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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:
% C# s* v; D# L  |8 Sto do-business ; K4 |, H6 p0 U3 U$ J* `5 T
rt random 360
0 ], m9 D6 T! c9 R fd 1
4 q) d8 a$ O) v% |& A ifelse(other turtles-here != nobody)[: P$ R- s) R' e4 G7 J
   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.
) X7 w) u7 [( U. j+ [+ I   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & a. o3 [  k& x6 `9 m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 _8 R7 x$ x" _  f   set [trade-record-one-len] of self length [trade-record-one] of self
; Z1 j& s2 G" U, o, v  u   set trade-record-current( list (timer) (random money-upper-limit))
1 e7 z  _1 D- o- Z1 X& i/ K5 v* Y1 `* J9 Q7 y
问题的提示如下:
" I' S% v: H+ C0 l) u: i
6 v; M& h; c; o5 G6 kerror while turtle 50 running OF in procedure DO-BUSINESS
1 N+ F# C0 [' e  called by procedure GO  Z+ {+ ?$ O6 d. K* r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* m3 f9 z5 U7 a0 ]2 g
(halted running of go)
( Q+ B! H- k+ E' R! K' G' g2 r" @& X' ]. h: 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~~
: d: _* {# ~0 \/ m5 V+ K- G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
# V+ n+ _& {( q1 Y" b6 q: U1 W: A5 tglobals[
- i( B' \9 Y' r; G  gxmax0 O5 B9 l/ A% h1 K* k
ymax
& E# T' \! H5 H) f: Lglobal-reputation-list
+ A+ J0 @! M# ]) Z7 y( K. v- u/ O" G  u# P- j$ Q+ k$ }
;;
每一个turtle的全局声誉都存在此LIST
2 a0 E+ K6 ?( @, t, k1 F, ocredibility-list
0 k6 x" O- \% L! w: J- m2 P;;
每一个turtle的评价可信度
3 L' m) q8 u9 |; q0 Thonest-service
( j# S9 r) \) q) ~) z7 p1 Wunhonest-service8 L% {: N7 P8 a0 k6 D/ f& B. ~# W
oscillation- z* I: o* m: Q0 M5 l6 i
rand-dynamic8 z* B/ e; A7 I8 l6 |
]
" G- D9 Q* T6 j; y! P# P- ]& f9 _4 U7 N
turtles-own[
0 C% E) U/ g1 U: itrade-record-all
# _  ?1 a- b) v: o# l;;a list of lists,
trade-record-one组成! _% z. v9 [* \/ K. q) w  b
trade-record-one7 E3 H: c  ]# g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. ?  k9 @0 f/ ?1 c, N
2 }3 k# W; ~) {  L2 V;;[
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]]  q: h' @1 M: W  ?
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]0 j  p8 j7 f5 F
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
7 I6 D+ _, v/ |% ^/ Sneighbor-total
3 \9 [: r2 G' K5 U* V' s;;
记录该turtle的邻居节点的数目
& k7 K3 ?, Z$ ^7 ~, ~trade-time) `1 ~3 r1 h& }' Z4 z) c5 |) s& A
;;
当前发生交易的turtle的交易时间; u* m8 ^9 a. w5 A
appraise-give# p- Q9 q; J- g3 l# @
;;
当前发生交易时给出的评价
, w) n4 s- r8 x0 S9 {1 happraise-receive
+ R. }* p8 _# ?4 v8 Q& {% x;;
当前发生交易时收到的评价
$ D" ?1 c6 o7 m/ q1 ?: w! dappraise-time% t  x( x% h; F/ E4 ~. r
;;
当前发生交易时的评价时间3 r# H" u2 M1 t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 S) ]* p0 x% \1 B9 h8 J& B
trade-times-total
* @! |8 `" v1 w;;
与当前turtle的交易总次数
4 p" ~0 O' l  k; mtrade-money-total3 |2 u# O- p  D6 J, B6 i
;;
与当前turtle的交易总金额
/ B3 x! D" ^6 r) `2 blocal-reputation
8 U0 R0 c9 T" {% a/ z7 mglobal-reputation- s6 O. f) W0 s* m9 U4 C7 @
credibility% b8 r& U  [  r6 S- Z
;;
评价可信度,每次交易后都需要更新
+ X  P' |& o9 s' y/ z3 p, {credibility-all
' n7 M- `; ?0 b# t; K3 N/ s3 a: m;;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
, W7 I3 ]! n, Q4 V# q  c0 R! ^+ W1 L: S  X# H2 u0 q7 c
;;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
0 y3 G3 b4 E0 y" G2 V/ G9 x3 _credibility-one
3 N) B7 I4 E  P2 y- z0 P$ @;;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( K7 \/ Q+ V9 r! l$ {
global-proportion$ k+ u* m9 E* J7 W; {- D
customer
; ~+ z4 G; C5 o4 E- Zcustomer-no3 ~8 l- G# B  C9 `
trust-ok+ n, \# w. _4 C& E) y
trade-record-one-len;;trade-record-one的长度
, _3 o: T! v9 P1 {# I* }, q2 K]
6 Y; w1 N1 z/ T1 H5 U
( P( T* B$ L9 P; P' G. x7 H9 a8 E7 A;;setup procedure+ [, Z5 q% [6 Y

