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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:, Y  t9 l8 ]) Z4 ]; h3 K
to do-business - N7 K# p" W- K) k; s# W
rt random 360: F4 t3 [% l% B+ n4 n$ _* F
fd 1
. I' U- \7 w- T ifelse(other turtles-here != nobody)[
- U- J* o' A' 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.
0 \2 O& v& p: M) ^7 y9 C   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " G- i- L) O  w; M3 U/ I# J' {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! ^4 [( s! B1 }+ R+ s  I2 \
   set [trade-record-one-len] of self length [trade-record-one] of self
/ s- N7 U# a; `   set trade-record-current( list (timer) (random money-upper-limit))
( ^! W% }8 C7 L3 m8 d4 `8 R, U3 q1 m( z. H5 E
问题的提示如下:
7 Z+ d  p- @4 B( L: x: v: P" w
  ]7 ~3 O) _1 H5 W* i  J; Serror while turtle 50 running OF in procedure DO-BUSINESS9 u0 S& _9 i+ A
  called by procedure GO
% \: `/ {( K- J3 f, WOF expected input to be a turtle agentset or turtle but got NOBODY instead.' w& E6 \7 D, U6 S( `
(halted running of go)
% D1 e7 F7 J2 K# ?, @: A8 h
; h3 U& C0 f6 G+ 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~~
- W& }4 I$ ?% K9 \4 Q+ h- i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
  w- P3 L* ^9 |globals[+ [- h* e- Q, z7 w, R
xmax2 j$ g. _4 L7 @0 P6 Q5 _
ymax. }# Q6 K6 p4 L  X& y7 d5 l1 J
global-reputation-list/ Y. }# m/ S  P
2 ~7 N  @5 u! f* m( Z
;;
每一个turtle的全局声誉都存在此LIST
5 f$ N8 O! w2 N% Xcredibility-list
  ^- o* e4 C6 s: c2 F1 P;;
每一个turtle的评价可信度
, d- D7 F* Q4 i7 Y2 X9 Ghonest-service  p1 E  M: I6 z5 O! Y
unhonest-service
$ r# L9 g  s' M0 `7 Uoscillation
8 [2 m( d( k) b) |! grand-dynamic
' D, i; ?0 U. |# i- Z# A% U( x]
5 k. r: m  Z0 D0 M  P9 r! \  b( I3 T
turtles-own[& N6 N. \$ m& ]2 B1 O: M9 ~
trade-record-all# f* }+ b9 s0 U# `
;;a list of lists,
trade-record-one组成5 p# r! o$ A2 |% u
trade-record-one
7 P6 \5 Z8 w1 g$ v' m4 w( p;;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 G0 X* C  f# ]$ o  L
% v' X1 a& [$ }% J5 {;;[
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- H& V  D( L% @/ C2 i6 d; }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 ?/ ~/ u7 ~' b' \
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' t/ W6 y+ Z# ?4 p8 U  v7 o
neighbor-total
& v0 C! _+ J# r3 O& A; _# x;;
记录该turtle的邻居节点的数目. F3 V3 }. X; v4 m& }8 s: ~
trade-time
- U2 t( Z- z/ _8 ~: L; Y8 b8 G;;
当前发生交易的turtle的交易时间
. l/ _+ ^' y4 ]# \4 Pappraise-give
4 \' l, V# \( z+ a* m8 G+ G;;
当前发生交易时给出的评价
9 \" K0 t' }  V" u- Mappraise-receive0 T- S) a. T( h! @, `9 W' ~) I
;;
当前发生交易时收到的评价5 h$ G& h; [0 z+ H1 r
appraise-time/ E5 Y$ X7 ]! F+ n# R: g# L5 q# M
;;
当前发生交易时的评价时间
, a. G! ~4 D- Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 ^" x; G  I; u: b6 k0 y. w, otrade-times-total5 Q- y0 E% x% ^8 G5 s6 x/ o
;;
与当前turtle的交易总次数
2 j( v( Q/ v1 m' ntrade-money-total
: U% l( L9 P- Z0 q. ^9 h2 J( I! s6 Z;;
与当前turtle的交易总金额' S% x: W* {  e
local-reputation
3 h% H$ Y! n( y8 l7 S8 tglobal-reputation
! ^5 X5 ]% u6 ^! P7 b4 ycredibility5 f, O  f% E* @9 E/ R1 ?; `/ G
;;
评价可信度,每次交易后都需要更新
2 X& K' O+ B. W/ p# ucredibility-all
3 a1 E1 e" i5 `/ L;;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4 T  p  w" y0 m5 D

