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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:
' ~$ W1 Y/ y$ T& J3 jto do-business : N5 x* i* r8 i
rt random 360
& Z8 e6 E6 [/ O fd 1! E  J) U+ I- |, a
ifelse(other turtles-here != nobody)[6 D. H  o6 Y' ^. n! h* }0 E
   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.3 `7 o0 p! x& o3 s' m6 h- W6 M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 Q9 Q" _- L) A+ }/ n! u* }; y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' h. o; R8 d* Z* E# E6 f
   set [trade-record-one-len] of self length [trade-record-one] of self- ?; L; B/ P" S0 U, f
   set trade-record-current( list (timer) (random money-upper-limit))' {0 ^5 Z8 d  u4 }* b0 N. n

" E9 P0 Y6 v  j5 t问题的提示如下:
  d+ r+ Z+ k5 d. p$ {0 E5 e* |- o
error while turtle 50 running OF in procedure DO-BUSINESS9 |, C) A4 f# l5 A* p
  called by procedure GO6 t% }* w: g# d; \, e5 Q; u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  _9 v. }* Z; o- i+ U
(halted running of go)
* C* |4 Y; X) @( q* D7 s' _/ T2 B# ?
7 z0 {' U6 D& ~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~~- P% |  `% S! ^. U9 i& Q$ g; }
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 F7 V% X; D" Q$ g3 d2 z) D
globals[5 X9 L( b+ S' M/ @2 m$ W
xmax
+ t# z! t5 z" \/ U1 xymax
9 w+ T( C$ Y1 |) ]  c5 Wglobal-reputation-list0 S8 c0 G+ G$ s" Z/ z, K

$ @8 O; w( k" M+ ^! X% i7 I/ {2 x1 M;;
每一个turtle的全局声誉都存在此LIST
' X9 T1 m) ?' N8 h1 d4 @credibility-list
  D/ _# I. ?& `  ^3 i1 a;;
每一个turtle的评价可信度6 U& j' G( T0 D0 u- N( P
honest-service. k- _" C! @9 k9 n* f# y% L2 m
unhonest-service3 ]( H" G8 c' F, O& v+ E  S
oscillation
0 `  J% }3 [* I  _# M( x3 A8 u+ t+ @8 {rand-dynamic/ b) q! }* U$ l0 ]0 g2 c. y
]
8 w6 t" Z  I; j+ q4 {; {2 I1 t+ R* m
turtles-own[+ X# R/ \% u7 H; b
trade-record-all
$ s2 O+ k0 V, ^;;a list of lists,
trade-record-one组成
% j% _% e7 e& t9 \3 M7 Otrade-record-one: D+ f! v2 O0 Q2 _" c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 u& ]8 S2 S6 S, H( U+ ]$ U6 u

