Exponential, Power-Law and Log-normal Distributions

• For the standard form of exponential and power-law, refer to Wikipedia.
• For an intuitive introduction to power-law, refer to 幂律分布研究简史.
• For generative models for power-law and log-normal, refer to "A Brief History of Generative Models for Power Law and Lognormal Distributions".
• For how power-law distributions can be generated from random processes, refer to "Producing power-law distributions and damping word frequencies with two-stage language models".