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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:: K2 y7 M& k% i( J+ _
to do-business 1 {# o2 d! @3 c! U: r
rt random 360% V, D% D4 t* p0 v
fd 1
, |8 \+ M! i& N" o' | ifelse(other turtles-here != nobody)[
5 n# m. j; i0 t2 T   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.
' G" _. W/ z0 _; u2 S# x# i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# r% f8 m+ v& |7 s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: X" R- G/ |6 [
   set [trade-record-one-len] of self length [trade-record-one] of self
  ?2 s' A2 @- [8 u   set trade-record-current( list (timer) (random money-upper-limit)). P3 C% ^! Y. A, y3 k% k
% t" h3 v' L1 z0 z
问题的提示如下:
* K9 h$ z/ E& L( n" o# F$ l* j1 [! @
* e' m( d* H( c+ {9 b  S  yerror while turtle 50 running OF in procedure DO-BUSINESS2 m7 Z! d: {: X; l; W
  called by procedure GO
8 D2 M9 C0 G# h" p6 \% F* g# uOF expected input to be a turtle agentset or turtle but got NOBODY instead.! c( _; o/ x* z# N, G0 U  o
(halted running of go). M7 G* \9 B6 `: M( r7 E
+ l# v, P$ f1 Z  ^  r$ o4 s7 \, @
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~~
4 i5 A  N/ ^) D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  P7 ^/ g4 t& I1 f
globals[
1 }- V& L, M8 Xxmax" P' ]" x! m3 U9 _; x/ ]% {
ymax
0 z: `2 u% M2 ]$ X4 [global-reputation-list9 f% ^( k' y* S0 H% e% G
  \' ?6 _% d; m2 R: _" A
;;
每一个turtle的全局声誉都存在此LIST$ G# G3 f& A7 x1 m% U1 W
credibility-list* B# s4 W9 z6 X( T$ j8 L2 c2 v
;;
每一个turtle的评价可信度2 u9 n& l( _6 |( A% R4 k( B
honest-service
3 e# z' X! p5 L, t1 yunhonest-service
8 j% R, a+ B1 P# X: loscillation
8 T- ~, j- T8 @4 wrand-dynamic
9 k" @# d9 v) v, J8 P& J, y]
) p* j- U) Z/ M
! }4 e% o3 f: q1 L+ d& Lturtles-own[5 h. v3 ?" o# u* S0 [4 ?8 q
trade-record-all
: b5 J0 |# l/ K" m4 @) |7 k$ U;;a list of lists,
trade-record-one组成% U7 l" y# k: b& M6 Q; S* K6 _2 }
trade-record-one
2 I/ O) R* K' y4 E9 o. t' v7 f;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) o  p3 y4 `: G% Z; Q2 f
% _* P1 Y9 V) S* t! s;;[
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]]! v' q9 Y( W/ b# f
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]/ x' w. C+ d, q1 A1 v; ]
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
( v7 |# {$ t: g9 Wneighbor-total
3 d& U% q2 Y8 g( z4 V5 [;;
记录该turtle的邻居节点的数目: k. q+ P! _& q* W, X, b
trade-time: t! G( `, u* n+ S9 ^
;;
当前发生交易的turtle的交易时间
% z/ ?1 V. c/ b' Oappraise-give
4 P3 w0 T; D$ S+ ^7 \+ C;;
当前发生交易时给出的评价
, p$ r" P0 u0 M' q" Qappraise-receive
0 |8 a# T" B$ V;;
当前发生交易时收到的评价* @% d  `9 V" Y4 r
appraise-time% R) S! M) ^" X2 a, [
;;
当前发生交易时的评价时间% v4 y" F; J* g5 v) H3 x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* }" M! P! C5 l8 z2 \9 U1 B4 o4 f6 I
trade-times-total
. u  }, g7 O8 a. b* }6 v1 x: x; i;;
与当前turtle的交易总次数; b& W( q! I- u8 g! Q- K- ^4 A
trade-money-total
  n; d2 V, U* w! u7 W* x;;
与当前turtle的交易总金额! i. v1 E, {6 |9 a
local-reputation3 o9 s( d$ O/ A$ Z+ R8 k
global-reputation
, ~- [" S: m6 n7 kcredibility
0 ]4 v1 K! C4 |2 H# J2 };;
评价可信度,每次交易后都需要更新+ f1 {# {  a. `7 r
credibility-all
1 r9 D* J  i: R0 m;;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
% m! W4 J* v( V( F; H' u' n# A
7 e4 q. h5 j0 C% D' J% w;;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
" R, V' b7 m* c1 s- l+ zcredibility-one7 @- b; J- M# I$ R
;;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people9 b+ h# ~8 B' ]6 _- U+ g: @
global-proportion
: g4 w* e+ U- Q' W% ^, u0 Kcustomer( Z; L4 o( x; `% {  l
customer-no
: T9 A0 `. C9 e9 e+ s$ H0 Etrust-ok% ^9 ^8 _3 u1 ^' Y. A* Y
trade-record-one-len;;trade-record-one的长度# y% v, x! z4 F( u8 F" B; o( J
]
  _2 D. b7 ~. C, G7 ?! u
# Q8 j1 f8 J% f;;setup procedure8 X3 ~% W5 @$ R
7 M  t- k! ~3 L% Q, H
to setup
6 N' ]: t) \. U  _0 _
+ p0 ~0 ?+ t5 [) X7 n+ M% S* aca

