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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
' k; g8 W! @7 e8 u$ N4 hto do-business 1 D1 T, H6 K5 O8 B) m! q3 D3 H: X; K  |7 `
rt random 360% m$ n8 \& h" @* W6 F; |4 u
fd 1
7 ]2 z8 y$ h7 S( C( T ifelse(other turtles-here != nobody)[
1 _3 U0 j! @) h$ D% [. R   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
% [, U% C4 j* |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ M& O, m( X3 Q9 i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( h, t# h6 Y: J! ]
   set [trade-record-one-len] of self length [trade-record-one] of self& x: q1 E8 }1 `. g
   set trade-record-current( list (timer) (random money-upper-limit))+ @- V; f8 I# r) b! T! O7 G

2 w2 y* n5 s/ z& ]6 Z3 Q4 ]. i- Y问题的提示如下:# o8 `! ^8 q# U8 D# {: `
, ~; L' k4 Q: i4 B. Y- ^" `
error while turtle 50 running OF in procedure DO-BUSINESS
6 L) X2 h2 L- {: _8 K% ~  called by procedure GO8 v2 S: M7 |4 D9 t8 n- v$ Z6 w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& y. D3 s6 P; r, E. @9 h2 q/ Y$ d
(halted running of go)4 W; K) q, Y" K
0 f8 u  g( h! G' I
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~! R' m. N( L% x& k, {
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教  x5 ^6 z  [5 P
globals[
4 E6 F0 _3 o* v- Vxmax
$ z! f* U' i: t1 Y* j* kymax
' ^! b( i9 G& X+ e1 Nglobal-reputation-list
  U1 j3 B' X4 i  d5 ~1 \+ k" S
* M( t( Y4 L. X;;
每一个turtle的全局声誉都存在此LIST- @3 `$ b* P/ D7 b1 G3 Z  `
credibility-list
) H% v; Y  c4 E;;
每一个turtle的评价可信度8 c7 ?# ~" E- D1 P% {' ]
honest-service
/ b1 D( A0 A8 g& H$ qunhonest-service5 g4 a, Z; g" h7 W. `+ ^( O  b/ x
oscillation
) e5 ^; A! h$ g% Drand-dynamic5 }. t3 r  k  v. u0 k; f2 h: ~
]
! T& u7 X/ e: p/ o
, X# E) _( x& i# w' r, d- qturtles-own[
5 x* E$ f. `8 ^+ ~, i# |4 _1 R. ttrade-record-all0 z; G" c/ u2 ^# }4 y! n
;;a list of lists,
trade-record-one组成, c, ]0 o2 A2 {' b# N- D
trade-record-one
" `+ x9 n. p1 {. F* w; b! p- k" C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# X: N8 e4 g* A
5 J# X0 s" K+ d;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
; z* G7 P# B3 @5 M- [; b3 R; }trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]2 d$ O" [1 P' I4 r5 L2 W' z0 w
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list. @1 }9 W! i0 S! C* ?+ M* L
neighbor-total
: @. r& W# ^' k% c% z, T;;
记录该turtle的邻居节点的数目
, B$ P0 X+ ?) S  Htrade-time- y: d# S, C4 a. K+ F+ W5 |
;;
当前发生交易的turtle的交易时间% \* p% @& K; G  Z
appraise-give* H9 h$ F7 @) j  T
;;
当前发生交易时给出的评价
# p% A, _; Q- t/ M" Z& @- @9 pappraise-receive4 F/ U/ i$ \1 ]2 e9 u" ^
;;
当前发生交易时收到的评价' Z3 `# k+ K' z
appraise-time
; K+ j; |" O+ O5 @) c;;
当前发生交易时的评价时间8 u' W# \3 k7 x4 l4 e! V8 R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 A9 O1 [! [9 R" ntrade-times-total; k! i2 b) g3 ]. ^" H8 `
;;
与当前turtle的交易总次数/ M! O' o# G* _
trade-money-total9 Z* c9 x  ]/ f
;;
与当前turtle的交易总金额
. Z. y$ N2 W: P" hlocal-reputation
! R5 H) f9 {) w/ {: |global-reputation
0 ^' H* t+ p) W; i! ccredibility  k+ c* b7 Z! e- d( A
;;
评价可信度,每次交易后都需要更新
% z- Y) P' C* h: t- Ycredibility-all
7 x' _/ i: r# {4 z2 K;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
! G0 Q1 Z; @5 |: N. M+ G! a$ v" l- F8 S9 G  W) ?$ ^# S
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
+ u; r1 [6 b+ C" V! p# Qcredibility-one
1 D$ @6 |& Q! _. _% u( n;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
3 d" w: ?. S  c/ A7 S) _/ M( eglobal-proportion
! f/ o8 z# i1 z' }customer
0 F# t. l5 W& |; ~' Kcustomer-no
' Y1 e8 @; Y8 P1 i4 Etrust-ok% r2 a$ n5 h+ `4 n2 y, k8 r
trade-record-one-len;;trade-record-one的长度+ j2 w0 Y% P4 m* {+ e
]
! @+ s1 y# G! b8 Z& ~) D8 {' V7 V( P  Y" {* c, f7 v( G% V
;;setup procedure
1 b5 I  n* C5 v$ {, U# G- D' l  A3 E0 s+ ]1 l( p
to setup
0 C2 ~. H# D& h; K# f  {2 B+ U. P( X  l- q1 {
ca
6 k' ?9 W1 V' K' O, M
6 H; ^- x- s) d$ j6 V
initialize-settings
# m7 R# D' X& o* i  B1 J

