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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:, A2 |. q) \; w! Z  j- i
to do-business & I+ d/ I3 s5 |% P5 @5 L
rt random 3606 K) i( h0 o) W6 b  d
fd 1
5 S5 \# c# ?% a& n9 C6 P4 I" Q) ^ ifelse(other turtles-here != nobody)[* b  C" w! y7 z& [
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.3 F: D, y6 ^0 d7 j! e9 d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 L$ p# v; y6 x, |6 J) h- U* ]1 H3 x
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; [1 q+ N/ D; u3 W   set [trade-record-one-len] of self length [trade-record-one] of self1 A# x2 i( l9 @4 m  M! Q
   set trade-record-current( list (timer) (random money-upper-limit))% s8 n; O/ x+ O' Z- U+ f9 n5 Q" E
, F6 ]$ A, L- h1 a2 U! u8 z* n. @
问题的提示如下:
& o4 i/ K3 ]& @+ r# ?: T6 ?
! W* K4 f3 p0 U9 V  @! u9 T3 c: }error while turtle 50 running OF in procedure DO-BUSINESS/ D5 C$ n; d2 J( n: b: J
  called by procedure GO( ?2 H( s6 V& k1 ]1 T4 p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 }3 o# {; _5 k0 h* o4 k  o
(halted running of go)
! @6 b3 b) T5 o3 x% Z" J& h! w. [( Q0 K$ r+ q9 c, W
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~~
' z9 M1 a" x: R7 u6 h4 l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7 k% u- `2 g% |9 V  ?. T0 \4 ~2 B
globals[
" t3 W; s: p) hxmax
0 m! G: f+ ?, E. @3 rymax0 C+ s# b, l9 ?7 }; y7 \' o# j7 T9 c
global-reputation-list
- u9 h- s% \$ @6 [' g: c2 B2 d4 C. P1 Z& Q
;;
每一个turtle的全局声誉都存在此LIST
- i' Q/ J, f. ^; Scredibility-list
$ g+ \! i; V6 e;;
每一个turtle的评价可信度- a: V7 l) K% ^
honest-service0 N/ @" M" _: K- Q2 u' R
unhonest-service
& Q. j0 M0 ?3 @( P( N, l) moscillation; N0 F: {* v/ n) t" h; V( R; f1 e
rand-dynamic$ K% {0 D/ R: ~5 N% f0 `
]
% l: x: v, _% k, b$ d' X5 j& v" Q0 q/ O+ o# l- F
turtles-own[1 Q2 u) \9 v8 [' s7 Z
trade-record-all
' ]& F) z; s2 s" G;;a list of lists,
trade-record-one组成% L, |# k6 O( i' Z
trade-record-one. W8 ]1 ~1 m: H
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 ^8 t  b! C6 J/ d. \4 ~, p
. q# D8 R# e" ^
;;[
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]]
1 E& F# B3 O5 `. _6 Qtrade-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]- d: u+ Z# R( @* p+ F: 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
; d2 I. {# \/ H3 U/ L% Xneighbor-total
' V: ^# `* A! l1 @* U( g* [! T4 Z" R;;
记录该turtle的邻居节点的数目
9 N& ^& {7 u! D6 r" Etrade-time" X$ |8 _$ S7 T7 I+ y( t  E& P
;;
当前发生交易的turtle的交易时间
8 Y7 o( T# g, c" F5 G4 D! G$ j( Gappraise-give" h. {/ N* K) f' ]
;;
当前发生交易时给出的评价8 z! N* Y' l( W2 e9 U9 j) a# j, w5 J
appraise-receive" q- j) f) E6 F; Y
;;
当前发生交易时收到的评价! r) \  [! Z: L5 k" B" }; Q. |, O
appraise-time
0 Z; b; v9 B( Y. w) g# o6 C0 J' Q;;
当前发生交易时的评价时间
6 L% o( Y" }3 ^& \* ?; i- Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( V8 x: \0 [& K- [' L& ttrade-times-total
! a/ q5 k) k1 l6 W; w7 G;;
与当前turtle的交易总次数( \* K. [4 [; m, g' ?; ^# [
trade-money-total
. a8 {! G3 @; M! |- I;;
与当前turtle的交易总金额
" e; b" q' s9 Y7 hlocal-reputation8 A7 t! r: ~6 R/ s7 ?( P
global-reputation
0 E) o$ m' B$ L4 G# P( D' Zcredibility. ?3 B$ F0 w1 W" {* r; V& w( g
;;
评价可信度,每次交易后都需要更新% x: L$ {4 e+ d/ e9 v$ z# Z) M
credibility-all# ~3 F/ X, M4 e: s( 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
# y! w4 n6 n- L, [
, m1 B: K# e/ B+ n;;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$ t& |0 ]/ n$ q6 u5 I
credibility-one
: v* \0 I; N9 r" @7 M3 g& d5 Q;;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
  B2 C; z) |) r# j# i$ _6 tglobal-proportion* B. M+ G1 `) H# |9 `4 f" f5 f9 i7 H
customer5 W/ M5 g3 E2 ?- A" r
customer-no! x6 W! |! i9 M' C; |# e. q
trust-ok7 R& K, p, \3 u  j7 w
trade-record-one-len;;trade-record-one的长度- r  R; n; u' |- S" q& M
]
+ Q9 V! @: W. d% j* p
) a/ a, @/ p9 ^. ?& I: L' k6 T;;setup procedure' R9 b7 ^" \* W
0 I1 J+ Z( `( R* K: ?
to setup& Z+ h; E- e  I: i
# U5 G' D  w6 m: n
ca