, N) N: l! G" J;;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
9 _* C  O6 z# f$ g0 g3 ocredibility-one. U/ }) D. k- E& C! `1 P4 F; n' }
;;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
5 T9 ~# ]; I5 s7 B& [global-proportion
/ f' p  E: G: I0 p3 P( T! dcustomer
( `$ |9 ?1 b  u: L/ wcustomer-no
2 Z. e: r. [1 ctrust-ok1 X# w0 t, u% \5 B6 t0 n; f
trade-record-one-len;;trade-record-one的长度
7 b/ \# ~  M' m]* w+ I  r! }. O* @8 F
' F& l# Q7 `" S
;;setup procedure
) h4 Q5 }  w- |+ ]" J: h+ I+ ]. k9 E! U# v
to setup0 _3 L7 w' P; \& J( H  p
' |' p" q) e. W
ca

/ p, `) W- I  `4 J$ P
3 Q* V3 L9 {6 k2 f9 einitialize-settings
: X" V  F/ f4 l5 M4 R

9 [; r0 a/ H8 t, T7 jcrt people [setup-turtles]

, L9 c! Y3 A- T$ `7 e0 a1 L* I7 M5 @1 b# O6 |7 q' I. t
reset-timer

8 q9 K2 r, r; \0 |  s3 k9 u/ ?2 e$ X8 g
poll-class

" x8 T( Z7 o3 ]* z1 J' o1 A  V
9 R0 S% F! u. {$ v5 Usetup-plots

- T, H& Z) W# s# u& D0 E/ y& f+ P3 h- s  j, Y/ H8 |) u
do-plots

9 Z9 c) H  z+ v7 C3 W# hend- b# r2 u9 i) U% D2 N) T0 d) {3 B/ C
* N) ], G8 p' D) I+ v$ _
to initialize-settings
. F9 J, M# K& @6 F& L/ A. E7 `/ f/ _& N7 K2 G+ q
set global-reputation-list []

- L3 K$ {& f9 ~+ H7 T. F8 D" P" ]1 L5 A7 M8 r
set credibility-list n-values people [0.5]
) [( n0 k. s- }% {

! }( O8 I$ z0 J+ ]0 s2 ^& Xset honest-service 0
/ @9 `4 U/ C2 E8 {4 y' f% t) x

6 A( w" }$ J* a$ b/ Uset unhonest-service 0
) u7 W# m; v4 s, d4 K

% K- r4 {4 r" g3 Yset oscillation 0
. \% b. k0 m, g) a$ P4 b# Q7 P
1 _) L# P2 X6 o  S- {2 Y. r
set rand-dynamic 0

" I$ K# Z% ^8 Q5 m8 Eend9 C" C1 U( ^9 J
7 g9 K. H  g* n
to setup-turtles 5 z5 T( s+ n! Y* L
set shape "person"
" l( o" u7 d$ h3 N7 l! c" d; Psetxy random-xcor random-ycor
4 p; h/ M" K8 C$ U  \" S4 @2 P& [set trade-record-one []! O6 W6 Y+ o7 v# Q6 d7 o! D1 T4 ]
# M; t" g" ^4 b
set trade-record-all n-values people [(list (? + 1) 0 0)] $ G: d  v# j- Y4 e' q3 }; G

