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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" F$ T4 r' _: `( E" g- Q2 Ato do-business
+ z. L, C) [1 z; k* ~# r! Q# N' m7 a rt random 3608 x: g. A- O! R. i
fd 14 }: @. R, n& H# _8 T
ifelse(other turtles-here != nobody)[
3 |! r' N% H2 W$ @* k% a  u   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.
, ~, m$ m+ z% g. b& F) p   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 @2 C3 ~. k0 ]8 F; Y: I; G" ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 H2 E, F6 ?: {& f8 v
   set [trade-record-one-len] of self length [trade-record-one] of self3 @/ [( R& L* G& z. c4 b* A
   set trade-record-current( list (timer) (random money-upper-limit))
$ @0 V6 B. Q5 g" H4 x+ W9 X9 n$ L0 J* s3 ~2 `; N- n- R
问题的提示如下:
: w+ U5 p3 E5 m7 |
2 r) U$ G( i8 ?3 ~4 S! \9 Nerror while turtle 50 running OF in procedure DO-BUSINESS. |: D5 z% c) h8 {! Y
  called by procedure GO
' n& j+ O! T4 m/ q5 K( w  g% [) IOF expected input to be a turtle agentset or turtle but got NOBODY instead.. h  u1 P8 n6 p% A0 y8 B0 S1 O% G
(halted running of go)
3 k' f# G( ?; z" b5 {; M) S; z+ E& a2 V. R! 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~~1 A. o" c$ ]+ w8 @- ~/ g+ d  ?
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9 |7 x5 y4 x. a3 J9 ~
globals[1 ]* F' g2 p: x1 q  M( U; w" U+ ^
xmax
- g, L0 o% R" B) }/ i2 `& F) m9 Uymax
1 f1 Z2 |8 D. r0 P6 A  mglobal-reputation-list: x" a" L/ D0 g+ m# g7 K. m

$ D* G" V! r' v4 l! R;;
每一个turtle的全局声誉都存在此LIST2 j% s1 w3 [( G$ p- E1 W
credibility-list
. y; k( v" o. m5 H8 Y3 ~;;
每一个turtle的评价可信度
( w! n* d1 t4 k% [' }$ S4 B- I7 ihonest-service
/ m% c% J) n2 B4 d% v8 gunhonest-service
! q8 Z5 b# ?- ~7 s4 A# M! Boscillation5 v0 u, M0 ]# A
rand-dynamic' ?, A: h- J- V& ?8 H, [
]& [! G. r7 L1 m* a  c+ I
5 w6 C/ m  Q" Q* O, p, O
turtles-own[# P# _2 o, t! W: B
trade-record-all
* U4 Z# Y$ L  X4 Z2 M5 r( _;;a list of lists,
trade-record-one组成7 C" [/ A1 Y) Q8 X# M
trade-record-one
' E6 w5 I. x# K' S3 |;;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 b, U# T: V. {$ k

/ j0 Q# b4 ~( P8 u;;[
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]]
8 k+ u, N. Y+ j) j4 R, v3 Otrade-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]; r: g! K% X; F6 _  R8 ]  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list5 @# o0 B" l% y9 K' k
neighbor-total8 h; x, I3 D" p
;;
记录该turtle的邻居节点的数目
, I  f0 k# j; G6 rtrade-time# t. }( V0 V) _* E' N
;;
当前发生交易的turtle的交易时间+ h- e$ i! W$ K; d7 X2 K
appraise-give
0 Q# {2 V5 o% R3 C" L# a;;
当前发生交易时给出的评价# N! {# m" w* T
appraise-receive. D, H& G( E" ^. U5 }
;;
当前发生交易时收到的评价
2 Z" O3 ]- K! |) B7 Z. Lappraise-time) p9 a, U9 P2 l' s0 A# N8 _
;;
当前发生交易时的评价时间
' }" w) z+ R/ N; qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 t+ G. n' i7 ^+ |8 V9 G7 mtrade-times-total- Z* e# j/ z& n
;;
与当前turtle的交易总次数
" @* n' L' r9 t2 ~& m2 A% Ptrade-money-total
8 }4 H1 F7 c* X' K;;
与当前turtle的交易总金额$ Z: a  l& M. V0 s7 i. S
local-reputation
4 {& B3 I# E" Vglobal-reputation
) |  P: O% s% Y2 C1 ycredibility8 F% |7 o; k% U. W
;;
评价可信度,每次交易后都需要更新
# J! j# k' Z% t0 K( ccredibility-all0 D! W* S# K, @. T7 _
;;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7 Q- @' |5 K8 X2 A

