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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:
2 C# e, N& n# ?1 i7 _$ `to do-business
+ n: B$ E3 Y2 p4 o3 N' Q rt random 360( H8 d( F8 p9 Z7 |2 o5 W% i$ K
fd 1( J3 D2 G6 K: \. Y0 j
ifelse(other turtles-here != nobody)[
2 ?8 `5 ^3 I; O$ a  Q: V9 `   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.+ z7 S# g. T# d& G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 e$ ~5 b8 [  S' M% x) v) B! `7 J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ s2 X3 L( Z6 d
   set [trade-record-one-len] of self length [trade-record-one] of self
# J, ^2 Q- u* n* P7 r$ L! b   set trade-record-current( list (timer) (random money-upper-limit))" ?9 ^0 @- I% X. p, [! W' A

9 @" l4 f! m& K7 A3 Y. [问题的提示如下:) L. ~! A+ r0 Y9 o; s) E
8 [+ ?7 ?. m  L$ L" ?: T; i, d
error while turtle 50 running OF in procedure DO-BUSINESS
: r$ \! W1 ?) u3 O- U" ?$ V  called by procedure GO& ^& ^! H, R+ Z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 r5 {! K0 Q7 Q% w  N  z
(halted running of go)2 o+ f; }$ ^# E$ x& }& D3 J  @

) p+ O- c" G; `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~~/ W, L0 U9 T$ v5 q+ S& k0 b
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
# _- p% I( F6 A1 g! _+ {6 Tglobals[
0 i6 ?& I+ {+ O3 W& {) Pxmax
0 S7 b$ m% L% G, s0 N1 F; mymax
3 f0 l2 H+ B( eglobal-reputation-list
2 x. p$ c# O  W1 x' j( c2 }( [1 V! [
;;
每一个turtle的全局声誉都存在此LIST2 ]: ]8 m; h: @4 @% A
credibility-list
' E1 l# ?7 J. {2 I. E% M4 I;;
每一个turtle的评价可信度3 v" t1 m5 Q+ h
honest-service/ Y( b- b7 i$ J: a0 F
unhonest-service4 n( J% N" u- A2 N  [/ G
oscillation9 r  N/ E4 m, B0 ~+ h1 M
rand-dynamic
6 t- s  Z2 E5 v9 |. s]
$ j  q( t( f: h- H+ |2 I. c1 l& i8 f
turtles-own[- J# n, z) C8 n
trade-record-all
$ y# M7 B4 r! A1 r/ |& ~;;a list of lists,
trade-record-one组成9 ]5 r+ A% D$ O! M6 O
trade-record-one
4 z3 C: h; X4 S( p7 g) p% [. k;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( R* `+ S* \' C2 L& S

