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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:
: J# H/ _, ~, N' a+ L) U& A+ sto do-business $ N4 {% t" T$ T1 ~* L* o
rt random 3608 L8 A: I* D- f$ R4 z/ y$ t
fd 1/ P3 K/ T/ s# _9 }6 ~. V7 h4 `
ifelse(other turtles-here != nobody)[' Q* T6 j0 t% R1 J; y1 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.5 e9 r' H2 q8 t9 y5 G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 x6 n, Y: A1 U$ b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 p3 y" c# |, v
   set [trade-record-one-len] of self length [trade-record-one] of self- H1 x$ X5 B/ `6 R* c1 }) L+ J
   set trade-record-current( list (timer) (random money-upper-limit)); b# F/ e1 u4 k% j4 q

' Z7 f  e  O& i  L5 j. K* \问题的提示如下:) D) m7 c& y4 ?3 U7 X. f
( S) `  @( M7 r9 K. C/ K# k/ a' y
error while turtle 50 running OF in procedure DO-BUSINESS! w9 \+ c6 k' a
  called by procedure GO
8 _& L$ ?: h4 R# X0 S) c7 hOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 L$ Y: S* r3 ^$ x) N8 O  W
(halted running of go)* B, S( V/ ~3 Y/ F9 J
8 ^4 D, }4 C. P  S2 [5 @
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~~
- D3 u7 m+ g8 G+ L- j) 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8 F. Z. B2 ^( |( D& f
globals[  @! ^; e1 i3 u$ z/ J) ^2 v- |5 ~
xmax
% E; w) A3 G+ W2 ^( Fymax
+ q4 ]1 z  j% N' y* g; \global-reputation-list
+ ]! w) h) k% o7 y( q) }
0 ~+ E; X6 r4 E9 D;;
每一个turtle的全局声誉都存在此LIST3 T  F) s  V6 @2 _
credibility-list' O( p) i0 V: U- X7 z" j
;;
每一个turtle的评价可信度
  J2 Y# O8 F2 a) G2 R! R$ |honest-service
1 k- `# x9 W4 q$ ]7 y! Funhonest-service, Z% x- a( q9 J8 _- \. N
oscillation' n) [6 g/ s# Q9 m: U5 B- e: r% h% Y6 e
rand-dynamic" [0 `! o- T1 ?7 x! z6 m
]
7 B" H/ |$ |( C% j. s' R; ^. C
4 n! @1 u# P- N1 B0 oturtles-own[
+ d3 a2 C: D. U( n' Ztrade-record-all
3 @9 i" {. V) y% \6 f;;a list of lists,
trade-record-one组成
  f' t- W, c  _; g6 L; H1 Ttrade-record-one
2 B; H* |# j# p. ~;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ c4 [" Z7 e" [5 d5 p5 D( S, m- k
;;[
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]]
+ x% J# u" ^: `9 itrade-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]) @' k7 X. R- n7 H7 {3 @: V
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- e! r  F; b# B4 [+ Z
neighbor-total- q5 [0 {/ `" Y
;;
记录该turtle的邻居节点的数目: m1 [% m# M; n8 |* D* ~! q5 U; o7 X
trade-time
8 x& J# t) A$ m$ W# k/ e;;
当前发生交易的turtle的交易时间! i3 x% m- Q7 S0 J% O" r
appraise-give
* E/ f3 \" r  A) X;;
当前发生交易时给出的评价. i3 w9 p( D% ~3 ~3 r. z1 \' P$ }. R
appraise-receive$ v% s8 M8 ?7 s- T9 z6 r7 n* L4 e
;;
当前发生交易时收到的评价, c/ f  ~8 B2 [9 }
appraise-time
( O7 ]* Y/ o- K/ V& c9 a;;
当前发生交易时的评价时间
) P5 }' |: B# }9 U* rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ @# T4 ~4 A0 W# C/ x. ^
trade-times-total
/ z/ }$ z2 p/ y$ n$ l9 x8 ];;
与当前turtle的交易总次数' u0 r( x0 ]& L, [1 g
trade-money-total9 o- H$ R3 B- J8 t/ V- _0 Y% u9 R
;;
与当前turtle的交易总金额! y" N7 [; w2 m
local-reputation# b4 T) |, v, ~) F" ~3 C* S
global-reputation/ _' m  G. P) v3 F( K1 `
credibility  W0 q0 Q" k# P% t% O3 v
;;
评价可信度,每次交易后都需要更新
/ d: n& h& q; b: g: s5 x5 m0 bcredibility-all
  X) Z1 ?  t( e: H; w) O4 r* K;;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
4 A* ^# Y' x6 S! b4 D. Y: e3 I1 J6 _8 `  ~: M6 s% B" A: T- q  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  U8 K) k1 V; V; s0 e
credibility-one' R" O2 f: L; R7 c) {0 A5 s0 t( ?
;;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
0 x4 J4 l, o; M" Yglobal-proportion7 X& e2 j) f- N& a2 B9 B) \
customer
" C' n8 r4 U3 H; R0 Ecustomer-no
2 n+ `0 D' x8 v& x( Ztrust-ok
! K& |9 E. z0 Y4 J& Vtrade-record-one-len;;trade-record-one的长度
7 K% z: P! W. g' D  i]/ G6 {4 D1 @0 @

