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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:
% e" Q. ]& L* `) H/ Y, o2 Q9 oto do-business 2 s1 a" J$ b) B3 @6 U
rt random 360+ B4 W( A# t- Q3 k
fd 1
6 S, a1 C! f0 B( N ifelse(other turtles-here != nobody)[
! z( ^) \1 @9 [4 r& B; y1 @   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# S7 F, E' @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 h) p, g. h1 q# ?( n& z# c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 {! b4 h: z  |, |2 F, E
   set [trade-record-one-len] of self length [trade-record-one] of self
: F7 b4 ?8 j1 @6 p" K   set trade-record-current( list (timer) (random money-upper-limit))
7 S6 q7 o1 O# f% i$ P" g8 |! n) m) F5 j' U/ l& q
问题的提示如下:& H$ q; O3 B3 _* L$ t# C

7 }  }$ X& u6 o4 z4 Kerror while turtle 50 running OF in procedure DO-BUSINESS
4 k+ |- z& I' o  called by procedure GO
9 j6 D" P$ u1 {2 D, W1 a! v# G2 XOF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 v5 K/ I- q4 e; \
(halted running of go)
& I% v( G* W4 |9 E& k# Z% O0 L+ v; \4 `9 e( L! _3 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~~# E! }" K' U- I" O) U2 T
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0 I# g7 r/ @, N/ S6 |3 T" s
globals[
. ~$ P; y' ^, {xmax
6 r5 c: G2 R$ G# xymax
+ b4 r) ?) P: p2 g/ Jglobal-reputation-list
, ~% B' b% X/ p  i: f; |# n2 ]/ \" c: B9 V9 v8 _
;;
每一个turtle的全局声誉都存在此LIST7 S- S3 P  y1 }+ h9 R
credibility-list
# ~" m1 j: v% Q3 u( s3 D( |8 Q;;
每一个turtle的评价可信度
: L9 A$ K. M" p1 _0 I3 F9 h) }6 d* Shonest-service
- a' F! D& h9 g' c/ _" u! uunhonest-service
  P' h8 ?! m2 ~- [oscillation) @. X  a' O+ a8 D, Y+ G) b
rand-dynamic
8 ~$ U1 c: u& a* [3 {]
. p* d; R1 t, M) P, m$ x
# R+ L- U$ z! u. Gturtles-own[7 I6 T- s9 o& z
trade-record-all  T5 A" z+ l& Q0 q- X. _
;;a list of lists,
trade-record-one组成9 `( l# G  r8 q! g. e1 y
trade-record-one* {& K/ Z3 f- t: M" Z  c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& `" ?% z# [: g3 j0 z" F0 y
% |$ K$ U  H, z1 v; ]5 z
;;[
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]]. L7 [" l0 K+ S6 ?5 S( |, ~7 `
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]6 [. q. l- J% _% z  G  w4 S
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
$ {7 F2 L+ j" f9 n! C6 k. [4 dneighbor-total9 Y2 T& T, F8 f
;;
记录该turtle的邻居节点的数目
; g* c' a. f9 ?4 Xtrade-time
/ {- f9 v0 T) ?, G; |( C# ?' P& n;;
当前发生交易的turtle的交易时间
4 u# j4 G0 M0 ~+ p$ oappraise-give" G4 u3 m7 y# V; R% x& c
;;
当前发生交易时给出的评价% r1 {, m% w# o; \; a$ O
appraise-receive1 e1 J# l& U# [$ B( u2 C; B
;;
当前发生交易时收到的评价
" o- O5 V8 A& h1 E( [  Bappraise-time
! ?: b3 E; I, d& ~8 [, {( U;;
当前发生交易时的评价时间
# v: ]0 V- L) I; S. O0 Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 \# Y! B0 @# b
trade-times-total0 F6 L$ J0 `% d, n
;;
与当前turtle的交易总次数
) N& j3 l/ |% H( itrade-money-total
9 ]. ~0 V" H- X7 L;;
与当前turtle的交易总金额
* Z2 e4 k/ T7 R, K0 T) E& }( ylocal-reputation
& s: a0 M& ?% k3 U! qglobal-reputation
  _$ ^5 x  E9 w# [: v. z( _, `credibility
- {: J9 {6 A8 u! U4 i9 D+ ];;
评价可信度,每次交易后都需要更新
- t9 x, v) r. ^credibility-all
' _$ w# A) l* s. q3 a/ l;;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
2 w' `( A1 ?" \
$ ^" o1 q; p8 _4 g;;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0.55 U# v1 P6 L+ j# W, N; ^! Z
credibility-one
/ k! E8 x0 L; x  C& r* G. z;;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/ J) r0 j! Y( g
global-proportion
9 p; K! ^! e; w. g3 x6 a* e2 M& ccustomer; A) A, j6 w' N: {: f
customer-no
7 `" q7 e$ x" i' ^' `trust-ok
/ v9 Q. o9 s, R, _, A) Ttrade-record-one-len;;trade-record-one的长度: k6 `! S( n4 K& w: r
]
2 X( t$ w6 M+ m# w7 r' U1 ^8 B/ _$ u$ J% H
;;setup procedure$ Q4 i! Z! T( C; L

