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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:
- x9 z6 B# [" G9 K+ [- h/ mto do-business ( V, B" V) a; u: B" z# W1 J/ U
rt random 360
- R! N9 }2 J9 @7 j3 |3 @* J; | fd 1
' L7 G- o% T" V ifelse(other turtles-here != nobody)[
  Q& p; N  x5 y% J9 ~   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.# @: [; P+ T1 L' g& `
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: ?$ r0 y. T  `! n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 \$ c, n% O2 B* O: c. r   set [trade-record-one-len] of self length [trade-record-one] of self7 Y6 i! n4 b; d" K& E( a* B! O& b
   set trade-record-current( list (timer) (random money-upper-limit))
8 D0 ^7 d0 k0 v6 v" m' K7 B
8 X) ]" g" Y3 p: M0 q; t问题的提示如下:* A& ]6 O6 q2 X, F# I* ]

5 w( \0 G  _  W0 o2 G! C2 \error while turtle 50 running OF in procedure DO-BUSINESS( [' B# s* {7 T- h$ w/ V
  called by procedure GO2 p. o, P0 }, s" \& j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 t- ^3 R2 x3 C: _
(halted running of go)
: I3 [! {1 k4 ?7 a) @! O8 u" O# m% L! a* A. P* |
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~~
9 K+ s( Z( W% l0 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1 P& q9 I9 k3 p  _
globals[
3 u4 `: D5 o5 ]4 y; H* v8 |xmax
  G' F( Q  ^: X( G2 s/ @ymax
; R: c% r0 E) a& P0 T7 u+ |$ Mglobal-reputation-list2 m. K! P3 r3 m# {
+ m6 H8 I5 b& k% G4 |# O
;;
每一个turtle的全局声誉都存在此LIST
8 {/ h8 z, q- z, f% r8 p: o% bcredibility-list! B, y; E6 ]+ {% H! @
;;
每一个turtle的评价可信度  a' |1 u. s$ Z! p) f
honest-service
8 ?2 F- \& \. T* w6 `9 Z" aunhonest-service$ ~4 A8 f6 G% A1 D5 A1 U
oscillation/ i. W/ S* N( @0 N" N* ~; Y
rand-dynamic
! e! ?$ Z- ~5 \# L7 a' F]  u5 _* g5 A* P

/ ~& [' n* u& \3 W: eturtles-own[
% Y% A( v8 k  @+ I7 U' Ntrade-record-all
+ X3 s2 R# B- R8 C- ];;a list of lists,
trade-record-one组成
" y6 w+ I7 I2 i' A/ O2 @, n" a% ttrade-record-one
2 p% p2 a4 ]! J+ f;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 ?0 S" C, h; u3 E( P
1 f  T  l) ]0 ^0 z0 ^& a5 ]+ q9 J
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
6 v% w2 u4 F$ q7 N2 Y1 ^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]
. j. V* U; W# @2 j0 vcredibility-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
5 T' D" h: M2 q% o7 zneighbor-total
$ i. I! y' V; X0 Z( x. A$ g  U;;
记录该turtle的邻居节点的数目
5 J- s; S) r7 e! G" e0 F4 Utrade-time$ u) h0 I  ^( L3 Y* b
;;
当前发生交易的turtle的交易时间, o( c( l! q+ I9 T: X) a
appraise-give' A; N/ c4 ?) d8 y
;;
当前发生交易时给出的评价
9 f$ ]5 a4 x8 ?; Q4 t# y0 Fappraise-receive/ x3 B2 D' Z1 @
;;
当前发生交易时收到的评价/ {8 f9 @8 @  B) _& ]
appraise-time
6 N, q) @) G2 O+ W. P;;
当前发生交易时的评价时间
* T0 `* L4 [$ o+ m, I# Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, a  E4 n! F: P+ Ztrade-times-total
2 j; v1 E+ C% h;;
与当前turtle的交易总次数
4 E" r$ P! ~" n1 u+ }trade-money-total* }5 E$ @5 L# [3 X0 m/ p3 T& x; {
;;
与当前turtle的交易总金额
3 a  T. u  X+ q# S& g' U1 alocal-reputation/ W$ y( T% A! b  H' E; C
global-reputation1 C* t/ {6 i5 g: `. e
credibility% [% C0 f* Y1 T  q; H- P* v
;;
评价可信度,每次交易后都需要更新
, h* a! G  {4 J5 vcredibility-all
# L) p. Z* X! R$ }4 Z8 z' c# I) I: e;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据$ ]0 t9 a# l9 m3 l2 i" m
* b# T/ S# i) S7 s( Q  S
;;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0.57 V: D, H) B" r3 E  D7 A
credibility-one
/ V& F# R8 z3 Y9 Z% z3 g9 ];;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
7 s& ?& _- r! h6 y# I$ b; h4 \global-proportion
" V( |1 t4 c/ Q5 l7 icustomer0 r. m& D2 g2 d, U( X- [
customer-no
3 }' q% N5 t. T: W9 _! P" ~trust-ok2 d9 f; A- [; K
trade-record-one-len;;trade-record-one的长度0 Z6 W0 Z6 X4 u9 ~$ g8 H( Y* a5 h( ?
]
% m% G3 h+ `' L' E) y! `3 y/ n
. C6 [4 ]6 v3 E5 _;;setup procedure1 }9 I! N) g, Z& ]

