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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:
% j* l% c+ O# o; C; @! m$ @! a$ a8 kto do-business
0 u8 ~5 O' W, s# ~1 k$ q$ F' u rt random 360
" U5 q0 I* N! G7 k' D fd 1( B3 [% G. p' _6 k7 S) b5 M% t0 [
ifelse(other turtles-here != nobody)[
" x" Y, `; k8 M5 q% v   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.
) @$ e0 ]3 f1 m+ T4 B/ g0 _   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : G) o1 |2 W4 \( o. p; C, |$ b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 N6 [4 M( }( P, o   set [trade-record-one-len] of self length [trade-record-one] of self
7 [7 }/ x$ A0 _2 ]# u   set trade-record-current( list (timer) (random money-upper-limit))/ Q" R8 `* i# q4 u* {# l. d6 D1 \7 ?; \

- s3 M2 a5 n; h8 b问题的提示如下:% B3 q! y0 R/ T$ m) D

' i1 D* i7 D/ w% a% G+ ]error while turtle 50 running OF in procedure DO-BUSINESS
$ ]) L5 ?  |0 D7 v$ ^: l' j- k  called by procedure GO
, ?: w  G- i' R* OOF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 J: G: c/ m  t3 J# A1 R- Y- t/ e1 W
(halted running of go)
! `7 p1 j/ ~. b, A; N$ g# m) I$ ~8 S2 K
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~~1 I& I; h$ }  z0 W1 _9 D& I  _  B
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
% F& g8 X  C1 Eglobals[1 v; j1 b0 F8 l/ |; k  l
xmax5 y8 M. ^0 b1 [% k9 ^4 o
ymax$ g; T4 Q) c- `
global-reputation-list& |( a! u# y; O0 Y: R$ `

8 u' d! i  T/ |# ];;
每一个turtle的全局声誉都存在此LIST
) q2 _1 v4 O. t# O" W0 q3 N! Mcredibility-list
& f# [# N9 ^0 ]. m  L) j;;
每一个turtle的评价可信度
  Z5 r7 D% R# p3 w$ G3 vhonest-service+ h, Q# A3 S% e7 G* O1 z0 G6 ]
unhonest-service, j& s+ @- G  V9 ~
oscillation: [; H6 l$ x5 ^! J
rand-dynamic' w7 F+ T3 B/ J3 A
]
7 @& K2 T  n5 {. j$ o  @9 v3 v8 N4 r9 g  w: k& B$ F
turtles-own[
- j( x2 X. w; C9 V4 M7 [6 {trade-record-all2 J  X4 v; V0 J: L7 q6 B* G
;;a list of lists,
trade-record-one组成1 E  h& |9 @0 l0 |" X
trade-record-one) S, L5 P1 ?" b6 ]4 \& e
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' u6 ]5 D% T* I$ ^& X  v6 @( Z7 Q( f$ ?4 f
;;[
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]]+ o: i, a2 ~% \! u
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]
0 J& x, C/ }- T" ?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, Q: v' T  N6 p/ J
neighbor-total* S' g* k0 \9 \* F
;;
记录该turtle的邻居节点的数目, Y% |8 T) V% {4 o; T6 I
trade-time1 A/ m1 n0 L( X0 x
;;
当前发生交易的turtle的交易时间$ h) r# E* Y7 S. T& [4 e3 e* G
appraise-give0 _% M' g: y9 n# G: P) s
;;
当前发生交易时给出的评价/ \! u$ ~" {: k& U$ D4 D* T: _
appraise-receive6 ]* [1 T1 g; |0 C
;;
当前发生交易时收到的评价
" e- S5 W  ]# s4 jappraise-time
% S% C' v9 P& m: P) }4 ]! d) Y;;
当前发生交易时的评价时间" p( g  r, J/ ^- F) Y3 m9 \- v" u2 \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( B4 U: ~4 p$ }9 c% Vtrade-times-total" m' z. z. e- ]1 |. f
;;
与当前turtle的交易总次数
8 n' K% s" Y# H' m, T- k1 R- Vtrade-money-total
+ q# @! D( _' V6 j;;
与当前turtle的交易总金额
0 w/ |1 A1 y% W, U) @0 \7 n! z2 ]) Clocal-reputation- ~5 @/ v8 @, ?5 T+ W1 A
global-reputation% x9 N/ A8 _: e9 C* `) c) A
credibility
2 T* o2 P# N# P;;
评价可信度,每次交易后都需要更新
  p$ M# P7 a. q) |  }$ K" ]credibility-all
9 Z+ Y6 @' Z/ F6 e/ j;;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
4 p& N2 R) u( ^0 s7 t3 ^; V9 M( H
;;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$ W0 e8 A8 F, ?* N
credibility-one
1 n2 q, W/ {* F5 f;;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/ N# f' e" y, e- C0 iglobal-proportion
2 m8 Y3 x4 `& m+ [customer
" f& v% U9 I6 [1 Z! f/ q" Xcustomer-no& F% p6 w7 A0 K/ H, R
trust-ok3 b6 ~( ?0 Q' g7 T" B6 z( t# Q
trade-record-one-len;;trade-record-one的长度$ D, D/ v) K' [- j4 z" U$ a! b
]  N  D4 z2 t4 T! ]  a; m
  I4 R6 i; C( Z5 ~# s* N, F; @) A4 b
;;setup procedure$ `% t( r6 p$ U; Z9 \9 ~
6 e, x- L4 G, a& \* m' ]
to setup* ?  H% q$ a+ c5 u9 _