  m- k  V! x- C! N
1 X" n8 X; ]$ u6 i# T5 U3 p: f8 Linitialize-settings

" a. A% @- U$ }; k4 L' K
$ c5 j! ^) c; A" G9 [* xcrt people [setup-turtles]

# Z( |' z# ~# Y* w) y9 Q9 T' q$ {, t: Q4 T$ z" Q
reset-timer
4 R9 k1 I; W6 s, O# j/ z0 B
* O9 ~  G/ ]8 E
poll-class

2 t/ Z; }' `& Q4 O5 P2 J5 `$ z2 |/ `  y# s0 A  E# z# t/ @, _0 S
setup-plots

* z  N) S6 ^$ I$ E8 `, P$ ]+ a. `4 g, k
do-plots
% {! I/ j# g6 f8 u$ P
end
6 w& }& F) ]1 `2 f8 o/ v3 }' D$ Q; w8 L- S/ B& K* Z/ a+ N
to initialize-settings5 h! Q0 ~' z. P9 M; K2 w# }$ K

  G% l4 t& A% }5 {7 ^set global-reputation-list []
" y) c; q, z# O$ v: I
% y; G; k" s5 b. D% ^$ i1 x1 f
set credibility-list n-values people [0.5]
$ [/ R- _2 a/ S8 l
. [8 \' F& N9 k7 R
set honest-service 0

; ^0 D# C' j/ A- B) ]! z$ E& l
7 V5 |  w9 l) W% W9 I9 Rset unhonest-service 0

  T) q' B& U' z5 Y/ D2 i9 ]# N- Y
set oscillation 0
9 `9 J7 E7 }  d* a" A' r
( G1 O- e: s" i' ^) e$ Q4 L
set rand-dynamic 0
( r- \( I( x) T- ^& h
end4 N! o, D" a8 x8 o2 K* l

1 k4 ^! M" J$ _- }0 W2 Rto setup-turtles
' R1 s- M: S# d' lset shape "person"
. E* w& k! |5 lsetxy random-xcor random-ycor
! {  W" S6 l4 T: d( iset trade-record-one []+ i5 o  ]& q. J& K  I' y

' @& I6 A6 ]1 f4 j% p9 Oset trade-record-all n-values people [(list (? + 1) 0 0)]
/ Y" @- i* N9 d4 _4 z" _) p; s