* _1 c# ^8 l5 C/ r4 n$ H' k1 bto setup
1 T9 B: i$ o4 E% B
5 Y% I4 z9 b' ]5 f2 v4 \2 \ca

& k/ @5 B+ T  j- J: p6 U, X! v- G$ o- V
initialize-settings
- P, [7 y' V( l; I  C* ^
# o  U; i+ ]- J: ~( G( \
crt people [setup-turtles]
. N. ~) L( j2 v( ^6 O' Y, }5 P
0 u' |, _8 h8 {) [
reset-timer
" |0 D) I% a9 o' y/ x

" r" F8 F- m) x, t5 ipoll-class

4 }" J5 Q1 P( b- i3 n- {
, o( ~6 `8 r) U4 csetup-plots

2 |1 ?1 ]! w6 {
/ q8 z' ?$ [2 Q1 [; X! y  Hdo-plots

$ V7 b# [- ]& p. V- rend
3 O6 W1 ?; P) v& [, o- v
7 V: @1 ?0 t+ ]- K3 S% `8 |! jto initialize-settings8 M5 M1 A- q0 e  F7 A" Z2 F

  N9 r, Q% ~$ |; Tset global-reputation-list []
* D7 g3 U) y' D
  R0 Z9 r1 \. |% I! Z6 ~
set credibility-list n-values people [0.5]
' g) a! T6 ~+ m; l

& E, R5 f8 \& z( @3 Y" p" a) Nset honest-service 0
1 i- k/ \; C& T$ z; q3 V. a+ r

" ^- S: ]; M# Z2 ~2 Uset unhonest-service 0
: U4 ?4 @+ W( J6 M2 B7 f) Z  z! |
( ~0 L, m: z) @  c4 |: B' A' \
set oscillation 0
: x  o# n0 Q, f( s7 w9 r1 s9 v: `
% D3 t7 w4 M2 t
set rand-dynamic 0

