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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/ A4 r1 ?2 p3 e  O8 g3 O3 J( E0 oto do-business 7 b5 j* v$ N8 C! _( n
rt random 360
  s( s) [# u* I9 o fd 1
) A8 {3 V  O0 [# o ifelse(other turtles-here != nobody)[7 r3 j& C, H$ ]: R0 S/ y( H
   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.
* p# F( ?9 Q% a+ _& X   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 E, O/ g3 l0 D+ P, T! w
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 @/ k! q: b  j5 a5 M' z6 J: x, r
   set [trade-record-one-len] of self length [trade-record-one] of self
: R, e- o7 N4 S: m/ f! g   set trade-record-current( list (timer) (random money-upper-limit))4 {- @  Q7 P4 s, R

5 |8 l9 J6 W! \( I$ j问题的提示如下:8 `: v- N* Z% V( S9 u2 N7 ?6 m2 r
& ?9 x/ C, I5 }& `
error while turtle 50 running OF in procedure DO-BUSINESS: R8 c4 Q$ a# L2 d% `
  called by procedure GO  n4 E. }0 d8 a3 t& _! o1 v0 i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% r' D& e! u( |! f; q4 m% ^
(halted running of go)
9 z4 H! G; s- O1 a6 S" a  O9 u; }6 p" Q0 c% [$ D
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~~
' g$ ]2 P$ ^# K" [* b% f9 O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" K8 [/ J" `  ]
globals[
8 m+ E, j/ o5 i3 e9 vxmax9 }& z# X) |9 [' X% S  w7 @
ymax
4 ^+ K# @/ `0 ^* s5 P9 |' k: |" }global-reputation-list
) j/ ^! R6 y1 w& M9 i9 m' `
- t0 K: [( a# c7 W& d;;
每一个turtle的全局声誉都存在此LIST
; w# w2 _1 H5 D& f, D0 g3 rcredibility-list6 D% a$ m- f/ E7 y. V6 S/ W
;;
每一个turtle的评价可信度* ~  _7 x% A1 ~8 n( n+ k
honest-service
$ h7 W* Z3 M; _( t; kunhonest-service
2 t& T, j# w' ^oscillation, B. H6 o$ }2 @3 R  n# k+ Q6 _5 u
rand-dynamic2 y" Y( A# F, S, b
]7 L8 A# _) v& @8 _& \
7 O5 p- d4 Y# E& `
turtles-own[- i7 P  F, B/ e0 p$ x
trade-record-all
$ b& k" c, ]4 N, Z4 d, N;;a list of lists,
trade-record-one组成
' T' U3 f3 C) ~* N: Itrade-record-one& w. Z; X! Y: Z6 n$ G( O. A
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 l# T- h) l, i

( m8 H0 I3 ~/ Z( s3 B;;[
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]]# A, Q( }% a7 B3 N1 P' y! p( 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], [! v  l9 U$ q
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
, c) w8 v3 Q4 |& }1 a6 ~5 z9 Wneighbor-total
$ i+ O" W& Z+ r0 O6 q3 k;;
记录该turtle的邻居节点的数目9 Q3 R, ~$ K) z  c! }9 ?
trade-time
$ H- z+ u& ?/ I4 S" [;;
当前发生交易的turtle的交易时间
- e+ D6 L6 p* e" s  [& ~appraise-give" a+ e3 Z0 \+ o- D1 w" G
;;
当前发生交易时给出的评价0 q" }, V# _# _. F3 V4 l$ R6 W
appraise-receive& P4 s4 R# ]8 z3 M8 m/ y  [( X
;;
当前发生交易时收到的评价
2 D* F. N* {) P6 W8 ?& K) oappraise-time3 ]8 s  ?9 n5 A: h5 q
;;
当前发生交易时的评价时间
9 w% U5 e2 c, T( I( C( B- e* @3 hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉5 J( [; Q5 _  a; d" z+ I& W
trade-times-total& P/ w! f/ s" v# o9 M; Z
;;
与当前turtle的交易总次数
7 t- _, m2 X0 U% atrade-money-total
0 `; G$ ?) O- J. H) ?* ~9 b& O7 Y8 |;;
与当前turtle的交易总金额8 g; p  ?. k8 |& N( [; n7 a1 g: a
local-reputation  B8 Y9 J$ x" u, z/ v6 \7 B
global-reputation5 W/ Y" K! K4 j
credibility
2 W' E6 M# ^7 u) P0 ]7 o;;
评价可信度,每次交易后都需要更新: [/ m0 s% |% j+ E: y7 V
credibility-all; m7 }( |2 n7 t! W
;;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8 R" X" x9 Z' x; J

