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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:" h; V0 h1 K- o& |! P' i7 E8 u
to do-business $ |+ a4 M% O6 _2 [
rt random 360
* Q5 D; X* V9 r3 j: G/ j! W8 ^% F* B fd 1" f. C0 M0 y$ i( o1 K& e
ifelse(other turtles-here != nobody)[
! n: U. m' F. A8 u' O1 T4 L6 X! n   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.
# C0 A4 f: |1 n4 m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " k9 f; N1 S; P
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, ^6 R- I; |6 W5 w9 J) P6 S
   set [trade-record-one-len] of self length [trade-record-one] of self
1 i$ `* C1 o2 h! S   set trade-record-current( list (timer) (random money-upper-limit))
0 f9 ~9 {3 L1 N
; Z9 P9 C$ J4 Z  E6 c问题的提示如下:
# Y! f- M! U2 [1 p* u9 \
7 _/ [# K% L5 b* v% x! M& K9 C2 F. rerror while turtle 50 running OF in procedure DO-BUSINESS9 f% A; C$ X3 N$ ~" S
  called by procedure GO8 k9 T# D" C& z' l( n1 X( C) s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
# z! w" y5 l! y- l5 ~; v9 M
(halted running of go)& O$ V$ ?; `/ i3 {' a& A: p8 y% d

. c0 `/ A5 ~+ K5 L; {" L' r1 O这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
4 r* N8 M& [  n# B% I; ?( A1 T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' i5 h" C) m& l( w4 ~8 V/ Q5 v
globals[: p3 g( _: D8 O
xmax
$ h* ?1 [6 V" ^1 ^% [9 d3 G9 \ymax
) f4 \, O2 T0 Fglobal-reputation-list' i# z& B# m4 b2 M% q8 s# M
8 M8 K& l) ?! }( Z1 J
;;
每一个turtle的全局声誉都存在此LIST% j5 ^2 [: S! I$ P5 l
credibility-list
0 L+ [2 F) w$ z6 H: h;;
每一个turtle的评价可信度
* i$ _/ E4 U1 m, i1 \. \honest-service
$ U' b9 F5 U. ]: ^. p5 Runhonest-service
2 y  M1 I# Y9 k; hoscillation
( k$ p! ^! z! t, i) Srand-dynamic
4 K! r& P- O( ^# F+ \; D]7 m( T) m. j2 x% i1 p

. t" L' ?; D% F" h: Vturtles-own[" `* [* [; d! m# [
trade-record-all
' X; Y% |! c& n;;a list of lists,
trade-record-one组成3 z' S/ g# m8 w. l
trade-record-one: }9 |, Y/ j. B1 R" A- L& f# 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$ M; T9 W4 O0 T

  ^1 ]0 ~" ^" z  F) X;;[
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]]
" D0 ~; z1 V8 y: |$ Ftrade-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]
% Z6 q" R. M4 Z/ [# Y' Q. Acredibility-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
1 k3 {) Q0 V+ e5 ?" x" t  hneighbor-total2 b7 O- O2 |% E" n8 D2 }0 T% a
;;
记录该turtle的邻居节点的数目7 S1 D; ~. J+ T. U
trade-time0 [- r8 J2 r" ]% k& S
;;
当前发生交易的turtle的交易时间! G0 o. U/ }1 a0 D+ x
appraise-give
% c" `# T" T# o: X2 O2 L4 s;;
当前发生交易时给出的评价
) L6 L- k6 o) _' @4 ~" Bappraise-receive% M, o5 K% J0 i
;;
当前发生交易时收到的评价" I" Z- y1 W4 }9 s
appraise-time
- ]; L, W' U, w3 S7 \' q( @;;
当前发生交易时的评价时间7 ]# O+ K" H" p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& F7 m0 H" g0 Y/ Y, b! l( Ltrade-times-total: A1 V* |5 m: t$ I1 z) D, q
;;
与当前turtle的交易总次数
9 D9 z/ [: r- Y2 H1 l# ~trade-money-total8 [; {% Q' ]& X3 k! Z8 C
;;
与当前turtle的交易总金额( c9 I2 N* q; K- @* n% A
local-reputation, B  I- x) j' w. X7 F
global-reputation" z3 s) C& X0 M) p+ v1 X3 J
credibility8 G7 L7 T; Q- u# d
;;
评价可信度,每次交易后都需要更新+ q2 x. g' j) o- t" `9 x
credibility-all. r7 r. ]# |- [2 n% @' F, o
;;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9 E$ Y4 B& {; x( g5 F8 [

