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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:' q$ W3 _* M6 u3 V# O
to do-business
8 i0 m0 k$ P# r; Q1 v5 J rt random 360  X* y6 N- f8 v* o* h
fd 10 M9 G) R* w2 l- I. q+ x9 o( f
ifelse(other turtles-here != nobody)[
( |- D4 D- ?* u* j2 v1 m6 S8 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.
9 X9 x# G! t5 W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * o% m& F8 {) ^1 u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 a8 P2 G0 |' ]' }
   set [trade-record-one-len] of self length [trade-record-one] of self4 Z4 _3 i" v8 f
   set trade-record-current( list (timer) (random money-upper-limit))8 B1 `7 }/ s% g1 c8 H( E

. w* f3 x# s4 I0 P5 y& h4 c问题的提示如下:- L/ K3 w3 \7 E# D
! M4 {% c- D) R/ {% K' c
error while turtle 50 running OF in procedure DO-BUSINESS
$ W, t0 P) p. C- G1 p; E, y+ U  called by procedure GO5 p, q( u) h  @0 b
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 z$ t/ _. g8 I' L  o2 E3 N$ D
(halted running of go)3 w- d% E& x& S5 a: ?# Q

0 o1 a6 h$ G. B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~~
, ]" L( G, {2 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
2 Z" R( d. G5 b/ {globals[
+ u5 M! O# J" \. W  B/ Vxmax" [/ F: f4 i0 ?: E3 f
ymax& ]' q& `! x& m0 d- e8 d$ X
global-reputation-list* a5 v1 t: b) J# f9 v' a

$ e) P: ~, x: b+ r;;
每一个turtle的全局声誉都存在此LIST) P3 Y9 ~! Q& e& X# y$ k
credibility-list& o8 y& x7 v  k+ J" Q7 n
;;
每一个turtle的评价可信度
) n% \1 A# i7 k! w1 z0 D# k! Ghonest-service
6 j! r; D- c  Sunhonest-service
  E2 q" a, s7 Y/ L- c0 ^5 ioscillation
+ F0 b1 _, X. r8 B# u/ hrand-dynamic6 l) g- D2 m8 j1 o9 Q3 i# g
]9 I" ~3 N! z& G# z8 q$ K

9 Y3 d4 }. n! B: S! X6 yturtles-own[
7 |: |9 }* y; K- @trade-record-all+ U* d/ ~6 C" o1 t* \: n, m
;;a list of lists,
trade-record-one组成' M" Q  H2 u% _
trade-record-one0 v4 I7 l% [) _9 a( D6 L! k* W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ [* ~2 W3 }1 Y: ^; @5 C5 U2 j
, o) e; M4 i5 }, W  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]], ]( }" b" [7 u( w5 v2 w. z
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
/ W/ P$ v, x' w( X. Mcredibility-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list5 |0 c4 v' _; }3 B) p1 G3 G/ N4 M) P
neighbor-total
: y+ r- u0 y* N: E/ B;;
记录该turtle的邻居节点的数目
" t* F* U2 V  ?trade-time
3 R6 A6 w% q. z" P% N" ?9 y* {;;
当前发生交易的turtle的交易时间  a, v+ ?0 W) Z$ h
appraise-give2 _: F6 P: }( E* i
;;
当前发生交易时给出的评价
* `$ Z) N) O# Mappraise-receive: Q3 B6 m5 i7 \9 K; w( N/ e
;;
当前发生交易时收到的评价
# |4 F5 R7 V/ N8 ~/ E/ rappraise-time5 G. D% X6 [: q; r0 ]& b/ N% q
;;
当前发生交易时的评价时间$ x( C+ e+ j- K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ i9 Y/ ~1 `/ n/ [( Xtrade-times-total5 @: }+ E7 e, h- `) k
;;
与当前turtle的交易总次数: ]; k  s) G; B6 j3 w
trade-money-total
; ?7 j) a7 |3 s4 N% N$ L% |;;
与当前turtle的交易总金额
) B* B  ]+ g. V2 V$ A4 ?; a2 Qlocal-reputation
% [7 O# [3 c' g- p# w0 h. `global-reputation
) \% _& V' u( Z% y# c$ r- V. Vcredibility
& W2 H! N0 [. b3 R. d;;
评价可信度,每次交易后都需要更新
- V) b# K, Z2 V% dcredibility-all
& c  m0 T6 V* G6 u;;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 P# S, U, [: M8 A
' s* L. \$ D; b6 P) m;;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0.51 I7 y) U3 X% A! N) W; D
credibility-one# Q% {, O3 z! G( X/ D9 T2 q: x! E. K
;;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
* R( n9 Q/ _) c% P$ H8 A9 `2 K& Hglobal-proportion: E* q  U' G# P) P
customer
' M6 l8 h6 G& Zcustomer-no* V2 h+ u6 |6 }/ B' b. V  Z( i
trust-ok$ i+ q, Z4 K- Z3 q
trade-record-one-len;;trade-record-one的长度
# B* n+ N( o  y* l]
' s, r, L3 L% u3 Q9 k, ~+ `6 {  M6 S2 W* \/ w) i
;;setup procedure9 r* ]) i; S' @
/ x4 [2 w( R3 F2 Z# E6 ]4 x
to setup
, B* L) D# C% o) m* I9 l/ B0 i" P& b" q3 M( ]
ca
; l' n' b3 g1 i; a$ s) s" i4 u
7 n+ [; P. H- a+ c! K
initialize-settings