5 }  f2 G2 P$ h: {0 h4 F- ^crt people [setup-turtles]

/ C  C* v' m7 \* a
: q& e  H& d  D: u0 a4 p: Zreset-timer
4 C, j0 l+ T8 r6 N3 {

5 y2 V8 @+ Y4 g6 Rpoll-class

2 i# S7 r4 g: o3 z
2 q4 w% K3 c. {4 `. ssetup-plots

5 m8 y6 L/ `6 {/ ~& a4 s/ d- J' F! J# v: R3 X! W8 I1 [. j/ I
do-plots

7 G1 G3 X( h+ r1 |2 wend
' K# v3 j/ B; w% w. z/ q- S& a
3 \& K! C5 y8 Q- o% ~0 G6 _, r4 dto initialize-settings
" j. M: B. ]5 n% I
- Q1 K# g  D1 q, F3 c  {8 _# G" zset global-reputation-list []

1 X2 J$ |: H/ }; U4 O7 D" S& R/ v. T% u' j3 v! _
set credibility-list n-values people [0.5]
7 m6 h4 ^4 {- ?

" B5 c' j3 B8 X4 P4 k" T4 w1 Bset honest-service 0

$ m+ T$ W) W% k2 W3 \& _- Q
* o" P/ C3 S1 W6 \6 n; kset unhonest-service 0

& ~; V* s3 }7 E7 {0 E( K7 S" v3 N$ z/ g1 f* N' t
set oscillation 0

9 t  z; |( T- Y0 t
1 a$ I1 G; p6 s" `) D  R0 pset rand-dynamic 0

& i& Y8 s, t3 Aend
8 g1 R2 ^7 o6 W( K# ~0 t4 x. U4 y/ j$ c: U1 g
to setup-turtles - b# I9 [5 N: B. K" m9 s, ]
set shape "person"4 {: f) Q7 ~/ T7 T" A/ l0 p6 b4 u* g( o
setxy random-xcor random-ycor
- E% Y9 u  O% x9 s' wset trade-record-one []
; M% S3 y. t. c/ e  ?0 M

7 n3 s- j' `! }* S' J$ u, L) R7 lset trade-record-all n-values people [(list (? + 1) 0 0)] 7 A  y/ `) c0 k6 u

