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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:0 Z. Q  `* t4 T* U( W
to do-business
2 A/ a0 B8 v9 f( S" i, ` rt random 360& d* {1 Q$ z$ C& u/ k
fd 1" ?" f/ W: T& Q$ X
ifelse(other turtles-here != nobody)[
5 k8 w2 w6 F( p   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.# N2 o4 P; k' h; c2 g  y% R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 D# J# u; l6 E2 U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& e* c; @& L4 z7 i, E   set [trade-record-one-len] of self length [trade-record-one] of self  r8 K( t+ U# \" G/ u$ O' T
   set trade-record-current( list (timer) (random money-upper-limit)). V& F* B9 p1 H: `1 w% f, H
! J! j: \. ]0 F
问题的提示如下:
3 Y- M& c7 X4 r8 [- _: U& l9 u
4 T3 Q7 p+ b3 x( _0 ierror while turtle 50 running OF in procedure DO-BUSINESS
! k- q! |4 T: S  called by procedure GO
$ U& q' n( [- z/ t3 F, k6 |OF expected input to be a turtle agentset or turtle but got NOBODY instead.; T( h+ |. g8 N7 z. U
(halted running of go), L* S+ e0 }- x5 e4 w3 b
! z# d6 L0 o& c; z/ ~+ g
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~~: U8 |1 K. Y; 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
! z+ m5 x* F5 U7 wglobals[
: ]% d' c  E* k% Y$ x+ _' @7 }xmax+ O+ Q2 L" f' @1 a$ F
ymax
+ c  T& }6 ~# ^' ]% t) ~, L4 aglobal-reputation-list3 e# |$ u7 I  T" a9 M1 V9 z5 }3 A! v
* e) n% ~- m; N+ E
;;
每一个turtle的全局声誉都存在此LIST
+ e: v9 R3 |) ycredibility-list
* F$ K9 H( ^. E;;
每一个turtle的评价可信度3 n" B9 v8 q6 r$ ^! a7 ?
honest-service
: W' h3 f  V: U9 w" ]# Dunhonest-service; ^/ E$ Z* o+ C. y
oscillation! R# z9 b2 A# \) l
rand-dynamic
1 U9 u; y) P( b$ S]: H, z, e) T4 F, A& G% g
' m) A5 i! ]) M. w( m- t0 I3 y
turtles-own[
- m( z" J* g" n! Btrade-record-all" f1 W4 u( w% u  |- P+ U
;;a list of lists,
trade-record-one组成" R& ~" w+ X$ s, I; K5 u8 m; u
trade-record-one3 c' a6 i' c$ ?# f# j0 V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 ~4 v# f% o$ M
9 w9 _2 S% h1 J8 H7 B;;[
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]]9 C  [+ t3 [( v( K' k; a7 ]
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
9 b3 K5 s. G9 N# g) x# R# @, xcredibility-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
, ]$ P( n0 _+ w2 vneighbor-total3 y- g6 i" [# }* _  U7 Y
;;
记录该turtle的邻居节点的数目1 o1 X4 L" p: Y" H5 O. o
trade-time
. n( t9 l8 T+ P/ B, K;;
当前发生交易的turtle的交易时间# }% M( z  h  r: I! [$ o' V4 Q
appraise-give
3 i0 F; M+ a2 s& K( u;;
当前发生交易时给出的评价
7 a" @5 c, I" qappraise-receive* R; f( V. a+ l# H1 {% V* k
;;
当前发生交易时收到的评价* n, k5 K$ z/ Z# k) p( F
appraise-time
7 D  W  L, Y$ v" u6 l;;
当前发生交易时的评价时间
/ k! J9 E! u& p4 f# Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 ~' o! [0 X' h( n; Q$ ftrade-times-total% `% K/ J% |0 c0 W
;;
与当前turtle的交易总次数
; S3 ~6 J' i% D( ktrade-money-total
- ?6 l% B/ \. b;;
与当前turtle的交易总金额+ g2 K. j" c1 a
local-reputation
9 O# `5 h, r5 P1 }7 v3 Tglobal-reputation- y  D) f% P( ~/ M" G8 L1 d
credibility* x; I; h2 ]4 h+ s1 j, {
;;
评价可信度,每次交易后都需要更新
" L8 Z! b2 R; e# ?: s# B, Vcredibility-all
. f* j+ R1 t, ^7 X! 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
/ P. [3 @3 b+ x) A
) d. [9 r+ c% b;;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. N* I4 i# j2 ^
credibility-one
, V& {* ?$ s* j1 C;;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- U2 _  d4 ?9 A' @. ?
global-proportion7 u7 I% V1 ~! _5 H( Y% b" V
customer
4 _) t0 ~+ f* `2 N( z3 b6 ycustomer-no) {. y3 p7 |" y% a/ i# p
trust-ok" y' z. J7 C" J* K
trade-record-one-len;;trade-record-one的长度+ j0 |) m0 _8 t6 E  b4 @
]
6 E/ z( N5 J" L5 T1 m! H7 Y; e/ g9 y9 W, ]$ U! Z% ^+ \1 W0 F7 J
;;setup procedure' g; O: C. c$ E7 F1 U
7 N- [, y1 c, v9 |' g! [% {
to setup
5 [  _1 Q. ^* T& d1 A% }6 V4 \/ F% L9 b1 ]( t% t5 f
ca
6 t7 [5 _  h0 N4 `3 Z  I

