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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:
9 {4 J( c, A3 z8 Pto do-business " Y3 v7 h8 c0 ~8 u
rt random 3603 E7 F: }2 I# N  T; p! F7 ?6 e
fd 1
) j3 K) T( i0 p; r) X% b ifelse(other turtles-here != nobody)[5 s1 e7 \: I: {' Y+ ]9 L
   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.+ O. e# [" p* [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 i8 B& e" s# K' d+ v, r3 Y- R   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 N  L+ o, r9 s& t" `4 v   set [trade-record-one-len] of self length [trade-record-one] of self! Z3 |0 t- e$ y8 c7 I
   set trade-record-current( list (timer) (random money-upper-limit))2 @* Z) f6 @* M7 R0 O
+ \7 p/ U; e0 c  N( |
问题的提示如下:6 ]( \$ s3 ?) `0 d
" ^, r, q) Q0 h1 ^5 l) R
error while turtle 50 running OF in procedure DO-BUSINESS
/ k1 p; r0 P) n/ R7 a. F  called by procedure GO. |% _) n' S  k/ T( i, R
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 K5 }& J3 q' s& K+ y
(halted running of go)1 o- C- ]' @. W& @4 Y

/ T- `6 E$ O3 L# u. m) N9 N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~~- u. o( s# K6 ?5 S8 V; }
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
2 t2 z( k7 l' V' ?) @globals[: L8 A) R- |/ H9 l7 o6 j! k3 o
xmax
! r! V  J: T' y4 }+ P" W) aymax) x7 S1 S, B. \5 u( K
global-reputation-list
: p" w5 N7 V  Y7 I" i/ o$ v5 H* B: Q; c( d0 \/ u) Y( `! S
;;
每一个turtle的全局声誉都存在此LIST& }) A6 `: |. |( D' I6 j8 i
credibility-list$ E/ W0 {9 c- n+ ?5 f1 n* N% N. |. y% Y
;;
每一个turtle的评价可信度" o# u+ A% @) l. c5 I- K: M$ Q
honest-service
4 k8 U; Y8 D  Y/ [# E" Gunhonest-service. K& t$ i4 F2 Q  e: }% _
oscillation( g1 r) k) j5 V
rand-dynamic  E' ^( z1 ^$ }% C
]* }; `  G6 T& x% x7 Z
. h* y  w. X) ~- e4 Z+ X
turtles-own[: l: l, K4 r) A
trade-record-all
# e2 F( U: s  @; m% N6 J;;a list of lists,
trade-record-one组成% Z0 W4 |/ n5 Y) [  k
trade-record-one
( m0 M+ s8 L" u4 e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; T) o; z0 s/ ^# ]; `
+ x0 C) r: N, J7 T1 ]& K$ f  P
;;[
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]]6 H6 G, s) Q8 Y( N4 S, k
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]3 A8 f' O  D0 ]
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" }/ b. ]$ J1 P' ]' B! X0 M
neighbor-total
- J" f+ w7 b4 `! |;;
记录该turtle的邻居节点的数目: ]3 d3 {/ n% Y4 }. w
trade-time2 q# D( b% Q2 J$ o' s
;;
当前发生交易的turtle的交易时间
0 G: _/ ~2 Z9 y! \( X1 p- u5 mappraise-give
5 r8 H' ~/ {  f! H, @% w$ B$ K: L;;
当前发生交易时给出的评价
, r- Q$ U& f, j' Qappraise-receive
$ `. `9 `& U' o7 k. i;;
当前发生交易时收到的评价( Z/ _6 ?% {( L' M$ q1 R. Z9 c# q/ J
appraise-time
- v1 y! d, S4 a; ]- ?& v;;
当前发生交易时的评价时间+ L) d* L1 R( x$ z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' O7 d' s, X. ]1 S5 b
trade-times-total
/ s5 S9 G+ ~/ C  v* z;;
与当前turtle的交易总次数* k5 `# }/ p- H
trade-money-total1 f, _7 j7 O3 t; X" t
;;
与当前turtle的交易总金额
5 G/ v& V9 ^5 c2 B$ L. L! hlocal-reputation
7 @& T- C. }! k9 E1 r! P4 Dglobal-reputation
1 i$ g3 v; J& A" k1 o* y. p- \credibility
9 Y* I3 L5 j, b6 X2 g! D;;
评价可信度,每次交易后都需要更新' j0 U, c, ^! M
credibility-all
0 V" p2 V5 l/ N;;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
- S- t* ?1 ~( U
: Y4 t+ v8 \8 h- u;;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
; O9 T( p7 w* t# z+ _. Ncredibility-one
+ p$ R, R) z' J! {; r# 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people2 p3 ?7 q& H; |& l
global-proportion8 e. O3 M! q: k8 d& ]+ f8 X  ^
customer0 q4 T& s5 M/ Y, a) t
customer-no% z2 Z4 h+ b* |! J3 I6 j
trust-ok
& V- G0 Q4 K5 v4 [3 V- c" Qtrade-record-one-len;;trade-record-one的长度9 o& g( m  R' m
]# w, r" O0 z0 N7 Q4 c
2 b* u; H" [. @1 M8 {( e$ C2 ]" s
;;setup procedure
! H$ \3 b/ O! H. L/ G) x% a' e3 x- z  i. M' e
to setup! a4 x. ~0 j8 n9 V* W) Q
( P) m) w! o& @% J$ e7 y' V! i# b
ca