" ^/ y1 U) q& Z9 a7 S+ Jset trade-record-current []
/ v: ?6 N* h* r; d2 kset credibility-receive []
( W  \/ C6 ~: t' B) Kset local-reputation 0.5  `0 Y- ?" j+ S# o  e# F3 ~
set neighbor-total 0
% _8 k" @; a( }, v& Z$ B  V+ _set trade-times-total 0' G) Q3 K9 B5 P
set trade-money-total 0
- S, K5 X% n+ c% K- T, w, c) F' b' ]set customer nobody# p& C$ D5 m- {7 G: q
set credibility-all n-values people [creat-credibility]. L5 G4 p* Y- n, f  i. B
set credibility n-values people [-1]4 {1 Q5 k8 ~# l/ [; M. U( _% D
get-color% c) _# N: x1 X/ t4 J: a

1 A: Q5 e0 M) E8 jend
3 @4 p0 Q# v; N  [: ^
6 k7 C# I4 ~9 b0 |8 lto-report creat-credibility( r% c' A9 A- _/ G
report n-values people [0.5]
( X! d* T% s; Y9 o' K/ ]+ Pend5 i* ?" [9 [8 ?# q+ x& c# ?

5 g- X. g: V* f) j) F) ^to setup-plots
% q- m5 D9 v( Q7 Q$ |$ Z" e: {3 R4 O4 a" B  }
set xmax 30
$ K& n! k: H, e% `9 B) r8 l0 W9 X7 x
8 V1 k! m5 j5 c
set ymax 1.0
$ z0 `; F6 G( ~) v4 @1 e/ u9 P
9 K1 }/ a( G  F9 U' s2 w
clear-all-plots

+ i, h  P! \2 w6 ^+ B( h! [2 o2 I! `+ f; Q
setup-plot1

# F7 [( F2 \7 X- ~+ Z* R8 m" _- X2 P  W8 N& D4 }& [! c' [2 P( r
setup-plot2
  p3 q; ?3 R" _4 b5 L, E* M

( Y% g- G5 {( ~. Qsetup-plot3
6 x" B/ d$ c* i0 p: o  y+ s/ d% `
end
0 u5 X% s4 x- S/ ?# f
$ j7 p0 I7 N. e2 @;;run time procedures
( o6 _" v/ Q# g4 @
3 L. u" {+ P! b  Cto go+ k( S! n, D! y4 b7 q

( j! a+ s! Z) }2 Oask turtles [do-business]

: m- ]% h$ ?9 ?  xend% [# K5 Q8 \. G7 [% `

/ R, ], P) K; S" ]5 g; m: Y! Fto do-business $ N+ q  T" n2 J# I7 a, v2 ]
# j+ n8 @4 b. g% r* N- K

' F) l( G, C2 @$ t/ \0 N% k9 m, F' u: V, urt random 360

  g$ y5 f! [! T6 L- a: M1 [' A0 ^. j3 k0 T9 V7 h. W; `
fd 1
1 B: t% s- c5 f0 w4 }
$ x  f  S, r0 b
ifelse(other turtles-here != nobody)[

& f) l. L( a0 S- n& Q3 X1 h" h
: r2 U5 m" v7 Q; _. V! Mset customer one-of other turtles-here
# @6 s! Z7 C$ c* f9 @% h( T

+ b5 o$ u$ i/ A& Z, j* v( Z' w2 f;; set [customer] of customer myself

9 N6 r) l8 ]9 N* @1 J% ]2 V- T0 ?9 t
# w: v" r4 V+ b/ Xset [trade-record-one] of self item (([who] of customer) - 1)3 v% L/ v5 Z  E
[trade-record-all]of self+ t0 a! u; S. c! G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 ~% F  d5 K5 F  {, x
1 D/ f# U* W( `% D5 e- }  k: Sset [trade-record-one] of customer item (([who] of self) - 1)5 {; r# V' K5 S7 c: j6 f5 ]
[trade-record-all]of customer
. ^- }) `9 m1 H# V% }

