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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:# H8 a* K) I0 b) M2 P3 P4 Y
to do-business
) Q, D8 X1 V$ b9 i7 ^* { rt random 360
, _5 x! _6 Y, Y8 }' R/ T; d: X fd 1
9 T6 D# \3 H8 u% I) {- Q ifelse(other turtles-here != nobody)[8 U8 Q7 I/ Q4 u  P7 i
   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.& Y; D& s4 R( C  A3 Q7 R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! z- A% h3 C6 m0 |) K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' k! g0 ?$ Q8 @  s& `/ J' s
   set [trade-record-one-len] of self length [trade-record-one] of self
+ Y1 l, @% w. e   set trade-record-current( list (timer) (random money-upper-limit))& B2 W! L- K# z$ \5 Y

6 J: E. H  q% {% A问题的提示如下:
% N/ Q' o6 @4 }( N0 E& }/ o2 S* C/ j5 {9 _
error while turtle 50 running OF in procedure DO-BUSINESS9 v+ ]' {3 j" u1 [$ [
  called by procedure GO
4 W' B, Y1 D. p# \OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 v! P& S0 U3 T4 Z
(halted running of go)7 G$ a1 o3 |: u; E% _
$ M9 I; `4 L; v9 {! D* 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~~4 G) w' F" f& m3 |
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  A5 {  M8 E  `0 `. F
globals[! R" \4 z. O* ]! H
xmax2 m; `( s6 X( ]7 j
ymax
, g) Q5 P. b% O3 ]2 H1 Xglobal-reputation-list( V0 q! g$ T, b$ m

) N5 P! j( |7 `;;
每一个turtle的全局声誉都存在此LIST5 a$ w' E: l; M* \  B
credibility-list
. [/ q- D- z* q3 s0 T  ?# S;;
每一个turtle的评价可信度" l. g. N" f( C% C( B. J$ P1 u
honest-service! t2 Z6 `5 f+ W) [6 g- Q6 S; m
unhonest-service- ^: S% ~1 t$ D+ A2 \+ c4 y* X$ Y
oscillation* x$ T# Z. Q2 J8 l# ]1 o6 h
rand-dynamic8 |/ i& ~5 @% Z6 a- k
]8 v% b2 ?; J7 j8 A! T; L. J( c: r* y  [

6 F4 z0 F+ |( k, ~turtles-own[
, [6 p" u$ Q' w4 E# n: \- L: d/ ntrade-record-all3 S: P- t5 n) D2 a+ L- N! w
;;a list of lists,
trade-record-one组成
2 A: ]- ]% b, g& ctrade-record-one& ~, ^* F7 F3 w6 U+ s
;;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 `1 J6 m* s% m9 P, Z5 S
, D4 T3 t) P5 w/ \7 e+ F0 W+ z, c6 @;;[
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]]; k6 N9 D8 y" @' ?# H6 L
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]: h3 U" w& v( ]" O* i5 _, e- f
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# l2 {, }" p( Y- T$ z
neighbor-total
# J/ I0 L/ }3 _* |' d;;
记录该turtle的邻居节点的数目$ E  K# X9 x9 P7 y, G$ ]
trade-time
: |% C$ j# C6 A;;
当前发生交易的turtle的交易时间2 X$ q$ J# j8 ^( ?
appraise-give
( T6 j% W, z8 R% {' V& a;;
当前发生交易时给出的评价; D0 h! D, ~( K  h" i0 U4 R, t
appraise-receive2 Q9 P/ a, F+ W7 L$ [9 t
;;
当前发生交易时收到的评价$ m* ?$ u$ C, C0 m/ l2 M  F
appraise-time
7 b# c+ T* [, ?4 R5 j9 t, `;;
当前发生交易时的评价时间
2 ?3 \9 k9 U8 jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ \3 i" q* U. X* Atrade-times-total" \  l6 }9 p$ ^; y8 Y: w
;;
与当前turtle的交易总次数
" R! W/ r: F9 g3 K" d; V8 Btrade-money-total
% D3 y: L" G9 ]( [;;
与当前turtle的交易总金额
' K. a8 u3 t& Mlocal-reputation% n) e  l- k4 w5 O* j9 y3 P
global-reputation# }0 ^7 u% s7 W- N
credibility
6 b; E9 m3 A3 m. M;;
评价可信度,每次交易后都需要更新
" [! b  }& g' w! ]credibility-all# T( f. q" N. S3 ^( e! n
;;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' t% d( M! c7 n# c

