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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:
, d% s" e- u6 Bto do-business - ~9 i3 C& V- v# w1 P, |* d
rt random 360
* G8 B" R& Y* r5 r7 ^" q* | fd 1. ~' U8 k: P4 x' O
ifelse(other turtles-here != nobody)[1 |1 G3 L7 |0 |0 n
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
. u( U; Q% ?# p7 }) ?! g1 B0 @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' {1 f$ W. R  v  n/ C
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 B. M6 E( g2 s! S
   set [trade-record-one-len] of self length [trade-record-one] of self0 s# |/ H0 |# U: N7 y% j* N) X
   set trade-record-current( list (timer) (random money-upper-limit))
/ V8 f8 U' y3 N* p) S2 R/ [( n. |) L6 d- O" f" I
问题的提示如下:
$ K/ j/ _) Y! ?! {8 _4 U- X- W3 P0 l# ?% {% ?
error while turtle 50 running OF in procedure DO-BUSINESS
2 I2 @+ w* R6 k, i! R+ c4 E  called by procedure GO1 l: ]- f+ J7 x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' P" [& z: H' D
(halted running of go)# C# e9 z  D' w; i) t# @0 g

" {: E8 z( v; g4 H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 _3 O, l% @( Q
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3 v2 A5 b8 F$ R7 ~
globals[
, b0 v. q% m9 Gxmax
5 q" b; l3 Z- |; G3 eymax! o) t( ]' m/ m& U* K
global-reputation-list4 @# O  b- R  ?9 H

2 ~( W0 [: @9 X# ^, z9 F; Y;;
每一个turtle的全局声誉都存在此LIST
1 m2 T& B8 N0 Y5 T6 F  M& w8 W( @credibility-list
, _( b5 |; c) {;;
每一个turtle的评价可信度2 }0 |$ e: o- \% t5 m& d# K6 n
honest-service; Q, T- B5 l" `+ |8 B  R
unhonest-service
1 t+ k6 {$ w2 a' S6 M+ B% w4 m  {oscillation
. k' U) T2 W+ N5 j6 @- x" c( ?rand-dynamic
9 u; a" I, {1 q8 f  h7 L]
4 E" h+ s4 T; b- e. B8 W  N) ~9 M6 G- s
turtles-own[/ Z- w5 g4 j: Z9 A# W! M
trade-record-all
5 z1 D1 C4 s  r6 r) k: l7 R) g  J;;a list of lists,
trade-record-one组成
6 t3 n: C2 R2 N) ~3 Gtrade-record-one
6 [! Z; Q  l1 |9 I;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( x/ n* ?5 o$ p( X7 H7 m1 [7 P4 h
* D! f  `' w0 G) x. X) _1 E" N) q
;;[
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]]% j! B) A0 p# N- ]- ~
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]
: l  {" N" r' |) J  t; Qcredibility-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
# v/ g; X6 k8 \8 g% }! b7 z1 Z* lneighbor-total
" V( O5 x" q5 _) P;;
记录该turtle的邻居节点的数目
4 _  o. \: K8 z, s/ ctrade-time
; q4 t7 S: u0 ]; B$ G;;
当前发生交易的turtle的交易时间
0 d  Z  z2 G3 Rappraise-give6 }# d0 l$ }9 a8 u5 y% [, C0 ]
;;
当前发生交易时给出的评价$ C1 S8 g2 ?, T0 B9 d9 G; @
appraise-receive) ?7 b& F4 X+ w2 o
;;
当前发生交易时收到的评价# s7 p; E  \  t- f
appraise-time
- w( W2 J. ^2 C" ?3 l7 R: N;;
当前发生交易时的评价时间% }; u" Y" x6 Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 y; _. E& r# m; s. k# i. W# {
trade-times-total
# D2 F& P9 L# J4 ~8 r! `;;
与当前turtle的交易总次数$ S$ J% W/ J4 N* J3 r. `
trade-money-total
+ m) L' [% r, C3 z% H* b;;
与当前turtle的交易总金额
* a3 y. m2 L: A( Zlocal-reputation
. n  F. L' Z, M" dglobal-reputation
, A9 k/ U3 o0 {' l6 a3 g5 N+ ncredibility
' G4 n1 {8 L' S" W; D;;
评价可信度,每次交易后都需要更新
7 o/ i- C  z& M5 l& @$ Xcredibility-all
+ m- p* j. x; c4 @9 E;;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; k; K; q# T  a2 P7 j" W/ Q