1 G6 p* `$ V6 lset trade-record-current []( D' B. Q7 T, {4 q3 w9 ?, n; h
set credibility-receive []4 s' W: }0 v" \7 U
set local-reputation 0.5
: B6 K) i% G$ b1 ]/ }set neighbor-total 0
! t3 Y4 {9 ~3 v& S% _* Yset trade-times-total 0
2 t& m. p5 l7 Z( {set trade-money-total 07 B6 g1 U4 ^' U; B- j
set customer nobody% k) T( ?* c2 [' s: j
set credibility-all n-values people [creat-credibility]5 ?( t1 a' h1 D( V) [, [
set credibility n-values people [-1]
! P2 l4 V# i/ B& r/ e4 c/ ?+ {get-color
5 V. T9 w: e& ]

8 ^% O( T% N7 C, _end% x+ A7 f* H6 d
. I' f" U; z* O- o' ?
to-report creat-credibility0 G3 _7 C2 e+ r$ K9 ]
report n-values people [0.5]' r0 N) B* _6 O& M( c, j
end
. ]: E# [9 r: G. D, U7 h4 [4 w. z) x  o, l5 c0 D4 |
to setup-plots
8 L+ J- V' `" g
. A* U6 z0 L+ r# Q  Y* [8 Hset xmax 30
5 Q' _* }, L- D1 s  n
1 d* G/ k- t1 e+ i
set ymax 1.0
9 E! j( T7 O1 l

% S9 f  q3 b$ }5 F% e) rclear-all-plots
/ a: \1 }' v6 a+ r- S

4 f/ L! m/ {+ M9 g7 Osetup-plot1

4 R2 \; S+ A0 ~/ \3 I3 I/ v: \" _% v6 b" t
setup-plot2

# K+ U2 T" j7 L- t0 d4 ]2 t9 k/ d7 n  i- N4 l/ Z, Y
setup-plot3

0 [% W3 e% F" h+ B( z$ f. o8 Cend5 J! e7 r9 K  f/ |8 N1 {3 v
* m) F7 m, W2 J& v! [9 g
;;run time procedures
; U# O5 m& w! [1 e
% {; O7 c; m3 h- ]5 N% Pto go
. f. {: p2 G, Q5 N& V( m# G# v. \0 s" D" t2 g6 O: A5 [
ask turtles [do-business]
+ s- \% b. z9 _1 }- v9 ~
end
1 a3 g/ l, e: H; t( g6 y
9 Z  x! \4 G' c: Rto do-business
' e. ^7 t' v; ]0 b

* V* X8 m0 Q& D. A/ M- a3 C7 n
/ m. a8 H4 `+ [3 j' Vrt random 360

5 C6 x8 t2 g* r, w5 M  ~% F
0 o/ |. M6 \! ofd 1

0 {+ j; u8 ~! N' K- H, l! M4 V+ b7 X; Y7 H; k/ w
ifelse(other turtles-here != nobody)[
8 I4 P( p! {$ n. W# u5 y, t+ i4 K1 x* m
& L: n8 n) s# R4 ~' M
set customer one-of other turtles-here

1 \. r/ V$ t# V' F7 P! ~& |& X0 m( [/ \# W6 L( d, n; L$ b
;; set [customer] of customer myself
& Z+ Z/ o, S4 V9 _

" w5 M1 o% F+ c. C. f& _% Lset [trade-record-one] of self item (([who] of customer) - 1)
5 s& R! e, @$ v9 G2 z, c[trade-record-all]of self* O$ {4 a/ S4 |/ {- p
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- T* i- r5 l2 N* U6 a4 v

, ?/ V5 T6 R9 a/ k$ O; t* Yset [trade-record-one] of customer item (([who] of self) - 1): y! X! q0 {# ^( O, g' w" q
[trade-record-all]of customer

* w3 e) y2 N. h, z( D; q; C  W" P4 D4 f" E9 R/ T
set [trade-record-one-len] of self length [trade-record-one] of self
8 J. a) P- O- r7 G$ K; S' B6 E9 e2 y* ^
5 L8 \8 s1 i. Y, I. _, S" [
set trade-record-current( list (timer) (random money-upper-limit))