. G5 F3 \. I$ ?' M0 [7 B4 _
# d4 A) ~2 r) A* ?; Einitialize-settings
4 h# p0 G6 @$ P' `3 P

! ^" E5 B* J. r0 z* Y4 \* Ccrt people [setup-turtles]
  P' E2 I- p+ M3 c+ o" i
1 c8 [% n1 {; o) O3 {
reset-timer

7 P( S" ^( F- x5 G2 W. }- z) B$ H+ h2 o
poll-class

2 Z. l  I2 [5 X3 m6 Z% N
7 i& e  I- B' y$ e. C& H$ @- Nsetup-plots

- E; b$ }; ?6 h. X1 |( h; H9 Z7 V, H: ~4 i; S
do-plots

# E/ i& ?0 a* F, g" Bend
9 D8 ~- A. U3 X; \( m5 |
; N% w  S) ?) ^/ N+ Uto initialize-settings
& \5 s# \$ _5 i( N$ A4 Y9 E* ~" z
set global-reputation-list []

2 @' I& u6 X5 Q' j( ]
4 y' R. u  X, `1 l; f0 I# o+ Kset credibility-list n-values people [0.5]

' c/ ~! k2 S: v5 q, `; e* X% q6 G4 o! y% s7 k
set honest-service 0
9 U% h, E3 S5 `' Z

. H7 @, |  ~" _% t& H; c, {set unhonest-service 0

- \. d  f6 _$ m7 M) M% C# |; @* m. q, i; }2 L  G6 A
set oscillation 0

& a) s! v  b: C- v% v, i7 a
! h+ `1 z. k$ s* o/ @# U3 d3 Bset rand-dynamic 0
% B- d" z3 t  W' t% x
end/ x& r6 g9 ]" S. @/ M
7 \6 G' B# t' ~7 |* E2 M" r
to setup-turtles 8 y" @! k# e" K1 D) n3 G6 Q* D
set shape "person"
' a: X( X4 g" F6 hsetxy random-xcor random-ycor2 @2 h, F8 `6 _: P0 d; r) p& ^
set trade-record-one []
- g1 ^1 _, |8 l  K7 l* D2 P( I