9 _/ Q) Z7 z8 S; V;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5" G6 h, D, z. o) ^% ?1 r) U
credibility-one  o4 P; z6 [4 Y1 Z. z: S  [
;;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people2 m0 K( V. B5 ]" i6 Y" a5 }
global-proportion
$ t7 ?+ a. f. X/ X( C* }2 j5 Scustomer/ |0 T( d  `% X1 I
customer-no
1 C5 U9 j- G% v* c% P% ntrust-ok2 ^) p5 `0 T4 N8 r
trade-record-one-len;;trade-record-one的长度( b  D' d  n$ L. T
]
: k, s4 L8 G& C$ E: \
2 w8 {3 V; m5 h3 R;;setup procedure$ o# j5 w. v  X9 J' ^5 F3 M

7 Q0 M3 T1 w9 l9 B: D0 Q! cto setup
& [/ `0 b1 j  ?# l
) p( N1 F3 R1 x& B0 u0 H0 ~ca

6 y0 x, N6 v$ _) [- N+ Y4 U' p' f" p* W, M$ H- H
initialize-settings
. N% B2 i; V2 {' ]0 \5 P* G
6 ?9 Z* i# v- Y$ d) b2 T& D& ]
crt people [setup-turtles]

3 }0 [8 I0 L$ h/ a: R7 L. e# w+ \# B5 s. n5 S! S
reset-timer
( G8 H5 y' q2 X) T4 f

4 ]* R8 c- N6 M3 h+ h! ~9 W( Jpoll-class

1 Z- _+ q% }$ ^9 f4 Y- q" n) H( _# m% N: R1 j! S5 j' }
setup-plots
1 U. ^7 x) k# E$ J' I2 ~
( p' r" k  Y& J1 i
do-plots

& t# n! x! \6 t6 T& B+ Xend2 O# C0 X( j% ~# W5 V6 J" K& U' D
6 r# Z+ i5 q: k& G0 \# ?2 @" g
to initialize-settings
" |2 j# f, h- L) D; ~  r7 S, ]! E7 w8 p8 r) S
set global-reputation-list []

8 F9 Z- l- A: q; A! _) \
! }9 g# T% _1 i' k! {7 qset credibility-list n-values people [0.5]

: l# n, s) x. ~" g- Z& M2 k
3 D  W& z' B- x  H7 J2 oset honest-service 0

0 B* K* \% I9 l3 D
/ ^* h6 d: j/ Q1 ~# O, ~+ s5 N) U3 tset unhonest-service 0

( g% O$ v' c% u8 m8 [3 G8 w. R  z. H4 J8 d: B' ]/ V, V) a0 a
set oscillation 0

; G/ w/ j/ ]9 H) a! ~% w- b9 g3 r
  A# j. n" F9 S$ o/ T6 T# Zset rand-dynamic 0
& ^( `/ k5 w/ @. g
end) G3 d7 [, i- C1 k* S
# Z' Z0 `. w" s: y  T* N
to setup-turtles
+ a' O  Z# ~% o( k' p! G) J2 @2 iset shape "person"
+ `; W  F" F* H, W' y. usetxy random-xcor random-ycor2 Q9 K) d2 W- X( C8 t
set trade-record-one []
/ P5 {4 D8 n# d4 w* i
2 h' ~- i# D9 i; k8 J+ ?) |
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 @& }6 I. X) I0 s0 x4 g
0 j0 P# \+ _6 [( h6 c
set trade-record-current []
% I5 M) G% Y9 uset credibility-receive []
* r+ R2 B1 H  u( w& {9 qset local-reputation 0.5
$ d" T  r2 M+ i% p' zset neighbor-total 00 u5 y0 S- s( |2 p$ x* j5 ]+ V" g
set trade-times-total 0" l" g- @& k7 t) L8 F& T
set trade-money-total 0+ x! q9 m2 r) J6 |! a3 G
set customer nobody
) \5 D) L2 I2 mset credibility-all n-values people [creat-credibility]. q5 e+ z2 @* y. d3 w' k
set credibility n-values people [-1]
- y+ V3 y/ A. w! c- Q6 B7 Y. vget-color2 N. b) @* C  L( |7 _

