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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:
3 \0 \' l8 t- yto do-business
8 ~) d: B5 a( R/ o" p rt random 3600 q+ u+ }& F3 F6 J. g$ N) ?& ~
fd 1
) D# S, I: L: o$ @3 P+ S ifelse(other turtles-here != nobody)[, X. F& @* Q1 P; b
   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 O, m* B: d+ ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* k. }+ V9 {+ _0 L, z9 P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) F' p7 `) T1 t( n; D7 W   set [trade-record-one-len] of self length [trade-record-one] of self
1 R4 O. K" X' P) M$ f   set trade-record-current( list (timer) (random money-upper-limit))
$ G0 G4 z: c0 n, e
7 A" d3 O9 _; Z6 T' w  w2 Y: s! p问题的提示如下:0 ^  D) f8 \% C- O
/ j' s$ p9 W$ [0 [( s- W3 }6 j2 e
error while turtle 50 running OF in procedure DO-BUSINESS& w0 k: N/ H2 _& T  k' u
  called by procedure GO7 H! D/ C7 X8 r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ C7 S/ i  x6 C- ~/ w  n; z
(halted running of go)* B! f' V, P1 ?( d% ?

% H/ \9 \4 n* `: m3 s0 \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~~
+ l6 b, G3 {7 T! O7 J0 o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3 Z$ Q0 P; E# {& g
globals[
. v1 x; t7 d& ~9 D1 N5 {$ z2 J4 Cxmax
5 v* l/ x; D! T' Bymax
. ?' t+ R  I- w6 I; P3 ^global-reputation-list3 i- @, s# i% {; s# K
4 \6 I8 A# ?6 G! x0 J
;;
每一个turtle的全局声誉都存在此LIST; L3 i/ R7 A1 {$ u$ u' `
credibility-list0 X! C) h4 O- ^( Z! ]
;;
每一个turtle的评价可信度6 S  c. b$ U, f* H$ k# U
honest-service
% T- {8 @% f& B' Kunhonest-service  q. E# M) R0 s
oscillation$ f8 V2 t5 }4 ?) ^; y2 o! d
rand-dynamic6 o- Z# n, Y. @) l# P) x
]
. Q$ O  ^+ @6 J3 ~( d
6 v9 @% p2 U( M1 I! yturtles-own[8 D  o' X; ?: B
trade-record-all
1 D2 S+ A' W  Y* V; `6 C;;a list of lists,
trade-record-one组成4 F" ?% j- {. [. G5 V9 @
trade-record-one& l) ~: i! B- i: o1 U' Z/ d
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 Q: g) k0 o& I4 J# i9 b# S. r, |: z5 U" {$ i- ?
;;[
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]]
" D+ Y3 a& C9 gtrade-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]2 O* w! m7 K" j
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
. S5 l+ U1 J1 W/ [! U6 p8 rneighbor-total
* z1 n! W* k' V  }, q& e;;
记录该turtle的邻居节点的数目* |8 W4 }( n5 D( s- D
trade-time
7 A, K8 ]0 ^. p  y;;
当前发生交易的turtle的交易时间
' d8 F8 R% _7 ~. Z+ r" M/ W+ Sappraise-give6 \7 [  ^1 I! ^* Y
;;
当前发生交易时给出的评价
. [2 Q( H% O4 F( z, F* _appraise-receive
& N1 d+ Q8 f" _8 {) |" B  X% k5 u;;
当前发生交易时收到的评价
% E- a* T* F1 s' n: U  ?( jappraise-time
1 E1 P, E( A" p# @) J;;
当前发生交易时的评价时间8 L5 o4 F$ R1 Y. Z) Z4 Q. I# C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 E2 q. P' f0 z# H9 B
trade-times-total
2 [5 P  S; R2 B8 d- L& E;;
与当前turtle的交易总次数
' _6 B& c, B9 e! p: Gtrade-money-total4 O; }9 c2 M8 ^+ b6 {1 D$ t
;;
与当前turtle的交易总金额
" N1 K3 c% n% ~) }  elocal-reputation* p# K9 e: e8 Y% D- v
global-reputation& Z5 [6 R7 a. H5 \7 k- ~/ ^
credibility
2 L; N, |/ J, U9 k: m! m;;
评价可信度,每次交易后都需要更新# V: Y! Y7 O; h
credibility-all
! Y0 [8 E* p! d2 v* ]2 };;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( }. ~: n- n! j/ m1 T, ?) }

