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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:5 m2 t5 Z9 w. G4 ~3 _" y* A
to do-business " B; A" M% z- A, H# M, a
rt random 360
& M/ D$ H+ g4 b: } fd 1
; T  H! f: S, e* i& h ifelse(other turtles-here != nobody)[/ ]6 r) M4 Z7 [8 f
   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./ e/ P( X1 E% r5 ?$ b) j3 X/ Y$ D8 N3 V% n
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; J0 Z: v( k5 P( i+ P" V5 v9 m9 y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ Q1 h" d5 w3 U% m
   set [trade-record-one-len] of self length [trade-record-one] of self
* j1 O/ J  b* f8 _' K   set trade-record-current( list (timer) (random money-upper-limit))( b/ [& ^' E6 z* t+ m% g

0 j+ c1 g  Z  B9 d问题的提示如下:
) G* R( ~5 Q, v$ W0 m3 P2 I) T' M9 e5 B
error while turtle 50 running OF in procedure DO-BUSINESS
* d. `; r& i. f. R" m; l7 O  called by procedure GO( K/ i) P- P4 b- S2 ~! \5 y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 U: g. C3 u3 e0 L. a) q  Q: _
(halted running of go)
% U0 W- T5 Q3 H6 u. h
+ ~" I$ x. f( R. w% x  K2 r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~~
! [3 @' \1 r7 a; z0 \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
0 j" [# u  B- S: `globals[" B7 ~1 j4 A; R! S
xmax. d6 ?4 f: t' r( u  J. q* V: J$ L
ymax. {: T1 P$ A; p- Y
global-reputation-list
, _/ O+ u7 e# ]; ^/ `. F
; ^* j6 g- }' m; O! ?2 v  S0 P5 T" f2 {;;
每一个turtle的全局声誉都存在此LIST/ i) N/ d1 {( v. }9 J
credibility-list
+ j( K! [( v$ l( _$ Y;;
每一个turtle的评价可信度7 O- _  l3 b* Z/ M
honest-service
' h3 s: ]8 r; x, munhonest-service% L) E6 P, e) m$ U- S4 I. l
oscillation" R& V  ^6 \  g, `: R" i
rand-dynamic
! d4 h$ N5 Z' m* F0 }& n]
! y0 T- s3 `/ n% p# j/ @+ |: k
, H) X/ I! d5 zturtles-own[7 Z, r3 P+ F; e7 j" o* b- ~
trade-record-all1 E8 c  Q/ Z$ B
;;a list of lists,
trade-record-one组成
, V  q$ c: u  M5 z+ M# mtrade-record-one
8 X# \; l+ e: h% y; Z! r: L9 C! A5 d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ P+ O3 D/ B+ J3 X( e! i
" A6 P; V# s1 \1 h( Y;;[
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]]0 y/ d1 P0 k$ T0 \! l; ^
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], f6 N3 [) s( T* f2 u" e
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" X/ b6 ?6 o& A
neighbor-total
) Z+ Q3 \( X0 q0 B  f# V;;
记录该turtle的邻居节点的数目: e& W  G& m, T2 J- o9 f( P1 }
trade-time' o4 L, }3 |* \) ]# `
;;
当前发生交易的turtle的交易时间  C$ N; I, N; v+ h3 ^. B; O& w5 S. `
appraise-give  {& S6 n  s8 D( x/ Q  _
;;
当前发生交易时给出的评价
# Y6 T" ~. C& l& _4 Mappraise-receive
. _3 V6 D% {0 _9 m2 @3 E' K# \! F( y;;
当前发生交易时收到的评价5 g9 t3 D+ S. X' S/ ^- }
appraise-time
& T/ H% Z1 Y$ J' K' C' w7 E# A% I; }* i;;
当前发生交易时的评价时间
: O# N; B7 p3 \local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& i/ j$ ]- C4 ?9 ]* ]' z$ qtrade-times-total* U( G+ {: v0 G, c) q  w% J
;;
与当前turtle的交易总次数
" D  S* d' S0 @trade-money-total& I! R4 G6 Q& D* r' [) ?# f
;;
与当前turtle的交易总金额
; Y3 g$ [* l& O3 q! n* g3 |9 Nlocal-reputation
( `* }( Z$ W) f$ a; wglobal-reputation, H# }  H* q' [* v& J
credibility0 e. n" a: k, e- s) Q* o/ O5 |
;;
评价可信度,每次交易后都需要更新
% P" N; i) q! |; \# E8 Zcredibility-all
+ ~% m  y/ J) s- q  R;;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, E! G. D5 V3 b/ ^4 x: q  O! u/ e" ~/ A

