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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:
/ i) W$ ?3 w2 t5 Y2 C2 Fto do-business
- Z3 U! u4 k% D8 } rt random 3605 {! g" S6 w. X' u+ b0 t- x
fd 14 h) v" V" p0 a- }
ifelse(other turtles-here != nobody)[
5 l# @/ G% P  O0 R   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.9 x6 @6 b2 _) t3 q% h' z9 f
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& A+ p3 ?% Y- R; a: w1 ?* J* q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  o1 y/ d" R: W, \( t1 K6 q5 a   set [trade-record-one-len] of self length [trade-record-one] of self
1 Y1 B* h" y  \7 A! P   set trade-record-current( list (timer) (random money-upper-limit))- d0 S4 r6 ]: r

. Y& `" |: z; m# _问题的提示如下:+ A) W0 _6 r( D/ Z: i7 D0 k) e! [
% ^$ ]% h0 v$ B1 T% f9 B0 }
error while turtle 50 running OF in procedure DO-BUSINESS
; G% ^8 Y4 q. J! D  called by procedure GO
; Y6 z/ L0 c0 q" R$ y  H: wOF expected input to be a turtle agentset or turtle but got NOBODY instead.
- h9 [3 @% d0 A( J
(halted running of go)1 ^0 W7 F* E% I/ n( I
1 N8 X- H3 R' N
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~~
* w4 H" [/ L" V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5 s+ o2 k) T3 E" [
globals[
" a- N# c" x" B$ J. Yxmax; R! u3 c3 c6 j7 ~- p
ymax- B" A, l) ~2 m3 O) j* I
global-reputation-list
& ~( F% A6 P  M4 w( k) D6 T! `
4 s: r/ r- ]( Z1 c;;
每一个turtle的全局声誉都存在此LIST
( r& C8 M% G- c4 l. o/ u' A6 ^credibility-list
+ F1 x5 A) y: k0 \+ h9 V* N;;
每一个turtle的评价可信度
& T7 @5 p0 o& [/ k" ]( yhonest-service
: G7 Q" S, Z, s! W2 l: t2 Iunhonest-service( y! |) i, V" F) t$ M: T: c/ k' f
oscillation/ i! V* Y9 }9 n2 u, d, z; I1 P
rand-dynamic7 n) U6 g$ `5 I6 a, K
]* }  F9 t  H) Z( r# g

4 q: c. J+ I+ q5 h" s, Gturtles-own[
7 I. O4 c' @, ?9 d( Ktrade-record-all3 f$ t' ]' x  Z, v  `0 |
;;a list of lists,
trade-record-one组成+ r2 V5 a) g/ }
trade-record-one& [& R( L0 n2 o% d* r- F4 d+ Q
;;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 Q: w1 r0 E9 g# X4 ~