1 H1 n1 K% P, z;;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
( u, M  ^5 ?; b; [) K% Pcredibility-one3 I9 U! O' l! P6 J
;;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people5 Q  R. M* Q! ^8 d$ V; }
global-proportion
4 l+ e9 Q" o% u0 ?2 D  }customer# _  a- d8 a3 X# [2 `
customer-no5 j9 X7 M3 ?7 q( U" K0 X$ s
trust-ok! G6 \/ T8 M1 Z1 U
trade-record-one-len;;trade-record-one的长度- |+ |3 J, N  k/ _
]9 O+ o, m' M+ D

  I  G8 D$ ?2 Q+ k;;setup procedure
) D% e" e; \" `( f" y: f+ y
' T, A1 N: P% a7 t# ]# N# [! [to setup
9 b  L# b6 W# ~' w
0 p0 W: f- C1 P2 }$ Y5 G! N! O% jca
3 u3 `$ M7 F, c; q
% n- c1 I/ H: l5 J
initialize-settings
6 x1 X& b/ Q; D+ N& B" U8 t* y
4 A) i6 \& ]& V% i' Q
crt people [setup-turtles]

* i5 o6 Q4 u) o) h  w) `2 _6 p& ^
reset-timer
) c- E0 `) T2 e8 K3 o) D
3 j! f2 ]# T* \/ X/ A
poll-class

8 z% \# l6 M/ a1 J1 |
3 N+ ?5 N; t5 Y# x. B! asetup-plots

; H( K6 C2 K% c) Z4 D* d) z& A( |0 `+ m
do-plots

1 Z% E/ y9 v  q; i4 ?- P8 }end
& N. B  x2 S! \* u, h
. x6 ]- i; ?0 h/ _+ V  P) p% D3 vto initialize-settings
% c0 d: n6 a& i) K; F& d" z: G/ D! h
set global-reputation-list []
$ v9 f3 U  K4 F. y

. z6 f9 X0 ~; Tset credibility-list n-values people [0.5]

* h; Y- a% Z" X' |( n4 {* d  p9 q+ `. e: j; ?
set honest-service 0

+ S$ x/ e1 s; G8 ~5 K
' l& }6 Q2 g: T( _0 M+ ~! yset unhonest-service 0

5 K7 ~6 h) q  Y/ F- R7 z7 K2 r
0 M  T; l' g7 r- |set oscillation 0
: v9 U- e/ A/ l% k, w0 ^

3 g6 \4 i( ~0 G8 z) c1 E  |set rand-dynamic 0

# f% m/ ^1 r1 ~' d: j- E* Aend
) M+ {4 ~/ R6 t% @9 E$ ^/ }; V/ c5 k( {6 ^& T8 Q1 H2 g
to setup-turtles . n4 Y$ s6 Q1 K3 [
set shape "person"
& w0 w5 o5 b* D. u7 z( A6 Csetxy random-xcor random-ycor
7 f3 Y  A& T4 [: m3 ]0 wset trade-record-one []$ I) d, x, o& _! ?
; C  |0 ], i' Q! T9 d
set trade-record-all n-values people [(list (? + 1) 0 0)]
* M: f3 _" x6 ^! f
1 p; B2 ?0 \- D0 P; ?
set trade-record-current []
& N" w. G# _: n7 t* tset credibility-receive []
8 t* K/ ]7 B+ C+ y- e2 d& kset local-reputation 0.50 k. H6 S6 D8 l: `5 j8 X
set neighbor-total 0# x0 I, o/ E# N+ s6 h: \& Y# z
set trade-times-total 0
5 s' Q3 o% U8 }) h" J1 A; ~set trade-money-total 02 H# c" I9 O3 C7 f! ^2 t2 m
set customer nobody4 T7 c# H' J- P( `
set credibility-all n-values people [creat-credibility]
; J) b: u* n. y1 ^) f$ Vset credibility n-values people [-1]' t% l8 G3 |' F; a$ E% l
get-color
- \6 g5 n7 z3 `- _+ R