* r6 i8 _- N0 O9 o$ Z
% q6 u  J+ s/ d) d9 @3 uinitialize-settings
$ k4 A. J% |' c& M
, ^: C# [, S2 @
crt people [setup-turtles]

% O0 v# y0 g4 \/ }) o% a% A0 j" N5 N& o/ e+ p. @6 R9 J" v
reset-timer
: o. q/ k" j5 p( p* e0 h1 w

2 x/ Z: y$ M; ]poll-class

5 \: H, b% @3 y6 y3 {$ S3 j; n9 V+ i3 U
setup-plots
! x. l2 G5 U1 e# F; O# `5 f7 X/ L9 y

9 q  L. U9 q; N5 g3 _7 j- O; wdo-plots

9 D5 a" |( i6 n3 Jend1 Y+ i  c' w; t3 h  y2 I0 }
: `' |) C. X3 J4 S0 t' r/ H  D
to initialize-settings0 w9 E; F( j# l7 o( }" H- T& {% }
* q! w3 W0 F% F/ l( e7 o: m
set global-reputation-list []
6 D: C" c- O6 d2 x5 [( a' t4 c

' Z. X- h" z4 b2 ^# ]$ s5 p: Iset credibility-list n-values people [0.5]

1 J8 ^, [# J) v4 d! T7 T  @* A) }+ J  v. [) o
set honest-service 0
! I4 W$ g( `" J5 W* g- g" v( R

2 D2 T- z7 [4 [6 T# rset unhonest-service 0
6 M+ ?6 u6 S  ?# H# U( D

1 u. H, S  e- \+ rset oscillation 0

: ^+ J; `! h, s1 @/ \5 R; m' h1 f& M3 S, l0 Z
set rand-dynamic 0
( y8 c1 r" O' f. ?7 W2 u* s" {
end  y$ h& F( |$ j/ O3 H

