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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:0 V2 C9 r: N, X# }) l
to do-business
& \' {# b) K- }" k4 T. G/ m# R. x% \ rt random 360* t0 c- w' B! ~& X" A* [, |
fd 16 F0 ]5 L8 }/ A4 ]; }/ `/ Z
ifelse(other turtles-here != nobody)[
3 P* L- f0 k+ e! u" z$ ]) 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.
3 B" X5 D" }) D  m2 ?% f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 C1 S( j& @) Z' H" u& I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 E- L9 A9 r8 W5 A* J   set [trade-record-one-len] of self length [trade-record-one] of self
. H' |3 Y5 U, b8 ]   set trade-record-current( list (timer) (random money-upper-limit))
+ o  Y1 z% n$ z- k+ G9 ^7 ^) {
9 `+ [! w% V% {2 G( P问题的提示如下:' k4 W4 H0 M, C+ D% S+ Y/ Z7 {6 ~* x
4 I5 o- |; f) c4 q4 Z0 F$ o
error while turtle 50 running OF in procedure DO-BUSINESS  I. R- Q. b1 R; {* L  _
  called by procedure GO3 A' }5 ]. j9 M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
# I' V/ L8 G. w3 y; t% m
(halted running of go)
% y6 X  _) {1 G
/ r4 T3 X, v% [5 y% H0 I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~~
3 j6 H% n  k& S3 H+ C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5 u0 k$ D1 t, y  R- k
globals[
8 N" U0 ?7 k! @4 `$ h9 R) jxmax
7 N4 m  d+ o: Q+ {' bymax4 y( r1 X3 a0 V' d
global-reputation-list
8 o0 w" s3 w1 O$ q0 g
% W# o( E' J9 S9 e9 x7 T;;
每一个turtle的全局声誉都存在此LIST
6 c$ X, C, q; I/ }" t# N1 Bcredibility-list
. E, z1 Z, T3 N7 H/ W) a# x;;
每一个turtle的评价可信度
7 a4 @0 [! ]3 [# y2 N2 chonest-service( V* ]6 v3 Q5 M  {  R8 [
unhonest-service
! z8 F& X' A0 J" r! Woscillation! i0 u. a4 X7 {. ~9 S% x
rand-dynamic
& N, Q9 j; F, y, i], E1 o1 [! Y" t1 R* o# K
+ ^: S& w9 d7 V5 H+ a; B
turtles-own[
" {# C6 x9 v/ K: `trade-record-all5 M$ {( [( O2 i8 P! F# F4 Y1 }; g
;;a list of lists,
trade-record-one组成" P) l% ?4 s( q1 K8 f
trade-record-one
+ K! q- X. {1 U+ w7 U. T9 `3 H;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 ^$ s7 z1 T1 l5 C) y1 N: Z
: |  h( R& E" N9 y;;[
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]]
" C2 s& l, R' Q5 ltrade-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]
  X1 t. p/ O2 t7 n+ B* E' L: _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' p) V6 S. t. C
neighbor-total
4 n, P- I5 L$ X) k;;
记录该turtle的邻居节点的数目9 X: ?. {7 N2 U
trade-time" y( D6 o( w# N5 l! E# V1 [, ~
;;
当前发生交易的turtle的交易时间
' t& C% C, r/ T9 k, z5 l  v$ T7 tappraise-give
2 i: t' _/ U: s0 W" U;;
当前发生交易时给出的评价7 b0 ^. T! w( q( Z0 M8 r- l6 l0 b
appraise-receive6 ]9 c' b0 h/ F# t& M- P
;;
当前发生交易时收到的评价
6 H: ?7 F- a4 O$ t# Kappraise-time, w: F% k8 s. m; \
;;
当前发生交易时的评价时间: n8 h  H6 d) X! D. z  M% \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" f7 L9 a7 o* O, G
trade-times-total
; L" y( K; K, A. m2 _;;
与当前turtle的交易总次数
1 T: U8 ^3 \9 F  l* _9 R2 i3 Mtrade-money-total
' f' U2 D% U1 };;
与当前turtle的交易总金额
- Y$ `9 d& _: W, v$ b/ @4 M( J, \local-reputation  I% E* \! K) x6 J
global-reputation8 O1 E9 y% p+ [8 V2 \
credibility5 i5 y, T+ l0 \( v
;;
评价可信度,每次交易后都需要更新
' L* }" K6 ^) {. c1 h" `credibility-all! E% v1 @; r4 G  E
;;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7 \/ a0 v5 D8 Z( e5 ^% k