! R6 t/ f1 Y; b6 C' a8 X; a;;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) O8 r9 d  f, A% Q8 @
credibility-one# ?0 }" z" d2 h# ]" J7 m
;;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* L: s4 k; f( k6 ]+ c! C7 F' T
global-proportion
" Z; a, `- z4 Dcustomer- M* k; Q$ Q+ b. n& m
customer-no% T3 z9 [7 {. T* R$ ]
trust-ok4 A# O& F" S; B& {0 h" ]. c/ Z* Y* U
trade-record-one-len;;trade-record-one的长度, `3 }9 P, t: r- q4 M# s. }
]
. u) D+ N: }4 e  g& H" N  ^  f$ B3 g2 v) F
;;setup procedure9 w* B3 H. L( j- V; I, J

: N3 Y: _1 ?6 T2 i/ Z! x3 Lto setup
  G5 ~/ r+ p$ {% w; a  e2 x# Z) k8 `" x4 D6 ?: B
ca
6 u5 ]* h1 T. u- d9 m( r  L9 \, T
+ X: t- |8 l, i$ B
initialize-settings

9 [& N0 I* {% [1 I8 z- u3 W+ D% ^4 D
crt people [setup-turtles]

  S0 K1 m( w( A2 Z, k! D$ L, K4 |! b- I' A' F, b9 v4 @
reset-timer

+ z3 @0 A! h+ Q- M) Z3 N. B7 J+ ~: i; N: L2 S% j
poll-class
  V2 R; d0 B2 [# g2 t

: a$ a$ k  Y( D( ]  gsetup-plots

  v6 m* ]2 B+ ^* H, j9 k% G
4 C' e9 g3 {& N, {3 g: Q( Fdo-plots
- U7 U! O: O* y7 O' Z  d  F
end
3 i! n" l9 n/ o# y% d
& ]* |6 X) E# n6 X- e- j+ Wto initialize-settings, {* a' {2 z, a9 U& @, v1 |' r

' w# ~/ k9 q& X1 ~' u/ Yset global-reputation-list []

8 r" I% B. j9 T3 e" V5 f  I9 H" o1 S: v$ B! Y: F
set credibility-list n-values people [0.5]
6 Q1 g2 l- s  U0 D, s+ c  J. W
: i5 n6 h6 f. V5 Q; e! Q- s
set honest-service 0

( U2 L6 {, j/ W, G& r2 L* |
- [. E7 C4 r" ~& U- X* `set unhonest-service 0

: J/ e( u, M, e0 I9 e% D9 ^
4 v9 O1 E  I* W& Nset oscillation 0
0 k7 o( G9 [* c& e! d
7 A# g- G% `* s* V9 G  }$ _9 @2 G9 k
set rand-dynamic 0
( |( g! E+ c% D- O
end( U, k2 o0 H8 L( _

% m: k" [2 g- |, O9 tto setup-turtles / `8 z& W5 N2 t2 _" v2 V3 y5 a- N
set shape "person"
5 [! b8 Y4 v( x2 {, {7 J& ?. hsetxy random-xcor random-ycor
. w: f: d' `+ ~1 J' ~2 V$ Lset trade-record-one []
; N% u4 p9 b% Z) {1 j0 }( B
# }4 }$ i  Q' }" @. q' p; \
set trade-record-all n-values people [(list (? + 1) 0 0)]
, z( A3 U. Q# W! @& t* \