  e; z$ L+ g2 s0 T1 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]]
! \) h! I3 c0 A  f2 vtrade-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], K$ V& K# i8 C8 n0 h+ V0 t5 F9 y. B& C
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
% r; }& m. J0 k/ [: w& Mneighbor-total
/ v( Y, v6 s; N. A% F;;
记录该turtle的邻居节点的数目7 E9 E2 V3 ~8 `) c1 K
trade-time
8 s8 ]7 l7 h3 q  c  b;;
当前发生交易的turtle的交易时间; U- o* B7 O! v' I( o7 M, D
appraise-give* p2 m/ u5 ], J! N; e
;;
当前发生交易时给出的评价
% ~: {7 R  n5 @: J1 \# B) |appraise-receive2 C+ I& k& u8 E7 q, G9 Q6 _2 V
;;
当前发生交易时收到的评价
) @6 P3 A! [2 p7 l8 ?appraise-time
; d7 t; d$ Q) g. X8 c# x# m' a;;
当前发生交易时的评价时间( S) l% a$ q7 ^: B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 M+ C- M  Y0 E5 ctrade-times-total
. r8 k& S/ y0 i1 i" \8 C6 ^  V;;
与当前turtle的交易总次数2 y/ G& M, z: w# @
trade-money-total
, z2 [' m: k( P;;
与当前turtle的交易总金额) j- n% p6 z$ [8 c1 x- t" I  S
local-reputation0 R' @& P, E, o5 p, S; t8 [! }
global-reputation
' Z) l4 E0 \- N: A% l! Tcredibility
2 w( y& U' Y$ w;;
评价可信度,每次交易后都需要更新5 F' C% k( u( M! I, P/ l% o8 k
credibility-all
! o" G8 W/ H# H;;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
' m: N' _) |* _. h; V0 M! V$ ~- \
;;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
# r) @5 m! h/ C5 b$ Wcredibility-one
5 Q/ o% b; m# Q;;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people3 v, `. r  O5 q2 {( x' F0 [
global-proportion
8 i# f0 w& Q# K; }3 [9 F" fcustomer. D3 e  d: y# {8 q4 F$ j
customer-no
' F- `, {9 W1 H. G! I& qtrust-ok" ?- |& z( }2 f4 W5 i* o
trade-record-one-len;;trade-record-one的长度8 O3 a0 r3 k8 _
]
8 z+ {* }- C) i+ u5 k
- b0 j: O1 K% C;;setup procedure: A. B' ?3 x4 D  d# H
) p8 d( a; R! `- l' P7 J" U8 H5 J/ C
to setup. L) X% }% N/ ~) d) ?7 k
/ i9 b# S. b, t) X+ F' N, i/ I' n  e
ca
7 X& O2 q  C5 t5 V/ h

; D7 N4 n4 }6 N6 ?initialize-settings
) I, ~& p8 B& k2 ]6 A
4 @/ r2 o) s/ t' s
crt people [setup-turtles]

: S" o$ M2 ~0 F" |7 D. t" T8 Y4 O# a4 @( f% m& G4 D5 b- r
reset-timer
/ z3 Q; ]' B. d$ D* V

; b) {  G) ~3 k+ {- }6 bpoll-class
' ~, n4 S( y4 T" d! [
+ l+ i7 g7 N: ]- {! U" v# y
setup-plots

) `" F0 n! g/ ]
# I) b$ R, s6 {# H- kdo-plots
! E8 g0 q4 T- |, [; K7 {0 q
end
) ~5 O; w, I% z6 i2 o
6 R* w* A" B% d4 Bto initialize-settings: C) P/ e  l: i; F% d4 I
  W% Z9 L* i" D$ _
set global-reputation-list []

! n( a, i2 F( c5 \8 E, A0 h
; q7 o% k# H" l: Pset credibility-list n-values people [0.5]

. b& N7 U6 ~; v8 C- E
9 y5 g2 t' W5 ?9 Q7 W8 B! s4 n$ b' Iset honest-service 0

' l% d2 S7 D& I7 H  N  S% b9 a( r6 Z8 Q3 N
set unhonest-service 0

/ p) b# J+ m% e( W. i+ O
3 R. Q  g8 H+ E$ g/ ]0 _  A, Jset oscillation 0
" @& T, a4 ?  E+ A

, l- c* i2 I+ rset rand-dynamic 0

, q% S5 S8 ?$ C' iend
6 ~4 W# h3 `1 v# H$ b& \8 q
  B7 T. x" Q  o; K7 ato setup-turtles
7 ?0 Z' H4 W, w# I* P. iset shape "person"4 D/ r; ]/ e  q; e
setxy random-xcor random-ycor
% X( c4 u3 K0 y3 h6 N7 s6 _4 Uset trade-record-one []
. J% w( b* Q. Q) m  s  Q- Q

+ j8 Z/ w( G; \% j" Y$ ]set trade-record-all n-values people [(list (? + 1) 0 0)]
' E: u$ u) A6 |4 u# L+ m- f

