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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:
( Z, p+ ?8 {6 d- E0 Q/ R, ^4 Kto do-business 0 M% g! z; p, `, [
rt random 360
' [- V1 U3 m; R% K7 ^0 i+ d fd 17 L$ g+ j0 {, q: v5 q
ifelse(other turtles-here != nobody)[
$ B. M: n0 y; L9 ?4 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.5 v3 h) C4 A" b3 c: K4 q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , O4 Q) `' D3 L  n# E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 J1 A  E: D- g. B8 l% j
   set [trade-record-one-len] of self length [trade-record-one] of self' W! n( M+ P1 S$ k
   set trade-record-current( list (timer) (random money-upper-limit))
3 s' ~+ V. M0 f! V$ O- _0 o! \- N
问题的提示如下:
, L) y& E% R0 P5 _% {* F8 {
# Y2 u$ R, w  A- C3 b/ Y- \error while turtle 50 running OF in procedure DO-BUSINESS* ?; j) y7 B8 P% w! y( I9 b2 I
  called by procedure GO- L4 J" b  R. y, Q( O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 z3 ^% B4 ^) v
(halted running of go)* g' R  o+ }9 m7 g8 ]- |7 q" L
+ r8 r, }& R! S
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~~  r' K# X8 n3 A
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 z& r+ K' i9 z) _. v; x( `" sglobals[7 X0 v1 O! z& Q
xmax  f, I9 E# v7 K# o0 S( p: h( C; O, @
ymax
; l- H6 V: n4 X7 w/ g" @global-reputation-list
  H' J  K' V4 @: o% m3 {& S% \
2 d3 E) m8 T# U;;
每一个turtle的全局声誉都存在此LIST; Y+ c7 |6 l3 J( d
credibility-list+ N% t: Q& M$ {$ V5 ~0 Z9 v, z5 S
;;
每一个turtle的评价可信度
9 C  e& C' A( s) A2 ~6 Zhonest-service9 \7 Z) W( R) y8 \% t
unhonest-service6 ^/ y7 M, J7 ~/ z
oscillation
3 n9 C( A/ p" s, P% z) R6 prand-dynamic+ S: L* z3 P1 N
]# q& p5 G0 ~' b7 C( r5 v" G  n

4 o' ~/ W4 z, @+ s. A: Z- Zturtles-own[, ^7 z  Y& U9 D& c
trade-record-all$ M" Y7 X: s& P! {2 p, R( Q% X4 Q; u
;;a list of lists,
trade-record-one组成. c; g* u1 L" P
trade-record-one0 h3 z" S! C) `3 y2 k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' `* x/ q1 O8 q* a! e

& N( J3 U4 C6 g8 F;;[
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]]( n+ ~, Y1 f1 P* h% z$ l
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]9 V& }8 ~' c( ^- s
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
% l! Y. H) d% l" v" @: K/ U  c+ `neighbor-total
% d" V6 a, h/ I, P: ?2 q;;
记录该turtle的邻居节点的数目
! W1 B5 e; G, ^  z, U3 a9 wtrade-time$ @$ k% B9 v. h' P/ b
;;
当前发生交易的turtle的交易时间
0 d) `+ R  @( H* c8 Uappraise-give. Q0 B$ H/ n- s- W9 E! `# ?( E
;;
当前发生交易时给出的评价8 }3 u' z# Y# L7 m
appraise-receive
- j# ~3 Z4 R- A1 N;;
当前发生交易时收到的评价
# Q8 L4 {/ [$ Z6 o1 z* h! ^appraise-time
/ O; z" A0 h& d; Y' x;;
当前发生交易时的评价时间* {5 P+ K) V! M- E( S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) g9 l8 `* {7 m9 j9 rtrade-times-total1 m3 w; L& Y9 |
;;
与当前turtle的交易总次数
) b4 N1 I' O; {1 i3 t0 Otrade-money-total
- [2 `4 j# `$ ?) |+ c7 \;;
与当前turtle的交易总金额/ c& E7 U, i( d: s( H- S
local-reputation
3 [3 R' e+ i* a& wglobal-reputation* a9 ?/ ~" W: G& T
credibility
8 M" t2 ^* l4 J; {( m& e6 @% H;;
评价可信度,每次交易后都需要更新
3 d) Q/ `: s1 M# w9 Z6 acredibility-all
( I, ]- P8 u4 \% G8 K: y6 };;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: G- V9 m& I

