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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:
. y8 E8 I- r/ O. Z9 n* F4 B/ N( X8 {to do-business 9 h) e+ ~4 ]1 |% }3 D; O$ S
rt random 360  u6 ?" H2 O+ R' K4 ?5 g! }
fd 19 i2 z  p3 a7 S% n8 f
ifelse(other turtles-here != nobody)[
7 D2 H' j: N- I1 Z   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.: c- `( |3 T4 J5 V" U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 {& a  c& [% X: t0 y' Q7 a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  g7 \1 L( l5 z" W: z' F, b8 b
   set [trade-record-one-len] of self length [trade-record-one] of self6 T) }' u4 ]3 Y
   set trade-record-current( list (timer) (random money-upper-limit)), G0 r3 |% I& w) G; w* d. V# `
, H! Q  P9 z5 x: Z
问题的提示如下:$ F  `/ z8 r  G; A
3 V: ~2 k$ i0 |8 |
error while turtle 50 running OF in procedure DO-BUSINESS
7 U5 Y1 T3 L) U: F+ v  called by procedure GO5 `3 {' p3 [; N* P! z( ^/ l, g; y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 p7 k/ z2 s/ V. L, S% W
(halted running of go)) `/ E- L) V* L' j, Z' W0 V
% c& a2 ~; [, K" l( ~' F
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~~
+ F8 `) g$ E2 G/ Q6 d5 E0 T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' s* U( }  T' _4 N) y
globals[
% C" F4 B: Y* l1 e, {xmax, A# r" w' ~9 T7 i7 N" F. Z
ymax" n% q+ `1 g: M, |! [2 Y0 c: p. R
global-reputation-list7 e# |* r. }" u
; W5 Z+ O4 s5 K7 Y3 C" c7 @
;;
每一个turtle的全局声誉都存在此LIST
1 d0 K$ o& Y# N3 u' p4 n+ I1 pcredibility-list; R1 {$ Z# ?+ r
;;
每一个turtle的评价可信度* H7 R5 _( c: W7 y: U4 {  K
honest-service3 G" r1 V/ R# p5 G  {# T8 D# R
unhonest-service8 A# M% f; `1 \9 [; {$ n0 ?" b* Q
oscillation+ e# f7 o+ C+ a" c5 S( A
rand-dynamic
5 P( O; A$ a9 Q1 N- z* f]! X& H7 M- U' n! H
' R' I% l$ W% v' ?5 P$ H5 }' ]( X
turtles-own[
( c* X( A7 U8 h7 ^( ]+ Q8 Ytrade-record-all  Y- }8 Y1 T. Q1 E9 ?% Z: U
;;a list of lists,
trade-record-one组成
, [# \+ j4 |  H; Q% Jtrade-record-one
6 f  ]$ T( a  G& E/ z0 {6 W;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 b& j* _+ Q& ~% P$ p

