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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:( F" l- O( i  \8 D& ^
to do-business ! m2 i. G7 n+ K" g2 B, b
rt random 3609 K; U) P4 h( A; E
fd 11 ~* {, B5 ^7 G. q( ~
ifelse(other turtles-here != nobody)[% J, a% z6 x9 c/ p0 Q0 n! s
   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.
7 O6 [; @6 X+ P& }' T( z* E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! ]: {3 c) b2 u7 F9 |! t9 s, f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 m9 s9 G6 X, s; O  _, |5 s8 j3 `; B2 f
   set [trade-record-one-len] of self length [trade-record-one] of self
$ T0 k8 v0 W( z: o% d' w   set trade-record-current( list (timer) (random money-upper-limit))
% Z, X* I0 D! G% B# |9 X: W8 q5 o5 Z! a, p
问题的提示如下:
9 L4 H- t8 L( o# _: J3 ]
7 M: P: M1 W4 t8 h. D6 ]. {+ P2 `error while turtle 50 running OF in procedure DO-BUSINESS
. z$ h3 y3 z. x6 A9 I  called by procedure GO
2 I. `9 R8 A# M# t6 k4 g' IOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 P' X& O5 m4 C! G
(halted running of go)
3 O, u" ~2 E0 `# f3 Q& C7 \/ J4 C$ r: q% |+ }2 X6 t
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~~5 P( W  P6 M. |# x0 M1 H
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
8 Z. w3 @7 ]! U: j# Y  Zglobals[
- t9 d; p, Z& qxmax8 ?. q4 ?! N6 _& ^8 t5 |
ymax
. `" n* }. @) o) G" n$ h' qglobal-reputation-list; E' o5 D; ^0 [9 L5 }7 |: L
0 }; ?0 @7 y3 @7 `
;;
每一个turtle的全局声誉都存在此LIST5 K6 Z: A2 P1 h1 a: Z; {2 g3 G
credibility-list6 B, u3 {; _! x% V: f2 h: I
;;
每一个turtle的评价可信度
, W7 m, ?2 z: W, @$ zhonest-service4 M' q  a  c: O0 L- h2 p
unhonest-service& Z) p! f7 D( o. s" z* {
oscillation$ n$ s& H' b9 @* M% F3 w
rand-dynamic
! R% N! |+ Q) a/ X+ ]1 k2 s]) D9 ?. q4 G& h1 y9 D

9 \+ @* g9 j( D! W% I( b) hturtles-own[, k, W% d4 w/ \& i. a
trade-record-all7 c* `1 q' a0 r) P/ H" ^
;;a list of lists,
trade-record-one组成
4 X# W* g0 }* C% W9 I: y+ ctrade-record-one* F9 k8 p, Y( D% G5 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
0 i# B: \' A9 Q8 M
( W9 i: Y% Y1 ]* f5 s  O;;[
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]]6 P- I% J+ m5 j. q9 X7 D  }% z
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]3 ?' ^' j. j# D6 c
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list3 w6 H6 z7 L; l  m0 k
neighbor-total
1 O/ Y- B: O3 k+ D. F;;
记录该turtle的邻居节点的数目
& c' F: q/ g1 u8 R2 w8 itrade-time. {: P7 V( l  a& P* z# s* N
;;
当前发生交易的turtle的交易时间
! [0 j9 B3 U4 C9 Bappraise-give
+ T3 M& A0 S# P4 \/ O. ]; J4 T;;
当前发生交易时给出的评价9 ^1 v' B) j0 @
appraise-receive2 b+ Y* |* a3 X
;;
当前发生交易时收到的评价
+ h7 X2 j5 M; _6 }appraise-time
$ w% \/ J% {3 B) C;;
当前发生交易时的评价时间
. K2 x7 L, u/ a  ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 y. S; L! U/ `8 e
trade-times-total& s9 ?/ K6 f& m7 `/ }6 Z$ r! V
;;
与当前turtle的交易总次数
# W6 O  f2 s! W/ _6 _( X8 P# |trade-money-total$ z2 M) X. y  Z  o. p
;;
与当前turtle的交易总金额
- ]- G) n6 R) i. Mlocal-reputation% y  r$ i% r* f) H) z7 k' g; t3 \- Y
global-reputation* U5 ]' b; ?) }/ l- l
credibility: w# e6 B! J& s2 L
;;
评价可信度,每次交易后都需要更新
1 v) E6 u/ S7 k2 E& I' G  Ncredibility-all# r& [. b& V7 Z* v% y) 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- _. A* N% _' h

