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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:
% b/ q4 E- |- x1 {2 e% e  Pto do-business
; o' `4 z7 O# Z6 N3 J: `+ Y8 k rt random 360
: j( K) t! g8 m  o4 I* f$ m8 ` fd 1
4 a4 T9 |% _" ]: g" W) n" P ifelse(other turtles-here != nobody)[
5 H7 G" C( P( [! `# [   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.
6 ^2 I6 A4 D; l' w7 E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " N( d. ~% t; l# i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 e  y2 s- q# [0 C
   set [trade-record-one-len] of self length [trade-record-one] of self
" q; a0 E  j- o7 l2 j5 N   set trade-record-current( list (timer) (random money-upper-limit))/ F4 f2 N. b2 D4 c

$ I  w- U9 O) p* ]& j' Y  T问题的提示如下:
4 B0 P) f. g# M8 F
" ^+ v9 @8 H2 H1 m! ]# ?error while turtle 50 running OF in procedure DO-BUSINESS+ [3 Q9 ]0 m- x
  called by procedure GO- S, \/ |- [2 p& @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# T7 }, Z3 ^) S. L. r- ~3 u& Y
(halted running of go)) f) F. e7 T5 n" [' |( ^
2 C, W- U. E9 p- ?+ ]; T
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~~/ d) X8 T/ I* a
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
4 _5 @2 S/ u' a( {& Wglobals[
7 \# p# |$ x2 c  Mxmax
& O3 F+ Q7 D2 n8 nymax0 J( C0 w0 S( h/ D/ M
global-reputation-list
( F, H4 Z! A0 Y  d( M) E' n1 C  k7 ?5 H- A: u' d$ s
;;
每一个turtle的全局声誉都存在此LIST* C  K) T( |+ A! @, U( L
credibility-list" {, m' O/ {2 T' S8 q# c6 h1 x
;;
每一个turtle的评价可信度+ C; L+ B# T0 k4 V  g7 v
honest-service9 j0 d5 y7 W( F% M2 W. k+ p# B- U
unhonest-service
' V6 r5 m9 a" I& ~oscillation' F  Z( B4 X# Z  X! z
rand-dynamic
( a6 L. N& l: \]! d1 r$ e; T' b

8 j+ E$ v, Y5 Hturtles-own[2 a; Z0 z, _! _  U% L
trade-record-all
( Y9 {  W6 ]: Q; E2 J;;a list of lists,
trade-record-one组成1 e& P) B0 k" n# T, y
trade-record-one+ W) @6 N! M+ m; ^' H+ j
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* c. a& H' M' H7 T7 L
& c9 ^0 E! V) J& [3 H;;[
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 c$ Q6 d3 ^4 `* t
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]- i0 ~) p9 w5 P- r* R8 x4 K, R) m5 |
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" E! D0 P3 d6 O$ @5 V
neighbor-total
5 a# \* U( a) @' |9 s;;
记录该turtle的邻居节点的数目
, R: }" J- B6 }# M$ @7 M. @trade-time
) E6 G! q0 @6 V' X( A- b;;
当前发生交易的turtle的交易时间! i; t" Q# }! v) b- x6 G, `1 g7 j
appraise-give. A, [) [# E: f/ x4 i( [% h
;;
当前发生交易时给出的评价
7 a+ F+ D7 v* j6 e! ~, N+ wappraise-receive
3 o4 R, Z. `. |- F9 X4 I9 n;;
当前发生交易时收到的评价
% S& v* {- o% [- ?1 uappraise-time
8 G! [8 {- w: c/ V;;
当前发生交易时的评价时间6 R7 m( V# c3 o! V# j9 e1 V5 w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, h; G: O3 o5 p% n: etrade-times-total
! i2 F: e! b; h# d! Y;;
与当前turtle的交易总次数$ x# n$ K- b& t1 _8 f" F
trade-money-total
( g, D/ m9 S7 Z- g6 T8 D- f5 k;;
与当前turtle的交易总金额
  G- w1 q' a) j$ q6 ylocal-reputation2 M4 A, x# W; ^- c5 B" f$ D
global-reputation
9 r/ J* K' `% u9 v- D/ Q4 ]credibility
& k2 [( [, Y' ^2 O$ g;;
评价可信度,每次交易后都需要更新( v- |3 P4 {& ]# i5 g# S( Z# J
credibility-all
- ]* c& l9 @: d;;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
% t% Y5 ~& h* Z+ k/ g/ b+ o2 ?9 ^: S0 |% l1 B* r; Z; ^! n; \, S
;;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
8 f: A. e; a( i& ?! acredibility-one1 O( {! t, |& h
;;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
: u9 r  z! d! A2 q9 B+ Xglobal-proportion
, J% T7 y6 U( E* Ccustomer: [2 [! _; w, J3 O4 m) o( i; t( u
customer-no
9 K7 ^+ l# d$ o  M' Y. dtrust-ok
  z. I, k& ?- ~# k- _trade-record-one-len;;trade-record-one的长度
2 p$ t" X/ R3 t' j" Z5 Q]
7 Q9 {9 I; s! M0 {, k8 n9 k5 K& o2 f
;;setup procedure
+ b5 l6 R2 C/ k7 V7 E+ G% n4 ^3 R0 y$ t6 a
to setup: w# N) F2 `4 d- o8 m" W8 }" H& F
7 x5 x$ q' M) K* ^) ^5 f$ d" G6 i8 X6 Y
ca
# X8 b( r4 x* t* ]) h
8 f# \9 y& f2 C. Q
initialize-settings
. C0 ]  V1 c+ D4 O( v