. M9 f; Y/ B2 N7 w! Z; Gto setup  a% K3 D, T" t1 e0 O1 S3 K

0 w- ]/ J' W) s4 ]: Yca
. ?) W' v* F- P  @2 {0 ?4 N- [

) N' j  x1 s6 e% U" Winitialize-settings
% j7 X& Z/ @4 H/ g8 q2 R. r

! Y. U; c4 @7 ~0 Ycrt people [setup-turtles]

7 @: B4 S" Q( ^+ q* m
; x4 x6 a/ `" greset-timer
" H+ a! z, [( D" D3 r9 k

- u! I! l9 ^+ n4 K6 I  }poll-class

; t7 [3 v  [; w8 a8 S* Q. J: ~* P. S( j9 q
setup-plots

' @+ d; q) J* _3 W" [4 E
5 N7 R; f% [6 ]6 Zdo-plots

8 J* z! W# I# ^* T. [9 y( Rend( \% M+ ]* b+ J

+ p4 Q( X  h  Q* x1 Q4 ]2 D. p' Ito initialize-settings
( `1 Y* c# `0 M, R3 \- P/ L% [% k- {1 f6 R1 D& @% h
set global-reputation-list []

( _- u6 b3 \2 Z- q5 a* j5 t$ e' j' Z! D% B6 v
set credibility-list n-values people [0.5]

; l: t8 C% T6 a% e0 @1 |* H/ j. |; a: p( ?8 w5 r
set honest-service 0

: d+ H3 [. W: b& q) u: Y
4 q. z2 P# M5 s  }& ^. Sset unhonest-service 0
' A2 N# k  m" a3 t3 z

& `! c2 A  A3 Cset oscillation 0
# B! d& s, ^( `7 Q& W. S( b. h' k
1 ~8 d6 l' f5 W) P) `# f% v0 }7 a  v
set rand-dynamic 0