! G9 ^- ~  H3 Pset [trade-record-one-len] of self length [trade-record-one] of self

! p! t' A8 g7 U0 @7 B% }  o3 h) ]/ ^! p2 H
set trade-record-current( list (timer) (random money-upper-limit))
- A  N; j9 @8 y: Z; G
2 w; d/ Z$ i% Q$ i2 W! \8 N+ r
ask self [do-trust]
( U8 v+ i3 @& Q+ W* G;;
先求ij的信任度
7 \1 C2 J* q6 Z( t7 M
) A! U8 K* I9 s# Cif ([trust-ok] of self)- C/ Z  r, N2 K1 f4 g
;;
根据ij的信任度来决定是否与j进行交易[
! D' G4 W! J5 O" q1 jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ f+ ~0 I9 i3 e- H/ y* K$ D3 b/ J# J) {
[

9 ?& J8 a# ]: d  Q0 ?( w, k: Y0 L9 j" t5 g
do-trade
" L  R5 a2 @; s5 h5 l1 K

! Q9 j0 \, k$ g' K: ^" ?: W5 d) q: D, Oupdate-credibility-ijl

( i9 l2 j/ P. {% ?7 H. F0 n+ v9 i: A  s
update-credibility-list9 I8 ]) q! @' T1 p! T3 f

( t0 Y' D7 Z3 t) o- t5 ]* V5 `# G. y
update-global-reputation-list
& `% p0 L- \3 A$ Y# m: T, k

; L4 J$ _5 [/ W& R6 N3 Jpoll-class

2 m, \9 o( Y) B7 ?7 N$ T6 ~* U: y1 H- j9 M
get-color
$ b& ~4 x$ ?  ~" `- [$ d. @* H

+ B) j2 M8 r! q5 @7 Z0 ~( ^]]
. B( p/ V3 B; l1 N" m; @8 `( F; h& U! k; s6 T# r& G0 O
;;
如果所得的信任度满足条件,则进行交易
0 s5 k9 _( ^' I$ c" \6 p) r& Y
1 U) h  q  ~; D* y& r0 V[

+ N+ I! h6 j$ |) J  j+ }* N0 [1 o. S/ ]7 {  d4 w) b, q, h: s4 f/ q
rt random 360

& L" w8 ~6 _5 k: o2 y& {( \
/ w5 K3 R$ k: J' w8 V2 T" y2 W, Wfd 1

$ ~4 Y' n: E" B. ~2 i
$ Z! q/ P. |( K; ]8 ?]

% l+ p! y9 p3 h3 e& t
7 n; g" ]% I- }* U1 T) m/ R# H& iend

3 C9 |/ B+ v; d$ `  A; k
, F9 A9 |4 x9 r7 \to do-trust
( H  z8 F- H' `  P% D/ aset trust-ok False
" E/ L* p; F* p  n
) s& E) {+ b, K, h

/ N9 c/ \) z& x2 ~let max-trade-times 06 M  j  }, \3 Y9 c  v2 b3 \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 d' w8 B. p% W" k1 c7 h: Rlet max-trade-money 06 N) J( I: {9 V8 M: O9 \; i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, p: r1 U0 a. W  |( Ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 g, O$ ~+ D- N, B8 J3 t5 g% Z9 t6 d. {, ^8 b. [

6 j, O- F2 F0 h3 z0 aget-global-proportion$ r; b6 z+ D1 d# W6 ?
let trust-value
- Q: F* y. p# ^$ Q! g# P5 X5 ~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)