" b, s5 |# D! ~4 n, p' ]' }crt people [setup-turtles]

4 ?7 R1 s* |2 a- {' F8 B0 I6 d9 i
9 `4 F, F' f4 t/ ^" r! R  Kreset-timer
$ H$ _8 z8 u; H; B6 A8 |* e

1 T2 y, {  s1 _) O- F5 ]poll-class

; p5 {) H2 ]9 s, v; _6 P- `: G3 u! E& X
setup-plots
1 f8 A4 \7 Y+ h7 C

1 a6 B- I- E, g+ Y6 C2 N, ^" Sdo-plots
8 Q: Z% ~; C( @/ h( V$ T; h
end( D6 ]2 Z# M5 l' P

! Z2 M' U6 D$ a4 N; m) _to initialize-settings& f8 ^: [$ n# u: Y$ P2 y* G
- ]% ^' H: d' y7 i6 B9 ~5 n
set global-reputation-list []
. Y8 m! Q" D* h0 q1 P7 z8 e

8 z" E6 p* l2 R  v: lset credibility-list n-values people [0.5]
! }# b/ p0 o8 q, `/ @

+ a- b1 D  n3 Z4 G+ I. Sset honest-service 0

+ n  P2 K6 V9 {- ~! O1 X
0 r7 l" R' i! m' i; kset unhonest-service 0

7 q/ q# D6 Z5 Q: [6 U9 G) d" c+ Q  g; ?( w" S9 K+ Q' q2 o
set oscillation 0

# k- N9 Q9 S6 b! N6 {- l* c$ C* L) D6 u* f2 I
set rand-dynamic 0

9 `+ Q  p. u" x  U0 W, O$ j3 @  Y' ^end
0 _8 W7 B1 Z$ I  [: h" O7 N' l# N7 @' B! ?9 F" i, U* O% T
to setup-turtles
8 @( d& B/ t0 Y3 o2 L/ |. i# Cset shape "person", w+ V9 w- U$ h8 E" B
setxy random-xcor random-ycor
7 W) P8 \4 [; ]3 f0 m+ x' fset trade-record-one []
7 H% m; W5 T8 q. `0 d# P& D$ L
6 z* k! O9 Z, l7 z: i. z! E
set trade-record-all n-values people [(list (? + 1) 0 0)]
- G/ W/ [9 i! Q