  U8 }, @* J" {9 f+ m1 r; l! b;;[
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]]5 f! ]5 I- m1 h3 T
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]( e1 e9 U9 U, H$ j- O/ e
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
: Y9 _5 d2 r: n, cneighbor-total
! n1 u* @6 @3 T, {& H;;
记录该turtle的邻居节点的数目3 A/ T; ^6 S8 |6 c& s' r9 c
trade-time
7 P- w. ]& \! A) i: R8 y;;
当前发生交易的turtle的交易时间
9 w& l( K2 J- Qappraise-give8 }3 }- M- m" p
;;
当前发生交易时给出的评价
) ?- f1 G3 B: a1 kappraise-receive1 A: ~! C4 W, y# l; o+ H+ Z- m7 Z
;;
当前发生交易时收到的评价2 R: W' C! Z! `6 [& i/ h5 j1 a
appraise-time
% c, S( D: _! Q# N1 [& ?;;
当前发生交易时的评价时间  w4 O& r3 x6 t# Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- y, |7 z+ U( R3 @- @8 h8 o1 t0 P
trade-times-total; }' p; E/ y4 G0 ]: m! P
;;
与当前turtle的交易总次数7 T4 Q  w- r  L6 U/ n: R
trade-money-total+ r& r; u8 |" A# ?) u' k
;;
与当前turtle的交易总金额( @, F8 H. C: e  a2 c# K! e& b
local-reputation( L, }$ _" i  @- F1 l. J% r; A
global-reputation' k' v, I( T' O3 X0 x0 d
credibility
: l, A7 C7 ?8 d! m* z5 [) x# K1 m& {;;
评价可信度,每次交易后都需要更新9 w% n# c3 R" q, S; _7 T! B
credibility-all
  u: h& V8 v+ {;;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
0 B/ |( L) a- q7 U
, m  k6 ^' W' h, q8 m/ b: A;;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
. o8 w2 i$ }8 j' fcredibility-one
8 o: X% a! O# h8 @: {$ q$ E0 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
! n8 x- o3 [5 _; cglobal-proportion6 s6 O/ y1 T& A0 V8 Z- g; I
customer6 @" E9 F  t  d1 b& O  Z9 L
customer-no0 n# W. j- E) D* ^/ ^6 d  L+ Q
trust-ok" i/ K; o# F8 ?
trade-record-one-len;;trade-record-one的长度
8 L; ?4 R6 F7 A& r; {]$ C. J& _, x3 K% o3 U

( {' W3 o2 g6 R" O5 k;;setup procedure
# s! e/ c* u5 ~  z# h6 j- [; @+ {0 ?7 c! w( {9 V4 j9 z
to setup& }# `/ P$ @- D/ u% s' \; o

1 Z8 u& ]4 g1 [! M2 [- C. E# {6 L7 ]ca

* Q& ]  g9 P' G) ~' B7 I; Y% \6 Q
initialize-settings
. s( q+ d' O- n8 G1 d! `0 x, Y
7 f$ Q, h1 \6 }& @3 w# h
crt people [setup-turtles]
- ]' e" z3 W/ u* T2 c9 S

4 |; \4 H9 v8 ~) }) s. nreset-timer
: s# k7 j4 r% A; S0 k
& n3 }) X7 L! j. C- _5 L
poll-class
% J6 e/ ~! W" T0 j9 t0 E9 C
8 t1 _* W$ [. _4 n& ~
setup-plots
- G8 k8 J' O: n+ L

! ]& g7 ~$ K  c& H$ O* `5 t( R: |do-plots

- r6 L5 ]/ V5 e' o7 x# [end, n3 v; _& M& T

' o8 h8 v! o9 x& `to initialize-settings* }" D( p2 C' J" G. U0 J! i$ e
# `3 v0 A# [: O) |, O5 M
set global-reputation-list []
/ Q; b) ~2 |, t5 V# B1 f
: `( a% X) y6 x4 @
set credibility-list n-values people [0.5]

- T9 B5 U* Z% J' J1 \3 U3 A  f* g1 }) H, _
set honest-service 0
6 L% ]. Y7 D- x! w* F( i9 k, ]: {/ }

/ s0 m: P" X: f' U8 qset unhonest-service 0
: w* S# }" ~9 Q, ^; X
- C2 R$ @9 ^: [8 P/ M
set oscillation 0

3 \8 c" O/ _( m/ u4 Z2 v& P: r. u
: n. j0 A8 U% D: @- r0 b  nset rand-dynamic 0
: ]7 B) R8 i. G6 P
end, F$ V- r6 O; a8 G