* b8 R4 [5 v# H;;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
4 B! c3 h5 {& |2 E- j+ kcredibility-one
  O& G; p# Y% a% Z' ?* P( ?* W& B;;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people0 Z1 F0 S' c3 r, T. Y
global-proportion
% p( V! \2 H5 C5 ~" k2 j; Qcustomer
0 P8 g( L6 C# ~. Lcustomer-no
9 E0 b! A5 g- ?trust-ok
7 J( |7 b, k2 T6 f" d6 mtrade-record-one-len;;trade-record-one的长度$ m" Q. h( K# p, p; v) p7 m
]
+ E2 B3 Y8 {1 K# m+ B3 h2 o# I1 Y
;;setup procedure
/ k3 J, t1 U4 X$ u2 T) I6 \& Q" J
to setup* B0 a4 h: w7 |: p* F
' h1 E5 A' }" k9 S  i. ^; H8 I
ca
% O, e) A. E- m+ l  U# o3 C

$ A# V% G" }& m( Einitialize-settings

2 ]1 q  F1 f% W, c) f
, n% ~" j: y6 @4 Jcrt people [setup-turtles]
; h4 w% [0 I# E# Q8 W" S" i

1 H! z* i! O: e# X  [6 ^reset-timer

2 G- L6 [5 E, R0 A  H4 ]
# @* P. k+ Y, M2 I* m: spoll-class
8 p. U. j2 H  R/ C

1 M; ~5 q" n8 i0 F' I0 esetup-plots

" ~* ~! M6 X- o# ^5 L  f) g) {& `* ?3 z$ Q" y+ `( o
do-plots
7 e4 ~$ ]9 R! A6 Y. t- c2 M, j
end+ @4 j# M" j+ W: @; h: V, N

: c. H" z" x  W6 i: Tto initialize-settings- Q1 q+ N. q/ F) Z
# A: K7 \4 Q. _0 m% L
set global-reputation-list []

' A, Y& y1 L' m
+ q- S3 }: A+ P$ }! N0 B' N  ^8 t$ wset credibility-list n-values people [0.5]

' c1 L* }3 m  {$ @( ~, I
( a6 Q1 M$ l) Wset honest-service 0
: O* ^4 }9 j4 g% _; I5 B
% p9 ?( B% v. O5 _
set unhonest-service 0
4 y9 B4 A1 o/ u& X! m. R# A
, B; O3 ]# F5 l
set oscillation 0
$ {' [. S9 X: \. V+ @7 B/ }

/ m, ^, y$ u1 d2 C) Aset rand-dynamic 0
! O8 Q  |1 T, P+ N6 L8 m0 E6 c
end
5 m! L$ V- r- H( w1 }" A' T: m: `% C3 g
to setup-turtles
% \0 l0 j( E3 e  S9 H( i6 S2 Qset shape "person"
0 F5 r3 b) f2 l: W0 O  B9 Bsetxy random-xcor random-ycor) y  ~7 C2 ~+ z: u( Z8 r
set trade-record-one []! m1 j9 {# }; P

