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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:- w4 ]- c7 e) S6 b; W! r. |
to do-business
; V; @% R; c' z rt random 360
0 k0 }, X0 ~$ W8 u fd 16 q$ a  K9 a& @( G! w$ V
ifelse(other turtles-here != nobody)[
3 Y  |8 l3 \; `   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.
4 V3 ]5 K1 G! x% K. s7 x, b" L9 U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  o) K' \! f+ Z5 i! ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: T$ e# Z/ s6 j4 v3 t9 j
   set [trade-record-one-len] of self length [trade-record-one] of self
* h$ g' O/ U- |: O9 M0 r   set trade-record-current( list (timer) (random money-upper-limit))
6 g" j( S( h& O3 `- v/ l' j6 I4 L: [
问题的提示如下:1 u0 [3 V1 \0 N1 i6 C4 e

& E( P( v! `- O4 Q  {# D$ T' D1 oerror while turtle 50 running OF in procedure DO-BUSINESS; l  E6 Y* j# G, g
  called by procedure GO
# Q3 y! ]$ V% N0 m( n2 [: xOF expected input to be a turtle agentset or turtle but got NOBODY instead.% X) B) _4 k% {$ E! P# P
(halted running of go)
: j9 P3 k5 @/ r7 h/ e( T7 e' r4 N' L$ d1 z5 l
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~~+ E4 y2 z, r; }
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
" c! V7 D, U+ _+ |, Wglobals[' M* E# s9 l' b8 S0 V5 u! w
xmax/ D4 n8 {0 O1 t3 b# M# K* X- d
ymax
% y3 a* d1 Q- [) k9 h- iglobal-reputation-list3 ?1 a! _0 f; _0 k

3 t# b( x$ o: `* I;;
每一个turtle的全局声誉都存在此LIST" M; Q. f( G& L
credibility-list
" G) D) D/ ^8 y;;
每一个turtle的评价可信度
9 u8 k0 }/ ^* o, w0 X! Uhonest-service
8 {. _  L* l1 C5 ^% `! p5 vunhonest-service
3 [- ]6 i& i8 P" Ioscillation
/ h/ w! h3 j- z$ D4 _3 U: N  j+ hrand-dynamic
1 S$ c* e3 D! d]
) t' S6 X) w# y: s+ D' |! \. f
) y( }) E% \  {# s3 f5 @turtles-own[7 X7 ^% L1 [0 A
trade-record-all, ?! U, L. u, w
;;a list of lists,
trade-record-one组成1 z$ B0 {& g8 }! d, u; ~
trade-record-one
, n0 b; N, P7 a: u! V  F( i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) }& K+ D, [6 c1 C3 r- o$ ^! J
! D: J6 d, g$ o( ^& 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]]  c6 x% G! u6 g6 ~
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]  |0 F' u6 J( r3 ~
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
: {/ j3 X2 u4 j) eneighbor-total, ~7 N* v4 a6 U+ b
;;
记录该turtle的邻居节点的数目
9 K& H) A0 I4 \2 E8 d# ctrade-time
- Z$ Z1 E4 |2 j+ I0 a& D;;
当前发生交易的turtle的交易时间! M) f% ]. h* C$ _" h0 F" r
appraise-give) |$ |! H) G& v  u! E' y9 @# e
;;
当前发生交易时给出的评价# _* q" \2 D) D" M
appraise-receive4 X9 m5 P5 M  d/ }
;;
当前发生交易时收到的评价2 w0 i% z8 x0 Z/ q" N
appraise-time
9 X$ h) e( Z! U% W( Z0 g5 d;;
当前发生交易时的评价时间
$ q- F2 u3 L. `  Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉% h5 I+ p' r" z' [: a+ }
trade-times-total% f0 M2 j1 X0 h: T
;;
与当前turtle的交易总次数
3 i( b3 Z, |0 |' A% ~% F# a- ptrade-money-total
% t1 n& u3 n7 U: {;;
与当前turtle的交易总金额
! \3 V7 p! O2 G3 X  v0 c4 Nlocal-reputation
0 d0 [/ n# r6 K7 v4 }7 ?global-reputation5 X3 [) Z! t, [- Y9 l2 h
credibility# C& ]+ L* m& B% U/ m
;;
评价可信度,每次交易后都需要更新0 ^7 i6 J" {6 A6 |& E
credibility-all
/ w7 P- q7 \; }7 a4 x;;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
7 m2 T4 ?- P/ r2 H2 [
  L5 G. E" O! ?# f( Q& Z;;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
2 [8 R8 t+ P0 W2 p1 F, o/ Ecredibility-one
3 w# U6 Y  ]% C0 @. h# Y;;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' i6 f* s1 |5 N/ q
global-proportion/ u! P7 z' v! \5 d7 p6 F
customer; \, P  m$ a$ h6 d$ m# }) z5 Q. T- G
customer-no
( ]% b: N/ g  C0 Ttrust-ok9 A6 t$ N/ Y& N( q# }. V
trade-record-one-len;;trade-record-one的长度
1 u6 `+ O( y& l# j( S: n: C# ~]
$ m: r% [$ A; b/ b+ d$ Y
# I. {+ _9 q+ [- w;;setup procedure8 D" F& o+ F+ Q+ g2 D3 \' w/ s. w
! _8 v6 x8 A: v; m& P6 O" p
to setup% d9 M; Q' k; q5 Z

