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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:
7 H' a# B- d- F3 G4 y% Pto do-business $ I" M+ o- `* U$ I0 P1 M9 `
rt random 360
, n( ]% f( U2 B  @. V: q fd 16 F+ a* `' F9 @1 f' @* W
ifelse(other turtles-here != nobody)[8 X& j& x; |3 [' f
   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.4 F" Y5 L4 P% [( D5 m! n0 p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : I0 N; ~) ]1 g) v' ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 H' `; Y; q. h1 n; f) q
   set [trade-record-one-len] of self length [trade-record-one] of self  J; E3 _" e* F* ^% {  l
   set trade-record-current( list (timer) (random money-upper-limit))
; W! u3 Z6 y# t& N# g7 u' U, E" u9 O4 ?$ ^9 z- L
问题的提示如下:$ s) n, V0 Q) L" y

( P+ T& j) `; F* h" q; Y! Zerror while turtle 50 running OF in procedure DO-BUSINESS7 `( g4 p8 N" {; P4 F5 P" F( v8 H
  called by procedure GO
" n  k6 Z  u% Q# iOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ m2 M8 O) F9 o7 Q* C7 k
(halted running of go)
& a. j! s4 I$ g: K  a+ k
+ X! Q, U2 W0 e: B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~~+ u5 h& w. f$ ]* F6 F4 N4 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
3 D3 [* q* S# D1 K( fglobals[& O' U7 ^& I% o  v7 ~: [
xmax& B' C* R6 O, `- F) ~6 H
ymax. k3 Y. a5 G& a  a$ _8 t
global-reputation-list
& Z, y2 U4 I5 U! \% w0 ?7 r8 k/ i
;;
每一个turtle的全局声誉都存在此LIST
( `3 }7 G' z& `! Q' c. |' z% Mcredibility-list' z: D$ M! q3 Z+ A
;;
每一个turtle的评价可信度+ b0 t4 l! S& [+ E" p( c9 V9 ~
honest-service( O6 J& X% H3 `. h( }& `
unhonest-service
( N7 S) m& I1 @! ?; n) K' ^! Xoscillation/ l" o/ \+ A+ {" Z* Y1 k
rand-dynamic5 O. G) c. q( b
]. F3 R0 v. y% V7 w/ c' |

8 t8 ]* E9 p0 P% ~2 N8 Lturtles-own[
# u5 E( U' m  ntrade-record-all' `0 g5 \/ k2 Q5 `: G9 O1 D& [
;;a list of lists,
trade-record-one组成
% c6 t3 J, U- e- i+ ktrade-record-one
9 c0 B8 E# W6 M7 Q4 X/ R: V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! [# L. N3 t5 i; [6 Q; f

