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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 ~. R8 D. J% ?+ Z, [8 p
to do-business 7 T7 ^$ I) F( D- g3 U
rt random 360
7 ~- g  ]/ E! P, F: _) ?* ?- r fd 1* W& I5 f$ Q7 m
ifelse(other turtles-here != nobody)[
- A5 _! i3 C! h' p" i' {/ 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." h2 c, Q/ Y: [4 M( Y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ C( S, r8 i8 S" `* S& m7 T  O* ~7 f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& ~  i  Q1 c3 b0 L   set [trade-record-one-len] of self length [trade-record-one] of self% W4 a! x3 [- H3 V7 v! V% |* z
   set trade-record-current( list (timer) (random money-upper-limit))$ p$ t" h3 j3 k" ^
+ @  I9 S* m, b+ m- Y3 R
问题的提示如下:
& z# p* E* b8 N3 V* S
. {1 R7 Z5 @9 w( kerror while turtle 50 running OF in procedure DO-BUSINESS8 b& g4 g8 r8 T, p. O) A
  called by procedure GO
# n( E/ q7 M8 ]. }OF expected input to be a turtle agentset or turtle but got NOBODY instead.- H1 ^' a/ p3 B# c3 t( Y% Y5 x
(halted running of go)
- z8 ~* j0 o/ d% r4 m/ Y
! v. r; X# J' E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~~; y* g& F, m- S* {  u9 Q
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( V# z3 Y) ^1 x, a5 v, ^$ b
globals[
- e& X! M; A# C& i9 Qxmax
& B. O  e' t  f# w7 t$ Symax, v$ O' N/ P( J& Q8 N: l$ B
global-reputation-list
$ ?) w( S. V, r$ i( T4 h: R9 D1 t* @. V7 z9 R. ?; N
;;
每一个turtle的全局声誉都存在此LIST
1 ^7 I7 A$ J: ~: U5 fcredibility-list
; t0 S! l# J% U6 a;;
每一个turtle的评价可信度
+ X  ]6 i, N4 P- d5 Y7 f# [: nhonest-service$ u+ I% F2 ~" O7 @7 S
unhonest-service$ Y" d$ |) s3 }/ |$ `7 v  H' J
oscillation
) x. b- d) |/ |rand-dynamic  F. h3 V! ~- H  r6 r
]  J# Y4 V5 w4 g. I& P+ \
  _$ c% U6 A! O2 t- X
turtles-own[
- ?- N$ t5 U# L) {" Ptrade-record-all
/ p6 v. P/ D* q/ ~) \) y: K;;a list of lists,
trade-record-one组成1 l7 z, h6 p; a" f2 h
trade-record-one
9 M) Y5 M: P% E2 v* I, z) |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 b5 e+ M* w2 x& `% n( B# T* S+ [( z$ l- j. `( W
;;[
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 O4 z9 H: y9 Q6 |1 Vtrade-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]
! v  P! E8 ~  b* O9 ]/ S6 d+ ^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
2 }# E0 e, h; K4 f6 Aneighbor-total7 Z3 }. w8 n! i, V& m4 o
;;
记录该turtle的邻居节点的数目% ~. g8 t2 t  c8 E
trade-time2 m3 s2 s$ ]( m4 K
;;
当前发生交易的turtle的交易时间+ N" ^" i$ X& G2 {& _6 b
appraise-give
1 V8 ^7 R2 n* i$ I- y;;
当前发生交易时给出的评价) l; f* o6 P; F# C0 z: g3 N% D( B
appraise-receive# E* v7 L' [* h8 @" V
;;
当前发生交易时收到的评价
# ]$ k4 H, v9 {+ C& Q" |: }appraise-time) g' J; a9 S/ y3 w# y* _0 q" L
;;
当前发生交易时的评价时间
7 v* g- g- M" K! g4 ?* m' Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉5 @! s. P% g8 [( s8 h& v9 m$ y
trade-times-total
/ x6 u# ^8 o: M6 {' _1 _;;
与当前turtle的交易总次数: G; E: p$ W- H1 E
trade-money-total6 u  j; O$ a2 G( j; M
;;
与当前turtle的交易总金额
6 P/ x1 M5 e4 o, {& t. Q( Dlocal-reputation
  x9 g. B8 G$ w% d. _7 u" t) f* ~0 yglobal-reputation
; M' N1 w. q6 v6 e0 r0 icredibility
; b4 G6 E. l9 S0 R;;
评价可信度,每次交易后都需要更新
8 r' x  R0 ^9 y; `credibility-all  Y  i( x" V$ S1 a9 M
;;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
! U( M$ L  @8 l. t. V0 |' ~
0 M1 J* f3 R" c;;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/ s8 `# Z+ {* Y+ P  ~
credibility-one
  X+ g, w; N4 Q$ d" D( z8 r;;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, j  L- ~1 q+ _: ^5 q
global-proportion
9 @0 P! M/ J8 gcustomer7 ^; `1 _0 Y1 P2 _. l5 ^0 T
customer-no- L" g  r: f/ |: E$ Z
trust-ok
8 H0 Y8 M$ w5 f! K9 N5 w- {trade-record-one-len;;trade-record-one的长度, F' X8 d7 Z( r% `) W" c0 ]
]% m9 s' L0 ^) x6 w5 Q6 n9 d5 d0 d
. b' m9 `2 s# E- c! Q! }
;;setup procedure
5 j8 v7 h$ Q2 z2 n# @  i' l. W. ^! E" Y) R7 A9 V: d
to setup; r4 w3 a3 N& Q
" Q9 [; G8 s3 e6 C5 ]5 x
ca
4 M$ K% k: z4 I) x9 d, b9 S3 x3 |$ Q