) ~# P& f6 N+ U; w! v2 h;;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0.50 J" P" V: N" C: P
credibility-one
8 i  }" D+ S9 i$ |% Y* _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
5 l: Z+ l3 V1 [! w& [2 Z2 _global-proportion+ a1 z1 J. J" [% d
customer
+ U: w9 I7 h& {/ P6 x+ c# B: Xcustomer-no
2 P' C& ]* T2 G) ftrust-ok
8 Z; `2 M3 x0 G8 ?trade-record-one-len;;trade-record-one的长度7 h# m& }" a- [  g7 U4 x0 [
]0 N! S) X0 O* k+ q  V, h

! q) ~9 }$ e0 [1 b( E2 X6 @;;setup procedure
$ P4 a% \: x  z/ @$ U1 f: u2 ~5 R. _
2 K: b4 T3 i; M6 j7 I! y, nto setup' ?: d: I* J0 T4 i& r+ R& m

$ H1 ]7 [  [+ R" ?. l2 Uca

0 ~: Z7 p% H) n) ^$ P5 S! C/ \1 W5 }4 A* }! W
initialize-settings

9 v6 }; V/ C( g
. e' `- _" u( b# l! fcrt people [setup-turtles]
$ }8 u$ {7 l, O# I  f  Z
3 }' k/ x5 ]) Y
reset-timer
+ J+ L. f) @# m
! P) {4 B. s) k8 m
poll-class

7 k8 s( U; h# Y% j5 T3 g2 n1 p9 ^
. L5 A* W1 m1 `* ksetup-plots
3 ~( g. s9 U& `; j! O5 F# G- r
0 U0 r  Y0 T0 t. s' O
do-plots

  @' o+ Z7 R0 yend
  S6 B0 a8 M: |. n
4 i4 \( x2 y* C0 F2 c: Xto initialize-settings7 M: l6 o* e. C/ b2 @

' F. ?/ z& Y) kset global-reputation-list []
1 |! f9 e) t' T, a* k' c8 a7 n
) B7 S! ^  s0 V  M
set credibility-list n-values people [0.5]
6 L! Z: H( i7 F
, M! k( [0 t/ O: h; z
set honest-service 0

7 \5 [2 N( U* ~- t9 b
3 K2 r" a, S8 e3 Iset unhonest-service 0
$ a6 }8 E5 Y, I$ L
( M9 f, j. X6 ]. I  J9 U
set oscillation 0
" f) `* r7 y+ m2 {

7 w, @7 f" n2 ]- @6 C5 x, lset rand-dynamic 0
( B" x8 u! ^- M8 k$ ^; p1 A) u
end+ Z3 Y3 E. p: Q- u4 N
" ^  H5 }" |2 S/ s+ j' W! c2 g) H
to setup-turtles 3 b) {3 B! J' Q2 Q5 ^; Y
set shape "person"
& j8 `5 K4 A9 bsetxy random-xcor random-ycor
5 A3 }3 W" Y. M4 n3 T4 D$ n& v$ p/ oset trade-record-one []9 U; ~' P: h: l4 R/ h

" U' g% d0 T6 `6 j' Sset trade-record-all n-values people [(list (? + 1) 0 0)]
3 V8 j# z' L1 A  f' i! n