/ _7 B( {: I# A! U( lca

' E: z2 {3 V, x6 X0 f9 g4 U+ T
( H8 I. N/ K( N/ e  r& t' Yinitialize-settings
# P' z4 i) m7 h8 k
. D0 U/ h4 Q& b5 z
crt people [setup-turtles]
; x3 T6 _8 C7 g- e" \5 m
' ?. j8 ~5 S( `$ j" {; {" t
reset-timer

3 A5 l) j: a" n0 \% ]( i* _: Z& G: M( X; @; E/ L
poll-class
- @9 ]7 U5 w( m/ ]7 Q8 }& \
1 c7 q: M( F% I8 o8 E5 r7 Q- @, e
setup-plots
+ `! m% L8 A( f: i' [" }  R

" R) k* b0 V$ k$ [, x3 j5 W" Odo-plots

0 b3 s0 @+ {9 @end
# _* @" }$ z, D0 ^6 a! f0 i1 G
: H) u: S) f% B4 r  Kto initialize-settings7 j8 `, q8 e1 y- h* K( x

' k# \" |' m. _6 H8 Tset global-reputation-list []
) |& z. \: W' h- p. `) _
( [2 C& Q/ P6 D2 p0 `9 g! F
set credibility-list n-values people [0.5]

! Y$ y2 Z) Y3 @$ b* l
. }% h+ b" \- r$ V/ Qset honest-service 0

0 R8 ~$ j1 T8 F3 t, Y& X$ i, w% g# t5 ?: w, C; [
set unhonest-service 0
9 @7 |. I/ [$ W$ S  B/ X. E3 X

# y+ A- y# d  Y$ ?set oscillation 0
/ c! |6 q7 I* G* W/ T: H
0 D$ {6 S# O, I) V# i
set rand-dynamic 0

3 K5 B& e" J' F8 C8 I( _; ]end
; C) k6 ^6 F: v+ B% d* P4 U& s) v3 f
5 m: D1 n- `' v) pto setup-turtles 4 s6 ^3 P% X, K5 U* K# |
set shape "person". c2 k+ E7 G" Y
setxy random-xcor random-ycor" C* D* \8 e$ n# N
set trade-record-one []9 f$ Q+ y4 z% Z! ^2 N! _/ t
1 L; b5 o! }' D% W/ ~# b; j
set trade-record-all n-values people [(list (? + 1) 0 0)]
& e! V* Q$ K6 ]* a, Y
3 o. r1 H  q$ o% ?1 `- C
set trade-record-current []
6 x) q. d; ]' v- A0 oset credibility-receive []
& s/ |, j4 ]9 X: jset local-reputation 0.5& k) Q+ h5 I7 T- V" E# s' ?) a
set neighbor-total 0' Q" `5 [) x& g+ X; L! f  r
set trade-times-total 0
1 T6 m8 a+ \8 _2 `: {$ p4 Bset trade-money-total 09 V* B$ ~$ ?+ x  n- o" {
set customer nobody$ h4 k; c5 k: z" F6 Q
set credibility-all n-values people [creat-credibility]+ @8 h. _' s4 G. r& p0 ]
set credibility n-values people [-1]8 _' G; z5 t: U3 W8 w1 V, x$ b, L
get-color
4 w- Y, _6 M3 r7 C1 T1 M

