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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:
- D) N$ m  _: F& g0 V2 [8 @$ Hto do-business 6 c0 z1 `% B1 u
rt random 360
; d) o4 `$ \3 K( x4 G5 k/ S fd 1
) b- n+ \/ X$ y( r ifelse(other turtles-here != nobody)[
0 z# h1 n. d' m/ |& r   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.& g4 R6 `& {6 H' k3 L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- d& B* `( N4 F# M# ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: B6 \( Z9 P" |6 T: |- R9 X
   set [trade-record-one-len] of self length [trade-record-one] of self  o7 `  u* r% ~
   set trade-record-current( list (timer) (random money-upper-limit))8 v+ E) E0 q7 a3 T4 @& E
" Y3 V* K# p! {- G& A  a+ D
问题的提示如下:
6 W3 B* i" X0 \$ f1 o! m5 B: x" j/ V9 e! `0 K) X+ R9 r3 {
error while turtle 50 running OF in procedure DO-BUSINESS( l8 e4 O" p% B) ]8 k
  called by procedure GO& {9 G. w  A& Y! R( p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* Q; j; D; a) B  W+ P
(halted running of go)
2 T4 A$ g- o% H+ `, ~
$ P9 v% T8 e* y( f9 w7 Q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~~
" I6 j$ @3 {; u/ x' S3 f8 n( X$ y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9 N4 H9 }- Y) V0 N8 n) x
globals[
( F& C/ n  k7 o: mxmax
4 q. ?+ Z+ C% |ymax
, V& g% L" F8 s1 m: d5 s/ k6 [global-reputation-list! @" d0 G, S. l. o( x, k

3 }# s9 q: T- _% l. S& l6 N;;
每一个turtle的全局声誉都存在此LIST
9 N& I8 _! @' X4 z4 {credibility-list
' }7 L" P7 j; n;;
每一个turtle的评价可信度- x! ^9 E7 u4 }
honest-service  ~2 ^, b4 o, H( D+ M7 \
unhonest-service5 g. c, L( ~0 |
oscillation
; M5 }, v/ b8 ^2 srand-dynamic
0 _5 o* I+ O$ H: h% _( F]
/ K3 V- c- E0 i9 N
+ Q, S: j3 r4 zturtles-own[
$ t0 U' H) G( q/ F$ p/ y0 T% Z2 |trade-record-all
) s7 [9 q7 r0 p;;a list of lists,
trade-record-one组成/ m# ^$ E$ P) z: z1 A$ a3 D
trade-record-one
% Y; E  ?! }% Z* S* V8 n! X. T0 ?; b;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! H8 a6 L1 S/ N; q7 R) c

* j. T1 Q# C  J! c( j;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
# p& p# l. p( U4 ytrade-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 L' @1 z( U5 g6 z" C
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* n$ Y: `9 O* r. v+ }; q3 O- x% l
neighbor-total7 Y2 @! r  L0 R/ D; Y
;;
记录该turtle的邻居节点的数目
) @8 E" r" Y; \* a1 htrade-time
* e6 O$ I/ m. v# O" Y, L% b;;
当前发生交易的turtle的交易时间
& K, E0 y% k8 x% wappraise-give
2 Z6 S. p6 q, v2 N% m. e& ~;;
当前发生交易时给出的评价! T+ Q$ ~( U8 X$ B& E
appraise-receive
1 q" ~: m0 G" }/ A; ~0 i;;
当前发生交易时收到的评价
3 {0 y0 K0 ]% Q" w' T! A, j& x3 Qappraise-time
! Q+ N0 b& @; R;;
当前发生交易时的评价时间( @9 a+ e5 B) M$ B" ~% u& h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* _/ X% z1 v! r' ?% E# Mtrade-times-total" l) q) R6 g/ g4 z
;;
与当前turtle的交易总次数3 q( R6 U/ k6 r; L% s% L/ h
trade-money-total/ n8 `9 g/ l* |* Z' o1 y
;;
与当前turtle的交易总金额
! e, w% }- G5 e' ?8 `local-reputation
" ^. a; V0 ]( i! iglobal-reputation* _2 B; {. @* [9 i& j
credibility; J# v" t- `9 b$ {; b* _8 s
;;
评价可信度,每次交易后都需要更新& C! y2 R& N# T8 W* m0 c" h
credibility-all
6 Z1 [, A9 q% W;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据0 e0 K! Y/ {6 s3 T