5 F( O  r& O2 j. w- I. Jto setup-turtles - S- f2 ?! m4 I/ K8 s. l, w
set shape "person": W0 F# Z- b' ^) v- ]: d1 g
setxy random-xcor random-ycor
# `5 }2 T: T  n1 d" j6 z$ B3 L; @set trade-record-one []
2 S6 o" B$ o8 ?  A$ ~* c: Z8 ?
' K/ x9 Z% t: l$ l6 N2 s+ G
set trade-record-all n-values people [(list (? + 1) 0 0)]
) Y: U! [/ I. i; H
3 T% `- W+ j( n) P1 W% D
set trade-record-current []( u  A( n$ _% r, ^7 h# Z0 |% u7 o
set credibility-receive []9 E# I  H, ]8 v9 J
set local-reputation 0.5
7 b3 B: v4 O. u! W1 t* S, J: \set neighbor-total 0' h" E9 x5 s) E0 Y  U. h/ T
set trade-times-total 0
2 k) b! \' ^  b  T: S7 o: ]" rset trade-money-total 0
* j5 |. E/ U% w! L, O2 zset customer nobody
  d( Z2 C: [( w9 v0 Tset credibility-all n-values people [creat-credibility]
7 L4 c, O4 E  H6 r5 ]set credibility n-values people [-1]
1 o) J* |* D3 V) K1 `get-color
# i" x/ y+ Z  d' r

: P$ a. n3 P. }. C, pend$ U1 o; ~& ^; E

! ~5 F# o: M. W/ S: ?to-report creat-credibility) `% n7 R% S$ S& \- p
report n-values people [0.5]
6 Q9 {$ H' O7 Z* S1 Aend0 n2 L8 }# K$ X/ d6 O9 w

5 q. a, V& u: {/ M5 \to setup-plots2 D" g( S  m: F5 ]

: v1 ~+ x- I5 e+ Rset xmax 30
7 X5 o8 G8 a  k7 I: u7 G8 ^+ m3 j1 s
; X: ]/ y9 E/ u/ s
set ymax 1.0

" W  ^6 p) N7 w! I% `, Y6 f
' s1 ^) l2 Z" ^4 Aclear-all-plots
0 m% c. S: W2 M! K( ]. G1 v/ Y9 r
7 Q0 T: E3 w! C* Y# z
setup-plot1

; e: a1 |( q6 X; R9 a1 f
1 A$ f/ \& B4 k$ s: _setup-plot2
9 d* X2 ?! N6 K/ A
: b/ F0 }& m& A% E6 Q
setup-plot3
) u( M9 w$ q; }/ q0 w4 b# a1 |. k
end
2 A' }# I1 ~; v1 T4 n/ |& h5 }+ A/ l+ h/ S& u  M7 v
;;run time procedures
; [/ J# g2 @) b5 N3 \# m, B6 Y4 ^' \  e+ V) M6 S# W
to go5 z3 D/ L3 n) U& E" v

) [2 A( N) h1 A) |5 k2 n9 V+ wask turtles [do-business]
; o7 A- h6 r- ^" N- Y9 x4 b
end- E5 z& l: f  m% l
/ p, o2 I) `8 @( u1 T# X3 |
to do-business 3 J3 d0 T3 ]5 j3 V3 s- |, e

% s* N5 q0 t- S# _3 M  H1 H& B
. X  U+ V" V, i4 f' s% T( w" ^rt random 360

4 j* c2 u# O" e! P1 [; K$ ~( _
: }9 E1 u% Y+ yfd 1

  Y  D' K* j, K9 S# S+ v5 J8 F6 V5 w
ifelse(other turtles-here != nobody)[

! }6 S% u3 j" r, z! W! _4 \9 V( _2 `9 ?$ s# s* l2 I
set customer one-of other turtles-here
% w5 J) J' _; B( Z% O

+ t( G% n, I" ~9 P, L;; set [customer] of customer myself
4 T! v9 ]0 N. z' F% R, e" l0 _

2 F/ N  L. k/ l" i9 q1 oset [trade-record-one] of self item (([who] of customer) - 1)
5 h: O' {9 ^! u3 t; C[trade-record-all]of self
7 f' y8 g! M3 r; k* a0 @5 o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: @8 m0 S; G9 A; ?
+ t! s7 K& O4 s5 x7 hset [trade-record-one] of customer item (([who] of self) - 1)
! V5 Q$ ~2 v; q; l[trade-record-all]of customer