% r, Y) H0 Z/ p) Z! x: _4 O2 v
2 o' V# ~0 Y- u* M' [ask self [do-trust]8 w: |% S( w( E! n; \7 {: f
;;
先求ij的信任度1 W& B, R, i  O* |7 {% d% V5 G2 z
8 I$ W9 Q9 L7 u0 C) z7 H7 F: j4 J
if ([trust-ok] of self): R% f$ V- Q, }# [5 h  X
;;
根据ij的信任度来决定是否与j进行交易[9 w* y, [) |9 s2 f3 n0 j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 ?2 J+ @1 Y$ ^0 ?$ P1 S' y: Y$ N/ h2 A1 W' d0 c" ]# a* J
[
0 V4 D3 p4 ]6 z, g6 I
( L% E/ g2 F# k8 T8 S0 X
do-trade
; i( z8 w0 K% D: |
$ Z% u$ \' w: A9 N! p
update-credibility-ijl
; ^: m$ ~7 }5 C! ^
2 a* d9 m) T) @# l
update-credibility-list7 |! ?0 [, ?6 m, q7 j
! Z) U3 \: x8 X! e' E' U

2 A" x( h5 m  _+ vupdate-global-reputation-list

7 G& L! V) P* C& s
. i" u0 ]6 Y6 S8 |+ r! G# @poll-class
. r% V0 {; I. U, L: z. U+ C( w  f

8 f# `: d) D7 X& ^8 W6 g0 vget-color
9 Q7 ~5 {* m4 T! s, f+ V5 i8 t1 J
; d/ S$ {, m. S. W: ^" R1 h( w
]]
& w$ Q5 Q( m+ h2 Z: \3 H; F% {8 m1 k5 q9 }" {# }/ y8 V
;;
如果所得的信任度满足条件,则进行交易
# z$ Q5 g% Q+ E$ K- `1 i$ z' \% u
[

7 C# s  D, L2 X; e0 T4 M8 x6 r
- C+ p: p) e/ ]$ ?# e" F+ Qrt random 360

( b& C6 J* p) t3 T3 ~8 X' w# \' I5 A* S$ l
fd 1
  E6 i/ H6 k" W. m  W0 f$ h6 K% d

7 Y% W" A! w! J$ R. Y* u/ E, q$ \]

# o  w9 r' @. z/ p" h" j  w3 \) |$ q
end

" ^  U* W7 b( u0 O9 @8 t& w# D
- p. }  K) \6 C% y3 rto do-trust
; {+ C) z! l0 x* h$ E7 Dset trust-ok False+ d# {0 M  t3 U! l$ ?
* E! Z6 |% C0 ^5 \- b
' d4 D) b* t  }
let max-trade-times 02 ~( x3 ~8 w/ r" \% L5 l% l- ]2 r6 m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: n& n- f& o( H! ]; D8 Z& I
let max-trade-money 08 M2 g: X5 q. J8 ^& h9 g% A5 w+ ~
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% t  |+ M* H! |- W  J- E' t! s
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ L7 ]+ J$ u$ E% d7 E% ^& n- {, a8 n5 G
. L+ {+ N! g( k9 `: ^
get-global-proportion
2 B: h' a9 k, V+ x6 E0 ~let trust-value
" x2 A& [0 y. i* H7 Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 P5 z: U5 `4 t; k% Z7 N+ fif(trust-value > trade-trust-value)
0 p- R1 b% _7 M- ]  \[set trust-ok true]
- U. g7 N" ]# W7 u) O  Q( [end
4 R$ w# Y$ ?# |) S& v* `+ t
4 T1 k. f; X5 g, kto get-global-proportion( l5 ^0 r* }# ^1 i: V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* V2 f& u% d" c- A
[set global-proportion 0]
! z( F5 g  K8 Q+ a[let i 08 I9 y# E4 g0 G. g9 j
let sum-money 0
( ^& l. j" u8 n) k& Lwhile[ i < people]
. `( J3 i$ ?6 v# @[) U' `/ a! G7 }; M/ h, j/ v' V
if( length (item i' ~" ~& }3 W" S: y1 O
[trade-record-all] of customer) > 3 )