1 k: e& M" O- {# Q  z;;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
1 a. }- Z, L+ x8 r- gcredibility-one
. }8 f$ Q4 u! ?6 H% r4 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$ Y. q( a" o; d7 y  J
global-proportion- a. b) g4 k3 N" a3 L: j
customer& \; ]- f1 H! g5 i" Z6 [
customer-no
3 R' U+ Q7 k) @trust-ok' ]. ~) q+ I- V) f
trade-record-one-len;;trade-record-one的长度
% {, H0 W8 B) S2 d& V5 u) `]
# G* M9 C5 Y7 v8 Z1 C" U9 A0 I0 `6 ~9 y' s
;;setup procedure9 y5 d6 A' I9 S" `9 P
* Z" \+ \1 c) c  G" r+ ^
to setup
: G; @, t2 N* H* A
  f4 ]( A( f6 u+ Fca

" J2 ?$ J' a, y. F" J+ T" h0 {2 j: A0 J
initialize-settings

8 j! s. D* Z4 h- M- s) Y+ T4 b2 C* k$ B5 ^+ H# ?) o
crt people [setup-turtles]

& v1 n, X0 j9 \8 t- j- r$ [7 ~1 I% @1 Y/ C; ?
reset-timer

# T; ]! P& S! m5 J. }6 O) k/ C# e; K, S
poll-class
/ _( K2 k2 Q$ q1 n

+ v. |7 Y& t: t# L( W# Ssetup-plots

) M! s4 I2 E8 L! y; D+ S
4 i& p: q- l! t' q0 Hdo-plots

" ~. e! \7 ~# b9 cend
( C6 O* }9 [+ v/ Z) T& h/ |' k7 h. f% l. I, z
to initialize-settings1 e. e; C$ n. w+ a; s

2 b+ g" v: Z& j$ T! s# g& Q6 fset global-reputation-list []
8 [' M" ]& {/ Y: F
5 V6 \* j: G6 u
set credibility-list n-values people [0.5]

% C1 H* C8 R! \: _1 M: h( w0 K% k5 H5 J: z* g. G
set honest-service 0

; c, I: O; f! V. ?, [+ l* A" x; O, Z$ N5 k" f% A6 m; D
set unhonest-service 0
9 J4 h# f$ o  Z
% w2 s+ `( @" x* N6 Y0 }
set oscillation 0
( e" I7 v) z3 g
* z% e. A$ r( c$ T# M
set rand-dynamic 0

& Q0 Q' Z& ^: k' T$ Kend) F& l9 O! F% u, s, D
( ?# \9 V% ]# K* @5 y8 p# q
to setup-turtles & ~2 S: K2 E/ @4 Y  j. v
set shape "person"9 y% j9 q5 K8 T( A
setxy random-xcor random-ycor
9 ^9 V; l. C; N$ y! Y; Iset trade-record-one []( G$ r  [5 b  c

( }: ^/ c, y8 V7 Q. m, ]" |set trade-record-all n-values people [(list (? + 1) 0 0)]
5 k( Q9 p% x% L5 ]3 `/ E8 G* y
5 s1 \& J' C# u; t/ U7 Y
set trade-record-current []
. _6 v, g3 l: N) f5 \set credibility-receive []" r9 x& Y. b0 m
set local-reputation 0.5- U5 h# ]& M. I: V  t. N
set neighbor-total 0  I, [( |& L! U" H8 z: a: p
set trade-times-total 0( r! U, B8 w- u
set trade-money-total 0
2 s; l9 ]8 \% ?- uset customer nobody
7 t" ~( E+ W4 z# R7 j. s. Aset credibility-all n-values people [creat-credibility]
' [$ D9 T( W1 E; i, Gset credibility n-values people [-1]
5 @% B* `0 o" W$ d" L. qget-color
; I# |1 ]: R6 x' v2 _, q# [& ?2 Q, R

