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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:2 Z! ]  ]8 g9 O1 r, ^. d( n
to do-business , ^& Q$ y$ v* {$ y7 k5 g
rt random 360- P2 V  k# g& ~# v
fd 1' h  w" u1 s9 o
ifelse(other turtles-here != nobody)[
; ^# C0 x% B! 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.4 M- `& x& z" c' G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 V1 m1 ~- m# i9 O5 b/ s1 r& f) H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- x1 a& m' ^1 i" ?. x( y0 o
   set [trade-record-one-len] of self length [trade-record-one] of self
( }' y. A, o! p/ X   set trade-record-current( list (timer) (random money-upper-limit))
$ N0 }7 [2 o- l. n) k: v% z% g. H& l3 s0 Z1 ^- |( k) E* y2 x) ~
问题的提示如下:
3 t6 P& f, f$ T+ Y0 ]% B
! }0 ?0 @, ]+ C& K0 m! ~* S6 _error while turtle 50 running OF in procedure DO-BUSINESS
+ h. F# v5 o. D+ y$ V6 _6 j6 L  called by procedure GO
9 i' D) j3 A6 p$ G2 WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
  j" @& ]8 U8 K- P. ?" W
(halted running of go)
0 y' P5 h6 r9 o9 t3 S; b: ^7 J* z2 b0 W
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~3 O7 r. |9 y' h' S
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
6 M4 l5 ]3 ]4 o5 j0 o! [9 w: b. gglobals[
* R& M/ I( t8 U; H/ X- ?6 h2 xxmax6 h' u! I& m- ^& f1 ^/ @  L' e
ymax
) H) }/ e! v1 Eglobal-reputation-list
2 P; N8 T; ~+ ^( }( q2 S1 W6 G+ T8 ~# M( ?! Y
;;
每一个turtle的全局声誉都存在此LIST
2 G5 u3 \/ U5 |# ycredibility-list9 [& U2 v& B# q9 m- M) b& F
;;
每一个turtle的评价可信度
' R9 S! [/ p1 ?3 q% ]5 ^0 Thonest-service0 D1 Z( X% l  x- [) w1 v( d; E3 t/ f
unhonest-service) D+ e0 T! A0 M, K2 w! ~  }+ M
oscillation
- Y) V: Q/ r7 N. o* R1 e5 Wrand-dynamic; x: c# y0 L7 ]% x: E. A( ]
], }- A/ M! X" \1 ^
  `9 Y; n3 k! @& L4 r
turtles-own[
% C9 _& [0 o7 @. n' A: E4 Ftrade-record-all4 \- ~* x( l8 V; h$ i8 u4 q1 E
;;a list of lists,
trade-record-one组成$ f* C% O3 G2 V6 |4 @+ R4 f
trade-record-one
' d2 T3 f+ q& y: F! 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
, z! d/ N' B( J6 H. Z5 @) {+ u  r9 M1 i( A8 a3 w% J. q, r+ i
;;[
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]]
$ ~/ d+ u% P/ R% D& r$ O3 ftrade-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]4 ^  v/ }, W3 @
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* f% _+ H6 V4 _: Q7 M  T2 O
neighbor-total$ c' v% t) R2 q% L2 d2 y
;;
记录该turtle的邻居节点的数目
1 {, i2 r3 K6 l$ b* S; Ftrade-time
; Y# G0 e& d. C+ y  |( d+ e4 h% F;;
当前发生交易的turtle的交易时间
* v3 k4 t" J" K: b# w* Wappraise-give6 h  K2 w# ?) Y- k
;;
当前发生交易时给出的评价- l5 k$ f  p" @( ~
appraise-receive5 z. j" d/ C8 O6 t7 [
;;
当前发生交易时收到的评价+ C6 d0 X; T  N, X! P
appraise-time
/ _5 m7 v. v! d1 @4 @: ^;;
当前发生交易时的评价时间+ O% u0 j9 c6 U- d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& ]- F6 @# F& U6 N$ G
trade-times-total
/ {" J" N; M0 }( @/ x;;
与当前turtle的交易总次数4 a4 G+ f$ ~  Z: d: ?
trade-money-total
. C1 M, C- n. j1 M9 u( ~5 r;;
与当前turtle的交易总金额3 r+ N" @3 Y, H7 H! t
local-reputation
9 c# _' I& V7 ~7 qglobal-reputation* U. _- A  x  m) s
credibility/ O* A* V: ]. @4 A9 a4 F& e- r
;;
评价可信度,每次交易后都需要更新0 F$ R0 h* Q+ ]9 {0 P9 s
credibility-all& f. T! d7 g( b( v+ ?  N( D; l6 ]
;;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/ C+ ^' z- p' D. y$ ?
# \8 N4 P. D! v; ^5 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% n) c, o+ O6 ^
credibility-one, J% _! W1 P. \
;;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people0 K* W' ]* C3 I4 }/ j
global-proportion
% L0 _3 ~! J6 l" a# p% Bcustomer
. C- B& T8 B* [5 n( bcustomer-no
" }8 D1 K4 S! e4 G. _0 s! d& xtrust-ok: \. m2 I; A: T+ Y+ X, {* ^& c
trade-record-one-len;;trade-record-one的长度
- n  \- _4 L( ~9 J]
8 u; W8 o+ b. W0 G# ^7 R0 I
8 C0 ?, l  o# J% F  ^# p" v! O;;setup procedure7 F' b" T0 D2 z3 y. U
* j/ T  Z+ [+ ~$ ^% P* H
to setup+ V' L: k. c& L- z
- C/ A0 U' W4 q! ~6 g
ca
, a$ |3 m. Y, v, P5 M% z% ?
/ G! a0 Y* |! ^$ W  \0 u3 w7 [
initialize-settings