2 E/ J% J# t' R% N8 s$ fset trade-record-current []. p, x' q, q  ^5 G! y9 p7 T
set credibility-receive []
1 Q/ e) S# n% _! u; v0 o; e# H) _& wset local-reputation 0.5
$ B5 a# |& z% w. {+ U# Z& mset neighbor-total 0: z; y! ?& o( y( s1 ]
set trade-times-total 0
3 {3 X# O$ r9 [2 Z$ D) u7 S. ?/ Jset trade-money-total 0
' F3 J! Y: P' i2 Z; H' l: T! \4 wset customer nobody0 q0 k5 g* i7 D, k' v3 h; I+ q1 p
set credibility-all n-values people [creat-credibility]3 ]/ M  e. b& Y/ \: i8 f  T, k
set credibility n-values people [-1]3 t8 T* g5 n8 D' R% ^
get-color
) G3 T  w4 J# E; ?9 p
3 O. E; q" h; h# t
end
3 s/ Z$ A& I& v9 c% V4 W' I* o- X( M6 o0 e* n6 Y4 W3 a8 |  n" m& x7 b
to-report creat-credibility4 ]* T9 @; m: h. n
report n-values people [0.5]
) `' e3 Z1 o4 q& Y7 v' Jend
! r; I; D- a3 S) {6 i/ \
* K1 ?$ b1 h/ X, {: Yto setup-plots
5 o9 ?. o7 X' c) X% V- O. P" Q% n  C! R/ \8 k  {8 _; k
set xmax 30
9 N7 s3 N/ Z  y

0 |3 X, j0 x3 b$ C$ m6 rset ymax 1.0

$ A* L$ |/ w# R& l+ y( W4 I8 s
4 X" @9 m) u; x$ Z1 R4 zclear-all-plots
+ ?* |  A. r/ j9 X5 G

7 n3 }# S/ f$ i; u8 O- ksetup-plot1

9 J0 E. K5 q; @. q3 i" @3 l! O4 f$ c4 ~7 Z
setup-plot2

  P' M0 _) G/ ?7 O  H! C/ h8 C0 d: X( d4 K/ V( [6 g8 {8 d7 i
setup-plot3

. D8 P7 a; L! l! G1 \% Lend9 s5 M# G) w# h, h# ]- h" y* f
9 q; Z4 G* L" V* e3 R
;;run time procedures( M/ g- Q  S; Z' B* D

* ]$ |' M, A" Nto go$ d; {0 ^% ^8 w  p8 C& p

6 _, s! {$ i* c, oask turtles [do-business]
7 e  n) A6 z9 i5 c, y& `* w% E
end
& f  d& S+ m% `7 Q; X/ g) a7 s$ b3 R
to do-business
9 i( p. Y& k' b2 \3 [$ t$ `
% ^1 m5 m5 W5 K% x- b

4 [2 w. [& M" m2 o6 E5 Yrt random 360

4 F5 F& Z) ?9 W8 L5 ~& l8 s; V1 X2 r% F/ B
fd 1

  B5 K5 ^/ D9 }2 Y) O  k
. f* F1 [5 A! b0 x# ]2 J4 L) w; D" ~# Gifelse(other turtles-here != nobody)[
. _, `+ r/ w3 ]* n) B4 @
) e( o, s6 b& @& r, @2 u/ R
set customer one-of other turtles-here
; h1 W# o$ m* b4 g4 K# _0 L
! P. s: I& U! `" `$ b0 ?" Q- |
;; set [customer] of customer myself
, n1 K. D6 F) Q; X% f. A+ a7 f
& F5 T+ y9 e/ T) l: [4 a: V. A- u# O
set [trade-record-one] of self item (([who] of customer) - 1): ]7 z" Q: ?  O9 J9 s: A8 W
[trade-record-all]of self7 K4 j! |5 w! i! c  Y3 O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 R5 l8 H7 d: |( Z
( W# T8 e  c+ I% Iset [trade-record-one] of customer item (([who] of self) - 1)5 s* {* ^; L# h8 ^) r$ C: N
[trade-record-all]of customer
8 M" f& {8 u) ^$ V

