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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:5 g: @+ A+ `9 p3 @7 V
to do-business
8 p7 s* o0 v- h( ~ rt random 360" {. ?) k& n: q, ^1 T
fd 1
6 [% q$ ~8 b  @  b: ]* L ifelse(other turtles-here != nobody)[
" ?/ N! @" ^; U% }% ]   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.
6 M9 N/ O6 R% m5 h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) @2 h. d8 {3 Y! x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 O3 x0 _0 Y/ k0 F
   set [trade-record-one-len] of self length [trade-record-one] of self
! b* z9 V( z! b% C   set trade-record-current( list (timer) (random money-upper-limit))6 }/ `% h) J7 b* v, K

  x. D; m1 b; y( i* a6 n" ?% z问题的提示如下:
$ {: K6 T; t  M. S0 T& {
1 A! l  y: S$ @+ Z' J: c) gerror while turtle 50 running OF in procedure DO-BUSINESS
! a" Z+ h- C; T3 {0 `  called by procedure GO/ _; T8 u% J* P2 W" F" q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% I( B' w: v+ W* \+ a9 n
(halted running of go)
2 _0 D; r/ n) z, [) i; E- R$ f6 R. R/ C* ~1 L
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~~
: c" I6 O3 v6 L0 J# V) t/ ^% W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) w' r& H- U- W$ ]- F( H& H# x
globals[* Q0 c$ n# W" O/ W5 s! ]% o" [
xmax
/ J( H' z6 v: f0 A" @  {ymax
, `0 n8 F! j, t" Cglobal-reputation-list4 x. R5 r. j( ^% A3 N( h' ^* w
8 J* w# [3 ?- @: P. ], s
;;
每一个turtle的全局声誉都存在此LIST. b9 d5 S  l9 u
credibility-list0 N" D% V$ V2 T" i$ |  {
;;
每一个turtle的评价可信度
: {' i6 J4 e3 c) ?) f% thonest-service0 n  s6 k! [8 O2 J: F
unhonest-service6 H) V5 a) c; @0 B* s& [* e4 X
oscillation& {5 g& S. n: }/ z- s
rand-dynamic
2 ~- \2 L6 m( n- f6 K# D8 y4 ?- W]
1 t6 y2 `$ v) F+ ~5 ?8 w8 e1 g; `( N# V3 P
turtles-own[
" u9 \0 L0 \( _) R: |trade-record-all: ]; a. ]) H4 L9 l: o& }( e# X
;;a list of lists,
trade-record-one组成
/ ^6 C6 r0 f- C8 N) X3 I' ntrade-record-one. Z+ N! C$ x9 C& o6 B- a- i7 a
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 p5 |$ ?/ Q1 z' f# _& ?