5 ?2 f. `- F' z) [;;[
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]]
9 _! g8 ~) k. o5 dtrade-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]
+ c) a  [2 G, q% wcredibility-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list6 E5 I4 e4 h& T* F
neighbor-total
0 y) F" Q1 z. s8 V! A: @- u# j5 a2 ~;;
记录该turtle的邻居节点的数目
/ @  y" t$ e4 t7 j0 b+ Htrade-time7 ]$ v. c& K% ?: N6 ]9 }
;;
当前发生交易的turtle的交易时间8 I  f3 y6 M2 E3 @
appraise-give; ~9 ]$ I1 }0 M1 f, F* G7 u- ~1 P
;;
当前发生交易时给出的评价  e6 ]: j. ?% q! I; g
appraise-receive+ ]* ~. S7 D7 f: ?" [& I2 H4 I
;;
当前发生交易时收到的评价
1 I* G6 U7 D1 [# x' mappraise-time
1 p5 @  Z" ~9 H+ @( i, V9 d' d;;
当前发生交易时的评价时间# v- ?5 t, l. |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: A: e' n, O7 t* X8 f' F4 a8 p( e# Q) ]trade-times-total
; Z* V: w5 a$ K# o. W;;
与当前turtle的交易总次数5 A6 h; k! v0 A
trade-money-total
% d- n4 T/ u5 V% u* y7 w;;
与当前turtle的交易总金额
0 l6 o& f2 \6 T4 Llocal-reputation% C. f) @3 @; g& Y
global-reputation) v  t5 W/ l% T8 d$ J
credibility
* q  @0 l% U" v; w0 Q;;
评价可信度,每次交易后都需要更新# O0 l9 L. p  s" P# ~% h, H
credibility-all
; L5 Q9 `9 z, }1 D, {  X0 ]5 _;;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2 b  ]1 S' f4 l/ r
  J7 i" w2 v0 G5 S
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5& X0 q4 W4 x$ f: V0 n4 X
credibility-one( M  |7 M% X! c6 E1 y6 m: E
;;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
4 h# r9 {! F# F) K. L2 H/ _  {- v# jglobal-proportion
( [7 B2 Q; m. K/ mcustomer
% y  E! _0 X8 ]* ucustomer-no- ?5 R% u6 D4 [2 i3 b- ]* n' l, J8 p* u2 I
trust-ok; j# J' O: P, G9 \1 ]: ?
trade-record-one-len;;trade-record-one的长度+ m# i9 A: M% {
]
3 a& e2 P% _7 B" U! o% L
, w" r+ Q3 n7 N. N;;setup procedure
' t0 H6 [3 h# x. Y( C5 R9 t/ c/ g; G$ a* N* x
to setup
$ `  [* R, _9 F7 Y- \. j- H8 J* }6 V
ca

2 f0 T7 _$ ]) m& q
2 z! U$ D; U$ Vinitialize-settings

0 z: b9 l8 d, [6 O: b
! `8 I: P4 z5 M" L/ `crt people [setup-turtles]

6 Q7 R: g9 h' q0 v) R, I) K
* C- a. q( @4 J, k' B% w& c; Ireset-timer

$ i7 s5 s0 `/ u
& `9 I4 i: O! Qpoll-class

1 n6 @3 a" z8 m9 ~8 [3 M
) ~. q: d3 z" p. Ssetup-plots
: C' k0 e- q/ [% A' P

, g4 N$ E+ s" u2 Z# Z9 N% k. g- x( Jdo-plots
- G, t  ?8 b( ~0 S& p# O
end
% ?$ m$ N# s- p' ]) C$ ^  t3 Y0 `1 v+ k
to initialize-settings% y1 h; }2 j/ V' T) |9 ]
' ^1 H6 a- Y; r6 q. E7 f, O' p
set global-reputation-list []

8 \; P* r! k+ i( s+ X7 n$ o6 e3 g: ]: z/ ~& B) U4 Y) N
set credibility-list n-values people [0.5]

' m5 ?* y( Q9 B
& n/ f9 A4 a4 {, ~' Zset honest-service 0
0 Q# C$ V& r! o+ o& {9 g

" K0 t. S5 e  I/ {$ |+ M" sset unhonest-service 0

: u+ G. W/ X8 m/ R, p4 b$ o7 H9 d: i1 @
set oscillation 0
$ N$ H3 F' O! x9 C

5 g4 p1 ]" C' t1 i6 S. L/ c/ T+ mset rand-dynamic 0
( l0 M/ p8 K$ i- x3 Y" F  c
end
3 V6 R' j! y. A' v
  R; u7 X; a0 G! d5 m% ^to setup-turtles 9 p% R; Z9 ?6 F7 g
set shape "person"& i8 ~* i# e  q' B' E
setxy random-xcor random-ycor. A" _. ~' s) f4 U# J6 r/ j
set trade-record-one []
- o# b, l% t+ b/ ~4 A4 Z! r
6 |- D  g9 g. B) j
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 f% z, Y3 g+ ~! G6 W% l( u( v; t  `. t
2 ~* t+ ]* s0 q1 h& I9 ~" V8 C
set trade-record-current []$ }$ E1 i5 d$ i' _
set credibility-receive []
9 R3 C$ h* c3 \+ s+ e8 ]set local-reputation 0.5
/ V9 s( t9 j2 b, Fset neighbor-total 08 V) C- {# a8 u+ c) M
set trade-times-total 0
9 u7 [# s9 ?8 P9 Bset trade-money-total 0
. j# C# G8 z# w5 _4 Xset customer nobody
$ D" |! ^7 v4 l" P/ y# z7 eset credibility-all n-values people [creat-credibility]8 D/ m3 h7 p; S- n
set credibility n-values people [-1]9 F9 j. c8 K0 L5 Q! X( x
get-color
- k  z/ ^- o9 n

