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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:
2 S5 b  x9 ?  o/ @5 w6 a! `to do-business & R( m8 C* a5 [
rt random 360; \  p/ s) g$ P# r" O1 H! d5 C
fd 1& k; @( t' |7 I* n) i# N/ h
ifelse(other turtles-here != nobody)[" o& B% p- ~, I% Z/ ^
   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.
' K# o/ C( V6 g* b$ s" m" ]3 J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + k+ \: X  G" _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 i% c$ X4 j) |2 ^
   set [trade-record-one-len] of self length [trade-record-one] of self+ P/ S' z, d8 G, H: q1 [' U  X
   set trade-record-current( list (timer) (random money-upper-limit))
0 h7 P4 O1 E8 Y& [. B9 ^) P! i/ R/ Y: Q) F% a  ~
问题的提示如下:) r& V* T4 p# F) ]
' O* A' l2 ]- r$ L
error while turtle 50 running OF in procedure DO-BUSINESS% q8 p, ]# g( ~. p' a: L2 r# j
  called by procedure GO7 r4 w: _9 L3 q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 k! o. N* o5 w
(halted running of go)% t- }6 T3 r3 a

, E* j3 c% _; w; F* G9 A% h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~~
. E2 V/ y6 p' b4 F5 k% I' r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
  N% n5 @5 z9 I, N2 e. hglobals[: C, Z2 z/ k  `7 {. U
xmax
" ?6 j+ v( Q8 f/ c$ @$ T' Symax
6 ~8 ^! [5 H/ t; n* n9 R2 Vglobal-reputation-list0 s8 ?& E8 W8 C) c% F1 [$ Z* ^
3 |! G6 ^* \: R$ l1 B
;;
每一个turtle的全局声誉都存在此LIST3 {# q& V: b0 K) a( c
credibility-list, m- X7 G6 f  @  r7 B) A
;;
每一个turtle的评价可信度
( t! C; Q, @+ b% T- Y) Xhonest-service
3 C: T! g7 T2 T$ \unhonest-service
3 R7 y* h/ j4 p4 t+ h! V4 ]oscillation
# f/ e1 K  {: `rand-dynamic
7 J- O, s8 Q( q, Q' V! g]
  e& P* ~0 o6 {; D' B( }5 ^2 o, ~2 o: n9 q1 j4 z1 z8 B0 U) \" `
turtles-own[9 ^8 I3 u, K( |' J1 E0 l
trade-record-all
* ~, L" c+ C  @8 ^5 `' Z;;a list of lists,
trade-record-one组成
" p' F! Z/ a) g8 v, Jtrade-record-one: b6 Z6 g2 l( m9 U5 r5 o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, d0 @. z1 o9 G: U6 @
: r% R/ i- V, _$ B  \;;[
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]]
, k1 {. Y5 l4 Strade-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]7 _% T# S/ h- x3 F! Y) l
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
" K8 B! u$ `6 x# e0 u; I3 Wneighbor-total
% M  F+ e+ e" p' F* S;;
记录该turtle的邻居节点的数目
# ^$ ^) l# o: S! ctrade-time
' U0 t1 Y- U  \# f" a;;
当前发生交易的turtle的交易时间! g. g0 G% I/ O& G/ J
appraise-give3 V/ N; F/ c; P$ q+ ^1 S# p
;;
当前发生交易时给出的评价
) R* }9 O% `4 m+ T1 f8 J; xappraise-receive) n2 \  T5 l; Y7 t
;;
当前发生交易时收到的评价- X% ?: R" v8 B
appraise-time" h, U/ U9 h8 Z  l
;;
当前发生交易时的评价时间
+ z" n5 X1 E1 w! K; L' y5 G2 Ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ p# U+ r& }- @& U2 w
trade-times-total
- `$ e: B7 U, F  Z( e;;
与当前turtle的交易总次数
' k6 V* r8 U- u# ~6 X! i% Ntrade-money-total- m1 I+ z2 g1 X
;;
与当前turtle的交易总金额3 ]: ?4 _# ?3 q. g" X* h% y
local-reputation. }- R+ }; r- y$ ~
global-reputation
3 p) @+ F/ Q4 x0 S& a9 ?  f+ Xcredibility
$ ~$ Q( @# a  |;;
评价可信度,每次交易后都需要更新. H4 T7 I3 e8 u1 E7 g
credibility-all* e8 P) I( N8 [- {
;;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5 i. r3 r7 }9 K( `: s

