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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:6 f7 c( Z; k+ j1 r
to do-business
% m7 Z' i# r' B* Y4 W$ }/ E2 R* T rt random 3606 @" u4 z3 m1 p5 e: E% |/ N
fd 1
, r3 D( U, C8 l7 b ifelse(other turtles-here != nobody)[% J: z3 n' A; I# D' i+ a1 m
   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.  f2 T( p4 H( ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) W6 |; e- u$ w/ X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 T5 g, e5 k( n! _. N9 A
   set [trade-record-one-len] of self length [trade-record-one] of self- ~* N1 t  G, @$ h- H8 ^3 R" ]
   set trade-record-current( list (timer) (random money-upper-limit))/ U  q4 `# c6 G7 f9 w7 o$ {/ m

; n# s% I5 a2 B% B问题的提示如下:9 d4 G0 e' }+ K/ |; A0 c8 Z
0 \- K7 T/ |' m) J1 _2 x' x3 W, }& Q
error while turtle 50 running OF in procedure DO-BUSINESS& T% }- L) k$ c! P0 s
  called by procedure GO
6 F8 q) P( X9 o) F4 E. g$ l" \OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 e0 x6 L/ o* J1 H8 z
(halted running of go)
+ f8 }+ K1 {8 k' I2 A9 ~1 C% z" K/ z% x. t, u- J' v8 z
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~~
8 w, s. C4 N$ S* s. V6 Z2 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
% U. m+ ]' f8 e: d% `, gglobals[( O/ H$ q9 U5 W3 b, \% }, G
xmax
+ G! e3 X, _2 S7 L' s: Tymax  r# {4 x1 b+ p1 X3 t( o5 d: p0 ^
global-reputation-list/ w5 J* O6 W9 j9 S
  I) _* v3 K: o, T- s# z. {- p
;;
每一个turtle的全局声誉都存在此LIST
  J3 T& C/ ]9 P. T# h9 z5 n. gcredibility-list
. V2 Y2 M1 }5 v2 H5 x;;
每一个turtle的评价可信度
! B6 P4 L* B% o$ v% ^4 D, [' [honest-service( i  n# p, }8 Y! \
unhonest-service
$ A' \; \& e" g& m* M4 C& Loscillation+ D( `! I& u$ ]" A4 i4 s% q; P
rand-dynamic
2 w$ z1 a- x8 A. o) P]  Y, A- _( r4 C; b/ m

