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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:
% f2 J" r; d: p+ ^: P0 @7 Xto do-business 6 B+ I( _- b: ?* u/ v7 O
rt random 360
+ u/ i+ Q8 K! K fd 1
* j- Q( Q7 X2 L8 [; Q ifelse(other turtles-here != nobody)[
) p5 h4 k# T& o( \- P8 G$ 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./ q& s! Z; o: D; m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! `% s' ~1 d9 F6 L  z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) Q! y6 s: r: D
   set [trade-record-one-len] of self length [trade-record-one] of self
! T+ r! e0 Z8 W& R: ~0 a   set trade-record-current( list (timer) (random money-upper-limit)), X3 K1 \9 Q+ K; R

0 e" d9 e, b! n# ~问题的提示如下:* n; H( ?- V' j+ }* v9 y" o6 z
9 V- r" a" R) }0 N
error while turtle 50 running OF in procedure DO-BUSINESS
: ]9 C' c1 E6 P) b  called by procedure GO
; I; X& U" F1 VOF expected input to be a turtle agentset or turtle but got NOBODY instead.' L  b3 k$ w6 O
(halted running of go)3 v8 S, j7 k. R7 T
5 S- f- f3 D3 X' k7 u9 S
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~~
% n) P' ^1 \3 U/ x" e7 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) m1 k, p+ n4 h# |$ c& j
globals[
4 M( _3 D+ V# }% Y% u+ fxmax
9 a# S+ C: q; n1 }& D5 @0 R- bymax; ^+ J4 w4 w) T, s- o& _3 |
global-reputation-list
" ?4 h# n$ o% Q( W+ ]/ c; ^( T  _3 c2 W0 s
;;
每一个turtle的全局声誉都存在此LIST9 Q$ K6 f5 g0 G# u
credibility-list. V9 i$ w0 w; N3 U2 U5 @
;;
每一个turtle的评价可信度  R4 q! {" ?1 d9 \8 Z/ X
honest-service: S9 B# F; l. O% _: S0 w
unhonest-service
. W# x/ A2 T: ~6 Eoscillation! v  t( t1 n, _
rand-dynamic5 h( L+ U' T6 u+ _; H
]& B) D5 c$ B7 o" H

, G3 r; r7 ]# H9 D& {6 `: a8 n) W# gturtles-own[
" P. F  A. d& |/ X- htrade-record-all% E$ |- s/ ~9 `: f) P1 t
;;a list of lists,
trade-record-one组成( k. q: f, y3 E, ?. k  w" [' \: u
trade-record-one! `: }6 \* }: T8 L; D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 E# b$ M7 H8 D' W/ U% p. ]% U7 U0 m$ I7 w2 Q: \
;;[
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]]% g$ j  C2 k1 `! j
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]2 V  q- A5 }# ^. D  _% \
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 ^' D8 a! z$ k0 e5 dneighbor-total
3 ~! E% v1 r2 m: x3 Q;;
记录该turtle的邻居节点的数目
/ V  d: ~1 c) M8 f. Q6 \* j( Ftrade-time
" o5 C2 C" d1 D8 Y& P;;
当前发生交易的turtle的交易时间
- r$ J- i4 n4 Cappraise-give/ \* W. T! ]  k3 |# b
;;
当前发生交易时给出的评价% e! n9 B( o& x4 L; Y- [$ \
appraise-receive
; v& k, z- m! g; d1 o;;
当前发生交易时收到的评价* r( H2 ^6 {2 |7 g' f
appraise-time' d$ L$ C3 I! u' P
;;
当前发生交易时的评价时间7 k4 m6 f, f% X! o' @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" s3 z. k  u/ _  G- X
trade-times-total
% z2 q# _1 T) @% \2 c+ [$ g) D+ S9 c;;
与当前turtle的交易总次数. L  P/ w  q1 ]7 O  @2 Z
trade-money-total
. p; Q+ X' s" H$ u, d3 Q2 ~* x7 M" j! H;;
与当前turtle的交易总金额0 @9 p5 n$ t# v+ @! h
local-reputation8 ^2 M4 }, r5 l( D$ ]
global-reputation& z% \6 q/ G& ~& c2 h- C
credibility
$ `" Y+ ]8 o/ ]5 d4 x;;
评价可信度,每次交易后都需要更新2 i8 S. B- |8 [
credibility-all
# W+ Y1 i: @7 _% y;;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
; i& V' f: c3 X# B% o3 R% r# W1 I1 E' o+ J; ]
;;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
  Z: @( V" e8 V6 \4 ^; h- i1 Dcredibility-one
$ ]. f. A' O7 u; m" X- 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; x; S" h0 g% a' q7 w* S
global-proportion
, n$ D4 E3 Q  R. s8 I3 h3 R! kcustomer
9 e5 i! g8 X2 D# @/ J9 Rcustomer-no
, N7 g4 s, h" K: v' }. v7 ~trust-ok- {+ W/ z  I/ t0 ]# [: G
trade-record-one-len;;trade-record-one的长度
9 z+ P3 G0 @' J  g& y! E]
/ G. [3 |& ~2 d9 L& ~1 V8 O* |' R* L* v2 g  J+ P
;;setup procedure- p* K8 _9 P- c, w' T1 `/ ]