) k6 V% l+ z, ^% j$ j7 S. ~initialize-settings
5 F% g9 q5 K* k0 g" Q6 J

( U  H# c' W: |crt people [setup-turtles]

$ v6 j$ Y& h, |, n4 V3 o  @: R' C4 M; g2 X6 m. I  c- h
reset-timer
6 Z" M1 ~; l# Y) N

5 h% |4 o4 o2 A" qpoll-class
5 @! j1 S& v+ w2 O: N. _9 @: [- N
8 ^) {- Z/ a$ ]
setup-plots

0 d, p' @3 G7 i- X% j0 k& N7 F4 ~% P& w/ W; q: x' M+ V" z8 g6 H! o
do-plots
; X. S- U( x2 h6 x+ K
end- [( g. t; p) G, l6 B

8 w; g& r2 e: k+ B7 kto initialize-settings
9 @. f+ T" U0 H9 P; N9 D9 m
& \5 R, x% {% n2 gset global-reputation-list []
& L5 ^; W% x2 y3 |, O$ |

: R& D  I1 S5 |6 V5 s/ ]  Fset credibility-list n-values people [0.5]

7 C7 R4 \; k: l- v- F& M  @8 c
' x" o+ ]/ J8 p, W# Pset honest-service 0
0 ~- W5 s8 B# ]9 m

5 r- C% G4 W: W7 ?set unhonest-service 0
3 f2 t! y$ Z* Q' m; R9 E1 w
- x3 |/ T" a0 L) K3 P4 C
set oscillation 0
; {9 E. }" i. p, V5 j" g$ G

! k' Y) d+ q1 t( U$ Z" Fset rand-dynamic 0

: Q, w- q# U# z( d- f9 t2 Uend: `( K/ [& d+ V0 J! b6 g

4 P, s' s1 u( r0 {( U( |to setup-turtles
7 P4 i7 h; v" f, {4 X; Xset shape "person"
8 r, u, o& {; n5 Bsetxy random-xcor random-ycor
1 s6 ~5 |. K' @' Oset trade-record-one []' }. m5 n& A$ {( [* i5 }
( ~3 ~. B/ o* ^8 e1 J+ R" @' H7 v, j
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 y9 W0 h- M4 g. v! ^* Q5 F

