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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:
( A4 x, N& I4 d1 Lto do-business % T/ a% i" t* B& f) h* f
rt random 360
3 O7 U1 P2 m4 p fd 1
$ g4 Y9 B8 T2 p/ l/ {% j ifelse(other turtles-here != nobody)[7 [1 _8 Z# y) L# l+ E  i
   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.( A) A6 J5 a1 g' Y: |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- _: V3 t, F; G$ [6 a, E& C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* x. l( Y3 o2 e' _- _- a8 q   set [trade-record-one-len] of self length [trade-record-one] of self
; x  r  b, ^6 \) w   set trade-record-current( list (timer) (random money-upper-limit)): X' s3 y) V' x9 n3 ~
  t5 L+ g, V+ v
问题的提示如下:3 T$ @7 e/ g3 T$ p" p
! v$ S7 U- D3 ]8 \- `, u
error while turtle 50 running OF in procedure DO-BUSINESS
) \/ H" ^8 p; [  c  called by procedure GO
7 _9 M) W1 y; p6 M% dOF expected input to be a turtle agentset or turtle but got NOBODY instead.
- ]5 t. |0 c' M0 a7 o2 p* n* \
(halted running of go)
8 L! r5 a6 c  Q, x: n* V, T6 i8 N) 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~~
8 B  z3 t8 c* i, Q2 z0 L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
) E. x: F+ I, u2 q) eglobals[
; s. {' t8 Q) L% K  mxmax5 h' T! v1 w$ Q! x4 E& t
ymax2 q2 ~5 [' b7 R) P
global-reputation-list
: K+ }" @7 G3 o; M- T2 p
% A0 G' @7 ]1 {7 R! G: s8 ~2 p;;
每一个turtle的全局声誉都存在此LIST
" H2 N$ q7 s+ N1 Vcredibility-list
' {" N; d% Q' I# y' [;;
每一个turtle的评价可信度/ j$ E9 E6 ^" d% [) ]
honest-service
) d! D% \$ m5 f0 Z: Uunhonest-service
/ s+ v) F$ f8 R% r9 ~; Xoscillation
2 _- |( b) n8 p2 E; lrand-dynamic
: v2 g) x# k4 S2 b3 []- i" u5 O( t, l
1 L- V9 d+ Y1 o# s) O/ u% q
turtles-own[5 H/ G5 v$ d- y1 C2 Q: j) {8 _
trade-record-all
! `! M: F7 M" }1 }1 l;;a list of lists,
trade-record-one组成; \' R9 D( k6 a: R: }
trade-record-one5 G! m5 k1 @% _+ g8 I" [
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& j' Y, P) O, J) @# k8 C" b; P. ?$ p* s$ _2 u6 s
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
. [- Q( T) P9 Z% y8 g0 rtrade-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 U& a5 i: z. A
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
( {5 q' m0 o; _2 W3 Wneighbor-total; |: L+ x3 k: D1 j$ o+ j
;;
记录该turtle的邻居节点的数目
- r, g4 g& T4 y& o) `; m6 Q  ktrade-time" Q8 a* e7 R. I9 f; j' M6 G
;;
当前发生交易的turtle的交易时间4 {0 P2 t5 r3 c( _' j, g
appraise-give6 n, R* N# g( u$ T% p5 F$ \
;;
当前发生交易时给出的评价
4 t" A; O* g9 u8 e) Y% [appraise-receive- C5 e* F5 o6 _- P( Y0 W8 K
;;
当前发生交易时收到的评价: G/ L' H: u( _2 j5 [4 e2 Z
appraise-time
6 _6 K4 F1 G! T) n3 J. u$ J;;
当前发生交易时的评价时间
3 ^; M' b; h1 v1 M  g0 S) ]% Ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉5 T" ]" B' U' ]" w6 B) b! w
trade-times-total4 c7 ]+ f$ ^- [4 X9 u+ D8 W
;;
与当前turtle的交易总次数
* l) N1 c8 U$ {- O8 V, ^trade-money-total
% w5 I  V; Z5 P# g/ _;;
与当前turtle的交易总金额
( \, x) G. G. g& xlocal-reputation
/ E' z* X- j" v$ Dglobal-reputation1 {/ [# O) F6 r7 S" g* A+ U
credibility
, k7 z, Q  K4 ^5 U9 ?0 c9 E! ?;;
评价可信度,每次交易后都需要更新
; g9 V# ~3 s8 ^% g# K) [# X! Bcredibility-all7 R  M) P7 W5 W3 O: A$ _5 Y: q( 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% v! J4 m: @( |: ^: j  G. ?
. [/ N6 h9 {7 O% o- \* \1 F
;;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0.50 j& W8 G2 d4 B2 Y7 v
credibility-one
) A: \; v% t- e9 s9 w* _;;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  C, m3 z2 N+ h
global-proportion
0 _+ R- v, h+ z9 j% s8 Kcustomer
- s7 ]& L1 R+ L. M& c5 dcustomer-no
# p+ F, ]+ P- ]' c: Atrust-ok' n6 u( c: @& b1 X$ Q' @3 N2 ]0 z
trade-record-one-len;;trade-record-one的长度
- c0 U& V' l3 e8 N* L]
3 ^' l& x: J, T5 w$ S1 R' \1 G
" O3 d, C) |7 Y+ V, R. ];;setup procedure
6 m1 M; z; b4 l3 l  v5 V; d5 Q0 x% y# T8 b1 x1 e) q
to setup! R  L% W) x) m% Z