. P7 _2 n6 E0 Z1 r/ q- A. s4 u& t;;[
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]]
: t4 s; n- V) Ftrade-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]
( q9 `$ e, a' }/ e; h: Qcredibility-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list9 |/ [- \& ]$ ^4 a
neighbor-total
  @7 l8 _) a% t% H;;
记录该turtle的邻居节点的数目9 _# M$ e( n* P* G+ J4 b
trade-time4 n3 i7 m+ F2 {
;;
当前发生交易的turtle的交易时间
% {' a+ t: p: z, P% }, B3 Kappraise-give, z$ N7 T. X- l1 H; c: R9 W4 B9 F$ ]
;;
当前发生交易时给出的评价
/ U: w2 k0 e* t2 |appraise-receive5 D/ U; r4 `" f9 n6 v; R
;;
当前发生交易时收到的评价  T! I+ h2 v1 T7 _% o/ }
appraise-time
, z& q2 Z# H1 ?3 |, H$ v; P;;
当前发生交易时的评价时间2 h7 p  x" u: i' a; |" I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% k( N+ X' @- _( l- Z
trade-times-total
+ R  u- |6 T/ R# V) R4 q5 j;;
与当前turtle的交易总次数8 ~% `& |" m) }3 a
trade-money-total
. P4 V" c( o! f  ]- ^9 @2 i" f6 S;;
与当前turtle的交易总金额3 W# {) P8 ?/ d! a- T: ^
local-reputation2 N3 B" y8 G# Z
global-reputation5 P: ]* G! ^) F0 a/ U# ~
credibility
; G' z7 d- S/ P8 u: D" s  I0 S% [;;
评价可信度,每次交易后都需要更新0 n% \/ c: d+ h' T
credibility-all
3 q9 s4 N' P/ ~! f. ^- r& o* D;;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$ y6 Y6 I+ C0 L+ c+ a/ C3 i
; o, o3 ]( |9 [- N2 |0 r% f
;;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
3 L4 G  S- e5 v' f( qcredibility-one
) ]0 i2 S% L, O3 ^- g;;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$ w% _7 x; i* E4 i% u$ |
global-proportion4 m( o; N# l1 t
customer, V/ F2 a& O2 W
customer-no. ]& I  d2 D' S9 b0 Q0 ^- D
trust-ok
- w1 v+ m+ m+ u" X6 Wtrade-record-one-len;;trade-record-one的长度: i; x6 R1 O' B! L/ {2 _8 |
]; e/ {4 S* F& x0 I

" U6 J' g1 \) b3 l( z;;setup procedure
* s2 N6 b" ^& V* y) B8 {- C" w( B' Z" v% N: `% v9 [
to setup
' N( e# P. W* r/ j% p% J' m; T0 c9 c) q8 e0 v$ `& N/ a# V
ca

* f* W6 B. U; R) @% S. |& u; _; [- m# q; ^" y9 C/ }$ B. r
initialize-settings

6 C/ x( S: j$ i/ H5 H$ F4 B
. p4 e! m3 {2 h$ ~. l' N0 }$ n# Q# jcrt people [setup-turtles]

5 \4 F' x: ]2 n' [$ e% w/ D. o& ]- Y1 q3 j  L% D
reset-timer
: G+ A0 w4 q: ~! A3 ^  V* R5 T- p: z

# K5 n  x9 y; Wpoll-class
+ }3 l# b/ R7 k  j& c* j$ B
5 ]7 h  |+ S' [2 x8 D7 M
setup-plots

  z9 z# N; e$ {; h! b7 e  r* s; W2 G9 a$ f, O! Y
do-plots
' _/ D. c" r: v, d+ p
end
. e( o2 ]; t6 ^
, q4 }3 X4 ^- N+ l2 G! v9 Hto initialize-settings* V: H" Y. h9 E' D7 S

. p' z& X+ J! N1 q  W. r# R; Dset global-reputation-list []

5 I  D0 K) A. h3 j# ^" K
) `+ a+ o' N5 U6 v/ mset credibility-list n-values people [0.5]
/ p- M' b% Y& S7 t4 W' q
# V" E( n+ i+ j
set honest-service 0
( g' F3 S( f/ P, g  z
& S4 u5 v0 D# v4 n
set unhonest-service 0

2 G6 [4 _4 T' \1 {% l
+ T4 B$ e0 K. f: Nset oscillation 0
' x1 F% D  r8 [% s# i" t0 Z
$ T' D6 L0 ~5 Z. Y$ u! c( |* _% [
set rand-dynamic 0

