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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) \; M( Y8 S# i+ @; {
to do-business
8 K& w) S' E4 l7 J# G7 A9 A+ L0 r rt random 360
% v, x3 O6 ]1 A7 f" k fd 1
% ]* A8 u6 Q* d' G7 U4 _( e ifelse(other turtles-here != nobody)[7 f: ?- W& d. R8 y8 Z4 I
   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.
. S% ?0 |! `- A" \2 m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ v- @- g5 V+ h% a  ?! U  W3 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: B2 {+ s6 \% R+ A1 Z   set [trade-record-one-len] of self length [trade-record-one] of self
+ X8 Q0 A, J# W: D   set trade-record-current( list (timer) (random money-upper-limit))8 T; y9 w' `" k
0 f4 {" S% a% ^  P9 C5 S( U
问题的提示如下:4 d$ P) C. D) s) R+ }5 U0 a
$ E: t& a* w% A9 q' ]* X
error while turtle 50 running OF in procedure DO-BUSINESS
% y) v4 v. |9 _; T5 k; H  called by procedure GO
; @% O% z# o) F" T7 ^: oOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 U! G- t$ C4 M* N( Y! r
(halted running of go)0 O- D4 G3 U& K; y6 w
2 f4 Z) n# o" K# p9 F
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~~
. F* P8 q8 Z1 n) A: @2 Y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$ Y5 B3 b7 n( E, F2 [: u
globals[: F8 o" Q7 q) F" b) {
xmax" b6 o7 }1 o. x  C+ I
ymax
' s& I5 z  M* J/ Xglobal-reputation-list% Z0 j& p* D. S1 S* ~" ?" Q
' j8 _% J3 F6 y
;;
每一个turtle的全局声誉都存在此LIST9 I# `* {) {1 k3 ?
credibility-list3 a. f( k. J$ ^
;;
每一个turtle的评价可信度6 o* `+ B1 t# h: ~$ O
honest-service# V. N; O+ @3 d+ b( ^
unhonest-service$ e0 H, e3 w* ~8 C
oscillation. h5 ?/ s( \" F8 }9 T. z: U
rand-dynamic
* z2 n" w+ k4 S]
8 T: E1 x' z! W* P; |$ k3 R3 Q) j& v* I: ~1 _1 p8 [
turtles-own[; ^% r$ T: R8 \' E/ D! ~
trade-record-all3 ^7 G- E' O' _5 V4 y
;;a list of lists,
trade-record-one组成8 F1 T0 l" l+ F# J  J/ k( o
trade-record-one
( }5 g* z/ o* U* f2 b;;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) S. V# J3 Z# e) z& H

5 @  Q7 Z7 F* M, Z9 _;;[
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]]
: t; w0 a1 `# N3 ]4 mtrade-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]
% U" \9 U2 R6 f! T: i4 ?. x" x$ E/ ^$ dcredibility-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  {1 K1 `8 o0 w, M" c$ a" ], b$ P: Gneighbor-total
9 t* q* q/ [  i& y2 V;;
记录该turtle的邻居节点的数目
+ C0 ], Y. A: |1 ]& v8 L5 M5 I4 @trade-time
: g6 E' \1 Q. u" C4 \4 v6 P;;
当前发生交易的turtle的交易时间
% U7 D8 r, z$ O) t3 b+ Xappraise-give- [3 y. s" ^6 D) x' e* |. c
;;
当前发生交易时给出的评价
  ?! r( ~! f; p; O8 }appraise-receive: S* H2 `) Z' c; `+ M
;;
当前发生交易时收到的评价
+ d1 H! O- P/ p9 E# v; wappraise-time2 \6 W% t" p* A4 N, `9 X# m
;;
当前发生交易时的评价时间9 B; s) ]" V; f7 i7 b( B3 `4 O
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 o' E9 F6 L/ i9 s$ w0 k4 _
trade-times-total8 R# N1 N8 G+ K5 S* ~
;;
与当前turtle的交易总次数1 j# p0 @8 i" D( [; |$ r
trade-money-total4 u9 L! \4 Y; M- {, F
;;
与当前turtle的交易总金额2 Z5 g% B4 Q3 r/ c9 u2 T& }, b
local-reputation* V1 B' s3 t0 }* L0 r+ H
global-reputation
2 M. ~/ l9 z, b1 `5 y$ Fcredibility- \0 e/ Y, E9 ]3 i% ~* H) ?
;;
评价可信度,每次交易后都需要更新
6 b9 ]: m1 ]; v$ R: Rcredibility-all
3 q% q$ c% j1 k+ N, k;;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! H2 m4 q1 f: `

