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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:8 O, j7 }8 w, u
to do-business
" ^) f! m( j0 g1 S2 t: x7 f rt random 360- ^- N  P; F+ m, a" _* e
fd 1
, D! O8 V! `: |. G: P& O! a# I ifelse(other turtles-here != nobody)[
' O8 \! R- [" Z1 r. ^   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.
2 N5 o6 w  ^: J$ b# x/ [; ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. h9 o/ t- b& S- @' F1 g& p   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! }7 J: P/ \$ ~( P" ?- T4 L
   set [trade-record-one-len] of self length [trade-record-one] of self' Q0 ^; I7 r. q! \6 `4 }7 x+ F" H
   set trade-record-current( list (timer) (random money-upper-limit))5 l- c; h, A$ `
3 u" c2 z& r! M* A
问题的提示如下:
/ ^0 f$ i7 J1 r3 E( e  v' v3 _" ~; W; E$ \: w( c9 V
error while turtle 50 running OF in procedure DO-BUSINESS
9 b6 r5 Z  j( G$ ]+ F3 @1 o  called by procedure GO# Q) J$ d  Z5 w8 d' ]+ ~7 B- G
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  O9 z, \. w7 S* @2 n4 [6 I/ s4 b
(halted running of go)/ n, b2 W4 ~/ r/ D' j  C0 h9 \

& x0 p+ d- M" R0 U) b: W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~~( Q+ x3 j  x, K) X0 }
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1 F$ e2 ^$ O& P2 V, M
globals[
) K# E7 _4 t2 v6 R3 i# ~xmax
/ y9 x' |" w# i6 o0 a0 u, ~ymax9 s( c* A# s3 R
global-reputation-list! j  i3 Y4 W/ _0 h) V6 }, m

2 b! J- K" G( I, D. f1 B+ z2 |$ E;;
每一个turtle的全局声誉都存在此LIST* r7 E( R0 l1 ]! D9 M; O
credibility-list% k* I( W$ ?) O5 i- `" ^) X' O
;;
每一个turtle的评价可信度, |" E. G3 g/ N, T
honest-service1 z7 |+ x# E0 T7 d- C
unhonest-service
8 ~% s/ D3 g2 d( W' roscillation8 s3 G$ m3 m3 {/ l* L; M' m
rand-dynamic
! V+ u" ]; f2 H% f]
3 u0 j# d6 v9 k6 d8 [) {2 z$ }) E& K4 H
turtles-own[2 d$ e# [! Z# Q% ~. W  {
trade-record-all4 U- D# |. H; I9 h1 m& X# o* s
;;a list of lists,
trade-record-one组成- C) \5 [7 @5 a
trade-record-one
5 i/ }: f7 `8 X, m;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( m' K" P( P3 n) I# K
- [( j5 e& L0 j% i4 p  d* s;;[
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]]
+ `  J5 E- ]- C6 C& l) Y$ }0 rtrade-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]
- n1 K  }; }3 G9 T- R8 Gcredibility-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
2 J7 m6 t, x, |% N9 c& Kneighbor-total
# t2 @+ C9 g$ r4 ?" s* Q: b;;
记录该turtle的邻居节点的数目
; G& f7 X& z1 t! R( wtrade-time/ s5 A' ^1 g  J
;;
当前发生交易的turtle的交易时间8 x  T& A1 }% K  r9 ?- _
appraise-give4 k- T& z  D; f
;;
当前发生交易时给出的评价
+ Q4 R7 Y: s, ~3 a# ?2 a- qappraise-receive
+ K7 ?5 C) n. {  I! X1 z;;
当前发生交易时收到的评价- l- z+ R7 c$ l/ x+ j
appraise-time
' V) q, ?! w. t3 h7 N+ q;;
当前发生交易时的评价时间( d8 w2 O1 W' ^; h3 b' ~; i  @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% n5 H! [4 L6 x
trade-times-total: D" v0 R, f5 g  O/ f" x
;;
与当前turtle的交易总次数/ a2 o8 O" G! E' Y! j: A
trade-money-total0 ~& H/ S: R# @+ K9 t
;;
与当前turtle的交易总金额- A. ^" U, p% W+ l$ B- f, b9 g0 X
local-reputation  e) F: s4 b1 u$ p! }
global-reputation7 W! G; r7 r3 @& e7 [
credibility' B- g2 c) [- _' ^) b/ N
;;
评价可信度,每次交易后都需要更新, h, p& A7 J& r, ]: @& ?
credibility-all
% @% H5 w2 C$ y. G. \+ @' s;;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
6 U: G9 G. Y; r1 c2 w' ~
2 v, w* @6 ^$ A5 R  D8 c8 R! ];;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 m1 W6 V* t# S2 Q1 m
credibility-one
6 z' b1 y8 h* N4 o  C) ?;;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 @1 L: c. p2 h/ tglobal-proportion9 Y1 Q6 S5 Q! F- }" s7 m, j
customer5 C' @) d/ ]& q) r# w# d6 I( }& Q- W
customer-no/ Q- ^3 e/ t0 W8 S
trust-ok
3 F; b; ]. w* ttrade-record-one-len;;trade-record-one的长度2 a' }' {3 z3 V. Z: c0 |
]
$ R3 Q. j7 h( V, P+ T7 [
. ^! R( O. t) i3 e' M  N* W& f0 L;;setup procedure
4 G3 N) D% R5 {2 M1 @" u  g, e: g! j3 ?$ s1 V  m. {4 D
to setup
: x0 |* O2 V; z  T" H3 Z
$ k3 s2 n1 _& fca
$ Z% O7 O: p" q9 F" @9 h