" B. k1 k7 M2 [: d;;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' T# q' D% q7 P3 ~% D6 j. e
credibility-one% o0 V+ ^# _# P% ^
;;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
: B! Z; a* X8 iglobal-proportion
  P& K+ d! u9 `& Q/ c( n0 ~customer2 m4 a- O+ q. M0 y! K
customer-no
# K/ g0 s. \' qtrust-ok" E2 D9 O# m6 Z4 Q# }; s3 W
trade-record-one-len;;trade-record-one的长度* y! j& f+ j2 d% ?8 J& t1 s
]
7 u5 V  n/ T3 d9 Q
3 `  f) {5 y. g% h! M  A;;setup procedure
' ?0 n/ |5 Z( ]) W
/ n- d0 Z  e! J! l" X- j- i0 K& Zto setup  o3 w2 ~! Z* M, ], S# x/ V0 o
! T& L+ A. w( Q
ca

4 O* s2 t7 b9 z- P* z0 x; P8 P' D
initialize-settings

5 H: f, D$ R# X5 t# b/ B. z; X7 f5 {5 v$ `0 o0 C, M
crt people [setup-turtles]
+ w/ l+ T( ?2 J* z2 R9 Z
, O5 Y6 [' |' k
reset-timer

2 a8 ?$ r8 D: L: F! ~- [* Z4 ], S! [2 Q- d! ?1 v
poll-class
# a: y* k$ j7 N. l* P
5 A; s% r# n6 k, M
setup-plots

* k  S6 Y1 i1 i9 {: b6 O! z
& ^' r- @! e, mdo-plots

: h# b( j0 ~' b+ g- C& {end7 N; {  B$ `7 n4 I. p8 t

3 i" E& T) d! Q6 H; q% Vto initialize-settings
5 h. j- p/ `4 C7 ?4 v+ f8 J8 g6 m4 m" ]2 v3 @5 a
set global-reputation-list []

$ K  _; V5 P& ^, ~
9 C8 R9 q: b- y' j0 Aset credibility-list n-values people [0.5]

8 }+ p. M/ @/ Y7 O/ G7 |+ T
" G# d2 z4 \  \0 |8 u" Hset honest-service 0

0 r' V6 o) w6 ?9 x& I( R6 j! e1 Z8 P+ P$ k
set unhonest-service 0
# ]8 w& H  O! G% p+ g
% C; M; _) U7 {9 J$ h( E
set oscillation 0

7 ?# y. R, u9 A3 M* E+ y. ]$ H7 C
set rand-dynamic 0

/ s* \$ d  j6 ]6 |- @5 p. zend% }" I# [& u  _# r$ y
" Y' G4 h; R0 L/ W5 H
to setup-turtles
: i% c5 F& k" X2 ^# _) \8 zset shape "person"9 {; n8 K7 u; K$ N
setxy random-xcor random-ycor0 r% _3 F' M% a. Y, I, f: r
set trade-record-one []% i  |* I' F5 b$ Q- m- F$ }

8 j/ p4 v1 ?4 D$ h% {. y8 kset trade-record-all n-values people [(list (? + 1) 0 0)] + O; d0 m4 ^7 z3 S5 F2 t0 B$ C  j

