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Theorie samenvatting BA-minor

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Theorie samenvatting BA-minor

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  • January 17, 2023
  • 8
  • 2021/2022
  • Summary
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1. Exploration

Histogram




Boxplot




→ punten erbuiten zijn uitschieters, zijn opvallend verschillend
→ 50% van data in doos (oranje) Q3 = 25% en Q1 = 25%
verdeling box → zegt symmetrisch of asymmetrisch

Time series




→ uitzetting van tijd→ hoe evolutie in tijd

Scatterplots




→ uitzetting van punten is handig om eventuele verbanden te zien
( eerste = lineair verband, tweede = kwadratisch, exponentieel verband)

, Spatial




→ groote bolletje→ hoe vaak voorkomt
→ kleuren → hoeveel punten
→ bv voetbal wereld → geeft bv info voor verdediging

2. KNN Classification

voronoi diagram tussen alle punten middelloodlijn

valt punt binnen bepaald vak dan is die het meest aansluitend bij dat punt

→ bv: nationaliteiten belg, italiaan




KNN =k-nearest-neighbor classification
meest nabije buren

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