/ y: _, Q( i/ p% D# wturtles-own[
9 W& w( M  l7 `  p/ otrade-record-all) B* @# h  g% A, e
;;a list of lists,
trade-record-one组成7 U, f5 Z" R# r) |% u# t
trade-record-one
- d# U9 p# {" F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ r! Z, w* q& [: a* b
, ]# l; ^( N% K- M% N3 ?& r1 A
;;[
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]], S) y( y& J8 G/ G
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]
  R8 J6 Q$ j5 W- h5 B. P& fcredibility-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
+ Q% G. B% J5 Y3 A! [& Jneighbor-total8 G  u2 ~, H' r; }
;;
记录该turtle的邻居节点的数目
* ]. \6 P. u; Dtrade-time
7 Y6 r7 e5 b$ T- X  _! Z! S0 r;;
当前发生交易的turtle的交易时间
/ T- E- [: E/ M, \) s; gappraise-give4 b$ s1 J' T/ [# r. i- E
;;
当前发生交易时给出的评价
5 f) r6 t3 S0 j, h) p5 l  [( G+ pappraise-receive+ B- k7 m. b4 M. l$ K
;;
当前发生交易时收到的评价
9 B% w1 }$ z, a# v, ~4 i% Rappraise-time: W- X4 O# T$ I3 X8 C7 ^( s
;;
当前发生交易时的评价时间
+ [& H; t$ V: j/ hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 m# {, t4 ]7 t0 R
trade-times-total9 o" |3 z) Q7 d+ g; d
;;
与当前turtle的交易总次数
5 |3 l* @! _; r+ |trade-money-total
- O4 y+ h0 _! }  D6 c  k;;
与当前turtle的交易总金额: b7 w5 T0 Z! T* G, j
local-reputation
1 {& Y  D# n! A% Z8 |6 qglobal-reputation/ ?+ a2 d. F; Y, {% D0 v
credibility1 F' m6 Y8 }; }3 [2 u8 R' x
;;
评价可信度,每次交易后都需要更新$ N3 R2 k- ^( b9 {$ C, J+ `
credibility-all
2 P8 n4 l. m2 z1 S- u2 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# B9 A: c3 J# {) S5 X9 G" v# k
, M5 b+ n  q+ V( C1 O$ b
;;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, e6 n1 K- i8 y( n7 f
credibility-one
1 P7 t; t8 u6 _+ r' z5 Q;;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
1 `: Y: T1 \$ Y8 K- y  v1 {2 Tglobal-proportion# h* R2 n; X5 V" \" g) K
customer
4 ?2 E  r4 t7 O9 S3 {customer-no
8 k  Q/ h+ }6 o1 H2 r, ~trust-ok
9 @. J& T1 W9 a& Ctrade-record-one-len;;trade-record-one的长度
- G; H: N7 M) @]
5 l% [; Y! C/ ^- z* ?5 C/ Q3 `  u5 D0 W, ^- `9 j6 g# {. U
;;setup procedure
, h4 f. Y1 b6 o3 u1 ~# ^0 {, p' F/ I2 E& i; S/ Q
to setup. H% o+ ?$ u7 c  q# K+ B
2 B$ h2 y: w' Q3 c9 V) {
ca
' {% E) v0 }& H6 O! l6 [! B: r

0 m/ a) d, ]0 d" e- f4 p/ I" Ainitialize-settings
- n" Q1 o3 c$ `1 _! n

/ F+ p. B% {: @* Bcrt people [setup-turtles]

# x  p5 J4 p: u" ~7 G
2 _( b0 N) ]) @" rreset-timer

' `5 G2 k5 u  t* j# Y8 k4 r3 X* G3 E  h% X+ P& h3 X+ i
poll-class
2 y% O8 j( k1 p! X# I2 h- M& W

( v3 _9 v9 Z0 Zsetup-plots

! A( p! O2 [8 u9 ~
2 n$ c( Q! H  k# L, Y: Zdo-plots

$ P2 d2 o+ |  r1 @/ Dend, Z% S. J. d5 J
; O1 t% `% f' f
to initialize-settings$ Y+ R2 t3 }  g1 Y/ V" K: o
4 W# D1 u5 I6 W: O; i: r+ b# e
set global-reputation-list []
9 h+ l; H5 x2 b
0 H! I' F; J  L7 @% d& H/ t$ d4 u# {
set credibility-list n-values people [0.5]

6 x1 ^* M! K* h5 _/ y" p
: Q4 k# V! Q. F4 r' Z0 k4 `1 |set honest-service 0
& b/ R2 u7 r3 `

7 ]% g9 }$ M- s2 N) Nset unhonest-service 0
2 o0 }& [6 O" V

* t% A. v. d% U7 F' rset oscillation 0
: h7 Z- D# `7 N4 ?
# c& k" x+ F4 `( r" v& ?6 F
set rand-dynamic 0

9 x/ w' l$ z) }2 I/ y4 Wend
# f8 Y0 S! v# K$ \4 ?
- h" m0 A; {8 e9 ito setup-turtles # O3 z2 l: D  w3 Y0 z! U% F5 s
set shape "person": e- Q. Q  a% K" b7 O! w# P
setxy random-xcor random-ycor
3 \% w" i: |6 {+ d8 s7 {6 e3 q: c* Aset trade-record-one []. y8 Z* d0 ^5 w+ U9 b3 [
, L6 r7 D4 f5 M; L
set trade-record-all n-values people [(list (? + 1) 0 0)] # L2 B4 I: n) T" l