, p: {& Y) [4 v" [set trade-record-current []% Z* N8 K2 N8 Q6 F5 c8 Y
set credibility-receive []
0 A* Q( |9 m& Y6 k& g' ^6 y. tset local-reputation 0.53 W* T1 Z9 z# I. o
set neighbor-total 0# Y7 H- ]& ]- f/ R9 b
set trade-times-total 09 E! R+ g7 K+ ]9 |1 H( p: ~; ^
set trade-money-total 0
/ M8 l- ^$ Q( Q  A6 |" fset customer nobody: ?, q$ w6 u# D/ ?2 G
set credibility-all n-values people [creat-credibility]9 z5 j: Y/ H9 U/ B
set credibility n-values people [-1]
# b7 ~: }% C' ]get-color
" k0 z/ [& H+ ^4 _2 ]1 w
% o7 O/ D, {8 j/ |1 s% j
end
/ z8 D3 v3 [" l2 J2 O
3 @# i$ `# |! R  jto-report creat-credibility9 v% r3 R/ z+ Z
report n-values people [0.5]
  s* c' ]3 ]  ]( m  c6 p/ B' z# jend
  [" C7 p$ f+ N; m$ T
7 r. M* h' u% F4 Q0 ~. Zto setup-plots1 z+ T6 ^2 v' \5 Y* U8 n' H4 ~
) X8 C) j- b: n, J* k
set xmax 30
3 w8 F1 }$ o$ }4 }0 a% T! m- f0 Z

! A8 A  I/ \4 R6 wset ymax 1.0
, m1 }5 W' ^8 f' B! [0 ?

* o6 B! r; n2 Y- e: \clear-all-plots

1 U! ^+ _$ c- e9 I/ a- V
* p) `3 _8 l7 Q, U% v4 e, \setup-plot1

5 S0 J( P: I& A; w1 r
- B4 c3 w2 M! psetup-plot2
  T& @, A7 |; b. v3 I2 n

9 k% J4 l% \8 Z8 Esetup-plot3
5 T  E: q' J5 X& g$ C) g0 M/ Y2 ]
end! B+ I  h& p7 n- A1 G3 u  }6 o: c% m

, ^  M5 u1 o& l6 Y" }1 t;;run time procedures
( a& m$ N' O* w2 Z  {7 L
+ C; Q! J& J$ q5 l9 J  Yto go+ X5 Z5 V  g9 e2 @4 X1 U$ p/ x8 y' W

3 B1 M* O- V: h0 qask turtles [do-business]

& M, W/ A  R- b# }( mend! \5 ^, i6 g7 O* U

1 B, E( }6 g$ R% ~9 cto do-business
2 S: q% y+ q( C; u
* g0 x$ r+ {$ a5 F+ P
5 ]+ ]* M  S5 [, r1 t  L. k
rt random 360
$ d  Q& j# W; u) g5 k- b

# w8 S8 n7 O: L$ P6 J" Kfd 1

. W" p! T+ k+ x; u9 }3 n' E! U" u! r3 q* E& a, V
ifelse(other turtles-here != nobody)[
6 P0 S0 ]% C: q3 v: m- e

# y  \: H6 E8 B# M7 j. n* t8 }. fset customer one-of other turtles-here

/ N2 N1 m4 K% W2 {$ _' s- x" B6 E
;; set [customer] of customer myself
8 W. f' @, M! r' x5 l1 [

2 Z; q4 ~" j3 J- Vset [trade-record-one] of self item (([who] of customer) - 1)' j  ^( y! ]4 H- }/ T& k
[trade-record-all]of self
0 x; z1 [  k0 P. N. h;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- X& d! _' [. [/ M/ D, {
1 r$ K9 ]& v6 q. \. T; rset [trade-record-one] of customer item (([who] of self) - 1)7 Q& x0 e4 P5 g, k
[trade-record-all]of customer
' I& L' L$ s( ~$ E8 \
) }. d7 h" C$ S3 F! G: S+ `
set [trade-record-one-len] of self length [trade-record-one] of self
5 i9 I# A0 ~( R; b! \
: h7 ]4 k/ D$ X) w$ ~+ Q9 T( i
set trade-record-current( list (timer) (random money-upper-limit))
% Q" u( O+ e0 l% Y6 U0 D