& W' b- \6 Q/ p$ t6 i! B6 U7 Fend
" h( p+ U) Y+ U. F/ L9 A+ H. v
6 H$ J, d, `4 V+ @# `# lto-report creat-credibility& v' y& d1 H4 r$ e
report n-values people [0.5]" E& S: o3 z2 b, k
end
2 M& [8 _8 |* i: i2 `4 ~& m3 |0 A% L1 J' }! q( j6 b
to setup-plots
" y2 K8 o& L4 D5 O, d2 H5 i3 q% r# [! {& D$ e; }1 Z6 _$ i
set xmax 30
. [. Z- U! s# T0 Q$ u* _

# |; r% |5 x/ O$ h5 M3 Bset ymax 1.0
2 z9 H# h3 d) `8 v# l
5 v4 P- w% ?  x& N* q. ]' d/ q; n! g
clear-all-plots

, J7 U: ^! _8 X( E) {7 i: W
, _  N! t' h2 n4 E, Ssetup-plot1
% `4 o  \1 h8 Y- j' _
7 i  B8 n) b: [6 O: J2 l, @) A
setup-plot2
  n1 R! |0 ^' c  n; N2 w& P
" ]. M" L3 @1 y( p6 H+ \( J
setup-plot3

' N$ n8 W. }- R2 J7 ^end
; P# W3 Z1 q# M/ F. V, g5 b. B# w" `; S, v5 W9 L: d  L
;;run time procedures
$ d* L2 a9 T+ n& o: K& o8 _
1 n: e0 k: z  Eto go# f8 c7 J" o) M9 J/ i5 U  M1 o

4 E" s) \$ v, j0 Z  e$ }4 Jask turtles [do-business]
: O/ l+ W0 f9 s
end
6 i7 n% @# ~6 S+ M: }/ P! Y0 Y4 ^
to do-business 1 G6 Q9 Z- w  W4 u

3 O2 B  R. Q6 w1 p! @, a9 R/ ^3 s) j3 ?) r' K6 X0 p
rt random 360
; d3 y" e7 x1 L  ?( ]  ^. n# W

; X3 u0 y  T& C/ _" ?0 }fd 1
0 C- e4 i  D9 A" ?* i
2 V5 k- j6 R3 J5 a  y& I' o! K7 \, {; Z
ifelse(other turtles-here != nobody)[
- Z+ P! p  q6 s2 I' H7 F) Y% p

8 v: R+ _/ |. w$ s: X8 b$ _set customer one-of other turtles-here
% j5 z8 T& W( p8 ?

* c6 v& R' i" p/ ^/ _7 P;; set [customer] of customer myself
4 m+ {5 R- H! n$ d5 n

3 ?2 S+ Y6 f) s" |9 R! v- R3 J: Jset [trade-record-one] of self item (([who] of customer) - 1)8 K6 m0 L) l# A3 |& H( W( k4 R
[trade-record-all]of self/ E7 v5 V. N% [1 j
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% J2 Z' r& D0 ~: x6 t& E2 \" \
set [trade-record-one] of customer item (([who] of self) - 1)
6 N, K! N, D' i" ?1 r[trade-record-all]of customer