! H: y7 \5 C. p! t' ~;;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
) c1 c( _, p* jcredibility-one
% o. N& Q2 G! b% _5 q4 F, e4 G;;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
3 j) A  b; i. N6 n1 _# R3 Wglobal-proportion
% u2 [4 Q2 l1 o$ n) Z8 ?customer: O' Y$ r- E, y; O" s$ k. X
customer-no' i* S3 U+ d  V; {9 E
trust-ok
9 r5 {4 @* I+ l- O  X3 J1 e( xtrade-record-one-len;;trade-record-one的长度
- x5 p  q  |3 O) \8 w, h]
* [# Z' ]' E. i' x" g$ h
- r7 y" R  d' e+ H9 T;;setup procedure
2 n* p. x5 E: |. s/ a1 O
' [& U4 m, }& k% j7 s; |to setup
* l+ V' S: m4 h8 o" i2 N2 e6 \* h3 T4 F3 |6 }' h3 t" h4 R. z: {
ca
3 n9 l$ f: h+ H7 k

- M6 |0 [/ Q7 e0 Q! a; }  b; M2 pinitialize-settings

; x3 p$ B  A& A1 w8 g; @
4 \+ g" B+ m% D* i0 J+ E$ ccrt people [setup-turtles]

, ^1 `# x0 w4 C, Q' b+ @. c
( k% d  x* n3 S( c! }reset-timer
0 {# j" J- y4 k1 @/ x7 B! Z: G+ Y

6 `* x7 G8 i7 ?4 }: |! apoll-class

$ W' _+ f* S, R0 f( d, l' X3 M! b7 Z! C. h6 Z' L1 C& B1 r
setup-plots
' d0 h4 |; @1 B$ O4 A2 y
# V+ Z9 ?" i0 O, R/ ]# J% D8 S
do-plots
" V3 v- d  D# b, r! T
end
8 S* a8 n+ a9 h/ V% H- `1 X/ \0 h( P& k2 S7 _$ q8 `
to initialize-settings
$ \! d) ~; X7 k0 B7 t; L) h  e/ B% y) G& n3 Z
set global-reputation-list []

/ D4 L; [, Q9 G8 T; Z1 }
3 m) N8 f* ~) O. F7 `* p! {set credibility-list n-values people [0.5]
1 _7 M$ B2 ~  S9 g' ~