/ c1 P  p; V  ~5 b. Sset trade-record-current []
8 N: Q/ G+ O, c% N) Iset credibility-receive []! s0 C" \: x1 H2 D- l: e5 p; K
set local-reputation 0.5
4 M! k1 ]8 Q! D2 n! V- F/ Wset neighbor-total 0
+ k: y; ~: B. a- _* ]set trade-times-total 0
2 z/ ]# A5 d* y8 v1 l# lset trade-money-total 0% D# F+ {2 H: g3 O# n$ Y
set customer nobody3 Y; f  `$ \0 w
set credibility-all n-values people [creat-credibility]
/ X' z% O) g8 Q" ~- _3 T4 `set credibility n-values people [-1]
' d# _: o! x4 N7 {0 Tget-color2 n% [( S9 m7 H

, o3 i$ {6 c; z) g: Fend
  }$ s" g6 l0 q! c5 r, v% S- O  B# Z( T
to-report creat-credibility% x' M5 p% l7 N+ Q2 _; Q2 S) A
report n-values people [0.5]8 C1 S+ L" g9 \  i  ]4 D
end" |- r3 C& J+ k0 ~
6 R2 s& m+ ^" i. @
to setup-plots! [2 }3 ?; x. m( H  G- |' R

  O) S, H% P* p" A( Z/ Wset xmax 30

$ W* Y1 I4 d  p3 b
( P6 c* v+ B* Q# q3 k0 g& V1 G: `set ymax 1.0

, P& \: R3 q4 \1 g5 C
0 ^+ T+ n# `' F: e; f$ Cclear-all-plots

$ B1 v9 p- k- c1 f7 G+ O% s$ L" h) L8 e+ Z
setup-plot1
; P" Q- o, v/ b: v$ z" Y

; t4 j5 m* z0 M  w0 U8 O2 B: jsetup-plot2

. C, `) C4 J, ~/ _% U0 ?0 Q. ~' R( S* |" x
setup-plot3
5 {' [; U' `6 r( N
end
4 m8 s2 F( _) A' o* {* ~$ f! F% L( J4 D; T5 G& y  Z/ D3 B' Q
;;run time procedures
; m2 i1 Q+ q) i" l# c: E; U
, `: i. y3 k) {. }8 ~: R/ s  mto go
4 y7 [) n  ]4 ^+ i, {+ z* ^& k
4 `! |- ?2 T5 K+ jask turtles [do-business]
% ~# g. w8 i  {  ?8 M, \+ a
end
1 v+ ?& g% l: ?" c0 \
& z( U6 o' f" D; G1 M0 tto do-business * n( b9 s+ K* c0 E/ L

. }" R3 B; j* B! o
/ H5 b4 o" N( }, r% }: }0 srt random 360
$ c. m) B/ ^9 |( _6 h- x
6 S+ r/ B7 I5 h4 L- X7 M; Y% R
fd 1

+ T8 s' x- P+ }7 R- d) H* m# u. ^6 c9 \
ifelse(other turtles-here != nobody)[
3 o# v* w0 ?  Z/ d. u  m
% g) e8 A( M3 `! f, x( x* {
set customer one-of other turtles-here
6 q0 F; z* }4 @+ P9 u9 M7 e; Z+ T
- I7 e" G8 Q& y1 Y$ E- ?9 @3 y9 `
;; set [customer] of customer myself

6 Z; p! \' k+ m+ q; N6 k0 S9 v8 `2 `8 B
3 t/ \; a/ [. b) X7 W% C$ D3 X; O2 aset [trade-record-one] of self item (([who] of customer) - 1)! C0 {* I2 i& R+ B
[trade-record-all]of self4 G9 d. Q1 e; L
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 a# o$ M  ~8 ?7 [# r/ x5 q2 R( S+ y% z
set [trade-record-one] of customer item (([who] of self) - 1)% u. N1 y% \) A% N* R; M+ z# c, f
[trade-record-all]of customer