" u9 q1 s3 R) g) Pend
9 x" E3 s1 Y. A# J6 a( E3 M; I
; T0 u5 I- x* T# fto-report creat-credibility, g) X% Z/ e/ D9 U0 Y4 E
report n-values people [0.5]
7 s& W$ T. R/ f% d# M0 s1 [0 }end
3 |) e  O) _( b: O2 X" w, Y1 G! j8 F( _" n9 h* l1 p# C
to setup-plots
4 h- O; Y) F/ ?7 }& O/ M- }- I, R1 P% }. V$ ]# u) \
set xmax 30

1 N; A2 b3 O3 J# r% \' c
4 k6 f) Z" Y( m# d" Qset ymax 1.0
1 b+ r6 H- ~) h2 n5 i
9 K! y, r1 V8 @: @) n. v9 N
clear-all-plots

/ ]% Q  n, \! l8 N7 G+ o
0 g( h, m$ o; F9 [1 s' J0 L1 Isetup-plot1

: E8 l' V+ D9 h3 n6 d6 S6 t7 c( Q$ K$ W7 X% z  W, P
setup-plot2

! q2 [1 `4 v4 q0 Y
$ e8 Z$ B5 Z) Ysetup-plot3

! R" _8 [) x: o: I' {% ?3 Dend
3 v5 U$ P% _( i& b" i. T6 U5 i. e
. Y. o8 ~! X4 I% I! i. l5 _4 _;;run time procedures' ~. U# c3 i0 H
- k* J7 @6 {8 b) h
to go5 g- X- v" c4 s0 h2 L; c
" H1 u+ p( @6 u- q& U+ A' B* P, q
ask turtles [do-business]

/ }, A5 s* y, z+ l- y9 P# xend
& X2 e0 h0 m* J+ I9 Y' m" X! G; Q3 o1 d8 l4 t4 K
to do-business
# r4 B4 B1 X) I! \8 h1 y, ~  C
! W9 e8 Q) q# o) t! O9 Z" W
' o8 h3 E5 q; z. d1 v
rt random 360

# h, X2 v# ]. d, ?/ k+ D3 Y8 l$ P, y3 q/ G6 _) m/ w4 o
fd 1

7 _3 [" h7 v, e4 m: N  |
8 I% P" H# H# pifelse(other turtles-here != nobody)[

6 O; D6 t5 e+ T4 m4 b% P7 p" f
0 t. _) o6 j1 m5 |3 S7 kset customer one-of other turtles-here
1 u4 u" u! ^  ]- `
4 T8 j6 l  b& r9 |: b9 w2 P% h
;; set [customer] of customer myself

- V3 R- A- c/ M! J% A+ A- O) U* r- O5 u: j. p
set [trade-record-one] of self item (([who] of customer) - 1)" z$ |5 U- r; R1 B8 `' y4 S
[trade-record-all]of self4 b5 _! k$ o* h! T0 x" }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) ?8 u& |7 s6 k, b/ K3 L4 Y5 h$ F( R6 ~
set [trade-record-one] of customer item (([who] of self) - 1)* _+ l5 C# q' v0 e- j9 X; V
[trade-record-all]of customer
+ ~: s, r' W' Q, j! S9 F+ {5 p- }
9 e- X& `6 z4 B) c' h; Z% E9 {
set [trade-record-one-len] of self length [trade-record-one] of self