2 L1 \$ z$ T. D/ R3 L* d+ q" ainitialize-settings
1 [* I6 Z" K& |$ b! f

" F; T! u- S$ B# K* I( x+ \9 Gcrt people [setup-turtles]
) z( {; l3 C5 a

& l2 T: c3 n% e! L: I' Qreset-timer
% {" c  h" [. N, f" i* G. l

) H# a* i* R: ~( o7 B) b! {& Epoll-class
5 o- o; ~$ O/ x

8 @7 ^. D4 A, N! Hsetup-plots

4 v2 n' Z  j$ S1 a. b
5 M/ J' P9 l  R; A  K/ {do-plots
: u7 C7 ]5 T, r+ j
end
0 i  X# k9 Y& C* W9 s8 G( E: P) E- q7 T
to initialize-settings
6 \2 z; n& ?7 s
0 d( ?% `+ f$ @1 C' l) A/ Jset global-reputation-list []
( D( m& e. R% W1 `* ?2 K8 b

; E% A5 F+ c1 @. vset credibility-list n-values people [0.5]
7 ^7 s  \4 j7 e$ Z3 g

! u( n7 A' i* v) `' Q2 {! i0 |) xset honest-service 0
! [( h9 B4 j: e/ c

# Q& @2 n( K9 g7 c  z% Q8 Dset unhonest-service 0

  c3 `' V' _! R1 |2 z" v4 z5 }4 d1 e+ C( W7 X9 {
set oscillation 0
. A. p( f2 ~) d' o( B" [1 |* t* P
5 h9 f" W* F% u' q6 B& G7 v
set rand-dynamic 0
' W* Q  ~% F6 Y& H- b
end
, W  n6 k& j6 ]  ^4 M! H* C* V# Z' w. h4 U1 c: |# z/ w
to setup-turtles
7 S4 O0 _: X8 i% k2 F/ [4 Lset shape "person"4 x: N1 e+ q/ Y' s  H0 R
setxy random-xcor random-ycor* K8 F# w- [: }, Q" i  u3 W
set trade-record-one []4 @- J! P; n5 c
. j5 d( e6 ]/ `3 G; p, ?& s
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 v9 ?- D; W5 i6 t( g3 k( H