8 z$ S5 b5 |6 ~5 t; H' _
$ j0 w0 M+ i8 U: R# h9 j& Dset [trade-record-one-len] of self length [trade-record-one] of self
; q1 R: ?" b# m" y4 A9 \
. b4 j* l0 C7 F' ]+ }- N
set trade-record-current( list (timer) (random money-upper-limit))

. P" ^3 ^  b" u$ N; Q
7 o( I! m1 N3 A  D% Kask self [do-trust]. |6 L8 G# U# \2 h2 v2 d
;;
先求ij的信任度
- n/ j2 a4 ~( n& Q" c: n: a4 q# T; ~0 X. L9 O
if ([trust-ok] of self)  s; f! ]* R: K
;;
根据ij的信任度来决定是否与j进行交易[, c3 T9 H! ~$ M; d$ w4 A' @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! X* b# B; |* m' O0 ^6 y3 G$ Q: c9 m! s5 ^
[

. R# l8 X6 O" Q9 N6 O7 v' J1 D9 R+ }' \3 f
do-trade

" e6 m! W$ h4 O$ M9 s; I8 v  p* X% w0 @' t
update-credibility-ijl
6 i2 x3 ~3 N/ m( g6 y( I

5 S5 k8 J# @# {# ^4 eupdate-credibility-list
8 t( M1 B9 h$ ?) b; k6 j

' M  X+ X* k6 J/ N' U! H5 f) V, g  i4 A8 l: O
update-global-reputation-list

1 Q/ A  P" t9 M- ?& j; o8 `; l/ j1 h5 R+ w* k/ V) K
poll-class

+ \: o: F/ Z) b
/ F- q$ ]4 W0 G4 A" oget-color
6 \/ P$ M! U, I& j2 C
* w/ k5 {5 V6 T! ?. a
]]
, V! f& c5 H! K5 I
7 R" c- A, g. G5 v+ b;;
如果所得的信任度满足条件,则进行交易
% `! d# f! `; |' R* J9 f0 J2 d* P  `1 [: p) E6 T& y
[

* w& N/ P! j& [! k# f
+ y- p7 x8 `: m  P$ E  ~; }7 crt random 360

$ ~$ Z% x0 d2 I! R
% d7 z6 R3 b( Kfd 1
2 z& s9 K% {* r2 ^' }( a2 v" A

) u, ?/ q# J7 j# w& s]
8 H' }) Q- d  j& e* J
6 r: ?2 \* }8 F" d3 ^
end

5 P% W) J' G/ Q  ~4 t# v* @: ]
8 m/ s6 T! a8 Y4 J, x7 Eto do-trust
5 O3 G% O( K" T; p5 cset trust-ok False7 v1 N9 [7 n1 A5 P0 T  T- k2 g
/ E% {3 Z; W* N( S3 u
6 E0 B0 E6 e; `% _7 J" \3 W* }. {- F
let max-trade-times 0
. L' O2 O, r4 ~" _0 `; E# E' [foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 b0 N* d: K$ S( q/ h, W/ W+ i5 ~let max-trade-money 0
  n  r6 B2 S  e1 q( Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 M) H4 o8 S' G( i9 @* d4 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)); k$ y- T# v, F: \' P4 F% q
9 F) ?/ ]+ }* X

+ a6 |: W/ Q/ M! i# |" Vget-global-proportion, |, s* M; S1 l  i$ K, i# k; u
let trust-value9 A% H3 P1 h. x3 T% o
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)
: x' l! q: i" }$ x! q. m
if(trust-value > trade-trust-value)
1 ^: U9 \. I- T' y/ z/ {[set trust-ok true]5 P$ r9 G  W) o
end" r2 X* t  L* ^0 l4 q6 }

( n% Q, ?1 I. S6 ^* \% o+ Vto get-global-proportion
2 r. w% n8 _( |9 rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ q. ?; c) Q. l
[set global-proportion 0]1 A! |& n2 X' E( s, c* @
[let i 0  l! q- O" y, ^2 h
let sum-money 0
" a  H* }0 `+ }, {5 ?+ zwhile[ i < people]
- L' K, X4 s5 P( \) v[
4 q% z# Y3 J: q$ F6 J; [* B9 r) p1 yif( length (item i! e' y4 I$ X9 y' i( Z1 c9 k! ^9 k
[trade-record-all] of customer) > 3 )