0 n+ C7 y* E5 x( Sset trade-record-all n-values people [(list (? + 1) 0 0)]
3 q8 R2 Q1 F# _& a5 F
6 c: u+ ?  v. y
set trade-record-current []
, Y' c7 N* q8 O/ t7 M# {0 s6 ]set credibility-receive []
( B" g( b6 M+ q% {, Pset local-reputation 0.56 v- q& I1 }! k: ^0 Y6 V
set neighbor-total 0
9 T: t5 g! a2 b! B1 _" Xset trade-times-total 0! Z' E5 a+ W3 M' N4 D
set trade-money-total 0& R+ E: g* `, a4 _# V1 e$ \
set customer nobody& V$ k( y* J& X0 p9 h+ c) V
set credibility-all n-values people [creat-credibility]* h, n1 {' V$ E+ A
set credibility n-values people [-1]
3 _8 A3 h% u: z. yget-color
! t) g* `# o) @0 R4 K6 w9 u
6 h( |& ?8 ?# P& U# w5 W! j; @
end9 k+ [# l8 V" K, R5 y+ b$ z
# {9 m! U9 s7 Q% c
to-report creat-credibility9 H) P8 q$ k6 k2 o) G4 p) j5 n7 G
report n-values people [0.5]
% Y' ], d7 Y4 y/ R* @) k4 D* pend& q7 t3 b6 y' W# K0 V4 ?7 w2 }$ N
+ O% m8 h7 t9 W% K( u9 A/ c2 K
to setup-plots# n' r  s9 Y; V. e6 Z

! S6 ~2 {+ X: E4 v1 ?8 V6 d: J) Mset xmax 30

' P, h5 ^4 u4 S1 h  k; P2 I
0 I+ m8 u" m% s. X( X2 \8 eset ymax 1.0

, @/ q* X$ h2 h% F( S  B8 B; }$ n0 d- `
clear-all-plots
: X( H1 G: @- s
$ Q& B1 j7 g4 u: Y# V$ y  j
setup-plot1

  @( A: z  {& j6 T5 _, f# p- D0 K/ }5 L) \( d! h
setup-plot2
1 G. \. x0 n# I/ V9 Q8 o1 C

& e, g* N; W5 f! Isetup-plot3
# x* U% y3 \$ m; M
end9 e7 E3 _' d0 l2 W1 c8 y

+ E- N6 N5 L' v$ L0 @;;run time procedures
: L2 s4 {$ e8 ?4 K3 p) |; w, j$ J0 L6 H# Y
to go9 m7 T8 v4 y  k9 p- Z% O
2 N4 o: F! |* x
ask turtles [do-business]

: P$ c4 l# U5 Kend8 x; P( i$ }0 X$ U9 d

) d' o& B# z" I* p0 Fto do-business + l- d8 |# Y- I( I
5 X) A, U/ {  Y6 |4 G

' G: F0 [0 P4 X! ~rt random 360

  l% ^; r- t; u1 ]* J
# w$ F1 W) J3 i0 ^8 M, \3 ffd 1
- I& ^5 R/ X5 ]4 X% G- v
5 {8 K) a  N' d( x7 c
ifelse(other turtles-here != nobody)[

( X# A" M, N: O, r
6 D" b1 d9 Y/ r7 h5 Jset customer one-of other turtles-here
) n/ v" {. l' r
9 H$ i% N+ Z( X8 A# G
;; set [customer] of customer myself

1 g& x4 t% B" U1 _* \% ^- X) B+ g- C9 c1 |7 E3 O
set [trade-record-one] of self item (([who] of customer) - 1)
, j2 t9 r; k. v0 ]' I( V% R; c[trade-record-all]of self' M; S6 L) V6 F# Z5 Z- S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* f1 J$ N3 Y3 R- G5 c8 S6 I- N

  \) A" b5 c! Y. L. a/ Z6 Z. }set [trade-record-one] of customer item (([who] of self) - 1)1 `8 f' B; ?) J' ]; w
[trade-record-all]of customer
% Z* V" Z9 n! G5 F