# d8 T1 m, x4 x7 I  s$ Z$ Eend, m' t$ A. h& ]0 `) w- y' n3 n

: e* z9 W, r5 x' R, @0 ?9 mto-report creat-credibility0 U6 T9 U4 B# J% @+ A# N# b3 Z+ B6 H
report n-values people [0.5]
% p$ b% B9 t2 H( U( r1 Jend
8 l# Y  {9 z  t* M0 D+ V+ j, x
' c8 a8 @# V: vto setup-plots
$ {3 G, ~3 Q5 |/ C' J
. w' e1 _% x; @) w3 pset xmax 30
* v( B: m0 v* G9 N$ N. c3 `6 H
% C  k  c2 d9 T4 S
set ymax 1.0

- Y, L, V7 `$ G: A( R( ~" L2 ^4 G0 K- b. \
clear-all-plots

  c% x( G, d' [+ i3 U. X& P4 K
! ?$ b5 W' s, }" f! C$ }  x  [setup-plot1

- _; S$ B8 D7 F3 y! {) B/ s- ^  X# u3 c" z2 r0 \; S+ k
setup-plot2
, `+ s7 E& @2 A" z& K5 R

( ^; E# [, I8 D9 `5 S- d' Qsetup-plot3

1 a$ o0 F7 z+ H1 eend
4 Q' F( m8 f1 H3 ^$ Q( j" d2 K: x+ p6 c. f) O' K: _1 X
;;run time procedures
( P0 j* m/ R; ~5 ?6 |9 I7 r
" I/ l' w" _6 Wto go$ l! Z- d: M7 x; t# L* N/ I

7 N$ ~6 W/ D" s1 N% Mask turtles [do-business]
' M6 @) W  H) X! l- [7 J
end9 i% D: U: p; E7 v& Y# a5 ^2 B. R5 [% ~
% y- u* ]- }4 |& {
to do-business - r1 t2 h, G' X

2 O& H1 H* Y! d
  ^; j+ k+ r: _) Jrt random 360
/ |: D4 X/ O6 J& i& ]% @* p6 K

) w3 q' J" ]9 Bfd 1
* `. X9 C: i7 P) i( q( l3 Z
' Y$ \- F0 i# n
ifelse(other turtles-here != nobody)[
$ @1 F2 T. W+ b: i0 G: c, }7 ^. k2 v4 U

, z2 Y4 C0 ~  v9 c4 D# s  n$ m7 b) uset customer one-of other turtles-here

" Y# t8 J4 c, n" o2 A. r; R
# z; z. B7 y5 z" H9 Z;; set [customer] of customer myself

- \& ?' |) w8 K. K
& e, U7 c7 T, z% Nset [trade-record-one] of self item (([who] of customer) - 1)2 U" \2 F. t/ G0 [
[trade-record-all]of self5 l" _+ u' b) p  l5 m" [: m( G, U9 }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, W7 S2 S  H2 n2 c1 `& z
# E2 n0 O" f- [( j8 ?5 e' m
set [trade-record-one] of customer item (([who] of self) - 1)
( ~% N; V. j. d[trade-record-all]of customer

7 i8 `3 o- ^& j3 t+ _, [' T
8 }8 _; V, e% I" b* W' y8 M. ~set [trade-record-one-len] of self length [trade-record-one] of self

. b0 Z. N$ @, k* L- Q5 ~4 v1 ^- b8 t0 B9 s6 e- [
set trade-record-current( list (timer) (random money-upper-limit))

