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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:4 s& S7 `" F$ N+ R0 Z3 z
to do-business 8 F' K9 I- {9 t. ?- P
rt random 360
, E0 @4 Z, ^3 ]  Q fd 1, h6 ]+ w: o  Z+ u0 |& K
ifelse(other turtles-here != nobody)[
5 Q2 C' t' o  E4 W) k( K   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./ Y7 u2 H$ N0 Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 [) P+ f0 e0 o* r  e$ u+ N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 H9 E- N* x2 f% t7 U9 N   set [trade-record-one-len] of self length [trade-record-one] of self5 f# u" I0 Q0 ?
   set trade-record-current( list (timer) (random money-upper-limit))
  N& ?, @0 L& `! O7 p/ S6 Y. _4 ?
问题的提示如下:8 G" z  Z. @2 f; K
% O& E0 |1 a/ _
error while turtle 50 running OF in procedure DO-BUSINESS8 C$ |5 r- F0 c* W' I1 x- f
  called by procedure GO
5 h7 D  L: A) Y+ ~OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 g# y+ {9 i# ^& q6 |
(halted running of go)  L- ?, W8 O/ R1 J, g7 F. m' _' L

! T2 u3 X4 N; a9 F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~~/ m) Q$ S' \' _/ X
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- ?. Q! n5 ^2 W$ |8 s
globals[
) a4 z- v1 X+ f# [7 Vxmax2 b1 |9 j& v! u- M
ymax/ d* {1 c2 ^& o; N  M; i1 ]- K/ `
global-reputation-list
0 n4 U1 o! k0 p" Z
5 X  ^5 W& N+ Z3 z7 ?;;
每一个turtle的全局声誉都存在此LIST, @$ u2 n0 R) u# |& I6 z" ^/ W
credibility-list
! M$ F9 E2 Z1 z( W" R/ D;;
每一个turtle的评价可信度' s6 \/ Z. a- L( d
honest-service
* L% f, ]) a' h9 @& i! punhonest-service
* H  d& U& r' K" V8 f, h! Ioscillation
3 S' F' X0 t" Y) V/ ~rand-dynamic
% s; g6 P5 z! i! l1 q1 @( F* ]4 F]
) d& t$ C: K2 g$ k4 Q+ J1 @
* W- L2 w# x" x+ E1 [turtles-own[9 g  O7 X: b  D/ v' n! ?+ N' \
trade-record-all# F% Z6 Q) g  G8 z/ H
;;a list of lists,
trade-record-one组成
+ z3 {. U* h: m. otrade-record-one
) z8 P) E. K- C1 k' `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 {' X, e7 t- L$ y' r) A8 s8 X9 B% ?% W4 [& W) M& a, B$ p
;;[
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]]4 A0 u$ S- X8 Q0 t1 U4 {3 ^
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]
' O; V" O' N2 a6 U$ P0 dcredibility-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( V( a$ ?' T- L/ R3 _
neighbor-total
+ ?0 y; `: Q5 B/ c( W' T' e;;
记录该turtle的邻居节点的数目
1 I9 B* R- Q& _# {; t- t$ etrade-time
- {/ f+ C9 ?# a  D; T1 e  N$ d+ h5 F* @;;
当前发生交易的turtle的交易时间
* r3 O2 u* F! f8 d0 happraise-give
7 W0 T+ g5 ~' X/ k1 B7 \0 K" e;;
当前发生交易时给出的评价
! o$ a; s* ^$ F4 o+ Dappraise-receive* Z& u0 P) {  p, c* c
;;
当前发生交易时收到的评价  i. @0 Y8 Q. ]# y9 `8 }: _
appraise-time
# Q( a1 j2 k1 b0 Y8 S;;
当前发生交易时的评价时间
. }* K1 Q, e3 Y6 V9 l- Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 J1 b) s7 U4 J! d) S+ ?
trade-times-total
# v3 C; _8 a5 I. o, l' P7 p! \;;
与当前turtle的交易总次数
9 C+ Q0 a8 Y: D6 ^+ P" Itrade-money-total
9 ], p" m3 Y' D' Z% J5 C;;
与当前turtle的交易总金额& l2 T8 q' M* U
local-reputation
% q" w  u! s' \  E3 T- mglobal-reputation
" }4 z4 c% L! M6 Z" [9 {credibility
; Y2 A& F! {# G$ E. _;;
评价可信度,每次交易后都需要更新' ~$ l/ {. g/ ^7 T
credibility-all
+ C+ G% u) q' X;;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
9 a0 r3 `; X6 R0 I% o6 t" F- \% d5 o* k/ C* f, M* L2 g9 x
;;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0.53 E" m% A. }# |+ i; c  t
credibility-one5 u( h/ G8 ~+ |7 Y0 z, q1 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
0 O6 t# T& [0 |global-proportion
% p- O+ S$ c% k$ S( Bcustomer
" E8 Y7 w: u% X/ P* d' Z9 acustomer-no
' R/ Q, Z! I' l! r5 N' M) M, b" N* utrust-ok
  ]! c- M; V1 P' s& S6 |( l8 _trade-record-one-len;;trade-record-one的长度) [5 j& C: [0 R0 A6 |* e5 b, Q
]/ y& U- i8 M6 p. ?

