Chapter 1 Introduction 1.1 Preliminary Remarks When you think about it, almost everything on this planet either is a fluid or moves within or near a fluid. -Frank M. White What is a fluid?

❖ Wikipedia and Social Knowledge Dynamics ❖ Previous Work on Wikipedia – Degree distribution – Reciprocity and feedback loops – Motifs ❖ Modeling Wikipedia’s Growth – A model about reference – A model about degree distribution ❖ AOC-based Models ❖ Conclusion

Test 1 Directions: Choose from A), B, C and D) the best answer to complete each of the following sentences 1. No one takes him any more, he's become a figure of fun A)earnestly B)seriously

Section A Charlie Chaplin Section B The politicalo Career of a Female Politician Section C A family of Firste

1. You still have a lot _if you'll forgive my A)to learn/saying B) learning/saying C) learningto say D) to learn/to say 2. There is no point to persuade him to do anything A)to try B)in trying C)of trying

Section A There's a Lot More to Life than a Job Section B What Yougsters Expect in Life Section C What Life Is like Ehen Out of Work

Section A Lighten Your Load and Save your Life Section B Are You a Workaholic? Section C A Bank Robbery

Section A Face to Face with Guns Section B Should I Have a Gun? Section C A Bank Robbery

Chapter 12 Time Series Analysis 12.1 Stochastic processes A stochastic process is a family of random variables {Xt,t ET}. Example{St,t 0, 1,2,...} where St i=o X; and iid(0,2). St has a different distribution at each point t

Jack is going to graduate from university soon, yet he hasn't found a proper job What am I supposed to do to find a job? Please, give me a hand