& w) Q' t# d- J! u6 ^' Q2 `end
/ r, J* J. o& G; y) y0 S
  P- L$ s7 Z" Yto setup-turtles * [0 O0 Y1 X% p
set shape "person"! R3 U6 O* @- G1 O
setxy random-xcor random-ycor" u  c3 u/ y6 u
set trade-record-one []
( a& X7 V* ?# g3 [6 y
" X1 r6 ?$ H; i6 X) F9 g
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 U" V0 J: F0 {; [$ w5 U+ B
2 C. S  L0 l4 ]2 Q
set trade-record-current []5 Q7 d! S- i( N* E) S
set credibility-receive []/ h8 A  e9 d" m* I5 A  P
set local-reputation 0.5
. M( |* E9 S( F% Y. z. ^+ m3 p) fset neighbor-total 0
) E) o; A1 P5 [' M: J" L9 z% Y0 N+ `set trade-times-total 0
. \, @* u: ?$ x/ ^# nset trade-money-total 0
% o% D7 ?" c# m1 Rset customer nobody
, A1 n& C$ |6 u! a! t8 ~set credibility-all n-values people [creat-credibility]
  }" ^0 k4 f) k' P4 X2 o: ^set credibility n-values people [-1]
+ x3 S! s0 F: X* Gget-color& v* Y/ g; h+ ~6 }8 Q0 I
. E. E' x+ b4 x- z: D  j/ f+ n+ ]
end/ M) o. x9 f) {

& c5 [7 o+ `1 B& m) \: tto-report creat-credibility
1 j0 c/ T: K5 a, U) G4 M/ Breport n-values people [0.5]1 c8 @5 s# }! B" J) U7 u; c
end
- L4 D& x% F" \9 h; H# l+ P. D5 u2 v7 W. w
to setup-plots; c% C/ W+ q/ x& D$ X8 U0 D

, l& Y2 S9 F6 ]set xmax 30

* V( o# g- x+ {: Y+ v% k. V' U0 ^' k9 |4 `: J7 ]' U# U
set ymax 1.0
, `! e0 T! b" z
- y0 }4 O; `: a! r. ?6 {; O
clear-all-plots

) \8 m4 \  B% t" Z2 ?' B: M
0 k  T6 V0 P4 }3 L8 s. {, Esetup-plot1
" T0 T8 I: t( T8 S
5 A  \+ _1 ]7 T
setup-plot2
% Z7 |4 B* n  ^: K3 v# m

8 Y# E5 L+ n  J9 Rsetup-plot3

1 f) ~1 O  t4 }" |) O: e% ]3 ^end
0 N# H* r, B% S; d$ d4 e
! [3 S& M( K( b* h% E( `  j- ^;;run time procedures% \# y) ^% T. D7 W% P
1 \) u1 ^  ]# c4 G
to go( u) F0 P9 u: _* a- U- T
/ H. ~9 r0 A+ F. R9 f
ask turtles [do-business]
# d- }& x" ]1 A* Y, Y: D3 \
end
1 c' e( n  S, p' H7 {7 x' K+ x* O  o) D4 ]4 V
to do-business   v# q3 b! f4 Y/ Q4 z5 L

" t; Q! a) {& ]
# N' J  S7 x- N- k) a8 c9 ert random 360

4 _' W2 c. x1 i
1 o( T" f1 e' p! Ffd 1
" ?- ?0 y4 y8 L

% Q7 u, j' D" Y4 P( N/ _  O' f# Aifelse(other turtles-here != nobody)[

4 O1 P: H( l- h% `; `( J! C/ a: e; E3 q, U1 _
set customer one-of other turtles-here
3 ?+ e. }0 [) u

. m7 s/ @1 n/ N" T1 R" C) M;; set [customer] of customer myself
" U) B) o1 s9 ]6 W

: h2 S: X1 _; S2 s6 }! dset [trade-record-one] of self item (([who] of customer) - 1): l4 M# }: r) ?+ Z! t, B
[trade-record-all]of self( E, ~& C  c& {- M" I4 K
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 v9 T% ]' n5 i# ~5 I/ v0 V- c$ V; e1 U2 c0 S/ d8 s: m/ |2 ^
set [trade-record-one] of customer item (([who] of self) - 1)) G6 q; T. p, N' v
[trade-record-all]of customer

  z6 Y! b0 Z8 E! ]! o: p: Y
& C7 d3 _. t" n# w7 f7 Pset [trade-record-one-len] of self length [trade-record-one] of self