* N; q7 W' B2 X: I! E- ?  ?;;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0.56 A) E7 o5 `% H' ~& x$ I% |+ L
credibility-one" }  ?& `4 K9 H; `
;;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% H, z8 d2 C7 }$ H( X* x
global-proportion
1 X, m( K% w9 q2 j' `2 f" Hcustomer: P9 p( a' y% h" @3 h( x" J
customer-no
2 K- k3 y, h: S, Z) ytrust-ok
% D; k  Q% {3 W% _* S7 btrade-record-one-len;;trade-record-one的长度: e: ?( J  l' H: x
]
) g* O  f& y' h8 J3 u6 U- e& D
2 E( ^2 x5 [: w;;setup procedure6 m: V8 G- [* ?

8 h' v, z1 R+ T: Ito setup8 G% o! s3 G1 x. X# p( }9 J
2 B; P  _& M9 a  `& t
ca
( m6 Y- V+ `# |( M5 E$ |3 Z; e
; J' l/ |/ e. I* A2 T- Z9 l1 Y
initialize-settings

/ C+ ]4 R. ^+ V6 ]# B- g% ?7 P7 Z3 }) M* k
crt people [setup-turtles]
  }. ~- r$ `4 Z$ G
3 D' I7 v: G8 G' a' ?! r
reset-timer
' j/ Z( g. D3 V9 z  f

9 T3 _4 W' Y. M4 Y! J& \poll-class

. Y2 ~  O8 T* j$ C0 z6 Q+ Z% ?7 L/ h3 D0 J
setup-plots

5 g- h8 s; h9 n7 _1 U0 t
; y# [: t) W# _) ]/ ndo-plots
7 p! V3 t5 g5 `3 M. A1 g
end
3 e& r/ J, p- T+ t
7 l* t3 ~' S  V. w5 M+ J* A9 A& T+ U& Xto initialize-settings# \' c3 y8 _2 i9 z# b0 k0 I
9 m. G$ I4 v: _4 e
set global-reputation-list []
* E, W9 P0 D6 z' ^; o1 H* L* W: x; @
5 e8 A; O$ F: o3 i' Q
set credibility-list n-values people [0.5]
' K: m5 c4 W8 h1 ~

6 R6 J. E% L; p( cset honest-service 0
" ?5 A, P2 A  T/ D$ J, I; v
, E! u; I# X+ Q% a* P
set unhonest-service 0
7 r! k& N  H2 L, c; ^/ l, M

( U5 E( s  h7 T0 B" E% Mset oscillation 0

$ y! ?6 ~( B  O' f6 |, ]' J4 f4 p/ c) C: K5 S
set rand-dynamic 0

0 a2 w6 @, R9 v" l% p1 v# vend+ B4 l2 t' O6 l

) ]. [6 c5 f7 mto setup-turtles 7 d8 V% [) Z. i" f5 n6 j; ]
set shape "person") u) `' K3 {1 \7 a
setxy random-xcor random-ycor
3 h$ N8 d; J! z7 fset trade-record-one []5 g- v  P  `. ~4 Y$ @$ H& q