6 ?5 Q+ `: L9 z7 q! Mto setup  c0 }. W, u" b% m! D( n4 U
: S; A2 K7 y3 b8 B
ca
! ?8 B9 Y0 X" U1 B4 y6 E
9 q& D/ `% n0 O6 }
initialize-settings
7 c) x5 u; u1 |* z; T8 Z- E

: E& a: ]1 Y# ~$ u. Z0 qcrt people [setup-turtles]
1 N; ^* N1 E2 H

! W) K/ q+ I- dreset-timer
$ F$ @* _* \6 c
' i% A6 a4 E6 k" ^
poll-class
1 T. C1 D+ @5 W. x0 A; j# J3 J

6 @. J' ?0 W7 s0 d" X  Y. csetup-plots
( p, l5 M& q& A- a
7 z; B+ U8 z$ m( l& _
do-plots
( V1 R( V+ i, i* l6 Q( m( E
end
  Z& F% n: w7 P6 Y4 g  x4 |9 V  b9 N. Z% g8 i9 U, V  V
to initialize-settings
8 \# ?! \) x9 J- H* M
0 @& D- p$ C: d# gset global-reputation-list []

5 i! j: U7 j* a3 H2 N8 F/ q% A7 i. [# S. Q* Y7 p- Z
set credibility-list n-values people [0.5]

* W8 {7 s2 q/ J, \3 V
/ z: i0 p7 a+ e; v( c2 Gset honest-service 0
7 ?& o. v# `7 ~9 M, M. p8 n' I; `

8 R% n' S" i1 h- D* I- {2 U5 Gset unhonest-service 0

& L2 v9 P% G2 |* h6 ]: Z8 {+ l! g$ w
set oscillation 0

+ r: g; {7 `) u, u; T. p( I  t# X0 ^( G
set rand-dynamic 0

2 J0 R8 ]3 e: f  W2 C# k/ K  H/ Rend
* q/ \+ |' a: E& h' v
: c, ]3 P! o6 \% Yto setup-turtles
' i4 e; A( K+ H6 W7 ]) ^' E1 tset shape "person"1 z! u8 v" r0 g1 N0 R1 B( e
setxy random-xcor random-ycor8 H# r3 P8 {$ ?. J7 M. [0 W
set trade-record-one []* W2 [$ z0 c$ Y% S0 m: H8 u; V

