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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:
' B& X- o2 i; k! V# f$ Oto do-business
) C4 o% `/ w' E  } rt random 360$ _  L7 ^& p8 c* U
fd 1
/ ?7 B9 e8 S# T4 m4 s5 g3 ^, b ifelse(other turtles-here != nobody)[% Q  A; d) q+ s. c; O
   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.6 w' R: P3 f& H5 h9 ]5 p! R- h
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 c. R. L9 o. y' c+ \( Z; f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% I7 s" Z: Y, C- v3 B   set [trade-record-one-len] of self length [trade-record-one] of self
0 C& G, p! ]9 X# U   set trade-record-current( list (timer) (random money-upper-limit))) Y: ]6 w3 V" r. n

& c4 `5 _# g& l# g问题的提示如下:
/ k, ~# i# u) P( t5 y3 x! S9 [/ {. m- i0 B' ?2 m4 t
error while turtle 50 running OF in procedure DO-BUSINESS
) q9 v- N3 Q1 M* K2 o  [  called by procedure GO
" O7 d$ m4 @- v# N" tOF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 P! h3 D3 X! o1 b. c8 c; }
(halted running of go)
5 ?. C0 b; W0 {
& o9 u2 N! j7 f$ H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~~* _  z& I( l; o' [6 M- |9 h
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8 ~% Y. f& B) w) A/ }6 p/ C
globals[
9 [- [" F5 q1 {. `" h0 e+ qxmax
3 k( l9 D  M* x! p1 \7 ]- S) xymax% Y. m$ O0 n. ^9 g: E8 [
global-reputation-list
! ^' V' w4 B4 [9 q, s4 a4 P$ B; V! F! z
;;
每一个turtle的全局声誉都存在此LIST/ B; O7 k7 d9 v" Z
credibility-list' `2 S# X0 n7 I
;;
每一个turtle的评价可信度2 M2 o  G2 N! X) {4 U( @! \& j
honest-service
  p' G5 [" ?, G( N1 a" dunhonest-service& @; p& n7 J* @7 j
oscillation, l, @9 y4 j3 B1 j. _
rand-dynamic* I& L- X2 G0 r8 z2 I
]
0 T2 @7 j- C; X# F( [' O3 E5 C# w, F( a$ P7 J4 U
turtles-own[( r' e4 K. [* e7 R/ [( G  K+ c
trade-record-all
/ b5 x/ @3 s5 d) b; [8 z0 K;;a list of lists,
trade-record-one组成
% V  H# Y8 \# l+ Ntrade-record-one( o) R3 q  e: _* L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& O0 c: S# H5 Q' T4 P+ Y5 G4 P% ^7 V4 ^6 n
;;[
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]]
" ~. L& e( s# _& T8 htrade-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]
$ t1 {3 @. i3 M5 L* Icredibility-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+ g3 e7 \! U# a: n
neighbor-total
- ?! q% E' x! s3 }+ R3 `;;
记录该turtle的邻居节点的数目
& ]: ^6 v- s/ i! v' ^$ o( I, Otrade-time
5 a7 t. ~' m6 m0 N6 R  B" A;;
当前发生交易的turtle的交易时间
$ z+ I( q2 Y. C# Y& `' L0 }appraise-give
2 g$ j- q  q/ w;;
当前发生交易时给出的评价2 w9 {: ~3 u5 ]! I1 Q
appraise-receive" P4 H; i) S. O9 j3 a
;;
当前发生交易时收到的评价7 e" \, L( K3 c' p" M+ @+ `5 Z
appraise-time  y. Q. [2 l+ \# m- ^
;;
当前发生交易时的评价时间+ W& G3 h5 Q" `% @* j# d* U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 J3 U4 W. h0 V6 k1 H* `
trade-times-total4 [8 s: y! ]( ~0 \
;;
与当前turtle的交易总次数
# X' q' ]5 J! G; J) @( u4 T* strade-money-total# Y! d  P- ]& e6 C
;;
与当前turtle的交易总金额2 ^  ]4 W# _" o3 N* g6 ]: R8 ^$ F- d& }, \
local-reputation
/ m: ~3 ?6 R: ~' J& a& vglobal-reputation7 W& b9 w4 {$ N" {1 Y
credibility* z9 t5 v5 `& x6 t& X
;;
评价可信度,每次交易后都需要更新
, C0 z% N  B3 V. p, dcredibility-all
/ ^0 d- Y4 U7 [7 q1 a;;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
; b: v% F% e: Q: e& {: r5 I/ m6 r6 p1 O( T
;;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0.55 M$ i; R7 l8 s' L
credibility-one
0 R% F8 Y7 b* h;;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
; N: }" m2 k! Eglobal-proportion; |6 k: U1 L, O- Y$ C) O
customer
5 N8 }  y0 p( Rcustomer-no* s4 Z# W, c: z
trust-ok% ]) A/ K* H" N
trade-record-one-len;;trade-record-one的长度; l' ~* I: D# P
]/ l/ D9 K9 B8 T- q