  L' @! h4 [" s7 @8 k6 x" 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]]
! l6 z  [) \  g# y: ?1 Ytrade-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- s) e( R- E
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
3 z  a9 K* B8 i' |/ yneighbor-total
8 E2 A5 ^" T( V& R+ R;;
记录该turtle的邻居节点的数目
/ E; x1 C8 B) ltrade-time- k& I4 M0 u' r
;;
当前发生交易的turtle的交易时间" u( R+ k3 P. s1 }5 \
appraise-give
+ y- C$ c- [% o* ?1 z6 c, d& x0 M: j, W;;
当前发生交易时给出的评价
0 r/ ~9 z' Y; I8 u* b4 f1 f: V' v. fappraise-receive
2 }" i4 T7 k6 V;;
当前发生交易时收到的评价
, p& I4 E6 `" \; Y  _: Fappraise-time
. n$ `/ f4 }  b& t;;
当前发生交易时的评价时间4 F) [* w5 R* e. X$ D
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 Y7 @4 F$ [: d$ U& h9 e" p
trade-times-total) z: D7 R! \0 m: ^$ _
;;
与当前turtle的交易总次数
0 \6 D( a; F& p: k" ^+ ~9 {trade-money-total. ?; W+ ^' h" r+ S' X. J7 U
;;
与当前turtle的交易总金额% Z0 C5 x' E- B
local-reputation+ b) I* H% n# s, A& |
global-reputation
7 X$ {) k3 E8 r9 `8 t# Mcredibility
4 d/ }2 K7 d0 Z# I' X;;
评价可信度,每次交易后都需要更新- Y( f) O0 }% P! E( C5 n
credibility-all
- t- [# y6 t" V+ K+ v5 N. P' \- 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
0 T1 b/ `  z+ c, @1 s; `/ r/ b0 @( A; S
  x) M1 Y5 _& |+ `2 k, R6 a;;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
. G7 E' p% [8 \1 e! f( l3 {) Q3 kcredibility-one( z# j" m+ P! T. V' j
;;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# g# u6 Z  l& iglobal-proportion
7 m8 B3 W/ Q, D. Bcustomer& ^% a4 Y8 v$ H+ v6 H' p. J
customer-no- g( M1 r" }" ^7 \* b) U
trust-ok
) I8 T0 y, ^" n1 n3 C& j, Q  Ytrade-record-one-len;;trade-record-one的长度
( R/ |2 N& a1 U7 g$ Q; t" P]
3 p1 f1 \- e! J- R( w% n
5 {6 b; Q4 X% K8 O. k8 u;;setup procedure
! E" P' B2 g# [- C$ ?6 v& r/ f
) W' \1 \( l( ~  Q/ Qto setup
& k* I4 L2 A/ K- T8 h9 ?' E* {( ?+ t
ca
8 T( G4 a8 a; O5 Y) K
  [1 E3 M/ G# L# I  N/ P7 ?
initialize-settings

( f/ u; P7 M7 V* M1 U+ i+ t( t
8 }  y8 ~( E' F, C) t. H) icrt people [setup-turtles]

& _2 {) o7 d: M2 w
+ l5 n$ B- |9 W, i" Y* I1 g' Preset-timer

& l0 v4 x" ^% x& r- x% R- g, C4 H2 o4 u0 ]& D; V
poll-class

& [1 G. Z+ {% j& }$ ^) a4 c! M! ?* x, e0 Y: F0 ~9 n, X+ h
setup-plots

! D9 _. [" B7 x% ]6 K
/ _( {& _: E% n1 t, f4 h/ j6 Fdo-plots
4 N( ~6 @8 X& k" |# w
end
2 @& g$ V1 E* o; R" G9 n* a/ [9 h
) B: T4 B- s! d! k* `9 `9 B: jto initialize-settings
" X1 y$ n- i- G6 q
0 c1 o8 S/ P% A5 G9 r; t% S9 L  j/ Rset global-reputation-list []
9 C$ K6 V2 e  a* i2 ]$ g

6 E4 `$ X5 b/ hset credibility-list n-values people [0.5]

/ ^) S' ]2 q, k5 ~( v
2 ^; Z9 N+ N! G% K# x0 O# `; `5 Lset honest-service 0

' P1 |$ X& v8 _7 M# f; W9 U$ y# h; l9 Z4 I% Q5 |
set unhonest-service 0

, f, M7 o& E+ H) ]* z4 W4 n; c  X4 j! U  p# R/ j
set oscillation 0
7 P( [  n$ u1 T8 P0 P; o
( O7 M7 [$ U! `
set rand-dynamic 0
" r+ v: M' J# r' w9 H2 p
end+ ^8 E& l: t/ }# H- Z/ h
7 j# g$ a* I! ~6 n
to setup-turtles * }( G. y& `  _  P4 g
set shape "person"
; H2 t) x- z9 L) Q& `9 ysetxy random-xcor random-ycor
/ U* y" N8 I1 ~set trade-record-one []
1 B" c" Q. r" ^1 ~
/ U. F  }0 v/ b: m  u
set trade-record-all n-values people [(list (? + 1) 0 0)]
) ?6 D( m& C0 a5 L& i( L
! v9 U) v% w4 I3 ~. F" Q) ^( v
set trade-record-current []' Y- S2 @; @' Y1 D, }7 }5 P
set credibility-receive []+ \! h7 \  z/ I$ y' N  b
set local-reputation 0.5
# \8 r- ]6 v7 T5 P7 K$ Vset neighbor-total 0
& X- i, H0 A- k+ s" ?  B; Z- m, rset trade-times-total 0
) V' h1 v( E9 S6 K. K7 a- ^, Wset trade-money-total 0
% c) V& C. q  w9 c: c& Lset customer nobody+ Y& E$ v! i# O5 \0 C
set credibility-all n-values people [creat-credibility]
, u) l& Q! i, {+ Q: n# gset credibility n-values people [-1]
3 l. T* r- ?% J% `get-color# g; r* E+ Z! n* z$ I! o7 W