" t! g' {  p4 f6 P' ~/ Y;;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
: ~, N9 m. y: {credibility-one  a: K" q) ^5 j1 f) C1 P
;;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people9 A9 H. w. W" b
global-proportion; I0 b5 t' s9 y, h: ~
customer
$ c3 R- j# N% B4 Y$ h, xcustomer-no
5 X# D* E9 N6 t; A: F5 Qtrust-ok
7 F& J. n( [* c- H! itrade-record-one-len;;trade-record-one的长度
, r" C! ~( @! i2 z" t) h]. `. C" e4 \5 j$ X

; _+ b3 p* H7 n% D, p;;setup procedure; }4 w1 H$ Y+ ^. x2 W/ R4 y

# o% K9 \( S. Y6 J0 r# yto setup
" _7 p5 R, w6 n7 R9 e/ ~  q, P0 F3 ?; ]/ M. u# h* |1 ]1 ]
ca
$ ~' d' w) \$ Z8 {1 W; m
$ R9 g2 F" {$ Q4 V, j" C
initialize-settings

8 N5 i- E) Q+ |- v
- c' N5 h4 n: P, q, Ycrt people [setup-turtles]
( p: B4 T/ s/ M
- u! j9 t  c( v8 B; ^! N1 a
reset-timer

5 V) L7 L' R# b% x) f. d0 G& C) ?& |% h
poll-class
' K9 l( z/ n# |* N9 ~7 t
3 c: u& a/ K& ~8 `: f* {
setup-plots

( a# j% F" L, g, L0 X- n) _( ~6 x- E% w
do-plots
+ J  y9 H8 |5 `4 i. e  e2 Y
end( E: i( _6 H0 T0 g6 T

: E; ^; l4 `4 p6 Z  P- q: r3 D" Z% H; cto initialize-settings; D$ o3 w0 O% y
/ N" C9 U9 H, e' R
set global-reputation-list []
- Y8 T9 W; L" k; n+ d+ e

- e) i6 J1 U( j5 c- o2 }: E8 ~6 [+ I4 Wset credibility-list n-values people [0.5]

& T/ a' p- n- Y! f2 E; f
4 k$ X& k( O- k: Oset honest-service 0
0 A" R4 P$ H1 o& g6 s
$ a. y2 E; n+ c- U2 u) A5 o1 ?$ I, i
set unhonest-service 0
  h) W9 t9 t! v+ u, L& W" |

$ x0 M5 R, d- Iset oscillation 0
7 o* z% F7 u4 o+ U! s3 G3 ?
" U2 S7 L0 |  D* a5 ~$ r5 d- \
set rand-dynamic 0

' T& ^  p" p; t/ {end
% p7 _2 x- `5 J
& M1 W  T! a; ]/ {9 j% fto setup-turtles " b8 ~8 @1 H) j4 d' ^/ N- s
set shape "person"% h) l7 [$ A/ O! E' F. b6 Q- L
setxy random-xcor random-ycor
( l3 o( |  N, n7 O) ]+ Bset trade-record-one []
2 i' ]5 p8 C/ ^: r6 T: B
* S: N1 W' w! E! W+ ~
set trade-record-all n-values people [(list (? + 1) 0 0)] - u; P+ k6 V# G0 k9 A