% ]+ j% Q8 {1 g8 W- wset trade-record-all n-values people [(list (? + 1) 0 0)] , z% q7 L( y: l
5 G; k8 t5 F# B: s. O1 o, z
set trade-record-current []
% ?! o3 ~% }8 H6 N- l: @7 iset credibility-receive []
. T% |0 a/ y9 }0 Gset local-reputation 0.5
! k- E( W# t2 f/ \3 Q# cset neighbor-total 0
0 V% x' m  m4 C+ A9 l' Rset trade-times-total 0
3 B4 F. y$ x9 sset trade-money-total 0
% T4 I& I4 f( d9 R. C/ o- dset customer nobody
+ ~; d0 y1 I# M+ S9 pset credibility-all n-values people [creat-credibility]
0 I* B$ \  B) O4 C6 T- Z8 Tset credibility n-values people [-1]
' j0 [; e' X' O. K0 B) k5 nget-color
6 [+ D* @6 `' g, R7 }! n/ l

4 ?% n/ r" {& A* ?end, c! B# P$ R8 O: b6 D+ p& I
! X. z: y, m9 C8 a! i: a
to-report creat-credibility
% n! a3 Q- c) ^7 V2 S$ b  o( vreport n-values people [0.5]
; G. x/ @. B. X1 gend: ~) }, ^( H: d4 d! ?

/ C, D3 z9 n0 ^1 E3 gto setup-plots; H0 D" `6 r/ y# z6 _1 \, s

# w$ m' R2 f8 M% [  Y, @) eset xmax 30
2 g# b4 b  d$ f" Z3 {/ l
# I9 x+ Y9 h' o3 J% h4 T7 l& ?
set ymax 1.0
9 Y5 _' ]# U. i* z+ F
. s9 O0 W0 R& L2 n9 ~: o
clear-all-plots
, ]3 _/ M, i4 F0 E1 u- v3 m
$ g) B2 v9 H4 o1 ^+ k9 q' f% u
setup-plot1

3 m4 {, k, x4 T& P' C7 f2 J5 n
# v. N5 B5 _- U9 a: msetup-plot2

% P! Z  O# ?# W' V1 r& r6 ~' F* ^$ K- B
setup-plot3
4 k% a  E* H- [- N
end
  \4 l6 [) t4 Q6 |# W& Z
6 I  T. X! c( F3 \9 Y  o# j: N;;run time procedures
) ?0 h" u! k+ @1 B& b7 X2 V0 M  u3 U; d9 D# m6 P
to go
" Q5 z  H7 L0 |' c( `4 q% E9 L; d1 z3 x5 s% O0 _
ask turtles [do-business]

, o4 ]3 e, \# [. c0 P6 R) t5 Tend5 C  f$ b: r9 e, k
: c+ b1 t2 ~) [" v$ N
to do-business
# K7 J- v* ~& J
6 ]- A( m. O2 k

" P+ I! ~  q8 \- W: j0 f! l+ crt random 360

3 n1 C2 G: _! c9 l  ]- i5 g- g1 @$ ~/ @3 q" D/ H$ [" ~
fd 1

9 R7 J! z2 _/ c& E5 U& a
, R* E* q. z7 }) K9 @ifelse(other turtles-here != nobody)[
/ U- c2 {8 p2 C

1 d  A$ ]" m' S6 uset customer one-of other turtles-here

% H" E' l5 p6 R% Q6 \0 \/ ?  A5 p- A1 m6 P8 E2 A
;; set [customer] of customer myself
+ R7 `1 C' T8 y9 W
! J1 i, Q+ x5 N
set [trade-record-one] of self item (([who] of customer) - 1)
5 t+ `% I7 }; i; x, j[trade-record-all]of self/ e. Y! H' y  `8 u( m1 [+ q- a
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 P2 |% T2 @( I- s6 U, u$ p( S7 O1 Y" v4 C  w
set [trade-record-one] of customer item (([who] of self) - 1)
* j8 _$ \7 ]0 |# \9 ?& r9 S, q" f/ t[trade-record-all]of customer

4 o. Y/ x6 J6 F0 L9 F4 H, P' t1 L
* |! {6 A) ^4 K! U2 H; {set [trade-record-one-len] of self length [trade-record-one] of self
( R( w) s3 C8 v  D9 w
* x/ y5 M6 P+ B4 Y
set trade-record-current( list (timer) (random money-upper-limit))