3 K7 o- Z" X3 s+ R;;[
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]]/ ^2 s9 k5 c6 {: a& [
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 [5 F6 H$ ?  g# |
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
+ U9 [5 G, x3 W) aneighbor-total
( r8 p; x; _/ F0 J( A0 r* I;;
记录该turtle的邻居节点的数目. X% T) E& G  G: F
trade-time
7 i: _% Y9 ^4 [6 s9 J" p% X, x# g  A3 };;
当前发生交易的turtle的交易时间
/ i+ Q% h0 e# m2 fappraise-give
! V  ~1 U0 l& H;;
当前发生交易时给出的评价
) O' H7 {7 L3 B# gappraise-receive8 P7 E. p( O% m; ~5 @
;;
当前发生交易时收到的评价- R, e- `4 |! j9 ~6 S1 G8 w
appraise-time+ Y3 c/ X* ]6 Q/ a' \$ y' h
;;
当前发生交易时的评价时间) Z0 `' d1 S5 m5 d( z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 S. I# J4 M1 W5 ?* ?- S
trade-times-total1 K# S$ o; K3 X7 v
;;
与当前turtle的交易总次数% c: Z5 W) }4 ]3 }$ e
trade-money-total
, \' o/ |, z0 H' C' o; h2 T;;
与当前turtle的交易总金额
8 j; g- q* v0 T" e8 s1 Y. vlocal-reputation% @4 D( c  n; k9 t
global-reputation
, a% H. P. D: t7 Ucredibility5 i9 T6 F/ y0 j' _. G
;;
评价可信度,每次交易后都需要更新+ V( x- x, f4 a! [: s
credibility-all
" ^; E7 x) e/ ?! v) @6 s;;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4 g' s6 Y1 U! S0 A* L; ^
" ]: D) A* w" d
;;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$ Y1 B! x; {$ Q3 q* ~3 x! Y. o
credibility-one
  n. S* o" y7 N8 O;;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! \' ?8 ]$ V6 t% o" b, P! |" r
global-proportion5 l( a0 y3 V  s! V7 I
customer
( t1 c" u1 w9 [8 M* qcustomer-no
! f3 O( L! U8 M& Ctrust-ok
  ^! X9 z' _: `$ T1 ptrade-record-one-len;;trade-record-one的长度
# U- L4 t8 W& D& S. i6 F1 v( Z]
$ d# ?; @, O5 ^# ?0 \2 J3 w* a6 n' p# n! d! y0 k4 o$ K
;;setup procedure
8 M; s  L* U$ }1 [/ m
" E6 z1 ^7 ?. R% t$ o, M' Bto setup) q; R5 K" C  b8 f

6 n% c; C0 v0 t/ uca

. ^$ t/ x, J8 _$ _8 P" M3 I3 g; ^
0 [% T; P( U) p# w+ k* x, Uinitialize-settings

/ j! f+ y* J8 Z; I; \9 s
7 b  l2 z1 p# E6 @% n# |3 v. Ncrt people [setup-turtles]

" q1 Z" U) v2 g+ C
0 m* |/ z" L2 X9 O- Treset-timer

; q& `1 a% Y& U  B# R1 t
; c/ E. Z3 G/ m- K$ b- \poll-class

, S* C/ b  N; J' c
, ?' I2 t# [7 ^- Ksetup-plots

% P8 ]: R$ d2 S2 K& k( c8 E/ B- e4 P, @: O4 @
do-plots

0 c3 M4 C) Q3 N# L# A5 Wend
4 W; l& x$ Z3 ]4 O' Q. i/ {0 N
to initialize-settings
) a0 a  C6 G4 U7 g2 f/ _* N9 z3 d* r: b* w
set global-reputation-list []

& P7 y( \" |! ?$ T" W7 O7 b  |, f
, c& A' ^! V( m+ G* w6 h3 Iset credibility-list n-values people [0.5]
6 A3 ~" I; V; t/ K! P! E4 K8 Y

9 ~( }1 m5 ], u9 O2 ?set honest-service 0

9 X: l# A3 j1 h) [0 \
2 Q. {4 o: h( E! ^8 _4 f+ lset unhonest-service 0

4 y& ?" W' t& h; }/ x
: ?/ \$ e9 Z% u6 \1 c+ R% D+ O. gset oscillation 0

0 a6 v4 Z" t: w0 ^7 o  O& q
3 _4 V5 d4 p" f, r) X7 M) g1 Iset rand-dynamic 0
. M5 q4 G$ c. ~  O: x. k5 f1 a
end
6 A9 a+ H  S$ d! A- J: r
  F( u6 O* Q) q# s6 E- s/ ^to setup-turtles
. d1 S" @* P6 |9 P: j5 C+ sset shape "person"
0 [2 l- b/ {2 s/ n1 I0 H  Hsetxy random-xcor random-ycor
' O+ ]+ y0 m4 f. j% y+ u7 eset trade-record-one []$ Z7 F9 [! I% E! f
$ c/ f  T7 N; A5 L& E/ H, o
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 S, f+ o- u0 H$ l# M( L2 p