3 U' o% B9 ~) N+ P8 F& |2 s" B[! B# b) O: }- Y5 l% T1 N( [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: o4 f) {. t% f7 ~8 H$ q2 L]  i0 V" J/ v( s1 t* W+ ~
]. p: P9 L, h" b) V) U6 `
let j 02 t% y* y( y3 {3 `" }
let note 0' ^  C4 b& l3 _% r
while[ j < people]
/ p3 e: X5 u# j  w9 |) ^! q+ `[
$ T2 T$ d2 y% |$ Qif( length (item i1 ?9 C2 R/ L" }: _
[trade-record-all] of customer) > 3 )
2 Q" s8 t5 E7 _
[
/ w" O( m5 @2 Iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 M, m3 c  c: t( v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* N! y- M$ O& Q3 |9 C9 H/ P[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 F- g3 _3 C, B( f; [- c
]
. \+ Z: v8 g, g]
6 F6 e4 n  |. Vset global-proportion note
8 E* o7 }" F/ J" r. S" P' c7 v]
5 c& s# s& R. C, d7 Z6 g0 \end$ }- g9 a' w; F' b; `: O% ?# O
; ^* v( |" U9 v% R+ ~. H$ r
to do-trade' a5 `. _: p5 V8 R
;;
这个过程实际上是给双方作出评价的过程1 M$ O- d4 E, y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. W1 C7 D" M, q8 K( Z$ p$ m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% ~( e! U/ T1 a7 ?$ B; V( h2 |
set trade-record-current lput(timer) trade-record-current% Y  ?7 u" N  v8 u2 S* G' ?
;;
评价时间$ a7 X0 ~7 r# ~. n
ask myself [
' ?) p* Y$ c0 `- E* i* b1 s8 Nupdate-local-reputation
" I* \" b' r& s! i, n/ q" Nset trade-record-current lput([local-reputation] of myself) trade-record-current$ K6 t; l" g& {7 S# d, l
]
, z! b% p( Z4 O$ w5 {: b( F9 ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# s$ P1 L+ K( q% M
;;
将此次交易的记录加入到trade-record-one
- Z0 |! m6 w$ _/ H1 M+ xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 }: m- s8 T; \" F' q$ G  t0 @
let note (item 2 trade-record-current )2 \+ p  F9 z3 r6 V' i0 S6 u
set trade-record-current
6 y1 Y5 p  s+ b2 R(replace-item 2 trade-record-current (item 3 trade-record-current))

) h% @2 e  ?4 @set trade-record-current
  B2 M6 T, H. p+ j3 O6 \; V( y(replace-item 3 trade-record-current note)
, i" h0 }9 G, R9 X: [' I
; q, Q: q( n% O2 @  N3 F
9 b8 a/ f" ]4 R0 e; p2 g
ask customer [7 a2 O) t; x7 q3 Z' `+ i9 C5 [
update-local-reputation! q# ?, [* ?3 y$ M
set trade-record-current
. N9 ]9 K  Q; j# u9 o8 D) O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& ?. x# @% f" @9 J# L2 I
]
5 r3 F: G$ T8 t2 o
9 }- z. D* h& n8 Z) t$ _# l3 z; m

/ g" I: r5 {# J+ Q& T5 _# Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# q& ?" {4 p* ~6 X9 K0 X1 }

6 V8 `" t- }) B) |' P4 Q% I6 Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); o$ Q& }6 f" j+ _6 K: E( D
;;
将此次交易的记录加入到customertrade-record-all3 c* f6 b  P+ Q2 t. z
end
* U9 G" T, Z, Y2 u
6 c/ V/ m: a$ E, Gto update-local-reputation
$ z% }9 A: ^9 w; [set [trade-record-one-len] of myself length [trade-record-one] of myself, Z+ V  J0 V9 o
2 Y$ s% u  J4 B  J