7 I$ I3 s: _2 n: C7 ~;;setup procedure. W+ S3 Y# C# X' |+ E
1 H$ n5 F  {; a
to setup4 Q6 R8 F, o) G4 E$ _1 d8 \6 R
6 X0 w: j0 m# q1 z+ I+ l. S
ca
0 ?( K3 A% q0 a0 e; {1 `$ S" Z: V
' S& }# g( O2 O4 d) W
initialize-settings
  k5 r/ s! J( G: c, D

* s" J% h3 |/ T. b. }crt people [setup-turtles]
1 q5 z( q8 K; Z  e& y8 {

: z, d3 ]' u  j, V% jreset-timer

6 a" I/ H6 M+ ~, V6 t. ~3 j$ b& `1 s, Z7 o) D3 i% F
poll-class
2 d) l! A, Z# V( t% `

7 q6 k  i+ V- usetup-plots

" t- x7 g+ m0 m! }$ _
: t7 }, ~% A6 B5 S3 h1 d( V+ h8 {3 Xdo-plots

' G) \/ }5 m% _2 t& w9 Tend
- J# w+ O' P, q
3 ?7 g8 |$ S( Fto initialize-settings) J. f( ]# ]' x% j- r% h2 i

" P/ Y3 m) m0 g6 @& q$ G5 Aset global-reputation-list []

2 V9 n( q7 X7 n6 F" h( ?
  S+ j' D( j  sset credibility-list n-values people [0.5]
2 I3 Y  u* V& f' p9 N: {; i
, T3 v3 L/ o, M5 Y/ M
set honest-service 0

4 |+ z8 W# v' `8 J. j
' A! T: g$ e9 L4 B- bset unhonest-service 0

' {+ Z2 ~7 _# }6 d7 I; ^8 m
  z6 K* ~3 C# lset oscillation 0
% j1 \) f" h* T3 A
0 ~5 y4 U$ K5 b! B. K( W  b) U: x
set rand-dynamic 0
  m4 Y7 H6 o, _* c! _
end
- r- B! e4 R0 {) y- |- d8 j$ p& v2 Q. t- Y: [7 g
to setup-turtles
9 R! f7 C7 Y$ c$ z: lset shape "person"% J" V9 n' m" F! L+ m9 s6 W3 f
setxy random-xcor random-ycor
/ a1 C& n' e* i$ J" ^( I0 Z* aset trade-record-one []% Z+ y& S, K5 p  {
& U! N+ r2 q. i+ x& j, f
set trade-record-all n-values people [(list (? + 1) 0 0)]
; b8 k5 U% ^1 M" l- L; E5 y
' L- ^; I. v7 z( j+ V$ H+ e, A
set trade-record-current []( e) d5 k  k$ p6 o' [  o
set credibility-receive []$ o2 q; ^( D* _
set local-reputation 0.5
& M% X7 M2 B7 F. rset neighbor-total 0
* Y; _+ y3 g  L. u; Q* C! d1 y' ~set trade-times-total 0
% G% N9 Y! _: c7 D' ]set trade-money-total 0
% i, H5 e- ?( ]9 d3 A8 E4 ]( b3 z7 g2 Dset customer nobody
5 [/ P% h& j3 x, ^5 y6 Q; Tset credibility-all n-values people [creat-credibility]: I5 o7 A) T/ f
set credibility n-values people [-1]0 u6 x, @9 g* o- m: ^, `
get-color! r' j- {; d3 B: B