2 \  h& H7 ^; A" `8 N* D3 H* xset trade-record-current []
+ d* p" Y* w) }$ m9 @& Uset credibility-receive []' K5 T, ]$ ^4 l+ s5 g
set local-reputation 0.5
. H) R3 V2 I+ j# v$ y3 n+ nset neighbor-total 03 @0 z+ E- t! H' j, q  j- O
set trade-times-total 0
) Z5 Z$ G9 i9 ^9 `set trade-money-total 0
& T, ?5 K9 v4 Oset customer nobody$ H% o" G- e8 {7 R- `! Y
set credibility-all n-values people [creat-credibility]
( }# t1 K2 N0 Q; Zset credibility n-values people [-1]- Q8 ^! ]# }2 F3 x) u' |: c
get-color
- }  v# ~! S  |' k5 u' Q+ x, I
6 H# c* Y! ]. j1 _
end8 C8 {# n8 X! o

8 C5 u9 B( m& Z7 B! z- x( fto-report creat-credibility) i: X; j3 x. M" R: e! X% |  A  Z
report n-values people [0.5]; F; ?* e/ N! E% ?6 r" z5 {
end
2 N5 ~  o- R) l4 a. d& ]" T
* W2 P- _" l0 _: m+ lto setup-plots/ ?" p7 u& Y  w% {7 \% \

3 _) e# _2 |' j3 s' k: Eset xmax 30
* D1 N7 o  C+ B7 c0 i) S, @& f0 [
8 K) m2 }  _% i0 S1 S2 W
set ymax 1.0

: I2 n  I, {) m$ |
4 S  N; q+ p, c) x4 C  O0 t1 sclear-all-plots
8 Y+ i, P4 E' X* q+ _  L

' n/ k) w2 S* F' P# q8 Hsetup-plot1
8 J% K  D& g  H# l* U5 \

* r+ g. f% E: q& S3 dsetup-plot2

$ Z% y2 d7 R* t2 R/ U8 _/ ^/ _' V$ E; {2 k5 n" l8 Q
setup-plot3

) N) d! v- Z! R6 F: o7 P* Dend  T. p! l7 D$ n& ?5 U; N

6 r- U& |) x# i2 F9 Q& I* [;;run time procedures
1 I( p: M. E3 L8 F! E0 w, L) f: E
$ `4 j, d4 A' k9 Z1 w& |( Cto go, @: W, o) ~/ H- S8 O

# X! K2 g) [5 ]" bask turtles [do-business]

, M8 ^! h) ~+ k8 p4 oend, j( I& _1 ^) o) E' T. N

9 E' G& I5 p3 B0 C6 W" qto do-business   r+ |4 b: r. A$ E+ f
: Y% F4 g+ A2 E

3 Z; \% r  ~7 D. Y( `rt random 360
  O! J" W+ R# G. u. e
# P+ C! ^+ N/ e9 ]( I
fd 1
. e: c$ L& w$ N3 F6 S
9 Q3 u, K1 F/ ?1 s. M# L- l
ifelse(other turtles-here != nobody)[

4 c) i7 V& S4 ~7 L- F
. l& o" G$ w: D" l- u) Lset customer one-of other turtles-here
# [. `/ z1 c* g& c: r

% ]. s3 u& O: ^9 o" M;; set [customer] of customer myself
3 r% M( e% G& z6 P! U

% L+ P/ m- C( i; ?; G) x; jset [trade-record-one] of self item (([who] of customer) - 1)
. N$ @" y& b9 ~' E) @[trade-record-all]of self
7 s. O  t6 t& H, R# P6 H3 E;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ _7 s1 U$ h* l9 n* V" H
: _9 V2 e3 Y7 H) ^; F. D5 }set [trade-record-one] of customer item (([who] of self) - 1)
8 ?' F, j2 a" h8 @8 K[trade-record-all]of customer
8 I" w" f& h0 g& Y