. a2 f; ^; v! ^7 I& @2 C( e+ O# Y8 y& H  U' z" p2 o2 m' s* b! N: g, T
set trade-record-current( list (timer) (random money-upper-limit))
* Y* W" {* k# S! I) E/ _

6 O* m3 m3 j8 Y6 H2 dask self [do-trust]  K7 W- W; `) M$ n8 b+ P
;;
先求ij的信任度1 D5 S3 `" i8 h3 n5 v) G& e8 g- w6 z
/ u# h1 C+ D0 D1 X: f4 l
if ([trust-ok] of self)
  z1 C) J: B. q$ [0 u4 j+ P% z;;
根据ij的信任度来决定是否与j进行交易[  p8 Z6 m6 L* z% d
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( E; f7 x9 S" F- T$ p; [

* d' R- V( i7 W3 k% D9 q. P[
2 U8 H3 p: L' j! d5 i

4 `1 ?1 G; c' @* @. G0 E0 ~- Edo-trade
3 P" A& l# h9 |" X( R8 c6 G0 _
1 C3 Q# K1 s! b* k1 r
update-credibility-ijl

( `5 H0 ?1 ~1 F0 y
/ O6 C; M# G/ bupdate-credibility-list
8 T' e/ ~! v' z9 K2 ]0 L5 v
; I3 Q- U( P! G% D0 J, W( L6 C7 A
1 |/ Q9 D4 a0 f! D, x
update-global-reputation-list

1 h( C* r& t: N
9 m' d4 m8 u& k( }5 X. r* v- @; y% G; Dpoll-class
4 \3 M, c* w2 h) ]$ u
9 I3 _! n. y8 K$ b
get-color

+ S6 D& M1 J+ Y: T5 Z. C6 p1 I. B0 a6 s6 m& y
]]
) I2 H: f& i9 V: f6 `4 [
8 H; C3 f4 F6 J/ @9 n+ a7 d' C;;
如果所得的信任度满足条件,则进行交易6 o% b6 n* k% z0 F5 V0 x/ F1 R
1 v4 h: l3 `$ w4 S
[
7 S! a$ @6 H6 `

" _6 R) `) |, \* {# F2 q, G; m+ _rt random 360
1 M# N' k1 c% c# |3 s0 U/ G; J9 O% r) }
- j2 ^. q1 C: \9 J' M& v
fd 1

2 E2 ?( W% G& V& Q- z
2 w% L- g2 o; h3 C& B( b]

' t5 y3 p. [( a4 H
( b( W( u' ?) m" X1 `end
! z; \- K/ H, c1 q) A# w
. h/ p4 o9 D: ^8 t2 p
to do-trust 0 z" v3 H% L  ?; }
set trust-ok False! h! R$ J( {3 N% R! a1 I- q

