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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:
7 v4 D5 d$ J0 m0 ^3 Ito do-business
) b* a8 ~( o3 g2 h4 l6 l; } rt random 3601 W/ ?4 e+ A5 g9 D# L" d" R
fd 1: {2 ~& E' P) [3 y0 m$ N' X: m
ifelse(other turtles-here != nobody)[1 D! Q$ A: `( 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.
! G# @1 j+ ]9 M) O8 C6 F! i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" m/ k4 N. s; Z: Z& q: M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& ?) c3 P- y9 x* Z   set [trade-record-one-len] of self length [trade-record-one] of self
9 a: y5 F% @3 }; ~) _8 `   set trade-record-current( list (timer) (random money-upper-limit))
; u4 Q# v5 q+ a
1 U, j+ k# |3 x% b问题的提示如下:
! U5 H- Z$ D+ [8 w8 ]  u3 |0 w5 H# V4 s' N" G
error while turtle 50 running OF in procedure DO-BUSINESS
! A2 A2 t) W, g* _5 d  called by procedure GO: k: G9 T; l* M2 s4 a2 r% T
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 s( G1 ~. N& r3 t, j# N+ H* W
(halted running of go)# o" }  u4 T+ V# x* b% i" Y" L. o' b
6 E7 u2 n9 u8 _8 B1 M) s. K- W
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~~
' Y, F) Q9 \: G! m) o1 @! q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+ ]' ?* d* }  Y# k/ k, p
globals[
- r2 _, H2 ?4 t2 ~6 u* p" G1 Txmax1 l) X% Z8 T/ ]/ z# ]
ymax2 i# N5 b* I# I
global-reputation-list* Y: j) u+ l( }. y5 H: \
4 v/ e* Y/ J* r
;;
每一个turtle的全局声誉都存在此LIST; o( H1 D* c# B( _
credibility-list# G& N% f+ u+ p2 I
;;
每一个turtle的评价可信度
* p  b9 ?0 E  Z! C: }+ Phonest-service
7 P7 s1 h; D0 _+ s3 K3 D& T9 G. Gunhonest-service/ E+ S, p, r! \4 s6 N# h
oscillation* B8 ?0 U. E- Z
rand-dynamic
3 R4 f5 |1 l- b' }1 K/ S]- v$ ?! P  A/ f+ f5 n! t5 L* s

: \* t/ C6 [1 p% M) R, w+ eturtles-own[
  P; O/ [8 v; Jtrade-record-all
2 D1 c9 s9 k: N;;a list of lists,
trade-record-one组成
! n# J6 k! H7 u  s( H" @trade-record-one
: U/ L3 @7 b  L* y4 [7 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; ]7 G' C* F% o" f
. V: N4 v: c9 G0 K, R
;;[
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]]
7 @( ^0 B/ y/ ^6 K) Q6 C$ Rtrade-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]5 U! }. o3 ~9 D5 X% c5 [5 I8 E# N
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list0 U+ \. m  y2 D2 L% B$ ]
neighbor-total. z. _: Q5 P- o* n; c
;;
记录该turtle的邻居节点的数目5 _0 j& N/ D4 X0 O2 l
trade-time! `& W, V4 g$ _: A" a
;;
当前发生交易的turtle的交易时间
4 K9 n- k$ o+ s. N( L3 o" [& iappraise-give
. K; N: P4 m9 X;;
当前发生交易时给出的评价1 z8 f& w8 J/ H+ j4 H, N% V, }  I+ M
appraise-receive2 {% k; W, j" K9 n$ `1 H* E
;;
当前发生交易时收到的评价( M2 G! t) {" g) P7 P2 W& e
appraise-time
& U7 i7 X- L( P  ]# N* Q;;
当前发生交易时的评价时间
4 M% i) {, K1 o; V( V1 P- f3 H8 Q# Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ F; A& S0 }- Q& P; c5 M& itrade-times-total' D" S5 _- e& F% s0 h
;;
与当前turtle的交易总次数
+ u0 y. N0 }; a/ gtrade-money-total! {/ t' ~. _3 Y+ U$ j& d
;;
与当前turtle的交易总金额! J5 ^' h5 C8 F6 c* a
local-reputation
4 f7 y6 f% m/ @8 kglobal-reputation+ B$ l5 ~$ W" X8 v6 G4 e
credibility
! Y& h% c, A) D7 W* D& D;;
评价可信度,每次交易后都需要更新+ a4 i/ d. R$ i6 G
credibility-all$ t1 Y  [" s6 o' o% a
;;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* D( V$ N) Z/ |7 R/ j
0 m4 I) J8 ~7 t
;;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
6 i( R. v& }. }: Ccredibility-one
5 ]- [+ o) {8 |. D;;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
1 ^( L; N8 @5 |4 Rglobal-proportion
6 W9 U- t2 Z1 w" h# jcustomer; m. Z( O2 r3 [+ |% d
customer-no. D1 ~1 W- `+ j8 F! a& }1 q( p
trust-ok
( e- U* Q- {- ]- p; ~! atrade-record-one-len;;trade-record-one的长度
8 j& z+ g% y* D! g' ^]' X1 P( R$ p8 h; [7 A. d5 ]