" \9 v# Z5 Z) k5 E8 K! s" H+ gset trade-record-current []2 J7 M( S0 x$ G3 T9 g6 t1 O
set credibility-receive []. U) b0 A, p0 w& [: g' k  Z
set local-reputation 0.5/ I3 j& Y  l, H6 J( p% @
set neighbor-total 03 Z: e0 z4 A# n8 S$ n5 O' T
set trade-times-total 0& G  f, G* N, T; v, @* C. u
set trade-money-total 0- w6 C4 Z" w2 Y6 w/ ^( Z; p
set customer nobody
7 J' q/ o) s7 f: hset credibility-all n-values people [creat-credibility]
1 P' K, r: S6 _: }+ g7 `set credibility n-values people [-1]
) M: W& i3 B4 L$ _get-color
2 R. ?. ]. U' _  A( s1 d
' g5 ~0 |* Y0 j3 [
end+ q! o+ C- o( }8 q; [( u
* E8 e+ f) Z5 U# a5 t" C) D
to-report creat-credibility" Q, z( M5 X0 v0 s0 }% T8 ^
report n-values people [0.5]
& v5 j) O3 ?; `0 D5 ?- send1 ^2 a, }7 m) G) Y) Z
/ l+ f) p  n3 B- P9 m0 c) t
to setup-plots1 X" j/ v% T4 M; c

7 H5 h" y8 ^4 C. xset xmax 30
( A3 v7 F, B! {- b' g: l

6 T/ u2 G5 y3 m' |set ymax 1.0

6 |: `" S' a" J. d2 t7 K/ E+ U" W; z* S; D
clear-all-plots
. s8 T6 Z6 P! Q( `2 _& o0 O+ F9 k
$ g- p% u2 @/ L
setup-plot1

3 r6 P7 j- u' _* t
0 ?" q( ~3 z1 z* n6 _setup-plot2

6 e3 G' {- U7 a( P2 Y3 Y: K3 @7 Y. g' }1 Z3 K/ L" x) l: K& `% l
setup-plot3

+ j2 F& X; a6 F% N6 Gend
$ M' o! x1 W# p) F; U. k
9 s. H. T5 Q; v* n% _% m;;run time procedures8 v5 H% b9 }9 W% B" _' c

3 Y# \& h/ H0 l2 f/ X# sto go
9 V& x. F) N6 d" F3 Z! U/ K/ l% L0 e  J2 S0 u
ask turtles [do-business]

$ T( C& q6 W: O* P9 r& Nend* g5 t; \7 O6 L+ J4 x
% |& W1 q: t4 _/ ]: O
to do-business : L+ I! k" V, w" V, l: V  M

. l. n4 g! a2 x" h5 p% Y  p" d* L4 W5 G* ^9 M7 u3 Z
rt random 360
+ d3 _' j8 v$ _
1 }% A# H1 F3 l& ?7 @
fd 1
/ T0 a0 X7 E1 u( E

% s% J  y: u9 f9 [) b9 d6 Aifelse(other turtles-here != nobody)[

- T8 Z9 a  l0 r1 |1 {5 M% l  g; ~9 X+ T, @) k6 t
set customer one-of other turtles-here
* `0 M$ B! s2 Q6 b  |

/ ]$ Y/ n- ?, `;; set [customer] of customer myself

$ n+ ?& F2 m& `" i- n8 I6 ^( G
. F/ H4 n. D- d7 U/ K$ L6 uset [trade-record-one] of self item (([who] of customer) - 1)
, i% r' l4 _2 m[trade-record-all]of self9 F. E1 k. B- b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 D1 ?% J2 ~/ m# W3 a: z) O4 |2 Q' \4 {1 v# D; b5 R
set [trade-record-one] of customer item (([who] of self) - 1)4 h( s2 z! ?6 f* g4 ^3 B
[trade-record-all]of customer
- {1 H! U. g" F3 O8 P3 |
7 d1 y. z! \# `. i& K
set [trade-record-one-len] of self length [trade-record-one] of self

