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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:! |1 P# S: X" W2 b
to do-business
- @3 E. s3 K4 S rt random 360
/ e+ W4 [# U# _6 @* `* R5 ? fd 1. P* c. E5 x* U  P
ifelse(other turtles-here != nobody)[
$ b- |9 E3 B( P/ r$ c0 q; 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.
7 [- j8 q5 u( g: V. w8 h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# [/ z7 v- o8 L2 d9 Z8 M* A1 x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ q  q; |# p0 C8 s) i: @. \   set [trade-record-one-len] of self length [trade-record-one] of self
" K; `# |" q; {* n   set trade-record-current( list (timer) (random money-upper-limit))' h1 A% K+ U  x4 t3 q

/ p# G  [( Z$ k) k3 l问题的提示如下:
$ U$ l) M4 n, V
- p6 h0 Y0 I& K5 Gerror while turtle 50 running OF in procedure DO-BUSINESS
3 b+ x& G& S: r2 a$ Z  Q0 M  called by procedure GO
6 O2 S4 V7 Z- `1 l/ q6 {+ gOF expected input to be a turtle agentset or turtle but got NOBODY instead.
  @9 _& ^2 U8 ]- M# ]& W' a$ g3 ]
(halted running of go)2 C* t% q% |1 v% l  ~2 G5 X
6 j9 b2 \7 o  \0 O3 ^2 ^2 s
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 y1 m! L+ @7 n5 x0 t2 |
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
' o1 i% L/ M, F% A+ `! g6 t" fglobals[
& x7 Y! B& l5 e' B: H8 Cxmax
4 Z' d: t2 N' ]) }' r/ f- Kymax
( S" C8 M5 s) y1 j8 a- F" bglobal-reputation-list! j( r6 X) `0 f) |; k. T' `

! e+ X6 i# @5 y;;
每一个turtle的全局声誉都存在此LIST
0 p7 t  m/ E7 z$ w4 z! Scredibility-list
7 L6 i# M$ y: G( a& L& e. `;;
每一个turtle的评价可信度
' d  n! Z2 y+ P' B) r0 Whonest-service
5 ]" L$ O% K8 ]& eunhonest-service, x8 h" I& |6 Z  s& i
oscillation
) J5 S+ m$ \( C& u+ X2 xrand-dynamic- Z- b0 ?% _$ s* f+ x3 p
]/ `0 \" G, _& A' v+ ~$ h
; r7 R3 l% K; R/ {( k( ~  V
turtles-own[
. `3 U& }( r& z, Etrade-record-all
. u+ ], a4 g- P+ @;;a list of lists,
trade-record-one组成
7 S! u9 E' Z6 W# ?% D  n$ ytrade-record-one
! }) t8 c5 a. D. 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7 \5 Z# Q) ^: f! Z9 \, i