2 @6 T5 K/ ^" ?& X; u! Pset trade-record-current []7 A( f# @+ T/ Y3 o$ s  [
set credibility-receive []  R5 C+ y# ?7 A7 X0 n& x. H! i
set local-reputation 0.5
/ O4 F/ [. W) i: ?  z3 Tset neighbor-total 0: X- c/ s5 z( K0 u
set trade-times-total 0
( S6 G: c# X  [' R% Nset trade-money-total 0
: z$ B. a& {. \7 |; M7 uset customer nobody
) C% A( z$ |! hset credibility-all n-values people [creat-credibility]
& Z% Z' v0 [( Lset credibility n-values people [-1]# J& n6 H/ a+ @8 q
get-color. `, C% ~) u- {3 X9 i: z+ @8 O9 G$ p) h
. b! }/ p, d5 T# S
end
# h, z7 y& f) L$ J7 Y( G. j( \" F. h: Z/ {! |( U+ }; B
to-report creat-credibility  |  {/ `" s5 o& f1 o
report n-values people [0.5]2 ~4 {$ w: J3 c" W) ]! G- u. q
end
2 d2 ^3 d9 C4 w" V; z, k; v# @& @- [2 O# [
to setup-plots
/ t: f7 v( z6 v$ G2 o/ c! f' ^
+ f! p6 ^# t9 ?' r& K- nset xmax 30

# s+ I! T, n1 [1 P+ }5 w5 L
: B" ?9 K0 i1 t$ B6 I) o" k8 {# hset ymax 1.0

  ?# K$ X% C: }7 F( \/ z
9 D, [3 |/ T/ O. n, Sclear-all-plots

8 Q# U" \% I1 i. u4 j
% p: \: w$ J0 P! Ksetup-plot1

$ C6 A: E+ h) u3 r7 J  L
- U1 K5 D( j- k4 j- Usetup-plot2
8 b4 l5 f% [. _' @$ W

2 a! {$ }5 W1 \setup-plot3

3 Y/ O6 H: j  L2 x1 N( A, U0 cend
' f  e7 a- g( u/ n7 L! M& |' ~( N% a1 [. e8 T2 D& c
;;run time procedures; e6 E, @; {- I5 U
' Q/ t; y# F& E7 F; D5 o' e( g
to go
) p2 ?; l7 K5 J% _1 x% Z) L7 {$ _% y# x, a9 B* l  q
ask turtles [do-business]
* p! c3 \5 e1 E: H, ^7 x+ c- B1 e$ ~
end
/ b: ?' @# Q# _" h' _( W
0 ^2 ?9 }. A( ]/ ~/ h3 E/ D/ Hto do-business
' i3 b( K3 O  y1 ^

' i* a3 z2 _) E" {% R+ C# X" R
; ?( a& k( t2 M. t* y7 @rt random 360
4 D) E: Z$ g$ y! {4 U* ^
$ I! P: p% n7 _8 k
fd 1

" C6 b( o+ w. a- {) _# q4 `
: v- R2 b5 L0 R$ U5 h- Xifelse(other turtles-here != nobody)[

: ]4 h1 k, s% H
# W  S9 e6 R1 cset customer one-of other turtles-here
/ K6 }+ N2 h2 Y$ F
  V7 Q( U& L2 V' n
;; set [customer] of customer myself

  _& F2 k9 L( B2 o- Q  Y0 x; K4 V3 e" K8 P4 ?
set [trade-record-one] of self item (([who] of customer) - 1)
) N: Q3 n4 S( Z" v; X[trade-record-all]of self- `  J% `6 W2 \! F  M; o+ ?) _' L
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 `5 p& C. Y. R& R  G! x. T. E1 R; D; V$ N; W
set [trade-record-one] of customer item (([who] of self) - 1)
8 R( f" ?3 D. N! u1 w$ f+ w( s[trade-record-all]of customer

9 b; j% i1 l4 M. }
0 |9 m0 W! O$ U  x& Mset [trade-record-one-len] of self length [trade-record-one] of self

