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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:
& s6 L8 I6 \8 S! W6 X4 Pto do-business * S7 ~9 ]) }" ~2 h. e3 S
rt random 360
9 L  U* K$ F" p7 y0 O0 m3 q/ ^  W1 O fd 1) P4 g$ X; k3 ?
ifelse(other turtles-here != nobody)[
; X- V" v" o1 d! n/ [" n   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.. `$ ~1 j( ~  f, u5 M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + Q3 H# s8 d3 N! i: Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  l% u3 l3 j; x8 F* y3 o   set [trade-record-one-len] of self length [trade-record-one] of self
2 B; {5 n6 U# [% i" X2 c   set trade-record-current( list (timer) (random money-upper-limit))
' u- C3 P. @+ E' e
4 ^  R$ \7 D9 @( F5 |' i问题的提示如下:
, W# U; W& i1 q) z& U) w" k8 @- K+ F5 m
error while turtle 50 running OF in procedure DO-BUSINESS
; ?) O% |, b( S1 ?9 K1 x  called by procedure GO
+ x0 d7 M( v4 d: E  m. |9 Y: f. wOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 K# F) d+ w/ l
(halted running of go); U, T( r4 c, G- t* J& t
0 \0 s% c' `0 Q8 C& N
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~~' X, {: ?' L0 \' {
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
2 M' w1 e( |! t# d/ Q0 `globals[3 Y# M2 }* }7 m# K' ]
xmax
  N- @6 v4 t9 K* }ymax! w2 u  w1 O- q( x
global-reputation-list
+ U8 A; c2 T( ]9 J2 R5 u  a3 ^5 L  N3 `+ l+ c- E# K
;;
每一个turtle的全局声誉都存在此LIST3 {7 o+ h5 x1 i
credibility-list
* f3 ?0 t; R. g$ k! W; O;;
每一个turtle的评价可信度% v& T9 d; a" F
honest-service
+ l+ ?/ S3 N$ z* O: P8 C- Hunhonest-service
; u# R. |7 W: z% Goscillation
9 A. m5 t# l- D, P; \" `rand-dynamic
$ Z& {' C! q; N$ v& m; f0 E]5 f7 H9 [$ R& ]* N3 j
+ L9 }( p1 ~5 I6 t
turtles-own[
* N4 o+ X" Y4 k# a8 c. f4 Ktrade-record-all
& |  E! o; }9 E/ \  o$ F;;a list of lists,
trade-record-one组成6 U# Y; H& s' G3 J: r2 m8 J
trade-record-one0 x6 s" w* y( p1 H1 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
  t0 ^2 z+ m( d9 B- H0 T5 E2 M: S, e3 Z7 o$ i* M" ~* _0 _! }7 h
;;[
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( a0 P0 g4 H1 W' {8 H1 D+ U
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]
4 L' e& b! ?0 \# S  N2 p. l% ^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
3 ^$ u9 c0 C" k8 i8 W* W4 Yneighbor-total1 ~/ d5 h+ J/ J* m# J; a
;;
记录该turtle的邻居节点的数目& p7 ]4 b: L2 e( O8 Y# P0 n5 ?
trade-time
4 z4 M% o/ C5 z, E. B+ J;;
当前发生交易的turtle的交易时间
1 _' Z1 {& U/ F3 s5 s9 Pappraise-give
" }% A- h0 j8 z+ V- r  c2 n;;
当前发生交易时给出的评价2 {: `" Y" Z7 [! @- j
appraise-receive/ y  ?2 A  @0 R' ]+ e$ h
;;
当前发生交易时收到的评价
6 I; O/ o1 m' y3 d1 K$ ~appraise-time
" L9 q% J5 N6 o0 {! N  d. G;;
当前发生交易时的评价时间/ n4 @6 I" p- ~8 \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ Z: D, }% }" {, t- Rtrade-times-total
! h" P9 O) T8 u9 p6 v;;
与当前turtle的交易总次数0 L4 l6 U( s4 Z/ \$ _/ D1 Q& [
trade-money-total
2 i. a. x+ J4 {# e; x" E0 M;;
与当前turtle的交易总金额
; u! T# @+ c! ]$ ]% i7 glocal-reputation
6 W  A! l" O, d* ^' t$ O9 e. Y) {global-reputation
$ Z9 F+ g! N% U$ ]+ {credibility
, R  U* M: Y" Y! k" L3 B. m;;
评价可信度,每次交易后都需要更新
" O) N( W) k' {) i2 S' wcredibility-all' R/ Z! f5 ]9 ~( _6 r* 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
9 u0 j1 B' \- l! p8 d1 c/ z9 V0 I- D& @. D
;;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0.52 t6 c# q) s4 v" [6 k
credibility-one" R) e9 l6 B9 O$ Q+ ]8 ~
;;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
  d/ K6 u, Y7 d6 E  |global-proportion
7 v; D0 N8 D# O8 {* B3 i5 Xcustomer9 {/ T# I, A, e  k9 e& Z8 \6 D
customer-no/ c0 F5 Y8 Y. S
trust-ok6 r. N5 O0 Z, o  h1 Q! V# t1 O
trade-record-one-len;;trade-record-one的长度
- M: ?, |3 z2 d4 i]
( _3 z/ O: y2 a: A) d; r' d  g$ j. I* x6 b, u4 d# H& v9 v
;;setup procedure' {/ n; C# b& C+ g. W5 }
% ~; t. |: D/ N/ E' a% P3 Z
to setup5 X4 f  f2 @: W