/ x7 A" q8 T4 U) H4 C3 R! T" i9 t;;[
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]]' u& p* q; j: ?0 z0 w+ l6 a( M- u
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]9 w$ d+ ^+ I' y8 d9 G( F4 K- ^
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
& r# F1 j6 W: Z5 m/ vneighbor-total
6 X3 Q) ?' b" G/ k9 X% I;;
记录该turtle的邻居节点的数目
1 ~! o+ `0 V4 p3 u0 Ntrade-time
; G% F1 D; H7 v5 D& \% ~;;
当前发生交易的turtle的交易时间" G8 t& W( @0 [; H. i2 h/ J" X
appraise-give; x! T# @/ X" y. d
;;
当前发生交易时给出的评价7 ~- k6 h: Y. R- ~2 J+ I
appraise-receive, x" E2 y. @( I2 _7 }" y
;;
当前发生交易时收到的评价
9 I4 G  {: h" \+ P& O& c+ ~* jappraise-time
; n6 O8 ?/ O  ?$ @1 G; o% M9 h;;
当前发生交易时的评价时间+ m& G* W8 [% N% P, @% G9 F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, ?$ P- Z( j; G3 n
trade-times-total" ^1 o+ U  a  j4 e( P
;;
与当前turtle的交易总次数
/ @; B( e6 O% gtrade-money-total
# n8 o0 p8 v* i/ d$ e0 e/ a* x;;
与当前turtle的交易总金额
0 g9 E) m/ v8 \1 klocal-reputation
! Z) ?1 h1 \! ^1 }global-reputation
& ?( C' o: A9 jcredibility$ O- J+ v& c* J/ Z8 i4 e
;;
评价可信度,每次交易后都需要更新2 U- Z! p3 T' r
credibility-all
1 q) Y" A5 f# a5 G5 B;;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 |' o1 I. g( S6 j
1 r. R/ k! d2 w8 @;;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+ T: x3 p+ Y9 P
credibility-one& h; H& D: z5 O4 ?# {9 l- X+ ]0 y+ {
;;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
0 k$ A# p% W+ i2 u0 m5 xglobal-proportion
  x6 O( @6 P, d& M4 V7 r) |1 {customer
& S! Q( o7 R2 x( J2 X% Fcustomer-no- I& A! ?8 `5 ]" T. A  |
trust-ok
' |! o* H$ t* t! M& H$ }& v; rtrade-record-one-len;;trade-record-one的长度% f5 z7 [3 x2 d. t8 b2 b: V
]
4 e7 }/ R1 B1 F1 U- A7 Q6 ~4 [+ e; q: p9 _: A' g* G5 d/ N- V. G
;;setup procedure5 U0 }* W$ l. N4 ?7 H

: Q/ |5 }% T, P0 ?4 M# M5 {to setup( M; U, D' ^, i

; i: u6 m9 b' Z5 u  z. Fca
  {1 m3 S) ?! Z

: X- @+ r3 n! J, ~/ p+ `initialize-settings

& g7 o+ S, u8 \: N0 S2 Z% {1 M# I7 b0 h. u* P
crt people [setup-turtles]

% P* |' Y! e+ C$ v' s! ]
0 f" n, q. O  hreset-timer
5 D7 H8 L6 m- d( f1 H

8 G+ g+ g- s7 Q% {3 Ypoll-class
4 }/ C( f& @: v0 s4 J6 N) F& S& z

- f7 k  \' {/ I* x' Xsetup-plots

$ E) u; w- Q+ D2 |
7 Q0 \# D& |  edo-plots
6 _! t$ \& D: X
end
2 F. E; J  y5 i2 l. j9 P& \3 B- l' q3 l  K' [
to initialize-settings
; v' n) ~, \% n6 k/ c6 U- K' m
9 S1 H" |+ D( {. d) sset global-reputation-list []

+ o# G/ E9 y" B0 {6 @% e$ t' ?* e3 k5 h  p
set credibility-list n-values people [0.5]

+ k; u# a1 @) T8 U* m" E: a1 ~* v  S. w7 j# D+ B+ s
set honest-service 0

& L! f7 x8 z4 b0 M2 v1 j/ ?1 N" O; M4 B+ b8 Y/ e/ H1 C
set unhonest-service 0
, r& }0 r: h2 c6 t) c+ I* F
0 h3 u, `/ q$ N4 {' S
set oscillation 0

' i0 W: Y6 r5 Y& C" g. J/ @3 G5 V8 [
set rand-dynamic 0
0 ~+ e  I+ ~4 ~& `1 @  R
end' r2 s4 [& f! O9 m
$ I' D* w% I4 C2 d0 ^/ a4 n
to setup-turtles ( P# Q, s+ \. U
set shape "person"
8 v* ~' b4 m/ J, hsetxy random-xcor random-ycor% s. P( L; ^% e6 R6 ?( `
set trade-record-one []! P/ R2 i# [: Q" Q2 a

