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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:! s8 X, c  `7 |5 t
to do-business ! q$ _% V+ \$ {( J4 H6 M4 t
rt random 360
, z- ^$ b  D. d+ I) d2 C" e. w8 n fd 1& L; q0 {, p0 x$ l+ w2 ^5 o% b- V
ifelse(other turtles-here != nobody)[: M: k8 l4 D% m5 Q1 X
   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./ Q. R2 w7 `5 ~0 ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ c. N% P( M  i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& R" P5 k) i: t6 u+ v& }( o& Q4 @   set [trade-record-one-len] of self length [trade-record-one] of self
2 z% a( X9 b& r! J0 ~   set trade-record-current( list (timer) (random money-upper-limit))
8 l9 t" s6 k5 ^$ ~) w
; U4 y" G6 ]. F+ y7 W问题的提示如下:( {' `# J2 Q- x* y6 A  B4 Y7 n
2 x  q9 h8 u- A8 S
error while turtle 50 running OF in procedure DO-BUSINESS
! f6 b4 H( R+ x" E4 [7 \  called by procedure GO
: N$ h) |) F  E) X* E9 yOF expected input to be a turtle agentset or turtle but got NOBODY instead.
% P9 x8 [7 G0 d* R
(halted running of go)
1 q7 Q( _; t7 w; M' z, E; t/ _5 P+ A: I! _
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 j9 F0 H+ P, ?/ F& K: [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
5 J/ ^) Z4 N, E4 y- V! d- Q8 [globals[
* K/ P, g' ^1 H5 nxmax
9 l. R, A0 M3 Mymax$ `2 q+ z& ?2 Q0 r
global-reputation-list
* Z# M& x6 I# f/ w& k3 _# x+ D3 L& f1 K+ @
;;
每一个turtle的全局声誉都存在此LIST) l( K: O; b/ V) `+ e) ^  B' f. [
credibility-list2 F2 }3 V4 V& k' i+ z
;;
每一个turtle的评价可信度2 g: c! E( A0 ^3 F* g  H# \/ V
honest-service
  l  s* u, X2 H- A# v  kunhonest-service
' c- P. P4 X( p% Toscillation
5 ?: s; `4 V! U9 R: ]rand-dynamic
( X4 y: ~* C7 x( T]
6 u: f2 n( q) s9 \  V
0 E) X) C3 q1 @+ Qturtles-own[6 D. A& g1 \6 j0 r! V5 e7 x! ]
trade-record-all- H* f) Q% a& k' c9 m
;;a list of lists,
trade-record-one组成
5 y4 ?, Y1 S$ ]3 R6 _trade-record-one
& C6 A/ Z" o% a; I;;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 |3 |1 H2 i/ Q) M4 i
" P6 Z0 V! s* l  ~5 \. M! y$ x9 Y. 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]]
$ k( c  ?+ w: }$ d# u6 X# v2 mtrade-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! d: r3 k* r: m
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
* ~  `6 _8 |! f* A- {neighbor-total+ ~7 x1 X& P6 o" I+ R
;;
记录该turtle的邻居节点的数目
9 }& k- }3 H5 K7 }) Rtrade-time
* c" B& q# K. [! }! d+ |3 {;;
当前发生交易的turtle的交易时间
- E4 j  Y7 A# H; }7 H0 iappraise-give$ D! I0 N1 d; u7 v# @- L
;;
当前发生交易时给出的评价
0 z  G' H# W  ^* K3 jappraise-receive: G5 e$ ~( K8 q! n
;;
当前发生交易时收到的评价
" b9 s7 S, O- k2 R; Uappraise-time
! f; n. P' A+ P4 U' Y2 I9 [;;
当前发生交易时的评价时间% M( u# E$ a* ~
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 a" e0 f9 q8 ?/ \$ [1 S( t. ttrade-times-total
$ M9 |( ~; F. D8 H; k1 E;;
与当前turtle的交易总次数# P; T! i+ I3 v0 x
trade-money-total2 E0 T) y* ?1 E4 h  f
;;
与当前turtle的交易总金额- @' d0 K% C& Z. ?3 a0 U
local-reputation! `  G: y: c: s% m) A
global-reputation
, m6 g0 C- K* W2 {7 Ocredibility/ v( h& A; Q3 Y! f% K  Q9 C
;;
评价可信度,每次交易后都需要更新( }2 }' I+ `. o
credibility-all" z8 R$ l8 o7 |, I4 F
;;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
! B, l# R9 H% D, y* P. r1 J+ N
0 Q" |8 d8 K0 [% d3 M( R1 f;;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0.51 X% K: ?* V7 F$ y# H6 b0 @
credibility-one) \5 A1 Q' f1 X9 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
" M) D) o* [) `7 X, [& tglobal-proportion
$ A# g8 }7 n8 m; {: Qcustomer
9 E7 {" W( p# i! g/ Fcustomer-no7 T8 W7 {( X% h. `, C
trust-ok5 I9 O, Y9 u. [9 l# j) w* Y& u
trade-record-one-len;;trade-record-one的长度
) F, s5 i. q% }) ~]
8 ~/ t+ }) ]! d* }( U( f- t
9 D( ^( l: T% r0 P;;setup procedure
& ?1 Q' N3 c" x- v! k! E, b6 _
) m" B# a, B9 x$ s$ s' wto setup
# I) |& u+ a) m5 `0 i0 K& B$ ]5 u& a3 T5 e) Q! r, k
ca