  T! H7 T8 w. ?9 r9 G' [* z;;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0.59 [- I* H. ]1 ]& X
credibility-one
1 a  ], Y  N! N7 z2 w" e, @;;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* g6 K2 I6 L# aglobal-proportion
# g0 M* D7 p; Pcustomer; W! Q2 B8 l0 o
customer-no) D" I9 f4 ~" o' H
trust-ok1 G/ d+ s) `0 ~( c7 S/ ?. D
trade-record-one-len;;trade-record-one的长度; t1 F! T% x5 K
]8 A) N  z( C$ V, e6 ?3 |' {

" _! w, H* J& B2 L* b# {;;setup procedure# }# h3 d; ?5 K! A: y

$ j  L" T* j! |) x" q$ ]4 s2 gto setup
# L2 Z$ n) B. ]/ o& Z& J) ^1 j2 n$ a2 J2 ?( p) r" M6 y: p: e
ca

/ ^6 c% @' J4 L; x; J* z1 h8 }) @( ?/ J! @( a; q
initialize-settings
2 C9 t" k) X; B6 p% c! z
0 L2 `1 Q. V2 Q$ {( J
crt people [setup-turtles]
" [9 B* `& w1 @7 R
. i$ A/ o8 e# u( O/ c$ W
reset-timer

6 }' p7 p8 N- j! I( b& B: X. l  H+ h9 ~3 ]( E
poll-class
, t8 d3 Q2 S3 y0 G+ |1 [
, b) _$ U2 z2 z
setup-plots

  \3 m9 {' f* l$ N2 K
3 z* n$ ^6 h" w2 [2 ~6 k( zdo-plots

, s9 a$ Q* x% y5 Z5 ?- V, N: jend4 z/ \6 ^4 M! k

! V7 W$ ^6 V0 Kto initialize-settings
( @; [% G! \  }
7 `: @) T1 D% c" C7 V9 c0 Sset global-reputation-list []
, W/ A1 A" t( Y& i% h5 M

2 B" X& o. {2 F& n  v* ]! X* K2 jset credibility-list n-values people [0.5]

2 O' w0 Z2 |' ^% [1 e- {
  Y/ M( z; ]3 d6 j2 @  u* jset honest-service 0

- D7 n2 Q3 _$ L  o8 n6 k) S
! K5 E  t3 j0 p4 e7 c; F4 N# qset unhonest-service 0
& e+ y7 E& z4 z% \, c% I5 ^5 w

3 I! i: q5 g  Z* A5 cset oscillation 0

- {# m7 P4 W+ o+ a0 f( {$ |
8 T; N/ Y: m$ M( J: xset rand-dynamic 0
9 a0 _  _. h! S  S' E0 L
end
( z* T$ c1 T* b
/ K) n) C5 q9 q' E# d( l: |  ^* M$ xto setup-turtles & J2 `/ O, ]% c- p! K+ ]8 u) O
set shape "person"0 i0 F. m- C/ \. b* H
setxy random-xcor random-ycor
1 Y( y( G* @! E1 mset trade-record-one []$ b% f) ~( y5 f9 L