: q2 ^$ M3 I1 x: P9 k" G7 F9 l0 X1 J" b3 n8 V+ Z
ask self [do-trust]) ^2 f  h3 q/ ?/ D
;;
先求ij的信任度
4 i% r9 r' U2 P5 V1 h# B; _' P3 {. P8 P- }1 O) S# a
if ([trust-ok] of self)* t3 P# \+ X/ G% i
;;
根据ij的信任度来决定是否与j进行交易[
: {# m  K% ]2 r) A' O* p& wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! }: J- J4 f+ v* b  {9 L) X4 f; \- o! |: g6 V' w
[

2 ?* J% d+ G& v# c' h: s3 [& F3 j9 c1 g2 }5 m/ p
do-trade
$ B% l* Z( a' d

, N/ y7 k  @' F7 u1 ^/ m- k" dupdate-credibility-ijl
( v) r. Q0 ~$ O  A0 t2 S
& Y: n5 c+ s$ F6 I
update-credibility-list
3 n. v3 i% _' B! r, {, h5 D

" R8 q% `  K* f' \. n
) ?0 P; e2 X/ S& ?* `  F1 cupdate-global-reputation-list

1 B' K7 A3 j- h! a5 z8 `; @4 i: Z- o% I) ^& k& @
poll-class

4 O8 c" y( C# \7 {. @' {# l
% o1 B  Z2 [, H5 Y9 m+ lget-color
% s/ o8 G  Y" D( V2 E* o0 K
5 ~7 ?+ V" W4 j4 _
]], R* Z% ]0 B# S2 M* s$ x' e. u
; U! S# @0 I0 R, O! ?" L& l
;;
如果所得的信任度满足条件,则进行交易" @5 o9 N2 k/ f: O6 t3 G
2 c# I0 L3 ^- u3 q4 {; Q2 `
[

3 C7 T0 M2 I) k, B5 ^! q+ g; c! W5 x
: t6 F) E4 R+ u3 Y. b- i8 q) Ort random 360
2 A6 A& b$ r2 S( r
% Y7 h) j9 `9 T! x
fd 1

  D  n# x2 C6 o0 t) h1 e& ~% ^
! Q! ^; [" i9 ?. x, h; Z5 Q]

, B2 V8 H) j1 m# j; V/ P5 J8 P. a8 p. g0 D3 K; i0 z
end
5 s$ x1 m0 F) G( S

' Y2 l) [8 m( i2 p  D: v' fto do-trust 5 T: N+ K. ]& M  `" ~
set trust-ok False
7 M9 k6 e- `$ @5 Z0 O' e8 ]- M# l% f; C7 }! u% i5 Z: `- n5 c

7 E: o# i2 {" e; }- r( O% C, |let max-trade-times 0$ U# o! O/ n0 `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% z/ l; H" A. _7 P# jlet max-trade-money 0
) y5 H, C6 }: p. @# e/ y6 n# k5 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& g# B  V. u, Q" b3 h1 J  x, g" alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( X$ a/ ?0 M! e. X' [1 R, B
4 o) j& U1 m8 `/ m- l" T
4 a6 Z5 \; t/ X# _8 j% k. T
get-global-proportion
! y4 R; Q6 _  [- I" x) {( ^let trust-value0 j; V$ A; T0 X5 I: a
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)
- b' r; K2 N' F
if(trust-value > trade-trust-value)
7 D5 e$ f* k) ]5 g" T[set trust-ok true]
7 ]' [. n: B8 j) Bend: m5 x: ]. ]7 v, R# J& Y$ A! X; ]! Y

; j/ T+ H( [8 f+ {) Ito get-global-proportion
- O7 D1 {5 z. Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 b- L: m0 d" o) r' ^[set global-proportion 0]
& `. i, P, g0 M[let i 02 g. H( P0 t! Q( n! _
let sum-money 0% R7 t$ P/ m( ]% d9 Y1 {1 v( [
while[ i < people]
2 Y: Q  j: h; R  O# }/ C[8 q' M6 }& B" z+ E2 P! Q
if( length (item i
! T6 f9 Z- a( \4 q; L' G. A. o" T[trade-record-all] of customer) > 3 )