& d4 O7 e$ p) A1 m4 j9 iif(trust-value > trade-trust-value)3 g6 X( f* ], Y
[set trust-ok true]; U' t& N$ M2 _0 D. \
end* j) |: j6 y7 m, g$ p# Q+ g
2 p' o6 j) l! J' X( \) r7 ^
to get-global-proportion
- q* I  J2 z) ]* v7 t! L  Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* T* t) C( M" K" x5 {8 [[set global-proportion 0]
7 g; G; V8 [2 p/ W6 x* R8 e[let i 01 e( a: \; b0 H, m1 N
let sum-money 0
# F' i! A5 J4 q( Rwhile[ i < people]
% O+ A2 }1 g, L[! |, `6 I- E$ e+ V
if( length (item i
$ \4 L( p1 O, r: Z, f5 s[trade-record-all] of customer) > 3 )

& R' f( a* b& c( h1 ^[
7 M& a. i8 ?9 Jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 B: K2 T; h* j]
6 a# {/ z5 W1 k: d7 i]8 \/ B$ [, K9 r0 A
let j 0
) V/ z4 K4 U8 z$ s' _! e( ^let note 0+ i6 B, D& _5 ~; M. k& Z- e
while[ j < people]
8 R5 `3 F- D5 L' Z[" r2 S( A9 y2 c( f5 Y
if( length (item i
: w+ P$ N: _( u/ B6 W5 }8 o4 y[trade-record-all] of customer) > 3 )
& Q, _5 O1 W$ j" t
[
; D/ j! W" f  d# z) Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ E/ M, q+ V9 t/ G- f( h3 ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 y+ C1 I/ ?+ S6 {8 o" g: m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( K% D0 F; O! A# ]7 N: u
]& I7 c2 `2 }1 i. I  w( n
]& {0 t& t. ]- M6 _; G8 ?3 B! z5 r
set global-proportion note
7 h7 o' m) f) i7 A% b4 k' F]
  a2 T- q. @+ }end$ [1 }) G5 B( w# ~) O& o/ B

' y7 p5 R" w/ H. ]3 Jto do-trade, h$ ]( ?6 ^2 v( L% _, M# N
;;
这个过程实际上是给双方作出评价的过程
; j+ l, ]; a! M6 O5 l1 V( Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 S! R7 d& `' D* g; G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 c, p0 P! ]! y$ Eset trade-record-current lput(timer) trade-record-current
) \  u0 `3 K% @! s! f  O, c;;
评价时间
4 s* [- k, }: z$ N  h) pask myself [
1 [" [8 W. B, Z4 ?update-local-reputation* w; N, E/ l" _) e" {0 b
set trade-record-current lput([local-reputation] of myself) trade-record-current& Y& K4 C8 N! ]! j
]
1 ^  \4 ~. ^- c- O/ m: lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ W& L8 m: H  ~' l
;;
将此次交易的记录加入到trade-record-one; }) W/ |3 C' n( ^2 `/ Q' m: g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); I3 f5 `( A  h$ N
let note (item 2 trade-record-current )/ r2 s" U5 i+ i7 N. t& i* b, a1 N
set trade-record-current7 t* O" Y: B, x5 H
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ m" O7 T( L# d( I; `& {+ L  k4 A+ c
set trade-record-current
! a+ P& h7 @7 t0 B( b5 x(replace-item 3 trade-record-current note)8 v( h1 m5 {1 i# X& e
* r/ [6 s2 _$ d9 `

" f# ^1 E# n8 p3 lask customer [% e) S* i' X& c. {* Y; a3 ^; |
update-local-reputation9 m0 A  L8 M& f, G+ g+ a
set trade-record-current$ Y  r- @' J; W) W4 \8 Q+ E7 Y# x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 G7 N" m- Q! ?# l& |& [8 ?3 _& `]
8 U! ?1 l- Q! u% T% _. n2 b& `% N
8 Y% B% @3 ?2 Z" L

8 }3 v2 U9 O4 k* X5 }! hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 J, m! Z& ?0 \4 k/ X