* Y- ]. Z9 a, X+ i9 Uask self [do-trust]5 c" r2 w6 ?2 E; ~# T
;;
先求ij的信任度$ B8 B8 a$ m  z" R7 D; s* O; }. U3 [
/ }0 {4 w1 k5 C5 f# a3 k% g9 e' U
if ([trust-ok] of self)
3 s$ X3 g9 A% m6 i1 y;;
根据ij的信任度来决定是否与j进行交易[
5 [6 b9 B2 V4 |9 lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% y1 u3 U0 o5 W0 P7 P

. o+ T! h3 u- Z# v" r: Q- @2 V[

: Y8 W7 u0 X6 q1 Q/ P3 o: d) K4 Z" N* L2 h% Q
do-trade
3 e. S* {  J3 e" v: S
! K  K2 |7 I6 x: L5 u
update-credibility-ijl
" [. W7 ?& r3 M/ Z' \
2 Z" A% E' |$ V- B% f/ X; y: Q; T$ i
update-credibility-list8 i0 S- N3 n* D4 v& ?  @, B- p

) `& O( o9 p8 y7 ^7 v* m7 r* M* L# i, I) @3 X/ Y
update-global-reputation-list

: Q7 U; B! k3 k6 [% _5 I7 n
9 N2 o5 [; O" i4 V* q3 e! R( ~poll-class

# T9 x' x8 v0 c4 ]8 S8 T; M# V. v: Z7 y9 ]. E& Q( d
get-color

: ]. b, N- `' i* D% B# M# i2 I7 R7 c5 w" W
]]% X! ~9 G% a$ \, [4 g8 W
" F/ }3 P1 h8 g0 M) P  y; z
;;
如果所得的信任度满足条件,则进行交易
' {! g: |* X% J; w) R/ X5 y4 x6 C& D
& n* E+ v- _# \+ |. {; Z[
( p& ~% a& X, Y1 i- ]. u6 o

3 P$ }, ]- \) H( t, Drt random 360

8 ?8 L& z; j' Z0 _8 b* X
+ [, A( J+ k5 m  [6 Efd 1
! b0 D2 Z# s2 P# C* l/ V, c
' D; e8 X5 Y  x" j- Y
]
) i( f% O, `9 r  J. F

, m9 I8 j7 {! D  Qend

5 s/ k2 H5 ?2 s5 S( ]2 x. t
* g1 M0 `3 c* u+ b* U* _* hto do-trust
( O% x1 y2 R9 I; c: q. B: Hset trust-ok False6 k+ y8 E+ c& [2 K9 M  s

. f, H/ H4 i( C
% A3 C6 ]7 }4 n! U. C
let max-trade-times 0- x+ Z  k) _* l0 L. x% m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# O# T$ k1 N4 r
let max-trade-money 0% y: g& u+ D% L( @3 B, z$ P1 j3 ~* ^
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 [% J  ?% o5 L- Q) |let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ G7 ~9 `' Y! f  I, i) D8 R# R% r
1 d/ A9 Z1 M, ~( y
get-global-proportion
! E$ S3 u* E6 a+ u7 N7 klet trust-value) G' e0 k- j# ]7 W" r& j
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