5 C: s' L* c! H* _set honest-service 0
$ z) l, ^3 d1 C5 c

9 o. c* J2 |% yset unhonest-service 0
! x+ ^7 F( f* C( v8 m; w0 n4 M5 w

$ C* l8 {5 @5 I4 [! f7 oset oscillation 0

# U; |9 e1 M1 m9 j6 F+ z' `4 P+ t* @1 ~5 a
set rand-dynamic 0
- W3 A: b: H* ~# E% C" c- T
end
9 m6 f9 ?* K" z* x1 f& Y7 D0 j
# K8 z. \8 x7 N4 B0 G, d, Nto setup-turtles
! O( ^9 N, U8 Y+ L, B8 uset shape "person"( M& f* ]$ V, S/ k* `  M/ K
setxy random-xcor random-ycor3 t: @& f- y7 w  Q
set trade-record-one []
" A) p, z5 e' b5 n  F# Q, K) K2 t. X% f
: X0 L5 |( z4 c. E+ U
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 u( u- f( m4 @. I) T, D) ^& v
3 ~6 }6 y& ]* C: p
set trade-record-current []6 c) S* G1 W- k; X' O/ w$ U7 T, `
set credibility-receive []
9 ~" O& a2 z& {, }5 X: Mset local-reputation 0.5# m2 ]' }! ~8 M% I( Z
set neighbor-total 0
. X7 E9 o+ C4 ~, m4 `( B0 `% V. {set trade-times-total 0
( S$ Z( Q& h- Z" h5 A( xset trade-money-total 08 _1 A7 x- c  s% j
set customer nobody) b/ n' i# n+ R. E
set credibility-all n-values people [creat-credibility]
$ ?* ^  i) z! ^3 rset credibility n-values people [-1]
3 R+ Z  B9 o% n. fget-color
% y7 V* l2 N3 W' L5 L- x" ?6 n5 e

3 A2 y2 T3 T4 F# g5 r7 Oend
9 k6 T0 i: q6 A5 `9 k2 g3 _- A& }. E: m3 J. l5 v( P; w
to-report creat-credibility' [, F* s6 F( O4 E- c9 w9 R& Q
report n-values people [0.5]% h8 f2 Q" r  b5 F. \
end
) q2 W  ]4 |% i- w
9 Z3 X, o/ b; vto setup-plots. W/ V' D2 i5 M7 S" V& D

; ^3 Z& E9 J4 I) {- s2 Z+ Zset xmax 30
# t+ i* E+ B( M6 ?5 r
; s1 m! {; W. m* c
set ymax 1.0
: A8 l' j) m2 n# U( h2 i6 ^, m- _
5 t: ]0 t- |5 d( i
clear-all-plots
" S6 r4 ^* x. Q- E

; x4 }. \% _  O2 ?. |2 Y! }setup-plot1
0 S% i' l9 O5 L5 R3 O) b

8 K) W' f0 H! B6 J3 X+ ]% jsetup-plot2

4 C" ~$ Z3 ]+ I0 ~( X, z0 R. T& H- p
setup-plot3
3 a3 F# i8 Q7 R( b& \) r9 n# V
end. }; a* y' V; T+ I: Y; g; z. N
2 z  u( z' w3 Q
;;run time procedures
% A3 x1 @( m6 C3 B' d( l) s8 A
4 ]4 A: X8 F2 T7 G6 Tto go7 w6 U" K, Z5 b! O; j7 B
) f6 Y5 u# M7 L
ask turtles [do-business]

" ~5 n" E) P, n- k$ g5 s0 z. }9 ]end8 a8 C/ d0 M7 ?8 K$ S

: G" i) J6 q7 \) {to do-business * B. j8 m; @2 l8 }  K
1 l# }. l# }( {3 G

, H" ?& G. B) @1 Wrt random 360

$ m0 M4 Y6 r; }" a" e5 ^
- G- |2 F+ H2 w6 s$ a6 mfd 1
5 X! e# }! ]: t  ]! l2 x

0 V/ Q$ R  ^, ^ifelse(other turtles-here != nobody)[

: U7 i0 J& R( f" c, [% b: X! H* b" Q+ Q; ?* J9 P/ s5 C! Z
set customer one-of other turtles-here

# m0 O* G( e7 ?" v0 P5 B+ b1 {, n9 C' ]: i- D9 m" Y, |" P1 T
;; set [customer] of customer myself
7 _& L6 P4 m: y+ G
; V4 F' t  b" R! O2 W7 P
set [trade-record-one] of self item (([who] of customer) - 1)% y) w8 X3 M! N7 o
[trade-record-all]of self
4 T2 Q5 X8 \" N8 g! k1 g$ g) q  l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 B: R1 k1 P" u) [4 |, c
. B8 f# O' B. o) r5 x
set [trade-record-one] of customer item (([who] of self) - 1)
$ l# \. C& ^, `+ s/ d[trade-record-all]of customer
% N$ v3 l. ]& h$ K) p
# a3 ?  }0 O6 w/ x" U- Y
set [trade-record-one-len] of self length [trade-record-one] of self
& N+ K) _- I4 Z6 {+ w; q
4 y- U8 i2 I9 N7 [' Q' N5 m
set trade-record-current( list (timer) (random money-upper-limit))
8 _$ w; S& U; k1 {9 a4 N