/ o/ J7 ~* t) w
1 I/ T3 r( a- u- x" d1 p
let max-trade-times 0
% z+ @% m# R. f( B$ xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 u, |7 r* n  e+ t$ l( o
let max-trade-money 04 {4 [1 y$ ^: ~3 T) \
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) ~6 L& r& X; K  o+ w+ h% V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! b# B: n' E2 J
* w! {) Y, O9 G
* K" M/ O  J/ p, i6 n  i6 b4 a+ q
get-global-proportion# C1 T2 B# Y6 l) @
let trust-value" @: l6 f9 p, D# [) i  T2 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)
7 c; E% J+ k! e4 O9 }- @
if(trust-value > trade-trust-value)
  H; F8 i" R* P5 O[set trust-ok true]
* y! o/ t! u& v- |3 y% O& Mend
# j: W! B$ y( C2 v
0 L# `: A% p1 _7 X1 j4 Dto get-global-proportion9 j/ d4 ~. Z* p5 l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ p% v4 F( V+ k; h0 Y
[set global-proportion 0]
2 _& g) E0 |' f( c/ P8 {. L* b: ][let i 0
3 a; R8 N; s2 vlet sum-money 0
& Z/ c: v; {  S1 v2 X- c% c" e% mwhile[ i < people]
4 P4 k2 M' ^# b2 N  u5 ^! E0 {[
0 `0 H- Z7 q8 _5 o1 C9 w. y- Z9 `+ [if( length (item i% p2 `& d' T4 n9 Y4 M3 |
[trade-record-all] of customer) > 3 )
5 h! _. L. i# ^2 M( C7 }, F5 Q3 }
[3 E! Z" a7 Z8 M8 ~7 ~$ `7 a' I
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 ^- g; d) \6 T+ W/ V8 u9 g. E]- T" c& M. x5 v4 E' e* D6 f+ X/ f
]# v7 D4 I1 D5 }6 f  e: r! W
let j 0
5 A9 M3 J9 @& u: v' L4 H( ?let note 0/ @9 W# ~' z1 _( S  t6 C
while[ j < people]4 j* _% n& s* R7 M. K* H! h
[# Y/ d* m% ^8 D# A9 ]
if( length (item i" z) t* f( U7 e3 v1 v) v
[trade-record-all] of customer) > 3 )
$ Q* f9 j$ Y5 H5 K- \: ^; X( p1 {
[
; n( s$ P) u" z9 Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' A" q. L; X$ c& G  R, Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& E3 z& T" O* C' l0 d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ R4 X8 }6 H# x7 y, [1 _
]" o: E) I. N- J
]
1 m9 l0 X) \( F/ _$ q2 |6 l" K; yset global-proportion note1 |4 [( J% D: u; B3 Q6 {
]
! H, Q! {# q2 E; v( oend7 O2 E" R: d5 ]* Z/ B' ?% E, r; D

9 V" F- A, S$ \( {4 D" M' n7 Fto do-trade6 c2 @/ c3 ~. z* p  @  q
;;
这个过程实际上是给双方作出评价的过程
6 W$ E% ~- ~! v! u% \2 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( q  o+ c& T4 d/ ^' E3 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) U( X  r5 h1 w+ ~% i! A2 |9 m
set trade-record-current lput(timer) trade-record-current
* e' P. b8 g8 A& l4 A;;
评价时间
7 ?5 C' |$ x) k9 q2 Sask myself [3 J& T' L. Z: f" O0 |, Z! B6 [- ]" M
update-local-reputation
1 Y( M2 F$ B' m' W  @set trade-record-current lput([local-reputation] of myself) trade-record-current) J5 n* D. v0 {& z0 x: x6 o
]% u9 e" G* k1 v" \6 q( L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 s) P# _3 f. V! v;;
将此次交易的记录加入到trade-record-one# t2 G" S6 b8 C- |& {% x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ r, B% d# e# i* I9 l& d( u; j
let note (item 2 trade-record-current )! i& [: D) d& U
set trade-record-current' s& X/ Z* n! {  V6 k; r
(replace-item 2 trade-record-current (item 3 trade-record-current))

# H4 H! y/ f7 b2 N! L; ]$ {1 Z: {set trade-record-current) ~, E, U$ W  o% o' K# o8 W3 `
(replace-item 3 trade-record-current note)
6 L" u( p  N( D! g( I" A# d" Y& f# Z8 l* r$ w5 a4 v: q

4 _) e& R( h  a5 `# X2 Z  O6 d/ rask customer [
) F  X* a3 `& J" N$ A# y0 Xupdate-local-reputation
% Y( `( h: }! j' U; k8 v' x$ i& aset trade-record-current
5 ^% K7 {1 @, a7 O+ P5 B/ [3 o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# [) m! X# y' N3 F, S# F
]
9 Q& u5 Z  V1 |1 b) b4 x1 a, ?% S4 c6 i8 [

! e3 @& v' n2 i. Aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 e+ D5 P' F# E

% F( v# x. U( M+ k' C6 Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 y- z8 p6 p# i* s6 z;;
将此次交易的记录加入到customertrade-record-all
6 l) s$ n8 t7 kend
! }! P; U: {0 z' w2 u! e/ Q& o5 ~1 a* K& n+ E3 Z: U2 M
to update-local-reputation" J; B' B% }, ~% J
set [trade-record-one-len] of myself length [trade-record-one] of myself
: P0 s8 c9 K+ g
8 ?$ x$ K) R2 j" u, W* Q' o, U( |" n
;;if [trade-record-one-len] of myself > 3