' |. |: X* X* @" nend
% {8 \4 X3 S3 M" r6 @; Z8 Z) t8 I) H7 e: z) R
to-report creat-credibility9 S; e7 ^1 H4 f6 Y) j
report n-values people [0.5]) y. _+ y8 T6 l+ o! d
end
5 R0 Q0 S3 R$ i& t  \9 j. y2 `, r8 J, F8 a. e
to setup-plots6 e9 a3 _% S6 {$ c9 u. D* n6 @

8 M1 h; d& a) x0 Y3 ~+ Aset xmax 30

0 @# |+ ^2 I7 a0 ^) z$ i/ H4 S9 K9 |' _: X) F$ q7 C
set ymax 1.0
  c# o- n/ B% b* p3 B
) q& n' b( G: E
clear-all-plots
: F$ _; j: @: B. F) ?" s1 e
! l5 u. G( ^$ K7 b1 E4 b, }
setup-plot1
: {+ K) N, [5 b* T/ y) v( o1 ?% [6 B
% Y0 t. S& L' y" J; a* W
setup-plot2

! {. ^$ t% V' S1 }2 [
4 k4 Z0 Y5 O- k: h  N% R$ {setup-plot3

) k/ q  J9 j2 u  Y# W$ T0 m; Rend* t/ a% M" [. K4 ^
% d- r" M, Q- O7 L6 z. |
;;run time procedures
- X; x) u: a9 e) T
& _. ^- ?1 n8 q; ]to go+ t/ k( ]$ @3 S( y1 Z7 k

+ Q( l3 _0 L0 {' Q* n2 @ask turtles [do-business]
# g, ^. \" h  i. [
end- g0 ]* o9 F& O; q' y% k# m

: X) O/ \7 `$ L( \+ P  r4 ito do-business
2 b# s+ Z- c7 K7 ]  R5 z$ @

  Z1 \) s9 Z% T5 [. m$ S8 G$ \' Y# u8 [: _2 n) ~+ A9 l  M
rt random 360
) i4 ~+ z& l$ p& ]7 u0 l4 `7 q% I

5 w0 k/ K! d+ ]; hfd 1
  ^& q& k# _7 n! ]. G0 {  R0 H' r4 a% E

1 a1 Z5 b! ?8 K8 z. J# K4 B+ F* w3 pifelse(other turtles-here != nobody)[

! u! B% `% W8 X7 \0 }
" N5 ^  N) p; a) C) y/ K. Iset customer one-of other turtles-here

+ o8 c( z! x5 ~/ @8 B
5 E( V& Q3 V) s9 L7 q  z, C;; set [customer] of customer myself
! O/ z1 l) G) K. H4 c  @; I

/ A+ J, q! t9 h7 Vset [trade-record-one] of self item (([who] of customer) - 1)
4 U5 a9 v  B; T' @[trade-record-all]of self
1 H/ h+ W3 V. Y, ?' v' s$ u- `+ b2 V;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: {0 R9 G* h/ G. ]7 j$ k! h1 T
3 G/ A1 ]  `3 ^! e5 uset [trade-record-one] of customer item (([who] of self) - 1)
  U( `$ @; ?9 C- t[trade-record-all]of customer