" i) L9 O/ h  G0 n" W  g  R;;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* P/ e4 K, E; @+ t* V2 J! F' [2 M
credibility-one
$ d$ [0 a! s& u;;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/ G5 o; q3 Z6 b7 D7 R
global-proportion" Q' k9 z6 j7 n
customer# C, U0 s7 F9 A3 |6 V. E" U
customer-no
* q9 V7 s$ d! L2 K# l1 F" _1 ktrust-ok0 @& N6 V$ }8 a7 L% Q( u
trade-record-one-len;;trade-record-one的长度
0 [4 U1 E) l8 k* R) Z  q]
( A8 |' w- h4 q+ d% J1 Q" d
6 W' M/ [. W$ T2 w- a;;setup procedure
" N. L! Q8 I6 u& n0 V/ K
$ f, q& U* P' G- w5 ^# [$ Cto setup' Q0 ?( s* W  _& X# a5 q
: q$ p0 p7 p5 w8 \3 ]
ca
7 M. H" V2 U5 p. V

. Q2 G7 c# \1 M( H" {# [; L, C: Linitialize-settings

7 \0 V& j; j! A6 e
- }7 K7 }& B8 s# n" s. @crt people [setup-turtles]

8 d( _4 B3 w* k: B1 x$ \' a6 n' q7 p7 Y* ?
reset-timer

" W* f8 L* _) L# W5 t. Z- ~% ]5 d' {" z- @7 s2 F  @& O, F
poll-class

9 g& w9 Y" K" l# m( l
/ d( |+ j5 r: i) ]0 R7 qsetup-plots

2 B# V9 m$ P% g3 a5 E6 R
( e% Z  N3 D6 n. ydo-plots
& S  j. z( G& P8 X% P7 }# f% _  N9 Z+ o
end
+ G; m: _+ n/ R+ d2 J3 n  s
2 K9 S6 D2 d9 O4 g) ato initialize-settings
6 X* R/ P) ]: J) C8 X7 Z6 F' k$ F8 w7 E9 V/ D$ V5 ~: a' ~" y
set global-reputation-list []

( r9 ^, t2 Q* k6 ~( v0 U+ ^4 z9 c' |* [0 }
set credibility-list n-values people [0.5]
: C1 M) P, |  Y( V" ^4 H

, R* W  i! f8 J( aset honest-service 0

$ L' |0 `0 T+ q! h
( S4 }9 x1 s: X! L, Hset unhonest-service 0

" T, L0 e7 d, v' b& c: E
9 S0 D* q% O* Q8 E2 L; d5 cset oscillation 0
$ Z! D" R$ d9 k% k8 g3 |; O

9 ?: _7 V7 X8 I# K& p& l2 @set rand-dynamic 0
) K) A. Q" h% N/ z) {# S
end* _% t6 X, v2 _: p8 X