" o% l- O$ f+ D* C9 Z;;setup procedure
' I- Q7 k# N7 c8 U* T7 A& K  ~
1 ^. ^. o2 W0 fto setup. f& i% n5 e6 M+ ]' o- L( h

1 k/ h; f* ]5 N( ~/ l- tca

" [* F. |- z$ X3 Z5 C( k. y) A9 Y4 A
initialize-settings

2 [% {. |# X. v  l4 k" F8 f& r4 }' f
1 S3 B* R. a6 B3 o& M$ L0 ?/ vcrt people [setup-turtles]

% v4 m9 r) ^: s: C; L9 c* |; b& M4 C+ M( [: N% ~* @/ g, I3 G* H
reset-timer

' M, E& u$ v4 B0 g: V0 G- l! f9 J, F$ u( G  L8 K0 i
poll-class
, R. m9 @. _& }; p" I1 z9 M# B

" o6 x+ N9 k! a1 bsetup-plots

: a! m& ?2 c( c( H- v- q4 ~: d1 a+ p! A2 [
do-plots
3 F2 `7 V- ]5 C; r& o
end
& d4 P; ^6 d( u% E5 H! k' c: X# Z7 ^5 w
to initialize-settings
, }- [; r+ P4 j( E2 u! v" Z" k$ K, C: H1 [& t9 Y
set global-reputation-list []
( v1 c' H* P7 l, c

) `7 }3 w& E/ b' Z" z5 e& l& Jset credibility-list n-values people [0.5]

- F1 I4 J2 S9 }, d* g9 |, [) x: a; x9 M9 a
set honest-service 0
! v4 r& @- G3 Q1 u' S  ]

  j8 {1 T# `3 q% zset unhonest-service 0
" b& U+ {+ ~/ K; w8 M' }
: x! C3 n4 ^; e
set oscillation 0
  p% c1 D5 _( ~9 X

, X# Q. v- E$ ]; xset rand-dynamic 0

( t: M+ z6 S& C  g" K! V3 i8 Kend
3 j7 L/ N* W( n- ?1 g$ H
/ O% n/ ?' O( x% vto setup-turtles
# g1 A9 b9 s' [8 p- lset shape "person"
" U0 K6 _  _' H2 B1 asetxy random-xcor random-ycor
. [$ K/ m2 {8 Kset trade-record-one []
; ^/ }4 d( W- U5 _$ d" x/ Y6 u