1 \6 R1 E/ r. o# Eto setup, @6 G, J9 B2 f( C1 }' q- s( U  X
- L2 x* B  W1 D/ v& M" F6 Z
ca

9 F* I/ M- m% N2 H0 ]6 O4 [+ m% T; N1 a+ m# U9 {3 \2 t
initialize-settings

6 U2 ~, T" M8 M# q8 J" @, e- Y5 Q  o  A2 \) v7 d
crt people [setup-turtles]

$ a0 O4 w9 o9 g* J0 }8 c( t0 Z% P: g4 L9 R2 |
reset-timer

. P( s" j9 e/ w2 Y: Q
) I: R+ F: Z% n& y* \. apoll-class

  V  P) P/ j: r
- e8 g& l! ]0 d5 z* |setup-plots
% t1 V* O. A& i! V

) C  T. f+ K* @% r" ?do-plots
2 p2 N6 A) D* L8 O8 z5 O& U
end
- ~( H& w5 \" t0 t
# p* d6 X/ j! eto initialize-settings8 `: T- H8 l1 N( D" T
  F! d; P3 Q# q* E+ ]) @
set global-reputation-list []

1 {# s2 i! s" O8 C& G/ V* S! Q+ S' ^7 ~5 Y
set credibility-list n-values people [0.5]

* G1 `4 c! v$ S- G
9 C0 G9 X" a) r! Xset honest-service 0

) L9 u' t4 i7 |: v
( s9 a. R1 u# M* Xset unhonest-service 0

  @& h- `4 Y+ Z7 c/ e1 ~( U  T! |$ n" S4 d' I
set oscillation 0

+ @. R8 d' ]( [3 K
. R/ M  H- i" Z$ n( x1 T( `4 E" t2 Cset rand-dynamic 0
& t1 s. c  N, X6 x
end
  W# _7 w% F' U% Y0 x- {2 \8 G: O" ~# A3 N5 j; G! X9 @) g7 w* S" d
to setup-turtles 0 b  n6 Y, D, \+ l
set shape "person"4 |/ ]0 c) R0 G# a- G
setxy random-xcor random-ycor7 i" B4 h: |  G5 Z& V1 j& h0 C
set trade-record-one []
2 @. q4 f  R7 _# k% R2 O$ V# _( I0 ]0 Y