% D# c  G: [! C+ g0 A' A6 _0 [$ J5 g/ j) R' b. x3 O8 X1 D
crt people [setup-turtles]

; L) N3 n1 m1 G1 X% {  r$ i9 g1 D3 V. }0 d
reset-timer

$ Q7 N) `9 k( y- x) D$ X" O: e. C5 T2 j
poll-class

# S+ \% I% J8 r1 P
5 F, O5 J% h; h' nsetup-plots
( J5 j0 l6 H1 V8 @/ [

5 H* T) q% Q& f) }& B! tdo-plots
' |* [' W1 @( K* K
end) [1 O8 `3 u% g
/ b/ w$ _2 ?& A9 \
to initialize-settings" y5 d+ r5 H$ {! M

6 }- |2 M- J2 p  @! ]1 sset global-reputation-list []

: @* [8 f* _" U6 V! ?3 _
1 r: Y. g3 H/ y! J, f2 dset credibility-list n-values people [0.5]
: j! G% Z' e6 X
, }: x" J3 t: ^9 I. l# I; v3 R
set honest-service 0
* C9 M7 i# r* q
' [0 @2 C0 J2 d+ I& m
set unhonest-service 0
  u- ~- I0 ?0 n. d. L4 E2 K

2 S# d( ^, U4 C$ Tset oscillation 0

, V' m, X% j# p5 J2 @
2 N- J  C; O8 g6 bset rand-dynamic 0

9 _, }& t0 g6 l- P2 q3 R2 K+ o& F4 cend( b$ @# U/ ^  X/ ]0 Q2 x
5 J. Q1 p0 H  G/ o4 x
to setup-turtles 8 S7 ]7 l2 t% \( {1 _2 G* }/ T6 k5 l. Q' n
set shape "person"
* j  O3 _; J9 C0 y6 R  O+ @setxy random-xcor random-ycor
/ p& y1 g8 f6 z! M/ c$ p1 @set trade-record-one []
" K' w6 s: P" K' R3 G+ ~