" U7 Y% S  \7 G) S; J: e# xset trade-record-all n-values people [(list (? + 1) 0 0)]
0 ?- [1 {; }: V- f5 `+ S7 O8 ?: J3 Q
0 R( R% n  U4 f9 C, _
set trade-record-current []
1 w* I5 b" H- `+ Q: I0 Aset credibility-receive []3 _; w+ s: \! F2 O: @8 S
set local-reputation 0.5
, b' t# `8 n; \% P9 }9 A9 C) ]set neighbor-total 0
4 s6 [) o7 G. p6 ^set trade-times-total 06 h( X+ L+ B" A" g- b
set trade-money-total 0' ^. E* R! y( ^" o  x7 Z. G$ O
set customer nobody
6 ~$ d: s& |! U* ]set credibility-all n-values people [creat-credibility]
. d5 c8 w' J  Z$ Qset credibility n-values people [-1]( A& z5 `9 U) k$ l" W/ t
get-color
8 R, E, {2 _% i

4 @/ c* d# i1 O0 yend
' J& r4 l" z! h9 b. S7 J( ~$ \
to-report creat-credibility
, R+ V& d  k( U5 i) Breport n-values people [0.5]
5 b7 O4 }! a) Hend
. \! A& Y: k3 M7 R  O
- u. O" E$ f) N: v& e& c1 N  bto setup-plots0 }+ d8 `/ L9 n8 Y; {7 h, L
2 I+ N' _0 `3 W  m5 w
set xmax 30

& _9 x4 F% v: S2 i  e! E9 [( b1 o$ b% u9 c. O% [/ R! T8 C7 B  n! j
set ymax 1.0

1 f! H* O  ~" D( w! D1 Y; G) C' l* I1 U7 ~. P
clear-all-plots
1 B# J9 B  l2 X: I- @

6 ?6 \- B6 m; }( ~7 ], Z2 ysetup-plot1

* ^6 s4 \: h* K3 c! F9 l6 v8 @. t$ A6 ]9 K* l$ _, }* u
setup-plot2

0 v$ N) ]& [$ H; \" H/ Z+ C5 i) A- A9 x+ s( \
setup-plot3
. ~6 L" D; j/ K1 x' S; ^
end
! e. Y  }$ [6 e% X: h6 J' j
* }% h1 o7 _6 t2 S3 o2 O- l;;run time procedures
, R8 `  V" {2 a8 w  U4 w% w- R7 _3 v$ G5 h9 s$ I6 @
to go) s9 B, w9 P0 F. r

6 A  E' }% s1 L/ X1 {ask turtles [do-business]
$ o' Y% _. h4 {
end
& b5 [8 n, H( ]' ~( a1 h+ C8 }
) Y" p& W; m" ?& `to do-business
* ~& |8 d2 x( g) I7 |

6 T' x7 f' A' \2 j& E
! n4 Q- y0 O5 g! Q- W  u" p2 c% Art random 360
" G/ h- t( R# L: {; {, O

7 d4 n, z' B  B0 ]1 U* }& ~2 ffd 1

$ ^* h) w) [! R: ]" a7 I1 M5 T5 ]3 |* p( s1 k. M1 h4 i
ifelse(other turtles-here != nobody)[
' U$ N$ ?) _& w1 x& P- a) M
8 e, B* x, u. ~5 w/ \* t1 |( T
set customer one-of other turtles-here

$ b! {8 k" \. {& W8 r6 s  N+ a/ d& }7 U- \; U
;; set [customer] of customer myself

9 x" e$ ~) ]6 g! g5 g
; {# q8 v6 T* ]- I1 }9 k! q, ]set [trade-record-one] of self item (([who] of customer) - 1)/ r, y: e1 x6 K- u& \$ u
[trade-record-all]of self
6 u* U5 p0 _, `) g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ U5 o+ c! a& v2 I( j

8 [: Q2 V$ p0 P  C: Y6 U! b- sset [trade-record-one] of customer item (([who] of self) - 1)
1 ]6 o( I% C  l$ D4 X[trade-record-all]of customer
9 o6 g6 Y  R2 l! Z! y* C6 t' E

" S. C1 W3 v# |0 cset [trade-record-one-len] of self length [trade-record-one] of self