) y- r( o) K- e6 {" n8 T) Xinitialize-settings
) B3 e1 y- D% \$ |# ^; j

- u1 F6 l' L: c) K$ P( o$ ycrt people [setup-turtles]
+ R0 E5 Z- m( @/ \
# r; Q& G5 o6 {" ^$ X% n! Q
reset-timer

. c! ?, m: @+ D1 ~: {2 A
# {" a4 n% h" m( g+ Ppoll-class

2 m) k7 P( B4 l3 Q/ j; l, {
) I9 P* b, a2 [* I4 asetup-plots

9 z& ~+ `, }/ |: \; y
6 a4 o6 E0 H9 H& B4 L; C4 c) |$ ?do-plots

  N; M2 h5 ^7 w6 gend
; s; w1 X% r9 g; z' n+ F. o4 w
7 P. P: A# _1 |. Ito initialize-settings
9 D: o: N9 a" i
; b5 a9 W6 k% u: }- Oset global-reputation-list []
4 m9 d; ?7 ]8 z# L0 [
9 @9 L) P$ Y$ h; G2 }+ q
set credibility-list n-values people [0.5]

5 Y0 O* O+ @! j; W) v( e  N; o, C
7 m1 ^0 u' w9 U% C" ~set honest-service 0
- G% p, j% O0 q6 n
( d$ e8 T, g. E# Q: Q
set unhonest-service 0
, w4 j5 k. M" K% j5 [
+ O# d, |; T; W6 |# O- s
set oscillation 0