% U9 J% l2 I3 y2 Q) \to setup-turtles $ W) g0 M. a+ L' m
set shape "person"
1 [4 h/ Y, J" @6 u0 \7 h7 J1 asetxy random-xcor random-ycor! v& d) ^4 N6 o7 a4 n' t
set trade-record-one []
( q3 e" Q' G* L3 s) |' Z
) `, C' t. f# C7 Z& {3 Q: y
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 ?6 \4 b1 t: j: g+ r# Z! o2 z
0 U+ }" Y1 Q+ \8 f7 T
set trade-record-current []( m# y; u( h8 f8 g+ t
set credibility-receive []
7 c9 X* {3 p& Jset local-reputation 0.5
1 k( y7 v) ?* j# a  R0 Rset neighbor-total 0
4 x0 @1 s8 }; W' H2 V3 F3 t* vset trade-times-total 0
( j3 q% i4 {" M% J7 T* m0 f' gset trade-money-total 0- `: F+ ?5 l6 w4 d8 A8 `/ b
set customer nobody9 r3 ~) k# t0 C# |
set credibility-all n-values people [creat-credibility]! A* B& s, }$ I4 ^, p
set credibility n-values people [-1]% O+ c' i3 r3 \* H$ H
get-color
  d5 D1 ?7 |/ |2 A$ {& D! ]1 j* f
. {  ~8 B# |0 s6 k
end4 B0 W/ x+ n; S$ D5 e% A# p
+ ^2 S$ V+ y+ d- k+ j
to-report creat-credibility) H$ m% d4 q, a) P2 q. g
report n-values people [0.5]
& E0 r$ ]9 W; [% m8 u# Send
: X; N3 n  Z% _, c% m: ^6 B* {$ @+ B6 I4 b! q  }' ~" Y0 _4 K
to setup-plots
; @1 V- [, K; P' {- Q' I" a! u  W3 K4 A# V! Y4 c2 f% ]+ }
set xmax 30
$ M" G# A; s5 [# \2 j4 L

6 X6 n7 W4 t1 [; C$ }set ymax 1.0

: h2 P% m& A$ B& a& E: t7 h
) i  X& G+ @- U5 b" Z2 {' }* ~  Tclear-all-plots

/ A6 G% M; ~8 X9 p
" k( o1 T3 r' f) P5 Lsetup-plot1

2 Y( K- n4 s+ ]- U/ E+ @6 p- _" j5 z5 }, z7 o
setup-plot2

2 }. M' r/ J8 q
4 o2 A$ f$ q7 o* Z! [6 y; ~  tsetup-plot3

0 H5 L0 S# }6 r# |( P# \- W+ gend
2 d1 v: ^& ^8 Z3 g4 x0 {
- J( \: ?* Y4 c; M4 I" i% B;;run time procedures0 Y3 _* P& W. X, Z: g! N6 e
9 R/ r; T( J) |7 |7 @! Q$ j
to go% }( [+ L5 s. C3 Y- n6 j$ A  ~+ E
. g% f$ X8 W' O& X8 k: W- }
ask turtles [do-business]

) X6 x* d' P1 }3 fend2 y, C1 b6 b. S* D) o; c- c2 A* i

3 }+ @9 e7 v! A! Y' Z/ i& q# qto do-business : E# z; T! f/ O& ~: c4 P( e2 K
' a8 ]' y" |! Y. d- j% s2 u

$ F7 D& H0 m+ ^) yrt random 360
: N+ C: I$ U9 t0 K. w5 q
6 E: T' M" _' S6 r
fd 1

- n$ w( `1 w7 U7 A2 T, q  }) J. r. G7 i9 Z
ifelse(other turtles-here != nobody)[

; ]- I  G3 n! C/ b, v; M6 H8 K+ h
set customer one-of other turtles-here

: E. D' ]7 t7 Q# t7 o& t$ L( D9 j& {
;; set [customer] of customer myself
, p& @! k$ |4 C9 \% \8 e

! X9 D# P/ L2 Y" l3 X* T  S* xset [trade-record-one] of self item (([who] of customer) - 1)
* X+ n! R3 F& o+ L: q; d5 F6 v[trade-record-all]of self
. _3 u* }. F% w  o" c, E* \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 Y6 J! ?/ W( P# F. @5 g1 }4 W2 v/ \/ A0 o1 L
set [trade-record-one] of customer item (([who] of self) - 1)1 s( }+ d7 P( r$ _7 v' X% n
[trade-record-all]of customer

4 i: L$ Z9 ]. X8 Y, u3 c& E' s* A5 ~3 q0 K
set [trade-record-one-len] of self length [trade-record-one] of self

. p1 A: s6 }- a5 `( G
: t4 w# U; G' L7 }# {set trade-record-current( list (timer) (random money-upper-limit))