+ W9 ?4 S4 n0 s" ~% y  }  `( f1 Lend. _# u# N# W+ v) y! U9 r
* v) r7 J7 K( k
to setup-turtles
+ r8 D( z: o6 Qset shape "person"
1 Y. T' g0 y/ t& X3 s; }9 O! h+ `setxy random-xcor random-ycor. b: R+ w3 `% U( @) `
set trade-record-one []7 P" J' M& w4 o6 v2 |6 X
1 N8 y' W# Z; b+ M" p
set trade-record-all n-values people [(list (? + 1) 0 0)]
# X& `/ y' x4 d' c/ y9 u9 {( i
; C  B; q+ V9 {) d0 D! L0 y/ m
set trade-record-current []
* ^+ P" A' A; O# A+ m/ o7 Zset credibility-receive []
! x4 ?& G) ]# ~& Fset local-reputation 0.5
& Q9 R% E0 K# n4 c, ]- Aset neighbor-total 0
  Q7 P3 B! ~. {8 Uset trade-times-total 09 v: X2 [6 e: M7 h2 Z
set trade-money-total 05 I/ n9 t" i7 L
set customer nobody% a! x' {/ j6 A4 z8 L$ O
set credibility-all n-values people [creat-credibility]. I/ g7 e# |% j: }5 v
set credibility n-values people [-1]. f9 H  R% ?% f" }
get-color' J7 H& U' J# U8 d% `; w6 h
6 z' j4 D- F" L# o3 I
end
; n7 ]# @! T$ s1 r- W5 m
6 D1 e1 V3 E. _) b* U6 T# |1 z* rto-report creat-credibility3 ^( J0 E6 a/ Z+ c8 h# L0 t$ J
report n-values people [0.5]
( L* G/ |/ s$ p/ e1 \4 Kend+ ~: O% P4 h" `, G

1 p9 j8 T/ ?( S! s+ |7 P, G, jto setup-plots
$ H5 E2 J0 k  q6 Q5 S+ o# g4 v7 H8 c
0 a9 Q' d  N# |& `, R) T  K; Zset xmax 30

6 u7 n1 F1 l! b$ q, L* R4 T0 d" C. X8 B
set ymax 1.0

# C  J' g7 j6 f$ S! H4 i  O  j% q/ q2 I4 k. A) s( c
clear-all-plots

& u3 q6 a) h5 u4 s$ I9 s6 L
6 ?/ f; {& G' Esetup-plot1

2 I+ A6 T$ H8 ^+ l; h# F, x- s
7 k& q& E  n1 ]setup-plot2
9 f5 q; Y. w  o" p! c: \; t

3 u9 M2 f0 C2 _, w2 `setup-plot3
3 N" ^& ?) H+ d
end
# p$ H5 X- o0 |& r6 S( g+ b; K. a. j  w4 c2 t
;;run time procedures
& t6 J5 d3 S$ j; C8 t
5 q! W  o0 |, T6 _' k6 v9 [to go) l5 Y; O, q8 M+ J
) @' y; v. C: M) g; X6 Z9 S  B
ask turtles [do-business]

; v  `) Y+ [: _end
9 G; u+ `) C" ]  J$ L! F
( S0 p$ t/ U: Q" Y3 r( Zto do-business
& B: S9 n5 v/ I

$ o0 n. `1 i  w; k- C$ z- m
/ a9 f+ m# \4 s1 a: x" xrt random 360

( @" X2 W$ T( V- x* X' g# t6 M0 C0 @& u# p
fd 1
4 A  N+ ]; C9 B! ?4 }# k! @" s
" }$ S# q; f) M* a
ifelse(other turtles-here != nobody)[
0 e* q6 k8 m: E8 W3 ^" \- d( Y
4 [- Z, W. V" I! |
set customer one-of other turtles-here

+ }4 M; _9 y1 j$ i6 O) b5 N) ]+ I" \/ @
;; set [customer] of customer myself

) Y! b! p. x. \' ^9 V  R2 A& v6 Y) M# y; `* z6 Y; l
set [trade-record-one] of self item (([who] of customer) - 1)
- P- q1 B! J2 [8 g[trade-record-all]of self
! ^# l8 N$ Y; O% R( l/ E5 A9 w;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 M9 M* v1 Y3 G
, f8 j5 ]* u7 k9 ?9 {
set [trade-record-one] of customer item (([who] of self) - 1)3 E  `; \$ J3 e: \% ]. A
[trade-record-all]of customer

$ _& [7 }+ e3 m1 M: I
0 k+ B# x# d/ U7 Pset [trade-record-one-len] of self length [trade-record-one] of self