' K6 X: X1 l1 w2 X* x
9 J, ]9 E% u5 q  G. x% a$ A+ F( Sset [trade-record-one-len] of self length [trade-record-one] of self
; l6 _, ~+ |4 ]- W# t! d3 A- Z
; H& t. w, P  b; V
set trade-record-current( list (timer) (random money-upper-limit))

8 B$ t# W' |) n4 K: D( J) [' ]% }# G  o& I2 |
ask self [do-trust]! ^! M6 v2 y$ \6 _
;;
先求ij的信任度
5 \( G) _! j$ p. o% r3 h2 m6 o( ?  `) T4 m0 u0 I" T
if ([trust-ok] of self)
: h1 V4 G5 s+ D% @8 }& S;;
根据ij的信任度来决定是否与j进行交易[- Y% Q% s. B/ U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, K5 _" P; B8 Q( S0 a0 U1 Z1 p

6 s0 S/ A4 [; ~* U[

; N, _2 k) @. o/ [1 G0 {+ `( n  W: m& l. E
do-trade

5 f; Q+ t' U5 {8 A' V: w5 _
. C0 l' k+ Z6 O+ q4 [. f3 Supdate-credibility-ijl

' F& a! m& N% f: ?
/ B6 q* M2 S8 ^update-credibility-list, }) h# K) |8 i" W! P

/ e9 R8 {/ H% h3 j1 ?- J! S$ y; W" m' y; S1 q6 l2 M+ n
update-global-reputation-list
. ~) v8 @8 U4 @; k& B, I7 v  Y

% A- G, k/ t8 ]7 S, F5 Dpoll-class

$ u, K! ^& P" v; i
  T. A' Z5 L4 G6 @$ h$ \4 mget-color
9 R; y# a$ P5 Z& {+ X0 x
* V6 R, e9 n9 o* W3 V4 [6 s$ X
]]6 A" J6 ^* M! m  X

, B& K, `1 S% j, k5 H% D8 e! L;;
如果所得的信任度满足条件,则进行交易) ]- V0 I3 }. a) \5 _# ?

" Z3 N+ x& S% b" L! Z[

! X, t+ u" X; ?; t7 ^! z
3 F3 F: D# G9 p9 ~5 M( {rt random 360

$ ]/ I7 A8 h0 {* ]
4 |8 h& Z; ]/ O! E. Ufd 1

7 {% n7 O% Y* ?0 r' x- z( I: }: z8 h# f) M. e; \0 U4 f8 t
]

1 ^7 f) }# o3 C
% \1 w( b& K+ _' M* Pend

& d6 ~, A4 i- I( B: t4 I6 g+ W/ v3 i$ s* j" ]" s
to do-trust
) J) s6 m9 B( y! Z- Pset trust-ok False
" l# m, {- L* }# U4 T) B# t! \; {  G. W6 ^" ~3 M/ l$ _' p

% i9 O/ v* o) V+ {4 W: E( H% llet max-trade-times 0
# P! r7 b, O" Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 g; b% A# J1 M7 J5 n  l
let max-trade-money 0
5 I' ~* k9 p- Q5 K' p+ oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& H% |0 C0 O+ l4 @$ C$ C  Q  F4 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))9 d# F6 M4 k' N0 x