3 g5 f+ ]' n+ d5 Y1 [ca
% E# N- t1 q8 c* t+ y2 |$ P% m

- o. q* [7 Y: p% T& V0 finitialize-settings
7 T& P; ^8 A4 D& Y  p% ]8 \- v+ a

0 j- l, B+ T; [5 g& s# Zcrt people [setup-turtles]
" u, D' W9 z- }9 g. v

" A5 ^& S/ ?: ]7 t. creset-timer

% w% I- K5 M9 `# T! S
1 C/ L! I+ i# o7 o$ M* J9 @( Wpoll-class
: p3 z4 R6 f( S- i  _: n' G. {
" h4 k3 b' K- V+ e* V- [# r
setup-plots

4 |& U& {4 l% }. d
. j: J: {% y' ^7 Zdo-plots
) D! q2 U$ c& X7 }
end
3 a1 A) D$ K, Z. K
7 R$ W7 e. O5 U) A# H7 K3 P4 Ito initialize-settings* N+ {$ D& G  Q4 l6 n. x+ N, [& [) Y  o

! i) ^2 f- C* X% k# h7 d6 wset global-reputation-list []
& B! ]9 t1 H* F  B; c

7 }6 L3 U7 @1 y! Aset credibility-list n-values people [0.5]

- J- T$ j* W2 t3 B* ~1 [6 ~0 s1 w" q/ G3 O- K8 j
set honest-service 0

: i" j$ U! D  e8 V( [
1 U2 V6 @( A$ E7 F& n" H0 l# Iset unhonest-service 0
. L; t" M+ Q$ k" s! s5 h