; ?7 t, h  @' V/ Rset trade-record-current []
  B' I; i) b8 T/ C5 oset credibility-receive []3 m& q5 R7 t3 w
set local-reputation 0.5; v, V) n, c! G8 i
set neighbor-total 0
- M' X4 T6 J6 z0 J$ k4 Rset trade-times-total 02 H- u) W: Y5 Z- A; o( R6 n/ y
set trade-money-total 0. S. t2 u5 h1 A7 y0 k9 [) f$ A8 A
set customer nobody8 l' n8 @& X4 e2 _, U& B- \
set credibility-all n-values people [creat-credibility]* I& }- `6 B7 \6 W
set credibility n-values people [-1]* m9 h3 b$ d6 [' E4 {1 Y
get-color9 l& z+ A! p. i) I$ c: p" F

4 l# B( L' M$ b' ?) s# @end- @& d) k) O% t2 v3 `5 G/ Z
, t5 F8 d, v9 G: s4 u# g+ D
to-report creat-credibility' I8 y7 }5 X" N
report n-values people [0.5]- d" H# w, v& }: z- @
end" `8 e6 U9 g9 E( Y8 I" r# n3 C

( u* n. f! V  [# O# W+ P7 u; p6 T) E: Qto setup-plots
3 Z0 U/ m. ~3 `: Z6 e& Y3 b
6 _) D7 h/ P2 a1 Vset xmax 30
% P: K$ p3 Q4 N$ d: B- V
1 I% J8 }# A/ |( ^# x' |
set ymax 1.0

0 M! j1 b( H5 j4 _# ^# a& j* F. e5 T" S; I
clear-all-plots
- _' s& B9 N' S- @5 F
$ `9 b  U$ m6 f. |( y
setup-plot1
' H+ c' u8 F4 w: E2 s. c2 m3 I
  R2 d  K$ N, F/ J! C) V5 W  c/ h
setup-plot2

" ^6 t; c3 ~3 d4 H1 B* E; `  [: Z6 W& w9 b# [* u/ J
setup-plot3
* }+ N# K1 ^: w, J* g' o% A
end( W* g, `; H- y# A; j( p( I

" I" ^/ f* S( x, M+ w6 j;;run time procedures  P# F4 z/ L! c, P. O

7 f( Y7 Z1 M5 h4 D+ b7 |+ \: i7 Dto go/ B# h  N+ I/ `* E+ n6 h9 V
/ }0 x4 R8 \0 M0 p) F
ask turtles [do-business]

2 D8 f# b6 B- O( Qend
# }+ v  D1 R9 s" L; W
* n% M- K# J7 l4 ?* ^$ E2 C- kto do-business
, _  H5 _3 A! }4 I; B

$ i4 M' F8 z& d0 H1 q
4 f& {. M4 t) m5 h$ Q3 A7 Frt random 360

  B9 D* ?7 c0 s2 z
' Z6 L* E9 C4 S& X6 ?8 Wfd 1

7 m( J! N( H& a3 A/ V6 f0 `3 U
9 k5 }0 h, _  l! N$ [. i4 @ifelse(other turtles-here != nobody)[

2 M1 x7 e! g$ p7 d/ s1 m# j7 m
8 q1 D( Y& B+ Oset customer one-of other turtles-here
$ F. c% W5 _' q$ n! s

5 P  V: t4 U& j;; set [customer] of customer myself
' E' K4 d0 @* G9 m+ c
5 ?7 R6 V+ J+ ?; W2 f7 m: i
set [trade-record-one] of self item (([who] of customer) - 1)
% Y, N: P2 I/ \$ B# T; b[trade-record-all]of self
! G/ |% a* ^, X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, b0 J* r( n  z! Q$ k6 x1 j4 L5 h* m: y4 z$ p
set [trade-record-one] of customer item (([who] of self) - 1)
7 y8 H) i1 C3 s) S$ @[trade-record-all]of customer

( n1 @, v, d4 ?5 T, S
7 u, V! Z/ h" O* s7 j( I3 r) M% Jset [trade-record-one-len] of self length [trade-record-one] of self
- x: G0 v, m: X- U# n