9 Z2 T3 F/ b5 K4 D% E& A, Oset trade-record-all n-values people [(list (? + 1) 0 0)]
0 }/ H* ^2 X# r9 g( h- K; y
0 x# B7 a1 b) e" c" o6 a
set trade-record-current []: F, T- m! x' T1 }2 b
set credibility-receive []
5 S6 W# C1 A0 \5 [4 w: ^: uset local-reputation 0.54 n2 z% v/ T+ X9 c$ \' P+ ]
set neighbor-total 0
  j, O1 y* u9 f9 {* n2 Gset trade-times-total 03 W% ~' u6 \# R  o" s, N9 ~
set trade-money-total 0/ Q% B3 Z. H$ `7 z! e7 z0 E
set customer nobody. G" O; z" S/ R8 ]* V
set credibility-all n-values people [creat-credibility]- m" r* e2 Y3 o" |6 d, x
set credibility n-values people [-1]& g+ T2 P% H/ r5 b5 Z
get-color
0 J/ h2 C4 I: _6 N  q

3 S* Q; k4 \9 v# @; S2 L% l! Qend( |* Y  j0 d7 }: u& Y
$ b5 k- L& }1 R
to-report creat-credibility/ K4 v* u$ y! ~6 S0 G% L9 E
report n-values people [0.5]( c3 u6 b( }  [8 c4 ~5 v0 e
end4 |4 V1 e& i" {. \" c
- @* m2 E( h  L
to setup-plots( U& D# U4 A$ r' [
* F/ {8 j" D8 f: S
set xmax 30
1 [4 ~; L! c9 g  f' y+ j

7 f) k- R- Y" Jset ymax 1.0

& p) ^5 ?5 j! ~/ V+ r- T7 l9 {; ?, f1 U6 g0 `
clear-all-plots
7 p. u7 Q8 ]# N
. o4 M7 f# d: y- O
setup-plot1
1 s5 {) N2 X+ I
  F) f: ]$ X4 a, I5 w/ v7 U
setup-plot2
" w8 S! Y: k& M/ G' t" I- O. H
  _& d. s: }+ R+ y4 x) J" K: f
setup-plot3

& C0 q+ J- p+ D$ g6 q% mend9 u4 P' ~7 T* Q/ W

) B# c7 g% ]1 @;;run time procedures( }' m$ _. r* v" g; |% o- c

. E4 h/ {4 [4 s( D. V9 o" [+ jto go. x  S* j+ ?5 S7 L

& r9 ~9 q, Y8 D3 s8 `& y6 j# e3 Lask turtles [do-business]
$ O# l7 G- q& L0 A4 \7 w
end
8 d# N: M5 `1 k5 w( j" P
( i+ M3 y3 e% a3 [to do-business ' l$ l- X, ~3 N
9 \: `' |- K4 ?8 A
3 F3 g( D# U- D3 F) I% D; m8 T8 \
rt random 360
; ]) H3 n2 U; m/ P

& ?* Y$ v9 ^" Vfd 1
/ i4 p$ M1 X, P/ e/ D- j/ ?
2 a- Q0 }2 d$ t# Z
ifelse(other turtles-here != nobody)[
4 D9 t3 @# S( U3 m$ H* D+ y

4 h. H+ {. J% E/ @+ z8 }: q; Jset customer one-of other turtles-here

# w3 L# n1 ~. ^! b: ^3 b0 Y5 V9 f- R5 d7 `1 \$ X
;; set [customer] of customer myself

5 A6 `8 a% l% w" `/ F! u. @9 ?  y$ r$ M* H( O5 T) y5 z  Y$ o
set [trade-record-one] of self item (([who] of customer) - 1)5 b+ i% `) V8 p! U) [
[trade-record-all]of self
% O* Q) U, k/ A) [;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 B( C4 [# r( l. s6 J  L, k
* n  X" f. D2 L* s; u0 e3 h3 Z
set [trade-record-one] of customer item (([who] of self) - 1)( y# {% M% j" i- t  d3 K
[trade-record-all]of customer

" Z; o/ {: y/ G" {8 X1 h( T( `6 m$ q5 o# e9 T) u! A
set [trade-record-one-len] of self length [trade-record-one] of self
. \" R' C  E1 [