) O# S! Z; T, s# q5 x( h7 P- [set oscillation 0

) ]' j- Q% B0 W) H0 q9 L) J6 o7 b: {0 r) N* v! x9 m. |# J
set rand-dynamic 0
8 E4 X8 {- U, b5 {- o1 q% X. ^
end
0 B& g! i( ~7 [0 `4 C) L* f2 r/ A5 w. e' Q4 E! S( w
to setup-turtles
. c+ ^6 |9 ]7 ]7 X9 c+ aset shape "person"
+ Q: V8 Q$ U% u5 q7 F5 psetxy random-xcor random-ycor, U. k8 N9 G! n, u0 I
set trade-record-one []$ b& K' L$ j$ t4 [& `
2 t4 h# a9 m$ K) h
set trade-record-all n-values people [(list (? + 1) 0 0)]
( B$ K) C& ~, w2 F. E1 V
. U  [- H* p# e. I1 s  E
set trade-record-current []
/ [! X" _  T3 j' @9 u- R( |5 ^set credibility-receive []' X% `" ^. m6 H* B
set local-reputation 0.5) I4 T8 w- T) Q2 k
set neighbor-total 0
9 E) c! L3 \) u4 D4 ]set trade-times-total 03 d1 ?0 s. V5 `& c
set trade-money-total 0
2 a* l0 L% p, Q! X2 ^& T% Mset customer nobody
2 P' A8 ]+ z% Bset credibility-all n-values people [creat-credibility]% A1 I) m' Z% ~$ G$ ?& L5 ^0 c1 X
set credibility n-values people [-1]3 y* ]. m& X" s' D' d. ^# R
get-color
- y5 D6 p7 J& P! g$ E

5 R! l& g( M, r! Nend
; |" d2 p+ X# v  z. T4 h! c  c) V. y5 _
to-report creat-credibility8 A" V7 O! U$ h' N
report n-values people [0.5]. }3 j3 y+ m% n
end
1 s) U9 T* J/ ~( G8 _6 I: {. ?2 ]# U7 d2 G  |- g( d) Z
to setup-plots
1 Y" K$ v% }* m6 @! U
4 z6 Y* X* ?/ z6 gset xmax 30

( ?  B" t6 T; i* n0 H# [7 W1 l& h. I, F, q. K
set ymax 1.0
) _5 D2 s7 W! v6 [( Z! J

9 N6 [" }* O8 T, P& cclear-all-plots

: l. t8 F" K5 a6 ?) \/ y$ `+ v1 X, P
setup-plot1
: X' F% L0 X1 H2 D4 [

6 ]) g8 f7 e, A! d$ v' Qsetup-plot2
5 S) M" l( m( ^( D/ X% K) u

/ a3 |" L0 C4 @' N# v7 h. osetup-plot3
& M5 T+ y# s' T6 G0 j- h7 b
end
4 P6 V$ |0 _0 A0 C6 j/ r
( t8 [4 w" Y$ J9 `;;run time procedures
3 a) a9 j  ?8 w" v  B; Z8 P  C9 @, w# L" _/ a; L6 ^
to go
& v: h* `  v* R1 b& W
, h$ Y% l1 a: T1 O) Xask turtles [do-business]
$ F& U5 [; N& W7 K
end
9 O$ w/ E! X- g# _) M
* V4 R5 s. \' y, ?1 dto do-business / |' D3 ~$ B  p* T$ g

8 t: M/ _0 P3 y& Z
* i4 N' N9 c* a2 Urt random 360
! E1 Z9 S; H' O6 z
3 J* S( l2 k% c$ K+ D) u, z
fd 1

, _5 F" H0 I+ }6 m' r" E: Q9 h2 B8 G( v" U
ifelse(other turtles-here != nobody)[
0 h! s7 J0 V4 c1 }0 [/ Y3 k3 l
) v" L( k8 f9 e! h
set customer one-of other turtles-here

& C% W0 L* i3 x7 j* C
3 F. _& Z2 M6 K) E- a# e, Z;; set [customer] of customer myself
& L: l% R4 E$ @$ U3 n3 z/ H
  u! n  o/ O+ {& b) l$ C2 s
set [trade-record-one] of self item (([who] of customer) - 1)
1 i- S9 Z# m: Z% [2 L[trade-record-all]of self
* h% e8 Y, g0 U( n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) e. a  ]0 l% n, H
0 M2 r$ K- Q  C/ b3 h" d* N
set [trade-record-one] of customer item (([who] of self) - 1)+ D6 l3 k' W# H( H
[trade-record-all]of customer