+ s3 B4 g. ^! Z8 F. rset trade-record-current( list (timer) (random money-upper-limit))

9 x- n+ g% |; _0 v1 G0 E9 p5 p
1 E- o9 w+ [4 ]2 I7 Pask self [do-trust]3 S1 T7 o1 }( W2 g
;;
先求ij的信任度6 ?- d+ v( q" c; A  t
7 E' v# D. x+ l0 j' V& ^9 b8 I
if ([trust-ok] of self)7 L" `+ [# Q- G
;;
根据ij的信任度来决定是否与j进行交易[
+ W" G# L1 y. Q3 V6 m' V$ |8 Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 k( P6 X7 u) \% o! W& ]4 z5 h9 S) `
[
  H3 K- E4 s% P( e/ B8 g
* W1 S) U- c. D& v" Z* c2 T* ?* R
do-trade

1 W+ |3 ~# Y5 F0 H/ P/ g7 F3 O# R- A: p# }/ K2 ?
update-credibility-ijl
7 u2 q0 D# Y+ c% r: @0 y
' m7 f5 u$ K& b4 E3 t) l- d: E
update-credibility-list! G# P; M6 O* h) u! q4 q, M

) _% l# ~3 ]; x+ ?5 f, {5 ]: s. u, x* |* a2 S! P* o
update-global-reputation-list

9 I- a- s# c  M" v( C% f. x8 B6 B2 x2 n! J3 k; U& Y! o  w8 A
poll-class
" F4 Y- Y! Z) i; T) ~1 s

6 j7 K4 s  ]; K0 K0 o; `get-color

% }6 R9 e1 y6 f
7 |4 B' B$ l& z% v]]. j! J* W! q* M

4 Q' R1 h) H' D4 Q6 A8 x3 e;;
如果所得的信任度满足条件,则进行交易4 |$ u4 O. z2 {; X
0 Z8 B* e% f2 T8 A6 H' v. V% J; X; F
[
& ~6 ^0 O  f, t  _4 b1 G5 s
5 V& L9 `/ r+ r' w8 j
rt random 360
8 D) e! U5 L7 P8 \8 l8 k
' ^! s8 G3 G( D# y
fd 1
7 Z. @+ i* K. v  n8 U+ m1 Z$ O

* L# Q1 Z4 Z2 B]

$ y% s! [/ m0 m4 b( w* P; W1 r1 W: a) q3 R8 m5 ^' A% q
end
8 F- F) \; `/ q

: a) l0 \4 l, U9 q' y% Y" fto do-trust
! p8 ~  m7 `5 d7 M5 ?0 C% R' N4 {3 Iset trust-ok False- P7 d, i8 D% Q) Z6 D0 }

8 x& w' `; v" e

- H) h0 U: \  ^' Q. G% G6 mlet max-trade-times 0
5 N# P9 M; _( V9 R7 C( k" zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ P1 ~& E2 Z, q2 n; B! f3 @6 Wlet max-trade-money 09 S0 E; ?$ I  ?7 Z! |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: g. v1 X! p' {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) X1 Q& T9 N4 y
: X. d& |7 U3 P, a) G) q8 v) s
+ A, C2 C' K# X- J, I
get-global-proportion2 c, a, h$ r+ p1 m( v% y# Q
let trust-value& P. {$ j: @% W& r
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)

; b7 ]5 u4 @9 E  Z+ d7 @if(trust-value > trade-trust-value)
: T% V" K% w4 N. G9 Y) o0 j9 N: M% Y. w[set trust-ok true]) N  ?# A' z3 v0 l6 K( H, P
end+ t; L5 i. S7 h* [4 m