$ A$ q% ]1 ~! Y2 v5 N) @( Oca
5 B4 N: c; S7 E* E; t( N

+ L' A5 i, `: g0 b2 f% O, ?7 Tinitialize-settings

" s- ^% o, M0 \6 j( d& }
5 R2 o9 h$ {% F5 l- c3 W% I! kcrt people [setup-turtles]

* U& U; e' o/ }+ c* H: C6 F5 s" q3 G/ g+ Y4 A7 X7 g! X; [; t
reset-timer
! J" }# J. d! t6 W# u+ Z
& u9 p5 V& Y% s
poll-class
& n! q4 [" k- K& N: P% d, Z, U

# l# j! B. }& j( S, zsetup-plots

# {# r5 D% R$ @" D! V3 T; F, T4 ]* F' i. L  `# n
do-plots

8 {2 l/ e% q0 G  a8 `end
  O; I; c- `: i) `2 ^8 f/ z& F  D3 p4 ]$ o" B5 W* F5 s3 v
to initialize-settings
( }' q0 e; Z/ d4 h5 U3 G8 f  f- T+ K
- @! L0 Z# _8 N: F9 N8 L# J* eset global-reputation-list []
  s" V, S) W6 [! W( P
# v: m9 x6 x. z: Y# C, V
set credibility-list n-values people [0.5]

. g- u- A6 B. V- r0 A$ }8 B2 b# D: p( c" r8 ~
set honest-service 0
" e' G2 y8 _) [- @7 P! @: A6 e
, {. J* r1 l% I( A& a5 I
set unhonest-service 0

! k2 U# w# M: `$ {8 I$ }4 Q' @3 |4 X; [# l, f. e- \# ]5 S
set oscillation 0

: j" s- O" W; k6 E$ V+ X' g2 g+ e4 r6 J
set rand-dynamic 0
' G2 l8 d( g$ a# H
end5 G* ~- R- I0 H* K( i, c
# c( d& m. C+ z3 R$ j! p
to setup-turtles
! _, z2 @) o1 P* w& d$ A) @9 I9 |set shape "person"
' R7 Y/ C4 m+ R# l1 q; Osetxy random-xcor random-ycor" b( t3 a4 w3 g# _: e+ e. g0 ~1 Y
set trade-record-one []! W4 ~- a; p1 P) C
; \- X- Y$ j5 O% I$ E
set trade-record-all n-values people [(list (? + 1) 0 0)]
" `3 `+ [" l; {7 `& @