4 h4 v: l# A/ R2 p  Q+ Y2 v% o) ?& h
set trade-record-current( list (timer) (random money-upper-limit))

! t+ J0 n2 U4 o9 w; D. B& x2 m/ h6 j, g3 K
ask self [do-trust]) W* d9 R' k- _' q7 v$ z
;;
先求ij的信任度1 J4 a* Z( p3 a! V

3 W" f/ ~- ?, p2 pif ([trust-ok] of self)
$ ]9 c$ U1 m: Y: J; M, h;;
根据ij的信任度来决定是否与j进行交易[
* H" B0 c7 E% W( P' Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! a* `. H) }- z8 W% {4 g. _

# F1 ]' ]5 c6 f0 Q8 t* x[
. O7 _, \( p9 ?# ]

4 \0 E$ K" m  }2 c6 ^0 T$ G" l$ b* {do-trade
( a0 |* U7 a( M6 q6 J+ q

: H. o( y8 v/ ~$ Gupdate-credibility-ijl

! A% r- p) p: P8 y/ k# y+ j9 N2 z% l
update-credibility-list
' t% b1 _$ ^0 p6 X2 x8 _
* O, |0 m  A- \2 z1 ]4 @
9 Z: ]& r6 B; ^' W9 Z
update-global-reputation-list
" B# a5 h, d; p" s2 V0 X
8 `" v* p2 U# y8 w4 n4 v
poll-class
7 A* t& K1 e/ d7 i2 x
4 A  n: S5 e) Q7 v1 {$ V
get-color
8 a; f. }8 J! {
% v, `5 t# c8 t0 [
]]( a. G! Q; }) k5 }& {- M

. E5 `% e1 {, i: D' l# S;;
如果所得的信任度满足条件,则进行交易( T4 L3 G; O7 z1 P. _  t* r6 @$ _

: c! |6 w+ h. R[
2 U+ w, S# |5 x- A

9 V) D6 B  [6 q/ u' |rt random 360

9 O, a4 l5 O: A+ k7 o# T
9 A+ }7 K( [; x; G) y. \' l1 d# hfd 1
$ _6 B# v, \6 S

" X( p( u2 }; r  V2 S& l  D, s]
: a; K% Y4 v# d9 e( Q1 J' Y; U  R

& I! ~0 L+ z- _6 h, Mend
0 N1 ]% e- `2 _  Y4 f! A
: J  L% M2 U/ q% _: S; z
to do-trust
4 G4 l3 T1 m6 B, z( `; b! \set trust-ok False
0 u7 h: `1 }4 e0 H& w$ Q, q$ t- m) Y0 t3 ]8 M9 {0 Q' t
2 e6 A; F/ m+ ^/ t( J
let max-trade-times 0% A1 Y# o+ K' A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) o$ M1 H* H" P1 p1 L
let max-trade-money 0
+ u& k  ?5 q+ m) ^$ a' ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% v/ F; ?' l4 I: `- q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  l6 Y* a+ X1 k

2 l  H8 _# P% p( H) [

; K. K  b% M9 A1 ~; D) {- hget-global-proportion
+ F  _- N* s( k  ^let trust-value
5 @' R; W# ~4 g+ K+ p, {: F3 ~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)

- o, C, ]7 x' ~% Y0 {: oif(trust-value > trade-trust-value)! r3 a3 D" N3 m' h( O+ z+ J
[set trust-ok true]; P* S! t1 J+ {5 o- H
end7 Z$ c% e, w/ r& s$ F

' k2 i" d! v. a* a1 \, v8 N0 o, wto get-global-proportion
# f3 g: S; \; |  t& a' cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' n! Q( A( A' Y. S  d; t$ E% T" q8 @
[set global-proportion 0]
5 ?- W7 U  U% T/ n9 t' c7 S9 y5 }[let i 0: N! k) W* Y8 B9 C, M& h( ~
let sum-money 0
+ R0 A) Z/ s6 I* `2 }1 h0 Swhile[ i < people]
5 ?/ v1 l5 L- z[: Q7 {3 o- `* {4 |
if( length (item i
2 Z2 d& r, Y2 Y. ]) S: B9 U' }[trade-record-all] of customer) > 3 )