- I: C5 Z3 `: o+ i3 d6 V1 ~
8 a; z" }" y3 f9 L- ~3 _2 D  \set trade-record-current( list (timer) (random money-upper-limit))

$ ^0 E8 s- {/ \+ [8 Z: J
: q4 `3 H; H$ K& o4 U6 Sask self [do-trust]
7 S# ]6 ~3 v$ [/ ^;;
先求ij的信任度
9 V* n1 m' @. Y6 [4 s) D5 g
% s  u) H3 @$ D. @2 I" ~if ([trust-ok] of self)/ g& {: T/ C  g
;;
根据ij的信任度来决定是否与j进行交易[
8 l9 g% K: b1 e1 Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 |, _& q1 |0 b, w3 n! T2 `

4 v& j4 A' @% |[

; _4 i  B4 p8 ?: |" Z
5 R9 l9 o3 T. ?/ F8 v+ tdo-trade
  w) p: }" G$ o0 ]0 K6 F1 P

! q  c2 }# x+ Tupdate-credibility-ijl
9 s2 o! Z  F) C: [$ _, P7 n/ G: a7 z

5 X  Q. M' p7 q6 wupdate-credibility-list
. @, g0 x1 j# f8 ]* B. A# y
, K+ r! T' x4 m
  ~7 j. z: k& B$ l" f/ ~" O5 S3 L
update-global-reputation-list

! c9 L2 y+ j8 q) N8 u: ^) y
& l6 l( B) {* b) v! bpoll-class
) `/ V- h$ a5 T: W) T9 G; x- ^

  }8 d( u3 u* @get-color

, a$ C+ k9 C9 `) Q; s$ Z  p6 ]4 e1 W
' u# f7 i0 O; _- a" t$ H]]
; A4 [' D9 x" y" j0 ]5 ~7 [0 R+ H' u( S
;;
如果所得的信任度满足条件,则进行交易
7 I+ v9 n# ~' u0 Q0 M) \/ k  P# G$ ]: r8 N& y
[

2 U6 }, y5 y: {$ E
* ?, |$ z, I. g/ C8 krt random 360
! [" B5 k0 B  H" L1 F  ?
9 E2 j$ T& X9 r
fd 1

. o3 i' i- {! E8 C3 L. y/ ^; y. z. q" v9 P% I5 ^
]
8 t1 o' {* L- ^8 |

5 N/ T7 M+ u5 t4 Oend

6 B! n3 x5 G* G7 Z# V1 M; S3 \/ x4 L& j0 Z/ E" V* M- k
to do-trust
5 z7 E; c# b' vset trust-ok False, E% U$ U5 v% w4 C' I3 D: S1 ]
( I$ Z7 I. _! a3 M/ |
3 J  ]3 R4 T. u
let max-trade-times 0
1 ?/ y. ^. _4 _5 ~# q. n1 hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% }$ d: F8 @3 }: Klet max-trade-money 0
1 q; n/ j, L/ W( uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 J, [8 _5 ?0 ^2 l: \# Y& J* V# |
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( T. b# y9 E1 c

5 n7 _: J; b3 u2 T1 d% c9 d5 [

' ^1 y( X; ^  p8 N$ f2 iget-global-proportion
2 z% K' C/ a" R5 y" Y' alet trust-value- h% x( q/ Z! w+ _: S( R6 a; \
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)
1 a2 d6 Q. [8 I/ O0 ]& I* }- u2 S
if(trust-value > trade-trust-value)5 D5 z9 E9 e& h; u* V  \. C1 t
[set trust-ok true]  C  ]6 b9 d0 Z9 t, W6 r
end& k; A' A, t0 X. T2 L