  {1 Q" ?" E: G$ }  x: aend$ L9 w4 B% w. A3 F0 O8 J( h# S
& ?/ T. y2 d, q' X4 q/ `  j
to setup-turtles 1 l! R* C3 E0 o5 g: V
set shape "person". X; `: D$ p5 B! U% k0 t
setxy random-xcor random-ycor+ W$ ], V" g# g% L% h- t% d7 o3 n. ~
set trade-record-one []  \6 p) S) \. d- d& M$ z1 ], M
8 w$ m" Y6 D. o9 i/ s5 g- b
set trade-record-all n-values people [(list (? + 1) 0 0)]
& v) U  m  N; E/ E
8 p, V9 I# C- \9 N( n, u+ Y' F5 t
set trade-record-current []* T5 z% ^8 U& u. f& Y# W- t
set credibility-receive []
/ x8 K1 I. b9 B$ Fset local-reputation 0.5
' ]; x5 ]$ ]1 A/ @8 j' ^set neighbor-total 0: j7 j2 W& u5 F" i  Q/ ?; v
set trade-times-total 0
" z: L0 y$ o8 u$ Sset trade-money-total 0
) T8 x" J( i+ y8 E" O  Hset customer nobody- b8 i: C" G% x
set credibility-all n-values people [creat-credibility]
) P- E+ f. D; \2 z4 Lset credibility n-values people [-1]
( g, H, L9 t( mget-color2 f+ V! Q* e7 h$ |" r8 W! R5 J+ t
5 c/ A1 p" {/ O& G9 r8 E* ^/ f5 Y- O' Y
end7 y$ w7 z& ~6 N

. m* T3 o3 B  m' r. T7 K% kto-report creat-credibility
, t% k7 e9 S5 R% i3 B& M# Lreport n-values people [0.5]7 J+ a8 B& `% d, M8 {$ o
end; J& M) p: q* _/ W
5 {' C# U' C9 {/ t$ e0 U, ?
to setup-plots
7 V6 k2 b. N$ j7 G! I% c; b. [- D6 l, I# ^5 I" ?+ S2 ]' O
set xmax 30
/ U& D8 X# G4 _1 Q3 {/ c( o

  M/ K- W/ D# Y$ o$ {* G" ^5 A/ yset ymax 1.0
/ p. O+ X7 s6 ?5 ]/ m, g! n

' P# r! R, B4 v8 e7 J/ zclear-all-plots
, n7 K: {9 K/ k
$ I& m/ m- l# }4 ^" q. P
setup-plot1

( F# {0 y1 y, x3 `$ Z; H5 H
& o8 \8 D' P7 x: \setup-plot2
8 l& g+ R4 H5 U$ f$ Z
* _5 m6 r5 k  B. ?  C( Q* w
setup-plot3

7 Q2 j3 Z2 @3 w/ s# b; ~: Fend- f: i) @9 z- ?$ C7 n

* J7 b; H9 {. l/ E' P9 ?+ s& S;;run time procedures0 x% w( q2 f9 C" \7 C

* |! ]* d* c3 ]: h$ A8 gto go
4 m  j- `# G" c7 L. A0 _# q7 U+ x+ K" C; Q
ask turtles [do-business]

4 u0 ~3 y8 ?4 t/ |end2 o$ x7 G" N$ i) K. g/ T

3 G, A' q* C; D$ l5 e! Cto do-business
: Q, d4 ]6 }4 Y$ O1 S! r3 I

' ~( h3 j' l4 g5 q. r$ n6 G  g/ `4 X, ?
rt random 360
0 W  k; o  w# ~* R- Z

  j7 i$ o, b9 r, Z0 X7 |3 R  bfd 1

9 g* p7 ?8 A( H$ X! N/ D4 G; J, }: }# F; H7 l
ifelse(other turtles-here != nobody)[
+ C8 S4 N+ Q* L$ @  R1 M0 o. z
. o4 Q( Y' @$ \& v' _, F
set customer one-of other turtles-here
) j+ M4 ^* y! \; g: B& q0 O: y
3 M/ G4 u9 D( Y( p2 l, |3 O& z! C
;; set [customer] of customer myself

( f+ {9 d. ^, g$ L$ o) L* W% {, v# Z$ D
set [trade-record-one] of self item (([who] of customer) - 1)
/ x& \" ^3 H1 k* y& W2 K[trade-record-all]of self
+ C  i5 u; y' g8 i. N' X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) y# h6 A: J& @- C' [( ?& @
) g+ w/ R! ~. _; ~! pset [trade-record-one] of customer item (([who] of self) - 1)1 w2 P6 ]1 V! e3 n2 |+ r) y
[trade-record-all]of customer
# `. n  o8 a# @