3 D+ t" \1 ^$ C7 |set trade-record-all n-values people [(list (? + 1) 0 0)] $ y* X* b  i' X7 C3 L) J8 s* \

6 m1 G2 i% F+ O) a( h# s* p; |set trade-record-current []
2 h. J% \. \& T, E8 ^set credibility-receive []  D: i, m) C' s
set local-reputation 0.59 I3 a* ~; V' @* f$ V
set neighbor-total 0( l8 T/ O! k/ G5 h* b* i% V( H2 ~
set trade-times-total 0
& E2 D4 v4 U! C$ z, |set trade-money-total 0; v9 v4 z- V1 A( @
set customer nobody* v( f2 d* T1 t! {. @( x, ^* u) H
set credibility-all n-values people [creat-credibility]
% W  \2 }( I9 X$ S: N' {* t3 Q( kset credibility n-values people [-1]6 I5 ]  p! H( d2 I" y
get-color
: J# ]! Q" }2 Q$ O; g* [2 \' M

9 g( |! Q# M* j9 b/ ^2 d" Bend
3 d- e0 q% Y, f% X# w: f' P( p- S& s. _+ O
to-report creat-credibility
1 m( ]3 _) {& `. }5 W9 C' ~report n-values people [0.5]
' A8 }) O5 z$ L4 Rend
2 s$ r, L" |+ C. Z- X% U5 t- M+ m& X1 J3 z) |+ }
to setup-plots
: V0 K! J* d0 I# P) x
2 x& Z2 [" y6 Q, K  z; }set xmax 30
( \% [! N# O; V' t% e

9 _* E7 o- a9 A: nset ymax 1.0

$ \6 _7 k* w0 U' y- G
( P/ z0 x/ s$ n) Yclear-all-plots

9 K5 A* M1 x" Q
4 d; G4 Q& _! R; l8 nsetup-plot1
8 b  A3 c1 Z6 X* j+ A7 j+ b

3 ?, @7 f! s% L! C, T' asetup-plot2
* m" z  }3 k! o8 c0 B. p, u9 y
/ _0 M. L0 d+ e' f' T0 x- P
setup-plot3

  M! S6 X. [% L1 N* p5 [$ wend
# V# W# E, G: F, m9 a& m. C: m; |! X, o  N0 m6 p
;;run time procedures; {# A, X4 c) W( u

6 Z0 ]" S. N* @; V0 W' a! @to go
, t3 _; U$ r: K% o% A! c
5 Y9 q  _  |( M" r6 Z# [3 Y9 Fask turtles [do-business]

7 S8 }& P6 a5 o/ ^) v+ `% pend
. {" |: G) a1 G+ a- K! B3 W5 a2 r( [, [. I, d
to do-business
7 J) n2 m( a# V* W: P  V

7 w9 L4 w' u4 U( [* r* v8 v- a5 r
" p1 a6 P1 f% P1 yrt random 360

9 h6 d9 E: s' N) N
7 @( _  ^( T+ r- ?( K1 yfd 1
' i( Z8 D8 D7 R) W5 U
. {& v& l2 F1 c
ifelse(other turtles-here != nobody)[

5 `+ h" s$ `. ]) u6 `! t
9 {& U5 C8 ^, C. e/ L& k) Nset customer one-of other turtles-here
' f" Y# j5 R0 L4 N  k5 D9 Y# i
. z6 {! `) I- o$ b% R8 \
;; set [customer] of customer myself
& o- W8 D4 i, u' a  p2 p
$ v" P' n% S" W) v
set [trade-record-one] of self item (([who] of customer) - 1)
: u3 E. D% B/ R9 y3 n' X[trade-record-all]of self/ R( R/ i0 Z7 z  ~+ B+ l, Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ T" ]/ H+ g7 ^' T8 V
: P% Q0 ~  C, H, Q8 Z  Z
set [trade-record-one] of customer item (([who] of self) - 1)
0 \7 s! O! o5 i+ Y2 T8 v# L[trade-record-all]of customer

! }1 j5 e& r3 t9 s! B5 `4 {; f/ _5 n+ t1 k
set [trade-record-one-len] of self length [trade-record-one] of self
; y+ T# |' Z* ~! `) L1 `
$ K3 H# P9 e" G9 |
set trade-record-current( list (timer) (random money-upper-limit))