' F! K! b9 B3 o" o  _3 v2 v1 \, C, j6 t, }) P2 \. ^0 d5 x$ O
set trade-record-current( list (timer) (random money-upper-limit))

' z% H" K0 x& ]8 Z6 F
! d+ C6 M  J" C' u! Wask self [do-trust]
& N4 D- X/ O% Z; c, |;;
先求ij的信任度
( G& x! _9 X( ?% Q; P" h* g+ d& m( X# i, P* N' T/ v" L
if ([trust-ok] of self)$ e; o& F0 P  Z4 k
;;
根据ij的信任度来决定是否与j进行交易[% K/ k9 Z6 Z8 z8 Y" I- C
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. p. t+ l& O* s+ T" w+ S# P

* H  h* K; c- H! P2 I; V& I[

$ w0 y5 D# b$ j, P' t( s) a# ^
, M4 V# S: c( n3 Hdo-trade

1 s2 y: N5 P% y# X, R% h) Y1 o1 i- k. b/ C
update-credibility-ijl

* W$ I' ~. Q, r+ K- X( V3 b3 `
+ y% @7 W8 c$ e7 \+ G+ qupdate-credibility-list0 L$ _: `7 I. L2 i

9 x# v$ o0 {% G  r. S8 d
$ U: P2 Z7 m4 F4 rupdate-global-reputation-list

( G% j3 |6 H6 A' u
8 V7 V4 m" G/ v, r( i8 c: Vpoll-class

9 F4 N' J' y" ~3 _; f
6 }' o( i' [7 e3 q0 S" Nget-color

" O5 Y3 G6 q: C/ j6 R2 z
6 r9 J5 ?% r$ I6 v# M]]( x% d, _3 u( Y- b7 B

% B! E: A0 ]" Z# Z% p4 i;;
如果所得的信任度满足条件,则进行交易& W- T7 i, H+ e) ^
8 P" c: X! I: _
[
# v+ _3 o3 n4 C' G) Z3 `
% t: u3 |; _) a9 o& Z6 v
rt random 360

. ^* L! y4 r3 d; T/ l$ ^9 }! C' e  |* E7 ^( \
fd 1

: O: |$ o1 k& b! u4 s) D( Z4 z
5 N" v1 I9 a1 L* y. M& O+ T]

! p7 V0 f; o4 t% W4 a7 G
$ K# M0 [' ]6 U9 z/ o4 Lend
& U2 z7 p, {" {4 @8 J

2 e1 x3 Z1 o0 [* E/ J# k. [to do-trust 9 C, s* @! A2 y) Q: C
set trust-ok False! Q2 l2 B6 z# r# _" E1 S

; |& Y  i" |2 N2 C& H
( x) y4 ^+ N$ K1 G
let max-trade-times 0/ O1 U) c& T; Q3 r2 s& A" R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# s+ G2 L8 F/ h) q. l  H7 Z
let max-trade-money 0
7 u; W7 P  ~( i# M1 aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& Y+ d+ e% x% d1 z9 v
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 g# B( Q2 o# [1 c* v" x/ J  D% v$ y

! }; B$ v8 p5 f+ p9 P7 \" Kget-global-proportion/ p0 ~7 S8 a3 z  a" G  C" G
let trust-value! Q  W2 A: [0 q0 R
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)