. o* L) U' {  c' @3 s, O; Y1 ]ca
% Q# @, [5 z1 I/ m
0 l: {' u5 r& H
initialize-settings
; R4 T; m) {/ S% s1 z, S( M
; k0 e" S- i/ ^! Z# d/ @
crt people [setup-turtles]
% C; d- T: ^6 Q$ f3 [9 M

* p1 h2 G0 _, F1 y8 x: j5 o( T' `* Wreset-timer
' n$ b' n0 G1 i

- _7 }/ [7 X3 N8 Z$ S+ _! kpoll-class
1 Z) y# p" L% q# d% }$ K5 }

* d, n/ b1 E- Y) w( Vsetup-plots

" J: H$ J8 g8 K% I6 y$ E3 s
& w% l+ j+ k8 a. ^do-plots
; h3 s. a4 d) c( N
end; ~8 n* h5 i: Z" s$ L8 h  M
, m0 U( Y0 ^5 ]4 @* z
to initialize-settings
1 ^; z* D* d, z. q0 r( \) J+ ]1 S; ?. D- I% C6 Q
set global-reputation-list []

, E* y2 P: P  e5 M1 k/ X) h* P5 Y( \, k9 U1 o5 w6 t2 C+ e7 i
set credibility-list n-values people [0.5]
  f3 o. {# n4 b$ I

: z7 o0 v. I, ~( G3 _8 oset honest-service 0
' i5 @& N" f" b
3 q/ l0 c1 P6 K2 R7 s
set unhonest-service 0

! p& Z2 l& R* e! W, d0 {1 U0 L+ w+ y3 A: \4 Y' o
set oscillation 0
: V% [$ T& A0 ]4 o) J, a5 x$ c- ?- A

* N: p4 C6 H; gset rand-dynamic 0
+ w3 w& @" o3 z/ Y
end8 a# W. @5 B) m: k- h0 [

8 N' b( g/ l3 F2 `3 \& }5 Hto setup-turtles " i' J3 B" t: W! i
set shape "person"
: H1 ^  v" e3 g6 s2 j& \setxy random-xcor random-ycor
$ V8 v5 w% v) _( Oset trade-record-one []3 P! a$ I/ r3 P5 F