% P" c& W. d1 ]" S1 `$ t  `set trade-record-current []& x4 O5 _! y+ {3 X% n
set credibility-receive []
* V! m! J& }+ A$ F' q" F: E  _set local-reputation 0.5' _( i6 e: B7 [! g1 n; Z/ V7 K
set neighbor-total 0
& V2 L# T; i  F5 ^1 U, Wset trade-times-total 0
% m, v  l# g& @8 Jset trade-money-total 0
' o. ^8 b9 d3 s7 y; o6 w0 c6 Nset customer nobody
/ t' J5 x9 O4 _set credibility-all n-values people [creat-credibility]
- \+ q% G7 E" {; x4 a( R% p$ T$ Vset credibility n-values people [-1]
* l2 A$ D- [9 J0 P* o0 g" eget-color
8 @0 p  X8 \; J! h$ X$ ?
7 y- g3 {2 P) X) c, Y; O
end
% }) f6 W5 @2 |" q+ T$ m9 c8 P" }. ~0 Z" M  a$ H, m  D9 J! @
to-report creat-credibility
9 b9 t) g; k% greport n-values people [0.5]# E) `. u# V" j4 w6 K. k1 g
end8 o# A  u! K1 f/ g0 T+ `) K
) V% ~1 G% Y5 I$ Z- W0 [" O. t* Q( l
to setup-plots( n) T6 [, \* g( ]
& [. }# a/ p! x9 i
set xmax 30

; O9 T- c5 ^$ y6 U/ Y7 G7 y6 p! Y; f, {+ ^! V% k
set ymax 1.0
4 u3 @9 ]2 u- p) m3 v3 p! D
; U) E9 ?4 G" P/ i% S) d# j8 {- U" {1 F
clear-all-plots

" z& h4 b  v- S! t+ \/ B) }3 Y1 k  X- }0 ?: ~$ s* ~. i
setup-plot1

/ V8 ]$ i* m/ r; ]2 W! c
% v/ e  J) |+ m% p6 C6 `setup-plot2
5 j3 v1 s" A6 V0 `
4 t. F* L- n5 j( |. w4 r; x
setup-plot3
9 T7 @! c/ K* a# Y& {
end
9 Z# Z$ p; J( H1 t2 g# P& ^: o) U, G: |0 p% y8 q: f
;;run time procedures' a* D7 v2 R' |# L# k- `5 u# r
; {3 H# H6 R0 R9 O
to go
' q, l7 o* X# r0 c) g/ V6 Q' Y0 a& p* h8 L9 Z9 q3 N  {
ask turtles [do-business]
0 z% O; N: y& M- v9 g0 E" Z" Z# e1 f" ~
end) V- E0 V. G. ^8 b5 [

" E% u* \& [" @2 V( W' D' e- |to do-business / y: S  y) Y6 T3 T! v( U
1 j7 `3 f9 r9 T4 d% {& B
, z/ ~* Q' `* J4 @! i: `
rt random 360

+ U; Y5 S& a* e6 W4 F! F
8 s2 d! {# {# F. v6 [; _6 k2 Y* rfd 1
2 B3 @( y% c1 K2 K3 |
+ s* g6 @. N1 Q- J/ i4 x" o
ifelse(other turtles-here != nobody)[
9 S% I5 `( m: ^! K: a: n9 l
2 G* A1 R- N& ^9 [( X, @
set customer one-of other turtles-here
4 k7 t" r/ ]$ r$ w

* V; _5 h  `. {/ V;; set [customer] of customer myself

! I( S8 y# `9 z
: p1 P9 J$ j; H! D- f% V9 Eset [trade-record-one] of self item (([who] of customer) - 1)
5 U+ z6 @2 U& ?5 y[trade-record-all]of self
  K/ N  z( j7 P6 I3 q2 g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ Y! R7 L0 u( |4 d- Z+ ]) F

4 v8 {9 B7 Y1 t8 Lset [trade-record-one] of customer item (([who] of self) - 1)" P8 E& ]% J1 H8 q2 g
[trade-record-all]of customer

$ d! y5 d3 j/ R, T. R4 f
$ b# O! f: B  Sset [trade-record-one-len] of self length [trade-record-one] of self
: p2 `3 X2 U" c: F6 k5 B
8 y8 x3 d# o; ?5 s( F0 q# c6 j
set trade-record-current( list (timer) (random money-upper-limit))
9 g4 q3 L% Y0 _7 G2 ~! j# X