2 M- i2 Q: N$ a9 l" j: X3 s8 [;;setup procedure3 [0 O( |" Q6 C) {; S5 A

& V  B' q$ i$ ]  V: Oto setup
* O% d, O  G  z
7 Y% l+ S5 d- [. Qca
4 q2 s: S! E+ S8 P# t$ [. K

2 _. n, G! I% x( ginitialize-settings
0 I: ^# v. R1 V; }; s; ]
  m/ e7 O( E. |, R( y, \& @: D
crt people [setup-turtles]

4 i; U$ |0 Z' s. z! Q5 e' B; G' @& g2 @
reset-timer

$ j6 Q8 ^- Y7 M- b, u& K  C6 ~$ H0 i# f* n( W& P5 O
poll-class

/ y, p! `" Y' K; C/ [7 J- j! r8 `: N: N1 d/ Z0 \9 c* }
setup-plots

+ ]& d* v" m$ I! U2 S+ U7 ?5 {) T9 b7 j1 S  U- h
do-plots

# Q& W- l# v% G2 C7 ?0 Qend
  j- g$ |8 w' m9 o( t/ ^
& A& W9 O* g  ]2 A; C0 Z9 G7 lto initialize-settings
# m" v+ P( j- K3 N* L
- S7 _8 r2 z  s. Z" V8 wset global-reputation-list []

& G5 q& g3 h- `" U5 c
7 t6 A& i. m2 W4 q3 f3 z, Nset credibility-list n-values people [0.5]
$ Z2 n/ b- L9 D+ g( U1 O* A

6 o8 @$ @) ~5 x/ Q. \2 y  Y" u7 nset honest-service 0

. {8 M4 h- b$ ~1 d9 s# b3 o. V1 a/ R1 f4 A) r0 I
set unhonest-service 0
9 v: N# u3 D* s
0 e- p, v' ]# j# ^5 a. |" q, ?
set oscillation 0
3 X$ m2 t. k7 v1 O! O2 R
: ^5 e4 c, g- g2 n8 ]
set rand-dynamic 0

) w# m7 P3 D) _, h, e0 i8 Q. }+ nend
! S0 z; O9 X  \# C+ ^. E
$ \3 N, |0 ?" ^; P+ P. S% [4 Qto setup-turtles 2 S; H% Q1 s5 `+ R  w
set shape "person"
0 h5 y$ `+ M, z  n% bsetxy random-xcor random-ycor5 o. i+ K; x; `4 E& S: l
set trade-record-one []; N% m) M$ y  o. R+ O

