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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:, Z  o; c9 W% X: m( L
to do-business 7 D0 |! D! o5 _
rt random 360- m% E+ L2 I( Q' ~3 B
fd 1
# R# H: u, c* h3 O+ U: } ifelse(other turtles-here != nobody)[& n" r' {$ P, m" V( q
   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.$ @7 M$ a+ N& }  E7 S
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. K- S4 B* ^' v1 O* z2 @   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 d( l4 J' z2 M* k& ^5 E2 d   set [trade-record-one-len] of self length [trade-record-one] of self
0 C9 U* ~3 U" I   set trade-record-current( list (timer) (random money-upper-limit))
0 t) c% G! \/ S& S; m- Y4 B; T+ k* p; [4 D
问题的提示如下:& Z- V1 S4 E4 U+ |7 l" @+ E
. p4 E0 ?: u" `* w# n* G5 m
error while turtle 50 running OF in procedure DO-BUSINESS
# m3 Y; ^8 ^; z- I' ]. Z+ A/ N  called by procedure GO
8 W. W8 O5 D9 {# UOF expected input to be a turtle agentset or turtle but got NOBODY instead.- @" c  n& U1 U; N: N, c5 h
(halted running of go)
- t4 P- y; W" V" Q  @2 n7 O
5 ?/ H7 I" L6 _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~~" i5 T$ E8 K6 m; \/ w* _
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 k( [  O9 W+ u- h+ Fglobals[
- M& n( H" ]2 _  ?7 x2 [xmax/ G: _4 R+ K$ R) q% g% Z' A* h
ymax
; f6 e" e6 X+ J4 J3 Lglobal-reputation-list: k' _! {+ n: C- o  x

2 [; r5 E  A% C  o: p' w! [;;
每一个turtle的全局声誉都存在此LIST" N* S' A: n6 s% |+ G. g
credibility-list$ U: j6 I% n) M  x2 D7 ?9 l
;;
每一个turtle的评价可信度4 O3 g, g7 {8 z3 i5 C% @1 v% l6 s
honest-service. ^# @; {$ ^9 y+ ]
unhonest-service  s& x* D0 C/ t5 m
oscillation
' l: ?( m( }9 {( Q4 _! p! frand-dynamic
- O* d0 B/ l/ ^& E. F" h& s]! j1 S: c6 w9 Y+ m  m3 g2 n
8 ^& h% A  U0 O6 x
turtles-own[6 K7 v$ E$ u  g- ^1 Q* V% v
trade-record-all
' @4 U$ p: q6 [& k* B6 J  g! D;;a list of lists,
trade-record-one组成9 _  y7 M% l9 j) v
trade-record-one  [7 k6 A! A  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
& |) \/ Q; \/ ^7 L$ j2 Q8 N
/ m# a% A# n: I2 ^. m;;[
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]]
$ T- w  L% M! U1 @+ e' _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]
/ k! K9 q* P+ X, bcredibility-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% @+ O! k; W' {1 M
neighbor-total) s4 X6 y4 h7 z) R) ^
;;
记录该turtle的邻居节点的数目
0 B  M6 S$ w5 @6 d/ j' _* Itrade-time
1 I0 t: h0 q  |. m;;
当前发生交易的turtle的交易时间
4 J, l+ T2 b* F# [% H' ]% L3 X1 Vappraise-give
* q9 p: v) j6 H8 D! ]- Q" ];;
当前发生交易时给出的评价
9 q" Q" }( _3 l- L& L, R8 Kappraise-receive" s+ d- M- `+ B5 |! _
;;
当前发生交易时收到的评价; b) o; x. {! w! r
appraise-time
( e+ h0 c6 g( L;;
当前发生交易时的评价时间
6 U+ I6 ~4 x+ c. [local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 `/ Q9 k! @! {9 _0 @trade-times-total
' T3 Q9 x) P/ K% g;;
与当前turtle的交易总次数# D1 g! E9 p" S7 W7 ]; w
trade-money-total
3 J; Q( X0 o, Y2 Y1 K* T;;
与当前turtle的交易总金额- U' w( Q  `# l( z5 B5 ?6 R; Y& C
local-reputation
" k4 G' f* \" v7 Bglobal-reputation6 F" e5 T( Z% ^0 S  x* p
credibility
( V5 D% ]* ]# i/ D0 t9 N;;
评价可信度,每次交易后都需要更新
) h, K# n! Q* }: c% ~" A7 u0 `credibility-all
5 F' j; [3 G, ?- i6 s7 E5 C& Q7 c4 w0 I- D% o;;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
, ?; \7 q: ^+ I( D+ }2 v8 Q
: l2 S- ?/ |- I$ @$ x# O6 ~$ i% P# q8 D;;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
4 q7 g: Y% P7 _0 B& Kcredibility-one; d: ?/ k$ V& m7 X- z1 |& @3 k
;;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
7 \( B  _7 _) \4 Gglobal-proportion$ |8 ~/ M' v( {9 ^! c$ r
customer
' T* t, a; u& g3 M; f; ~0 V/ [( Mcustomer-no
5 I. U5 h! W( ~4 o& L6 u  ttrust-ok
. c' m/ }, C. n2 T2 g, f$ C# Itrade-record-one-len;;trade-record-one的长度' m! e' g" @+ n6 D9 R* B
]
) M% b% u6 y1 `- p5 V( E0 f0 B, w8 n
;;setup procedure
6 _% R/ P% _# e2 P' a0 R0 ^! c1 _& ?. A7 E- E5 [
to setup
4 i. I- R" n" A" z) c: C9 n1 h. q, X
ca
4 E5 m3 N3 t" Q5 _( S, U( _. U4 q/ F