  P0 f0 a" E: {% @/ M[
* c: B  o$ r. B6 L: V* Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 L# y4 _# }) c% L  b- J3 O]
1 \  }& v; i+ k1 `2 i" |2 T; G* F]
6 t" w1 w& R1 y. @8 Y$ qlet j 0% \, V* \, u* q9 L' S1 p4 I& X" R
let note 0
, `& p* O5 C' K7 J9 fwhile[ j < people]: ~) k8 q, _9 }. z# G4 W2 Z
[8 L# q1 w1 U( g. c
if( length (item i5 Y3 u, c. x5 H. M
[trade-record-all] of customer) > 3 )
* M( k6 i2 n; c! ?: Q
[
# D8 E. Y$ E% |' R, Wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# j- n. R6 e! a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 Q3 ^# X7 j7 T( H9 T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! D% z  Y/ ]8 G; i  A3 Z]
) m: M) _+ ~& l7 O3 X" O]- n8 g5 u* p* P1 e; _
set global-proportion note
( R- M% @7 _% t1 q]6 G/ j% r0 M' C7 C
end
9 u( @! W9 ~3 t* v: ?5 b4 l" `- Y( X9 O' x! [
to do-trade0 }' @# h+ p+ ?* }1 W( E9 s
;;
这个过程实际上是给双方作出评价的过程
5 L' n. C+ R8 t9 a1 Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" G: A" d! [1 O5 E5 S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' Z1 K( G$ q  s0 }' [set trade-record-current lput(timer) trade-record-current
9 e7 Z" @4 `! o4 i: d;;
评价时间
8 d- K" u1 l7 Jask myself [- s; {, }; t. b" [
update-local-reputation4 f5 O: U. B) ?3 H
set trade-record-current lput([local-reputation] of myself) trade-record-current
: l+ X5 f- r6 x. b' N0 @6 M; R]: ^& O# s! i  P8 w; T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  R; n5 H# L: j9 B& C
;;
将此次交易的记录加入到trade-record-one- |& A6 t; r: q! k6 U( m8 P. ^8 c" L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); h1 z, e- X* ~( [" z4 Z3 j: T
let note (item 2 trade-record-current )1 r" e2 e# l3 e4 `- R, j8 W5 ^
set trade-record-current1 r6 _3 ~( e2 c3 J" o* y4 e
(replace-item 2 trade-record-current (item 3 trade-record-current))
. D& H5 y' v# }8 ~2 P8 S
set trade-record-current9 P; q; |* i4 l2 e- I1 J4 w8 D* S
(replace-item 3 trade-record-current note)
& Z  q8 `- U5 [/ V/ K
+ k8 |  C* c0 a, q
2 t& I1 D) z( I( R9 a' S% D
ask customer [
! Q; n, C) w2 l+ W% W( tupdate-local-reputation5 A) a* w2 j" j' t- F) J" C
set trade-record-current4 ?7 w& |, P. W! _7 R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 s* W! G8 a& S
]
8 d4 S7 s; h! [: z
& r: I9 @* Y  I( d
; v4 u. s% t' n6 ]* @$ q, a( J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% D0 M; O! w* q, a7 H% k

& m( i0 x7 L4 P* j2 eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 q' X3 ]( e- g1 b
;;
将此次交易的记录加入到customertrade-record-all: v& `6 c# O6 k$ ^) I. p
end
+ X! f- \" S. i3 n0 ~" E4 v& k/ k- v# @( L( m, f
to update-local-reputation6 T% b$ [4 d; k  Z
set [trade-record-one-len] of myself length [trade-record-one] of myself
  o  Y; G; I  d: y8 b: o
+ r9 {/ z: t7 N4 H" l/ ^
2 {& S+ r9 {4 ~& x( u! ?5 w;;if [trade-record-one-len] of myself > 3