8 M! f( T) x+ k3 lset trade-record-all n-values people [(list (? + 1) 0 0)]
6 @( w: `* [7 s* Q) v: l& t& X$ j! d

2 ^3 _  G; \& g  K9 i, Xset trade-record-current []. j" v4 E. J8 d: m* f7 E/ ^& i7 m
set credibility-receive []. \" Q' ]0 W4 c* e) D2 h: v& J
set local-reputation 0.5
- }# C4 v' p! [# {0 kset neighbor-total 04 K9 d0 I6 u7 x
set trade-times-total 0
6 x1 p5 Y7 b+ t/ s3 i* nset trade-money-total 0
/ p% a, s0 q! B2 Wset customer nobody0 D& M8 a( Q3 J% I
set credibility-all n-values people [creat-credibility]
9 w0 c. z' _$ Mset credibility n-values people [-1]
8 C6 h5 W0 r/ q" `2 ^7 k/ `5 Gget-color
, U; j3 [% u1 b! j

  c3 j) M3 ~+ r- n$ E9 j6 f# I4 ?7 v5 tend
, Y. x0 {8 C1 p9 \/ M/ _
3 F+ \# i0 i& I0 `- \to-report creat-credibility: t4 K* G9 D  i. ~
report n-values people [0.5]
$ ?. {5 B: S; ]1 Uend
  G0 L4 c! z( ~6 u7 i) g; Z6 i2 p; T' p7 ~9 Z2 L" B6 I4 n
to setup-plots
" u& L' |" Q) o# u; D' N- O+ X, f/ U7 b* P8 u
set xmax 30
5 t3 V3 P0 Y! x, ^7 T

# c* J8 S7 l- b! t1 X8 `set ymax 1.0

+ n' ^8 ?; X2 J5 F+ K. z6 ~
' v7 ?. G/ V3 ~/ u" P8 d$ Y$ Jclear-all-plots
# T- y! Y  X' C3 U. ^

, Y' h' `. I2 j% w9 |% {setup-plot1
7 g" |4 s- `0 Z) S2 z

- r; A2 C; w8 v% R. Xsetup-plot2
5 ~% ?2 L& O6 T3 }  j
7 D$ _) h0 M* _7 e* k
setup-plot3
/ x: u* o3 p5 d; s, M, F
end. {" n4 o( u2 j$ j! L# Q, ?

0 ~4 E, s* Y- m5 G$ D+ H;;run time procedures
, T1 h% R/ |5 ]: ^' |& H# c8 C
. e) l  V7 J( }- [to go
( R: u9 P9 j8 z! T: o4 G& I  b3 ^! A1 r5 E7 \" A/ V4 K6 r; @; o
ask turtles [do-business]

/ `3 T& \( F4 V0 M7 g% |5 }* hend
0 m( U( v' U. k. @7 \2 ^* d3 R9 m5 G
to do-business
) [( k% b; c& U3 B  |
& b" T# _2 m3 L- X& _8 d. G
& m$ w0 y% q% W0 a9 V0 ~9 \6 y2 V
rt random 360
- Y5 t' B, ~/ z8 h9 x& f' b7 ^

& J6 z5 C1 D; }) k' ffd 1

& E* U0 p# m) w. e4 H$ l
; {; [. l8 {' ~7 o& yifelse(other turtles-here != nobody)[

- j2 @1 |/ b6 F" Y# X6 {' ?
: g* [4 Q$ e% _. j! s: d; zset customer one-of other turtles-here

7 I# x) C8 Z! O; k  a4 t# h% }" h# x; Y( @$ }
;; set [customer] of customer myself
3 s5 F0 L3 H2 D

6 x" [1 W1 q+ a4 kset [trade-record-one] of self item (([who] of customer) - 1)+ A" q$ [/ m2 K/ u
[trade-record-all]of self
! I. ]( T0 C, [/ c& u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 f  }& p  r1 ~" @

+ K9 b& {! c9 q' |5 dset [trade-record-one] of customer item (([who] of self) - 1)
. r% `7 R% ?* {[trade-record-all]of customer
  I( y0 @! Z# L0 G  t- T4 I6 ?

  r& z' c" r# Zset [trade-record-one-len] of self length [trade-record-one] of self