: B9 t# F& b& i  \! Y. K& h& D# M5 Vset trade-record-all n-values people [(list (? + 1) 0 0)]
. m& i) W0 X) l# }
8 A/ G/ M5 {1 U
set trade-record-current []/ D$ r# z8 Y5 k6 M7 U0 m, q! g
set credibility-receive []
! N" T  {) H) @7 A; f2 qset local-reputation 0.5# Y1 t/ s* M9 R# p
set neighbor-total 0
+ m% X3 v$ U: m, S) h8 Eset trade-times-total 0
; G( k5 q5 f4 h, kset trade-money-total 0
$ h/ z( R6 Z+ r) z/ tset customer nobody2 c4 j: E3 Y. o6 d9 ^4 I2 f  s! [0 j8 [
set credibility-all n-values people [creat-credibility]
7 I) t7 d8 E+ q0 [# v6 d3 j5 Dset credibility n-values people [-1]
5 O" b3 q5 H% f, h$ Xget-color
4 f. s1 j+ ]; B3 ?0 `' q2 k
( k3 ?6 g) y3 S+ J% l- N
end
  x1 [4 B5 P$ D. f9 Y0 d% \$ ]8 X
: J+ o; ?# s6 K8 jto-report creat-credibility8 F: }) t8 D6 T) ^3 v
report n-values people [0.5]* q/ N+ P. M4 A" I
end
. N( x0 B# p/ S( X7 b
% R* ]5 |, _  N) H( J7 h- wto setup-plots
- C) r7 m+ q7 P, ~! h& @. J" m8 y9 \& C
set xmax 30
3 Z" J: B! g; _+ a0 O' b: N

( g- Z: a. J9 t! p1 x% {set ymax 1.0
; f# E; P+ S# \: D1 M* g8 I$ h

; s; \% ~1 U2 mclear-all-plots
) A1 `: {/ t% N
8 o6 Y; [; x7 g% p3 w& ^
setup-plot1

- T" [7 u; v5 b
8 H6 U9 R3 ^% B% h3 Isetup-plot2
" G* u" L# _9 V1 p

& i+ ]/ a# Q( F' W+ s2 @7 p2 ysetup-plot3
7 q8 X( z" l  H7 q3 Q
end
" o3 W2 K5 \5 p9 S. D6 k7 n) ?" K4 z3 |# f1 v. S
;;run time procedures' \: H2 a1 d4 s4 @  Y% S) X$ {

" R- f; D* @! x# p+ [6 \+ Zto go
7 R, L- ~; Q" D5 g7 \( W( q9 Z& u
& l0 K' d2 Q& e+ i& I9 f7 xask turtles [do-business]

+ s2 F" e& n6 b2 r% u& f5 Oend
. f$ v+ T8 T% q9 S, _" w5 C, f8 b
$ p0 j8 l& z0 M* i3 b' c2 Cto do-business $ H! U) B0 b& \# _1 {/ \, A
; ~! p# s% B2 K. J; m3 U! V

5 f# j) i3 K. C- d  srt random 360

8 z/ G; `8 T# p# j* l( i9 F1 F7 Z& j% _1 N
fd 1

" ]8 \& X- O% T, ^1 O# M5 u* @. G9 m& |& B
ifelse(other turtles-here != nobody)[

  d- B) K( W$ B  E8 c5 C, J- [3 b
set customer one-of other turtles-here

+ s- `$ S" U- Y$ e* Q
) h$ g/ Q; X2 u6 t+ J;; set [customer] of customer myself

$ M! y1 l$ _. O; |& a# K" r1 z9 r  N
set [trade-record-one] of self item (([who] of customer) - 1). K) P0 R+ z* m9 [- M
[trade-record-all]of self! N2 Q9 J' e" W, N" o% w5 v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" v; _9 k2 |* o! n' w
- d) l3 i" _% Vset [trade-record-one] of customer item (([who] of self) - 1)3 M% V/ @0 U1 q6 W. V1 D  b
[trade-record-all]of customer
; e' T; `2 d/ C( k: L0 E0 a