4 S; Y: k: q1 W: Dset [trade-record-one-len] of self length [trade-record-one] of self
" h8 t3 j) |$ z; p( B; c6 l. n  ?
" @( g3 e9 A9 |" _+ t( o
set trade-record-current( list (timer) (random money-upper-limit))

* O( q. z6 d8 Q2 ^9 V  e" Z
- a5 B3 U% f6 I$ Q: f2 dask self [do-trust]4 D# u: c3 o1 F8 ~& Z2 y
;;
先求ij的信任度
$ h# N, ]8 n  T9 m' G5 U! b7 a# _/ R  \- H
if ([trust-ok] of self)7 V8 L" j. j4 {8 ]% E
;;
根据ij的信任度来决定是否与j进行交易[2 H' G" A1 J& n3 x, o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ u) P; p7 O# b3 g2 |3 ^& o

" _& _- U/ w* E$ I/ j[
' j3 `* D  m9 g$ l& Z7 r
! y2 E1 Z0 i' h% x# |/ h( H
do-trade
6 n/ N& E0 ^/ w. k
5 [% m8 H4 C+ B; J8 M
update-credibility-ijl
' n0 W9 ^  H, w0 a

' k* `* S8 [* |+ rupdate-credibility-list
& g  P6 ^) r5 {
& z. r( ]! D1 `+ B$ k3 [3 L

. Q3 s% I9 D1 ^$ ~update-global-reputation-list
! G! ]$ R" m7 c- w2 @7 i6 x
( `  N0 K7 t9 w% m
poll-class
: ~- ~/ t: w6 e; C  r( c9 {9 m5 }

$ L. e/ e, q9 Y- I2 K, rget-color

( f: i4 [  h5 u4 u
) y3 e( b4 P6 m- |; e9 K0 h: u]]* v: n( D2 W3 ^' k! D  M0 m% e
/ B3 t9 z+ |3 W! w7 _: d5 B- o
;;
如果所得的信任度满足条件,则进行交易& g% i+ Q; U9 |% ?6 n
; S0 |2 C$ R8 f7 F9 ]: ]2 q
[
6 S/ W" U8 k. u# F! w- m
1 S- A# Y( b6 a5 t! W! t
rt random 360

9 X# [: Y1 O& N
1 i0 a1 l- s/ U, Mfd 1

4 F& Y. X( P3 }% h* p$ i9 R4 M. O$ y% L# t' D9 o  D3 g3 a: j
]

* P5 d9 Q* I; u& p8 V* I2 d
! k6 B9 o, S0 F8 f; y9 Cend
* X) O. }  }7 H" z8 }* a( }

/ e4 z5 E0 q, P4 M: Bto do-trust ' j7 Q" A$ h& w
set trust-ok False2 X% v. x8 y9 B! u* V
! I: P" N' e6 v8 c0 |
  t7 j5 M. U7 w& n. G, m1 o
let max-trade-times 0
3 h! I7 ^  C9 h2 ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: Q- C8 l1 ~# b9 l% {; v$ Qlet max-trade-money 0
* T, w, h* a- R1 w! xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 A( g  o3 B+ x* w' g' v0 Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 v6 o0 J9 h: y5 m6 `( [- U
& X- d) Q* e8 [# i. A0 o
) X5 ?& |7 u- c% _# h6 z
get-global-proportion
  y9 _% T' @6 Vlet trust-value$ R% o1 E: C3 l
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)