4 I  Y: O  s* d. Mset trade-record-current []
; O% \, D3 p. j, T5 S- kset credibility-receive []/ J' @) A# j: X. e
set local-reputation 0.5
' u' V% g4 I# }8 b! ^6 Dset neighbor-total 0
5 N) ~* U4 b" x0 e0 {9 vset trade-times-total 0
3 D$ h7 N+ b; nset trade-money-total 0$ }  _) ^7 F- {8 Q4 M- T0 r
set customer nobody# j$ U6 y* d6 Y0 g/ d6 x. t
set credibility-all n-values people [creat-credibility]
, F5 P/ r. A6 `. |set credibility n-values people [-1]
2 M7 H& _/ V, b$ j, ~0 z, Vget-color' g0 ^- D- Y, Z/ U8 ~- g9 p* W+ [
& ]& |; Z* x! ?' s
end
$ l7 X; ~- ^  I- C& n) U5 c2 F2 R/ P/ N' K
to-report creat-credibility, f9 m4 [1 Y$ `5 A
report n-values people [0.5]
$ Y) K/ M- @8 y' Aend1 p- _* @8 X  M
9 v2 J+ b$ G3 p5 ~
to setup-plots5 v# P) u' ?: {, S& ?

5 Q+ \, q) D+ C* h/ e: i, z% kset xmax 30
) l. k9 {* y0 a1 b* [" E% S
2 r7 v2 y/ W4 p0 @0 G/ M1 r
set ymax 1.0

; S; ~6 r' q; c2 Q9 T
7 e& c$ i( B( Gclear-all-plots
2 j* n/ E3 ?3 ~9 v
+ O1 ~' ?: }* o* t: f
setup-plot1
" s! L4 @# B% N0 S1 a
# B, l0 ^. A  V! r: o
setup-plot2

$ K/ m5 F, T+ |2 `# y1 P6 X4 z2 H+ o9 X' t0 h6 a
setup-plot3
. ?/ m. M% A" u
end
% L1 e6 t+ @* E$ M- V: ~4 N/ F) h6 l6 A6 F5 X2 [4 A
;;run time procedures1 @& R+ y( [; {2 Y& ~5 s3 ]# R2 t
! o. r6 q+ t" w: m
to go
' [7 S  p3 @; G& ]& z7 X# b5 i5 M
* J: a$ p5 K. Task turtles [do-business]
4 E  G5 h1 g3 V. G8 g
end; ]* K" D! ?0 |/ x
$ ^  N1 L3 h; E8 `
to do-business " f9 v/ ]2 J+ \& |: q* i: u. J

+ k6 g3 V# Z0 \' U+ q1 m0 \* p6 y" m+ ^% M; p+ S: s, ]
rt random 360

- C* g1 |) S/ d- A" x2 s4 @  h; ?0 S9 b/ S0 l# g' L; j
fd 1

2 g9 V- G& V+ ]! N- T9 H  s6 Y( Z# E1 v1 ~# a) _3 l9 B3 ]
ifelse(other turtles-here != nobody)[

  J1 P8 a% p, ^6 o& z" z
" v- r: d' G5 b: Z2 Jset customer one-of other turtles-here

  {) ]$ R" [( M- V  g. |- q
, }! G* }7 {" ^2 B# t;; set [customer] of customer myself

8 D& _( K9 f1 G6 ^, q1 h
7 z( x6 O* y. I, }- yset [trade-record-one] of self item (([who] of customer) - 1)% T& t' W7 e( l/ N
[trade-record-all]of self
) q$ H" T0 X/ {7 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ i' u* l9 D9 O5 W, m- V( d

! ?" M+ P9 \. e: g' xset [trade-record-one] of customer item (([who] of self) - 1)2 f: W' L* }- D! s
[trade-record-all]of customer
* z2 Z& @% A5 H