) l' _& r6 E( M6 ], W. ]3 z[
" b: E9 ~- e; m7 ]* m8 k0 y3 Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( d9 ~- P% ]- M  L; V/ R2 c
]
) q9 |- D& J& g5 v]( `$ Q- E& T1 e1 U3 W  @9 V
let j 0
  p; I8 s0 v4 Llet note 0
" H+ T" s# B7 Q+ D, bwhile[ j < people]
6 C. \% ^4 i7 k" E# g/ \[
6 }4 g  L' h8 s) b2 e# p  uif( length (item i
; a, e( r  j0 ~1 v[trade-record-all] of customer) > 3 )
) ?+ n- c; ], g8 f' {
[4 `2 M% `9 m/ w' O$ a) v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" `0 K( t; C! F  L; I! J5 U! |/ j& G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ V0 Y/ ]8 @7 t0 ~7 a9 s# s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 ?' f& w4 t+ p& N]2 C. _7 C. n; O+ _/ r
]
' M( h1 {+ ]1 x0 rset global-proportion note
8 Q) Q2 ]9 ]! O6 A, t]
; r! s7 @5 }4 W( W# m5 O$ Aend' G& v4 a: r% Y! w* O
9 z: L" g+ N& A% e4 ]9 F" {
to do-trade$ O! s  F/ a" _4 T$ y* }7 Y- G2 i
;;
这个过程实际上是给双方作出评价的过程8 W4 T: @( J$ T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* R# d! h, I/ E4 G0 \2 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* i. Q. X0 Q' d' Y
set trade-record-current lput(timer) trade-record-current
: h4 s1 U5 o% z9 |8 S! u;;
评价时间
+ \2 L8 {. j4 n7 U& v0 yask myself [
. D% M# v6 t4 T. p* k4 jupdate-local-reputation
- n8 L6 R7 }  \! cset trade-record-current lput([local-reputation] of myself) trade-record-current
% a) {) O$ a; J3 P9 w]! J, s& x* B5 i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# u) M: ^" \* n$ E$ V* ]$ m
;;
将此次交易的记录加入到trade-record-one
$ Q6 A7 z2 s  X+ `9 i" L; Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 N7 I7 L) W5 z# e+ \7 k1 I
let note (item 2 trade-record-current )8 g3 H) a9 [' T, ]+ l) B: j# R
set trade-record-current8 q, p) L( Y: Q
(replace-item 2 trade-record-current (item 3 trade-record-current))
! s- I3 \$ O, O- X; j5 R1 y
set trade-record-current
  W" W% O- g/ T8 S" d, |: L4 ](replace-item 3 trade-record-current note)
  J4 T- U- F3 X. V' Y
7 s; C4 S) v' n/ I# A$ f
/ V8 P" s: ~3 E- q
ask customer [
8 I1 B3 C- H9 b( l$ n& \; Mupdate-local-reputation
* w5 s- g5 Y: a, Eset trade-record-current
* {. U+ M* y  E9 D" o! J( G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 @( d  b' J6 H; ^8 {2 U8 o% a% I]
6 T: F7 p" X- c- ~8 }
, D+ k" P! Y% _) i# r

1 R7 Q/ X- g) p5 Y2 Z3 e$ Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- n, N  v( n- ^  [0 m0 S# F

. G5 I8 [- M- q+ X! E  q* |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ y+ v- D1 R' K  B, r;;
将此次交易的记录加入到customertrade-record-all0 m1 h& k( y, e' R% {/ }6 k$ w
end
3 h6 j' p4 V4 r( ^7 s$ t0 h( y! b) z( k
to update-local-reputation
7 k4 x1 T. ^; q1 L, \6 yset [trade-record-one-len] of myself length [trade-record-one] of myself7 O! z; b" U  D/ c4 M& Q5 M; N
; ~  h; p# u, K1 C, o6 G* z  |

