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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:/ K! @7 F$ H5 J, \+ T* C
to do-business ' B8 h0 k; `5 M& N* X0 _1 l6 U
rt random 3608 P* v* W" ?, z7 B+ i% X' Q: y) u9 e
fd 1
8 [/ K1 P9 P0 Z$ G- K ifelse(other turtles-here != nobody)[
9 ~. c) P3 ~+ K- f" L/ n" \   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.* J; Q) t- v# ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 ]8 q7 S8 R) i5 P
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: F" [9 i1 E  r% }5 o
   set [trade-record-one-len] of self length [trade-record-one] of self
7 n2 J+ c" g# t# `# k   set trade-record-current( list (timer) (random money-upper-limit))/ b* j  e! {1 M% a% S
) s* {6 n2 D% P* v
问题的提示如下:
6 e# s# r' f' K! J. y. x( u  o3 x1 c6 b# N; c8 n  u
error while turtle 50 running OF in procedure DO-BUSINESS+ j' n8 ^% _9 o' P# M$ \, y
  called by procedure GO9 D1 ^, H8 e# B! K  D% s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) H$ W6 D- U9 m- t- g; b% D" V
(halted running of go)
# d4 r2 F1 @- H6 W6 `! V0 k2 A$ O7 Q* A% ?
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~~
% f9 r* \3 q+ m, i3 m  g; F& I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, f2 H( [$ r+ a
globals[: a4 Y2 Q; K3 E: W
xmax
1 ^+ @2 }+ {3 A5 Kymax" q0 ?" N4 ?& Y
global-reputation-list! t6 p8 v4 z" X5 \6 g- v1 P9 U6 n
: N9 g6 d. p  I0 F  W& c$ ]% p
;;
每一个turtle的全局声誉都存在此LIST% v$ w8 Z8 [) V8 g! q# i. L/ Y# s
credibility-list1 Y, x4 n* x! l! M
;;
每一个turtle的评价可信度
, Q% i! A0 z3 V  ~& xhonest-service6 e$ ~, Z! e) g* G7 i
unhonest-service. T" L' s+ k- M( c, k5 t
oscillation
" ^. T+ e8 z$ `; X' Trand-dynamic# P- W. @% Q8 @  ^( f; B" J7 {# e( v7 `
]. C. e( e6 \$ d8 Z* h

' B% w1 O6 y8 h6 p2 s6 W. T1 xturtles-own[9 E$ F7 u- [3 Z2 I; m  k
trade-record-all
# }1 v: m' R% u$ [, G: F/ Q4 L;;a list of lists,
trade-record-one组成
  e. Q* _) Z4 c: E$ H# Gtrade-record-one
$ {& E" [. l) P2 D! r* R& 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! I8 R" l% B$ I7 \1 W
) v1 W/ p9 ?1 |" c" r* I
;;[
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]]6 V: i* m2 K' g  b
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]
! L7 \, V6 E: Q" h2 Z5 ?  icredibility-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! y2 F# e4 N6 [% M: u8 y7 b
neighbor-total
  z# k; {/ R% p5 b/ u( k) a) @;;
记录该turtle的邻居节点的数目. j$ w7 ?0 X- `1 n8 V8 [
trade-time
) t; \8 ~: c& n7 x( @- C( B;;
当前发生交易的turtle的交易时间
2 ?. [! }8 P" V% Tappraise-give
. g# }3 c) ]; z2 B1 |4 }; U7 r$ Q5 z;;
当前发生交易时给出的评价
& m; P! t2 Y2 T$ t; p8 d/ rappraise-receive9 J7 _  l& w/ D  Z2 P7 x+ L
;;
当前发生交易时收到的评价
5 p' k3 p) N) p4 d5 y4 Nappraise-time
5 }' G$ r8 s) S; g2 G5 {% [$ D# K. |;;
当前发生交易时的评价时间
8 |3 o2 o; \+ M9 Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 w+ |2 z: r( B% q* A" ptrade-times-total1 j( ^6 Z3 Q" O: B8 p/ d2 |
;;
与当前turtle的交易总次数3 g+ ^2 s* f& L7 i# C
trade-money-total7 N% r+ A: F' J, X- X# W
;;
与当前turtle的交易总金额
1 B2 _' k+ ?' J  B' hlocal-reputation
% r: f1 f$ O# l3 nglobal-reputation( G/ ~+ ~, Z2 k2 v1 v% G
credibility
1 y, n: q4 a( f+ P9 m6 Y;;
评价可信度,每次交易后都需要更新
% j3 m# T1 }8 Jcredibility-all, @* [* P8 I9 d. }6 A, Z0 S9 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& p* ^  i/ p7 E* c9 U$ Z3 _