: Q1 a- E8 c. Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" P( Y/ d! Q, L% U& v2 N, z# |;;
将此次交易的记录加入到customertrade-record-all( r$ I$ {9 ~) d- N
end
& i. R( g' m/ `8 v7 }% [1 p* b
. T7 l( g* O2 Eto update-local-reputation
' M& m  [* m* ?2 V7 R' j  H; V8 Nset [trade-record-one-len] of myself length [trade-record-one] of myself* B# A7 G: }' j: ^4 W
. y- A- p: q( G: i) B+ a  {
) G$ b: f* }" y2 E2 I
;;if [trade-record-one-len] of myself > 3
1 W$ p6 i! H) T% V$ y5 r: c
update-neighbor-total
" _8 S* j. U6 K( J. {" m) g3 k9 S;;
更新邻居节点的数目,在此进行
. J& z! J6 `, @6 J5 O5 l1 wlet i 3  H7 V+ }  c0 d. u4 M
let sum-time 0! O% o& E# f/ V; z/ B( B
while[i < [trade-record-one-len] of myself]& @" x( _5 g% y  I* o4 G3 f
[
3 {( z3 s( ^4 U6 `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 ?: k  a% g; A* o: Qset i; I" ?0 i/ P# M4 N* N/ n9 ~" A
( i + 1)

6 J6 @7 z. b3 e  l8 Q' p]
4 b5 s1 f' \/ W0 k# ^let j 3
+ s0 o; g% N1 q+ }3 ilet sum-money 0& D5 Q0 {: U. H$ O
while[j < [trade-record-one-len] of myself]: I/ U& o- b% L5 d7 \6 z# o
[( A& m" s2 u. `& T+ s0 ~  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)
+ p! Q& d# Z; a7 {( vset j1 v. O+ [4 L8 C, O: Y% @* a2 r
( j + 1)
0 q8 @! H" |3 ^3 F# Q4 ~) @
]
6 \9 f5 a: K# Z: ^1 Blet k 3
3 L1 Z- D% Z8 r0 F. Ylet power 06 |  h  L7 \. \' r
let local 0; b# }( X+ V3 }* r
while [k <[trade-record-one-len] of myself]) D- K' E2 Z: \
[
: \# Z% @" R1 x* z6 `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)
1 S! J# k. U) x( _, Vset k (k + 1)" Z7 d3 L4 B3 [4 n
]1 M* [+ e+ \, [9 y+ p2 y7 m
set [local-reputation] of myself (local)6 v0 [" {7 O- w) s- c% [
end
& p4 x  e. I, R
9 X; m4 b6 E% Y0 h" B# \to update-neighbor-total
4 F) {  v( [7 c- Y7 N7 x! a9 `
1 ?0 n& i" |3 P+ ~! i  fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& {, X6 i; [: e9 J# d
# w  ^1 H; H* {+ Q& D
0 R# T' n- l' G5 a9 h* o/ N
end
! k4 b( L# }: `* a* G; F/ I8 r# s
, I) S3 T, ?8 w- P  C' wto update-credibility-ijl
" S3 y+ T3 O* D, j
. o8 f  Q; S* E5 g, d;;
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。7 n5 y! G# S5 C! b6 J: h
let l 0
  k  O0 {. h6 J; p$ iwhile[ l < people ]
) C) d* g5 v- ~3 H;;
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& g, s( Y) b# E& G
[+ ?! d; A& l8 `* @  }8 x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): q5 W% i) P9 A% `) h, R
if (trade-record-one-j-l-len > 3)
( U( N5 Z. F6 e5 c[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+ G+ R, y" }2 b$ A0 d3 v, P
let i 3. t* B. u  Z4 J$ M
let sum-time 0+ U0 z7 I# }0 ~8 C3 `
while[i < trade-record-one-len]6 V& d% i  Q4 h: N+ _! u
[
8 Y2 X7 D! ^+ S9 g; \* Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); m% e0 m6 ?8 p4 _% v$ g* g3 v
set i& J+ T: q: ~. B8 N* g2 L, ^  Y7 w
( i + 1)