- {+ `. _7 ?( K6 _, s* rto setup-turtles 8 d1 f/ I3 c# T$ t8 H
set shape "person"6 H# j; V6 d* l. H! n+ K' Z& k
setxy random-xcor random-ycor
  L( ^/ x: X* |# o/ y3 yset trade-record-one []) A7 Q3 p8 P, U
& \9 l" S4 ]) }2 `$ E
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 K$ p7 Q% G, [
1 l0 f& l8 H! L/ z
set trade-record-current []4 L4 c5 x9 w% h
set credibility-receive [], D! i/ a  f7 T( W. D
set local-reputation 0.5
: g4 ^! e0 O) J; \8 z( X3 qset neighbor-total 0( f9 r8 W/ U8 `- ?
set trade-times-total 0/ ]- H7 _" S+ p# C: R* G
set trade-money-total 04 t- E$ D6 _+ X! g" ^6 A9 X5 c0 ^% _- l
set customer nobody: P1 S! {! C: p
set credibility-all n-values people [creat-credibility]
( Z1 I& Z7 ]+ f5 F2 Q: F1 B2 wset credibility n-values people [-1]0 A* k" Y5 m* f( ]' a' \
get-color
  K5 [- c0 V, L5 j7 J

) `" ~, l( j8 _( ]% ~1 }$ L/ ~. Rend
4 A2 C% }" O* o- r- x! \: Y  s6 h" j9 S, o) p, w
to-report creat-credibility
  O6 X; C7 Z) c4 N/ _report n-values people [0.5]
+ u6 l. N8 p; w' M2 }end
$ p1 e3 [& d' Z( V3 J$ s1 b
5 k# s! q$ l, dto setup-plots* B; Z' l/ U6 D$ N- I( q! A7 Y
2 w, E8 x$ m, o$ m
set xmax 30

' ?$ K7 }3 d; q  O+ Q  t7 e  k% X' v8 g
set ymax 1.0

* u6 C: a- Z( P1 n% v
$ F- y" c! i/ \1 s" e6 ]clear-all-plots

! S4 z0 B" }$ ]" }! Z5 ~4 [# o1 t3 g+ v% L
setup-plot1
6 q/ O# [+ G7 r1 v* ~: l& _" v" {
' L! @5 M" }$ L2 f& w
setup-plot2
3 F$ ~! f" x! ?! U) V- b. T7 p

8 W* `) u/ T$ n$ k" C( q% vsetup-plot3
7 j( w, q( x- E  Y# n& z
end2 B; Q0 b; c7 f

# P+ p, _9 G1 a;;run time procedures
) V* C$ B; w" ~) B/ n
% ^' a5 b- E. e% w9 U$ _* Gto go8 m( E0 h/ E0 I0 X: l6 }

, u: T: T8 e" M" G* j' E2 Oask turtles [do-business]

- u# _# p: n& j' ~end
: a* D" Q: |& W- M6 X/ }0 E) ]& B7 Q' U+ M" D3 S" B6 I
to do-business
& z/ x9 I: R! B; C, V* U
; ~- t& l( J( u: b0 c. v* v* o
2 b1 \% _+ X+ v
rt random 360

/ p3 D' O: c2 m! ]$ K! K5 Q  }: t. x8 U! Q
fd 1
% n* a1 f, }6 Y* [( U- M5 t

% }# X  p1 q& ~% A' J/ I0 M, ?ifelse(other turtles-here != nobody)[
$ V6 M. N6 Q) _7 R% P
( a# a4 J) U2 e2 J" v
set customer one-of other turtles-here
/ D" T, ~+ ^  Y

# c+ G6 q& J$ L. Q# B$ @1 x' m9 j$ |;; set [customer] of customer myself

6 ?" F1 d; e6 h& k: ~5 o+ E
) s$ D. h5 j) s" U+ c1 pset [trade-record-one] of self item (([who] of customer) - 1)
0 Z. e$ `' ]8 P! N- _# ?[trade-record-all]of self
- P: G$ ~+ r; Z: j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 |2 j, I  q  X  y9 b1 N+ F6 s" w! C
set [trade-record-one] of customer item (([who] of self) - 1)1 e9 I' O( v& U( f, m7 \
[trade-record-all]of customer
8 q  h) T) K% }0 S

6 g2 @$ y/ F! V; j- dset [trade-record-one-len] of self length [trade-record-one] of self