' R/ J- }" Y3 y8 e, h6 Y7 wif(trust-value > trade-trust-value)
; E6 {% W/ M  I' A( s  q2 B- r[set trust-ok true]' M! [- F1 p& d: H1 B
end% ^- n( z, c# Y- p" }2 Z

  p% Q2 F% m; y0 ^' L4 [to get-global-proportion5 N: y0 D3 q8 S4 x7 G% ^0 U
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). t2 @, \& S. z8 ~. D
[set global-proportion 0]' h' i+ U, N. k: N6 I
[let i 0
) |! X# z* J  ~, ], e! E# Xlet sum-money 0; [. z" [( s$ H$ @4 v% E! l' j
while[ i < people]# t( o% U$ d8 y7 {! g5 n
[" a( k$ E7 U  _7 J' t/ @
if( length (item i, _- L5 i" N% K/ Y/ ~
[trade-record-all] of customer) > 3 )

# J' c  R  U. f[
* t3 z' V0 o* z1 Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 _0 g" h- p' b- a3 t
]
" ?* f# d/ J5 h]  G; |: B& ~8 ]' @1 }$ a& E
let j 02 P  U" o- j) t" a3 Y5 l
let note 0
' D1 _, N  \+ d/ Z$ rwhile[ j < people]
2 Y! \# N- z3 ^: I& G# c[  w# Y  o% P+ J# e2 t8 @
if( length (item i
/ Z9 o6 p( B  s! K[trade-record-all] of customer) > 3 )
, d, a2 Z. j% H1 c% x+ r: s: ]
[0 |" I+ i2 p' P* Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ e& S- {$ e8 x+ }( d1 ^( d; ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 U1 M8 Q2 b) X5 i& i[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# O7 _% [4 s8 H1 F# M]9 ~$ H; L. o+ x2 m# ]( S8 {
], D, y6 F( T5 Y; V" m* e
set global-proportion note; M+ d  f" h3 o7 M, h4 a) N, M
]* Y! N7 J4 e; E
end6 m  @" N3 [$ ^8 @6 A& j' o8 f; ^

( T$ ?  K0 n& Z( H/ L3 G6 Q7 Yto do-trade0 v9 u: I, r) i+ f# Y
;;
这个过程实际上是给双方作出评价的过程
- t* J  _& c- w- I5 h. E2 e, @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- R* c7 i- E3 ~4 ]! F4 t7 Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) N' P) N0 D& ]/ qset trade-record-current lput(timer) trade-record-current: h2 e; y8 f7 i" H
;;
评价时间: N+ p, u- w+ q0 `5 `, j
ask myself [
; [5 a1 i' y! x% Cupdate-local-reputation! o4 I% y( o  U9 u0 q
set trade-record-current lput([local-reputation] of myself) trade-record-current
- z  O$ B2 m! Y% e, S]$ }# e8 t3 q  Y4 [# e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ d2 f+ s- b0 O2 i7 G. c; P6 J
;;
将此次交易的记录加入到trade-record-one+ t( [+ o  M& v& V- e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ q' o/ ^  B- r' v3 X+ Vlet note (item 2 trade-record-current )
" S& G% a( P: Gset trade-record-current8 V1 n0 T8 E/ E7 k/ A4 [
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 i& m4 b; Q) ^" @set trade-record-current
; H9 \3 n# x8 w5 ^9 z* t) q(replace-item 3 trade-record-current note)
5 j) i# Q) {3 `; g! y3 Z1 `6 S4 S  q- Q5 Z# Y" J: Z* j

2 v& ^$ m! \5 U  p6 }- H: ^ask customer [0 y  ^2 o( L6 r* o2 W/ T/ F
update-local-reputation
% _  }, x( a  b/ {; ~, zset trade-record-current
) `) \' S, t# x( `6 p2 I8 z2 [2 [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 A- h, o% C! i* R, r6 X
]
$ M3 e$ k3 a$ S, Q
. D3 C8 v! ^$ y# ~; U5 F. A