$ `6 k4 g- \$ y
# o4 {6 }8 O" ?" wset [trade-record-one-len] of self length [trade-record-one] of self
# z8 D! C) o- @1 E

1 n% o  a: Z& C) v& h8 _' ~set trade-record-current( list (timer) (random money-upper-limit))

; l( f) y8 X0 x! r0 z3 q3 D/ }# ]' j. u+ X
ask self [do-trust]( C! p' V7 ^- C
;;
先求ij的信任度7 k4 w5 _  R4 Q/ y4 Z7 F1 P7 a: W

% r% s8 y: f' p9 V3 l) Xif ([trust-ok] of self)1 w: I) S4 j2 i8 |
;;
根据ij的信任度来决定是否与j进行交易[) u: b( a( o0 A) a' T7 ?& B/ Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. r% {8 Q9 i. S
5 i# c- i  [( {- O( @3 z
[

3 O0 a& Y: v! B0 r- h
5 G) v3 w5 v; W; |; K" n7 Qdo-trade

$ U% H3 h) e; R; g" V9 p3 f5 y
1 Z" P$ e% \# X6 uupdate-credibility-ijl
* c7 Q* P* t% C
! b, m- B/ l9 U0 e, u3 N
update-credibility-list- C% N  T9 x) n  @1 c4 \0 Z$ X2 j
0 x0 H/ y; I( J. M6 r

3 e! @: r. y1 \; V7 z4 G  vupdate-global-reputation-list

, c% J7 {9 e7 R- \( G) ]3 e' ~
) q/ E' G: J' q, ?. \: fpoll-class
" s! ~* y% f9 w3 r" L9 |" D8 `  p

( C9 m) I  h; O% r; a& Dget-color
" B& R" |' d7 @% ^& B

6 v& V% W1 O" e# q, a, X6 B. c]]" \3 _1 t4 _6 w6 I2 d
9 B6 j2 P6 V' _. X
;;
如果所得的信任度满足条件,则进行交易0 q) f( v9 N* {3 e6 e! x

3 F; W. o& D; O& s% k[
) {: C  j: k- U0 ^
  W5 B9 k" h. N9 B5 p  M# P
rt random 360
8 a0 u9 k4 O! r
/ M; u; M" w: ^* s1 ~
fd 1
9 m5 c, a. |  C
9 N" P' d8 K- o) U, k% [
]
3 O3 G6 M1 P; }+ v' }

/ k  q' p5 w! b* N, a; Rend

3 J$ m! l9 P2 h5 d) c5 a3 V. f0 d# y
1 c' m4 r9 N6 g: _1 N' Ito do-trust
: X4 j$ v6 X9 p3 Q+ Q. Cset trust-ok False
1 V" h& D* |" F& u7 V: @( ]1 y! \+ R4 x) ~
1 y( t2 O7 G1 F
let max-trade-times 0. Z, n+ X2 R) s% M. \' q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 U/ V1 T3 j6 {( [let max-trade-money 0
0 S' k$ q+ _( R$ z' |" F0 O6 `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' S3 k7 |5 [6 W8 [" o
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 E8 |5 ~" F$ |1 t4 q
9 ~7 ]" S, `1 I* ~- P) q0 r

7 i, \8 G' g. |- n+ mget-global-proportion
2 h. R: e' h8 m0 t: [let trust-value, B( J0 C, R# l! n2 L
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)

