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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:7 q' B0 U7 G+ F. M
to do-business 2 `5 R6 k5 E* H# i4 |* `
rt random 360
( @& W9 y% y$ P$ G1 [ fd 1
' t$ m# x. i! N+ b# n& l ifelse(other turtles-here != nobody)[* |" c4 }9 D- [# V
   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.5 H: b- X" e4 P5 b( D; K* P( f
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 l3 ^& E+ \  c: v* Z- j0 D6 X   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 G# c- w+ c, m   set [trade-record-one-len] of self length [trade-record-one] of self
3 s! D3 B: q) U   set trade-record-current( list (timer) (random money-upper-limit))
5 s; u( }- k$ j# r# X! Q4 f) z0 e1 E) N7 Y3 L
问题的提示如下:
6 v$ G1 u8 T/ c- f. ?; {* |0 x# g# G! z
error while turtle 50 running OF in procedure DO-BUSINESS
' L2 G  F0 I% u0 F7 f( _  called by procedure GO
& w" e' m0 s7 Q: f6 YOF expected input to be a turtle agentset or turtle but got NOBODY instead.8 M0 c4 ^. p; K( p; E6 g
(halted running of go)  Q' A1 C# {: {$ G. i+ {3 c

; y7 @0 l2 o( o+ a' \. D1 p) `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~~
- ~& h. H4 Z* _; ?9 q另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教, o: ]& J$ f' _) \2 o3 B
globals[
; {6 \- k$ H4 F1 {xmax7 d2 H' N+ `3 a1 E1 P7 P" p# I  Q9 [
ymax4 b" R; F% P6 J7 m
global-reputation-list
; t1 P: ~/ U6 @" |8 z' \: \7 Z: ?8 U0 c' Q+ {. G8 S7 D% B6 E8 W
;;
每一个turtle的全局声誉都存在此LIST! s" E5 f& q  w# L' ]
credibility-list
, ^2 K6 V5 ~- }3 `6 K  g# l* a;;
每一个turtle的评价可信度
$ l6 \: ]/ Y1 Uhonest-service
3 Z: b0 s" c9 m0 G! ]unhonest-service
8 I3 z8 V5 b- K& |/ e! T. }oscillation
2 W1 U$ D! o  Erand-dynamic8 [# m& I% f% ?& {. a6 c
]) r. K3 b4 U% P8 L% F
9 e4 c" U! i& N% Z6 K8 i# Z
turtles-own[. q) _1 s' d, S/ S
trade-record-all
9 U7 d! k) u! r4 Z( x5 Z( l;;a list of lists,
trade-record-one组成' h% Q( j1 e( {. o; O8 w
trade-record-one; b, L' b6 a3 p5 e& ?( x9 N9 |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" e0 |1 P& T2 K  r8 L) W