" W- C2 D4 M5 P& N! Z/ ^+ m% [
; u+ y* G3 `2 Z' z1 bset [trade-record-one-len] of self length [trade-record-one] of self
9 z8 o3 x8 L9 b8 K

* W7 K3 E8 _2 S2 \. t- |; x0 l  Vset trade-record-current( list (timer) (random money-upper-limit))

" l' s' S) i5 C2 A) e; V, ~, |! q* [' x) I* M! a: y
ask self [do-trust]1 I+ y( s$ S& O
;;
先求ij的信任度
3 S# G) F- H! B9 ]( w( h0 |4 ]7 y9 H! F8 i' o
if ([trust-ok] of self)
. ~; m$ N! n3 u+ v0 w8 q;;
根据ij的信任度来决定是否与j进行交易[- w, @/ P5 c- k% h- X% I/ F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: B% _7 C/ z, ~4 c0 K- F6 B- j% l
* c7 k7 s- G+ \& P) k& f, n! n
[
, m* w. _* h5 A/ \- B
8 D2 Y# N, Q% K0 E8 F
do-trade

9 m* x6 Y6 O9 n: T/ z, a
6 G6 t; |$ i/ t  w6 V' i% w9 z: k  s5 qupdate-credibility-ijl

& I! I2 i! a6 t  i+ @; F1 c! [9 i" n+ D1 @0 z2 ^& e
update-credibility-list
8 W# ~& w3 K& g4 j& q& _

* j- c6 ^' @2 B  K- a6 t( v' D9 m/ z# J7 [
update-global-reputation-list

6 S2 c4 n7 w. H( v  c
( a+ l, }6 d7 L9 y) r1 n7 ipoll-class
$ _5 p- @. \8 q* @! S
3 t! ]9 m6 y1 V! E2 Z
get-color
0 F; i1 |. o: F! w6 X

6 S  s3 h7 V; g  u1 _]]0 H6 B3 Z7 w8 B6 f! C: {
8 c! @. S: b9 v+ l+ A0 H6 m. {0 a
;;
如果所得的信任度满足条件,则进行交易
( J1 x5 o) U1 B3 H0 [& X' Q: D% U7 |- d( P+ @. m' ?8 U
[

! P1 Y4 S& y" y3 @# V+ }
7 `$ M' ~* }! B1 l! U6 V. d# Frt random 360

* v4 h+ h1 q8 e0 x5 h6 ~5 s2 T& _9 K" S- n  O
fd 1
$ _5 k  T. t8 D5 i' _
, b9 T8 N6 N5 C! c4 W7 I
]

5 d( Z& o# |: c  `8 r4 @4 N- o: Q
end
1 L; o( w9 b, J+ p8 M

' ?' c) B5 Q' i& d. _$ X1 \6 fto do-trust $ m, p7 y6 }1 X! F4 S
set trust-ok False
, h  T% l1 d% N6 a4 h. c7 k2 o. p7 Y3 |/ t/ }. }# ^$ N. H
. L# S# O, ?; ?! c! Y
let max-trade-times 0
$ l. b0 L4 N- Q! W/ bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* c5 c7 f5 N+ b6 r& s) g  _$ ?0 _* hlet max-trade-money 0$ S$ K" c4 g3 u$ F( K
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& p5 s: ]8 N- W2 x* z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" r- |8 G( F2 Z6 ?5 o, Y9 j  J* X

% z  Q5 r5 A; D( z) Rget-global-proportion4 ~: g/ m1 W, ~8 {
let trust-value
6 \5 T' J1 k, ~5 d- 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 W7 K5 r* b) b) k. Y% ?if(trust-value > trade-trust-value)
9 V* m, O& t# t( P: N, x+ o' j[set trust-ok true]
5 b; c+ m* b6 `1 s1 eend
5 {+ a! W+ B% a
- e1 B! |' q, D# X$ {$ c% }) ?' @to get-global-proportion0 e3 N2 w. |: e4 l( t( r, ^2 V6 Y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 F- Y2 A  o7 H7 `[set global-proportion 0]
# j; }: H8 f6 ^[let i 0
$ G. V' c& ~" O/ f1 ]( rlet sum-money 0+ j1 L" R8 z  E" [
while[ i < people]
% J% L" a, R( B9 Z+ k0 }[
6 K7 b0 z5 I, p0 Yif( length (item i
9 H" z, H+ L) v, V8 ~$ p[trade-record-all] of customer) > 3 )