# I, y1 l! s0 w1 m8 e& `set trade-record-current []
% ~8 m8 ^6 T1 z7 U3 m( oset credibility-receive []
1 B8 }: a; w6 }+ N, nset local-reputation 0.5. Y+ ]* [- }9 c/ o5 p/ \7 M: ~2 ]% \
set neighbor-total 0' Q! y+ i7 V6 w) W0 P! [
set trade-times-total 09 {- o" j, h. t3 }
set trade-money-total 02 r' d) x  l/ \  K  x4 B, U
set customer nobody3 Y  u9 ~# T. K' a2 U
set credibility-all n-values people [creat-credibility]
, A" z; K" b7 A! J# d! iset credibility n-values people [-1]
* G7 B- X1 O" \get-color
' Z$ c) r: @8 d! F

: A" }4 R9 B4 o# Q- ^  [end4 @$ ~# ^% |0 n. Z# A

7 U7 _! G+ n3 B0 \0 e) S( zto-report creat-credibility
, O; ]( H. ]+ ^0 I7 M4 U' n+ B  Nreport n-values people [0.5]
4 v) Z) X" s8 xend
7 d# V1 \: I3 V( ?, H: t7 O+ x' v
4 ]* L. X. s& C4 l$ b, `5 a6 Tto setup-plots
; }9 e/ o  A  J$ a6 b- a  R  ?
3 R* p: H9 |/ r/ g" }0 c1 }set xmax 30

0 I: T3 d* J2 X7 h' ?! j
( S# m8 q& T0 N+ x9 ~: p1 ^$ d1 oset ymax 1.0

4 H" {  A; e& q! ^. j
1 O+ _+ U- Y( {* @clear-all-plots
5 G8 V# w% {0 C2 V" s4 g7 p
0 i4 l5 Z; d. ]) R1 ]
setup-plot1
* a- z- U! o+ h5 g% D# W

$ r1 E. B! Z# ^" A: Q8 r2 x: fsetup-plot2

+ Z: z. H, x, e3 U$ A# p# {6 W5 _+ M7 m, d4 `
setup-plot3
! Y: _: I+ r# }- X
end$ W; l6 B9 [1 r

: b4 b0 }2 F  N6 x( D;;run time procedures' f! B: L9 u" t2 S
7 E; v2 r+ M5 s' N) D5 L# ^1 ~8 ?
to go! B+ @9 B% I" z; _0 @

( n5 B% B: I! F* y, Wask turtles [do-business]

( P# k- D/ ]- f" g# ~end
7 L0 i) S6 g* V
$ Q" r& d+ Z/ ~) F8 [to do-business ) h: L+ F( O: o

' @6 B' ~4 N1 ^0 s3 [5 c! R  b) t- o: K' x
rt random 360
, K1 L9 Q' b( s, S) P) v' s
6 ^  K; l4 J9 `2 ~) t
fd 1

$ g) A4 R( {- Y: \2 R5 L# o! y, F* {4 Q' E
ifelse(other turtles-here != nobody)[
, h, `* @( g1 |. n
7 D+ z  j+ S" C) N  P5 F0 C
set customer one-of other turtles-here
9 [* e8 X& _8 v' U8 u5 P
" E; m& Z$ q1 p, \" n
;; set [customer] of customer myself
6 T; r* R6 b5 a

7 F2 _( q$ _2 h$ I$ J3 Uset [trade-record-one] of self item (([who] of customer) - 1)3 {$ @! F3 o& E; B$ y/ [5 V- X
[trade-record-all]of self
+ q, R) e4 u: y5 T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ r, ]. [+ E7 R+ ]
& V0 T0 A7 L3 C6 m! ^
set [trade-record-one] of customer item (([who] of self) - 1)$ Z+ [' J5 K, H6 h0 p% q9 {
[trade-record-all]of customer

7 @  p+ I% x: D
, K+ I$ s4 {& m7 B* d0 Oset [trade-record-one-len] of self length [trade-record-one] of self

" T/ i6 y( g  w' M  Z- b! ~5 h! O$ s6 ~" s* f. O
set trade-record-current( list (timer) (random money-upper-limit))
( t1 E  `+ c7 i2 M7 v/ u6 v