5 }0 Q7 K+ b, z7 K, aset trade-record-current []$ e) |# D: v# `) b& h' Y, H! ^
set credibility-receive []: z$ R6 s# M% v" |  e* I1 u
set local-reputation 0.58 c, F2 T& }' _2 R4 Y
set neighbor-total 0' t6 N% r2 ]: P0 n  y. S
set trade-times-total 0
' z- m3 D- [$ G6 }! n8 [) \set trade-money-total 0, a) S- w+ T8 `* F7 i* n& a5 A3 v
set customer nobody: r  u+ I% r- I' }5 _- A( M
set credibility-all n-values people [creat-credibility]% Y- L* Z$ y, m1 G1 v0 e
set credibility n-values people [-1]
/ V- H9 r0 @: Eget-color
* ]: P: v# o$ ?" S- e* S7 L- M
+ [% R6 k& ^3 [- F1 t4 d
end( {9 i$ n, B! ^- v

8 W( T& p3 d+ Mto-report creat-credibility) K: U. Q6 w' Y) K2 B
report n-values people [0.5]5 g4 ]* v# z- I% G; z
end. c( w$ f$ `. Z4 n6 @/ H5 B" a/ f
( M& r  e& L. b8 s9 d/ t  S6 }
to setup-plots# k3 U2 n$ a3 S7 X
4 q! r2 F7 r: Q4 _0 K9 e
set xmax 30

* C8 U" z8 i  |% z: {, E+ h4 c' m/ T9 G) x# H- Q! z6 T
set ymax 1.0

6 l! K: J# z. \$ K0 D1 d& E( J7 H3 p- Q& Q
clear-all-plots
' U6 h# a% V- u. G" v- K& k

1 l2 ?0 r" R0 |; g" a' i+ F& R2 r1 c% Hsetup-plot1

0 f$ j- h0 {; w, r
8 d# b5 [6 a4 ]4 L( Zsetup-plot2

; v% Y+ l& P" ^# W
8 y% K; R9 D' O3 a! [: Lsetup-plot3

2 z5 O! r% L8 o8 J1 b( z3 p7 g! j2 `end0 ]1 H% `3 n/ w. p- h
- E; q0 N6 j' o' u5 ^
;;run time procedures
% t# {, g7 g$ ]. ~+ P
. E+ y5 q. F2 q) cto go( w& G4 I+ ~( N6 Q/ p

  O+ j. v( `* H. Z4 f* `/ \ask turtles [do-business]

. |  C0 W. e+ i5 u& g1 _6 _. l# hend1 f+ N! D. C6 `" J9 I
5 ]4 k: a! M( a0 E
to do-business # O* D6 J" z; W; r% I9 n4 h
  Y: s) _: I+ l: G( Q" U9 _
. I) C# J1 E) P" G' ^0 }; i
rt random 360
1 J/ k& A$ h" K1 g" W5 V
& b0 D8 u3 j! [5 r5 r  U8 E  z2 {( B7 R
fd 1
9 u3 v$ v, h2 v" d8 \9 A4 x  E
! Z0 S$ _2 B+ g) b3 v
ifelse(other turtles-here != nobody)[

: T) Y: p; S, w/ [/ ~: z. C( \, F+ o$ |. h: U1 l
set customer one-of other turtles-here

: ]3 S3 `( Q# Y1 z& r8 z
. b( A0 b$ @' n! R; P) c. V4 V8 o, X;; set [customer] of customer myself
8 x1 w% J! r" t; U% W! F( N

7 l3 X; l, E! K, Yset [trade-record-one] of self item (([who] of customer) - 1): r/ \+ q& A% a- k8 K# t
[trade-record-all]of self. V: g) `8 K7 B' R  E4 _
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% h* e- Y% E$ h( j$ U6 T
$ j8 n8 L5 z  N, \
set [trade-record-one] of customer item (([who] of self) - 1)  s7 ^. W3 W5 r  X( \
[trade-record-all]of customer
* J1 {2 C3 l% m( w' g1 }
: f" B" }2 d9 M3 E3 g8 ~
set [trade-record-one-len] of self length [trade-record-one] of self