$ O! X  f6 n2 X* |8 A- t9 J;;[
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]]* G" a7 P" a+ t5 e9 ]+ K6 |
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]# y0 Q* s& S7 G& 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
1 q! |# t* i! `; }, r) c, i) bneighbor-total
& L3 n7 e# ?& E3 O;;
记录该turtle的邻居节点的数目6 ^& l7 w: N! w+ l" i% r
trade-time! a! u7 n7 x# x( O  N
;;
当前发生交易的turtle的交易时间8 h4 \/ L$ `1 t* N; f
appraise-give4 ~5 b, Y5 ^, R0 q2 z
;;
当前发生交易时给出的评价
+ o9 ~4 Z- d4 ]* Z* y9 nappraise-receive
% `) _- H: }8 v6 X/ t- f; Y" P;;
当前发生交易时收到的评价
/ h; F3 r' A+ aappraise-time
6 [5 F9 P- ]& L0 y;;
当前发生交易时的评价时间
0 C2 v( v% W1 D* j7 T& Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ o# V/ J1 z) z3 S0 atrade-times-total+ w, A5 P' g' m0 |/ H0 K. C. t' C
;;
与当前turtle的交易总次数8 C7 w5 H7 b: s. ~( j
trade-money-total
2 u! D7 _4 R9 l: d. \5 W;;
与当前turtle的交易总金额# R! J; \3 ?) {2 W
local-reputation
( @2 ?/ U# e9 b: x3 A# Oglobal-reputation
- F  ?* m; d0 ]$ s0 [" ~* z; dcredibility
; ~) U1 c( _) y, Q( M7 U;;
评价可信度,每次交易后都需要更新+ v$ b' q5 V6 s1 z2 E" [
credibility-all  K3 A; g/ J6 c% ]) L# j9 K4 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
( y! E) x9 J4 f5 Q1 f9 J3 L5 g" J; E, J% I
;;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& [+ H$ m; R6 a1 [& H* S, V
credibility-one
0 `+ G! N% k$ t) M7 S  @7 @& m: d;;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 H6 E' r0 b4 h" B' wglobal-proportion9 O6 o  U2 l; p. u4 f+ h
customer" }" w& ~5 Y0 ^, k
customer-no
- E0 p5 W1 I8 r, [  e* [trust-ok
% a2 c. \8 X+ }9 D1 x4 wtrade-record-one-len;;trade-record-one的长度% T6 y" S2 g5 @: R
]+ R& n; s! u9 O1 p6 Q6 F* |

; s% p4 `& Y9 J/ |. ^  d- G  B;;setup procedure
) X* Q# @1 m) \1 q( h6 |1 |
( t* R( O1 ~3 ]' o) D- ~% y$ ato setup5 J9 U# ^5 Y  t- h/ Q8 W/ l
) ~5 Q/ J# Y& O! t0 y( t
ca

. |$ m, ]8 D2 k1 r5 B( M( J( R2 A4 G5 t5 G. _% t) Y
initialize-settings
4 F, O6 H" `1 v0 z
: v! Q$ Z% b& j- h2 I! ~: b+ s
crt people [setup-turtles]

- N9 P; C1 I* V" c0 [/ w9 A% V: [
3 ^( w5 ]7 U  E& D, oreset-timer
6 w6 k* A5 I4 G! u9 U
5 N% u, @- B* I+ U8 w- h3 e* K
poll-class

+ K; F- _$ r$ K  S
' Z+ R: ?' h+ {9 f$ N2 C6 ~setup-plots

3 y/ e6 U% N9 p1 W. J* v- \& k+ m
4 ~: P. ^- V) M7 T, m4 kdo-plots
% t% ^0 o2 F5 \- I& p
end
% b- U5 x2 w4 w0 D3 a6 X1 R% R' R; B' p# ^6 e& D$ c
to initialize-settings
3 u, q$ O& P: K. S5 q6 L4 d8 u3 \' U5 H* n% O& j
set global-reputation-list []
- |2 h7 P- {5 w& C# _
7 d  J( B6 @" D* u9 N
set credibility-list n-values people [0.5]
( z$ L% Q" Q: {1 s) R- _5 Q

/ A# Q* G  P+ I' D8 o) fset honest-service 0

; {, Q1 e; I9 {& c& @8 T& R# u& v/ v/ d
set unhonest-service 0

" S( ^, T2 q; k% q
4 ~2 N7 c) b1 ]set oscillation 0
+ l+ R" j0 A/ l
2 P( o. }0 N- p
set rand-dynamic 0

