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Duration of phonecalls

Duration of phonecalls. Surprising Patterns for the Call Duration Distribution of Mobile Phone Users Pedro O. S. Vaz de Melo , Leman Akoglu , Christos Faloutsos , Antonio A. F. Loureiro PKDD 2010. Probably, power law (?). ??. No Power Law!. ‘TLaC: Lazy Contractor’.

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Duration of phonecalls

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  1. Duration of phonecalls Surprising Patterns for the Call Duration Distribution of Mobile Phone Users Pedro O. S. Vaz de Melo, Leman Akoglu, Christos Faloutsos, Antonio A. F. Loureiro PKDD 2010 C. Faloutsos (CMU)

  2. Probably, power law (?) ?? C. Faloutsos (CMU)

  3. No Power Law! C. Faloutsos (CMU)

  4. ‘TLaC: Lazy Contractor’ • The longer a task (phonecall) has taken, • The even longer it will take Odds ratio= Casualties(<x): Survivors(>=x) == power law C. Faloutsos (CMU)

  5. Data Description • Data from a private mobile operator of a large city • 4 months of data • 3.1 million users • more than 1 billion phone records • Among users with >30 phonecalls, 96% fit the TLAC very well (the rest seem to have recording errors) • Stats remain ~fixed, for all 4 months C. Faloutsos (CMU)

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