/ ^, b. ?2 m( ?; sto get-global-proportion, V  Z8 q+ {/ R1 }  w# `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 q* \/ L) \7 P8 S  n
[set global-proportion 0]
. e( W6 t  j% O3 k$ c8 S[let i 0/ s" a8 F! J8 v
let sum-money 0
* M9 i. ~- E. R' A+ i0 a7 gwhile[ i < people]' j+ O! B  r) D& c1 t
[
* `6 Z  S" k4 F$ c% Q, B  Uif( length (item i) q9 v) G3 r! f5 F" I1 m
[trade-record-all] of customer) > 3 )
6 r( g# X! z, E2 t7 r: w9 e
[
3 F; s3 P1 o# h, Q) Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 e) G0 s7 a9 Q
]
' e5 O/ G2 N9 L8 l]% L3 c( \( o- U, v. g0 b
let j 03 y7 J5 D& H; g
let note 0% K3 H  E+ _3 m" i
while[ j < people]2 P7 T( G5 J% D- X; H& r
[0 [& G! ^) C& L. j2 k& V
if( length (item i
% K; g& I' B; Y* c[trade-record-all] of customer) > 3 )
  I2 w1 m3 T  ~) `9 [3 w
[
: L- X  L% x" @$ Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ I* u5 z0 i1 d' Y# Y# h; ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; }8 }( v' d* w! I6 w0 I2 b7 f) N0 w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 S7 Z" f7 x- k1 c6 J* i2 M' }
]7 n" M0 ]% W" Y8 w+ s0 ^" h9 _& b
]5 p8 m" N1 k2 V0 g8 W+ x$ [2 ]
set global-proportion note0 L) I( K2 `& g9 E" G- R; h& U5 o8 M
]
) Y1 }5 l" l$ L" a$ Q* V. Bend
, a+ ~$ I7 }# x2 j% d& q4 e+ k( T; @# h+ D
to do-trade" @) ^5 v" a5 v8 a6 W7 j
;;
这个过程实际上是给双方作出评价的过程
: e- K+ |7 U3 p5 Z8 y; Z, E7 Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! x9 _4 C" ^: v5 q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% J8 J3 j; D7 G- `5 y; Lset trade-record-current lput(timer) trade-record-current; E0 g! P, _& P8 z
;;
评价时间
. ^  E! n  L6 z- O+ ~8 mask myself [
0 G/ Z4 E4 C8 x3 Z+ t6 {5 y' kupdate-local-reputation
( X1 W  e8 l4 jset trade-record-current lput([local-reputation] of myself) trade-record-current
: f6 T( o0 T7 O& t  ~. W1 {]1 i9 n. H  T& R7 R9 M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, ]% N1 E9 T# h3 }; c. [# [& h
;;
将此次交易的记录加入到trade-record-one
( W) F$ H+ @! w2 ~  [1 ?# rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% l& H, k( Z7 G# l( Jlet note (item 2 trade-record-current )
% L# m+ q7 e0 eset trade-record-current
( C9 {; N- g4 k4 Y# r(replace-item 2 trade-record-current (item 3 trade-record-current))

1 V1 b( ~7 ]% F! t9 S* G  hset trade-record-current
6 a) J& D  n, q9 X" m$ u(replace-item 3 trade-record-current note)
3 c  G* e7 b9 i
/ w/ n; B4 k! P4 ?% u4 q
) c+ e9 K8 w# W  O
ask customer [1 m- T: l+ p7 D2 r, q4 J2 M; X. K8 B
update-local-reputation
) P( D1 E/ F( qset trade-record-current
9 d7 C. }* d' y+ u  D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- Z  }. _3 U, ]0 l* v8 ]]
: B6 F( ]. q* h
( o# ]+ V0 ~- O2 x+ J
0 y9 N2 C  H. L0 {4 r$ L4 r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 Y; m2 M1 T5 ?+ g
1 E! _& P: p7 f7 e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 K, ~0 O, f; Z1 E7 S
;;
将此次交易的记录加入到customertrade-record-all
2 s3 a2 D/ `' I) Gend3 S/ S3 D/ y' O$ q. T9 U7 F

