Motivation Model in Community-Built System - Community-Built Databases: Research and Development - page 198

U ð T 0 Þ - accrual of knowledge in the repository in the interval t ½ 0 T 0 :

;

G D G P U ð T 0 Þ¼ \

;

Within a certain calendar interval ½ 0 T 0 , knowledge accrual in the repository

;

has to be maximal:

G D G P

U ð T 0 Þ¼ \ ¼ Max

N

;

8.4.5 Formulating the Repository Motivation Model

For the given:
1. Domain D and its ontology graph G D
2. Set of tasks R ¼f r i g and task parameters: P ¼f Q ð r i Þ ; A ð r i Þg

c c

3. Stochastic creators' arrival pattern p ð C Þ and arrival process parameters f w

; l

g

e e

4. Stochastic editors' arrival pattern p ð E Þ and arrival process parameters f w

; l

g

One has to :

E regarding repository filling
(b) Optimize each arriving creator's c z goal function of the task choice r i ð

(a) Form the editor's motivation function s

c z Þ

C
z

according to his/her motivation function s

y i Þ¼ as

E C

Fð þ s

Z ¼

max
Y

;

(c) Choose properly solved tasks among the ones made by creators according to the
grade

G D \ G ð r i ð c z ÞÞ 6¼; ;

and supplement the repository with chosen tasks

G P

¼ Gr 1 ð ð c 1 Þ Þ [ Gr 2 ð ð c 2 Þ Þ [[ Gr i ð ð c z Þ Þ [ ;

Repository filling criterion:
U ð T 0 Þ - knowledge accrual in the repository within a calendar interval ½ 0 T 0

;

G D G P

U ð T 0 Þ¼ \ ¼

max