0 X! i; u' _& C( V( s* mset trade-record-all n-values people [(list (? + 1) 0 0)] % _8 `8 D4 p9 J+ O
. ^$ [' c5 U. K) E+ t. q
set trade-record-current []
& p/ y: D; @- F7 }3 Yset credibility-receive []
& f: q' a/ T9 z3 B% T% |set local-reputation 0.5
9 P  k' m! E& {$ I0 n3 }# tset neighbor-total 0
% }# J$ z6 [! pset trade-times-total 0& \* [5 \' m1 ^3 l$ w
set trade-money-total 0
7 b9 L5 @# G% B$ b* Q6 a1 Sset customer nobody* z' m" Z3 d% ?* O: y  F+ T% S
set credibility-all n-values people [creat-credibility]0 L' N: X4 s8 u" m
set credibility n-values people [-1]
+ P, Z5 ?5 _" ?" c; L5 v- Cget-color
& v. |* E' l8 `" P) o

+ i! j1 O" X7 y' cend( m( k( R: _3 w1 f

2 u; J" G! \( M- M8 K# Ito-report creat-credibility* J/ l* k; D9 b+ d( J6 W
report n-values people [0.5]
3 r( p: I$ p5 f6 Zend6 W& U: s7 v! I% ^) F: m: |5 d
5 ?; t3 q+ X! ?- v0 \
to setup-plots2 |" L8 p: u' L! u" |) z7 c3 ~

; K& r4 F# b0 O; b. I) v3 Xset xmax 30

2 H& r' \' a4 I$ A2 S: x5 S7 p  }$ S8 w
set ymax 1.0
! }4 A' F, s: K$ J3 d) ^6 Z

4 |- e* S5 e% B$ e: \6 z. Qclear-all-plots
0 J" c: F% D0 s- _
6 q8 ]5 o4 [- N6 n
setup-plot1
" e/ x* E5 F% h, D, ^
* p' G6 y6 v; L) v+ N5 n; |
setup-plot2
" p8 Q' s( |3 s6 [' ~# k# Y, _
/ M' G8 X9 k7 Z
setup-plot3
; p+ I; _) i4 E( \$ j
end
3 x  r5 T6 w7 D
0 c/ D5 `3 ?( y;;run time procedures& D( \, {( Q& }! H* e( P* n: c& p
7 H) U  G5 y; M5 }$ F2 @" J
to go' M3 m- Y, v& t( L* G5 q" g7 L
1 \: m+ `/ K* I
ask turtles [do-business]

' \$ d1 ]4 |! U* _" j$ E. o0 W1 ]end% c; I5 D- X" I$ ?" N7 h0 n

6 e$ \9 S  u7 t1 e7 Jto do-business
; _" x- C; d- B, b
" E3 n% ~4 T6 D- b: i5 w# F. E. @' ]
" B$ f" j, L- z6 ~# o
rt random 360

3 }1 L, l) s' P$ O/ z1 h5 z2 i$ R: q8 {: r) q
fd 1

2 I  ]0 A1 E/ R9 }. ?0 c  l
6 R+ ?" l, S3 Sifelse(other turtles-here != nobody)[
1 X" s5 m+ g4 x) J0 _
" _# H* e% H& c  X8 \2 a3 F
set customer one-of other turtles-here

: ^2 `  B3 X: T( `! \: b8 q
3 R, P" X8 P$ p7 d5 j4 `- S3 g: W+ L$ `;; set [customer] of customer myself

4 l5 P$ L% B, K6 W( r9 B0 i- V
- E* `' j- ^3 cset [trade-record-one] of self item (([who] of customer) - 1)8 B% \( ^9 p; V8 d3 K( _, H
[trade-record-all]of self
' K) o% O- U% O. l4 r/ f& \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( r; }; B+ Y+ C3 w  R$ A+ x  B
4 H' g5 G4 c4 }; `1 Lset [trade-record-one] of customer item (([who] of self) - 1)1 o$ \3 M! G& ~% H4 X% d
[trade-record-all]of customer
% ^' E) w" T& w( a  X4 b7 O" A- B+ W
( T1 I" b0 ~2 F( f5 {: u
set [trade-record-one-len] of self length [trade-record-one] of self