! q% u3 O, _  p5 b
( d6 H- b/ n2 B* n9 R; @* Kcrt people [setup-turtles]

; Y# i3 t% X- \- S2 f( a/ n
  Z* i8 ^/ _3 y* ?# Q/ ]reset-timer

3 z1 D( y9 x; ?, }. g- j) O+ F+ j: p8 ~
poll-class

# v! C) N. O: M' j& u2 h; B3 x6 E
2 D7 B" W" c# P3 V  Rsetup-plots

) E2 m/ B, y: m2 E  |' x0 s; @' ?/ n' C0 j: D/ ]
do-plots
3 O' Y- S+ D) [' h/ d; `1 @
end
; \3 l/ N- A' h% B1 u' N5 f& h1 z7 e( E3 t, G$ M! p  |
to initialize-settings
) C# P+ k9 g( @5 R9 T1 ?- R6 Q7 |/ U' S- `7 _7 T7 i1 u
set global-reputation-list []
" g8 W. h9 J$ Y" P" V- g9 i
- ^% {3 b9 C5 ?, W; w
set credibility-list n-values people [0.5]
$ v$ T1 }6 ^* A; h% l0 T0 `

- O* M) C+ m, [" x, N4 J5 \0 `8 cset honest-service 0

, a) c* u/ u4 d1 I3 o
7 q5 g6 N+ d2 \) B8 z( B6 c) Yset unhonest-service 0
' L/ L: @% e0 i
8 m' x) J* X# E9 j2 w
set oscillation 0
- }$ Q3 E8 l6 D5 {+ ]1 j
9 e1 u2 L8 _* i) d2 |4 \6 \1 k' r
set rand-dynamic 0