/ \& c& c' D! q;;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( z4 S6 S. a6 z; W
credibility-one" }# c/ u+ E- P( |5 W  v2 K
;;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: X! I  J* ?7 O/ I% B
global-proportion# ?. ]8 h; J- s5 E4 c
customer
% \7 }" M7 `8 D" z/ B+ Scustomer-no
5 n# \' f% N% K! h5 @; [) Z$ m" J' Ztrust-ok
" ^: W4 r2 F; d/ R) atrade-record-one-len;;trade-record-one的长度
6 u+ _, d7 I* A/ |+ ]% q]! x; ?% Y- _7 S' C3 U7 {( ^2 ^

' s3 Z0 W" C* O5 G;;setup procedure: K8 a9 k; m" T8 ~- g

9 a* D* Q; J( d! S9 R& I( f2 Gto setup
4 O* V0 |9 @1 C% a$ Q+ w# `* q
2 P! O' X, B2 \6 C' Y3 ?% s& g0 I/ @ca

- e* m: ~' ]% u/ P
0 `5 g5 ^" t8 W1 W/ Linitialize-settings
4 A& o6 ?4 d, P. e, e
% \6 \9 P' i7 p$ I- F/ v" v, B& U% r
crt people [setup-turtles]

% ?5 ~: L& @+ D6 l5 H1 E
  u& Y3 d3 u# M% c4 yreset-timer
3 I  C& G3 U0 K+ i  ~  {
- x% y) E- y' I2 R( k
poll-class
% r5 @6 H; o  G8 |& H
, S5 z2 o& u$ K1 c: T5 C; _3 Q
setup-plots
) K1 x% M/ m9 [( s$ h
# D' V% F" @. ^; s1 y
do-plots

6 Z( O5 S6 f7 X, Jend
$ @# h/ t7 O, P- s" d* `3 b
/ M0 p! i' R' W, s) O7 t- c  F# Pto initialize-settings* R( @& @% Z: x1 B) X4 M$ @6 z/ n
9 |5 J( H3 T5 k* p
set global-reputation-list []

) r% c+ D5 W- F6 ]
) V5 H2 D+ e* I+ h) p/ W9 }, v2 Lset credibility-list n-values people [0.5]

1 ?" S/ W8 R9 \3 I7 W* F/ @1 ~! |
( {9 n0 z: j0 S: {) kset honest-service 0

$ y0 h% |5 ?: o  S
0 k7 O8 A2 x$ i4 P+ zset unhonest-service 0

, t. b+ X; `: o* i
7 N; G; |9 t, I- x) i0 ]0 gset oscillation 0
2 B0 ?6 T+ M% j

9 M0 f5 K8 t0 Mset rand-dynamic 0

3 S& o, _2 X+ V" s6 J: Jend
# c: A) I' h1 C2 Q" Y
6 j0 P! J- [2 bto setup-turtles
; D, y1 q( W; iset shape "person"% m9 C5 h. u( J# f" R( o: q8 b6 x4 I
setxy random-xcor random-ycor& L% a5 `* O9 e8 H
set trade-record-one []; E: K2 [7 T4 f2 D