3 S( ]% P, C, X/ X( h$ e6 E! 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0.5
; l1 ?/ `" P5 p3 {; n5 g6 `/ }credibility-one
0 s7 Z0 |( H0 G% E. ]& e. |;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people+ B5 v9 A% ]  ^+ ]
global-proportion; }5 q4 B$ h  b! L& {& J+ B  \
customer4 A: g; K, h3 G
customer-no
/ I3 [5 m+ o: }( h0 c; N! Ftrust-ok/ H; m9 {4 F. f  |4 R/ q# u: b3 ?( A
trade-record-one-len;;trade-record-one的长度
) y1 n2 b( S# g: a' ~7 `: R* S, t]
6 ^: W8 X1 B  Z  o! g6 F+ t3 {
3 e; q  W* C# ^, o;;setup procedure
# F0 l: h5 ?9 U6 q
( e( }. T9 |: |2 Uto setup* n3 D4 w4 t  F# _8 {

9 Y7 s& i' h0 d+ \( Z* Z1 pca
* b: u5 f% v& `* w# u
5 ]! L  b- H, v2 V* L: m+ v/ f
initialize-settings
) e, _' B6 h6 z

. T/ X! @# G3 p/ t6 M4 \3 w, }crt people [setup-turtles]
, ]: X( D* @$ O$ c1 s/ E
4 j: k0 G; q. S! R
reset-timer

" c% @% V7 R" _8 l
' s+ d: C4 ~  T/ ?0 xpoll-class

) P4 `6 n8 ]+ a' o& E: o# }8 w* ^4 X( e& @. Y/ n+ l1 h  {& Z$ S; N9 N
setup-plots

- h: p" s$ P$ e* E  a5 X  [; i# J: t& n, ~- E6 n
do-plots
  }% E3 D5 R3 c. \
end
' v$ Y# p; G! M/ \0 P5 q) P0 T1 K" t+ ^
to initialize-settings
7 Y. P/ G3 ^. _  c  N( _" r% @/ C* q# }% D; F# d
set global-reputation-list []
- g8 @) E/ a$ v/ o* Z) c