; ^2 `+ o! y* xinitialize-settings
) G( M/ F8 Z6 p2 y  E

5 h# l; W! g0 Z3 }8 Mcrt people [setup-turtles]

$ t6 V$ C& H& P6 _, t; O5 k4 S2 C" S. c, [" K
reset-timer

) c# [# m  u7 W6 z0 H) G' R4 E: X( e& T0 J1 m
poll-class

6 }3 G: X) L3 `" w, c$ m8 A0 y
1 J- A9 Y& S, q# Jsetup-plots

" [8 x$ N3 [6 ]% n8 t' y3 w% k' x9 P- {9 o; a
do-plots
( E4 X- r. T6 ]/ Z7 G# g+ L* o& n
end
( I) {/ B1 F. ^+ y
9 T% K9 c6 o1 N) h4 N$ b- ^# h3 fto initialize-settings9 p" s0 q! s" v9 n- }8 r
4 p$ j9 U( y& @' ^( L& i
set global-reputation-list []

8 `" [. v$ V0 e
2 c0 d2 [& \6 G0 s5 `/ D. hset credibility-list n-values people [0.5]
4 z9 [: ~5 L# I" X8 }4 H% m

: j' P2 A! N6 m# d* s1 x7 Gset honest-service 0

2 i: \2 K6 F3 F! x. v' ~( d. h" B: m; L# `$ Y3 f
set unhonest-service 0
* d  ^, Q! m4 L9 P
, k' f8 M1 v7 z/ K
set oscillation 0
1 `) U: {6 E% ?! D; |
1 g  a% |/ s- v5 N0 ^# Q
set rand-dynamic 0