* L! p& M: }4 d3 }  p$ @) d, _9 m, k  a7 i6 ]
initialize-settings

& [; Z6 _+ B$ o$ t7 ~9 g' Y) h( E  M  }+ U
crt people [setup-turtles]

2 S1 I6 }0 P1 R( k+ Y
- R' j/ b8 \2 l  X; Nreset-timer

  X' X1 h2 x( S+ W3 M* a0 _" o+ `; [& z" K) D+ t" {) N
poll-class

; t% u' |' ]+ I; F( z6 H9 @3 ~4 j. q0 D- X
setup-plots
# D" O! |* T5 a! W9 ?
# M0 T# |- L3 a- _+ w8 D# I4 n
do-plots

$ s" M7 M: A* Y7 D: a! P. _end
( c8 O  a( n$ |) z8 ]3 v6 P4 M1 ^1 y7 ~- x
to initialize-settings) ~- l5 T% d) K& q# M

4 c- o  s8 Z$ B. O) K3 wset global-reputation-list []
# v9 V7 t( w6 I4 |# {8 c& M

' h% l$ i9 n$ o, Z# ^/ Dset credibility-list n-values people [0.5]
; ?: i) A) E2 P/ g: N4 k% U
9 N. {$ L: L7 W9 V" F
set honest-service 0
, q6 o2 J/ V4 ~) R8 j2 `1 r
: o: l  K6 h0 \' k9 X
set unhonest-service 0
# K+ w) o  I7 }' i, O% K
6 O3 n" ]7 `8 H6 w4 g( U
set oscillation 0

( p9 ~  z& c2 \9 N- k0 h3 {$ e8 d; E  S) y
set rand-dynamic 0

  Q+ y" D: h3 w6 ~& R4 W( b; I1 [9 Oend
+ t( t" R% |- o# b. i$ n0 i1 P+ g; e% ~" w' j3 B) h) H  W
to setup-turtles * C. m% G+ w6 l; U* z
set shape "person"
* {+ F' u( y1 K, A5 q5 \" r$ bsetxy random-xcor random-ycor
  P% Y4 i5 i% ?. ^8 wset trade-record-one []8 X, n5 V% N+ z, [4 z* U8 l

  {+ p- G2 C( x& mset trade-record-all n-values people [(list (? + 1) 0 0)]
4 @( `& ?7 Z# ~7 ~8 L2 L! Q