# J% B" t& p. D& Qif(trust-value > trade-trust-value)
1 K5 {4 j8 p* H# l[set trust-ok true]
* ~+ L0 r3 t* Z# q+ s: Rend
$ Y) Y& M# i4 @$ q$ ~% ^2 V6 x& E. B* C* {
to get-global-proportion
. M) s; w% ]+ S6 ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 s. C) C/ P* M+ C[set global-proportion 0]! J: g1 U* r2 X. L. R3 [4 z. K
[let i 00 |0 N7 |' K2 a1 d+ b8 F8 W. i
let sum-money 01 E3 U. B1 p  M0 m
while[ i < people]" i7 x' i3 Y+ ]
[
9 V  k) s) {9 ~" Wif( length (item i3 C+ l, R6 P( c/ {
[trade-record-all] of customer) > 3 )

" N& \- U$ y( j, Q3 i$ [[
% q- S! m( w! k. {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 w% D: V9 P8 I$ Z$ j/ ^; ~]. v$ L2 O* D+ d/ F
]' u# @- ^; J% Y& j' |- \
let j 08 f: j9 P, ]% N+ Q: t/ g
let note 0+ F: _& [4 [+ q, {
while[ j < people]' ], ]! I2 T3 A& H& V5 F
[8 K; ?: q& Q- |: j
if( length (item i: c- c$ o: v/ C  x
[trade-record-all] of customer) > 3 )
; c) Z# N* U5 H
[7 l' x: y% {3 ?  n9 i  ]% t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); u/ A2 b1 g8 ^3 b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 |1 g- d9 h, ^) V2 r2 V6 r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ h2 I# R/ @; }$ C  [
]0 M/ p$ E0 T; u* E
], t' A5 t' X8 e8 i8 b* J0 [
set global-proportion note
7 l: T9 ]# {. C]- I" W; A1 \- S
end
# G/ [; {% N4 z1 L# e1 f+ M# y, x4 R4 j4 N* z. M
to do-trade1 S+ @5 ]7 ^  G3 w/ }
;;
这个过程实际上是给双方作出评价的过程
( [/ |4 n8 j! P: I( fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) V  E) \  D1 c4 G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ k% R- y3 L4 N9 Q6 g( Yset trade-record-current lput(timer) trade-record-current. Z7 ^; A: M. W  z% g
;;
评价时间
. n0 Q: k1 K4 jask myself [
% f, ?4 W: k/ u8 [3 A7 p5 gupdate-local-reputation/ N: i! G% O7 G8 P
set trade-record-current lput([local-reputation] of myself) trade-record-current! \" e" j* Z& {0 h" j1 B
]6 K, k' y# _0 O% j! `9 X) \4 ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. j/ m5 O' T5 M$ n5 \$ G/ W( U
;;
将此次交易的记录加入到trade-record-one
) @: @0 q9 Q5 k7 Y% d6 fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 {) e1 R0 A2 V$ C* [. R
let note (item 2 trade-record-current )" S8 Z$ ]5 u' D. Y, G6 L$ X* o
set trade-record-current
, A  Y( R/ C, ?7 f: @(replace-item 2 trade-record-current (item 3 trade-record-current))
& w$ y' n3 v; r: |1 `+ y$ I2 w
set trade-record-current2 E( V* u% `% R0 l) N, ^9 I
(replace-item 3 trade-record-current note)4 y0 Q/ t8 E6 k  S/ |6 x, D

, {: \( L2 D3 `" ^! W8 b
& n/ m8 E9 C" r8 k4 I
ask customer [% t. C( W2 [7 a
update-local-reputation- m) Q, `; u; N6 o! k' q
set trade-record-current# u. J& [& t' W$ s# o$ ~
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 P6 e5 K9 N! |( a+ y2 q1 A* `; \
]' ~& T- {. l6 V  p2 |% J

) }- l" c" U# i% }- h

+ {( I1 c: H) i3 B( `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( A9 f7 J6 F/ g1 T/ D) F

1 r) w& @; q: L# [- z) M8 j! Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- i$ i5 y4 v2 J( _
;;
将此次交易的记录加入到customertrade-record-all) [& x# i$ g" }! u
end8 g; H; a; x; {# w5 g3 I( j