; H% V& C' ]4 n! C' F4 o) r+ |, b' x1 x& E1 a
ask self [do-trust]
7 Y" m2 b  Z0 m1 a6 [2 q;;
先求ij的信任度
+ m7 f0 s% H! o- c. n8 w  l5 `7 \6 W2 K3 }
if ([trust-ok] of self)/ B: j: L# s7 N% \% y' g; e/ f
;;
根据ij的信任度来决定是否与j进行交易[
: B* U1 b8 p7 G. u$ Y- Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 \5 a3 l7 [+ ~

" A  |$ l* x, o+ \7 B0 q8 r# v1 `[
! s+ y+ Y2 {% _/ D; S  _
! m% I5 Q3 A9 H
do-trade

8 r3 I* U: C2 `% |7 D
! [, s5 J1 m8 z! Supdate-credibility-ijl

. |7 j( G5 a: v& g0 ~; ~
7 k4 R" B  T3 i( w& d( Q# g0 Supdate-credibility-list
' I" p: r; x6 f# H  b) S0 z% R" E

  ~/ W) ~- z& _& B& r7 \/ G- W" Q4 Y0 O
update-global-reputation-list

, C8 _2 t: x* R/ {& H
' ^6 T7 {' J  X9 bpoll-class

/ l0 l. ?3 I. t4 M1 u! v2 Y4 I9 G; m4 g2 P- q& s' j1 G
get-color

5 R1 ?; Z- @$ \. T5 c1 U& q" F/ i
]]0 ^2 b( l2 K* {+ q$ L) j8 v
% ~4 z. x4 g* A2 A
;;
如果所得的信任度满足条件,则进行交易8 y; F9 o; [0 u1 Z6 n8 ^. W' Q
# O7 Z" O$ n6 I  |6 x
[

# q8 a$ H) |; ~, h9 P  K' |8 \: b2 M: v5 f( _8 ^' l
rt random 360
6 W; Y1 X( t/ S7 L

& P+ d/ A. x- M! q: m6 ]/ Wfd 1
$ E" Q* V  g/ g8 {  |( H
! x$ ]: ?& ?; U( Y2 T7 _+ t
]

# W% j; I  j1 H( g3 \# r6 O
3 @$ ^3 |) S( {* e7 V* nend
2 ^1 w8 I# |+ |8 l
7 A& I' s* c7 a  H5 p
to do-trust / g0 f  S" G  y4 }4 R0 M2 I% J
set trust-ok False) E. ~! ?+ q/ \+ B! O5 w( p) [

3 j7 d1 G9 u5 p  B) u

( S0 k7 `( [7 U* h) k/ xlet max-trade-times 0
4 z7 h" J/ G- x; e, ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ r/ [2 r" ^5 q% u! zlet max-trade-money 0
4 _% `- F2 G) w! d2 \foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 Q) O( J2 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)), V3 M0 O* ~5 B7 j2 f" ]8 O7 [9 D. M
5 N4 k5 [6 W; y9 Z3 _

0 A# f; Q! t7 cget-global-proportion+ u, v3 r! @. G
let trust-value
) _3 ?& f6 W" g+ q* flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

; ?( R' r/ Z+ y" _! x& gif(trust-value > trade-trust-value)
/ w* J  Q) M/ H' p, f# A0 L/ H[set trust-ok true], V4 K  ]& B! |: {4 W7 |
end+ `2 {* B5 [( h0 ~4 [. i
) U, |% C& f/ h  b
to get-global-proportion. r8 Q& p* m( q* i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 L5 F7 B$ F+ p$ U- }0 s) N/ F, F; I[set global-proportion 0]( s2 H* w9 u. f+ Y8 e
[let i 0
% F. k$ m& j0 Hlet sum-money 0
; T, N( ^+ S4 a0 ^while[ i < people]# ?) q/ b' Y/ K7 B- b
[: H- M$ ]7 T2 _1 m* G. d
if( length (item i
3 `3 W. i$ y' O( ]' i/ _: s[trade-record-all] of customer) > 3 )