9 b" g( w$ k* D4 J# u6 W3 U. _6 ]
( j9 e: X* U" \; [; Oset trade-record-current( list (timer) (random money-upper-limit))
9 i0 N, q; y! r6 z: D
- p0 B6 }' g; U- k+ p0 G- r
ask self [do-trust]
7 n, g9 U; _& k: {; V2 E3 \;;
先求ij的信任度6 J6 s! k% _5 g( z3 z
  A; g7 A% Z! F9 w
if ([trust-ok] of self)" t$ {/ `9 G6 D* I' |7 _
;;
根据ij的信任度来决定是否与j进行交易[: N5 {- r' [" a2 @4 J# X! D8 V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 q: \7 R" Z' [3 `

5 U+ K7 I& x/ k[

" |, x% {! x4 q6 D& s0 X& u) _, y+ V5 c( k' C4 I
do-trade

7 o- Z' b4 j1 Q7 _+ A9 N- u
+ c+ }# l3 A* r" z  k6 v3 o7 Qupdate-credibility-ijl

$ J( }, |4 d+ s% S. V% c0 T
; \9 @+ [: V  ]. P3 }update-credibility-list! D; Z0 u2 ~6 ?+ U' a5 j

  z  J$ d, P" b' N- Z9 v. V' ~) w3 K  W0 }3 U' p6 |! K: e
update-global-reputation-list
: A( o7 {; E8 P6 J  ~9 Y
9 }9 {& J2 z& O1 R3 C& R- j+ Q' @
poll-class

7 T+ I1 l/ G4 |( t. m- M
6 F3 }+ G! u) c1 z- `/ j- Pget-color

. A; h% r9 R6 T: Q7 }& h
9 X; I$ W/ e5 b7 G6 h4 f]]
: i+ Y) R* u( @4 y+ f( N+ Z2 `3 ]0 b  |2 w3 W1 f
;;
如果所得的信任度满足条件,则进行交易, ~# }' ^. ]" H3 Q& f* L7 ~! }+ _2 @
4 N5 O& Z& W8 }8 A. `
[

( Y+ y0 k* q4 F0 A+ E" j- F0 `' `! k7 }3 }* G( o
rt random 360
/ g' @/ K- l2 Q( k& _: V
- ~1 s$ }0 g3 _" x
fd 1

9 c. ?% C& O  K  G4 r4 c
9 D( W9 V/ {1 q/ J$ s% f8 P) B3 j]

9 ?6 s3 L7 ]; C4 J3 l
$ c- Z: G" ?/ \1 ?) [) ], jend

& f% Y* w. D/ j. q8 o3 T$ y4 a* ~* S. H* `$ x
to do-trust
4 ?- }! ?) L' S& Sset trust-ok False
) x/ h* |+ m2 D& B0 V
7 \  S! ?) L, L
7 Z8 Q/ C* E# j4 p, X$ `
let max-trade-times 0
, Y& i2 j7 l. }; K! Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 e- t! B: G8 \7 j
let max-trade-money 0
, D) Y6 P" \$ [6 x# Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( _- [, T0 O( ~9 z/ J
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 w* s* u- s9 c5 |, @  @% d- V8 `) {/ g* {7 f2 ?
) `. p# A4 E# g" G  X5 Y7 \" }* C
get-global-proportion5 T" m2 h7 C) X2 d: t* J
let trust-value4 [' D% u. y' ~- G7 B
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)