0 i. n0 E8 g1 O+ x# c
# m& }1 y" d( z3 u6 g, k2 aset trade-record-current( list (timer) (random money-upper-limit))
- ^. b9 W* e$ a+ B/ p2 H1 v  u

  S: H  S$ b% ]" n8 F* U. Uask self [do-trust]
. G1 B5 A3 S2 `* W4 a;;
先求ij的信任度
1 E/ E3 w* l% r4 x0 [6 P5 v! F' Y# L( l
if ([trust-ok] of self)
$ Y+ O: L1 |; T1 @& Y/ f;;
根据ij的信任度来决定是否与j进行交易[
1 J, H4 R$ X8 Y9 g1 H+ h. p7 Rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; z9 M/ F8 P, ]
9 O/ o( n: h( ~4 _[

6 C/ U2 N+ J. J- B  \( i( G% {
; P+ w2 V- h' a6 F- X+ ]6 Z- jdo-trade

+ L9 }4 Y, c( j
3 L0 T/ V0 b8 s9 q, ^8 w5 fupdate-credibility-ijl

, m, q) L$ G6 h6 r( q# Z% f. ~9 Y, |2 m, m
update-credibility-list! f: O# z: t/ b- N
4 K: v( S: C, s/ w# X( j

# [, w3 v: Y' a, N6 k, Lupdate-global-reputation-list
( g( ^, k. P: [. _1 n  X
* y2 u0 z. B; y: p7 j0 V
poll-class
/ `% F6 C% E* V6 f. p
' S/ L6 P" K5 l' [$ Z$ }* ?) X
get-color

" x7 S1 _" m9 W) A0 d5 w' C6 t/ s5 }# q  @+ P/ [. C4 t$ x4 E
]]4 V0 v: D+ e# Q: w! u3 M! C. \" K3 @

4 j! w! L1 e4 W8 `;;
如果所得的信任度满足条件,则进行交易' R% T, c: }  W* D, m' p) z+ W
: ^9 R5 ~$ n% n* P8 C
[
) ~2 n( K3 o; d

4 g6 Q, ^, _1 B9 ]' u& ?) Wrt random 360

/ m9 e+ F% f! ?7 }& d( o, M6 \6 i1 j. P1 S  g' ^% M
fd 1

! O* o- M( z3 \& ?* D; n5 ?( a' d% s7 ^7 a, V
]

4 O0 W6 M" S; B, _  }$ l6 \  d  P# {4 g1 s' B+ L0 J
end
. f! W' \2 B) h: }% D9 U: @/ Q  Y& [6 c

2 B, ^, L' n' t4 n  F# x; ito do-trust
2 V! N- p/ w. z" ?set trust-ok False
$ v8 U, E" v8 C7 s- m: l7 ?! V. S  }2 n5 b9 Z2 _& h
, u% B1 j9 p, U" I0 ~% ?7 _+ \# m) y0 }
let max-trade-times 03 {/ @$ U8 u) r/ B5 ^3 X/ j; J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ H- w* C( O) u3 |/ C
let max-trade-money 0& j9 b% B5 e) n/ }: n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; O8 N8 }3 K4 X. w1 l" f; l) dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& m5 [2 g( B3 f& V# V% a
5 q& U  s) w0 m. v% h( d7 e* a

! ?) L- m* f. W' Aget-global-proportion1 w" \8 w9 ]! @
let trust-value
" D2 P  G  f" N; S+ K& U0 ~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)