  H4 b: s: X" c% M$ m% Xif(trust-value > trade-trust-value)
! x3 D9 b) E- N[set trust-ok true]% G' L' T0 g* t" r3 G; @
end0 P- h+ P+ T1 s, y* j9 g
# u3 C1 q# s* |6 w
to get-global-proportion% P3 k8 C* E0 a5 C& P7 p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 M# f6 s0 n( _3 c[set global-proportion 0]
5 @. y/ X3 C) e[let i 0) N4 i$ O: y  J+ U2 R% G
let sum-money 0
9 a- i$ A2 q4 P1 Y8 t. d. rwhile[ i < people]
% ]& P" ]) A9 q: M[" y( Y9 T) n% J% P- D  S
if( length (item i7 h+ a/ ?1 l0 I( ?9 V7 X: g' ]
[trade-record-all] of customer) > 3 )
, d% q! T; U) V+ b& x
[  t8 O: n3 c% r/ d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ P: O' ^# c7 T$ G! P8 G
]
# `9 j6 V) p5 j. r, ^]  \# v  Y; U) e
let j 0/ t( O1 O2 b& L- H
let note 09 |2 N( i' T' k$ D* S" Z
while[ j < people]& c# I5 y, @# m! Q  J+ n# S; ~. g
[) N* }9 Y6 G! }9 y3 b7 B8 |
if( length (item i) k/ d) x7 S2 x0 y' o3 w9 m0 Y
[trade-record-all] of customer) > 3 )

& G2 ^' g6 M' a! x' E$ i# W1 z[7 n" z/ C' T) w9 q. j- j" O
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), q8 {6 s8 J+ h* o8 G$ P- V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 O, w: q* T( x; d1 P[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, e' S) G  o/ }( ~/ G3 {]
1 @5 y& f7 j4 A: f# a]
$ S7 O" o+ x! T# p) qset global-proportion note* l2 s) m4 U0 t/ }
]% X! G) |; h* ]3 ~. u/ b
end9 p  M1 t/ E# w* B8 l, {

( r% u$ }; `- B/ Pto do-trade
- U) e) n5 f9 _8 ?! E;;
这个过程实际上是给双方作出评价的过程
: F; B* E& o, ^, zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 C2 B3 s4 ?) x8 _0 ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" m* U1 z* P) V/ u# U: m
set trade-record-current lput(timer) trade-record-current6 \- q) e* Y0 o& Y
;;
评价时间8 B4 A# F& v/ @$ R) R1 l1 K
ask myself [1 ]) u2 a; s3 r! y
update-local-reputation, M( c' D5 c# j0 J# w. }% \
set trade-record-current lput([local-reputation] of myself) trade-record-current2 s( x! J7 |: A* C, f+ F
]# `% ^; Q1 j* r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ ^2 `0 c6 m8 D( V8 u9 D
;;
将此次交易的记录加入到trade-record-one' f# k) S2 z; Q* C/ S, T( Z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' }9 k* c) s; N! llet note (item 2 trade-record-current )
  H9 U4 m3 O$ [( ^. yset trade-record-current
. ?) r# v7 }$ h0 `6 z( a& T(replace-item 2 trade-record-current (item 3 trade-record-current))

) y9 w) y* L( uset trade-record-current
* h5 D& M' s4 K0 J' u% h( i(replace-item 3 trade-record-current note)
/ b/ W3 d9 x5 B; S1 E
( j( e, Q% D% @+ A+ t# [
# ]* B1 j8 _) P, h2 E) R$ D7 h& F
ask customer [
8 ~% U3 M( _/ Supdate-local-reputation
* g) S% E4 ^) W; u! _: S! |& N) aset trade-record-current( }4 ^1 Q6 x/ r6 B5 `9 \/ s
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, N! d! N+ H1 K! ^- X]
* W; \! R) q& e1 v3 g5 ^5 a0 M9 o6 R! w# _2 n5 Q4 G

8 M/ M9 L7 \. P4 M' ^' h, u0 vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, F' i. h/ w7 N6 S

; T1 p7 j6 ?6 kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( X# G; Z' g- Y. b# x
;;
将此次交易的记录加入到customertrade-record-all0 `" L# `. ?( U1 ]$ ^7 R+ {
end6 o9 x# E* E  L7 ^  H