" ?! p' E: }, K( Mend( d5 R' V5 E9 J8 l
4 E$ m, U  K$ M5 l
to-report creat-credibility( e$ b& O" p/ v; P( P: B, x
report n-values people [0.5]
. l% g) ]! b/ l/ ?% |end
9 I: u- ]9 y9 {( E5 J
4 U. V9 q) j" r* Q8 s; Z) u: oto setup-plots
3 p9 n) p6 Z) c8 M' L
9 T* t, x3 n2 ^; D: ^3 oset xmax 30
- L6 r/ p6 F9 S

: C( F  [2 `1 N, A1 G% Xset ymax 1.0
9 q; i) s- ~; b9 V% E3 f
" d6 Z7 s( X- F- \
clear-all-plots

2 F1 l, W8 H/ h3 `
" B" ]9 E" G# Ksetup-plot1

0 d! {& y4 z2 X% I, w4 H4 `* q4 l+ a1 {' S  m
setup-plot2

2 p3 I$ }$ A! V" L% k1 Q
5 q3 ?9 ?2 k# z" c0 ]$ usetup-plot3

& v( u4 }8 T# f4 Y/ r4 @end7 c: ^) N* }/ q; K9 ?+ A* u) [
# C5 t  ^' A: v) x8 M9 M. H
;;run time procedures: i; o' Q, Z* T( B

6 q, A( o& Y5 i" t: d/ Wto go
7 c$ l7 S+ x" }! T* n) M, y1 F
ask turtles [do-business]

, S1 f5 K0 @3 L7 k, j) q4 w& Dend
. G) ~) `" Q) K  m9 Q- p2 R0 m1 {& `
& ?" v  C, P" E5 S; B6 U: ?to do-business
7 t0 }: [: j, L# d5 O, P
; ~( J2 s4 {2 f
* f, P: H4 ^7 Z
rt random 360
( b! a5 c/ E( ~1 i
. \& w6 \& C: J' ^; j
fd 1

2 x0 J# a% p! l
9 V8 L6 x" o3 N7 pifelse(other turtles-here != nobody)[
& f: D" ^( K. [$ }- g# c7 v
0 K; V& j& @/ O5 S
set customer one-of other turtles-here

6 H8 L+ Q9 S0 w( r9 y4 j8 \7 C$ L7 e6 t$ ?' G" A  t1 w$ `% [, |
;; set [customer] of customer myself
: W) x. L) H5 g5 x. B: g1 `0 k5 a

$ V8 Z1 H% u) S% j+ c, Bset [trade-record-one] of self item (([who] of customer) - 1)
( l( p' T" [" `! S) ^4 D, F: c[trade-record-all]of self5 T) x2 {) x* |4 _, T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ y. s% n5 X( Q! j0 f
; `/ P' ]+ e* L( V5 Zset [trade-record-one] of customer item (([who] of self) - 1)
7 T# m( s1 q1 U0 x[trade-record-all]of customer
; x) k+ `5 i2 X# {

+ F, }7 e: e' A/ @" O0 k5 ^8 Iset [trade-record-one-len] of self length [trade-record-one] of self