0 O$ `; [/ {2 \; ^1 d+ Oend& D, p) Y! a6 N! J3 u! ~

$ [2 m8 x, o  @1 ^9 {! g% P8 Zto-report creat-credibility: i9 M6 x0 j- p& `
report n-values people [0.5]+ p+ E) r" e0 S% z- c
end
) [6 d3 w- u2 K1 u3 u3 l8 }2 ^( g+ H1 Q" e3 |0 E# t
to setup-plots
0 ?* g. h: e: z/ T  L& S! d, C& |. a
set xmax 30

0 w/ g: Q7 z1 r( X" b0 m$ ~+ k, U4 r2 F# I7 J- x
set ymax 1.0
+ U  N6 H( k" Y' e

, z7 e/ G: a8 k# L- _! B+ T- gclear-all-plots

! v5 I+ T2 L  F# b, L5 y- S( w7 |6 B* X
setup-plot1
3 [' T2 z7 |& X& ]+ v+ v3 _" @

$ l0 q9 X2 S9 q  X. ~, ~setup-plot2
( \# J$ r2 q  s; k: z) s
4 U& k& `' h, I+ e" w7 A/ a& P
setup-plot3

  m  [( q# j5 y; q  X' S1 n% l6 gend
2 ~& V- a+ \9 [8 k8 x( a9 m  @; E( g7 d1 u
;;run time procedures* a/ O& Y' `  w, @; g* D/ e

+ f5 B' y+ W6 B0 p) T: ito go
7 F/ j7 Y+ d3 ?1 h2 U
& B% I0 c( m3 h/ Xask turtles [do-business]
7 a  y  H  B0 b$ a2 p7 w5 h; E
end, b" k5 t4 k. d( r9 a7 W0 @

( i  {( |; j: y( ~5 P4 p' z- \3 ?to do-business ; h# }6 F% p3 C

, S" s% q7 }# V9 w4 x- p7 ?4 G0 v+ |6 z' Q( o" j  h
rt random 360

# p) {# B8 R$ g( h% [( Z9 G8 O- k' Q! ?4 E( w2 {
fd 1
$ r0 w  S7 ^. R( J

+ y/ D/ `3 g4 m- Fifelse(other turtles-here != nobody)[
: g+ Y7 ~- y. P& b: o
" S/ S4 O4 W/ R( g
set customer one-of other turtles-here
" t2 l( V6 T5 K* j9 I! @
. X  G- o, A' n
;; set [customer] of customer myself
: Z) q; G! T3 J3 j
9 \% |9 M& w8 w: d
set [trade-record-one] of self item (([who] of customer) - 1)
" D+ b( ~& W$ U5 D; j5 u7 d[trade-record-all]of self& a3 X- ?& q: m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( h  y/ l; H) n! u2 K; z6 b; X4 y. R

8 a, q- a9 O. _5 W9 k. h* qset [trade-record-one] of customer item (([who] of self) - 1)
3 ^4 x2 h7 Z. R& H# d[trade-record-all]of customer
7 F" Q& @3 U( Z) z