) e; Z+ x  M2 }7 g+ e
$ r1 T8 G  Z2 g% w) X) ]set rand-dynamic 0
/ m, p: p' f5 `, L$ `
end
# R) G& O$ ]  E+ y9 P
7 f" e' A1 n5 m0 [! Gto setup-turtles 5 }6 [$ ~) f5 |' `  N' K/ h2 X
set shape "person"
3 T6 [) \1 R; q) i7 ~$ |setxy random-xcor random-ycor
) e9 v; O$ R; D6 Xset trade-record-one []* Y- a9 |$ H' U& G
3 B0 s7 @7 X- S8 g8 _( Z* l
set trade-record-all n-values people [(list (? + 1) 0 0)]
. D: E4 W, L9 ^6 u
, A, j$ S% K( l8 f9 F7 Z, z4 j
set trade-record-current []
; Z) C( `2 I2 q( Cset credibility-receive []: f& r0 }7 {8 @8 r+ p
set local-reputation 0.5& c  `8 B2 m# Q# {
set neighbor-total 0
1 p- L; v4 }" B, x) fset trade-times-total 0
8 u1 ]) x- X0 `. i2 o) b$ wset trade-money-total 0
' E, O5 I/ h  y3 W/ j3 g0 @3 U: u: jset customer nobody
1 h9 E3 B, E9 m* hset credibility-all n-values people [creat-credibility]
' @) T9 P5 H! e' {) Eset credibility n-values people [-1]
) X7 U4 v3 A" O$ p: y5 tget-color
. }* w) [5 |' g$ b4 e+ p* k; m

9 h3 a0 k# q$ U" A) gend
" D% {' O  w/ H0 z0 k" S5 X4 L( Q4 {) f7 g9 ^8 r. Z: \9 {. T
to-report creat-credibility
* `% K9 k( n4 }3 c, P* t+ V# areport n-values people [0.5]" s# C. \1 A5 Q$ p1 @0 h
end% y6 |( I" T5 ^! J3 i+ J/ v

* h( m% j' U/ x9 P1 xto setup-plots
4 X4 m- T" E; `
- T. j! ]9 \( ]& }" v& E5 A1 wset xmax 30
, }8 a; y! F* h

/ v+ n, S/ x$ \% Y# I6 n2 Gset ymax 1.0

, O0 C! y- g$ [% F5 B# _
9 J8 \% T6 o/ r9 xclear-all-plots

5 ?& X: G! W3 \- D* [, [! J( o; Z4 l& {: p
setup-plot1

( Z$ x& |: _+ C" o
0 Z! R' g% V4 G4 A8 ~setup-plot2

4 H1 _5 j* b3 J& ?. w: C+ O
+ E) p9 F, O3 ?* Wsetup-plot3

. A& |8 g% Z5 S8 b# p0 wend
! }8 K, Q5 b% L2 `
; B- h% S0 Q, P9 u. [0 R$ h;;run time procedures) [6 s6 ~+ s8 x2 ?9 h: d$ S! p
- [2 a* v4 \# ^) i7 I/ {! j
to go+ Z! b6 e. R/ h

7 x& m4 q" X4 _  O7 H7 A" Zask turtles [do-business]

6 g% ?: U0 J! P( I# m8 a/ ]end
9 O- X9 C. f' Z4 \
' f% z  S- L( s  e& qto do-business ' }! F0 K& H- G7 |# {# {/ J
9 j3 v: d7 C$ ]9 ]6 D4 n

+ H: i$ C6 u+ R+ t$ Irt random 360

) v. X: S! ]% Q: a- I1 N; f1 a
- ?1 S& ]' t/ w. B* @3 ufd 1

* C5 Q( k5 t2 G$ }- u  S% K& [* G
0 \, q/ H: O: ^2 Q; Kifelse(other turtles-here != nobody)[

+ c5 c7 Q) j) c/ Q3 j( u) Q
! A$ ^% T, @; y9 v1 yset customer one-of other turtles-here

9 t  Z/ W7 `& J" s- g  k+ |1 B1 p& P3 N. o
;; set [customer] of customer myself

; Q# F, @# f  c$ O: X( _( o/ P+ H2 O$ N2 @2 k, P
set [trade-record-one] of self item (([who] of customer) - 1)9 h9 L6 s, H* x* A2 ^! h
[trade-record-all]of self" N0 l6 x4 S! G4 o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" ?( l1 O2 z& G
/ v! b, V% b6 X/ E* Y! [set [trade-record-one] of customer item (([who] of self) - 1)  Y- H; J; u+ z- X2 V% z
[trade-record-all]of customer

" K4 R  Z, I8 n3 a0 B# d9 \& d4 m! A. m8 F
set [trade-record-one-len] of self length [trade-record-one] of self
' q/ f3 c7 t6 G& ?