6 M; ^1 {7 @0 Z: M( _: T$ ~* ?4 t1 _set credibility-list n-values people [0.5]

: n5 ~6 Q9 l& t7 \1 o" g( W" _) X" s3 E; p3 {, v" H% Z
set honest-service 0

! x& \- t& f3 z( d3 z6 R! B0 |' o8 e
set unhonest-service 0

+ ]$ k2 m! t; S# O0 Y0 u0 w' A, c' `
set oscillation 0

' J. h0 K1 b, x' e1 q3 i9 n2 [8 O5 i+ A! g
set rand-dynamic 0

1 h7 z) Y$ s3 wend. u0 I- W9 q+ }7 |
# ^) b  U+ L$ Y9 q9 l- M' n4 z1 f
to setup-turtles & v* P5 e5 F2 F9 Q4 G4 Z
set shape "person"
! @- @% t1 d( P. Msetxy random-xcor random-ycor; r, d) r+ K* E: N4 ?) U( ~
set trade-record-one []
9 X& y5 O# D6 E6 ~
- u, z/ Z' K/ k" c! i% D
set trade-record-all n-values people [(list (? + 1) 0 0)]
. |8 r1 a# t# V; q+ T2 b2 g8 H
' w& }: t/ B  q8 S
set trade-record-current []& j3 l4 a- r9 F  D3 t
set credibility-receive []6 ^  x  Y! V* Q2 ^: g8 F  c
set local-reputation 0.5
2 [7 {, r5 I; wset neighbor-total 08 j8 ?" ]7 ^" z! n; O6 M4 s: y
set trade-times-total 0! m% W' [/ U; Z
set trade-money-total 0
/ ?5 u9 O) p, K& q4 e, A/ qset customer nobody* u2 D' C; ?+ ?2 Q( g+ ~
set credibility-all n-values people [creat-credibility]
2 f2 \1 j# h$ L. c- ]set credibility n-values people [-1]
+ c0 _1 ]) x2 G$ P5 Lget-color( N& m5 j0 w( D6 \1 M5 C: E

1 T5 F0 H$ d# {end* Q1 R3 ]$ W- j3 P3 {
6 |& v" K7 {/ l- G
to-report creat-credibility5 `  [: g; z' T. |& i% x. Y
report n-values people [0.5]6 {( d6 Y3 F$ B$ z
end2 l$ |, q1 ]) w5 }+ P7 p

7 h# g' u  P7 f( q8 c2 G/ v, vto setup-plots
+ W: \1 x' \" ?; n+ h; v& N, |9 u- Y6 c$ S6 g5 {  j; R  g
set xmax 30

/ `8 J* v4 j% Y# l. G/ G2 J- Y7 t+ l1 ]  F% K# p
set ymax 1.0

  d, p3 t- H! N  Y5 |5 v3 {% @
! U# _* H  U6 @7 F9 hclear-all-plots
6 v! l9 K7 N) b/ W3 r

; K& [$ q, V7 {2 o3 Fsetup-plot1
9 y* ^) I; @. F+ W4 k' \$ p; @

' m& w( K; S" I" g# Dsetup-plot2
( a: m1 D" e" b( H9 U& T

5 l: G" j; u: P" Fsetup-plot3
( T; W$ A. p7 m" I# X; n/ l& x
end) e2 N  w' N$ H; r5 T: e$ u

2 F: R; ~5 F0 X/ M7 L, t/ z0 k;;run time procedures% `/ ~: _+ i, Q5 q& K

' `! j" H. v4 C! pto go
: }& s* y/ y3 j0 ~6 ^
! p2 g9 m( w4 C* r3 n- W/ iask turtles [do-business]
9 n" }; ?$ Q$ j$ j9 Z/ Y
end: o0 ^3 I4 Q& c; G; l: \
+ n8 j. v8 m6 @/ G
to do-business
! L8 X) C$ t3 u* P
2 T$ m5 b  g4 m8 Z, @2 }

& r0 P* J7 K$ U  M, Irt random 360
) `- F3 S& Q/ P

% c' V: ~4 j1 l2 Ifd 1

" K- ]7 [  P/ o+ M
' J2 e5 N; a% p6 cifelse(other turtles-here != nobody)[

0 [" [! F3 c4 \8 h6 k& C9 M
) X! n* k  c+ [. O# gset customer one-of other turtles-here
" r. C2 I. t" s5 p- B& }$ q

' R( I) O+ J: Y5 F9 A: Z; d;; set [customer] of customer myself
& K7 A' ]* u+ T7 Y7 ^/ L7 i
+ m, T2 H$ r/ e# B% z0 N+ e. C
set [trade-record-one] of self item (([who] of customer) - 1)
! t# }4 j, c6 \3 x' i[trade-record-all]of self
8 w9 K& ~2 \% v4 ^0 b0 W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) C+ a6 {4 V5 I; d* U9 _
2 S3 O& ~; X+ W& _8 nset [trade-record-one] of customer item (([who] of self) - 1), q; ?; _2 K! i
[trade-record-all]of customer

' B* Y- k/ _* e1 Z. e  p. y0 J" J, F2 y: a3 b
set [trade-record-one-len] of self length [trade-record-one] of self