, h* [& M- L1 r& f$ Z# O, sif(trust-value > trade-trust-value)2 N- c  x0 B/ c! M+ O. J' d+ r
[set trust-ok true]
  |% V& x; X; _; Z3 D0 l9 lend
3 A/ E3 k5 K3 }# Y% N- f  F8 V& o% w  O' i# v3 u
to get-global-proportion0 A" |- l, f4 C- l/ i. N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 T% q/ N/ ]0 n1 e- N5 B
[set global-proportion 0]
. n0 ~" y; T2 p9 e6 V/ L! b1 G' i' I[let i 0( s# j% L6 U) L7 j. F
let sum-money 02 q# ~3 N/ u* b+ Y: H8 F
while[ i < people]* ~- k8 B# Y; @; s! n. O! S
[+ r) Q3 e# Y4 l0 e
if( length (item i
* S8 W  u9 I! S[trade-record-all] of customer) > 3 )
! K* W2 z. S( B5 b
[
, }* M: ?1 @" H0 J3 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 O& l4 D3 F2 \5 a* j3 O; k]. |$ q/ ~, |; s
]
  ]5 k+ O9 P" ~" klet j 0& I# T! L# J' o; {  `
let note 0+ V1 S6 p: A2 c$ o: \. E& z
while[ j < people]
, Q" u, N* J' p1 z: g! [[1 y1 u  G7 V7 l" F, i' l/ T+ K1 ]
if( length (item i7 V! d& W2 m! `( k! {- q
[trade-record-all] of customer) > 3 )
0 G6 {- n. s9 G# ?* ^& ~
[- L" Z# y$ J4 X  J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), @& W; T; J- t$ C9 G8 T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* Y! I" H( T* v/ p, R* U! a4 q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! A. ?4 w2 G. n- ^8 _2 |/ {; N
]- G) s3 R1 J: K4 @
]; o& b2 ?% }8 h+ ~' r/ B3 ]. S; Y
set global-proportion note5 p2 J4 B! `: ?# a
]5 J; y; j3 N* a- [- Z
end
. W- j+ q0 B4 ?( m3 s1 U5 Y7 u* R* v4 W: ]' N# q5 i+ D: O0 j
to do-trade! ?: j4 ?: a4 H. D+ K6 Z# ]
;;
这个过程实际上是给双方作出评价的过程
8 B+ E! M* u" |0 xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' W; x' P3 R, j% Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) O; a: G- H( u; l3 t
set trade-record-current lput(timer) trade-record-current
2 Z8 C5 W* v  l' `. z# }8 P, b7 N;;
评价时间1 N1 ]  y1 P1 N3 e' |
ask myself [
2 U0 C1 K  q9 o: Y) o6 z& p; Aupdate-local-reputation
/ m& f+ X1 [4 C: E7 ]7 w6 q, c$ Zset trade-record-current lput([local-reputation] of myself) trade-record-current$ L* ], j# i' a1 r
]- c- E0 Y+ @$ p& ~# E7 D
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 ^. i4 _$ M5 M$ o4 s6 e
;;
将此次交易的记录加入到trade-record-one
' O( p! [! ^% n4 k* b9 dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: q" p2 T+ T) \$ W: P1 w, w  k/ [8 elet note (item 2 trade-record-current )3 d, o) q; h, h+ q: F
set trade-record-current
! p4 n+ ]7 P+ a7 b: F% S9 y(replace-item 2 trade-record-current (item 3 trade-record-current))
. J. }* g; B+ X% r7 Q3 z9 R
set trade-record-current. G$ `. _/ o! {6 b: ?
(replace-item 3 trade-record-current note)$ @8 Y; a2 L0 ^: j

  r. r; }7 B% _3 V& K2 b$ J  Q$ V
5 A' F& F8 T: i9 V- E0 C
ask customer [
, o: M2 S3 {7 {9 ^# y8 fupdate-local-reputation( r' i0 [% f+ E# q0 d$ Z. a
set trade-record-current+ E$ `$ u* s& J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; C  ~5 N! L' u]* j9 R+ v. ?# _
% n3 J& t9 z5 {$ z$ z3 y2 O# }

( M1 W" I5 i. ~. v" bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! d% X; J3 d5 C

: `4 m; v' N5 x$ D% r8 Y( zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ ~! ^0 o5 t7 `/ M;;
将此次交易的记录加入到customertrade-record-all8 ^/ }" n' N4 [" b3 O+ s4 o6 d$ s
end
- u+ v3 p* {" u4 E6 E/ @& f6 l' M; U3 D! N3 y8 O
to update-local-reputation- ^* j& H/ S5 N6 g/ X' H9 W6 z* n- o
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ ?  j/ [" y9 y& ]$ q
6 c) v" W0 w' g4 N& J$ c! e+ _% `- [# W7 Y
;;if [trade-record-one-len] of myself > 3