/ P' |) t9 _8 B  T- O4 K) C$ Cend
* s" c% Q7 |0 L" `, U% j, B& l" N0 y9 A
to setup-turtles
) X$ c- \0 P0 i7 Z/ w# aset shape "person". c7 F! U, A9 B/ g
setxy random-xcor random-ycor
- Z& t6 g% S  W7 W; |, }set trade-record-one []
7 B: j! Y6 X' U) S6 q5 Y
9 w; D1 O% C9 H: r+ j
set trade-record-all n-values people [(list (? + 1) 0 0)] + i4 k# I3 z& a- s4 p+ R
& R' j( ^4 B6 h
set trade-record-current []
) x: \( J) c+ P9 F! p; x+ h' bset credibility-receive []
+ U- j- ^8 W" Wset local-reputation 0.5
* s5 I* G5 Z' F" oset neighbor-total 0. f6 ^; O6 o% q% v+ Q7 ?
set trade-times-total 0& f, `) @9 Z$ ~" G
set trade-money-total 0
! _( H; j% I" \$ |9 Gset customer nobody% M. z; }  R! n: S, W/ P: w$ ~: c
set credibility-all n-values people [creat-credibility]- W4 E+ A3 m6 y! H$ p# D  S1 W
set credibility n-values people [-1]0 h, t; g4 f9 \/ [9 O
get-color
; Z! K) t8 }0 ?, Z/ S

; j1 I; k, H+ s6 t5 D, Mend" x( E+ ]0 e# n) k. Z) [5 {
( p8 }' |5 I  k6 o" [  {8 A
to-report creat-credibility  f- ?" g0 }; q2 R) R6 r
report n-values people [0.5]& e) @, ?. a9 \: n' G  @0 p3 B
end
4 ]# f7 L3 v( O! F3 Q9 G
4 Z3 C% f- G$ V. Wto setup-plots1 R! U% ]* c) y# V# U) f: J/ O$ A

! i; C* B) S) G; H. Pset xmax 30
/ F! k* t+ ~$ B% I* R0 w+ ^5 O- h
! l& D2 j  T" H/ y! K/ V4 k
set ymax 1.0
2 c: @3 D% D; J+ |+ M

/ E7 U) g- d% h9 C$ c  B! n/ Gclear-all-plots
4 T* p: O6 m/ B& Q1 m
5 b; K7 K4 G: Z& I4 `
setup-plot1
" n4 M4 ~" `/ u0 y
( t1 o: g2 T! x! Q, P4 f5 S3 g8 d
setup-plot2

/ k- y/ ^: M* j8 @( f1 x1 j
/ y. _; M- _$ n$ {3 gsetup-plot3
. o+ f5 h' |7 `! c% N- ]5 n$ z/ L
end
! b% F+ x6 @* O) ]8 a4 q4 B; [) {" ^4 g
;;run time procedures
+ I2 N- H" m4 o3 }4 L: n% X2 p6 y$ `' l* b
to go
) w; P( s5 H  Q3 q0 @7 E+ ~; h# w, q5 e5 ]# D! p
ask turtles [do-business]
3 g& {9 B5 W, u4 Y& e6 @2 I1 E* T
end
# o# G* F3 \0 L1 S6 s6 h0 N  [6 Q( f
% D$ D1 N" j  T6 ?- Qto do-business
0 H$ w( Q0 K5 n6 B# p2 F" _% Y
; U$ r( C* \: H& r' L

, x. O8 n* \. s) Rrt random 360

3 |& b( c# v- B5 q8 s8 X) o& d
5 |9 V# J  H9 p$ U' m  f7 vfd 1
) Q3 H9 `6 E$ Z- t
: W) H: X% X4 C  t! |  h% k
ifelse(other turtles-here != nobody)[

0 D$ O1 w: D6 U1 Q. a4 ]8 H! A9 f; p
set customer one-of other turtles-here

* `  ^$ }  D/ j+ G7 @7 O) ?
' F1 `% x0 ^( w  U, f  D( W;; set [customer] of customer myself

/ j5 j- i/ }2 s& I$ c6 A  F. |3 H" S0 j* l; h; g
set [trade-record-one] of self item (([who] of customer) - 1)+ h( p" f) F9 F/ U6 v! `
[trade-record-all]of self
- l5 g, y# N8 w7 ?3 z1 S5 I7 `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& Q! m" r$ [; [) Y1 `: v9 G8 |4 D9 @) _9 L
set [trade-record-one] of customer item (([who] of self) - 1)
' O. E; P  F& _- }[trade-record-all]of customer