# s6 m  ^. S/ z' F. ^1 W7 H% d/ x+ F8 |+ x
set trade-record-current( list (timer) (random money-upper-limit))

% I5 w' b0 ]& R8 z$ x0 j( p& h4 U% b; g& T" B. E8 q
ask self [do-trust]
1 r; @+ t, f! n! u% T0 W% c( k; [0 I;;
先求ij的信任度
. v0 ?) V; U6 s! ^
( j/ H+ j) u' M6 _6 U3 iif ([trust-ok] of self)2 I8 ]* q' e: j5 k% E
;;
根据ij的信任度来决定是否与j进行交易[  F3 c# v! X: C) P$ H. x* f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 N% f% }4 B# W) ?; m8 z1 L9 L
6 m+ A: `7 X; O( v* R, _) O
[
( S5 v# v" W' ^9 j! R. v

. Q: q. ^4 N# _  @! H3 A2 \% Ido-trade
: f; {1 \$ o% l
  {: [2 D7 h- @! n, O' z
update-credibility-ijl
; `2 f6 j' J8 l

$ N9 H" b( X! M" U! r8 dupdate-credibility-list! L3 S% r- p/ G4 [0 P! Y7 I- a

' _& p% G1 G# D$ j
. I5 n4 T/ ^& J- F) Dupdate-global-reputation-list
* S9 w) c" t* q
3 s/ V: J# [4 S4 o7 h+ B; \
poll-class

+ n( ]1 L2 |9 J" n. ?! q3 D$ k. a+ q& N) }  P
get-color
% H( P: Y  g5 \0 P$ f5 a
$ B' Q6 L9 Q) ]2 R5 j  n' E
]]
$ j# C$ F! J$ g" j
* F. u4 T; w2 O; C2 G! g;;
如果所得的信任度满足条件,则进行交易+ W0 ]6 @+ e# T& \
* m* }. w2 N* j# h  k
[
: J* W' g; X) K  s' h3 k' y

4 X" ~2 P- V! H+ r" G  ~0 Qrt random 360
, a8 m% _" ]: U' F6 u- m5 i/ x

9 E2 n/ G9 f  L# Vfd 1
3 f, W2 [" I& c9 K! Z
9 m4 A0 Y  u. J. e
]

. L/ f6 S3 e. }' M$ y* \& N9 I! _0 @( _- Q4 @
end
' f; Y3 I4 w+ Z( a- e3 S1 r" ]
2 h4 k; _2 t' b: H: ]" F0 Y+ ~( Q
to do-trust - h+ L: {9 u  b9 h# r
set trust-ok False- J* D4 T' V( e+ x7 A- J
" P6 e* v3 S8 d! i5 I4 Z! V
- D/ v2 f# }2 D
let max-trade-times 0
; P. M2 I0 _3 V( N- Vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! e: m: y: B/ k6 t) o9 Olet max-trade-money 0
* f3 q% V5 }( S1 \, w) Z- I; \" g6 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# x4 a: H# ^' ~9 ?$ X
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ T! y  x6 @" k" v

0 W) f, [& f4 m" L9 p

- M& j* W! l6 bget-global-proportion; k* Y8 _3 |+ }" x3 b/ K
let trust-value( b# Y4 r" [, \6 s) `, U
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)