7 V  W" G4 c9 j+ ?1 lset trade-record-all n-values people [(list (? + 1) 0 0)]
8 N# A. N/ X! C# q8 n& @% e
! P& ]  p  F/ B; [' l6 E0 Y0 J, y
set trade-record-current [], Z$ ^: b% k. {" t2 \, P
set credibility-receive []: d$ |% u; M, B( B( C- Y5 I
set local-reputation 0.56 x, ?# O7 S0 Z8 Z# g" Y) M9 z& j
set neighbor-total 0" t. K# F) e! @
set trade-times-total 0$ z: [: @6 Q  A3 Q3 l% t. X" l
set trade-money-total 0
  n6 z- y- H# Q" g! fset customer nobody- K- W) Z3 W  f/ ^1 `1 k5 k/ }
set credibility-all n-values people [creat-credibility]
6 f  j6 `6 }0 [8 Fset credibility n-values people [-1]' y+ K9 _! g: R5 s
get-color5 g9 I2 ^2 g3 I9 l6 c& G6 x/ S
& o3 X3 ~4 G$ F2 k+ s' A7 j" P7 _6 v
end  y( N3 g0 P! D6 O
4 l( g# D) U' k  e
to-report creat-credibility
* ~" u, j: E0 Q5 E) }report n-values people [0.5]
, O  y1 T0 c8 q6 g0 l7 r: X  Fend
) u+ k; x! b% P# i* \0 M6 Q1 L. A/ i3 R$ B/ e- e" E' O, y$ l
to setup-plots
, d* b1 V$ F! }# _
9 @9 u4 u1 m4 ~, xset xmax 30
) y! T* S8 ?1 T1 j; s

/ j0 u: ~+ K5 c1 w- lset ymax 1.0

' j/ [! J" c( N
% W  E  k" m* ~; G2 Uclear-all-plots

  F7 y! U- F2 ]
! u8 U6 P) t1 ~$ J7 psetup-plot1
9 ?8 R- {+ T! ?. N

/ }) t7 r7 r/ B7 _% l8 |setup-plot2

5 s$ p) m$ r' u  K' x/ c3 P9 R: ^' u, }5 ]0 |
setup-plot3
- Q2 L0 T9 j& N& Z. L5 {3 ]
end
6 [' z, g3 x+ z; Z0 a& p& p0 a% P4 y1 `! y6 y, O" A
;;run time procedures
' L4 h( H3 i  g' ^/ Y  @5 S9 ~$ Q  K- W# Q& h" e, K- \! ]
to go1 O  z2 [! G9 O1 D# A

& L# @' x/ H' O$ m$ ]# W! A% Vask turtles [do-business]

. S$ T. x/ K2 [) q4 gend
+ S* @( n) M! b9 e
7 b# G- X) d1 [to do-business
( c  A/ S$ s% j
" P. p* D. |: Y/ j+ P& N7 x  R3 j

# ]1 u/ T, u# B7 @  p+ vrt random 360
  \# \8 m, F3 R9 Z# k9 m" C
( \1 k# {1 c' e  {6 z# [0 N
fd 1
  ^% R; D, `/ w4 G8 @
0 `" s8 Z0 P7 ^- b  I& X
ifelse(other turtles-here != nobody)[
: e! [# L. }0 J9 E

' |0 f. M9 e  D8 j$ |set customer one-of other turtles-here
: ~: u) Y# d, `
% t: ~$ @( z9 a) T. m
;; set [customer] of customer myself
1 W3 e0 h6 E) X6 H. [/ L+ S
1 p( h- Q, Z- `8 R6 j  g; o
set [trade-record-one] of self item (([who] of customer) - 1)% y' I: o# @, O2 K, W* s
[trade-record-all]of self
  N3 P+ ~! ?: T3 q$ S+ @- O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 z$ i! x3 R  r( [" @! V* E

6 h8 a* s- P3 ?; M/ jset [trade-record-one] of customer item (([who] of self) - 1)1 _) L" h& O9 [8 N' @* H! E
[trade-record-all]of customer
0 c$ K# k& o8 `
9 e0 b5 }! w. J; b- D9 J* t# X$ V4 `
set [trade-record-one-len] of self length [trade-record-one] of self