/ R! |  g5 x. y9 Yset [trade-record-one-len] of self length [trade-record-one] of self

- R  S  n; @6 H/ @/ P
4 b0 V% }1 J$ K) \set trade-record-current( list (timer) (random money-upper-limit))

8 D* `: Z* u" v) R8 A! ^2 f4 Z4 [" ~# s7 a, J! d) t
ask self [do-trust]! c  P6 b8 z( f: ^
;;
先求ij的信任度
4 Y1 m" K' i0 @4 K! u9 O% R
9 d1 U* h( \" C0 C7 |3 X: gif ([trust-ok] of self)
# `8 y5 A9 L% k. U; U/ |3 J;;
根据ij的信任度来决定是否与j进行交易[
! s  p3 Q0 `. \) }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) G! K% T3 H/ z- a; d( D* i! H" i7 J' Z
[

& S) R$ T8 Z: G. G% v* ?/ _+ H! z, c
do-trade
8 Z, j6 S/ I" S$ D+ B: J. g% s

- |- E' X5 Z: x2 m% G# g3 \, |update-credibility-ijl
: S# u7 f$ h9 E3 r
' X4 _( g( ~5 n; \
update-credibility-list& k/ ], k/ u: h2 A7 K% L! s

! N+ ?4 ?/ c% w5 Y  s6 ?
! r# V8 Y6 s  z, M& I0 M+ gupdate-global-reputation-list
4 Z6 j0 c& b' V/ J. M

; g8 Z$ H" K- x2 y2 Bpoll-class

; A4 ]+ M/ d5 A0 M3 G9 J6 u. S
. G! |4 r  `5 s5 O, X: m5 S) U" Wget-color

7 E% x5 U3 C# }' o6 W1 e: q1 P7 q4 _. n' [1 g, y
]]8 e% E6 o' i3 A, \1 Q- b, R& ^6 |

% _+ Z+ X: {3 p* w# M;;
如果所得的信任度满足条件,则进行交易
0 D1 x& b) R3 y3 Y# \+ ?, G( M( R- f9 `5 R1 P
[
! m5 I8 j) ~# R8 [

- O) G  m/ k$ [' }( F0 Ert random 360
+ n  g3 T' L9 i* s
1 o, m4 @$ q3 ?! S- g! T
fd 1
+ }& C$ o! G) g, l: g+ G
7 u5 m9 x, Q- q3 }6 P0 R
]

. N+ w2 i+ v, X; R4 Q$ x9 |
: g9 G, V; n" x5 t- Jend
7 D& h' a! T7 r3 ?

1 J$ B. i) I+ \0 {, Sto do-trust " f. F: C. ~( h9 Q- r
set trust-ok False% N; r( U3 H4 y0 s4 `7 L  f
/ ?0 u) T0 U1 k
* G7 p5 r" p+ J5 J
let max-trade-times 0! _( H* O& t7 J7 G4 w4 C1 M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 v) ^3 n9 q/ X& L* |
let max-trade-money 0
; Q' B" F1 Y' n9 n* Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 C0 J/ ^9 g" N7 w: O$ h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; F+ g0 ?( Y1 z  c( c, m* m" v2 F8 D7 c# @/ O: W8 {: I) f

0 l& X" Z$ h7 c9 t2 @get-global-proportion
" c5 b2 u6 t. ^7 D0 O& Mlet trust-value7 R7 m8 y# F& H! h7 b
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)

4 W+ t# D: a) yif(trust-value > trade-trust-value)
  i; P  V# Y- d" q# O( C[set trust-ok true]
2 }( X) g  Y/ J( c0 L' Jend$ U) G7 d0 D0 ?* O
2 C0 A' c1 Z0 K- }
to get-global-proportion+ q% R/ |$ g8 F3 T6 v# C, E6 O1 p& }) d
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  C, j0 l. L3 v7 j5 \
[set global-proportion 0]7 T$ \/ V4 F5 T( m
[let i 0
8 C$ \* S4 }4 m- L# q8 Clet sum-money 0
. B! W& h% @& a5 B. V/ K8 `while[ i < people]
/ L4 q( R6 N+ b* \[
( E3 v# l) f0 B. k. h% y1 Pif( length (item i
$ Y& }! F7 L8 l+ h  E[trade-record-all] of customer) > 3 )

