Analyzing the Impact of Storage Shortage on Data Availability in Decentralized Online Social Networks

Table 2

The default parameters in performance evaluations.

Notations	Default value	Descriptions
𝑁	150	The number of the user’s friends
a	1	The average size of published data
𝜆^expon	1/3	The parameter of the online time duration which follows exponential distribution
𝜆^expoff	1/11	The parameter of the offline time duration which follows exponential distribution
𝜆^plon	2.5	The parameter of the online time duration which follows power-law distribution
𝜆^ploff	2.1	The parameter of the offline time duration which follows power-law distribution
𝜆^pspu	1	The parameter of the number of times the user publishes data which follows Poisson distribution