7 _% O2 L- [" S, J9 Q9 ^
- ]7 u# x1 _% N# |* Eask self [do-trust]9 h: H+ Y+ J5 }6 H
;;
先求ij的信任度
. j$ s' Z/ x2 `7 V
4 Y/ _+ F6 J3 ^2 H/ X7 B/ nif ([trust-ok] of self)
9 }* c# a5 X2 \# |- _( v;;
根据ij的信任度来决定是否与j进行交易[; o  a/ R1 l3 b+ w9 r0 g7 X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 |' B  t. v# R1 t* t7 e; V
) ?+ d, \; z) k$ i; ^2 w2 f5 A1 ~
[
5 v7 x0 w% u9 x% ]7 i5 g

  M/ g4 |( \/ cdo-trade
4 E( R+ r/ s" [6 ?

8 J$ e, M9 d4 b0 m% }update-credibility-ijl

  b. j5 A: L; A+ L
8 B; n. K( {. e( Y3 w& pupdate-credibility-list
4 }; W" O1 M' m) Z- _. N. i( M5 i' a7 _
) ?0 Q9 Z+ a5 |( B5 {
& A6 s2 ]4 `% y& n& |
update-global-reputation-list

: a. Q, g1 J0 P% S3 _
9 V* B. g) y) i2 |. I: l. h; rpoll-class

2 l' `+ r& r( u( J9 B9 [  C1 \9 Q% t  Q$ Z# }& B. M2 ^
get-color

" Z2 B( c  N3 a, R
8 g4 g9 s  ?+ e" V]]
1 W4 o) K0 Z0 c0 u; W4 ^. T8 K0 ~2 m( {
;;
如果所得的信任度满足条件,则进行交易& w" H* j0 `* t
8 J% v' _# k0 q
[
2 ?6 j  {9 |  r# T3 \, i( W
4 e+ ?( f7 c6 N/ @( J& p/ J
rt random 360
5 m7 n! [  g( V

" m5 w. T7 q7 Q& cfd 1

; J# p: a5 I7 Q5 d6 D4 s% }* F( o: ?: g+ i' c/ e$ T
]

* S0 V* e- G' ~& g0 h& @! L1 |
: L+ _; I8 ]/ Bend
, ^6 c* g! c# h4 e3 F0 E4 Q' H

- U, N; T: N4 s- Z; dto do-trust : ?: ^/ b) j* A$ E; G# l
set trust-ok False) a1 h3 `' ^1 t) l! ~1 o* [5 N7 w" e
  y( O5 K( W$ P. S! R

' x" P5 x1 n1 U0 x+ Xlet max-trade-times 0/ H, |2 ]. N( [5 A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 E) [6 r5 T, b( P3 D# r9 n
let max-trade-money 0
, z: |0 _5 J( ~  `3 k  J0 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ r! ?1 O% F0 qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' c3 T$ r% U6 k" p/ m
2 j# l4 u/ q9 [) Y
& Y* ]+ `9 h; [5 Z  C* c& y' v
get-global-proportion" l! f) u8 R9 N- j( ~/ S- ^3 S* _
let trust-value5 ^) p/ ]( c* Y
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)