, j4 {* b/ {" {% t. ?* @]7 A2 ^- g2 o' @" }8 M+ I1 D, Z! f/ g
let credibility-i-j-l 0, P) a# I8 K, C& R& Y& K
;;i
评价(jjl的评价)
3 E+ v% [' K0 _! clet j 3, L6 c/ p+ w8 P
let k 4' I, t* x* ?) @0 Y
while[j < trade-record-one-len]( }$ y5 z4 ~+ }% @; x
[  l* r- ]/ g0 h' }
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
( F* F. J1 k' E( ~+ o4 A4 w3 F% Dset 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)  z$ R  {9 N: z/ M! a% o2 t& B& J+ r
set j
& v/ y1 y' h" }) m$ A: z: T5 F/ W4 W+ b8 d( j + 1)
' u: P1 f7 `: P+ I4 l# _
]4 F9 m! w3 @( M0 u/ V& L6 Q
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 ))
9 k- i% c; I3 K" S' T1 _
3 p9 V6 l) Z; s6 D0 k

% B$ K3 @& r7 x- F" }' K% `5 Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ Z; K8 F- |8 v' D
;;
及时更新il的评价质量的评价
" P6 W) `6 u, Q+ \% mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ }$ R9 u- Z: s5 @% E2 b) ^2 Q& W
set l (l + 1)/ R- H# k0 {( a; q& Y* h+ r: `
]1 v) \/ M/ j2 {. x. a' y1 ~; @
end
" V: T% @' \3 T9 t4 G& ^. h# ~& U
to update-credibility-list' s: ^& e; y% z- i( f6 _& V
let i 0( W. O+ F  y9 ~
while[i < people], x, t; q( Z: w  @1 O1 M5 q+ l+ `
[
* A  k' _( f3 C' C; E3 a( F% r) ^let j 0
6 G4 K: l* S* X& [' Glet note 0
* T/ J% `+ j( \% D+ }let k 0
  k4 q  A4 L/ `5 d/ z: A;;
计作出过评价的邻居节点的数目: I# U! ^2 z/ q, S) F
while[j < people]
7 I+ H7 ^: G: b1 Q5 ~" k5 j[4 u. N3 {" K( R+ R. Q
if (item j( [credibility] of turtle (i + 1)) != -1)
, T7 X" _0 ^/ h+ w;;
判断是否给本turtle的评价质量做出过评价的节点
1 D4 P+ H1 L. j/ A+ ][set note (note + item j ([credibility]of turtle (i + 1)))
( e, }* q+ e' {1 v+ F;;*(exp (-(people - 2)))/(people - 2))]
- N4 i: F  ^/ ^. \
set k (k + 1)) A9 t. ]$ B' E# S6 ^1 m
]# }, z! |/ z" h. X- F
set j (j + 1)5 O' Z8 f. W3 f- ]8 C5 S
]! f- J1 u  s/ k
set note (note *(exp (- (1 / k)))/ k)
+ s8 C. R" z& Y1 V  kset credibility-list (replace-item i credibility-list note)/ [, U$ n; v$ |' b1 K) @. ]
set i (i + 1)
' I. ?+ x1 J* s* N" D! Z]
9 r! n% u, L. V7 g8 ^end( I0 I* j4 ]. k6 ^: ~- U
6 f7 S- g6 M* c8 Z8 a" [
to update-global-reputation-list  L- l% Q' d) U* m6 g+ Y) [9 x
let j 0
3 a- Q; v5 K9 p* G. Cwhile[j < people]6 S5 p' T4 e; G2 a4 E8 Q! u/ o
[
$ I/ k; S' _9 ?2 G3 [4 Elet new 08 L$ {5 ^& _' a+ k4 F
;;
暂存新的一个全局声誉
2 t$ }! x$ o- Glet i 0- m" u. t( t) n. F, r  q. J7 v
let sum-money 0# q8 b8 z( T5 s0 U
let credibility-money 0% v. x8 [8 p9 ], c1 a8 y
while [i < people]' e2 G- o! H* a5 I4 l
[$ |7 m7 p3 u$ a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& v6 n! i6 ~' w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  `; H' _4 {' \8 D/ Pset i (i + 1)" \2 P: T0 M, ?. m0 D
]$ x$ c5 g6 N7 D1 O2 ?
let k 0( N% A0 N7 |4 v4 d
let new1 07 s* }$ M$ ]: C# d
while [k < people]
6 o0 b# t. a  o[: ?4 v# e2 B6 ?* b  k
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 Y& y* R- y: r3 mset k (k + 1). a0 E- H4 l4 ?4 P* Q
]
" ~# v* n! X7 Oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! O! c9 s7 \9 e1 y1 ^0 F
set global-reputation-list (replace-item j global-reputation-list new)
+ d) W+ l, B% gset j (j + 1)
! F& n+ a; h. S6 Q8 {! o/ b; t  e4 j+ i]6 H* e4 o3 o( ?- J, m1 f
end
. e8 V8 ~$ l: }5 P! `3 r. n* j3 D9 a1 c# o4 a
) r' Z! F: ~6 l* Q9 {( @