6 F0 x( K- R$ A8 Zset trade-record-all n-values people [(list (? + 1) 0 0)] ' t& j$ N3 a: y' d

( `( w( X9 B7 t1 Y2 Sset trade-record-current []
/ F% T. |( L' _" I' Gset credibility-receive []8 F/ c( T4 B2 b1 J. a
set local-reputation 0.54 v! F, x3 Y( k
set neighbor-total 0# x# _5 G0 {2 K2 ?4 _0 X
set trade-times-total 0
+ u. u) x3 ]9 b4 I4 E3 t3 hset trade-money-total 0
9 Z" G  t4 o% w* Uset customer nobody: Y7 X& N) Y' I  u( Y. N7 _% p
set credibility-all n-values people [creat-credibility]
  h4 O/ j& @2 q+ ~& I7 Wset credibility n-values people [-1]
+ u7 O7 S2 ~( N! G! pget-color
4 J& Q: X5 T  ?7 \7 Z

! }. N  E1 N0 h4 a  w( D7 x$ xend: {9 A, r+ y  F2 P4 p5 _4 p
$ X* C# K! z- P# j7 p- y7 ]
to-report creat-credibility
! s& F& O5 t; ]report n-values people [0.5]
9 U& n6 V, V; L( dend) M3 h3 q$ I! _- |
0 B) N% \: j& k- E, H6 U
to setup-plots
, I; M% o0 P' i8 r# i& x6 W
# a6 Y( ]6 O3 x7 z3 a1 n  yset xmax 30

# \% Y: i2 @5 I& K0 q; o& d  b$ ^) y: S6 S
set ymax 1.0

8 P" y, X/ q$ O# T+ V2 D2 d9 {. f8 R4 B3 U  [" |. X, W
clear-all-plots
! f. s( O9 h' i! P" j5 i. H' h- Q  ^+ b
5 E$ `+ H6 R! {5 p8 Q3 Y: Y* D9 D
setup-plot1
# X1 s3 h4 t8 M# F4 e+ ~

7 p1 N" t* G( O8 |# d3 q1 [setup-plot2

8 J* k  r0 W! _" Z6 e$ ?
9 w6 }  _3 T" B9 X( a0 X3 esetup-plot3

! {. {" I  s4 X; F6 n4 k9 a6 `end
( D9 A& Y' p: m/ W6 ]1 T
% d$ C6 A2 P; ~;;run time procedures
5 F* e2 ?5 `* P- N4 t
% [- E& x8 L2 Q! a$ oto go+ B/ k1 ~% k8 k$ k! t0 o
' r9 h8 |; L. N/ z
ask turtles [do-business]

) v0 i; X; e1 {( C% U' S1 i- T# Lend
: |" u# N! S6 F; u" `7 V- ^
3 a" h0 N" w8 Jto do-business + z& x. V: S8 f
& b: j( ^$ X0 T* H
& [' T6 Y/ i$ N( h  I- Y
rt random 360
) h. A! ?; K1 s7 H. g" G% T; q; W
4 i: J! H  D2 W  s
fd 1
: ~5 V/ C- U: @6 m" [8 l
% F9 P3 g8 R( l( ?1 p. z9 {4 S
ifelse(other turtles-here != nobody)[

( F: y! l% s, Z* Q: f- F7 K( \* |2 |: y7 e0 ?; M1 R0 S3 z! p
set customer one-of other turtles-here

  z: x* H' }, B6 G# @0 P6 E$ l* d% y) V( {; n3 X* y+ x
;; set [customer] of customer myself
& s/ g, ^6 _: {
6 ?  C$ e- c6 `6 ~) {6 D% u2 Y2 t
set [trade-record-one] of self item (([who] of customer) - 1)
9 |. ^. }. ]$ E$ `[trade-record-all]of self& J+ Q5 o1 `8 \  ?+ i; H% {  w% ~6 T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 n+ n  A2 h2 K  p

& f/ P2 N5 k* |, p) j) T. Xset [trade-record-one] of customer item (([who] of self) - 1)
' j, P+ ~, J5 V- [% E# ^5 J[trade-record-all]of customer

& H  z+ a5 [- {( g: g' q
$ p: o2 E6 v3 m# Jset [trade-record-one-len] of self length [trade-record-one] of self

. y) n" y0 ^4 U# d4 W9 d3 f* y; P( N$ k
set trade-record-current( list (timer) (random money-upper-limit))