6 Z  z6 w, ~& w! k5 e' aset [trade-record-one-len] of self length [trade-record-one] of self
* u* Q8 B* m1 B6 D  r

- h, b& a3 g: X; i; o4 W$ ^1 Mset trade-record-current( list (timer) (random money-upper-limit))

3 ]' D* w* B5 y. y1 F/ y7 `" n
2 B/ q7 Z- r2 c' {ask self [do-trust]
. x2 x+ n$ Y# M9 B1 }) w- u;;
先求ij的信任度
) m  {+ N4 ^0 x6 x* _
5 X( b: _3 {4 E+ l  @/ f5 _if ([trust-ok] of self)
9 G2 y+ K8 z! r& x;;
根据ij的信任度来决定是否与j进行交易[/ z7 ?& K" z; ~" A8 U0 k2 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ i+ v1 h# Z! B' B0 L0 s
5 M1 I: P8 V- h) A[
: f- D6 h2 ?; b) \2 b
( K6 {  s  C4 X. Z0 z; G" q, M4 Q
do-trade

5 T, O; g& Z3 f3 p3 t) F$ I
# B2 s5 U2 L- c& s! P) Kupdate-credibility-ijl
" z" A. ]3 d( w+ C1 B

4 ^+ j3 h9 @) T2 \  f7 k2 jupdate-credibility-list
$ s  i8 {3 l# m3 A& k  C- [, P
$ W+ @1 d1 `( W( n7 u* E
. D  z$ l- @# g& z0 T# K
update-global-reputation-list

- F% F- f4 }' d' C  m+ C% _, ]! S
poll-class

  `9 t5 d. y2 k9 w5 i: W+ I5 I
2 w$ t: L2 h% |/ l5 V  J9 mget-color
- ?) l/ n# }% l+ y' M# S% f

1 q9 g2 U! H0 p]]
) Q7 N9 K( f0 o1 q, J4 A
( \* Z6 C; H# @! w  K' ~  q  n;;
如果所得的信任度满足条件,则进行交易
* K( Y& s8 u  C. p$ ?
, E. u! _( ]2 r% o) p# N[

+ R$ W5 W, Z! T  Q/ `& U' u6 t  i9 B% l
rt random 360
) X0 @4 l$ G! ~" n& z
( B/ V! }7 M) P+ l+ i
fd 1

  _0 `+ T" v- _8 J5 b3 Q6 K0 K7 b5 j1 r- t* O
]
* {1 t& j4 R( e1 U9 k( s

! x/ L5 J2 b0 d9 x  f3 u: l! gend
& ^& u/ I/ ?  O2 P. w$ Q
& ~# H6 k! |5 K$ K% L* F
to do-trust 5 l+ Q2 a4 }3 u5 c& d
set trust-ok False0 i9 Z. V% ~1 y2 s% F

8 V) f/ R/ C+ g( t

: Z# U8 @/ Q0 e' [1 s+ s) tlet max-trade-times 0; a* _; t) e, r: W  t: W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 y3 x/ h6 T0 k  d' [
let max-trade-money 0
" i* N- s, r" J, Y; Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], O3 x$ o0 T& P1 B% h& e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' q/ s; O3 R% w, u" \- v* x# Y' E
8 \* A& H# ^# W2 m, S

1 r; _8 f2 f! p- w+ Oget-global-proportion
8 W  l( X4 R7 }# olet trust-value3 S3 Z$ Z& z) [6 B6 u& g
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)

$ x7 o6 Y8 V9 dif(trust-value > trade-trust-value)
7 T3 }1 l9 L# o4 W# ?+ o[set trust-ok true]( G* l8 o  O% P, X5 r) T3 E. I
end0 d3 S6 e2 J* {5 H0 c+ i
, Q* i$ V  P4 i/ B" v5 y! P6 q: }
to get-global-proportion
3 o$ ^2 j* E, i" m" H+ S8 w' `6 |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 @0 n! @4 j# y- g2 o+ H
[set global-proportion 0]
. {( k+ n5 U7 t, O% h[let i 0
7 w5 Q! X( F/ M! M& Q3 h/ x7 y! _let sum-money 0! v$ u" K* M( B0 @  T7 \( q) R! b
while[ i < people]
* t8 c8 _3 G; T+ Z0 q) }3 J[5 V4 t8 P  b* E- W0 d2 P
if( length (item i- l2 t+ k0 q7 e; \9 Y: E0 J& y
[trade-record-all] of customer) > 3 )