5 ?2 p, U8 c$ w. I3 Yask self [do-trust]7 f, _/ F6 x& t6 N; T' t
;;
先求ij的信任度
6 P/ }$ S1 ]$ p. m! b: y$ v: T) F# |) o4 ?1 G) p4 e3 r6 G
if ([trust-ok] of self)6 Z# H, x3 _, q& S! u  z
;;
根据ij的信任度来决定是否与j进行交易[3 w$ s, X5 ?6 x6 _* S' F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) P1 S& I; U6 U- ~# d

$ h0 S5 K- |7 p+ J- j5 L[

0 W: \* y* y2 B* p& l, z% Z- j
6 `# q0 Q/ s, K% Xdo-trade
- o0 x. x, T1 }( J# d4 h. A, h  O% o2 F

! l8 d# ]& G, ]1 E8 oupdate-credibility-ijl
% g5 F2 J' O+ t8 W% [
; w/ W& @* V7 w  M5 c9 [
update-credibility-list
1 ^# U: a6 W% u2 ?; I( K2 ]
. u0 v# p3 a% H1 z- x* Y3 b

) d3 n0 U9 }: ~/ {9 ]6 T- i# u* r/ }update-global-reputation-list
- w7 H. @+ d% {* O2 T3 m. r

% j4 U3 r, E0 n& P! a8 tpoll-class

3 x* ?6 U1 h8 t; }
) Z5 {% M8 @! h: O- gget-color

' G( f+ G# D. |# U' \" \7 J* B6 ^
]]" B/ ]/ \7 I4 m- l0 V( q

& X9 J3 z" z4 f# D+ q; c! Q6 E;;
如果所得的信任度满足条件,则进行交易
. P/ o8 `- h. J2 W# p! e5 u1 y7 N. i1 Q/ [  f
[

3 C0 q2 k: c9 w/ d8 t
& _4 N6 W: n9 m8 s4 x* w3 Ort random 360
* S3 I# u2 D1 C. r6 q: D  x

, g' t; S( K7 D! R8 Zfd 1

9 o9 f1 P6 K( A( j7 t% @; _6 D3 n3 G$ O
]
9 ^' g% l8 T' S; z- h

8 z6 r: V; Y" _" b+ C) i5 a" Y' X  ]end
0 m9 {5 [. U2 V0 J, o. |  d
9 `! h' l* h/ ?7 A( R9 F$ i
to do-trust
8 J- i& ]  b7 ]4 Y6 X  x$ `4 Pset trust-ok False* t, E# v3 K" P) R* Y4 x3 v/ K

2 ^0 T: p2 P6 C4 _; y

) Y8 r6 ~/ Z4 Q  }5 flet max-trade-times 0
1 T% l# r8 a; f0 O. D7 v" xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: F9 V1 Z) H7 n4 {
let max-trade-money 0  J0 G/ t! Z% i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' b8 p; G* f: _' J+ B! S& ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 Q. x. X$ ~2 l/ S7 [
7 p  [/ b4 U5 Z0 R' k( E
4 C, ]% \4 x9 ]! X3 R
get-global-proportion3 @9 }' M/ m/ s4 @, B* o" j
let trust-value
- q4 A$ w0 [1 n# C# X/ n% Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 q  D1 c" }: T0 z* N# R
if(trust-value > trade-trust-value)
- P8 F1 A2 }7 O[set trust-ok true]5 v: Y, f1 Q) x' j/ \
end: m' U! ^! S: \9 k/ Q! M8 w