. }8 g4 D+ u! send+ L+ d- k3 u6 `, Y

' w+ i) t. w! \. Dto setup-turtles
. U2 u% T3 y8 J" ~. {# u" Rset shape "person"
+ D8 {: Y* L; J8 ]3 L% zsetxy random-xcor random-ycor
' q; \- O$ P' z$ S7 S5 ~. z+ sset trade-record-one []
  N: C  d/ a- t* u8 T
. W8 C( \* Y0 X* N. q; @& u
set trade-record-all n-values people [(list (? + 1) 0 0)] ! i5 C* q' j& `( G; u
( V3 ?- W& E: b& y) y! ?( P
set trade-record-current []$ t1 q0 a0 W+ X/ c! E
set credibility-receive []
6 \% l* H/ `! |7 ]. v, K' bset local-reputation 0.5
3 U1 p" D- D, ^, Vset neighbor-total 0
3 h5 R9 H$ a  J0 W8 I( Y' ?" Z5 Wset trade-times-total 0
* f- m- n+ A$ K4 D/ Y1 hset trade-money-total 0+ B; ^! q, S& j# h
set customer nobody8 Q7 U5 J+ o+ u6 m6 H- v* z
set credibility-all n-values people [creat-credibility]
4 U5 r% \/ G% y3 [$ [set credibility n-values people [-1]
2 E& v4 X# R/ ~0 X2 Z5 Uget-color* Y5 T6 N! X. S4 x
. i. ]( S7 ?3 S
end+ q- d5 j5 l" e- `4 M$ G

. }8 ~9 U6 j3 l6 o4 n( }to-report creat-credibility" X+ E& m7 f, d! V+ {
report n-values people [0.5]/ `0 U4 p4 @3 p3 X7 r) }# L
end' o6 U) d) f. i9 m/ h
% q9 I, e0 V, t, d* p: K/ t; _
to setup-plots$ V, y  ^8 ~+ r3 h$ e' r6 ?3 h* Q5 A

9 P% S/ C. t9 {2 A. wset xmax 30
9 Z: R9 ?! z5 H% Y
$ m% B# f' l8 `- C3 |3 m$ t, j( N2 f# _! q
set ymax 1.0
# p8 ?: S, a' `# M9 f5 @
9 Q  G4 B3 i  j2 W0 j0 W% t0 ]
clear-all-plots

8 \7 F# n& q7 v$ i: o2 P# s9 d
8 b2 U, e3 b& c  Nsetup-plot1
& [' x" w# ?& |! d! z  O, H

% ~; F5 [' H; h' m1 t+ J- G) n# {5 gsetup-plot2

; T& J. R% p0 `1 i+ }' N
7 c7 h% ]! W( K1 @8 D) asetup-plot3
+ N2 R/ Q/ Z+ |1 `1 D, D& R
end0 H* o. B6 Q. |0 t! e

1 K* N) r; m3 N9 f;;run time procedures# e' V% d  R/ e% \0 C8 v3 N
5 J( Q: U) d! @! M5 t% U! u
to go6 e- n6 H2 C3 ?4 U7 }8 [

: [& w$ S/ m* `) fask turtles [do-business]

" h2 G; J$ P5 |" F2 @6 lend
# u1 z3 I; ^$ g0 l& J' k! I+ s% s% P
to do-business
7 P2 b" n1 W! `- S+ j% J* `8 Y

- ~% Y/ [  d4 m! j3 ~" N7 S$ u% P2 ]$ {
rt random 360

7 o# n. P, x! o. T- H, _: b! }$ ~0 i7 c* w7 E: W1 W
fd 1
& @) w% B9 q6 j# O7 M; h: b
: M, _% z; r- g6 A" q( [. D
ifelse(other turtles-here != nobody)[

! v' R, _' ?! I' y( `# Q* A7 d% g) S7 v3 j0 X
set customer one-of other turtles-here

, J" R6 q1 Z0 b. v5 e, m
1 K# u; Y* l) Z% S7 {& O4 a1 `;; set [customer] of customer myself
- B" `0 A. e2 Y- u, p: H! |
% s% p# |' }$ N$ q; B5 a( w3 |
set [trade-record-one] of self item (([who] of customer) - 1)" N' a" \3 g  {4 j: N
[trade-record-all]of self6 R/ x1 U1 t4 T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ z9 X" b( @8 W/ j& {+ k* n3 D. H3 X7 j# A- N
set [trade-record-one] of customer item (([who] of self) - 1)& D  c' D' M- |' T- K  u
[trade-record-all]of customer
7 `7 O: s0 v" e/ P: a2 h
( o4 O( B# C4 g
set [trade-record-one-len] of self length [trade-record-one] of self