8 h& Q, g& n3 Q- N! ~end$ X9 n% {$ v1 N3 T/ G! i# B

& r7 |: Q* f9 b$ \to-report creat-credibility
2 G! e$ S: d3 L; m. e, lreport n-values people [0.5]
8 R5 Q" `5 k0 m! }end) d2 z+ h2 l( O$ W. E  z6 h: [

$ u2 z' x9 R) V0 ~+ R+ }3 Eto setup-plots- {3 V+ I4 g, \1 a* w  d1 q

, c& N2 K* W7 P( u, N7 Z6 @0 `set xmax 30

0 p7 |+ H9 t* M& G4 K: j4 @5 ?$ B5 i
set ymax 1.0

  [  U# D& Y9 O* I3 a4 P; x1 M, [3 O$ P4 ]7 W( R- `% Y6 }0 r
clear-all-plots
% C0 b( o/ k1 t% M* \& |
5 E! e* T* p5 r/ N/ v: P- Q+ i6 w
setup-plot1
" i* J. K. H0 P* q  \) r! A7 o
7 O8 _# E( i2 U
setup-plot2

  W8 z5 c3 Y0 _6 ?' F# _
2 Q7 I  P; Y# @- ssetup-plot3
( {- b; B% l0 c7 y2 t' V4 {
end9 d  k( g3 w8 f0 x; w. K; j
' v$ m' ]0 @6 X2 x( m
;;run time procedures
6 U, h# R: H# K% W- v  k4 g( s8 y  ]
to go
1 Q- Z, R( L8 ?+ z# C' g' t+ B0 J/ v
- ~8 R& ~+ x; Mask turtles [do-business]
0 e: L4 k9 M7 K. B7 j8 M' H7 a) Y
end1 I$ `0 j. p- a' v- ?/ p; O

5 H/ e3 C1 s& Ito do-business 9 ^; P+ f4 N6 R4 B8 v( }

" f( M5 b) L2 L$ ?  \* x: o3 {& ~7 J! A1 B6 d& z( K  L, c( b2 }
rt random 360

( h! J3 a: B9 I  K9 z7 q' P) I5 u
0 q. b& i; Y6 p; J! U* Cfd 1

4 u; W5 }% s3 E) w* @
7 {) X+ y7 k- uifelse(other turtles-here != nobody)[

$ c/ x# q  H4 p& K+ v( D/ @; T' {5 E
2 p. L4 d$ e* ^" dset customer one-of other turtles-here

  b4 f% L9 |- D% P; V1 {4 O( e4 r2 ~0 v; J" j) S
;; set [customer] of customer myself

8 C9 E9 I+ v% b* L" ?
$ B8 [  L1 k) kset [trade-record-one] of self item (([who] of customer) - 1)+ e" }3 ]2 c& `( V* E% T
[trade-record-all]of self
4 P  U0 }9 [3 ]! T5 f% P; y$ Q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 t& q$ {. W5 f

, e  @1 G6 X$ zset [trade-record-one] of customer item (([who] of self) - 1)! P7 C  a& U" b0 n* S; e
[trade-record-all]of customer
, f/ t4 j$ D$ t/ ]

% _8 N4 |& F! \; I5 R/ `8 m7 Z9 fset [trade-record-one-len] of self length [trade-record-one] of self