5 V7 U2 I! Z/ nset trade-record-all n-values people [(list (? + 1) 0 0)] - x9 I/ ~. h5 G/ u; _  |! [% z
: M/ x5 ]: A! F' ~
set trade-record-current []2 w- y% {: @- D
set credibility-receive []# Y# Z  t7 d, k  E' [
set local-reputation 0.50 k" }% g( l  M5 {7 w9 q
set neighbor-total 0
9 W* V  Y- }  z& w) S6 p9 zset trade-times-total 0
% F( j6 ]9 v" ]! ?$ S  E! `. Cset trade-money-total 0) h* a7 c% a8 f/ b
set customer nobody
. n- }' E7 ^$ _8 ^8 O* A% Wset credibility-all n-values people [creat-credibility]9 s" j/ `  a: U4 y
set credibility n-values people [-1]
, ^- {/ y! `: d. C4 {get-color2 r+ r) ^: E1 z: v7 K1 s6 d
1 p6 f3 C, ?9 l$ U
end7 u# t7 u0 d" }" o7 G9 }$ ?' u9 c8 J
: q# x* E. a7 T  W6 u; E% z
to-report creat-credibility6 l: f( g: {5 k; ^2 J% N
report n-values people [0.5]
0 C. n& Z/ r9 yend6 b8 k) N/ [4 S9 s3 v. M
$ [" m- U4 O5 g: G" L2 D+ S
to setup-plots# `9 O8 z# K+ i0 n4 n, q

9 Z) `. k( U0 U  i( ^' Y) iset xmax 30
# v* C2 d+ I1 A1 o
/ ~5 u  M7 a* \5 M2 X
set ymax 1.0
1 O4 x5 |- j+ A4 |
& y. ~! q3 P' R
clear-all-plots

+ I2 Y: Z9 [& S, p4 F& L* ?0 h
6 z: W3 x8 X: m4 b3 W' Dsetup-plot1

# Y' O$ Y1 U6 a6 i+ C& }" G  ^# I4 ^* }% f
setup-plot2
" \( J" r& P5 U+ U7 p7 }$ J, u1 z
- f& b' o5 [1 Q0 r
setup-plot3
1 M1 w) u- L" S2 q( R/ D% R
end6 w% ~% z% g8 k- ^( B2 ]1 T

' `$ z/ [) T9 `- o* `;;run time procedures+ b& N9 w: W' \' M0 F: j0 f& Z

, W5 R  N1 [0 ]to go1 S& k8 `- S$ s
( K2 R. w* `1 ?
ask turtles [do-business]

9 O, p7 ]6 m' Q! M* v0 y/ kend
0 `7 G4 R; f0 y" F
/ j1 t  Q  ~" j$ S6 o; dto do-business : p/ B* G" a* I# K# M. M* ?

# f. c+ j- h. ~# n6 X* P  j5 u. ~# G/ \+ F; S5 [7 c( Y" s3 ?
rt random 360
) e; `2 A# I. E) K2 Z2 v0 w

( r* b, a' ~# s. l6 Yfd 1

; L# z7 u* R9 o$ I8 Y
3 g$ C, [% y0 K% v/ Lifelse(other turtles-here != nobody)[
: h; L2 G( |5 C& o/ A* Y

$ d2 N& K. \9 N' `" {. c1 Wset customer one-of other turtles-here

( V8 W; t& Y* n" }! w6 h, D) T$ p" T( c2 _
;; set [customer] of customer myself

) ~6 W( _- {* ]. p% t
) [& a  M0 V+ T- ^- V' u8 yset [trade-record-one] of self item (([who] of customer) - 1): R4 K1 H0 i& G* t0 z6 C& H
[trade-record-all]of self+ J; W# k* I/ Q% L+ z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* m6 u5 \' ?) r" v5 k, s
2 |9 a% S1 X7 x+ n4 r( B& [7 L
set [trade-record-one] of customer item (([who] of self) - 1)5 T1 C0 v. R) a, e
[trade-record-all]of customer
' G6 `2 p5 P7 m4 j* l

' s, C* W, _! lset [trade-record-one-len] of self length [trade-record-one] of self