$ r: Y# Q+ i; J: \. rset trade-record-current []
( }/ l1 T; j; D- U% xset credibility-receive []
! w7 }9 G; K( R0 _: D+ F' Aset local-reputation 0.50 p0 Q  h) ]$ l2 x' j
set neighbor-total 00 T# e7 U* \) d. [8 O" A/ T2 g
set trade-times-total 0' y0 b1 O# e: A! s. s3 l. z4 g
set trade-money-total 0
/ f* i- F$ ~  Gset customer nobody; {* ~* f7 m/ X) {7 X5 w
set credibility-all n-values people [creat-credibility]
# S' n1 d. k+ Q( L# Nset credibility n-values people [-1]
7 i* z2 B% `" J- ^0 q) A) dget-color. z: l3 I# ^- m
" g0 d% _$ U- H$ L  V
end
; y0 f# V" n, r+ A& [/ T1 M( |0 d7 q& t& |8 Q) B4 e6 ~/ `
to-report creat-credibility% U, a# p; d9 S7 ~: j
report n-values people [0.5]" {& y& w4 e& g# h9 ^
end
9 e. K( P' U' g8 u  L; I2 K7 j
! ^; @8 I' G# A' G- ato setup-plots
3 Y! ~+ M/ Y% }0 U0 {- ~2 \' O# D$ r# q. k
set xmax 30
; `5 f: V, X5 Q' k% q6 d/ r% g. O- D
8 y  c, ^3 Y9 l% [$ X% c* E4 \7 X9 @
set ymax 1.0

) b* R5 I* K; ~$ E) x  B5 s
( l$ S* f2 q: {( f* I, z, Zclear-all-plots

4 P. a( f  I5 p' y- [4 Q8 @5 Q# A7 W! n1 ~$ C+ u* L
setup-plot1

! Z% ~! H4 |  ?7 N  @
% n! v6 z' y2 R1 _setup-plot2
* n  M: m/ P  s5 Q1 k3 w- _

# q4 X; x% {) V1 y4 Msetup-plot3

$ A& V( H2 ?/ `' [# Dend
0 @% Z% w- H# U, ?( F- T/ w3 |% D9 ]  I& u3 `& ~! O
;;run time procedures& j/ i) w$ `( {- C" H

) h5 g* d( u/ I* b3 Cto go7 G( E" ^3 r. i( h

8 `3 O* t! x/ r& `7 l& _ask turtles [do-business]

# m5 L+ Z8 @- X5 b+ ~end6 b3 i( y( A" ]0 J# l$ i
, P& g" a: l# }1 {9 D" [6 f
to do-business 4 d. W5 p7 [/ E8 m
! }) Y8 n3 G# m6 z6 C! ?

9 h3 w1 w, Z8 Z* _; krt random 360

# I. ]# X/ ]  ~, U6 U: o
, t3 ~* w" x3 }fd 1

5 N; V% m- v+ u* r9 M7 c0 \. r$ a$ r1 n
) ]* t/ Q+ r# pifelse(other turtles-here != nobody)[
3 N- O. T4 @3 x3 u& t3 J( f" F; k

' F- D% z  Z: ^  c9 ~set customer one-of other turtles-here
; y$ L! ^7 J# a  B
' u0 Y: z9 m9 P$ d, w
;; set [customer] of customer myself
+ R8 |! ^9 {5 D9 u: p$ \! e" o

" H3 E# }! d2 m1 X  S/ x+ u  rset [trade-record-one] of self item (([who] of customer) - 1)
- s+ _7 ?/ m( t6 H# D1 v5 @[trade-record-all]of self9 \3 H6 f8 c6 Y& l+ Q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 v& W# b# A- H# _
: h; ]  B- x  H. b% |2 U8 b
set [trade-record-one] of customer item (([who] of self) - 1)
8 I9 v+ |6 R  r[trade-record-all]of customer