- S& ~/ t; p4 `  ]9 O- |: g3 pset [trade-record-one-len] of self length [trade-record-one] of self

  S2 J# {, m# H) Z, h. ?: {, o- g8 h8 ]6 ]/ m
set trade-record-current( list (timer) (random money-upper-limit))
& u2 B3 r6 c% r- c& Y# z; O

  x+ l" e7 i$ }( {5 @ask self [do-trust]
) A6 f* V* }9 y0 O;;
先求ij的信任度2 ]7 t6 I6 i% M4 e

( Z7 a# }7 n* S$ hif ([trust-ok] of self)9 `! X7 Q6 O0 C; K; u" t" r+ h& J
;;
根据ij的信任度来决定是否与j进行交易[
5 N+ u( N2 ]$ A, `/ s: Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 ~8 F1 `3 M; t% j
- C3 C6 q: _* A" v3 l5 j4 C[

: T& x: S% I9 Q( B3 n8 Z
9 s. y1 v3 h, d; P  [3 E4 ?% qdo-trade

% N3 T! ], D. l8 U  R$ V4 ?; G; X( ^0 v+ }
update-credibility-ijl

9 a6 x1 S( \  u4 s0 I( I* M* F
7 a( S9 K# y: ?* W3 mupdate-credibility-list
# t9 l1 Z. R" d# j2 i: f

! [% v$ l' m; a- N3 g5 h+ H
& z  A' k+ E5 yupdate-global-reputation-list

" p0 I. Q9 O, M9 P6 x! v7 {4 \' H$ D4 ^2 d
poll-class

/ q9 b, ^$ `3 `" R* d. @& a. E- W9 H( {( j
get-color

  I5 @0 a" V( [$ N( F1 Q( ~
, l, m# ]$ G: m! l, ]+ b* \: X]]
9 t/ @) Q. G5 t1 U: W6 f, p/ O; J9 N6 b6 v1 w0 e! h7 g3 I2 N7 N2 L
;;
如果所得的信任度满足条件,则进行交易
9 r, K5 H5 l5 U( x2 m# v- B6 S: v. D' W' y, g- y( a7 g" Y- ^/ `( X
[

7 b; t. y/ ]1 p2 ]% u- o. k4 L
) }0 p" ~! q6 v+ N! G- Nrt random 360

& j5 s! F+ u; ^% E: D7 p* h% |1 J% \2 |2 L! N$ D) T% @; D
fd 1

$ W3 _' O+ N+ Y$ u+ o
* G( K- H& h. I: b2 S9 U]
4 }& {: Z9 @8 C9 |/ d

6 l# c# i- y- b3 F$ hend

2 Z6 @0 @1 V* j; b- |& M4 Q5 j: n9 h3 y' u
to do-trust ' o9 i! k4 v1 X/ [/ U' H% F
set trust-ok False6 w( v1 s: ]/ [' c

* _* H. Y7 \  ^
& w+ @, @" O( I( O
let max-trade-times 0- ~4 t5 G. U# t4 e
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 q( w# D' a! v. wlet max-trade-money 0
( k( W6 ?- G1 i3 S* _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], l* K! I2 A. G0 `/ b
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 E- V( w4 r7 y" h

% N) _- U1 `5 M; w  p8 H
$ n9 q; r* L5 e6 e& @
get-global-proportion/ r3 H1 w; `8 H! z! D/ ^: D# k% h
let trust-value
0 v& ]! D" n2 {1 p0 blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
1 @" B$ J, k3 R! n
if(trust-value > trade-trust-value)# }( ?* n) D0 i% {  }/ R
[set trust-ok true]0 \3 s" W% k/ a+ n9 e: ~
end( F  r# Z' f) c( ]