, U+ r+ l0 N2 zif(trust-value > trade-trust-value)
6 q: Q9 `5 b- p+ z9 L- X[set trust-ok true]+ Y, A& j* s7 T/ @& b4 B" L1 j
end
! u, H  u5 L& v, s# {: h
+ L6 w: A7 j/ q% N2 w* [+ E7 [/ Wto get-global-proportion
! a; x& h: l# l$ Q& ^$ Bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 Q# D4 y" B3 I. ~+ X  y- y[set global-proportion 0]
) T7 }! [+ T! h[let i 01 o% T6 p, I' k, `" `& X8 \0 X  U
let sum-money 0
' ~1 P( w' }3 c4 k* a7 `6 Mwhile[ i < people]2 E# h+ J; `3 A, D7 o- x
[
' W0 V) i* J# u$ t& d, B6 w0 X( Qif( length (item i4 W; g$ L  |8 N* ]; x
[trade-record-all] of customer) > 3 )
! Q3 C6 k# ?" e
[
- l( S4 k+ W$ t& ]/ R2 Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# n9 U- E0 Q! e$ l) U
]0 I! A# h0 f- G! H" Y
]
7 @6 J" h/ ~0 {0 H% V, w" hlet j 0) U. J- ~$ K& v& ~  H! {8 V
let note 0
7 a- H# b6 E; k" cwhile[ j < people]# p4 K+ s6 k2 h1 V# a
[' k" v* L: j/ M
if( length (item i
/ s* e6 K3 U) m" U0 i. }4 H[trade-record-all] of customer) > 3 )
# _+ w+ R# c8 e% _  ~
[
8 k) D3 @" x- ^7 \ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ j: T" R1 K+ I+ n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 B4 ?& N/ f0 `1 C( b$ Y! u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: W7 I3 q3 y4 E: z" V1 ?3 a]
" y! I: J* ?- w  S9 Q9 _]: o, b2 _- x/ [6 O8 Q
set global-proportion note# ?3 z9 k( I1 N: K" y2 r
]/ U  j. F& Q6 |+ Z
end
/ e6 \; I- D4 b# p8 q$ G# e% w2 I7 Q( Q9 }' l4 E. D0 m/ l
to do-trade
- X/ R. \1 q- x' O8 ?% h;;
这个过程实际上是给双方作出评价的过程$ k7 B7 x& k7 [( n- i$ \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ M! y* F, Z* k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& K+ c) c8 F; ^& qset trade-record-current lput(timer) trade-record-current: z( d# z: a$ S& I
;;
评价时间) N$ \8 W& `0 c6 F0 n
ask myself [
; T+ b: q& I: f( lupdate-local-reputation
5 i! |! ?% W) K6 V9 w, _( B# O6 b( b* Vset trade-record-current lput([local-reputation] of myself) trade-record-current
+ u5 G6 V; T( _- D' Y]
" L4 G7 H# P- ~$ Y( f3 s8 qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% I7 ?* s- }0 E# [
;;
将此次交易的记录加入到trade-record-one
; Y: x3 D) M. D% T$ eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* R7 Q8 {: |/ Rlet note (item 2 trade-record-current )
$ _: X3 t6 z. x/ K8 j$ Qset trade-record-current: R2 [$ f( T+ k/ \' o! a
(replace-item 2 trade-record-current (item 3 trade-record-current))

; q* D1 L5 q2 V& e5 Mset trade-record-current
% ]1 P9 k( G) t8 E; T(replace-item 3 trade-record-current note)
/ V: c' }) m; o- t' s; C% E  A. `! k( ^

, C) Y  e* b: A% W  ^# u0 \! ~- yask customer [7 G; [+ Z* M" D
update-local-reputation
# Z* x6 K7 G! Y! p3 }) I4 `set trade-record-current6 H1 t5 J# r0 A) T: v% b6 d) R" T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 \: T* v$ ^1 [& W! A]
, u- P+ y- V/ `- {) ]' ?/ p* Z/ s  f

" E: D, R6 h, B% g  Bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) g; V5 Y: P, m