+ W1 Z. O) l# c! Zset [trade-record-one-len] of self length [trade-record-one] of self
5 I* q+ c/ x9 f
: U8 G7 m! e- J# e# S. g
set trade-record-current( list (timer) (random money-upper-limit))

& g: @6 E( a2 @9 K
0 ^5 E- @) U; k1 Cask self [do-trust]
' a( t3 q) o2 x/ E1 O4 l! z2 C. T;;
先求ij的信任度
/ i. y7 h9 p# x' n7 _; Y! T5 U
- A5 \( v( X4 C; q* ^if ([trust-ok] of self)
- ~8 x% ^" G' C# d;;
根据ij的信任度来决定是否与j进行交易[
/ j1 o$ v- P! [6 aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 B9 u6 I9 H7 T4 k2 @4 T1 M2 D) C: _/ L1 `+ q
[
% }0 O8 p9 \8 q/ j! d& w

' X8 w( L, Z7 H: fdo-trade
# ^. f1 D/ c& B1 r

" u3 `: A; i) \6 a! Y5 h6 {update-credibility-ijl
+ Y* F% t: x+ ?- P/ E% G. b+ k9 G" ^

& @1 R5 D. `9 Supdate-credibility-list" J6 X  A& A' j; i3 L+ C7 L

3 F$ `& V$ X* |$ g- ^3 s- Y0 ^
; P- p) b, i* s' R, rupdate-global-reputation-list
8 d% ?' G" x. D. _: r
9 C: G4 k& t$ q
poll-class

* Q+ T* K/ K% J; D5 p: Y" s+ B* v* S
get-color

- A+ m, x4 v+ @1 D. H
4 T' @6 M9 w- V# w]]
0 h! |$ `$ Q: q% W: L2 [! J2 H0 M9 u$ Q% P# l# t$ o
;;
如果所得的信任度满足条件,则进行交易% A5 [) T7 P- Z9 T) X1 G3 }" T

. K; [& D! C' e[
( M2 k9 U( P( w" n0 P6 J2 `8 R! s

2 @- H: N: n$ d; s: v/ Grt random 360

8 u" T% X" J* Y0 \) I8 D- r1 y+ M% y( g* ~. u
fd 1
9 k' S! I4 k5 r# |  O2 k9 e( n# i

# F. x  `9 T! `4 T, @: o3 o]
# ^) y8 Y: j" f7 `9 X' ]+ B

, T7 O. H8 M/ O/ Yend

; r6 \! e( y$ V+ W* a: d
6 Z9 j  \* N; v: a& w% D* M6 U# Fto do-trust
) g! C7 Q( H( p! n8 Jset trust-ok False$ I# Q' J3 V, \' t

. ~5 X- t  c' E' V0 R3 Q2 Y& w

: F" D7 F! a$ \1 I2 |let max-trade-times 01 f& b; I" w7 e6 H- I5 m- U
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; Q, z/ I, h' u$ ^! D) a  ~% A4 z3 tlet max-trade-money 0* T0 _! i- w6 k% @/ S# W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( q( a. o2 t' slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: h+ T' ?4 s. y+ x- j$ m! r  y" i! D/ W
' X( c; b3 v) o, j1 X( O

" l* O: T* }0 T! r5 ~! \# @get-global-proportion
0 b7 j( D% S* z" |( Ylet trust-value* e3 W3 S: [; P6 e9 H3 s* k' 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)