5 j/ q4 Z, j3 j' s/ y% {, j  Dask self [do-trust]* \' J: }) {, L4 D; G  }+ a
;;
先求ij的信任度
1 L, _: O7 v% @# h/ X2 I( x# F& x. H. o! |- ?, E% _* Q1 ~6 y
if ([trust-ok] of self)
' U$ f8 ^: o/ j# j1 s# B9 o;;
根据ij的信任度来决定是否与j进行交易[2 F7 v, s6 f; p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( s( J. j/ Y# l3 ]$ B6 l/ {, C4 _* ^5 H" L, x1 ]8 C" V
[

; v4 n. b' L# n8 N7 O& ]; Q4 p) Y8 O1 b/ Z( V& v* D
do-trade

1 G; d( u1 s6 P
( Y. q8 {( R. B* {( z5 Q, H! }update-credibility-ijl
* h9 E8 J- v2 [) |/ V/ ]

1 l$ t3 B: @- }# \update-credibility-list) m( a4 x! c# R+ i$ D
4 {& M2 K( Y: |& H; W4 I
' n7 W$ B5 g6 A6 @, w# y) N3 @: V/ Y
update-global-reputation-list

- B4 I1 ~. j/ ^
+ d# c% E; Q$ {/ |5 ^. Z# {" ypoll-class
) s, r% e' S( y# \
4 Z) U0 e; E5 B  H- F! P
get-color
7 Q2 k9 X, x; j3 u: }7 G/ G3 j5 ]. s' v

6 B/ \4 B! J5 q" Z6 T]], ^* x% e1 H9 J1 Q) {

" J$ z* K' T6 T' P* s) w4 H;;
如果所得的信任度满足条件,则进行交易6 A2 w1 f5 G0 n, h, D' Z. D

! T5 ^1 @: K% g$ G) E  L: _[

3 e1 _- }+ q, U# V" I& h8 D, y( a. f
rt random 360

" _% z5 W4 Z( f4 P, L' z' T
* P( d( H. r+ a" pfd 1

. c) b9 `6 R" `! E0 c7 X
# O2 u$ x9 W6 I- _1 `0 M' _1 ^* ]0 d9 t]
0 v7 G' Y' i* s5 q2 }" }. B; s
/ ?# t) R9 H3 S
end

% @- f" `' F, F
. c" F7 C4 o0 R5 Q% lto do-trust   I  T! d, l  e' D/ c! e; }
set trust-ok False& J2 B6 {! V0 p8 b- P5 T6 y

" `$ o% ~# _! o) V( P
( k( E6 s* C( A) @0 R& L
let max-trade-times 03 W' X$ |6 l/ P5 F
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ J: s; i' B, R: ^" z8 V! ylet max-trade-money 0
% T! }, e- F4 L' L' F6 q+ q& Q7 uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 c3 n1 ]* D2 l5 d/ G! x/ H, A0 n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) Q  g. G# v5 C3 z6 T. q! E+ f; }5 i
( [% [3 F; s, w7 Q
# p% S+ O2 s7 L7 T8 f
get-global-proportion: O) o& E" M6 g1 r' q7 G; H
let trust-value
4 W- E9 ?" v+ xlocal-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& t, T, I' _% k2 p0 zif(trust-value > trade-trust-value), e  G9 @, ^! O# K1 W
[set trust-ok true]
3 \; R$ g' J2 |end- C5 A0 h- C+ i/ a