" L' C$ ~  j% F: P3 f4 _  bupdate-neighbor-total0 I, ]  d$ c, o
;;
更新邻居节点的数目,在此进行
+ V+ w1 g5 l5 |0 _# b" E9 t( j( plet i 3
- l" Y6 F+ }9 a4 [" Plet sum-time 0
/ H5 {' P1 W5 {# a" P' @while[i < [trade-record-one-len] of myself]
) O2 q$ ^" o1 C6 D[
/ T% G2 h2 ^5 x  x  _) P% ~% Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, x9 Z4 e8 [, k1 Lset i
& J$ M1 u: B( }" b1 B( i + 1)
5 u; \! G9 G: Y
]
6 K" P3 h; l$ J% C( K2 u. S# Nlet j 3' R8 w% L4 h8 N/ B9 H2 ^" C7 Y; d
let sum-money 0
5 e  U6 t" U( M9 z7 }) q* I4 Swhile[j < [trade-record-one-len] of myself]1 t! D2 W) Y( l1 Y6 C0 l: q* o. ~
[' X, a+ w9 Y1 t, k0 s/ a# b
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)
; W) T& H3 p2 y" i6 @& rset j
. T- g0 S- [8 F1 F- o, H8 X$ T" k( j + 1)
* u9 [$ ?' x& }+ u
]/ s& F* c# H" B1 R5 j8 g
let k 31 i: m$ Y6 o/ V3 g" n) \
let power 0% x" ^& K! o, h! @! w! K
let local 0
, d: x+ @) p4 Qwhile [k <[trade-record-one-len] of myself]
" x: Q  s3 C4 e6 @4 ?[
4 u0 y# X2 |: ?/ Gset 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 u# i8 o5 i' a. R7 s. x5 v
set k (k + 1)$ v5 L0 j7 v& @: G" k! i
]" D9 \% d$ N' P+ h+ |7 O6 k
set [local-reputation] of myself (local)
; u" P0 }3 e! k6 ~. M! I1 X. Jend
! b3 S- m4 @! s& M& t( G
/ _; t! K" J: C: I+ R5 z" }) t7 Y. tto update-neighbor-total0 L, }/ P1 T# b1 m; I: Z

% ]8 s# S( v+ a& e1 rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 R8 Z: k# T$ t) K
3 _" n# W( _/ h
/ V! v! {  P% [8 u: V% [7 ^+ W
end
4 D6 W' G9 F9 I/ t+ q( C2 K
0 C9 Z6 |$ [4 ?0 B0 |2 `to update-credibility-ijl
/ ~, @9 E9 d5 D0 v( O# q3 Y! O
) t0 T, ]) l: @2 {2 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。" ~$ L& C2 G, b- U2 W
let l 0
. N) D$ U& q, y5 X4 z% hwhile[ l < people ]1 J( G$ @# q2 k0 _9 |, f% t
;;
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" s  Z1 m$ j0 |* \
[0 j/ X; O. |/ g" C# O8 N  E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! y8 i" a& p7 N/ s- xif (trade-record-one-j-l-len > 3)5 T$ g+ K' `3 R) f3 m
[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+ q* Y/ @8 `/ s4 w6 _let i 35 S) P) R* ]( K4 l7 K$ P1 U7 W
let sum-time 0" h" _# d& M$ f4 K" V' ]- j
while[i < trade-record-one-len]; {2 P; r' ?/ j% n$ @
[! r; H  K% g6 o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* F! k. }$ v) o1 wset i. z! i: K0 E+ k5 t4 t& w
( i + 1)