( ]- ]$ E- L2 U% ?. C" N' A: l( r! Z8 T- ?( m  n* s
set trade-record-current( list (timer) (random money-upper-limit))
) h; |6 j: S& N( I0 Z& `
8 g2 c8 c4 f, y* v0 a
ask self [do-trust]
5 I8 h# G  R2 F  \5 G: e;;
先求ij的信任度" P/ q+ h0 N; J- G* E9 v

" a0 h: Z4 j# v% M, [- v1 A3 [3 lif ([trust-ok] of self): i5 e- c( i( \1 [% K/ l2 s
;;
根据ij的信任度来决定是否与j进行交易[
) f: |$ x4 W/ v8 D/ f) p' u% a' Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% _+ P4 c0 V) ?* o
! o& C) d0 k& h3 c+ q5 X
[

$ D8 F. B2 ^5 b* n' e) q, Z$ b- \# }5 J* }0 a# g$ f$ }6 v1 }9 q
do-trade

+ b5 G1 w* L' Z! e9 E8 E- b) d  h2 V
. ]8 I# O8 k3 G9 i; D; F8 _update-credibility-ijl

" y) b+ ]  }) i- E2 U$ f1 k
' @/ v. M9 J* z1 hupdate-credibility-list1 }0 ]6 J/ p9 ~0 U) _6 n: p: y9 Z

) X- H/ W9 q, G2 r2 i3 W/ t
* _, }% B5 d6 n5 ?. z6 B7 s- Supdate-global-reputation-list
- T  l3 |6 A% n" Z- K0 v& F- M$ a. m

; M1 U! m( R0 npoll-class

; G; K6 t3 A0 T
. M" K: Z  r+ J& Mget-color

6 Z2 Y. U+ D; g1 D
) @: U8 t# d2 n. @]]
6 Y$ A" Y8 r8 n) ?3 ?0 K$ L% k
! C- F* F; b5 V/ N1 J" H;;
如果所得的信任度满足条件,则进行交易
9 ?/ @6 c# J+ R8 \, P
, x$ n9 r9 Y  X9 S[
$ V, L+ I' p5 N

+ J3 B. J( E. o3 v2 D* Qrt random 360

1 O: H8 c. M' n3 H2 J/ s# I2 b1 K6 I- ]$ [
fd 1
& l1 Z! f" c% \

3 A: ]& W+ O4 P* I& H]

/ \- X; K! I& Z) C8 [9 q
2 X% C: P* D, C7 [- t: R3 ]9 \end
; q" S  z4 n8 V% C: E9 W# B9 I: l
. y6 {' W& S) O6 e# z
to do-trust 9 I; B1 m0 o/ n6 a( m
set trust-ok False
  \5 r1 e2 I; L- E& A' X+ Q1 u3 l$ R% V3 f) }2 E6 m- d
0 j( M3 n4 y4 v/ }$ f- g/ g+ c5 S* X
let max-trade-times 0- _2 ^$ O5 ?1 A0 G& o' F
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], ]  ~1 D2 H/ B( t3 w# s7 S* Q
let max-trade-money 0
0 I  w8 L7 r* D1 Z9 }3 i8 z' Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" Y* F6 c/ d- f4 ]% j: T- llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- P2 l6 C! D  i0 J% s1 |& J# \  O