! Z0 a+ L7 S  I[
: ?$ L% |0 r+ s8 y3 n0 Dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ a# C; |$ Z. Z) ?% z]
* X: \5 y& e  ~) I# i]* S4 F1 S; g( H4 d9 T6 Z
let j 0
& K' z/ q. ~* f8 D3 K5 Wlet note 0
) \0 I+ t$ b9 i6 o) [while[ j < people]
  ?6 n. B& i- j- v7 Z[- c! U6 S4 N% e1 v1 r
if( length (item i5 m$ q5 M# j: I9 I# |, O, a
[trade-record-all] of customer) > 3 )
- |, c" O' ]0 D9 T
[
" }3 C7 P" ]( w9 \. T0 vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 ^1 Z% u5 M5 n3 X2 o8 Y$ z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" z5 b, N- ~# {& U2 C8 Q# I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! Q( A4 X4 j' ^3 ~+ u]( ]. Q' S- F% A' E) I0 i
]& [" U4 p. f" R
set global-proportion note9 R$ `4 n" l/ `
]
. C4 _- Z  X& x( [end
% b( T7 C7 }4 n9 N( y3 v
3 t) F5 d& z, S/ x4 F; Lto do-trade
  ~- P# m$ q' B5 d8 c;;
这个过程实际上是给双方作出评价的过程7 B8 K  A$ X3 m& y3 l3 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( F2 W& A/ @1 r- H- d4 d" Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ X4 h) Q  L7 v# o6 \# P
set trade-record-current lput(timer) trade-record-current
" Q; v" q* `' i9 ]( |;;
评价时间' R  e! [5 @7 O. |7 p
ask myself [9 |: u" D" ^- @) _& U: y
update-local-reputation3 W) j3 i% o' _: X
set trade-record-current lput([local-reputation] of myself) trade-record-current" z0 r1 S0 @2 `
]
) i5 d' u  |) E" t# t& a5 Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ M( V# o# m1 a; X3 c7 T;;
将此次交易的记录加入到trade-record-one, v& ]) N8 ?4 e, Q( a& J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ c* x4 B9 |" D& b6 l
let note (item 2 trade-record-current )
8 W$ A* N" t( x  q8 v8 zset trade-record-current& R1 L8 u8 k$ k" W8 c6 w% l. Q1 z
(replace-item 2 trade-record-current (item 3 trade-record-current))

- E6 p( f3 ~( B; B# g4 Iset trade-record-current: T& Y' M5 S- \: g) }
(replace-item 3 trade-record-current note)
9 b9 S0 {, w6 i& O' a
3 n9 v$ `+ M* j' u0 _9 M" K! q1 T: N
* g; X% t! J% _( L5 g. s
ask customer [, c; @% ~" b7 N5 e2 x0 {
update-local-reputation9 \  u- w3 v7 G3 l* v4 x
set trade-record-current4 O* K6 x  ?) ^* H* ]7 }* M
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ O  k' s- M* |9 w8 J% f
]- |% {# n( Y, m! U0 ]
; c4 [7 u  }3 |& ?