' Z/ t. O% c# R& N0 b
5 m- D4 `2 {6 d2 Z4 C/ @set trade-record-current( list (timer) (random money-upper-limit))

' t$ X' N% p. T* E' q
4 V$ Y5 M$ a7 ?ask self [do-trust]1 ?0 ]/ A* M- w& M# S0 z
;;
先求ij的信任度
* y& \) A) V! a% W
- Q- |6 f7 ]3 x' Q" cif ([trust-ok] of self)3 @* X0 a; }# d# o6 h
;;
根据ij的信任度来决定是否与j进行交易[
4 {. v0 d( n5 T8 W+ w$ X; iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 o( M: K6 S$ c% v  Y
) p5 Q( @, C9 `' ~' V$ m5 ]" V
[
- _( j) p4 t" t0 H8 g  e1 Z

, L" X& }9 H$ z, O* k% C4 [0 L2 gdo-trade

4 X  a3 l, m; w* H  X+ Q3 b: P" {  D# G" O/ g* W" K1 P- _6 n
update-credibility-ijl

# M; H  k: u4 Y4 l) g5 F0 `7 w4 d" }. E. n3 P! B
update-credibility-list
* N5 x; G, C: ^3 Z
3 M0 I1 ]# {# F: j. }* X" g; |
# q0 T. j, A5 s# t5 z' k. ^, C% J5 G6 l
update-global-reputation-list

2 q: `+ B* y5 ~6 d4 a
, W& D0 ]- [8 M0 @$ Q- c& A! qpoll-class

7 R. W8 W; {& E2 k, ^, A/ {- b; X, [' r- o  `: `. ]
get-color

: t) D) _! x' @& |* I
% n. t% R2 u# z8 l" u4 D" z0 `]]7 P. p( c% }2 G  s' ~, v+ g# p
4 q/ \! P$ m2 O
;;
如果所得的信任度满足条件,则进行交易
5 X5 w+ A+ M- [( H, t9 X
( ?+ d4 k9 P8 I2 q[
. Y1 b: `9 w; e0 i4 J  q% F% n

3 y# J) P% w# Z0 Q* A, o  Zrt random 360
1 E1 v3 d" }3 c7 }/ H! g4 M# L

' H& r/ y% U5 F3 W# N6 pfd 1
3 n4 V# j* `; j% {' \) Y

' v; x/ l2 A! `% o# V% s: Y$ s]

& e. k# ?- E6 b7 q
5 J! u: M7 a, `: x# X5 A, mend

  w# M, Y- p7 `) d+ {5 _! Y0 D4 A4 d9 N: @. ~# A* n% t
to do-trust
) O* f  b+ B# w- E; C7 `, Cset trust-ok False
, G3 G5 t$ s% L! B* u/ L+ Z- b0 C. t1 X* `7 f/ K4 L! n
) g' k' X7 X1 q9 d/ W8 X; X: D1 y% |
let max-trade-times 0
1 w7 I1 o/ O0 P0 ]7 [$ w  P8 w/ p  r1 cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' ~7 O, q0 J6 t$ z# nlet max-trade-money 01 r6 w! t9 V/ e' K5 z5 N7 f
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 r' |- J# _+ j3 N. q# c! @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& ~5 \" P) N( `) A7 u$ h. e/ ~' D8 R: w; b

1 d7 J7 |% L# Y6 N' F3 `2 uget-global-proportion; ?( c) g* U0 U6 }4 N1 P
let trust-value
- S) w7 q+ q/ c/ [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)

3 M" f* Y1 h! q3 a* C$ Fif(trust-value > trade-trust-value)
8 l: s% J5 f# }- |" U* {[set trust-ok true]
* W: g# }* F7 u. c$ o+ U9 k9 }( W) Xend" l. ^  K8 x4 B+ u2 S. V; ~& @