. }0 V" c, s$ A+ e6 o" B% L2 P) zif(trust-value > trade-trust-value)9 r: H- l9 y0 X, W6 N  d
[set trust-ok true]
( r+ E8 ^- l+ y' dend
9 F+ t) q, d$ {+ |% _
' x# h$ @; l7 L$ @! W& W" O( qto get-global-proportion, @: ?9 M) x& @' p1 V1 ]
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 B$ s- w6 w3 w5 A4 N[set global-proportion 0]+ }5 r1 z. v2 x$ }$ F- H$ J# Y
[let i 0
' T& I; M. C' k- m) b$ F9 jlet sum-money 0
; ~& s+ y1 b/ }5 Twhile[ i < people]7 {: z6 {* L, ]$ W
[
  \, e( _/ k6 K+ |; q' Jif( length (item i/ Y4 E% R4 z% g& |4 ~
[trade-record-all] of customer) > 3 )
/ U3 E0 M  p, a0 G, s: B' [: m
[
* @  W! m' I( G6 W; lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 R$ W: R2 ?% a& K3 K0 _]$ |7 k+ a' u- |
]
, L+ M2 M' P8 A! H2 i; Tlet j 0
, [- i, z) w) ?" @1 wlet note 0
7 V; F) a4 O8 v2 I, Kwhile[ j < people]2 Y  V2 w7 Y! t- H
[9 j7 L# l) ~7 d& H
if( length (item i
  ]# V% {1 G0 T2 O# h' q$ ~  a9 ^[trade-record-all] of customer) > 3 )

" T0 `" F% H1 K5 N2 L[
7 v2 N, `4 I! k# b- zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 ]6 h$ K6 [9 M( T  |1 b[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* M: R" z* |2 E/ s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% x" V0 L2 L9 _; X" t]4 a7 o/ L! R$ p4 M
]
: }$ E2 r: D0 Z! Kset global-proportion note6 l1 m0 v" ^- I/ X8 z! ]
]
. r( o5 H! P# iend
" h$ x5 v. Y2 |- m$ J
$ G, [" Q4 }. U& @, gto do-trade) E$ Q! `( g" w0 R
;;
这个过程实际上是给双方作出评价的过程
9 k1 L& g/ b5 t4 }6 C1 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 ^! \" ^* y2 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 `2 R, a4 p1 }$ N' c
set trade-record-current lput(timer) trade-record-current0 X0 S. w  p1 W; `7 D5 ]7 B# y
;;
评价时间
4 J" W) @' J1 p& X1 @0 L) ]! ^ask myself [
) I8 q7 F, E& t3 u% N7 eupdate-local-reputation& T2 q% R3 C# y" P3 ~5 o+ v- H7 E; i
set trade-record-current lput([local-reputation] of myself) trade-record-current
  y3 S) X$ d. Q$ o- V7 T( e]/ m, V! Y! z; G% S0 l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. G5 J4 B2 Y( c; n# h$ _;;
将此次交易的记录加入到trade-record-one5 }' ]0 H/ j# q* l! j0 L' j
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 S7 }: h( h$ \; v! Z7 i/ ~1 blet note (item 2 trade-record-current )3 z) B7 e( Z+ F, x) d& J
set trade-record-current" h" [5 X- G* l& x
(replace-item 2 trade-record-current (item 3 trade-record-current))

# ~# v# ]: E, nset trade-record-current# _, ^. E/ ?2 K) V" h
(replace-item 3 trade-record-current note)
! e4 P( n; s9 y: Y. F9 K; ]; i
' _( t% e( J6 a' P
# _  Z) S/ q4 [3 O# T
ask customer [
. z; p$ h5 l2 h! Supdate-local-reputation0 T- Q2 z% ]/ Q( T: H
set trade-record-current
+ [, f9 ^: H2 t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 a; |, f% k' w/ Z
]
2 G0 L2 L, B, b2 U' q9 e
0 K# i" w' z' R5 [0 V/ Z; c" R/ k+ `: t

+ u+ v' Y* W( L) j+ Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% w  g- j- t  \' H* {
2 \7 f0 {8 p  D% V3 w% ~8 x5 W8 S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- D2 u9 s% G$ w* P% ~, ~( m;;
将此次交易的记录加入到customertrade-record-all
4 l' V" w7 Q! Uend
2 |1 t8 j, @. R+ a1 }) s0 G* N# a$ t! ^8 v
to update-local-reputation! I, d# h/ j! H% `6 u/ R- [5 `
set [trade-record-one-len] of myself length [trade-record-one] of myself2 `0 e1 O& R# n5 B8 G