0 Z% y' r% f  \+ s3 K1 C/ `- a% N  o, M/ S' ~7 `/ {
set [trade-record-one-len] of self length [trade-record-one] of self
! S3 k1 m6 F6 H

3 f4 V9 [. q  u$ `. w0 i' W- {) Yset trade-record-current( list (timer) (random money-upper-limit))
: w% @6 H& z: ?/ Q. q, J2 j
6 ~! {& w, r* ?; ]
ask self [do-trust]
1 y- |0 `. `. F/ e/ c7 K& f5 h;;
先求ij的信任度* \" t9 ^* N) A2 q6 l

; o3 U6 X, A! J' g7 m8 @% \; }if ([trust-ok] of self)# B+ E8 q6 l8 {9 M0 c8 U, x
;;
根据ij的信任度来决定是否与j进行交易[
3 `5 R+ e  V7 v2 U% w& L, Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& O8 {# g) p. R! e

9 l1 n1 b, e6 G. M! H& x[

0 i+ W7 _# w6 ~3 G/ N6 x, b
& j0 M: H- Q! g: F5 Q" r, h+ qdo-trade
/ W1 y" g+ N5 c

$ M" J) X" w. Tupdate-credibility-ijl
0 B% l$ X/ M0 E

0 z& t% ]; N; T1 `" y" `- Vupdate-credibility-list% X, y* a+ [6 B, D+ `# d9 u
0 w! B) l/ w6 b; u
6 l' l+ R, }* F8 ~0 E+ ]1 i& ?' v
update-global-reputation-list
8 ]8 T* @$ n+ ?
5 S+ K; f( S- M3 g
poll-class

0 _5 [" g: E" G* |2 R( Z, z. n' _
# ^9 k* r. m& b* @get-color

: T, E# R. S* V2 H1 H  @2 E6 U, `$ R3 k8 w* b) @+ R+ `5 k
]]; ?3 C3 I! I* K! g+ u

0 E0 [- x4 U* G;;
如果所得的信任度满足条件,则进行交易- R$ K- p. G- U1 y# _

3 V% m' ?- F4 P" b0 P& Y3 k6 |[
9 }( }0 t( z3 H

9 L5 g% A7 D- A( P8 W) B- @7 b' Zrt random 360

2 d1 N" d9 S0 W# U6 k
$ n) P2 u4 p1 Hfd 1
4 W6 \( P( C7 B- i9 B3 v3 z
0 W# A2 J  e) o2 z; D0 @
]

* F' q. x$ k& r2 b# ^
) J# }! X0 N( Yend
4 r% Q  K& g8 X# A. d* I

, O8 l: Q$ e: y  b. x+ [2 Eto do-trust
5 b" c! ^2 J& b6 b& c6 G5 R! Iset trust-ok False
! F  T! O  E' H; N6 c( @4 T: Z' m% u% i  Q4 `" |( `
; D3 C% m! H: [8 z: G, y8 S& R0 L6 K
let max-trade-times 0' a5 ?7 R" A5 m. c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ ]; x: ^; f+ y6 s% |
let max-trade-money 04 ?9 q7 s/ o0 |8 o, r
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 V! s- f% j' b1 O& k6 b. d  b  ?
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ m& v* [# o1 b, u& T2 G
, J/ Y* Y! u4 a  I; k

' E6 v3 d1 ?1 |) Y0 F6 Gget-global-proportion
# b3 e0 }) i+ K8 [let trust-value  p' f& z, L" N1 ]- H
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)
( P* n9 d$ s- O( q  W4 @6 e0 x/ D
if(trust-value > trade-trust-value)
; t' Z* E, A' t7 E- t4 B5 m[set trust-ok true]7 J, k% ~" l/ |# E( Y7 l( ]. [
end3 Z7 G( D5 Q, W# d
& [$ z$ o3 z2 l5 _# V7 C. C
to get-global-proportion! k- [  e$ M  y( l% ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ ?6 x( i( g5 n[set global-proportion 0]
  g8 b- K* [* d+ E4 e0 N1 C( G[let i 0
8 C. w5 U3 F% w1 ]! p, e0 J0 tlet sum-money 0
( ?0 N! {& G/ P4 h- [. Z! h9 pwhile[ i < people]7 H  N2 H0 y4 A5 h# K
[
% T# g& Y7 F& W2 Iif( length (item i. c2 R6 ~5 c4 z8 o0 ~
[trade-record-all] of customer) > 3 )