' ?7 D) K" ]# e/ ]9 N3 ^- v% O2 i6 H3 B% a! `
set [trade-record-one-len] of self length [trade-record-one] of self
7 x4 v" d  U& o3 Z7 m
% e8 O' P; [8 R: I% P
set trade-record-current( list (timer) (random money-upper-limit))
+ ]. \1 j" p' X  v) y

2 @! ]; I& l6 D( B7 L, e$ O, J7 Lask self [do-trust]3 ?- K( K% g! I0 E* m0 O; I
;;
先求ij的信任度  A' y" }- S" @$ [* F. B1 q0 P

: Z9 L4 [% N# J, y9 U* L  a: x* ^* d7 Eif ([trust-ok] of self)
2 @$ `/ h& ^$ w' w. m+ p" M" T;;
根据ij的信任度来决定是否与j进行交易[
2 Z! F9 m$ k2 task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- w4 b; g, z8 v0 N  Z3 ?$ d$ Z" ]
. l9 u- L7 |! Y8 Y  @3 Z[
- M3 O$ t" s1 e0 T

  ^- g1 e. v1 fdo-trade

- q& ?: c8 _! O: v4 W
! E( P8 ^' e: N: c# |update-credibility-ijl

& X# k9 ]% q1 T* J* a2 E, b  p) I6 n) _! e( y5 i
update-credibility-list
- w* ]5 t8 s1 p8 L! d

! e* ^  p' @$ e" }* j& E5 t. F7 |5 A/ L4 ?% R: H/ F
update-global-reputation-list

# J. p- x% F& p; a! d* ]6 s
/ v* g) p! r' P- Dpoll-class
5 p% [! d- O8 w

) Z, u7 z4 \2 u4 N+ G% ?4 wget-color

0 l; _9 @/ q$ A2 m
# T, n$ E, e; F9 s1 m* w]]
7 }: f8 ]( C8 p/ n+ F, c5 \2 X. o
1 O& d1 ~+ y0 C( f;;
如果所得的信任度满足条件,则进行交易" S8 s1 e3 i2 p. }& }0 B

7 [) h( Q& ^& Y& B9 W/ e5 J[

* m9 M' c  S: ]$ w- r- p% h3 U) t- S+ O& a/ q3 u) m' X8 z6 ^
rt random 360

: V" k$ a, g: P' y6 c
( c5 X2 T1 F: y( Sfd 1
9 V  V  W$ k3 J" v+ |& s

, c4 F8 n4 Y* J" }" o; _( @5 j]

* c: |4 f- a8 T1 d' I+ _0 T- y/ }: `- F5 h
end

6 T7 T" D7 v" Z: Z' r+ P
  p; z! [1 @& {. [5 Oto do-trust
1 z/ |$ b! l! v& t' hset trust-ok False
. `9 \1 u9 F1 c" {9 J6 f
5 Q/ R! B& O; A7 f

: F$ x$ ?/ d; }/ N! G, v: J$ wlet max-trade-times 0
. l( F8 _: m& u+ A: fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. Y, ~* s% X# ~( n/ @+ D) n6 Ulet max-trade-money 0
) ^9 ^$ o7 R4 i7 H+ bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ `; F5 W# A! 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 v* ]+ [6 X% @, r. e8 b& G! X

! N' T- g5 s, }$ K

! P/ K  {) t* ~5 Nget-global-proportion$ ~) v# x  A  G( E  Q
let trust-value$ X. Y# m3 c9 {
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)

9 Z4 k( |8 r2 r4 hif(trust-value > trade-trust-value)4 p, X8 v; i! Y$ y8 F
[set trust-ok true]
/ E, c* Z( c) b7 v/ V" cend* |6 h0 h6 t. q' u6 @& J