- O2 _3 ^- n, L* u0 ?update-neighbor-total
0 j5 q0 ~8 P4 a1 @8 H. Y- N4 U$ p;;
更新邻居节点的数目,在此进行
- X# W) N( T6 F# m" `6 i; ylet i 3
3 i( b+ P' c3 d! z6 C7 V8 b% Slet sum-time 06 R0 T* ~% R& R7 @1 _3 b
while[i < [trade-record-one-len] of myself]
" U0 J* S* x; _0 C[
6 w9 g4 j6 i, P; tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ E& @" m" |& o* [  C
set i
' X7 E5 c8 t7 E! Y/ N  k9 Y( i + 1)

) q; i  z$ X- Z) O7 S$ n]1 }# H+ W& E/ ]8 O2 v
let j 3
1 ]* F! C" o$ Y9 rlet sum-money 0
, d0 Q6 M' V; M% ]" e1 g9 Uwhile[j < [trade-record-one-len] of myself]
0 Z, B! h  W3 e$ I; R# w% x# n[
& r- _* V7 c( |" h. S- C8 `0 |, A. M9 rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- Z* \, @+ j8 X( Eset j
6 J7 g9 _1 h" a; Q. L( u+ W( j + 1)

/ g4 `  `8 r: k: }6 |. A. o; u]
) N7 @  S9 }) y7 q, c0 v$ P* t- flet k 3
9 H% |/ @$ M2 g8 j+ Nlet power 0# f& C) e" O) C- v0 y: Y
let local 0
) A3 X* \, N6 y* t% V- [while [k <[trade-record-one-len] of myself]1 z% i3 a1 n6 d+ Z0 F7 i
[
2 h: G8 Q3 H1 W4 o  x+ a  f0 wset 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) : L" [4 |" e. r* q) A
set k (k + 1)
" [, G$ Z: K8 r1 Z; O2 H; h]9 q% C0 Y/ ]1 o# E8 V0 H
set [local-reputation] of myself (local)$ p- p/ f) ^6 m+ x- p# I% e
end
6 |3 A# S+ j* F' F  C* ]6 [2 H8 W2 L2 x  O0 s# C
to update-neighbor-total( A. q8 u5 D; p. b! T! I, l  O

' `0 j" q4 E+ x5 r0 e$ W( iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) G- ~$ o* K" z8 c( z
7 I4 T7 x! `9 l( S: T+ Q, D7 o) [

- c% d& |' Y7 ^' R  F2 J0 jend
6 d  a: Q" B* G/ u* V( z+ {- c1 R
2 [* g: }4 |  T( [5 K: Wto update-credibility-ijl
& }0 Y1 E+ M. i! M4 e. I1 e
8 j" s0 r8 e5 _- N& U;;
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。/ H1 e1 j* a# N  e- t
let l 0
! g# x) X4 g& @' j3 Dwhile[ l < people ]
# K5 H% {. _% O6 X# u4 P7 O* [1 Q1 j+ X$ Z;;
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
$ _: j2 m- C1 p( X/ \9 |+ E[  G4 `0 W& H& x' H; E: {) K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" d. Q6 y6 K+ o0 h" Y* T2 u
if (trade-record-one-j-l-len > 3)6 E% B  k2 W2 ]" 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
- A$ \0 s' x3 G9 ?% T: clet i 38 S* G/ M+ Y: x2 e
let sum-time 0* V  [% _1 m& M" ]
while[i < trade-record-one-len]# S5 N+ R7 r( y4 O9 R4 I
[2 f- C3 \( E( K% |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! U! K5 ~! H5 Y# p; c: C$ I: Yset i
6 \  T/ Z# J3 k0 [: i: N6 {; Z. \, q( i + 1)