- d5 P5 r+ Z' M. r; W; @) e;;if [trade-record-one-len] of myself > 3

7 e7 O4 q* V  W% L7 Q: f! zupdate-neighbor-total
1 J# L- N) r0 h2 \( O3 {;;
更新邻居节点的数目,在此进行
4 m5 T  {, r, ]let i 3
9 c- Q! D( |. U" glet sum-time 0
9 v) v6 K6 S& m# N/ Z! Kwhile[i < [trade-record-one-len] of myself]
* T2 R$ i0 f4 m( [[
! j$ @& x) F* I0 w8 u9 eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 s6 W. e) V# c+ y- \) qset i
/ k# `4 q. I/ Y. c) j( i + 1)
1 R6 |) g* [1 K( u( F
]- l- E0 a' d' t0 T, w: X
let j 3
4 A8 w( u2 g! C2 [/ |4 |, {. T3 Elet sum-money 0
: h# y+ ]9 z! |& Qwhile[j < [trade-record-one-len] of myself]) j  g8 `1 T; p
[
' O, b4 i; ]2 @. T1 G  yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time); q7 v1 @5 i# ]# X2 F2 ~  b+ ~
set j
0 K' N# l1 R7 ]1 L1 r1 p( j + 1)

# {9 H9 g( p1 @4 W4 K& t2 p2 M]% q: q) H9 H- ]* Z! D8 T7 q
let k 3- a; y) D# `3 @; b
let power 0
. Z3 m8 K! H* }( J8 R& Olet local 0
* `2 Z0 J; i* O  b1 d! Mwhile [k <[trade-record-one-len] of myself]9 n/ w6 F, Z$ V
[
9 m0 v, H! x# Lset 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) 5 m, @* _; l$ n0 C: @. F& x0 d, ]
set k (k + 1)" ?8 f4 k3 {& t5 r8 j6 z
]
, c- h) L- L5 ~* d5 S. o( c  ]0 T0 _8 Hset [local-reputation] of myself (local)
: r# ?9 \" X) n& j2 f2 ^- }; p, tend* b# I/ d; K" ^+ Z8 L) |; M2 k
3 O; z6 [- M$ _- Z9 _4 G2 [
to update-neighbor-total
8 T" |& Z4 c* O
' Q- ~5 h! g, Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( f: v; r4 M  N% i  {$ S% R$ ]6 E
/ L% y: X, G1 |$ Z2 a9 u0 r+ n
: h2 [" ?  \& m7 ?% Y- S8 ~
end
( A% l" g/ |  f( O
" C. f' H2 z# Q5 N/ k  q  Sto update-credibility-ijl
0 R( S9 |2 p4 Q, k2 G0 y4 Q
: P' d# r/ @! o;;
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。8 }1 [0 Y( b. e
let l 03 i, _6 z1 w7 j$ \. B
while[ l < people ]0 Q6 ?- s) Z% r, ^
;;
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: B+ d7 b8 a- g4 [9 h, M
[
- [" }" J2 d1 o, s; p! U0 J/ _! Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( _0 ^& M8 B) Z' t# {) Y
if (trade-record-one-j-l-len > 3): b1 @) k2 H3 G' Z
[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
4 Q, b- H9 l  r( Llet i 3! s& ^5 j3 A0 N$ K8 x" v4 h
let sum-time 05 R4 W+ r" L9 f' H* F2 @
while[i < trade-record-one-len]
; }  D' r. b6 C: Q' C8 q/ t, ]6 A[
: D0 m7 T/ Z3 P4 v) Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; R/ T' E! G# L: s% V! [! i. Q: W2 lset i
, C! R2 m9 r0 O" x- R( i + 1)