! Y7 p) b( V  l9 [( I. y
+ T+ s  [  j! Oset trade-record-current( list (timer) (random money-upper-limit))
* |" D, W% c. ]- e3 t

6 f* h% Z! F; T# {% jask self [do-trust]2 {, v: T' T0 x5 ~/ F' S; w
;;
先求ij的信任度& n5 J$ y# B( Q3 H3 p/ [, n
4 P4 E$ A! D  |% T' |3 Y* p9 J
if ([trust-ok] of self)8 m) p& L9 Y; d* v. A
;;
根据ij的信任度来决定是否与j进行交易[0 H. R; [3 Q) S* Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 F+ `1 z8 ^* g1 u
7 N. R, g' N9 }, u8 w
[
" r; W" _! s# \+ p
' k$ Q7 s& L( x% g8 p1 c
do-trade

& B7 X! z  a$ F0 R; ^3 _- l$ F* `+ O  K8 T
update-credibility-ijl
7 `2 ?7 Q8 f8 N) T0 ^: Q" \
. ]7 U2 Y* O. a
update-credibility-list
5 g$ @* u0 v" ]! \

/ y1 R, L  u, D. i( o& ~' c
$ Z, |7 }6 ~$ F4 }* P7 a1 ~+ Rupdate-global-reputation-list
1 k, K$ `9 w( F) L& w! ~

4 C. y( P  T8 G+ z& _' f" C8 Fpoll-class
# {% k3 _5 N6 k5 U  r

( S$ a3 W. v' ~* s, q2 m# t+ ]- Xget-color

0 ^! ]) Z" j5 L) f% L7 r& f/ @! r, x) v0 U; ^6 [2 c
]]
+ `8 m( t+ y4 A$ j! c# D+ {& u
/ _/ y/ {: B* X1 g1 X;;
如果所得的信任度满足条件,则进行交易1 v: U4 A* i6 C! f: V

7 ?9 q3 C1 o- s# A[
/ v+ e  Y& s5 ~6 ~

7 B% g; n  R# i5 \rt random 360
/ P& F' ?. W# c1 `* s' j
& w( P5 q% _  i) n* @
fd 1

1 f% _4 y  E& q* q2 w+ f0 S% d" L9 ^* U) B
]

8 R5 }9 G& g% s8 I& C% y' f, w( g1 n, ^  b
end

. P9 @) y7 {1 `5 c/ x1 q+ N
3 l/ W8 a5 f2 A! }" M: ], mto do-trust , h/ E2 R. k& P% k; ^8 {
set trust-ok False
, f, {' \) d4 \
% N% @6 r3 i- ]8 o# [
+ \. I8 E# D! ~6 n& m1 D
let max-trade-times 0
* N+ R% u3 |' `* mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ f  N) a  r& X7 x* V/ h: B
let max-trade-money 0
# z$ n8 m6 q2 Z  Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 b, e3 d  C& E: m- Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), u# z$ m- ]1 `7 K
2 u0 X: u. G  |# w7 x

3 M: |  w1 P) G5 }/ b- u- t: I7 yget-global-proportion  m$ w$ Q5 u5 N/ ]; Z- Q! b; f
let trust-value( K$ k, {* Q+ o  W& F
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)