6 w4 P8 j4 M1 h2 Q/ l) k8 O; N/ ^to get-global-proportion& C$ F2 m/ W6 h4 P  x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 N6 [+ Y8 A9 V5 O& x[set global-proportion 0]+ I. X: A  x7 R* l: ^
[let i 0
# L1 r0 ?# r0 M% p, C. z2 slet sum-money 0
7 d, f; u* w3 Z1 q3 M. @while[ i < people]  J: ~2 h2 p3 t+ i
[
' t( I/ a: m* a4 F2 O% j8 [if( length (item i$ \; O) {+ d9 y0 f) `# @
[trade-record-all] of customer) > 3 )
; n0 k9 L6 w! @" V/ e
[- c0 P, r' x. W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  Q- r/ R8 M9 l3 U0 L
]( F5 o- P7 y9 Q1 t$ M
]( q- @7 }) |# Y) _8 y$ h
let j 0
" g' }, e+ J7 C. S* flet note 03 z! y, p/ V4 d0 J
while[ j < people]& D( j) W1 o  w6 j
[1 D; s# b0 e3 W4 w1 l& o) f! o
if( length (item i! x6 s; K- z: D" h/ |2 L/ _6 K
[trade-record-all] of customer) > 3 )

" m" n4 c: `: r2 d! D[
' E7 F( _" ]1 C5 r" t' Zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# M( P" P% f9 k1 l( M7 f6 k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 d' s) k0 q! T5 @$ t3 f( D[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 u6 E& k# U0 ?+ {+ R  x]
# m, i5 f& B+ n  t]# _3 K3 E- ~2 b* D: c! a
set global-proportion note
. e! z$ V8 k( Z% t2 f% Z]
# B1 Q7 P( ?2 g; @  t& P  `1 {end: J" R1 c( X% w' ]  {; r0 W

% P2 U, V9 t2 K+ g$ Hto do-trade
( M" H& G3 h. h$ g;;
这个过程实际上是给双方作出评价的过程
( d: m8 |, S  yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ s! N* {/ ~2 `5 b6 ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& v7 t# H0 m* h" G: r* h( Pset trade-record-current lput(timer) trade-record-current
) O; L- _0 c7 p  t6 u;;
评价时间. m7 X, L7 ~* B& ]
ask myself [
; P, _3 G# L5 [8 a& \- Uupdate-local-reputation! U% V! c. O2 T7 U, Q6 b" i
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 g4 M, ?" {$ G  A4 w$ l! i& y]
6 t) p' I8 V- yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% l3 T3 \) C9 b;;
将此次交易的记录加入到trade-record-one
7 z" A3 x- I- }" z" N4 k) C5 Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  A: \" k: Y- [9 ^2 T% B
let note (item 2 trade-record-current )% N! n$ N! A, i+ f- T! ~
set trade-record-current6 c, Y9 T" p* A, a# j5 Z
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 B& I* L: g6 Q' e: k  w/ }7 \set trade-record-current
' A3 ]- H4 h/ N. ~, N: {(replace-item 3 trade-record-current note)
: o6 A  o1 X: F& m4 f: T$ m, C: N) D. K

3 u9 d, K( ~% H# W. q- v  W! |" f5 u* vask customer [5 ]: i  [! @& ]5 A
update-local-reputation
2 a7 Z- X. e6 @5 z6 X+ p4 Mset trade-record-current
9 @9 i  Q' a0 I7 r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# x, h- a+ K8 W: v6 S3 [
]5 o5 n% M2 _+ q+ i2 m

, s. g+ q% C$ W$ {# a" ]# g
, V* n4 j, b: l: P3 }$ n( z! l! M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& ^" t: ^2 T) A( W0 J$ _
+ P! f# A9 S: T9 F* w' F; t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# q1 i# Y* L. J;;
将此次交易的记录加入到customertrade-record-all
5 @6 `( X/ d! e# k, `- G* |  g6 wend7 l  w3 ^8 v" G; H5 ?" R+ ]; Z9 V
' K) j* W( J) o$ J7 b
to update-local-reputation/ O2 Q1 g# q! b0 b1 n% r5 _
set [trade-record-one-len] of myself length [trade-record-one] of myself
3 ~/ H8 r9 ]7 B/ `; H3 R0 ?' m
, P( W( z! @; F/ @5 o! A, u$ _& C9 b7 z9 m# `
;;if [trade-record-one-len] of myself > 3