0 @0 t' M  B) [set [trade-record-one-len] of self length [trade-record-one] of self
" e! o1 e& Q  d) _3 \& S  ~1 a2 U, P7 }

9 f. h2 N$ O+ L: X1 a& b  wset trade-record-current( list (timer) (random money-upper-limit))
* H9 w3 m: b; H9 @$ U3 D# m

3 T' u' e$ x" w; @ask self [do-trust]
4 O& k5 A- g- ~) E2 g8 N( ^" V+ N1 A9 l;;
先求ij的信任度
' R& [1 R  i  p0 h- f
2 `8 ?$ z; h& Gif ([trust-ok] of self)* x/ a1 E/ {' z% F# u
;;
根据ij的信任度来决定是否与j进行交易[5 N# R" A6 D% n4 i! @' g6 f5 p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ J; ]# m; I4 G  M) _  s' R- r2 k8 F: t" b, a( j& P7 X
[
1 A7 n' v( p* |2 S$ z

- G) t6 J0 s/ \2 H3 s- C$ Tdo-trade

" J& d& p2 {6 T. O9 P9 x
6 N7 T4 i' Q9 R  @3 c# \update-credibility-ijl

! z( ~; t6 A1 J/ _
# h! b* ^& j  h6 l5 w& y7 kupdate-credibility-list
/ |8 v4 g* x  k# v  K
& U- ~8 H( v6 k. i* ^7 g2 q9 ]

* ~1 s/ ]9 G7 Z0 T; g, s5 D7 V( Rupdate-global-reputation-list
0 Q; Q" m8 N4 T* p; x! X' O' n
. W8 N, d# j  _
poll-class
- f; v3 f+ G; z3 ^

5 r3 T% {) x$ [/ U$ }0 dget-color
+ r) E& ^6 D* i8 t7 y4 O5 _' A% m
/ }1 l! N* \; y( p5 M" d, t
]]
( [. G$ s2 _, D( D8 g8 x
, j/ z8 w8 }6 k$ \' |, n; G& u. V2 k;;
如果所得的信任度满足条件,则进行交易
* g0 F- ~0 V2 T" w4 Q0 a  \' F: q6 P0 K' ~- N
[

1 _+ Q' x; O3 @
. E6 z  ]. B: i7 I  r7 Krt random 360

& \3 r. t8 N( g) [* n- U- O9 b* _  F* u  R% l  F) q1 k3 g
fd 1

8 W+ @7 h8 K' L, _- m& d' ?+ {5 p# h5 A8 X6 F: [( z
]

8 o0 w; I+ E# z" p
7 S  z1 t6 p% q, s+ \2 [! Jend
/ x5 p) |' E" R7 |9 x# y& ~5 e

3 h- |% L& y( f# R) m9 Z0 f$ {to do-trust / S) ?) o% j! H" J9 y
set trust-ok False! c( D8 [* k6 n! B( l) U  `
! L/ A( ?' s  b; A
" j! j0 b9 p0 R+ `
let max-trade-times 04 C8 X$ a# K+ n' O3 i" {' ?
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 \7 P! s2 j' K3 I# a% h) j
let max-trade-money 0
  |( H) a/ h7 r( ?0 r8 mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; A& W# Q& [) M  C$ R5 X
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): }4 _7 m( M" P9 p( y, E2 C7 l: L