% R* Y7 E' ]; L0 p5 zupdate-neighbor-total
# u8 i6 z1 N- I6 X% C9 {;;
更新邻居节点的数目,在此进行# _: r7 v: b- ?/ g5 o+ V
let i 3% A" }: f. l& N! R$ e* ^4 \# ~) g
let sum-time 02 H  z, d! G. b' T: |8 k
while[i < [trade-record-one-len] of myself]0 x1 R( H: g/ R% t* g+ O
[
! J# ]; J  r- M; x0 D9 tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! {# o+ U# M$ wset i
1 `) m. B9 `( z( i + 1)

( _) |+ h  X0 U]! y, e7 n8 B1 b4 i# q' B, J( q. W
let j 3
  b5 @5 R, y0 f" K3 Xlet sum-money 07 Y1 {4 \' {, M9 n
while[j < [trade-record-one-len] of myself]
9 I6 U( _! B6 t5 n7 p; r  J[' t9 d" g! O4 [
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)/ |& p5 }3 l8 n" X& H
set j4 o+ i0 A) z8 c) o
( j + 1)
# t1 {" [, i1 u4 z6 A* x. E0 U$ {% t
]
8 i8 O0 T3 Z$ I7 j, S* zlet k 3
+ @% _  w! g. e6 Mlet power 0
9 T- X5 S2 u- @7 {" k8 f3 Zlet local 0" C5 M6 n+ \8 K6 I! w$ ^$ c
while [k <[trade-record-one-len] of myself]0 Y  Q+ c" Q. G4 V, F
[' L- e! [0 d' F- K1 w& 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)
7 F& B" y$ c# V( mset k (k + 1)
# i, Z; r# B+ U  O8 z8 ^]8 s5 Z; {2 m( y0 ]
set [local-reputation] of myself (local)
2 A5 c7 o2 |( W/ @# tend# A6 a- }" P1 d

+ @! R/ B% s8 ~6 nto update-neighbor-total- ?8 r1 k: ?" W, k
5 V/ Z  l2 D/ w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: [  l, f, _3 h) a2 Y
8 W/ ^( B$ x: X  y* E( j
/ K) _8 X* \1 Z2 U% ^& j& m! {
end. \$ ]# @. S4 g' X! ]% X: P
- u& `* h8 C6 M0 o5 T8 |* V6 [
to update-credibility-ijl
: V: v: o* {/ v, `" z$ M: ]* v- h" ~, o" l0 X7 k4 \7 Q- J' R3 f) L' I
;;
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。
; H. V  V; n- ]0 y; Tlet l 0
" _1 L1 C& }  G+ l' Ywhile[ l < people ]
3 D, ?  ~$ w& _- |1 N% ^: q4 r) v;;
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
( {5 W5 i! c0 u* l/ S  V; W- ][
8 }- P. M1 X7 `- A! R# ]1 l# ?& W) mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% [8 P: m4 |- K! i, hif (trade-record-one-j-l-len > 3)( D* D" T" x+ R8 M/ ?: ]
[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
8 R& o* G  i( v& d* W$ glet i 3/ S9 b% ]$ J5 [) H# |5 t4 j. W  @3 q
let sum-time 0
  `" f& E) \. u- y: s; Kwhile[i < trade-record-one-len]; D0 i8 B% t4 u% I0 V
[+ E+ ~7 _. {6 m% z! s% |- B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 M5 E# L& A$ `4 e1 ^1 T7 L( [set i
+ O( Z( k; [6 I6 l) S7 n; a( i + 1)
; K# M. @: [4 O, S  x
]! q; n( u! ^" e& ]9 A+ G5 x
let credibility-i-j-l 0  P1 D0 M) \0 s- q; S! q7 U
;;i
评价(jjl的评价)$ r; B( [2 y  |% y, R
let j 3
+ U. m. ~; }% D* Q$ qlet k 4
* a( Y$ |. L* b+ m; ?4 s' ]while[j < trade-record-one-len]6 `9 j/ h* A/ v! S' @" p
[
& k+ s# P/ ~! D) m0 Y/ cwhile [((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
% B5 W9 e8 Y8 Y9 i3 K* N7 Vset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)  n4 q. t" i( c7 S: G7 f
set j# Y& O5 Z9 @/ K/ X! j
( j + 1)