! M, N$ \8 p5 X

0 l/ P4 l# o. J" m0 _+ S, `get-global-proportion
% t9 H$ D  i/ S( p# ^let trust-value
: C+ D- S4 |) ~/ vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 d! U$ G# P' A, Uif(trust-value > trade-trust-value)
; \# \/ l% e6 V+ j& X' L[set trust-ok true]) [( k, s3 N1 j! a9 q. X
end
0 F4 v2 f/ l+ W. y. }& y7 ~& Q9 r# U  c5 |0 J' B! J
to get-global-proportion
( o0 W7 k# R% f" z8 |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) L3 {% [9 l( Z" k1 _" s" D
[set global-proportion 0]5 G4 g/ ?1 }* w+ j
[let i 0
$ g# s% Q2 H# X9 f2 Ilet sum-money 0
9 ]5 ]3 O/ \% Z! B0 B+ p. ^0 {" J3 Wwhile[ i < people]
! m9 K+ K' s0 Y7 S9 M8 j[
) q5 f+ w- y/ X, J8 X; ?8 l  jif( length (item i* x; S  |/ \9 @6 K8 y0 a: q
[trade-record-all] of customer) > 3 )
0 K6 z2 k8 I- U  E6 c
[
& R- _. O4 m- V" P  `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& J6 Q+ V) c/ W8 c- s* t
]
8 c. |( V  _# U) ~]0 x. r& _- O7 [, ]7 M, C. P
let j 0
; |" a' \, m" r! Rlet note 0
* B$ u+ ?' [6 E! `* \1 z4 mwhile[ j < people]
& A- K) n1 U7 h$ s6 M4 h: ~* u( T9 @% [[7 }$ t5 @- i4 q( R0 ~0 p( c9 }
if( length (item i
  }, n' V! e0 \5 b" X9 o[trade-record-all] of customer) > 3 )
+ p) M, W( W. F" O1 K# H4 ?
[
$ H9 f1 A: ^0 g' l3 k; a4 pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" c! H: v# s7 F% z4 W# q: P& p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; D& ?) b; {0 ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 d8 r0 Z( A, E; e]
% x5 L& Q/ s* ~% j! S]8 O. b) I: V# G( i0 R* e
set global-proportion note
0 P4 [6 ?0 s+ [7 a4 b& M]
; ~) {0 {4 `+ p" z4 h0 o2 ~; n9 q2 \' cend4 W: h9 p" ~8 H  M+ ]5 @7 F. s
; ?: F/ p: u& K# e. e1 g
to do-trade- U8 F7 k0 B& \/ P# m& f2 ?
;;
这个过程实际上是给双方作出评价的过程1 i7 S$ Z6 B7 M2 o2 g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% c$ |8 w! l7 {$ ?# L6 l; R( m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 c2 R2 U1 v7 ~1 F0 {" X' }set trade-record-current lput(timer) trade-record-current9 H0 _4 Y( ?* r* x
;;
评价时间6 D2 b! l9 g$ |
ask myself [# E" J6 q! I% S( N1 v
update-local-reputation
! v  a8 ?" K: H  }) }5 i8 Aset trade-record-current lput([local-reputation] of myself) trade-record-current" a- x1 s, O0 m4 C& e
]
' O1 A4 r6 b; N! B8 Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 x! S- p  S' M" x+ h* Y% @
;;
将此次交易的记录加入到trade-record-one
$ h, e2 r5 l; _/ M5 P3 _3 s! bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ ]' F. `. |& }4 E, T: G; H" C7 t8 A- dlet note (item 2 trade-record-current )6 f) H6 K2 g+ i7 g! \: M
set trade-record-current
% x* Y* E' N- G# `. ](replace-item 2 trade-record-current (item 3 trade-record-current))
) @/ r* Q+ n/ y& k
set trade-record-current
2 X" |  i- k# P8 L" N% `(replace-item 3 trade-record-current note)
+ O7 g4 [4 Z( g$ R  p2 f
' M0 C  k" c5 o5 M) b2 g3 Z/ M$ i

! Y4 k9 S$ ^  Dask customer [' Q7 d8 D2 ^- h' ?, ^: \/ B
update-local-reputation
! g8 k! t& H3 P3 ?/ \9 gset trade-record-current1 ]& f7 m, W- v3 h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 x) m5 v+ e8 N  G+ |
]
: X1 y6 {5 ~6 a+ [2 |$ j5 d7 C7 Q& B4 y7 i1 D) }& B6 o- o
* F2 |/ F$ b, {. i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ `9 }2 X% Z4 D$ h4 F' s! Y
. D7 ^: c9 h- s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& z' t6 u" n2 M/ }3 V0 d+ q5 L;;
将此次交易的记录加入到customertrade-record-all
2 O; W! U- b7 hend
6 c$ }( d- s( Y, n; Y
# c6 f8 b! f3 S9 ]; K* n& dto update-local-reputation, @, S5 {1 U! |" N# ?1 m
set [trade-record-one-len] of myself length [trade-record-one] of myself0 D  u. L! {' u8 c- x/ I