) a2 ^* ?9 W' M. W0 Z2 Ito get-global-proportion0 P" J, [& p# N0 T) }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 c! z7 ^1 k7 e5 F/ R, Z
[set global-proportion 0]+ T" X* N2 }/ z( @" ?6 U
[let i 0
9 h% J* ^  K' V( ~: ^let sum-money 0
1 h7 c/ M  N: ^5 t; J8 {/ [8 twhile[ i < people]' [! E$ S: {, Y
[
4 Z( P/ f& M3 R: j  L, O- A5 _" L, F" Fif( length (item i5 K1 G2 k, H! f
[trade-record-all] of customer) > 3 )
3 [* B0 e4 Q1 L1 [+ G
[! L, i5 i( a+ D
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 R" Q& w' k/ ~1 @]7 V0 P, B$ r% `( ?9 [4 ^6 {
]
" u# Z% h& L5 k9 y* }let j 0
4 p! ]3 L8 j, @' y2 X: rlet note 06 F5 i) }6 `: M; o" ?
while[ j < people]
1 G4 S8 ~& @+ c5 u3 V[
' q9 q1 a0 P; O0 }  Zif( length (item i
+ y% w1 g& _8 Q( K4 g7 l; d+ [2 o[trade-record-all] of customer) > 3 )

! B, i+ k9 [# G+ C1 Q1 {[
* B; d# K# b% p% j) [1 Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: M; ^; g, U/ }) q" e( m7 \; N- Y9 j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 e5 A3 H0 T9 w9 x0 g. D[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 x. M; I! s& E- h! L$ d  p
]0 `1 U1 Q# h( h  g
]
: ]" z5 |9 w  c" pset global-proportion note
2 Q" Y+ Q4 i9 k5 \]
: R! ]) X6 ~5 y/ J5 u, iend, k5 {* p( H. V' ~4 @& i

% z# V9 t+ Z  [3 I0 |! ~! \+ i  g: ^to do-trade2 p: h( C- s) `$ y9 ]5 ]
;;
这个过程实际上是给双方作出评价的过程9 ^/ `2 X  g  ?2 p/ J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 e( `7 @! b: ]- I0 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; c0 k3 v, f2 ~" V3 Iset trade-record-current lput(timer) trade-record-current4 J1 d  D+ A7 C8 S/ E$ Q
;;
评价时间+ |, ?2 b6 `# C  p# _! B4 j  P5 ~
ask myself [, v+ u* S/ w6 ^) \( U
update-local-reputation
( ^  Z1 Q, N5 M8 H) H) Mset trade-record-current lput([local-reputation] of myself) trade-record-current
' J8 F( ]5 u- J7 _]1 a0 v- O2 D, I) x3 [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 E% L0 D" A/ @. j% X' Y- b2 k
;;
将此次交易的记录加入到trade-record-one
" c8 [* V7 ^9 F! bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ c2 ?1 ]# L! v4 S1 v/ b  T4 {! m1 Q
let note (item 2 trade-record-current )
% ]3 L8 s& K8 ]: C& A* Uset trade-record-current
4 @4 {( u9 Z( k$ Z5 n1 Y( O(replace-item 2 trade-record-current (item 3 trade-record-current))

1 u# ]- a! B* m" Hset trade-record-current
1 p) y+ C, `' @$ c6 c% T( [(replace-item 3 trade-record-current note)
& }  ^, r9 d8 N0 {6 O; ?9 }
( N9 w* B( E. q- S3 o+ U8 ?

; }7 U5 o# n) L6 [, Z) g& Cask customer [
- {# g2 p% u3 |8 v( @; hupdate-local-reputation
. G: s% [% V) f: P- [1 u/ [set trade-record-current
/ n$ o8 M: }1 E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 N; w9 P# ^0 g
]
5 y( P) q$ m8 ^1 u5 y
  S4 v- l' V4 L' ?5 H

: |. {2 H: y7 Y' ~! B) I3 Pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- w; J! k- @. F+ U$ g5 [