  W) _( [; ^$ e, ~2 p1 j7 |to get-global-proportion
! }( p- H, t# h2 ]" k- iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! U5 f2 D0 Q5 C- `# I# ?/ {
[set global-proportion 0]# ^, M! @/ G1 K* l4 h' k1 d/ R
[let i 0: z( V5 y9 A4 @3 Z4 J
let sum-money 0" l+ F0 p: E9 F# q% b
while[ i < people]+ J( l' o; Q3 o  u  |- i
[
! @4 V5 y3 F0 U, P& m3 O" k$ @if( length (item i/ s9 y0 g9 u6 M$ G1 f3 t+ T
[trade-record-all] of customer) > 3 )
2 x1 `1 [. k* {" J6 q
[
7 S3 Q! ~5 O+ ?) m$ D( \set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& ^. N! C" a# k  r' z& e
]
4 C$ @+ ?5 F( c% T& i]* [9 ^$ ?3 ~1 K6 `' S3 W( g
let j 0; ?, S! R% U0 p* e
let note 0
) _: [* y# t4 m+ _while[ j < people]4 \! C+ }" v; O
[# I; G- h2 {6 Y1 t# j
if( length (item i& _  K/ w8 z- R7 K4 `+ a7 Y
[trade-record-all] of customer) > 3 )
4 |, P& ^3 B. C0 |' E& [2 i
[3 B$ M- L1 s% |' R0 E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- N+ H4 r/ x: L) w) y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# y* `  y+ ^( |- ?! Z1 X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( I) D$ i, n* B9 r, T]+ v& `' F6 ?" O$ o+ O4 c8 c
]
( ]+ i+ l' V* }5 O2 l; ?# `set global-proportion note  C/ l3 B8 n! o  P' j. L
]8 _) V% N/ r, y
end6 K  K3 L# e  ]3 I; m

6 x# w* e: ~0 M9 ]to do-trade
0 k: l, i0 V7 {8 d, g+ F& t# G;;
这个过程实际上是给双方作出评价的过程
* }$ i# A$ D' T7 G% \3 g) V/ Y. c7 `: j% hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 z8 ?$ C- |6 {" K3 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. w, v1 q, `. E
set trade-record-current lput(timer) trade-record-current/ ~8 ?' c# H9 y& ~
;;
评价时间
# |2 A0 F4 F5 ^, |3 rask myself [) E( ?# E" D% U$ p, j) Y( R
update-local-reputation
0 k% I5 s, j# R8 v* Oset trade-record-current lput([local-reputation] of myself) trade-record-current8 k5 Q4 {. f% t  z6 p
]
  S( ]2 Q8 {4 u9 F) F' H/ f- kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; `! [" M. \' u6 B7 M- u7 J7 E;;
将此次交易的记录加入到trade-record-one
: o" p; C; A% z+ I( vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  J$ e/ c9 Z4 L# @* q) Alet note (item 2 trade-record-current )# L- G, c$ h8 N, h
set trade-record-current
7 ?0 O- R& g0 \1 a" U. ~(replace-item 2 trade-record-current (item 3 trade-record-current))
' I' F0 r( v) j: a+ D9 V5 `/ @
set trade-record-current5 M' O& q& H# |
(replace-item 3 trade-record-current note)
0 e5 d1 y' y0 M+ E" z0 @# j; y7 A; K2 N. B3 U/ V$ S% x! ?9 ]# b- x2 h0 Q

2 C- H+ R3 p, ^ask customer [* J# u2 `8 Y7 S7 Y' \3 v& _
update-local-reputation
. a$ x1 ^% P  l, D7 Mset trade-record-current
7 E# l1 F" X& T8 j. X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. ]0 X: S5 ]' w- F  L* []
( d, h+ e: L) T
+ Y( s; ]3 W  x+ ]0 C8 K
* W5 B5 ]# b, x# E/ V7 b! Q' N
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! ~+ }- V  ^. A% W& t

. q/ z# J0 I% J, B+ Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* X, Z9 V; @, k. Q) r; m# d+ n
;;
将此次交易的记录加入到customertrade-record-all
" }, U5 r- ~4 Y7 J# [9 Dend
! u1 w( z( M6 Z2 y$ [/ _; n
9 j6 N& q9 R0 e0 Z( wto update-local-reputation) E4 |. `# {: ~" A4 L
set [trade-record-one-len] of myself length [trade-record-one] of myself
# `# T& T& q2 h4 s& Y+ z# D
, ]5 h3 A, C. O9 Z+ M* A
7 g8 a7 @4 `: Y;;if [trade-record-one-len] of myself > 3