8 G" `- W7 O/ mset [trade-record-one-len] of self length [trade-record-one] of self

4 Y! I9 F' B  f0 ]5 s* {
- c! b! h8 k, a5 Jset trade-record-current( list (timer) (random money-upper-limit))
3 q3 S3 r6 h* z0 v3 |
( q& D, K, j+ R0 y; b% H7 {
ask self [do-trust]
, {# ^, q3 N& I6 K) B& X0 Z% H: X;;
先求ij的信任度8 v# s9 W4 ^: a

, c! t* r& k3 A9 S. I" s# M3 oif ([trust-ok] of self)5 X. K. Y+ A  i2 G1 L1 t* ^+ o# W
;;
根据ij的信任度来决定是否与j进行交易[! i- J, w" }, G5 R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 \' E1 v( w/ c7 e6 R$ j8 O
' r; y0 }+ }3 E: G* H& p7 M[
# V! L& c  A- h
  P" r6 W; `* z6 F& Z
do-trade

% K4 k+ J: T, o" m! R- Z0 p) s* F4 k6 A& E
update-credibility-ijl
0 B$ P1 E" R' {: l4 K5 k

( R) G3 n$ o6 t8 S: i6 @& ~update-credibility-list' }: X4 I1 ?6 b3 s

# T6 n3 P2 P9 j
0 I3 ]. B3 `: S5 H9 _$ {. C& ?6 wupdate-global-reputation-list

* `* \8 F# F$ C3 m; V
& x' k: G7 y, S6 e  gpoll-class
6 L' ~9 z& w/ g+ b! m7 U. n5 w

4 j  r6 ~1 l' X) M' Z6 Y- L* eget-color
: C* L; M0 a! Q* U

6 O9 i! i& K( `- V]]
5 Y: m1 `4 |: F( M* u/ X) L
; A7 c: @1 k" x  Q+ d7 I) D;;
如果所得的信任度满足条件,则进行交易$ T" ^2 m, ]. L! m% G1 Z
4 V7 G" G  e; F- L
[

  v9 _7 a% ?+ l2 T  e, [0 g- s3 f- ?- _$ \5 K
rt random 360
1 h5 L+ O6 h* H' ~
6 @; w) K) Q$ Z
fd 1

: h9 I/ x  V3 }1 L) l7 `* t6 u9 ^: K% @
]
) k# V+ K, z( @, M; r: P% ?; W
# @( R- _) ^$ C/ v9 I% ?
end