  @3 `8 {1 `  i  S5 I1 ^/ p& {: m[
' b# y+ d1 e% W$ B& M% kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! K' x+ I6 J  r; I6 `]+ E9 W& E# K7 ^9 U9 Q
]1 o- S5 Q) V" I+ L1 F; [: @
let j 0" [/ C1 @9 c# k. K* G
let note 0
1 x7 s+ z7 a) B" i, `4 B: Swhile[ j < people]" b: p; u1 M8 i4 d& r' z6 i7 s
[, g1 p" |7 i) o" ]( k
if( length (item i. s7 D5 l+ d% ~, z9 q+ v$ W, D
[trade-record-all] of customer) > 3 )
* L, {" G( f9 k1 g  L
[6 c/ J' W% P/ e$ X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) U2 y. y0 ]# W* _/ U
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 V! B8 I/ u9 L$ R& Q) d6 O0 R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 f. g$ s( b* d  F, x; U0 `7 K9 E
]5 K* ?3 _# \% T
]& Y. E3 o+ I' Y2 o7 p
set global-proportion note8 x; z/ Q$ ?' t: N
]. E. ~( s) e( J) T% G
end
2 b0 ^) ^  L0 l  ^+ p; H1 P' I- E0 H, T
to do-trade9 \) i% C+ j; _# p2 C9 A+ A
;;
这个过程实际上是给双方作出评价的过程
. S6 ^* C( D8 j. \; N+ T3 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) q9 a- y( t# P- h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, Q  |# T( t2 R5 X3 V0 n' L6 o
set trade-record-current lput(timer) trade-record-current
+ l# j0 g/ A% C* o3 g;;
评价时间
' @/ w0 }0 w1 Y6 jask myself [
5 T2 l" S' |8 cupdate-local-reputation& }6 g2 z, q% }" f; K
set trade-record-current lput([local-reputation] of myself) trade-record-current- ]$ e/ G- {* ~& q" n1 M5 f5 X
]: ^8 q7 f( k4 v
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* s$ J9 M6 I* W4 W% z% l2 {;;
将此次交易的记录加入到trade-record-one
9 z; G# n" S- _' Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; y- ~1 q' i* W" c6 n; Vlet note (item 2 trade-record-current )
- f- ]1 B: N( r: G- fset trade-record-current
9 w* @9 s/ Q8 |1 w6 y1 j(replace-item 2 trade-record-current (item 3 trade-record-current))
2 m8 F$ D, ~/ z/ ?! c- L% Z# S& R
set trade-record-current
& q1 @3 b* R& \4 Y, h+ j1 G(replace-item 3 trade-record-current note)
- c6 e* Q/ o, E: f% t6 r
/ f! N, D! z2 r2 I+ ]2 E
  `: Y, H: b5 g! B2 C
ask customer [
9 ?3 x' P' n9 z  }2 W; s; zupdate-local-reputation
) y8 |( Y# j4 q& T' l- `set trade-record-current
% R$ X" b7 ]' M9 ?) Q2 J# |1 ~(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; B1 y& S8 j& O$ z+ M3 h- C]
* H/ D3 q- v# w( s! o
7 N% n% T* K8 ^, M: Z4 C* K" ^

# B$ J* j. H/ j0 c# t9 Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 T* H0 C- v/ Q2 O$ ~: e$ U

5 F' s9 D  R; r5 u5 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 N3 u, G) k5 J* J! v% b5 @;;
将此次交易的记录加入到customertrade-record-all
! O, f9 n# z; C) }end+ f6 H: i: b2 ]+ u5 S