( E8 r" Z3 l& R- C/ _# Q/ s( \update-neighbor-total6 B+ T2 V# n  z% n# L
;;
更新邻居节点的数目,在此进行
& u5 ~# `* O! u' j# Flet i 31 h! [9 ?8 g1 Q& M) Q
let sum-time 0$ t/ Y. ]# ^+ W8 t; o
while[i < [trade-record-one-len] of myself]
4 k: `0 s$ W: D+ q[- b  F: V& ~9 e+ n3 D. x! J& G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- Y- Z1 B* g- [4 d& R, C2 W7 k! Z
set i( v, ?' R$ O  Q2 R
( i + 1)
3 m0 }( a- t+ m( F1 l! ^
]
1 W9 D2 e" T5 E/ {. mlet j 39 G# ^% D+ q1 Y9 t
let sum-money 0
8 S0 O) V3 h8 c- m/ twhile[j < [trade-record-one-len] of myself]
9 s" m) {( z" G9 h. M  j) ?$ V[1 F0 K( P) m+ P* [3 H) P/ E0 c  P3 z
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)
$ ?+ w/ J5 z* F# G6 x# T& ^set j
9 U5 C3 f4 [7 x& Z( ?( j + 1)

7 K( t1 O3 I: Q/ p8 N3 Y& `]) r+ J' b; |& ^: ~. g3 I
let k 33 {' C* _/ ?, H- U- A
let power 0  a, J, G# ^% t* p+ [  u) @$ h
let local 0) L0 q! g, ], R) {
while [k <[trade-record-one-len] of myself]- Y& B' k! _9 I6 a/ l
[9 Y  R$ c+ Q$ S$ {+ W
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)
" Q0 i2 u5 V( f# X+ _8 gset k (k + 1), e1 K$ A3 x( y) `& G
]
) f, c* n9 M6 g4 K; g4 Nset [local-reputation] of myself (local)
9 C( w' |: Z7 dend$ f6 q5 ]5 G/ N( T- R
9 p5 Q6 x. s; }9 ]% v: e
to update-neighbor-total
. N* ~8 j7 l4 {2 |9 w) r
; i! D( @3 p& W/ Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: s# p* c+ w4 Z# G0 y; H; F9 K# e% ~% D$ f7 t" `# H8 }. K
- T$ u* @" I3 F
end2 d/ L/ m( G- `2 m

% u* B2 C1 S8 b2 Eto update-credibility-ijl
" k& q0 r% @; Q2 i) w
* O9 I% q3 u: e* b6 e! h! S) 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。
5 Q& V/ o+ R' Z% p8 V0 V) l# Rlet l 0) k- d2 V) o+ ?: ?
while[ l < people ]" a& H! C: i* i: ]7 v
;;
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 s6 Z1 z+ l3 q+ T( n, i$ K6 ~[# |; x4 ^5 J8 P, O8 B& t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 w! s# O  o" z' F) c* c9 O; _if (trade-record-one-j-l-len > 3)$ f# w5 C! B# q" Q4 b) {& 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( ^; Q1 v  u# D( A
let i 3% k0 P+ T# C+ @$ z$ a
let sum-time 01 N1 r3 D# a: U; J$ k; g% o
while[i < trade-record-one-len]
5 x9 c6 Z5 u5 B[
. }  h# \" b7 K0 D& Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 I. v+ `& \, I% P+ T; X7 Pset i! E: Y3 U7 q% n2 T* O
( i + 1)
+ j5 d, }" z, }5 \8 t2 H
]7 b* w9 n2 v8 K7 D9 ^% h
let credibility-i-j-l 0+ W! R# A: W) ?, @2 {7 h
;;i
评价(jjl的评价)
7 Z: o: }2 V+ q& olet j 35 S6 Q5 V' m- W0 p$ w9 a  D; X
let k 4; L* t& @. v- r' f2 P6 U) r2 a2 F; O2 {
while[j < trade-record-one-len]! @9 A. ~( S9 n& p! T% k
[
# k% k6 ~% q; M# j, `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
- W# X* M+ M) s% g9 Zset 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)
* o/ y8 [: \! F* {& ^set j
" Z* y& n% E0 L. C; W( j + 1)