# S: g1 ~8 s3 E: [1 m8 k
1 w. n5 w) ]0 F# Y: h" a; ^5 Rset trade-record-current( list (timer) (random money-upper-limit))

4 p0 h. C" D8 A# ]/ D2 k; l5 C5 C, v$ s/ s6 X$ ]
ask self [do-trust]
+ S1 }8 e+ ?& u9 q;;
先求ij的信任度. y: T" D$ ^6 w- l' K

+ q" ]3 j9 M& n  u% z! Y* C: Dif ([trust-ok] of self)" N! u  Q0 J% X. V  o
;;
根据ij的信任度来决定是否与j进行交易[
% ]+ T# T. n0 ?# task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# n/ ]1 J8 f# O1 b* f9 V! H; H
# B  x. ]6 x' i* u* o[
4 `4 G6 c& w( j5 `' [6 u

) G$ Z# N0 ~. r1 xdo-trade
8 `" B; [& O# W+ I+ e/ r& l* E. U

2 f9 w; i! |; F: z5 ^update-credibility-ijl
; }- X  a3 G( X/ D
$ T2 C- o+ o& A! x; r4 A
update-credibility-list4 J# ?; N1 E" ^7 h

5 w: N$ A3 X1 H& X
+ [2 b; y$ u, i0 w; W; Qupdate-global-reputation-list
( X2 g- J/ V+ u% W* T1 T

8 E6 S% Z! V5 i' g8 p5 npoll-class

6 M  a# t% p- z, P7 h( X# b- {5 q5 L: X6 Z
get-color

7 w3 u% G9 Y/ e0 M$ ~7 h/ F- s: |# A# x( P; V- D0 Q* e( ?7 d6 g
]]
/ x( B7 R( ?; U1 D, a5 X# O$ |9 F. w3 G3 Q
;;
如果所得的信任度满足条件,则进行交易
8 y2 @  J. K: U1 g) s
8 B  g1 q: ?0 y. q5 O! s9 v& l( n[

  U3 i: N8 d6 w" h5 v8 c
6 ~7 h$ S* r+ v* |, b' S9 brt random 360
! c+ v% j. |+ c4 g) ~

& _7 B( `# H; ?4 x. Yfd 1
% u5 v( q9 X6 v9 h
3 B! C9 Q0 X% m) n: o8 Y. G! G
]
  w' X9 C5 E7 q( h, I% ]( E
' t  o$ y: G* x7 f) U9 ~; p5 b3 E
end

. }% x, z; p4 u7 I* D2 a- Y) W$ p2 T9 ~: Z
to do-trust
; ?: ~8 j* c" F, R( Y: ~set trust-ok False  f2 u2 ?+ j8 {. G1 d
( w0 M8 _6 g* S9 `8 n

% {2 ?' i- H- P4 ?& Alet max-trade-times 0
! y2 i- w6 u7 X, U5 m9 [1 ?, |5 [2 wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& y' b7 i3 y4 A  R
let max-trade-money 0
% @, n% a" E$ tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 A8 H! _3 E4 E) W# xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ Z. Z3 m" v& d% ?
( `/ h' t5 `+ K, y
' @; U2 X# }: b" x" F2 Y
get-global-proportion
, G$ b& ~: E: Y, t2 }4 Plet trust-value
6 u1 [( A8 Z1 M0 C" E" X: F7 m! olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" [$ D) f0 |: b% G9 I8 U. Y
if(trust-value > trade-trust-value)
  H/ g8 ^& n9 W[set trust-ok true]
5 h, S7 I& m7 a. s: B" S/ qend
( J& R+ K) w/ @; S( O& T8 H; r7 _6 \& U
to get-global-proportion4 \# X' q8 X# T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 l% [8 e/ P4 z7 u- K- h1 s[set global-proportion 0]
# i% J) |8 f5 k1 I$ v+ F" L7 t' r[let i 0, N; m0 a8 k! g% c
let sum-money 08 P! u# s7 `1 D
while[ i < people]
  L4 ~0 I, c! Y/ b7 K[7 @; @* z2 ^" Z3 `# A' S  V$ q
if( length (item i
( \5 P1 x# x8 l& v+ N+ P/ I( u[trade-record-all] of customer) > 3 )
% Y4 i8 N7 Z+ e# L! g
[/ b) s* u( A: H1 Z: W( T1 d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 ?* b2 ~  |4 Y" u7 J]& C; Z( P/ N$ i- z% e
]/ O( {0 p; b' U3 Y
let j 0
1 A, Y* Z6 G% c0 A/ h! nlet note 02 @  ]8 J, y" `) [4 b
while[ j < people]2 W  ], i8 ~9 U  ?) E) o
[
  k' L  b( \$ C5 c( I: V! K4 Q  Tif( length (item i! W; X! Z- `: Q8 N
[trade-record-all] of customer) > 3 )