9 I- H( ^: F: x- c$ |;;setup procedure
" F3 L+ ?: }5 u/ R, G' e5 q
; ]/ t# F/ K# m$ J0 J/ T3 j$ T( wto setup
1 ?5 E  Q8 E! ?' w: b1 `. m, p0 P6 ?3 ^* W+ U2 I. ?2 O4 D
ca

* Q7 N; c2 e+ {- e' P- t
" X: R! k" [0 L/ \9 O8 d: S% u2 Qinitialize-settings
3 k2 C! N5 `2 \3 B6 W1 u

9 n8 o. w" [; V8 f" @6 j$ E- g: d$ Gcrt people [setup-turtles]

, K" \! W0 R# i& l  u
& Z2 s9 t6 I7 ~' c2 p1 Z7 h: Ireset-timer

. l' R$ d" O# L3 H
1 [) ~5 ^0 H  D4 I3 D! ppoll-class

, K9 a# l* t. Y6 R- \: Z6 m$ b- E- [
setup-plots
/ D, ?! G7 {7 K2 ~) g' V+ k# A* O) ~% u

# `( U' k, g0 mdo-plots

7 d7 `% B% A" }' f4 @end
7 y, S/ U4 X* q/ D8 G7 ^! }8 N7 Z2 _0 m; ^) ~/ H# c# W
to initialize-settings" H- }1 j* C5 q$ F: ]

8 D% U8 L; X% \set global-reputation-list []
! ?$ N: ?  o% J0 N; G" x# P3 O

8 D0 J) E. y7 i- f7 Z7 eset credibility-list n-values people [0.5]
5 c1 R: _: v7 Z4 A3 Y! {( r

+ z( p& m" ^, l+ J( Aset honest-service 0
0 [& Z1 G7 q0 K
( i8 E5 G7 K; p3 e% \
set unhonest-service 0