* d3 ^  I+ ?" Y/ S$ M: E* y1 u7 k]" U/ s, c1 |  q5 \: d* v, e
let credibility-i-j-l 0
4 x" B: b  U2 E( ~  ~( b' K;;i
评价(jjl的评价)- f/ k! w8 w2 K/ k, K& t8 R1 _
let j 3. G. Q$ J* D0 g. w
let k 4% Z0 e, q+ b6 T% o
while[j < trade-record-one-len]
3 q" d( U/ c9 ~: ^8 @! I6 F; p[: Z8 ~3 q- f  u+ w
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6 f. W7 A% Z5 R$ L
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)  H2 V3 K, \+ u( P3 D' t$ n$ M
set j/ h! C$ V; k& G" W: _) g
( j + 1)

: B/ F; T: n$ U$ `/ X# p' `]4 r+ S/ g& J% [' M5 u9 O) K
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 ))
1 T! u& G& m% S/ k1 C
; ~  o; `! \6 e4 y
4 C/ o) Y# u; O  z) ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, H9 Y1 S8 A( G$ u, q0 X  Z;;
及时更新il的评价质量的评价' S( y% l  w# Z" Q& H" b  v4 P
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 U7 l, y4 g+ J) @' S& p% X: G
set l (l + 1)
5 T- P; j. A6 @7 u]
$ _% ]0 [# c3 {- x' [end8 E$ W0 w- w; _8 p' l! j! p
' ]% |7 I  L1 A3 _
to update-credibility-list1 S' @& Z1 I5 S- A2 M' n
let i 0; H4 S: A) i! p( S( \
while[i < people]1 w" a- }( o2 N( \1 \
[
3 D4 _1 v" |- Mlet j 0
5 Q! `9 g7 y0 o7 e+ ^let note 0+ S5 f# C  l; O* X
let k 0
9 M/ L( Y' ^. g;;
计作出过评价的邻居节点的数目
' f3 L# M0 N4 H# T- D4 @while[j < people]
/ n5 @$ B* ?8 J: O( \  G[
' s" K7 |' J" fif (item j( [credibility] of turtle (i + 1)) != -1)
9 z, k; k/ q. P; D6 b; R0 s, f;;
判断是否给本turtle的评价质量做出过评价的节点
5 g: A5 z9 J! k# |0 Z[set note (note + item j ([credibility]of turtle (i + 1))); t; K! {$ t2 j/ C& w" k
;;*(exp (-(people - 2)))/(people - 2))]

$ n# A+ C1 n! h" d( ]( O3 gset k (k + 1)
6 N$ V) ]' B/ S% _3 W( \3 W]
9 B9 ]  ^2 t) s3 S( e2 b+ V- lset j (j + 1)
4 x) Y9 Q; ?; P* j) w6 w+ ^+ p]
; b% d7 g. m+ j+ A: m+ Pset note (note *(exp (- (1 / k)))/ k)# Z- O+ h4 x2 R" J
set credibility-list (replace-item i credibility-list note)# W" ]1 ^! m2 k5 n( ]3 _* ]
set i (i + 1)
3 A* q& ^6 d! j, g3 T5 o! ^; A! o& W3 J( e0 w]
/ y; i, l, j8 R- jend  l" |+ Q+ n* O; I- e
, k# _* O: x; X  d6 k
to update-global-reputation-list( A* z! M2 b/ Z" B$ z
let j 0
$ g2 Z* J& W3 V  _5 p" jwhile[j < people]8 \4 P- \/ r7 X7 x% ]9 G: n
[& W0 m5 C" [3 y" e
let new 0) E7 R. w+ l) N) m
;;
暂存新的一个全局声誉* P6 _( r; A# u( x2 I% B
let i 00 H6 G  Y4 D) K8 P& F+ |! x6 }- T
let sum-money 0
& H; s' J9 a  Z7 k% n& C9 n, e! Mlet credibility-money 0: n; E. A& Y& r7 `
while [i < people]$ _+ Z# i# ?9 ]# J/ Y4 g! |
[
5 j3 o5 w5 r; @2 V4 W3 zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 c. e$ y$ `* fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& \$ ^- y- }+ u0 cset i (i + 1)
" A2 {' G' T8 N9 L3 o; `* D1 {]
, V4 T4 e- C; \7 Jlet k 0
  P2 ^0 D, F+ c* P: k/ Xlet new1 0
5 |# B5 @; v9 g' r2 k0 m' w+ h: K* Ywhile [k < people]
5 [: e& x' @6 Y- n9 r% A1 C% J[/ p6 {& p+ _; {1 H
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)
  g+ K9 a3 k, f/ }9 Q2 a! k4 [set k (k + 1)
! H4 G! Y" U" u  l; ]- h]( `: O4 P0 U2 M$ |8 I3 Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; M) A  ]  M8 V& z9 @/ I( o  jset global-reputation-list (replace-item j global-reputation-list new)8 ~: Q. z! R* P8 `0 `9 H
set j (j + 1)
; s$ K- Y# x8 Y7 G]
& K( |6 Z9 o* Q7 s/ O; o7 y8 O# lend
% X) G: S- A6 X/ d6 ^# V9 t* h/ M  g+ \' Q8 d5 K. j