. P+ d6 j. F- M  Lset trade-record-current( list (timer) (random money-upper-limit))
5 A6 i0 _% q! D
/ |" X3 v( r% v# g' K8 `
ask self [do-trust]4 o9 z$ p9 l8 ^. A
;;
先求ij的信任度
8 E' t6 z! ]0 b( m8 P8 k% z9 _. `$ \& z6 g; D& f5 m& o1 o
if ([trust-ok] of self)
- ?  X9 a. v/ h2 n. G* |6 F1 c+ O;;
根据ij的信任度来决定是否与j进行交易[
" J2 x5 |7 A7 u. X2 @. o& yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 W; T& }# U8 ^) Q& |4 @6 P- O- X! L! C, p+ E% I
[
! d# j. d! A" i+ [) U

) N9 |7 F. L, @0 `0 U9 _do-trade

# _8 W" L- P1 n- l3 L- K# W6 ]! d3 ]
update-credibility-ijl
1 B; n! E) y4 }' f5 E2 n  t- a0 T& ?

! a) I* p$ g! P6 X  G5 Mupdate-credibility-list! A- g' t2 P; b$ h1 M9 h

$ a$ d+ g1 {" Y$ E1 Z
9 a2 B* u; r1 j# n' Supdate-global-reputation-list
5 I3 {; G2 c* ~; z6 s2 ~' x9 K
8 e8 ^5 s, I' L% r  y! M
poll-class

1 D/ D( K+ o; E8 n2 i7 H3 H! v
get-color
0 W8 J! P+ d: Q
# e  Z. U2 z+ m. {- ]: s
]]
2 K( ]2 Z- @8 F6 R; q) o9 u, l* b# }- d- C2 F' U
;;
如果所得的信任度满足条件,则进行交易9 S7 q5 B8 u- ]6 q
2 [9 s) ]8 i3 f. X' D8 E1 w
[

2 _6 d7 o: K5 Y& G
4 M/ P5 Q1 Z8 ~* f. h9 Xrt random 360

& }& t1 W+ O# V2 m1 e# K% V) u/ D+ T6 ]) N# n( P/ @  }9 u! v
fd 1
  X- I" y: N3 D6 r/ [6 ^. C+ M

- L7 H6 e; B( P8 |]
( L9 v2 G* m4 }9 q/ h: P3 C
8 z. y; `& s- _
end

& }3 r+ P8 j: `8 _- Q6 N5 H. H- [& ^/ k  G9 p% ?6 q- {& Q# _9 r
to do-trust
7 B1 y# ^) _9 i9 Z/ h  cset trust-ok False  o2 d' r8 e0 U: m+ Q7 J" N

9 S* n% z5 B2 w3 [% x% v

$ h2 C' X: m8 p' b3 A! s" d/ |- q3 [let max-trade-times 0, D# z  p! a! W5 Q& O  ^' _
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. p5 \9 z$ q; Ilet max-trade-money 0
& M- V/ w( }& w0 p8 jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 t' \$ Y2 U8 ~8 ?; h* S: D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 ?  ]6 |! F0 Q7 W; m+ L; r; X- p

( {8 p5 c- y2 r6 Uget-global-proportion
) }! D. E% O5 g; rlet trust-value1 b! {( u2 d6 J/ g, ]
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)
. i  J( X' ^& F7 f
if(trust-value > trade-trust-value)+ p) ^4 b8 c8 L8 k+ |
[set trust-ok true]  |1 }5 l- u& I( T
end7 ?" s6 _9 t6 ?( N

+ L9 L( G8 [1 ^9 g! \# u: _to get-global-proportion
# a2 d; d% |: oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 a/ i1 H7 G/ L$ I' G9 {/ O* W[set global-proportion 0]
$ f3 K# n+ Z  }: \[let i 0
2 M+ u7 ?4 \% f' J- B7 \: z0 alet sum-money 09 D2 l; X, `* A8 F% k0 u4 o1 Z
while[ i < people]; o8 w  ?. w( A9 x) O. Q
[
/ @: E& X* [0 S6 Yif( length (item i
; ^$ g0 g$ y$ }- Q  C! Y[trade-record-all] of customer) > 3 )