7 r; x$ M; x8 _% o/ {set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" D" {! X* T5 }2 @* K, S6 p2 ^
;;
将此次交易的记录加入到customertrade-record-all
' c: A: _" y* j* Q9 Yend/ X1 E3 I6 f0 p& n
& g8 o- |% h+ W4 F% k8 v8 l4 E4 z
to update-local-reputation6 U, t2 r" K) m. k6 e+ m
set [trade-record-one-len] of myself length [trade-record-one] of myself, k% h- M% _1 k" a0 f/ Q* a
" \; F  N5 l6 _8 x
! _6 M$ j5 c+ d) M' ]  j" {
;;if [trade-record-one-len] of myself > 3
7 E9 _. u+ x$ ?; y/ E
update-neighbor-total
6 x3 o+ j# u; L! A4 P: m1 z;;
更新邻居节点的数目,在此进行
0 c) \3 [# d' K9 j5 Z- Z* glet i 3
8 z( B6 t) d- F/ U( @9 ]) [( n  P' dlet sum-time 05 o7 |7 J" A/ [2 [& [! K+ A
while[i < [trade-record-one-len] of myself]* p3 S" [& y# d( T" J
[( u4 D% {" ]) N+ x/ O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( k7 V- @3 J: u& b0 w' |" r( [  f
set i4 G' G! R2 y, ?+ o6 Q% q$ R/ `
( i + 1)

9 s/ v4 T) Z6 P  X( _7 B4 X- |]5 N. {5 [  P7 O' M3 J4 n
let j 3* j7 l4 p2 g( _- `
let sum-money 0
# ~; Y  d5 S0 T6 i9 N/ wwhile[j < [trade-record-one-len] of myself]% z/ N8 j: a: H' g" j+ a
[5 l& W4 s3 ]/ a
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)7 r+ S- _) O3 d/ y* v7 d
set j
( C0 @0 r  S& b+ ~! r& \" {5 R! Z( j + 1)

! T1 P& s* y, ?]9 `0 P, m. ^7 H& C2 W
let k 3
4 K0 [/ I2 }; B' V: Hlet power 0
7 h/ _5 R# a  d5 F% y- ]let local 06 ?4 ^7 ~6 m/ ^2 v" f' p0 G/ Q% P
while [k <[trade-record-one-len] of myself]
5 @: l, P! Q: c7 k" V[
8 w9 w6 z5 g- n6 p7 x. W7 K" gset 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) / y$ o4 Y8 @; U- G- n* G3 K
set k (k + 1), t; o5 C) k* `7 D7 w
]0 b5 a" d; O: z+ g7 d( |
set [local-reputation] of myself (local)
1 I. f- B! ^  aend
( t- @6 h9 c. t- Z1 _6 f$ `" n) ?( i- ~
to update-neighbor-total3 h( O3 L6 R* D+ j. j

6 N, E9 c* e$ W, X5 `6 Xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 b  n) q8 Q* a5 @' x7 G2 l' p- Z1 c8 S, D

7 S0 a* U: p, j. d5 |end
; c( W3 t8 ^: h! V* A' ~* B# \' r8 r, o  f3 O0 c8 \( Z
to update-credibility-ijl 1 i' d3 g# z* ^, h' G

6 u* B! z) {4 n9 i: B;;
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。7 T) f& S  Z& t" }+ k1 M
let l 02 ]+ k, {1 m- v' X6 a) P
while[ l < people ]
- c. N! X2 l+ B0 `& a2 R$ A, q* c;;
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4 v6 Z. @  x* {3 m" J2 J
[
$ n; b; W! |1 ^! d7 E% Ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' U9 j/ R8 W# p: ]5 y, oif (trade-record-one-j-l-len > 3)+ [. P+ ^& \+ Y
[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) c% v" q7 `; @3 O7 `6 z) c! \1 X* d1 O
let i 35 E0 U' n. S8 t* j. ~
let sum-time 0" Q+ ?+ `3 z7 ^5 e6 Z  E% u5 m9 Z
while[i < trade-record-one-len]3 i( H# m$ T2 a6 f6 ^
[. d% k$ {# J2 h3 \0 O4 T8 w% I- Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  a/ Q) q7 n! |5 w" A5 [" O( ]set i
# ?+ ^) T/ k# A. |( i + 1)