" H6 `* B1 Z, V, P9 z) r- h
( Q5 X0 R) e, vask self [do-trust]0 i8 w- K; U+ J& ]( E; n& j
;;
先求ij的信任度
/ g+ L! N" L5 b8 @
2 Y  T1 q, X% R6 _if ([trust-ok] of self)
3 G+ |# ^- ^9 ~9 Z0 b;;
根据ij的信任度来决定是否与j进行交易[
' D# l) |* H0 e( O% p! cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- ?+ r8 n1 w( E; P
7 b  E+ K2 J) s: [! {" t( W[
2 x5 w1 R* `( T( v, \5 `" L7 v" S* x
- I. t2 d5 l9 [
do-trade
! L) a) e2 A# z9 W

6 H5 m" ~3 P/ uupdate-credibility-ijl

0 Z# }* H! i9 s
5 r+ ?7 r* N7 C' H  Lupdate-credibility-list
5 s) x( X2 o7 M' H+ G; f

9 k, S( r, B. V4 X! q, e- a. I+ B2 T2 Y) q; s
update-global-reputation-list

8 S& w9 P* p- G: i% X& i$ Z- }. ]! q& S  z. n% z2 e
poll-class

4 ^+ e7 {" _2 T, @; g7 i: V+ \  e' E- T
get-color

9 H) A0 U1 [# }; k2 ]1 z2 k8 \1 }  q# G; x. ]3 l' ~  \9 A: _: A+ s
]]
7 |" ~6 u* S6 Y5 E% H  v9 W5 o$ L# l: R* F( Z- I* R6 m4 h, n: U
;;
如果所得的信任度满足条件,则进行交易" ?" o: f1 M$ H3 ], W
' E9 ~* t# J, R8 t$ r. X
[

& o# G) Z7 {6 r% l% k$ i% K) Z4 ^3 Y% X3 u# s
rt random 360

/ A: B$ L3 y1 `% u% ?* S6 |# K% t: f5 _& X
fd 1

8 ^% _. G5 G. l  l/ R
+ K; T) s0 C. C7 \; c! _]
  l( V/ U" V9 c2 M" u8 \6 m

2 P: h. K# H; L. f. v; Z% Vend

/ n/ u" Y- E! Z# B' k" f, S9 r' m4 v) _3 V+ t/ q
to do-trust
% c. I- b/ X+ T( }/ _* O% w7 gset trust-ok False
3 t6 @& O* k6 q* A% w. d( p; J
" R( D5 ^: w7 D! M. N& c6 [$ Z
$ A4 Q* q; @4 w7 {
let max-trade-times 0
  s- E2 _4 V4 x1 ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], k8 `, V7 j$ D, m9 w  s# y
let max-trade-money 0" j/ L( T, m* P2 J& W# \: {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 U- o0 S: W3 Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 v/ Q8 O/ ^5 f6 a& Z' P7 L% x; t+ e0 e& q7 u
2 |9 C; N: m. g- J
get-global-proportion
* l4 x% ~8 b& ^  |! B# _let trust-value" O, \* H' J! G: w" u2 e
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)

+ E: J/ f, B# T( d4 Bif(trust-value > trade-trust-value)7 ]0 P1 `+ r) ^8 D' ?
[set trust-ok true]  G  S- T& _6 q+ f4 t
end
* F! t  ?) ^7 o. a( V6 g1 g1 F/ A8 l- T0 `9 t" R5 v
to get-global-proportion6 \" }, z( ]/ g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: g6 e9 ^! ^- p% ~5 q[set global-proportion 0]7 x. X( F) e- b9 i
[let i 0' z* c( R; s0 o; Q6 b2 i+ W4 ?( g' F
let sum-money 03 i3 o" H' m9 T
while[ i < people]
5 O: g) ~( z3 }6 c+ X[
4 l( @' C7 a( }' \3 k2 U  Fif( length (item i
; `) Z3 n6 d6 {& K; U2 i8 n; W[trade-record-all] of customer) > 3 )
, R3 C: W5 t: N5 L/ N4 y! h, t6 Q1 S
[) B1 |" V: `8 w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! `0 f/ y6 L* K2 N! _6 |
]
& f8 b1 ^, u; H0 E]7 ]$ k% \. ~( G/ Q0 U9 t
let j 01 }4 h6 ^- Z3 C4 g/ H! e
let note 0; l3 a+ g* D" K0 o0 t4 j' C
while[ j < people]
' X+ o- S3 O  w[
2 h+ I  c" I& r' V$ h: _8 ^; mif( length (item i! W' `# ]' D8 L0 B. a$ w- S! Q
[trade-record-all] of customer) > 3 )