7 J5 Q8 o& Q  p* p+ ^+ p2 Lif(trust-value > trade-trust-value)
, h% C( a* ?% K+ _+ G[set trust-ok true]" ~2 R1 S- |, I* S
end
5 l2 K) M' X5 M/ T( l$ B9 ^- e! B# H
to get-global-proportion% i' o3 l- S9 l% u2 L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( o9 N# l0 s. y/ }/ b( U; }2 Z6 O2 O[set global-proportion 0]4 ?5 I4 i& G8 Y7 w2 Q7 R5 c
[let i 0+ S. e1 g+ J/ u
let sum-money 0
3 H' k' \+ [! M" a* A7 P2 u% bwhile[ i < people]# n. ]1 U! w& v, a
[
; P5 s2 p2 x5 uif( length (item i
1 L) l0 c2 U3 H4 Q6 S[trade-record-all] of customer) > 3 )
6 r4 I5 w- Q8 E- v* o# z
[
& j' G3 X' ^& \' f) o0 g6 mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) t- v% q( i7 p* m# Q
]
. k6 R6 r4 c) v# E; v]9 I/ L) D7 _) l  Q
let j 0. e0 t. V" ]" u! j5 i; l- F
let note 0* d$ G* a: y" }, h% s
while[ j < people]: m9 Q- M( p# ?. V
[
( a) ]' }: ]9 w  n- S: r: jif( length (item i/ Y2 V: ^: k9 C% e: w
[trade-record-all] of customer) > 3 )
* B* i; x: @- |$ k, c
[
! A0 }8 C  q( f3 G' C) I8 w6 X( l4 Sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) z! S. u2 f! m5 @+ U" V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 ~, r) `' ]( b$ E% J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 W7 I8 C" c# I7 x7 w7 J% Q+ V
]8 G2 v0 t# Z6 E! w9 l! C$ u9 b; Z
]7 x/ p1 y3 T- v9 C2 [8 \1 s+ a! m
set global-proportion note
$ l4 e& x, c0 X4 ?9 L' c/ o]
3 @; w" y3 B8 m7 ]" mend8 B& T3 L+ w  X- N

) `& u7 y, I& p! i7 Sto do-trade
5 Q3 k  v# W, u. o3 Y' F8 D;;
这个过程实际上是给双方作出评价的过程+ o! T: l3 }  [3 `* W1 S( l, F- p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ i! k4 y5 n. Z+ B6 T( g3 P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- S; L! V+ [7 I" H  B& }( N& `set trade-record-current lput(timer) trade-record-current/ o9 I* k1 [! j* m
;;
评价时间
+ U; g' a0 \" d; yask myself [$ e9 V6 z# I& q2 k& G. I- U
update-local-reputation# y) ]  G+ f" a; Z! B# s
set trade-record-current lput([local-reputation] of myself) trade-record-current
6 ?' Q0 m% ~, v+ Q. [$ R, J]
8 H) v" Z" g! q1 e5 ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) C. ~/ J) X/ J! F' N;;
将此次交易的记录加入到trade-record-one
9 T6 n% O$ W, E" h6 Q% m2 Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 P; f) B: f5 B; ~let note (item 2 trade-record-current )
' Y( R# q3 J- e! q+ @4 y8 {" Zset trade-record-current
& l- O1 o; v* w$ A0 u(replace-item 2 trade-record-current (item 3 trade-record-current))

6 A9 y9 R. c& ^0 ~: R- T3 jset trade-record-current
7 {9 ?  n. A. M(replace-item 3 trade-record-current note)! v( j* u' S; h' g5 H# y
7 \# y/ j, P6 ]# s  l- j3 X
! s7 R9 H2 j, u$ C7 i
ask customer [9 u) u0 d5 v) X- D- K$ o
update-local-reputation
- P3 k+ X! n6 O; O$ v5 g4 Dset trade-record-current
. o' Q# d- r% K' U* b: u0 [; |, M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, g- z4 ]6 u, b
]
) I4 R! x7 k/ r6 U  `* V9 p4 o% |