3 ^5 ?$ B6 v; S1 N, M2 A: i2 t5 Eto update-local-reputation
0 g$ n  I* Y) Z+ p7 s7 Dset [trade-record-one-len] of myself length [trade-record-one] of myself: }# X3 l; [2 }" W$ m3 w" K
% P5 h9 L- N( i# U+ L) ]
3 O1 n. Y3 C9 R0 N  m% n
;;if [trade-record-one-len] of myself > 3
) V! I* z2 @) N$ I
update-neighbor-total
6 B, k& T# V& H: A8 I( Q1 k;;
更新邻居节点的数目,在此进行
9 w' V  P. U- x' alet i 3, G. L8 |9 ^# f8 M' O) i
let sum-time 07 p, A/ X4 C, x1 _
while[i < [trade-record-one-len] of myself]" i; E& }1 ^/ k, v4 m% ]4 x% O
[3 v. J& Q( t& f1 j- y1 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ {% b: F8 a' \) h" ^
set i
$ z& i+ n2 T8 q9 R9 M$ L5 o( i + 1)
& P9 A, ]; A3 y/ y( L7 i, ]
]
# H5 \6 G; Z* Nlet j 35 F% ?  W3 }: ?/ k$ o0 W
let sum-money 0
+ F3 H8 K6 b3 [0 v0 ?while[j < [trade-record-one-len] of myself]
$ w+ @3 b9 B2 r% f: L: z[
- l! u- R; d# q+ {+ ^7 j& xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 m; f" H8 P: h" S* h% I
set j, e" \& Q6 ?% o2 Z6 G- C$ H2 z; b
( j + 1)

2 _( K( `1 B8 V: p' Y) c$ v]9 a/ y( N4 S) x3 p
let k 3
6 g: G, U- e% }8 G3 qlet power 0( h8 }* o5 i5 _+ Y/ X
let local 05 G% ^2 E9 D! j
while [k <[trade-record-one-len] of myself]
9 }' y1 ~+ V& p8 @+ y6 i$ S[; h  m" f- j  u, z
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)
; f0 T3 r/ F# oset k (k + 1)
4 ]' V/ v1 P" M]5 p) d/ [2 ~2 f0 f) N
set [local-reputation] of myself (local)
! ~4 G" R' x: B- h+ ~; y8 tend8 p$ H. r, K; }, g% g4 p0 K: G

; h5 R% q$ {1 e; nto update-neighbor-total4 E% p7 [7 g" n% a, U) O: ]$ r( F  O

. d% `; E  \5 c" T/ i1 \* mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- ^1 @4 |# S. a5 I6 n- o- {
* J  k1 H( o& j2 P5 I- L' \
& a  T& Z+ U: Y& V: w
end
5 \/ Y, f; {: t1 U$ L! r- {, b! P6 X% X3 v
to update-credibility-ijl
$ |( s! L( x0 F/ F- d( `+ Q9 _' R! s" E3 E' v3 W
;;
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。& q- }* i. i- y6 n2 k3 Z
let l 01 _1 f+ J4 W" ~  i& n3 T6 r
while[ l < people ]! C# L7 p& R( j) M
;;
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
" c2 u  ~( `9 V. P[4 {" d& e( E* i4 s9 B0 v& ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 t* R( R5 X0 y# e, Y
if (trade-record-one-j-l-len > 3)
( Y" Z1 D) }; U2 u; `. z[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$ a, J) Z4 n; ~3 R
let i 3
0 c' `5 e/ y" H. K% j& klet sum-time 0  i% v+ E/ o. m6 D
while[i < trade-record-one-len]
0 ?3 L; ]3 S1 d! t- ~* g1 N" m3 g[! P0 y% q: Y$ l" ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ a! A; N5 B9 g/ O6 F, ^4 A  c
set i, e# R2 s3 a) s
( i + 1)