6 e( X; l1 g6 P

2 T1 q: r3 ^+ d/ Qget-global-proportion
+ P5 e: Z0 q* alet trust-value) K/ U7 f, f2 j! K+ {
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)
& S, Z+ A1 H5 Z! }' I0 B: s8 d
if(trust-value > trade-trust-value), u4 H% L0 p4 {, u( x
[set trust-ok true]% w0 l+ B. L* X$ W% l9 D
end3 t- G+ _. j0 J
7 P- I, n. z* P# b' {9 l/ T
to get-global-proportion
  ?+ t! e8 U+ qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& V! J# l8 V. \5 B[set global-proportion 0]
) B* z5 d% L' Q! v/ I[let i 0, e, U0 s! D0 |/ F1 g* a9 }. X
let sum-money 0
6 G4 q' r, x# _$ k: }while[ i < people]
* k6 @! f# o! O) a, J[3 c9 c6 p) ~* Y: R1 T5 P
if( length (item i
3 b" ~1 K+ d0 B- O  @0 H) q[trade-record-all] of customer) > 3 )
! T4 Z0 i, C. t  o1 D& P  i) s, G
[
6 B+ e) y6 L  k% z7 Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: R9 I0 S2 K1 D& f]
/ o* X1 J3 ~$ R, O]
5 O- N- n) ~1 \! j1 xlet j 0
' \" u; \+ e; K" Nlet note 0
* _, s* m  ]6 ?! \while[ j < people]  q, P+ ?$ ^( }  G' @2 T
[) s6 d2 M* e3 A, o& V7 q
if( length (item i3 H5 b! U* d+ ^3 k8 g$ e' L5 i/ {& r& N
[trade-record-all] of customer) > 3 )
, [( J" P1 H5 h: B4 Q- N1 a" ~- ]0 n
[
9 c9 x6 _0 K, k3 ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 ]+ Q. `4 {, q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( r+ l0 F# L/ {; X7 n( m% L9 O[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 Q( \3 I/ m# S& r; p]
6 _$ s6 X% m) G6 @]
! W/ J4 o* [8 R. V) z% U( ?set global-proportion note( C( V* U# s, V( S8 S
]) k3 ~& ]( p+ ?* }/ w
end
) a! e- ]% O/ ]( p+ P2 D
  Q7 N- h+ P( u. a' eto do-trade0 B! L8 N0 B7 i+ S6 T, _
;;
这个过程实际上是给双方作出评价的过程7 X2 U2 P. x' e9 A% R9 M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  j6 h3 Q- V2 ]" Q5 I2 L0 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 a# m2 t) M+ }  f* ?* P
set trade-record-current lput(timer) trade-record-current
3 R/ V  r' G4 l. i; {5 W" V;;
评价时间4 h) {4 j  ^4 R& k+ P
ask myself [
8 m4 x- {) _) ?7 C) P5 bupdate-local-reputation
; ]7 |' I; G+ j" W: y$ \5 Fset trade-record-current lput([local-reputation] of myself) trade-record-current
' V. Z9 w$ z# ?: C4 q" E, p' @2 ?- n0 {]
* y. o4 k+ D4 N% X" b; ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 E8 H6 |4 v. b7 x5 o;;
将此次交易的记录加入到trade-record-one
" i7 W+ P: v5 T8 z/ w: kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ V- R7 t$ B0 [0 M7 n# ulet note (item 2 trade-record-current )9 Q7 p7 m) _; g8 V5 y3 x  T
set trade-record-current
8 [& G9 u# }2 o7 D0 @5 i6 N(replace-item 2 trade-record-current (item 3 trade-record-current))

* o' F2 O$ G7 O% `' ~/ Cset trade-record-current
4 Z& I4 F2 p9 S) g(replace-item 3 trade-record-current note)4 z9 u% f" |; ^8 t

! `) I2 g3 j$ }, k

: P2 V# A+ H' j3 Jask customer [8 r, x- F. J7 f8 p
update-local-reputation0 w" z4 l5 P- A) ?4 B# O* n2 R8 y
set trade-record-current- m8 J# y# I4 j+ C, O% {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 J1 i: j1 v' I  L( d]
) S( e* v& Q6 [- b1 B) m( |5 y+ x8 Q: R5 z
0 F  |8 H- d+ O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! ?; H5 v( v3 Q. n1 K9 \2 T
2 w5 Y/ o! |# ]$ c2 z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- M5 e5 u  ?# E% l! ^) Q;;
将此次交易的记录加入到customertrade-record-all2 a8 A" O& K: U+ W
end( Z6 v- ~) t% _1 q0 Q8 _
( Q$ Z' G$ r( U7 E; K- k7 N8 J
to update-local-reputation
* o/ o7 j( q& }4 _% W3 hset [trade-record-one-len] of myself length [trade-record-one] of myself8 x- c! }6 L. J: S" Q; S/ V( p% ]