8 ?  O, r. C" _+ b) \$ f* Y& q& I2 g& d. U$ n# ~& i
set oscillation 0

; V, D7 o. Z# F' |) H# X4 ?' H, }3 ]9 B- i! i
set rand-dynamic 0
2 v6 A/ H# K5 f  j- W% d' V5 Z
end
7 @% k: e* ?; d& x
# q# f" n% d6 \to setup-turtles
# T# X7 Q; z* {& E' r; B) n/ {6 Oset shape "person"
0 Z1 l1 C' q" l2 F/ zsetxy random-xcor random-ycor
+ ^& _( Y1 E" b5 tset trade-record-one []
0 E1 A4 e' L3 M7 w$ g8 U/ W, o
( q7 y( P: I- R/ E6 M0 q5 f2 Z
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ X- t$ i" V2 X5 h
7 X2 P. x! R0 E0 a4 e
set trade-record-current []
: z+ S$ ^5 T9 u7 K) T1 F" qset credibility-receive [], U2 H" @$ x7 c. Z
set local-reputation 0.5
  n+ b# U- `/ m7 Cset neighbor-total 0
  t" m2 b4 m" ^0 oset trade-times-total 0, d- b! Z# ~, l+ C9 _: g: f
set trade-money-total 0. q7 x% U+ p/ [0 ]$ n5 v5 W
set customer nobody; I( }8 y* b2 I; l
set credibility-all n-values people [creat-credibility]
2 @" V) y' F! l+ wset credibility n-values people [-1]
2 D; _/ g% |# Q  Z, Sget-color6 \; H' a# c# _( M

* C+ x7 p  n9 D8 K) x# M& Kend0 y% F& c4 b/ m

6 k' u2 [/ m' L# F+ @2 j; Rto-report creat-credibility
+ k0 q# W* ^, r9 kreport n-values people [0.5]
# u+ j% f6 e' e  F0 Nend4 E0 r7 h5 N4 l1 u
* P7 ?2 e/ t+ U& \/ N) j
to setup-plots5 H" g- `- ]% p* G
5 C* c$ L3 {9 l6 j. ]2 Z6 Q
set xmax 30

( V3 ?# g% W; ?, u" B& Z
6 Y0 e) I: I/ S! K! w3 X* I5 x- xset ymax 1.0
5 t  P2 m; c* Y3 I6 V
+ ~" |5 @+ ?3 I- u8 u
clear-all-plots
$ g1 l1 u3 ?" @& o/ T5 F

  ], O; @1 J7 k, p. [) d' vsetup-plot1

# n$ n6 p. c; y1 F( p2 o9 Z8 x' r$ O& P' R
setup-plot2
" n( t5 Q) c& {* M3 D- K6 C9 `

8 a  J% L% C' C' z, Esetup-plot3
$ w; @2 G" s4 y$ ~
end
3 X2 z0 a4 {3 ]: @& D. w/ f/ p0 D6 u- [2 a6 C: ?  o0 Y
;;run time procedures
+ G  |9 h( w( p( [6 u( |% m) L  N7 S8 S  G. E
to go
, k. p* i& M7 K3 I  d6 m# u
  B( o( v0 }# r8 |ask turtles [do-business]
- I8 v* Q$ |3 W
end
! J1 e4 q- j( z3 B# K7 J% e8 T* f5 v. k  p
to do-business
0 u( s7 W. w7 F2 c
* Y, q3 N. W% d
6 b* H+ T. }5 U. ^% O. c; M
rt random 360

3 O* h9 D- w4 O4 s" W; J4 f5 y7 }0 d% U5 x
fd 1

1 Z  J' v4 {$ I1 _  b
8 o* ^, h# C8 x4 L8 [1 N# Z& lifelse(other turtles-here != nobody)[
+ h. c- H- e9 U8 l

, C; h7 s/ p' _- j! e8 Kset customer one-of other turtles-here

9 G% r' t* [  q
5 s" w) q' l+ G9 T2 `/ |; ^  H;; set [customer] of customer myself
4 |; V: v& |0 A5 b" j* `; R' r
! `3 o: p8 o8 F! p: b( J2 a
set [trade-record-one] of self item (([who] of customer) - 1)
1 K* G  Y7 o) r: x[trade-record-all]of self5 h8 j  M7 ~, X8 m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 J, k7 r4 G" k& U9 F$ n
" A' n) `$ U4 }  _; Wset [trade-record-one] of customer item (([who] of self) - 1)
3 p( J/ E* t9 x- Z* X[trade-record-all]of customer

) _; g+ u3 k8 J) G
& z9 Z, W9 N( Z' i! H& C4 Q/ L7 Qset [trade-record-one-len] of self length [trade-record-one] of self