1 s1 l: h: d" r5 X( a: q/ i- [set trade-record-current []5 }  Z; V$ W7 r1 |3 G0 D* `
set credibility-receive []
( I2 a# o/ t6 I! u1 f4 Yset local-reputation 0.5. {6 D+ k- w9 S8 S2 b
set neighbor-total 0
1 }$ b3 J6 ^; {! W) ]set trade-times-total 0; `& e! W6 e/ u6 A! s+ B, f( Q# J
set trade-money-total 0
6 |. K- j$ i9 r5 M6 I1 K- zset customer nobody
& u) e& `  y/ Z. N" _* k# s: iset credibility-all n-values people [creat-credibility], I; W; X) V4 R1 m* D( D% U1 ?
set credibility n-values people [-1]6 V( ~1 ]2 {  U) k9 ~* i; y
get-color
* _& g; \' Q! C, y3 Y4 j8 N
% w, }" `. R/ u/ e
end
9 Z" f# Z+ y9 U; w2 `8 |  D) E& O; |4 s& a2 o3 a3 L( ^; Z
to-report creat-credibility& Z: C/ i- o6 h. j& A% A. J
report n-values people [0.5]  N" r/ `( w; Y, Y4 h4 W
end; L( Z% q6 s9 ]9 X

( @- x( t, Y9 q' I' }0 D$ Sto setup-plots
5 H2 \! ~4 n9 y1 [0 }, u4 B7 f: q& o7 g7 Y
set xmax 30

2 d* x* S# f$ d$ p: S6 Q" Q9 u  H  \1 C
0 w1 k) v* N) E3 g7 sset ymax 1.0
/ v1 r8 b* T9 a
7 c9 u/ c5 f, n: x
clear-all-plots

; q0 t0 G) {0 i; n/ @. ?: w& V/ ]- ^9 ^" @8 ~. L2 s8 h
setup-plot1
  N2 v9 H9 Q7 k0 G6 P0 ^7 \

) J  L7 K5 P" E. \/ X+ Zsetup-plot2

2 }7 n( }2 X" v# o" {; U6 m) C* i8 V0 @4 I5 i6 h4 m' r
setup-plot3
3 J$ g7 u9 t) v' i7 |3 L. H
end
/ Z$ U/ o/ ~3 @; Y0 d' s6 A5 C* M% q, v/ A, v! C, K
;;run time procedures) J6 Q4 \$ P( U3 ~

! a  a- w) F5 H, k/ Bto go
& X2 \2 W- y, w: ~1 r- \8 t2 ~8 v" h( x
ask turtles [do-business]

6 U- W9 ?, w  ^end
$ s) A7 @3 ]6 A2 c
  N2 u& d8 t3 [+ Vto do-business
! ]! x8 U- ~  C$ Y% M
6 x* ?8 K& g1 T  q5 E6 O* X

  e8 T) C4 r8 `rt random 360
6 \& J+ g, A3 K  S( u% Q
' R+ ^6 \6 a! X3 j6 s
fd 1
8 E) x# [) n* w& _1 M
5 ^' l: W- I% n5 R. `+ l
ifelse(other turtles-here != nobody)[

8 }6 `! u! `' k3 L" a+ b1 x& R
. o! z$ e7 V  T4 Xset customer one-of other turtles-here

* y5 I9 `2 M7 F8 b# G+ g
: o9 ^! U, N( z0 {7 K;; set [customer] of customer myself

$ m( z$ _& a+ ^1 @7 u, j$ o) w) d: l5 p0 b0 M- ~4 }
set [trade-record-one] of self item (([who] of customer) - 1)- a* v2 ]* h5 |/ J* z
[trade-record-all]of self' U& M4 e# i! ^' I& y; H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ U: o2 r! C/ w+ v' K8 ^3 M1 }* j: Z" H
set [trade-record-one] of customer item (([who] of self) - 1)6 \6 y! R+ Z6 w
[trade-record-all]of customer

+ T/ P7 Y. s1 d( H- j# @0 h$ ?, s6 H0 q; G6 i9 A9 v* R
set [trade-record-one-len] of self length [trade-record-one] of self