  ]: E2 h' Z8 X5 v
; X  W5 ]5 A5 A4 M; P& Iset trade-record-current( list (timer) (random money-upper-limit))

! i+ ^/ r6 {- ?7 a# k0 T5 [4 |. W) I9 l4 Y% O0 A
ask self [do-trust]
8 q& [. M! ^3 X; B) ];;
先求ij的信任度& J$ y. f, ?4 j$ l% a. r; \: `
& d+ B1 b* x- H; D0 r; F# h
if ([trust-ok] of self)
4 {1 _! q; R' ?# S. t; W- r# D- [;;
根据ij的信任度来决定是否与j进行交易[* {. x# e* n2 C+ Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" K% L& N: u6 }" l
7 S0 |4 S  x) R  o  S
[

; `- c/ k4 @2 F7 k! a" {  y+ a3 |+ ]
do-trade

# v8 V* Y5 ~* b1 k( w1 h( i- a. b) L) C* u1 h0 ?% w3 c
update-credibility-ijl

( e8 s* X  d( E# K2 i, a# l2 L& H, `1 p2 P# ]% I
update-credibility-list
7 J) K: v/ n8 g( [# C

& f& u$ P0 k# h; V# G/ n% w! x. W. ?2 ^! z; {8 H
update-global-reputation-list
! k4 V8 D" {3 p) M3 m

, q6 m+ D" c; d/ q/ c$ Npoll-class

( u2 E/ J' u8 d; c5 j; x1 Z9 C
4 K: H' V/ f* h0 D9 t6 Q6 Eget-color

' I3 j/ X- h" {& A/ }. H3 Y1 A
; H( ~& w' Q) |]]
" X# ]. z9 c- Q
/ T& Z) w0 d" u/ u; S( P& }# J;;
如果所得的信任度满足条件,则进行交易
5 \0 b7 n1 \) _3 w3 A$ C4 E9 V& Z" g
9 E; p7 \0 U9 A" M- X% r[
' X5 G- ?. Q# D; @
* Y2 J/ Z! W+ L9 w: t5 J
rt random 360

+ Q* `8 Y! N$ C, G( i$ q! z7 L' [2 X2 \) I7 p
fd 1

* i6 K! Y( N% N4 C6 Y+ r0 ?* I$ S% ~3 ?6 e0 H% |/ f, g
]

' N0 f3 M$ D( G6 Z/ _& W) A' `  J0 C# ^
end

1 \& g9 x1 v5 u/ R; r; B& d7 S+ p2 Z2 |' P+ `  g2 X
to do-trust ' X& i9 B5 K# \9 k0 N( y
set trust-ok False
% K% v2 c) z6 ?0 A+ B3 J* d% X* n4 c& l/ b# n9 W& z: Z* c