8 u5 f% d5 x7 U: }3 Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* K! W) l& G( Q, Q& x
6 ~! d1 k& `/ n/ K2 g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ ]" u8 d! {/ G/ i
;;
将此次交易的记录加入到customertrade-record-all
; _6 T1 n2 R/ C* vend( h# x6 S% I0 j! L8 _5 g( s
$ v% U- n8 i/ Z, ~) |$ w7 f3 |  ?
to update-local-reputation
3 h% \0 I2 P2 t% [6 o, b- cset [trade-record-one-len] of myself length [trade-record-one] of myself
; {) V7 a1 u; A
8 g1 q+ J% G4 [% `7 P9 L1 A& o; t5 o3 L$ v1 s
;;if [trade-record-one-len] of myself > 3
' [% k% u7 U# \& p2 o$ N; r
update-neighbor-total
) o" Q8 ^6 K9 X2 M;;
更新邻居节点的数目,在此进行! F2 K3 _& U2 g$ S) a, P
let i 3
- x( J) q8 ^/ A9 m4 }- Z4 Tlet sum-time 0" s, m/ Y; T$ H+ a" x
while[i < [trade-record-one-len] of myself]
/ e0 z' p; W9 y5 x[
( h. t- C; b9 F: }6 }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* K. a/ U, M/ t9 `& Gset i) i5 Z  ^, w& ?* \' w3 y
( i + 1)
  s6 g4 Z# K, A
]
) I3 e4 x4 E; s3 {let j 35 s& c2 [0 H" [
let sum-money 0
1 O+ E! Q- W' u) J' u3 bwhile[j < [trade-record-one-len] of myself]# k9 z- X# Y" ]+ d
[
" q, i7 A/ W. rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 \) M; {8 M$ J9 i+ G" k* Hset j
+ c6 H  w  E2 |1 }7 O! A3 T' U3 }( j + 1)

8 S/ G$ n: D) N6 z* ]. t0 v]9 n) Q3 L  v5 ?% ], G1 A
let k 3
+ v4 C6 V* C4 T0 T4 j: `let power 06 F2 a: L; ]0 z6 h3 I
let local 0
$ [, L+ f# v# ewhile [k <[trade-record-one-len] of myself]# \: H* I, A( t3 d6 H: k* x" t( E
[  M1 I; W0 M2 H8 A& L
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 3 N7 ^8 e8 U+ P$ f2 \% J
set k (k + 1)
" Z! p% _; q3 O  L$ i]
3 Q* P) Y! b" Y9 U6 zset [local-reputation] of myself (local)
* y1 u7 g/ t, a- \0 u* |end
1 h3 s2 g; a9 w% w) l
) k- X( F* T  ~. {& k# I0 e2 |to update-neighbor-total5 Q8 F* p6 }% U0 D  a+ f9 g: N

, j/ N$ T$ `4 _  S  }6 B! |if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  K- ?* k7 U9 I3 H6 N8 W' X; F

4 h, v: k4 P2 ?: aend. u4 F% \/ V0 `/ u& S
+ n' J1 u# \8 d) J
to update-credibility-ijl ) T8 M) ~1 a  {% e1 {

' O* G# L0 i' ?0 X6 {6 I;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。" X$ R1 w* a6 _1 O- @9 M
let l 0
' v$ `$ x7 B. Bwhile[ l < people ]
1 {3 t1 y+ U; V( K, n$ e4 i;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价" Q5 F7 @' J: K2 @, T; s
[
; ~9 n: i6 ^) t6 |+ vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 U# H( p* t: [* M
if (trade-record-one-j-l-len > 3)1 A5 @. j/ R$ b4 T
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
% K2 l0 ]- |) Ulet i 3
  R- n, X; U* U" hlet sum-time 0- f& e' T5 ]2 B# f" d. U, T. Z+ d
while[i < trade-record-one-len]
' p0 e: A* r) A" r% U9 {[& q( D4 l* h' i
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 t3 R" j; l2 ~. b
set i
8 V; ?. ~. F* }; h8 ?' l( i + 1)
9 z; M( i% L3 o9 A, [
]+ X6 \# d' ~+ H$ \5 s
let credibility-i-j-l 0
. ^4 T9 }8 E8 B1 n! s;;i
评价(jjl的评价)
9 d' a& W$ X$ l$ J/ i: Glet j 3
! j0 L8 v; L" H; o; slet k 4
& T/ o; `  M% F" i& y( jwhile[j < trade-record-one-len]
. s; _9 }  T, M% ?/ d  z4 z[
! B6 j& ~" M. P9 uwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉2 V, x, g2 Q5 y, F- G& S7 t
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)1 p$ D# F8 h! D. t3 F2 v% |
set j9 I, l1 E; _2 s6 A% E
( j + 1)