( d. w# D! R* _1 R6 A3 X7 pto update-local-reputation
* D/ M0 u4 Y) ~) Aset [trade-record-one-len] of myself length [trade-record-one] of myself
+ ~( ~' ~% }. o; U% [' B' X( k6 o/ _
0 t8 N1 S. q8 o. A: H
;;if [trade-record-one-len] of myself > 3
6 h- h  m; o7 U+ i: W9 r3 h: f
update-neighbor-total9 B% B9 d/ G+ @6 c" `; m  f
;;
更新邻居节点的数目,在此进行
, Q$ s+ ^- c4 A" C) qlet i 3
+ d0 E; N, Z) v, B+ z% glet sum-time 03 i" D$ k$ s/ j3 V7 M
while[i < [trade-record-one-len] of myself]: _- W* ^; N, n0 W. @/ h, u
[
: d1 [* h; y& B( l' |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 m: }! ~. R% ~( j; `
set i0 x: s! r5 e) I  Z8 r
( i + 1)
4 L" g; ~9 v7 |( V7 z) O
]
+ C2 A4 W3 V, b$ @let j 39 C  g7 [9 z; {& X
let sum-money 0* T7 g* j* W9 l4 d" O; v) _
while[j < [trade-record-one-len] of myself]
" c: n8 g9 b0 ?& F  n  C9 p1 {[
% U" n/ S- ]9 r9 L& zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 O6 r3 B5 L( tset j% P/ G$ E+ ^, v* [$ ?; _9 P$ X
( j + 1)

2 L0 T, ^/ j1 G) b' d]
& U( h  r. \; z' R! D5 k9 glet k 3
+ ?0 B3 M; {1 @, t2 I# slet power 0
- A  q  k* b  R: D0 f  @let local 0
$ ^0 v: \; ]+ T) p# u$ _  \3 Awhile [k <[trade-record-one-len] of myself]0 v4 b1 \1 f, r& G# k" n
[
  J) V0 a, ]2 c/ S8 |. R) i8 Q0 vset 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) 3 F" D1 m# V; F* Q  M9 |
set k (k + 1); N1 U* t, q  q/ S
]3 H# @; ?( R8 [0 u& ]+ k$ k6 H+ g5 X
set [local-reputation] of myself (local)7 x6 X0 `4 G6 s/ \: P5 p  ]
end' \- o( u4 \( L

. e  U5 q% j. W" ?) l1 M8 ^$ A) ?/ kto update-neighbor-total2 v2 f! q) B& T% O
2 ]; y; l! ?7 v& N, j
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. L5 ]$ n* \% k0 A1 D& s7 s& b

8 N. x% G6 k$ E: ?& L, {+ u
$ h+ {2 t2 x0 `( w
end: q6 O* z: A2 `( n7 N: @
4 ^5 r4 X5 x4 O" Q$ x
to update-credibility-ijl
% ?( `) I3 V5 O) d7 q& a! p, p
3 q9 r4 o5 {, w5 @* 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。" ~$ s& e1 v: V/ E3 K0 [  q5 |$ \9 q
let l 0  H% r1 }8 E( i# H
while[ l < people ]
2 p. ^; @* z. |( U& 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
0 Q* {. ~5 @2 r; ?$ l9 o' V8 n[5 h2 H  T" O, ]9 l, j# y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' y% x" s7 ?! n, Cif (trade-record-one-j-l-len > 3)
0 a' e' J( ^! Q  x. s[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
- s' Q. Q+ Y% R' j. [, v$ V6 {let i 3/ O+ Y1 R# {4 m  l2 G) X0 _  L
let sum-time 0
+ R6 b! u- y, A+ i6 p; Nwhile[i < trade-record-one-len]) O& D: ^8 g7 m% v# [
[
, _! ^6 S0 [1 l. a+ J7 Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 [, d' I1 o6 Wset i3 a# @% k3 m$ J) |0 d
( i + 1)