) @2 L  O& X4 {

/ u( B2 s& B2 p9 w' bget-global-proportion- [# e. C/ }* \* p# s
let trust-value4 `; k8 N- ~3 I/ G2 _
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)
" y; w- E2 M/ w9 H) a
if(trust-value > trade-trust-value)
" P3 f3 N! L: Q1 T% j5 F[set trust-ok true]+ N  C1 K% I! n" N
end' X* T5 ~7 A5 `  f
0 g, l: u6 S* _8 a
to get-global-proportion
0 d  i+ I) n" H: T. u0 Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& `- \9 E" M9 |& \5 _1 ?[set global-proportion 0]
' U" M9 V2 o  l( v[let i 0
" T5 ]0 V  Z2 f% V: @5 Y# @& z" N% r2 dlet sum-money 0& w6 r7 v. f# p! u
while[ i < people]; H1 z0 K; B# t# R8 Y0 M
[5 S# v4 f+ ]$ b; a
if( length (item i
/ O5 d; u) i6 M[trade-record-all] of customer) > 3 )
) J3 l) B- z( `& x( m) |& j; e
[
6 |2 i( K" U, T) w: h2 ~5 hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 G; p- T/ }9 F. q  I& n
]; B9 y! ~0 s1 D! X
]) n4 R! I  U. f1 L  m/ `
let j 0
3 D+ i! y: d  [$ ~let note 0) G2 B2 O" H" b) b
while[ j < people]) V0 X& J& F# c9 I
[) r! I& u2 @7 `$ m
if( length (item i
% @: g' ~0 y8 T* C8 ?[trade-record-all] of customer) > 3 )
$ E) e. `9 b0 c" T' _! r
[3 w& U3 ~; U, A! A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 Q0 }4 B& Q" W% |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 P6 x/ {' N( e! T3 d- _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# O) {4 v- A- b! R4 [: o$ c]7 i3 C' Z; u# D9 e% c
]) k* A( P/ W1 W3 |, [
set global-proportion note
2 n6 H- Z  s2 ~+ ]$ a/ e]
) v* y4 w  ~$ x) v- x% xend2 O- w9 F, Y' c( f

+ o* _( E/ w0 F  L6 e" q: Sto do-trade
0 P- _- n: F* h& Z+ T7 n2 };;
这个过程实际上是给双方作出评价的过程
! W# }0 v9 V% j7 `. P4 S: `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. k) _' |* Z8 N2 ]" R8 D9 N  X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: z/ F, X/ z! v- m1 F* O" F
set trade-record-current lput(timer) trade-record-current9 d. Q, e6 V9 M/ c
;;
评价时间! r* z% [! @8 p- I% P( `9 W( \
ask myself [& U6 \! O6 f4 Z9 p, j/ P1 W
update-local-reputation
) }* R' G7 Q% ?1 J; P) I  W) m' Uset trade-record-current lput([local-reputation] of myself) trade-record-current
# W. P' N6 V; n5 E: v) l5 B]$ _5 W2 T* {9 U' c0 w2 w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ ?) J. C! P) c; G
;;
将此次交易的记录加入到trade-record-one
) w: D3 l' E' `, j8 r& fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 o( e+ e5 c; ulet note (item 2 trade-record-current )1 {; S6 ?+ }& q3 M1 h% W4 E+ h
set trade-record-current& y3 X" R' p7 M( ~( V4 O; |
(replace-item 2 trade-record-current (item 3 trade-record-current))

; N, w6 }/ ^0 n6 U4 m' I7 {+ S% gset trade-record-current
; O  n% `/ Q( d) O& G- U(replace-item 3 trade-record-current note)* s3 H5 u' d( U, M0 K1 _$ o7 D. K
# j' I! M3 n4 e0 q" U8 a& t0 E+ o

& x6 I- U1 G' y0 {4 fask customer [" I9 W" G: m) b" T3 P% b7 Y3 R" D6 p
update-local-reputation
) U  F; G) J0 \' |; l% {6 Q  D2 Nset trade-record-current
" I+ [4 c+ K, G, o# W3 a& Q& E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; J* H: Z7 |9 k' d" z
]8 \! v+ a1 i: ^7 y

2 G6 V) d8 e) @6 u# |; p9 b* O

0 r) j$ f6 k* \( p( m: X8 Vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, @% q7 }; v0 t( K: l3 B

  h- J) s; \& e) X# Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 _; e. m) w6 f- B;;
将此次交易的记录加入到customertrade-record-all
; m& O% N2 T% U4 B! z4 Y3 @. fend
' m* g- |9 r, H; C( W+ J: j
- N$ Q  _% k' Y, F5 {# Ato update-local-reputation, E3 R5 M8 w0 P6 P
set [trade-record-one-len] of myself length [trade-record-one] of myself- S1 f: R! ?: m. Q: |$ J
8 i+ S4 j  T7 G; D. R+ g