) I) b6 L3 v: m6 Aif(trust-value > trade-trust-value)
& a3 _' ]8 P2 n6 M[set trust-ok true]# I/ {! A2 x+ s
end
8 f  Y" A: ?1 q. Z8 o* }6 |( L* f! `* \: f
to get-global-proportion8 D- A8 i/ z8 r5 }6 x3 U) |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* C2 J& [9 G& A- Y$ L/ x
[set global-proportion 0]3 V; i  g9 Y3 r, u* a# y. X# N, w
[let i 0# o. ~& |( l0 P
let sum-money 0
4 f# i* }; c9 R7 b# a  ]) Qwhile[ i < people]/ |$ K( _* N8 }8 w3 G, u( s. t
[. T. Z8 \  d2 B7 a# e5 k
if( length (item i. Q% u3 s; o& C5 F  v: a! }8 ]  e
[trade-record-all] of customer) > 3 )
; h1 r0 H0 v; o# Q- ^5 `. F( d
[! W+ F' E$ L& h. c' P
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 x% M: \  A! K2 A
]/ ?* y6 R2 M9 J! U
]
& V1 K+ Q3 V- N$ W* y8 m/ alet j 02 M1 e9 H; q) Y  n, h
let note 0& T; o8 {4 H& h: @6 U
while[ j < people]
6 L( |& e/ A: N[
* h* z6 H) m$ m, Z) h: G4 Gif( length (item i/ ]! r2 l( v: }3 y
[trade-record-all] of customer) > 3 )

% S9 _6 I9 @$ L! |' ^5 `+ f/ i[
4 m3 R/ J8 s& p' I- J; ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 L% c) ]$ C) `  \2 N8 r2 ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) p8 X! B; g4 l% B3 J( T& |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  ?& U* i3 Q  X. C]
! _- B( ~) }- ?& ^]
4 M" R6 t% Z; s/ h; O* B7 gset global-proportion note4 c1 `6 u, C$ _9 K1 ]2 F& C
]$ n5 d+ n# |1 _
end
  s9 w6 d* `, C7 u7 C9 ]* I8 Y* |
to do-trade0 U: C0 E% C& |( Q! F6 q. T
;;
这个过程实际上是给双方作出评价的过程
1 Z: @8 \8 [/ u& U! \, Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 H8 `- j5 m4 x4 oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. G% K5 M) G8 X- Q, O% v) ?+ A/ q
set trade-record-current lput(timer) trade-record-current
% Q) I* p. H$ u4 Q;;
评价时间9 E, Z: Z: T8 l- Q& m, A! s: A
ask myself [
1 \" C" f4 o; Pupdate-local-reputation" b4 G$ J6 z' Z6 U3 [: ]  i
set trade-record-current lput([local-reputation] of myself) trade-record-current/ g5 E  ?, G& a0 m/ V
]
, k  A/ n" P+ Z! Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% H% v" V- V% E: T1 D7 x
;;
将此次交易的记录加入到trade-record-one
6 v4 L) w$ q3 B' o" Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# W$ o: Q% y! {2 P' E, z( k! Llet note (item 2 trade-record-current )
4 B/ E2 k: }/ V: D* W% N  Mset trade-record-current
& ~' \" c" M0 M# ~; G(replace-item 2 trade-record-current (item 3 trade-record-current))
7 l+ U1 ~, p* w9 Q! T
set trade-record-current
. E6 C  q6 T4 @1 ^2 m$ J1 p, a(replace-item 3 trade-record-current note)
/ |% X4 _) u7 D$ q6 x! F
$ {. V2 s$ n* R
6 W8 j8 M3 w" q+ o2 ]( c
ask customer [
* W% K5 M/ L6 V1 k5 v) J5 hupdate-local-reputation' ~9 w0 ^3 d% P
set trade-record-current
/ B! y: ~  r* a7 f7 Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 K( q/ D/ v7 U* v5 d, F& z]
  E; Z+ q; d# R" L( F$ H. N9 i/ L! {2 G7 [1 T; f2 N1 y* @! J3 ^# Y
  g2 ~, Q3 D5 {9 a7 [# K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 c$ ?3 Z$ |7 W& t