0 D) {" ?! G+ D$ @# A( M$ dset trade-record-all n-values people [(list (? + 1) 0 0)]
* H3 O& B9 Y8 Y( z4 N7 N* G# n
6 m0 Z# B( L8 f" U* [
set trade-record-current []5 Y" G& Q5 t* I0 T, }7 ]
set credibility-receive []
3 C. T# x  t9 Iset local-reputation 0.59 s$ x+ A/ b0 V- [' ?' J1 g6 ^
set neighbor-total 0
1 c/ U3 ^/ J; n" B0 Aset trade-times-total 01 v5 A/ o, e* x/ o* e) }3 m
set trade-money-total 0. o( T. K+ H! e2 E* P4 ~
set customer nobody& @9 v( t& Z' `* X7 e2 e
set credibility-all n-values people [creat-credibility], b! B: s) S1 J5 H  ]5 u) b- k2 }
set credibility n-values people [-1]
' [/ M& W4 E2 e) \9 tget-color6 C. S9 Y8 c, b
* ^0 ]! h% F: }9 K1 |6 E
end) a# V, P' h4 ~5 b. N( R
0 s* l. G; X# h# g+ P) B
to-report creat-credibility
5 w7 t/ W0 J( kreport n-values people [0.5]
# o5 r% @9 _8 G5 z4 j$ oend  N- F- X9 `( [1 Q5 u0 E

- w: X0 D/ T$ e: [to setup-plots
; y1 |2 m1 b4 C9 H1 F* t7 `6 S% u8 B. ?2 X) V( p! e
set xmax 30
" c$ n7 M; H4 y; Q9 T
9 r) @* T, \# F, r8 i8 {2 D* r
set ymax 1.0

  F$ Y2 s1 u2 B* J; Z
4 A- w# K1 h7 Q- V! k$ A5 [clear-all-plots
$ e7 U6 m! `* M# T7 l5 U

0 Y& M* E1 R+ _% x5 F* esetup-plot1

5 X$ C3 a# P+ S: V) |. s
/ x7 N# i( ], D6 F) q: xsetup-plot2

! H! `% i$ Z& ]5 W- s( W7 K1 _  i; q
setup-plot3
: B# o# |, c/ D/ o: h( v
end: e. C# s! Z' Z  u" p; r7 u
3 w7 @! @9 c. D5 \5 A0 P- o* I
;;run time procedures9 R- O: ?" t* W, V3 R! `& h

9 {5 C4 @! e" W/ n( L8 w. m+ J7 zto go
: i5 i3 L2 |" b
* \1 `& W6 l4 r4 E9 ~5 _& V; ]ask turtles [do-business]
+ d7 {; S  |: X2 x" d
end' Y# \; ]2 D: r
- f2 V0 Q% G) M6 B
to do-business
& T# o! a$ Y; t3 f+ J

% S4 Q1 j) I* `! r' o# j, d: Q- ^3 @  v5 q
rt random 360

; _! K/ I: ?) o- B0 m6 f. ]& a
  V+ F, `3 h- B' N, {6 b, Ffd 1

4 b+ B+ [8 Q; N( b! S8 ~" [5 n- P
ifelse(other turtles-here != nobody)[
) {5 N9 A3 _; w- n5 T1 Z3 z5 u

7 H$ u  T4 W. S$ [) eset customer one-of other turtles-here
, [. Q, _$ F+ ^* p8 o" Y2 o; C9 ?
% ^5 c7 z! e" T/ P4 c
;; set [customer] of customer myself
/ k% |. K, |5 Y4 q5 j5 w. l
; t0 y+ A; @$ m
set [trade-record-one] of self item (([who] of customer) - 1)8 B1 C; E4 N, E0 N, f3 r4 R1 W
[trade-record-all]of self; y% R* Q$ N* b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! v$ Y( }( l6 V6 ]% h% `6 c4 [% j, l! w* _: g* |% t* t) ?- V  l3 ^* t
set [trade-record-one] of customer item (([who] of self) - 1)6 E9 ?7 i5 \; _6 h
[trade-record-all]of customer
; `7 d: A9 ^- O, A
) D! X2 r+ I) W
set [trade-record-one-len] of self length [trade-record-one] of self
: D) _5 u0 c# i3 }, \" S, t