9 K3 e6 Y3 v* D5 I7 m9 g% f. N/ z, y: j. d, u9 s
set [trade-record-one-len] of self length [trade-record-one] of self

$ {# A+ A! z$ S0 Y2 G6 S) y, D3 O# `( N' \; B: d3 o7 }0 I
set trade-record-current( list (timer) (random money-upper-limit))

. w) G+ T  k3 |! q) q9 u
: w3 o% Q6 S- o9 @0 dask self [do-trust]
( S' a' ^% P! U1 y;;
先求ij的信任度
: y4 u: C; n0 x: q! U: z" J4 g. r8 m* m
if ([trust-ok] of self)$ t# Y& {9 F5 s( ^! @3 B( v
;;
根据ij的信任度来决定是否与j进行交易[
2 P# W9 \* o/ S$ |8 T) bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ F- p' q5 C& R5 b, L
- F, c5 L- c2 x' Q' s1 F+ P[

0 ?2 S" d1 Y2 w- }7 }- f
3 i6 d1 ?2 t$ g. `do-trade
  i+ d7 p6 b2 d! r# t3 j

" i$ b  `2 H4 _( G7 Vupdate-credibility-ijl

9 m9 A, W8 B9 i" N1 e% U) d5 k/ b$ P  M$ I5 S4 M
update-credibility-list* S; }5 k7 h6 N0 d- U' G
, J  _! i# `9 u4 O7 W# g3 ^

5 k5 M% r" k/ b3 X1 I) l0 E- J8 G: p; rupdate-global-reputation-list

. o: d; F3 M1 I  ~7 Y+ F( q. J4 y3 ?" V% u' H7 l. U
poll-class

  z" F: O# S: @  L4 M" i9 r& T0 f5 @& c% V# G: ], V% u
get-color
, [# {. o7 [1 w) i$ t: _4 p3 t

& B+ t$ o0 A$ O/ E, F) c]]
6 i  b$ k& P/ S  _9 ]# W2 y3 I! q9 r- l* G; J! T( A
;;
如果所得的信任度满足条件,则进行交易5 T, D2 h; Z8 S" ]
4 i' T0 J8 s1 k0 J2 q9 I
[
" i0 Y3 l7 M! ^" A
4 W0 d: d7 O, `
rt random 360

, b8 A0 ^* K. }
- Q) Y2 P4 ^9 }5 vfd 1

% T3 l, @% D4 q9 g, V3 {7 F' F0 `
) A% I/ D" t; I: g5 d3 O3 t' u. f]
: \6 u' s. n' z7 W/ a: n% o

; @' S0 ?" k7 Yend
( W& b9 `) X( O# {2 p/ Q5 y
( m. M( |8 o+ w) z# n) F; d+ U
to do-trust
* H. ]: \3 v2 m* E' Qset trust-ok False8 ~8 q7 O3 K: O

, J' J- L1 z1 c3 i5 z5 R
+ M" S& P% R, b
let max-trade-times 0( X# S8 s# Z, h' M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 P) V8 ]4 G: q' N$ ^7 q( W2 b' plet max-trade-money 0. Y' K) {$ |% Q& n! P# Z- D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 o/ n8 V- _( m( l1 A3 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 [( T! F8 {' G9 F. d+ ]' g
5 s- n/ @% M" f, s8 w0 \" y
5 O9 L. ]4 l% r1 W
get-global-proportion/ B+ ^. N$ P% `
let trust-value6 D# ?+ b% R5 Z$ I; k6 _
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)

+ u9 g" f3 q; D4 z6 C$ Y: |if(trust-value > trade-trust-value)
; w) M2 G1 g& H. t" [[set trust-ok true]  B$ z2 i6 M; N4 z. x: G
end
) y1 n) `" Q+ V3 K; x& N) G
+ o% g+ {, e; K: K! b( D$ k$ Mto get-global-proportion
) U* W; q/ }0 w% t; [+ Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ K. v& U# e$ @4 Y" v1 X" {$ A[set global-proportion 0]
1 [, h. S7 H1 I[let i 0
# `( o2 u" A  Zlet sum-money 0# m8 Q! F" |/ N4 L2 c
while[ i < people]& A% B& J, |* M1 W6 `
[
9 a- C7 t! e0 f/ Xif( length (item i
: e! ^+ @9 q. H5 a8 I3 @[trade-record-all] of customer) > 3 )