! ^8 v/ d8 Y' x. B[
8 X6 o9 L. u( ^$ r- ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" [" s- c; J; t- C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# m  J  Z9 M7 v2 v/ i$ _# t2 t. s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. _- t4 n6 Y& A( ~9 k
]: Z7 N  D3 O7 |! A2 q) d
]
- d6 d4 ~/ I5 q3 `4 Q3 t/ W( dset global-proportion note3 Y( h. [4 N1 Y$ y) D
]! l/ }1 E6 i* ?+ k0 X2 w
end9 W5 e6 G" G! ^
4 ~  [# y8 x/ `5 o6 p4 m
to do-trade
8 u: ]1 W& g, W& D;;
这个过程实际上是给双方作出评价的过程
5 T2 X* Q! p  f+ K2 d, mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" g% C; [2 Z+ [9 O0 R9 Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ s$ `! l7 g4 |0 M7 J! [& Eset trade-record-current lput(timer) trade-record-current+ [5 n. V6 ]" T) @2 A$ {0 g" |
;;
评价时间
# V  K: G2 E/ z& dask myself [* j) N4 {1 }5 ^+ o; I
update-local-reputation0 |4 N+ [  Y" e$ l
set trade-record-current lput([local-reputation] of myself) trade-record-current- ^9 d0 N  D7 \' ?# t7 l
], j4 i5 C; }1 Q+ S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 `0 ?, r$ V9 g) u$ r% w
;;
将此次交易的记录加入到trade-record-one
( Y1 l  B5 ?: X2 h/ [% fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& I- `( H# z* [- L" |let note (item 2 trade-record-current )
  ?5 T8 o- y2 b4 D; L4 Lset trade-record-current
: @0 M# o7 ]/ O7 W& G(replace-item 2 trade-record-current (item 3 trade-record-current))

7 P3 i& K: L! j, E# t0 U" eset trade-record-current
# f) p* X2 i- R. [(replace-item 3 trade-record-current note)
# p7 Y$ U0 n, B3 P4 b) K, H& ?# h! l0 B4 j9 J; `9 T4 k

1 [- ~6 w4 X/ \. T/ y; W5 p0 l& iask customer [
; O+ b) B) g0 h8 j, e" F! dupdate-local-reputation8 T! b4 z) R' v. w" l' d/ u+ o
set trade-record-current
1 y0 N; C; L/ U* r% a(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. g1 x' ^. @# u( {3 ]
]
) I  f3 O- T+ o" M6 p" F) z) O8 e+ ^
4 v! i% I2 D. k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( U# G* p6 R/ u5 N0 Y

9 d& R/ v. `$ e) z' Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 G5 R( i2 c( Z& L2 Q
;;
将此次交易的记录加入到customertrade-record-all
; g$ Z5 R) X4 f0 send
6 T4 y& K  v" q, A; U, V
/ k$ A% {7 R% M* ~) J$ pto update-local-reputation5 A6 K8 J0 ^1 c4 |  D) z+ {* I
set [trade-record-one-len] of myself length [trade-record-one] of myself* l0 I0 @4 k; B/ c% s
1 o& J' J/ O- Q$ L
  B9 z* D5 `3 Q3 M" J
;;if [trade-record-one-len] of myself > 3