& a. I6 R; i, c0 I8 klet max-trade-times 0
& X1 w; P" K0 v4 o2 Z8 e2 uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' Y4 L( z  q* u; i9 j( D1 C4 e
let max-trade-money 0
4 ]6 Z6 r6 I( S; G" h$ Sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: ^1 F; m. J8 z! Y7 ~% Jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, @8 b& ]. m$ ~7 E6 @: W  n5 F
2 B0 F# ~& O1 m9 n$ y) k, Z7 j5 E. M
) W& y" h* j4 o4 J5 t9 D% Z/ k. r
get-global-proportion% l; q6 {: ]/ k
let trust-value
! \4 Y5 h9 m" D5 u, y! V% d! |5 elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# I% S/ O: u, Y
if(trust-value > trade-trust-value)% B& P  J; O5 C9 `. y' g
[set trust-ok true]! n+ o1 `' i( I7 `; S
end
% d0 H- ?3 m* R! u/ s
' Y3 u0 `5 B5 ^to get-global-proportion1 C) j. ^( }5 @8 L- T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. D" Z# _/ }1 T6 L! d0 ^[set global-proportion 0]9 X' J: J& d7 x' b2 V
[let i 0  @7 y1 X1 b. X1 E
let sum-money 0
& b* L( z, ?* {while[ i < people]: u. P% t& a7 F5 b( X0 @8 A
[* d  r  O( s& `: l
if( length (item i( S  S6 b: x6 ]3 ^+ ?/ P
[trade-record-all] of customer) > 3 )
$ q! k' b( g! x5 R1 `8 H" Z
[: X4 B$ x5 j# ?  ~" R% p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 D) `2 y9 c5 `( Z# E/ _6 P
]# Q! J% d+ b( n3 N
]
4 G( {- V7 L: E8 s) llet j 0- ?3 V3 M9 \9 N5 b$ Z" @
let note 0( D  H7 U. |$ S4 G
while[ j < people]! Z; e$ A7 D0 t% C
[
$ o1 j# h; @2 m/ y' Z) \if( length (item i/ {8 h( A0 F0 `0 K* U; n  G
[trade-record-all] of customer) > 3 )
: G  H# i; o, p, v
[
1 J- {' U+ q/ j4 F- Gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 D. m7 g; q% T% }' c  \2 N* i- }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ F- A! {" k# |9 l: p- V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- A0 H, t, Z, {$ s8 J]( I$ z( n8 ]: D0 N: s6 Q+ ]
]
2 T- J2 _4 E% i6 c& F0 oset global-proportion note/ b& h& Q9 [4 m1 w0 h
]
2 \( u3 T- S! [2 Xend- R% A- ]8 G4 K0 L: {7 \4 C
; b5 n% O1 D9 J
to do-trade
- B) ~# p5 F7 o* z5 h;;
这个过程实际上是给双方作出评价的过程& f' D6 Y9 H% W. U# w  Y4 Z+ `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  C# u7 a% @& a9 w. g4 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. E  Z% Y3 f! k2 N7 `3 c# Tset trade-record-current lput(timer) trade-record-current9 C: X7 U2 N7 m( F
;;
评价时间
+ _' R$ h' V  q; K1 ~ask myself [( E4 _$ v2 p1 `/ b1 ~
update-local-reputation
, O2 o; ?/ ?6 Tset trade-record-current lput([local-reputation] of myself) trade-record-current
; u4 e: ~" b2 |, R]* F# I. \9 M" V. j0 n% _, O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( T$ a4 V) B" r$ V( I$ J1 @, _;;
将此次交易的记录加入到trade-record-one! \( v5 R: y( n. N0 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 W2 ^4 C( Q  h0 E% G/ R
let note (item 2 trade-record-current )
8 U/ J8 o6 p4 X; y) d8 H+ @6 eset trade-record-current! ^& s" d5 u6 S# N2 f8 P
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 T3 k% j! a  j) l6 }1 jset trade-record-current3 s9 e% S& o/ G. P1 k0 X$ X$ w
(replace-item 3 trade-record-current note)
  P7 J- t2 k1 K5 Z5 ]! G+ ^
0 I& K! D9 V  L  [
; x/ D2 I( k8 h% f5 C9 Z- ]) E
ask customer [+ W/ Y6 l9 u. ~% `" R0 ^4 t* P
update-local-reputation6 o7 z, ]0 z  d1 A
set trade-record-current
4 c, O8 X# e3 w! c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" m. C9 z) D, r$ v: @) N. D2 m]- x: p% d# P# L9 D

# M  [+ \* ^) M  D( U

+ }! x* E; n' I7 a+ O; F) {6 {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' z: i4 k9 @& z5 S* `) R+ k

3 x$ T, i% ?7 V  L' b' F/ }- eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# e* B" j  O. |0 ^$ };;
将此次交易的记录加入到customertrade-record-all
+ S& \4 ~2 D5 u' dend, A) \' B& S! F) \