8 b9 h* l2 R6 u: c% task self [do-trust]
% U( d/ |; X9 @9 ~; M) ]1 p;;
先求ij的信任度( B8 D! n* C: i7 g
2 M1 c6 V9 y" H
if ([trust-ok] of self)
0 ~. W9 D& i) @; e" ~5 _. U;;
根据ij的信任度来决定是否与j进行交易[; V8 E$ I7 G! x* \% t$ h- Z+ j" w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# i; }, B3 Q  K7 l2 i5 v9 \  X
, A- V) ?/ u7 j/ R
[

; X- e3 l" N- i: l' T6 ]) E3 T$ C5 b: Y, X
do-trade
7 {0 |# a& b. ^0 V  k
! e8 U. V  L( @3 o' U+ }  V
update-credibility-ijl

2 g4 k9 `) j; ]$ ~2 L! i
3 _: C3 V! z2 `: A2 `8 Eupdate-credibility-list
7 {5 N" G- D/ J4 Q* T2 n

/ W3 K2 K. u& r6 x! ^6 s2 C: C9 e  ~% O
update-global-reputation-list

5 O1 h1 O7 r" w% E$ r0 a8 T+ M' P! c$ t" R% i: V# j3 ~2 q# d
poll-class
9 R: k0 D+ i" h3 a
4 h) {' S/ J. u8 ~0 F" _% E
get-color
/ g6 t$ \) v1 L8 T  C5 E
9 X  V* x3 n0 j
]]0 L3 p) ?4 n8 g4 [( g
2 T5 h- j0 X8 K" o  W! T% l
;;
如果所得的信任度满足条件,则进行交易
& b  ^4 S% b- t. m( Y
8 ?- {$ H+ C0 ]# z" r+ c. {[
' e7 L4 W7 r. |! o- `

% \0 n1 H( T+ z6 v/ s; Grt random 360

8 p! a5 @: ~# Q7 o+ G
; G) [* P! h- Rfd 1

9 d% x8 P, _1 {8 U
0 n2 i* ^' b" |]

+ h$ J% E8 V4 |) ^3 }) W1 i; R" w0 |8 {8 {5 A8 F, g9 a' i
end

! p! L  x7 L: v) p* C
* C: Z5 H# R: H/ f& ato do-trust
) O- Y% \9 n3 A4 h! e: d0 dset trust-ok False
; u1 r& \, T* k% ]1 p  X* H
# F' C6 m% z/ c
; l" w! e/ S9 ?
let max-trade-times 0
, l' i! \2 n4 Z* [5 Z5 Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* l- v, m' W3 j! Q- T
let max-trade-money 0
- O* F: B, X3 O# X1 dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, K5 R# {. c$ |" dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ ~0 L6 d9 Q, s. q

$ e% O9 ~. U% D' W4 `$ d0 z
+ }1 w0 S# W2 u; N
get-global-proportion
2 l) ?; h: U2 W1 \/ H# _let trust-value$ k# V6 }' b% \, |! d
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)
! B( t( u: e" f+ u( x
if(trust-value > trade-trust-value), k  `' x% |$ Y( Z- U2 M3 Z: i" ]
[set trust-ok true]3 |; }( P1 z' N$ z
end
8 U- @9 x) s6 J; ?; H
$ [; a$ K7 I: {+ G- @to get-global-proportion, L* c* \+ I: Q# _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  o: \9 v' z. @5 z7 y
[set global-proportion 0]6 M# l9 o; d. e, J# o: z$ e4 L
[let i 0
4 q8 {( Q8 Q5 J$ f9 `3 wlet sum-money 0
# `" g) f5 ?5 J- H' Bwhile[ i < people]) r- w! b. R7 o- e7 q& E
[
' {) B* Q1 \3 y9 b2 ^if( length (item i' V: [/ ]" l: s7 m/ [' ~4 x
[trade-record-all] of customer) > 3 )