4 S9 t0 U8 |- y( H  e]
5 R6 b& o# d8 O  X6 M; Ylet credibility-i-j-l 0
0 c6 B# F) @0 O! v" F; f;;i
评价(jjl的评价)
2 `* a: Q- i) S, ^) clet j 3
5 ^0 b; a$ I! C5 Zlet k 4
9 X. N# A6 _: Awhile[j < trade-record-one-len]
5 g4 D) G8 Q, h& T5 |! N[
, S% W+ Y4 |: [5 D9 z! Fwhile [((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
% Z) S. G" @$ K) W. e- tset 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)* P2 A, D4 R( O' r  E8 N8 z0 G
set j
" |4 }7 _* l" R( R$ ^( j + 1)
! y, E2 C  r- O7 y
]
2 n, l7 g# T/ }- q- xset [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 ))
8 m4 y; }1 y$ b- q! b
& E. i6 Y$ M: T4 ^- K

) l; ~2 D6 ~, i$ A) Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  @% v1 p% O! j1 E;;
及时更新il的评价质量的评价" a; J/ c/ ]2 @( C  z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# y2 Y  S5 W' G/ V2 Q4 v+ ]set l (l + 1)
0 a2 h8 Y1 [9 F+ y4 k]
9 M4 T% Y3 D' X* A  ]# Y4 qend# j, J8 ?5 G% p( N

7 t& k" \) x! d: O# Tto update-credibility-list
2 N/ ?  d9 k) A; [, ]let i 0- A9 H$ Y6 I* B$ N2 J! c& k
while[i < people]# K; x3 l- l8 F8 W
[1 ~6 A& D0 x! s) Q8 u# o
let j 0: ]/ y/ @  ?4 c- b' H/ l
let note 02 s. E3 M' E& C% J
let k 0! U' I+ r! R! D6 `) g
;;
计作出过评价的邻居节点的数目
* g6 c4 E9 Q6 b0 K9 Q$ ]while[j < people]' U# c$ L  B8 `, b3 k& r8 O
[! {) B, B5 y' ^; o' M
if (item j( [credibility] of turtle (i + 1)) != -1)
( P3 \. s/ g! p- h# l. N. j  d;;
判断是否给本turtle的评价质量做出过评价的节点$ Q- m! y& `. e! d
[set note (note + item j ([credibility]of turtle (i + 1)))9 i. |" Y- U  f! f
;;*(exp (-(people - 2)))/(people - 2))]

* ]$ d9 k. [' S+ _2 c$ Yset k (k + 1)
- R& `+ D5 B* }]! k. K# e- Z2 F+ p  S
set j (j + 1)
+ A2 v- O# l- y* D! h% A! Y]  T3 Y0 W2 i- r' r7 U
set note (note *(exp (- (1 / k)))/ k)' T' {& B. L* K; b" @" q7 |
set credibility-list (replace-item i credibility-list note)
! W; m; e( {' j& j+ d1 W, gset i (i + 1)
% R' L. k0 s' E8 w) I- `* u  U' `]( [3 r' J& u. C" g+ m8 }# e
end
& T; N  e  y. B+ x
/ j" o4 V: U. F+ {  C8 [to update-global-reputation-list
- m, n  N9 ]% }7 a; rlet j 00 v- R/ ?! }3 D- ^; F/ s! z
while[j < people]
# V, H, M7 w: l$ q- y2 X! r, `[
7 U4 O6 Y9 A) y7 T# |let new 05 y9 [3 y6 _8 _! n3 _
;;
暂存新的一个全局声誉# G, ~6 l, A" ~; P  ]$ a$ p
let i 0' G( e( Y3 S5 r& x
let sum-money 0) W2 Q5 D5 p0 z! c
let credibility-money 0# X, y2 d, t2 X* T- z% @. f- K
while [i < people]
, n- f! u( x. k[
$ Q0 {) H5 {1 q8 k! D3 xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. z- m. V( p' Z9 J& mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  D- O, h9 A' |set i (i + 1)
$ E) b) @  X$ \; H! v% U/ }]
0 s4 C1 f% @4 m: f: ?let k 0, _5 P7 `* o1 v! G
let new1 0
& ?# u, Y- P4 V. L3 P- Vwhile [k < people]
9 P1 V6 X$ I5 ~- b) w; U[# J, m1 X- O) M& p; K0 e8 `
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) m% J* ^" h; _5 tset k (k + 1)4 I5 d; c: p, |6 [& C- k) k5 c  Q, G
]( ^3 e9 r; E4 v3 X! u0 s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 V( {4 x1 w! `) ]+ U
set global-reputation-list (replace-item j global-reputation-list new)
& {/ S9 C. v+ \0 I  Pset j (j + 1)
+ w7 i- `) Z9 G6 {: G8 O, F]/ h  a  y( \2 F1 l# c
end4 |2 o3 ]2 i3 j
5 ]5 r/ k8 B7 |7 \, L
' _* a7 k) ~) O4 [2 P
5 d, x# ^$ X: N1 |: B
to get-color
( @) n( P9 P# h1 B# p
! F+ Z# ~# G' }set color blue
; X1 ?8 j) c9 K" D4 j( q
end. v8 Z' v( J- D