. r3 Y3 p. \7 y. p# l
  F* ?  b' J: x. w7 ~set trade-record-current( list (timer) (random money-upper-limit))
% f& @4 \8 x7 K6 v) u

  D1 J9 d% r# N3 _/ X0 o9 eask self [do-trust]
; K: _: i* P$ n1 l+ [+ d0 w;;
先求ij的信任度
3 U6 E- U: S! f* Z
  m  S! `" s: z  u1 t0 I) ~3 ?if ([trust-ok] of self): M3 w5 K: E9 m) L' a: A
;;
根据ij的信任度来决定是否与j进行交易[
" _" _7 \6 G* v, ~$ kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 u% `/ S5 R7 d/ c- B( J+ U8 Y" l
6 g1 m$ `# t. j, E" E, l
[

  m6 H9 ?" D9 E+ F
& t3 s' y2 [6 S2 {3 Qdo-trade

2 |8 ^* z$ j; V& S7 f4 D* d' b
update-credibility-ijl
1 d# `6 N& K6 o* L# K2 |- Q- |# L

; `! v$ e; I. j( C! a* ?update-credibility-list
* U3 y; \' k7 ]1 _# U3 f' S

# m. N5 V; t7 m/ j+ S- ?
- \  o( H9 q/ [1 r/ {$ ~update-global-reputation-list

: o( J4 e# f" Z- @2 H& t5 ^+ z! V. z! w2 U8 l( A. V
poll-class
9 ~0 ]0 m) d5 b/ J  v, _

# P3 X1 F3 [% ]- Dget-color

+ G& k# Z3 N+ W3 Q
% l% }9 g3 K  K+ \1 x: }% F]]7 c' x3 H9 k8 n+ g7 R  g$ w4 ?# A

$ G) T" j% g1 _9 B9 V: Y& {2 a  s;;
如果所得的信任度满足条件,则进行交易7 A% E0 a5 r3 n
$ P+ f& T2 {8 o% s# g% h8 W
[

  g3 v" X% w" W. E8 D' N; S0 L. [/ N# Z" i$ Q* j2 a# w/ f' x6 m
rt random 360

# `& x: @* j/ q4 J, r5 {6 D/ b. ^) K4 O  I8 c: @( d
fd 1
% a4 x/ H$ \+ P3 U
. ?$ y5 l& C- y  X* j( ^% P
]

9 @6 L+ L/ ~/ }/ _7 Q
' I' r& s+ a: J: P& E; F/ [+ fend
$ ^* N/ I# h; s

7 Z7 C5 E, R8 u% @to do-trust
4 [, T( |1 S- Oset trust-ok False6 Q1 ~7 @/ n$ F7 ~/ T
2 a+ Z% G  x* A, @2 n: Z/ {( l. a3 w

9 S) u" ^% O* b  Rlet max-trade-times 0: v5 A# ?+ D4 A' U3 s0 w
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 |+ @' u9 P" `8 X' B% vlet max-trade-money 0
0 ]- v( d4 o2 b; R' i2 mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 \# _0 L9 q$ h8 e% U; }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 X, e. ]) }& M+ f) M
/ Y7 ^0 _* d' J3 w

; X0 z# m0 k7 E& g7 jget-global-proportion
* H7 Q5 h( W# t& \( O. R" wlet trust-value
/ R1 N! P7 U2 Q2 ^# m; glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! c, @( N' |8 [' A. u, i$ q
if(trust-value > trade-trust-value); d. O- w0 B0 _. ^" l
[set trust-ok true]2 G  K) r: x" y  U) J/ m0 p0 w& g; y
end( j( L5 W2 h& x( M