9 Q+ U2 P+ w! b4 o. m) N8 C0 `set trade-record-current( list (timer) (random money-upper-limit))
* g) p9 z5 q. M

* O) H2 p, _/ x- n. Aask self [do-trust]% Y" ?( O4 z* [: F. I  E" j3 \4 d9 }) [" r
;;
先求ij的信任度. h. w( s2 r% u; Q! P; M

5 H! p$ \% j; {+ T" e2 e, X  Y9 t0 [if ([trust-ok] of self)
9 i0 j/ K$ `  _3 j. e  F' S;;
根据ij的信任度来决定是否与j进行交易[: m* H2 J) o  b$ v' [- Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 G' j/ D. U) X5 o* p6 l; q( Y* V

. m% J" @% F  W. S4 e# G[

" w( F" P( K6 ~# a) [% T  i: ?, P  u+ z
do-trade

' b# p" A9 j) F5 a$ f7 J, ^0 k6 q3 k4 z# }) Y% m
update-credibility-ijl
$ l  v' W$ s' b. h8 p

) g7 k4 ]" X( u  Q$ Q& v( Xupdate-credibility-list( w" e" }( y3 S. |: u
2 u9 u" V% m& T. X

# ^5 u, @2 B$ y1 P/ q# v7 g$ Iupdate-global-reputation-list
" _: Z2 z& E5 ~7 q; m! J/ l

% s" [* E5 _( gpoll-class
0 H  V# y: j. T( l) R1 J, F
: O) ?/ y7 _' r1 B, X
get-color
& I. L0 P2 m, r* Q$ r0 O. K
. B( D7 ^+ A7 P1 R. E/ w
]]6 f- Z! Q( G/ W2 m6 }: H9 I; T- G
- \- C: t1 b1 X* {4 }0 P
;;
如果所得的信任度满足条件,则进行交易
0 T% i. U8 N4 B* W4 W9 V/ P" [' R8 p- C
[
/ Z2 U4 P! d# B7 H9 d

  O2 r& ?( V. J8 @4 m& O; Drt random 360

( E3 n* y. j/ k1 e" U- b4 C: ?( O  [& D/ e: t
fd 1

8 I3 B$ J) j- ^2 H: C4 ?: u# \, V$ j7 L9 _' S! P0 f* e/ [) W  C
]

+ Z9 }: B5 m! b# K: I, E# T9 U, M# s$ q7 o4 v# @
end
9 n4 W! E) _4 k! M0 Y+ L8 Z9 B! {0 C7 z! H
; x* y9 Y, M  s* I1 W
to do-trust 7 k& q: B( y; k! I9 W9 t
set trust-ok False2 H3 k: |  f/ E7 }; G6 W
, P; D" k7 x2 n+ o

. O9 n8 T% p. d& Y0 G: J( M' i1 {let max-trade-times 0
3 D3 c& \9 z* f3 U  w' Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' I2 ]" t3 M3 V3 g0 v2 xlet max-trade-money 05 b8 n! y: S; [) m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], S5 S- }: I8 p6 h$ D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), \: W$ Z, H7 w6 ^" g2 G

$ j/ @1 Q, f$ K1 V( u

! Q+ k: X2 P( \* o! Z3 f/ mget-global-proportion
% n# B6 S6 L" V' K6 I# Blet trust-value
8 W: D; d5 y5 Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ d- c8 {4 ?3 j( G* h3 L9 v
if(trust-value > trade-trust-value)
- ]* E' {+ [+ c8 E( u7 F9 [  s5 t[set trust-ok true]0 F. S" p4 y) M3 R  g
end
  J0 L4 `& d& i! }
- Q1 O5 a7 X6 q. \5 Jto get-global-proportion
% t- Q% _& S# eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( K- h( N2 ]4 M, ^$ G  ~
[set global-proportion 0]7 w8 J( t& A2 x7 X& h) v, n9 ~
[let i 0! Y7 Y* i' J1 H  R$ b$ p
let sum-money 0% v8 o" f- J5 {$ T6 ]
while[ i < people]
( z$ m/ ]* H7 S5 n[
* Z& _- e8 F# ^: vif( length (item i( W8 W" i4 C* v/ P
[trade-record-all] of customer) > 3 )
- e% F# P# c9 ?" [( G8 |3 t
[* e- P# l* a$ ^( t6 f, a
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& J9 e; ^- ?& L( j) s" H( ]]
! B* x2 ]4 L+ W9 h# B]! U: ~- L. ]3 N1 O9 t0 e% Y/ _
let j 0
0 |$ t4 h7 q2 W% w! a5 {8 Slet note 0' c* y0 j* \* N: d, [6 \& Q
while[ j < people]
$ y$ P5 f. {4 F) V[
9 _# |4 u! Q! g- [; `if( length (item i
" N5 }' @/ V! {* O* q5 p; P% f  s4 s( i[trade-record-all] of customer) > 3 )