0 q! F5 y0 b1 |  V3 H0 m[
0 C$ q$ q1 s* a2 @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' |5 e5 q2 K! ?+ b+ L! l], Z( |6 {* L  T0 i# ~+ t  j- h
]7 _# E9 ?3 \; k0 z+ f  m; S
let j 0
' ], D$ M7 d5 l" }' z" ulet note 0
8 T9 g1 d) f/ K) y) cwhile[ j < people]# l! [: k4 ~$ j7 ~6 z6 S, \
[
, R/ n/ w' U5 x, v% @: kif( length (item i: n5 c) [# U1 v# w: L& ?
[trade-record-all] of customer) > 3 )

6 I3 n* ^! L0 v6 |* b3 `/ S5 ][
  u6 ]2 g" B- Yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)9 {% }; U" L8 U6 f  O" r# L
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( y* i1 w; J! Z; c[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 b) K1 K* d4 A. x; `4 Y0 K. I& `1 ~]+ K# t# d: X4 m
]- K  c- {* O" ~7 Y
set global-proportion note. v- {7 H# [) y! p* S
]
- ^2 V! A. O  fend( g+ z  {1 @- M! Q& H) [

4 I& }( B. I, s( X/ a3 Sto do-trade# \9 b. r6 L# H" ~4 p1 P4 Y, o
;;
这个过程实际上是给双方作出评价的过程/ L8 G& ?: j  c' q8 Y. G& S6 r0 c. k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 Q2 G8 k$ {6 E+ }9 N5 F! i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' A4 {7 [+ d* Q! J& N" d, Kset trade-record-current lput(timer) trade-record-current
* q( @; }" e8 U# g4 w: d% \7 T" N;;
评价时间
* E  K3 O& v/ `. `( eask myself [/ I. I) Z& u9 q) P0 \6 U4 Z  R8 i7 U
update-local-reputation
" \# {* i7 n( Z+ f8 hset trade-record-current lput([local-reputation] of myself) trade-record-current
5 P& S/ @. M. j- w( O]
3 b1 w" R* r4 L1 W- e7 n! @# ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: m% C/ H& k# u& `& U;;
将此次交易的记录加入到trade-record-one
' q8 _; Z2 G, W5 n/ ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- W4 m' l0 H% y  t+ p" g% E
let note (item 2 trade-record-current )2 S/ ^3 z/ `$ F
set trade-record-current
! Q: H7 {9 i: y5 \(replace-item 2 trade-record-current (item 3 trade-record-current))
) Y. O% q# \7 w! R* W
set trade-record-current
9 `  o$ j8 P3 U+ ~& S(replace-item 3 trade-record-current note)
# m1 ?2 Q. D. Y1 P
6 R. U6 z' R. K8 n$ [

0 [4 h/ e. o1 W2 Yask customer [
, R  I, ~1 L: E  F- ~update-local-reputation
1 C0 w* M4 H0 r; f4 aset trade-record-current/ c  y9 b. d4 F' [) j5 Z, ]
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 M) W8 g/ E, @]* q& g* W5 s$ v5 G' Q; w- _' b

- R3 H4 R0 E$ L) T/ c

+ j+ M: q* o" \+ V3 `0 p* B0 nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# z8 n1 ?, l7 F
3 J& c! k- c: S* _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* g. j$ L: w+ Y& z1 i7 I;;
将此次交易的记录加入到customertrade-record-all' F9 a. T* y7 Y" U
end6 z* z( S- \# N: J4 V9 q- r" s