/ j0 ]+ O% N/ Q6 |]
4 v2 X& K6 P' k3 U$ R8 B3 Ilet credibility-i-j-l 00 A  k7 E. ~  I6 i
;;i
评价(jjl的评价): ]2 T2 d! w! \. y% j5 \& R* D
let j 3
2 z# X( u+ b7 L6 _3 p3 `7 dlet k 46 K) J$ O" w' Q: [" E
while[j < trade-record-one-len]
/ l' S6 q- K- @! W[
) A6 F6 o$ g4 |+ ?& t5 Wwhile [((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, X! q$ G& W  B  T0 k8 z
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)
- k7 R- L) E$ o  H) ~0 Vset j- U' b& V7 R- O4 l8 ]  h
( j + 1)
, t: l  T0 F5 F/ \
]
3 J# h1 r2 q( n8 cset [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 ))" E3 ~/ V5 G+ r: T
6 S' a* }5 w  [
, J  Q; g: t+ ~! K% C5 `9 h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 p: J  U: c7 _# G;;
及时更新il的评价质量的评价# v+ m2 F( }" d1 e3 v: F/ m' o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# Q+ _- c8 o6 f( K) wset l (l + 1)
* ]' S! N. B4 [/ r], v+ L; s0 _( \+ r0 K2 Z5 u- b
end3 h" J. V) t2 A+ ^8 z0 L; Q* I: c

, Y0 @7 i3 n6 @0 O, N* F; i' Lto update-credibility-list/ o3 n+ J6 m$ H& o4 E
let i 0+ G( H6 u* n% E4 }- Z9 m
while[i < people]
" R$ A- ]) i- X: S2 ]* [8 E2 G[: B4 \- A+ m2 L0 m$ Q
let j 0
  V  g" E0 _. ]' `/ V& l8 dlet note 0
* x; k1 E0 Q. v/ }let k 06 x8 V( b8 Z: Y% K( _2 T, k: R
;;
计作出过评价的邻居节点的数目
! a% Z( O* f2 b# i' }0 n: |! E3 z7 {while[j < people]3 l- F" x1 e4 _# S, X, {
[
# d* r& \0 d7 P2 Z$ L) @if (item j( [credibility] of turtle (i + 1)) != -1)
, W; y6 G4 W( _;;
判断是否给本turtle的评价质量做出过评价的节点2 S8 E: u) T/ Z9 c" M: \8 V
[set note (note + item j ([credibility]of turtle (i + 1)))
9 G$ U" F" B: w  ~' L8 y;;*(exp (-(people - 2)))/(people - 2))]
; a' B+ @  @7 B2 b! |
set k (k + 1)
% H2 @2 N8 E1 L2 G$ g) }( A' n]# D9 E, l6 \& l& i; A
set j (j + 1)
3 @* m9 h; i! u! L]
6 |5 F: O7 O4 k, i4 ]set note (note *(exp (- (1 / k)))/ k)
7 G- E1 G$ ^2 M# z- \set credibility-list (replace-item i credibility-list note)' t6 E, i& M# E9 }& G; Y6 D  @8 _
set i (i + 1)
8 {. P+ [8 J8 C  B- c$ k8 ]]4 i% f8 Q3 o4 Z; c
end
3 H# Z" i  Q0 z  k9 a0 ?" j* o" h; d
to update-global-reputation-list4 C8 d9 N2 |! S* l
let j 0
% B( V. S7 g& [8 u; x3 M: Z3 i0 R5 \5 qwhile[j < people]
, f5 G, v% D9 Y6 G% X[' K, l4 L+ ]2 q2 e; |; N
let new 0
' R1 v. v/ t6 ^. j7 m& j( `;;
暂存新的一个全局声誉$ k0 q8 u+ ^$ H. U. E
let i 0
( ~4 W; n  \! Q% W3 a' l& R8 ?let sum-money 05 q4 @3 A, Z+ l2 B+ d) ^( T
let credibility-money 0  P& V/ _5 W& k7 d* a: z
while [i < people]0 w2 V3 c* z% J6 X6 S2 n8 N
[% ?9 _6 t' A# E) Y1 y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), ]2 M2 T3 R8 y# k' i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 M% n6 w7 Z' q; G6 G
set i (i + 1)6 `% B3 I2 j$ e
]9 Z# o: C& n3 P1 B* ]9 q
let k 0' F' `& R, i4 |9 q; q9 o) Y
let new1 0
/ N& s4 x* r0 M& D8 }0 @while [k < people]
. g1 V5 Y+ Q( ?* p. H* ?" C1 L, l9 A[* {' Q3 h; r2 M0 L, _+ A: h0 i0 B
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)
% S' V! `) t2 S$ G9 aset k (k + 1)* \! N; u. w3 r  `
]9 T! J5 ^  q+ d0 ^2 w* x/ A2 L- s8 d/ k
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 p9 q3 q6 o# s5 V/ `' T' G
set global-reputation-list (replace-item j global-reputation-list new)
( w) h; w! y6 s  t; J( p6 J2 Cset j (j + 1)
; y- {1 @; Q; y0 ^3 F, e6 x( O$ B4 P]5 U( Q4 ?6 d: r1 S0 U; w
end
+ A) R# f& \4 {% @+ @( z: ?) u