: t1 ^* k; w) d3 q: N& D[
5 U6 e3 b9 s/ M& U! uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! h# q/ o5 P& T* O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( |( `; n4 y! U4 H/ n7 l" z, _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- p. l% t8 U4 G' o
]6 w1 f- b. V. F# }' D& B4 \
]
, l) h& S6 C1 y* i$ D4 f- `set global-proportion note
% L4 t2 s! i0 L]
! W( m: _; v# r3 cend
  _# l# X6 h) @6 ]! c* O0 ?; d" I" }, q5 b  E
to do-trade" }) Z0 x. u2 k9 k  u! t
;;
这个过程实际上是给双方作出评价的过程1 g) n* S6 E# a" j1 K4 C* j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: D' d! o4 T2 Y; D  T3 D% G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 s& J$ L- J, ^/ K7 q
set trade-record-current lput(timer) trade-record-current
# h) F1 t0 R( t$ h; E. I;;
评价时间
6 U# @$ W$ N" a2 [) _5 Task myself [
$ Y/ e5 U8 W8 c1 A" Jupdate-local-reputation
. e" v# A) t! Y8 ^) d2 F# gset trade-record-current lput([local-reputation] of myself) trade-record-current: v2 b# v' H( c3 R3 V! a! x! \* c2 F
]
5 x- X& T( [# o" T: B  B0 pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: [2 Q' s) I: G% f7 j
;;
将此次交易的记录加入到trade-record-one; c) X; B$ a9 m' p) K) ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 Z5 U& V' D2 c; `0 x! l9 p
let note (item 2 trade-record-current )! b1 ?. L7 _5 \7 G; x# V
set trade-record-current
" \1 W$ {7 J3 i(replace-item 2 trade-record-current (item 3 trade-record-current))

3 }6 |( x) m: m* Nset trade-record-current
& l. y  [1 U* O0 O1 X(replace-item 3 trade-record-current note)
8 {; Y4 N/ X, Z. i* u' t  X. ^% D" a$ M: ?

* s1 A2 s' g5 X$ d8 L$ G8 \ask customer [& }7 x/ }0 F/ j! C
update-local-reputation
! P. C& \# ^# g" u  r2 S+ K0 `+ Oset trade-record-current
3 i0 V* R/ j0 n* K* Z9 t6 r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( l7 U: R0 m8 E' k/ ~* _: q6 @
], K0 D, a. I  \" G" j5 i; d9 d
9 H3 o  {0 ^: V
8 |" d2 o; ~3 R: W
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. B3 S+ A  u# A" |$ K+ v
4 P1 v& S0 |9 [2 `) ~* V- r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  f7 ~  p/ ~0 r0 c  D$ X4 `  x;;
将此次交易的记录加入到customertrade-record-all
3 d& D% U  X+ oend
& H2 W- P4 a& z( X6 Z/ w3 r* D. c1 [* w# Y7 Z0 V2 r2 {' D1 a5 B
to update-local-reputation) A6 l2 a- H6 \
set [trade-record-one-len] of myself length [trade-record-one] of myself8 r% q: ]/ p' m7 A3 ?# G0 S
$ ~" l) [% |3 K6 x4 l2 t+ d0 h% ]! P