6 Y4 p2 H' y4 b" O$ F" Q6 K: ?5 t6 Q+ \
set trade-record-current( list (timer) (random money-upper-limit))

* ?- G5 D2 M5 [  k5 E
4 v% c% A; M1 x2 D& V2 C( Uask self [do-trust]
# {: \$ A7 e6 _* u! {+ o  }% b;;
先求ij的信任度
$ U8 S% C; h% R9 p& z3 I+ L3 J( h* @% D- `
if ([trust-ok] of self)9 y8 V+ F# [2 A' ^% @3 J5 ^
;;
根据ij的信任度来决定是否与j进行交易[
9 s! `6 S9 T3 Z9 p9 W9 _ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  E' t4 A6 [2 i: q

& F' b7 s  O" T5 s+ O[
/ U8 ^$ x$ |! h% m! O6 A( B
) _; X+ w" x8 |9 C
do-trade

6 q# A3 r. `, q, [" D
+ `9 m( O: o: S. Oupdate-credibility-ijl

; G0 L4 D5 d( C5 e7 l7 @5 x0 @6 X3 R  O; P
update-credibility-list
, i5 P( N8 k* u8 l
. |: V; o+ h1 D' Z( a+ w2 z$ j: I" s3 Z

; f; {3 F# }5 |% @9 d' Q' Nupdate-global-reputation-list
3 `1 \! w- c& Q. D5 ?
, M3 C1 W2 ]% d- z! S; y+ o5 C
poll-class
7 V/ q9 @" o" a

) [: i; X1 A! i) {5 p5 \9 bget-color
, ~0 h. }+ X* m4 q! J! u) ^
6 n. H% I/ }3 z4 B: z# o0 j$ y) h
]]
( ?, [, k% Y6 k* |- V0 e, {, e( j( b" ^0 A9 f# L
;;
如果所得的信任度满足条件,则进行交易
+ P5 g# p8 g8 q6 W7 X" q& G6 h4 D* Q& P- c
[
) p1 r2 m7 D4 n$ z$ M( N$ O6 w

6 Z* D4 C% `, `6 C( E4 U) X% k# ~$ urt random 360
7 ?: E" K7 N% `+ `, ?3 D. Y- w3 D
2 g& r/ O3 Z! H% ^' D1 i3 a
fd 1

* d+ J* z/ C8 w$ H! P1 Q
' B5 k( ?6 o3 f1 L6 v4 p]

. ^7 H3 }, _* r8 T3 h7 W  `1 z' T9 ]- l9 S6 U2 s: Z
end

1 i  G" A* Q+ V6 |, h9 C0 s* A4 n+ M5 y. G8 }
to do-trust 8 j* P1 q0 C' w4 e$ V
set trust-ok False, {" k; }: z! H/ w

, }5 T( B8 a  {/ x6 G- s
$ Z; J9 L+ B! y1 f
let max-trade-times 0
5 g! e4 m. h0 K- u. S* Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ f$ o7 @' f; W) h) j2 \let max-trade-money 0/ u. [2 I  ]9 Q/ E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], O- c" [" `: A
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 G5 W, d/ ~3 s. I2 [% S7 \5 _9 R( B5 Z

' d) |, c7 s  o& P6 r' g# @% K+ @  Hget-global-proportion
( v' O/ k# L: Z2 v- j" S. h, |/ mlet trust-value( _) F* {! s$ r. m* F) u' R
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( ?& n$ A3 ?/ O; J) ~8 j( I5 H# Oif(trust-value > trade-trust-value)8 v% K# N5 `5 `5 f( m
[set trust-ok true]
. p* D& v' j" f# }6 v/ w% fend
* Q2 k7 o' c# r7 q1 Z. S% m* U
; Z! n4 O$ E$ p" j9 Nto get-global-proportion1 S4 P2 o5 L* \# b) ^# G
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% Y; s1 T, j8 V) I[set global-proportion 0]
# h- r. k- K# x  V& U' ]3 N[let i 0$ Y+ G: A6 {  L' P
let sum-money 0
8 R# i) E) l& B. u7 _* `8 B' P  h* }while[ i < people]
) e" r9 L, v% B& `& N" Y$ w  F[
8 ~/ G+ O9 C7 a: ]if( length (item i5 }5 U8 V1 c2 M" l8 r
[trade-record-all] of customer) > 3 )