1 ?; D- _" ^% Cto update-local-reputation- S2 a( r: O) O- |
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ m9 c9 p. `7 H; ~6 A+ c; z$ x
5 _& i$ u) e$ |2 F! g* `- L
9 ?2 h  M3 g- g& s# u1 V1 u: I( x;;if [trade-record-one-len] of myself > 3
: a4 ^0 `2 ~' \' _
update-neighbor-total
3 z1 e, f$ j9 B6 v; T" J;;
更新邻居节点的数目,在此进行4 G2 u9 Z& v$ N& Y! v! ]
let i 3; Z  O6 T/ t9 |9 `( x
let sum-time 0
! a9 f0 p8 t9 {( |while[i < [trade-record-one-len] of myself]
3 W1 z7 \. `4 x0 N0 O1 ?2 g[. `, ~. O) m0 i" x) l- D) a) G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( L  N  ]( q) n0 {2 jset i, F! a3 E5 j) V, g. y3 Q  V& }+ m7 W6 K
( i + 1)

9 N, [+ K6 _; {/ t]
, n0 ?# n1 y/ h$ I2 m6 ~4 Olet j 3$ h; p1 M4 Y/ R9 y6 y- g
let sum-money 08 v% E- t2 P8 C% R' l4 X3 p2 a4 R  W' G
while[j < [trade-record-one-len] of myself]
* n7 U2 {- j+ O7 O1 q( r# w[2 f7 b. W0 v3 X* M( ]  Y7 i) u+ i
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)8 E% b! M1 W* D& q+ x, d# D5 c
set j: r) Y# h8 E' ~: ^+ v# v; G+ S
( j + 1)
  z3 _: Z  l+ F9 p- v
]" b$ ?) J2 k0 }1 C
let k 3
! k6 N4 r, i$ L' L* C; T3 v) H5 Glet power 0( }7 B" w8 G6 X4 h+ x. U
let local 0
; K7 e9 ~. C, P6 E* A2 g1 fwhile [k <[trade-record-one-len] of myself]3 D7 Y& O6 [! p1 |7 h+ h
[
3 y1 V" Z2 }- z6 o8 N( L# tset 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)
7 p/ {+ N8 D6 X! fset k (k + 1)
3 Q5 Z1 c% R( ?/ O% k7 k- W]6 `4 h/ q+ w# D. i) g# ]
set [local-reputation] of myself (local)
$ B2 B+ @5 J% ]( U4 ?" U4 M& d) xend
$ c4 ^$ c7 q0 |% A9 _! K( w; ]; G6 `7 X+ E* i9 w( `6 i- J$ @
to update-neighbor-total/ U; x9 \! k; y5 p! q+ d
. b, x6 ?5 `' H  J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* y# b) M7 z# D! e; w. v9 t% U. O

/ u9 b. I5 q' ]8 a! [+ @; Q$ X

3 a: F, v5 @% W9 g* A& Dend* Q3 x+ A- F0 }# o3 g: f

( h+ Y4 x2 i0 hto update-credibility-ijl
& f6 g) j3 I* C. w2 i3 y1 y5 d# d) B, q
6 T# ~4 n$ \8 H7 O" o, t% [( d% l;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
: G9 U3 z; Y: L; P3 O/ }& Olet l 0
4 J( x% D0 b4 P3 ~while[ l < people ]
" r/ @, H0 k. K( ?& w;;
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 H+ x! C. o/ @4 j( ]' ~
[* p: ]4 z* y. w+ o8 C( C$ w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" l# |3 Y2 \& p$ ~" x! bif (trade-record-one-j-l-len > 3)
8 M( S: q) n' m9 i3 P7 y  o[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-one0 u! \# E0 ?4 Q  Z9 K2 b" F
let i 3
+ s. c. ?9 _- x8 p* |let sum-time 0
* d- M% c' ?# @) u+ o, V  fwhile[i < trade-record-one-len]9 m  K+ I) \1 i$ r- Q& P% ^2 W
[
3 r- h# v) |# L9 d& m  ?4 ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ W/ p6 \: s. `2 V0 }$ w
set i
$ i2 k6 H+ \9 c9 q( i + 1)