7 X* a6 h, K) f: Q& Z! z[
" l3 E( M; S0 }. k, G4 Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ s# q% h0 F( \$ J9 O]
# Y+ \, N. H  w% H) X]2 ^) [- d/ j/ \: a% J) A3 a
let j 0. p! T- f. _7 z5 q
let note 0
3 h+ r4 w+ q7 h8 u  Owhile[ j < people]; k: |2 d6 [$ I6 N# G4 ~# S- P
[
! ~1 z( B( X' X* t" Iif( length (item i: _+ B. `5 ?& {0 U+ i
[trade-record-all] of customer) > 3 )

9 q0 e; `, A* n, p1 W% E9 m1 A8 Q[
3 a) f, A. N7 u$ G/ f+ y* w: Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% t3 j, X1 N: t3 w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 Y' m# ]+ \9 s! Y0 X5 ^, p[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& ~* Y; z' q* m& C$ t
]
8 t  m1 C$ b0 v+ T]
: V; g4 q  L  g, Pset global-proportion note
& Y. ~7 C# n2 o# g& Y& `3 X]
/ h1 C$ I# ~. ^; Cend
" ?$ d; }' f) ]; g
: Z3 p7 |$ F6 o; `6 f% mto do-trade
) |8 S! Z$ `- P6 q: \% K2 E;;
这个过程实际上是给双方作出评价的过程
  p, M- J1 ?8 t2 Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( V; y9 ~# J8 o( }9 e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. E  F$ J7 \& o& g3 L, N
set trade-record-current lput(timer) trade-record-current: ^, L5 K5 q1 b; G) K! C
;;
评价时间  n* K+ T6 j! I
ask myself [
& q4 @1 y0 e; U2 cupdate-local-reputation5 ]" O) ~9 x9 G
set trade-record-current lput([local-reputation] of myself) trade-record-current0 {9 O9 u9 P+ l* O, q
]
0 r6 W  G, {5 m- L. `$ S2 }2 n/ R8 f( Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% K! ]5 u% f5 }; `9 }
;;
将此次交易的记录加入到trade-record-one; N+ j! A. I2 V. i1 y& `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ ~1 I( h* t  n! blet note (item 2 trade-record-current )
1 t$ E! p% f5 }- [  Fset trade-record-current3 E: ~& A6 i' C/ Y9 {, U
(replace-item 2 trade-record-current (item 3 trade-record-current))
  _5 T  Z8 {( I
set trade-record-current$ M. ^, O. ^. Y' a2 r+ d/ f
(replace-item 3 trade-record-current note)
% ?& n8 r/ A: ?
9 c0 F  \1 o$ D, O! J) b/ N

3 H- ^* }2 Q0 k& V  qask customer [: V7 O7 g% z/ w' a% r. L6 Z; I
update-local-reputation& e' x" i; t0 B( g& n- ^/ g" M
set trade-record-current
6 o  V# K# r) G1 [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! G& D; h2 {! B
]
) t5 Y( R$ _' K: h" q
7 j. R' z; Q! v* g
1 \" z6 ]; _( V, j; x+ @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% z, }' e$ e$ p9 s3 V% Y

) c9 I" w* I# C& Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 {  y4 i5 ]& C4 X% _& l
;;
将此次交易的记录加入到customertrade-record-all7 q5 U4 B- U6 |# W  ?
end2 V, ?9 X; c  W& w

' L5 z6 f% S* \# xto update-local-reputation7 \0 Q+ a- [0 k3 w8 X( y3 R7 j
set [trade-record-one-len] of myself length [trade-record-one] of myself" E  Q1 W" |9 j  [