) i8 n% L/ w: }+ {/ B
4 t! ?8 p! e' K& |7 w$ rset trade-record-current( list (timer) (random money-upper-limit))
  N" P7 i- k9 I$ G" \

$ x7 }0 c# w2 A$ e) H2 z* \ask self [do-trust]
& s9 c8 ^8 L1 U* n5 c2 k;;
先求ij的信任度) d+ s, j- g% E( |9 K2 `3 b& v9 V% K* i

/ j  i7 X: V# N6 X$ xif ([trust-ok] of self)
6 Z% W0 |) _3 d9 B;;
根据ij的信任度来决定是否与j进行交易[
) F4 P) q9 x4 q& Y( w1 v0 Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 u& G5 \* T; Z, j
6 W- \+ Y  ^4 `8 Y. v[

% K; C7 V% X) G0 r6 Z! j5 ]% c' v1 h7 m/ i
do-trade
/ G( V+ j9 b, [4 E

, p5 U7 w7 j' A% @update-credibility-ijl

. Q* i  o3 Q' L0 R- i5 J
2 S# W, n6 A& S( o4 jupdate-credibility-list" M: o! I6 T4 G0 f
: I- k1 o2 a+ ~% p- g  Q, z, l8 U
  Q$ `& Y! U3 s/ ~2 u
update-global-reputation-list

) O) i0 Y3 R% y( Y) R& }% g: W. s: M/ E! w
poll-class
8 J* @7 g0 {3 \/ i) r

+ Z1 l% M1 j. ^& ]1 z8 ~get-color
: _7 |+ k9 |& x- ]6 T6 i2 p1 t9 M

, o9 q# V) t  ?! l. X]]  }. k" {2 V7 C

1 I) e4 h/ L3 |* S;;
如果所得的信任度满足条件,则进行交易% M, \+ r( r6 s0 M& i1 `
: H- _8 u" |. p/ ~2 G3 o
[
' O. \  l* h6 P& U% D
# e) l+ k! z& C5 }3 ?
rt random 360

1 Z' k9 y3 Z' @% l# J5 M# |7 z% p
  e7 K0 U* B9 |" D( r8 zfd 1
! o" J# A3 a' I# B, |

( s% A) I- m. M% ~]
& c+ [/ f2 L' x5 E( ]- j$ A

3 V& A4 n; Z. x; ^& L$ N& bend
7 o- v) S$ P, j+ N

9 W# ?1 l3 {6 {2 R* Kto do-trust - x9 W5 b# n" P: o$ O
set trust-ok False. l& j6 M; W  X# W* \& S% M

# F( U; j( Z" E8 c2 j" i8 }

6 i, @- {7 E& y8 |let max-trade-times 0
. L; |7 k4 V' F& o" c8 l( D" v. fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 E: M  U0 R2 u- i) Q7 Y/ a
let max-trade-money 04 q6 O# k' W) R, A  Z. j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& H( A; L$ ~. j' d: a. l( Z! Q* w. @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# }& c1 J. A. {2 h( j
% w, v: \+ }4 t8 S; B  e8 s# R
2 |! k; \. d8 W/ A8 k% o# v
get-global-proportion) ?) w2 D. d$ d3 H$ c  y/ z
let trust-value
2 T  Q  f! C" V, [4 j' w9 Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
2 @0 _  Q! Z3 B' c0 c/ s
if(trust-value > trade-trust-value)
. ~0 \& |: [. L' }: [+ U[set trust-ok true]3 T9 v% @: p, k% E; v
end8 T' S$ U* }! U7 u4 B7 h+ P$ [