, q5 U4 E% b3 Y4 ], m]+ a" q+ @/ ?3 h" t0 b
let credibility-i-j-l 0
/ `+ f1 l# g" _/ o0 _;;i
评价(jjl的评价)1 F6 A# ^9 O8 u; U4 B; }4 T/ o
let j 3& |  p) m+ f  X+ u
let k 4& c) z5 J4 ?5 z4 W* a
while[j < trade-record-one-len]
0 K5 v3 ?9 @) R" ]6 T$ C[
5 X" o' A# G0 b% q. D% @( Swhile [((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$ F. L' P  t; T# B( ]" E: J) U
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)
# t) k+ U' D( E9 j0 ]set j! y5 N, _3 U+ g3 w, W( j
( j + 1)

2 k* x; d9 C# r: x2 a]+ x) t1 S: t8 t; `1 V2 j
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 ))
' o8 Y/ c* h9 I# |/ l; k( n2 k2 `/ V8 G$ H

# l5 w9 o9 |; r% E- X8 olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( g" R% g' j0 S;;
及时更新il的评价质量的评价
5 E% ~; ]6 i8 a! f6 f, C, [1 {% vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; K. U) B2 d; I1 K8 |
set l (l + 1)1 R. n) K/ \2 b5 w
]4 r- J: n% c, T5 L  X
end) v" m) I9 ]0 K( ?( Z: e: s
) n6 C4 i, m. L  }. t+ U
to update-credibility-list0 Y6 f( f; f1 N& H7 d
let i 0
3 t/ l( }9 N/ @! }- j  v9 Vwhile[i < people]9 y& B+ [5 q. w% U$ ~
[
6 x& _- j$ T: W' y: klet j 02 d# f) k2 r' Q# A; I4 B
let note 03 X/ w2 C8 ]& I* |, z
let k 0
+ j! G% f8 r' Q% B;;
计作出过评价的邻居节点的数目& j3 z& D. u$ t) i$ e
while[j < people]
2 w3 I, o  \! D[
% k% z6 C- y* s$ m2 d% }if (item j( [credibility] of turtle (i + 1)) != -1)
7 D9 r, U/ ^% R7 R7 |0 I. I;;
判断是否给本turtle的评价质量做出过评价的节点0 g7 {+ w/ y" J1 z/ `% g; z
[set note (note + item j ([credibility]of turtle (i + 1)))* i& |" D9 }& u
;;*(exp (-(people - 2)))/(people - 2))]
0 k  n' {' U7 R8 S8 L: |
set k (k + 1)0 h0 D, P4 w3 t+ I! v
]8 ]: e. v$ D" B6 V
set j (j + 1)" x' n8 Z4 o- y& n
]- G: g# p* j& D  R) q. k  E
set note (note *(exp (- (1 / k)))/ k); D, N6 k+ h/ Y! N7 p. B
set credibility-list (replace-item i credibility-list note)8 G( i" C9 d) Y2 ~; h) L
set i (i + 1)
& H7 h+ N+ G- i; }8 W]" I: M, `: n7 s& j" X* B" g
end$ `/ Y9 O1 o. [7 ?% F; |6 m, h; i2 {& N  J