) y! }) a3 x) x) j: [to get-global-proportion
) A3 ]# t. k. v" B5 U3 nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ M) J8 ?- ~6 S- ^3 v[set global-proportion 0]& M$ R$ f8 N" ~
[let i 0
/ ^+ Z) A% }4 Slet sum-money 0# g/ _0 F6 U' B6 O  l2 {
while[ i < people]
5 _) |  D( L+ s( D$ ~[' i' I, y+ v! ^! `
if( length (item i
: C# }1 {4 P+ I. e6 _4 [; b[trade-record-all] of customer) > 3 )

0 V% x/ N1 ]  b[
4 ~: B5 `5 V# T5 T9 v: ~, T2 f" Jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  ]5 [1 x% g* I$ o
]; Q' T$ |# c( s9 L1 T9 a+ w, _5 i
]
/ E$ z( S; U1 m+ g  A6 J" alet j 0% g. B  v& V3 N* {" {# A  P2 R' @$ k
let note 0
. N: E/ T" ^# t/ Swhile[ j < people]9 `* l! W$ V6 N0 w1 Z1 e1 O
[
! P2 c- m. P* ^9 Oif( length (item i
5 q9 j; l2 Z3 X& c[trade-record-all] of customer) > 3 )
9 C4 A# d' H0 U
[
7 Z; H  o4 f) G% R& {ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ q/ K; P7 D1 w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, g6 [, F6 B; o6 V* R& q! X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( s5 k6 R& Y. g& l( p
]
$ M/ @1 ]+ m, A6 t]
: X) ~0 k) E+ A: k: y& Wset global-proportion note' v1 f/ w. Y# r$ n% W
]
( Z( R, P/ ]  l$ T% V# U; Eend* i" y; y; i0 A* x6 r
  W& d$ H8 G( r
to do-trade
8 J. m- r! Z* B;;
这个过程实际上是给双方作出评价的过程, U1 o, w1 J  H0 d" N- j: {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 j, }6 n" n; z, D, f& U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" P1 A: j! a( v2 N$ Bset trade-record-current lput(timer) trade-record-current
! S' A$ K1 O0 d+ p' s2 a1 ?: H;;
评价时间$ A6 a" y# q, k3 [2 R  d) Z# k
ask myself [
9 Y, Q" e5 T$ ?$ D- e3 Iupdate-local-reputation
8 m; K9 S/ Y2 L" ?" q4 I4 t) C3 qset trade-record-current lput([local-reputation] of myself) trade-record-current) s3 q4 U+ p! R! f, v- {2 ]  j
]& [1 _# d6 ~; ?. _6 U- E: ]2 g
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  d/ T" [( k) H8 X( i+ ~;;
将此次交易的记录加入到trade-record-one4 `% y) e0 H4 Z  M7 ^/ B7 h# d
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 O% B) Q# H! a/ B) O! C/ i* Z
let note (item 2 trade-record-current ), _) ]8 U# `$ W. ?3 c& d
set trade-record-current- d0 ~4 m1 l6 q% _- ?8 G8 G) }
(replace-item 2 trade-record-current (item 3 trade-record-current))

$ b6 U4 ?) t3 ?' a. mset trade-record-current
5 `7 y7 O3 L9 D( s- e0 \(replace-item 3 trade-record-current note)
' P: C- _/ n% T+ h) ^# H! s4 y! ]: W% n$ v; w* t; v; m
6 @: w/ H% G" ^" S
ask customer [
( ]& X5 R' o8 t& kupdate-local-reputation2 g+ V5 \3 v0 i: @3 r
set trade-record-current
. \4 X( ~0 H$ t) H% J) e2 R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 B/ ?- V+ I$ X
]
7 _  n2 C1 I% G
: j  i& f& E& w; f0 H. K" C6 U

' N! f6 K4 m2 N; i2 v9 Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, t) M4 U/ ~, f4 ]  Z
) K+ @% a1 r& }2 c2 l* K  J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( W& ^9 _" n( t
;;
将此次交易的记录加入到customertrade-record-all
4 h* J# H; R+ ^, }' cend, e% M6 j: h# o% y