5 O6 a' X& L2 K$ l# g
& R# |/ @9 z6 T: z( s' uset trade-record-current( list (timer) (random money-upper-limit))

4 [# `4 m3 U- i7 z1 x; ^. [  P8 m
9 F2 Q1 |8 G; ^' s! \4 n, Xask self [do-trust]1 ?$ u! Y1 ~/ m. ?" p( _
;;
先求ij的信任度
0 k# J5 S- H6 K% K  f- K/ o
( K5 r9 ~( |; u- jif ([trust-ok] of self)$ i' b- g4 l' c
;;
根据ij的信任度来决定是否与j进行交易[8 q9 R2 ^3 {, n5 b  J% q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 a9 |; J, ^% K/ D
$ v+ v, _! g9 A3 I4 [
[
$ E' R+ R+ _3 Z# r" Y
; I6 y( Y& Z* g3 Y' N5 @
do-trade
1 ]( f0 [- w' k9 x1 Y) |8 y1 r

5 v# \! o- G" ^& _update-credibility-ijl

9 M# ~+ a4 j4 d5 x
: o4 `% p6 T, {" [update-credibility-list( P* ]2 L; Y# h$ }

5 v6 h, c! l) j( v. u1 P6 N9 a& k  l( e2 G) x+ d$ I
update-global-reputation-list
+ |2 |# Q" U0 v) V$ P  u
9 n- V- N) v7 p8 R; c; Z
poll-class
1 f, p: e4 X' F, ^( A

1 t6 @, m) U! ?# ^8 iget-color
7 }4 `1 Z& e+ z& h) }/ S; u
, R6 ]/ Q+ w4 ?) @0 I8 K
]]
+ P+ s7 i5 I) T1 n# B; }! f0 I0 S
;;
如果所得的信任度满足条件,则进行交易! Z* B. P% X' H6 H
6 I, h, W; P+ m2 w' Q
[

, R$ X0 N% a+ k& ?1 H* y6 d) a5 }  S8 ]+ _
rt random 360

/ R' Q2 V& F* D3 N, [; _0 h  k/ \8 ]7 g) a8 d
fd 1

% T- U, |: Q( A5 p. a/ y& A( S' b9 ~& Y! B1 h  t
]

$ O* e! w, c( l$ J) x( G% i- N" D% e4 p' V2 h9 W5 A1 S
end
' f: |: M/ r  w" z: f: b! S
" v0 H1 [. f) }1 ~. I1 M3 j- \
to do-trust ; r/ L1 X0 {* Y- N4 n! `7 x% R
set trust-ok False2 G0 A  m0 V- ^! t

2 p/ e( z9 Z0 \" [3 f, Q
# }$ {9 e" k2 v6 O
let max-trade-times 0
/ m' u" L; J+ ?+ Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], d5 d5 a) t0 Z- K: i+ H
let max-trade-money 0$ @6 a  B6 s9 D4 y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ M  K  M" R& O$ e2 B; @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 R! r: g1 u& J6 U

3 V- g0 t9 T5 _: m
8 Z9 b/ t! ^/ ?& ?2 y# c' ]# Q' R* E
get-global-proportion
4 H8 q0 D% p$ Ylet trust-value
8 b. q( S% y6 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)