* e# s7 W- p: Z, ]4 J) p8 {0 s
& e, `6 n( L( R' g8 c( H  h% G6 l;;if [trade-record-one-len] of myself > 3
! o5 i+ Z: [1 O4 U( [
update-neighbor-total
9 E/ s- D) e2 @6 F;;
更新邻居节点的数目,在此进行
1 o( Q' u0 a. N+ ylet i 3
% T+ F; O' {5 ]! olet sum-time 0( \& Z' a( H: \" D
while[i < [trade-record-one-len] of myself]
  @4 ?: F1 @( W/ u- e) S% z[' H  Q, e/ g$ |8 v0 K* j6 @
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! n4 P$ F& P% @3 E3 Q: @
set i
5 P% ~1 N' i' q6 \6 r( i + 1)
2 N+ d/ C, z; x1 I; ?) [1 q8 `
]
" @6 T! E' n& r/ [0 i. Elet j 3
, [$ V( z5 L6 ]! ~& Flet sum-money 07 P& M/ h$ V% u$ ~7 H3 A; R; O
while[j < [trade-record-one-len] of myself]
+ `+ T" Y0 b7 ], u& e- g8 ?0 o2 h/ C[
/ C  j$ q, P+ 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)+ L8 v* R& d5 \0 m
set j" |& c& j4 |1 C, c" h
( j + 1)
1 q& p/ V3 U$ |* \
]/ m; f( M0 k9 \+ l1 q0 W
let k 3
5 p2 F9 K- ?: t) l7 E: F" t  {let power 0& z4 |- ^8 N; G, V2 S
let local 0
4 W9 \8 x8 r! j& h" P8 J% Kwhile [k <[trade-record-one-len] of myself]
1 i; i, W- N5 c+ w& A& H[" Y5 U& W' k- s* K* U8 [
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) & T( t3 K  s' @1 @! J
set k (k + 1)/ U& p% x  Y9 |  @  A* M/ F
]
0 ~  Z% W! T( i3 j; Mset [local-reputation] of myself (local)
9 s5 }7 p) a$ f5 Q- j, o: C5 Vend/ u1 L! X6 T! o

  w% v# K' C' c' N$ c- y- {% t+ s! Fto update-neighbor-total6 x- X# I& f# |

. e8 j8 S. J: r- y  j- Q, ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" F, c5 d" i/ P* l) [: s0 g2 d% S5 R

7 ~2 P* @+ Q' M

/ f  m0 M! F; y; @end
% l/ i; u& R; N' D1 c  @; H/ R4 |4 ~7 M
to update-credibility-ijl
& `" E. a$ I% {5 I, f; q8 ]6 P' _+ a( i
;;
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。: S/ y" h. n  d) K% u. p
let l 0- U) a. [/ e; K) y
while[ l < people ]
, M( e$ R; ?, L;;
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( X, b9 O. k8 z6 U, r4 ~. G- _9 Y: X
[' B8 F4 n7 I) r2 O- s
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- i8 [& J: \1 _5 M6 v
if (trade-record-one-j-l-len > 3)0 \, M9 l1 ]- [& s. B8 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-one4 k. M6 I9 J- z2 K8 i4 n
let i 3; h+ \% r7 }& o
let sum-time 0+ B' M' u) L- P& H  K  _9 X
while[i < trade-record-one-len]
, h9 a, W1 w- {[! r- _  J- F2 C9 E3 ~7 [
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 O3 r- ~7 v) u2 o$ f# }9 ]set i
; L! @$ ]9 k% z( @$ x( i + 1)
. S( W' m4 ^$ E' V) c6 s
]
9 d& p  v  Q0 Z4 l; {9 P6 \let credibility-i-j-l 0; W' d# |) |8 [  h( o) l
;;i
评价(jjl的评价)
8 z  w+ ?3 V8 L8 N- u. slet j 3
4 ]; W. j; k6 F" Q9 U' blet k 4
; C( m6 Q$ }7 u( P' k8 R: u3 iwhile[j < trade-record-one-len]
- v7 O. y1 l3 x9 R, j" o1 W5 ?[
- Y' [" y' B8 `+ D( v5 p0 uwhile [((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# {$ t+ y! e9 v0 |7 ?! f
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)
2 a: B+ p9 ~2 A- J: |8 aset j
5 |( K' B( o% Z! N( j + 1)
$ t% u/ K* o0 G; g$ r% I
]7 K4 J. s  f1 _% [
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 ))
( D$ Z& ?7 B$ R  B$ `  T( H3 G# w. C* {) X  S. b( i
$ D" U- h% z; ]% W* J  R- k: g4 P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); d5 g8 \1 D8 |3 j8 z
;;
及时更新il的评价质量的评价
3 V% D8 G- D; [8 aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( S9 J) D, R, {! N; iset l (l + 1)5 B7 G$ [5 f( D$ a0 z
]
5 M0 I" E% K0 j' u/ q7 Eend; R5 J  A; W* @" k