9 e+ |5 C' ?# ?[5 F$ y. _; T* x% D
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% W& H  F1 m: y]: I* N. Y+ R# t0 [- T* ?
]
9 W) c1 G( D3 C6 b  a* L! hlet j 0
3 {6 _; n! q. a- s0 [let note 0& ~& i# y8 T0 n. U+ ]
while[ j < people]
) S. r( `0 _# l9 T4 C[' }5 j3 q9 d  {6 E4 X" d
if( length (item i
% r1 x+ e( U5 z( D8 e" T6 ][trade-record-all] of customer) > 3 )
# t! m. ?  s' u% e( R0 {  e
[
2 Q& O! r& t7 K7 j1 r+ oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); t2 L6 Z2 A  o# N) M
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 T2 i5 b" V& f! e7 i* O$ X, e2 |
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; Y& a5 c, C" R3 ?$ Q" u6 J% h
]# E/ x/ s* m! {. C' t: {) L
]
) Q/ B9 H3 q! h" ?set global-proportion note) z0 R8 E9 R& i& Q6 E5 c
]9 I+ D, o. q) e# ^) K/ G
end+ Z4 O$ Z( s4 m/ |! W

% r4 h( m" e: jto do-trade' {+ z0 |( v% G/ t
;;
这个过程实际上是给双方作出评价的过程
3 Q. V2 ]* L5 _, i% P5 ~# Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ Y$ Z$ |4 Q" {3 x1 O# `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 {: Z9 A9 \5 D" E8 qset trade-record-current lput(timer) trade-record-current: H- s  }) i* s+ J8 x. ~2 Q1 }
;;
评价时间
- [0 C* H, K8 y/ Pask myself [, @% P2 L! `- w& v
update-local-reputation
/ _$ k0 X) O+ G2 jset trade-record-current lput([local-reputation] of myself) trade-record-current
8 ]) U( ]. V- D( z* R]
$ P  q+ W9 v; m1 I. F; jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& O/ w  V% ^5 }, A;;
将此次交易的记录加入到trade-record-one/ i) A8 c1 N& y+ e$ H6 s
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! W. I4 B) ]. I, k8 N
let note (item 2 trade-record-current )9 H0 K% v$ O; Q4 w3 X8 f7 B# A
set trade-record-current
; x) t" T# _' r+ o# Q( O' I(replace-item 2 trade-record-current (item 3 trade-record-current))
& R3 [- ]; C* V( D$ I
set trade-record-current7 E, t  a% J* B6 H
(replace-item 3 trade-record-current note)4 a: m. L" x" I: g+ c  O6 K
, A- `* Z, ?! r' W# {

6 f: @( K( F+ u- ~6 U( Kask customer [
8 k$ A( Q2 E0 ~' J. i8 Wupdate-local-reputation. `; \5 q3 l" k; T1 Y
set trade-record-current
- g0 T, [. W0 J: D3 Y  N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- \/ b6 }) ^. U' \# W]& `  q; ~0 b6 p/ U4 x) |) O9 Y

& L6 z5 @5 E& e: z* e$ W; U
  H$ Y+ h" c: |
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 r7 h/ }, R2 H1 R; e7 G

' h- {3 m! a6 i- rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: i$ P* H* X/ g8 s4 U3 J# c;;
将此次交易的记录加入到customertrade-record-all, |% m  ~% _" t- X0 v
end4 W. i/ F+ x( ^9 ?: I) y

" q5 d; p" X0 \+ Eto update-local-reputation
  Q( a6 G8 B9 yset [trade-record-one-len] of myself length [trade-record-one] of myself- z) g  [1 ], u
% h9 w3 x) W# |; B' Q4 n( z
1 [9 z( P# g: ?; J& d$ Q. x
;;if [trade-record-one-len] of myself > 3