1 j' k8 d) N' z! jif(trust-value > trade-trust-value)0 G  q0 c3 Y7 Y5 r; j' O' |
[set trust-ok true]
, Z6 [& t8 R' G  T& Qend
1 I. n7 \2 ?* G+ @  `
; @) T. U, O$ ^+ Y8 J/ L) Dto get-global-proportion3 G1 g$ L4 k8 w6 ?$ X/ T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ h+ y# l8 b" O1 k# k! R! |
[set global-proportion 0]7 ~# M4 B1 Y: E4 F$ Q
[let i 02 C3 m; F9 v: ?/ t
let sum-money 0
9 C* ?+ L: \$ M0 Ywhile[ i < people]+ w# P* b  Q: x" l6 L4 D
[# X! z1 Y7 r* C% V8 c/ s
if( length (item i# t# M. Z7 ?9 s. G3 ^; l. P4 E% j
[trade-record-all] of customer) > 3 )
; b* V! B! V$ v' n- Z
[3 x, z0 y, N3 y2 U4 ?. r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 M0 ^  ^. e# F, w
]( G2 K7 M6 y5 K# M$ j
]( k9 q9 w  p4 Q) L$ S3 W. \: P  d& X
let j 0( o; {' z0 ?6 d" c7 b
let note 0
; j: I4 V/ ^0 F. G" v2 \( dwhile[ j < people]" |6 c8 q+ X2 F8 }: i+ I0 L/ s- `% j
[
1 T) n4 X1 L" s6 C7 g% yif( length (item i6 F9 g" U2 w2 K: K7 @5 b7 n
[trade-record-all] of customer) > 3 )
8 S/ L; `% n, A7 u8 V
[* X" `- M' ^: a8 s: O. G0 a  F  D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& Q+ W" |- ^& Q7 v
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ `# I3 d' W( D* \# M  l& @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 o, c+ s$ Z: e
]
: X! j9 R9 y  r0 h! M! |% h5 Z]$ ?) f) Y9 _. _' H7 C2 y
set global-proportion note
2 c; l6 A! h( H3 X1 X7 [9 F6 K% S]
7 M$ U3 K# L) t) cend
! a6 n" ?: h( b& w; D; C8 H: @: b2 m6 T( a3 Q8 l9 e
to do-trade1 x& [1 G) \3 P7 S4 k
;;
这个过程实际上是给双方作出评价的过程
- {* r0 [# X/ l8 Z6 d! @! fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ y9 M1 I: J4 Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 E/ `' R* O: G) @# }" O# y4 Xset trade-record-current lput(timer) trade-record-current
/ p- ]7 f5 A9 u8 S) K' p1 s;;
评价时间2 v9 {7 w" Z  `. q
ask myself [
. a  l  Q4 T* U, W8 j3 r2 gupdate-local-reputation8 d' W" y$ h, b, W# J& `
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 u. T8 C7 U$ }]" d$ q+ ^3 F  ]& K$ {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. {4 [3 j8 ?8 v( N& G$ T( n
;;
将此次交易的记录加入到trade-record-one, T" X) I( ]4 x; V( I) \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 z  u4 M( ^. j3 D( D9 V8 y8 blet note (item 2 trade-record-current )# D; I" f8 w0 R4 F' K# z
set trade-record-current
- z, {- M2 _) V  T0 ^(replace-item 2 trade-record-current (item 3 trade-record-current))

0 R+ _- A& q$ d" k; ]8 zset trade-record-current
4 a3 P. E, g! v: `% K(replace-item 3 trade-record-current note)0 h! g+ u- m5 X; ~
8 ?& _: @% Q( k# P8 G& o7 ]# ^! `
9 U/ P+ g, U0 w" S- ~8 g$ H
ask customer [
- N9 J0 z6 l) |" r- jupdate-local-reputation
% M0 b& C/ t2 ]' D( Dset trade-record-current
8 J: y( V, _; S; w! m- ~, s9 u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 N4 t2 P" ^  L, D" v
], F8 e5 s9 U# M4 b" l
7 |( w3 M4 \' Q
7 g* t" y  C2 @& m* E. w' ~  @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& z: w2 {4 J( w

9 ~. L7 b$ D- m6 k+ i+ ^$ R5 o: P7 pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ Y7 ~) k9 ^$ d- L+ J;;
将此次交易的记录加入到customertrade-record-all+ x6 ^) ]" o- L$ {1 o
end$ c1 }3 \5 |' s9 \) \7 W