. B9 d5 X+ ~  A' W]/ v$ i; T& i! m0 T/ W
let credibility-i-j-l 08 q5 t% b. X( ~6 E, p3 i: y7 g' H
;;i
评价(jjl的评价)
. L9 P. ~( C  ~. B2 Q6 ]let j 3. l- j7 [0 a# R9 y4 h8 _
let k 4
: H0 \- E, o  \) V% c$ b0 [while[j < trade-record-one-len]8 O5 Q8 J* X- e- }- l; w
[
) o: X% a. G! I) z1 v9 M* e2 b2 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
  [: ]; N: ^6 h. S7 sset 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)7 c4 N  }: r: `. Z6 `
set j
; Z. e0 R; X! Y: T! a8 I/ T' L( j + 1)

* U% y: U  V& D! H: a$ g! d9 X& t7 k]# q' P" N( R4 ^8 e  K
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 ))" G* y. r( t; t/ L: @! O

) Z' P2 e) i) L; _
8 r: o3 ~- j1 @  k$ H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 O5 C. s3 [, `" o. j1 [
;;
及时更新il的评价质量的评价
" m" P' Z1 |5 f+ o" vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" Z" E* K- {. y1 T& s/ b6 Bset l (l + 1)
) ^) \3 s# E% b7 Z5 J$ X7 g]* D% V! f: C/ d# T! @
end
; [! M: M/ K( Z. J4 p, T2 \1 l" O9 G; i. b# Y; Y9 b* W* Q/ c
to update-credibility-list
* C9 k, c9 ]8 R3 }0 Y8 Clet i 0
& w2 `4 K7 A1 wwhile[i < people]: x  ]( U$ m+ M% [
[& {9 v$ G/ p9 e  N0 {
let j 0
/ Q* u9 f8 _6 S4 f1 w' M& }let note 0
* W# d6 }3 b& W+ L, C; Wlet k 0( w/ i$ E( w# _" y6 g0 V
;;
计作出过评价的邻居节点的数目1 z3 _6 }* j, Y& ?% U$ A
while[j < people]
+ B. L, p+ d* j9 X4 E6 H[7 i0 N) o% k* X, ?
if (item j( [credibility] of turtle (i + 1)) != -1)
- l8 f' j/ u0 E6 z6 s;;
判断是否给本turtle的评价质量做出过评价的节点: C4 y6 G5 g/ k$ r  C3 W
[set note (note + item j ([credibility]of turtle (i + 1))). m0 C  L* o: O( y1 d' a
;;*(exp (-(people - 2)))/(people - 2))]
8 Q6 A. \2 i) ~+ w
set k (k + 1)
" k0 B/ v! F0 A# S5 d; i! ?]4 Z' f: t, E4 t  O3 R3 i
set j (j + 1); v# P, J; x+ |8 t
]
. u. k% G  E5 A" s5 m* L$ z; _set note (note *(exp (- (1 / k)))/ k)
) `$ j: J$ S# L* Lset credibility-list (replace-item i credibility-list note); i8 l0 J) W) v0 _0 |; N
set i (i + 1)
, s5 S& u! A; {9 k]
# h; }9 c9 P! x* I7 [; B+ @  pend
: C, V- T/ ]: y1 W3 V/ @1 \  E6 @, V3 k; K5 F/ ^* [+ y! i, i
to update-global-reputation-list
3 z6 x) f  a/ B* S6 y- v4 N1 llet j 0
; w( T" G% B) E1 Ywhile[j < people]9 }% ^, {9 h! s% G! E0 o
[
/ L9 H5 F# l+ ^- _( ]6 Blet new 02 u9 [- V* I: T" a% o4 @
;;
暂存新的一个全局声誉( B; S- v9 W8 W( M, N; B9 {8 |
let i 0
. L2 A/ T( I- U& k; }: P' flet sum-money 05 C' R; @& ?- m2 t& U% c3 C4 \, {
let credibility-money 0* n' d8 m( D& h0 R% m+ y9 Q- J' q
while [i < people]( C! L4 ], G# w' L8 I$ t
[: k. b/ A" [6 V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). i, N# h5 C' t% @0 u
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* N# a. a; |3 i2 \: Gset i (i + 1), m/ n0 o5 T# h  k
]: I4 T1 J* Y9 o; s/ s# C
let k 0) Q0 p# i5 W- q$ S' W2 j3 J% ]% n
let new1 0
, s3 O$ H/ a9 m0 {6 c4 X' ~+ z5 X, _while [k < people]9 s. U0 o7 s9 A) S0 a. N
[9 k: @6 X* A; y) b0 J
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)
) D( o3 c0 ]  C. Cset k (k + 1)- }6 s) A- h( W) p
]
( V% Z, I/ _0 ]# d. `' @; gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : M: Z" Z1 f1 v2 T9 g3 [
set global-reputation-list (replace-item j global-reputation-list new)
9 b+ d9 a! f( uset j (j + 1)
, i; D* ?: W( c2 V- t/ _2 q0 K9 ~+ Z]/ n1 A/ `  k; [4 ^9 m4 P2 ]
end
$ Z6 t! S1 {$ k3 {; T# V
6 n/ n' M, b2 E3 ]: N2 W
  [# W0 H0 D* @/ X. S1 X3 z1 H& o
2 W6 R& X) T! s( j( w- @  t( U2 Qto get-color1 N8 h9 {2 z8 O