8 E& q' ^5 Q6 L0 A1 k2 n]
$ Z# F& n+ V1 o& c9 Eset [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 ))6 W$ e8 m! J# B
% K( f' f! O% E  Q6 ?
7 J7 x& B! W! f* r& b& w+ b) Q  o
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) }* h* `) V) U! `$ g- K
;;
及时更新il的评价质量的评价
6 Q- |3 S0 ^0 X8 T1 qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ X7 l" m9 x6 C
set l (l + 1)2 C  _# |! E) L& Q
]  l9 k# _4 j4 f; Z% G! U  }6 ?1 T
end1 I2 M' T8 }& b4 _$ x7 F- V
, ~- p* G2 ^( U/ Q
to update-credibility-list. @! J( }$ q2 v3 T& c' e+ b
let i 0& S3 c3 R7 f+ B: o, O
while[i < people]3 Z2 `+ c$ C) x! d
[  g, [' [5 X  o  _3 u. Q# u1 Y5 t
let j 0: ^; _! B: `" u$ ^! t3 F
let note 0
- p/ m5 v% m7 x7 Glet k 0& d( W9 l$ S7 P, K/ [- P: \/ l9 \# Z
;;
计作出过评价的邻居节点的数目
  i, C8 B0 a3 u; v. g1 `2 D' Twhile[j < people]
- M6 ?8 P: D9 ?. _  b3 U[3 @+ {+ z) ^: b. A( h! F
if (item j( [credibility] of turtle (i + 1)) != -1)
1 R$ ~+ R- L- V, C% x;;
判断是否给本turtle的评价质量做出过评价的节点6 S+ C$ Z" M. _3 s" ?8 z2 Z5 n
[set note (note + item j ([credibility]of turtle (i + 1)))/ x- d2 k( N4 S: V5 t) y
;;*(exp (-(people - 2)))/(people - 2))]
) B* [4 |; Y; j4 O8 c: b0 X" y( n
set k (k + 1)
" B, |  Y/ \4 s5 d# g- |' W/ u]
. ]5 \8 f' T/ t/ X; c4 T% |set j (j + 1)( e7 ?+ P# M6 U" U+ a. H. U
]
! L5 g3 @8 M& wset note (note *(exp (- (1 / k)))/ k)9 O) s' T! t0 A$ L4 U
set credibility-list (replace-item i credibility-list note)
/ n. D% d# f+ O1 `3 p$ T% a5 pset i (i + 1)
0 ~# f$ N/ W# c0 b# e$ e]5 @. l- I1 O! }8 a# p- M% v% f; G7 L0 Q
end8 F3 U" X4 a) s' g5 A