: C0 x2 B5 [* v9 _
  s1 k5 {+ w' P4 r/ Fset trade-record-current( list (timer) (random money-upper-limit))

' @/ y6 r; X! T" \6 y8 c, A& ~0 i3 Y) F7 \2 ^
ask self [do-trust]- P; m! w4 y3 [
;;
先求ij的信任度
6 j7 g5 w2 A* {# P. P( f9 [, o- _+ w7 M2 y- x+ p6 u, H
if ([trust-ok] of self)
" v" h/ j3 s2 y- A;;
根据ij的信任度来决定是否与j进行交易[% Y. L6 k: X; v2 r1 h0 c) z9 Q9 I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 c: m& P1 a, P" \# L: v, u; K

+ K& a% b; ^5 I2 \# ?1 ^2 Z[
/ r: T1 I1 M2 k# t2 ?
; R: g. o" @! ?
do-trade
+ P+ y8 X. e8 W! i
* z7 o9 r) i3 g( p' }  ?
update-credibility-ijl

  u9 f/ q9 {: V7 `3 N/ s
4 H& y7 w* l$ c0 u! {- Xupdate-credibility-list' C0 f+ q9 A  X/ j0 v2 @
4 {* n4 a' }: ~0 U3 M9 b8 T! {$ Y
0 x4 o; l. ~& _) Y, R5 e
update-global-reputation-list

" V$ _6 m4 ]8 [, e+ b3 v* B) e4 F! D2 P4 I+ P% S( \- `
poll-class

2 V; V5 @" ^, K4 H  `
% [  a/ N1 q  r! L- k; G. sget-color
; o0 ~; H/ N, y, @

' M8 T# G; G5 k, g]]
+ m* K+ M+ u* {& _& `  x# \7 W* A3 L- I2 B4 \
;;
如果所得的信任度满足条件,则进行交易2 c- n; q$ E. n! c

' m- {9 Z( g/ J2 P6 I[
/ h6 t# a7 y( N4 P2 O7 ^% W6 U

2 s3 Y4 c1 S% }9 B' Yrt random 360
; C, {4 d. l- `5 @6 ~8 ~
& t2 j. C6 d7 G5 c
fd 1
- m! |0 \/ v7 b+ O' A8 |* Q. G
/ ^( R; l& [. I' g
]
5 X2 ~7 w$ k1 l: q7 M6 W

, d+ R. S' a  E- G" p* f  Lend

# Y  u# J4 p: p$ x& n0 Z- a+ h
to do-trust , b0 g9 Z' x; H4 C
set trust-ok False9 s/ [1 J" y" }( ~7 i9 l
9 u5 p: H/ l. A7 D

% ~/ \4 o) p* alet max-trade-times 0# C% `  z: t8 ]" V* I5 j$ L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 S) C$ s; h' Clet max-trade-money 0
/ a/ M* ]5 M3 \7 sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 o: J( ?9 @& T
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  I7 W% K5 X8 @( H6 d
* a" p+ c7 i1 T3 l; M. z
4 n5 J5 s3 _0 W, O2 T$ e; c
get-global-proportion6 J9 t6 N4 h! z$ z/ u$ ^* H( |/ V
let trust-value
3 r! K! m" i) O9 ^! ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* P/ P4 ?& G. z4 }% p
if(trust-value > trade-trust-value)
* q4 H, C5 j9 \: j- d+ Y- J+ N[set trust-ok true]
) s7 J' ^0 s; gend
9 n4 C. b0 I( M* z/ X& l5 C, J+ T. L! B' e5 n) Y2 `& Y
to get-global-proportion
) \$ Z& }9 j! pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ d% B* |% B9 N$ E
[set global-proportion 0]
4 D: M1 Q6 w! x1 X: _[let i 0
( N7 \, b: c. j% elet sum-money 0
% ]+ U! f& d6 K8 F. s  nwhile[ i < people]' {7 l/ f% g) J% X" s, [" P
[
/ V  z) z9 G2 t3 q3 r; C" oif( length (item i5 d( }" D9 @/ G4 J1 X5 x/ P( T
[trade-record-all] of customer) > 3 )