" y2 l7 K3 v2 U2 n6 c, xto get-global-proportion
' M' m8 I& g' b6 ~8 n/ Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% c# O* u7 ~, s1 }* S2 e4 b[set global-proportion 0]
3 v* ~$ \- b( l( s[let i 0
  b( w! d2 K( P$ c5 hlet sum-money 0. _1 I0 B1 B7 k. o; Y6 c
while[ i < people]
% E/ Z9 x3 ^7 B1 m5 s. C1 ][# ^- C# v+ N2 b$ u2 A
if( length (item i- z$ ]+ }- h  H
[trade-record-all] of customer) > 3 )
" P" h* E& M) n0 c) I5 I1 G
[( ^% j/ B$ X, `4 u1 n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& e3 q& w6 Q- x9 W1 w  d2 V9 y8 f- c
]
  m2 ]" W  ]  Q, {& u! K& D]
  |8 Y; f! {$ h2 }2 glet j 07 ~' ~) x; H8 c* ?8 ~. ~
let note 0& z3 B9 ^* j2 o0 E* A- I; J
while[ j < people]$ P7 c7 V6 t$ c/ s5 Z, s& Q- J
[
" i! t. R1 s/ }if( length (item i: t  K9 Q7 ^5 k* L8 _4 x/ u
[trade-record-all] of customer) > 3 )

3 @5 y0 l$ M9 T4 h" M4 I' P  N: B[5 N4 l1 N! f# [# {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 J8 m! N& D0 m' E  J
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' `7 a+ U$ T2 G- L* E' Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  n" R/ u+ f, f$ q" {]5 V* U  u# u! ~- T  z9 D. ?
]  C3 ~% F, J" c  m$ y) ]. X/ e; K
set global-proportion note! r; ^- i2 y/ p4 D( u) d
]
  X! v% o! |5 }% f2 k; vend
9 G* `5 w; L2 o; c$ W+ B. t  r+ ~6 @+ o1 P& \! f" Q
to do-trade
. a; M4 w0 n+ q4 K, M;;
这个过程实际上是给双方作出评价的过程
' [# S& E" O; W0 o+ S# ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- c) s$ l! z6 r( M) l  ]( J' |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 y6 m9 N1 }3 W( g
set trade-record-current lput(timer) trade-record-current
5 r4 J1 q2 e9 Z;;
评价时间
; {! o# y5 k1 A8 C) m  p- rask myself [$ |2 l: N5 V; K% g- C
update-local-reputation
  ]2 f8 n* F" B  ]! n8 Mset trade-record-current lput([local-reputation] of myself) trade-record-current9 K7 E; J# r1 i- B# s1 R3 A
]
$ _6 Y2 U) U& Q/ I0 N0 lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. S' R: M2 `! F  V  D
;;
将此次交易的记录加入到trade-record-one
5 Z4 w4 _0 x8 @- \! O% A, C* rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' L; L, P- v- R, ]- [  N2 C
let note (item 2 trade-record-current )6 r2 M& H; q" G6 o9 T  F
set trade-record-current
9 Y7 S2 f  l0 @' W8 D(replace-item 2 trade-record-current (item 3 trade-record-current))

5 S* d" P1 ?8 [' h: ~" v- S0 x. `set trade-record-current
2 h! \4 B; X- |: |9 M9 S, j3 f(replace-item 3 trade-record-current note)' ^7 Y* ?) R/ F" h7 l$ H/ [

  O1 Y; x! l' O5 ]/ J

, W7 G( m, B0 x- ~$ n6 K$ \ask customer [
, U( G" [' ~" v& J% |- ]: hupdate-local-reputation
) V% q% ^5 K2 E/ d( aset trade-record-current" `1 V$ Z- {5 ]6 Q8 A
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* }1 u+ u: P1 `4 K# g  g0 Y5 D/ _
]4 b0 @) E/ o, A  }
( ~& a( j# @2 l% y0 g# K

( K6 B- E. Z- E4 ]# N4 Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) {$ m( a$ B' E4 D0 A8 D3 b

! \+ \* E3 @: f! fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  v$ _/ \3 p% w* x! k3 e;;
将此次交易的记录加入到customertrade-record-all) A+ c6 I' d! A7 n8 D
end
4 j- V3 n0 W: P/ F: v( N, K1 v: v% g5 g! K' U& t
to update-local-reputation
3 n+ f5 i7 A9 Aset [trade-record-one-len] of myself length [trade-record-one] of myself
  P0 W0 Z5 D) w/ X1 e, I
" V% Y# r  b7 k/ ], a$ t7 C) K5 p" Y
;;if [trade-record-one-len] of myself > 3

