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Table 1 Parameters/variables, descriptions in RRG and RMRG, and values in the experiments below

From: Effect of direct reciprocity and network structure on continuing prosperity of social networking services

Parameter Description Value
A Set of agents \(|A|=20\;{\text{or}}\;1000\)
\(B_i\) i’s probability of posting an article Variable
\(L_{C_i}\) i’s probability of posting a comment to a reciprocal agent Variable
\(L_{N_i}\) i’s probability of posting a comment to a normal agent Variable
\(S^t_i\) Degree of fun of i’ article \(0<S^t_i <1\) (random)
F Cost of posting article \(-3.0\)
M Reward for reading article 1.0
C Cost of comment \(-2.0\)
R Reward for receiving comment 9.0
\(W_i\) i’ memory of reciprocal agents Variable
\(T_{\rm{W}}\) Memory term 1 (if nothing mentioned)