: I% ?  k! r7 D$ eif(trust-value > trade-trust-value)
* S7 Q: P- S2 U2 q/ L5 |[set trust-ok true]$ x; |, m/ k$ @% Y2 q
end
0 h# T. b0 \9 B3 j) C% F- E# ?2 b% V8 J  s" k
to get-global-proportion
0 a& x% j7 O" E: xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), v# Q) S) ^. t7 r9 b# \/ Z
[set global-proportion 0]
" F7 }+ t5 |# N# {* i/ L/ M* a. z[let i 0
$ }1 I8 x& n" a5 ~let sum-money 0
# {8 b6 I  W( |5 \) `' z  P2 b- Mwhile[ i < people]+ M: H8 H6 G  _* {; q" j+ J) o
[
+ K% G, f9 Z  pif( length (item i0 s/ P* h% p. T6 S; C+ ~$ [
[trade-record-all] of customer) > 3 )
1 G1 M* m: B4 y" D% `+ X! j
[
$ p, x5 I. I6 ]7 wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 \+ G% N. K* p+ l: F& G4 k
]
; ]7 `1 f4 o$ f, I]
, ]- [( C; i$ r% W+ \let j 03 J, [0 M& `! R0 q% j
let note 0
6 ~7 L; y6 t, S; x2 q2 Ywhile[ j < people]% N9 E# e* q- z7 r  s7 l: O
[% |% F# K, N6 `5 C% w' ]& x0 w
if( length (item i
! \" C4 F9 }7 c; e, q" t; ~[trade-record-all] of customer) > 3 )

; ?# S7 B% l& v9 ~) }/ F, V[
# V! ~6 `) _9 P3 c9 z5 ]* P7 F# eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 G$ U3 E6 A0 m$ Z$ B/ I! Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" f  e, x) [  U: I6 w! ^
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% A& z" m) L. q2 x! E( t]
7 o5 A; r2 I) q, X! {- n: Y1 h]
6 Q, q3 `" G$ L9 G0 y) e0 F, C( a/ Sset global-proportion note8 P* ^0 ]" N9 A  t% }
]( t4 J* j/ N( G1 o! P% s9 |
end# O$ G8 p* s% ?) D0 s9 ^( m3 J