1 ?) U# P+ R  eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" w; {! V0 j4 |- s- @;;
将此次交易的记录加入到customertrade-record-all
$ a7 N, g4 N% aend
+ |& J# g9 B9 \( M: p+ A) S* C/ d$ v: C# w3 ]3 s7 Z/ G0 {
to update-local-reputation
- Z: x2 s7 [/ R3 \set [trade-record-one-len] of myself length [trade-record-one] of myself
5 T, W5 p4 ~1 {& u  p- l' A
, O1 J& c4 x7 h- O
6 V3 |! \! D) z7 k;;if [trade-record-one-len] of myself > 3
; K/ G8 R! g7 e# f- ]
update-neighbor-total
$ a/ D  v9 |  P9 H" s& q* K;;
更新邻居节点的数目,在此进行
! i& [9 E4 x8 e- s9 F7 ?let i 3
" s# F0 \! k/ A4 alet sum-time 05 {- ?& w( `5 V  f7 B- T% z
while[i < [trade-record-one-len] of myself]& v4 |- o$ G/ G4 s4 G. d
[6 w7 T" q. O' ?8 z/ D% D" Q7 Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ P$ y  Q2 ^& O& e1 X7 ?
set i, x% o* c, Q! I: g$ X+ _. I; R
( i + 1)
4 p+ A: `) ~0 a7 G3 B6 t2 X3 s3 l
]
- _- K9 ]6 ]( flet j 3
4 V: f* b  G0 x" ]let sum-money 05 S$ C8 i7 E1 J- e# |4 [$ d
while[j < [trade-record-one-len] of myself]- h; D4 Z  q: M, |3 ]
[
5 {4 m' f2 c& X8 A1 y" `: Aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
1 H( L' K5 Q1 h9 Rset j" S9 ]1 F$ Y8 h  [) `
( j + 1)
" c3 u1 l, r7 f# h
]
) g5 G2 `/ x. E* h/ s% f2 n/ e$ olet k 3/ D3 n$ `8 V% E6 ~$ z/ {3 l5 N
let power 0
% K3 m/ B) q4 p2 ?! x% V4 Ylet local 01 ]. I( S1 [5 n" f/ }: Z" O' B) H
while [k <[trade-record-one-len] of myself]0 [! B5 Z1 f  ^4 ^/ a) V
[
" R; ~9 z. o# I- I7 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) + N: [& o! ^6 H/ Y4 Y! S
set k (k + 1)/ a+ C) y: t; }9 K; l% y
]
5 |% _! W1 E3 ^5 X" b9 b$ P! q( p( h1 Mset [local-reputation] of myself (local)
. ?& r3 h  u( {+ v2 @6 w. yend
% H/ u' U3 x; H8 Y9 M3 Z6 Q+ z
% O( x8 A% Z. T# u( dto update-neighbor-total# V+ A( o5 p& x: `0 X" `
( s: |% E( I2 ?. t
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& Y: r' V- s+ n6 O8 W) T- s/ t  `2 E1 \9 W
/ v* B; z8 m( ?- B$ y) C3 W* k
& d, F+ N  E) s, e; m
end; L4 O: G; I8 B8 N2 K' y. t& L

7 o! q& N0 R7 T" s5 tto update-credibility-ijl
+ p" r8 [8 r2 E; P0 T# N" \4 z- W- i% K5 G! b( j3 r' d# b0 T: y0 s
;;
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。
0 x$ R( X+ m9 Q: J) Y2 Qlet l 06 ?" s) h$ N' W9 F2 H
while[ l < people ]5 r: t/ W- a4 {+ o) e% I; g6 t
;;
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
& \( l6 j/ N0 X( z[
7 n. O, L5 S' |# X' z; d) zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 u3 c" X' ]+ E7 aif (trade-record-one-j-l-len > 3)
( j0 {% |# I  T* P2 Q[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
' I0 o4 b: J4 W0 c  ?let i 3
. E& T- g$ @* B7 K0 Zlet sum-time 0
5 I( _7 U, J' K# ~0 \, rwhile[i < trade-record-one-len]" h: n) [/ X( d2 Z5 b
[0 h& R: D0 R$ ~4 O& k8 n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: ~' Q, i& S" q* s( c$ B1 F3 {9 hset i' X! D/ J' v; M4 s8 j- T
( i + 1)
* k; _- ^; S# q% n  j1 x  E
]
7 C; U9 v* t, ?. m9 {let credibility-i-j-l 0& a# l8 P- f9 w" @. w
;;i
评价(jjl的评价)
- j8 ^! z/ p3 \" _: @! ilet j 3
+ l/ z# K' P2 V* I0 \let k 4# t, f4 b( o' y% J
while[j < trade-record-one-len]$ `2 y# ?0 L* I! a9 R2 V7 g6 f( Q
[
! t8 z/ p0 L7 Z, P) K  Y, @6 nwhile [((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' T- |" X* b: R7 q4 Z( t' i
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)
" X# V3 c, r9 g0 A5 h" a: hset j: K) H1 C% F; h+ _% z* h! [
( j + 1)