- r' {# f# k- k" r$ I4 o- y
$ q. Z6 ^5 \) d. z" [/ J! |set trade-record-current( list (timer) (random money-upper-limit))
, _, w% Y- i$ L* O7 E& T

! D1 Z. e" m# p+ L; Eask self [do-trust]
+ d# E5 z- q$ Z3 N$ y7 `;;
先求ij的信任度& b; Y7 U$ |- e+ _6 y, W" X$ g
. w: }& x2 f( i  ^# k- L( O
if ([trust-ok] of self)
& H- i  V7 d/ n/ d- F;;
根据ij的信任度来决定是否与j进行交易[
  ~8 V  e4 r3 ^! b% \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ n, ^$ a. ?# d: h" Z, _$ E8 ^

& ~, \+ l& E! j% s& ~8 T" @: Z5 B[

) M) a& j+ y& o& \, q2 B- X) R8 U; d1 w
do-trade

2 C6 d$ x% A* a0 V/ i9 q& z* Y# U# @' X- J; y- X
update-credibility-ijl
6 @+ F! ]1 \/ R/ O

( _# ~+ C+ z% ~1 W( t0 {update-credibility-list
0 q  [+ ]7 Z; M: `* p
- [4 f4 |4 X" U

6 V1 g' N% p# Oupdate-global-reputation-list
  X; u$ e8 c0 c0 z: n
2 f' _& I4 W8 L& A% ~+ L: z# J
poll-class
3 S9 ?# ^+ `" t
  w6 C- H( d* W
get-color

! E+ v; a" V# R6 G+ ~+ N' E6 w( }$ b6 V8 u- ]; F5 w' ^" d
]]
0 |$ m/ Q# R8 `$ D1 K4 x" P0 k/ D% P+ K( v; F- \
;;
如果所得的信任度满足条件,则进行交易
  s! l* y, V& Y: D) a& R) x% u
1 ]" c  E3 [+ g( n[
$ v0 B+ d0 j% r1 p0 @7 {& q  E0 n
; R, O9 m9 N) [5 f& B' {
rt random 360

8 g4 W  a3 ?: i
& C8 L5 l1 A0 C/ n+ k" x; Vfd 1
( U: z: h% x! j( g* @0 O
% V. L. p( _' ^6 a
]

* h6 G1 O/ `0 P$ H4 e, ~5 X$ B& B4 y+ h. A
end
$ }. F/ s% {! z: B: u1 V
) z; L( y8 D$ P' v, ?! s; V, `& L0 K
to do-trust ) Y% e1 K( W  j/ J
set trust-ok False! t$ Z) ?8 e% s0 D4 i% S; U& f' U

- G- t6 b. w/ A$ n3 R, C6 u5 O

' m4 y, T2 ^* h4 q% z. D- alet max-trade-times 0' N# ?# t9 r  h
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 {: F: d7 }% b  H0 ?
let max-trade-money 0
: B( }! t7 p0 c0 N( a! ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 L( H& }8 z5 z1 [; blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- t; `3 B& D9 b1 o
, e. Z  o" F5 G# T  _
2 D2 k0 t6 k7 }! e
get-global-proportion$ d" }' J. k2 K% Y+ z
let trust-value3 r# {' Z+ ?  h) W; U: o1 \  Z4 V
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)