5 j8 {5 d2 g5 h8 Y) C" V5 \  A, w
. i' t# s8 e/ E- B1 W9 Gto do-trust
# d5 _$ v0 _5 ]7 oset trust-ok False
( @; ]: {$ x7 l! \3 ]
6 g1 _& u! T. c6 p
  y$ J5 k% I( H( A/ O7 F' f
let max-trade-times 0
$ ]4 Z2 t* _  u, J/ |" d* }2 \foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 T# l: l; j& @8 h1 S5 ]" b
let max-trade-money 03 r5 @$ v2 V9 I" ]5 ?4 @/ I. C/ s
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  ^  ^3 K* P! i  z9 @2 g. nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  i$ ?# A1 ~! V( H, A  p
0 w( f9 o& Y% ?/ p, R
9 q9 \0 Z+ x/ b& g9 c4 w
get-global-proportion+ Z6 @  _3 @5 u; }7 Y7 y) I
let trust-value. f9 s" R" K" J# o$ X
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)
8 x+ i, S2 ~- Z+ T: G3 i2 ~  `" x  T% c
if(trust-value > trade-trust-value)* V4 X3 \1 ~4 p/ O) _# q
[set trust-ok true]" o9 i/ e# E& p3 R: ^1 [, e! \2 b1 ~, G
end
! f3 O5 D/ ~6 q! }9 E; x5 A6 z8 u/ x
to get-global-proportion
( _, o0 \1 Z) |$ ~+ o  fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 [, }+ n4 e! ^1 h% e
[set global-proportion 0]
# U3 N# s( Z5 z" g0 a9 r& ^2 g% O[let i 0
3 D  Z) q# U7 y; elet sum-money 0  r! g( E" j+ L, n' p; K& u
while[ i < people]
' p+ k3 F: ]; A& _, `3 k[
$ Y* ~  v- `* u; @8 M1 {& \9 jif( length (item i8 R8 P  u3 U& O8 H  D5 R- J2 g0 {% o
[trade-record-all] of customer) > 3 )
1 S# [6 L! |1 }% E
[
$ U, u5 {/ `3 S5 I: Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). [) [% Z2 t) S( l' d
]/ [! y7 x3 Y  }1 _  S/ S
]
# Y7 u7 k, l0 G9 G7 }$ w/ y- |* }let j 0
$ P$ B- k8 A: Slet note 0
& V4 ^; i& _2 xwhile[ j < people]
5 O. s1 G- i. h/ h# l[
/ C: L" f! ?3 p8 pif( length (item i
& _7 q2 k7 o: Y# x$ v: L7 w9 p' I[trade-record-all] of customer) > 3 )
6 d4 M6 v- Y& `4 ^; y' @" z$ ^
[! z1 u/ c+ P% ]4 e% ]
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ X2 K3 e2 ]; Q( B5 w! d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  `3 D+ ]* @4 Z2 _% [* Z9 C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- J- V9 N" B; P5 C$ M6 z3 Z! W]  P6 I6 R+ ^- |
]
$ T! d9 o2 M6 A  a  l* t( F- e% yset global-proportion note
0 t8 l* N" F2 V. y6 C4 `]
$ I! n( ]$ ]) X2 Bend
! b! R1 Z. }, h% W9 Q3 c0 k4 b# {0 p8 u% s" G) |! B
to do-trade
) r5 S& P5 l( f0 I1 v# w' N7 r;;
这个过程实际上是给双方作出评价的过程
6 @, d+ e  }2 f6 K  [2 hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 i1 X+ K6 r2 ^, oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, T. j6 [& _" ?" T9 u
set trade-record-current lput(timer) trade-record-current8 e6 \3 B. Q3 p: P' L
;;
评价时间
! b3 \) |' i" H1 [0 [ask myself [
( C* t% D* F& r1 }% M5 hupdate-local-reputation
# ^8 o4 g7 P, b% lset trade-record-current lput([local-reputation] of myself) trade-record-current
  s1 N4 o9 G! Y1 S6 u: {$ P& z]6 [; g% R4 a4 S% O- ?
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% [7 Y' S3 x% w3 s! t, k;;
将此次交易的记录加入到trade-record-one% A5 `/ l( S& Z5 N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ n/ j& Q$ Q- c7 F6 N
let note (item 2 trade-record-current )
' m: n" X0 ~% s" I* Oset trade-record-current
. Y4 d/ }. _) @& d(replace-item 2 trade-record-current (item 3 trade-record-current))
" R5 q; P' ~# ?
set trade-record-current' ]& [7 n' W8 r/ ~" M7 H
(replace-item 3 trade-record-current note)+ ?2 }+ Y$ J! a

4 _- @! J! a- V) P0 @% E1 ~' ?
  b& N! M; f: _: \8 `' o) I7 S( d  x" |" R
ask customer [/ F" C- j8 p. P& t  u
update-local-reputation8 _  p2 R2 [0 g! b* ]0 m' C# k
set trade-record-current
( v  e8 R( ?7 P/ ~5 r1 U(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 e+ K/ {7 F1 x
]
7 a4 z: Y( I- g  ^( d, x, R9 b5 N
! h3 r' e% |1 ]0 y5 L" q
/ f% x, v' y. O  D5 n$ y% i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! D% r6 q1 q* r7 E) s# [4 T