$ d- @, t# [! M2 ~1 V[: P6 g: @/ _; Q( w; E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 L1 ?$ I7 d7 T; H2 w
]
9 B9 u+ \& V  t9 v9 K8 t1 x" }]  M8 b$ h# I' A
let j 0
) T- \* F9 ?: \( @  p5 hlet note 0
5 w, w+ N6 z- {4 z; u1 \' x4 lwhile[ j < people]
, O4 b/ {% ~, s6 d# g3 B[
- J7 L, S, J- t# k/ Yif( length (item i3 f9 k& x- T+ p0 J
[trade-record-all] of customer) > 3 )
5 }' T" L4 _# G1 L" L
[
( l6 n; l0 r" s! c, r7 _, D7 cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. K5 Q8 J9 A  ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: h3 b! U0 f1 x. r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 _$ ~, R$ S0 \7 E* e
]
8 C7 i6 V4 M- K% ~]) N/ v" Y, \& e1 G4 I5 X, I
set global-proportion note
( R! C" d5 u0 ~" m; U1 \]$ P6 r$ C7 K! D' j
end/ E; Y+ x& X$ w1 g. p8 M- g

# q: L+ o" @, P  r4 X3 zto do-trade
0 _. I' S7 W  ~- ];;
这个过程实际上是给双方作出评价的过程
; N2 d3 P* B" F4 H" A% {" Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 c! K- I% k5 O% e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- P" L, u5 X7 P. J4 [1 r
set trade-record-current lput(timer) trade-record-current8 ?: z. Y/ V" t, N3 c5 |% _4 O
;;
评价时间" u( b/ P1 I% d; M
ask myself [
6 ]7 n+ q( l( d. ~! [& qupdate-local-reputation: B, w: h4 C" u4 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current
) G' Q) Q3 \' b! k2 i6 I]
% v1 w# f, }5 F) O9 n6 Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" @- o& V0 x! Y, O- E: \;;
将此次交易的记录加入到trade-record-one5 W( `$ C2 s; m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 E- F8 O7 |  h( H$ i2 G% e
let note (item 2 trade-record-current )
5 Q& |6 N) G' Z* ~- j, oset trade-record-current* m& K# U" G. |/ p6 c8 g5 Z
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 N0 X+ ^+ l+ c6 [
set trade-record-current4 Q* t, l; y; [
(replace-item 3 trade-record-current note)
8 [7 i5 }6 b/ v. G# l  Y! [4 V' c: ~& V& _: L( y1 B4 R

9 h6 r9 u; U/ `+ _% zask customer [
( J7 i& b/ h0 ~4 y( nupdate-local-reputation4 S- |! z/ ^- Q6 }2 h
set trade-record-current6 ]2 ?  O# |9 G7 T% X1 w6 m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' I( w) y" x1 k7 I% X]
$ g3 G' A+ N  r! M) W9 s+ [, D  A6 k# x1 P) d7 W2 g* _

8 g, X8 p, l! U  Jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) s4 ^4 y7 X5 u