0 l# U  B4 Q' ]0 R$ L, ?set color blue

2 l5 u/ U( a& A1 A, P7 Jend0 f$ \+ u% `7 t% Y- A1 P3 ?9 [

; M9 G6 y8 l& |, @. `to poll-class9 O' g" m0 W& `$ L! `" {3 l$ c
end4 ]$ n. S7 N( v( [4 s! h
/ _" g2 K1 n4 W) L
to setup-plot1
% g; A2 t/ ^3 E) s
( S5 w- u. a. z' l0 |, A. B7 @: yset-current-plot "Trends-of-Local-reputation"

- l4 J- f2 [. v" t1 ?1 ^
. z( O$ t2 |/ L5 [+ j1 R9 ], W; Dset-plot-x-range 0 xmax
! O  l2 ~, |' R9 }

% l# ]( Z* U+ O) l2 P6 ^7 y, _$ E2 c% Z8 Pset-plot-y-range 0.0 ymax
# {! q/ T* D. U, l4 S8 w* X
end
, i/ ]; F, @' u+ G/ ]$ a: p* [
; [" C4 e" U, ?7 C: yto setup-plot2
' {1 `$ V# V: ?7 h* g- i; z
" L. V! Z, S7 O/ w, q. q6 aset-current-plot "Trends-of-global-reputation"

& |. u* a9 E" U* ^! }8 G# P% B- ]+ m9 [
set-plot-x-range 0 xmax

5 k7 U" E0 r+ j3 w
! t* Y) y, j# G' E3 a5 Iset-plot-y-range 0.0 ymax

4 Q3 h- t8 o" W3 a; Z/ S1 L" uend3 o! |2 E* ]( n8 V9 E% w
: e) S8 D/ P% \" t5 Z! l& y
to setup-plot3
: H1 g/ R3 g4 j0 U% H6 g8 {
. G4 h3 k: a8 ~; aset-current-plot "Trends-of-credibility"

; }, ^* \! e# F9 d4 w
2 }! t4 R/ c% f4 Q( Q6 l9 Jset-plot-x-range 0 xmax

7 x0 L& j7 ~% N
* ]) X: r# @: V& J5 }4 L) qset-plot-y-range 0.0 ymax

( ]- A7 b8 K6 t7 a- Y) Q. Uend
. c3 }: d! p. A* c: x; r, \
/ x3 E4 D$ y0 s8 sto do-plots
) ^/ U) j8 }+ a  i5 e5 x! \set-current-plot "Trends-of-Local-reputation"
+ L2 \. E: M/ O/ eset-current-plot-pen "Honest service"
- G5 W2 C) }9 R# S4 yend1 {" y6 R0 |1 K+ x! ?

7 J! t; k( Q" E) q: A" c[ 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.
. ]- X9 L4 n& w2 h4 N. X
' D) k+ X5 Q+ P3 Y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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