. `' @9 `7 T- A; X2 \! Q% M[
& Z# b6 I' Z8 w" P" E% }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# n! o7 O1 B; m/ c5 W, K]
3 E, R; `; X0 l" t! U( o* F]
, `' i& Y7 K! H: W7 u8 L2 Vlet j 0
, G& t- o/ u7 m+ [1 e' a& c% g. zlet note 0
" e' f" q+ y# ]. |while[ j < people]
# [! p0 [; A8 A) \: ^; V[
) H, p+ O; V" ?if( length (item i
- g: S: P- c- m' H: P[trade-record-all] of customer) > 3 )
5 `% U) N) y" @' i; N5 H1 ]6 t  ?4 a
[& W* u/ W0 V1 |. X, H5 s+ V; A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& L! u5 R( x% u" ?* b# j4 `  Q) q2 s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) E- `' w$ M- d2 I& `2 ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 U" i3 j% }; @8 s
]
- x' D8 D3 n  k# C" v% S0 ?$ f]' G+ ]6 A; ~4 z7 z4 z
set global-proportion note9 s; h1 n0 N/ I! u2 d
]
1 s! ^  F: b2 b/ d: Eend9 p  e% Z3 p6 @1 y; N
9 X6 J: O7 ?( U6 k) T( m' k3 J# x
to do-trade: o/ ~$ X4 H  h- v0 w
;;
这个过程实际上是给双方作出评价的过程/ _; S8 U% J2 U% C5 w/ Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 }0 {1 D6 o+ e3 ^* jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 a  T4 o8 n3 g3 ~  @1 Aset trade-record-current lput(timer) trade-record-current
, B# g7 N6 r* O" t1 T4 G;;
评价时间, z9 i! p" K  F' V
ask myself [  l& C. \) t) z6 ~5 b0 \3 E+ f
update-local-reputation! ], M8 c- W$ F, Y4 Q' _' p
set trade-record-current lput([local-reputation] of myself) trade-record-current* a* f$ i) ?# Z8 N' M1 g
]4 c! m. z# m$ ^+ z9 l* k2 t0 E
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& t7 b3 c9 {3 f7 ]- d
;;
将此次交易的记录加入到trade-record-one
# o6 d- h4 w* @' M2 E& Bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- T4 D* g4 D; L) I; f1 ylet note (item 2 trade-record-current )& A& N8 S; p! b/ {' w
set trade-record-current
2 w- d3 G  z4 y' F9 V7 n4 e(replace-item 2 trade-record-current (item 3 trade-record-current))

/ }) C1 J- i. Yset trade-record-current
! V1 n9 `' b) H0 V' _1 E9 Y0 |! W(replace-item 3 trade-record-current note)
4 i- k6 F1 s" ]1 q; p$ S
$ J& s* o, c# I9 \7 U. z
! _; z; ^" x- w$ O
ask customer [
4 V) q4 U, ~+ V0 i8 tupdate-local-reputation
) T4 z; Y" p3 N; t, g. S8 ?set trade-record-current
+ r0 g8 h/ E" j' G( `. @. m(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 h  p1 E& F* Q, n8 j/ L]* `. F/ X5 H# M7 |5 Y: X; M% A
( |/ {5 t) Z. J6 K

6 s/ w) U/ J2 @, V/ Q( I2 aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% b! W- L$ X( k0 Q" Q
& X, ]' B0 [- k) w
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 B! y* E. k+ Q) V
;;
将此次交易的记录加入到customertrade-record-all" K5 Q: R/ o! \3 J1 d# v$ J
end+ O  I5 {" V6 d  O) v; l2 M