; q: \9 I1 E" Oend
. `9 u1 }; t% i% R
4 }7 n0 I7 d# E$ H+ w% L# nto setup-turtles ) E' V6 ]4 B; b
set shape "person"
* h6 H' a2 m6 W& [8 _! y# S6 \setxy random-xcor random-ycor4 a# p9 o0 u# w' M" ]5 ~, B, }1 Q9 m
set trade-record-one []
6 o" f: e1 h8 e) i; X
* b2 m& m: z3 P% V5 Q
set trade-record-all n-values people [(list (? + 1) 0 0)]
+ g/ x0 h% A3 d0 x# g2 ^
6 O) ^( q6 C% W$ ~7 b+ R
set trade-record-current []1 }# C1 I5 A, ~' F
set credibility-receive []
3 M  I0 x& o* _+ N- qset local-reputation 0.5  d% B' S' B# A! e5 {
set neighbor-total 0
+ w6 a6 d- j) ~: ?; [( \set trade-times-total 0" X3 F+ a& X) \
set trade-money-total 0
+ ]6 y4 u$ z6 k: v' eset customer nobody
* ^: W' S" E7 F4 S. v1 V) \set credibility-all n-values people [creat-credibility]- D8 b3 d+ T) r" I
set credibility n-values people [-1]
/ V- f, D  q& S' j4 |* N8 Uget-color
5 s9 o3 n7 x" x

, w: M: e, J# |" N1 M/ ~end
: l+ L/ r- F, ~# D$ V' Z/ {$ n+ m- j  K  d0 ]+ D
to-report creat-credibility
& V9 e) u* W1 l' X7 q- `9 i' z- ~report n-values people [0.5]9 u+ u0 {2 ]- ^$ p' W
end
( h6 X( H$ C2 w
2 x' w! N8 X( Z* `+ U' y9 T' e8 fto setup-plots
* E8 V, e3 m8 U. x9 Z) o% I+ Z
9 J7 g% R# p- n6 Dset xmax 30

& A) e  A' U  E& p3 d6 r
( g# Y& G8 K4 f* v% _set ymax 1.0
0 G* h; q8 ?, y5 l

0 ~& i( c  G5 c, k6 t# [% @clear-all-plots
, W( i, L' {- c& Q' a' p
4 P+ k5 f8 F( w% f, s2 C
setup-plot1
. X( `% Q, h. m; j. V. J: S

9 r7 X. g- x/ @) t. ^setup-plot2
" f. n# l+ t1 ]* ?5 x7 d5 Q

& f3 \+ {: N- D) m: asetup-plot3

) q, z7 U( T7 a; e6 t& yend6 @. F  ]5 c6 U, j
  K0 i) ~7 l: g  _
;;run time procedures3 X8 o& H% V, W$ n. x2 U
9 S# q% j) X: Q6 [3 z
to go) J+ ~$ m, M- H2 g

) R* @9 Z+ j9 Oask turtles [do-business]
( C, z& H. K4 `) }$ X% T3 ?2 k0 x
end$ \7 w# N: g8 k3 n2 N. {
# j  u- o2 B& t0 O5 D% {
to do-business : @+ f% D3 x% x  P* s

0 {  w- G& o# a! f7 B$ c* ]$ l' _/ R. j- ]
rt random 360
1 e; w" x4 e$ z6 Z+ K3 p/ o- H

; ~1 @4 M" C  s( @2 X* u0 ^fd 1
" R1 ~. ^8 j- \1 g0 s: r% T

, j0 g; f' h4 d& x- W9 _6 nifelse(other turtles-here != nobody)[

) u3 J4 a0 K! l# @
$ o( c" ?) P: M" P/ |set customer one-of other turtles-here

! K, Q0 }5 o: r2 o% I6 i2 l( r
. P+ f' y& m4 B+ c1 Y4 f;; set [customer] of customer myself

! c( k; w1 @3 v3 i2 V2 s2 B  S
2 L( x. R! @2 m8 ]3 C( K% iset [trade-record-one] of self item (([who] of customer) - 1)
+ R" S: _1 _+ Y! T1 g- U[trade-record-all]of self
$ j: d1 c. B7 z+ Q, P/ O2 P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ u1 S8 V. J5 }4 N1 M0 j- x1 F5 S: d

" I' p: i& _2 m7 ^set [trade-record-one] of customer item (([who] of self) - 1)
9 {7 @1 \; Q- G+ v1 U[trade-record-all]of customer
9 r, L7 i& D7 f& \/ ^