1 s' s/ U+ A. y9 \) a2 H) E! I
, E. n9 W# d2 i4 w;;if [trade-record-one-len] of myself > 3

% {# G5 H) Q& A- C" Nupdate-neighbor-total
0 Q5 F5 c4 _" t& _$ j6 n. u' i;;
更新邻居节点的数目,在此进行
% P; e9 z: l5 ?/ glet i 3
. m, A1 y7 g3 y0 O7 Mlet sum-time 0% ^" D# I& D& Y2 _
while[i < [trade-record-one-len] of myself]& t+ e. K7 h5 V3 d3 q- z0 U: p
[
: A- F4 Z) }6 D! Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 f# g# x# b/ q% H" s" p0 {set i
' s) l3 T: e1 a$ p% C; g( i + 1)

4 J9 F1 G. H6 O( k% [7 h5 S. m]
9 K* Y8 ?# Q; b9 g+ b3 hlet j 3
% h1 C% a7 i4 w0 |let sum-money 0
# K* B: ]) @7 P8 ?5 dwhile[j < [trade-record-one-len] of myself]
1 X/ J) @+ N6 @* M# [  H[
0 X0 ]. B) z* L" J8 m) a" P8 l8 m! jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
& n0 A) Q1 e* y5 ]set j
+ N: l* \' P) b& T6 I9 l' _7 R& ?( j + 1)

1 `- s4 `8 S8 ^* H! x/ p! @1 W/ H7 F]9 q5 e' w: X+ f8 c& K0 ?$ S9 V" b: w
let k 3
# a3 N* d. E& W4 `- s  w: wlet power 07 g; t6 |$ a( `& N, s, N) }2 ^
let local 06 D2 ~% e2 A& S- {1 E2 w
while [k <[trade-record-one-len] of myself]
% z/ {: B6 f9 x6 b' s[) V( a3 q$ m; @; f# t4 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) $ g+ G$ Y1 o& a' z( X0 z
set k (k + 1)0 T' H. J( W- `( d, v" j, Y$ N- G
]
" E! X& w& `1 W8 [* s! V& jset [local-reputation] of myself (local)
( g: O# ^; j$ H- S- Kend
/ Q2 |8 m3 a: t! z
; _& t+ \) G8 r1 Z0 `  Eto update-neighbor-total/ L' ^7 Q. G$ A9 c
8 Q5 m4 F- m0 o. S; R& q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 E9 U# M6 I' N3 v) J% ^/ G# O- i& w( J  b7 J& ]* U

3 V0 {) O- s( V3 ~' ~end# G8 _9 I/ |' Z/ K
5 D- R2 b3 V0 j5 \
to update-credibility-ijl ' Y0 z8 F+ f5 ~( H
  N7 b/ N% L' o6 s- ?& ~5 n
;;
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。1 @& ~% C. i* O) m( o; s. `
let l 06 @6 s" D7 Z  H6 u3 J4 m, {5 L# P
while[ l < people ]
+ \5 Q, b7 v4 ~( b. x;;
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
/ B4 n2 F# v7 A( w[
* U% O* `4 F; u- P( f' Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 Z, ?" f: W, B  u! `( Tif (trade-record-one-j-l-len > 3)
% r/ J; A/ n# ~7 I4 d; k/ R[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/ C) B& l/ R. s9 W2 x
let i 3
% p$ [" L( q, D4 V2 U& vlet sum-time 0
4 I$ ]6 J, ^- I6 x  awhile[i < trade-record-one-len]  }8 W2 G# l8 s, j7 `! P
[
1 b3 f8 n' a" U3 E) xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" P# Q* r, d7 B6 r3 [  }- U6 b. ^3 r% Yset i
% p) K( M( h! w" U( i + 1)
. g  |- m: s1 N# }& k  x
]
; @8 r: q$ C# I) c' k2 clet credibility-i-j-l 06 ~: V% E( a: G! i1 T
;;i
评价(jjl的评价); _0 f4 p- E" b
let j 3
* x% [: q0 i1 ^& ^3 O% y& flet k 42 Y! p/ T$ e3 Q( L
while[j < trade-record-one-len]. y4 Q  L$ L" K, v1 [) O, I
[, u4 b" w8 U( W6 Z6 @
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
1 p" e- B1 F: ]8 R: K& Y7 ]; `set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
/ |# \2 O, x( l' }/ Iset j
0 [0 x* v- n! c' g- [4 q( j + 1)
! L2 C2 T6 ^" P6 `8 W
]
0 t6 `: `) \% {# q2 G' \% p6 N7 |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 H5 u: k6 ]7 G/ U) h! k0 L% D5 Q6 \; |: c