. W( \! ~8 M+ t! J# ], u. xif(trust-value > trade-trust-value)
. ]1 |' h) [! o* A  M0 m( i+ D% e1 b[set trust-ok true]6 p( H# t- ~' W( h. ^
end
: `: {  v9 o9 X+ h, F# [: U- ?* I6 o0 L& B
to get-global-proportion
# T+ W* H7 ~7 j1 |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 @9 _! x( E- w: M6 k0 Q[set global-proportion 0]% j- Z+ [- r9 I. k* p! B
[let i 0
( T. W  N. }- E8 S- ]% vlet sum-money 0
5 c% \! F+ _: T% l* `4 D2 I3 swhile[ i < people]: l5 O+ u+ o& @: R6 L
[' q- `' _, _3 p' O# H* \4 z
if( length (item i) k" o8 T7 i' C8 ~+ Y1 W
[trade-record-all] of customer) > 3 )
5 W1 p; o9 @$ a" W
[+ [8 s, j0 b* J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% I  C7 d3 X+ j]
- f5 p. ]# v3 e' c& K4 z]1 N3 T: l* t( _& F8 j
let j 0
, i% N3 [5 }6 ^5 ~3 y# ^* x# Dlet note 0; w# S2 y- O0 }- i# n& m
while[ j < people]
% T: ^8 }; ?! \' a$ {( z- c. V5 R- G[- X* c% Q5 ?5 W" X' Z
if( length (item i
' j+ t9 I1 s" e3 l% k- X[trade-record-all] of customer) > 3 )

4 [( X1 M; e) ~% Q! P3 X* }" F[9 r+ e8 f& d8 K8 r  `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 U. M/ l7 }8 f& v
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# Z; R, G# J% E, I: e6 }% N; J. }[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 l- m' @$ x$ C& o, g5 U) m% [
]
/ r! S( b; J( d4 a. T]$ [0 Y! p  `% B/ z& X/ f
set global-proportion note
( w  h3 i  i6 f- o2 `]" g% D6 ?$ Z# m* [$ G
end+ h( A/ \! ~: s5 C. n

+ u$ H4 e! H% a, b+ Wto do-trade
- t. J. r! E% s9 e/ K! J;;
这个过程实际上是给双方作出评价的过程
* I+ X/ l* f, F+ u: R' k4 Y# ~3 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 _% R: ~* D3 Y# `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 e' f& b7 O# i/ c: e& uset trade-record-current lput(timer) trade-record-current
, d# W" t% j; ?" Y* f3 n;;
评价时间' h7 V3 f1 A8 |/ ^0 c# `
ask myself [# \9 S1 I7 C8 H
update-local-reputation/ F2 u$ ~; E) j  b  I
set trade-record-current lput([local-reputation] of myself) trade-record-current4 W& L1 j+ A/ N
]  Q' i1 R$ S1 a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 c. D; |% E0 J5 [( W6 N
;;
将此次交易的记录加入到trade-record-one( a4 E) Q0 _5 V5 W0 N- p! X2 P
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. V8 S, b4 N+ J' ~  Q) ]. y; Flet note (item 2 trade-record-current )
6 ~6 ]( `5 J6 S$ p( tset trade-record-current9 f  R8 |  }3 G+ b" ]7 L. v3 Z
(replace-item 2 trade-record-current (item 3 trade-record-current))
" r. G& @5 g) e4 ^# @
set trade-record-current
% H4 d2 x* n" l% T  L) F(replace-item 3 trade-record-current note)" V0 A6 I1 E! h. l: R% f4 b0 Z# b
8 W* P5 T3 M8 D- Z* A( }
1 N, H% f' F9 Z# U8 \3 w
ask customer [
) v6 ~: i* j0 T. r$ l2 Xupdate-local-reputation
; R* M. @' J$ R* N. h: E: uset trade-record-current* t* |0 J) E9 S; n  l
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 P6 Y; C$ k; F; @+ t
]6 d2 [, ^  R  R; q' x* n5 ~0 }
5 c2 C/ a! s8 J. w$ z' v4 i

7 U! \+ m4 `  Kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, E+ X. p* r, U% u/ B0 o& s
  _" r& I& l6 ~! I9 X6 J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 K) r8 n7 r% r% y/ _;;
将此次交易的记录加入到customertrade-record-all* Y0 j% t8 D& O, g
end4 j8 d' V, n, F3 R