9 d% C; A  G5 P0 `9 h- D5 K;;if [trade-record-one-len] of myself > 3

" |6 l/ d2 A' Zupdate-neighbor-total
6 O; R9 P/ [- }" c( i3 Z4 c;;
更新邻居节点的数目,在此进行
& E& T! @4 w9 Y9 glet i 3' V0 z2 \, a) U6 B& }5 w
let sum-time 02 t! ^* ?& ^4 H' T
while[i < [trade-record-one-len] of myself]
0 c0 @- V+ C" \& {3 @& [: O  D3 E5 J, X[
& i0 ?# S' e* z8 z9 G; O# mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 J$ ^+ b7 {& V3 ]2 }
set i
# O. y5 g) |/ w, u7 t6 ?5 q6 Q; `( S' L( i + 1)

' X9 I* H4 I' D* \! w  U]
; i; d8 P3 l8 d( z3 Nlet j 3
$ m; c  ?' H% C. |. C+ blet sum-money 0  ], C, |1 _) N! q
while[j < [trade-record-one-len] of myself]1 T3 Q3 j! [8 `9 y9 x5 y
[% z# h3 K! t; r3 W; Q. 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)
9 K6 l& c# p) w* _" z9 Mset j
0 l- M+ A0 C1 v. k. T2 X8 e5 G( j + 1)
4 t- T1 Z) b) ~/ T5 y4 Z# q
]
6 a" o) }, T' Clet k 3& r) M5 k- t; x2 p9 B/ }
let power 0
$ [6 B. d8 \  j. q# [, ~let local 0  n$ Q/ }/ [! F8 b% O/ O
while [k <[trade-record-one-len] of myself]
5 {4 g- z6 U# u4 v[
$ C5 W2 s* x4 d: N1 Aset 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)
" X; m1 s. O" C; w. A* sset k (k + 1)6 k0 ^6 O3 I, B$ g3 T
]( ?: _, a/ n: a- Y
set [local-reputation] of myself (local). j5 R0 g: q* v" x+ v8 j$ O
end, |/ F! |* l9 {. g+ o3 U
% z/ w6 P4 c# T/ O: z
to update-neighbor-total
0 ~0 Y; P2 e; o- F2 D! \$ `5 H; Y$ U+ y& w1 |5 Y! M/ A9 A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ C$ ?* m' u; Y' _5 T- x

& j4 r# B& e6 ^* M, g1 ?# ~4 I

3 B/ C$ w, `: ]& X5 \end+ u0 B/ d' w( t, j

  H/ g0 Y( [. S6 U0 cto update-credibility-ijl
( b* B* N7 D% m8 V; Z" r9 T6 Q: u- e2 p- G" L+ c( w5 W; o* x
;;
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。
1 b% v) K6 f3 ]  tlet l 0; @  B) f% F: x0 d3 b) O0 K7 ?# e
while[ l < people ]
: A) i! T. k( D& L* K2 ?$ E;;
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
/ r9 R  Y+ k6 q[+ s2 O- n  ]0 j9 f- V' F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 h. e2 F8 X# ?" e, R5 r
if (trade-record-one-j-l-len > 3)
8 |- H* ~( w  e! D. i  f[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
  J- q: x; ^+ l/ B$ F! f5 N6 mlet i 3, y. O3 [) F! K! A! y# |# r
let sum-time 0" j' u, \! [& `0 J* [( |/ g/ \
while[i < trade-record-one-len]+ ~+ t0 _+ ]0 G5 s$ {
[
: M* \- R6 a3 [6 F' hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 Q5 D0 _8 q  [4 lset i: _. l2 h2 w- w6 N7 ]4 q
( i + 1)
* o$ t. s- `/ Y+ _% S9 R0 I. K1 ]
]* @- j* j% R) j9 e2 a, m
let credibility-i-j-l 0
4 Z/ e0 @( b2 O, ~0 r1 y8 w;;i
评价(jjl的评价)7 e- W5 k1 {* n* m3 Z4 B1 F, N
let j 3
6 c/ A, J3 s  a+ R6 O6 p; Alet k 4
" x- `5 k. B3 h7 n* mwhile[j < trade-record-one-len]$ r! P3 A2 |9 c; _" {! |8 I2 ]
[! _$ w/ n! @, |
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8 s* J& K! F, W
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)1 f1 e/ ?9 y9 ~8 l, j2 j
set j- H2 z/ u" X. P* w. i2 b2 @
( j + 1)