+ l) ]( Y1 L  m( |) |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 Z$ w6 }' ?2 V$ `4 i
6 X+ e* M- D  D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ b' e% X9 }' `' C: U: G5 s: S;;
将此次交易的记录加入到customertrade-record-all4 B, `$ j% G- f/ E) D- x
end
/ [- g+ S& I7 Z0 q8 n+ F
7 A* l: y) r! ^! G$ tto update-local-reputation- b3 H0 l3 E% g4 b4 ~' ^
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ j$ N# f/ j/ t' r  C" F- B! O: y1 h, H0 y2 D& e  U9 B
& q$ W3 B' K7 |% s& Y+ j% J$ J
;;if [trade-record-one-len] of myself > 3
7 c( \: y  `6 O$ J9 {7 p' v) f
update-neighbor-total
: a+ {6 ^4 F1 j: [7 o;;
更新邻居节点的数目,在此进行
" j$ W0 ^. }- Zlet i 3
) i( v" D3 A/ M, C1 x; i3 M: flet sum-time 0/ w7 H( V; e2 t  y+ k" u
while[i < [trade-record-one-len] of myself]* |7 A2 V; f+ u$ w
[
; N# o: ?: E5 Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 t. y  Z6 r5 r& i& d# o4 Wset i5 o% Q3 K( T2 D  y7 O
( i + 1)
/ {4 }( ~" A9 N
]& a3 q9 h* d6 x1 A) y8 L9 K
let j 3  z' J1 I- K! u1 F
let sum-money 0
& Y/ l8 e% |1 b' ]while[j < [trade-record-one-len] of myself]1 J- l; U( u7 y
[
" @8 P8 x3 @5 Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
: ^/ b8 k1 V) O, M3 tset j: i7 A5 b2 U) R# B
( j + 1)

6 \. X, }& k2 k- H]
5 C- a- `1 ^+ \9 u8 w# n+ @let k 3
3 d. y* j8 K; W/ R) f% ], b6 Zlet power 0+ E4 F2 U) B2 K! s
let local 0
. E, _! u2 c5 D, \while [k <[trade-record-one-len] of myself]* M% x7 L. V+ G+ o  O% `
[1 \8 ^8 v. K1 _  i$ P
set 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)
& Q- f7 V3 R/ N6 R8 kset k (k + 1)4 }+ i7 d6 w+ h( t6 K9 U' ~: t" D
]
, \+ k6 f' {% ^. k, q3 lset [local-reputation] of myself (local)
  i  w6 ^. D, j+ Z; wend5 q, {3 U2 X" t5 H, f9 N* W& Z: ^

4 n( ~0 P( E) }% i, b7 C2 o1 `to update-neighbor-total; |, Z- B- D+ \3 Z9 ^0 r

- H4 g8 S* ^' Xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 q! _6 M- O* Y' F( }% h6 }  l

8 |4 B$ d% R! }" h# r
3 J' `/ j! q2 `0 q
end# v9 a* R3 \$ {; h
, T1 S; T8 n; M+ G5 i- q
to update-credibility-ijl ) W. v$ Z) s/ G) K% j6 {
  u4 T3 ^0 e; d( z; Q! z1 k
;;
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。) d: y) E$ _* t
let l 0
7 _; @' @$ M% I4 t' kwhile[ l < people ]0 V0 ?# D, ~) l; a# W
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价. }! }. t; d' c! E
[, p+ v8 \7 J* T/ ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 q4 j# W  i! M: a* ?7 ?- \if (trade-record-one-j-l-len > 3)
5 D+ R$ ]! l. ]* D7 y  |4 H[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
$ d; p7 U. Y2 b6 E; p- |let i 3
: I" Y) @7 O1 `! L. n5 Dlet sum-time 0
$ v; y4 W: ~; Z! i. Zwhile[i < trade-record-one-len]
: j/ U- H- o* e' E% h5 Y- o[+ U  {% p; R* L: p$ M- t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 k2 ~4 X. o8 y% p
set i- L9 b. N$ w# k1 U  d
( i + 1)