* A7 `/ u# o& ~" W& O1 R; g) c4 j, x. M0 R* A0 P2 w1 {  H
;;if [trade-record-one-len] of myself > 3
# @8 w/ J8 l6 q2 l6 L  p
update-neighbor-total
% x) k0 @0 F8 {% C: W;;
更新邻居节点的数目,在此进行
* J( ]! ]. Q8 `* P, |5 vlet i 3
" a' V/ ]( s# k. o! M; [5 ^let sum-time 0% Q6 K6 W2 ~( j' k5 q& `7 i
while[i < [trade-record-one-len] of myself]  J& T) O8 [/ Q8 |  y* A
[/ b7 A' Q4 R7 ^! Z% ?6 S* X# C
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( D+ [' M, \  z3 Nset i* f$ A5 z1 f9 ~, s3 y! F# [
( i + 1)
0 R5 H! Y. B6 _, S
]
0 P: P4 ~& V  P; w! ]$ Olet j 3. {2 j2 s9 _: h4 T+ L+ t" ]
let sum-money 02 l8 b+ }0 T* l; \- U( t: J
while[j < [trade-record-one-len] of myself]- [  e" I/ a* f$ P; o6 B
[  U( l8 v8 ]1 k' n
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)
3 ]: c- L- G: z3 P- Uset j
5 W1 Z5 ^) h( X% C  u- p( j + 1)
& b1 y9 ]7 J, K  q
]
+ h% [8 ~5 Z9 ]5 V6 tlet k 38 k6 O- l- S! x# j$ \: r$ s- a
let power 0+ O: E8 r% M# S) q4 e3 c
let local 0
/ P; w3 W+ W3 C2 _6 x" Vwhile [k <[trade-record-one-len] of myself]( P' P; C4 t8 ^+ t* U' m
[
' s  j; Z2 |4 J# y0 x0 Cset 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) 3 {4 w, U; c* Q& p) a8 |' H
set k (k + 1)
; i* O+ v3 f" c2 G]
4 ^* p( \& I7 U1 `4 _" Zset [local-reputation] of myself (local)7 X: v4 [8 R, D: P+ A/ J7 Q* w
end. L1 z+ J# W' R, x* K+ z
' t" _9 V% h4 h& l* e+ x
to update-neighbor-total
" s' X- a" {) Z5 }% d, o) ~; `$ n- ?$ M9 \4 b. X4 d  w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- l% V* a; h5 K1 V( I
1 O# t0 |$ F* r& I

0 T3 Q2 x3 M+ M# oend
8 c+ n' c2 q# W1 x! K2 E# l2 a- X  s& d' @4 [6 m" q9 R
to update-credibility-ijl - a/ R( D' x8 ^
, ]6 e- c0 v: t' F; 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。
  C# u+ j( H: Z% Q! Jlet l 0: F$ r: L& \0 P/ g' X. z- w, e
while[ l < people ]
: S4 Z: u  k9 F% l! E( D, U4 U. @;;
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
' a% }: w7 q7 [4 Z5 v[
' [; r' ~) f  n; Q3 L4 Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. j( N# \# q; e* [, x8 ?if (trade-record-one-j-l-len > 3): y/ ?5 I# B1 t3 z. O" u
[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. a% A0 k8 m8 C9 W
let i 3
% ~) h# O* _; A. D( Z* Xlet sum-time 06 D1 t: I* d3 M  d+ Q
while[i < trade-record-one-len]
; @: A, M  j! R" q- }# H[: `1 x2 f- P9 i4 ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 N# c9 l$ l" {3 A
set i; o# A) b0 f5 {
( i + 1)
4 {! g) ~; Y: U6 \" E9 m+ v
]
) q* y2 ^- Z/ d, S5 d2 h  v* ylet credibility-i-j-l 0. ^# a, L* w: u+ C' Z
;;i
评价(jjl的评价)
; N; v3 I+ V9 a6 Q' rlet j 3
9 O" @' o" F! s. h1 n2 w$ elet k 4
6 g/ Q" A# A* Q. U7 Twhile[j < trade-record-one-len]
4 I7 w1 I0 h/ n[
3 E( ^5 e/ [* X, _8 I  N' l' swhile [((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
. p# d( Y* u: j  C+ }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)+ \/ e$ }0 Y6 H) i
set j
& @, w8 t# u9 x5 q( J1 p1 ?( j + 1)