1 e2 `! ?' _: {3 {5 E, K[7 ^$ G' H' t) s2 g" F( {9 d( ^$ j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 C1 X- U. }+ F]8 q2 B: y, v$ L$ L: h  Q
]
' o& W' J. P, p6 Q1 Nlet j 0
' V6 ?' A. l8 h- I) u; Elet note 0# z9 J6 k7 L/ D( V! `, o$ K- y
while[ j < people]
4 h1 \; v& [6 r4 ~( m$ K4 r[: V# ?- h5 Q$ W4 }; D- q4 g! |$ }) a
if( length (item i
0 T' M0 g' l2 z[trade-record-all] of customer) > 3 )
8 a+ ^5 o, N- q
[# X8 H3 I5 ?1 q5 Y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ i' U6 I; u/ X0 ?; [' ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; c9 h  Z  x, B. }, V: h' w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 s6 |- W9 L. L" }) c
]
# ]0 Y" j; ?* b: G]
& r6 p+ [  Q' o' i& n% c0 a2 Cset global-proportion note
4 d+ |' P  u1 m9 e]6 e# |1 `, m6 x4 i' r& k! u$ ~
end- v/ h4 n4 M! A; ?5 N1 L
* P# j) N& F( I/ Q' `
to do-trade: X- {! x4 ]* K1 s1 l! a: K
;;
这个过程实际上是给双方作出评价的过程# g8 a/ p! O( j' R# Y, U8 T/ q2 Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  K; }8 g1 ]3 o/ B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' H' T+ g* M: u5 ^; m- p
set trade-record-current lput(timer) trade-record-current& G9 W5 O) G8 I; k# j
;;
评价时间( H* G* ?1 u- M) R& x- `
ask myself [
- g/ M1 [, ]/ {) b8 d. k3 F* ?update-local-reputation* x; j/ I% p4 d1 _9 X
set trade-record-current lput([local-reputation] of myself) trade-record-current6 R$ ~1 f, C9 V/ `
]3 q+ a2 v# e0 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 I5 g9 L/ _% J3 I
;;
将此次交易的记录加入到trade-record-one
, j( ]4 ^7 P! k0 M, {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& Y5 d2 q8 q5 Q/ o5 @let note (item 2 trade-record-current )
4 A0 C7 H; M, y0 Vset trade-record-current4 I5 B! D8 E! U  f& ~; [! _
(replace-item 2 trade-record-current (item 3 trade-record-current))

" Z8 P6 o8 ~. h$ ]  f! F! Hset trade-record-current
# _% q% q4 ~7 e$ p(replace-item 3 trade-record-current note): W. j, x1 o& ^6 ^# d- x' @

, c) T+ z) u; F& X1 ~
' `5 T# p4 v- x5 Z
ask customer [
& V( b" S9 ?- Jupdate-local-reputation4 @1 s9 F1 ]8 D2 I9 V7 W
set trade-record-current
6 q8 _& o% `# o' |. m) Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 Q/ n. d1 j( S3 M% Y: d( G- }  D' X
]
$ @6 b! o  C. Q
. ?$ D, Y3 Q* U7 b
* C* Z5 z5 u: w3 a( b+ J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! Y5 a" h) d) `0 T. A/ t
: a- U2 u% T* a2 B9 N7 f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 ^  E4 k$ p+ r  t. D
;;
将此次交易的记录加入到customertrade-record-all
. b' _0 u' d. K$ z2 L: J& n- E8 Iend
' R# O9 ]% M5 g- i* K: H
5 f# A0 d8 q' @. c5 Xto update-local-reputation
. ?3 F/ H8 S9 F2 ?* m/ o! Uset [trade-record-one-len] of myself length [trade-record-one] of myself
6 z  R# g; e0 l8 j; o) Z% y5 C