3 _2 p3 z# z, j! eupdate-neighbor-total
' b0 m: l$ r* q;;
更新邻居节点的数目,在此进行/ ]6 L! e  d0 Y% ^  f9 y' k
let i 3# I8 u6 V+ q5 q, U/ \
let sum-time 0
8 o! `) }3 }% F4 S& vwhile[i < [trade-record-one-len] of myself]2 d+ `' Z. K4 Y$ G6 Q, G& b% z
[3 L# H# P) d4 Q# P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) c  _7 b& V$ _9 K9 E/ D; dset i
8 [  s0 ~8 ^+ J4 |( i + 1)
  N) B( j5 e7 e' e4 F, {
]* B# J' Y3 t) m. A1 H% N
let j 36 N; G  c. P9 }2 }5 ?" g
let sum-money 0
. I$ J4 ]2 d/ l) b# W& z4 D0 P% Fwhile[j < [trade-record-one-len] of myself]5 d4 q0 \8 t) b+ {0 M" x0 k
[5 M: S, _! V$ h# }9 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)
( P" S. K  z% Q0 t: r6 s7 oset j
6 C! a2 d6 Z4 [0 o) ^( I( j + 1)

! b0 S: Q% G+ {. B5 ]) ]]# G6 d, ?8 e( j
let k 3" p6 Z9 r0 h, k# _# `# [& x
let power 0, k' |" m. a4 a: \- T
let local 0
, ?7 b& ]' m) U( Q# rwhile [k <[trade-record-one-len] of myself]
( J) u" T* J( @8 X. Q; k: b5 g[
$ t8 v4 o" x9 a' L1 F8 S  f4 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) 4 }8 H. w% Q5 C; ^6 b
set k (k + 1)
  n! \8 M) |' J/ g]3 e1 v( U- |: B! ]! Z
set [local-reputation] of myself (local)# N# h# L( {/ k. j7 S+ ~
end( Z( O' l8 t' H7 f" ^

2 P  z3 y9 M6 n4 g) M  z$ Xto update-neighbor-total
( n5 Q" u2 R8 j8 W: K- a+ ]' I- N, M5 d+ I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) u' m2 Y* [( Y9 L; x6 M
( p( p' P+ G, [5 b  c4 [

0 V3 p6 b2 T, Z& u) Pend, v* L& q! R- E, q" [* q# [# k
+ v: _/ ]6 j6 \. L6 l
to update-credibility-ijl 5 K/ s5 A* _1 x, L5 q# b0 c' @& H

' g; g! s7 R$ A. Z0 ?;;
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 i+ m1 r4 y% H# B* P9 M6 o
let l 0
0 q+ F) O  [$ h" C8 P; Gwhile[ l < people ]
2 M9 X3 g" U+ u/ o; B) L; @;;
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% L/ ]9 y9 O) K* t/ M- l
[
; A" A: D4 {8 q) m& Klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 p; y6 `$ p& G
if (trade-record-one-j-l-len > 3)
: U* L. S* X, a) R4 N5 p& z1 S: }[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-one2 }7 t% @# W" E( {% A; }3 s2 E
let i 3$ I% ^- a' m/ P3 x% i% w
let sum-time 0
! V! l  f6 R  Owhile[i < trade-record-one-len]
$ L$ j( E) v7 S6 ^  M[
& `4 T* b) I1 }+ B5 t" C0 g, \5 `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 n$ T" j" n/ w1 L  z- n. K9 ]
set i. t. Z5 ~# _( v7 R* L6 f
( i + 1)