7 T( Z0 L  ?* [$ |" H4 m$ [3 ~[
. i) L' b" l5 j3 n3 Q+ ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 e: j5 v+ n! K% u  K. ~. f
]
9 f* x# Y2 \& G9 a6 z+ D]
' f* k( p, |6 D& A, k% Blet j 0) ^' Y" B9 w* V) n1 W6 o
let note 0- e# V/ W" d( }0 o
while[ j < people]6 y7 v- {  ^! u/ F0 u; |
[  A& L4 c- B3 |
if( length (item i8 U7 J# b5 m6 T8 ]3 _
[trade-record-all] of customer) > 3 )

3 e; e# ~$ I6 _7 W  V5 Q( p% I[
4 }- _/ [: W: l5 j. X' ?7 {ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& v3 w0 F$ f" b7 h0 w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 x) S4 x2 ~* v" [4 s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 Y! G9 U% U# v4 n2 |
]
2 n+ M3 k4 J/ ?# u+ _. s]( v) E; k2 G; A' e* @% U1 n
set global-proportion note
4 y. X$ }* u# J) A/ y2 T+ \]! a, @. f$ t& l
end4 y  Y. [: t/ ~% N2 l3 h
. @, Y1 ^+ b' J) ^2 A
to do-trade
3 b! ?  Z& b1 d# p/ [6 F;;
这个过程实际上是给双方作出评价的过程: S- @' Q+ G9 n2 g3 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 x+ n& v2 Q/ v5 ]0 A4 H8 wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 H7 _0 W' ]# r, e/ A$ Iset trade-record-current lput(timer) trade-record-current
, r0 J9 m5 O' ?2 `! F0 V: S' S;;
评价时间
& B" L% G- s: j/ Task myself [
! T8 V" `3 c" Fupdate-local-reputation! z0 c. ^* |6 [/ R+ G8 x% \' N
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 ]: q+ J, K4 _! F3 s1 @" _1 P]& }* b, y" S0 v- ~( s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) B! P  K% m$ _9 @. s;;
将此次交易的记录加入到trade-record-one
% Q" ~- l. x1 d. Lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 h& f& y+ A7 ~4 P) Q/ P$ z
let note (item 2 trade-record-current )
5 D# M* \. ?' rset trade-record-current* Q: V6 i$ V% p: y
(replace-item 2 trade-record-current (item 3 trade-record-current))

- I; [9 K9 c. V  Fset trade-record-current* Y1 Q7 f; m. \5 Q2 b9 C2 v( O
(replace-item 3 trade-record-current note)6 V, f& d4 f# z3 g6 s, p0 M
4 V. X5 S1 @& O4 m

' j. F/ T6 K# R; J/ h8 Dask customer [. s0 E7 f: A2 ^& ]$ L8 A
update-local-reputation# t( P9 f  k7 |9 o3 g
set trade-record-current
* R( t! |- |" v+ |9 q# a(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ f9 J' t; K7 k
]6 \8 `/ o( X6 w5 y3 d" g1 n1 C
8 W, o! P" s( S
7 H! o; R& l6 w* q4 Q! B1 |5 z# p  J) `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ D& Q8 D. \( _! D" E6 s9 E

: l- S6 h! X1 l& t: Oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# _' @9 x( K2 J3 A- ~;;
将此次交易的记录加入到customertrade-record-all% ~. m! f: ~1 j" I! T
end% W% F' T+ ]( l: s" ^

3 \% M% C, O7 Y% v% R5 \. Uto update-local-reputation
# h+ _- c0 S( C* m! Vset [trade-record-one-len] of myself length [trade-record-one] of myself* L7 e! c. f$ |# Z1 }8 p
" p5 g2 e! L% {5 m