6 i. y- F1 v' O/ U2 ?$ [$ K. Kto poll-class9 z% R" `) a4 m6 O6 s( D( I, A
end3 }6 t; v/ l9 W1 ?2 o' n1 M- [, U
2 n  n0 S0 e% F+ H  D  |
to setup-plot1
5 V4 }' P( }# Y' `: C; x7 r. ]+ H4 L* }/ p
set-current-plot "Trends-of-Local-reputation"

3 U6 Z4 d, c- ^* f0 c
$ z% l: p; y% `2 Jset-plot-x-range 0 xmax

& U& c1 |, c% k+ b) u* K( N
4 v5 b) ]4 I- f+ y" q# J1 [! Sset-plot-y-range 0.0 ymax
1 F9 u! S9 H! S+ ]  A
end2 ^. U# u$ Y0 O
+ N7 ?0 c1 r9 d/ F. d6 ]
to setup-plot2
9 |% x( l: [! V) i4 Q% y& }8 F# A; A. u  w* D5 M  ^
set-current-plot "Trends-of-global-reputation"
0 E) A0 J& o2 n! C/ ^5 i

1 M/ B1 v1 ]* s& P( f8 B$ p1 Hset-plot-x-range 0 xmax
* e% T* c9 r4 c/ _8 `

# c4 N' O# ~& R" d! o- Y% y6 lset-plot-y-range 0.0 ymax
; _! \2 T3 K0 x7 R" `/ I& a
end
/ G5 g/ P0 _& x* @2 T, y- }& H. U' ~$ s" K! j
to setup-plot3
) a  e8 e2 O2 C$ \/ ?2 I% h
$ ^4 p6 {2 `% aset-current-plot "Trends-of-credibility"
! B9 k0 E2 W2 y, p7 ^: S8 ]

7 r" u0 D& c. q$ f& T) i) C/ G1 gset-plot-x-range 0 xmax

  y& z( {4 b% e; M9 Z/ G, K
& E- Y0 k0 |8 xset-plot-y-range 0.0 ymax
. e/ J% j. C( {- P3 U2 ?) n
end
. @. F$ P5 o2 G: k" d# a
. @' l/ L2 |% L/ D# Ito do-plots8 ^0 K% V& T, Z* Z+ k
set-current-plot "Trends-of-Local-reputation") `" t4 P5 o/ D
set-current-plot-pen "Honest service"
! C2 i# F5 s6 v1 w- Hend
6 z' D) A1 T. b8 m5 T2 I
: D; y, [+ G. H' E1 t+ U8 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.
1 d9 @4 p" Z; l, p% N, c: R6 `3 B* l7 C6 s1 s' b/ b: T
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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