, D# A3 h6 }8 T1 A, V- I  R2 K]0 r. T# n) L0 Q8 c1 `4 ]9 r( J9 P
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))! h  b7 d: U1 \6 E# c+ f( u

# ~) x% ]  i6 y+ D" }" M& A  @
2 J' f9 c; {3 w, P& a0 G( g- o
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 a+ L( ^* B1 H, |+ @) H' ^* z;;
及时更新il的评价质量的评价( O4 x( _2 W) N4 V3 o: F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( ]; R8 c- d0 [- D9 N, C8 {* g7 I: hset l (l + 1)
& i9 S' A0 i! H2 z$ v]( l2 z4 S! Z, @, z8 i- n
end
8 q& Q" e+ y8 c7 h4 f, e
/ B, }% S( q* J* }+ x& dto update-credibility-list
0 g% `+ n* a  P* ^, rlet i 0
  }/ |8 T+ V. M) l, ywhile[i < people]
1 L/ C! K) G- @  ^  `* N. x[  ^9 W9 o1 N2 [2 k, o; R3 Y( P  D
let j 0
* [! q. d, N- ^9 {+ m% O9 flet note 0
6 e4 j  u# R' ^! M* |let k 0# |7 a9 w  }! C4 K4 M3 S2 t& d/ e
;;
计作出过评价的邻居节点的数目0 {" e& F/ S$ K+ ]& C5 y# w
while[j < people]+ O' @% m; e0 [6 ~. z5 o
[
4 n% d8 l2 Q8 u. F/ lif (item j( [credibility] of turtle (i + 1)) != -1)' l- A+ ?) S" y2 A' `0 }9 F
;;
判断是否给本turtle的评价质量做出过评价的节点
4 B1 @7 k9 w- i* {[set note (note + item j ([credibility]of turtle (i + 1)))
- V! R/ I5 G( Y  M;;*(exp (-(people - 2)))/(people - 2))]
3 j+ v  R$ B  t8 I* W
set k (k + 1)
' u7 W0 s3 ?% N* |8 k2 ?]. h+ S1 r0 i+ ?8 P# u
set j (j + 1)
6 D7 T) C$ s2 Q: J/ M]9 r* l6 k# G0 C5 N1 t
set note (note *(exp (- (1 / k)))/ k)
+ b" U8 K4 W' ?1 g9 rset credibility-list (replace-item i credibility-list note). y2 Y: E) ?: L" c0 l
set i (i + 1)
4 C6 v9 ]7 q: P: N3 E0 N]9 h: M  h  }+ z4 \- I
end
8 k3 X! r& r  a6 r
" m9 |; t) p6 ^* w/ I/ gto update-global-reputation-list
, [  W( h4 x/ t# Y! ]+ `. L' ilet j 0+ z5 c* M+ d5 h( g. `( L# w
while[j < people]' _* g! k: U. m. a& S2 F
[
3 X+ d# U) x/ L; O. y/ mlet new 0: B' }$ l$ H* @& O9 W
;;
暂存新的一个全局声誉" ]! N6 U4 t2 c
let i 0$ y* }6 L; O7 l3 G
let sum-money 0
5 q8 V- E2 N( {3 Olet credibility-money 0
2 L# v8 Z, A7 }8 Ewhile [i < people]
9 d* j0 b9 q& P9 ]5 m[# a' [* @6 H2 N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 C: g( B1 W/ ]: @, c. Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 J( F6 C$ O0 P' v
set i (i + 1)
- m, o0 y" K+ i+ a7 X]
; v5 d7 l' `7 r7 @; m3 r6 ^let k 04 z! i1 L9 ~- B' y3 B8 f
let new1 0: T( ?8 I4 d$ ~8 Q$ Z  b' Y; [
while [k < people]
7 h7 _0 h8 l2 F9 A[6 T$ J8 V( I$ B/ ~  y' b3 G
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)8 d5 m: Z" E' A6 k! T' p* A+ ~) z
set k (k + 1)- m- Q9 t% g" b+ i/ k( @/ H% E
]! n" Z9 [, Y' W: F% S/ w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 W3 b; a+ U# K; p
set global-reputation-list (replace-item j global-reputation-list new). {; f" h. [3 X; |8 i$ r' a' D* F2 {6 Q
set j (j + 1)  [7 @2 s! s! [
]: q! y' y0 d$ A
end
/ h- v: {9 \) ~* l# W- A' M! I8 _
0 G. r6 n# v" y$ u
) o; h$ H6 ]$ b( k
5 b2 w/ z7 g; a# f  l, Q: Dto get-color! ^" ~8 w. f6 q. S7 A7 q