5 d9 Y, s! s  f+ R2 c# \5 N/ \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 Z) o& B* j2 K6 n

% X9 J" D6 e- c9 ~% Y( @, Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) P+ M$ q# [8 S  _! X8 ~/ I! l- [* v;;
将此次交易的记录加入到customertrade-record-all, E6 O; @, U. h2 C
end
* h( B) D0 _% v" A
, N9 m$ M8 V1 d2 O6 F6 d" X4 }to update-local-reputation
4 P  b' d2 P1 @* Gset [trade-record-one-len] of myself length [trade-record-one] of myself
7 ^0 U0 d* [8 X
4 H4 w, L7 h8 U7 {& i7 D8 g: m2 W8 \
;;if [trade-record-one-len] of myself > 3
: `8 |3 j) E, \* A
update-neighbor-total" Y; G0 k0 U$ S6 s% I& N# O. M3 f
;;
更新邻居节点的数目,在此进行
: v0 O& g& o# R2 G% K  \let i 3
. i! T* e6 d$ M* [7 o+ B  Blet sum-time 09 w# [3 K. d% h7 I* M$ c. w
while[i < [trade-record-one-len] of myself]) [; ]; t/ G0 i6 e2 L, f
[
+ D! K; B6 G' a" Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- I2 r( Z7 _) o" |
set i0 q* U8 R: f& T" Y
( i + 1)
* u% H2 R$ J% U2 z
]' H/ g( ?5 k% _& w, d
let j 3
) N3 |2 O7 K1 v8 M5 Llet sum-money 0& i1 K& R1 q, Y
while[j < [trade-record-one-len] of myself]4 O  ?  |) ~+ h, I+ a' F
[6 |6 ?* u6 g# T& |
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)% w. M7 a( B7 P3 v. x3 m
set j. T% g/ c) T! ?/ U' a1 ~
( j + 1)

/ n/ O8 v, `1 D- c- g3 J]
' Q$ n4 S6 d, M2 [. @$ e* g+ Nlet k 3* Z; p1 q1 C9 X+ K# B
let power 0" r0 {% H0 c* [& e! v4 L
let local 0
* H( _$ {* p7 g* C) P, ~+ k9 Kwhile [k <[trade-record-one-len] of myself]% M3 O, e5 I1 G" z& N; w0 h) }
[
; T2 d( S" M' qset 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) & ?. w$ X9 y' i: D; d+ J- T0 I  l
set k (k + 1)' b/ |7 z3 j3 u7 [
]3 w* }0 I. x3 @' Y" _# A9 l
set [local-reputation] of myself (local)
0 K1 y( a$ G5 D) s0 u* Qend
( W+ r6 l$ U6 }5 }. K# h! D1 @( _, C  X7 B
to update-neighbor-total( a  J: y# W; S: Z

. t% m7 C7 A: _3 V4 P& sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* Q, i# h  i& y4 ?1 a+ G
+ l: Y$ m+ S. A% ^7 K; ^
- Y: h0 p  u6 @$ D
end
* p2 d' E+ f( B. T& ^" N9 a1 ~2 T, }
to update-credibility-ijl
7 E: L# n% H; \- n" V0 k/ n# s6 U
3 r1 l, d- f) I3 [. n/ ?0 F2 g" V;;
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。( l+ h* j& v2 X! B# l1 ^) n4 @
let l 0
. I- _. w' o) M' \# B. x4 dwhile[ l < people ]
- w+ w3 j: T' @, e1 s. 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
6 T3 A* R5 w5 a2 }+ f% ^[
$ h( ~1 t" e3 S% ]1 j5 q( glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  v! l7 N' U; ~' s& @
if (trade-record-one-j-l-len > 3)) y3 v5 G3 B* }( r0 Z& s- H9 P
[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
/ U- z  S+ _3 o' r! }  Mlet i 3
, T. h4 [0 k3 F8 T5 Slet sum-time 03 |& j* f; x2 c' E
while[i < trade-record-one-len]
# X4 z# J- b( L( q( a  r' O4 [" o# Y[
6 q* t- X# l* aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( o" n: @. D3 n; x7 z5 jset i
6 n8 x& q" X* s& W' S5 |* {; `( i + 1)
. }! @/ P5 T2 r4 M; K$ T$ j" M
]
2 n2 R' {% g1 ]' l6 J2 zlet credibility-i-j-l 0, h7 I+ C% [/ \# y+ x& y
;;i
评价(jjl的评价)4 F3 |( j$ ^4 e9 \
let j 3% p# O" |% L7 u0 z: D: n
let k 4, T5 [2 D( }1 ?/ v2 O0 U9 V$ e0 ]
while[j < trade-record-one-len]
% D  `# V: x1 z- d( F4 m[
4 q2 y5 ?' B: @* T/ swhile [((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
$ v7 }) U5 t/ N0 e: P0 p6 vset 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)/ a* R) M% F6 m( q, ?
set j! ]; {  w# Z7 p3 n% y3 x$ u
( j + 1)
6 d, }( T' E4 ~. n
]
4 ^5 l( P- l2 e: [! d4 O; nset [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 ))
  L9 A* R; \( I+ |1 w- N0 s4 Q3 i* e2 ~+ j/ C: ~# q