- j9 {) M- D6 zto get-global-proportion
0 R6 v: o' F1 cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( Z/ A/ U- t1 h
[set global-proportion 0]; P3 f) G+ Y5 `$ D2 {6 X1 o
[let i 0! m+ V8 a* \  ^4 P
let sum-money 0* F8 j8 w7 S1 k$ s
while[ i < people]
  I) G% z2 r1 n; o" R[* G; M: j! l7 p% V3 E
if( length (item i" D' ^8 |0 u. [
[trade-record-all] of customer) > 3 )
3 u1 }- Q! l( m) M- g2 C: |4 H7 j
[
* m. W. q- p1 H  ]$ p  xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 U" l& |/ l5 K$ W9 @2 a0 \+ z( e]
7 t- n9 M$ k7 @- a3 I% W: w]  M% u" w5 W) j$ T6 e0 U# u8 K
let j 0* c( m* k* x0 T( S5 r0 [' C
let note 00 U' }3 j6 M: g: T
while[ j < people]
8 h! O; y* w- R[) r# w/ K6 T. m* F5 S2 p$ M
if( length (item i% @- d% {  }: H' I, S* w
[trade-record-all] of customer) > 3 )
& L, l) W5 _: H6 K. ^, }; n; s
[
1 l3 y. T/ H  ?4 w! s8 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& Q; S/ F7 `" p8 f! f) d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 K; v! X3 }: }/ I, E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  e9 k/ N; Z$ D7 m; G
]' p8 J, E4 u- ^0 T- x
]
: }+ E* V, a' j$ ?- j' |: ]set global-proportion note
; A9 X  f6 ]# T/ f" y7 A: b; B]
! U5 r: ^" V6 Q  U* x1 ~end' P( l3 D/ x4 o1 Y

2 q7 \. Z, C8 ^: wto do-trade
6 x# X# p! K9 w6 z) ?; _;;
这个过程实际上是给双方作出评价的过程: K/ ?& F, f5 ^* G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! \0 Y$ R4 J4 n+ V0 K. l& uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 P9 U2 i5 p. `0 r; m& `& Eset trade-record-current lput(timer) trade-record-current
4 m+ R% G% m( \& S;;
评价时间' r' }1 ?7 j% u# X$ d3 r0 N/ p; }2 c$ E
ask myself [
; _7 w1 F+ V1 J) f2 rupdate-local-reputation
% K' t, \# f% Aset trade-record-current lput([local-reputation] of myself) trade-record-current
0 s$ t) h/ R, e5 ?) s: L2 ?/ r" d' }9 v]
# g" G6 X4 M# qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% N  e  m* M/ W+ u( I;;
将此次交易的记录加入到trade-record-one
6 C6 j1 R# j1 i! W, _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 R+ K% _! U/ x, @5 G, Nlet note (item 2 trade-record-current )
3 I8 t7 Z- c0 Z! f  I; W3 o4 M) u# Tset trade-record-current' k* y1 I$ @+ W# |( h
(replace-item 2 trade-record-current (item 3 trade-record-current))

& n' t* |: U( d& Q) [7 \% f7 }set trade-record-current
! V# S  _# ]1 @(replace-item 3 trade-record-current note)( w2 i# `: k" R5 O3 b* v
9 f+ }' n3 L  s% `% b$ r' {
8 |# y* P7 u( o3 j. q
ask customer [" {  U) G7 P) H! M/ h% Y, _1 l5 \1 J
update-local-reputation
' X& V+ [' S, R2 S6 Kset trade-record-current
2 u4 a( b( @& P2 ]+ j7 J. `(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; N% D" }2 u1 G+ F' D1 I
]7 m# a9 \# {" p' L8 p; K  `* h
, e, i  Q* }2 c1 I+ u
3 r+ k( k5 z- o% S5 \
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 q* [5 F3 p' t( C8 \0 ~

% V4 Q" ]2 {+ I; Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 @6 D9 u3 Y2 n$ M9 C;;
将此次交易的记录加入到customertrade-record-all
/ A5 s% H6 e; v2 B* Wend! [5 n' Y. c4 R1 G; F. Z, `

& B  T6 L( F" I/ G% p: pto update-local-reputation- ]5 X9 @% b! I  Q8 L: E+ C
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 f  P) P+ M0 V' d. F
( @+ p3 _  Q# h
5 S6 I5 p9 ?6 h" Z% L4 L;;if [trade-record-one-len] of myself > 3