! A9 e9 b" a( {) j! y& }" h' U6 G+ n4 b* B7 x
to get-color
! n3 a# G! h9 ]% `
. S8 q, V! H6 p9 {: t8 Aset color blue

/ c; R) r% F" E1 W! Eend
, Q& g# d2 A9 R' l' z
9 w3 ]: ]/ Z4 V% \3 h: W4 r) zto poll-class$ ^: t; x7 p' v' b0 P2 F, m+ B
end' S( ?" @+ A+ c: \3 Q3 f

) c% L1 I5 Q3 h/ y" P5 S" h, Zto setup-plot1
" q& `1 [# C1 i  E- k7 C
; G0 J$ W& J. l1 A5 Hset-current-plot "Trends-of-Local-reputation"
: a" e; c$ U) h5 |* s# W
) A" g1 c7 `- J& ?8 T1 @
set-plot-x-range 0 xmax
) F% C, l  u5 n+ ?8 s" C
& w( A  H3 w2 }" r: x9 `
set-plot-y-range 0.0 ymax

3 n+ i1 ^/ w4 L7 x$ a6 [0 aend
5 R$ U  \) K& p7 J& X$ L. x3 O$ E$ X7 \) l! @! e5 [
to setup-plot2
! v6 f4 I, @8 a: M, n2 ]; l. `, H: a) d+ d
set-current-plot "Trends-of-global-reputation"

+ i+ z0 [* ]; `
8 r" i8 p1 ^5 C9 m# Sset-plot-x-range 0 xmax

1 n4 A6 r9 F4 K  ]+ M6 {
6 @9 B4 `) B3 o6 Gset-plot-y-range 0.0 ymax
/ Y( b- D* H  S( ^4 d
end
3 f0 o4 s+ Z1 ]9 ]' L' v
3 r. d# t' z; s' m- [; {5 rto setup-plot3: f  E' v1 f% O& |0 t1 h# H) s

5 R8 V/ w. |, x9 [set-current-plot "Trends-of-credibility"
: _9 o9 U' W5 ~  F( M( h6 _

3 f8 `5 s- o- d8 {' Oset-plot-x-range 0 xmax

2 j8 S9 J4 Z2 x8 [: o
; X  W2 J. F: x! Dset-plot-y-range 0.0 ymax

2 x" o! n6 f% X7 xend
8 D+ i3 T9 ~8 l2 i; c* h8 t0 r- i$ b! ]0 P9 f2 ?2 Z& Z$ d9 d( x' n
to do-plots
6 o* S1 ^7 l* q9 n  mset-current-plot "Trends-of-Local-reputation"# l' v7 d, f8 h) X  P. R' z
set-current-plot-pen "Honest service"
8 l6 a. a4 C: b8 ^end$ M; I: C4 \) Z7 h/ g7 u% r1 P
0 n, G9 k; ~. O  V+ v( r
[ 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.* e9 o$ Q, k2 @, \4 o7 q7 q8 ]( K

3 M/ [3 y5 I  }1 W/ g3 q1 K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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