% n7 d& F8 J1 D9 c2 N- k% c3 q  pupdate-neighbor-total
) w% u$ w% ^8 B;;
更新邻居节点的数目,在此进行
5 J- V+ q, x4 g$ }3 {: J) Mlet i 38 v9 ~2 s% A8 V9 [7 f) D6 t
let sum-time 0
- t& b' D4 e0 Swhile[i < [trade-record-one-len] of myself]& k2 Y# Q  {' S9 h( a
[9 J: Q* f9 H4 h6 p: ]- }3 @* O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 \) u2 @5 U+ ^3 G& x0 A3 O
set i
; E- o6 D$ H2 }# b; X+ ~( i + 1)

& q3 F' t& I0 [7 {' X: K6 ]]7 X0 l& {& L7 b1 W
let j 3
7 f, l9 c1 R- B! ?let sum-money 0
! c0 S# C) x" @2 `while[j < [trade-record-one-len] of myself]' n5 U$ Z% i4 i. d# y
[
, N5 o& ]  R/ Z% D% qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 @  V- v* G! o! c8 A- T+ D
set j6 q3 I$ T  K( W. M" B* v- O( O
( j + 1)

( F/ V0 F* ^$ s7 g0 @9 r]
. z! @5 `  q+ j. W) _8 Q3 ~% `let k 3
, h* W3 w* C' M' x  Z+ Plet power 09 A5 f* K5 w! V% Z* ?: K
let local 02 E  O: V3 ~7 ]3 W  U
while [k <[trade-record-one-len] of myself]
& D9 F3 z, o6 v+ x5 T( ]! K5 h[
8 ~8 ~" N5 N$ b: Zset 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)
( M3 [  b/ ~- Q' e8 d* P! C$ yset k (k + 1)
* Q0 B1 R% _1 G! @& Z, L  J1 z]
  c$ y3 `4 a: [  ]. w+ dset [local-reputation] of myself (local)
* Z* `2 \! A& W- xend
" g! q2 @8 i* `8 O6 g
9 u& o2 i: \7 q5 Tto update-neighbor-total$ B" T2 T5 a4 _  j$ {+ b

3 j+ U. Z9 d# `- rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( ^. I" x0 C1 o# I6 J! _5 N+ l3 M; e+ ^
. j3 \0 D6 a" d
end* l; s2 C8 K; J- l

. x4 R$ U& m* P8 Cto update-credibility-ijl ! r1 F2 H# N. s$ P4 p4 o* R; s: K
5 H. k" u8 R* ^* ^. [
;;
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。( C- v, l, Q+ [
let l 0) j: B* l0 g. P+ E1 @3 |
while[ l < people ]6 J9 w5 l2 H9 |6 q) B  v3 R# a
;;
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
$ F0 E* {2 f( b- l) }[
3 O5 \; X1 j' U3 I# Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) h: o( i* o  D1 ~4 v7 l
if (trade-record-one-j-l-len > 3)9 H0 L+ a  k' u6 q; `" G
[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* V7 G9 B& r6 T# T( N) X2 T* M
let i 3
1 D! _7 U- g, w2 Alet sum-time 0
' [* l7 g. S9 ?  D( qwhile[i < trade-record-one-len]: c9 q4 P! Y/ r" F0 t
[& _/ Z+ w+ J/ o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# W  O  _# d1 B7 l$ }6 B3 D
set i+ U9 \  f# Q0 r8 [7 c; Q) f+ k
( i + 1)