0 S3 F0 C" a2 y- t1 ]4 I# O" }  U1 V7 ]to update-local-reputation% ~1 S) E6 U9 S. ?
set [trade-record-one-len] of myself length [trade-record-one] of myself! @% }2 q% |( ^3 A7 j% z

6 U: G# v) Z8 @5 O7 m# w" h- \' M! w
;;if [trade-record-one-len] of myself > 3

/ }. I0 _$ _7 b+ Y1 Rupdate-neighbor-total
. q3 W- b) v. A- R- g;;
更新邻居节点的数目,在此进行
8 v& S7 J2 j2 A  z% N+ Slet i 3
" y' l* U: N& _$ F1 P- Xlet sum-time 0
" w" O4 M1 S3 v: |% P+ K5 zwhile[i < [trade-record-one-len] of myself]: n3 I/ ^6 d: E
[! q, ^$ [! t" f, E3 I& Y8 w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ R) I- A3 R" g5 y
set i& K5 D+ Z+ p3 J6 O
( i + 1)
. X0 N4 `+ r- a% |: j7 B7 b
]% R$ W6 Y) O+ a9 @/ L, o# G5 X
let j 3/ `/ e! v7 F) z
let sum-money 05 r/ [1 K0 Y& Z$ E' o* O
while[j < [trade-record-one-len] of myself]
% T; h/ r  ?6 l6 r1 ^[
$ Q2 b" W# Y6 C: h0 [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)0 @9 u4 \& I# O0 h" R% L5 h
set j  B1 i5 e9 M6 h/ d1 G
( j + 1)
4 v/ U9 x+ b" D& h; }
]9 v0 F3 H3 B6 ?
let k 3
8 e. X. ]+ M8 E5 D9 ilet power 06 h8 Y7 t4 ?& o) F8 q. m
let local 0" z/ E9 ]1 S  M- Q9 @
while [k <[trade-record-one-len] of myself]
0 I9 ~, s9 F/ w1 k7 O[. o( G3 k+ c4 \7 ?
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)
  w4 A- x9 e& g- m" o1 G' Wset k (k + 1)9 v/ |, d- q% E1 X$ S( d
]
  O' v3 D+ H3 ^9 i0 Xset [local-reputation] of myself (local)
* c" B2 _) t% b/ N& Z9 mend
: ~6 ?3 E: g$ }" z" s+ }  A# ~  u: v4 y( G
to update-neighbor-total6 }4 c7 X1 W- X% K, c
- C! }, R5 \! X3 c9 `5 u1 @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 J3 ?! }1 J" G9 S+ c# {+ N$ S

6 ?) N* I$ F( F) q3 C5 o
" e, e0 ^7 i+ H0 M. x4 @
end
: P, W- O: h  Z+ [9 ~( ]3 P1 K2 E, q( Q- i) P
to update-credibility-ijl ( e1 w* q8 a( d. v
8 n& G' C! `* g: [: p' ]7 z0 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。7 Y$ U- J! J5 N0 n3 _
let l 07 b9 r- o! d6 z" w
while[ l < people ]
: T1 D0 F6 _- ^# F4 b# I1 {3 X;;
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
& n# l5 J7 U, E[
& v3 B- z/ p9 i+ Z  o1 G4 \* Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 n6 X7 D& H8 lif (trade-record-one-j-l-len > 3)
) K8 N7 ^8 n3 `! ^) 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
* n( v5 b' G4 Q0 S9 tlet i 3
) ~; e* c4 d3 @& t8 C& nlet sum-time 0
+ g0 Q* \  D2 f' i& _while[i < trade-record-one-len]7 S% a0 e" [5 q( @) q9 s- R
[; f2 m* L* {! n9 L4 B6 h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). ~  ^9 G$ |* X& p5 d: J
set i  `3 x2 A' u5 o# G5 @1 L
( i + 1)