! C7 r; L- V6 z% I& {  rto update-local-reputation
: B, [( a& A, j* Dset [trade-record-one-len] of myself length [trade-record-one] of myself
9 z) w8 i  Z6 ?* F8 |$ {9 s
0 M/ g4 g- p7 D* `8 ]
" v* F! I  }( t! O9 l' f. e9 y. G;;if [trade-record-one-len] of myself > 3

* l/ e4 m' t1 Q$ P' ^5 |3 a" wupdate-neighbor-total; _! a9 w' t! i; [* N
;;
更新邻居节点的数目,在此进行
  L0 b- h0 I2 N  t1 clet i 3
9 K' A* u6 P7 C6 Plet sum-time 0
. V3 E8 V$ ~- r+ H+ q+ q$ \4 ~while[i < [trade-record-one-len] of myself]
  f! ~# G# N# o+ T[( g& ]7 }% \  ^2 i# n( v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( I; I" ?* n1 V& r$ d. M* P$ Z$ F$ v
set i! L$ ]3 o2 k, {" H' I
( i + 1)

( l4 {! W  z1 U7 ~0 a$ l]
$ h0 S" g2 B* p4 Vlet j 3/ b7 Q& ^+ U4 i
let sum-money 0# G) ^; R% I% F; K7 n& s& j
while[j < [trade-record-one-len] of myself]
0 C; c2 Q+ X' \' S[: p& s( T  Y! l; D* \/ l; z
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)
7 r% C: T9 `% w: v$ N' n% ^set j% X5 p% k2 K! V% p& x- S. j1 c4 [# w
( j + 1)
& L& i( z3 s  k, c
]
4 U4 d# g  B- v& E" Flet k 3
( a5 v# I  o3 M9 j! k/ Nlet power 01 D8 H4 q" B6 @. v8 ~4 ?/ o( }# z6 j
let local 0' N6 s. h- u% i6 ~/ @
while [k <[trade-record-one-len] of myself]8 P5 H# x1 m! w5 J1 |3 c
[7 R! l5 Y4 C. k! S# s. \
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)
8 C/ b; m; E/ F9 c3 r: \* u! `set k (k + 1)7 J  q) O# @  Q- L7 j/ Z
]
7 ]. j, c- A' G2 W7 |# Oset [local-reputation] of myself (local)2 E8 ^$ {2 l% a) a% ~3 w* K( g7 G
end+ O1 c, }$ P! V  y& Y6 t

0 i0 p# c6 x2 \: j# \5 sto update-neighbor-total5 O# Z1 D4 a2 N. Z
: R3 V7 k$ m2 Q: c8 O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& {7 C+ ?2 J5 O& i: c( t( h
; u6 y" X7 q4 s$ f/ a4 L
# R6 `# _: ]# i! |4 p
end
% m3 \( V; e7 w0 F% n
# {2 s$ p- ], x2 M1 s9 f8 A0 sto update-credibility-ijl
# q5 S: I' h( G! C! @2 |: ~! @6 y
" P$ \: N% B. c) g- 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。
) e. O% u  B- |0 \, g0 x, _$ Clet l 0
- o# h7 ~+ C3 Y3 `3 _while[ l < people ]2 T, a. W$ Y- g  B" c* @+ S! y# @/ J
;;
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" V+ G6 p! a. j; G
[
, n! c2 g$ ]7 d8 ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' W9 ?. Y$ {- G  G
if (trade-record-one-j-l-len > 3)
6 V. u: s/ t8 K: U: V# F) A  s[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% ^1 t. H) ]" J; y
let i 3
1 Z1 R+ ]* V$ E. j0 ]let sum-time 0
2 n- L5 p* v. w! r* \while[i < trade-record-one-len]
9 \- y* c% h* K. g: W[) {$ T6 v# `# \" K, a# N+ M/ A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 i, q0 q+ h! M% v2 a" u
set i1 |& v5 @1 b! Z& m7 M
( i + 1)
/ i) a; X$ J; C# p( H" S9 U. G
]
- E) k0 W. @6 \, Z0 v6 u4 V" Vlet credibility-i-j-l 0
  K6 m# S9 J& ]4 }$ {  ~7 B7 l;;i
评价(jjl的评价)4 y+ P1 H+ y& H" r9 p
let j 3
7 ]0 p) p9 z9 Flet k 4- j+ Q- e( I$ w
while[j < trade-record-one-len]
9 _$ N; d1 m- I% S" G5 g4 V1 r8 s[4 T4 n! {/ E# o! q# |! T( U; u7 C
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# w6 w; d( |  F! R( F1 Y5 J- D+ R
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)
% ?: l9 @/ c" [* ~set j; e! h5 _5 M9 S' i/ v7 T  T
( j + 1)