/ n$ ^/ ^: `1 S9 p  k" V[
: J/ V: K# D: e5 Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), M. \* g6 V- Q  y1 a. A
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* P, q/ K# r& E) ?6 h) i[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 v% I. m' y0 x6 g$ m) ~4 P5 O]
0 P  T9 C. N" u3 L6 X. I& A; |]
. w2 D$ W8 _0 r1 S2 z8 sset global-proportion note
  i8 k/ v7 g$ m: p8 Z]; \9 F7 T& W, q- M% L4 a
end  J; n' J4 Z7 O8 P$ t

( r1 U2 r" Z/ d+ `( }3 ?5 eto do-trade
8 h; E3 v' Q+ G0 Q;;
这个过程实际上是给双方作出评价的过程
5 u6 J  \. ]) c0 z7 o/ `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 `0 D4 r9 t) c0 o4 {( H9 q, N! Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% L2 ]7 U0 c: T1 v( G. x2 ^set trade-record-current lput(timer) trade-record-current
( J  T$ I: q& w$ \: s, R; w;;
评价时间
" m4 |8 C  `* I( S" k( _$ ~6 `ask myself [
* T* j: Z  J' Q' W- `* z9 v% mupdate-local-reputation
7 u. d, {  j( U! b) Rset trade-record-current lput([local-reputation] of myself) trade-record-current
+ T0 |( X5 U9 V* q]
4 t  L9 m3 o# C8 Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; ^+ y7 V2 f) N;;
将此次交易的记录加入到trade-record-one
, N0 \' K; t. G. dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 r8 @5 _+ l; j; M/ k5 Vlet note (item 2 trade-record-current ). O" [  Y0 g; q
set trade-record-current
" V. e- ^1 U" n; M- S& y  b1 I(replace-item 2 trade-record-current (item 3 trade-record-current))