% G( |+ O& `" ~6 k+ K- Nset trade-record-current( list (timer) (random money-upper-limit))
$ o) T: J& X! B& L* S5 n+ _% M- E
+ ?  \( ]( h: W
ask self [do-trust]
: v" E! s! z( s$ N& N+ X/ ~7 y;;
先求ij的信任度- Y+ w, [- @0 f& e8 T5 w+ Y
. k% F4 e& @$ K5 {
if ([trust-ok] of self)
- ]2 d' Q) ]) ^1 h4 R+ R;;
根据ij的信任度来决定是否与j进行交易[  S1 o* I* ?- A) j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% ]: L1 N3 d1 P
0 [# |0 V% V. s. e
[
5 o3 c+ w; |* y; N. J8 n, N# k

- t- |, F' F8 [7 Ldo-trade

: o/ h) l9 M/ P2 j. \( R/ W3 e: y
update-credibility-ijl

, n+ M( b, }; D  s* [
5 v. j+ F- }: v; C2 Lupdate-credibility-list
, `0 N1 T/ i, G$ F

- N% V7 b- C+ D% B
1 E& a( n3 F+ e  [update-global-reputation-list
7 B% b, z( _1 N  ?5 t) l' p1 ~
+ c7 V4 K* {+ o) i" w
poll-class
- Y  M" i3 c" [  f! [# E2 B, M
! o4 t. V$ d1 e, V: N0 k  x# i5 w
get-color

& R+ x/ _/ ]& W
6 N5 e. p/ q# Y! R! l% b]]
4 T& z% ]  b0 X6 Z( p4 D, A) A
% g7 ]+ j9 E' ^4 O;;
如果所得的信任度满足条件,则进行交易* y% F6 q6 T' {1 o+ a
- R) \0 E* o% @7 i$ v
[

% f4 y+ b/ n- s, H/ v7 _6 ~
# h2 v' F! U! o3 V2 @/ A+ frt random 360
$ K3 s7 _1 _& [

+ J% A! u& H* t7 g, {& Y. _fd 1

0 j; [- y" |, Z: U8 ?
0 L* s% b  K, K( V]

1 V: {: o0 {3 B. O+ e$ C5 k8 J3 }; p
end

% J% E0 C- t. j( ~4 @5 d
. ~1 q9 M1 g$ ?0 j- fto do-trust 8 T. t( ]4 C; J" g) i7 O' m. D' R
set trust-ok False
$ q- b+ _/ H: C6 k8 y- S! t+ l& x) q; m/ R) v. q9 u: v

  I. e/ p. m# u7 V( ~! G6 C( elet max-trade-times 0& E( g$ l( p" M8 M- t9 k* @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! }! z8 d1 A$ |+ elet max-trade-money 0" ?' y7 G+ n) O) K: D, E! l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' H$ E3 Q) s" r% m6 ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. a4 X0 q8 h) F% d  \. z8 }. \9 A! l- l1 U* t- L5 S) e$ ]
- X- K9 c6 y, r* R" g8 _
get-global-proportion
% D; X  E1 E9 N3 z1 ylet trust-value. A4 `  ?" W, Q- O2 s
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)
( K! p6 z5 S% ~( B; Q2 T
if(trust-value > trade-trust-value)
2 Z& K% T# q8 h- H$ H- v. [[set trust-ok true]* k  W8 b$ B4 o9 x! `
end
0 [3 X7 D+ Z' w" ?1 C8 Z1 k! {
7 m# @( }/ F. w5 Dto get-global-proportion% h) V" W: |& I6 m! u, x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 N! c7 A3 v# x
[set global-proportion 0]$ [0 Q+ [3 Y& Y1 }+ d( n8 Z
[let i 07 H9 g" `/ ^, B& w* i
let sum-money 0
7 `  ~  o7 v# ewhile[ i < people]9 _8 `/ E0 E& t/ b) O
[1 N& j" q: S, n4 l2 p# T
if( length (item i" a! `6 H% o6 p% u  o
[trade-record-all] of customer) > 3 )