* b# Y; r/ _( `3 t8 Y- g' a;;if [trade-record-one-len] of myself > 3
$ L; r' B& H: |
update-neighbor-total
' a2 H2 R4 r/ B' W5 o# D3 m$ i( O;;
更新邻居节点的数目,在此进行8 k7 x; I& [9 S  `
let i 3
4 r$ G+ g* {5 K" g) Q. glet sum-time 0( i9 H% j5 ]9 x( e5 I& h
while[i < [trade-record-one-len] of myself]7 I- g0 L" i. U# |/ N5 M, M0 T# V
[( V% A$ ^; n. ^. b- V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: Q! j9 Q8 m. a" r7 D7 jset i
2 X9 j' v9 p5 i% @( i + 1)
* ?8 v! q* h5 U/ p
]
) G. b1 C7 q, K8 J! vlet j 3; x- a! n* V( I& S- J# P* @* E  ^
let sum-money 0
: \) M0 L# P- G  B, U9 f) twhile[j < [trade-record-one-len] of myself]% i9 F1 V$ p6 q! i5 d
[9 ~8 K2 I$ j0 s7 v
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). q3 n3 M* P. \# P2 |
set j
- i9 ~! k0 H) v7 U: X  y2 C: C( j + 1)
, V% y- W# B0 _7 H$ b
]
( _0 l8 {  L$ M) @let k 3) P& E" g3 K! t4 J% ^( U
let power 0
, W& x* Y; E" H. c0 @* ?6 zlet local 0
- ?# k; R, O1 N: Lwhile [k <[trade-record-one-len] of myself]
* ], G1 c$ k& ]8 g; C[
3 |4 G* O8 U: rset 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) ) v9 n$ V# Q& P6 Z* w# P: ~
set k (k + 1)1 K0 A- S7 o" V5 ]+ g% B8 `+ p* U
]. C/ h% f: g' t- e" s2 [# r
set [local-reputation] of myself (local)0 r' D6 Z  c% \
end6 k! [7 F& [6 L8 O$ e' x

5 X* S# }# k" ^& C' n: w& Gto update-neighbor-total; f' d% ]; o/ o
6 y" X* s* l8 O, V. |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) x4 L/ B. }+ Z9 T. M7 t6 ]

, l" ^$ {* t7 k

# ?/ z& t& h% |5 {end# Y9 m+ i+ S+ g- c
! S) W% t* ?% r9 v5 \% t/ [% n
to update-credibility-ijl
5 Q7 E1 l- A& k: q, w$ `. T. l' G6 F) w: }7 R6 H, n( K: 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。* k  S) U- c3 r4 a$ V. E" d
let l 02 C  e1 `/ |% ^: k
while[ l < people ]
9 v1 q+ j' i" q" I' H5 R  n! r;;
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" Z. y: e$ P- n  y& D/ V
[
! \) M: R4 R1 a% U/ s! a- _8 h' Ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ O0 N- D' U! Z& X' a9 }
if (trade-record-one-j-l-len > 3)* s4 g8 {3 _& X3 I$ I
[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-one4 L# V" A9 Q3 v$ C! `6 C
let i 33 V% S; C1 Q! Y: S* r$ L8 S- y
let sum-time 0/ o  ^  @* C7 _7 V0 {4 ?% w
while[i < trade-record-one-len]
# [, f! G0 G, {% v, K# q1 }# t; C[- C- }7 X  i; \  Y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ L4 F2 D' f! S9 V/ ^( o' r! w# l
set i
( u4 j8 r( C% l  @( i + 1)