: I% i6 ], n% d* o[# W% S4 H/ c1 i2 ?5 E7 B
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" I8 K) S, I. }/ |/ y]
' Z  u5 n' t, a7 n]+ d9 W$ H# u5 T9 ~2 N. V
let j 0
: @, C/ V4 C; }% g* d: Vlet note 0
* F+ }( U) o/ C3 X+ d8 _3 O/ [while[ j < people]. P! G7 S4 A, `: V4 r+ s, h
[
, G$ s4 O; X, Aif( length (item i" s7 {7 u2 U2 y7 ~0 J. c. p! I: k
[trade-record-all] of customer) > 3 )
& Q2 r( b0 s; \: r1 @+ z
[
9 V1 {9 [0 `: T' d6 Z: G6 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 t) e2 t- i6 t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  ]2 }8 M5 T3 Z, ?2 y* N; D; C7 i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ G% K& S8 Y! ~7 i]
3 O/ f% J4 w4 }$ v7 @2 p]
: y! n+ q  M) k3 |! f5 i# pset global-proportion note
( P' {1 s0 \0 ^7 x# V]
. {) Q# _. J: H$ V: G# Y6 h# D6 yend
' d6 _6 W2 A# V) T0 x: \7 y
3 R% Y8 O4 t# I1 N# j$ u( i: [4 yto do-trade
& r9 D& _: S8 w" z2 T9 P;;
这个过程实际上是给双方作出评价的过程' M& R% C+ [7 X/ b! Q8 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 T* }8 s& s) C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 p; O7 Y9 {: [5 [7 Z7 F* J; f( Dset trade-record-current lput(timer) trade-record-current, |  T- ]9 k: a8 }, w2 \
;;
评价时间
: G& _6 G8 e$ ]# d! dask myself [
1 G: c1 S: C: e! tupdate-local-reputation
8 n5 e, [- I$ l1 {8 d9 Fset trade-record-current lput([local-reputation] of myself) trade-record-current
1 b8 P+ T& K: y: t: w]1 r# m) i  G, D' C2 |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; e- q! ~3 G' R;;
将此次交易的记录加入到trade-record-one* E. g0 ~# y: j! W: H9 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) V, }! s9 I* k8 o. F$ H
let note (item 2 trade-record-current )3 h" C) m1 ^5 B" \
set trade-record-current
/ D% [  j' U& ]) I( g. z: Z(replace-item 2 trade-record-current (item 3 trade-record-current))

; R* I; B+ a0 E; D) n  W! zset trade-record-current
5 e2 b* X4 Q+ L, F) n(replace-item 3 trade-record-current note)" E/ D3 |$ x4 ]; j* p$ u
' ]" W8 T9 M, ^1 H( M" ?

: o, g) Q" {0 d( P# \ask customer [8 _" A# l+ @' G9 s( Y# s' {
update-local-reputation
. O% F% t& r- S) M- }set trade-record-current  U' U9 `6 r2 j) v% e: }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% [& V. Z$ x5 A' f( m; i0 U
]& @4 d3 \: N( W+ t8 ^; c5 a+ ?6 j
; W) L, [* W1 O' g6 \
& }* m9 D; e  W3 [) P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ R# S/ r' I+ R! ?6 z% @: a* F
  T! j6 z: ~+ T: S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* w* `7 N! l( \* I, D! E- P;;
将此次交易的记录加入到customertrade-record-all
" G% p: a% D- V8 w7 {. kend* h# F. d- K8 f. a, {