- D$ J# D. y  z8 V$ R. k6 j' ^to update-local-reputation) E: V/ P: |. L' G8 V
set [trade-record-one-len] of myself length [trade-record-one] of myself6 ^) t) \; w- D2 q/ P
+ p( A9 b; N. @
5 D  E/ r4 d5 H& t' j2 t3 n
;;if [trade-record-one-len] of myself > 3

  j8 P( }% m7 _3 @5 f  Tupdate-neighbor-total
( O9 n( G% }% H; i# a& h8 f) r/ h;;
更新邻居节点的数目,在此进行
4 F( ^0 E8 B& v4 E/ E7 z: B0 d  Slet i 3" L5 s* Y# h5 l) `
let sum-time 0
+ ]/ j3 @8 U; X7 x; ~- w' G. _; wwhile[i < [trade-record-one-len] of myself]+ f+ w" A2 _0 m  x5 P# _* f$ M
[
' m1 b7 ]5 n" dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% m$ p1 _2 {  G
set i% F" t! M$ |# I$ \# R# C
( i + 1)
# @* p6 ]2 O, y" N) F2 D
]
: m6 T: k- N9 ~6 w- S/ z4 v# xlet j 3) \. x$ Y, ]8 w, I( `
let sum-money 0
. U5 {' w% B5 D2 k8 b1 iwhile[j < [trade-record-one-len] of myself]" |/ L. }5 w, Z! y. e8 u
[; N, ~& Z; ~% q" L- i2 c; a4 U
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)
! o' G, D  Z  u, U5 i4 eset j2 w' F* q; B$ I4 {
( j + 1)
) W) y2 E7 {$ [  @' n4 R; g7 G3 U  P6 \
]7 K  M& c3 z$ I3 o4 a& [# n
let k 3
. ~' P7 i0 \* E3 glet power 0
0 s2 R6 T& i$ z, p3 V' Xlet local 0: H/ F4 e4 o  B( F
while [k <[trade-record-one-len] of myself]
, Y7 D! W2 {. L/ H% K[
( v; X$ ^; A0 c/ T% J/ bset 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)
% z) G) M0 P# l- n  X0 \  eset k (k + 1)7 P+ u: N+ s0 s6 i) X/ n
]
3 P% e4 M- R+ h( i: Qset [local-reputation] of myself (local)
, w" I4 r7 V7 C' K9 D, K; b& q, L, jend% n. _* {$ S# ?- D) b

& \' \9 h1 ]$ ]0 c% V+ @to update-neighbor-total, j7 l6 q7 q  g* S

2 N* T- f5 ]! c: ~6 Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 ?! ?( Z2 h0 u! h, U% P7 \' }. b) O# I+ {( P

7 _! w) E5 [5 {3 |/ n: Q( ]end" `3 c8 A( H( S- ?
( A" P2 B1 R2 R3 C) |3 Z! ~
to update-credibility-ijl 6 a0 c! x5 }* ^
! v+ k* A* j1 T, `
;;
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。
9 @2 G# X" ~4 E1 X/ N0 elet l 0! v& X# C$ g& |* p1 r( V
while[ l < people ]5 n5 \) W; y1 [
;;
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
3 S6 I: j9 K8 X9 _7 r[
" Q0 I$ e" c  ]/ C" l( m$ \7 wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( I" o/ ?6 L5 C. J( o
if (trade-record-one-j-l-len > 3)
9 n) U4 Z9 l2 d' N; G[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# ?- m' J6 |9 d3 O
let i 3; E! H" D7 C2 d9 v
let sum-time 0- ~2 `6 T2 i+ s8 {% Q
while[i < trade-record-one-len]
- v: s/ _" U5 o5 P0 g& t* C[/ o. R% W! t6 L3 m, W
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- s! s2 y. X. y3 w# v  L- Dset i
: ]5 o! k1 X4 E$ ]7 m: v( i + 1)

