λ°μ΄ν°λ§μ΄λ Preprocessing β’
1. Data Cleaning β Data quality → preprocess λ₯Ό νλ μ΄μ • Accuracy, Completeness, Consistency, Timeliness, Believability, Interpretability β‘ Data Cleansing • Data in the real world is dirty • Incomplete, Noisy, Inconsistent, Intentional β’ Incomplete: lacking attribute values, lacking certain attributes of interest or containing only aggregate data ex. missing data βͺ μΌμκΈ°κΈ°κ° κ³ μ₯λ¬κ±°λ, μ λ³΄κ° μ½κ² λͺ¨μ΄μ§ μκ±°λ, μμ΄λ€..
2023. 3. 29.