŠāļēāļĄāļēāļĢāļ–āļ–āļđāļāļˆāļąāļ”āļāļĨāļļāđˆāļĄāđƒāļŦāđ‰āļ­āļĒāļđāđˆāļŦāļĄāļ§āļ”āđ€āļ”āļĩāļĒāļ§āļāļąāļ™āđ„āļ”āđ‰āļ‡āđˆāļēāļĒ āđ€āļĄāļ·āđˆāļ­āļ—āļģāļāļēāļĢāļˆāļąāļ”āļĄāļēāļ•āļĢāļāļēāļ™āđ€āļĢāļĩāļĒāļšāļĢāđ‰āļ­āļĒāđāļĨāđ‰āļ§āļ„āļ§āļĢāļĄāļĩāļāļēāļĢ De-duplicate (āļĨāļšāļ„āđˆāļēāļ‹āđ‰āļģ) āļ­āļĩāļāļ„āļĢāļąāđ‰āļ‡āđ€āļ™āļ·āđˆāļ­āļ‡āļˆāļēāļāļ•āļ­āļ™āđāļĢāļāđ€āļĢāļēāđ„āļĄāđˆāļŠāļēāļĄāļēāļĢāļ–āđ€āļŦāđ‡āļ™āđ„āļ”āđ‰āđ€āļ™āļ·āđˆāļ­āļ‡āļˆāļēāļāļ‚āļ­āļĄāļđāļĨāļ­āļĒāļđāđˆāđƒāļ™ format āļ—āļĩāđˆāđāļ•āļāļ•āđˆāļēāļ‡āļāļąāļ™

Step 3: āļˆāļąāļ”āļāļēāļĢāļāļąāļšāļ„āđˆāļēāļ—āļĩāđˆāļŦāļēāļĒāđ„āļ›

āļ‚āļąāđ‰āļ™āļ•āļ­āļ™āļ™āļĩāđ‰āđ€āļ›āđ‡āļ™āļ‚āļąāđ‰āļ™āļ•āļ­āļ™āļ—āļĩāđˆāļĒāļēāļāļ—āļĩāđˆāļŠāļļāļ”āđƒāļ™āļāļēāļĢ cleansing āđ€āļ™āļ·āđˆāļ­āļ‡āļˆāļēāļāļ„āđˆāļēāļšāļēāļ‡āļ›āļĢāļ°āđ€āļ āļ—āļ­āļēāļˆāļˆāļ°āļ•āđ‰āļ­āļ‡āđƒāļŠāđ‰āļāļēāļĢāļ„āļģāļ™āļ§āļ“āļŦāļē trend āļ‚āļ­āļ‡āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļąāđ‰āļ‡āļŦāļĄāļ”āļ­āļ­āļāļĄāļēāļāđˆāļ­āļ™āļ–āļķāļ‡āļˆāļ°āđ€āļ•āļīāļĄāļ„āđˆāļēāļĨāļ‡āđ„āļ›āđ„āļ”āđ‰ āļŦāļĢāļ·āļ­āļšāļēāļ‡āļ„āđˆāļēāļ­āļēāļˆāļˆāļ°āļ•āđ‰āļ­āļ‡āđƒāļŠāđ‰ numerical approach āđ€āļžāļ·āđˆāļ­āļ™āļģāļ„āđˆāļēāļĢāļ­āļšāđ†āļĄāļēāļ„āļģāļ™āļ§āļ“āļŦāļēāļ„āđˆāļēāļ—āļĩāđˆāļŦāļēāļĒāđ„āļ›āļˆāļēāļāļŠāđˆāļ­āļ‡āļ™āļąāđ‰āļ™ āļ„āđˆāļēāļšāļēāļ‡āļ„āļēāļ­āļēāļˆāđ€āļ•āļīāļĄāđ„āļ”āđ‰āļ”āđ‰āļ§āļĒāļāļēāļĢāļ­āļ™āļļāļĄāļēāļ“āđ€āļŠāđˆāļ™ āļ–āđ‰āļēāļŠāđˆāļ­āļ‡āđāļŠāļ”āļ‡ āđ€āļžāļĻ āļŦāļēāļĒāđ„āļ›āđ€āļĢāļēāļŠāļēāļĄāļēāļĢāļ–āļ­āļ™āļļāļĄāļēāļ“āđ„āļ”āđ‰āļˆāļēāļāļ„āļģāļ™āļģāļŦāļ™āđ‰āļēāļŠāļ·āđˆāļ­

āļŦāļĢāļ·āļ­ āļ–āđ‰āļēāļ—āļĩāđˆāļ­āļĒāļđāđˆāļŦāļēāļĒāđ„āļ›āđ€āļĢāļēāļāđ‡āļŠāļēāļĄāļēāļĢāļ–āļ­āļ™āļļāļĄāļēāļ“āđ„āļ”āđ‰āļˆāļēāļāļĢāļŦāļąāļŠāđ„āļ›āļĢāļĐāļ“āļĩāļĒāđŒ āļŠāđˆāļ§āļ™āđƒāļŦāļāđˆāđāļĨāđ‰āļ§āļ–āđ‰āļēāđ„āļĄāđˆāđƒāļŠāđˆāļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđ€āļāđ‡āļšāđ„āļ”āđ‰āļĒāļēāļ āđ€āļĢāļēāļ„āļ§āļĢāđ€āļāđ‡āļšāļ‚āđ‰āļ­āļĄāļđāļĨāļŠāļļāļ”āļ™āļąāđ‰āļ™āđ†āđƒāļŦāļĄāđˆāđ€āļžāļ·āđˆāļ­āļ„āļ§āļēāļĄāļ–āļđāļāļ•āđ‰āļ­āļ‡āļ‚āļ­āļ‡āļ‚āđ‰āļ­āļĄāļđāļĨ

āđāļšāļšāļāļķāļāļŦāļąāļ”

āļˆāļēāļāļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđƒāļŦāđ‰āļ”āđ‰āļēāļ™āļĨāđˆāļēāļ‡ āđƒāļŦāđ‰āļ™āļģāļ„āļ§āļēāļĄāļĢāļđāđ‰āļ—āļĩāđˆāđ„āļ”āđ‰āđ€āļĢāļĩāļĒāļ™āļĄāļēāđ€āļĄāļ·āđˆāļ­āļ„āļĢāļđāđˆāļ™āļĩāđ‰āļ™āļģāđ„āļ›āļˆāļąāļ”āļāļēāļĢāļāļąāļšāļŠāļļāļ”āļ‚āđ‰āļ­āļĄāļđāļĨāļ—āļĩāđˆāđƒāļŦāđ‰

āđƒāļŦāđ‰āļŠāļģāđ€āļ™āļēāļŠāļļāļ”āļ‚āđ‰āļ­āļĄāļđāļĨāļ™āļĩāđ‰āđ„āļ›āđāļāđ‰āđ„āļ‚āđ€āļ›āđ‡āļ™āļ‚āļ­āļ‡āļ•āļąāļ§āđ€āļ­āļ‡

Last update: May 2022

Author: Thanaluk Pranekunakol (AIC-Researcher)

āļāļēāļĢāļˆāļąāļ”āļāļēāļĢāļāļąāļšāļ‚āđ‰āļ­āļĄāļđāļĨāļ‹āđ‰āļģāđ†