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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:% B: l! @0 L8 e2 c6 S
to do-business $ H# ?2 @* z* t2 q& x+ b: ?
rt random 360
' l; L1 e6 v+ T6 [! R$ m6 B% L fd 1
5 s" x6 Y% K3 v! b- l ifelse(other turtles-here != nobody)[
# P" j8 F( k. F5 V( S6 v+ x   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.
* V" s$ M' e) s/ u5 l  l# _   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' P- q1 S" Z/ g7 _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ N* ]5 u, j# W5 H4 J8 Z" F   set [trade-record-one-len] of self length [trade-record-one] of self
$ {! `- A+ H0 c: [7 q   set trade-record-current( list (timer) (random money-upper-limit))
" j6 |/ F: v1 Y) D9 }8 s7 N! e
+ X( m; h& R8 ]2 ]; ?6 l问题的提示如下:
/ ?& ^  O5 y  d/ ^! q5 j9 v9 a2 u
error while turtle 50 running OF in procedure DO-BUSINESS
. w1 U8 Z& e, S( N  called by procedure GO
9 k8 a) B" S: r  b  e/ zOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 R" b" b! T2 q7 u* O9 f
(halted running of go)' n' x$ L/ t4 z- k) X

3 W& C4 |; E- q0 `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~~
% {4 }/ |9 ]* q9 y2 T- X6 f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
' x$ v2 k: e2 A: ~3 ?globals[0 v2 y3 g+ q( J
xmax
# Q. ]8 W% e7 M9 `3 Uymax: m* W( m& G/ l! M$ h3 _; Y
global-reputation-list
$ _6 L/ r% w& d4 c3 P0 L" I& Q, j
;;
每一个turtle的全局声誉都存在此LIST; v4 C. s1 p! Y  h" Q
credibility-list5 u* x' T9 A8 ~) X" ?
;;
每一个turtle的评价可信度% y+ |9 }1 K" X# A9 |0 ^4 n2 |
honest-service
. x6 k3 D) o8 H6 [0 g4 B3 Tunhonest-service# l8 @$ a8 E- S6 s4 P& l) D
oscillation9 N5 C$ `5 _4 V  |
rand-dynamic+ u. {& `9 a  L3 O' @1 Z% o4 L2 W
]
! a6 W! V! P& v2 y
( n+ o5 U- t% L; S; C5 f! w5 Bturtles-own[
1 l+ o# \3 U- wtrade-record-all
- [$ D/ J6 i1 t' G/ o& ]% Q0 r;;a list of lists,
trade-record-one组成3 a, ?+ ^% A" h; K
trade-record-one
1 L1 t1 @6 f4 o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. w4 |/ o) W9 Q
( P) A, ~4 b  |0 I' Y; z  P, g2 ]
;;[
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]]1 B. ^2 `* U8 Q" m4 X6 W% K) I
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]
1 Y1 c1 H7 s# l4 f1 J) Ncredibility-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
% I& a$ W# y7 u: ^neighbor-total
3 P3 m9 U5 l7 L* @) P7 j& ?& ];;
记录该turtle的邻居节点的数目* g  [+ z2 c; u6 c# D& f% w
trade-time* I0 C& K" g. w, j! E
;;
当前发生交易的turtle的交易时间0 F* }, I. {# Y6 R& ]
appraise-give3 C1 h1 W( P6 Y9 D+ z
;;
当前发生交易时给出的评价1 r2 e8 l" A. |% j7 s. d9 \
appraise-receive
& @5 b7 a1 b" K  b  K+ s1 t& Z;;
当前发生交易时收到的评价/ G- t  Q3 M7 w  ?1 L% ^$ {: n9 ]
appraise-time! J) c7 k5 k, x& y) Q3 `
;;
当前发生交易时的评价时间+ }. w- D7 s: s1 [/ U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 m+ g3 K6 |7 @# U7 rtrade-times-total; ~7 Q6 ~- M# V7 b
;;
与当前turtle的交易总次数% S, C& V1 K0 Z2 j6 |
trade-money-total  ]% X# c; E$ H* \  ^4 x! t1 l: q' r; Y
;;
与当前turtle的交易总金额
0 P, X; h3 g2 x$ k, K5 ilocal-reputation# n* A- ~" m3 U- ?: Q; h7 v( U# H# h
global-reputation
' X  V) _" q- P! H$ Ucredibility7 ~$ K" t( b0 ^# e& O
;;
评价可信度,每次交易后都需要更新
3 |* U3 O6 `& {' }; Fcredibility-all
6 |: M7 s; [5 t6 W;;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  D9 |: Y6 \5 M: b9 w3 F8 |
9 r8 P2 w- W: P( w- i" S
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5+ Q7 Z6 i. ~  B7 L5 ~$ Y) w, X
credibility-one
( V& V3 F* s: V, l+ |6 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people8 H$ `6 z% L3 _- z8 F2 |
global-proportion$ ?: F5 Q1 N; Z6 s- H! N
customer
5 c7 q- A3 x# x% E# T* a2 `customer-no6 @% T8 N4 }8 J) m
trust-ok) n0 O+ F1 w# J3 y
trade-record-one-len;;trade-record-one的长度* a, l$ W+ k" h$ S; p
]' S' a  o' C9 Z7 ^
4 L  s; u9 f& y5 Z
;;setup procedure
3 R. @6 a; ^. W* P! }: _6 U' o3 w4 M" L+ U4 c. L$ \) K
to setup; q# m9 U- q) B0 M- C$ K* o