6 o) q' {- d) ]  \0 {$ zif(trust-value > trade-trust-value)- n$ A! q+ _/ Z- e$ P9 H1 R3 j
[set trust-ok true]6 F' b6 A' F( Q; q7 |
end
0 b/ r6 d" [( \9 {  I) M  B! t& Y! `0 y! ^
to get-global-proportion
) i; C# o; |8 W. I) ~! ^9 R: p0 sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 B1 P$ ~% @$ n1 C- @
[set global-proportion 0]
" e5 ^# {0 i) E9 \# B- o6 I[let i 0
$ `: s  B5 f+ s+ S# [& ^- P3 xlet sum-money 0
1 R* E% q8 }* Bwhile[ i < people]
6 G  R# d2 y5 r- l$ D[1 R" [" ]! ]! E5 S+ Q3 |( p
if( length (item i3 d/ `, B" W% Y" R. g% Z
[trade-record-all] of customer) > 3 )
3 N7 d: l/ D& k" Q
[& T( ^" ?9 V" Q+ C# `3 }
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# Q, {, {: ~% H' S]
; p! z& Q& b( m9 m% Q. n" w" q1 p$ A]8 ~% L2 `+ C" j4 m
let j 00 d. t& q' x* |5 v' h) j
let note 0
3 [" S; T3 w$ J2 [while[ j < people]5 n- m8 m! U) y3 k" V; X; _
[
2 |* B8 J8 r/ A  u/ I( Uif( length (item i) p, c  L) k( C/ N1 V" M: K5 E; E
[trade-record-all] of customer) > 3 )

0 E+ d7 F: c; v- Q0 ~' m, P# g[' x# d# }: O$ S5 d5 R
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ x2 H" ], E5 p; u8 `) ^" b* E  F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" i0 D! c3 K2 I+ ]3 \[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; s9 A- u& T6 d9 R2 V]: A  v  I0 q7 i+ d7 h1 W
]+ P' H9 o  D- h0 J/ R
set global-proportion note
# T9 h5 h  x- {; [4 g* E]
$ Y7 m$ ~# V, E8 _. b2 ^, L/ qend1 L1 o5 v0 Z/ t7 w% T6 Y* B# f

7 k; z9 r0 F! a2 P2 |; Y+ c7 n+ mto do-trade, ], \  \  o: T! o+ ?. x8 ~* f5 |
;;
这个过程实际上是给双方作出评价的过程
$ I7 h/ U& `" F0 x$ n8 y9 }4 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* R% _+ e4 N. a2 I3 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 |' Y' M7 ^0 s+ @set trade-record-current lput(timer) trade-record-current
+ r! V# u9 u$ C9 `- _4 o4 N7 [;;
评价时间: z2 _! c! ?3 ]6 U
ask myself [( A% }4 V4 r0 q! H
update-local-reputation
5 h1 J: q, G) m4 W! ]- ?/ B* ?set trade-record-current lput([local-reputation] of myself) trade-record-current
7 ]. [5 c! P5 v# S3 ]- u# W: {3 m]9 ^: K. I2 a. a' ?# a1 L+ i/ {" _# D1 q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 ?) b4 \; N  M; F2 ~;;
将此次交易的记录加入到trade-record-one
3 s4 D) U6 z; K) X2 H8 bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 @  ]" t; P) z( f& p" blet note (item 2 trade-record-current )( ^- f0 o5 ?! ?9 s
set trade-record-current; F) w. `) L( ?1 h: B' i
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 }1 M9 m) Y2 ~' I' _2 U" Uset trade-record-current
4 v2 _/ D5 G/ p3 C# t2 ^. ^& c(replace-item 3 trade-record-current note)! ^! ?* n9 x9 w% a

. {/ q8 |$ L  n: P/ \' L
# s1 f+ ~: o' z1 `
ask customer [
" i3 {+ Q; ~1 w' pupdate-local-reputation0 w5 y. L8 v; t2 T0 g* d
set trade-record-current9 w( G# p; m6 H1 X6 h& [* C
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) F- w, u, P5 X' `' v" J]* H, ]# ]! V) R9 u* L& N

. s* P$ B' U! q; C4 ~: S
" W) U5 O5 P0 d% o' L9 B* g( a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& Z2 G4 ~* @# B8 b1 \