) a# q& P5 x! x- y& j  U; _4 bto get-global-proportion
7 `# k! \; ^! Q; {- D7 e7 pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) s) H" n5 H: P- G% ?( @[set global-proportion 0]
8 ~, D  r5 N" M. ~2 y[let i 0
% P, z7 B( A, T, y7 Y9 M! C& slet sum-money 0* h6 f( O. v/ i) J" M7 s3 `$ o+ c! w
while[ i < people]
- [$ u, d9 c& r% a# g[* M0 r& P1 E$ ~4 J& P# F
if( length (item i% p9 K! |1 o' D! W+ [) s. s
[trade-record-all] of customer) > 3 )
9 F8 v) }4 l5 h$ I: ~9 F, V; D
[( m- }* e! _4 a7 {& c- @6 E  d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) o" _. G2 m& m5 z8 Q0 Y]
* ^4 I3 B5 I! b/ }/ ]9 ?]
& b$ t3 \: B0 F" z% Zlet j 0
* b0 i4 s( v7 u0 Dlet note 0
+ I8 k  _! V8 q% M/ G7 B% awhile[ j < people]0 |- `$ b, d8 v% H  E
[
2 k& _- t% Z7 zif( length (item i
8 t* |! T* b1 j: J1 y[trade-record-all] of customer) > 3 )

: P: s- u* i7 ]* o$ E# }[5 y/ x! c& }* ?2 e- ^4 G
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* V8 W) R4 u0 a% h6 ~' g& Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 a' x) _- G; r: ^  z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 M- A7 x8 V! k$ Y
]
' N0 {! T" }; |4 ~]* ]! N# @  M  i9 w4 A0 F" `: x" c4 ]
set global-proportion note3 d9 V6 L5 m8 G
]
) u$ L' F2 V4 {$ G$ o" Lend
# w. E( Z/ k9 a, m: p
/ a" f" K9 t  ]0 R- B9 Vto do-trade
# P; q; ]: V% H/ }% `;;
这个过程实际上是给双方作出评价的过程
/ j; i0 a" L' Z  Z0 o0 Y5 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 R0 Y3 ]) h: \' E! g3 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 Y7 q2 x# S. D- q* }set trade-record-current lput(timer) trade-record-current) G0 c, x* B6 T' t( f7 @
;;
评价时间; ^' Z5 N/ I* N4 Q: N# }2 q. S$ h
ask myself [
( y3 T3 X# f! Lupdate-local-reputation& E! z1 P  i: ?* T6 ?6 s5 E: G7 ~+ Z
set trade-record-current lput([local-reputation] of myself) trade-record-current% I- U$ Q' o9 ^
]4 ?: B5 o6 N" I6 u4 L' M' i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: c9 h1 ~4 @3 ^
;;
将此次交易的记录加入到trade-record-one6 G" A) B8 r3 K  p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# R  s+ L3 Z6 o; D9 Z/ F+ _
let note (item 2 trade-record-current )
' Z% q8 P. O3 t8 L3 ?set trade-record-current
9 m! J* ?% K; x/ s(replace-item 2 trade-record-current (item 3 trade-record-current))

! a8 R  E7 g% y: G4 D5 H: rset trade-record-current3 w' i- f. L2 u) E
(replace-item 3 trade-record-current note)+ D/ k, ]4 _6 s6 m4 B7 z

: z) ~; }5 x/ R

3 @( l/ _: l4 V+ w) B4 y; C. E& ?ask customer [3 |$ u( F: C0 `/ E7 H( v0 D
update-local-reputation
% Y. B/ _4 l1 Xset trade-record-current
$ }5 B1 _6 ^! e6 X2 X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* i2 [6 X  t8 n3 i
]9 T7 p" W) X! r! h  W+ j
% C7 c6 b# e# u* x
5 Q9 n0 J8 x; ]4 l$ V( g/ m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ A  g  B7 ~  r- R" i