# P8 t5 c+ u) \/ _;;if [trade-record-one-len] of myself > 3

/ I/ X3 v5 e( U2 a4 d6 aupdate-neighbor-total8 c4 S6 m. D: b6 q' {
;;
更新邻居节点的数目,在此进行
' O' o5 J- U% U0 M! ~let i 3
  U$ n. E2 z! C5 v+ t5 elet sum-time 0
& x$ a2 u* L9 F& Ewhile[i < [trade-record-one-len] of myself]7 k- E. ?! y# c" E  C  W( B
[; j" p  c9 j1 s  n- ]1 w5 `* L
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). s9 @4 N: R- F$ q
set i
0 }/ A: c! R& {) X+ o( i + 1)
0 @# B& ~7 t6 t  P# _
]
; r2 ~( x% c) z0 A+ wlet j 3
' A# j, B7 x" Y: H% i( Y7 a( \let sum-money 0
/ i; S& ]% c0 v7 x; `1 bwhile[j < [trade-record-one-len] of myself]: C7 ~! m# H8 L9 m
[
3 l! y) |. R) j" w4 N) I; Hset 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 ?) f+ l' M1 i' Tset j
" w; N" I- q2 y2 L( j + 1)
; Y  Y" Z8 d6 s0 n( G; j
]
4 l; V" ]7 A; K  y1 g/ l/ J2 }let k 3& U4 @- g9 K. |. R
let power 0  G6 d( T) w) o* D/ ?1 m
let local 0
  ~+ i( J2 l2 Q9 X* q4 x. uwhile [k <[trade-record-one-len] of myself]8 G1 C, h4 Y" p" k" B# ]
[. M/ \2 v7 s+ M
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) " j: m4 n* N- d# W* t& c3 |! \4 z
set k (k + 1)4 }( s) W% Q; c, c0 d
]
5 e- ]' Z6 ]- |8 G' Sset [local-reputation] of myself (local)
3 D9 ~0 I: E$ ]9 qend
) ~- G: ~2 T2 j" `6 n/ E3 i, A& i5 O8 W* K7 r5 C3 B0 N
to update-neighbor-total. U, ]: c, u; V1 d) h. A

& }! d" b- S1 y/ t3 d4 lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: L; \0 A0 q, J
/ V0 {  q' V7 F2 g8 x- a' s" n: x

( N, H5 U% m+ w- D) pend& z# D; v: W  l5 Y; o
( h8 w8 C) U; M3 ?
to update-credibility-ijl
2 i( v/ f6 ^5 @$ A- }) u& Z7 {' d% d+ ^, @/ x6 N4 o1 M
;;
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。1 d+ s6 O7 h8 _7 A
let l 0
" O0 b/ D: d( J7 owhile[ l < people ]
0 q0 n  ?: Q. ^6 o3 U$ Z; _;;
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
* [5 W- ~9 o2 j# C3 ?0 v) {[9 I( P! \# X) l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( D5 X1 j# Z5 O4 f8 W
if (trade-record-one-j-l-len > 3)4 S, X# ~  M7 n: V! ~8 C& K8 @
[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
. h; e" V0 [4 t! L, ]& a4 k# p0 Qlet i 3$ ]+ @' e3 L5 @2 M
let sum-time 02 F9 }" j2 D$ \! p$ T% F% b4 |' p
while[i < trade-record-one-len]8 t; j% x! L- V1 I) J1 w
[6 f$ h0 w, F/ g; K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 G9 B' e& ]) s7 z
set i% O9 ~  O8 t& E/ t$ s, @8 C0 \2 F& k7 _
( i + 1)
4 m2 U: Y8 Q' R
]6 w/ }6 H1 N& S* B, w4 H
let credibility-i-j-l 0, b/ a$ s# Z8 j) c% H6 }8 }
;;i
评价(jjl的评价)  S+ R0 Y6 K; [1 B
let j 3
& O" d6 N- u6 s- d. Elet k 4
6 p  x. ^4 l& M+ q4 j, j8 L! x$ Bwhile[j < trade-record-one-len]" x+ D8 K. ^# Z) W
[
& ^! H8 _, c! o1 B5 awhile [((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, f3 B( i3 l- p$ P
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)
  S% Y; {# [2 p  I, k' iset j
2 y  B+ H1 `% y3 C" E( j + 1)
$ i4 b" X4 Z5 A+ q. v$ j
]
* [8 S$ g+ j2 a8 W- n: i, Fset [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 ))
" g2 i: y' I) Z; @  A1 E# T
  s% ^% j+ N* J' [% I+ {2 M$ x& ?; G