/ B% V* V+ s! _; t. @to update-local-reputation
4 L% C( U% i2 N4 Y, iset [trade-record-one-len] of myself length [trade-record-one] of myself% S1 N$ x* w( @7 k3 E. s
1 R6 @  A( M9 }" t6 [" d
. i2 X  k9 ?. p9 P
;;if [trade-record-one-len] of myself > 3

! E4 d  y  S% |6 z" Gupdate-neighbor-total
# P% D0 q' J; k( S7 [;;
更新邻居节点的数目,在此进行
+ e; c4 h& q+ C0 T5 I: flet i 3
# J8 {! B2 e9 a9 t/ ?( D& n4 |let sum-time 0( |* g; V  N* H3 m. |0 q/ B3 Y
while[i < [trade-record-one-len] of myself]7 j) ~% r& Y. n/ j
[
" C6 i/ j" v' I9 H% a+ w. rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 `9 z* n' X! ?' C8 U
set i
2 y9 J+ q' e0 T5 f; k3 K( i + 1)

7 H- {* g8 V. _; C+ u' q; ~  C]
: {# l& E! Z5 g, `6 O) Ilet j 3
& r% `: B0 v% v/ D9 O  llet sum-money 0
( o2 c0 ?' R% {while[j < [trade-record-one-len] of myself]
# E) m( q: v7 |- n+ k6 A& }) @# x[) S# `$ u& ]6 L: M9 l0 G
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)  p% T7 g. w0 `6 g
set j0 l: D, P7 T; u) W0 S6 W
( j + 1)

$ C& ]! z* ~4 w]
5 z7 [% ]! q7 B5 H9 ]let k 3
( M6 x3 n3 |9 w( M: w2 Qlet power 01 F$ a% m* U5 G( L5 v) [
let local 0
* B0 Z" ^# b( {4 awhile [k <[trade-record-one-len] of myself]8 I; f- s4 i( l: n: n2 l& M1 D: D
[
! c6 A' u3 l# p  v3 @: oset 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)
6 Y0 p  `/ Z& T$ A& P; _- j0 C9 eset k (k + 1)/ w! G3 y9 S7 P4 e# Z% F" B5 E
]: U3 M5 r3 C4 A& j6 w
set [local-reputation] of myself (local)& A2 u8 m" }0 c& \6 t4 u
end
8 N% o- }' I( `) n) z- q7 m$ R  ~: }* W# y$ L
to update-neighbor-total
- @, P# ?- x( D9 `. @: h; N
8 E! E. U' Q) V( F+ n' pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; I  Y+ a7 R) h9 y' ]" H/ H# d
  r6 I; Z# E' B) y8 q

$ I, }* P  T  @, dend
7 }3 m0 i4 ^% d+ l% s" K! O/ }  Z
) j4 ]+ f. e5 m3 Z0 Qto update-credibility-ijl ( F. T' O  k3 ~/ E: S" Q
, f" r5 ^; Z/ [
;;
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。' O4 w; ?1 p) R+ x
let l 0% C; \" v; K: F# e8 D8 N$ q2 z
while[ l < people ]
8 o: a& P6 C; P: B9 G1 h, ]$ 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: K+ ]& r5 ]0 T9 L8 ^4 u) {
[8 U6 w+ \- M+ f" Z2 C' y" @
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 S7 I9 G  }- Z. Z+ M. l4 `4 f5 ^if (trade-record-one-j-l-len > 3)5 a5 @. o5 a, W* ?  X6 h! W
[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) x& N, e# Z2 N9 @
let i 3
2 E2 e3 G; s1 H/ V4 F% l- B7 @let sum-time 05 q( M+ s; |$ D3 ~2 m/ S" }
while[i < trade-record-one-len]
# @$ a7 `* {& z+ Y2 R[
: d& c* c: t7 a7 b7 x0 T# q5 _. }2 Aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% ~8 c$ s; Z6 w3 `' x$ l; ~/ eset i' r7 a: ?4 E% B' m# Z
( i + 1)