2 v! V' p* Y) a, Q) j) W;;if [trade-record-one-len] of myself > 3

5 o0 W- {; X( g9 W9 i2 ^  oupdate-neighbor-total/ Y) {! s! I' r; z+ p; ^' x
;;
更新邻居节点的数目,在此进行6 ~0 y  g( E3 j  w
let i 36 s9 H+ q- s5 H5 b
let sum-time 0  a+ W8 Z1 `& R  z
while[i < [trade-record-one-len] of myself]/ w- {5 w) q! Y  A3 Y7 b) h+ J
[, v* q* {( ~& A: B5 t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ M- W: |7 i  J4 ~
set i
8 o) I# Z! z( x; `% |9 C9 h( i + 1)

2 |0 P3 R& E8 G* w]
3 F5 V- }, R, G! Y8 J% i' d1 q# klet j 3
; O; M0 y& u5 }$ n" s; {9 Clet sum-money 09 Z3 f8 D' @" v2 L; X8 B
while[j < [trade-record-one-len] of myself]0 W# r9 @/ p! {5 u1 u2 Q& X: a4 h
[
4 u9 S  ]0 t3 L: h3 T% oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* M0 i3 A- Y' k2 g/ `
set j
4 D, [) P& \) X( j + 1)
/ p7 K4 A+ F3 U: z* x/ w; h$ a) q
]3 S9 O% o3 X5 [) G
let k 3. m' F5 A6 D' J" a6 Y( J1 U) H
let power 0
3 Y2 A) @8 g" Elet local 0$ ]7 `7 Q2 ^7 a8 I: b: L! b: R5 W
while [k <[trade-record-one-len] of myself]
: i1 ]: a, S+ |9 o3 F0 _, u[# w0 E% }8 W# o! Z- W) p3 }
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)
8 \$ j4 R. |5 F& U" P) P" ?set k (k + 1)0 G8 H) L. o: a7 i& K
]
  r' P8 V8 N" G4 W( |5 f/ Zset [local-reputation] of myself (local)
( c. m; G) h1 v4 Cend! e  b; E; q) h3 d
7 V8 W$ _7 w1 p# l3 L; j' V, _
to update-neighbor-total8 `4 v5 p; A! \3 H5 G6 ?( e: Y, e

# u4 X$ Z8 V8 M) q: h) Sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' ?( p. ?5 q4 o$ V- |8 w
# X9 A1 n3 }% G+ h4 g# V  ]
7 I1 V4 n8 ~# \( E- a
end/ L, x/ R+ \+ T) ?- D
9 ?2 Q  d( ^; W% v$ }2 B$ ^
to update-credibility-ijl 2 K& |4 u0 |# G. \5 P7 |

& l7 d$ q# ~/ j5 B/ \;;
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。" D5 \9 ?  x) e5 o1 @' g
let l 0- L- @$ w! x. b, J- ]! N
while[ l < people ]9 a& A, f( D2 }6 U5 D/ k2 d1 a! Z* S
;;
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
4 i* m5 `0 u0 s+ y( C[
( f) J, _# \+ S- llet trade-record-one-j-l-len length item l ([trade-record-all] of customer). q1 K: L7 h! \# Z( e, [, V
if (trade-record-one-j-l-len > 3)4 M5 m# B0 y% e( Q7 e
[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-one6 s" U( k% j0 A6 P
let i 3! f% ?+ [: C0 x3 u6 v  K
let sum-time 0
, i3 o- p6 N  ~# z* ?$ l5 V. Vwhile[i < trade-record-one-len]
; q. A9 k  ^- _: ][, \( r8 c5 K8 D+ O( ~+ i  p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 U6 t8 _4 z$ Y( D0 iset i
( @* v+ C# z0 l, ~! B1 W( i + 1)
+ s+ P0 X' p3 d# P4 _. \1 Y: C6 a
]# ~2 J! i! ]* h/ \  f/ p
let credibility-i-j-l 0+ X. O* x: ?; L/ ?8 G2 L) q5 j1 ]
;;i
评价(jjl的评价)
+ I; k5 z( S# O- g6 Y; o( Zlet j 39 V) F. M' `2 F8 K5 Y- C
let k 4$ `' s" z/ Y5 y* K' Y. P3 g
while[j < trade-record-one-len]
1 F7 Z5 D2 [1 S- N[
' y1 v. {7 Z9 `' [9 Owhile [((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
; g" ]& ~' S1 N+ A% s5 M+ oset 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)
& U+ H6 G% I( z0 o- Pset j9 A& n  ~3 i& e) z9 o) W- N" \
( j + 1)
8 y' A6 N6 ?# b9 B5 v
]
' L% e' }: H/ o0 Y: Rset [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 ))* H# l# X# \; g6 c0 W: H& }