& l9 `7 y' `: d/ B, j$ Y0 s4 Ito update-local-reputation' Y7 m  C% r! z* u) Q, r
set [trade-record-one-len] of myself length [trade-record-one] of myself
# p: _3 c  l- U. L" H8 C2 s4 [
4 O+ a7 q: G% X/ @- Z. B& g
* v# E: j8 E. ]7 g3 h6 B;;if [trade-record-one-len] of myself > 3
) A( ^0 L) _, H- t, g1 B2 ]
update-neighbor-total
3 t* s2 `5 y9 v+ {;;
更新邻居节点的数目,在此进行( b* {6 {  m4 \( `
let i 3
; O: |3 B; g6 C2 @% n9 _' klet sum-time 04 x2 S. n$ {/ c; L
while[i < [trade-record-one-len] of myself]4 N/ u. N  `2 P2 B
[
6 k) z3 Q  M: |4 |5 @set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! _8 u: {0 Q  z/ s; \' Y
set i; ?3 _# H1 u0 D9 t' v+ D, c
( i + 1)
# b; n- _9 h7 w6 Y9 f! f: x8 s' t
]
/ r$ ]/ }6 l0 c9 |, x' {1 [let j 3  `% V5 k- `3 R9 e9 u
let sum-money 0
- u+ K" _4 J* _: a) J/ c2 {: wwhile[j < [trade-record-one-len] of myself]0 G* J5 K& B1 r( S8 L
[8 z7 F4 t' K# t: R' Q6 R
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)
# ?2 Z6 i+ d% w( q7 Wset j
0 H( @  f$ U$ K1 m6 t( j + 1)

  x6 E% K" d1 ?0 q% y]" ^1 Y3 X3 K$ Q  \
let k 3
: x  y' M$ X) B9 k  C7 U& p% F) glet power 0
$ M/ i/ P; D! p2 x8 F& g$ T+ clet local 0
8 k4 H& m! L1 S6 Swhile [k <[trade-record-one-len] of myself]' u/ Y& d) r* F; }9 {
[
: ?' h: N( E7 L0 p, {0 ]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) : J, z1 _( ^* i+ I" F: s3 C$ b  k& G
set k (k + 1)3 h% k0 T' `1 J; V/ N; u* x9 @% m
]5 o& S" v* h! }6 b* _  H4 Z
set [local-reputation] of myself (local)
8 _+ v$ s7 U7 U. Q2 S! ]# Nend/ u0 e0 E1 ~& y* K! x) f$ ?
; f; e6 U( v! h, e4 G
to update-neighbor-total+ h) b: Q& r# `, K. w9 A

$ U3 h& _& D3 W8 C: Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 j- N$ k* u, G  V- H: F" g  q/ e& o( J# d0 b6 ^6 K
$ y  f) N6 r" f$ Z- c$ B/ G0 j
end- o' C& o/ Z4 J
. n- |6 L) R4 h* [& W
to update-credibility-ijl & r8 P* ~! H  Z2 ~+ ?- v
8 M% d$ B) u# E8 }$ V
;;
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。
! R2 f) ]; N' P0 H( L3 klet l 0
: E% u8 t, A6 M: C% Q. W* Nwhile[ l < people ]
; i/ B) J$ ~- d/ @;;
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0 ]% p7 u; X# Y. G; o& Z9 ^
[: A# I) ?4 p% f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 ]4 v& S" i. _6 S; R
if (trade-record-one-j-l-len > 3)
- i4 D- L, a0 I9 v8 `/ @- m% p$ O/ c1 }$ d[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
6 L# E, _& y/ `' @7 U8 ]let i 3: T: P) \8 p6 U) L0 G
let sum-time 03 V2 D' Y; Y7 X: q. y8 K  |
while[i < trade-record-one-len]& r: N& K# \6 W3 S$ C! W
[
5 b. d2 v! p2 t" iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 {; X% D' |8 Uset i2 y0 w3 g' |' w$ W) q* M
( i + 1)
* R4 J6 I5 H! y! y, s. W
]5 _! w' S( M/ s  R! d5 d8 F
let credibility-i-j-l 07 a5 @8 S: F* r2 R' K$ v. n/ B. [, p
;;i
评价(jjl的评价)
& b+ H7 o$ ^, |3 Plet j 34 x: D/ V( t% h7 @
let k 4
4 P; [% o$ K+ O2 Q$ g/ \$ D  Awhile[j < trade-record-one-len]4 t6 H2 q6 o+ E
[
! ~; ~' `9 m6 B+ A# X' g! L+ ?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  ]" G' g' v+ s& Vset 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)( G6 X& N8 j! g! K7 g% s/ G
set j" T0 ^* n) X: i6 ?# ?
( j + 1)
- Q1 a8 o" d& X
]
& ], |. V: x1 xset [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 ))3 O6 k: M- C7 e2 s6 v. l  L