* t: n' E  J0 o& Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# R+ B; ]8 T2 @$ `- s;;
将此次交易的记录加入到customertrade-record-all
. v( H( [' r. B/ d6 q- m$ aend
; [7 t0 D3 \7 e6 }% [8 q  B0 `: }; Y3 U; R4 L1 o+ Z) ~
to update-local-reputation/ A- d- c. y9 O
set [trade-record-one-len] of myself length [trade-record-one] of myself
# A  j4 m4 h# Q* L: v
4 S6 c" f. l2 R: q+ @! `
( d6 X) r6 ]- f2 I7 @;;if [trade-record-one-len] of myself > 3

5 W2 c/ c" |0 [% Tupdate-neighbor-total
+ y  l! O) ]* c4 U- I;;
更新邻居节点的数目,在此进行8 e# C0 T2 z  b
let i 3, h$ `, ?% J. V' e- m
let sum-time 0
5 y; y0 k- E/ {  d% Pwhile[i < [trade-record-one-len] of myself]
* @; N, n' C  q* N% C9 W5 y6 \[
; s  U" }0 i! N6 mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ o% }) B$ v. {1 T6 G" C; n& v
set i' v4 f- ^9 o9 w: M
( i + 1)
7 d- m9 I# h5 M: V/ @7 {
]- d: K0 V7 W/ ?$ W5 T) S- i
let j 3
3 W1 Z  e: J) |& }. Nlet sum-money 00 ?% w- Z2 x, z5 i+ X5 ~9 O, Y
while[j < [trade-record-one-len] of myself]
; \$ _) K; N( v9 a) B! p[
+ Z5 b" W# S, ?; z7 `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)
& L7 J% D. g: |0 T, P8 d. Yset j
( q% h, S- |& o$ A) N( R  \( j + 1)

6 U. @/ c/ w5 d]
. X% A. u' I/ w: ^: \) xlet k 33 B& X% S4 ?; m! l$ X
let power 0
9 E, d8 p4 n1 N- vlet local 03 [+ r) v6 }. {& A2 O* b" d
while [k <[trade-record-one-len] of myself]' U0 M$ u& g6 e9 q
[5 s- ?9 H' s: `2 l
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) # c6 D7 V& p8 L3 J
set k (k + 1)
* C  i+ a/ Y3 p1 v' n- t  Z]/ d. i' t9 r. }* ]# `
set [local-reputation] of myself (local), d) ~9 W! k4 q
end
9 y3 R+ j; R- w. F" g  b  Y# p, N4 V1 m* v5 z% a
to update-neighbor-total8 Z$ q! K1 Q6 K% r8 g, h) ]

* B% c$ A$ \0 A- j  O& X& Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 G9 y. C1 ^, I8 x0 Z, m9 \, I. }2 q3 {, a2 l

6 Y4 k2 z2 X5 k/ `end
9 F) f* V, ]( Y4 F8 \6 {
6 n0 O) `3 g8 i# ^to update-credibility-ijl 0 ]0 ^  a$ ~/ J( ?$ G1 w1 Y% I

& @+ l: q+ J9 J5 _: E;;
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。
' g8 ]0 f, `0 e4 J' [let l 0% b" P. w# T8 G& ]; H  i6 F1 ^
while[ l < people ]
, B; {/ e3 C" S! z$ t;;
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
" \8 x1 v/ J; v% W/ u: j! M[$ e' n% j. f) G: D" w9 w& m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. E1 D  c- u. w* ]8 K) G; vif (trade-record-one-j-l-len > 3)
/ B# s4 Z+ t3 U, d! S& r. j[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  H/ M: N! s; W7 M" |) t" t
let i 3
3 y; X3 n# R/ {( D; N. slet sum-time 0# K3 k( v; _% m! s2 m5 X
while[i < trade-record-one-len]
8 [3 E/ b8 S  J8 H6 O( P+ F[
% i. t1 A; [% {3 H4 pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 c6 V7 Y* c  x2 R; ~# s. Q: a
set i3 n6 ^7 _( ?4 @4 R0 ?
( i + 1)