, F; q* ~  U  C. H4 L1 H]
8 k" @) {5 g" Z, xlet credibility-i-j-l 0% G5 C' U* @$ _% _, t& y, `$ z
;;i
评价(jjl的评价)8 {- t$ @! s' e7 `- K
let j 3
7 Y% e8 b2 D( L0 D/ ]: l  S( nlet k 4
5 l/ N8 k/ `; e5 wwhile[j < trade-record-one-len]
  j- ?$ E/ G; P( n2 B' Z, |. F[: F4 N; e3 v+ F
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
2 d2 o$ q* R" p$ e, h; ]6 G& pset 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)' L: ?% I* A: W7 e# j$ Y
set j
( F$ D' _/ v( ^0 o, J( j + 1)
& M0 ~4 d& ~5 A; w
]( \- t9 o+ K1 m: I; _4 O
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 ))+ u( S6 s4 G) k3 G

( h/ y" T; L/ x+ W/ J

2 [$ z3 Q9 w: S. Mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) j5 [7 u/ ]9 b$ i" }% X
;;
及时更新il的评价质量的评价
) H& u  W5 n7 ]: Q" u: gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ k% k7 I0 @% e3 Tset l (l + 1)  a( J9 t% _/ E+ A
]
" r8 Q# S/ W% x% `- C  send0 u3 x. ?& H3 M! Q0 H7 o( j7 I  [
2 g# S/ ^* J! u5 A# n
to update-credibility-list! Q  ^9 @' Z0 c$ Y
let i 0
. f$ }3 p" ^# S+ b) X* ^& f! y0 Kwhile[i < people]
, T( @3 ^$ h1 F# w[
5 z( {; ?8 s" }. Llet j 04 L7 v6 W# Q3 e4 d7 ^4 O
let note 0' c& H: S& h3 t3 c
let k 04 K: E" F7 l0 V- f/ O
;;
计作出过评价的邻居节点的数目
2 \% ?$ I+ O4 S  Owhile[j < people]
5 K% T+ }( u! w1 o8 B& Y" [[
  C5 [& }& R7 f# nif (item j( [credibility] of turtle (i + 1)) != -1)) Y, n9 y; Y! K$ {7 g
;;
判断是否给本turtle的评价质量做出过评价的节点& T( R$ `( O# Z2 g# X8 V% c
[set note (note + item j ([credibility]of turtle (i + 1)))
: o, a! s6 C+ {, k  ]3 l9 i;;*(exp (-(people - 2)))/(people - 2))]

0 L2 e3 u9 D, u7 l* v! M8 ^" Nset k (k + 1)
# U0 S. A3 ?1 J& E]2 A+ c. l1 k) i
set j (j + 1)* ?7 z7 ?$ X1 o
]& l1 b6 `9 |/ I: i
set note (note *(exp (- (1 / k)))/ k)
0 ~& p7 V# C- x* Bset credibility-list (replace-item i credibility-list note)
0 V& O+ h  r" }' ?0 N/ {) j8 Hset i (i + 1)
' R- b6 ?6 i( Q1 P  k]: z9 }4 t! l3 m( W3 [
end
: F9 R7 _" h+ L0 G. U/ N/ {
6 u. u1 y- \! l8 x! R, i2 mto update-global-reputation-list8 D6 i! _0 e2 j2 Z
let j 0" F" Q8 r" W0 \/ d
while[j < people]: q( h8 N. @2 B! c
[
+ O# q: Z# I+ `7 @0 j& Ilet new 04 R' y! s8 T8 V
;;
暂存新的一个全局声誉
# s$ ~8 O. I9 o/ x4 L) clet i 0. ]6 B: r+ m. J2 R- ]" e3 @! F$ L4 q
let sum-money 0  y4 v2 S8 f1 x: ]6 r0 |
let credibility-money 0
/ O1 E) ?; t7 s; z3 fwhile [i < people]
+ m7 v0 p; o1 |$ A1 g[, o& W+ s# X3 K, Y. p+ l4 c1 D
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). R4 `/ k9 ]" S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ Q# R1 K/ q2 Y. a! oset i (i + 1)
( H; L% P+ S' U' o# [9 ~$ H]
0 Z! M( @' }( Clet k 0) b" I5 d8 a- r$ K
let new1 0
( u0 |, w( {0 Z, ~/ y, Y& |while [k < people]
- a8 l3 p$ d( z$ X! p; q" A/ b[
/ E8 x  L+ g, F& M. uset 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)
9 b5 N$ g2 W. ?; W0 M& W% wset k (k + 1)6 d- b1 C, d( |  j
]: E3 j3 ?9 Y; ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' o6 J5 F) O' A* G3 Hset global-reputation-list (replace-item j global-reputation-list new)
# U1 P# ]" e2 I) r3 V3 @set j (j + 1)
% M, F+ u3 n% L$ O% ?; G& W" i]4 J- L; \( j/ d6 `
end1 ^8 u$ ?4 o! T
- j: P& a5 ?- `0 m7 ^# N6 T