1 f  S6 s/ ~- X1 t4 Z( E% Tca
: P& N: W4 n& r8 W$ \1 n2 L

" a  m6 L) a% v; g% k+ Oinitialize-settings
, T) x  O+ C2 Z3 M$ P( m; R

' O- {6 e0 P3 r5 hcrt people [setup-turtles]

4 h7 Z" M; O0 N6 Y* G- W
, Y! x2 d% Q. T% s$ u- N0 F! [" Kreset-timer

. q! n: z& ?5 l4 x* D' n7 ?4 ~
( U) F& l6 N: w% ppoll-class

. A5 _9 X2 K% T+ l& Q4 v
* R5 t+ _/ v/ I# S1 }setup-plots
& E& {$ X4 o2 V8 a5 `+ `

8 ?/ s  A- V: @! Wdo-plots

! U, A/ y" {( I6 Q* kend
4 s: t+ d$ O: `" w' `/ X1 |0 W! h& l
to initialize-settings
$ @7 A4 C4 k  i) j, K* q3 Z
" {* H1 E4 c5 I/ j  A1 Zset global-reputation-list []
7 y; }. w( ^9 F- D( u) T1 m

' Y5 G7 {4 J: }9 |+ X" m# ?set credibility-list n-values people [0.5]
9 B! a3 I: O: ?+ F

5 U; Y6 e$ T9 G4 |1 T4 y; Aset honest-service 0

% y, [' H' w. O1 k
4 x( u# g" `" j% Z' {set unhonest-service 0
" u  c* j; b5 A  M
# M) r; |6 F$ R6 i, W9 `
set oscillation 0

7 u, m/ ?. E+ {: ]
3 V6 v9 S$ `0 [$ J0 q6 O( Jset rand-dynamic 0

- B4 p* }8 w! L, ]5 b0 B0 u- zend7 g: K: |3 ~. H

0 L7 z3 ^+ r) b% f0 \to setup-turtles
8 u7 n' \  K0 L! F) Jset shape "person"7 c" b3 J& p1 [: i
setxy random-xcor random-ycor
: G5 i% ^, s  j( g) j( I0 nset trade-record-one []
) R% J3 J3 S# v
: j) p0 q( K5 I7 q! ]% m$ g
set trade-record-all n-values people [(list (? + 1) 0 0)] $ `/ J% l7 A: K0 M, }+ i6 J1 u