2 F6 z0 u9 J: I" f# Uupdate-neighbor-total7 t: [- r7 Z/ l/ G2 N, X, X4 d% P
;;
更新邻居节点的数目,在此进行+ |. L4 _, Y, a* y% C! Z
let i 3
& S$ d) C) |; h' Clet sum-time 0
( ~/ A1 x9 c# J/ N9 twhile[i < [trade-record-one-len] of myself]0 {. s' A0 j* n. Y+ p1 M8 {3 Y
[: b% [8 l0 @' F  g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& k: o" A' `! ?$ e7 ?7 l
set i8 k4 B2 @1 l7 H( ?& A
( i + 1)

' W! k" u# e$ H. ~! c5 X- f]" u+ g& g  g9 m8 I1 B& R. t, Z
let j 3
' C8 w0 H0 k: l% m$ Dlet sum-money 0% g. ^3 z. o4 n5 T( n
while[j < [trade-record-one-len] of myself]3 M  E4 {% A/ J% ^( C8 [
[
* N6 ~. g  h8 x% ~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)
: s3 _9 P' n& Cset j
6 D( e3 E5 c5 u. k; v( j + 1)
1 ?$ x! ^$ F0 @5 }" `6 I9 }0 g
]
# f0 e) y" u0 I) glet k 3
; P( t# f) j; ?" D9 Hlet power 0
) E: N$ W, U2 |( t' Llet local 0
* F- K7 D2 m. S4 r/ T; P  J! Jwhile [k <[trade-record-one-len] of myself]0 {  J& H' Q( l8 D1 ~0 q  o* ]1 l
[
7 L8 W/ R. u1 O0 A1 ]+ mset 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)
5 V" r9 C7 y) w" e" Pset k (k + 1)
" M" Z8 T9 d# T  b6 t' l; n" J]
0 v$ T+ Z' W- n4 S; F  @set [local-reputation] of myself (local)5 L$ P" K. `7 V# b3 U
end
. h6 p* l$ }8 i* N! ?: a9 x) P1 I  w7 Q2 O8 K
to update-neighbor-total; f0 }( ^7 e1 Q9 R! c; n
9 H" G6 \$ y/ S4 D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 t8 T9 A% ^  w5 [
% X& I0 p3 |  h( A4 U: Z! E
6 S) y$ C0 _' l: [8 b' ]& m
end
( `* p$ G4 u, i5 n# m$ t
2 [$ S, Y# G4 _( B: v. Z) x; Yto update-credibility-ijl 8 M; ?9 I$ E$ `  M. w$ R) l/ v+ z
' X/ [8 K8 K) }' Y- C
;;
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。
. g) A0 c% z' u6 N+ y& e5 t6 ~; olet l 0
# g: {! e1 w0 D* h6 d( bwhile[ l < people ], E* M" Z2 X8 Z/ d' c( p# y
;;
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& H. O( [. q, h3 h7 s. x
[
  ?0 G% N2 j) z1 P4 F$ elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 L, {" H. c2 q( x! Hif (trade-record-one-j-l-len > 3)) j# W8 O, F: r
[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
4 ~" c  G7 g1 w0 t; D, x# M+ s6 hlet i 33 U$ d- t4 u; I2 l3 Q% ]" C/ p
let sum-time 0
( r* D3 }; [2 y! owhile[i < trade-record-one-len]9 }% U& K" V! Z4 H
[. i# k. Q3 M' e7 \% g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% Y$ d/ o( ]) m( Y
set i) ~6 N* y& B, M5 B( T' i& {. l
( i + 1)