9 ]1 G" t1 J- x/ h9 w5 Zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( ~( Y  ~- U' @6 e3 B0 r: o# p;;
将此次交易的记录加入到customertrade-record-all
/ T% X& E' G0 C8 X4 N* Dend$ ?7 O) I1 x( I
# P. c9 D& U( ~5 n9 [; Y4 |
to update-local-reputation# i& M9 m  A. g! R0 z  d
set [trade-record-one-len] of myself length [trade-record-one] of myself
% f  F7 b# c% W* J! z
& ?( i" K; c6 r  K+ x
" j! ~# l/ C+ S3 W1 K. z;;if [trade-record-one-len] of myself > 3
$ b6 e3 W/ ?5 ~3 Z
update-neighbor-total
& n( L7 S& e0 F9 Q1 {;;
更新邻居节点的数目,在此进行% V; F( R. d4 f- |& l1 f
let i 3
/ S- ~' s& O# N* R3 v6 n0 n4 e2 }let sum-time 04 k) B0 X- i+ U& L3 @3 w
while[i < [trade-record-one-len] of myself]
4 G% U) w& a7 }$ ^) p1 O! P9 Y8 \[
* @) J' u" ~! D& y# X% kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, m* v/ z$ S& pset i3 }7 P& M/ c3 y, @+ m, e6 |; E/ P$ g
( i + 1)

+ j7 H7 |" Q- j6 n: i]: [4 }8 [( E+ N+ w( `& @0 H- i6 |4 E
let j 3
0 K9 c# q! Y. x( Z1 p2 g% q( X& nlet sum-money 08 L1 W+ K+ C& \& q; f7 z1 D
while[j < [trade-record-one-len] of myself]& U  P3 ]- [* O9 G1 t! E
[4 {) n' ?  P8 D- }. C; n5 C6 I" Z# y
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)( M. q& \5 Q3 R( K7 v
set j$ `/ i5 y/ s" v$ y* l7 ^1 F' `2 }
( j + 1)

) e4 c3 i' F7 G  ^8 d2 g2 N+ {$ Z5 e]6 p3 |3 v0 A& e
let k 36 K4 J1 x2 H6 }
let power 0* R% H$ o: O; ?- `0 y! H, a" I
let local 0/ E$ M( I! u5 ^" A# H
while [k <[trade-record-one-len] of myself]
" U; R5 ~- U; D+ ^  M6 N[
+ G  l" X, M; {1 w( G7 u6 Aset 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)
% \6 S- u5 R* C! Xset k (k + 1)
8 {; y5 T/ Q6 ?/ E( i& ~; d]' b/ Z. W2 B- W1 g1 ^$ u9 t% H  I
set [local-reputation] of myself (local)
$ h. `  ^) M5 |3 Gend
# z5 ?& i% U  D9 q* O
# u. O. {% {- ?+ h. eto update-neighbor-total
% f& ?6 i& J3 r
' ]) d4 d1 ~2 T. b" Y" Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  T4 `% v! P7 I- B. W

: x, U, v! f) ?( i1 s/ N

: e: w$ k; L- S9 H1 a( i) Fend
- _+ l6 Y8 y/ V- {
+ F0 H3 {" m% E% C5 c" Fto update-credibility-ijl
( _  ^4 d% k+ E& w+ \" b" |* x" G0 Z/ Z0 S0 P3 z3 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。' m2 i3 A. M( F: q# E! l
let l 05 l6 [2 f& e0 G& Z7 H% t( W
while[ l < people ]
5 t! W1 C& f# b  N& ^, {5 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. j$ `* C, ^% x4 d' S
[7 }# K1 t0 \& b0 I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' c/ a3 p8 d* M) B$ ?9 `- A
if (trade-record-one-j-l-len > 3)
6 V# Z* k/ l% t. C  u* n. \[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; w& X+ i* q5 u0 p  }) R. j1 k
let i 3
( R$ E; _* N$ k- ], L3 hlet sum-time 0# s+ G7 i3 o3 {: M
while[i < trade-record-one-len]* e' n" B  Y/ U0 C3 o, c
[
% j! r* s3 ?5 X* l  Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ Q9 B, ^7 l) ~  i$ \. t$ qset i
7 L: K3 _7 P8 h( v( i + 1)
2 ^, X+ s7 P. M6 T+ F* p2 @1 O- V
]
. H6 i6 @9 `$ T+ Dlet credibility-i-j-l 01 d4 T4 v7 ^, P7 C* B+ {
;;i
评价(jjl的评价)
6 X/ T5 k$ d( dlet j 3
9 o4 }0 R- i0 z4 E- w  c8 _let k 42 r9 x' N' W) a9 b0 k0 d) ]
while[j < trade-record-one-len]
1 d; e& r$ E, {! Q) ~* R& m# z[, E* M" ~# `. B! p5 f) Y
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! ~7 \( O  P& J4 L* s
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)
2 P2 _1 I) b2 @set j
6 {1 n5 o; i$ \0 H" a$ v( j + 1)
$ t2 d, y/ e' y: `5 b
]
0 _8 d0 ?' b% q4 W* z/ Zset [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 ))
9 J" W$ z: D8 B3 Z6 J$ A. x' L
1 d% R, ~! ^/ N+ `' a  U; X