- F; I; ^* u; E

% h1 n" Y) P- a  `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ F$ l) n1 _7 G2 P. i7 ?
;;
及时更新il的评价质量的评价
3 }2 a& t, f8 P; d# ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, o9 p' D7 k; L% C5 }9 h- Fset l (l + 1)
0 ?3 S6 f. m+ l: g/ B2 O& E]
* c! f, e# `6 Dend9 R- {* e" d4 E) b* D" W# M) @

8 M, H" E  Q) b: m. ]# d6 s7 B% q9 Yto update-credibility-list* L. \% i- Z4 l
let i 0' ~3 D8 x+ V: q5 j/ N% C; V: z
while[i < people]  _$ o! S/ I) x+ W- Y
[
' N1 _9 E( y/ i3 P8 ^. ^% flet j 0
2 z! L1 E: T1 Plet note 0
* p; D. @) l' Dlet k 0
5 |& j9 \5 C' M4 ~. k1 G;;
计作出过评价的邻居节点的数目, T, U! [' L- H  H9 P4 c2 u) G9 d/ q+ h
while[j < people]5 A$ H; H2 t8 i+ I5 w  K# Z
[
$ [; O" U' W# C' j# b. D& Sif (item j( [credibility] of turtle (i + 1)) != -1)% Y  E5 A/ h) B. R& J5 y
;;
判断是否给本turtle的评价质量做出过评价的节点
' T  {2 \  {1 p[set note (note + item j ([credibility]of turtle (i + 1)))
6 f( a( X: v5 D" M. G6 n' c;;*(exp (-(people - 2)))/(people - 2))]

6 [; t5 S/ o; Y! @0 Wset k (k + 1)
6 m" W) ]( i# T7 t9 K( z]  O2 L9 L$ k. f& n7 z7 ^
set j (j + 1)/ e% T8 I5 J$ I+ L& T8 Q' t) W
]
+ I' R* Q2 O3 p" E/ rset note (note *(exp (- (1 / k)))/ k)
$ e2 i3 l, K! k2 |# J; P) F* f% Eset credibility-list (replace-item i credibility-list note)$ {% J$ g) h  D9 L
set i (i + 1)
# x: ]$ o" t, s  N) e' D, d]9 d( T. u6 I9 T9 `1 B1 ~
end( F4 ~& H2 T8 @