# }  {' ]( N' E! _! n]
5 H1 B3 n  w( `  N' @) ~4 fset [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 ))
) o- v0 h0 ?. `3 u& F, _. R" H  f, t& a* J; V  q& |% v
+ N. p9 m- ~: f# Q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). ^- `6 ~6 \, P: z: g% R3 r- D' L
;;
及时更新il的评价质量的评价
6 x4 `( [$ x1 [1 }# @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' \+ D* h. Z2 d0 |4 s, F
set l (l + 1)2 C! t' M" k; ]5 {2 V
]$ V/ g- @1 m9 O
end
8 J- m& s6 j! K* Z* i$ R9 |6 \
! `) m, j% d8 I6 z. A5 k) f/ kto update-credibility-list
, {* V& A# _& E! @* _/ Tlet i 0
: W$ _% |3 O  L% @* P# u5 gwhile[i < people]: a- B( G- n! Q) g: r
[
3 S, T) j; ^5 \1 G3 i$ Flet j 09 {9 S( ?! o1 K9 N& h
let note 0, k4 }* X( X9 @4 z0 d
let k 0
" }+ {4 A% C7 @/ ];;
计作出过评价的邻居节点的数目
7 C1 W6 R1 H; Vwhile[j < people]7 R. y: T3 Y# X3 D+ {
[$ R: N0 n, n$ F& H1 G
if (item j( [credibility] of turtle (i + 1)) != -1)
4 p8 |7 I& V% W) c, Z' T& v: ~;;
判断是否给本turtle的评价质量做出过评价的节点
) l& }5 T7 `% E( U1 `+ R9 O[set note (note + item j ([credibility]of turtle (i + 1)))
( x$ w* n0 \  \& r;;*(exp (-(people - 2)))/(people - 2))]
2 R9 J; ]; d/ y
set k (k + 1)
3 t0 q) K/ n5 n% `; w, X]' Q) U! ?9 W* ]- ]* _
set j (j + 1)
" v1 c0 u2 o8 u4 i/ E]' c6 j5 a! ^0 F7 }( N
set note (note *(exp (- (1 / k)))/ k)! b& u2 {8 o: q, ^) |" W
set credibility-list (replace-item i credibility-list note)
% V$ O! s: C1 R0 d! N/ y4 ^) ?set i (i + 1)$ }; A3 a  ^3 N5 V* o9 N. o0 E
]
% `: b  Z2 Z3 z( ?* c7 d  Jend5 i( X' Y* ~( X& u7 r! r, [
- z; V; D* P+ j8 o
to update-global-reputation-list
& n  I! b; V2 F7 k* Dlet j 08 U  @+ B4 ^1 C9 v" L
while[j < people]# s- b3 X2 n: f1 z6 R
[
: Y3 ~9 d4 N; n( M+ vlet new 0
* `' f8 K0 z) g0 b5 a;;
暂存新的一个全局声誉
1 d& V) Q" u) o4 W$ Olet i 0$ y) K9 L: d: p- U" J/ N# _& u
let sum-money 02 c8 y# u9 g, ~- ]: L9 A3 l
let credibility-money 0
' x0 g7 e6 z: T3 K% g6 b- Awhile [i < people]
8 U: i4 c# C7 l: @( Q7 s" o( N[% Z9 \0 \1 T5 f6 w9 x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" X* F  ^. }8 U4 [
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); y& G0 p2 I. M$ {( {3 K" m0 ]
set i (i + 1)
, i6 T. Q# V6 }& r]
  C& Q5 R: O  `! l) Zlet k 0& h" M: k) A  n' S: ^6 E
let new1 0
( x1 O# f. o3 R0 ~/ o! C+ t: Awhile [k < people]
) u8 F7 L9 {# R# z2 x[$ M5 h2 i, A& K! Z8 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)! p) ^* r) o- t* G; o3 W
set k (k + 1)! X* _! n" `- e, p( V
]
  T: n) a4 Q# M2 Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! j4 m  ]' j: A; }set global-reputation-list (replace-item j global-reputation-list new)! k+ D1 s& w. z. E
set j (j + 1)+ y% ^8 P6 w3 V, C3 Z
]  I9 K4 s$ p6 z$ e0 {% Q3 [) m
end& `1 A% [- y2 ^3 `
/ x: `* [- x$ A; ~3 t  e7 n