# }- i! _1 l/ d( p. x( xset trade-record-current []0 x( e+ S4 x( K# ?6 b- k% ~5 F, r9 P& B
set credibility-receive []+ l( M( W" t/ t9 A4 ~% n0 k
set local-reputation 0.5
7 H1 |: G# @+ _; S! n. bset neighbor-total 0; k6 x& j. B9 N0 R& [, s9 j  K
set trade-times-total 0
0 z$ o; n2 d8 i' Iset trade-money-total 0% S0 l$ q/ d. d
set customer nobody
/ ]7 \  h+ @# Y: Kset credibility-all n-values people [creat-credibility]
9 B. i: H9 m+ Z, i4 z( Cset credibility n-values people [-1]
9 _& E9 ]  b$ D8 v0 X# V. Rget-color
* T" [& P$ d- O# p  K  ~6 D/ u
/ v& u. `5 L+ T& I/ q9 U
end
* K8 `' r* o- Z- E2 z. [
( z7 ~) r# E# f; y# \9 R5 U+ n% jto-report creat-credibility
& B- G3 N+ ]2 N& R+ M' Mreport n-values people [0.5]
2 v. C4 V. u( c- D- Cend
  R) c1 v; P7 g: P6 _6 {3 C# d; v9 h; ]+ |( m
to setup-plots
6 t' G- E6 s, B) N+ s5 n" n
2 |9 \6 l) o* D% m, [% f8 I6 Gset xmax 30
" E! e- \$ d* L' |0 A
& X! |; v5 n2 B% E/ p
set ymax 1.0

1 v( x% V3 f' Z  z" n" f4 ^$ r( t' Q# M# F: x2 S5 `
clear-all-plots
! _! N1 J  d1 S$ h/ |

  ]( q1 Z6 s$ g* c& q! Osetup-plot1

- L" |! C( _' a' U: u$ o+ q
. g* ]0 B' A: M* lsetup-plot2

4 _6 ~* I% w( a, Y# o
- G5 }7 {# k- x3 o, y) lsetup-plot3

8 x+ |0 M, N6 T( i# cend
. D0 L4 Q: s% {% X) N, w
4 W' {* A9 z- m( N2 ]( n3 v;;run time procedures
# q/ }7 l+ }5 {. Q
7 @* T2 T# c( rto go( G6 S" |* c2 {: @+ c) V
' O0 D7 p% [4 ]/ S
ask turtles [do-business]

- }6 S: W6 _6 G* _end
0 H6 o- y4 A1 q9 W% Z1 X
6 e9 U1 H1 L* s7 ?, P- uto do-business % V' l+ x/ T( R
, S7 ~) N- Q' m/ Y3 d4 |! ?

5 J. H1 T# ]1 m& D4 X) {3 c5 ort random 360

6 p( ?# q: `" }0 J* j" u+ B. N/ K1 p3 f7 p# r% W
fd 1
1 d2 i" H' S3 ~/ I$ @# n

3 S9 l2 ]# f  _- w; v# J5 Yifelse(other turtles-here != nobody)[
8 h2 d: T8 k1 \' M" J
3 l/ i, L' T4 ~+ X  W
set customer one-of other turtles-here

+ t( H9 k) c) `% ?: u
, s$ }- _" w. l7 B- q9 N/ M;; set [customer] of customer myself

  e, @9 [: @1 h
" l1 Z( M- H) ?$ p; ], h7 Kset [trade-record-one] of self item (([who] of customer) - 1)
( Q% G% d5 z) V6 T6 Q5 K[trade-record-all]of self- d: Q' M, a+ _  _! |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- ]7 m6 e2 m; t5 R# H
# r8 O' {9 m! S
set [trade-record-one] of customer item (([who] of self) - 1)
9 o' S( W. f6 K' {[trade-record-all]of customer

4 }: ]/ D/ i) {$ z" m3 m6 \8 T1 v
. T+ i% m6 `, E3 dset [trade-record-one-len] of self length [trade-record-one] of self