, k2 G0 Q' [% t( u' g. G* c5 {9 h[* p1 E1 [/ z# A) b+ b/ y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% j; ]: B; Z% V1 W. y8 e]
% ?% r6 h" w, k]
/ S( x% o$ D% {. |0 n. ulet j 0
1 K! v7 h( i/ X+ K, S( O4 ]& Xlet note 0
/ |3 j3 S, l$ G6 M! f' bwhile[ j < people]5 {* s' h( ]/ H; a0 D
[9 d* f/ u8 A  x  _( O- f: g6 f
if( length (item i
  e; o3 ]4 P; u% F[trade-record-all] of customer) > 3 )

! M- T( a6 M9 @9 t[
/ N$ T; t" |7 P* M7 J; Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 D( {. d3 Q  p7 h1 ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' k5 D% V$ [, j; s! w0 T0 x7 T: |$ ^[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], W5 c( i1 T- v! O
]% {- w7 _- O; E7 x1 ^: E
]
8 d$ P5 G/ X( @' C4 d8 tset global-proportion note! T6 G) r8 e& K7 R% j
]
! W9 Q6 U* W" zend
8 |0 Z* [9 u' i" Z# z
5 u! a1 T/ M0 j3 c$ m; kto do-trade
+ t# _& ]4 @% \+ O! m;;
这个过程实际上是给双方作出评价的过程! _2 y  S4 c  x" F5 N% T% ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 `& Q% a" k# ?+ R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 o& Y- Q) S$ ]; n) `, K. c% zset trade-record-current lput(timer) trade-record-current. \! r' o# F0 R; V2 Y& O
;;
评价时间! F; F1 L$ T7 S" _1 ~
ask myself [
" P4 Y. b2 B" M+ P6 Wupdate-local-reputation
( h+ D% A8 G4 {4 jset trade-record-current lput([local-reputation] of myself) trade-record-current+ O7 B3 Z  k0 f, s* \& J" P
]
; H0 {% |# L" n$ G$ Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- ]. @& h) B5 L# M8 C9 f;;
将此次交易的记录加入到trade-record-one9 `/ n; ?. S7 I0 i4 d+ t5 P& h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), p/ Q% p# G0 ]* {  ~6 g
let note (item 2 trade-record-current )) O' Q4 ]( Q- F
set trade-record-current) J1 n+ V' e' f' g) _
(replace-item 2 trade-record-current (item 3 trade-record-current))

; {4 c! ~8 |/ a& r! ?8 G- iset trade-record-current* j% w7 y* \  D; s+ j
(replace-item 3 trade-record-current note)
" |/ u: G# O2 M; g( t5 [) v2 |; K" R+ {

2 E. z$ u% f& V" \, [& h6 Gask customer [: Z' E8 l+ T  Z3 o
update-local-reputation
) ?3 B$ M; t3 ]% b/ _( J# ?set trade-record-current# k: ^6 g4 l% D/ E/ X, ^1 y) }: Y2 [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# T6 I+ f/ e3 J' N- g* i6 R]
* G! C3 {7 J9 I, n! F
# O4 F- n+ w( F; @  G3 `
5 X( ~6 r+ _) V$ V, Q/ Z( s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; G/ G: t3 Y1 X
0 i4 ~2 x5 [9 \# \; {  f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ P: z3 A  _+ n7 t- y; ~
;;
将此次交易的记录加入到customertrade-record-all
1 x4 E5 U1 u& D2 N: ]; Xend" f3 L4 {; R6 V% g  a

/ ^9 K5 K, A, @6 Uto update-local-reputation+ ]. \9 V% r7 e/ }. D8 y' F
set [trade-record-one-len] of myself length [trade-record-one] of myself% }" M* F* i! v# S( P7 g