% e: b9 R) p# \9 f! dupdate-neighbor-total5 u" g4 L4 \$ F1 D' C. j7 B1 K) x
;;
更新邻居节点的数目,在此进行
( w. B4 H" \) E  }let i 3- w/ A5 E8 O( {) s4 h
let sum-time 0
9 s* g, J7 B  z3 O, o4 ?: rwhile[i < [trade-record-one-len] of myself]
- B9 q3 Y9 q5 o- R8 I9 B& C+ a[3 q2 r  i: Z: V! u3 d2 W2 U  s9 Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* f9 W* s3 l/ v# Y; F/ ~set i5 G; f+ H' B( ?$ Q1 Q9 j7 Q
( i + 1)

# u- W# |: d- Z" f2 i0 L]2 T- }( |5 X+ @2 P  s" V: `7 a0 l5 g
let j 3
8 D" r& D, o' _7 y& I1 Blet sum-money 0
: P9 l. k" }! U$ W, |) b+ Fwhile[j < [trade-record-one-len] of myself]
, x" b- D. }! q) k$ F& Y[; ~7 e1 x/ I2 D' {: c4 W! x0 Y3 ^/ L) r
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ c4 q, f+ b0 H( N- U7 M: w+ fset j
" R% O, J, j  w: E, W( j + 1)

& |. A" L) z9 L! Q5 R* i]
# M5 D1 C9 y. L  Llet k 3
, ]& ~4 ?* J2 llet power 0
% q+ a$ E3 C9 b- j9 \let local 0
2 w" ~) D2 i+ Q# _while [k <[trade-record-one-len] of myself]/ t6 j/ Q" c2 z; @; D1 h, j$ ?
[
8 ]3 N8 U+ V) D2 mset 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 D( H# m( z# ?& g7 O* _/ aset k (k + 1), v% O: k: B5 @$ ^7 `) G
]
* U8 Y+ D. }0 x  mset [local-reputation] of myself (local)
9 k9 Y9 c) e5 G7 J& I1 Vend
1 Q% {; ?0 U% {% G! ?
8 ]) u1 u, _' xto update-neighbor-total
5 F2 P3 {8 e5 J" I4 F
: O6 m* d/ ]7 r3 d8 q0 Q- Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  A: a/ S8 V8 Q+ g( j9 a

2 K% [. _& B, |( K+ e, u

# P8 K; r$ y8 }5 _- F; L7 f% l! hend
* k( j5 w# s; p9 C' p/ ?6 W+ o% C( j( d) ~5 N. q" }" O
to update-credibility-ijl ! B6 c. A  f) Z# v' \" g

+ }4 E8 d, s5 S3 m* `;;
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。& h2 w+ t7 b" w
let l 01 ^5 e/ l1 }' e, u
while[ l < people ]# J. ?: B6 V3 H" T& C! g
;;
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
0 @: k8 A  ]* Z: Q[
2 w4 p" y6 G+ jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 r! {' t1 N# A# @
if (trade-record-one-j-l-len > 3)8 E1 q$ H* A" o$ I% a
[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' Q, {0 g+ G7 ^5 M9 U) W
let i 3- w! @8 ]9 V$ ~2 p
let sum-time 0# y6 b5 Z$ i" |) _' f6 j
while[i < trade-record-one-len]
) H7 J- f$ v+ n$ ]) g[- ^/ m1 j8 t' z7 P
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' u. s6 `4 ?" ?+ j6 E& R$ Y9 u) l
set i
. I& @/ b0 P9 s1 _  }. D8 ^+ B( i + 1)