+ G( h; X2 s9 F4 G7 A: W8 C
2 N- @$ n) J3 e/ |. T! o;;if [trade-record-one-len] of myself > 3

4 f8 s9 p5 X/ F8 Z5 I' \& D& Gupdate-neighbor-total
9 a* Z8 A% o+ g, a;;
更新邻居节点的数目,在此进行2 y4 F0 x. t2 u' s4 H
let i 3$ z3 c3 v1 _) l' `. r
let sum-time 0% o( ]4 [' _; I1 x  z1 p
while[i < [trade-record-one-len] of myself]/ l0 Q8 K% W0 G# \8 ^! H
[# f: M8 V: r7 |& d2 D( E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ m4 X2 ]& Q- n$ e
set i
  o9 m: b" X- T2 h: q" W5 s( i + 1)
: l, Q7 B" Y6 Z. V! U; a0 n6 y
]3 D5 M+ [& g2 O; q
let j 34 j% ?5 s/ t1 _9 B) V0 J
let sum-money 0) @6 z1 H9 X5 m' R
while[j < [trade-record-one-len] of myself]4 ~( B. u% [! S0 k% k
[
% _7 Z# D9 }; n7 K* S# ~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 }( k$ ?- Z& n$ G3 T" P
set j& ~2 C% B- H7 R
( j + 1)

2 Z' l8 Q8 k$ }; a! f1 E]
" R* N  g; E* B7 d, v" Ulet k 3# M6 c" ^+ A6 A5 Y) a
let power 0
6 ~/ N  R* Z* `8 Hlet local 0
8 P8 D9 o$ J  }( ^" f) f8 D# j  A: Gwhile [k <[trade-record-one-len] of myself]
; \; y+ e- Q# e" U; e& c5 F$ k1 y[
* i: S* h3 l4 l" b& x: }; kset 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)
# c& a) y0 ]( V" [1 J* wset k (k + 1)* r9 a5 L3 r  z% g
]: y! S: M! \+ A$ e2 g( X
set [local-reputation] of myself (local)
$ N$ B' N2 z5 Z% kend
; ]% ~9 o" o3 Z- }
6 C. Y/ {2 ^/ `( Q0 _. tto update-neighbor-total
- w# G- |$ `9 l' `: t! I+ i) x" ?  ^: j# l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 s# W& N) ~, W0 ?  x! l/ l1 c6 C8 B4 h  N
* N7 a$ R; _- a- ~% w( D4 d