0 \  F/ t4 V; V! T! J" Q) ?]
# B! P' w9 E: [$ i( Z- f' c2 b, E3 tset [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 ))
  @) g  E1 @, R+ |
/ o/ T5 \4 P* p7 q) ?

4 I, k, T9 ?" S% h( qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- y: y& v1 X' g/ R, L;;
及时更新il的评价质量的评价4 r; i# @+ G1 ?! j/ J8 I; I% p7 F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  P' ~6 d8 n/ G0 @
set l (l + 1)! U8 T9 ~: `$ _7 p& L4 j/ K% p
]( [) H; w" v# u
end' p- ?* w  W; X3 V
7 P$ i( e8 d5 n& x1 l$ W
to update-credibility-list) i; l6 A( I, F- I  Z' I
let i 0* o; x8 E' c( f! i/ `
while[i < people]
# _' m3 Z5 Z( m) t$ ]0 c[
# W3 q& G8 t! r+ O1 tlet j 0
8 v; T$ C' Y1 L6 y6 a6 i+ o* |0 p8 F, Q: slet note 0. p( M8 s9 z* t  F
let k 0
& e# t* [1 S4 Q$ [, E8 A4 H;;
计作出过评价的邻居节点的数目
  p; F, S1 b6 Z0 Rwhile[j < people]% D! Y! L! w( N, U  W$ J
[
) k6 Q0 P" J( L4 qif (item j( [credibility] of turtle (i + 1)) != -1)
( D. @  [* c( D: p; K;;
判断是否给本turtle的评价质量做出过评价的节点
6 ~/ C+ b- m1 q# K[set note (note + item j ([credibility]of turtle (i + 1)))
4 `( X8 N- `) a2 M) i;;*(exp (-(people - 2)))/(people - 2))]

% M  d8 x3 ~9 D" X3 d* Xset k (k + 1)
4 e; A. \$ m0 p' \6 o]
% z" S4 Z$ N9 yset j (j + 1)
% F# h6 }& u+ ?7 _+ [8 q9 D! k]
) o' U4 s2 |' b2 P6 n! \$ mset note (note *(exp (- (1 / k)))/ k)
3 @/ i& O4 v) H; W  Y# p& Z) H) n, u; cset credibility-list (replace-item i credibility-list note)
5 O4 N% S1 J9 i8 Y& f# h; {set i (i + 1)" e( `# m& |$ z
]' x8 A) t4 U, g
end& U  K; A4 p! D! @8 G. V& n