$ |& v% r+ ?- x* `6 K% B) g]
: I& H; G; i( D! z- K9 Q" hlet credibility-i-j-l 0
  z  m/ K3 f7 `) H7 j$ `( _;;i
评价(jjl的评价)
. e2 e- a% R2 S! G5 e( tlet j 3
& x1 F- p8 Z" v9 Xlet k 4
5 R( }7 [3 n/ K$ c9 ~# x# E# I. Q7 bwhile[j < trade-record-one-len]4 _+ w2 s4 v4 M( _, l% e
[
0 L! S, s' ^1 t- I' I1 C1 o; Xwhile [((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
4 V& H  M% l6 ~: j. C9 H  |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)# e+ S/ y2 `! y3 T  e  _5 {
set j
9 Q$ @, A" N, Q1 [( j + 1)

+ b0 a& j6 d: m3 A' ~/ A' J0 r]+ e, }3 f+ ?2 Y& `
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 ))
( I- E" {2 D* e$ j! B9 n* K. T* {& n* r* z, C1 R8 v2 f
) b$ o, T6 ]7 j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 p9 t' d9 w1 W# [
;;
及时更新il的评价质量的评价
' a( l4 q! S0 v$ iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 S  }6 W9 }! C# N" m0 }* k$ _7 rset l (l + 1)
; s) n" Q5 P4 K/ ^- H]
, G/ t7 j# i( a6 W. D. xend# z% |) p5 L, _, l
) S1 u$ @  P' _: j
to update-credibility-list, k! b* z" v; H1 {
let i 07 e+ z) V" Q3 E" j0 n% a( @
while[i < people]8 H# n2 y/ t+ \! A4 O/ p
[$ {1 `' M6 ?0 i2 x( i
let j 0
  Q( w! m- k0 e/ ^* x! I: Blet note 0
! f0 D+ q+ q' P  t1 {2 H" \let k 0
- Z" D! ]3 e1 ~9 }4 j+ V, h- o;;
计作出过评价的邻居节点的数目
! k4 P' t5 @% H3 U) S+ pwhile[j < people]. W; ?# A+ l' g1 ]- N6 E' h
[: v& C/ h% r; ~: h+ j* \: N
if (item j( [credibility] of turtle (i + 1)) != -1)) Z6 I5 O7 t. ?9 r& A
;;
判断是否给本turtle的评价质量做出过评价的节点
! Z6 T8 Q, v, w& [( P[set note (note + item j ([credibility]of turtle (i + 1)))
( O0 m' m! E# d6 u  F;;*(exp (-(people - 2)))/(people - 2))]

- Z" {! Z( E) u( Qset k (k + 1)
1 T0 J, d5 P! a* B# l]
1 N! q$ _5 [: }' {2 \set j (j + 1)
- I4 x7 q, X) _5 t]/ J( v1 ~4 u! f* D; h
set note (note *(exp (- (1 / k)))/ k)4 L0 X2 O' m' s( H3 `6 [  W
set credibility-list (replace-item i credibility-list note)& m, |1 n$ _4 p" ~8 ~) g
set i (i + 1)
0 m, w* _& g& V6 U9 q1 N]. Z  w) W& r2 @
end
; }. n) [* A$ Q8 ]& G
) J7 U$ ?' m$ u) ito update-global-reputation-list7 x) f" e8 H: O: P: s: @1 C) M
let j 03 X3 a" ^) p6 |. b4 m
while[j < people]
4 A8 X4 K8 ?8 c) ~& b- L* S5 V[
7 w! N  [& u8 Klet new 03 P9 X0 Z4 h2 V# v) u8 B6 n4 ~, p
;;
暂存新的一个全局声誉
7 l6 i6 `5 N% S" c+ @/ `- S9 llet i 0& Q6 T7 C, m! O% X- r# |
let sum-money 0
6 k$ F4 s. M+ a: k8 R/ klet credibility-money 0$ R( y) V, S7 D1 Q! D8 \6 [0 i9 q8 U. t
while [i < people]
4 L7 W$ K6 d2 M! E8 M' H[* c9 q: p: c0 |
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 J8 P9 d- P- s3 f  p( S/ Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 I+ [$ m' b& j( `. X
set i (i + 1)
$ L3 B& y6 L4 M3 Z4 W]$ X2 |0 b$ L2 T; O0 ?" }' n
let k 06 S# V- y- o$ v  I
let new1 0
; m) m5 P! @( V5 x& g1 j6 Lwhile [k < people]  b# f# L8 M* U
[
: G$ i% J. d9 ?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)
. k, F1 w" L7 `- m- ^5 W7 d, _" hset k (k + 1)( t) R, `- k2 N+ g) ^( F
]% }: {7 j# e" y( Z( @9 K
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 ?) h7 B" X6 ~( P! B' [
set global-reputation-list (replace-item j global-reputation-list new)
9 S4 d% E, M8 D4 Q! Eset j (j + 1)( d' ]- m# \% M, ~
]
/ I7 C: g' j  @end2 v3 O9 o% T- ]