$ M& \1 i# }4 d6 r9 _- M1 x]
3 m3 E) B/ H8 j" b: g- U9 pset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))! |7 [: O# x6 a9 J% \
, L9 M+ v2 `% v3 C
( {: w# A/ t3 K* D% \) t; x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ U1 {: j, ?# p3 m, z" x;;
及时更新il的评价质量的评价4 r3 u' d) @* \0 M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" L5 _, f- Q# l
set l (l + 1)" g0 f( u. o4 s7 Z" o) M
]
( Z# S" f8 D4 I* H2 I& m3 Q/ @  a5 {end
7 n# D. W$ H3 j4 [2 S) f5 {% m/ g0 |% V+ q- A& b. S
to update-credibility-list
( \( ~( ?. [- \- a( zlet i 0
- z7 N$ `  J3 z% gwhile[i < people]
, Q. p4 B% V3 Q% z[
3 m- C! F9 [6 m7 l% qlet j 0. E5 e9 f. U# {/ F6 `
let note 0
4 J2 L8 R# h" d9 W6 k* C: zlet k 0
: E% r5 z& E1 ~) ~% ^2 d- k;;
计作出过评价的邻居节点的数目, L" P: t3 s! c9 J- b7 c0 b
while[j < people]2 t1 L3 j+ V7 j
[
$ u4 I! ?! ]) z0 ^. A! yif (item j( [credibility] of turtle (i + 1)) != -1)
" B. R- c! d4 ~# O* j( I; };;
判断是否给本turtle的评价质量做出过评价的节点
5 k  d6 C0 n& E7 |0 f4 T  N[set note (note + item j ([credibility]of turtle (i + 1)))2 w8 [( D! d' v8 R$ u9 s
;;*(exp (-(people - 2)))/(people - 2))]
4 c2 L6 f! w7 F# p1 H
set k (k + 1)+ z# z; x! ?; y0 D6 ^' T, B% V
]( e; a2 G( h0 G' W2 s* `$ M$ q, I; Q" @) i
set j (j + 1)% Q9 E. [2 }% r! _+ `
]8 E+ L: W$ s% O) {7 c
set note (note *(exp (- (1 / k)))/ k)+ _5 B) E) G8 h1 F
set credibility-list (replace-item i credibility-list note), n+ P6 V- i1 n
set i (i + 1)0 O9 c- j, U8 U2 e+ W! C; z% |0 o
]0 F8 a# ~; |& C  p- k
end7 s8 l- I. G. y( @0 w
! z% s- u# q' @. |2 h3 k1 @/ Z
to update-global-reputation-list' m# i/ b2 {4 C( I
let j 0
5 I* y6 Q9 d, H2 C. }; S- Nwhile[j < people]
9 z, V  y5 o9 g5 r# P* d[! m2 S8 o2 o3 [  T# L
let new 0+ [, O8 J% ^7 N! }) K' h3 y2 {0 m
;;
暂存新的一个全局声誉
( z6 \  u- ~* `9 v( klet i 0- p& V) {" D3 [: o6 u6 b
let sum-money 0" Z6 T4 M, g5 T  a, R. @: K
let credibility-money 0# g8 K5 G( H* Y) k. O
while [i < people]# }5 a0 |# H# b& Q& z" y2 p
[
# V" L$ |$ p, r3 ]1 K+ n/ y! c# jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), p, M- S$ C- B3 \! l' r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( a% e# B5 S' ]0 s2 a% gset i (i + 1)
8 _! C% ^3 l& W: t) ]  I]
& c! _# i! v: h' }$ \3 Ylet k 0
+ u, C# U- J, {- |! `8 h, \let new1 06 y( X" @$ k! H. B$ B2 ?9 J, w
while [k < people]
' w$ y+ l% o8 }4 t1 U[$ G4 F) S1 \7 d
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
2 \  q; j  d  ]- s# L! pset k (k + 1)
6 ?1 b( T# h+ f, G]8 ~- I! V& u2 N3 Z% h) @7 @- Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   |5 j8 w" W( J
set global-reputation-list (replace-item j global-reputation-list new): V1 ?/ J1 M6 J: J' N2 H
set j (j + 1)
  H. z  `* j0 ~2 @0 ]]
0 a& \1 m7 r' [9 @6 |; |end
1 E% r7 x: j5 k( E2 r( [: R2 r. E$ S% x; U* u: o
, p0 \% t5 F$ @7 [, b