; T8 J7 l/ j- eto get-global-proportion
% Z9 p1 p* t! P+ |/ Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. U* q$ O# I" ]7 T6 L* N, z+ n1 D1 H[set global-proportion 0]
& z9 K$ S6 X1 |8 a[let i 0
, w1 J" U/ Y! A0 ilet sum-money 0
5 P/ J2 t. N& `& r$ J+ }- |" y. f$ Nwhile[ i < people]; f2 r' y. p/ B8 O/ K- ]
[
+ B6 f/ F$ v/ d0 j0 qif( length (item i
- \6 v$ a, H; B! ]* f/ c8 `2 ?; N[trade-record-all] of customer) > 3 )
8 \- o/ W- k; b0 O* W6 m9 i
[
- |5 r9 i7 C# I8 M- r5 _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 B" x6 E7 _6 [; r" f. O: X3 }
]
6 b; ^4 T9 I- u; E5 k]
9 o1 e2 v* D1 G/ E& ylet j 0  @; ^5 M9 p& s4 ^1 t# y- g6 o
let note 05 r3 v) I, Z) h
while[ j < people]4 P- A- x! C$ G# o. |; C$ u% ^
[2 L: F2 N) B, T, f" g/ h/ j3 e
if( length (item i6 e0 U6 B  y5 {/ i" [% q
[trade-record-all] of customer) > 3 )

2 h, s9 v; }0 p. E: ]! \[
# a2 C; \; t0 ?" {/ aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 V4 o6 h2 A; P* W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 F$ J: T! {' w0 G' Y* k: `1 q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, B# W- ^( R. }: [) e2 v]" y7 d- f8 Z# p' p
]4 \2 m/ A1 N; N  y$ z
set global-proportion note2 A6 p3 ~! w1 M& d% E) D# M
]: C+ f  s4 X  \5 T' E8 U. V' z! A  L
end. M1 Z1 {# L( p
0 r# p: |$ ~1 U  w2 m
to do-trade  T% c# r: |+ e2 C% r
;;
这个过程实际上是给双方作出评价的过程, G+ \" q8 T  i" L, o- P7 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( e" I5 J$ X$ r8 V8 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ w( ]1 {( s/ p4 l9 m! h
set trade-record-current lput(timer) trade-record-current
+ @4 T+ `2 O* l$ l2 [; p;;
评价时间& u/ c" k& i1 c- I/ `6 m/ [
ask myself [. D3 U! C: g; K0 U6 C
update-local-reputation6 t8 }! K& v) ]: O
set trade-record-current lput([local-reputation] of myself) trade-record-current
- B/ m4 E6 c& P$ w]2 y- V9 H* y" Q, ~& k2 {( m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* \( U, Y' k* l% r" O6 p;;
将此次交易的记录加入到trade-record-one/ S# R) [* x. X$ b  M2 |: k% o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  E4 }* n8 I' `* b3 v- P3 i; h
let note (item 2 trade-record-current )2 ~) A8 `1 {+ Z  f0 R8 ]2 U
set trade-record-current# t6 _% D  J/ t. Y+ j* v
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 @7 C9 O! k" b3 _
set trade-record-current6 U4 Y, h- U+ g
(replace-item 3 trade-record-current note)
$ m( D. J3 x: }+ P$ d, C0 z9 P4 T5 G5 p( m3 ?6 b+ \# q! y
3 G( H* a4 T4 Y* k
ask customer [+ [6 c, n# Q9 w; z- ~- G0 B" J
update-local-reputation: v0 Q  w& h' A+ z0 T. |1 P  G( Z3 y2 u
set trade-record-current
# _# x1 M5 K* t. Y3 c- A3 ]# Y7 D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 A) l. b1 R1 W5 i2 c! u; d. ]]
, a* g& b1 B) v  s$ ]! c1 E, D: B
/ R' T7 D9 o4 P6 \
& `+ w& Z6 z8 i, J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( H, y& B" V  X, |5 t9 c

5 o' r; |2 L! d: M/ yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* e  l  X" }  I- s
;;
将此次交易的记录加入到customertrade-record-all
' A. _8 q* y; }3 u' |6 Cend
& e9 k4 s& I$ _% B: l
0 y$ X! E% I7 o" Xto update-local-reputation! h% L5 w0 s% D: Z- K8 K6 b$ c
set [trade-record-one-len] of myself length [trade-record-one] of myself
  z4 w, I: f8 R3 k0 Z( ?! U! c" `7 Y* l
/ |: w% t* X0 C& s+ A4 w; d
;;if [trade-record-one-len] of myself > 3