" U3 \" y) u8 x0 S! X]
1 G3 t& f# K8 z7 Clet credibility-i-j-l 0' E5 X* q5 [9 P2 |% Y$ s
;;i
评价(jjl的评价), `4 r3 e* x/ ^% Z6 H# Y
let j 3( W  V3 _# u* J0 W0 ~  }
let k 47 U& V4 d( l, x' |, X- i
while[j < trade-record-one-len]
, |; i5 ~0 O0 I6 r4 d, ^$ [1 ][$ A6 k; L4 ~6 U- y
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
9 l' C5 t) k& y  J# y( R4 c" uset 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)2 m' @( O* ~8 ]3 ?7 n& D0 \
set j
2 S) F: `  Y4 q% q9 u( j + 1)

9 N1 L  Y3 Y! J3 Y1 B]. [* A6 ?& J1 b. z$ p0 Q) b
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 ))
- U* B0 Q! m' U7 O# f/ g9 Z; T( q
/ g5 T' h2 a( V+ L6 k

( K9 a$ n/ ?6 y* a5 }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ U) h/ `! u6 m3 r( ~; C;;
及时更新il的评价质量的评价
% a6 R! S- H' n& Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 _& Z6 o' Q* D6 X0 V2 L% E
set l (l + 1)2 [  c. U; w( x4 B/ F% d
]
: ?* [4 G$ J* \( o& jend
# j1 O- {; V6 `7 g$ Q* d9 O7 D0 Z8 P( W' c3 F/ V
to update-credibility-list- d* k$ g& I( n2 r! f
let i 0) J2 y+ }& q% s0 k- i3 L, `
while[i < people]- w: u2 `, }: a& C% U1 L
[
; S# ]! q7 R) L. {2 e+ T) @# Jlet j 0
! J. l3 S. d6 Z, O, Q" Ulet note 0
" I8 j! N8 s) A* H9 T' |6 X& s- Elet k 0
% o  u( @5 \5 t; f7 A* t1 L;;
计作出过评价的邻居节点的数目  j% {2 I9 K1 {' n, Y
while[j < people]
# F. n& P$ T) {1 C: E[/ s; d; ~2 A8 W% i7 P  `& B" Z
if (item j( [credibility] of turtle (i + 1)) != -1)
+ `, T3 @, h  r: j;;
判断是否给本turtle的评价质量做出过评价的节点
, l& X, |" W- z: s[set note (note + item j ([credibility]of turtle (i + 1)))1 Q. N8 C' r4 M2 @, w3 W+ N, n
;;*(exp (-(people - 2)))/(people - 2))]
8 q7 w0 j, C1 b- L
set k (k + 1)
: Q$ t# M( f% `5 P]
* I- S8 e5 o# p) j' z8 ~, Zset j (j + 1)
4 j$ x3 v& |8 \]* ^' u+ s3 p* N! S
set note (note *(exp (- (1 / k)))/ k)8 P# N4 s! _3 G3 M) u
set credibility-list (replace-item i credibility-list note)$ b* m: Y3 C" d, U
set i (i + 1)/ u# r0 L' m, Y3 w# ]
]1 h+ Y% O; q* {. N2 l
end
7 H; `9 U) w7 ~# G; e8 B+ q0 I) ~  p4 z( a) Q
to update-global-reputation-list$ i, f0 M5 e& d2 M0 R( }
let j 09 @1 Z8 K! t; R& S5 X
while[j < people]5 g+ X2 [3 C4 [: D" A1 I
[- E. K3 B  A0 Y  ]8 Q
let new 0
7 U) m5 P& q, [  t;;
暂存新的一个全局声誉
& D7 U7 k3 ]3 X- @" I# O4 q& `8 l  jlet i 0
: I% I& m: s. e% l7 Y) p5 vlet sum-money 0
8 y7 Q2 J/ ^1 C: H& flet credibility-money 0
7 s& }7 ?. i5 d2 [5 g5 \while [i < people]# Z( v  f3 Y8 h
[
; t0 g$ _1 u. G; G: b. J9 a, sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); w% i& r% X6 d+ N& Y$ }0 @0 P  E
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% b7 g* N# I6 s2 l- ?# L
set i (i + 1)
( N! [* n8 H3 y' p, R0 @( f]
; D. ~  V9 b2 J7 Clet k 0
8 q' ]! ?1 [7 H( d7 vlet new1 0
5 b3 `" p3 }8 H* V4 k) q3 {) l/ P. Iwhile [k < people]) l/ P6 H( w. q) v3 z! t
[  P- a" v6 @; f- E; f6 B6 L
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)- h# U4 v. l* E" o  J8 ^
set k (k + 1)( m1 W8 `% d" V, ~5 y
]
. t( h# m: E- }% A2 s) }set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 P* A  I' ?8 R+ ~8 v7 wset global-reputation-list (replace-item j global-reputation-list new)
% r3 I5 w% ?% r" `, Iset j (j + 1)
  N0 u: w: S" z1 n9 n6 F]+ R$ v0 q* Z3 M9 V
end
7 z9 {9 ^" j4 Q8 Z
; \/ Z) L% A/ _# [' c8 x( E" ~- V$ d