1 t8 {7 {6 O! q, X0 |) [% d9 i- X6 y' x3 O1 T
;;if [trade-record-one-len] of myself > 3
$ [% m" ^2 q& ~5 [
update-neighbor-total  j# F  U0 {4 X4 l8 m$ p9 H( E
;;
更新邻居节点的数目,在此进行
1 J3 K& o. g3 K/ Tlet i 3& W1 o' ?. @) W, F
let sum-time 03 ?) F" J0 o2 w5 f9 i6 l' s, |
while[i < [trade-record-one-len] of myself]
- C: }% J4 h1 J' y[
* S6 ?2 l, z2 x. V5 B! {& r8 K7 Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! [* R5 _3 i( U" B$ I
set i
- d7 n# K! j' S! G" b  k0 e* a3 O( i + 1)
$ r& M. Z& C* x0 [, D, r' D
], ?" E0 D, g6 n; ^# c$ |# @
let j 3
; o5 S, o+ \2 Y7 ^let sum-money 0; S4 Z! ^8 a& K* C/ ?, R# B
while[j < [trade-record-one-len] of myself]
" V, I0 A/ I# l+ Q- ][
# F5 R' w$ i( n8 Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. t7 V; G6 }' X9 D0 bset j
% R3 _$ L# r& t7 A0 A( j + 1)
! k( m) X% k$ Y6 G0 d) E* V
]6 R+ L' B6 F7 ^7 F# _0 a5 Z
let k 3, E1 p& `% c5 X1 Y3 j' P
let power 08 X6 K+ f: q5 y5 c- Q$ K1 g0 `& j
let local 0- N  e8 w/ S! f2 s6 n$ d
while [k <[trade-record-one-len] of myself]
7 V* k4 f# }2 z0 ^# Q1 T[0 k/ }6 ?: ^" {2 \. Q" J
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) 5 z: Q* I1 M* b& K; a) K  `
set k (k + 1)5 w3 ]7 G; w- B. X" B0 |0 N
]" a/ A7 L' O  P/ \4 h
set [local-reputation] of myself (local)' ^' a; M8 `6 {( P, p" `% J
end
& `5 h' ^5 A$ V7 ~9 [$ Y/ n) {- I7 _0 q8 w( o+ M. ?
to update-neighbor-total
% v  }8 d  r. g! ^, p9 s2 s8 N/ f- B1 T' I% ]% s1 k4 v
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# ]# e9 w8 A" P0 }

- B4 \% H6 `- Y2 ~; R

. W7 a: c" u0 {4 send
" Y# }6 e0 b3 r
3 m! R; i6 _# ^/ C6 Gto update-credibility-ijl % p9 A5 U1 x# q" ^

3 b- }+ l2 i, Z* N% 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。
- W* W" e( d! I( l+ F* I/ zlet l 04 I0 ?; v, o. d' V
while[ l < people ]
5 N- S3 V" ?4 o( r; z2 `;;
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
/ q; z/ v# k( d[
  Y; O) V4 w3 c: u, \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 k  p$ i; D7 U3 s$ V, @if (trade-record-one-j-l-len > 3)$ O( F, D" b; T4 M0 n+ M9 v( D
[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% A9 ]5 {2 z% P1 e
let i 3
' T2 @) B. [) M2 Q( X; p* Plet sum-time 0; S# B. n& Y& h* S6 e3 D
while[i < trade-record-one-len]; _2 }7 u/ C5 h3 n% P( x" M8 n
[
! I3 j( S: q% p: K! @3 {! y, Rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* Y8 W. I7 @7 R  i: ?' n/ ~7 |# bset i7 h, q: |. T" A% N$ O9 X; c7 T# R
( i + 1)