7 ]8 t1 l# Y! @4 R* s$ qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; w6 C# i1 Q9 R- `* X;;
将此次交易的记录加入到customertrade-record-all
& f& o" {# J2 g8 g2 B' q8 Rend
: _1 X' v: \5 {! q% [2 ]5 Y, n; {) D( w/ G' k& E: E
to update-local-reputation
/ ]8 t/ n, Q0 `6 R& w# zset [trade-record-one-len] of myself length [trade-record-one] of myself
# a8 Q* o, S: g! d; S' Z. t- o. b
7 l/ k) s. |5 Z' c, N& v4 w0 V2 Y; Q, z5 S! W. d# F
;;if [trade-record-one-len] of myself > 3
& F9 G) a( G4 B+ a- K. m+ u. S
update-neighbor-total
  S+ C# w6 m$ p% u7 \;;
更新邻居节点的数目,在此进行' M% \$ R( j' D% O' e
let i 3
2 s: L0 q- b. `: O: u) G/ wlet sum-time 0
/ e: f% _  i7 \& ?  \, o0 C  {- Zwhile[i < [trade-record-one-len] of myself]: e# Y, [" j& E
[1 C. s  G8 N* E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); y6 T. N/ w# n! h6 i2 c
set i) [7 R0 p+ @! t% z6 g3 R
( i + 1)
7 S+ u$ g; D6 q0 @% F5 J
]( d3 ?# l: n8 c0 m
let j 3
+ y% L/ G% [8 Q* p7 Jlet sum-money 0
# t# b, C4 M* W5 n2 Qwhile[j < [trade-record-one-len] of myself]
% `1 t7 G- ~8 ~4 e" }& u7 {9 j[
2 @) v( |# G7 b: s6 A: O: f6 yset 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 S% G; d9 b8 ?% y4 z* |
set j+ A3 K0 t9 D4 x$ B3 @' C
( j + 1)

8 f7 {2 m1 U# b1 T/ Y" v- G]1 ?  F3 Y7 @% U
let k 34 u- Y( B7 A# b) K& o& H5 V
let power 0
- v/ U$ `! F6 X. Flet local 0
8 h- n7 O6 y  \2 O  U4 Z  Gwhile [k <[trade-record-one-len] of myself]
7 |& `) s! C- S. R[
4 b) {5 Q4 x/ T1 ^4 dset 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) + O1 f4 E$ S1 I$ ?6 w. T8 d9 @
set k (k + 1); {$ O( E4 X0 }+ h
]
" g- Y. B5 K1 R/ r+ Y/ r+ }) W9 N, yset [local-reputation] of myself (local)' m6 d! g8 U7 ~1 O
end
5 j' x) x8 a* q6 u# |- s
7 a9 t9 m: `8 y: mto update-neighbor-total" Q3 ^# G: t5 u" y' @$ ^

' Z6 d" ^1 U$ t' E5 N2 E8 n0 y0 Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& T( f' c/ ^) y& A$ D6 l8 K! y
' _5 Q/ V( ~' i& k  R
. K8 T  K1 j" v# }2 W: n
end; S) {0 z/ z4 I$ P7 }) q$ o" y
% s! a  ^: }; _  v! f3 p, O6 t
to update-credibility-ijl
4 }, {; D2 b/ d- j3 l* `- C! C: ]3 t
;;
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。# R+ \, V1 k1 E$ f- c! G
let l 0/ R$ B# @/ f7 d
while[ l < people ]' c% L/ O+ o8 _: |  [" h+ D+ s
;;
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 m0 E! C! D2 f) Q, p" g
[, w7 t( P' L: y- X- X; X+ z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 a* z, R5 W% N) S7 L5 ^
if (trade-record-one-j-l-len > 3)- R  M2 M" J/ ~. g# p9 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-one
: P5 z& \+ C" f, v! N  Elet i 3. {& G; b! t' q" g* F6 |0 R0 V
let sum-time 05 v# u: d9 [+ c0 s& p2 l- s& B
while[i < trade-record-one-len]; N8 n( z! Q2 `# p" g' _5 f; O
[! W4 T$ k  O! P2 f& J+ I" s6 j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  y8 i1 @  x8 ~7 y
set i$ V" s5 H* s7 N  }5 \1 Y
( i + 1)