+ D$ |2 D2 [# W' B! c. ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 b, }3 h* Q* H! ]2 }. M7 ^;;
及时更新il的评价质量的评价
$ x. G8 W! U2 Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 X0 q( r! [% xset l (l + 1)' M' R) N! }" B. w/ T% \* M% f9 G9 L
]
/ E1 \# j7 K' qend4 J, F3 F' v# b4 }; r

% [8 [0 d, v/ S& Z5 Tto update-credibility-list1 w$ A  y! i5 G3 l
let i 00 @/ v# Z- h5 }
while[i < people]
& h* `8 p! ~$ h* {5 y[
( ]8 v3 `- D- V0 v3 A2 o5 _/ t  k% Ulet j 0
3 x& c0 L4 y* ulet note 0
; j! j! w* m% v1 plet k 0
. L) R' T8 ^/ h. g; N" _; _+ l& b% r;;
计作出过评价的邻居节点的数目5 W' \/ i& C4 s5 R5 s) o9 Q4 h1 z
while[j < people]) e# _- k) P2 \2 M0 ~
[
4 w3 {) I/ e) C8 W) mif (item j( [credibility] of turtle (i + 1)) != -1)  a. r$ s8 B* R. r0 e
;;
判断是否给本turtle的评价质量做出过评价的节点' c- K1 \, s8 X4 l; u
[set note (note + item j ([credibility]of turtle (i + 1)))
4 g: Z/ Y" E; [2 X;;*(exp (-(people - 2)))/(people - 2))]

& [, X4 B7 P/ I, a; C  o5 kset k (k + 1)( I0 y$ l0 g% a2 I2 v7 V
]9 [+ H2 M0 s8 b3 P
set j (j + 1)1 m) h% B2 y) H; N$ `
]
3 V, m' p/ C* g% e! o' k2 ~) {set note (note *(exp (- (1 / k)))/ k)2 l; k" n# Q) v0 C% ~  ]
set credibility-list (replace-item i credibility-list note)
0 `! g$ U2 H! g+ T# B) H* o+ cset i (i + 1)
% ~) b. x% X/ @3 a4 ^6 u0 W6 t]. e( J' f3 ]) e9 X1 I$ R' V
end
0 b; l4 ^8 u/ o4 Y4 j
# y6 {, g* k4 \- nto update-global-reputation-list
( \- |2 I. ?, b& u3 plet j 0; _- Z) z# J& O# C
while[j < people]
4 q  e7 X# r& u2 p[' X: t: r- Q) V3 H  f6 h
let new 04 V& H8 X+ Y5 {5 f% n3 e& F% c
;;
暂存新的一个全局声誉
% G' l3 a/ ]& ]% J/ I  {9 Elet i 0
' C( v( S9 h5 x& V* b, [; nlet sum-money 0
/ w  C1 `+ b; s" Flet credibility-money 0; R+ [) {0 |  p( x, c
while [i < people]5 v0 k* ]" G+ i% I9 D+ S, Q3 a
[: \, I! v0 @8 L- f6 F0 J, r
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& p9 s6 F. Z& I/ r6 s3 `$ Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 a! b. D$ x1 g) K2 |" Tset i (i + 1)4 H+ i8 ?5 r) F
]4 M% q% ~* z5 M# D9 q
let k 0- X# K9 I2 n: d8 `3 f) j) p- ]4 f. V
let new1 0
7 ?$ L* q6 p, ]; Hwhile [k < people]
/ y8 Z# @8 {8 |7 i# P4 p[8 `$ r3 e+ G; f9 r3 u& T1 ]
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)
! p% ^! S( r9 g+ B9 K  h$ ]9 Nset k (k + 1)
+ m  o2 K6 Z; Q. y, Z/ r) B]
. }0 ?6 r7 b: b$ b( s8 Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 |$ E, @' ]5 [% y1 w4 L# tset global-reputation-list (replace-item j global-reputation-list new)
& v( J/ k2 q. x. z4 i+ o1 Eset j (j + 1)
  `$ p/ [% c# C$ S]+ f2 K1 d$ A! p9 k4 w
end3 E- I7 f$ @, I( N7 [) E& [