7 h. }/ w2 h8 I/ f5 u+ [set trade-record-current
- ?! }/ a+ ]+ ]5 ~) E( O( e(replace-item 3 trade-record-current note)
% {( e7 m! ~$ E' u2 w9 v0 B4 X# f
. J& [7 e2 P2 j3 \+ F+ z- G
9 K- m8 G/ H2 M% B
ask customer [; k4 y  @/ O& W% h; ]
update-local-reputation
; i# h7 ^! H: D& D7 Tset trade-record-current- O- ?+ M5 I8 @, Z0 ?; f2 Q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 }) _2 E; |  `1 Z1 ?0 B
]
& V6 y/ G( j8 i6 P( v( v% Q: ]  ^5 O
, V& L4 j" ?! c- _! i( i) x- P% H
+ e8 A) y* S5 |  L4 l, _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! X+ B/ c% p2 V0 I' t" e0 A
/ z% ]3 c  f" K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' y! ^+ h: A# |, S  B$ b' V& s8 G! b;;
将此次交易的记录加入到customertrade-record-all
- {, Q% u& v8 R0 k; u5 O4 ]6 S) ~0 K; Oend6 `* \6 w0 p( G4 U% Q/ q2 X
. K1 X2 C3 {/ t/ k
to update-local-reputation% y' q0 S- b4 j) f$ f$ i
set [trade-record-one-len] of myself length [trade-record-one] of myself
, I0 S5 ]/ [3 h5 V# a2 j- x, y
7 V, s2 s" L! H# h4 n; B4 f
& ?# o! h& S  x. n;;if [trade-record-one-len] of myself > 3
# J' Z3 [  _; ~" Z  `7 y
update-neighbor-total2 [0 ^* [, o' P" y
;;
更新邻居节点的数目,在此进行" u, f( ~7 @8 N  E' N# j
let i 3
8 e7 Q+ a4 d6 \. ~8 C( B. elet sum-time 0
* o2 S7 l, R7 `6 Z; x5 P: _while[i < [trade-record-one-len] of myself]
& s% y7 b8 y* M) R6 }9 \! b[
) c9 A( h) ^7 _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 c1 {0 }' ]0 {set i
* e( y" I; f% t7 Z; x: F; R- ~+ f( i + 1)
$ x5 t& n% l0 M/ Z" d
]
7 P! h( p3 P$ }* K% b% |let j 3
# s9 W6 @+ j7 B3 y( {7 klet sum-money 0
; y* i% ?7 r8 ]( J6 C% f! \while[j < [trade-record-one-len] of myself]% h9 W; a$ |# A3 G
[
. z1 M5 {5 K5 k9 r: u6 Qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& ^7 w9 U7 w8 X2 ?9 u' a9 P
set j
% h+ D$ u$ C( ~) l& C6 x* r( j + 1)
: |5 _8 _& X* b
]
7 ]2 I9 t( q- B1 A2 Ulet k 3
3 U1 e  X# d  _" olet power 0* Z2 a! G4 [0 Y% D+ ?0 s! P
let local 0
) @$ m# L* U8 S$ G5 i! O# n6 _while [k <[trade-record-one-len] of myself]
1 w- i0 s  o2 c8 X& s8 x: Y[  H5 S# k+ Q3 w
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) 8 v. Z9 X$ E& k
set k (k + 1)  H' X: r! o$ T/ e1 }5 ]" R  \8 Z
]8 a# o- Y/ e) v4 Z, E
set [local-reputation] of myself (local), {! D  j% s* C5 W
end
2 Q  @& K6 l# x' }& n, l6 ], Q
7 B% U, E: M& g. Xto update-neighbor-total4 y: m: C. x  l6 ~8 X
9 @& i7 w0 C- M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ z  H9 e3 S+ ?( g2 `$ H9 h

& ~- T. R4 T  f2 S  z6 F
6 [6 h; R/ a, ?
end" q! j7 G0 ]0 y! |3 c: N( [
4 M7 b( R1 q* a# P/ M6 v
to update-credibility-ijl
/ A/ T0 m1 f* Q! H& H& k( A) c. T8 k- H* l
;;
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。
; i/ X* p" |0 d( \- Zlet l 0
% k4 m; V8 O7 x1 |/ c# r0 cwhile[ l < people ]# a  d! Z" \; h9 Y/ O  x7 S
;;
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
/ ]7 E3 k2 W) N& u[
' g/ Z% A4 m& L) N0 w$ {let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 Z+ r7 d) r" {" W# Q1 v3 lif (trade-record-one-j-l-len > 3)
" A$ D; n! D3 ^! ][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
) Q: o, X* l0 h. ^& Slet i 3
9 u' w/ {5 [" T8 D% |" z$ `, E3 @let sum-time 0
' \7 I/ e' K/ Bwhile[i < trade-record-one-len]
/ a& X" P) |# y- u8 K9 r! m2 |" u[$ X& f  w5 [% s; `
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 j6 ^2 t  K% t" a0 l# I0 Y" @set i6 s4 h9 d$ y4 o5 f* d
( i + 1)
) I0 [7 ~% p2 \0 F/ }$ g# s0 z
]4 t% ~" o8 D5 n
let credibility-i-j-l 0
* [  i$ [8 Y( g, @" `' }' t/ G;;i
评价(jjl的评价)
5 ?+ F: ^' s  M# R1 W& N  `5 [" C- Mlet j 3" q2 t2 e1 a# K# E; t& a$ L, P
let k 4
. ^: J4 P0 t9 v! H  u& p5 Fwhile[j < trade-record-one-len]
$ z2 b; K7 s/ c* [9 J0 G[
3 ?6 d/ y) E% {) @+ F+ V" awhile [((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* m/ }* }. b4 o$ T' g$ a
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)
7 ?2 i$ `. N+ G" Fset j* ~& L( K: s2 ?
( j + 1)