- |8 ^" o1 m1 ?$ p$ _. y& {6 H7 L+ P. C% _/ X2 M  v
to get-color
; s& i4 C; T0 H$ `) g+ X7 m: W+ `8 B+ r; f/ g# [2 N9 U7 i
set color blue

' h! Y0 J$ H& {0 @% K2 p; oend) @! R/ l# N: V1 D+ K" q2 P8 i% |

; Q( |( ^% `: f# I" _+ N* oto poll-class% o9 k3 ?* `, I' e
end4 S5 Q4 w$ X7 P( K. C
, x! w& ^# {* ?
to setup-plot19 j- F! j. W! ?7 x4 c4 o" G9 L# x

6 k! o, v% W2 c5 |! o  o* aset-current-plot "Trends-of-Local-reputation"

0 X/ T* N" k3 _1 {; L9 v7 b/ B, K7 V. j: m+ a5 u% F8 U4 @7 e: G5 C
set-plot-x-range 0 xmax

2 _8 g' N+ e% ^6 h9 X2 I
2 o, i9 n2 @' }  nset-plot-y-range 0.0 ymax

, C3 y, `0 O+ w8 r8 @! M9 @" kend# N2 p/ T  c9 q2 v4 ?

% u' [7 A6 K2 r; `to setup-plot2) @" |) g/ G% j& D
5 N( }$ a3 w1 D9 {
set-current-plot "Trends-of-global-reputation"

  i! ]& }5 o, o! u; d
5 m$ f4 k% ?/ L% h% ~& ~set-plot-x-range 0 xmax
+ S5 B) Q9 N3 s7 h7 O7 c
( Q* ]; g2 L7 A7 F$ O
set-plot-y-range 0.0 ymax

# p! I" w3 g/ [: y: fend0 y4 G" {! M. E
4 Q3 z/ y& P6 N  U* [6 L3 ^/ ]
to setup-plot31 y$ j' K, m3 B' j0 i9 @: b9 j& N
% }$ }- ]$ t4 I# w* j
set-current-plot "Trends-of-credibility"

- X& [2 _# m' `+ d& R/ x
' ]8 V2 E% x# dset-plot-x-range 0 xmax

* W# c: I  v) {0 p! G. c7 U5 k0 e7 ~+ V) A
set-plot-y-range 0.0 ymax

6 A! t0 F& i' M% Y4 I0 R- R+ rend/ s: F% a6 d$ w& S  O
, F! q+ @8 @: V& m4 x; a5 \+ I" M
to do-plots: d  |5 A# i" d
set-current-plot "Trends-of-Local-reputation"
+ m6 n; q& e, }5 ~$ s& M% E' Q; Bset-current-plot-pen "Honest service"
6 Q* p* t# s. A+ v6 {) H) Y6 ~/ Eend& g* ?" e! e2 F0 E
7 r7 F: `& \2 I& B/ a$ b1 z7 S2 c
[ 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.$ h% ]6 R0 F3 M8 B) U, u6 ~
' c4 u! s6 r3 O" g0 M9 T. D  f
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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