) u, o- v9 N  k* T9 }to get-color- Z7 i( j0 g2 V+ T4 {
% h* q+ `% v% n/ y9 }1 g
set color blue
; _! k9 [8 f1 W- i% ]2 |: i# \4 K. b
end/ s4 q, \" U. q: u( C
% t9 d1 P2 }+ u* t. E9 W& {; [
to poll-class
& q, m9 J+ d; o" e, Qend
% C4 V# z+ r  Q; m1 D( G. Z
6 F( g5 O# _4 r$ Q4 zto setup-plot1
6 k0 K( `) Y' U% h8 K1 J& X% [2 R- A5 p
set-current-plot "Trends-of-Local-reputation"
5 x+ F' S4 c* k/ D% c# J! y4 r2 C
: K0 H8 H1 b; I+ Y0 }! i) b
set-plot-x-range 0 xmax
2 f, I6 U5 u8 f' J

4 G2 j9 K/ |+ J. s% C% M% uset-plot-y-range 0.0 ymax
, C) r6 \" F1 G4 v
end' S% L! f2 V+ u( a2 u+ `% |
( p9 V% m5 N$ z
to setup-plot2
- \  Q* @% d  _
& j/ r, O# {, D7 I% L$ |7 U! pset-current-plot "Trends-of-global-reputation"

& J6 K* c9 w  z9 O, z2 R; u/ M5 Q, l5 i4 ~( I  j
set-plot-x-range 0 xmax
* l  M6 M2 c8 P8 X+ Z/ `
3 I% z; N1 H8 |  M0 ?, t. B% d# e- a
set-plot-y-range 0.0 ymax
* n( b7 r( a- ?* }% C) O( g
end4 c* W) k3 m+ z$ E, `; s- Z+ M: O( W

7 l' s1 \! J3 e8 U. Uto setup-plot3
/ k& ]1 s( Y0 y9 t' {  Y4 Q- D- B5 G- z
set-current-plot "Trends-of-credibility"

! V) _8 s+ M2 a8 r6 V9 p( I9 r: ]5 ~2 F3 R( c. ]
set-plot-x-range 0 xmax

# Q% q3 K/ b, |$ q0 g) _# q) G" v& J! y) g
set-plot-y-range 0.0 ymax
2 @- I9 p2 u& T- q" u# Z
end3 a6 e$ l( o; ?" G/ X; I
: _$ \% w7 E6 H9 ^! f5 v8 g. S
to do-plots
& P5 r& e8 |9 U- n( n: U; {set-current-plot "Trends-of-Local-reputation"
/ d- {; [9 w+ \5 p. _set-current-plot-pen "Honest service"& N6 |, A7 K) q3 Q
end( T7 E4 k2 x& A" A, L% x- z7 x
! n7 u; q8 A! x/ i! G
[ 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.6 ?/ n- }: c2 `) B

3 I3 f3 L" _3 u9 Q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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