; u' {- R7 T8 M]
2 }  Q( u& ^8 B/ k8 Tlet credibility-i-j-l 0
5 o4 m1 H2 w9 a+ |  e9 h2 B;;i
评价(jjl的评价)4 i% S, T+ D- U+ ^- Y, P; ^
let j 3
  A; V) F* ^! v+ K2 P/ M% I6 q1 flet k 42 g! _+ t1 [  A' J* A
while[j < trade-record-one-len]( y8 p1 A' A4 j5 B6 G) g: a
[
( `+ g+ u; t1 r& P! cwhile [((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
5 W% }# O5 F: w6 c) Sset 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)1 v$ ~/ ~- k$ U0 }1 k
set j
7 U* G: M% c% M; p( j + 1)
( e& B- B. x! y9 s8 p) X
]5 B0 [5 U6 k8 `- T
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 ))6 p7 D+ ?* o# H

# N% G3 H) r7 K9 G
- Y+ o2 L9 o4 x0 a& _' J3 P- K4 k
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 I" c3 H) a8 \# A+ X;;
及时更新il的评价质量的评价5 u6 x4 q4 p; @8 B1 y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  k1 @. i3 [( L4 B  pset l (l + 1)
6 F( d6 `2 T- o; \3 _( z  [7 {]
0 `2 z0 P. }' R% h& f: k1 n5 C- _end) O% _: `7 g1 P: u
- A( Y0 ^) ^2 S0 q$ y. x  Y
to update-credibility-list" }6 d3 O4 n: c7 x. _' G
let i 0. _8 v7 w% i% D, e: `6 i; @
while[i < people]3 k% h9 `; V' l) I* H
[
- }: a1 T( N8 Dlet j 0* _3 p# w& K$ W1 ]3 C' O7 G9 J
let note 0
. c" Z, W. B0 h. H" k; Ylet k 0
8 I0 D* ~" [/ l$ \( Q;;
计作出过评价的邻居节点的数目
1 s8 B% _  ?! T8 p$ Gwhile[j < people]
( t/ l4 t5 V2 F5 J& p[  M2 A  E" B: E! `3 M
if (item j( [credibility] of turtle (i + 1)) != -1)
9 k1 W0 c$ G3 Y;;
判断是否给本turtle的评价质量做出过评价的节点4 Q* ^" u! T- R
[set note (note + item j ([credibility]of turtle (i + 1)))
6 S) i( |& ]& q4 U;;*(exp (-(people - 2)))/(people - 2))]
& @' S+ \0 C2 j9 P0 ]# ]& p
set k (k + 1)5 N; R8 b; c. L) R5 v
]$ i* V/ \/ e" k1 l
set j (j + 1)
3 _( K" m: V( {& V! @]; H$ \$ x$ j$ n
set note (note *(exp (- (1 / k)))/ k)
. a$ H9 i$ v% G- Q% }set credibility-list (replace-item i credibility-list note)
5 N6 Y8 p: l' ^& b% `set i (i + 1)) |3 d& F* r7 G* G6 ~0 ^% i
]8 o7 B. G9 Z- M0 H0 E3 B* L" ]8 N
end
9 `/ A3 f1 }6 p/ A4 |  g! E( h9 h  s& m( t3 M
to update-global-reputation-list$ |; e; L2 s7 t$ O
let j 07 d. e8 U. f) r+ B% h* y
while[j < people]
" b5 j* {2 s, g$ E[& n: p" J4 `* k, \
let new 0
* C/ R- I' t' v. j6 {;;
暂存新的一个全局声誉
1 c: E( R9 B) X) qlet i 0
( [- j2 u* \3 B! E0 M, }4 l. Hlet sum-money 0
7 S8 `5 {8 }9 @# a4 |let credibility-money 06 @  v7 a0 J1 A3 g+ j( c
while [i < people]
6 w5 n9 k( I& s: |4 c, t[& F: z1 Y1 u& \4 n# T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 G0 `, U: b" B$ C, L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  f) P' t2 `2 I0 k4 P3 j' B
set i (i + 1)/ [& f6 L3 s/ v
]
8 S- ?) w0 m1 b2 [% q* H4 Glet k 0! ~7 p4 i: q3 A/ O( d
let new1 0( J% S4 @# ^# G- V6 ?2 T& K9 o
while [k < people]* k' c( Y- b# P# J; o7 ^) c# ?
[
+ d* i9 v3 ~6 `9 {7 }6 `4 r5 T5 nset 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)
4 B8 S( \9 X& B2 a. M' o; @set k (k + 1)
# m  c% N6 H6 r: w! a], c2 `; J8 r* N: C5 s1 ~, u3 _
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ J4 u. |4 ^. G
set global-reputation-list (replace-item j global-reputation-list new)- H4 Y& P; ]; t4 h' `+ D( W3 J" {
set j (j + 1), u% B) w% J, W# j! v
]
- C8 v, S# V+ J2 ]& j9 f, A8 Pend& h" \# d# r7 `- I3 R; y