7 \$ p3 i& a4 r7 f3 J) lupdate-neighbor-total5 N5 g) E$ |7 y1 y& C: o
;;
更新邻居节点的数目,在此进行" v6 T! A. f9 i7 m" F- k1 b, F
let i 3+ D1 t9 @  X6 |" {( s
let sum-time 0
8 v5 u, }- d7 W; }2 }3 G. x& @while[i < [trade-record-one-len] of myself]
" |) K4 `) y) j$ }[
4 F0 R% D  ^% I2 u$ o! @set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  K+ a/ v" p6 ]+ x1 n& U0 zset i
8 n; Y' [. s+ u" ?& u0 D( i + 1)
- L+ l" G: m2 e  M* w& j
]
9 o" y9 ~& |; _% ]; M4 @+ t, P! Jlet j 3
& g6 {6 S$ V. _8 P1 w! b2 M8 dlet sum-money 0
+ o$ g/ {. P; u0 Z9 W  uwhile[j < [trade-record-one-len] of myself], x4 r) t. _0 i  b* o9 }! ?
[
% N9 J+ ~% A7 F. f1 h% w" g7 H5 aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
& B, G9 {, I0 K) r. T0 r* fset j8 |# K$ x/ [6 C
( j + 1)

# l0 V5 f! Q; G5 N]
4 p2 ]. j" V6 p5 C* f! I4 u' D& Mlet k 30 }, N: L1 h' [% U8 Q& X
let power 0) a* ?3 s% p8 g1 A5 G
let local 0
7 J0 X& b- m2 x- I" _* ]) {while [k <[trade-record-one-len] of myself]4 Z0 Z9 h+ c: |! \# _
[
; [, g, u. d! y3 r' Y& qset 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) . Y1 u! ?! c& C
set k (k + 1)* F0 m0 R7 _% C
]& o4 O: t: z/ z+ f& Z8 H
set [local-reputation] of myself (local)# \* p. g3 P8 Y$ d/ O
end
: Q$ ?  S+ ]2 u( E$ M3 l4 g, K& k6 |& }& Z0 k: M
to update-neighbor-total5 c8 a7 J; {/ \- }) f# A) p' `. Y

9 [2 w  E2 F. v: S3 Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- ^$ Z& N& ]& V! P( C- H$ h
1 x/ G% B4 N- A% B! E

# w- N% v! x+ r+ hend
& x% b$ Q; z4 s# u) x5 h, @2 Z6 Z7 i4 C1 Y( o
to update-credibility-ijl
% m' E- {. |7 t% [  Z. `4 \) I0 e, E- `
& k2 k$ M0 a; y9 E5 X9 ^;;
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。
/ X: W! Z! E9 k# }9 ?5 llet l 0, |: [) A- Q" o; K; K0 V
while[ l < people ]
; e& i  X, v( {. N0 t/ E0 t;;
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
; n& R6 j+ D, B) f[3 g& E! k4 N8 i
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" Y8 C( O& |! n
if (trade-record-one-j-l-len > 3)) H7 l3 @- i4 @# U+ n
[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
" }" [/ B/ O! ^1 j4 J9 k. Ulet i 3
) {/ D3 z4 |$ a2 A) @let sum-time 0
7 ^, [6 B4 x) j3 ~0 Y( v/ nwhile[i < trade-record-one-len]
+ K+ v$ S- o* X4 B  O[
7 z5 g; `3 u) r3 d. t8 c  cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ Y5 ^1 e+ S6 v$ L1 Cset i" |* c% k6 T! [7 a
( i + 1)
# J4 `1 h1 h5 Q8 J# H) r8 T
]' C9 D+ L: h9 J4 y* a$ Q5 c
let credibility-i-j-l 0% O/ B( a! O# e& E+ J3 J% r
;;i
评价(jjl的评价)
  g* c3 Z) u/ F; q9 J" Vlet j 3  }( ~4 H5 o+ w& G! K) J2 [: y
let k 46 A! @) l0 @9 ]
while[j < trade-record-one-len]
4 U( N' P5 _  Q[8 Y9 g. O! p% d  o2 C( w
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
* L) G& D; b/ N! Wset 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)( F: D8 y: \# v" q
set j
3 w8 r) w, n" K' X, i2 Y2 v  {- b# F" D( j + 1)
. G# a9 o  ]( x, z
]
: m% N* z2 z6 G- n+ R1 W2 V( e5 s9 R; 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 ))
  v+ E* J0 h  n0 M% ^6 p) b: Q" e9 w$ q4 \1 T; k7 q- Z: O/ a9 B! q
  s- m" Q/ i, i, d9 `* @, n# s
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 d- \" H3 p! L$ l) A/ d3 p
;;
及时更新il的评价质量的评价* |- E' i  y$ |" `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# f3 W% b* Q. S8 b
set l (l + 1)
8 |' M, h! h1 ?]
' p6 E+ S2 L' dend) U* w, f2 {* v$ ~