+ I3 {( L, h6 O1 J5 d; Y]; U$ S# t3 s% W
let credibility-i-j-l 0
+ V7 ]/ L3 }1 F6 b! B;;i
评价(jjl的评价)
4 y3 Q3 G( x: W5 l2 olet j 3
) r7 a. Z/ T' o  Z, P# E! qlet k 4
& v3 c( ]9 V6 O! Kwhile[j < trade-record-one-len]% I4 ], Z: |+ c! m% ?, r
[
  Q7 ?$ x- W: |, 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( f" E1 y- T+ O! T5 c/ y, h) h/ X( y' Y
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)3 S; ]* d1 n# f
set j2 V' x; d' [4 `# N
( j + 1)

  `4 L) v. n" ?* V]
4 r* M4 j4 w* N1 Zset [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 ))
1 I! J% j5 B$ H1 d. @5 ?$ x2 b
  p0 C/ t3 j8 Q$ `
# a' _( ~& t0 K/ {; l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 J4 d( r% w# X  d2 B0 l9 U- a/ v8 W  h
;;
及时更新il的评价质量的评价3 E% w5 |) d, }% N; K- M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  C" p# G$ [$ r/ n4 ?  `
set l (l + 1)$ s8 ^# X. }8 q/ _
]
1 C6 l: ]5 ^# A) send
+ L% D/ t4 x9 `+ _, [/ W, }5 N; Z- a$ X3 {& L; w1 g! q' M# B/ X8 E
to update-credibility-list  |4 r6 {# v8 k7 H9 }
let i 0
6 _7 N& Z  s( Y& M0 I2 Cwhile[i < people]7 n4 Z, r( m5 V3 A* Q- p5 F$ N
[; P) c, v" l4 N' d3 C  h
let j 0
& |% j3 \+ a1 w' Y1 |" Llet note 0
' m- Q, D" ]6 T3 Jlet k 0
7 b* o. J: [7 ?' \' U- y;;
计作出过评价的邻居节点的数目; f- z' `- q5 O: l
while[j < people]6 B" c/ T% b! O% F# \4 l! w: M
[
4 l' _+ j- t% T; kif (item j( [credibility] of turtle (i + 1)) != -1)
- q1 p2 [( z) S$ ?: U;;
判断是否给本turtle的评价质量做出过评价的节点
0 q& {; [7 q' K8 d; q$ k! f[set note (note + item j ([credibility]of turtle (i + 1)))7 M2 }2 N8 c# d5 Q: u
;;*(exp (-(people - 2)))/(people - 2))]
& L" {# Y3 e% ]  c. l, I; \
set k (k + 1)
  N. ]% v8 J+ r2 o! f7 R& e]* N$ \" l6 \& f! H) m' I! g" m6 D
set j (j + 1)# N0 r" s, c! X
]. F7 R. `. I, L2 D0 a- u
set note (note *(exp (- (1 / k)))/ k)3 c0 P2 N$ p* D8 g
set credibility-list (replace-item i credibility-list note)
5 g3 b: O8 J) X* Bset i (i + 1)( f! b- i  j" h
]
; b3 w% I9 Q( t4 [end
+ A% ^7 v' X1 R2 a2 q& c7 C0 L1 f" I  }( l6 q/ z  y
to update-global-reputation-list
5 q) s: J+ p$ s- g  `5 alet j 0/ D. W7 G$ F: a$ Y* S7 y! |
while[j < people]& G. A& x8 q1 R! x) }  y& Y
[
) U8 A; q$ z! P# J1 J% Jlet new 0, q4 S) [% D4 y  h( e6 Z/ ~
;;
暂存新的一个全局声誉, o3 a( J, X' q7 M9 D! Y: h$ `
let i 06 L8 m2 u' V6 j
let sum-money 01 @( ^% P3 L% Q5 J- I  ?: L! f
let credibility-money 0
- t; ?& k; L7 M7 |8 N- e, w* Swhile [i < people]
1 r0 o# H* t& v9 L) `/ Z0 w7 d[  Y6 ~8 C$ R% |' v* }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* F! E' C5 d7 R6 r" Z1 z: A* Q$ H7 G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 j8 N1 @1 [/ [* |# G; [
set i (i + 1)& o8 I/ o7 G% l+ I
]: u( X9 F% V" E
let k 0' B: ~+ n6 F, v  ]3 M$ A  I
let new1 0
. l+ y. q9 I, s& m' z5 K. [, gwhile [k < people]
$ ~; ^( N4 D' }% L2 _  b7 k$ j# i[
# C1 J& a1 G2 c. K# [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)( j" |  Y* O/ A' W( P) ]
set k (k + 1)/ i6 G# H- h, w0 V# ^4 _) m0 x
]4 u. _" a- x5 P  p7 ]7 T
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : F: M& u  r8 L2 z( ~
set global-reputation-list (replace-item j global-reputation-list new)" F  P5 z3 U5 a1 H: D1 U7 G6 w
set j (j + 1)* m2 K1 D2 Q& e: S; x
]! K2 `; w  O3 }" ?# `) Z5 E
end
. B5 \# ~+ w  |, Q7 C9 _4 j) g4 f( a# j0 w4 V2 h0 r: k