: N4 [1 R! \9 J# y0 ~[6 ^7 N' W. t& _& }" t$ A( _
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) E6 l# \2 H( c- ~0 Q
]* E% k5 q0 p! h6 I" W1 y2 C
]
* [7 Z* C  T+ c) a- M8 m( c& clet j 0% |2 S; C; |" L* x7 v/ ]0 R
let note 0' Q4 s& z  g0 m- r
while[ j < people]' |& a2 ]. N* `5 `! i2 s2 x5 g
[
6 G1 @/ M# ~. R3 c+ m- e# cif( length (item i
% |. P  ?# i% m[trade-record-all] of customer) > 3 )
3 E! F5 c5 b) {
[, [" x% e; j' U5 k* J2 f& y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 t- L; ^+ ^% y0 [4 Y, f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( Z8 D" {! S( x- W' w% T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ ]1 L5 F7 ~, d/ O5 _9 V
]; `6 _& A8 @# c
]
5 ^8 W9 Q, v" Xset global-proportion note
8 l7 F1 o& @6 A9 H  M1 E5 r]$ M; F6 G& r2 E# U* z
end( i$ r, z& [4 k0 k0 A

; c* B% F4 v8 d( J. m5 fto do-trade
! R6 @7 b6 K0 i/ t) g;;
这个过程实际上是给双方作出评价的过程+ U9 E: `8 C3 A" Z5 }2 f4 \- D+ S' C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- `" l  k# c9 ?2 x$ G3 l/ S( ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  @9 w) i7 A. y. Q1 z
set trade-record-current lput(timer) trade-record-current
+ p8 V% P* L9 I4 g& N' _' Z& |;;
评价时间. r% e% r  s/ ?; L. ^# O
ask myself [3 D! w% y4 m5 y8 A/ e+ x3 Y2 f
update-local-reputation
/ N7 b1 v4 \) _) h' Jset trade-record-current lput([local-reputation] of myself) trade-record-current
' E( \/ ~) E: d]
; K- N1 @* l; i1 t. dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ O1 ]6 ]$ i- E* H0 m( b* q;;
将此次交易的记录加入到trade-record-one$ o3 O) G2 o8 p9 ?5 \$ d+ L, O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& O* x6 I! D5 r8 x% ?
let note (item 2 trade-record-current )
4 X$ c6 i0 t/ L0 a- D# e9 n# oset trade-record-current, g- |$ n! Q! |6 I0 v. v# `( D& j
(replace-item 2 trade-record-current (item 3 trade-record-current))
. K; ]4 M1 D- Q) p+ t9 B4 M
set trade-record-current% s% X/ w+ @8 U$ Q6 l& a2 F% G
(replace-item 3 trade-record-current note)* f1 H( A+ z- O; I' b( W+ U

( x  |6 t& `8 t. _' b1 C

+ l1 B" A- E- m* }3 sask customer [! N1 r1 Q8 U% X$ K
update-local-reputation
6 i! d( _" _% q5 I1 g( q& Uset trade-record-current
5 W- y/ |; D+ c' Q+ I5 P* i' \& R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! V# Y1 @, h' o3 C
]+ w/ e& j' w6 @9 p+ h  ~

" E# t9 Y4 `, L
4 m/ ^: K; Z2 ?8 a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* L8 W9 o% d1 J* H4 g( u

, `; u( m4 m$ T, Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 ~0 w8 J0 T& H
;;
将此次交易的记录加入到customertrade-record-all
8 _5 i- j) F2 c7 b+ Y0 W1 P% E% zend8 G: d+ @) Z7 I% V

$ b6 n$ l1 d8 s# @to update-local-reputation
( q, P3 X% v2 r3 Nset [trade-record-one-len] of myself length [trade-record-one] of myself! h5 {' @8 x) |/ V$ @6 v3 [
1 V& P& y1 @& G. _) K2 A

