CS-Notes-byCKL
Primary version
Primary version
  • First Page
  • PHP Notes
    • How a Theme Is build
  • Applied Machine Vision
    • The Pinhole Camera Model
    • Linear Algebra Recap
  • NLU/NLP Chatbot powerd by Rasa for Telekom
    • RASA
      • Terminology and Definitions and structure of a bot
      • Rasa Core Vs Rasa NLU
      • Rasa NLU
        • Training and Data Format RASA NLU
        • Entity Extraction
        • Evaluation
      • Preprocessing Methods
        • Bag of Words
      • Setup
  • Evalutation/Testing
  • Distributed Sytems
    • Week 1
    • Java I/O
  • Diskrete Strukturen
    • 1. Kombinatorik
      • Kombinatorische Beweisprinzipien
      • Ziehen von Elementen aus einer Menge
      • Wichtige Zählprobleme
      • Rekursionsgleichungen
    • 2. Zahlentheorie
      • Teilbarkeit und Primzahlen
      • Modulare Arithmetik
      • Vermischtes
    • MIT Week 1 Proofs
    • 3. Graphentheorie
      • Modellieren von Graphen
      • Grundbegriffe
      • Bäume und Wälder
      • Graphen Eigenschaften
    • 4. Algebraische Strukturen
      • Verbände
      • Isomorphe und homomorphe Abbildungen
  • Fingerprint extraction of electrical appliances
    • 1. Data Preprocessing
    • 2. Transition Detection
  • AI in a nutshell
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  • Notations and Definitions
  • 1. Raw reading Data
  • 2. Time Series
  • 3. Subtime Series
  • 4. Sliding time window
  1. Fingerprint extraction of electrical appliances

1. Data Preprocessing

How the data generated by the Smart Meter is reprocessed for learning

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Last updated 7 years ago

Notations and Definitions

1. Raw reading Data

  • t : Timestamp

  • P(t) : Power at that time

  • S(t) : Apparent power at that time

  • V(t) : Mains root mean squared (RMS) at that time

2. Time Series

Time series is a sequence of Raw Data Objects R. The length of a Time series is defiend by the Time value of the last Data Object in T minus the first on. So Tn- T1.

3. Subtime Series

A Subtime Series is defined for a Time Series, as a continuous subsequence of T. You can imagine it , as just a slice of a Timeseries(?).

4. Sliding time window

The sliding window represents a set of subtime series of T. It is the fundamental timing component of the learning engine

A Raw Data Objec
A time Series Object
A Subtimeseries Object
A Sliding window Object