* `3 [; e# G/ b* R' U5 k]
& G, g2 _& c6 ^' F3 a- }) Elet credibility-i-j-l 0+ b: ~4 }/ b, S/ U
;;i
评价(jjl的评价)
( |7 c0 V- x8 Z7 @% h* y, Slet j 3
  w( V, g# ~, k. G1 G* Llet k 4; i- A- d' l# ^8 t
while[j < trade-record-one-len]
! C0 Y; n2 p8 O  c/ p) \[6 Q( K6 H# a  d0 j
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
; R- N- `% R3 ~- ]  N6 qset 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)% U, `" {! K  ^, m; y( j. l) a
set j
+ z! [  Z9 u3 G6 Z7 B1 _( j + 1)

$ e  v; @* H2 R5 x+ c]
0 c' y  {3 y0 }0 ?- S; aset [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 ))4 y$ h- Y$ m- h" K% Z; Y# L! b

" d- ?1 A2 M$ d+ T) K: w2 ]

: G- m+ F6 r& Z; Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ P, w  I0 U" ?9 n2 R, };;
及时更新il的评价质量的评价
1 o8 r5 ^9 _' Y3 @. K) |- Qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ t, Q4 C* U  G! k. D8 F" |set l (l + 1)- c. \* O1 X; L9 S
]/ f- W  j/ }; l* C  `) E4 U
end8 R" Z) i& w2 s, i
% P1 a* T! e' o6 R' l+ s( g$ z" B
to update-credibility-list
8 ]2 m. r6 G: K( ], N" F5 @let i 0
& t9 p* k* t' E/ Wwhile[i < people]: r, Y( _+ F* u/ ^* W& R& H8 w
[% y4 ~( u) l& A, Y
let j 0
" }- }4 E& f7 u+ Blet note 0
! r9 A# \( F7 _6 j/ [. Plet k 0
% {5 b4 {( q- J$ {% A3 i;;
计作出过评价的邻居节点的数目
1 l/ p& t  N8 ?6 }9 ?* twhile[j < people]9 z+ i0 t  B/ E8 ^3 Y
[
9 v0 Z  g2 d+ C9 I2 q/ |if (item j( [credibility] of turtle (i + 1)) != -1)
  Y9 Y: H/ V1 @! `/ ]# z;;
判断是否给本turtle的评价质量做出过评价的节点
% r5 b/ F, }; |" }: d  I5 N) m0 Q[set note (note + item j ([credibility]of turtle (i + 1)))
4 R. }+ w$ Z0 \% k4 d3 S. T; v;;*(exp (-(people - 2)))/(people - 2))]

- M; [: H( q4 x6 r" D  h! K% kset k (k + 1)
6 R: t+ X+ a# X5 e0 U9 U% c]
& j) z. {& H& f: m0 q) kset j (j + 1)
8 P8 R5 S% `2 M. x1 Y; E]. W# u& m2 m9 z: F  R
set note (note *(exp (- (1 / k)))/ k)
' {/ ~& o! U7 q$ j- Gset credibility-list (replace-item i credibility-list note)
( N$ R( n) U9 j4 nset i (i + 1)
" ^" T) {- E6 f4 [; j]& H  F% e2 B  a3 r. a+ C; ]  O+ l
end& E! n6 a+ T/ \$ P) h% O4 E