( @# t( k% k5 ^4 ]/ M- I;;if [trade-record-one-len] of myself > 3

8 ?$ {5 l3 P" D1 u, x+ X* y$ ^update-neighbor-total
( h' `1 ^* X9 Z( M) v3 ~;;
更新邻居节点的数目,在此进行
/ h7 L. z7 z7 l6 o  Q8 Alet i 3& Q* s  N3 p6 y* d- A  t; L
let sum-time 0* \/ ]8 l$ T. a5 d/ I& P
while[i < [trade-record-one-len] of myself]
* k0 A& R  Y+ h# U[/ l& a0 j7 h6 v& D$ K; P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: c% I" B- B# y/ I6 F+ Oset i
! x4 Q  r1 N+ o2 v- n( i + 1)

. C% x( D" `; w) s]. v; ^& y; @( f. S
let j 32 @, Y$ s  `8 L2 T# Z5 C6 h
let sum-money 0/ F, ?; u9 I' B/ n, y6 l: i
while[j < [trade-record-one-len] of myself]
' U, _5 J9 N  T) {  l$ }[& i. T- H# ^; h9 F3 |9 Z
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)/ |' C  F: W. L- [
set j: |/ R; u3 P: x' Y5 F7 M
( j + 1)
' V# ?0 r3 y# s
]
" G) F) I5 ^3 Z+ c2 p& Z) S0 B" g  Vlet k 3
" n) x* |4 h/ J9 h+ P/ f9 d0 [1 A7 T8 zlet power 09 U' R3 D3 S. d% a3 n8 [
let local 0
3 C( b, y) [! vwhile [k <[trade-record-one-len] of myself]
/ P: M9 Q6 E7 S/ x+ R[
3 J7 Y' t  }4 c! i* Fset 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) 1 j$ D2 H& s3 k
set k (k + 1)) z9 Z# j+ h0 K6 U
]* D  ~7 ~& V% r5 k
set [local-reputation] of myself (local)
7 c$ _/ [: Y5 V2 aend7 V/ V3 Y- @3 p! K, V; T1 u
+ T) ?. ]0 V: p  I2 q: b. G# |
to update-neighbor-total( N; y% v  Q, ?8 C' g; x8 M
; Y, |  R) S3 I3 `1 B2 }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 }/ a1 E6 F+ v2 ]6 k8 r7 [
1 z6 [7 g- ?# |# _/ G

; X* r+ y- ^! D# q- K2 Gend
3 l9 @1 `3 R- f' i
+ ~# t2 D, z! V1 I; Zto update-credibility-ijl
, H7 v9 t! C% c8 }  d
2 O, ~4 I8 o$ j;;
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。
5 d" i* ?: D% h9 A# ]8 \* ilet l 0+ D( e* |3 N' G/ P# b% D
while[ l < people ]
. m# G  m, F$ o) X: d" |  ]+ _;;
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
4 @! G$ }( r' T1 P[5 Z8 |) d" D6 [! y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 X3 V- U2 U1 s( Q3 b* @1 F
if (trade-record-one-j-l-len > 3)
1 m! E3 V9 }+ s2 h8 S. b" l$ p( A" }[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
, n- t% v# z' b4 G, elet i 3) v0 h) b0 p# R
let sum-time 0
% i, ~/ L0 H! O1 Y+ N1 F% Y# @while[i < trade-record-one-len]
1 _# u" i0 s: l0 S3 |4 V[
6 I  o; z+ C$ u& Vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  s5 B. Q7 C# L( U' `set i: l! W- j* Z8 p" K4 j
( i + 1)
$ d7 ^2 U8 a8 S$ `: H' n! Z: p
]
8 j& P; p( a7 J+ T  wlet credibility-i-j-l 00 s5 W- }0 q7 Z$ C9 L0 s( p
;;i
评价(jjl的评价)+ C) u; M3 c: R5 n$ L
let j 34 R' m- I, ~' _& V
let k 4
' j6 V' r0 [" Ewhile[j < trade-record-one-len]
" _6 M" |& g8 K& ?+ Q* q7 J[' s; P3 e. }, \5 t. v
while [((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% c. T5 ~' y3 X/ }. S) v
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)
) h3 N6 r/ [: N6 Eset j
& Y+ p) ^9 E: j6 y% r( j + 1)
1 p7 H3 Y; D3 C* P4 L
]
% L9 A' f9 `) w- m/ ], C, rset [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 ))
$ E6 O( \0 t& Y6 G; \- V+ q- m" b4 k1 h  D6 O& W  f