' u' F" f! W, H& P* J0 @1 x3 ~, [( `" A$ b+ C! p
: k# \# h0 Q) m7 C0 K+ L
to get-color
8 Q- |- c+ f" P2 ?' s6 ~6 I0 z6 ]
set color blue

# m6 X' b: ^7 ?& K' eend
2 x& _  q6 J- k: J& g, I- r1 d) x3 T0 N" H( k9 w. z, U
to poll-class
) @& J* Y/ i. k! T+ Vend
7 _% Y( x4 ?: r% n0 h# z5 h7 _7 V) ]3 l9 H1 O( b7 [
to setup-plot18 `& p" ?; d  ]( q8 d

3 C4 c" O; A/ k/ v" a, W9 R8 V, C% |7 wset-current-plot "Trends-of-Local-reputation"
  X0 i! d- I" X6 H- l
$ E5 r+ Y* k( E# G( B! p
set-plot-x-range 0 xmax
7 F9 Y! O' m6 M$ @( N) C
9 a8 t6 a. A( e2 m8 H
set-plot-y-range 0.0 ymax

3 z. E8 o! m2 H% s* Gend
& I& I  t$ j5 u$ ^& g" I/ _+ t0 k8 Z! r) d' L2 l  {
to setup-plot2
& o! T0 _7 M/ |0 d4 B: Q) U
; D- y* u! S2 r$ g. D: u& Vset-current-plot "Trends-of-global-reputation"

4 C  ~4 S& L* z) @9 m" n* Q6 \- d
# _/ ^. m3 r" g. B# Yset-plot-x-range 0 xmax
7 T& l4 w  @) Z, W. B( [/ O* r

: G. W  F7 ?$ m( J- A' l8 Dset-plot-y-range 0.0 ymax
3 I3 X( g5 X) ^/ X+ i
end. [7 o  e5 P8 w& v4 Z% e

; p' G2 u7 F  d1 ]9 U6 qto setup-plot3
1 |6 y0 }/ h/ ~& z  R
  T: H0 q2 s: W: A7 ?8 D: Z9 tset-current-plot "Trends-of-credibility"
5 s& C' _, K8 G, @4 E+ \, Y# D
, p' m" ]* r' @) t2 c, {
set-plot-x-range 0 xmax
. Q9 _' X3 x- Z; p/ o1 l) q
; d$ @+ w0 C' \: M0 `
set-plot-y-range 0.0 ymax
1 A' B1 [8 b+ d& S/ f& d
end3 S* n  c& F5 @: r6 H9 r

4 y0 z7 b' R6 s9 q, xto do-plots
/ ~; v3 P' B% Q& W- l. V" p9 @set-current-plot "Trends-of-Local-reputation"- u8 s9 s  h7 H; c4 a! p& W
set-current-plot-pen "Honest service"" Y& U( C; s# N( o2 s, X
end
& N" {% b4 ~9 y/ @1 @0 }' j5 b& G% c1 y2 V0 N; i1 R1 q
[ 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* V% C. c
  n, ]) e3 H, u; U7 D3 @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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