5 i$ C/ O+ X5 P' o; T]
0 p1 p5 i5 }7 ]/ \, Q" E) clet credibility-i-j-l 04 {& G. v- B- E7 s
;;i
评价(jjl的评价)5 l: O8 X( |6 W  j. r* {5 H. D
let j 3
) e, [! }2 J# I+ jlet k 4
3 Z3 Y- R- \' R* O" V; Xwhile[j < trade-record-one-len]7 U& Z$ k1 v  r+ X% t" ~
[3 A3 H6 }9 ^0 }6 c
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9 `0 H' }+ {6 x% `8 j2 _
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)
- j) a! b5 Y0 I1 Bset j
% U# z9 M$ s. \1 Z; E( N( B: F' \6 I( j + 1)
0 |& i$ n7 F* L  a1 j' }
]! k( O+ j6 W( U: y8 a' w
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 ))
1 B/ c+ J% c$ b: ]9 N, B) j
+ K) n/ B( P, O- @  y5 r3 M

! m  b$ D: @, v$ vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# R! d$ l0 N* Z) }- b4 `" K+ w" D
;;
及时更新il的评价质量的评价
1 _$ M8 P9 L7 h9 I" Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ Q  V% s  t$ M- T' c6 G% L! U
set l (l + 1)
) D# i; b; m( [) f6 q: d7 M]
2 W( b/ w7 A: C# x; L$ b( M7 yend
9 M; w5 u! O2 Q$ g  Q3 w
  m! [6 H% H& f" o2 q% U& |to update-credibility-list% Q& s0 @' }0 G
let i 0/ U" Q) f; L& h) a
while[i < people]5 }+ ^5 C* v$ I3 f& ?
[
1 \* k9 P0 J$ F4 I3 jlet j 0* [! J3 ^: D2 ~" u3 Y+ `) O/ _& V
let note 0
0 a' {7 o* C) w( }( mlet k 0
. k2 ?& r6 @+ n, M7 m7 k# m9 l2 B" u;;
计作出过评价的邻居节点的数目
) l5 {' C$ d. P* ~9 z1 s! _# Iwhile[j < people]8 n1 o. B& Z7 c( p$ A% R( A( |2 |
[* p0 x( i, s0 Z( i) R! d
if (item j( [credibility] of turtle (i + 1)) != -1)
/ m5 R2 Y: J5 T* R: f) w;;
判断是否给本turtle的评价质量做出过评价的节点: I* w- P8 h* w: t; Y
[set note (note + item j ([credibility]of turtle (i + 1)))- s+ |+ s- J2 r2 v" p/ N; N
;;*(exp (-(people - 2)))/(people - 2))]
: Z5 R: A4 J+ e; `5 ~# \
set k (k + 1)& k) s! f! ]/ y) v; k4 N+ H
]
! t% m8 e1 a% h6 C5 `' qset j (j + 1)0 _1 ~4 G1 r2 y. S, a" D+ R* v
]
/ I9 Z4 E6 P: @" C/ @& `set note (note *(exp (- (1 / k)))/ k)
, \% T: V7 B% T, k0 K/ @. b1 Lset credibility-list (replace-item i credibility-list note)& Q# b* `3 l/ M7 T* u2 K8 f
set i (i + 1)1 q9 u3 O9 `6 i9 ?  g' [
]( j, [2 i7 S' E; D' Z' J
end
; Q8 l& i" f; b; T$ m) ?2 W4 x) O: r+ l: A3 E! L, l
to update-global-reputation-list, {6 L0 f7 b. v) a& B% m
let j 0
9 H) Z$ P, t. ?* y9 Nwhile[j < people]
% ]& ~1 Y$ l$ Y[$ D5 T8 m  f$ o  c
let new 0# W- q. F4 P! W: N7 j
;;
暂存新的一个全局声誉8 A, \1 A3 B( j9 D- A! `
let i 06 E& A/ E6 G3 o0 L# W( {# f% [
let sum-money 0
$ v. c3 J$ w( p! O1 B1 L2 w* Hlet credibility-money 0
  H% L* d, C3 X6 u* h8 b; J  M$ uwhile [i < people]
" ?  B/ d9 P# d* H[
9 Q! H: b# ^/ {6 J% lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 o4 n! B$ n7 f4 ^( T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 A/ _9 k5 x, {3 v' W
set i (i + 1)6 D% E" J9 i, H/ ]! ]
]
% A; a, ]. \2 a7 U+ S8 ]5 F2 f, elet k 0
1 z& X* G0 c3 ^! q9 Mlet new1 0
' F5 I: }& w* w: [% l. T& Ywhile [k < people]8 A0 i" v* U8 t/ e. @7 Y& `3 \
[) y6 N. U. T) `  L# q6 D- Z6 q
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)' F. m/ H8 y( K% C# w0 U$ l
set k (k + 1)
" @; R, E1 m/ w/ }5 x1 ?]& L& W  v4 @. f$ V2 p/ |8 F
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 R' \3 ~" G, u8 n8 Aset global-reputation-list (replace-item j global-reputation-list new)
  y7 q' e" A9 Iset j (j + 1)8 Q5 D4 j, o' }3 |2 R  r7 B
]( S0 y. F" j! ?- h* G: \
end; N- D6 u  D  Z6 k1 Z3 h: D9 W
5 Y, H$ R% B1 B4 @8 r: p9 y, [
' m( `1 T3 t3 m- {
$ w  \. x% p7 G. [% v
to get-color
0 L' V3 t: I( b& k& J0 T. M8 W! I1 }! v0 a' U! b. u1 P. ^- I
set color blue
$ n3 [. h% E6 F- Z9 y" s3 a
end
% j1 r3 P: p6 i, s
4 a: F; x) b- X2 _to poll-class
/ Y5 L# B/ e# L( m1 f# q, vend
/ D3 n& v8 l; [4 v# u* I3 Z5 U, Y: R
3 H" H& m) _# e# eto setup-plot1& ?& W# t0 {5 [6 Y* q
0 V& A8 B6 }) y; t, P5 j+ a
set-current-plot "Trends-of-Local-reputation"