6 V& J% d, f7 d- wend
1 ^% c$ b9 e0 b+ I
0 {5 j1 j& c, M7 z# g* N9 Pto update-credibility-ijl
  p/ F+ H/ \5 H6 N
/ U1 d1 o* H/ O+ D;;
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。4 {1 q% A" }- M4 L3 |3 q4 k/ j
let l 0, M- ^( Z& `( x* V" d4 t  n
while[ l < people ]
# q2 a5 I+ b3 v' n* q, ?;;
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  K: [* c/ b5 B* a/ S
[
9 U& p; e1 M4 i! Z; Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ h3 m1 Q6 M7 _4 ^
if (trade-record-one-j-l-len > 3)  T  X2 v+ Y& Z. t9 t
[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
  w' V# u! a0 T; ^( z2 `let i 3
, g3 C8 u3 F# a# L+ q  @let sum-time 02 r6 y- ]8 S1 z: B& w" Q+ M
while[i < trade-record-one-len]+ B% A; c4 [: c  ?" ~3 K2 g* g& R# p) H
[
' m$ l5 K0 P/ I0 d) ^# qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' P6 q0 Q4 {* G8 m5 O0 \set i
; Q  W  q" z( t% U( i + 1)
, H3 k8 @5 \7 o9 w- M8 ]0 E
]: H- ]" m7 O1 y, k/ w
let credibility-i-j-l 0, S/ y/ u+ T7 [% ]" i5 L9 z2 p
;;i
评价(jjl的评价)  N8 u; Q9 B7 |! K+ G
let j 3$ Q% i0 |% `! n' D
let k 4! E$ d5 n+ O  p% V! P$ ?
while[j < trade-record-one-len]
8 {% W) k. w7 T& {, Y/ g[
6 ?1 X+ ?. G2 r$ |/ I+ m: Gwhile [((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! [) ~& y; x6 p( m9 W  W7 R: z
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)8 Q; [. u& C  z7 z
set j
! G, J$ c5 w1 @( j + 1)
# i4 a. L% \& M+ ~5 w  N! c
]
! O( h2 z  k) K' v6 _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 ))
- I6 t0 `* O. Q# i- M' W  \0 Z
* e; Z, [2 y0 v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  [' B) n- m+ `5 X+ s( `' h
;;
及时更新il的评价质量的评价/ i' D5 U2 B% }# g
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ K, T" W& {! g$ c) u- p- r
set l (l + 1)$ q) {6 K: w. n: A& t, c0 N
]
; \1 S$ L1 I2 y; C) z8 I# send2 h7 B6 r! U0 D* q5 b& K( s# B

2 w2 j/ W( N( K( i; k( zto update-credibility-list
; e0 e2 |- j" ?  F, j7 Flet i 02 \8 F$ |* q# q0 _) X
while[i < people]* l$ x6 Q( Q% K, X
[
! f: P7 w6 E" _$ ulet j 0
1 u2 l3 v% R+ }# s$ f7 D! v* z: b' Mlet note 0
, O6 K% `& b: @9 W. \9 Plet k 0! e: W3 ]: s& N. O! E9 w9 [, V! z
;;
计作出过评价的邻居节点的数目
2 [  m  j* h5 F3 g- m) Cwhile[j < people]- b$ T% z- Y# v* \0 E
[+ g% Y$ B' s( a
if (item j( [credibility] of turtle (i + 1)) != -1)
( B3 n( e& }# N+ j  e$ t;;
判断是否给本turtle的评价质量做出过评价的节点" Q8 `# i# Y% B- X3 `
[set note (note + item j ([credibility]of turtle (i + 1)))
# s/ V! A2 q7 R5 @+ C;;*(exp (-(people - 2)))/(people - 2))]
) v. `$ `, {) u# e% d8 |
set k (k + 1)& O  B9 B0 |3 ~6 F  @
]: @8 a4 o/ Q3 e0 N8 H
set j (j + 1)
+ [, o: d3 a7 b9 S6 y' O]8 w' N8 u4 J8 n, m) N+ c
set note (note *(exp (- (1 / k)))/ k)
6 |3 p  h- ~+ e8 e- V6 rset credibility-list (replace-item i credibility-list note)
- [4 W. ]3 a3 f# K* Dset i (i + 1)! ?% h& ~) y: [
]6 g+ p: A; h: B7 f, n% d
end, `" G8 `! _2 a; w$ e, q) z6 v8 m