4 b+ E" s+ A2 ]. Rto update-credibility-list
' k) }, y0 ?7 n6 _, l+ klet i 0
$ [" B/ g% J% n5 Pwhile[i < people]1 L  M5 s* L, E' }
[% x8 q+ M+ g/ t
let j 04 p) X" H  M. M7 [. {8 q
let note 0
, F+ s' l% Z$ Y1 J. s, _- clet k 09 h4 h( j1 |3 Y3 P: T& f
;;
计作出过评价的邻居节点的数目
" j0 Y- P% l& e- Gwhile[j < people]
% g' D; v" U& X: {* X[
: j. J! v. [4 e9 E) v- mif (item j( [credibility] of turtle (i + 1)) != -1)
6 J: R2 M( A3 d( u6 F/ ]: Z;;
判断是否给本turtle的评价质量做出过评价的节点; L! y, T7 P7 L0 g* e
[set note (note + item j ([credibility]of turtle (i + 1)))
% t# u: R2 o; y8 v' x9 Z. ~;;*(exp (-(people - 2)))/(people - 2))]
, d+ D6 b5 ~- g1 M' X
set k (k + 1)
/ a/ b# P* y) g$ U4 e* t]' J8 L  W( ~+ S; {2 i3 i3 I  z
set j (j + 1)6 m, ?  ?; e1 i9 c7 r# L' f
]  `1 H1 G( z; W8 O
set note (note *(exp (- (1 / k)))/ k)
: A! O7 g$ R0 u2 Q, d" yset credibility-list (replace-item i credibility-list note). ?" m6 W8 V" C4 X9 @! J6 E1 O
set i (i + 1)1 t1 ^( Z0 s3 D% e- a
]" g  g. P+ R9 Z2 {$ n, Q  y9 ^  J
end2 f0 \7 w7 C7 S3 P  P