) a& Y+ e; z. ~2 n/ ~% }5 }7 l1 i/ y+ W5 |- n
ask self [do-trust]- k2 R8 n) h& a! h8 [! g1 `8 m
;;
先求ij的信任度
5 r% s7 K% F9 ]# [% d9 a. b; _
3 m, W. J- q' ^. j  y+ eif ([trust-ok] of self)
, L7 V6 F3 B2 P;;
根据ij的信任度来决定是否与j进行交易[
+ r, u& R5 s/ q- e0 e+ w; aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 @, l- \6 u! A* [8 v. q
7 B  I6 }6 q) C  Z: ~4 W8 V[

. D7 I8 R" X6 v; v9 f' \' Z! g' M/ D6 {
do-trade
! Z! B) F7 P; o( ?, d
7 Y- K: ^# V- ]: `5 l- p: c4 u4 X. C
update-credibility-ijl
5 j9 Q  M4 l  n7 R# M: s+ v
& _+ C# g* y+ O& g& I# g
update-credibility-list* r* \! |* C- m& u& {/ o7 y9 T

. z# k& }& b: F, \4 B: g
) F* @% ^# l3 {& w. m- [! fupdate-global-reputation-list

% m3 h: W( I' Y3 `. O& ]7 W8 F7 X  f7 ~, @6 I
poll-class

9 A3 u" `5 a$ m
1 y3 n! J: n: f1 S, M8 Hget-color
( n" A) b$ g2 z

; t4 T+ |4 J: ]8 D]]$ P! v: T5 Y" ], ]. v$ l, D) n
0 S3 U8 D+ [; R: F% \1 r+ ]
;;
如果所得的信任度满足条件,则进行交易
6 Z! a/ S/ f( E) R* H/ q& x8 ~7 @. S4 \3 e$ b( E! ?& L0 q; K
[
0 O5 p( R$ H# w( S/ F( c' T
' ^+ K4 q8 u* J6 b6 c0 v
rt random 360
2 a5 f$ R7 ^" c: y& }4 I
6 _! c, X' t+ r6 n7 ?
fd 1

1 ^6 n$ |( B- m9 T% i# z3 @$ Y$ Q( w0 X, M" k
]
; F6 _8 c" v2 P  P

* u+ u, s8 M2 i- o# T2 rend
9 b- x! W5 |5 @+ J" g
! b7 o1 G- _; f5 g
to do-trust
; M! l2 K0 U5 l% x. C9 _set trust-ok False7 J3 }. k- g! A9 m' B
( T3 r* Q+ o8 A/ U2 _" w. ~
$ v: y% C2 L" L7 K; O! d
let max-trade-times 0
" N: @5 i  ]- S& a/ L  y  qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( E. |* m3 \. j, p8 A9 Zlet max-trade-money 0+ Z+ E- S. B5 m$ r5 R' P$ A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ X& q- M. H9 t; l! J. i* {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# q7 Y8 o" T' x/ N, r
8 ^2 m0 e0 t4 J, @  k
( B5 N3 |. O" Q- X4 l' i6 e+ @
get-global-proportion6 ~7 N" q$ O- G, c4 }3 [
let trust-value; ^7 u  S, e0 v, f6 C) B+ O6 X: 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)

  ~2 ^; X4 O0 r" ^+ Aif(trust-value > trade-trust-value)
* _) F9 Y$ J2 E- y5 ^[set trust-ok true], g, `: X6 f6 h5 ?& o$ O, ^: B3 J  \! @: {
end
0 U) I  I. u" N/ U: G; t& F
7 C5 Q% n; `+ N- u; tto get-global-proportion$ D* ~, q+ K$ g" s5 K; T" H+ h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ w5 v" n6 k2 K: S: |; @! u9 N
[set global-proportion 0]
" B, k, S  V2 J' [+ W% W3 W[let i 0
  `( T+ U- P  m- h, u5 {let sum-money 0
0 f& u* |# R# q& t' T# x6 M5 Swhile[ i < people]
0 ^# G5 o7 _4 ~% C[
2 k, S' g: ]7 g1 eif( length (item i! k8 R+ ^  K+ j
[trade-record-all] of customer) > 3 )