- Q6 ^: m/ j8 _# l/ bto update-local-reputation1 D' k9 E$ m. x. n3 u
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 M6 S( p- V+ M* h0 e) u( [; R! s7 v1 |
0 U( _) s* z6 w6 _( r1 ?1 ]
;;if [trade-record-one-len] of myself > 3

( _% v, |, x) l  t7 i0 X# vupdate-neighbor-total. R2 p6 Y2 [9 j6 Z: F1 f7 U
;;
更新邻居节点的数目,在此进行, j7 X. h% A4 @, a" X
let i 3* d0 ^4 `- ^; t' S
let sum-time 0
0 x" {" n: Q+ \+ _while[i < [trade-record-one-len] of myself]
9 |, F' K9 y( E, N[
- `+ i1 b1 ^7 _$ e: {$ Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). J% l5 _% N" ^6 R% q
set i
; Q1 s6 }* L& |  A7 w* r( i + 1)

4 F2 w4 z9 L5 b]/ a& b% ^$ Y& N9 q- p$ X
let j 3/ C  {0 z3 s* O5 _: L
let sum-money 0' h# w+ A- t6 Q7 Y* @8 I1 I/ G1 w
while[j < [trade-record-one-len] of myself]
0 e0 |  q5 M! M( Q  O[
$ r  w% m2 Q7 ~+ h# A0 K; Uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
, S/ U+ C: Y, V: C2 o: p2 x+ ~set j; _/ z3 R  X$ x
( j + 1)

) t3 G+ L7 t! C+ V& u]; O6 x! ^+ {7 q# ~
let k 3
1 N, k* `: v% t. H0 h" _# k4 qlet power 0% @5 o6 l1 K+ s; G/ L1 a( S
let local 0
9 N, I4 C5 H, j$ Q* D( Rwhile [k <[trade-record-one-len] of myself]" d0 Q* Z5 z  Y- n; S
[
% f9 Z- D+ _2 U0 d0 u  G# [: Xset 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) 4 X9 D0 |3 k) q7 B( m  w( q4 L3 ^' e
set k (k + 1)9 A* ]" K" _6 i7 l  Y$ M
]
+ e. k1 w' [+ k# Gset [local-reputation] of myself (local), }. o* w1 P9 ?+ \& l6 ?
end
8 W/ b* M3 m" q
4 l. b! g8 L: C5 Qto update-neighbor-total
. A% j0 L4 S* n; L
  [* N4 z3 F" M3 Z7 U, O" Q1 z* M3 uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], X- R! @: Q2 e: M' l