4 |! ?' U% f3 M3 l" x: t4 l, s]1 N! O# B- z# W+ C
let credibility-i-j-l 0
$ F; M  u, c4 e3 q! ~8 F/ Y# x; V;;i
评价(jjl的评价)' R7 L& z! P2 m# `* v% F5 v
let j 3
! F5 f& w: N  @* y0 F0 J$ D) Ilet k 4# L( g- p0 _1 X4 X* q) j
while[j < trade-record-one-len]! Y* B. i4 v. r& r  ^
[
0 w( u+ J& d" w  U7 Uwhile [((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; F) {/ C) z: w
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)4 ]+ p% y3 {  a4 @& C; Z4 G$ c
set j) q3 ~; O" Z- y. a$ r1 l7 n
( j + 1)
+ C$ U0 u3 ?! @: c3 W/ l
]
0 p& v5 r1 _9 u4 qset [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 A) N. [" o+ G$ x8 }
/ g4 L1 o) G2 P8 I  H3 Z: K" A4 W

$ u  B: `# H7 }0 _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ I  k0 u+ s4 j4 F" ~2 [
;;
及时更新il的评价质量的评价
. T, r/ I& z  M/ `; q# c3 _  wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 A- O/ N* b! x8 wset l (l + 1)+ B5 i0 g# _2 G
]+ h9 J$ S& b: E: |% b; P+ i) s
end
0 q! g* t. D+ l
5 D! L- J2 @# o2 P2 J" kto update-credibility-list2 F# d& ]% P% l9 N! t
let i 0
2 V% A+ ^  ^% A" Y7 C3 Wwhile[i < people]. ]. R  J$ C+ E0 b/ C7 }
[: W. |" I/ E7 t, u! Y" ?( W
let j 0
$ k) S/ A, t( \. `  ulet note 09 W- q+ p! D4 R, O# u2 g
let k 0
3 m+ K2 d+ q3 u0 `;;
计作出过评价的邻居节点的数目
8 M- |( A  e1 wwhile[j < people]
0 L- }8 s& o, L8 ^. E[) y  k( ~$ n" Y, {- F
if (item j( [credibility] of turtle (i + 1)) != -1)
% v4 y) M4 s# x/ n! r;;
判断是否给本turtle的评价质量做出过评价的节点. R  f. ~3 N' s5 N+ C8 x
[set note (note + item j ([credibility]of turtle (i + 1)))
/ o$ w$ W* @5 }( n;;*(exp (-(people - 2)))/(people - 2))]

  I% {, K' S9 l/ ]set k (k + 1)
8 {0 B/ e" t0 b, X" @5 v, Y]3 u0 }$ j. m  W0 J) ^; G/ U
set j (j + 1)
8 y6 _( D" X0 E8 X4 ]" e) j]5 z9 H! t7 E5 B/ R+ O( r
set note (note *(exp (- (1 / k)))/ k)
) S  w; H1 z4 @set credibility-list (replace-item i credibility-list note)$ v: [+ h: k3 u3 F" w* K
set i (i + 1)9 C: F6 l6 S6 l( I
]: ^' g" Z, }& e" ?
end
; C, R( B* K! D0 I8 q
5 C! I# |+ W8 U/ R" Wto update-global-reputation-list
( J- s$ E4 E3 m; B$ t) E/ a5 a' olet j 0% W; |& `- r  N2 L
while[j < people]2 c' x8 B. k9 k; U5 M, [
[
6 U3 O: v$ c: a6 N2 Glet new 0& h$ c+ \5 H; L) A9 H, t8 E  N
;;
暂存新的一个全局声誉2 }2 y7 q( p% [# ~
let i 0) D& N" v. K  S4 o" P( T+ u
let sum-money 0+ N) p2 l6 C, \6 b7 H
let credibility-money 0
+ i( F% P5 E# bwhile [i < people]
1 v" B5 q: W  B4 K[
6 P' v  e* p- H1 Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 S0 C+ J$ N2 H' E  f( Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- g9 X- P0 E/ R2 w, Y
set i (i + 1)
. L; H4 a) k6 z& F0 E( g$ P; P: a5 j]. S) p' q% s; d% d. d
let k 0
' K) w# G0 O1 p% w1 H1 [& b( plet new1 0
. G& |. m$ s# J& n2 K+ fwhile [k < people]& ]' K/ K* ]0 V% n
[
. v/ u2 J; O" P) t" @/ yset 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)0 o) b8 M8 s( Y9 P0 X5 g. N
set k (k + 1)
3 Q* ?6 ]6 m; v/ d) q5 B]
" }9 J( L; Q: ^3 z% Q  {3 a" |8 cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: y& T& a4 ^, hset global-reputation-list (replace-item j global-reputation-list new)+ O1 v3 B0 @5 q8 e/ t
set j (j + 1)1 P! B# l1 X( \" z
]
! a0 }4 G" ?: N" Kend7 D) P, L8 c+ P9 a