( X7 t& m! i: p+ N0 m, D! i[
1 K- v2 ]. s" c; O/ ~8 eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ u& l! A: |, Q+ @0 ^
]
, Q: X5 T4 X. j" b9 V" [& O]
. a4 h' X  p7 elet j 0
3 w6 p0 J( ]" Q$ P0 d0 Clet note 0
/ S* B7 o+ `; W' }while[ j < people]
" o+ B/ U2 l+ K' y[
, j, n3 T" A. \1 l" Rif( length (item i
+ I8 ~/ i2 Q7 j$ R1 E6 @2 W0 L/ O[trade-record-all] of customer) > 3 )

  ]1 H6 B! W4 g8 b. b" P[
5 a$ W5 w3 z% D! {! R& I3 Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! k/ P4 K& Z; C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 z) g( |7 `5 }/ a6 }# m" [& l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 z+ q4 r( j7 k, x" ]! d" k! t
]
! A+ q0 |5 M" J8 L]
2 X3 ^/ ]2 j$ ^9 r# G3 Rset global-proportion note+ k' H( w0 \/ x! Q/ a! ^* A( ?4 b
]
! |: s6 H( y) i2 Z' G4 R( z! s! tend
0 Q- i2 B7 T  ]! ]. X8 o! I) M
3 G  r; q4 U$ l# a/ i) k( wto do-trade
5 m+ }* `" C/ u% d' l+ s; Q;;
这个过程实际上是给双方作出评价的过程$ Y- h! K2 ^/ X! T9 \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 ~. o# j3 e  eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" }# A" Q3 u+ k- Lset trade-record-current lput(timer) trade-record-current
& h  C* d" Q% T# H7 Y;;
评价时间
( M! ~4 K! Y1 l) f' ]6 J& R  Nask myself [
7 t( o# Q% i+ R5 B& p% D7 Eupdate-local-reputation
5 |9 a$ K( l6 F, U+ ^/ @+ J- H: Tset trade-record-current lput([local-reputation] of myself) trade-record-current6 ~. |6 ?. u- x0 Z
]
2 w4 s: l0 {. i9 eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 g# H; ?  }& ?) W, f. o9 R0 Z
;;
将此次交易的记录加入到trade-record-one
5 n) d" T* w4 N8 S  k; Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- N# N( ~6 ^/ \9 Y* t# Z4 z
let note (item 2 trade-record-current )
- @! M# U- k( }' z4 mset trade-record-current( Z4 `5 z; C  G4 G6 Y
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 ~& R( M' v. ?" S- Q) w$ J  eset trade-record-current
+ F) p, D- M' \7 @$ f8 @(replace-item 3 trade-record-current note)
4 u+ M* u9 @' c7 G  E: ?
$ T2 t$ }8 q7 r3 A4 |3 _

; b3 i6 R. K& v/ h3 Aask customer [
+ [$ n  ~* n- eupdate-local-reputation# F, f4 G; {; C+ \# I
set trade-record-current0 d7 R8 ]8 N8 O5 d6 \8 J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. Y+ P7 b9 u/ N4 z* {  @: i# f: C
]
, K: ^7 a$ c5 b) a% `+ Z
6 z7 D" M" |2 p0 z9 O

3 v5 `" K9 }- G. \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! o4 |4 F. t. @
' [! o7 {* i- P( ^1 h2 ]7 }% T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* O" Z/ g$ p! J! V: M. Z;;
将此次交易的记录加入到customertrade-record-all. _- M4 C; ?% T5 S& U' L0 p6 v
end
( W/ a# q3 B0 P' k( @8 p" v4 U( }! a
to update-local-reputation( e, @( e! E" k+ V. h
set [trade-record-one-len] of myself length [trade-record-one] of myself
! z: D4 a3 H3 G7 q! G7 Y' u3 r" k& c" g8 ]: ~3 Y, ?
) F" j" L! [, {" y$ s) Y
;;if [trade-record-one-len] of myself > 3