1 J; E, |3 Q3 H1 t* W. m3 g]( u( u% j: ~& g  W
let credibility-i-j-l 0
' u  C% t3 f- |/ a" }, R;;i
评价(jjl的评价)4 c; H  M5 D2 f0 Q9 g0 m) {) S: Y
let j 3$ `4 f- P6 a% Y
let k 4
$ ?: t- L3 P7 @' [9 L2 Nwhile[j < trade-record-one-len]
1 N9 T& r) D3 J( |& U# |[: U0 ?' q% q: m9 T
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7 J/ B6 k) B9 M, F- b( z1 [! U
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)  r7 x1 a1 \0 T/ O9 t' A/ a6 _
set j
5 P. L9 A( D3 `4 i# ~( |$ ?( j + 1)
/ M( K' S- D7 [0 L" e+ `% D5 k$ b
]
# R5 L. c# ]5 i  |0 jset [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 ))6 V6 w$ s( S, C# ?) b8 A
" }, \* A8 w6 m1 V& V6 Z9 ?/ T

9 q: [6 J. W  R+ l6 T& dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- s$ c8 A  X# z& Q9 G" z
;;
及时更新il的评价质量的评价
6 ?* P$ N+ w9 f: P6 B/ N( Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. p0 {. H: U; S2 k" m. o) ~( o, a5 Wset l (l + 1)3 c/ u0 r6 ~- `- s4 c( I4 {
]$ N( `8 g/ G4 t- X+ D8 u
end
) w' I# Z  r% M2 g% N, X4 {$ O$ l
to update-credibility-list7 Y1 A2 o6 O. x- V3 f
let i 0
( T" c3 q" L2 Y' A1 s- `while[i < people]# C" l% S* C0 |1 v
[
0 F8 |( Z( |1 ~+ q# tlet j 0$ o- b  }1 X/ b0 P, Z
let note 01 a4 r4 {4 j) t3 D
let k 0
( B* Q' ~+ C; u* Q: L& g;;
计作出过评价的邻居节点的数目% n% W$ J- d3 ~: w
while[j < people]7 C/ q! N0 }# P
[
" }. N& x: ~5 n0 A5 |if (item j( [credibility] of turtle (i + 1)) != -1)
9 _% y' C) [6 S2 c# r+ Y- w% \! l;;
判断是否给本turtle的评价质量做出过评价的节点$ o9 n# ~& R) B) Z# P3 j
[set note (note + item j ([credibility]of turtle (i + 1)))
1 W6 {( b  U- {0 i) E: u; d2 y;;*(exp (-(people - 2)))/(people - 2))]

3 g5 |9 D& @' H6 c9 D' Sset k (k + 1)
* l, i- Z% |0 p$ A4 ?], f% _: @8 F2 X% l2 _
set j (j + 1)
4 w! k- y8 U# w  ^]
9 x4 m( Q# K8 a) A6 }, [' Nset note (note *(exp (- (1 / k)))/ k)' y4 S7 z* T1 n$ g5 z" i9 J- o
set credibility-list (replace-item i credibility-list note)8 Q: d  ]$ L5 L# E& w0 S
set i (i + 1)" u0 }7 ?9 e- w  y
]
+ Y# f" r6 i, H% T6 F  i7 vend
# x3 I1 m; Q  C, t6 A9 Q# R! d& D# ]& q4 n
to update-global-reputation-list
1 J9 W' u8 o" w! Clet j 07 e6 ^. d( S$ S8 c  O
while[j < people]
2 ^! k" g6 F5 d/ b( B+ n& x[
) Y/ U9 ?3 l1 e7 d# {4 Wlet new 0
) D) L2 m$ l) v1 C! g/ t;;
暂存新的一个全局声誉
( h) @6 F% T# b  Vlet i 0
+ L  f9 j  _' t# ~let sum-money 0; P! G' l  N% H( D- `% r0 [# F3 H
let credibility-money 06 D  I) V- g+ k, ?4 D" @
while [i < people]: V6 x1 ~  C! F; \% p
[3 Z# \+ Y: U. A6 Y' T1 `8 m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. S: A! H; F) l! U- Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 K; j  e3 C( Y! @8 j& f, |5 Xset i (i + 1)- B+ @9 a( M# _& ~0 j; n! T/ g
]
, K) Q8 [+ C2 J. |& J7 Tlet k 0! `1 l4 x* a6 T2 j& N! R: \1 E2 ^
let new1 0
: c0 L/ S% H, T" N3 a. W1 A% v6 l. j) gwhile [k < people]
5 j9 @- f7 G4 n: a6 a0 i[
6 J* r: |4 n8 _9 V+ y7 Lset 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)" D9 V, n6 m7 C+ `1 I
set k (k + 1)
& ~$ t8 s( p; m' ?9 c]
2 I* F% E* c( L8 n. `, s6 F% B. [/ {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ U! _1 p3 x0 Aset global-reputation-list (replace-item j global-reputation-list new)
4 m% Q+ r4 L* H$ Oset j (j + 1)
% N3 J' m/ Q* J; p4 p1 j" A: G! Q]
! x/ L5 {! R  Q- P+ v" `end
' F. O, G9 h9 g4 s, g& i1 E
/ H: w$ X3 |$ D# ^' U' i5 t7 d" R" K! }7 K3 }2 ~' d
( B5 n3 B$ j% `* p- T% j# b
to get-color
% F! Q% q& h; \6 Q
- w* _% h; y# Q: Gset color blue
' H. d. f/ d, \
end
- @# M" G# @$ W+ Q& B8 K7 \; y+ l4 \) {$ B& d9 n1 D
to poll-class
% U' p* u. V( P# ?3 |3 R( d+ j% ^4 Xend5 O" _. Q# U  V5 R  w