0 q0 s4 S' e4 G& Gto update-global-reputation-list
' S: L2 F/ a$ j" s+ Elet j 0+ W0 H: w4 A5 K6 j: u# q0 O
while[j < people]
$ [* _. E3 Z& y8 w5 o. [, e4 S[
% F: A" C" B& elet new 0
4 U4 _( i% B3 P$ A, S' j;;
暂存新的一个全局声誉
$ r0 F8 X2 f" |8 [let i 0
6 M+ k5 r' \& M) Klet sum-money 0, X1 S* _* x1 @0 ]$ T
let credibility-money 09 b; Y" K3 b* x* f
while [i < people]3 g+ p- L1 a- k7 M- a9 V
[" s6 ]* c: j1 X1 c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); `2 K# K0 D' w4 \* O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 j" b+ N2 B; A$ C" l9 V& d5 jset i (i + 1)/ U) ^( U; r% z6 R9 N
]
: z& t7 q& j9 X" j$ K" [) Jlet k 0
7 @. \: y4 w2 Z' w3 ?let new1 0
7 o2 o3 O) C2 b% J) gwhile [k < people]
9 R0 M' G1 J; v9 V' Z: A) |[
: ^* V- z: |7 J! Z( Iset 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)" _7 Q3 H( j2 M: \- N
set k (k + 1)! P* D, K3 y3 E& ]1 b$ M
]) h' q# b% T1 u) L% L; [( y/ ?
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 a6 |# h7 u4 L* ]9 D( e% ]' O
set global-reputation-list (replace-item j global-reputation-list new)4 i9 A2 G  k6 h1 r3 a. j
set j (j + 1)
+ B# b) Z2 C) G0 ^% e]9 M9 e+ O1 j" j4 J
end+ R# g& \* B8 O9 h: B# p
8 `) N4 o/ H% U* s3 y& T

- V( }7 {( o$ t+ U, Z1 r
% s9 u- b0 j$ C" r! Pto get-color
* u( {! J) a& j
  T1 f" ]$ _8 q3 z9 a3 B( Zset color blue

5 b: B+ @% I6 m+ ]: r) e& ?6 Cend) `& B3 N: W2 U: |6 p" M
+ H5 I4 _, [+ e4 s5 ^
to poll-class4 }  u6 v+ J& v5 x$ g+ ~1 a  ~
end
$ b2 S. u7 t# `6 I" h1 |" w; o& X1 J
to setup-plot1
0 {, F$ r( W1 ?' w9 U- b: e- `
set-current-plot "Trends-of-Local-reputation"
, i6 `: `( ~; `0 A* H4 _

+ j' D. k7 w1 f# C; Sset-plot-x-range 0 xmax
- ?; h# w' r/ I2 \* w
- e# E; N9 L8 p* ^/ A" _$ s; z
set-plot-y-range 0.0 ymax

: U% H. V9 x! X  x. N# m  f, Rend
* e6 a+ }1 M; p2 s
. {. f# b- _7 X8 r! |! O8 N% E1 l- fto setup-plot2
/ Z3 w3 q9 Q/ U8 t( ~
' w* b4 n0 r) ?set-current-plot "Trends-of-global-reputation"

  @& i8 y( V& g4 D
4 n; K8 ^# w3 a1 Jset-plot-x-range 0 xmax

3 g5 T+ N. A4 Q9 k4 ]# f; B
7 ^7 p1 Y/ B, M  lset-plot-y-range 0.0 ymax
/ O; M. v3 _- ~) a
end
+ d$ y2 \1 ^1 N! M+ w% p& @( _" A4 S( G0 u4 P$ H
to setup-plot3
; Y7 E( |' S+ b- G& y4 e  g. t. W+ i+ {' b/ W) G
set-current-plot "Trends-of-credibility"
; h9 T* G3 k( X* C8 U& L  d  P- v
7 }- P9 x% r3 u" `! t
set-plot-x-range 0 xmax

' F$ `9 T1 [4 N( y8 H; o6 t
: n# \5 F1 n/ a* z5 b: J# Vset-plot-y-range 0.0 ymax

) l; q6 c! e$ h0 Q, B( [  ~end
9 v; `3 E3 Y4 B% X: k4 e0 y
/ j  r* E, N7 I) c! e, Jto do-plots
6 z: [0 s5 U, C" o5 oset-current-plot "Trends-of-Local-reputation"
& s! G1 d# R. T% z: pset-current-plot-pen "Honest service". n4 _: E9 I6 ~0 z! `' A+ v
end
% w1 \! r. @% c: O; q9 K+ \+ e9 _2 S% u% Y# T
[ 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.
$ q8 {) w" E1 v
5 ]& ]6 g$ K( L1 o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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