8 v# t1 ^; x3 `- M4 r7 E]/ u" ?3 ?: R* L; b# e6 A% u
let credibility-i-j-l 0' b  W, n$ h. v7 i' B+ ~( f; O" J; L' k
;;i
评价(jjl的评价)
& O$ J& \* L; C; |7 Y* W* f$ Jlet j 33 v) S: \4 \- b2 O% W
let k 4/ K: U! N+ p( x- j% ^
while[j < trade-record-one-len]: h3 W# |2 A5 d# P9 }
[
$ {, Z/ d0 S6 Gwhile [((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
$ t3 k2 s5 T9 t. b6 f& W$ Pset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
1 |+ n% g% |. q4 U: I" `7 wset j: V2 {, z" `% n4 p, a+ r& L
( j + 1)
2 r+ m+ L2 y7 B& v" y
]
* r! h' g- Y* [9 uset [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 ))
" G( Y; Y  D0 @; F0 O$ u/ O: I% a6 |5 w* j1 _# J

+ b2 }. z/ }4 m) F% vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 {$ R- ?# W5 c1 ^4 ]) ?1 _% i
;;
及时更新il的评价质量的评价! b" s5 z) I* O" B: _: [+ i
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" N, }4 u3 C+ c, A3 K  }! Y0 }set l (l + 1)
8 f" n+ P# C  b3 K]
4 d$ v/ ^2 j. M) Eend
( q% S* \7 E3 V* T
) o* r& Q+ o; \* r: ~1 gto update-credibility-list
/ j) j9 q# h# `) z* U' ]0 Dlet i 0
6 B+ c8 z  D  y, P' a# O- Zwhile[i < people]1 n+ T, V- z) P! c
[3 T8 W! u- Y2 W4 q/ u: s2 ]
let j 0
/ E6 i5 x3 }5 W7 D# F/ l  [& `let note 0
2 ]9 D8 j8 K. R! z" ~# A! }let k 02 ^- T+ K1 K8 Q% P; Z7 q
;;
计作出过评价的邻居节点的数目
* n2 v; g. R, e7 awhile[j < people]; f- |: Z1 z9 W/ h# T4 s
[- P% j& R7 ^8 P& x/ D: `
if (item j( [credibility] of turtle (i + 1)) != -1)
( H7 t( N9 v$ q2 k! u$ D;;
判断是否给本turtle的评价质量做出过评价的节点
5 c" _. D$ M! M8 \+ @! S8 k[set note (note + item j ([credibility]of turtle (i + 1)))* n) G8 u& d7 N4 u/ s/ n6 |7 b1 r
;;*(exp (-(people - 2)))/(people - 2))]

3 n2 H6 m* U# m: f2 s- {set k (k + 1)$ J3 ]; l! K6 S
]- ~3 W' _3 y( Z) [6 w
set j (j + 1)
' K3 ?3 x2 k& N! g]
6 A( p( l# H8 x7 m  pset note (note *(exp (- (1 / k)))/ k)
0 z6 r" Y9 v* A: J6 \  x2 Bset credibility-list (replace-item i credibility-list note)6 m9 M) T+ Y! J( Z0 o, g0 ?
set i (i + 1)9 j8 n' J& ?# G# f7 s$ X
]
3 W: d  t- n. ?end
2 r5 d0 I2 t" {/ z) v- b8 i: Y' K* j7 Z( R) v# A
to update-global-reputation-list. C5 H; h+ z% h
let j 0
5 O4 J2 K9 d4 v$ ?while[j < people], N9 S" T# T, ^9 v
[- e6 s. m9 w  L! C
let new 07 r: {. I, o# K4 `7 `( ]
;;
暂存新的一个全局声誉' K  u2 i5 q. x: s" q) H
let i 0
1 \# c, N& O- E: [  d9 B! u$ wlet sum-money 0
7 k' R' W1 W$ V' M, e6 ~. glet credibility-money 0+ l) {+ a/ K2 ^
while [i < people]/ L( Q) Z' [3 c6 \) t. g: F5 a
[" E  i; J! V* T$ U$ b' V2 a: O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ Q- N% }: Q5 `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 i  m: l  c/ M* t
set i (i + 1)
4 f3 h, h% m7 {& f# H]
& i9 m6 C  D4 X) z4 d1 g) mlet k 0
2 Y! Y4 j+ E8 ?5 V0 g$ ?) Nlet new1 0
5 _% I$ Y5 G2 b) e+ C/ ]while [k < people]" B2 C6 T- V6 `) ~
[
! M3 g2 H2 I* G6 V& lset 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 Y5 G- l% f7 i. V- K0 tset k (k + 1)
/ i$ K8 b: P& D, S]# s7 p+ Z3 Z6 c& |3 S3 i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 h4 n7 ^, x4 X' M* y2 F0 h+ Z
set global-reputation-list (replace-item j global-reputation-list new)
, E$ _! X4 N0 k! G; o5 g( @3 ?set j (j + 1)/ L9 u  Z0 |& J" R: |. \- S, t5 \
]2 b  |- h* E/ r% x( y
end
, @, m/ U* S% I! R5 r' `8 }# ~+ D& ]& H3 j4 N8 ^9 c
5 V. r# ^, v7 r2 X/ b
! M. j6 `  X7 V, X
to get-color" m8 l) ]6 }& [& j$ f0 L( O
/ @6 C8 P5 p* h
set color blue