% z) u8 v. p5 f! qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! U( r8 i3 w9 c) ^7 i* I;;
及时更新il的评价质量的评价
9 \% T: N$ z& M4 [/ Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 D5 {6 _5 }5 \. j& D- j; ~
set l (l + 1)! I8 j& K8 ^) i/ ~& n& n
]6 h1 F- l& O0 v: X
end' s: n) o9 L+ \- ]) E/ g9 Z7 u( N
4 t. f  J( K& b! }: s! G
to update-credibility-list* q+ R$ p2 A" V
let i 0
/ T1 o  G2 t" y8 k) K0 ~/ ewhile[i < people]$ }; W5 S% C" _1 O$ e' p, Q# R
[
; R( K5 c9 o# u/ L. g/ ?let j 0$ b/ W( k& H. l1 s  b
let note 0
" U  X6 w0 k8 ]2 D8 t% Zlet k 06 q6 S' y; N4 K9 H$ ^
;;
计作出过评价的邻居节点的数目( I0 [( v# j1 V! T: E5 i2 P
while[j < people]" D3 [6 v5 T) P/ e9 I# g: ]
[9 J3 P) R( d8 z( n- Y3 K* K0 I+ c( m
if (item j( [credibility] of turtle (i + 1)) != -1)% k' }; m/ o8 ?0 Y- k3 T& Q
;;
判断是否给本turtle的评价质量做出过评价的节点) k  i6 O, }6 g" [
[set note (note + item j ([credibility]of turtle (i + 1)))0 \1 ^3 C4 l/ j% L: _$ g: N& d/ W
;;*(exp (-(people - 2)))/(people - 2))]

8 H8 E+ \* {) m; c' j3 y+ i1 L! [set k (k + 1)6 m$ M  i" E* m% r% s- _4 D
]7 ^0 ~* m. n* M
set j (j + 1)# ~& Z1 ~$ ^( Z( M3 A5 c7 o2 R8 N
]' w8 |3 e) O5 S+ \
set note (note *(exp (- (1 / k)))/ k)" p1 y1 U9 i: ~' G4 Q8 E* ^) y1 H
set credibility-list (replace-item i credibility-list note)
& \7 C4 c+ Q8 X0 Pset i (i + 1), A( D: Y6 t  [- z8 \9 _
]
: w& l  F1 f' t! u5 a8 K7 r3 lend
! g% a/ {) O) z+ l; y* r( @: t  E" Y, P9 X  @6 n
to update-global-reputation-list
4 M1 m! S7 g9 `4 @let j 0
) \9 w6 p. B& o* K9 q; p. qwhile[j < people]' \: j: C% ^* ]& h
[
8 C; P/ }! P& J, olet new 06 A5 x. }: t* |& t0 k
;;
暂存新的一个全局声誉
+ x7 S2 r% }. L; E$ x1 Z$ Llet i 0
) R+ q/ O% `9 ^( N/ u! Z2 ^let sum-money 0
; ~% v- E) ?: w3 X1 `let credibility-money 08 Z6 i8 A) _# e* \) @
while [i < people], N- N7 \- a, [; F. ~! K
[
& ^0 q: j' _8 e, C# O  Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 c# A5 M: [5 A5 Z0 ~' I( Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, E; v  t! M) @& h3 W; tset i (i + 1); r4 _( C0 q4 E8 t( f
]: R. g) L: i. j- ]' z! W4 M
let k 0
/ g- F4 }5 v! d0 u: C6 Y  l( l, ~let new1 05 h: f+ p1 b" D  M
while [k < people]3 t6 Y5 X3 S# b" z
[
; P! r. q" v7 l% ^7 N9 R2 p4 Q0 `$ eset 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)
% x/ Z# v! f. J) e8 s/ nset k (k + 1)
7 V" S" _. ~! F% K# G3 c' q+ R]
5 f. t. u0 H9 a6 ]8 S$ t) fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # D# @* T, X, r2 \
set global-reputation-list (replace-item j global-reputation-list new)  R. E# O% E* x, q' M' `3 F
set j (j + 1)0 k8 |( k# y; o6 ~8 s6 S
]
1 r* z, V1 S0 F! T* t" [8 \end/ k7 A1 X  M: Z3 k9 |( K2 p