8 v* Q0 U' y! o9 d. Q! Vto update-global-reputation-list
: Q! y) X: b0 x$ {let j 0
( A+ ^0 `" ?+ `7 B" g/ [while[j < people]: ~5 s9 X% H6 n* S8 o: _; c* d
[; Y# d* e9 j2 E5 M3 a" V$ U
let new 0+ h: s5 j1 |! v
;;
暂存新的一个全局声誉
3 F# A" u& y! S$ `let i 0
8 R' ^' a) G2 E( G% Q+ [( k& ~let sum-money 0
* a; k& B$ M0 q0 X# x- Vlet credibility-money 0/ c6 C5 u; r; x
while [i < people]4 C2 O5 E( o0 e; Z4 a
[+ R# M' P  c  j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ v& \  E1 Q7 w% T; W" c% n- kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 I+ E2 r% k- pset i (i + 1)
6 H- N5 P5 m: V6 B; J6 _4 O- i]* {: r; c+ e& q6 K% K6 g1 R
let k 09 ]; Y5 A: P0 f9 F" z3 H
let new1 0
) v- y$ x/ D- B3 xwhile [k < people]3 s3 `5 l, |; b9 T
[9 i+ H* S' Y% F% [* b4 K% C8 V
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)
5 S; A4 j6 I  R0 \* W* g, n+ dset k (k + 1). _! U1 A" ~0 V7 @4 D4 z, Y
]" a1 b, F3 c9 g7 U6 f7 E4 ?
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ }' P) Q* y' b8 }8 `4 C* I  A8 z/ I; Lset global-reputation-list (replace-item j global-reputation-list new)" }' r: z1 `9 c
set j (j + 1)4 C. B0 j4 s9 ^* g! B
]; V6 ]& J# @# u( d' s
end
1 H  l) P/ k0 f
# q) ~0 V" V" \" ?+ L: F
- ]6 ]% B3 U- R# \9 i2 O8 _5 k( W( v, {% f
to get-color/ V, W% Y3 s4 R: S! z; U

3 I- g3 q$ G3 p7 |9 e$ Nset color blue
0 T  n! [% x& \+ `) I0 j1 J! F
end
1 S! B8 G9 A& N8 s
" r8 y, P" i/ I2 f$ |3 \to poll-class
6 X; @! ?- q  f3 i8 L0 aend
. G+ a! |( C* P: Q/ F  s4 [, I
+ R( Z9 h6 ^3 \7 B* p! H2 g) Uto setup-plot1
6 J2 O( h* e9 s' V& A5 s: z0 h1 z0 F1 y% V
set-current-plot "Trends-of-Local-reputation"

0 Y/ r! f+ \* _6 J/ v1 B- }' f7 ~, H; a/ t3 ]) y
set-plot-x-range 0 xmax
+ ^/ j- |0 i: U; u! }8 }* X
  V- W0 w. N/ B" ^7 l  d
set-plot-y-range 0.0 ymax

1 W: P; ^. e8 I( y' Wend6 ^; N3 U6 N8 \2 |1 Q
8 X/ [5 x7 G) ^
to setup-plot2' E' k% O" q, q% _& G6 y

) W; o0 k9 g1 z6 T# K- _; V1 @set-current-plot "Trends-of-global-reputation"
6 e5 O9 W6 F& p( h
" E: {) {( u' r/ e* r
set-plot-x-range 0 xmax
# m  @9 Y' n' B' g
$ b: A8 B( j* r% r9 D+ K. B% Y: d5 q- k
set-plot-y-range 0.0 ymax

" ], k, F5 `9 u( r; P* E- {end
3 F6 D; c5 {2 k# ~
- b4 z2 o' v3 z1 {! B' fto setup-plot3& P2 s6 y% [8 S- a

# `9 ]1 l1 F6 b$ ]; nset-current-plot "Trends-of-credibility"

/ c, f, A9 a- M) Y& o
0 j( L' n( M. `- g" n) ^6 nset-plot-x-range 0 xmax
) D. U/ k# P  {. W: Q
! s( T$ [* q& y. |  H
set-plot-y-range 0.0 ymax
0 I* F  }0 k6 N& I; m
end! H( ^! {- s1 g: y9 t1 R

/ {) N4 R# X8 ]6 p% z+ ]5 d0 p: Vto do-plots+ {3 O" E" w- o5 J0 w  i2 k3 u
set-current-plot "Trends-of-Local-reputation"+ `: D2 y$ t1 v9 ^9 @  Y
set-current-plot-pen "Honest service"
* b# [6 D3 N2 Q/ Hend- F; I" F, T2 T+ k. w
+ p. ?' I5 k& g. O
[ 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.
% T' @6 r* v/ g( b, j
, k4 Q5 X: H2 m% N- n6 c" ~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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