( Q6 b, A  ~( c
  X$ Z# B$ n: O( t5 T( r8 b3 P' n; O7 m' c* e/ B8 c+ i
to get-color! A$ R$ o4 |' [2 s

& N: }) U- A! Tset color blue

$ a/ N4 w8 [1 b) Mend
$ m9 L- y& l/ q: X2 a0 E3 y* N5 x
, y. @. @9 w( i0 r# @: D" l8 @" _to poll-class
# O1 a+ L' f- Z1 Dend: t- |1 x+ d  p1 Q) j3 e
$ P8 d4 `+ L" z* T
to setup-plot1$ f) D) ^# V' m: B- ]) I1 y
' A2 d2 u2 d5 E
set-current-plot "Trends-of-Local-reputation"

" R3 ^3 C: u* \8 b. [. g/ j  n5 K6 B
set-plot-x-range 0 xmax
! j  o1 G& t. I
% D# `% j) C2 i1 [9 C3 Z/ F4 z
set-plot-y-range 0.0 ymax

1 A" Z1 r, k! e. _end8 r$ P0 x, W7 {7 N) H) u
# y$ L/ u" Y$ m! t; F, D# Y
to setup-plot24 r: p" z" R9 A; [( n; t0 C
# s# h$ Z# h4 Y0 d% p
set-current-plot "Trends-of-global-reputation"
- {! e) o2 X+ |6 w/ v7 a
. p8 [6 k: ?+ z
set-plot-x-range 0 xmax

2 \0 B4 I' z5 ~0 m) c0 @& V9 B# B
set-plot-y-range 0.0 ymax

5 a- d% z" n  J2 d8 C9 `end6 U; r/ f& ~3 u

' }; c$ Z( r6 tto setup-plot3# O. D# V# R  T
& t; }7 Z5 ~$ K. \
set-current-plot "Trends-of-credibility"
% c8 k) e0 |6 Y0 N" X

# r. X# K% t# ]% T8 R; Iset-plot-x-range 0 xmax

0 O8 D: B: F8 Z" G( S, S" S8 u& U) b1 k8 L
set-plot-y-range 0.0 ymax

; b' T* o- v3 t$ S- Cend9 A& k$ R- _: J% C. @
  w+ W- m  V, N' {9 U: p" z
to do-plots
$ d) ~5 _% g( Q7 H# e2 m$ s: Bset-current-plot "Trends-of-Local-reputation"+ i* E: V9 w" E+ J$ ~9 ~2 H# J
set-current-plot-pen "Honest service"
; K3 z! V$ s+ m. t! r4 _7 Eend) m5 R& h4 C; e0 G# n! C

$ z9 V* @$ z$ n" i6 T* r( 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.
2 L, b8 l* I& @) H+ b. g7 o9 R) h+ W0 C2 Q$ w( R. ^5 l( O" ]9 s. E
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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