1 D5 d. _6 h2 n+ M
: j* N+ m: |0 m/ U  |
end2 c3 M: f: C! @
) e( ~) w* f* A, H; s# a0 H- N
to update-credibility-ijl
* v- j9 v) I, i1 l
* ^' }4 Z) T/ Y4 l;;
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。
8 g4 V9 f' e" {! @* plet l 0: p0 R3 {* N3 U+ R. k
while[ l < people ]
% w7 l) U' s9 J0 |3 f" g: N2 p;;
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
+ o: ]6 Z+ |6 _[
$ F! P2 h- C6 F/ `* Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- C9 P+ F7 ^, X( Rif (trade-record-one-j-l-len > 3)
, F1 H+ q: h) w3 e[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-one2 X0 ~4 w! y, q
let i 3) L  u8 L3 K/ {( @
let sum-time 0
1 j2 x0 c3 |; T6 ~4 L. swhile[i < trade-record-one-len]
2 m0 I  b! \: H* n1 I' M, }[' T: c* H: O+ u8 f8 I. M6 w! x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ f0 S- }1 t. F" p7 Mset i$ G, s% j1 s$ v9 c) b: d9 ?
( i + 1)
* {0 _3 P  e; X' z
]3 M- `# [4 |1 d. t+ G
let credibility-i-j-l 0
' ?8 u+ Q2 F9 Q' G+ _. ]2 E. z;;i
评价(jjl的评价)- _# ?/ i, M! k- U( Y) u
let j 35 z) O4 o, `' ~/ K
let k 4
% L  ^  D: c- k" A4 T7 Z( K2 M7 jwhile[j < trade-record-one-len]# B/ B; p/ Y7 {! y
[
" j' I, E9 T$ z% F8 ~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
; Y' K* h* P$ Fset 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)
& x- w. \0 @# U1 Lset j
4 L+ d4 \& E5 p( j + 1)
& r7 H3 q+ k  S, l) {
]/ N' `+ ~3 p% m, W7 n) C' [7 _
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 )); ^4 l4 J2 t0 i* _9 F& t7 ^2 e2 @. i
% e; c) ^: J" R& E/ I& ~& `
* y. B3 r# S! b  Q* ]- J& ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ F1 t. V$ I8 b9 h" p;;
及时更新il的评价质量的评价
% E2 s. v4 C9 Q3 U$ t" nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 y$ p) {9 n  N/ |set l (l + 1)/ v% G" {. i; K3 t9 T1 m' {; f
]
" \2 ]) D8 l- [9 v: ~end
' w9 W$ A" E3 X: o( g
& t' w; [1 C  {3 k7 e& jto update-credibility-list
6 u, ?+ _7 l1 z( a+ Plet i 0
8 n5 O0 R- f/ N, J$ O4 Y1 Ewhile[i < people]
0 }! Y4 _! D  g6 n5 e[, e9 U( b, X7 P# t- n! P
let j 09 y0 M; A9 f: `, ]8 T7 M: v
let note 01 [2 S- c* S1 H3 j/ `! `0 F( f
let k 0% _6 D% g, s9 A! a1 F* \  o
;;
计作出过评价的邻居节点的数目! Q( I- X* _# B/ g8 D
while[j < people]
# y8 C: z0 _7 b4 r[
" b# x* N) ?# @4 Gif (item j( [credibility] of turtle (i + 1)) != -1)! S( f# |* ^5 I$ C, i9 k. D5 P
;;
判断是否给本turtle的评价质量做出过评价的节点
0 t! L  a8 E! s8 l  w& |[set note (note + item j ([credibility]of turtle (i + 1)))
4 ?+ H/ H7 o. F3 _! k" l;;*(exp (-(people - 2)))/(people - 2))]
, V9 W5 c0 z  c# z; |1 _
set k (k + 1)
" \8 j4 u3 U: H0 Y/ v; L# n- @; }]
3 R8 c* y" M3 y8 ^* Z: bset j (j + 1)
7 d. {, @5 x2 t& o+ e]
0 F1 Q0 |; ^( f. i( jset note (note *(exp (- (1 / k)))/ k). n8 O. S/ M7 R2 n+ b. X  Q
set credibility-list (replace-item i credibility-list note)& [# n; V- S& J& I. y
set i (i + 1)
) i3 w" T1 \2 I]
1 f% K* m* ]. i/ y/ M' |4 Z2 ]end
1 n( q% a, G; |9 ?, ^% [  Y2 D( _7 ^1 r6 ]) T8 \
to update-global-reputation-list) k/ M- A* X- N# i* f
let j 0
* o& ^2 p7 r  xwhile[j < people]/ \' T; Q, z1 A1 R% T' j- `
[
+ H! p7 l1 v2 ~: v8 c, |* t9 Zlet new 07 U; j* J- H/ J1 j! V& d) h
;;
暂存新的一个全局声誉5 l( y2 y8 s4 m1 p0 x2 R) j  S
let i 04 w$ E3 P! p9 R& K! D* _
let sum-money 0: Z9 t/ v) U  y
let credibility-money 0, m, x8 K# D7 b" K
while [i < people]
; |% }7 t! _+ Y1 P( f5 G+ {0 d- A- \( R[6 Y' h! @8 S+ M- X/ Y; ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); T& L4 ?  t6 T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 e2 {3 K' i  B4 |' @
set i (i + 1)$ K( Q+ u+ e* R" N- B
]
+ O5 h3 i/ b! E# l; U! slet k 0
0 n4 ]* U5 M6 I3 s* G6 H2 Qlet new1 0
9 r3 H$ l2 R! x$ ]) J; B* Jwhile [k < people]
+ n% x7 q& m7 W* L0 U  ][
9 B# S  o* T  |: jset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
$ c8 B3 c& W. h+ {1 Xset k (k + 1)4 Y+ O8 e' k% r
]" o/ M$ m. G) X5 B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) [! Y+ G$ n0 `* A5 P
set global-reputation-list (replace-item j global-reputation-list new)$ H3 m8 e/ a# k) l
set j (j + 1)/ `; `: e1 \7 z: s( }' t* c
]
) p6 n# r5 ^9 U9 V. E# {end: u9 {1 ?3 \) r! r, K