5 C; e' ^+ k9 }2 K6 q' Z8 k" c8 X  ?
/ _+ N2 ~  [) r, @; O( e+ E. C0 M7 Q3 a% ]
to get-color
9 o" i' C' a! ^1 l( i
9 D1 f9 C* E8 W& f" Y7 H6 ^/ U  Rset color blue

4 ^/ W% O4 P$ N( L+ u5 t% s3 bend3 K' E: T- V, t
* ?8 G; o- t5 c2 g1 o
to poll-class
; _8 o. n  z0 bend- G, j2 x5 J; W

7 e  k8 C( y! G3 G+ I3 A+ e+ wto setup-plot1
9 E3 }7 }' }) J, ]* M7 U' {7 W% L) |# P. S& r' f) l
set-current-plot "Trends-of-Local-reputation"
+ l% k, _5 P2 ?  F# L& P# `; O
) F& ~4 t3 F5 C- [4 u5 |: t
set-plot-x-range 0 xmax

8 {. R6 M8 Z) v- o- M* X1 O) S1 F( T+ {, B0 `( P7 M
set-plot-y-range 0.0 ymax

2 |# x. |: P1 Y* fend+ ?6 w7 }+ D" d# M& O7 V
! |% o5 m5 J2 p: \5 s
to setup-plot2
3 }# r  e* ?# X6 |7 |- l5 Z& {( B. }7 D
set-current-plot "Trends-of-global-reputation"

2 x6 N4 q5 a! Z- [9 l+ U: v% F
+ W! p, A4 I. b2 Xset-plot-x-range 0 xmax

, L& [1 l$ h5 ~0 g  `. V! \/ }! z- ^/ L" e) J  o) O8 l! P
set-plot-y-range 0.0 ymax
+ R- X3 P" m% I- k- D" F, A' _% \) z( s6 u
end
2 [) O; i, c% W4 k! Q4 a; }2 ?
  R! b" X& s. h' O0 r( Pto setup-plot3, c% F! E' U1 F% T5 a5 b, a

7 z! y& Q; k( k1 r" g7 mset-current-plot "Trends-of-credibility"
& F( l" ]- ~$ b/ ~4 o

0 r+ g! }# \; Rset-plot-x-range 0 xmax
% g+ g# L$ U* X$ ], Y
: D8 `- Z% `4 u
set-plot-y-range 0.0 ymax
6 }4 z* l" F+ z, y) ]
end* k5 g' b1 @0 r( k, O7 r

/ k( r+ N( z1 n/ P& |to do-plots9 E6 @# ~0 ?& u  b+ n
set-current-plot "Trends-of-Local-reputation"
% }+ g- N3 E- q* rset-current-plot-pen "Honest service"
6 I  V* j6 K; O# J, u4 s# qend
9 y9 a1 U' m% o4 e$ j+ X, T/ w3 S- p7 F5 ?: F
[ 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+ r+ q+ {0 N0 [" b' g/ }- H0 B, y3 |
2 X& \( `5 i- M' |4 ]
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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