* P% e  m6 j. @, g& z: q- Cto update-local-reputation) |/ G( H8 Q' S
set [trade-record-one-len] of myself length [trade-record-one] of myself6 ]/ B$ r6 G5 q: h0 a2 J- V
  N- N* H) O( j  x4 U/ k& Q
9 Y' @8 [$ {" P# A& W; o( W( e
;;if [trade-record-one-len] of myself > 3

, n( e' I% _* f5 i  Bupdate-neighbor-total" k3 l0 W* D( S+ z& I- u
;;
更新邻居节点的数目,在此进行3 w+ h0 @  |/ k6 i1 P* g4 G3 z0 F6 ~
let i 3% u3 w2 X1 `- q) w2 B1 h# k
let sum-time 0
/ e) D- @* Y8 f6 E9 lwhile[i < [trade-record-one-len] of myself]
$ N9 G8 N" f% r) N[
) u' P! Q1 a9 L; N2 Tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 i: @) V1 g- |- G& }2 L3 g, x' P6 S
set i& k9 N5 O' n6 z4 h6 v; V$ Q
( i + 1)

( c  h3 b+ o$ B, T) E]4 M: o$ Y3 j8 O& S6 h
let j 3/ P! S3 N, r4 L- y' V: b# @; s+ G
let sum-money 0
' u& J" `; ?# h) M0 s  A/ g4 i7 ~; [while[j < [trade-record-one-len] of myself]
! j$ B4 F7 \2 u( {/ C  P# P: p& T0 e[
" V( j9 e& A% d) Z$ y+ d0 O* aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; j! j/ ]: x! X. {set j; A9 R, o( ]& o8 t% D! S( z" c
( j + 1)

5 D+ `, o' }, P7 i+ ], v7 A4 f]
5 L3 ~' t+ f$ E8 w8 h9 I9 _let k 3
7 }2 ~1 q: P4 |9 T2 g# B  p% Z% zlet power 0
8 P6 O% e) ^7 X( n/ A- zlet local 0, B$ V" G5 b5 x
while [k <[trade-record-one-len] of myself]
$ L6 S2 K/ H2 g" G2 h5 F6 \[+ B: M( ]" m1 o+ a8 E4 n  c. T
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)
+ _6 M! z+ t) B. m3 g0 ]! i  g; Gset k (k + 1)
$ v( n1 P0 v, m+ t, r" d, ]]
" K8 k; t( I3 L5 P% Y& y; [, fset [local-reputation] of myself (local)
! }) k, s. [: b4 u, oend% c" ~6 P% Y3 P( b1 e& [

9 L0 \7 b, l3 w& ]. v# jto update-neighbor-total2 b' L5 B8 E& R, |0 {7 X. F
7 Z* z' C4 m! ^  R- c' X
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" y; ~2 c8 G. T- n; w  O2 t- q5 W( c
7 V% J" M. i7 g+ |4 u

: o1 @+ F/ Y/ F( nend
  t* X3 {  _4 U, {3 i' `9 y  B! ]% x6 D0 M, E
to update-credibility-ijl
/ Y  \' S1 p' i8 q7 \  W2 a; c3 k, e7 K8 V  z( \0 K
;;
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。
; X% R2 A& a# }# b8 q) Zlet l 0
4 B  X  s+ q1 Y. Lwhile[ l < people ]  n) W5 S: x" I( [8 V6 ?5 C
;;
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
* _1 ?2 O* E4 Z' c0 S- R[; N5 L: u* w2 q- |4 M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 y' I4 Q( X9 z8 Hif (trade-record-one-j-l-len > 3)+ k7 W1 W! ^6 J. v6 z6 w
[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
5 a4 n  ~- p# r  i1 h  Slet i 3/ r: k: C! T; X) L& I
let sum-time 0
+ t/ C4 K/ x9 C" ~* N; {& V- rwhile[i < trade-record-one-len]. l0 p# [3 ]2 v
[
; e, @: v8 ?' |9 @5 p- `6 G/ uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& _4 T6 ~; c" Y6 x9 W. C/ Yset i+ c/ o: M. P& ?+ d+ j- f
( i + 1)