& m" ~: `% M2 \& Y0 ~. _# H4 X! T]5 r, a+ v9 Y) X- d7 J" y: L
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 ))% d% X9 C3 e1 \$ h, |: |8 P

) b0 S) X/ }) S* E) u8 M  u7 v" s+ b

' Q# l% c; J) c) ~; y" clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), {2 J% F! Y- F
;;
及时更新il的评价质量的评价( q7 u/ P/ r$ ]) l1 H; R2 R/ _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 v0 Y. r1 {& h$ l1 ]set l (l + 1)- S* ^" G( _+ T. {. H) Z: g! N
]
& [% l6 p+ G, C: [- C- f) vend
0 ]* n1 J0 B) e% c, u5 c
. n1 D7 J8 Q4 R1 H* sto update-credibility-list( ]+ ~- A1 k' I/ O* N
let i 04 x( ~- o3 p- d- U4 k5 ]" L
while[i < people]
) w! j: B+ r$ g[
( |% O- Z, R! E7 |8 {$ Flet j 0( n' Z0 t% ~  i
let note 0- f3 y' @% r& O$ ?) k
let k 0
2 v) Q4 g3 {# D& o9 l;;
计作出过评价的邻居节点的数目
0 h9 s) L9 y9 S3 Cwhile[j < people]
, ~9 i! c$ U$ K! z! q# f% U[& C7 {' y  y% i5 K
if (item j( [credibility] of turtle (i + 1)) != -1)7 w- Y. s2 `) w5 `& l
;;
判断是否给本turtle的评价质量做出过评价的节点3 W; x# T( J6 b
[set note (note + item j ([credibility]of turtle (i + 1)))4 M5 ?! f+ ~) [% ~# J
;;*(exp (-(people - 2)))/(people - 2))]
4 ~7 w7 \2 E# n4 `% r9 n; ~/ R1 }
set k (k + 1)) E, X7 X. _, q, x/ v5 Y, C/ c
]" p. |3 m; ?1 k2 x' o
set j (j + 1); z6 _$ ~/ ?% {2 c; w/ J9 Q& L
]
4 b; z! [& C8 t8 rset note (note *(exp (- (1 / k)))/ k)- Z. i+ {1 m. t. @0 X" @
set credibility-list (replace-item i credibility-list note)* V* }- z. i+ K) r8 j
set i (i + 1)
; L9 t! D$ q0 q* h$ H]
" N1 ?$ b) t6 z% M; Tend
! z1 M) c2 N( w' r7 o/ Q
* @/ q' |2 g) ]! p( Z7 N* lto update-global-reputation-list
% z. _# `/ m) V/ d% jlet j 0+ @( B. {7 {) x, n
while[j < people]# F3 ^7 f/ ?. Y/ o& U" [" c7 l  X
[
2 V$ E+ q) M* t( O+ x/ W3 v$ ]# [let new 0* D3 d+ z; V" ]0 ~
;;
暂存新的一个全局声誉
7 w1 \+ p) {- Z4 }let i 0' {7 c' N9 i" f! S4 P6 ]) o
let sum-money 0
# M' {+ V. U- ?let credibility-money 0; W8 g/ l1 t# N$ {2 z# u
while [i < people]
# l" n; d  s; s' k[& Q' m# k. b( S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 O; S. z- C1 \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, o: B1 h2 A! ~/ A- Y; ^; S' Qset i (i + 1)( g$ r* q9 V$ @1 E7 Q+ P8 H. a( y
]
3 \! D4 x' i6 f3 L( i0 A, A& mlet k 0
' U7 v' o3 c/ o8 J) ^$ n7 |1 {let new1 0
( M, A+ [/ A# g2 cwhile [k < people]" `  b; B/ C. N) N0 U
[& c( n2 h. m  [
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)6 U: n0 |& O% b$ y/ @  R
set k (k + 1)/ X- Y8 V2 v0 A" Y: z" @+ I
]+ R0 N2 T  r/ j& Z3 T4 n: s" Q) Z( G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) l2 D! X! w; K! g( l
set global-reputation-list (replace-item j global-reputation-list new)4 l7 i) d4 a) M- Z" Z6 d: J
set j (j + 1)
: i  s2 B  h3 N$ o+ q9 @]
0 y, K( @1 i$ F/ s. j; ]end
! t( i+ }) a3 ]  I8 c: O% {) c0 g4 F: m8 M2 u) S