/ S" T; K  ^% a0 J3 D3 C+ x8 _9 I' w1 o: k
to get-color
' z; N' A& s! C8 W$ `. R4 g# P0 W8 B; `. z
set color blue
6 {( x1 _) z  x
end
. G0 m7 X! p* z3 J/ @
% S% |9 v1 l& Y* W/ uto poll-class
2 V) z5 F6 Z/ U: L- c: N% E# {( Zend2 k' `& }  F) b# d
  G5 p9 ^! X/ e7 s) ]' T1 U
to setup-plot1
. [1 b( z: L' s& e! W0 P8 y. W8 T
, B" ]5 H6 }% y5 o* t' f: K7 _set-current-plot "Trends-of-Local-reputation"
& G  C2 G: {; v; a6 \
; K+ W" r9 i- Y/ m
set-plot-x-range 0 xmax
2 y  l$ D; P- {5 C, J( A3 q
8 I; g# b% e! p+ D
set-plot-y-range 0.0 ymax
; Z* L, ^. j1 x1 `! A( m- I) @/ V( X
end3 Z; B$ j2 ~' a' [
7 X7 @  _1 N6 o& e1 n# m
to setup-plot2
. _0 S# H5 G: E* t4 }8 E( S( h2 f7 J5 z
set-current-plot "Trends-of-global-reputation"
) [8 W6 h4 f2 k. \3 t( L; m  U
$ H$ j4 o3 w+ X% {1 X
set-plot-x-range 0 xmax

+ s0 V4 A$ K" c* E6 N, U4 \( E% E+ X& V! w; h( v
set-plot-y-range 0.0 ymax
$ k: j. c" _6 P$ r
end
  v' P& s$ q% f) ?0 }% H
& R- D2 k( A; m# Wto setup-plot3' q! l" l' X7 h: F+ i: C: c+ z

( C9 e. [: [, l: A6 c3 sset-current-plot "Trends-of-credibility"

- c6 ?! U6 A6 O% V6 B2 o/ C- |( L2 ^# V4 g- H$ v7 Y- n& z
set-plot-x-range 0 xmax
# |" L' N& j5 U3 m

0 d2 d4 W3 f) b, y- Kset-plot-y-range 0.0 ymax

4 ]- T& M: s% X/ h1 z, bend+ W9 K+ f' \; _. G
3 V- @6 e1 ~' c9 T) S* |
to do-plots3 b" B2 g$ Y5 O
set-current-plot "Trends-of-Local-reputation"; N% A6 G" E( m% X+ U, H0 G8 N1 V" S
set-current-plot-pen "Honest service"$ _( U. {  C7 i' P* J) q
end
! g9 f% n" Y! E, X" Z8 g- K! e
/ J; l+ Q3 x) p# R, y[ 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.: `( [0 ~' `! @( K
6 ^8 b  N# e6 D% Q( S
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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