* F$ Z7 e8 o/ x]9 p. k8 K" n0 ?! T
let credibility-i-j-l 0$ l: j- |0 ^8 r
;;i
评价(jjl的评价)
9 S2 ]' }; L2 ^& o: S% v3 Z$ v" {let j 3' J, |1 y- F* d: e2 l/ d# \! z
let k 4
6 z2 b9 N9 M# f; |1 _" l3 d/ Qwhile[j < trade-record-one-len]- V3 G5 `2 E1 i: w- T
[
1 s, Q$ I2 Y% z& G5 }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
4 L! F& T& y" d+ Y* Sset 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): p& g" c% s% V! V* A  L! u3 j
set j
8 O7 g0 c4 N6 X" G( j + 1)

1 A4 r* X$ m2 @0 `]* h* q$ c# d0 M$ {' r. J
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 N- w: s, J3 C6 p" f7 K$ \% E* \6 c5 F+ }# T, e
1 o0 e# s# J  [3 N/ S+ A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ p+ |& z0 q. S: c, E2 c% m
;;
及时更新il的评价质量的评价9 w+ w: C% a$ |! k
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' ^: H- J# K% k3 L' `( N
set l (l + 1)3 B$ x' L6 y$ g, J
]1 @* I: I4 K. W! r4 l* b% p
end9 \* N, A7 V0 f9 F6 d7 M

; B0 X: q5 F7 C; k5 wto update-credibility-list
: i4 @- ^. o" G% D/ r9 mlet i 0
% ]3 n$ Z/ s, C: W/ Q( Vwhile[i < people]
$ w- I; a5 n  C- ?/ [7 T+ ~0 o[
( R. I. ^4 D% _& z1 z! i% `let j 0- p0 m) V/ m1 V3 e' R7 [; M  U
let note 06 D% E# F# h& T+ E0 x0 [1 K: _
let k 0
5 H, f$ t  T6 h7 D) ~; n$ ~: u;;
计作出过评价的邻居节点的数目
# }% t, t" W* c/ U  T- Uwhile[j < people]; Y& B5 Q% F9 ^  {7 c4 O
[* W4 h2 D/ e# c. g
if (item j( [credibility] of turtle (i + 1)) != -1)
3 W+ m$ T  F* @# y;;
判断是否给本turtle的评价质量做出过评价的节点1 Q! i7 i/ a0 f4 R1 V2 v
[set note (note + item j ([credibility]of turtle (i + 1)))
/ h9 N; T  p) K' |;;*(exp (-(people - 2)))/(people - 2))]
: w8 G% X! _6 J. |6 c
set k (k + 1)* T6 |6 D3 O1 m7 R# H+ a$ _
]  b4 ~- I$ b# U* F. U5 r. R
set j (j + 1)
1 r& d, e6 {5 p/ q]: S, L0 X5 v+ u
set note (note *(exp (- (1 / k)))/ k)
. @$ z5 ?0 e9 `/ e1 M& N; iset credibility-list (replace-item i credibility-list note)
$ N. h1 K# u5 A, e' T3 `set i (i + 1)  t+ h, Q$ v( d# ?2 x, S# m2 s
]
2 z9 m# {0 y+ b2 l3 G7 Kend
" l/ \- z. {" g  w: |
3 k1 k) d& V- }7 L/ J% c7 Eto update-global-reputation-list  p9 W6 u, c8 z3 S
let j 0
1 U- f4 `. }1 A; q# [while[j < people]3 f1 f7 ~- i! R! R) ?% B
[
' R$ C) A7 `2 c5 g/ s  T6 zlet new 0
2 j+ N, v8 E8 c  s4 |% n;;
暂存新的一个全局声誉
" T5 T& X: c: w9 c* A( }let i 0
  t$ j* D) ?( ?% @let sum-money 06 }2 M- G5 l" C
let credibility-money 0
0 L  \% V3 P0 G$ t# n4 q' E- g6 k5 Ewhile [i < people]
& ~, A4 q' f1 f[9 |% T4 x9 T0 D- x, j; o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# m4 Z) ?, a9 K( h
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. z7 M$ \) `: k% e: p# X+ }! aset i (i + 1)
; G& e9 N8 M! Q5 N# F. Y]
, m! B4 z/ R7 W" i! _# ^let k 0
2 V2 t" j- B" J5 F! p1 olet new1 0- q- U0 A! s. s" ]/ }
while [k < people]6 f- `4 Y# [. k
[  M% q5 b& ?2 l5 G. W
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)6 O9 l( t% o( d( B& l
set k (k + 1)
& k4 Z, H9 M- C5 K& j! m2 }]: r1 c! O0 I# x: b/ k
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% J0 O) U) L$ ?; vset global-reputation-list (replace-item j global-reputation-list new)
+ V& H% w7 {, L' j$ K# iset j (j + 1)( S" u+ y! J: p: A
]
' i( c' k$ h9 x; Gend
# ^( M  e& p: f1 W% q* }' W( j' ^9 ~( o
1 |8 ]- I5 }4 e
  c+ e' X1 w2 y. i  ]
to get-color
: k" P% b7 B- x) o, u: D9 D/ ^+ o4 ^) I6 |! n1 W1 @- ]
set color blue