! @. b8 ]3 b% q0 Q# L  I  oto update-credibility-list/ i2 a/ v& F- u. ~
let i 0$ O7 z) t' {# u) y
while[i < people]: n$ C$ k" W- R& ?) c7 G8 ^3 ?
[6 Y) B+ x! C3 ^2 P9 m% n% f" [
let j 0
5 J3 x. I- ^6 b9 u" V5 Blet note 0
6 H/ x; \' y3 W! I9 @& \7 \, Zlet k 0; Y9 f' h9 `% B: R# A
;;
计作出过评价的邻居节点的数目# }; W/ o; u! ?: ^# Q
while[j < people]
- j$ g$ f' R& n7 W5 Q& S( k5 _( C; w[
4 w+ o8 r0 ?& o7 P. `# w9 wif (item j( [credibility] of turtle (i + 1)) != -1)
1 ^/ F8 V2 x5 i# R;;
判断是否给本turtle的评价质量做出过评价的节点. S3 o: c$ G8 s6 D( d+ T
[set note (note + item j ([credibility]of turtle (i + 1)))* z8 u, p9 h' m  J( q) D  @
;;*(exp (-(people - 2)))/(people - 2))]
" V& S: E$ c2 d2 D
set k (k + 1)* `# `/ l4 L: S6 ]" Z
]
7 p, @* x- a) Rset j (j + 1)% N. K8 ~, ^8 g5 p3 X' N
]
5 g: `) G5 f+ d1 D% Pset note (note *(exp (- (1 / k)))/ k): n1 H' i9 S+ O( S, j# h
set credibility-list (replace-item i credibility-list note)
8 b( u1 l1 {0 @% f# m( u) j- fset i (i + 1)
/ h& \) L' {# R  s: |7 V]3 I3 G' x  [- E. D! }$ q3 D
end
# u+ u4 B+ k  @+ {) Q* K" ], n- j% j; }/ s8 }' l
to update-global-reputation-list
+ G1 \- m" ~# @' `8 u  J2 dlet j 0
* C* I1 z' n4 q; C, K" Q+ vwhile[j < people]
. o5 V4 k0 l  U9 J5 A5 [9 `4 o[
+ W3 e% L/ e; N& }9 Jlet new 0
& z; s& p% C+ `) ^0 n;;
暂存新的一个全局声誉
9 y1 ]) g3 l2 a2 q  N( q! Nlet i 02 G* z/ o) I5 `+ g! C, E8 z
let sum-money 0- d& \: X6 C5 a8 c) i0 V( e
let credibility-money 0
1 M+ a" U! {9 gwhile [i < people]9 q8 u% {" i; r# X* y' V
[
- w! n/ C$ k- G/ I, R' k1 nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ [; ^0 F( Q, o: m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  T4 g2 i" |( r# L4 Y: S' F2 ~
set i (i + 1)
9 F) P8 N7 s; U2 x& g; r]- h1 }' z; Y2 O9 q- z
let k 0
1 `" C1 {+ h6 h% I( t3 |8 Jlet new1 0# w2 ^$ C& T& n: h" E
while [k < people]
' U2 _) U) b3 I8 T[
' Z4 r5 U' {% ?3 d4 `set 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)# j, m+ Z1 p# K: w" Y, p9 a
set k (k + 1)& U5 c& }6 B' {6 g4 Z# q
]
! M7 ^9 P" H3 u7 u/ J. z3 _! e8 fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' U6 Q0 `4 n% Z5 \9 D) I/ u
set global-reputation-list (replace-item j global-reputation-list new)
7 J2 u: |  a$ `- f. a* h; Aset j (j + 1)/ k. D, L* \. }4 r  }# i" S
]
/ T; Z; r# Z; R- }& `end
$ r0 l& f! C9 @+ o6 W; P/ g, C9 C, Q1 b5 X" ^