. {' r' p9 ~* Z0 }  u+ Xto setup-plot1
5 }$ ~( ^: K: f2 d9 r0 c4 _+ Z
% f6 ^, P" c9 y' z& \set-current-plot "Trends-of-Local-reputation"

7 @# r( _9 o- C: F$ F- b  s! Y- {5 n4 ?* b
set-plot-x-range 0 xmax

& c. r* _5 j. ~/ M- ?7 S
* t6 w8 Z/ ~! `8 m" O# t+ xset-plot-y-range 0.0 ymax
' v% g- ^8 I# a9 F# m
end
, t* L$ {2 ?% c% ~1 Q" U  l
) s/ Z/ p$ l4 M: h7 [& H& Y- qto setup-plot2
: {# U1 N8 G. ~6 F' w! L& c/ N. K$ G
set-current-plot "Trends-of-global-reputation"

* u* _) D6 c- w$ P" h- F/ K
% z- L5 g, A5 Q+ u& g" _- wset-plot-x-range 0 xmax

" b0 m. `0 k2 l, s8 Y8 S% P8 D2 i- N$ P7 P, H% M$ _, W/ C
set-plot-y-range 0.0 ymax

5 M5 o7 O1 g+ u$ ?4 |end! B0 X& Z2 j; }, P; ~
1 Z3 g5 V" m$ _" y% o" ~
to setup-plot3
" C2 |: e, K- w3 c& P
  r0 W. {8 o( Gset-current-plot "Trends-of-credibility"
+ T, N# |$ w+ }
9 u- G5 f0 k* ?( p, W
set-plot-x-range 0 xmax
" ]- m4 e1 _# x4 p5 u: F1 v
7 @+ ]  w- @# O# t; q$ m
set-plot-y-range 0.0 ymax

1 p. y- \2 Q  I3 ]" |! a/ Gend, M! X8 H1 Z# @  f5 w

4 l. O& \; V9 ]" [; r- f6 R6 j0 \2 \to do-plots
" k' b  u) f' ?6 p: w! \: L6 f0 Dset-current-plot "Trends-of-Local-reputation"
9 B- s4 m: B! ]& n* S' fset-current-plot-pen "Honest service"
, p$ ]7 J9 d; j5 k$ pend
& g' I) L5 Y+ U) {3 Z- ^* \9 P  h# M! g! [2 V
[ 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.
, z4 N5 h) ~9 g; M- _9 S& {. y4 K+ F7 @% r: Y/ u
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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