( t/ w- {0 ^3 n  Uset [trade-record-one-len] of self length [trade-record-one] of self

" L" d7 \6 ~- v- |8 f0 b- h0 y0 w# u6 r" Z
set trade-record-current( list (timer) (random money-upper-limit))
2 [. ^8 m: h2 ^4 V) j0 b0 A

" y. ?1 d- d& d% q4 z1 A/ K% ^ask self [do-trust]
  O" h8 @3 H! G;;
先求ij的信任度
# o, z; c' m7 [% {2 J2 u2 H$ P4 O$ y. ?9 ?; `4 R
if ([trust-ok] of self)
' d* L1 a; \1 s/ e0 N$ {5 p;;
根据ij的信任度来决定是否与j进行交易[$ t2 Q! A* T  W4 V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! l! G' `* ^3 j+ X8 {" W$ O8 Z. g
3 u$ `- v# D4 o7 V: e2 N[

# e! q% [7 w/ f7 m
' Q/ R$ P3 q5 o. m: T' ldo-trade
# n! y. f) U; R/ @3 H1 O, }5 M- q) Q

9 ^, W2 B, \+ s# |. |" K6 Aupdate-credibility-ijl
1 x8 q0 v; T2 Z' c, ~6 F9 T  t% z

' C0 g+ j5 e' f& gupdate-credibility-list+ ~1 R6 i/ B7 v3 y4 z

- _6 ]2 p# D$ z; k  R, R. z5 q. b
1 B8 T% `3 Q) }update-global-reputation-list
3 n1 w4 U0 t# u$ ]' R7 Y: ?. P3 D' P

$ n, y1 U7 P! X7 P: p( d$ Spoll-class
* }' t/ z; b+ G! u
$ @, a" W# j& ?1 E; M# P, \
get-color
& c" I/ r; L/ v2 P% _6 M
0 v/ W7 l4 O' T3 ]  C# L( `
]]9 C. e' q3 L! t0 b* P5 \$ W5 a

( [  R3 o0 B# \- z3 a;;
如果所得的信任度满足条件,则进行交易
8 m) U; b, o. V2 V2 v7 [* U5 ?' a. s3 e9 r" R: w4 s
[

, O& {0 [  h4 I3 H( T5 P6 M: f2 t$ L; l+ J
rt random 360

0 W, g; d2 G' e9 \
7 Y% e2 J. v6 f9 t7 d  _2 jfd 1

  S& n6 \- R6 }8 m% v- ]$ j" R; c/ C/ @5 i0 \% _: {
]

* k! B2 |* c6 r0 H- G4 \- c1 a; J) T8 s1 c; I1 @0 V
end
" {( G1 W# e5 N

2 y; l3 J: ]! h! _/ \6 i$ ]' }* _to do-trust % y/ ?0 C! @! {+ y0 h3 @
set trust-ok False
  D/ R" r; P: y  |+ q0 a! R# l: U- R8 S) H

* ]0 g; v& o* T" [0 t2 [, ^let max-trade-times 0
" n( A+ }4 J. O  Cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 z, r2 q6 d  q- P3 E- j: K8 L
let max-trade-money 0" W% j  \( q9 v( f+ B0 n" }! S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( `0 Z- y, p0 {% K% {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 T' n% r2 U2 c: K* J: g6 S/ B  u* W, G& E% y8 b4 }

0 ]6 p+ l9 o2 u* m0 }# C$ _' Xget-global-proportion
% K8 ~( q% H6 @# A: _let trust-value
( ^) s' |) w2 b( ^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)