: Z0 L& b; m3 ~1 jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 C" |; y( _% i( U" J7 }9 m
;;
将此次交易的记录加入到customertrade-record-all
4 g$ l. W+ j. }5 B- W7 mend* A3 o. p' p/ u
  T# E0 l7 V) o9 q! d3 N% e& ^1 ?
to update-local-reputation9 M4 Z+ g& ~8 j, J
set [trade-record-one-len] of myself length [trade-record-one] of myself4 ]  Q* I& J6 K) J" m7 X
9 C2 L- J& W$ R! x
+ h: q1 b  T4 c6 G9 W7 z
;;if [trade-record-one-len] of myself > 3
+ a# j- _/ T2 t1 F) }- a- i" u, K; H
update-neighbor-total
$ v/ t) i: c, e9 P;;
更新邻居节点的数目,在此进行) {9 o6 z1 A, V) Y( H3 J) ]
let i 3
( e) ^6 R3 F3 u2 x* flet sum-time 0
' z1 v* z- a9 Zwhile[i < [trade-record-one-len] of myself]
' Y  \5 U0 ]: D" J4 e$ d6 `: B[
* A5 E1 q  }7 w. G% s0 fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 }, J8 ?* }9 }% Kset i$ i) _2 L: Q) f% Q# S& {
( i + 1)

8 W( |3 x, Z* l6 v9 |$ t]! ^' O: |+ R) k  }& O" ~
let j 38 g! E  P2 M2 |1 h* O" v
let sum-money 0
( w0 i. M8 o/ Q* z" a5 uwhile[j < [trade-record-one-len] of myself]
& n7 d! F; x+ A9 `0 e# ^[& ~3 r9 y; J" v( v) M" _! [9 T: l
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)
" |5 Y& k& F: m; t1 hset j4 F% X# W  A$ W  d7 U. T, |
( j + 1)

* M( e% }8 M3 G: a& c, x4 o* P6 ~3 @]1 d) S( q3 j: S6 f1 E9 t. L2 Z
let k 3
" F* B0 I1 n) |$ }. R- r0 jlet power 0
2 j3 C1 K$ C: K9 }/ ~" slet local 0
! t) U" R: s8 N" Hwhile [k <[trade-record-one-len] of myself]. Q) _- G- D3 r. R
[+ V4 i' _3 E: x# v
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) / p' ]$ l( S4 e9 c$ Q' s
set k (k + 1)2 S& p0 r* Q  h4 Q, o
]) @+ J$ @. x- e9 ?7 M6 C2 W- d
set [local-reputation] of myself (local)+ [9 H: O8 p' Z5 [5 M
end" [$ ~) g6 z  ]. Z

. Q' ~) S- {& T: Gto update-neighbor-total
* K8 ]. q4 m) g# |6 j# ^  L) n# y; }+ t, U! Y8 O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 @* v, M- D  a/ V* z  {3 {9 H! Q& w) p( F  g  m