. \2 t4 v8 I% _! U' X) m" Dupdate-neighbor-total
: E+ N0 L: j) l. m# `+ J; C3 H) D;;
更新邻居节点的数目,在此进行
# z0 t5 M- n. Q: {2 alet i 3
+ H/ R6 x1 n+ q& _/ p( c2 P- slet sum-time 0! s5 _* i6 U, c4 G
while[i < [trade-record-one-len] of myself]0 r( X' F8 A7 _. ]( G3 L: o: W
[
* w  R0 q4 O3 _( n+ L: {- cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" {' G) a% z2 F' S( @& Kset i
) e& a" K6 i) x" o5 k+ ?- l( i + 1)

9 Q; @0 w* z* B6 n9 e]
, l$ h6 q+ u7 a4 a& flet j 3: z0 ~/ J* m# j, I6 }
let sum-money 0- v7 i7 L7 R) j# F
while[j < [trade-record-one-len] of myself]
( U- m# |5 [2 u+ I" T% v[
# w) {6 @) W+ E6 Z$ e' Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
1 \3 O% m9 u, L+ j. W. R- F7 \set j
$ V% W, B  A8 ~( j + 1)

( D( q+ C) k2 |& d: J0 h) ~: q7 @]
& _/ k4 Z" [2 Z: Z; _3 v) mlet k 3- {/ {) g  C6 v; D- |& X. @: W7 n
let power 0
) h- y8 `3 R; V- u2 v- Alet local 0$ o3 L, |& N; E" v; T4 i
while [k <[trade-record-one-len] of myself]
$ ?2 n8 e5 H/ Y" h- G8 N9 E: }[2 Y5 K6 k5 W8 Y* O
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)
; o1 r# G9 Q+ F; d( P5 l# Zset k (k + 1)
+ N9 [3 Q8 b! g; d& J]
" |( u* [* b# H$ @4 @' T- z( _1 ~: W: h) Cset [local-reputation] of myself (local)
$ _# {$ z2 |2 A# _8 d$ O+ S6 Wend
/ p+ B( f+ Q+ G7 n4 s. d, }% B  j# q, g& T# O7 w5 }
to update-neighbor-total
) }( r  y7 I7 k  g! g+ G1 n" N2 ^, T% D6 }; {! F7 V7 M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 w; G: u* R, _" n1 O

$ [8 D: D9 `2 L% k3 f

) W; b) L! P+ P( C7 q) D- Aend, P8 F- t+ _& n. q8 H

6 Y7 K' J- S1 g" T* s! ito update-credibility-ijl
& ~1 _0 D8 d( {1 w7 P
/ e7 a' z8 V" `6 Q' G: G; 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。
  R% _& f( E. @( N. M# }, Z) nlet l 0  j( ]7 s; {% w( A
while[ l < people ]
5 b' o; w/ V* H( Q% l8 W" F;;
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7 r; T2 R. b5 X( J
[
. ^# a0 y! `4 Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)# I$ r) _# h" g9 f, w6 V# j0 C
if (trade-record-one-j-l-len > 3)5 E) p8 h9 I+ _! s9 d/ I7 S# |
[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-one5 E7 S) E3 u% X
let i 3
9 S8 B. i! D( \* v( Tlet sum-time 0) \7 z$ \# R% v9 [# j
while[i < trade-record-one-len]
# D8 k+ C1 ^) x$ D[* i; @' @0 Q! o2 J/ K, v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' n! G8 y: L/ O+ a9 j) m' R4 E6 O1 ~; sset i
2 }# V9 A% `4 `3 u7 S: m( i + 1)
9 l6 u2 R7 T4 P0 u( k
]
1 V& g7 U' Q9 t3 rlet credibility-i-j-l 0
8 k/ Y( o1 f6 p5 v  C; y;;i
评价(jjl的评价)
' \- D5 w6 ?2 k% h% S8 X" I6 Vlet j 3
( ~  l+ r3 e& o5 e  |) C% Ylet k 4  v& k, p9 D# S! o4 Z; Z
while[j < trade-record-one-len]4 m1 K% @6 u0 E  n: M5 `% ?6 b
[& b2 c7 I& z. B. [
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! g0 Z0 F( m5 {
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)
' c* @- c9 w* n# y- F6 T  X# \set j
) }+ f# ]: M% Y5 X4 I% ?( j + 1)
% k& c; j1 y6 h* _. N0 L! \. d
]4 ^" w: p; H# E/ ^/ L
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 ))$ _% E, P3 _* V0 x' G
5 ]0 m; K9 G. ]  z
0 K& W  G3 p/ h- T1 G
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( [( B# U0 M% A& g) U! ^
;;
及时更新il的评价质量的评价( j1 \8 G/ T9 Y2 ~" T5 X* x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 Y- ?7 T' t! L4 ^* G) t1 A$ Wset l (l + 1)
( _9 \  X) D4 l4 ~$ U8 l]
, @. {' a# |3 ]. N: x+ bend" E6 p6 Y- |5 x0 t$ Q) k/ ?; m7 ]