7 A( r+ W  ?4 r: s7 y0 d' D]
; r( V! x  a% t! G1 _! Blet credibility-i-j-l 0
6 Q4 @& g$ @/ t; K. h0 k& c;;i
评价(jjl的评价)6 p2 L. B4 J! A6 ^/ ?
let j 3% L) U0 R/ w# h$ y1 x& l- u" [3 K
let k 4
: F* w$ k7 g( V0 z8 q2 Lwhile[j < trade-record-one-len]/ s& J3 P& q, g! i: Y
[
4 w. \$ ^* A' b6 W% [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: z' i) s$ v5 \3 Y, Q1 B
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); k4 h' @, M$ G( \/ t& ^: ]
set j
4 J$ \2 {0 _, Y) Z2 ?( j + 1)
8 H, u* r0 t, r* n) N. H/ z
]
% v) a+ y( ~+ Y0 Wset [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 ))
+ J$ b8 Q, q+ w# Y) X% R/ F: g9 N8 R* }. [+ n: m

5 h- a6 x. X* X; Y& j, X4 Z$ _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  o- q8 L1 o0 W;;
及时更新il的评价质量的评价6 g3 p! \' k0 b0 c6 l1 `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% |6 L; z  p& F6 j+ tset l (l + 1)
$ s: n5 N- a; I8 M], H. f6 |( c+ |: h
end7 n0 k+ u( o4 C$ S! Z, H
0 T, m4 i! @6 h0 Q! C# ~
to update-credibility-list/ j- X  r; C' b
let i 0! |; P  p& X. v" ~
while[i < people]! ?$ j. G" J4 x- `% {! o0 L; T( I: G
[. H- ]% _4 x& D) y- K( k. s
let j 0
. D: z1 w! \* v( j6 d: dlet note 0
+ G+ S- [( O! d0 P6 k3 qlet k 0& T+ c3 S! P/ L( D  W
;;
计作出过评价的邻居节点的数目
5 G3 B  [1 _4 w& Jwhile[j < people]2 l: D- b% @1 J" e5 Y: L
[
5 w+ D3 w8 k4 d  K, Z2 tif (item j( [credibility] of turtle (i + 1)) != -1)
0 r9 K* y2 {0 F# [7 @;;
判断是否给本turtle的评价质量做出过评价的节点
5 `) \; r# Z3 F3 i2 P# ?! [[set note (note + item j ([credibility]of turtle (i + 1)))$ T" ]$ c9 ]- U* ?, r* X/ D2 J
;;*(exp (-(people - 2)))/(people - 2))]
6 H) }- w: Y/ K  C$ T* Q
set k (k + 1), U% F( C: Z4 M* [
]+ T6 r/ G  ]' F) @. z/ i! B# `
set j (j + 1)
5 C6 E5 \- G4 g: o0 O: n$ v]
0 P: I0 W3 L5 i. y# U' |set note (note *(exp (- (1 / k)))/ k): Y1 l0 r* ^" @4 X7 h5 {
set credibility-list (replace-item i credibility-list note)5 Y1 W  N1 P/ H% Q) c: Z- d
set i (i + 1)
. I7 n5 j( w" p]
! j# `% D5 o, wend
7 P) j8 K" n9 V' {
6 u7 e4 Y* n- Jto update-global-reputation-list
0 ~1 e' o1 h, q7 G4 l/ ~- k- ?3 tlet j 0
5 J  r# o" {8 ]3 C: Pwhile[j < people]4 I( x5 i, t) P! h
[
4 A' i! ^+ ]% z8 Vlet new 0. U9 D6 n6 O6 y
;;
暂存新的一个全局声誉  |% y/ m5 _* e5 ]5 M- ~
let i 0
" M4 k7 ^0 B) J' E  m: c) alet sum-money 0
1 s5 O1 `* d0 H2 g2 {9 g$ llet credibility-money 0! _0 l& w% G0 W/ @& j
while [i < people]8 k! s) j3 H$ Y, Y* z9 S0 u
[- z" @" R# d1 q3 l! V7 I
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 W$ c* ?3 W, G# I7 g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 q. G* n5 ?2 m( B
set i (i + 1)7 r7 s# r& n8 s( y  d5 k9 b! n
]. R8 k8 B- s* j) y$ T, H0 ~
let k 0
% h, A7 \# @8 X& a1 k% m! \+ mlet new1 0
9 i4 S+ a3 L: U, ?# I3 T* @( |while [k < people]! f* p, t) R8 z
[
% m& g5 J( p9 \5 P+ V1 }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)* P  H. c% l: E, P6 M! m
set k (k + 1)# p1 Y2 _4 k6 J6 I
]9 ?" e' d/ O1 }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ P6 }  J* x' t9 v: X5 v5 c9 Cset global-reputation-list (replace-item j global-reputation-list new)
7 P% e3 t8 i8 d9 W9 Lset j (j + 1)5 b4 `& f& ?: x5 I8 ]& G- ^
]: S3 b# N7 @2 ^+ O( F
end
8 R/ @! f; ~6 R# Y& y- B) T% q6 H( e9 q9 a1 s
. y' U4 x) F5 J3 m; ]0 q2 `+ |2 w
  C6 @; G8 u& M1 F2 j/ M
to get-color8 W$ O3 |6 s& X4 }