& E' Q+ N8 s3 S$ m0 z; Z8 @  j;;if [trade-record-one-len] of myself > 3
% B  q' `* C3 ^+ w& q
update-neighbor-total/ V! U6 g  `8 Q7 ?1 a
;;
更新邻居节点的数目,在此进行
' N/ N0 U1 _& p4 P! Llet i 3
/ s9 [9 i5 R: @  Z! Q  g0 Q' plet sum-time 0( z. {0 f% q$ }4 Z
while[i < [trade-record-one-len] of myself]
# _! v1 L" q! M[1 p  r2 C4 W4 e/ P' M5 e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 M5 B8 G* ~" O/ [: a! hset i6 t( `: g) A' [
( i + 1)

$ i. N' P" j5 c1 p3 I; [* h]
  T. x( t  N. k$ z, Rlet j 35 p9 F' N' f& K/ E3 B9 Z+ e
let sum-money 0& [3 e! M$ Z( C! M) J
while[j < [trade-record-one-len] of myself]8 t( a$ k; A- R( W7 k" J
[1 u3 l; y' U+ S
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)+ z7 D% t$ K2 g- j
set j7 F+ j- o9 Z3 D  |- V0 N/ f; i
( j + 1)

9 Y) z7 z- d0 E: ^7 h]" g- @- H9 t4 S1 t1 z  S: p
let k 3' X' q5 W2 p% }0 c5 K! B
let power 0
0 w# e6 }! \" L6 S+ X% `let local 06 x! i  _" ]" a/ L
while [k <[trade-record-one-len] of myself]2 m3 l& E6 z) z  y" e( k
[
; Q( l+ j1 d% x  i: z- q2 B' cset 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)
& j8 T  n5 N: lset k (k + 1)0 q" C- ?3 s" i3 D. [' F
]: m5 n+ T2 ]4 |* T; G( R
set [local-reputation] of myself (local)0 B, c/ n1 L' u+ v
end4 e7 M" B9 k# S4 h

5 \; I" W& e2 G% g/ V$ ?/ e5 Pto update-neighbor-total
  N- h0 N1 d$ ~- ]$ F9 ^2 q( p
& W8 j- J9 [8 y; [8 U% ]5 N' tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: M. u4 f2 M8 Q* m0 k8 N- b7 S, b. K+ j0 V) i" [

% G, X1 ~( ]$ {2 D- C2 K0 H2 f* send
5 l4 e  x: F  s9 X3 D. t" W1 a$ ^- A' \6 O/ J% |
to update-credibility-ijl
6 u4 O  A) \- ~! W8 \
2 F$ Z+ d' w. T! q5 K1 W: c;;
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。
, a* g) H" D! Alet l 03 M" C- [& e! _0 R; m5 P
while[ l < people ]
4 y- x& X  u$ Q" b6 z: p1 g;;
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
( A5 }; g6 Y1 O/ U% _5 V& l1 t[5 ]; K: v: ^9 R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 {4 o, B7 D1 vif (trade-record-one-j-l-len > 3)% `. k! Z. L1 X  X8 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- K( L; t2 I. }0 g/ R+ _' u
let i 3+ F/ u% c- }1 ?1 k( E* H+ |; y) |
let sum-time 08 }7 a" {! F8 y2 i6 m! H' {3 S/ C
while[i < trade-record-one-len]4 I" m( o( B( ^8 b
[$ ~, t1 O$ N' Q3 F( m& J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); [; J( D$ X) B
set i
; q5 L" w6 t- q. m$ j3 s$ {( i + 1)