' K" Z9 i* {% \2 {$ \6 B4 Z0 Uto update-credibility-list2 r2 d' x3 s  ?2 J/ D3 Q
let i 0
: \5 R) W9 ~/ ~  F! C9 Gwhile[i < people]; D; V/ ?( D. E% ?. Z
[7 {) F1 |2 f- c% v
let j 0- d# y. A  T  Q9 x2 R
let note 03 p$ l3 n7 b1 H
let k 0: `, `, n: [/ W0 x
;;
计作出过评价的邻居节点的数目
! \) H, w) S$ c- T$ a7 `" ewhile[j < people]
) a7 V: ]8 G! F[8 ~. ]6 n% |9 f1 o. B9 h3 o0 X
if (item j( [credibility] of turtle (i + 1)) != -1); {4 l3 }$ T$ ^$ M/ g. Y2 N& H  V
;;
判断是否给本turtle的评价质量做出过评价的节点
) x& l. y; o- d# j[set note (note + item j ([credibility]of turtle (i + 1)))
, N* S* R/ c/ p;;*(exp (-(people - 2)))/(people - 2))]

* O  R' Y5 t: J6 iset k (k + 1)
* [! R0 c" x& y) G0 V6 U; M: A2 L]
% G' h) w, w0 ^$ c6 Uset j (j + 1)
/ ?, \9 [  A7 Z]
2 L9 o# f# V% u6 L( g; L5 M  v+ Jset note (note *(exp (- (1 / k)))/ k)1 c2 N3 c  G6 w
set credibility-list (replace-item i credibility-list note)
* e4 F; C& d2 ]  K$ J& Oset i (i + 1); q! ]5 n& p; B9 N1 M
]
4 B" w. G* w0 w- g! N' B# E* o7 X; Oend
& u" a' N0 ?! [5 L4 Z. n4 w2 ^- `8 T1 V% B
to update-global-reputation-list1 ?! e* J7 g8 J; z5 ~9 L+ M
let j 0  H; ]: W3 N; @1 Y3 o: L
while[j < people]
/ O0 t- y- k4 q% C[" I; k8 h6 Q2 |" Y, ?5 I. f( v( ~4 {
let new 0* V1 f1 e% U0 [, b1 }* _
;;
暂存新的一个全局声誉
3 F( [& ]3 }6 }' C0 ?4 Q- o" M+ Mlet i 0
7 H( R/ P$ K  j6 N  Tlet sum-money 09 w  ~6 H( @- c, a$ x( c
let credibility-money 0
- Q* J( d9 }4 g8 r3 Z, P) i5 n8 _while [i < people]% H' S* Q+ q8 w3 w% h' n2 a2 u/ W! Z
[6 w/ Q5 l: n6 d, B7 z7 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 F) U- M0 t, M4 ^1 I, [" Fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ x6 ~+ k) W" M( P
set i (i + 1)
6 M+ q3 v& Q3 x* M6 X]; n6 L  U) j/ ~$ [2 e6 o- O9 E
let k 03 u3 _: h! O8 e  {2 V" E6 M
let new1 0
: y- V7 Y9 t  ?% w6 h/ G) f+ R* dwhile [k < people]  p& |' P1 b4 R9 v$ y
[
* q4 A/ E8 r9 }! t( gset 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)9 e; c$ I: v) O: V; a9 z  @
set k (k + 1)1 {7 E3 A; ^9 V3 v
]$ Z; P4 h+ C" b5 y2 ?& K
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 b! j; O! h5 A% Qset global-reputation-list (replace-item j global-reputation-list new)+ r" ^( _0 W. e- x
set j (j + 1)
3 m" x( s9 j* F' f$ q4 R! W  \1 v- j]
: j! n/ g" c( t1 i8 @: F% l: Dend
' i/ u5 k) M5 o9 _9 |
( |  ^9 {+ F  T- w% Q3 O( b7 {0 X, t) l% W