( r- r# y1 m/ o3 W3 x6 {  Plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 A9 Q9 S: a8 j! y6 i/ S1 [7 Q1 _4 o;;
及时更新il的评价质量的评价- J& N3 J8 H3 `/ I5 X
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  c4 n. w4 {" J+ R% R) z
set l (l + 1)
7 t- G+ A, q# d- I]- x. n; s' u/ z8 j% z
end, p+ O: _# q. W# F7 o
7 O4 e: A/ Q: m( L& R" w; D( Z
to update-credibility-list$ q% M' B# J) r
let i 03 c) g4 i+ _, t, h% [
while[i < people]
4 ~3 W: g: ]$ @! [' L# f[, ?; y  R% [& B: j
let j 0
7 q) m& Y6 ^& V  `, olet note 0+ N; i. @) C7 E4 _/ w
let k 0
  p8 u9 O1 L$ u* };;
计作出过评价的邻居节点的数目6 O; A+ Z5 s7 Q" T
while[j < people]/ [5 v8 u4 t* O2 i% N  R" V
[' w5 Q* v* \9 C! S3 Y0 A4 u
if (item j( [credibility] of turtle (i + 1)) != -1)7 q5 R' A* W+ _. U) c
;;
判断是否给本turtle的评价质量做出过评价的节点0 \+ y2 Q6 B3 w0 s2 V5 O: v
[set note (note + item j ([credibility]of turtle (i + 1)))
9 o; ^, Y2 j! I( ^;;*(exp (-(people - 2)))/(people - 2))]

* r% u7 U* \) q1 Nset k (k + 1)
3 ]3 o* u. R8 S; P8 I], g+ c: S( s+ ^  }+ H% b5 g$ T7 c
set j (j + 1)
/ @; h" j4 d. s6 _]
8 |5 r  d7 v/ B) [) m. \9 {set note (note *(exp (- (1 / k)))/ k)* k5 R7 g* i. u, E
set credibility-list (replace-item i credibility-list note)) S3 m( ^3 ~0 a- ^- m4 I
set i (i + 1)6 |2 D0 L: o' E7 [
]
- {% I+ q. O# w" Hend7 x3 M; }: }- ?( K5 k, r: J. ^* T7 p