8 b' S( `# O, t6 o# Q, mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). f; w6 B$ i5 H, b2 M8 o6 b4 B
;;
将此次交易的记录加入到customertrade-record-all, v$ V0 N6 y" a
end
- e; R* R" c1 J) y
$ D, n- |% X6 q0 @. zto update-local-reputation
9 j& K" s! b# pset [trade-record-one-len] of myself length [trade-record-one] of myself1 L8 U9 r) T% p- q
. f  G9 f3 i9 q" }+ T( C, b% r
7 U; \. x1 ?( M2 f3 |) R. ^8 Q
;;if [trade-record-one-len] of myself > 3
" |7 A+ u2 N1 {) T6 _8 i( E
update-neighbor-total9 ?' D  q7 G9 w) ?  C
;;
更新邻居节点的数目,在此进行
$ r0 ]1 L! `5 |" c4 m$ b/ h! m) flet i 3
% K; k! h) J( w% {0 ?7 Klet sum-time 0
; B) F8 l+ r/ m+ \# q" c& T; Bwhile[i < [trade-record-one-len] of myself]
2 W1 n1 y! _# O% E: P9 [[
# U3 `: K2 l5 P; r* Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  n; u$ N( ~" O& G7 }2 cset i
8 C& l2 |! L9 A8 f3 `: N( i + 1)

, {' v& I& N3 m]
; M8 c7 W2 H2 K, Nlet j 39 D2 G% h* N3 j
let sum-money 07 e6 ?/ I- g# K) L2 b
while[j < [trade-record-one-len] of myself]
: h; V* P7 A# C, @$ ][
: Y" A6 A3 w; H8 k0 G" ^+ Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
, k6 ]4 Q* b3 Hset j
4 \) s% ?/ v( E+ M. j2 B# [' _( j + 1)
) [& m: _/ F3 s: P) Z3 g( y+ ]
]9 e) y' y. u% \1 B" a
let k 3
$ i4 d% Z- D. m4 H" N; l8 llet power 0
$ B0 I' \8 s: a/ P8 h/ Q1 {let local 0
7 J0 Z/ q: ?+ k: l. Y( x$ wwhile [k <[trade-record-one-len] of myself]" J  q8 ~! [  ^- @: \6 R4 L4 j
[
% [. ^( _* q3 rset 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) $ D5 M* a) f0 [5 r: a8 v5 R  F- G
set k (k + 1)- W# y/ c  ^6 v$ Y
]
+ l4 d% o; M1 P; |# O) t0 w' gset [local-reputation] of myself (local)9 ~1 I0 e! z# X' e# T1 S
end1 K1 Q: J( Z7 j4 T  ~

& l6 u  Z+ ^8 ^* t# r9 Oto update-neighbor-total
8 s2 }& y2 u3 \, E2 u
9 c& |- \7 ?# i9 r0 b* k4 xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 _6 H& o: e3 L! {2 g

7 `( ~' s3 r; C* U* s, H
( Z- a4 C1 T9 X6 S/ E: E9 T
end
5 \9 `; Y" Q1 M; R. r6 |
' ^+ U) h- G& K+ n8 hto update-credibility-ijl 2 ]- z" t& O4 |' J* r" P9 }, a1 p
4 l, q; [5 ^, i& Z# j
;;
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。: ^& q8 Z# w/ [3 G* p
let l 06 G" _! h1 I8 F* H9 C
while[ l < people ]
# r0 L9 n+ o6 u- e2 w. P;;
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
$ g) |" p8 O' ^0 a( z. H[6 W2 X+ B$ s. l$ s1 N+ R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); t2 O5 t0 \2 F; q
if (trade-record-one-j-l-len > 3)' f# f+ T+ h0 z9 N7 s
[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, B. t4 v5 m0 q) F. @. c. h* L7 ~
let i 31 W5 t: V. G1 i
let sum-time 0+ L( i) J# c$ }/ F" V8 C* L, x, k
while[i < trade-record-one-len]' W# E! g/ ^5 L/ U! \* [
[
$ Y( u. r) j( r! D  Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 Q( c* U+ f, D. A8 l, zset i
) @, j9 R# C! t0 l( i + 1)
: }1 \7 Q& h! k4 j  I7 ]) J
]# I4 e! R% O6 K$ w, y, \/ e; U- |0 Y
let credibility-i-j-l 0
6 p$ a$ G5 Q, z4 }" ?0 d( z) W! `. w;;i
评价(jjl的评价)( d" ?# k+ t* `' A8 }$ Q
let j 3
- @9 x. K; x1 W4 L% @7 ^let k 4
4 W  e% v- o  }' Y' Nwhile[j < trade-record-one-len]1 M; g. H1 d7 [; G
[7 z+ x; B. f% F
while [((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- W. r  e. O2 R% E
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)
4 ^* p  N* x9 c) Fset j
; @/ ^0 M1 |/ n  v0 l, j( j + 1)