6 n3 w- S1 c5 m]
* x% g0 ]. k5 f4 i1 m+ M, V$ D$ Lset [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 ))
: Z# Y7 M8 n# Z
$ I% M# Y! z0 I8 |( h
! D) O# a2 h& t2 G0 E) D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- h$ ]3 w3 X) S7 I8 \
;;
及时更新il的评价质量的评价% p: k7 ?) P' y: N; _7 ?0 h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' S5 C  ?/ l. ?! Hset l (l + 1)! \) v- `+ j- p  Y+ r+ G+ E) x
]- Z9 b" b/ c/ t; l
end
+ j; ^( B- {( m' e- {7 B! f/ B# Z" J& A5 ?
to update-credibility-list
5 X8 B4 {+ g9 k1 o5 q" ^let i 05 u5 C% l5 A/ l2 g& a+ T/ A3 S! \
while[i < people]8 s7 a  h- ]9 o. C5 n) J
[; n5 _9 {" b+ B, g. [7 I
let j 0' B6 S3 {. w; d5 R1 o$ U
let note 0
! q  r* j  @) ~. Hlet k 0
; B2 K7 J9 d$ ]% n8 P! C/ b* h;;
计作出过评价的邻居节点的数目# z/ }2 A5 Y( y
while[j < people]5 S+ |) h; \! j" P  C
[/ F8 ^3 ]0 M4 @0 M8 S0 v* u! s. s
if (item j( [credibility] of turtle (i + 1)) != -1)
( O4 y0 \7 y- b;;
判断是否给本turtle的评价质量做出过评价的节点% h' S. L9 Y1 ~4 u: S% K
[set note (note + item j ([credibility]of turtle (i + 1)))+ ?9 p1 [# x2 X. X# w0 B
;;*(exp (-(people - 2)))/(people - 2))]
& a4 ~6 M2 q2 S! O! q' m( `4 |+ g
set k (k + 1)  [, l+ W1 D, T( }3 [
]/ R& D. N% i( z7 w. O' F2 s2 O9 p
set j (j + 1)
) Z( o8 ]# f6 y0 r* l/ O8 u]+ M" f4 T- Z( Z, Q" J
set note (note *(exp (- (1 / k)))/ k)5 j8 @. n5 T" ?, h
set credibility-list (replace-item i credibility-list note)6 u  l# B5 V& f; D* G. S5 B
set i (i + 1)* O+ g* w2 b4 v! b7 |' S3 B
]  V4 p0 a) _1 B+ f+ |' u
end
' F) d. w8 U; ^. U  }1 k  t- e
( w: B" c% n" w( i" |" u& Oto update-global-reputation-list
5 E6 S& i6 N7 J0 N7 ~7 alet j 0! {$ ], d* m9 g& w8 _, ]0 V
while[j < people]
# @0 S% V3 m) e; V[% U& }' _/ l& u2 h% Z5 x  @
let new 0
2 k( e3 }% d2 g, h7 B5 ~;;
暂存新的一个全局声誉! i0 t1 _! C+ y1 e& i- P
let i 0
) V; Q* J9 G7 ?8 Dlet sum-money 0
, z8 h3 [' P# j) x4 blet credibility-money 0' n: s% R2 \, [- u7 W
while [i < people]
0 m. J, j) t" @  h9 q, e4 R[: r) _, L' ]& w) r# ~/ k" K3 j4 E
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 Q# j$ a5 N3 E7 @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% _- M1 o+ |7 r. p5 R6 D! ]
set i (i + 1)
- k' f* v1 n. I$ J]( c$ S$ }9 G; Z; ?- r7 i2 ]6 S% O
let k 0
8 ?* X! g- H+ o5 Ylet new1 0
. u2 f. t3 Q9 V9 r; a! k$ g4 V9 vwhile [k < people]
% A. ]; h+ Q4 [* E' j+ B- j[
- s' I' ]# z* Zset 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)/ L( s) @8 {8 H. S% w% B
set k (k + 1). X$ k( t9 w1 k: G, [0 u
]
# \- j) E2 T4 i% E: Z  I4 U5 W8 U4 Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 e1 m- k) Z% H
set global-reputation-list (replace-item j global-reputation-list new)
7 E5 S+ ]4 }8 C. y0 `& T) Oset j (j + 1)# X) r7 |+ i# Q3 l
]
6 @, W" j" C6 o' V! U3 k$ Lend2 ~! Z5 l* k$ ~7 l
& V: u1 L" ~. X5 M- L) z- ?