  O0 x* l3 ?3 s7 T0 M9 A4 L! x: y
set trade-record-current( list (timer) (random money-upper-limit))
: m2 c1 i0 x  O& L2 l% C/ V

- W- {2 `/ N# J( K/ ?ask self [do-trust]1 u. ]9 M1 Q; O6 R
;;
先求ij的信任度0 f* n2 N8 S" r

! p& q( R$ l, @# G$ E0 kif ([trust-ok] of self)6 D8 V' h( p, ?7 _0 d
;;
根据ij的信任度来决定是否与j进行交易[
0 a; n) C% x( ^6 n! Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- q' J6 T' N8 `; d. k8 j9 F+ v* W; U% i  R( U
[

3 N0 M; ]& h  S6 i1 ^
3 f( X1 u% ~$ I, A; ^/ a# [# D9 fdo-trade

7 l: j7 |5 t( l' |9 e1 T
- v( Y' D6 m8 Y  j; Gupdate-credibility-ijl

, i. b4 @* ~: K3 m5 f8 ?9 N; E+ i( e6 q9 C
update-credibility-list1 {' ~7 \  [1 _0 [2 m

; R9 h" I" z& g$ O6 A3 B1 ^/ O5 ^/ b2 Y; A. {5 x
update-global-reputation-list

9 a6 l- h* A3 k) l1 Q! K' u- f- f# }( @: O; S3 e
poll-class

5 w- Z" m: U% O
1 N! K" F7 i0 R9 E: [3 v1 pget-color
+ O2 X1 I, o  i' N+ }+ v
  m; A0 @- s6 d! c, Z& x7 K
]]
" M% X) v( W9 p8 X! c8 x3 b, N' b  Z7 y: i% J! K
;;
如果所得的信任度满足条件,则进行交易
) i5 [" d/ y2 r5 {) A4 j
1 f& G5 ^5 e- W$ x& W7 K. C[
  P, D1 {: I: k2 d) I6 k
' L+ U) q6 z$ ]9 ?/ e9 ~9 r+ |- w
rt random 360
5 V' a. |4 k9 G7 p1 v

- E; x6 K& n& W) ffd 1

, Y8 y+ h; K( m* i6 i6 X7 W2 R* S0 p5 ?
]