& g" ?+ N7 Z# |0 [; R  X
" M* @; Q( E) A8 y2 \5 r8 p3 R; pto get-color2 R7 m& q6 q# j* D. C
  I- @; w2 d' {- Y0 O, A0 T
set color blue
! d$ F. y4 w& ~" s! z! V2 m' q
end' m5 a+ @+ n) X7 F
- T+ k) H& L8 W% W' _
to poll-class
/ V5 S) Z0 Q. w8 S: cend2 H) ^! T2 z2 D) j  t7 }

  h' ]/ x) O' V' r$ h8 a6 g2 M  Zto setup-plot1  x% a* ]$ ]3 ~2 \

( h* f4 ^- T# R+ D- k4 D7 h1 gset-current-plot "Trends-of-Local-reputation"
: ]. v2 s/ _% M- g3 K- B
2 C# ]  f" K- S5 |
set-plot-x-range 0 xmax

# t# k+ h, C" K, }# i/ Q. x
, D) r5 O+ i6 b# bset-plot-y-range 0.0 ymax
$ ]8 ^% i; z& [2 L* D1 x3 |: H* a" N
end: H: A0 G$ K5 o* N1 }* a. `
5 `" ]7 o8 D3 z& z- L+ m
to setup-plot2
0 X0 J% j2 N( x; O0 K4 g8 |' h2 d0 a$ O0 H6 S3 Q7 P
set-current-plot "Trends-of-global-reputation"

6 }$ M; R6 T. F' d# @1 P) X0 o4 T; ^" D1 x
set-plot-x-range 0 xmax

0 X& b) ], G$ @. o7 X9 c
# C! F" k" v8 b9 m4 U2 @4 N) o% I/ cset-plot-y-range 0.0 ymax

& K9 S* V8 V$ y" |end7 i7 v& L) E8 r4 j) Y

1 y: l( U, s: F$ M/ ?9 ?to setup-plot3
& u4 A4 V) X# v1 m
" G) y2 K+ g% e+ pset-current-plot "Trends-of-credibility"
" V) C9 l, e/ f. y9 F' S9 E

, B* R8 E7 ~: C1 M) ]9 t: Bset-plot-x-range 0 xmax

) o+ H# i" o- a+ H) X- [6 h0 w. B0 h5 i3 l/ s% \) m
set-plot-y-range 0.0 ymax

9 E  }  F' B) Eend
  @/ F& w' W/ y2 q0 B5 O1 x" ~+ s+ R# v% u
to do-plots/ i, P- i4 A, g
set-current-plot "Trends-of-Local-reputation"
  e; w* \- F) h1 t6 pset-current-plot-pen "Honest service"
, t8 e/ q0 r7 c9 ]. [! dend
% E# L& \, O8 b2 \7 t
+ Q# t) I+ n% r' s- c. x[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
9 O; I5 u0 @, w' P! [3 Z  ]1 y- V& a, E  t: X0 v- w" h0 E5 c& J9 i6 r
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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