5 X: d# X' y6 E; b8 Q! ~! Q! E7 ~, C
to get-color8 F7 Y6 [! j2 Z, K' ^! S" q" s5 A
  m4 Z0 l2 t$ U& O  V
set color blue
& E$ G2 U6 ^, U3 `
end
/ \1 O  ~, ?* V, \) j1 F8 J+ e& D
to poll-class2 \0 ?6 L/ r. K) T( Q3 v
end
- ?2 l/ u4 W4 s3 s  G( e6 R1 z/ I
) m' o% f6 z  \7 V, Tto setup-plot1
8 I6 M8 S7 b+ v5 }4 w2 \
! g4 ?" l1 `1 k! [2 s0 y% M- ]set-current-plot "Trends-of-Local-reputation"

: A  O5 Z3 a$ [3 g. o: w0 B7 H
' n9 @5 g: g9 J! ~! |set-plot-x-range 0 xmax

& O" C# g5 ^& _( @- s& t0 |% b9 I: ?3 j
set-plot-y-range 0.0 ymax

# O) P0 q1 |$ X) b$ ^* \" eend
# |  M# J( k3 G) f  o) K$ }
7 t6 `) [# J7 W& dto setup-plot2
9 E: M* I) {$ c. M
1 l) k0 _1 r/ w* A6 y' P# b! kset-current-plot "Trends-of-global-reputation"

) O( W. r# s: I' l) g
+ p3 G* a5 T4 Y7 N  x9 Lset-plot-x-range 0 xmax

: I) s" R6 [: C9 q
5 r. H, V; N# S' t/ H: dset-plot-y-range 0.0 ymax

' L! H- b# R3 ]8 D. Z) i" A; Z, h! uend+ ?2 Z- G7 m3 H" u- N" L5 n
. ]. w( z, s% w  e
to setup-plot3
$ F: ~3 C* K2 {& R0 ^
# S& ^6 ]5 _# [set-current-plot "Trends-of-credibility"
) s) a9 [6 C$ j! f
  D$ L- c$ S* t7 N& `+ |  j" ^9 Y
set-plot-x-range 0 xmax

& [. N/ J. m* u! A( P; A9 X& B0 \
set-plot-y-range 0.0 ymax
" X+ g9 w6 D! t* x% g
end
, ^8 z. U6 _( a5 u- {9 I: R- \& K$ L' ~- H) s, z
to do-plots
( u1 z6 i7 }% ^set-current-plot "Trends-of-Local-reputation"
6 ^1 d0 p  a0 g8 F% G9 T$ Oset-current-plot-pen "Honest service"- m' U' u2 l* N, v$ Q# p' d! Z
end: ~/ I( z4 u! F+ X! Z( Q2 P  o- c
; l6 n- T: O) B% E+ x( F" i# U/ b
[ 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 R4 J9 l4 {# k; l
+ W! B3 @' Z) V; M. z2 ]: w1 F
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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