2 @, V) p, v+ I& Ato get-color( E1 D' z! C- R3 }# g9 F
5 g1 S: d2 z6 p1 d/ ?
set color blue

1 x3 ]- f/ {; Q6 O% Q! bend! P4 x( e) E. j  I& P! w+ b% E
7 M' j! D3 k1 U- `
to poll-class& b6 F4 v. r/ b6 n/ L1 a: }
end2 R# B) l2 U. Z( T
5 {0 G3 w1 @; V8 m: f/ G  r
to setup-plot10 ]" ^# a+ f* x+ \5 @

& U; {6 R) ?8 L. x" Y7 ?set-current-plot "Trends-of-Local-reputation"
" u% J0 l% e& i3 d1 t" e  f  d

1 Z" ~. D" ~% H9 Y: N: _9 Yset-plot-x-range 0 xmax

9 B& ^8 ], U5 J' m6 r3 Z9 o& Y" I0 X% _5 Y* v
set-plot-y-range 0.0 ymax
- w5 T1 A5 ~- w1 s5 o$ V% F  @
end# Y6 k  S1 y. E+ |5 j+ t

- _: X8 W! R6 b# {to setup-plot2) {2 E" c5 o4 ]
& k9 m* K5 M4 C& {& n4 ~* r
set-current-plot "Trends-of-global-reputation"
4 G8 Z+ p0 o2 F3 S* B

, r& o% x7 C+ mset-plot-x-range 0 xmax
3 Y0 T- N" p( ?3 g- P
& u9 ?" y- n9 U& z
set-plot-y-range 0.0 ymax
' l+ A6 Q& l4 a! \) \2 D
end
( Y0 L5 ~! ~/ d" G! G: o6 S5 w. A
5 [& i  y& |$ R2 Kto setup-plot3$ v% g, \9 X. f

- u! g, `" Y( O+ f! Hset-current-plot "Trends-of-credibility"

, A. M3 o: R9 `# _  p8 c8 \' F5 B; Q- `4 ]
set-plot-x-range 0 xmax

+ J# @0 h7 u  m( L1 C8 u& x
) F' x2 P! D" d4 _set-plot-y-range 0.0 ymax

2 i5 q) `! S! l( N* }* M2 Nend+ r2 B. }, k+ S  D; R0 |7 H
: h$ s& r" ^- h: c8 Q
to do-plots
. c0 y4 O0 e4 |set-current-plot "Trends-of-Local-reputation"
1 ?; Y% w4 }/ U6 ^" z$ x6 Oset-current-plot-pen "Honest service"
6 R! J' N: ]+ P5 a* n2 x3 |end5 j. Q; i9 R( x6 \
9 J7 A7 }" P1 s% x
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.4 ~7 `3 ^& z' y, v6 d4 V0 ]4 @

2 }& w$ i& A+ p: z5 R1 y# P8 Y这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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