- T! Z! D$ j6 A! E
+ D- Z/ g% w* ]to get-color. }! J& a- M; x' z- \8 Y
0 X/ G! `/ k% F; ]/ a' u  m6 e
set color blue
$ [3 Z/ Y% \8 s% f
end& k9 k' I( P$ l, }3 T/ d9 v- b

/ {; n$ {, _( j+ m6 }to poll-class
; i! p0 w* l3 n) b  W/ c; Uend
5 f6 \8 L3 C2 F( {) h
/ R7 D9 U/ q% h& J; Nto setup-plot1( M9 _$ d) l! W5 [- p

, d8 g, ~6 j# Q( k" M* |set-current-plot "Trends-of-Local-reputation"
; k9 t* s9 y- H5 W

8 T7 `; M% \, z: yset-plot-x-range 0 xmax
( `) a! y& d( s; ?* L2 y

. r& `: U& r# q% _set-plot-y-range 0.0 ymax

) f0 e* p: x, wend. V% Y; Z8 \+ F  U$ m  ]+ h6 I+ ~

0 L5 k6 B2 h/ e0 y  i" ^  Mto setup-plot2
+ L% R  b: J- i$ o- N$ S9 D
( c0 Q! p4 c- y! n# m3 B9 Aset-current-plot "Trends-of-global-reputation"
( i! T- D0 E* _; u$ o

% _- G1 [0 x8 K$ n7 Lset-plot-x-range 0 xmax

; G& w4 Q8 `! R, t- H  U- l9 @# I( r" ~& ]2 s
set-plot-y-range 0.0 ymax
" p( F8 N3 h! F3 o9 R+ Y+ U1 S
end
8 W( U. t9 s1 }& L! b* g8 I4 y: U
to setup-plot30 u# M3 Y  q; N/ [- f$ |

1 S' w2 ]/ N9 Pset-current-plot "Trends-of-credibility"
7 V' Q1 p6 n* z7 @, I+ Y5 |2 d, c' b3 Z
, K5 r2 C9 D* [0 v# u7 C) e, z3 _) w
set-plot-x-range 0 xmax

" A& [6 S0 D4 V$ d1 C
3 |( C% a% v% o8 Bset-plot-y-range 0.0 ymax
7 Q0 p/ l$ W0 l5 w1 N! U1 ^- Z
end# c) [7 F) l3 E  b# D( P# M1 f1 R

% [+ w$ J0 Z' t2 Ato do-plots
0 I) n$ J) p4 l: h. z* C- t/ vset-current-plot "Trends-of-Local-reputation"' i7 o& Y, ~0 P% p
set-current-plot-pen "Honest service". h  |/ d4 Q3 d# u) p3 k% z1 Q
end/ c8 [5 b% r( c7 z9 l$ A

% z0 ]9 Z  _7 Z* S7 q( Q) F[ 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., \: |9 {- [# ~8 _. O: a! f
9 a' K- [9 J) R2 v9 L
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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