: a" {' Z2 J: i! _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 H5 ^  ^5 b, t+ }* U2 ?
;;
及时更新il的评价质量的评价7 s- M2 ^& V+ n) p7 {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ _; j4 z8 `' o% z* I5 \; V
set l (l + 1)
1 K0 l! w5 z6 l; e3 d]
8 r' p* f7 L% v% N' E8 w: i1 mend
6 H" m/ e, d8 D% {0 p( X
. b; x4 v' r, H4 c) Eto update-credibility-list
+ ~- N6 {" k2 [let i 0- w7 R5 T; \" X5 P# h
while[i < people]. b% [+ u. c# p5 @' M
[' i/ Y4 b7 L- c. K
let j 0
! b: M6 ~0 L, o6 I, Klet note 0
# D7 _( N1 n& Vlet k 0
1 i7 h9 Z/ B! Y+ {8 H$ ?;;
计作出过评价的邻居节点的数目; k2 S" S. @1 S8 N
while[j < people]1 x1 M7 c% G/ E: L% F. N+ p2 T
[
9 A" z: M+ e# j  l; B5 Xif (item j( [credibility] of turtle (i + 1)) != -1)) y) F$ E, A; A% b% M* s
;;
判断是否给本turtle的评价质量做出过评价的节点! G  k1 k( X9 S. N$ P
[set note (note + item j ([credibility]of turtle (i + 1)))+ i: |& m0 |$ b! m8 v( v+ ]5 T
;;*(exp (-(people - 2)))/(people - 2))]
0 m3 ?; H/ W& N* [" m7 Z
set k (k + 1)
9 t4 }( z6 k# ]; J" ?) ?8 H]
6 U% c4 b4 ]3 P" W& [" V5 w; fset j (j + 1)
/ K6 z1 v0 x$ z7 r" W3 z  A7 R- Y]
  C( @4 o: @7 A% B# h/ Q6 c' aset note (note *(exp (- (1 / k)))/ k)3 x5 y# U. r8 C# X3 j# K
set credibility-list (replace-item i credibility-list note)
4 i" D- E1 A2 s5 Y$ Dset i (i + 1): T" h5 v, a$ @- `  K) r# B
]
# K6 S8 r8 H# C9 Q1 q+ [end
& }1 W' c) i6 Q5 s4 L8 p8 h) B& j& I1 k  |7 c" u
to update-global-reputation-list
. b3 r+ _# q* Y% [5 L; |1 Mlet j 0
; `: [# e0 |1 bwhile[j < people]
7 w$ w0 H/ X* M/ d[
. g. m, q- @) m' K2 m  wlet new 09 }2 n/ u3 b2 g% [$ X5 K5 {' r
;;
暂存新的一个全局声誉
3 a+ ?" v9 }# }let i 0  G( Z4 e- ^0 y( i& U
let sum-money 0
8 k. C* N" u' R; Alet credibility-money 0
: m  {8 D7 J' jwhile [i < people]/ C( G# t) D4 N/ N6 u& B$ X
[! A3 _$ ]5 p) \9 u( g/ P1 x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 I& x& Q0 p$ T- F) a9 pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. |: g, K9 l. {. j5 O8 W& g/ Gset i (i + 1)
7 _; v" L% j; G# |* S6 \]0 v' w: \7 d0 I. y. L9 j! }
let k 01 ?. }1 L# F/ @# w0 K
let new1 0
0 C& k, {. F9 U( Swhile [k < people]
! q% `: F/ Y# \: J[+ ^# G" P2 E9 @' C8 K- N% w
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)
" R: q, q, ?) f8 Kset k (k + 1)  r2 ?% R. K" ?" Z
]
" D2 S% |) ]' Q* h: }0 vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& x- D$ L0 m. A* d, oset global-reputation-list (replace-item j global-reputation-list new)
" `; F% p$ L! x9 H* E1 wset j (j + 1)
/ h3 P/ _$ c! p$ i- y" e]; C9 f' V) z7 `$ s( f: n7 x
end6 k/ P1 N! V9 g5 H: A& H/ h! S