) L. i) L, H. {) \! V% @]
% [# o/ n( {; |# a% Oset [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 ))
) P8 }+ ]1 q: h! n3 u% l4 ?6 E. U4 ~9 M1 R6 S# X0 q; G

8 ^* J7 s5 N: o; l3 D, olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% w3 x. |7 D/ e( U
;;
及时更新il的评价质量的评价
* S9 r$ T9 P% u7 uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 ^( S( A) `8 ~+ q+ k$ x' h5 ]) v7 Uset l (l + 1): z; K6 [6 Z- a; U
]
9 s( C8 t; s6 s- w! ^. @2 dend
5 K2 Z" g0 ^# o* X- N' _8 @" k5 F' D! l3 n# b) G
to update-credibility-list
  h4 \6 |2 D3 ~! i( _let i 0
  M5 b7 l4 _' dwhile[i < people]! y0 ?- V: p6 ]% t1 _! _
[5 T% [! V6 a( \5 H
let j 0
# n7 D# E& o, b& l% c. w0 f2 ^let note 0
9 D1 Y. K8 c& B5 @# y, Ulet k 0% v5 u- y8 a& l7 P
;;
计作出过评价的邻居节点的数目6 p) f6 A. d" d/ ^7 W
while[j < people]
% w& @+ W0 O  X[
( _. R, @- M4 x7 b9 W( |* jif (item j( [credibility] of turtle (i + 1)) != -1)
4 `/ y# S9 h2 N1 |5 I' V;;
判断是否给本turtle的评价质量做出过评价的节点; p/ Y0 I4 Q$ m! [, z( y. n, {) Q+ r
[set note (note + item j ([credibility]of turtle (i + 1)))
* B3 r( P6 F% P. |" Q* Q;;*(exp (-(people - 2)))/(people - 2))]

9 G* u) o" \6 Xset k (k + 1)
6 \7 F9 K* t9 f5 q. p2 Y]/ y8 I2 K) {' V& ^7 ?, _" h0 F
set j (j + 1)
# o% n! o; k8 N8 `/ c]
2 ~" u: L% f7 h/ H0 ~set note (note *(exp (- (1 / k)))/ k)9 n- L+ ~; }; Z( j5 _
set credibility-list (replace-item i credibility-list note)
  [- X/ p$ O7 c. n" [2 B6 z/ kset i (i + 1)+ k( m5 o' |) e  o- c8 i
]5 l7 D" M- c: a& B
end
+ w! }( a1 V6 W
  J! j( j6 G8 j7 J8 r% \to update-global-reputation-list( U8 Y9 L6 H" o# H
let j 0
% u4 C% }* `- L  fwhile[j < people]! O& u# }8 ~  K4 f+ L9 D
[
. e3 ]" j2 e/ K6 y! X9 Flet new 0
" [6 K1 x4 a' O3 y;;
暂存新的一个全局声誉
' S, h  M& U8 ~let i 08 j2 \0 d2 f0 K/ y7 a
let sum-money 08 n' h  ]; K9 Q# f$ K, b0 [
let credibility-money 08 [7 d$ D  A, g
while [i < people]
  C( Y* @0 ~5 G' z5 A, D  h0 `9 `[
* @; w" |2 J+ sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' I3 B. @3 ^, S1 T, O- Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 n- p. `# o& Hset i (i + 1)+ W' R- n! D& N8 p
]
3 w( L3 N& a4 X" m. y" clet k 0$ W5 \* _, w6 ~4 D+ i: \9 J
let new1 0! ]' J/ \% d0 y& M3 L: h
while [k < people]
) p6 U/ s6 W5 \) o& @5 P- H[
6 s5 F/ B& ?' _" b& t' v4 U( M+ Rset 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)
$ @9 D9 i, U" H* j! ^: tset k (k + 1)
5 r2 N# y9 M4 w+ w% l6 o], l# G* A$ p  T
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * i8 p( D, r; [6 Q# n
set global-reputation-list (replace-item j global-reputation-list new)1 R( z7 T) O# U( ^, u
set j (j + 1)% L- M& o* S; h% j# a* L
]
3 L  f& {* i+ a% @end; M# b( V8 a8 [