) o+ [6 P/ G1 h' p8 Z4 z- Bto update-global-reputation-list
4 G+ m. ^- m: p# e& S8 Alet j 01 Y3 \( i8 a! K+ q) x( x1 v
while[j < people]6 [/ F8 K: G# P3 V8 _5 c+ h
[* s+ ]( ~4 p: m8 l7 `, d
let new 0! q+ {$ o  E2 C; {1 o( `
;;
暂存新的一个全局声誉
9 [2 ~. q4 }$ x) Hlet i 0' X$ u  t! w/ ~" i: K! Q! u9 k
let sum-money 0
5 v3 Y3 t. Z1 ]& z9 S" tlet credibility-money 02 t& u6 h+ r7 B) V
while [i < people]
2 a. m- j6 o+ w( ^7 }. y[
  ^$ R3 I4 o. D6 hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 d* F% P# K# a1 k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 E5 [# f3 Z7 I4 R% g7 p' X; T
set i (i + 1)
: H3 d  K7 G( D) Z, M0 Z]6 R1 M2 x2 m0 N: J3 n# Z8 e
let k 0/ D, [; m+ C. d6 P
let new1 09 ^$ a% ~0 f8 ?1 Z  [
while [k < people]3 o0 D% X! p% l9 Q+ A2 x7 r
[, o  p; W) ]' v0 }) f( D
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)' ^  L# y9 a4 O% [' }" y
set k (k + 1)( Q. }) ]# |. g- f9 B
]
8 M  r/ [% T2 uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% T" J6 X2 f2 u7 O1 N2 jset global-reputation-list (replace-item j global-reputation-list new). o; H; d' o7 q+ K
set j (j + 1)" D4 n) [* c- }% x3 C' K# @% m
]
/ b* n1 d0 h% w. uend4 G3 i4 E( {9 p, z6 X# M
1 C- I2 c0 t4 Z) N& H  T( Q8 e
- v  d6 c- ?/ V, O& J

' [2 ]( u7 o4 Pto get-color
5 {8 W4 ^3 R% i. q; @- ]% h7 }* v% R& v% ~+ R
set color blue
6 i& V5 D' P  [- b6 c8 K1 s6 p, |! |
end# f$ a; n. O1 U, L
$ j$ J+ ]# h: A4 S7 B
to poll-class6 ~% T- K: S, Q. A' V3 p
end
9 j( g1 t* Y' a0 A
6 ]9 \5 P$ f; y0 J9 R$ d3 S9 H: g6 Eto setup-plot1
% S, }$ V% ^3 k+ ]& o: i; I" F3 B! T( p
set-current-plot "Trends-of-Local-reputation"

/ k; d) j- y) [0 R* j& P- V0 L
7 [; h1 o" i6 S1 m- T4 K% [3 Aset-plot-x-range 0 xmax

& ~0 R, a; a/ v$ i1 ]  x8 a" j! `/ W8 {
set-plot-y-range 0.0 ymax
/ b! q/ c# p* V* c  i+ \8 G+ U! n( @
end/ K& t8 ~2 @* Q; r% ?" o

+ ]5 E% X( V/ S8 l( B' uto setup-plot2
& g( D4 y0 X) o+ H2 n. U" x3 R5 Q1 {2 s* n3 s6 K8 h/ {
set-current-plot "Trends-of-global-reputation"

" W5 J0 w# [! u4 I+ i! J
2 i3 I* @) @& S8 Rset-plot-x-range 0 xmax
& Q2 h0 |( ]$ c

( T  H/ V" @! ?. x, F5 H% Dset-plot-y-range 0.0 ymax
9 B: s5 Z8 }0 P! Y
end/ W6 i5 ?# A& q

# a2 G. T% t) l, s7 d, Hto setup-plot3! _  H0 s- ]) {  H

% ?# [! U, @& P  rset-current-plot "Trends-of-credibility"
8 C: e! W* q) r! Q9 ]; f
& Y$ J, d1 K$ @
set-plot-x-range 0 xmax

+ l. k# F& A4 `8 E+ e" x6 K9 i7 h
set-plot-y-range 0.0 ymax
$ i) X& i5 @& ]
end' u1 Q9 \: \' ]8 Y. \

/ R& s8 |0 V& y" Nto do-plots
4 n3 b; A: e9 @set-current-plot "Trends-of-Local-reputation"
% @$ \, z& j$ D4 L& M+ Q5 Qset-current-plot-pen "Honest service"
  r# J& s2 D, ?5 ?# @8 p5 send
5 |) x. o+ ^" Z
5 P6 `7 B9 R/ a+ ~- P4 h+ m+ V* }[ 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.5 m) X* e6 B- {, Q9 U' N
# ?3 c" f" O' f
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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