( r6 U$ e. Z8 V8 `0 e) |, ito get-color+ X% s5 w; `& P) I1 Y' b
8 _9 {0 s2 z2 M
set color blue

' Z& t! f6 g8 ^- Z1 Hend. D( b9 ]! I9 f+ k7 Y, O6 z
- u$ D( x/ m& j3 \
to poll-class
! Y* s; O% B: {8 v+ s! Fend
) W) Z: ]/ K0 K! o" j/ Y& s
- ?# O3 y' A! n) k8 H4 r" Lto setup-plot1* Z; \7 _, F, T$ Y5 \
1 G& m& p; f4 p
set-current-plot "Trends-of-Local-reputation"

  j7 t, o2 f$ o: [0 {/ Y) f" l( Z5 f* h3 b
set-plot-x-range 0 xmax
. o! N, a9 y7 G6 P1 b" s* \7 m4 _

( C/ a) l  ^0 X/ Wset-plot-y-range 0.0 ymax
9 G! z) q% g: p7 _" P
end/ R* @+ F' z" x3 \/ s8 u4 d4 A
$ @3 G' g, p- ^9 s. \
to setup-plot2% V; T. q4 T% c4 H7 g

! J2 E6 x( f$ W4 Z% g& ~set-current-plot "Trends-of-global-reputation"

9 ~2 J9 K1 d! R2 s3 k, q
) v+ g/ R. n% x7 `4 H8 Dset-plot-x-range 0 xmax

; ^% s; s9 V$ A6 U9 ]# ?* G% k* k) A9 O1 y' ?* @$ F; r" X
set-plot-y-range 0.0 ymax

6 y8 I$ x3 b: Lend% M- F5 |$ t# X; L: ^

3 b" k  X+ R) Ito setup-plot3" l/ }- @0 J5 e( K1 V

3 Y; E/ Y2 w9 W% `6 ]2 ]: X! M/ Z# ^set-current-plot "Trends-of-credibility"

1 S8 c2 f& D+ \3 u8 `2 d& N3 N0 H
* @7 K5 z/ h: l, i5 Qset-plot-x-range 0 xmax

& c5 u% A3 _+ W$ B: }; c$ F7 V/ h( V# h
set-plot-y-range 0.0 ymax
% j6 F5 g. a& U
end
0 u" x) q$ i6 R9 i( t! g
) G9 `4 K+ o! b' i$ R9 D' Rto do-plots  E$ q9 |" h9 W1 F- }7 M
set-current-plot "Trends-of-Local-reputation"
; w( K& D$ z! e( {  h+ n+ zset-current-plot-pen "Honest service"
  t* S* J  C3 @' V0 Fend5 V5 n5 ?, H3 _: U! w6 \7 ]

& D+ h8 d3 u" ~% d  F[ 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.' V! i6 B; V3 e$ S5 y1 i: f  C  ]
* {4 H" L( f8 d: A
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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