) E- U1 ]1 e4 H) L]7 }" `  t9 D2 W6 v9 j5 {. ~
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 ))# X  `2 ^. F- z0 q& d
4 e/ g6 P! s9 j/ q( n

; h" n3 N# m$ B4 F& o  Y* Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( I' w" T  Z5 `7 P. g' y4 }$ r  U8 l
;;
及时更新il的评价质量的评价- P8 X; ]* u4 Y! U( p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: {7 D$ ?" l5 z2 b3 m7 Pset l (l + 1)) E, O) x: }! K0 ~
]+ `2 w( K. T' Y3 M4 H7 r# Z8 |
end
3 H- Q! ^* w* a9 J  R- }: y! m2 M5 \* H3 [
to update-credibility-list* L+ m. d( V$ Q9 a, z( F. u( v
let i 0: @2 J( v8 p. P& |/ X6 P9 N
while[i < people]
: Y- T& K7 _6 Z; `$ ?, O[7 ?0 Y, G2 E& G
let j 05 J2 a  D: }& M" ~, W! M& s+ ^; H" H
let note 0
$ a. h& o7 v" h; H, S! xlet k 05 O, e% j% H. v7 I
;;
计作出过评价的邻居节点的数目" h1 Y. r5 J% h& f3 d% t
while[j < people]
2 d" t* s3 ?* ^5 L/ z[# }8 T4 j) s: X, {# e
if (item j( [credibility] of turtle (i + 1)) != -1)
2 b4 X# L: `4 q3 [: u# n5 k;;
判断是否给本turtle的评价质量做出过评价的节点
4 B, L: T& S; j! u) }[set note (note + item j ([credibility]of turtle (i + 1)))3 |: L1 H; b) L! C& r% T
;;*(exp (-(people - 2)))/(people - 2))]
" [9 m1 s+ h3 w' a) H
set k (k + 1)
, U8 ]; m+ Z3 x- g7 V5 D]+ C* c0 W& E: U1 {5 h0 ?/ a
set j (j + 1)
2 z4 [6 F9 V% W7 j  @2 g) M2 S9 d]
% V% b4 c( b5 t- Cset note (note *(exp (- (1 / k)))/ k)
. |5 L. o2 y0 Z& X5 C# Gset credibility-list (replace-item i credibility-list note)! |4 J2 y' g. b! {! H! H
set i (i + 1)
4 n4 |9 h# o/ ?4 d9 c" q% k9 G]
, P+ X6 S8 L5 b% y4 Tend$ Y3 Z( T# R: K) O# V; l4 L: S7 f