$ c. T2 A3 l+ q! r, [2 V. o  Yto update-local-reputation
5 y3 |7 ]" S" j2 G+ m3 rset [trade-record-one-len] of myself length [trade-record-one] of myself% x5 b' b5 D& u/ ~) E9 q6 b
- u. f4 F# ^7 \9 k1 ^! B

2 P8 k8 F$ y, u" L" X4 O4 |;;if [trade-record-one-len] of myself > 3

' G9 {/ I( M2 ]  c# [update-neighbor-total% A$ c# a/ G, C* A$ B2 b( w1 V. `
;;
更新邻居节点的数目,在此进行
& l* F0 M: L: X0 \5 c' B6 Mlet i 3
$ d5 |. d7 M# x% ~" V9 `8 Clet sum-time 0/ t$ z6 Q/ P7 D& y. R& C5 N' T
while[i < [trade-record-one-len] of myself]
3 _% a4 r! i2 {5 ~# B. M+ G[
( D  ~/ _. @* a& \$ j# x, B: [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& Z9 r1 p1 z4 G( G5 ]- ~5 ~- i- o
set i
2 s$ L6 Y# X- }9 K5 Q1 o( i + 1)

4 U% D1 L7 `5 d( ~! ~3 S; U]" O8 `& S- C" }2 k# b3 r
let j 3/ Z& n1 Q2 w. t# M
let sum-money 0. X0 o) N4 L. W7 ^- N$ s' T
while[j < [trade-record-one-len] of myself]
1 S8 e: g- e+ I  `" v$ {! k4 J$ c[
- q1 X4 w0 y/ \1 c4 h: f  C5 Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 r% ^: m( P  uset j) i9 g; e8 s% W( |7 G9 g/ h" V) q
( j + 1)
; Z0 W/ g7 f$ h$ o  V* E& d2 p
]" ~2 p1 P7 g. u# Z9 @6 c( ]1 @, ]
let k 3; H$ @% P% N+ d; G' J
let power 0! p- r& F0 U' Z# F: R
let local 00 J- |4 I2 t* l
while [k <[trade-record-one-len] of myself]
3 f& H" u7 o5 m. g1 ^[+ j1 G6 F. O8 g: H) j5 M. R1 L
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)
. y- M& d& l: E, Y$ A+ rset k (k + 1)( ~( e1 x5 N7 e5 A( R. ^
]% A% R" |0 H$ ?
set [local-reputation] of myself (local): e0 ]3 Q* A: h, m  O1 \
end
* c9 S' y( v. @$ o1 W4 V
$ a, n5 g$ F" O$ c8 V8 Uto update-neighbor-total' z. A- s/ V9 ]3 b1 j
- |% p* ]: @) p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. x# m- \% o% q1 Y$ ^( v8 D4 f- {/ a
& ~- Z2 k. V- W: l
% K" x$ s7 t. X; o+ V; z
end; q4 Z8 N. C( s6 n$ B0 f$ P

! c1 }& t1 H! M5 a1 M. ~" @% P: Xto update-credibility-ijl ( Z( @# b. T$ @- A) @/ o% d
4 F, ^  i1 o# O" |+ G: q9 D+ r6 J: q
;;
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。% m1 _5 |% d6 S7 l$ N4 d4 C
let l 06 c$ |. G+ r6 [4 y+ {: j0 z
while[ l < people ]0 W9 h8 C( J+ _' v- m
;;
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
$ C$ W4 c/ {1 k3 [[
6 |& P% H' t2 e+ g% [1 tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)# T1 ~5 k) f" ~( t1 k. Z4 ]
if (trade-record-one-j-l-len > 3)
. O7 A1 b0 o' p% W[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( A2 `1 h& Z% ?2 a7 F$ m& O; t
let i 3' L- ^) M5 Z6 j$ D
let sum-time 04 q' q2 C1 `8 u& M+ N# A. E; y
while[i < trade-record-one-len]
8 x- H) D  t: o2 X[# o  C; W) y! \& t! K1 X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! q; f; m3 d" j# Nset i
, i% c# x2 P  M( i + 1)
' \  ]6 `  a( ~' i0 t" F( ~% A
]9 M" E8 z8 P) U8 P
let credibility-i-j-l 0
6 v* c7 O. H5 P: w/ f- g  i! M% E;;i
评价(jjl的评价)( \; u( j! `/ ]; @1 x3 r6 D
let j 3
' {% W' l( b- H8 F# ]" S% S# y+ ^% v8 ^8 g' Dlet k 4
2 @: w! `+ Q$ t( J3 m8 cwhile[j < trade-record-one-len]6 X; C8 I2 a; p3 b6 W. D+ i# V
[
2 A2 G' X8 I' Dwhile [((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
$ m, e0 N9 d  cset 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)
- F: w) I. {' Oset j
$ F/ a& b) s; ^' h& X! a( j + 1)