! a9 L4 J3 N: c: K- uif(trust-value > trade-trust-value): F0 W8 z4 i; R: |' C
[set trust-ok true]
1 x- ~  ~( J. `# send/ |- D: R2 X6 t: l4 _" }+ e& o
% q+ z0 T7 Q' P3 @( i# ~+ c
to get-global-proportion0 U; m+ }; ^# d4 @7 G/ k: n' Z* e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 J5 Y1 Y) N" _+ h/ Q/ l; P: }. y[set global-proportion 0]
- l$ _( D+ M' A. M  O( m0 e9 ~[let i 0
, E9 \6 q+ l+ \+ s2 o) I! F1 S9 olet sum-money 0$ g/ `  L1 W( m9 Y+ x: q. J
while[ i < people]  d( C0 `* A! V8 y& [
[
+ q+ [) ^) {+ b( F/ Rif( length (item i
& c$ l# d% W" v; v) B[trade-record-all] of customer) > 3 )

3 N9 }) V8 X8 d; w4 g1 l2 }1 i9 l[
! m7 M( j1 C; @" @: B9 `5 }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% n# j2 U7 x, _
]4 T1 W! x2 J1 E; B# o9 r% x
]
4 J3 V2 {& J6 f! y# blet j 0- g+ ?: o- S! Q
let note 0
2 q( R! V0 X% k7 t. Xwhile[ j < people]
( X" [+ p$ o( M! u' h[
3 z# o: }6 i% o- }0 xif( length (item i& q9 V4 Y5 {) ~6 @
[trade-record-all] of customer) > 3 )
& ]1 L0 o( J: E8 E1 G3 r& [
[
, l4 ^  x% W- T. n& mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. M0 Q  G7 b' v/ Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% J  i( J& L, Z$ B% y7 ~. l* h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; E3 M' [0 A( U- J6 B7 C  N, O
]
1 @5 j  P2 D+ W: k# `]
$ d+ g) F# X+ ^set global-proportion note: l* g5 ]6 Q! s; [4 [1 R
]2 X$ j. j( Z5 a; ^5 i9 K( w, o
end
$ w( m: _( G" U# X( U8 Z: k: L) U' ]
to do-trade9 [! |* U1 k/ s; g
;;
这个过程实际上是给双方作出评价的过程
1 f& j/ i# K2 D! q3 Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' y) V( [! q7 nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) \3 A# U/ f* ^1 b$ W4 Y' t) Lset trade-record-current lput(timer) trade-record-current  b, C) ~: R& w0 D
;;
评价时间0 e8 H# E" h) G6 h/ O: g- g
ask myself [. z4 H# E4 Q# }
update-local-reputation
" X9 q9 ?5 a. k9 V2 W" Y. nset trade-record-current lput([local-reputation] of myself) trade-record-current
) r3 F& @( v3 p5 f7 }2 K0 I]
$ ~7 }% \2 ^! Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) Y& m5 M! d  k2 d;;
将此次交易的记录加入到trade-record-one
  m" \) h& c* P& o* f6 Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" i/ m- z' b# V: t7 s$ Ulet note (item 2 trade-record-current )$ F: u$ R- o- W$ H6 a
set trade-record-current
0 B. r- A6 {! k7 l/ @(replace-item 2 trade-record-current (item 3 trade-record-current))
7 N% J, N# L- ~; Y" R
set trade-record-current1 G9 @2 l3 [6 Z
(replace-item 3 trade-record-current note)5 W; J0 l! ^4 F' ^* K

; w- k# K1 k- _, H
% J* B" ?$ z# n4 }% X7 B. }6 D( f" _
ask customer [
$ o2 ], S8 y% C) pupdate-local-reputation
; c7 w: f2 [: O# @set trade-record-current
, B$ U% z; ^1 e/ `( J" }, P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- J7 E- k2 R4 Z
]
) Q/ g. s" y1 c* I
) v$ ^3 ~/ I# }! c& o  p- l

* g1 u! E, W0 z- h3 i# ^2 oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" W' B+ V! v6 |7 t+ T4 {; m1 U

6 ^* h1 ]$ K/ F9 T. l" ], _set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ H+ P+ ]+ A. \4 J  Z( x7 u
;;
将此次交易的记录加入到customertrade-record-all3 x; ?( c9 u" B9 g
end
; b% t+ f, X4 |
3 ~* d* `" N- e8 ?( n- nto update-local-reputation+ l. N5 m, ?! _3 R& O
set [trade-record-one-len] of myself length [trade-record-one] of myself0 Z, z0 S* ?* O& l. o! H( ]