) J7 l* u, {6 w8 ^: p$ z
3 I/ ]1 W& q  c- Xend

3 i: I' \# |. i& W/ [& `$ R# [
* D8 U$ M3 j8 @+ w7 D8 P6 E! R6 e1 mto do-trust / C, s9 I$ d- _+ v" B# G$ n5 ]4 C6 ?
set trust-ok False" o# k% d' E6 S4 A8 D6 \+ Z
% p* g$ P5 q) h6 q9 @" u9 w. x
, M) N( c0 x1 [$ ?4 `* R3 s
let max-trade-times 0
3 O" V- m: q* yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, k) T% x5 Y- @1 Clet max-trade-money 06 p% B' t$ j3 }, l8 ~/ T, R' R$ U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ H7 a9 `/ ?. c" 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))
9 L& Y6 D" [4 D$ n) ]/ P
/ y$ n% T# k0 _: J. M4 W; P
' c$ ]% \1 D. ^8 A0 J; O
get-global-proportion/ y7 H7 R; T% Q
let trust-value8 W2 L/ y6 A1 D
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/ s4 [+ u3 W8 P9 i0 t
if(trust-value > trade-trust-value)' v3 B, B7 e4 S
[set trust-ok true]
$ y) x% \: B9 m: Oend
4 ?$ E+ z6 V) C! W  g6 n, f9 ?
4 _- q1 S, I# c; ito get-global-proportion
% z1 A1 u8 e. y7 I5 E7 Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): y8 D, N/ P& P* H
[set global-proportion 0]* C9 v" d- W/ h( A5 n6 D/ G. g
[let i 0
8 b4 u5 E- {5 W! `9 Qlet sum-money 0
9 v& f$ N5 r$ n/ wwhile[ i < people]
5 {  K( i$ m) G- i) k& Z- A6 R[
% v! C. b6 _, _& [9 Fif( length (item i5 P0 ^, C% `" w
[trade-record-all] of customer) > 3 )
% b& i: D. ?9 C  y2 L( D, b
[
% t4 F3 q* r! Zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' @% N) W. S; e' O]9 ^" I; o+ L+ ]9 H1 S1 ~# ]4 E+ T
]/ W6 U! W: @7 U1 f, j0 z
let j 0
( V2 d5 E% X1 z( i% J2 f0 Elet note 0) j3 o; p5 x" E9 i1 j
while[ j < people]# p  @7 O; C$ a2 b  H& B6 s0 G
[
) ~8 M# j: T& p' G4 V) Xif( length (item i
) ]' X4 c- W3 U0 [& }[trade-record-all] of customer) > 3 )
/ M) @) m7 `* \* P/ e6 Y% E3 F. S
[7 Q+ `' m9 T* V$ s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' @& \/ W4 Q; y- @1 h$ f+ v" T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ S0 a  B# `, j$ C; \8 C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' [! o( r8 M2 `( v
]
' T5 Y' T- f9 ^& M( A$ @. t]
2 o& Q$ o9 [7 W! G9 Yset global-proportion note
/ T% |0 O3 m+ m* \: V3 ]]
  W7 e" Z2 u6 N0 B' n4 t  Hend
7 M: K5 J# ?# F0 |6 G& |$ }0 L0 Y8 w$ j  e1 v$ V
to do-trade
- m3 _5 C) H6 L6 m# z;;
这个过程实际上是给双方作出评价的过程$ {) x, h- c2 I0 S, \1 ^# w- o2 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ S% E  ]& q" h, g# t) ~3 K* {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 O0 v2 p2 P# r2 c
set trade-record-current lput(timer) trade-record-current, L! ^( I7 Z! S. I% Z5 w& J1 Q
;;
评价时间( Z) U- z# `( @3 f2 Y$ g
ask myself [! x0 x/ e  R) h, `" R( c, [
update-local-reputation7 z; J4 M2 p# ~0 f
set trade-record-current lput([local-reputation] of myself) trade-record-current4 T6 B" d/ H* Y* x% k) O
]1 M# n4 i6 ]/ [9 R5 C$ i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 L. [  z4 V4 k! e" v;;
将此次交易的记录加入到trade-record-one3 q3 S+ T6 ?' ]  G, Z! C3 C; n# i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ {6 p4 T! F: f$ K4 Dlet note (item 2 trade-record-current )
3 I; c5 _) Y& [, gset trade-record-current
7 G& S" Z# C. [(replace-item 2 trade-record-current (item 3 trade-record-current))
( f. s, d+ J; k; G
set trade-record-current/ [' J% z2 I/ `: W+ O& r3 B8 @
(replace-item 3 trade-record-current note)
2 B6 z% ^9 D; A  K/ U# I8 W2 J( x/ ]# J* ?% E
5 d+ i; `. Y& J2 Q
ask customer [. G# A) ~7 f! v
update-local-reputation
6 N: e% n. M# a5 Iset trade-record-current
, j; {4 X% b! ?7 T$ C% L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' [6 _( r2 d% ~& K& d: p6 [8 L
]) t& \- F2 H! w* \9 h/ N3 j; N- N# l

, v. p6 h: s5 E4 m# q( e9 p& n. H3 [
7 J: z- K1 v: _( |9 |6 x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 ]2 Q( y) \$ C5 h" @7 h
5 N( r- Y' k3 B# {1 p- r/ Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- G1 w$ w% n1 {, m" H1 S5 e+ v;;
将此次交易的记录加入到customertrade-record-all
4 n% y; [8 G' u6 P! Z$ Uend
4 V; W3 n. F2 ?' \6 ~
& K( G# J8 i# h5 Tto update-local-reputation
* q/ y# m- z/ s5 I, ?set [trade-record-one-len] of myself length [trade-record-one] of myself
3 a6 i- R% w+ V/ P8 V' E
, i0 p& p+ m( a. X! n4 U2 U# B1 ]/ O' V" _/ {$ ~3 G
;;if [trade-record-one-len] of myself > 3