' _) ^5 K0 r; E: Pupdate-neighbor-total. \' t' a' L8 w. y- W9 y( I3 _5 |
;;
更新邻居节点的数目,在此进行- [; @+ z; E, u9 [! r- b& V
let i 3% T  b! m8 h/ S7 `
let sum-time 0
+ b% K5 J, i' ?  z2 x+ g7 f/ pwhile[i < [trade-record-one-len] of myself]8 O8 B0 Q4 J- s7 o) A/ P/ J5 `
[
: }! g8 p. C7 u! Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, W9 ]6 a. C' sset i
; w) j* z. t  M2 D# E( i + 1)

* A) B. ]& b, p8 g9 A+ w- Z6 A]. C+ p+ ^0 U& E
let j 3% G) a9 ~/ z+ q; w, D- V* N
let sum-money 06 T6 v8 X/ i8 |; s  ]) c7 X
while[j < [trade-record-one-len] of myself]
0 o. t+ [! R5 o( C[
) c) _% b: O- \! oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)/ x8 o9 K# A, R5 O$ V" G3 j$ c
set j3 I, L( ~/ W" ^3 k/ v
( j + 1)

9 G' N9 ]3 A  p6 n5 T7 ~7 X- M0 c]
8 X- y  b5 ?/ |1 U, Slet k 3
: }2 ]$ x! j& y2 Xlet power 0
. |0 G2 x% `6 }& Qlet local 0* @( l; A( |0 c( Y: ]; L, v5 C
while [k <[trade-record-one-len] of myself]
: S$ X2 p: E9 C; d2 J. K$ R7 I[
6 V: l5 j1 G; P, S, Mset 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)
0 R, j2 D; T& o2 f/ Y; H% ]/ ~set k (k + 1)
) f7 j) h4 e) |1 k' q8 h]
5 v! Y2 F6 V" T! {' Rset [local-reputation] of myself (local)
* y& t( n; O7 A0 u2 I. B; Vend% p+ e% |1 e9 G
, o- V. Z) \) H$ T4 V/ `- R
to update-neighbor-total( I- b: J9 o: u8 g
" u; z) s0 L5 |' c, g% Y" ]9 m
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. y$ D9 k. ?$ n6 P% M" c0 ?
$ k0 A) P* [* C! m. ~
$ B- @# ?/ V8 Z7 z7 F
end
% h2 f2 N; s! a  V! k% O& [% m- Y) k! c1 O8 ~/ A& o
to update-credibility-ijl
$ z7 A+ _8 n: B$ ^, s/ j) j# [) [9 ?. p5 j
;;
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。
- }2 `: G! _% M# Olet l 0) n1 i1 b( _5 q2 x
while[ l < people ]5 h: X  Y* m4 k/ Y5 {
;;
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; y- u0 h3 ^5 V5 H' H
[; s% x9 Y7 ]& k! A6 _& z! F: C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* w8 b  q$ n4 f' @
if (trade-record-one-j-l-len > 3)
) L8 m$ h- S$ |5 v' V8 T4 ~" 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
0 t$ Y9 Z- Z: g, x* X* Xlet i 30 h/ |0 `0 B" }' S1 @% g& I
let sum-time 0. j0 e* K* I$ s8 ]& _/ L
while[i < trade-record-one-len]1 S2 z! g( P* l, h
[. @9 V6 Z8 o9 K; Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 Y2 e1 f' T% o# Y( H7 J1 I* mset i
  A! W0 g" L0 U' p( i + 1)