' ]9 }% y- O5 ~1 N% X]! p+ s, W9 a6 ~
let credibility-i-j-l 0. h* M9 B7 J; M- v& P! d  \" C
;;i
评价(jjl的评价)$ F$ e4 T6 ?' \& E4 K* U; p  v
let j 36 Z/ e: r" r9 r5 E* ^2 R/ }$ Y
let k 4/ t2 f# T' j* G$ n. ^: S
while[j < trade-record-one-len]
- b* V# [& i* `/ D' B, p4 P) ]3 J# _[2 m+ J6 B# m) G5 a$ @, s; S0 \1 w
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( [( p5 F; O2 ^# R2 k2 g
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)2 v7 z( a% M) a* I1 _) D
set j
8 p( i% k% L* Q( j + 1)

1 k5 b7 I& q  X9 ~8 X, ~2 X]
  [; |, q6 }4 a( ^$ g& Kset [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 ))
, V: |. P! G5 F" z
+ g; G) e  B( X3 ?( v( }
- f0 h4 M/ l( j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" q/ r/ G6 C  i1 ^1 ~
;;
及时更新il的评价质量的评价3 a5 R) n1 j9 G. u5 r! h: V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 L  X+ t& v4 _
set l (l + 1)3 V# t0 |$ H/ Q( A
]
1 ~1 S$ O1 ]4 O* p. v$ {3 pend
) c* M9 y0 w' A6 `1 V0 U
; _- X* l+ z- I8 O! Vto update-credibility-list" M6 q3 H" |) V2 `3 g
let i 0& d& U3 K) W8 \2 `/ b% \7 _( m
while[i < people]
! `* s7 `2 h3 x# h. h# M% H0 c[
6 J' ?4 A- i. y5 w) F, m9 e$ F9 }let j 0
9 g! s% N6 |. ?7 a6 S. elet note 0  X5 U2 G& j1 \" q5 ~
let k 0
$ i3 ?. G$ A0 B; Z0 x0 Y;;
计作出过评价的邻居节点的数目! @) Q# O5 m# n, H( o$ _' h
while[j < people]9 k, L* y# o( y( c4 Z& ?. d
[: s( ?: Z: i. P9 x9 P
if (item j( [credibility] of turtle (i + 1)) != -1)2 U$ R7 F: _, J, ^2 {# X+ S$ q; P
;;
判断是否给本turtle的评价质量做出过评价的节点' k: Q' r1 h7 ^' d* X" V0 `
[set note (note + item j ([credibility]of turtle (i + 1)))
) i" D; e  o8 ];;*(exp (-(people - 2)))/(people - 2))]
1 b# e: M7 e4 E! G3 d! f
set k (k + 1)
4 f$ l7 A7 a& P" Q]
7 w5 U. {: A! R, Lset j (j + 1)
0 A2 T- ~: @% @8 l]
8 i% O% g0 m8 hset note (note *(exp (- (1 / k)))/ k)4 S& C8 p* s8 \) R0 n
set credibility-list (replace-item i credibility-list note)+ [2 [, v# R: |/ Z7 n
set i (i + 1)6 Q2 [1 {" j4 z/ I6 M
]7 `! |1 w) o3 l( d
end1 T0 b8 X; S! p- s/ E- d

9 x5 D! q1 h2 pto update-global-reputation-list1 k* B2 t4 ^, b" b. N8 G
let j 06 e% S) `& N; L( z: |! X
while[j < people]2 r( H  }3 G; L- N0 A# T# A
[3 U7 q- x/ v% U
let new 0
4 Q8 s1 O/ G8 Q# P# o9 j4 q  K;;
暂存新的一个全局声誉
: M( {6 k  C; x+ O6 c/ \' Vlet i 0) O! @1 G* D% O- S' w6 ?  e& G
let sum-money 0
) ?3 V" [8 F9 d1 q2 `% X( ]let credibility-money 0
  u" {) h/ i& L! qwhile [i < people]
4 X0 m" {2 e7 N' B3 ~[
) v" Y. O" _/ h' i. |% W* Y" @$ aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ {& Z  w* l! B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 H* [  [1 Z( a7 B+ iset i (i + 1)! s: H5 P' Q' C3 ]; q
]
7 q$ J. ]& t3 Z5 y/ R! E7 rlet k 0
2 `" C8 j1 k2 _1 llet new1 0
7 h2 @0 i% b  I# K! f. ^- Owhile [k < people]7 D  Z' N1 d  A- H3 r$ f
[  ?; Y) S# h1 c' @" D% [
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)! H) K: J# k4 V  ]: w$ j
set k (k + 1)# R  F/ H; X1 I$ h6 ~! C; j  R+ z: r
]
0 r$ Q8 G, @. C: J1 k- uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 V7 {4 Y; Y" X6 e5 q8 `+ {set global-reputation-list (replace-item j global-reputation-list new)0 K+ J* w6 Y: p& B7 Z" y- b* u
set j (j + 1)
5 }' s( ~' }; T; j# W]# U+ q+ g8 R- ^: X+ b. P' z) n. k
end; j4 I) M+ J  u. \5 v' u! d& ]$ ?