$ Y% d9 e9 y% F( X6 P' Yto update-global-reputation-list
& x: q9 [' F* ?4 u0 o) Y6 Ilet j 0
0 }0 ]. O- z2 X) X8 p* ]while[j < people]
8 d& n, b% ~8 ]0 \$ P[6 U! ^7 O8 l' w4 D# d; O
let new 0" ?2 J, W5 ~2 w/ ?
;;
暂存新的一个全局声誉$ F% n$ o+ C2 P9 ~9 c  O7 Q; f
let i 0
6 J7 v9 G4 r# Z* N$ G8 J& rlet sum-money 0
8 l/ H5 T# h6 \3 e) Z  ~% tlet credibility-money 0
. o2 ~1 n, v/ a) P8 F9 Xwhile [i < people]
+ K- V( P& w6 M[
7 n9 I) \% I& o  b8 B" Gset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 E. |2 k' ?+ _! h% X% D% x/ bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# M0 Y8 B  w2 G8 s8 ~, L6 }set i (i + 1). h/ u) R! U$ j$ O4 n3 h
]6 f& T7 h0 W8 c2 s8 i9 Y9 I
let k 0
* f7 \& {  D; S! E2 Qlet new1 09 h0 g3 m" m1 j) O
while [k < people]+ ]1 H. I* a2 ], i1 T+ O
[
3 F& I" `) y: L! }* Y: ~( K9 U' D8 U) x; hset 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). g2 A2 d) e2 Q# N1 [
set k (k + 1)
/ x+ z7 g7 r8 s' |* m" x& J; p; n" g% J]
4 ?6 r0 a, P& i2 f+ [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# z$ {. ]4 i4 H* p% zset global-reputation-list (replace-item j global-reputation-list new)
6 T8 Q5 {% D0 hset j (j + 1)4 O3 E, Z( @( O  R' q8 r
]
( t; l& Q5 E# J$ d( {/ Gend
$ p; `6 O4 F- G( X" l* J; o: ~! v2 m1 g& D# O
, D9 }1 l, y* R( o1 J5 g

+ B! ?1 h& K) [; k. zto get-color; H+ _" y; J0 Q" S* K7 e0 E
3 U$ a( i# d* z* F# u6 j9 Y
set color blue

4 A" Q9 y5 S& S1 _3 G* Hend
. b2 W+ z6 ^2 G; h4 w1 A! N# U- H( Q1 }4 C) z
to poll-class
) W% X7 O) u* d4 R- G/ Wend
5 c+ y+ R& a8 n- W; ]" m# w" r
2 C/ N: B% {% c* f6 @8 Pto setup-plot15 r: \4 f0 M3 X& \

* y; Y9 ]9 d- n8 r: L  m7 d: Eset-current-plot "Trends-of-Local-reputation"
' [. ]. Y" |/ B2 w1 y8 R0 v
) @1 f2 U; y% [
set-plot-x-range 0 xmax
: E6 O( q9 I! v; U$ x" k) E
. ]+ E6 Z& @' D2 t
set-plot-y-range 0.0 ymax

% E9 ]# C3 B4 a5 l0 dend
8 @' c$ B; v! }: ]4 }9 B+ G+ Z
/ @* h+ Y5 Q* \( bto setup-plot2
! Q( h+ w/ t* E. X* \4 l5 \6 G. J+ F  g( G7 y
set-current-plot "Trends-of-global-reputation"
9 ]+ q0 ?! {4 k6 ^1 h
4 s, \% N, y5 l: L" v9 K
set-plot-x-range 0 xmax
2 ]) h$ @7 R0 s% b7 S

$ s- c8 D, I8 k. O8 S# \! gset-plot-y-range 0.0 ymax
/ G1 Y. Q4 D" y; l$ |( R) e) j
end; K9 B; n6 j$ r

: I8 i4 [8 v5 R/ \7 a1 b2 @to setup-plot3
2 V4 d5 ]# R% w; j7 @9 v7 O9 {1 B/ V) R2 [
set-current-plot "Trends-of-credibility"

; ?4 N! l7 Q* ]7 h6 c/ A1 s" L7 i4 f+ b3 m- f4 z
set-plot-x-range 0 xmax
  f$ q. {! m$ @' _' N$ O, Q
" W  n  A2 X4 W' {& p' g9 H
set-plot-y-range 0.0 ymax

4 L: l2 s* @# p) ^8 send
7 W. `: L5 Z; d! z) C
' k; o9 k2 }+ T, G4 [2 @7 C7 w$ dto do-plots
/ o" W1 A" _  p, |set-current-plot "Trends-of-Local-reputation"
( z* T2 v9 k. o. j- _4 A6 x: Bset-current-plot-pen "Honest service"
+ P3 I) o" C7 Oend# k# m8 x, a2 u: c2 Y2 i
5 v" |! @: h- y! Q9 n* H# q8 s
[ 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.. `. {- k' ?; l% f# B( Q8 W
3 ]9 x. S7 k+ ?" m  F# i, S2 E; 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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