& g7 M& J% x) p5 e' G% J1 x+ W
  K# Q* k  Y. c9 R1 _;;if [trade-record-one-len] of myself > 3
  R6 @5 M  j) I
update-neighbor-total# S6 r6 L! I( r% q% D9 Y
;;
更新邻居节点的数目,在此进行* P, _$ Q! t2 [# s  H( J
let i 3  P1 n9 L' E- I, E4 u1 H5 I7 P
let sum-time 0# l# x: j' Z$ `6 a; _
while[i < [trade-record-one-len] of myself]
4 X! g5 ^4 w% m; w: {, d[
4 {; r6 M/ J1 {3 X8 \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 }! T# r. f4 Q3 H/ aset i
7 e& |8 i4 h2 V: k7 h( i + 1)
" ?8 Z( V% P0 R/ E: P% ~6 A! ~
]
9 \4 q# B5 x0 V; Z: clet j 38 Z; f, \9 B# q
let sum-money 0
/ b! K# X, e4 Owhile[j < [trade-record-one-len] of myself]
# j% A" x$ O. D1 M6 f2 D: n[
4 h# N6 ?: i& m4 W0 Q$ A* uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 {$ n2 r5 e9 d/ B
set j
5 D" `3 P: A: `. N# f4 |( j + 1)

# `2 \' E+ s) @" E]
2 C5 E+ m3 u, D* U# i, e7 D( Y* zlet k 3' I: d0 P7 {6 Q2 Z' x
let power 0
. g# @, R/ ^; f6 x% E& j! {* Wlet local 0
  o! t2 U* V- Z4 ~! B! _2 b3 Cwhile [k <[trade-record-one-len] of myself]
$ l% ~1 v7 G5 L2 \% [; e3 Y[: j: p* o1 v+ q( X( }
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)
2 ~0 t* L1 \% x3 ]set k (k + 1)7 f9 T' F& Q0 O9 v9 ^6 I% ]; T
]
+ E( m, H  l) W  ^  o# }2 fset [local-reputation] of myself (local)
; r8 y2 {* U1 Z; Vend- p& r& S' f7 V* c7 m' Z7 J' J9 s
+ i5 f$ E- I8 D: A3 j' z" A3 I. O
to update-neighbor-total7 _' k/ e" u: L  v, i5 p
( Y% ~8 _" n/ N
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! T) ?; C' _0 g
, T2 m& O1 T- e/ Q
" D8 l- u' e/ A9 A" ]. ?/ C
end
7 W" N0 v' t7 D2 U3 q5 k" _& g& P$ L+ L
to update-credibility-ijl
" D# m/ j: S9 ]) ?5 Y1 @2 _- I  ~% X
;;
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。+ w3 B, ~2 `) e3 m( ]
let l 0
. \3 B# u8 c! U5 f  x  A: y% o' fwhile[ l < people ], S1 o/ j% ^1 H9 G  n, l
;;
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 f/ n% l, C% s& K6 g1 R$ z2 [[/ z4 K3 B( r0 T3 q1 {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 e% @. t6 [! q  N; y0 I3 Cif (trade-record-one-j-l-len > 3)
# V8 w1 w/ O2 y$ Q* k[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! ^8 E% h& q" ?: `, e' h8 ]
let i 3
  W7 n& _2 q* L' Z$ v4 S5 vlet sum-time 08 M  `# O; E) P/ I
while[i < trade-record-one-len]: ?* g; C! M7 t0 D
[# o' K* I' Y% e# _8 |; f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ A( x6 y$ B, E; S0 p* X
set i
& Q% X% B: {1 X- s( i + 1)