5 x5 ~  F$ [5 ^& G1 `8 h2 f) b( [2 @! B+ L& |# k8 b+ s

" P( w5 I4 A- p2 |" p. @to get-color
! E. \! g' j& N5 D5 w
( H. x/ Q2 J7 Wset color blue

. ?/ J* r4 X4 U! r$ o6 q, i+ o7 iend
/ ^3 m. d* r( P
5 o, }0 |" ]6 ?  c0 Jto poll-class+ R7 _% ^. p7 Y
end
' r" o* B1 v0 a8 x; N: _$ h+ C
2 i' V5 B1 f' a* V$ k; M) Gto setup-plot1
: _$ R5 i- y9 W$ h! q
: M. E* [% y* z8 S1 O6 C% ~2 v$ A/ X$ O  Bset-current-plot "Trends-of-Local-reputation"
: i' p$ O: i- v6 F% x8 W4 H! K

# v/ X$ c6 g+ Y; ?  _9 q6 Q5 _5 Pset-plot-x-range 0 xmax
9 y' I- _5 G, P5 T

2 d5 ?2 k$ u& V) W. dset-plot-y-range 0.0 ymax
+ g) q6 K5 t" I5 C( x# z
end
  C2 a0 {+ }9 H& G; ~7 M8 M
! B- {+ W2 `6 N3 q2 P: f/ p; Q+ tto setup-plot2* ?) g" Z" B" L3 P3 G% c2 v4 O

' [1 ^9 D5 k8 X& |, v  Aset-current-plot "Trends-of-global-reputation"
8 }" Y: e7 e" o2 F' s6 q- M: v' {
% `9 R2 n( ~. H9 X$ I* G
set-plot-x-range 0 xmax
, X) f4 Y2 j# ~
6 X2 {! P, b2 s/ B$ c
set-plot-y-range 0.0 ymax
; _3 }6 l/ H' v$ a( L3 L; c' V
end
1 e1 h; Z% r) i$ ?: b" u0 [0 V# G2 w/ r
to setup-plot3! }; @3 m2 m7 w

7 ?+ P! I4 u2 G( Q0 N2 qset-current-plot "Trends-of-credibility"

0 v5 x  D+ ?* h6 o7 m% r' S3 A$ |7 M& J$ g3 x9 d4 ]; O
set-plot-x-range 0 xmax
( E+ c5 C) X+ [+ W
4 j0 X  i$ |- X. z* _7 Q
set-plot-y-range 0.0 ymax
  Y8 g  t9 K8 k, l9 O, J
end
: x5 q/ ~4 ?  U8 V0 [/ |' {3 m/ A" E( o3 ^" P5 h
to do-plots0 ~+ W" s0 g+ h8 `% h; I) f
set-current-plot "Trends-of-Local-reputation"" R  f) a% E2 e
set-current-plot-pen "Honest service"$ T# K, w$ Z& ]" r6 h( s5 [0 T1 K  U
end
. g' G5 v6 B$ i: }5 |9 a
7 ]. A7 h, I( k[ 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.
2 r, a( D" `" [! c7 b/ v, r) L; n7 s) C# ]. G) s+ q# {
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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