" X3 W9 L  l9 F. A4 p5 O! q" j# E( t: J
to get-color
: Z- u- [4 Q9 j6 Q: \: n5 J2 D
7 U8 f' g+ f0 H9 Z7 {set color blue
* K; h( w& U3 G0 @
end0 q9 t8 X0 R. Y) p2 g+ ]
/ ?5 M& H. a7 @% a
to poll-class1 C/ A( D* I0 q) |- B0 F
end- t4 `& q  K# z, K- K
( c( D! @0 \4 _+ h
to setup-plot1
4 l: l% [# r; a; V! L7 f) [( e1 `: y/ q4 @8 H; X2 z9 t
set-current-plot "Trends-of-Local-reputation"

$ q! u# X& k  Q8 }4 I; p/ }6 T$ T/ q0 N  ^6 a6 F3 `/ u
set-plot-x-range 0 xmax

: L" _9 M( `0 r: i$ R
3 M0 x( j$ ]: K* j( c  gset-plot-y-range 0.0 ymax

0 ?, N: m  @" {3 F/ P$ rend8 z4 M* d' A! l8 g& m( x

+ q5 y4 ~! p' h" ^to setup-plot2
; v! b- n- m* \3 s  `$ g* J2 Y9 @2 r! V( ~
set-current-plot "Trends-of-global-reputation"

: a5 f, v% U+ m  c; z' F  h& o" D( R% p7 Y7 j. c, g9 j* \9 F
set-plot-x-range 0 xmax

0 X) m) J) S% M% d  d. \/ r
8 g  n5 T% r2 U7 ^$ \! e4 G' Dset-plot-y-range 0.0 ymax

" ?4 X+ ^- y5 s/ v! R, X+ I& C3 Pend( w( f. K8 {' x( h

8 A2 |. u+ D& m7 I* |: {" x, Wto setup-plot3
' N3 \1 `: p, \+ e/ `! C3 |1 }! x% s4 |" q- C* e! Z, D5 q
set-current-plot "Trends-of-credibility"
# d8 S, S5 n: x# S  Q4 T
, D$ ~  i) }$ V
set-plot-x-range 0 xmax
: V# [; a$ d/ {8 G* l* f# ^$ h" a# f

$ ^: A* R- K2 t+ N: o2 t: w4 |set-plot-y-range 0.0 ymax

& F& w; E8 |+ jend
" B+ T8 M7 E& Y2 o1 `5 r$ p) B  m: G4 l1 ~6 J( w/ v0 w  e
to do-plots
. r8 [6 F0 N$ @set-current-plot "Trends-of-Local-reputation"6 m! V+ w2 }+ g5 x; O
set-current-plot-pen "Honest service". a% V8 e7 u: s8 `1 E
end9 L8 O+ w% f* K! d8 ?& _& Y! {  A+ \5 M
! c( E: P' V% S. [
[ 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.
) Z3 ]% h+ L1 g& k/ V0 d/ N
& {% v: y: t5 v  Z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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