. \0 |2 `4 P9 G1 m( C: Z  R% P6 P: D- r/ P# S* Y
to get-color
. H) B: o/ d9 c# M/ [
( ]# u0 ]8 `% sset color blue

* Z" `. W4 v5 y* n7 {+ Mend5 a. j2 y+ H% I/ A$ |1 s
7 R2 `2 ^* _9 u1 W3 U8 F' c  Q# v& T
to poll-class
' ~$ N) \( N9 N! h1 ]end! T" a+ h* [4 h1 m

5 r0 u! l, K9 _* y7 ?1 Z# lto setup-plot1
$ A& w6 m9 U2 c4 r% ^  P8 e+ H
  r! |& x3 ~  N6 s& i; |set-current-plot "Trends-of-Local-reputation"

5 i' n. q- ]1 O, n! ?7 {% }
8 c0 c  O, u7 A7 Q9 Iset-plot-x-range 0 xmax

1 u' C4 [2 W% e
* u7 c( i0 R$ ^; a* Uset-plot-y-range 0.0 ymax

9 D% R2 r+ x- Q5 B: V2 f2 bend# e. F, q( Y2 X# y* [
0 E3 o* |- v, x9 M, Y
to setup-plot2
/ Y2 s6 P/ Y  ]4 `8 l& q4 K; |
set-current-plot "Trends-of-global-reputation"

% j* R3 B( `1 N2 J
2 c- n* H) W* dset-plot-x-range 0 xmax

; ?+ g( L2 E) R" @: k; w
6 W, y  z2 L3 }/ s: X/ R2 Y- Nset-plot-y-range 0.0 ymax
$ z" Z. p0 G+ N0 X7 U" r
end  j) H  k; ]% d% u5 B
: V+ u* `. L! B1 U
to setup-plot3
$ |% ?( r. p. o* |' g! m; `- x; Z$ K0 L$ I, f
set-current-plot "Trends-of-credibility"
( l; ]7 H9 v. n9 {8 m) m1 I0 \

4 g6 a- V* d7 ~7 _* X6 vset-plot-x-range 0 xmax
; Q% k' f: Y- {; x" P/ Z! ?
4 Z$ r2 W+ F) W
set-plot-y-range 0.0 ymax

: `, G/ r2 B; V7 M+ S8 Yend
" P; {3 I& \4 Q; n% P2 ]3 e  X+ l& I( c8 s; Q4 E/ O9 h
to do-plots
1 `% E  ~; s& _7 }: _# P2 xset-current-plot "Trends-of-Local-reputation", b  J) D* w% p- f' F& M
set-current-plot-pen "Honest service"
: U" R0 L+ U3 I! O8 L. G. Fend% v. K  @  _  @0 r$ z& Q
' e0 Q% z% x0 @) n  L/ w/ W
[ 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.
' K6 s9 i3 n/ {% p9 l4 C) ]# k( U7 J. r9 ^7 V4 Q# _. |: ?
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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