& o& r, v/ p" B4 O* c]$ _7 D- B: m/ l# a
let credibility-i-j-l 0
% W. i% s; m1 s# [/ _. ];;i
评价(jjl的评价)
! h* Y4 Z! P* q1 qlet j 37 R3 Q9 u1 ]+ }1 {
let k 4
# m: H  C/ a7 K. Zwhile[j < trade-record-one-len]# E2 ?/ O6 n/ m+ d- O
[3 ~+ I' T4 ~5 ~
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: U3 d4 ?9 @" \+ 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)
# m- Q. y7 Q2 d( r9 K  O! ~set j8 W2 O* @7 ]- f
( j + 1)

! W  l% d# c3 S6 b6 q7 ]: d]+ W7 G, ^& w$ ~0 w+ E6 ]
set [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 v  t! ?# I% I: A4 |) D" A. a4 c$ c
& H0 D2 M- N  S  O2 h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! V* O* m( c- }+ z4 c4 q;;
及时更新il的评价质量的评价9 E* c5 W: e5 D5 u  W0 Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 F8 q0 ^7 s2 |7 N4 kset l (l + 1)5 i) A8 q* f2 J- r
]
1 V: Q4 h3 x9 O# K  Q2 }+ aend6 N# [4 Z, n8 r9 i

5 c* c9 R# x/ Pto update-credibility-list' [6 ^% ~( N2 c- e$ Y
let i 0, Z8 u3 h* g+ @  M
while[i < people]
3 g* H5 H3 J; h& J* M6 B[
: ?7 s. c% Q8 h7 Blet j 0$ ^0 K1 z9 \0 h& S" n% O: t
let note 0
/ p2 J; Z3 D' {  V4 C1 Elet k 0
) ?% y- i! J. f8 _$ L; U7 T" W3 {' y;;
计作出过评价的邻居节点的数目
7 s* q+ y' s6 t0 [* e' o& o( F7 jwhile[j < people]! |/ Z  u$ \4 {6 V9 M4 i. z( v$ q# c
[
; n5 ~/ x4 f9 [: O% y' Z& Dif (item j( [credibility] of turtle (i + 1)) != -1)
+ @4 v0 D# X7 [) ~5 j  O;;
判断是否给本turtle的评价质量做出过评价的节点0 T4 @* t, x6 Q) U
[set note (note + item j ([credibility]of turtle (i + 1)))
# [# H7 {% z# `9 T$ D, c;;*(exp (-(people - 2)))/(people - 2))]
9 E5 p: P* ^" v5 K, \
set k (k + 1)' f: \; ?0 O1 I9 _
]" I" T, N5 M& {0 R! L8 x* O* J: c
set j (j + 1)
- X" d9 q9 |2 `6 J1 @* A5 z4 B, J]+ @: d  N0 s/ L4 O( v, ?
set note (note *(exp (- (1 / k)))/ k)( T+ H4 j$ ^4 V3 U
set credibility-list (replace-item i credibility-list note)* J/ t. X& R8 W
set i (i + 1)' n( {1 r* K! Z* n  [
]
: ?- v& Q7 \2 \end6 ]1 d1 J* R, U% e( N8 ~  m

/ }- a3 \7 N% t, o& ^& p2 V8 z& }to update-global-reputation-list5 Z1 f6 |9 ]' z" c; s
let j 0) D, I+ X3 b& ~2 z% D
while[j < people]
! }! Q2 Z. R4 H  Y[
- X& k) Q* J8 X2 u& vlet new 0
! K  S+ w5 K; K7 i5 A;;
暂存新的一个全局声誉# w: H" A0 N: V, S
let i 0
  g( X) |# W. s3 T3 W1 V( qlet sum-money 0
5 a: {$ Q( O! a9 e) d$ Elet credibility-money 0
$ s. b+ a" P) A3 V/ a6 F4 r) qwhile [i < people]
5 `: z3 m0 @7 H+ o( k[
" [) Z' ]+ E0 L" a; Tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  ]+ L" K, L& h- _set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 N2 h1 @  J' {- c/ h8 k  H
set i (i + 1)( H) @4 V5 ^# X, t6 `$ h, v
]0 H+ y/ n- R7 X9 a
let k 0; A2 F& j2 a" B" f
let new1 0/ _- `7 {! G# s- ^
while [k < people]  S: t; p/ h& h3 L( t
[
- n$ o9 ]' y$ a: o9 m5 W2 c1 Zset 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)  H; \! y$ `- T' i6 L* P
set k (k + 1)3 e7 M4 j1 |+ A
]" N, O* V3 F0 P- Q. x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; w( K. Y3 a! E" ^! ]5 t
set global-reputation-list (replace-item j global-reputation-list new)
% K/ w, G: E) O' k9 bset j (j + 1)
) n: r7 {$ ~2 a& m8 }; s]  k: p  P/ U0 d% s0 {9 O  [
end- Z3 z% h! o8 n, u