: b0 C' K2 F0 r, W7 Pend
4 R/ O1 p- s3 Z; h# e6 z8 x; [. \4 \  r
to update-credibility-ijl ; y& S, J) f$ m$ p2 W5 p) d4 V7 V
" f, j: \3 L8 w7 j& }& F
;;
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。$ Z4 \) P0 H% S& Q! Q6 i/ }
let l 0
  U1 a# o8 T: i3 h# s* o8 c9 }while[ l < people ]; @6 Y% n' h, k' ~) {# R0 J' v3 _
;;
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 i8 u* C* B9 q, R5 e0 v. Z[
8 L- U+ e3 g7 zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ f! M6 m) W0 I  o2 T% B5 F
if (trade-record-one-j-l-len > 3)" @- q& l5 I5 L3 Q
[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
) W4 n. h4 Y; t3 |3 flet i 3" @% F  D0 _: |
let sum-time 0
4 F" o4 A. e& @4 C' S/ |1 ~" A5 Y. @while[i < trade-record-one-len]
2 k9 `9 M4 }: |, r, G4 V[: S; K. a# Q% s% g7 D# _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  N2 ^8 N* G/ U# k5 x
set i; C& C+ N! R" z' q" |1 A
( i + 1)
3 c& L/ t  @3 N. b% y% }
]; n, _5 y( A8 {0 R1 \
let credibility-i-j-l 0
9 y9 n8 g, q# }: E& A;;i
评价(jjl的评价). _- Z7 F, D7 S
let j 3) d' @  ?& S& i, C' h& v3 l3 C
let k 4+ c9 D/ o) y) i, G! T6 l- o' U9 s) X2 e
while[j < trade-record-one-len]3 o7 G6 Z3 u! U& d  E% F# Y, w
[( w6 B! z4 _$ `5 u
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
( K# x( ~" B# s* i- }set 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 S% f: H7 N  J3 z" Pset j
& B& Y" ^8 @* `: q0 K- z( j + 1)
# e: A9 F, G( \3 ]- O
]
# l; N  c! u+ S" gset [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 ))
* t& c2 O7 o; O* ^9 n% t4 `2 _
6 H$ ?' K8 p% W/ w  ~0 t- L
# l$ e( c& C; [( c, l2 \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 i4 l1 t7 E; c& f  m9 _;;
及时更新il的评价质量的评价6 j: o% T. l/ O5 j2 B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& }! ?  s4 C( o8 q& rset l (l + 1)) e; j% R( I" m  O0 Y$ x( Z
]3 s' H. b5 c2 E- {) K. m5 |
end& s( I$ f0 ~$ z
8 p) }) L1 l3 Y! k6 l9 P+ `
to update-credibility-list: m" b  P) A6 F( G6 u# }
let i 0
- V7 ~, `1 t7 r6 swhile[i < people]
6 H) j3 m$ w# }. }: N" _[
- Y  c! j- c# T. q% i$ R6 }let j 0
! S+ h* B* o: slet note 0
8 Q; m: I  {, zlet k 02 ?# ]' S" W3 ]& e9 d
;;
计作出过评价的邻居节点的数目
2 l5 h$ H  |. ywhile[j < people]) L  I; b; M  ?4 u) Z& y
[
9 l9 H1 h- @) Q; G4 S1 Gif (item j( [credibility] of turtle (i + 1)) != -1)# w, x4 c& L6 z! i% C4 C6 t7 D- Z
;;
判断是否给本turtle的评价质量做出过评价的节点( M; p# v: p. s: I8 \) w
[set note (note + item j ([credibility]of turtle (i + 1)))& y0 P0 N) |& u/ k/ a% U
;;*(exp (-(people - 2)))/(people - 2))]
0 V( S+ M* T- o$ p( h6 b
set k (k + 1)8 Q: {- S) I1 t! G. m
]5 s) _9 D( u# }% j' I
set j (j + 1)" L& g' T8 P6 Y8 M
]- B& e+ A$ I; h8 I1 p7 s/ W! v
set note (note *(exp (- (1 / k)))/ k)0 |% T( y; V0 e) `
set credibility-list (replace-item i credibility-list note)5 U& k: d, G! Q. r/ U+ R3 R
set i (i + 1); }2 p6 ]: `% V
]- N; l  k& i& x
end
8 q( ]- B2 v( g
" h, k! f. V4 W! a0 Eto update-global-reputation-list
0 |- u; q. H( d( x3 o: l2 Q! Ilet j 0% f2 G1 h2 J" v* ^) c
while[j < people]
( ]( e" s% M% }( w" C' i8 H0 O% }[
; w1 R- v  ~" `0 n/ Q0 p1 Alet new 0
/ `  [3 l* W) C0 ?! D8 W;;
暂存新的一个全局声誉
+ O: X/ t4 S; y* X6 Nlet i 0" X" o8 y9 V" @. o
let sum-money 0' i. L5 [" ~- t0 x$ X
let credibility-money 0' c3 ^" m( Q4 P3 i
while [i < people]/ I3 d9 @. c% Q) U% i( x
[8 S6 ~8 x  m' F0 i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 [+ j: z5 i6 B) m: U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% l, R( V4 U" mset i (i + 1)2 t& E+ Q. I% H! j8 `
]
. A& V. s- }+ m8 ~6 ]let k 00 ~' w6 p+ ]6 k7 }: |2 ~( N* K$ ]
let new1 0  q) K. g3 s, ~9 y6 t4 B7 O. z
while [k < people]
$ n6 q# {' z$ [, L1 L[  ]# u+ U5 J# s5 h
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  o% T; O5 m- }: l; ?9 q* B8 Sset k (k + 1)) U1 n6 T$ q* U4 A4 z- i- ^
]2 H( @% ?* S5 `, \* w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! ~8 D) u! J9 y
set global-reputation-list (replace-item j global-reputation-list new)4 S: I6 @! z+ o: E5 g! {$ C$ e
set j (j + 1)" b* G: u" i( @2 f
]
* L$ `3 _% e5 m& b$ i7 Y2 Tend( D! \' T9 x5 j' k' q7 w