/ z& P8 _2 W& S+ R7 F4 k/ [0 d]
7 x. x. T1 P; qlet credibility-i-j-l 0
& u4 e9 `' h3 m7 B;;i
评价(jjl的评价)9 c# p5 l8 }3 V
let j 3
2 g7 u8 I3 W, }# Mlet k 4
3 `; N* u4 y# a5 Lwhile[j < trade-record-one-len]
6 s6 n* A  @  A9 @6 m[5 L" y* i( b) o+ k3 [& E
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+ R# v4 b4 E, S
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)5 H) g8 d: ]' b0 ?
set j$ t/ v! ]# C+ K% L
( j + 1)
  k* H- X4 K, y- i( A1 F
]2 U6 [5 S0 c# R7 K
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))7 X2 w) Q6 u7 e+ ^1 c

8 o  W# ^3 q. \" `& N$ n" d, Z
, x  ?9 M) Q$ d& ~3 v. n/ k
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! }! @( O) @& q' j( V- j  F
;;
及时更新il的评价质量的评价& e, E! e6 q! W% F" u* [# a
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# F1 _, v, {6 U6 X
set l (l + 1)7 w/ Q/ @0 n2 n- U: A0 w1 U/ u1 n& \1 c
]
) `1 x% W, }# ^/ Wend
. v# x+ Z: M/ t8 a, ~. w( I: b: |4 W/ }# s- _
to update-credibility-list/ U# l7 f/ h8 F2 T. f8 i/ Z
let i 0
) d6 C, [6 o9 r4 p* L$ iwhile[i < people]8 G1 {" P+ b7 J  ~7 I
[( S" k" Z0 u  a# u
let j 0
8 b6 R0 M9 X9 O1 C$ o9 c" s. Ylet note 0
4 P8 Z# p/ A5 G, v6 B3 \( A! Y6 qlet k 0
. C* p( s, X) r3 n;;
计作出过评价的邻居节点的数目
. F0 g0 q3 j! A+ G; A/ fwhile[j < people]
+ h5 `4 ?$ r& ^$ _! S[
; ~+ S; b$ G" Kif (item j( [credibility] of turtle (i + 1)) != -1)+ H6 @4 V( B, \2 \$ U3 q8 T: d
;;
判断是否给本turtle的评价质量做出过评价的节点# g: w$ M) g) o+ A8 s- s; {/ R* f
[set note (note + item j ([credibility]of turtle (i + 1))), O% |' F( G' X9 S' x
;;*(exp (-(people - 2)))/(people - 2))]
, c) f4 K  I2 f6 B" s. @2 [1 h
set k (k + 1)
/ ~. M2 q- u$ e& g- I1 h# Y' f]) F+ B' r1 a  n7 U& E$ y2 |7 }# M
set j (j + 1)
/ G- h" m1 v; m  R+ R' \+ I9 |]
  X' _8 z" Z" `: A' P& Q% W; fset note (note *(exp (- (1 / k)))/ k)
( `# D, |& s$ p. Cset credibility-list (replace-item i credibility-list note)3 m, @0 J! `6 Q, |( j1 {
set i (i + 1)
7 e3 F. |$ @/ t]" W( [9 t, Q% z  Z2 Y
end, J: Z" S# f* ]
7 v; D% f- r5 t4 T$ U8 q& _& u
to update-global-reputation-list8 y/ C  r& O$ x& P! K
let j 0
- h9 Y8 m7 d& Q/ Kwhile[j < people]
3 S+ k  V" Y+ g% N) U1 I2 Z' z0 F4 M[
) i4 G# B; t6 W& k8 ]let new 09 i2 n! W( v* Q: X! X/ u
;;
暂存新的一个全局声誉
; m5 k  k8 e! f( ]4 jlet i 0% o$ U0 |' m6 S( F$ d( a: }- [
let sum-money 0+ _' a4 m  C$ d* G
let credibility-money 01 Q+ L9 |$ N( S3 ?* ~& V* x
while [i < people]
0 a  k. H  K" ^9 |; V1 R[3 b1 H8 H5 O! Q- z% g, z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  b/ |* C6 X  x. B- q& o" i- b$ k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& \# F, P# v6 x
set i (i + 1)
% L8 l' ?8 f3 @% V% M9 f  G9 g]( g2 J3 M: B9 ~* T& Y( p4 E
let k 04 i- ?# e' O1 t
let new1 05 `$ {: P3 I; d' }/ |, e" `
while [k < people]
) I$ o# C; L1 V* v$ z' t! |[) P+ L+ E/ l$ c$ u( C* i! S1 ]7 T) w
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)8 D" E$ S5 x6 z0 b9 V. [& p
set k (k + 1)- I, O& l- p3 p$ {+ S7 E
]7 |: J, ?& z! H8 @
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 z8 R. z; V' j( T# {: [set global-reputation-list (replace-item j global-reputation-list new)
6 ?, @- T4 z" a) `set j (j + 1)
6 c: B2 a! T7 j; {6 u$ }  I' u]3 I3 A- n8 x& [5 }4 ?
end: M0 K' v4 W' G; W, c