# k+ j. q0 k7 j# R; Y; ?6 G+ f; H7 mend, K& V# k& w( U/ r( b
* i; x% H7 I. K. J4 Z( E2 t# ]/ v+ @+ H
to poll-class
+ H) ~0 ]8 t( v( bend
6 O4 r* B3 f* Q( Q8 \+ K8 V2 y  n0 p7 A7 j0 w, ^
to setup-plot18 u& X7 r+ F" H, u

  c- K9 g( E$ Uset-current-plot "Trends-of-Local-reputation"
  R+ ?$ c" \6 e0 K( ?) s7 H1 u

! c+ \% J% @6 P) w) |! K! }set-plot-x-range 0 xmax

7 B* h' ^3 X, I. @1 d& [' B0 F- G
set-plot-y-range 0.0 ymax
7 z5 V3 q& P& r8 w% S) F
end
7 D- i, Y. V2 G2 A! f5 J
, F& R0 `. K1 D, t0 ]  hto setup-plot2% M* Q; H) y6 ~' |+ n& j% F

- U4 n. b, N; N' `8 Jset-current-plot "Trends-of-global-reputation"
9 L0 @: V! d( J0 D/ v; z
5 L1 ~3 [' D) S' s: u/ d" z
set-plot-x-range 0 xmax
, f  ^6 q5 G# e1 F& l2 i

4 ~, W( c+ m) D) C1 s/ Fset-plot-y-range 0.0 ymax

: O" O% p$ x( y+ `: I* T$ Dend( R& l6 z) d$ ^, |
: T, N$ h- f: h
to setup-plot3
; Y* }, Z) m/ X8 a7 ?' M3 R2 w9 {
set-current-plot "Trends-of-credibility"
# z2 W# c' w8 L5 E- W

+ O" `( {! w. t* p: n$ _8 l; r- G' N! T/ ^set-plot-x-range 0 xmax
" a6 {; ?3 C4 ^3 D0 d. O* ]* F
# o2 J8 v" ]: u; d3 U3 v
set-plot-y-range 0.0 ymax
' i1 p" H$ h1 M. j. _# Q2 M
end! V, R( h: d1 ]

  x9 M% c' E3 s8 Q. bto do-plots4 J8 o0 a3 z& b) A
set-current-plot "Trends-of-Local-reputation"
9 \; k/ ?' G( t* q) kset-current-plot-pen "Honest service"7 |3 p" c0 _- U, K
end
% `# G1 E6 z$ C, E: _' T0 j! U5 J3 h: V4 K
[ 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.6 {& A) @- c, ~3 G* [. a  m) }2 s
4 ]% m+ V: A, t+ @: m) @
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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