! |+ p- `4 @! H: n4 M4 z$ D. |update-neighbor-total
, J! |( P' u) w6 S; _! U$ f;;
更新邻居节点的数目,在此进行0 Z& c# z% H0 ~4 x
let i 36 U( Y* F% J1 p; @. x6 r( D
let sum-time 0
/ a3 Y( Z/ y& s# f" w- B0 Rwhile[i < [trade-record-one-len] of myself]& Y* o/ E2 R. x+ R7 ^3 s' o7 b' p
[% v' I$ P% J' g- E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' R, [9 e# k( E; T0 z
set i. y8 Y: s4 ^% r1 x( j& v2 f
( i + 1)
. c) ~- ]; P. A5 h
]7 U6 ?( Z+ I! d9 ?9 ~# w
let j 3/ Z+ ^* E' B$ R
let sum-money 0  v( l6 h  m0 C7 L0 _& h: R
while[j < [trade-record-one-len] of myself]
9 O8 q  F, h. C8 K[" S* T3 v1 v5 z! @* }4 r6 `* R0 f+ G
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, u6 p! k5 nset j) M8 ?- `4 d. O! |0 Q2 ~) G
( j + 1)
1 B; R/ O  y( O
]
, e4 G; P; B5 d' I  \2 Flet k 32 C# _3 {& Z, }# J7 D
let power 0
1 c$ U, A2 A* H( {let local 0% W& d& d' ?8 m* D
while [k <[trade-record-one-len] of myself]
8 g# }+ U# g) }7 W' g[1 O8 F% q# Z4 O- c# G) ?
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)
: `7 f) S7 @' k0 l" E  dset k (k + 1)/ O+ e5 e3 l: x! a) Z
]
: ]0 T6 D4 d& ?2 j% `set [local-reputation] of myself (local)6 _9 f+ K0 i2 @- @
end
% R6 y  S# T0 R. S$ ?0 y6 O7 A* a- U( ~- C" d' V% e
to update-neighbor-total
, ^1 O7 K3 x9 l2 f- s* g: V% k. k. h3 ^
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* r3 l) B5 d3 T! V/ M# _$ H8 Y
$ n) u, W" T# F8 R. b

, j4 y6 Z7 X: U% Z0 Fend
5 g5 D, u4 N7 y) T3 r5 q# _
/ h5 B, k2 [; b$ }to update-credibility-ijl
: v6 L& `9 C$ F: C+ Q8 E6 K, O" D
% }9 |8 \& g' D- ~: t;;
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。
( }8 I1 ?0 X. o- @6 h/ y- xlet l 08 A8 |  o: d. R0 p
while[ l < people ]! T6 {* V1 O- G, @; V* J
;;
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8 a! @. x, ]& ?4 M
[
6 v* D2 m' n- E2 F( D- u- E- @let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- o4 E; s; A0 ~$ H. u- l- n9 |/ O
if (trade-record-one-j-l-len > 3)8 ]" j. Y( K* C2 l6 b5 ~
[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-one6 c  V. Y* v2 e  _
let i 38 @4 M+ P$ S' e3 S6 R
let sum-time 0
* q& a+ k) B' y/ ]while[i < trade-record-one-len]
2 ?  w, d& |9 |6 U- y$ y[
' Z9 x8 v: k, J' }: jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' m! n" [+ o( x6 k. G7 U
set i
* D/ h- m* a3 L' J8 x7 J( i + 1)