7 I4 Z& e- V5 Y  `+ S, m. R9 t: [$ O0 W1 E7 e# s5 [! m4 W

- R+ d: {2 c) |to get-color- K9 C7 Z3 Z/ w; w; H1 Y% M

: M3 f7 ~7 {2 H  Y- T3 n" s7 U" [set color blue

/ t9 A$ i" z. f8 |end+ D7 n4 V1 W4 y+ }% M9 ?

% l) q  {' h. q4 |7 kto poll-class2 B4 b% D, h9 W+ E& ~+ C1 E/ X
end
% x/ x: B8 e! u5 T' {! n5 C9 Y8 z3 j9 Q1 h, z$ k
to setup-plot10 ^- ]5 i+ F& F, H
6 A6 c- x" r" X2 Y* C
set-current-plot "Trends-of-Local-reputation"
+ ?! T% t. s( V" Z6 D
# u6 R1 f4 q  B2 ^" {3 c
set-plot-x-range 0 xmax
; _2 x) L7 `. d

  ]2 ~7 D/ u3 i$ T  ^0 }2 Qset-plot-y-range 0.0 ymax
# _" l. E4 q* Z& p0 w  \/ w
end% J- J7 f+ a% h' c5 f& l% u4 W

: H) M% B& g6 jto setup-plot2
1 U3 ^" k2 {' U* q/ ]( z# d, N+ h% V
set-current-plot "Trends-of-global-reputation"
8 s2 I- u5 y+ d0 m, `3 e

2 ^  T2 y0 _0 i- T) w8 @set-plot-x-range 0 xmax

- _% @3 c6 A& v6 e7 @* ?8 ^0 c9 n& ]: |( [# t! V3 X
set-plot-y-range 0.0 ymax

7 u4 w1 M8 N6 v: I1 Qend
' }! x0 N( d% y9 ^* R( a+ j1 V
to setup-plot39 d2 B0 C( T8 b% \, ]

  m8 c' n- B6 Bset-current-plot "Trends-of-credibility"
: n4 w! F7 t) {* q! N" \1 h
1 K. N; W- L3 I9 O/ j
set-plot-x-range 0 xmax

3 I3 @+ |8 K  X( {# M
& L2 o# A1 x* `/ G2 a( n0 oset-plot-y-range 0.0 ymax
& l5 p1 e6 E( ]5 Q
end
, u3 O  T6 x9 s$ Y$ x6 K
5 A3 w* k" n5 J' r3 @: L9 D5 Rto do-plots# A- M8 {. i" ^3 B: a* W7 S9 O9 }
set-current-plot "Trends-of-Local-reputation"
: B" W: p' ~$ O5 Nset-current-plot-pen "Honest service"  N9 Q* {5 B4 M3 ]. M+ m
end
4 K/ G# o5 I8 w( ~' B& S6 Q) u2 X. F8 `3 w% f8 u
[ 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.
2 f3 w6 C9 E3 k0 T7 a$ w/ z
8 R$ @$ |1 C) f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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