+ C0 b# p& ]3 @to do-trade
( N4 x1 G6 |2 Y% R0 E/ h/ y;;
这个过程实际上是给双方作出评价的过程
/ r. N' Z2 P( ]9 d% C9 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( N/ r: G* p1 C# e7 w5 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* F# Z: S, P  e% j" q& J" H# Yset trade-record-current lput(timer) trade-record-current
! `. ~- L. B6 k! m5 [  o3 b" W;;
评价时间
# s( @8 ?9 u9 A9 ~2 W$ ?' [6 \* Cask myself [
0 w4 \4 b9 m5 V3 u' `  \& oupdate-local-reputation/ J  C9 `8 \, I" m) M1 h- j0 M
set trade-record-current lput([local-reputation] of myself) trade-record-current/ f9 C; y. O5 U9 M& S; _/ V' J
]$ P# i# r# [# t
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 S2 K# U" T/ U. M  z2 h
;;
将此次交易的记录加入到trade-record-one
1 m; @" q3 W2 h- U; dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: e5 q+ i) w1 u% }0 R. T; n6 Glet note (item 2 trade-record-current )
, z8 s# i! n* j4 S8 Vset trade-record-current0 m* {" p( Y: Q  y! ~, W
(replace-item 2 trade-record-current (item 3 trade-record-current))
" T5 q7 b" e" Y6 h) m8 e
set trade-record-current
4 d" j# F* T0 t8 q(replace-item 3 trade-record-current note)
/ o- r* \6 u4 s" I, @6 V
& m1 P1 ~. x& P- F
$ ?( b9 E( E5 Z' ^% k
ask customer [
" A: C+ j6 S. U. `$ f$ cupdate-local-reputation
2 k. {# v+ [* v$ K: x. o8 uset trade-record-current
9 R$ d  i, X4 s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# T" q, V- N# ?$ B6 A
]
0 ]; e  f' }* P( B8 C# W$ o  }0 `6 {4 G) u
( z. |9 Z8 y5 R3 _) F" `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; V0 B% _7 @3 m8 ^
( h# k% A# b2 O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% ]( A3 z- m7 @4 |. [. E- E;;
将此次交易的记录加入到customertrade-record-all: h- `" k3 N/ E! g8 T& \& Q
end
# `$ x% G  k0 P- _( @) [
; N$ e2 {1 ?3 q7 ?* t$ y9 d4 W, ito update-local-reputation( t+ @6 b# _+ `& D# {
set [trade-record-one-len] of myself length [trade-record-one] of myself
- F, J2 t5 K* q; f" }6 w
, E( y, g; h4 {4 U1 @! d4 D3 q9 I/ d% m% @$ t' P" ], ?
;;if [trade-record-one-len] of myself > 3
% D6 Q( i' c8 _5 y/ b) v7 l. ~
update-neighbor-total
: Y# y$ i6 ^. W7 C3 @1 J) \;;
更新邻居节点的数目,在此进行
3 \7 }" y7 G6 _) P$ Flet i 3" H4 W% ^; f" s* }- W" Y! s
let sum-time 0
5 r6 p& j! t0 p3 V( _while[i < [trade-record-one-len] of myself]4 W' r* h% \0 a) F. K& I
[
, ~4 s! ?, R$ Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 b0 p' j( X6 Yset i
3 J) ^% ?* C8 p* K7 T2 F5 f+ I( i + 1)
  G9 t/ _  e1 ~4 ^  u! G
]+ F& S- E8 ?* E% y: A: j
let j 36 Q5 V9 x7 q* c) X9 D# \& o
let sum-money 0
5 r) R; t) H% |while[j < [trade-record-one-len] of myself]
6 @* F+ B+ q+ D4 c2 T# K[
1 e* t) e0 D) f+ kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
: p) s2 n% H- i5 R0 e% t' ~set j1 b! m' S! O5 T8 l% R" e
( j + 1)
- c- z) {, q2 }6 n
]
' O4 D! y' V6 F- z' ~% B, M+ ^: Xlet k 35 Z$ E2 ^( j$ _
let power 0
& v3 ?5 M4 \6 r1 R/ [let local 0- R+ W9 K$ R5 [9 Q9 ~
while [k <[trade-record-one-len] of myself]
7 y+ w& O+ s5 [2 w! F! R. c# a[" b" a+ ]7 X4 F; }0 D) M6 O$ B
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)   O' \( ~4 D  U( Z+ k" N
set k (k + 1)5 g  _# T7 c' c
]
% \) H" j8 ]' l, _3 ~  Eset [local-reputation] of myself (local)5 b8 c! H, v* b  p/ }
end, b9 H  R$ q5 i1 s3 m

3 \6 ?% ?, }, C" a8 wto update-neighbor-total1 `: i8 I& N. {
7 {2 D% b- e4 m" N$ M  d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: W# S7 b) m3 C. X3 h8 U

& L$ r  w1 M' L- q
( i7 e0 N& M4 Q% f) Z- K4 p* q
end( }5 W) W6 S) J
. j  a% q2 a/ s) I, w2 u( T
to update-credibility-ijl ( O9 ~+ @. j& R+ t
. P1 k; o4 I6 a; x$ D( m" l
;;
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。
9 k3 j, N9 l2 T# s. tlet l 0. A+ V3 c. R* I- I6 V1 T
while[ l < people ]
* O! j  O7 L, x- j/ [2 i;;
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) O8 v5 k& V# y) G& P! H; R
[& a8 ~' m* }7 R8 V( n
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 j" }3 f6 i3 z" O, M) W- D( n
if (trade-record-one-j-l-len > 3)+ i* r  J0 C; m; j, S; p0 e
[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* q: K1 B7 ^: M! I
let i 3
# a, X& z. r0 ?, |* C! A" `/ olet sum-time 0
6 w; `2 z: l/ T! \  \, _while[i < trade-record-one-len]* L3 `! a1 ~! n& y) M. N$ a
[0 [% A/ W" U" `! I; p/ N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). S4 W4 b" D6 x* E) F8 y/ P5 q* b
set i. {  d* T7 E' @6 ]& i, h
( i + 1)