; g/ P2 O: u. k8 {! H  q" Mto update-global-reputation-list3 |- p7 |* Q+ s+ Z
let j 08 K- |* t$ x# F) w1 E* l+ X
while[j < people]% b. y4 V2 a$ X# C! V  A0 q
[
/ e2 ?6 |# h4 p2 Y2 k& P5 c9 Clet new 0% o' ^( |" ?" G( a7 }: c( e' q) U
;;
暂存新的一个全局声誉
; E" G/ p/ o1 R: k+ V: o: m9 Llet i 0
9 s' j: G0 d5 |* n0 a1 m$ w2 `let sum-money 0
& h: M* _( y0 q, L3 L' o8 `$ @let credibility-money 0- T! A0 O' S% K5 h5 Q1 u# N
while [i < people]
) b7 c  {  i) o[0 T, B* F5 K% [" O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 t& M+ W7 f& C, a! ~8 K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ q; m5 _: r* G5 ?7 o
set i (i + 1)
# b/ P* b7 l' e1 P) o- M( f" E]( o; s! f& \( I7 t2 J0 ~7 o6 b9 V
let k 00 p- s$ t! \8 |! y
let new1 0
9 D( t* Y' |' gwhile [k < people]
: K0 U8 V4 f7 A[
; m- ^/ }0 |6 P" f& p/ C: [7 m2 Oset 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 O  n5 c) p" H
set k (k + 1)
8 F7 j0 g( `2 C% H1 Q: C  {3 r]
" B) w# M2 n* Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % C  G( i+ u# y$ m" T+ i
set global-reputation-list (replace-item j global-reputation-list new)
6 {$ j% m  F# I9 H- c6 R. i& h7 H8 nset j (j + 1)
( a. k; M1 o% q9 R]" \1 G( \- `9 R% e
end) ?" A1 s9 I" ]( B
. D6 I9 h/ w; j& N5 U. O7 A/ x0 D

; U9 u4 R7 `$ y) n5 J# `9 ?
* H# V8 x4 H/ x; y0 @9 Ato get-color
& c7 i2 @0 O  \6 N
, r4 `" ^& |" Jset color blue
7 p5 `+ o/ }" ?$ A: |
end
, L% l+ h9 g4 f2 U9 j% u& I) G! D
1 y/ Q5 z( r" mto poll-class( ^; H( Q* Y9 m6 C" w
end
- X# G+ F# d+ R, ^) |( o6 p# ]( h; P! ~& G. W: h- d% c
to setup-plot19 H' b7 j2 h. c. g

$ @) O- w* f, d1 \set-current-plot "Trends-of-Local-reputation"

$ _3 ^. x+ R8 l1 {0 ~& ?
/ u; w( ~) z* _set-plot-x-range 0 xmax

, ?1 ~0 _5 p2 }. o7 [
4 P9 e7 i' W6 H# Iset-plot-y-range 0.0 ymax

. o$ p' u6 r8 h* e) B$ Zend8 g+ L, B' U0 ?- K

3 G8 m; f9 `2 a; T+ b0 l3 eto setup-plot2$ H+ c4 j- y) p( K6 q2 Z

9 k8 C$ t; _; ]5 Pset-current-plot "Trends-of-global-reputation"

6 a9 ]5 ^1 l$ k8 F( B* w
2 |; g' O. T. t* s: [  n3 hset-plot-x-range 0 xmax

& ]! ^, l2 W  Q' Q
$ e& L4 D" n) C; B7 F8 Dset-plot-y-range 0.0 ymax
6 I& ^6 u9 A- B: U2 A- l
end; [, i& G0 X7 e$ e9 Z, N1 ?, D
; E. p4 d) w  w6 u; j
to setup-plot39 U* `3 P8 u5 I4 o4 {' Q1 `
1 |4 w4 J" j7 @& P& J9 i
set-current-plot "Trends-of-credibility"
3 k6 G. x$ [+ `
3 G2 H+ X1 R$ F9 Q. }
set-plot-x-range 0 xmax

; ]8 Z) S$ X! C# N" x; j" M$ ?/ A) Z: S' Q% y% ~
set-plot-y-range 0.0 ymax
+ Y" k0 T- k1 t% i8 f
end; H" g* E, W9 `6 t3 v- n/ w

( i8 f' J: R4 X4 Yto do-plots
$ k1 c* c3 V( nset-current-plot "Trends-of-Local-reputation"5 x1 s+ p+ o% t: b7 {. q5 H( b
set-current-plot-pen "Honest service"/ s, w. ^  U. t+ K: D) Y
end7 k* Q6 F* M, t* U

& E. P5 r  r% |% E. P2 d[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
8 [6 I$ H5 c2 g- t: e* r$ |9 }. S1 s- {
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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