% i) e7 k. S9 z# \% B3 w; z7 V! Pset color blue
6 l6 X3 U: Q0 b. M+ R
end5 h$ c0 c" a' W
  y6 b+ {, @0 g1 R3 B& I, k
to poll-class$ R* A" W5 l$ x# ~/ K2 }
end. `& \% o0 X; H+ E. N# l9 B9 e0 H3 N' z
! {: H& {! Q( T7 K* L. }
to setup-plot1
! U; {, B, L. L  y" l7 {6 X9 t
- r, b$ E/ j, I( Bset-current-plot "Trends-of-Local-reputation"
, V. ]( M) X1 H7 c& c
8 z  P7 ~* \, e- g' K; F$ [
set-plot-x-range 0 xmax
: J  o3 E4 V+ Q+ d1 y' L

5 |0 X; N& _* i4 {" O  Mset-plot-y-range 0.0 ymax
8 g7 n( K( n4 E! v  a" }5 d
end* I  Y8 y; {! U! X" I+ o! G
( Q$ a* m& x- |9 R! J
to setup-plot2
6 f( g7 B# E% \. k+ C6 Y
$ G) T0 p% O6 b9 Kset-current-plot "Trends-of-global-reputation"
- F# Z, d- S) ?9 O# `
3 C& l) b$ L& D9 {% |6 V
set-plot-x-range 0 xmax

. R; s0 v* i. C) @! G) z. k8 ?
3 ?! T) T8 a3 ?% T( Cset-plot-y-range 0.0 ymax

$ m; B, _, Z& A! [- K/ f$ ~- H6 B; v; dend8 v, c8 v- d# X. N  I3 j
% l2 |2 S5 O; z* C. f( n. G
to setup-plot39 e- p- h' {) o6 F

4 s" P- i+ j; _& cset-current-plot "Trends-of-credibility"
- b& X; u5 R  ?0 i1 d4 a5 D3 E

. f3 g4 u1 a: p; C7 X% E) Fset-plot-x-range 0 xmax
  }' B8 ?1 Z  O

$ X& {! v7 m9 ~5 Oset-plot-y-range 0.0 ymax

6 t+ |8 y- N" o' Cend
( p! A9 e9 e9 {1 Z8 |/ p
* ?1 u0 X2 S( N& X* rto do-plots0 b' G. j# E4 n) H* Y; G6 e
set-current-plot "Trends-of-Local-reputation"
* u" `+ A2 t  j, T5 I- `* l1 M; eset-current-plot-pen "Honest service"
. P  z1 w: O  V( N; R5 Pend
! c% u! ?9 H# P" ]$ R% m2 O) }8 ]+ r# ], {7 N( K/ N
[ 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.( F0 _, n7 S. L3 i9 n
  m# W3 Q) h' _, u5 V
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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