) L2 K, _. ]9 r; \+ Z4 I]
0 k4 Z2 H. b& E- W! t$ S- T0 U% _let credibility-i-j-l 0
1 \. o% C0 N2 C;;i
评价(jjl的评价)
; E" l9 D, }: c9 ?! Flet j 3
8 R( |, m1 Y- j7 @let k 4+ g# |3 m; y: m) U* o% z" G0 J, {
while[j < trade-record-one-len]" V/ F% f8 e. ^* c( {. c; O$ ]0 x  Y
[
: s3 K+ l- V: y6 Q7 Mwhile [((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# d- F: P: E, m7 ~) Q
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)8 E0 z# `! J) M( d* P6 c- R* b: N
set j! e0 h5 K/ F5 e
( j + 1)

' w: @5 s7 s! _1 r* o; G+ []3 `, l/ V, J/ R* x
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 ))* H# U" u& M! a2 Y% t' j- b- X0 J

$ E5 \. _0 ?9 D& J
# e8 A8 C7 w# G6 @* |( G) {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  n- ]8 S) w8 K
;;
及时更新il的评价质量的评价# ?2 T4 {8 {5 b6 f  l" D+ C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# X+ f6 G+ F# F0 u8 L  Cset l (l + 1)" ]3 H1 ^( N6 N8 N
]
+ E' E& r, `6 W* [4 bend+ ~8 n# _7 P) X3 a4 E( a
7 d, U' f# |+ f2 n
to update-credibility-list
! I/ K! E( D+ _$ i( I& plet i 0
5 c  _/ U) R; U  \* _while[i < people]! t$ d/ F5 ]; I! s
[5 y- \8 ^2 v; m  r  l
let j 0
1 `3 J4 e/ t; l2 l/ p; l! n9 P' x: zlet note 0+ t8 B' b0 Y0 ?* |( k$ D) V- F1 P
let k 04 g- s7 X3 `1 t
;;
计作出过评价的邻居节点的数目
* @' E% ^: H1 P" [0 Z* w( G# awhile[j < people]
# w/ j# `. Q2 i- u: D1 ?$ d& ][
. h% U; h! B/ L. ^! |8 eif (item j( [credibility] of turtle (i + 1)) != -1)
( i$ ~: O+ \8 l' V;;
判断是否给本turtle的评价质量做出过评价的节点
4 v/ t* M8 g/ r+ |' C* J) F[set note (note + item j ([credibility]of turtle (i + 1)))
7 i9 N5 S( G. ~0 G( m;;*(exp (-(people - 2)))/(people - 2))]
6 O9 v/ q# N5 J* x/ ]6 f
set k (k + 1)
! R4 g1 e9 n  u]& y  V0 ?8 T4 \- Q0 U" u
set j (j + 1)
( x* U1 [: h9 C0 G]& d8 h- n7 J0 a. V% k
set note (note *(exp (- (1 / k)))/ k)' a0 w5 n8 s4 i( E- u' G  O
set credibility-list (replace-item i credibility-list note)
3 l- P: T- U1 y* Q( Oset i (i + 1)
* m& ^3 J$ ]; Q4 e  x1 F]
% ]' L' L/ i( r" }7 m. |end4 M* p: O- K2 {2 n; l9 U

. a# K& T& e2 L  B3 _: wto update-global-reputation-list
/ ^4 j1 F) S3 I; O& J  j% F$ [let j 0) E3 e7 e0 d3 t# h+ t
while[j < people]. X. C3 i* I( I" w3 g
[1 M3 B, s; G2 T: D1 Q7 e
let new 02 E0 m4 H, ?* e" g$ z" _9 d. B- V5 y
;;
暂存新的一个全局声誉( F3 x) E# s# g, n9 ~: l' T
let i 0
% n/ U. n' E1 P8 g3 Flet sum-money 06 R0 [% N, P2 g! {. k! Z( e, J9 _
let credibility-money 0
, e! ?% ^7 @1 T, D5 iwhile [i < people]
- P! Y1 o4 i3 D- W[
) z! z( a# b* ~, hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& |7 W& f2 _4 |4 y' e# Q8 ]$ a  aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 s' V( g- Y$ x1 Fset i (i + 1)
( O+ p4 I6 S' P8 y* p! I1 q]- H& [6 T, g4 p8 Q# G) P( r. j# e
let k 08 Z8 k9 ]4 Y4 z! X
let new1 08 j! c3 j, u4 t/ [# G; |! C! t
while [k < people]7 I) P. M3 w9 V$ j
[
' m& r8 M6 |0 S. ^3 U; Xset 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)8 _% g% e3 j; T  T( b  ~- j
set k (k + 1)
( M5 ^( j4 z# \: f" U  H5 i]
) W* ]' R1 i) R/ `7 @; Q4 _& _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 A# j: _$ T, n5 W" A
set global-reputation-list (replace-item j global-reputation-list new)
$ X/ [  [8 Q* v4 e* `( Z" }7 Kset j (j + 1)" K  X+ A3 `8 f# p. s: j
]0 n# d9 `  {3 N- Q: `
end$ U. {5 S5 w) x+ v+ n