" p0 \' @$ [; b* W$ X9 t! E
4 \5 u: A: B. u& I! g. I* N* k3 M! J, Q
to get-color
# }; {  j& f8 h  v# T: b6 e, r8 g" x# F3 z- a0 W
set color blue
0 j  z3 F6 n0 a  l6 D9 C
end
% u8 U) t  b4 P$ O  p! v" b7 I9 v6 j
to poll-class. I3 {5 U! ?: T8 `- m7 C
end
* R% d2 f) A9 {$ g7 w; `% |$ |; w% d7 t( s4 H6 d
to setup-plot1" ~1 T; K" p" R, T/ \

5 h# w" X" I6 T9 }set-current-plot "Trends-of-Local-reputation"

7 d/ Q; h" ?. Q/ J" d4 y
+ g" v: F" `+ ^$ p% h' I. s2 k. Dset-plot-x-range 0 xmax
# S( o2 _9 B* V2 ]/ h5 R7 f

1 i- I/ D8 U+ f& `) K3 Tset-plot-y-range 0.0 ymax
' j3 K* v$ [, l: c4 ^" N
end
% D5 M, ^5 K# O; R6 N' X" \9 V# j% l3 c/ S1 j' x& t2 K% \4 @
to setup-plot2: G( g5 `3 s) ]. ~3 g+ i; m2 ~% U! _

, S1 _, q7 H1 f' R) Nset-current-plot "Trends-of-global-reputation"

9 d& F# u5 c0 t$ \1 i$ u2 I2 h
) o% J  W% p  |' a, ]4 aset-plot-x-range 0 xmax
0 _  O& I' _: e2 q: h

5 I8 ^$ ~5 w6 ?* }8 f! @set-plot-y-range 0.0 ymax
4 E; }9 \# T# z3 D' z+ H, ^+ E$ F
end8 {! V4 b4 A/ i

; P6 `, e' O/ T6 D$ |* H* y) Uto setup-plot3
6 n, F! F) k7 e* z& ~+ U2 O$ q: I' h+ D, B! v1 |8 Y' l
set-current-plot "Trends-of-credibility"

: b# d* S4 _: t. G8 d. r6 @5 H- M  |5 }/ _; p
set-plot-x-range 0 xmax
1 U7 L! n' m. K* w* q

0 h  t7 X7 g2 D$ C0 Fset-plot-y-range 0.0 ymax

( [: B$ U3 s& Oend
4 i$ b" U. G7 A
% S* d! X* J; i# r$ v* |to do-plots
1 ~/ \# C6 p0 S3 {* r) G2 Yset-current-plot "Trends-of-Local-reputation"6 L' g9 v  T2 E+ q6 Z' W
set-current-plot-pen "Honest service"2 y+ I% v; q* R  v! f
end3 L0 W7 m' J9 J! W! U

3 [$ n2 ?, {. R% Y. L5 ^0 b; U[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.( Z5 E; ^9 U' _' q
  Y  y  y$ s+ U$ E" g0 z9 b  B) E
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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