' H6 s1 P9 G* q]; p; A6 J8 o) @- L9 e
let credibility-i-j-l 0
3 C- k4 u4 S( O;;i
评价(jjl的评价)
, C* |7 \3 [% \8 _! Wlet j 3
/ K: [0 ~/ ?9 d1 F8 olet k 4
/ Q6 L3 ]8 Z' Nwhile[j < trade-record-one-len]
9 p5 p! U, a# k! U/ {[4 F8 }( j2 p: r
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
6 a- m  K; {" \+ S: P1 {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)5 z5 _7 a  l  o& C$ _+ u
set j
5 [" b, d! G  o( j + 1)
/ G* _3 V8 i" m' r9 X
]
- m1 Y7 h% i- Z0 ?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 ))/ n9 p! \+ ~3 m- J& i% ?; c

7 {# f/ s! y- W2 b6 }7 e
5 O3 ^. v3 U# H( B+ H: C! l* D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' j) E: R; b0 U! y
;;
及时更新il的评价质量的评价
  k/ }3 o  ~# {' b, X  [, Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ _1 S2 n; w1 Y0 q
set l (l + 1)
8 ^2 d5 \# i8 n2 [1 n# Q# x2 j) O]
; c; Z+ Y* i: L; K" D) `6 y2 tend: P* S& Y$ k% M- s5 X
1 K0 L4 L5 s, S0 n( S
to update-credibility-list# d) b$ o0 k) I4 |+ G9 Q
let i 0
# {3 t; T* P; Q: t0 ~5 e9 h- jwhile[i < people]
% m- L6 c# c" |3 f0 z7 s[" e+ Y, z& e8 Q) @  N5 E2 ]
let j 0
) o/ K9 j. @) [$ p* B2 olet note 07 w4 }; z" k/ _, \4 M! b5 h
let k 0% Y6 Y4 ^* X' A
;;
计作出过评价的邻居节点的数目* }9 e& g5 Z/ K0 X% B) E
while[j < people]
! _( F# g$ g- a9 Z, p+ [% R[0 h" ]  j) N: i. s) D
if (item j( [credibility] of turtle (i + 1)) != -1)
( l, k! U8 ]9 z3 A5 B4 J) M;;
判断是否给本turtle的评价质量做出过评价的节点$ y1 w6 p* `, B- `5 C* W) N0 r6 h
[set note (note + item j ([credibility]of turtle (i + 1)))
6 @5 U! e6 R$ @! ~;;*(exp (-(people - 2)))/(people - 2))]
, G( T" Z8 d# ]7 _+ S0 u
set k (k + 1)
0 s" i4 H2 k! R2 _4 X" p/ R# ?]5 i9 s  n) w# h  M. a% U
set j (j + 1)
! S# n/ S6 F9 R; I" c]& T  u- y3 ~3 @* g
set note (note *(exp (- (1 / k)))/ k)# _# y8 H5 t  A
set credibility-list (replace-item i credibility-list note)  s# O9 S- j! [- y) B
set i (i + 1)" Z' B+ T, O/ p$ W% x: A; b
]
9 |6 u8 T8 W7 \7 r) n- Send
" H$ T% D% y  V8 J: r% u6 P, a
; l4 A4 \# ^3 C: k* U0 @* @to update-global-reputation-list
# P" z% R# Q% u4 p! olet j 0
: R7 L% ]5 _  h7 G& w$ R. Wwhile[j < people]
/ e: @  \& w, q5 i9 N( M4 J[
* F. }6 r% f& L+ xlet new 0
7 ~+ w: W7 x7 c: B;;
暂存新的一个全局声誉. S* b& g3 A- {& {, e0 g: T, X& o
let i 0
! P% j# W7 _  V# U% [; ~9 ^: A  Llet sum-money 0
. ]& q4 p, n: h# {) C5 {5 j' blet credibility-money 0& X1 f0 T1 `) m: R7 {& c
while [i < people]
- C, K% V3 A6 s[
8 D; @3 C. z* G# n# N8 G5 @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( M3 M; V. Q: T$ Z% pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) l6 L  [4 x5 ^, C1 m$ ^/ A( r, `
set i (i + 1)1 s; M/ ^( r9 I9 d4 i$ P: |: K# \
]
6 N1 G$ D) v3 ylet k 0; _' w! L* i, c! J: v% h/ c! M
let new1 0# D3 \' d; L, x' }! ]) H
while [k < people]
! z! W; w8 }) a5 R/ @[
6 Q! e, X, j; c; j/ iset 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)) O. Z0 y7 P" J5 z8 ^2 w
set k (k + 1)
' \; `! F2 J" K]
9 m: C0 F9 z$ h6 d5 F. rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. O2 z" r" s/ I; W3 lset global-reputation-list (replace-item j global-reputation-list new)
5 N( K2 n9 w# J/ [; qset j (j + 1)
) L' v( ^7 F7 w7 X: `* K0 _$ \! p]! j/ Q1 R  I2 [# j7 u9 X7 {9 Q
end+ Y, ~" Q; z& n
3 ^) k/ w7 ?5 h9 h+ k6 E
6 E5 X7 ?6 E3 r