' K1 r! O! ]; _# E& I3 i8 b# n: O. J3 R/ ~

& p- s) G! K# B! g. o$ ^to get-color
( Q9 U8 k/ s/ d. O2 z" t2 `) {. k+ Z% \" d  Y
set color blue

2 k- r; l8 `% `  u( T) f# @end: r8 \5 X/ I5 e1 g, r- S+ m

# ^( A" @& \0 i; zto poll-class
5 P) p5 b& ^* e. ]5 L, n6 Q6 N" `end
# x9 x5 Z( k' |$ h' n9 Z  a0 m( k. ]9 u" L5 ?4 L; i$ {8 q% q. j# x7 z9 Q
to setup-plot11 `3 l9 W* K* h* [
& s8 n4 A( |7 S0 K# P, T1 n
set-current-plot "Trends-of-Local-reputation"
" n- ?6 G; \% R7 V' o( g
/ ^& ~' U" M# h4 l, }$ V
set-plot-x-range 0 xmax

* b3 z: i1 s% e9 `: X# O! }; ?3 \' j) m" W
set-plot-y-range 0.0 ymax

" {# P/ l5 ]5 x0 U+ P- k, t+ Y+ zend
/ M" F- ^1 @8 |( b6 r! |6 E3 y4 ~, D
7 B8 z* L7 Z$ E8 l/ Yto setup-plot2
- P3 B2 Z% z8 m2 Q9 j* P
/ _6 w% [/ `  Z  |set-current-plot "Trends-of-global-reputation"
& r: }/ Z) Z! u$ r

7 a3 H; p% y# A: t, r+ Cset-plot-x-range 0 xmax
9 p( O+ g* s( v0 C4 p0 x, E
9 w+ X$ i; q9 R. z' _
set-plot-y-range 0.0 ymax
$ L. Z$ o. J2 X2 {, ]' X/ I8 u( t9 d! J
end
/ I$ c6 `3 K1 Y8 h) K# M7 D. ]% r5 i
to setup-plot3
0 A6 d  `7 [2 D' c$ w' Y; R2 W( z: F) a. c$ g. q  p$ F  b% x
set-current-plot "Trends-of-credibility"

" p- `7 T  U" d: m/ R6 f: a5 _
# `+ S# ~6 S% Oset-plot-x-range 0 xmax
! n- H( ]2 x4 E4 |( ?# J

; b8 m! i$ Z4 h; P8 K7 J! Jset-plot-y-range 0.0 ymax

+ s" l' E3 o/ {; Z3 fend
% k& M( j8 R6 |6 w( b9 J2 D* m4 J+ y! L) l6 J4 Y' [5 x8 J" Y: b3 [
to do-plots
7 i  k* Q7 R/ s9 ]9 Lset-current-plot "Trends-of-Local-reputation"/ ]/ r4 {, x. \) n- ]
set-current-plot-pen "Honest service"5 r6 Z2 c+ o# {
end
" R! n. @9 p% n# ?8 D0 v; T3 }; w& _) C3 e
[ 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., E/ i9 e$ Y& |4 B
- b  |1 m& q0 Q
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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