! z6 b$ r9 ]6 U5 X4 ato update-global-reputation-list2 R; n2 J9 ^% `# p1 m
let j 0  P( L& [) d3 p' L6 [5 F1 B/ [
while[j < people]
: h, [' V6 ~6 G) ]6 E[/ c1 p7 {! t/ C: c
let new 0
. e7 T7 k& F, t2 N  W3 N. t7 v;;
暂存新的一个全局声誉- V: [7 Q8 t9 P
let i 0
7 t' T$ X: S: Blet sum-money 0/ @& H9 \+ j7 x. K( [/ z- c
let credibility-money 0: }! l# W' a( I) ^, ^
while [i < people]
5 o: }" g& j4 g$ k* u7 D$ p6 z[
( [+ p' O7 q1 j. @7 K, mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* C3 `9 _9 ]- ?! oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 b; L: \' Z' J/ I2 S* Yset i (i + 1)4 n' F/ H) J' H+ n" N9 d
]) {9 U+ u. T  a3 Y  f- R- N9 B
let k 0  r5 j& ~" A4 j# Z6 k
let new1 0" u4 W6 s7 E2 [7 p( D: z
while [k < people]( ^; L8 I4 r; d5 r7 z
[
0 z7 b8 J% s) p) b, A0 t6 @5 Yset 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' {2 x, ?3 D! z/ mset k (k + 1)0 M. d0 {' r+ s5 \
]6 F- _* X# B( Q: I; i# r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 H+ r, l8 w3 W1 P" ?set global-reputation-list (replace-item j global-reputation-list new)
) ~! t0 h( f" q2 S" U6 Hset j (j + 1)
# x7 h9 g' {* x  W1 V! A]
% h) u6 b3 ~) N- B7 ^/ f8 s+ S. d) _end
% Q3 ^- r0 g1 b$ a9 J& E9 D2 g
9 s6 ?4 m: h+ K+ I$ k$ {3 Q

  E. n9 v8 T6 S1 Ato get-color0 J; N+ c2 z% r& E# z$ \
; `- x* M& m' I- h# x
set color blue
( \2 G6 P6 Q+ J/ F
end
- C+ Z! W, u* D( u. N" p9 ?2 U, T, f; G' S5 _6 O! \* t. d
to poll-class7 E" a  f2 R; b( @  C9 ?+ C
end
# B5 P) x& |( y$ w+ x4 Z$ ^
2 h6 C7 w6 W6 d% Xto setup-plot1/ O6 }- p1 C+ K3 R
3 s2 {: a  q5 K$ U) X4 n3 i
set-current-plot "Trends-of-Local-reputation"
+ C! G3 P" \' t! @
1 c0 k5 J5 D0 D) e4 f0 L# h# I
set-plot-x-range 0 xmax
+ c9 L8 J( u3 I0 @$ T8 t
* z$ U3 s2 E0 ~
set-plot-y-range 0.0 ymax

- e0 c* F; i. aend
, ?1 {9 B) h; x  @' i5 J0 O7 ~' S! d% S; _
to setup-plot2
. J: C% _$ m: O) D
1 H2 x  r9 C" W" r1 q5 N8 dset-current-plot "Trends-of-global-reputation"
) W" d% Y8 {  }4 e" p2 Y& o+ @+ r

) I. W. E' J$ N4 v# V! Dset-plot-x-range 0 xmax

3 q; I8 m/ L/ `. d" P# S& o8 v6 L: c! A% u+ `
set-plot-y-range 0.0 ymax

, j0 B! O; v: f( Q; i& d1 L: jend, e! D+ ~/ ~" l0 }9 v! i, ]

/ H# ^% t. J3 w  l  t; s- P3 }to setup-plot37 v" X1 j* s& C( D! s
0 V, m  X; [) K/ i
set-current-plot "Trends-of-credibility"

/ G/ {; @" p  a# K5 X3 S
: _  l' p% m2 \  Z$ p& b& A* n4 Xset-plot-x-range 0 xmax
3 @( Q  }$ Z: h' ^& F1 d
+ G" y- F9 p6 F" }# j
set-plot-y-range 0.0 ymax

/ M& O& h, K. o: [, a7 kend, w; @4 V8 k; B- a* H! K

: ?$ @* F9 ]1 b& Oto do-plots
8 a6 K( R: s0 n9 }" @& lset-current-plot "Trends-of-Local-reputation"
% J. m( J& m- Hset-current-plot-pen "Honest service"+ X) K2 Q# U% w
end
- ]& y  |5 b" J" O& Y/ y; ~9 j
) g& b6 B; a! |# W/ ]- k[ 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.3 o* L1 r% V5 J' y

) S( |2 ^# O% @) y3 e2 p  G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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