, L: V" H% g. ]$ I( P% h* }* L8 F7 p/ I$ Y6 n3 J) R

9 Z/ Y; f, @3 E0 H' S; nto get-color
# `6 m9 f, u# N7 p( v* ~) _
& I9 [, p/ a+ k" y9 |% F4 Pset color blue

- M5 k0 C* Y9 a. \9 ]. iend
' H) l6 l" Z: `# U6 C7 e8 a8 `* F4 U. R. j& l. P
to poll-class# ~- L+ r" @; }& U3 l
end
* M/ s3 X1 V; Q
; w1 U% ?$ F  }' a6 Pto setup-plot1
3 s( A9 v0 j) G& B. o3 @$ s' a4 m6 H- W# ]4 @  L
set-current-plot "Trends-of-Local-reputation"

1 u. e% X( }/ e
( o% g' k* _' q" {5 l+ r! eset-plot-x-range 0 xmax
" U, G* y* D  ]% a: t$ {% t/ T

6 p* B% ~! e) m! F! M. Fset-plot-y-range 0.0 ymax
" j$ I3 d; b0 z$ g4 U; [1 j
end' t4 I- w- L0 n: m" U3 p
" ^) x7 {, t, i
to setup-plot2
+ x( l8 z2 `/ j4 \) J
' f; o$ m5 b/ V7 @9 g) `0 Cset-current-plot "Trends-of-global-reputation"
, E% w; `" T5 \8 T1 P/ ^6 C0 F
% L& ]2 z3 a, p& m: f
set-plot-x-range 0 xmax

) z: l1 u: m! [4 `% A: w0 Y& e
( J/ F  x2 u0 h; {set-plot-y-range 0.0 ymax

; Y6 [# \$ i3 S) a6 x- |1 kend
' y# K" G: Q' I  ?" t: c6 ]2 K; z  _4 p! {
to setup-plot3
4 T' G. O: F% H2 |% [2 Z9 ]% i  R( W; g/ D* ]9 i
set-current-plot "Trends-of-credibility"

, \$ j2 n$ v" x& }0 e) |. P! r* v; S; W
set-plot-x-range 0 xmax

# j0 B% u' R7 j  w3 Y" ~8 c. r5 X$ M& D8 l
set-plot-y-range 0.0 ymax

0 V- @* i8 q# v9 aend
2 y9 u( `8 d. s% r9 f( i% M5 X0 l% p& S7 q4 T9 q
to do-plots
7 {! p+ ?+ D+ G9 nset-current-plot "Trends-of-Local-reputation"
9 V# v6 `6 N7 [set-current-plot-pen "Honest service"
3 ~% q6 {: i+ Qend. p' h# A5 M) ?' d. u& T/ M) S5 @
0 p3 ?" u6 @2 \0 c8 h( T
[ 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.
  r) s9 D9 j! n7 C/ G( ^3 Z7 t5 v, v+ Y' ~1 }( I
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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