' n* n4 j4 E; `]9 `  E5 s5 L! \5 w% y& F& G* S
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 ))& T; C! L5 q2 I0 T; d. i0 J
# T/ `# \& T/ [' Q" R
0 ^  p. F* _& n# U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& J, U! N$ L. j( J& F
;;
及时更新il的评价质量的评价6 \0 l. P  N# y0 n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 a% E; G9 Z3 v5 @( r$ W
set l (l + 1)
* W& W( k9 h) ]8 r, [0 i' }- \! y]
0 @5 G1 Q3 w1 D9 H+ ?* e7 B; _9 h7 Yend% Q" f( D+ V# D5 r! q; X$ s! G

+ ?# I/ h+ c6 o9 f5 R, tto update-credibility-list! q: U% P/ {4 S* J  D1 z7 |# c
let i 0
/ |, o+ D2 h, F: }while[i < people]" T' n1 A4 i" `) v: x
[
- x/ V& r' x4 n3 C3 d5 F/ R4 klet j 0
5 Q* \# w9 P  ?7 N3 W+ a9 \4 |let note 04 F7 k! Q* Z, J
let k 0
: _! t! ?+ o- n7 t;;
计作出过评价的邻居节点的数目! A2 C- H8 P& t9 ?
while[j < people]. Y4 ~1 w4 [: L
[5 x% Z" K  S! g; C! x
if (item j( [credibility] of turtle (i + 1)) != -1)$ u. k% k3 N2 g2 B8 g
;;
判断是否给本turtle的评价质量做出过评价的节点  O" }/ {* D7 ~; v' N5 t  q
[set note (note + item j ([credibility]of turtle (i + 1)))
8 e, Y5 ~6 r% Z0 |" [( s;;*(exp (-(people - 2)))/(people - 2))]
  U9 \: S* |7 D  n& a
set k (k + 1)
* z: {. Z3 w/ r# H; H+ J  ?* |]
, v8 f8 z% {6 V; Cset j (j + 1)# {- f( U' `' e2 T. \6 R
]
0 P" i; y" d/ k+ E( hset note (note *(exp (- (1 / k)))/ k)
: k' W6 z1 c& F) m1 ]4 e; c- mset credibility-list (replace-item i credibility-list note)
8 n  @. \5 d  K0 n9 yset i (i + 1)* z# M, l, N- u  ~
]
* I1 Y& ?$ n: ~0 Z0 j; Y' Q: ?end
3 Q8 |# [8 Z3 c4 _- I6 r
3 H) @0 ^9 Z: f: f. qto update-global-reputation-list
9 P# K, x8 Y$ k6 M' t( ?; Wlet j 0
) P. C% D, B0 G2 w# {- p+ r- c/ }while[j < people], p% ?+ G# u+ K6 t. S3 P8 e
[
- _- E9 l3 y" |1 c. O4 j9 ?let new 0
9 N( ~# x; y9 V2 a8 u, @;;
暂存新的一个全局声誉
7 s4 s+ z  m1 e: Alet i 0& r7 `; c  s, j' k7 l
let sum-money 0
9 l) N8 h4 M. N. K! z: b9 l. Slet credibility-money 0: O( i! E( S: b- J: ^4 g
while [i < people]
3 d5 G% X4 G7 `( s% j  ^3 G[5 ~& F( O2 f' f5 b) X8 K/ d7 b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ }, r( j& Q& Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 s7 l* ^4 l7 o
set i (i + 1)( a0 s/ I4 B% p' J
]# `, ?/ r- l/ V  @$ M
let k 08 a2 N. l8 ]7 t$ ^2 J( z
let new1 01 \+ n4 J" C2 a6 S* K/ G# ^8 t+ P
while [k < people]
1 ]4 g7 Z5 F3 l' C[
; l5 h0 m+ m7 w3 R2 Uset 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)
' f/ o! i. w1 Fset k (k + 1); q4 @. h% r: E  ^
]" ^! X- e/ C( U9 r4 `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 v& p# F& E# B! q9 H! V
set global-reputation-list (replace-item j global-reputation-list new)+ F; g( t5 [! @* R0 s
set j (j + 1)  @: E7 x: m1 J/ a1 i* W# L
]' X0 ?; A1 N# @9 ]: h
end5 G" d5 _# _: Y3 s
1 H; ?( U1 e+ P. d