: H: g( l% z* E. ~8 |: t4 O% R. M& ^- ~3 M" k3 E
- {7 ]5 x$ o+ G+ J# q7 _$ ]
to get-color. }) x  r/ g" d  v1 J
3 I3 `; ?* ?8 [/ f, J; x: k5 J; E
set color blue

* o1 j: D3 n6 A& k2 F+ X% N( @, c% Fend
% S  n9 F1 F1 R; @1 D- \) O
6 K5 E9 a5 K4 u6 jto poll-class$ t5 \) R% g3 O. {1 }8 B
end
4 O) F9 q0 ?; M( f2 ~
: j: {+ H. o9 [% k6 ito setup-plot11 p1 J6 M" i6 _' K. R1 k8 `* J6 g
8 V5 x1 c- [# F& w* @8 ]" h
set-current-plot "Trends-of-Local-reputation"

- n5 Q6 y' }# w3 u6 N1 n; m1 `7 P( T2 U- L  i: T; c* a
set-plot-x-range 0 xmax
' X4 V3 ^6 v; G0 R; O+ ]& Q

/ ?$ X+ t, N" m  Wset-plot-y-range 0.0 ymax

! K3 m& ?: v1 J8 K4 pend
5 _' l$ H8 @! ~* G( `! v
2 ~0 v: S8 i2 }to setup-plot2
. N: I4 L9 o# X* u1 `1 Z& @
& t2 i' W2 q% ?; C" o  G) F8 G5 Mset-current-plot "Trends-of-global-reputation"

4 L! Y5 L, L, N5 U2 y3 i; B4 }& v( x' q; c6 |/ b
set-plot-x-range 0 xmax

* W, p5 P5 A4 z& f4 A: d1 ]" L1 i% b
set-plot-y-range 0.0 ymax
# y, [7 ~, `2 R: m  R! j0 m; \
end
& P+ P; f# t7 o& P1 m- O! o2 B  B1 R9 _0 V5 Q1 b' P
to setup-plot3
" Y7 Y) p2 \3 K# C
7 M' L) I) ^! u$ t1 M1 cset-current-plot "Trends-of-credibility"

) d8 c  n$ `0 q) @, O. H
. v( u: G. V" \8 l8 i6 o* }$ ?set-plot-x-range 0 xmax

) D7 T+ I  T' P/ @. K. Y* S7 \6 y) E. x0 u. ~$ M- i* h8 f
set-plot-y-range 0.0 ymax

8 G' V+ z: n8 l4 \: s8 }4 Lend
/ V' H7 @* ^- o) d- ~- x# e8 o
' B8 ~5 g. i# A5 H6 ]2 |( E+ @to do-plots7 F+ ~  L& d: F3 f! g- H3 A5 K8 b
set-current-plot "Trends-of-Local-reputation"  D4 d0 M! s9 s8 F8 \- n7 M! W
set-current-plot-pen "Honest service"
6 |: V9 D4 k' \1 O5 k  M3 mend
# Y* D9 i* G7 L' ~) p# D; `5 }5 q, h: _# d: s% ^8 w
[ 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.
8 h- Q% o1 x! L: T1 s% ?4 g
; {  d, G. V" v$ e8 Y6 S- z7 d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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