% [) ?; x' D' g  v7 z; [3 G% l; A  Y]
5 B. J  E: B- A0 N" ~let credibility-i-j-l 0
1 H# T) Z% S0 Y8 R2 @;;i
评价(jjl的评价)1 a7 G3 D- x7 ?9 M" `$ a" S$ {
let j 3- Z* r/ h4 u" b* K3 F
let k 4$ p. a' W. D8 T, Y
while[j < trade-record-one-len]
6 k' w( @' O% h' C" _' M! H[& g9 I* Q$ q1 Y$ j; k: V- N7 t5 n
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' ?/ E0 r& j' B+ {: _! f- 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)
# E4 Q. f- L; Z2 z% u: _% F" zset j7 U6 P: t8 g& C; _* p! c
( j + 1)
- i  N( }2 ~4 Z  x, v
]
2 ?* g: V  Y) T1 Q$ X3 I& W" aset [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 ))
" k6 P) E( f3 j
( a7 H6 `7 Q" w) ~( C  c
" B* _2 {# F6 o* P( l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); A& j' a7 e! i9 L; x
;;
及时更新il的评价质量的评价
$ q& ?: M3 [# `. E/ bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 o  p8 [2 W' zset l (l + 1)
: C2 [/ j- Q4 ^]* e4 a& J) f; \9 B
end2 v6 h4 p, J) ]6 p

: E. V/ m. ?$ `to update-credibility-list
; ^. f5 t& z! q! S# i; X4 i0 tlet i 0
- I2 ?4 h! @" Y& o$ F/ Cwhile[i < people]6 j: f, k1 o; F
[2 C$ G- F8 k8 Y" A
let j 0
4 m, ^9 o9 i1 }( F2 J% V! J& zlet note 0
/ I1 P& O( ~8 h5 Q, flet k 0* d+ s# z1 ]' T6 L1 E) F8 |0 l
;;
计作出过评价的邻居节点的数目( h# \3 @# p/ C# ]1 }  O! g7 H# q
while[j < people]# V0 Y- p; i4 f/ E0 R
[
4 t, E6 T) ]4 W9 I. w2 ?if (item j( [credibility] of turtle (i + 1)) != -1)
% C" \( i* d0 \. K% i; ?4 G- v6 b, n;;
判断是否给本turtle的评价质量做出过评价的节点4 }' M7 h  _4 R, ?, a* u
[set note (note + item j ([credibility]of turtle (i + 1)))
) ?0 v1 O! T4 }4 b1 [;;*(exp (-(people - 2)))/(people - 2))]
0 a- {2 i; Q/ t7 Q7 V1 t
set k (k + 1)
) c; G0 M' i" }4 M- H! t3 \$ O: n- d0 h9 P]& a% }( l$ t8 L8 E+ G6 H
set j (j + 1)( M  G% ~6 Y# L: X6 Q# Q: W8 N/ j! {
]% ~) t: @( t6 F" G3 X" H- J
set note (note *(exp (- (1 / k)))/ k)+ i. B* S  W7 x+ d, ~
set credibility-list (replace-item i credibility-list note)" }3 q, y4 X# }6 u0 O( S
set i (i + 1)
3 L" s4 p- L, d5 U6 I]0 c! _/ {5 K$ N# a& a' y
end" d$ v4 [  A1 x# _
, z( o9 R  M5 V8 \6 K% M$ T& @
to update-global-reputation-list0 u7 I+ @: {, O$ ]3 @* k
let j 00 P7 p7 R. B0 @0 L  ^2 N
while[j < people]
2 r, J7 c7 j; K  N: ~  y[
4 T  R/ c! E* F' T3 }4 U4 slet new 0
+ W. u1 O6 d! t* A7 j9 }' ^& ^;;
暂存新的一个全局声誉1 A" Q( B. _2 r4 O" Q4 T3 O- N4 Z
let i 0
: w1 E3 K& N! flet sum-money 0
5 O& z8 ~! i, O; j/ G7 v+ ulet credibility-money 0; e) J. u, S/ L& C
while [i < people]
# J7 `* `6 j, @2 H% ~% B7 L5 o[
3 D: k5 O' a( k* K4 L2 |1 o8 mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 X8 u( A& ~- O$ Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; G. P1 _5 h% }3 d7 O& a; O' pset i (i + 1)
) y6 @6 W6 }0 f$ T9 n5 `* `& s( e2 `]  e  ^7 h3 t! O1 |2 K* Z; q% L8 \
let k 0
- O2 b5 j  g7 j% X+ ]' Q5 s" m% _let new1 02 ~2 T  ?+ r* F. k* j
while [k < people]* ~: e( Y8 l; ?9 t$ L
[6 N; w+ O+ ^: ~/ E+ k% T  D" e
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)9 I  Q7 W! y; ?( M' X1 Q1 j5 T" y
set k (k + 1)
1 \. T8 n5 S6 j7 V- Z]
& M$ c. b( Y6 w( Uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- ^% ?* z$ F8 `: ~+ u4 n5 o7 Bset global-reputation-list (replace-item j global-reputation-list new)' V! V+ u4 R& O! w  @6 x
set j (j + 1)
( @& ^! _$ F+ u' e7 ]0 \6 u$ N5 J* a/ q]& N% }- u& e+ |" B
end3 G0 K+ O/ N9 d7 N/ r, l6 n3 L
& o7 A0 `8 B6 h
- Q4 G+ F8 A0 T! p. q
2 o( d2 P# [# q9 [8 e
to get-color2 y3 z5 q! d& R! p* k, R' \& m" W* B