5 G  B" t' K, g" C" L, r4 d2 G- O) S7 `8 N

! G7 y, |1 n5 {6 r# xto get-color
8 W, d0 _% k8 f& P1 d$ {1 R' f2 q% T
set color blue

# {+ k* o, G2 h/ R$ m7 uend
2 n- D. I  v) X. G
& N6 ?1 r7 x8 e' \0 V& \# k5 Mto poll-class
( o  }1 G6 B4 S. |9 C4 Cend
' {/ B- B5 d& t, f' d3 A
  t# F1 T3 U' k2 t% c+ u+ eto setup-plot1: q2 r3 _. K$ c+ [% d- z2 w8 H, X% J
$ Q9 ?5 G, G1 N# ~7 F
set-current-plot "Trends-of-Local-reputation"

( H  d8 Z0 }* h% f. z( R6 g2 N+ C* H  c6 e
set-plot-x-range 0 xmax

' j1 L# B- I: j2 v) M  g3 G# d7 u1 a/ w& ^- P
set-plot-y-range 0.0 ymax

* ^5 j1 _, n2 A0 l- `2 k3 n2 Lend$ G+ |5 c# O7 A# R& `# n8 N

7 y3 O- ?3 u: {. V6 l4 Dto setup-plot2
  K* v. m, z2 {) d) w- N% M
2 w( H3 ^3 D) W" N6 wset-current-plot "Trends-of-global-reputation"
; t! k) _! [6 \( v( \

5 f; s. _+ N% `3 w1 K3 p" eset-plot-x-range 0 xmax

7 D7 m  Q, Y7 L9 J% e. d
9 H( q  m5 c9 `& N! z. U) z/ yset-plot-y-range 0.0 ymax

" N* F- X: K; j1 Mend0 H# L3 X% ]$ ^$ H2 Y( \  \; p8 u9 b

$ m/ m5 |4 k7 I6 t; V% l+ Dto setup-plot3
' U" @' d/ J, j1 r7 Z7 h; n; O1 C# D9 y6 W
set-current-plot "Trends-of-credibility"

  {0 V' Z9 m# g! `6 ]
3 Z; Y+ I3 z- m% `; ]# R) d  pset-plot-x-range 0 xmax

) h% b$ P5 l9 p6 u1 y/ A: @$ F3 b  A" j- U4 }
set-plot-y-range 0.0 ymax
# a! _2 \3 a9 r: t5 V  G8 F
end: F; S2 m& n( f# h+ C# w* K- |

6 H1 Q0 w, b0 A& Cto do-plots4 s' ~( m7 G. Q. ?: {% J1 z  @
set-current-plot "Trends-of-Local-reputation"
, @, A" s  V, n- Jset-current-plot-pen "Honest service"
1 |* H0 @* @* Y" s) J, i* g2 @end
  A% s* }* m. Q% g
( ]9 E$ V- t+ @) m) @# s$ ~2 g9 w( Q3 Y[ 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.
. Q7 n* f6 b' P7 p7 r- Q, e6 |: B
& O( L! {% C4 e9 ~& b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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