2 A9 ]% {; e  w3 A8 d5 q8 @+ b- x( }. z
! a4 `# T, r/ `+ M! Q# ]
to get-color
9 Z; ^" @9 W4 W; B$ v/ w4 S2 U- p8 E& D# c0 r
set color blue

2 w" B7 \9 O, c, l" t+ Qend% o; F( M. Z8 ]' D1 X% h
" E5 O# Z6 G0 J. w/ w$ z% M
to poll-class
' `9 V9 M3 C6 `* t$ f/ nend  X9 I$ x% Q" s: q

  `( p5 C# N: v& Ato setup-plot1! f2 h8 ^$ ^8 z# I5 P
1 i+ ^8 w9 D1 d" g' J; [
set-current-plot "Trends-of-Local-reputation"

2 B$ V+ ]: j7 }. Y9 Y, J
7 j) M3 _4 k: R5 J7 j% C& s' wset-plot-x-range 0 xmax
/ @% J0 k5 ?% c
: T" e/ r* h- J9 s" N5 R
set-plot-y-range 0.0 ymax
+ W9 {6 Y* |. h* v$ Z' z1 a2 \
end
4 `/ Z! ?# x( T/ {
) O/ b" W8 C: b3 W9 sto setup-plot2/ _" z1 j/ F- |  c/ [) O
" S9 L6 }; Q8 j# A
set-current-plot "Trends-of-global-reputation"

7 D9 P" L5 X1 ]) p7 g
0 t3 p9 l( z0 fset-plot-x-range 0 xmax
: n, D% u9 Z/ p6 R- [

& w( s3 f; w) K: g& ~; {set-plot-y-range 0.0 ymax
% D6 b8 z; L) J9 l
end" g' S0 i% N7 h, h

  P" d3 ^/ L5 F& ?+ ?0 ]& pto setup-plot3
+ r. W; z" i2 i% N# M- F5 ~
; S) I$ Z+ b, e/ d) [8 Q6 |set-current-plot "Trends-of-credibility"

6 A) V! m4 m5 ~( p. o( v3 @
. I$ B8 k- H3 X2 ^: \) Nset-plot-x-range 0 xmax
" N$ ?! j( {+ y* s: R
* ]9 D$ O* I" o9 C1 W# q
set-plot-y-range 0.0 ymax
8 P8 z0 V$ V+ w, L% x& R5 T7 a
end4 n6 K4 G7 }9 H- h

' A6 P- E: r& e* yto do-plots* O. |/ v* Y' h7 `5 E
set-current-plot "Trends-of-Local-reputation"' f0 X! G! }7 n8 p% M9 ?0 C  }
set-current-plot-pen "Honest service"
, d& X/ I, j( t0 k5 T& E2 pend+ y6 u5 N/ r% o! d

$ U* x8 K0 I- w. G[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
$ z' o1 U8 s8 a+ N' d' f
3 }$ t8 [" L% A+ V* b+ ~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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