0 G: C/ E& ~  L7 q9 ato update-global-reputation-list
* O9 d/ D8 H5 z9 l9 @% rlet j 0
1 I& p4 v1 e* g/ w' q  Wwhile[j < people]: |3 a. W$ z; V; b% s8 Q
[
, W9 J7 g: K$ `9 W9 Ilet new 0) V+ x- n6 J# B5 W: z4 S9 }
;;
暂存新的一个全局声誉
# [, K! v$ V$ v2 q4 E8 Mlet i 07 `1 I' Y# B4 L) w
let sum-money 0
$ ]/ N2 B6 a4 A5 k( n  ]( n, r3 llet credibility-money 0
5 B( ], B' _1 u2 b- B# M9 rwhile [i < people]% A8 i- _. u5 s! A1 `2 C" w
[
1 c6 Z1 x. Q. |* Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 t2 j, y+ b- M4 c5 `3 I  v; Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 D) s( D+ d- q) [# bset i (i + 1): u3 o$ y7 |3 s# A) Y. j
]
1 g4 i/ |4 _% vlet k 04 {- f7 V( r$ N. T1 s2 z
let new1 0' w) [8 ?% v$ t! X( \6 x
while [k < people]- d& y( E7 f  w& |$ `! w3 @
[2 R9 O! P; d% ~* w7 M, X
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)
" V8 D9 ~1 V9 Qset k (k + 1)! M4 M) r+ }% r5 Z" n' e
]
; A% e) Y3 D$ ?9 v% _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' p! e; [, n. g+ }set global-reputation-list (replace-item j global-reputation-list new)
) L  {6 \) G8 r' k5 v& jset j (j + 1)
2 ]" {$ a' N$ }; I( ]2 M6 B( c1 E]' I# q7 x0 G8 P
end" P% k+ ?8 b4 \

' J: C5 g" p2 {( {
8 N& P% r; l1 j# @* R. J. P( b$ _1 t, \/ v* D0 K' _
to get-color
( B( r; J% P$ }% o, M9 w3 M# F" F
set color blue

: c8 K) q5 j9 p0 E  _* q% Xend" r- H& x! R& k- @! m! I
# I" H( U, b9 v5 y
to poll-class2 [4 i9 [9 V" L+ {
end$ F+ H. t1 P: S
* P+ t4 ^* |# B* ^& C+ B* a4 N3 A
to setup-plot1
3 ]! s% P2 x1 ^* `6 b2 z& l1 ^5 L  a$ i8 W5 Z
set-current-plot "Trends-of-Local-reputation"
# i7 l5 p  q2 ~) M/ ^' z0 U+ X
* ~1 {# w, S& Z& l, P
set-plot-x-range 0 xmax
: U+ O" D: F7 {: m
" ?1 ^: ^/ P0 |0 s) G( Z- K, D4 V2 a
set-plot-y-range 0.0 ymax
! M" g  E; l9 ^; [* R& |
end' p' E$ }# d. s' g
3 j: F" \2 t( d+ w" P; O. ~0 n% K
to setup-plot2" P+ E- K; `+ ]; q' r5 w

( `/ s" e7 `% {- E# Kset-current-plot "Trends-of-global-reputation"
; {$ K0 m0 U' J# @+ ^! V" |/ ]
4 Z5 `" n7 M0 x; w
set-plot-x-range 0 xmax
" {6 E4 a# }! P0 H' y

, ?  j7 C4 v. }! L, Yset-plot-y-range 0.0 ymax

* S; E1 R' {5 g+ k3 _7 k' g! o4 aend
) f5 y- a* _) u. Y+ v
6 P6 R; Y7 n" Y0 k9 p& J- z- |+ t  dto setup-plot3$ f+ w. ~& l2 D" v% C9 L
6 N7 x1 Y' s/ w2 Y
set-current-plot "Trends-of-credibility"
4 t  \  W9 ~; L' o5 a

2 `! z$ A& o- I3 h, r- b; ^set-plot-x-range 0 xmax
& b: [0 M# K# n) ^4 Z
9 D, k3 H* _7 {2 l
set-plot-y-range 0.0 ymax

7 t5 I8 a$ O. ]" W" _end
, c1 i, `9 p" w4 D9 C" x$ C# |2 g
9 n! a6 f5 v! I4 g, pto do-plots
: N* W, W$ j, D5 uset-current-plot "Trends-of-Local-reputation"
) A+ D, T' ]0 u; iset-current-plot-pen "Honest service"" ]1 \: G$ F% O+ L: X
end
1 p; O" O" U  m( H) k  |
! B/ ]9 h/ R+ L# S+ i# [[ 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.; ~( d+ B6 c. O4 o3 |3 @1 Q
! ]3 N. C  T' ^
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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