; z' }1 \1 D2 j/ y
$ {$ G5 C4 \. ]& j. d2 {; C) wset-plot-x-range 0 xmax
6 [' ]& V% [  I* |3 G
! O# \  d9 C# m" f
set-plot-y-range 0.0 ymax

( D. q# v2 m5 o7 mend6 F. {/ Q! X5 I4 s7 W
) e3 P# @9 O0 @+ m9 p: {% {
to setup-plot2
- J) |# s( }; L$ }/ Q! ]. p, B
; e# f' N2 t" ?1 i* ^3 Bset-current-plot "Trends-of-global-reputation"
9 r  V8 i6 ~+ R

8 [! {6 y7 ^; t4 \( G4 Lset-plot-x-range 0 xmax

$ A. d8 m* a2 w& B$ T  B; b+ R7 q
2 k0 B* F) M  O* r- E! [set-plot-y-range 0.0 ymax

  [* u2 q2 A' {+ A# }$ Kend) Y( q7 Q( _+ y! f$ U/ O3 _8 t
# T2 G( d1 `; {( p  g( R* @
to setup-plot3
/ v- T, L6 a; _, s" \" o+ u* L9 k- i) V( s" R' `
set-current-plot "Trends-of-credibility"

8 l) D. U! z3 u6 A# o( \& b% q. x+ m$ J6 N9 f/ G
set-plot-x-range 0 xmax
$ a( |* M$ G8 f3 j

$ @5 k; E! g* x' zset-plot-y-range 0.0 ymax

) i# p$ r! `8 j& yend
4 y2 i# q4 h0 m2 v7 a9 H, D, D6 @, W: _2 T1 O# `
to do-plots  O9 h1 M" F. v% T, z- h
set-current-plot "Trends-of-Local-reputation"& S, c. K+ [( z. J- g5 s7 d
set-current-plot-pen "Honest service"
6 p/ r! o- k' j" N: L+ h% W/ Kend3 U0 T0 Y: a/ Y9 b  z! }
2 {1 i4 U# y6 q1 J" Y) g
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
4 W/ f2 r& @( x* ]2 B4 Z- w' q5 P1 z2 I7 z
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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