- P* o* y0 v4 U: U/ C: H3 Z4 j) @& Cto get-color
5 j% z9 P! a5 t" o" ~5 Z: K) s7 k* H. o$ E+ A! E
set color blue

2 x0 r% I4 T4 c4 yend1 I* t2 i$ M' M# U3 X

! b, Z% k5 I. gto poll-class
3 S, J+ f8 B# fend
& C0 k. T+ N" k# A# y. O4 }0 _/ F# d& Z4 h+ G# F
to setup-plot10 C3 c0 Y& u. z' k) K6 g
/ f  M8 K+ n0 p: g# J
set-current-plot "Trends-of-Local-reputation"
3 z( p/ j9 Y: w  @' ?, L" S

9 p( \0 N- z7 }& i! t: g2 Q) Bset-plot-x-range 0 xmax
' ]5 j& P% W9 Z* A8 E, p3 j
' t3 `# r$ C9 R* B* x* l) n' q! r
set-plot-y-range 0.0 ymax
# E5 m6 b6 t" u% U% m
end
0 m( E3 w( x$ Z4 E+ B6 k, q) v1 k7 A9 @  W7 o4 Q
to setup-plot2
$ D0 L8 m" @, @6 j
# W7 N6 z. p" d- Q0 F* k* Yset-current-plot "Trends-of-global-reputation"

  Q, L. A& t% e: d/ V- ]" J2 \# v
set-plot-x-range 0 xmax
* j3 z8 j3 u1 a# _3 Z3 L

- a/ C& D' d, ?5 v, qset-plot-y-range 0.0 ymax
& N* ]; a( m6 m
end
( Z1 z- Q6 M, X! e, \9 e* G7 m# N. o" z/ b; \& M% S6 ~2 d$ O
to setup-plot3) a5 G/ l: ~/ o0 B1 ?1 E
: f, `  I. a: {
set-current-plot "Trends-of-credibility"

7 C/ w1 X( S( r  M, {+ n
% a' a+ j! @& _& \5 Eset-plot-x-range 0 xmax

9 X# I9 ]& z. r
, _, ^" q/ E* n0 g" B& W6 |9 e- Q) qset-plot-y-range 0.0 ymax

# r; o( b: O" O8 ^( y! _end# `6 {  m9 s2 B8 \% N; l8 }

2 Z" ^4 Z0 |, ]! w9 k  Xto do-plots  \3 z; \( z* Y% w
set-current-plot "Trends-of-Local-reputation"
8 H# ~1 u7 d8 }; R! E* X+ vset-current-plot-pen "Honest service"% n+ k/ k4 Y& d* X8 R* i
end" C3 o4 L/ ~  j* s6 i
8 w0 B: p; U3 C" s' q/ i
[ 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.& o/ ~3 ?% b1 X! ^; j. I
2 X( r3 X+ q" Y! G' d! x4 c
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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