" o: ?8 g& x; j' F' o+ x/ f% K+ K. U  m! n1 ~% V1 |, \
$ p! R5 E$ B) `' v) p1 J7 {
to get-color% G5 V: [$ F% D# G4 ]

, j2 r: }# ]+ [2 w! jset color blue

1 q- E; C7 d  F. F" }* j- cend# H+ v: _. o2 \

2 m$ {4 ^) h2 {. ^* u, l' U0 uto poll-class: I# m2 v. m9 X; O' R5 f! J
end) [: \/ n2 g" X
2 B( U5 v3 x; }7 R- u) i% K9 `
to setup-plot1' O8 t+ h$ `' W( p

5 F& m3 z( A. ^+ J$ rset-current-plot "Trends-of-Local-reputation"

, N6 D6 B) @" L2 E0 @% H& |1 R: E# ~0 m5 s: B/ U: V3 v
set-plot-x-range 0 xmax
# \; @( x. ]9 j* V8 D, [2 Y% x, G

- b3 R: o% C/ Q0 e9 ~7 ^  P! Kset-plot-y-range 0.0 ymax

! c6 a$ A9 L4 c3 L) ]end7 d9 v# Y3 Q4 g( P. B

) e/ N8 a. K6 i6 {( ~/ K) Nto setup-plot27 i- c" Y. G7 l8 V$ D2 ~

: I0 e6 a8 q( s# g, |6 Bset-current-plot "Trends-of-global-reputation"

: J2 s/ \( F7 H1 `+ Q9 x
( s9 b  f9 ^5 x9 s: Y+ Jset-plot-x-range 0 xmax

8 j' J0 R4 ~6 d7 E9 e) _5 o. r8 W4 X/ E/ G7 @$ u5 M: E
set-plot-y-range 0.0 ymax

8 X- R( |9 P8 n3 M8 t' }5 Q, z1 aend
. U0 d1 j1 l" D: {: ^
  t2 ]7 B8 L1 V" Wto setup-plot3  S9 f* g6 b4 Y+ G, t6 m' t
4 V, n  F* |( E1 h
set-current-plot "Trends-of-credibility"

7 `. ?- b4 `7 a9 {/ u
) K* A& ^8 D& h; ~1 G, i, Iset-plot-x-range 0 xmax
. m3 P; c" t" z$ C

/ L' N( S9 r+ K/ P# P8 b4 b9 kset-plot-y-range 0.0 ymax

1 O$ J/ q: T  ?* ~+ X1 E1 \7 jend0 [* [: s' B& f) z& y5 u5 o# n

+ a$ }7 d3 g1 j! j( a$ Qto do-plots
8 v4 J) E1 s* E0 eset-current-plot "Trends-of-Local-reputation"
6 A+ O1 e* o* R% X8 k; t4 Jset-current-plot-pen "Honest service"
. Y, v2 j2 B6 F* \% C' c: Xend
1 x( r; n* }5 D, N0 [( h# X
7 \! c6 v0 C6 j) A[ 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.
/ ]2 J# R5 m8 W- u, G; ]; K* t7 T% {" X- p) f' o4 w' x, x) R) L" t6 R) f
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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