2 ^& a2 A. B* p0 w0 _3 F5 H& n]
$ L( g) d7 G) D* alet credibility-i-j-l 0* e" R; u0 n% D* N1 b4 a( K
;;i
评价(jjl的评价)
9 G* c1 Y9 @6 }( nlet j 3
  u5 G( ]  z* N5 s! Hlet k 4
" v+ G$ X$ E5 y- X$ ~4 f  wwhile[j < trade-record-one-len]( x! e4 w4 I' z& ]- D
[: X6 U/ H# m0 H+ 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
/ A1 U  z  b" `" N6 e. f9 E6 Bset 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)! o0 H3 T% p9 s% c
set j$ N0 h- B' E7 b  p
( j + 1)

; ~1 ]/ H) m- W) N2 `$ A# ~]( G5 S* T0 s2 s! f& Z7 |
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 ))
6 }; |: Y0 M; x$ @1 X
" f8 e! W+ B0 b. a
5 p9 R) W5 e' J8 P. S: |* |6 n
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! I, w4 @3 i" w2 W0 ^
;;
及时更新il的评价质量的评价  F% n6 `8 F2 e" h/ \  \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. Z3 }6 U4 s  _$ o# w$ s& Nset l (l + 1)
9 V# P  S  j% x+ I# m]
, u. C8 m1 V3 X" Qend
  C% c" m! L: X$ F4 w. C
1 a8 N- K; z( `to update-credibility-list, a7 Z: o( P+ n0 G4 Q5 Z  w
let i 0
. S" Z; J7 j( F5 e& x0 n) D! Owhile[i < people]& Q! o) e2 l% C; n1 c$ y$ N
[4 [( @/ k" A$ U" k; M1 D1 E
let j 0
3 l5 z5 T; G" M2 alet note 03 D# |; m: v) T6 v* n7 ^
let k 0! T  y5 t4 O& ]& Q
;;
计作出过评价的邻居节点的数目+ }$ _9 n- u7 I$ x* y1 Y1 v4 j7 }# t
while[j < people]' b; z4 W9 S- ]$ w+ _
[* M6 `+ H: c) g* p
if (item j( [credibility] of turtle (i + 1)) != -1)
# ]  {$ M; o, v0 i2 a* _;;
判断是否给本turtle的评价质量做出过评价的节点
6 e/ n7 v9 c* X, b2 m, X[set note (note + item j ([credibility]of turtle (i + 1)))
! k. k: E" f, F+ n5 N* H;;*(exp (-(people - 2)))/(people - 2))]

- |! W$ ]4 G0 u# m- aset k (k + 1)( n$ b2 M- j4 ?. R1 Q' H0 X! u4 Z
]) {& J9 V0 W% J4 f0 X
set j (j + 1)1 e$ N0 G$ m3 N: P
]
8 b* _1 n& l. n* a# u! Tset note (note *(exp (- (1 / k)))/ k)
% U( C0 J/ W4 l$ e1 e. F+ Jset credibility-list (replace-item i credibility-list note)
4 `# b' M% E% w0 O! ^7 Fset i (i + 1)
8 H0 [  W& E8 |- j6 b4 H% d8 G, p]
# T' X- X( {* b) ?end
: @" i& A" [2 _3 r4 C5 U9 h) H& M% O: Y8 v
to update-global-reputation-list
& d) p' h# h, J& ^3 a( l4 blet j 0
( P+ }) h6 n9 }) _while[j < people]1 D( N, R/ t1 O" A& C0 V/ E3 f
[
4 ]/ w, C" E) K# O# q' Y3 T( }6 _let new 0
) S1 y' Q) N* h% s9 J;;
暂存新的一个全局声誉
" t7 s. n+ c  I  j$ h9 plet i 0' }) p! q! k/ R
let sum-money 0$ j. v' c' O) V2 R
let credibility-money 00 C; q% I; m; X- C5 c
while [i < people]! E8 r5 l# ?  g6 @
[
7 I9 X4 ^5 E* T  A2 Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 p5 m# s% l" Q) U: K% `  Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 k: ]# G7 E- |$ C- Iset i (i + 1)& q4 P9 [# t& J5 g+ z% ^% w6 O% k
], W  J& c% h& l" O
let k 0# ?  x2 X' w- i; M' T
let new1 0
. e; u6 K' D: ewhile [k < people]# W2 o# ?5 p' s
[
5 n/ G, n" Z  g' uset 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 x+ v) v, i5 R
set k (k + 1)
. u4 s; L0 s, R$ C8 X/ k]
4 D- u) c7 k. J4 L5 Eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 c+ l+ ]% s( l$ v! U5 h6 a; }; Pset global-reputation-list (replace-item j global-reputation-list new): ?/ S% t+ f' X  N9 V) g' t
set j (j + 1)& t' `4 ~3 J4 J* P# A
]
6 s. O* F3 w0 R- send# g; }) C) B' z. V: K, f
0 T) W7 a9 e8 F% e+ w* h
2 v" H4 I" M' k$ T- u
: O/ ?6 n( Z& e% U1 }: X
to get-color! e" a1 T% P$ ^# z" L