0 {+ |" a3 }5 _, y1 s) i2 T) U) j$ D7 C9 T! K

' ]; _& b$ o) P) ~; E* O+ J5 Wto get-color/ e  a. I# p: o& o2 V
5 R: s, t# h, w5 i% O
set color blue
, z' b& r4 x$ B( Y* @# F2 H( i* u9 o
end
. P$ c4 B' G2 j' R/ a+ b. X. b2 p
3 a, V' [3 c: K7 ]0 |1 Y& b& yto poll-class
9 v# o) r! U' O* {7 Yend) F) U. d0 Z: i! j- C8 f

0 B* P% i% I4 wto setup-plot1" t& d& J0 Z$ \( b
- J  K* M5 o8 u3 @5 J3 c4 h8 T
set-current-plot "Trends-of-Local-reputation"
6 J# o4 i* X7 h# v5 o" p
$ W/ m1 q7 i* k% T5 J" ~; M: W
set-plot-x-range 0 xmax
1 G+ \; S6 y& [4 ~/ x2 F
' S0 U/ F4 J' [' C( C8 B2 o  y
set-plot-y-range 0.0 ymax
, Q3 c" f- z- y
end
3 B- C: M/ L& O2 o+ j" |9 D* a- Z! [) t+ R8 B5 Y1 [, p+ C
to setup-plot2) Y7 T6 D( S  L% t

1 G2 K3 `9 A* x$ ]4 R+ yset-current-plot "Trends-of-global-reputation"
2 v1 i  E  n; p( h8 A$ M5 n

' C& P8 y- h" h- I5 yset-plot-x-range 0 xmax
, m3 v. c% W+ J! ]
6 t& G; q2 Y; N9 S" o) _8 {
set-plot-y-range 0.0 ymax

  d8 M/ R4 Y2 c/ Cend/ T& t0 H; @/ e3 R9 a, A

4 r. C& c1 w" i7 c1 I( b3 H& dto setup-plot3- R6 o6 i# c- E) x- @# a

0 u+ n+ T$ Z% Y0 w9 j8 gset-current-plot "Trends-of-credibility"

9 g. _/ i+ I) Z. e% G) M) y( Z" `; |7 C, k# ?. a
set-plot-x-range 0 xmax
# R. I0 \2 n+ _8 B. x* E$ L- k$ Q
$ g! ~, |% x( }1 u
set-plot-y-range 0.0 ymax

+ x) G' W  ]7 [- [8 C  Send
: t9 n8 z$ t- X% n' D) h2 W. x. S$ W. j" W+ Q; N: \0 `
to do-plots
) F, X* w% O+ l4 k5 a3 i2 Dset-current-plot "Trends-of-Local-reputation"/ h0 O: J  d$ J+ [/ W' d2 d
set-current-plot-pen "Honest service"& K+ h8 |) ^. x5 `( Y
end5 v. b* T6 q1 L- J! L8 W2 L

+ B2 X# b; ~! _3 _/ E[ 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./ P. i3 c8 w  v$ J

" h; \) h2 n( {( p. q% X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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