3 ?# O% |9 b6 W) ^% u% z) K" u]4 |+ W. m- K+ x6 E8 g7 E# x" f
let credibility-i-j-l 0
  a( r- i3 q, ?& \1 h4 a$ H;;i
评价(jjl的评价)
+ L# }3 {; Q' c* xlet j 3
1 G7 I. t* q6 w$ v3 `& v) t# vlet k 4
) O% d, ?& |+ ]; r; h2 n3 d8 t: swhile[j < trade-record-one-len]
# p9 c" t1 m8 U  K1 L[& K- p! t) W& j% s: g! @; |6 ~
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
( K. L0 d; S( U2 b6 L9 d' ?1 a* ^: v2 |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)
/ Z* T" S# u0 T: D! Bset j
  e" c& {0 F* \4 P* M! K( j + 1)

0 s: p$ e! C9 B4 p; y) z5 ~" w]# n' [8 g3 L  _% b( `0 g
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 ))3 ]8 l' I) o2 p9 ^) Q6 q5 D. X

4 |1 I* r1 |" Q. q) t
* ?' M; \. {' M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 N( m9 ?- a$ s* p
;;
及时更新il的评价质量的评价( C' T' V: G% U5 n+ K* [# {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! m4 g5 _) w+ J' O3 }! Z9 b
set l (l + 1)
  r" b. Z5 M" a, U. W$ U0 V8 z]
) N2 y2 K# X+ {- E: oend% l& V. L. n, @& ^% v1 r8 q" O
* `* a4 u& i9 h4 K1 y
to update-credibility-list% L6 P) s3 S- ~) |% w
let i 00 H# J! @2 Z& ]" F; ~0 r
while[i < people]
" O; z" P) i! V$ C[
8 {6 V, X1 m* O, v6 A0 G# xlet j 0
5 K% ?8 ~' E- g3 }% K. J- Clet note 0& Y! J, F' |! Q& R# h6 ]5 @7 j
let k 03 p& Q) `0 V7 P( H! b; w
;;
计作出过评价的邻居节点的数目2 X. @* [3 g' F0 Y) n
while[j < people]
$ o8 t6 G+ U+ _; g: L% a$ \[
% K. v9 p! `9 lif (item j( [credibility] of turtle (i + 1)) != -1)9 c8 i! M/ ?% ?$ P
;;
判断是否给本turtle的评价质量做出过评价的节点
& c# N/ d0 X5 U% @[set note (note + item j ([credibility]of turtle (i + 1)))
9 I( [8 G! _; v* u;;*(exp (-(people - 2)))/(people - 2))]
; Z) Z) S5 b6 A; Y$ D
set k (k + 1)( \$ \% c6 j0 y) Z5 w" t
]
# X! f. ~4 I* f( w, H' eset j (j + 1)5 j0 e! J( \- g, R
]2 r6 s; }/ a0 n
set note (note *(exp (- (1 / k)))/ k), U5 R- p" V# k/ L' _
set credibility-list (replace-item i credibility-list note)
8 e2 D9 O4 t( |/ w' j4 F$ r# N- Sset i (i + 1)& l3 u' T/ ^3 {( Y6 j# X+ j
]' m0 ]: ?# q: z# j; S2 c2 D
end) W$ R- h& Y( t& n# r& |