) g' X1 g- p: I+ }$ fset color blue

4 Q1 g4 u" ?& fend8 s+ I/ }/ ^0 O5 J1 r* W/ d* t2 I5 ^

: s, G/ _$ {' Wto poll-class
5 z7 ?! ~  J' e0 E" j' W3 p% Zend) d8 i0 V2 W) r3 _

: e! ?3 D# `$ l: wto setup-plot1- R; W$ L2 ^, }' a7 n. U5 l2 \) f$ ?' u

- R, Y2 d  S- C, eset-current-plot "Trends-of-Local-reputation"
" h1 s% a/ x/ s6 J' _6 i! l+ t" X

! a5 x% z& a! y, }( xset-plot-x-range 0 xmax
$ p" `. b& X- n
. k5 W  B. r$ p( d# W( C9 c
set-plot-y-range 0.0 ymax

2 C  \% b# U6 ~9 o+ O1 E: Qend
+ [* [/ m! T, Y* j5 Q) Y
+ f3 a8 \/ s8 l) }# Cto setup-plot2! q- l" l( ]; |4 T$ j

/ v; H8 e, D7 cset-current-plot "Trends-of-global-reputation"
- Y) ?8 P4 e# G% g" ~

; z! O- v. M; N' [6 P4 pset-plot-x-range 0 xmax
9 B% n9 t8 q; f

' Y) Q4 o  R8 w1 V/ vset-plot-y-range 0.0 ymax
1 x" t" L8 l" G3 H% T
end. q$ v5 P+ z" V: r& b3 ~: G/ [

7 o! _( F' @9 S* I4 X6 H! ~to setup-plot3
! q5 [0 i& f% X: x# P, N4 K+ v7 G2 X; V$ |; g2 R
set-current-plot "Trends-of-credibility"

) d5 k1 X; v8 v3 t9 a! L  c
' w$ N1 U* {) N1 Tset-plot-x-range 0 xmax

9 {* f" ^$ f3 x" F3 q" G
7 i# e2 K& B+ Y4 B0 q5 E; Wset-plot-y-range 0.0 ymax
* U4 k% `, b0 g; S2 ~" U
end
6 z" |( _" [/ |. s3 e$ Q# b8 z+ |: ?" F
7 Z  m% M9 f0 [8 l+ n" `2 Nto do-plots
- \" m+ F. _( uset-current-plot "Trends-of-Local-reputation"
7 l2 j* d3 z8 H4 Q1 kset-current-plot-pen "Honest service", q: Z  u. D7 S# s4 ]
end$ Q* Z% U8 z& z& G

6 r. n) O# I# x2 A: r[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.! r5 z3 z9 g( ^4 O6 d! ?0 J
! O+ d) ~9 w- ]( u
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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