+ ^  e9 Y. G8 J* q+ Z  klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" V' O* c2 h4 Q9 L
;;
及时更新il的评价质量的评价( X# @+ i8 D! H% z- w' {  K9 y4 H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 {2 s% G# Z" R+ V7 t' u" Eset l (l + 1)
- j: |: E6 s6 \) E; []( y* I. a9 \  K2 t) Z5 j
end
. f4 }# l, ]- F' G' g1 g1 v6 N3 I9 P
to update-credibility-list( P" |, X; p& b: U
let i 0
" _) m: C; F) T0 _! y  {while[i < people]& P) A0 E, F' q; i1 l* o# p6 y1 r
[; X/ J* i0 J+ y) i4 D
let j 09 G) M8 V% ~- y* g2 ~& D& K
let note 0
3 [6 \% D7 }( d8 k5 X/ }let k 0
5 t0 q8 q# f7 k4 e1 n! f; ^4 {;;
计作出过评价的邻居节点的数目
( M5 ?- N4 u9 k8 H! vwhile[j < people]
* k2 t  [  Q2 b% P2 k5 [- ^[5 F) S: o0 U) Z4 p
if (item j( [credibility] of turtle (i + 1)) != -1)' x# f# B* ~# e& }
;;
判断是否给本turtle的评价质量做出过评价的节点6 y/ \) V! t% B1 d, |6 t5 g
[set note (note + item j ([credibility]of turtle (i + 1)))' O$ Q6 |  ]# @
;;*(exp (-(people - 2)))/(people - 2))]
* h; W: B! }" u& x/ `$ k0 t
set k (k + 1)
" y. r8 R6 ^" \; t9 ?, N]2 p- X! `1 h: r, F  c$ M
set j (j + 1)
" @* M; u* q. S, ]]7 z( S" |8 m% e; `% n& X% _* R
set note (note *(exp (- (1 / k)))/ k)* R! M5 H! E. ^9 o1 [0 r2 v
set credibility-list (replace-item i credibility-list note)# L; W$ n9 m7 M" z9 F3 A- p
set i (i + 1)
4 A. e! d! X" ?/ R8 S" t]4 ]0 Y& y6 g( t9 G) ~9 o; Y/ o
end
# ?& Q9 O: g( g2 C" P2 \# a, z) |5 t3 H" e1 d% v
to update-global-reputation-list2 d0 [+ T, z' q3 J, P9 P5 e1 Z
let j 0
# i" y5 u6 D- D( K: Bwhile[j < people]/ w2 {! U. g1 b. ]
[% d( T5 V9 Q' w3 k
let new 0
, k* R% M* N' ^5 `8 L1 o  Q* Y, H;;
暂存新的一个全局声誉
: l* d7 ~# g( Z, h* Klet i 0; b) n/ g" @- y% L6 K, q
let sum-money 0
! ?, y5 h' l- l. W% |0 tlet credibility-money 0
. i* p# n' w+ ^% C/ u  |9 Jwhile [i < people], [2 X1 m4 X  b9 P
[' `. t& ^$ v2 `) @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& O7 O5 x/ r) V/ g( H- ~9 ~0 S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! |+ I- {4 q/ d: ?6 m: ~5 s- N
set i (i + 1)$ ]% D; s0 V7 P! t
]
; J. F0 t* }  \) x" A% A6 B7 G. G6 Tlet k 0
2 ^8 d, x4 l) g- u5 ]; Klet new1 00 I4 I# f* }  N; Q5 h; \% F! u- L
while [k < people]2 g# R/ J* q: y# q* y
[
3 @6 B: X/ S0 E: xset 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)
2 }, Q! C- {$ }: q" b  F( Kset k (k + 1), s# V; m5 S; u& c/ G2 ?. e, w% j
]+ Y5 F& i; T. ^; m# o- F6 ?' }5 P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* ~* y+ o6 K" s; M' A4 h- eset global-reputation-list (replace-item j global-reputation-list new)0 E6 e  I5 U( X5 q, D* ^, A
set j (j + 1)7 P6 m; [& y+ e7 m5 L, x
]( F) N* c6 r. W2 h
end  Z0 H0 ?" A- W$ X# {! ~* ~