) N! C% D9 W# f) d- G" i# ~' Ito get-color# o2 [8 T8 s3 }
$ h. C; H6 ?  V& i6 u" g8 l
set color blue
8 N$ N; T+ n" ^$ F3 s0 }# W
end; }/ M4 q( Q6 u8 x
+ V/ S/ H+ \+ w- z8 w
to poll-class: V+ U" P5 s3 }9 ?
end' G0 k2 {9 B% J; W0 _, [

  @; k- d+ P+ j! t* @/ _to setup-plot1! g, S# M* ?9 P  w

- `0 }! p, ?* s4 C- X4 x4 P3 C1 hset-current-plot "Trends-of-Local-reputation"

2 G5 B( L2 s  z' o- |+ X9 ]1 @. V8 F& w; D, [0 f, ~+ `4 X
set-plot-x-range 0 xmax
, }) ]/ X% A6 ?, F1 n! Q
, g0 t$ u+ A1 z7 N* l' J
set-plot-y-range 0.0 ymax

- O& C7 v1 w' Aend
; t  P; V( h: Y' ^4 a9 W/ ]5 j' |. i" z) K, v7 t' M
to setup-plot2
. s( k$ a4 [. Q3 [2 S0 X" k- ~4 g* N: d& G( F9 i! d
set-current-plot "Trends-of-global-reputation"

/ z5 e/ r( c, k5 n: p& ^" G  J1 `  c- z: ?; `7 x& e* }
set-plot-x-range 0 xmax

  u% \/ g9 o, i0 r$ a7 G3 ~
( P) c9 A$ M3 J# C; S' `set-plot-y-range 0.0 ymax
2 ]) U& c1 V% F! a" W1 ]
end
  g% A2 u. A3 E! x! k1 U0 }! {* H' m7 C8 u% B; [4 f
to setup-plot3( g' N) u" n% [7 R( z; g

  g: b. t' }# _2 rset-current-plot "Trends-of-credibility"

; e8 ?. ^1 Q! U
3 E; Y7 x5 S9 I8 {" Bset-plot-x-range 0 xmax
7 _  L$ h# e4 ^+ O$ R! I
4 b4 ~/ S2 _" u9 X
set-plot-y-range 0.0 ymax

( m) I) G0 W2 Tend
2 X- K7 [5 ~, O9 q  V( s# ?9 Y8 M' U3 s
to do-plots
4 I8 `! U! P: _* c* O8 y  lset-current-plot "Trends-of-Local-reputation"
0 A+ }& I: x  f  X, ?# }( Rset-current-plot-pen "Honest service"
) _& B- l: K' S- oend
  R/ j  \% f( o: B* p, {) w
% s. y% g' K0 d[ 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.
  |5 v6 s4 d4 o0 Q4 D2 i# G$ M: t: C7 _) d. 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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