0 C! Y5 i7 j$ M7 l) p! Bto update-global-reputation-list
, f* f  A5 ]6 v) Jlet j 0
) M  d) y1 l* uwhile[j < people]/ x8 R  Q1 D7 l& B% F1 Q
[) [8 U  f, F0 F% |% K( C& A7 [  Y' S
let new 0  B6 G# g* e  s6 N7 K
;;
暂存新的一个全局声誉6 \) h! k$ G/ C6 O5 r
let i 0
- M( N0 J& X2 Y) y. t: `1 ?let sum-money 00 g) Z" T+ R7 x6 W  V
let credibility-money 0
7 H9 G" y+ ~9 G! d9 R  x) Vwhile [i < people]4 r$ X$ B) t2 |4 u3 G
[3 \* \& z& R* V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  U; ~* t; m9 z2 R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ H2 N, ?* b6 ]5 @( N* R+ Z
set i (i + 1)
) L9 Z# }' v) @9 w5 s]
% ?$ K9 Q2 c# h& F7 m$ tlet k 06 S& Q& f: S8 u
let new1 0
1 d% [# J3 q6 jwhile [k < people]
) n* k2 p; Z4 C, y, K, O% H9 o[
. F9 n+ i* C& X! \1 O* ?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)3 z/ q) U) F) R1 C/ O5 e) B
set k (k + 1)
: D4 v' W/ q7 u1 [4 C5 ~) s' h- l1 u]. k- ~- v- n) u% k( z. I- D1 o* Y3 V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! y; k8 E' c, I& g0 H3 o6 V' L
set global-reputation-list (replace-item j global-reputation-list new)
- p8 r$ X: I- b8 J9 L+ zset j (j + 1)  r- K4 l2 |; l
]
! e9 F' p6 @  M- v* Dend
: c6 P; X' Q* Z0 K
3 V: m; P5 ~- Y9 p: n$ U
; |3 K# Q% J5 K* a/ b4 V
5 i" c- o+ g5 A. A7 v. K# Rto get-color
% v( w* D3 V$ j" ?' J' W: ?5 R; l1 z% i, Z5 _
set color blue
8 V- _5 r+ I% a5 b  T
end
. K( B) }% R% I0 M
* _) v7 y( u, V3 Fto poll-class( Q/ G$ [" U0 A" ?! W6 W% O4 S* W7 a
end
7 h1 m5 \: S' m* B0 ~) B8 T/ l2 G0 T3 R+ B# h5 ]; }" f& Q3 T
to setup-plot1  ?, [0 H8 v! ]0 l% n. l* E. W8 R- j5 o

$ ]8 z( s0 v- s  g' H' [; oset-current-plot "Trends-of-Local-reputation"
% K1 ~: [3 O+ {2 i; h3 e' h

( r1 Z+ T, }# x6 E4 r3 Yset-plot-x-range 0 xmax

0 R& ~* a% \9 \; ]6 o: R8 d. \( x, v1 J7 s. d& \
set-plot-y-range 0.0 ymax
4 L6 m, s1 I" s, ~' B
end
5 j" {; H5 ]1 D/ H9 M. |
2 y" J- }* g' X  ?6 K8 W6 ?to setup-plot2
' K1 h2 V0 v, q2 z7 D7 C6 t, }# T$ a/ v( w6 v4 s( \
set-current-plot "Trends-of-global-reputation"

8 ~+ S8 D* i* p% G! [5 ~, _" W% h& M9 O
set-plot-x-range 0 xmax
5 i; A. p' i" V) i; K
1 c. C0 P) D( Y- z
set-plot-y-range 0.0 ymax

! ^. X" Z8 ~0 I/ n; A. Q, V8 k0 Zend' j4 v2 Q" g" \5 S4 q
5 h& `4 ~& Y, \  D) o
to setup-plot3
+ Q* R8 p7 F3 g0 ?, y7 `# |2 Q
- t; k) ]7 ?$ C1 T7 q& \" wset-current-plot "Trends-of-credibility"

, n) C, k/ X2 Z' W2 k
* K' _0 x) U* T6 Nset-plot-x-range 0 xmax
/ c0 _* q2 }: d" T: |% b3 L
! b; k, N* e' f/ |( R% e
set-plot-y-range 0.0 ymax

& X) Q7 D0 ~& Pend
4 O8 P$ ]9 d1 a" \& S: _
# W5 l9 m9 Y& L2 V8 o0 E/ Mto do-plots
& Z3 W" |/ x* Vset-current-plot "Trends-of-Local-reputation"* t8 T% V" ^( M0 c
set-current-plot-pen "Honest service"
9 e4 u6 O8 l4 j0 O# k& aend- f( p" h. |# `. f% D" L& q9 ]
2 h' i2 m& n: k8 V- R
[ 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.2 d1 L6 Y: M$ d6 H

  ]3 ^6 T! g* i! z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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