4 C9 c. V2 M& I3 Xto update-global-reputation-list9 Q& T, a3 K( Q: f# e8 n
let j 0% z& \' Q: n. v3 H8 Q
while[j < people]
* ~5 o/ y( p; R2 O7 G, @2 l[9 V+ d# D0 u- G9 ~- r: L
let new 0
% Y/ p0 ~- Z, q/ D! }2 ?;;
暂存新的一个全局声誉. P$ j7 _* @: k$ o& d9 J. e/ W
let i 0
) X1 a" p. I0 T7 f2 r$ {. l9 |let sum-money 0
. [  P7 ]1 d- J5 S, H- `let credibility-money 07 i) v! d- M/ L" T
while [i < people]
4 o8 g1 q+ ?5 ^[" V4 K: g4 P6 U" p5 D7 E3 ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. E0 K! ~  w! W; b2 [) U, h/ @3 hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' i. {. o, v) q% W' f$ pset i (i + 1)6 N$ @, \* k3 S' f5 G* K, Z% o: T
]7 t8 }9 R6 E5 N! R8 K/ |
let k 0! q+ C/ _+ ^7 v% A' S% ?, ]" i3 q
let new1 0
5 c; V6 F$ X7 ^. R1 dwhile [k < people]# `8 c) ^0 I; \5 E9 a* ]' ]
[
  w" F- _* {) u' jset 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 r; a( H5 a- [1 u/ v! V+ E4 Yset k (k + 1)4 C; H% W2 g" o- Z
], D) \9 }' A+ @" r+ I( ?
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 F  H4 g% n! k/ vset global-reputation-list (replace-item j global-reputation-list new): @4 Q% _" K- I: |8 F5 @6 @
set j (j + 1), {- z5 \. m9 i( G) L( N
]7 }( L' [' A  {# Y( n& g6 ^  O
end8 j# \8 t: I& w' v

9 ]& e1 `! P- q8 a# s4 b
1 i, W4 B8 c0 }6 C# }
7 j$ V6 f( y  y% ^: D  cto get-color
, J5 S8 F( s1 p4 V' b$ j) p4 h6 {# X! ?
set color blue

# U9 I# \/ a( gend# Q: u. j, g, {/ W6 O3 x& y
6 F/ G7 x* ]( g4 J' L+ r
to poll-class
) D: S0 c( c7 u/ I; ]2 Eend4 A+ i& X1 j+ r( ?/ _
/ k  c! {. |, X, K
to setup-plot1
/ r) a. a9 C7 c! b
# A4 v  _" `: Kset-current-plot "Trends-of-Local-reputation"
# u0 ~' O4 a7 D; ^
/ _' Q$ x( k9 p& V# E. J) l
set-plot-x-range 0 xmax

  M. }8 n3 {+ N7 T5 G, X/ V; o2 E& c% _7 e" s& R0 c
set-plot-y-range 0.0 ymax
; M: u# C) Z9 S) ^& b. v
end
: h) Y( y) ^' c! f
4 a; m8 l. J! @( F4 k  Z- Bto setup-plot2
8 `( t6 N, `# B( ]# s: A2 y1 r  M9 G1 v+ b; `
set-current-plot "Trends-of-global-reputation"

" w$ G- i8 ]: H0 k5 Y+ V8 K7 m4 W) g# t2 N6 X/ u8 G0 ~
set-plot-x-range 0 xmax
  j6 ?9 w' B8 F  W% H+ x" Y
5 f! K/ F4 ]& }/ Y' R
set-plot-y-range 0.0 ymax
! {( C# a: A) P) A% N" ~2 B7 X1 i/ R
end
" e; B1 _  p+ S4 h' V/ N5 V- B3 ]* d0 J! F) N# ~4 M" h( L
to setup-plot3
' ^. o9 P* ^* i+ d
; A# l/ ~8 W" ]  P8 [, eset-current-plot "Trends-of-credibility"
' z/ l/ N1 V5 k; l4 h

2 K% B$ `( c+ W' ^; b- o2 J, a+ mset-plot-x-range 0 xmax
. J( ^' j9 `  x* A

0 f* r4 H3 t, P7 f, s8 O2 Y2 u5 Fset-plot-y-range 0.0 ymax
9 e0 z& J* q& L% H% g. Y
end2 ?, g3 k& H! Q2 N: F  s
% K, [0 }1 a3 f; Z; U; C, s
to do-plots
. t7 r$ l, r5 ^1 zset-current-plot "Trends-of-Local-reputation"
6 l9 G. O, `5 M% g4 O* kset-current-plot-pen "Honest service"
- I' l; ^  ?2 Vend1 f. ?9 J$ L4 h; }1 ?

& d8 v8 z" I% [. V9 u[ 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.# W/ _& A3 t7 Z2 U- P" k% _
9 a9 _6 \" W2 @* G: D7 k* g" N8 E! v
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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