. u4 ~( A- d; m" {' `( eset color blue

9 k+ e3 X3 {1 i; N( n# \# xend
# l3 p3 N4 Z  }
. j$ [# W1 A/ a& ?to poll-class- l1 ]2 g3 g: E
end4 P3 D7 c: ]# f! {0 L

  J0 P! P3 n) N+ ]6 I% u# \' X3 b$ Hto setup-plot1
( L+ n' t& c: p3 X/ M# z; ~  l
6 L0 x1 p+ D- H% d# O: X% Oset-current-plot "Trends-of-Local-reputation"
$ @! `2 K( j5 @, O; ^2 U

  X$ t2 T8 r) |set-plot-x-range 0 xmax

5 g$ I. g2 N- ?
! Y- j7 P( c+ u8 iset-plot-y-range 0.0 ymax

$ o3 b  R% A. k$ Dend
0 k$ O! m8 C6 x# Q4 e
, q( u* [; a7 j- g7 t% xto setup-plot25 K! ~" k1 ~6 \0 s6 A! y; i/ o/ P

7 x+ N/ ^1 |0 g0 x% Cset-current-plot "Trends-of-global-reputation"

7 r2 @, M! I" N9 D7 X) k8 q. p" V3 u+ d. S: K& Z! Q9 t" o
set-plot-x-range 0 xmax
9 G' i' l, i1 \) {- x

' R0 K9 @) w8 F2 U1 e8 m9 P+ Wset-plot-y-range 0.0 ymax

: N" o6 g" O  Q3 aend
! e3 j, r8 Z- A, H, c
9 |" G5 t  a5 J$ Lto setup-plot3
; J# [/ T% s2 L0 I7 H& o5 d- ~/ N0 u2 U1 D9 E( M; y
set-current-plot "Trends-of-credibility"
$ S8 s& m5 l* Q

8 K. G- N% J2 N. A. Vset-plot-x-range 0 xmax
  @: C2 q" w/ c, v

" B/ l6 W+ Q4 d  I8 |set-plot-y-range 0.0 ymax

( r, ~3 z2 }; }% D; L& Zend! W" w; @) a, K% U: C* ?

& K- M( s# ?% cto do-plots
, M! d0 w" c* L8 g# v0 Jset-current-plot "Trends-of-Local-reputation": ~  \1 F+ g0 O  x$ x8 n, g) u8 x
set-current-plot-pen "Honest service"* v% D; a+ }% m) l5 D+ m; K
end4 m, K+ d5 m1 F  f& j) o; h
6 y% h9 g$ p2 m1 K; w$ ~# _6 B
[ 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./ B" s- l1 }# }& n* w% Y

8 X- C, L) H4 n+ Q1 f& ]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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