5 u  J: B6 P$ z  ~4 Iset color blue

+ t( t. @1 U: ~1 _3 l9 u7 I3 E* Cend
/ ^2 U% I5 `! L, G5 ]" D. d$ ^2 L: X0 ~; D8 ]
to poll-class& p8 y" {7 F0 @, V  e) z; s
end4 q3 H$ Y0 p3 ]  {  T5 L" z: [
% M8 ?$ S  t/ ?
to setup-plot15 I$ k! m) I7 v9 K$ o

9 {% a$ _+ w& {( U& D0 g- uset-current-plot "Trends-of-Local-reputation"

, v" i  g& @) `6 r1 L
2 f8 a, @& u) l% s/ D" n6 cset-plot-x-range 0 xmax
( G  N/ o3 ^" O9 l. Q6 o
/ U; E. W# K* {% k1 P/ \
set-plot-y-range 0.0 ymax

5 V# F- b9 l/ k! h% q+ o! {end
& U% k* {( f, B
% M( v$ X6 C( E" ^- o: fto setup-plot2! f/ R5 D# k$ e
7 Y; E; G  `+ |3 E+ C; `6 X5 M
set-current-plot "Trends-of-global-reputation"

/ ]) x  a2 l( [" y+ b6 A4 w" p3 v) o6 P5 N; ~
set-plot-x-range 0 xmax
6 R: A5 A9 h1 v# t/ w

/ H! z, h2 |0 y; }4 Mset-plot-y-range 0.0 ymax
- e7 }7 E/ z& W8 x9 r
end' v& i  s: v8 ]) y- ?+ ^, i* s
8 S, ]3 f( w( q' o. O0 C
to setup-plot37 W& [( M/ N. c6 u. ^- u
2 E5 F7 O9 N0 [7 v
set-current-plot "Trends-of-credibility"

8 J* @1 @3 }- \( v! E) c
* k- A  T, D8 s; h1 Jset-plot-x-range 0 xmax

3 P0 L1 b! q9 `# x% c  M0 a3 O* [( C, N; g
set-plot-y-range 0.0 ymax

2 B8 p7 S4 `3 R7 E8 i" _6 yend
1 Q8 v5 V6 @* I7 B. m
; p& v- G0 Z7 K$ p* z6 Xto do-plots
2 h( d; S. @6 f0 m0 h# lset-current-plot "Trends-of-Local-reputation": _7 G$ O' O- T' n
set-current-plot-pen "Honest service"
4 J/ `; j1 v' P  G( zend4 j$ |* }  c4 `* r/ U
7 U+ q7 U( f. z* X4 X
[ 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.
$ D- v% v% J- m2 {- W- T
: ^) {$ L1 K3 j( r! x' _/ A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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