* D9 F6 R; P: Yto update-global-reputation-list
/ T6 w- Q# s6 _. N+ A( [let j 0% H: _- ~" |& m
while[j < people]; g* }$ A/ A* S1 ^( U
[
5 N3 s0 h+ N" Plet new 06 p7 w* U6 C8 z' K6 ]; Y6 w) N- |" b
;;
暂存新的一个全局声誉
$ G- y4 j3 _# _/ o8 plet i 0
1 B+ d! b) m+ o7 ?4 c% w3 `let sum-money 04 M" `3 ^/ `+ N7 G5 b
let credibility-money 05 [3 p( g8 u: a
while [i < people]: O& h0 m9 _4 q! Q& V; k
[
. y0 D. |) U2 a1 V) |1 z6 ^  _: cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 C) }% p2 u1 sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! B# N; d1 b5 A$ C8 |. T
set i (i + 1)
. f& T% l" ]3 I' a( _]& S& R& h% G% s& w1 W: f
let k 0
  O$ g6 _2 d3 N4 ]let new1 0" g, P% Q$ ^/ M' Q
while [k < people]/ G# a9 H- P2 [1 e5 f. J7 ]
[
: s! C* X8 f$ ^4 Rset 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)
$ {9 G; y( a; M' c+ i6 W0 Bset k (k + 1)2 L, M4 w6 S; F. S, k
]
. ?) L7 L, d% l8 x, E& k7 T" Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : s  o# l. k  [" y: e7 I* `& S+ S
set global-reputation-list (replace-item j global-reputation-list new)
3 [/ r6 [' ?. z+ k/ Q1 K0 R) q+ V! pset j (j + 1), r' H( \4 E/ l9 h& {1 o3 T& L
]
1 E7 B" @! D9 d# `( s, D1 n6 W  r3 Nend& _1 E$ t! c; ~; Y9 c2 ^. Q3 F
; g6 O& i4 ]/ S* A0 i6 G, l% C0 l
! X3 x7 o! n3 m! E
: ?% g1 S5 m) p% H: G: y1 V: C' ]
to get-color5 A2 ]- R& y7 d5 ~
, z$ z' E0 K6 J) i
set color blue
# C$ P! {' B2 U: e7 `* b* {9 g
end
! w# J: I% t0 q. q1 V% |
7 ^8 N( k7 E5 V- [6 F6 [  u8 ]% Z6 T& E2 Lto poll-class9 i& z  q  y% W0 B
end0 o0 g, e" u: Q. Y( q) f
6 c+ i+ O5 e* O4 u8 j) P$ y( L4 c
to setup-plot18 ^2 ?  G. M, _! R& z3 S/ Q

4 ^8 a" U3 ?  P- V* Bset-current-plot "Trends-of-Local-reputation"

: F- }7 s  k' c% C6 W; Y; x3 r. p& }+ J% ]8 o$ {& c
set-plot-x-range 0 xmax

3 G( z( j+ o/ _: r: I* [8 U5 G, y/ u- |4 a4 y
set-plot-y-range 0.0 ymax

# G, w1 ^' v/ Fend8 o2 O/ J9 l, c6 i6 L
$ V9 z% A* j( Z+ t1 v# s
to setup-plot2: C/ i  r& Y  Y: M+ C; Z

) P: X/ p* Y" @) Sset-current-plot "Trends-of-global-reputation"

8 b, h; w; @: H& b( Z: ?7 I7 ?; }! Y+ x3 `
set-plot-x-range 0 xmax

" ~/ ^; Z0 [( n& Z" z+ @% }, N% {  o; c  d7 ~0 Z
set-plot-y-range 0.0 ymax

8 z1 ^% v% w  A9 Z0 }  vend, m: b+ R* m9 P7 L1 ]

7 I$ S( Y. o- V, x# `to setup-plot3
& p: Q: v8 O2 A+ I; |8 Z0 f1 d: \; ~
set-current-plot "Trends-of-credibility"
$ b/ {8 {1 z$ n! U

" \% }; D! C1 j7 a9 V% ^& wset-plot-x-range 0 xmax

! e, ^/ X( X% C/ o! j$ V
. N: C9 B* U8 O! X: ?0 uset-plot-y-range 0.0 ymax

5 M- v$ n# `7 h7 E7 K: e  E+ m; dend
& w. P% s0 N  B% m
# y: e4 w6 I$ y+ jto do-plots
! n+ n' u( K/ m9 g/ ?set-current-plot "Trends-of-Local-reputation"
; J5 P- X8 H4 k- a9 h$ M; qset-current-plot-pen "Honest service"
* N& O" a/ o& l4 x. w0 U& ^% `  xend0 V4 U' d7 L; U5 u
+ e/ c. c% U0 \1 i# g
[ 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.% S0 w  ^+ R" E1 g7 j% f

# q4 ~# R) ^$ @8 ]  j: E  m8 U7 o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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