6 z8 @$ G! W" n8 @! k9 v; B
6 q' S6 M& H2 p' m$ X2 }+ B6 Ato get-color% N  N8 E4 `. ]5 ]
* O7 R# m; n. @6 u, e, U( R
set color blue

% r, D% O1 z! eend. e& A6 E7 A# F( g& w: N2 U
) e% O5 m# O6 B' v  C% [
to poll-class1 j. F- |3 p! B' ?+ k
end
1 a) l$ X: O' t! Q/ X
  y( d; v) d7 Oto setup-plot1
8 |0 |8 E* k& C+ [5 Y
4 a6 s" \% B9 ]: c: ]8 i$ n6 iset-current-plot "Trends-of-Local-reputation"

0 o) D) ^# [& z: C6 v. b
  h1 e8 R8 t  l3 c) c% L5 i+ h5 Zset-plot-x-range 0 xmax

' \& R- A4 b5 U" m+ g+ G+ C* u: S6 e
set-plot-y-range 0.0 ymax
: F+ G1 Q" K& |: L5 X
end# T$ z% D' }) p' r% B

/ z- b; @+ h% gto setup-plot2. g. N8 c0 S; `. h5 A

0 q! C" K( Y) i( C2 Kset-current-plot "Trends-of-global-reputation"
' T- K6 b! d+ k1 v3 z( T
7 H2 Q! }- A8 m: A6 {0 F! K9 s
set-plot-x-range 0 xmax
* D& f$ o! N  _. X2 ^2 S

  D, \* z, X$ N$ H2 S  Q! V: H( H/ f4 fset-plot-y-range 0.0 ymax
; c7 L! ^! e7 x
end
- z( y/ J2 c# ?0 r- @( p! l& w2 Z0 J! `  A3 @
to setup-plot3! E& @& a. q; H- ]$ ^( h: E2 C4 n

1 N- ^& f+ N" k- W$ Pset-current-plot "Trends-of-credibility"
3 E1 c6 q  V. m8 F
+ f) E3 m# d1 t. Y5 S
set-plot-x-range 0 xmax
( H/ B; E% O+ L, @1 f& J
1 d$ `" j* a9 E$ R$ _3 u
set-plot-y-range 0.0 ymax
7 ^6 W8 \. g( E/ K) V
end
' M1 W& c& D# U) c! ]+ \& y; E
to do-plots
" a: c0 p; Y) j% B5 v& oset-current-plot "Trends-of-Local-reputation"9 w  W, T  A. ]2 Y
set-current-plot-pen "Honest service"9 p* z# n) o2 B1 a. ^
end
+ u( r; H" c9 u) c9 [4 ^8 {4 T" \: 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.- I9 ?/ W. T5 k
* ?) F* }7 h9 `* V! T" h) P7 `
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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