5 e" k+ N( ~& L; s' d, W

; i8 Y+ q3 v; zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), S: p- w! @% N* F. \
;;
及时更新il的评价质量的评价- w0 ~& I5 A, N2 a! o8 y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 K% Z! @5 [& W. i6 aset l (l + 1)+ [; g/ z. A) g5 R( f4 N' i+ t
]& P8 \5 {2 f7 P
end
8 ~: g' x, K  r( r- T! t. f
: Y  [7 ?  a1 [2 Z# U. ato update-credibility-list3 O' L. B, h9 V2 Y* A7 Q
let i 0
, M/ L) W) l" [( E3 g: gwhile[i < people]$ A7 D$ a  @' U" F7 r  B7 v0 T2 q! n
[7 L7 A. Q& _7 E2 k! q
let j 0
0 I. X5 |& S0 I3 h4 w( g) l. rlet note 05 C7 q$ e. k3 d+ v% p
let k 0
3 d/ m: z" V5 Y0 _* J3 |;;
计作出过评价的邻居节点的数目2 t) l; U- J: Q2 T9 i
while[j < people]
/ j1 [" M, v( }$ T) N- `[6 {$ B; G# d& K* W9 K
if (item j( [credibility] of turtle (i + 1)) != -1)
% k7 J' ^0 Q5 S6 T;;
判断是否给本turtle的评价质量做出过评价的节点
2 e0 @/ {( K5 @[set note (note + item j ([credibility]of turtle (i + 1)))# J1 ?6 z7 l$ y2 O! d! I/ L7 A( s
;;*(exp (-(people - 2)))/(people - 2))]
8 K; y6 g: K; W# W- n9 D1 j; G7 n
set k (k + 1)9 ]) o* l4 ~0 X0 i
]
0 H# q3 a. H' c6 P, _set j (j + 1)
, J' k& @$ S2 s]9 q- @3 c0 W, g- V4 f7 u5 ?
set note (note *(exp (- (1 / k)))/ k)6 u. S% C/ W6 Q) \& a
set credibility-list (replace-item i credibility-list note)
% @, [" y6 F! K& j% oset i (i + 1)9 |7 j" Y6 I( L( ^7 o
]
$ X! \9 d6 \. t' m4 aend
. e- L5 j3 a; ]/ l; S: G; k. [8 Z
6 s4 d6 a' r& Y, Zto update-global-reputation-list
) u0 w0 q0 X  Y- y5 `9 D5 f5 glet j 0
# x4 U0 A0 r5 z/ {0 e0 L1 o4 Ywhile[j < people]+ a6 H- H; |8 a. ~8 z; c
[7 W8 ]  B& Y  {+ E2 b
let new 0# l  M. |' Q# @# `0 p: S2 M& d
;;
暂存新的一个全局声誉
, b5 j! X# p, U: \& u& w4 glet i 0; n& c3 `2 i# T: N1 y* |8 M# J
let sum-money 0
. U' o5 y% g' \7 I* E: i) @let credibility-money 0
5 d6 D: }4 q! Cwhile [i < people]8 u) p: f+ O8 Y
[- W0 S7 E) k- B* i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 ^( e, l3 C$ C  c6 l3 U9 ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' j2 N3 X  K0 z$ f  o0 M
set i (i + 1)- E9 |3 ^/ \, _9 q; _
]
' c) o3 g( ]8 X# m/ T+ Jlet k 0) q# u, w% ]' d+ d3 @: F1 ^
let new1 09 q, I( z$ ^: W# Z5 E% L
while [k < people]# k3 X- X5 V( _6 G# x/ H7 Y
[
- ^& z$ t( [% D+ G9 X' f: U. Eset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)9 U- ?4 I8 v. _1 N8 X% A1 [8 A
set k (k + 1)' l- \9 E1 f3 r8 g6 @" p
]
+ q/ @: z7 z/ b( V+ s6 G6 W( Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 Z# s' u) ?* N/ B' t
set global-reputation-list (replace-item j global-reputation-list new)% d, X  \5 V0 i% s) n  O: Y$ P
set j (j + 1)) t3 R% e! Z1 J' L* {4 T+ ^
]
' R5 }1 X6 h, K- O* V7 \end
& S# Q$ Y, O) ]4 s( U4 P
9 W% ?0 k# f) e3 j5 D0 z0 [! x3 S, b
" @3 p; w& g0 w- ?& ^" ]! g5 x: [5 X! l
/ A( h. `1 Y" m5 P( _6 Yto get-color# v& ?" j7 B$ _! l
3 z  H; N& N/ F9 E" r) i  Y
set color blue