( t* i4 i+ e9 W, X: k& _
7 M5 c! m/ I# h
9 V& r3 ~& |: ~( e7 e1 U$ v# G# \to get-color# g. [; P; z- S# x
  h" D# ]( X6 @$ G  u- C
set color blue

" S$ h% I% i& I$ `9 I/ j+ w) Qend6 c: p3 }5 j9 c8 f9 w( n: F
1 c$ @4 L; a) R- s; R# @
to poll-class# l( g* L8 [: S& O0 y
end5 g: k0 m, K! `4 l& M
1 r; G4 E6 I2 x1 d( E! a- [( ?
to setup-plot1
& }. b9 ?0 N* ?+ \
& C! {" K9 R+ [set-current-plot "Trends-of-Local-reputation"

: K+ g5 `4 c$ l1 Y  P/ s
4 x3 C4 }, y( \# V* @( Z$ mset-plot-x-range 0 xmax
  V, W6 y" {# G, S# Z2 D+ a

3 b' a7 s! c4 L# l* ~2 Cset-plot-y-range 0.0 ymax

  Q: C) j) n0 H, m  ^$ Send
1 |% ]; f* k( `$ h, l) E& n9 Q
1 y9 k$ ^+ N$ O8 p" @. @, Ito setup-plot23 x9 @* u" y0 g3 A

% k9 ~1 M' T  U/ [set-current-plot "Trends-of-global-reputation"

8 Y+ p3 _# l/ Q" }  A
, d( M8 ?& h0 ?6 k+ S# A  |set-plot-x-range 0 xmax
8 d8 h/ v6 J8 k& _( v; I0 C
5 g: _3 N* B0 @4 ?/ J, K
set-plot-y-range 0.0 ymax
. n& b- ?) a& f8 b# C7 n
end
. T7 e* G) k6 I2 x, L0 |+ q% p  D$ G, J% C
to setup-plot3
0 z" ]; V. W3 n2 ?1 B/ Q3 v, N# b  X7 p. g
set-current-plot "Trends-of-credibility"

" {# M' |" k% @) Y) i: r! l# I; t& _  E+ C4 R0 [, O
set-plot-x-range 0 xmax
, V, X+ P4 I; ~6 H
1 O7 {. K$ C' V9 t# F4 v* m' s% R1 ^
set-plot-y-range 0.0 ymax
# Z8 l  h/ D: H: {
end. R$ r* S! v; C% n! v9 \# F
) _; o( P2 e1 `4 ]6 ~; x% n+ U+ Q
to do-plots
" k) z( X. I2 Wset-current-plot "Trends-of-Local-reputation"" y  a# h# n5 X; w6 Q8 j
set-current-plot-pen "Honest service"
( o7 v# e6 ]$ L( \3 qend
. l" o9 x& ?7 x$ G% m+ a. z. `. @5 o$ j# b% l: q- L
[ 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.
/ s# N3 O; E* o0 P" U' B& J8 S; E% U) _+ S0 X5 L/ E* ^9 s
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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