. J; L# k! e7 f% t! \& {9 wend! i! H- @, W9 g

3 `4 D0 Q: x9 D5 o' _) H  Fto poll-class
) ]6 R; ~& L( ^0 }# ~7 E3 rend9 w2 \; N3 r0 ^3 X6 C

3 Z7 I! U" m3 j/ i5 w/ J. Xto setup-plot1" Y0 R* d& O* n, k
+ K5 q3 C& R; t/ o' Z# E* Q1 Y) Q
set-current-plot "Trends-of-Local-reputation"
3 d# c' p9 L# Q! A8 V
- X7 i& I, h( @- N* |% q
set-plot-x-range 0 xmax

5 I: U' P; s' h$ q7 I1 v5 y  j! \( w' g4 l* c
set-plot-y-range 0.0 ymax
" S3 e% q' G2 f4 o! p9 U7 k
end
6 r" m/ ^" p0 @2 v: L
9 ?; i4 i: |* Z( N& Sto setup-plot2
- v7 W5 U3 o! z. N0 h! k' |$ J, V2 i0 ^  g5 t! k
set-current-plot "Trends-of-global-reputation"
" A# i5 d: R5 c8 g  m

' N$ j# n# J* Y8 ?set-plot-x-range 0 xmax
: w! ?# K& P& ]# L8 @, C9 a  ]; e# E

3 H. L1 k* U0 h# Hset-plot-y-range 0.0 ymax
- C) a; ]0 I) ?) L: @% X
end
" s- P# ~. [) m6 Y7 `7 h7 R- w* ?" ?3 Z9 X& E5 ?, b) h+ L/ q
to setup-plot3
6 k3 L; `! J7 t, Z) w: r( x5 ]% x: O/ i' I+ N7 N5 F4 Q
set-current-plot "Trends-of-credibility"
6 w2 @4 H; O$ G- F/ @, k# Q1 ^, P2 W
) {3 b9 @- }" K
set-plot-x-range 0 xmax
5 L! V& b% z  J4 ], I% @

+ r2 }0 v+ K. ~% e3 Vset-plot-y-range 0.0 ymax

8 T: N7 [; m6 F% x6 W( \5 F7 s" H1 rend- k% B# Q( X3 @) _8 Q7 L

- Z* {4 g& }- W& f, xto do-plots3 Q; e$ A9 D% L7 e" E
set-current-plot "Trends-of-Local-reputation"
2 M/ R7 \. C4 p' |set-current-plot-pen "Honest service"
9 w4 P3 [" e, |! T2 Uend
5 g$ F' H7 t2 R  A* [/ ^% _0 J& D. D3 s% X' n: T3 S8 E  R
[ 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.7 a( s9 q5 m. E% c4 n# @0 ?

. {, O; O. j  Q  }. D% f4 Y0 h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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