9 W+ p: m1 V1 _8 r) oend( J9 |  |- q, }6 N8 L& Q
, N9 A  a8 v: ?/ h* w: h- @
to poll-class
* @, Y2 P' q. O8 @; Pend) l) V4 H4 L/ `) `* m
6 u4 e  @0 I) b0 a
to setup-plot1
& t" P& Q, J/ \# C8 M; }/ d$ E4 g% W/ T8 J5 C3 w3 Y- I
set-current-plot "Trends-of-Local-reputation"
4 t+ |( D9 t- ?" c6 ?
+ s2 c  ?) B) A/ A2 s
set-plot-x-range 0 xmax
4 I& p' v$ B  X) r2 W) ~
" {3 H0 H/ A7 R4 q) ]+ t& Q
set-plot-y-range 0.0 ymax
/ ~7 T* T9 g( N
end# N. e. w0 k- ?7 A% H1 ?
8 u. s  z/ ?' u5 W$ l
to setup-plot2
% \6 T' o1 a5 b4 r- X  Z" h& Z" I& C1 z8 S5 Q* `0 i, J9 I6 D3 K3 i
set-current-plot "Trends-of-global-reputation"
) P6 d; n5 A. R! Q

" J9 l, `8 S" b, |% jset-plot-x-range 0 xmax

- Y0 e+ J( W# V6 R
* W) y6 e+ x( |- M7 x7 cset-plot-y-range 0.0 ymax

$ ~' ^$ N- l+ ^end
. `, |3 U. H+ |! O- g
. Q5 ^" L: n, O3 i& Bto setup-plot3  o" W- a6 ?6 t7 g$ K$ C

% O7 e2 n9 T0 H3 I1 P# b# jset-current-plot "Trends-of-credibility"
: e; U& H0 _3 f' L
# p: ]5 g2 q3 d5 c
set-plot-x-range 0 xmax
' {% N2 q% w. ?, m9 C
% L4 b8 C2 c4 m( Z7 `5 \
set-plot-y-range 0.0 ymax
% `- L9 i. R8 `: L
end
4 z+ l! h% y& |! `# M6 n8 z
: l- ?9 H* P4 z& X) oto do-plots( J: f. e9 i: \4 t  r5 ?
set-current-plot "Trends-of-Local-reputation"
+ z& L% l3 Y' m4 Z3 Qset-current-plot-pen "Honest service"
0 s3 l1 d9 D2 f+ ^- W$ W: ]end7 d! B- B9 m: t, ~  p. a
& Z% ?! B3 w5 v8 b, e
[ 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.6 I7 w' U6 f% @2 L* W7 v
$ W1 a0 y0 Q" r# F! |8 c6 W
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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