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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:  B; y+ I: V) A: L9 {: f
to do-business % z5 f* f  C* u* o$ r0 Z
rt random 360
$ j3 v8 F& Q4 p+ ~ fd 1
0 a) Q+ ]  B# `7 m  o1 D ifelse(other turtles-here != nobody)[
# [8 ?8 o$ O8 |1 W6 r; @4 Q   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.
: @+ @3 p6 S" [) p; A$ \6 F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 {( F4 Q. _# I3 I) E3 P5 M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  A# X1 D  M5 g/ S4 D$ G* M" o7 g6 n   set [trade-record-one-len] of self length [trade-record-one] of self2 b4 ?6 ?) `" h4 W% F' L4 s
   set trade-record-current( list (timer) (random money-upper-limit))
' y( J# ^9 T; M1 B+ j( {! o# Q+ h* m3 C
问题的提示如下:& N. z! m; P! d* c* u' j

7 _( V$ ^9 J$ T' A7 _9 J7 w4 @error while turtle 50 running OF in procedure DO-BUSINESS
1 ^0 @, y- X% R" |7 ^0 q2 H9 U! t  called by procedure GO
; N: d0 O4 u+ [+ W3 N& ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: J9 F1 K8 j8 p! F6 g# ~( d
(halted running of go)7 B; l' }; s# N+ v# C

1 z8 s1 H& l" z6 b# B8 d& N* N+ j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~~
7 z7 f) j! U4 d: O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$ w5 B8 [) r: K/ I* D: U$ |
globals[% u' @  u; Q2 i! n7 N( D! m
xmax
$ t- q, R& f: j7 @ymax( K0 I! A' z: q# s* t- j0 g& f
global-reputation-list
% m" T9 w& K5 a) D* U9 K5 o  u( T4 D3 Z. [! c0 f. Q' S$ Y  S
;;
每一个turtle的全局声誉都存在此LIST
' X) Y( g: B/ D( \* z0 C; bcredibility-list
8 O+ {. \) L  V;;
每一个turtle的评价可信度# H! c4 V) |& \* [$ G; _
honest-service' ~& h  b4 E! r* D- Z  V
unhonest-service
  N/ K% X( [$ f4 D3 L% T0 foscillation
2 w- S6 N! O& _. `! z9 drand-dynamic3 ?5 a9 ]2 _- ^* [
]
! o' {1 F# O/ J. @
0 K9 K1 t# w1 i  Cturtles-own[
/ p% Q+ Y. v9 s  }* U% Ntrade-record-all: f- j1 x& a% ~% e0 S. y6 V
;;a list of lists,
trade-record-one组成3 _& U  R. f* N0 H# k, {9 Q
trade-record-one
; x/ c5 @& F/ y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( D# [0 [0 X/ u: B% S
7 Z' r8 s1 s& s7 M/ s" ]$ a
;;[
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]]
# T& F( |* q- p9 t% B# ztrade-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]
* Y" U4 t' v& y9 p/ c! d- V# t7 Ocredibility-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# W) Z) B! r. f, g6 f
neighbor-total1 n8 n% m0 \! q5 Z8 ?
;;
记录该turtle的邻居节点的数目
+ A0 l" L. g  Q5 l# M; h- \4 ktrade-time
% j( T$ o8 d( ]' m% O* s;;
当前发生交易的turtle的交易时间
7 ?6 n" p5 P+ E6 e* L) Tappraise-give
. g. t0 I5 w2 f+ I) ];;
当前发生交易时给出的评价
" J1 f7 l1 Y# x6 N8 \* vappraise-receive! G& S; U5 z- I9 b% Z4 |% @
;;
当前发生交易时收到的评价
' I0 P4 Q* r' e7 j! O$ {appraise-time- I4 H! G- g% `/ h, Y
;;
当前发生交易时的评价时间0 t  M* H. I- ?6 C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 T' y5 h9 R. {trade-times-total
# \7 F, k$ Y2 P* v' Z;;
与当前turtle的交易总次数0 ?' Z$ S( o( ~4 q4 {8 O: O8 Y
trade-money-total& U3 w; Y$ W+ h$ r
;;
与当前turtle的交易总金额
) o+ S. I7 F* q: r6 f. G4 s, \local-reputation- I* z  z5 I; P/ g' V4 I2 b. I8 m% H4 E
global-reputation' v1 X/ W: T% M/ {$ W& S
credibility
$ b( c3 d  H& Y1 g" v;;
评价可信度,每次交易后都需要更新0 G) n- A6 ]0 S, k8 L( \# d
credibility-all
# @2 P/ B) X8 n3 \& O;;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
) I$ n3 K. `+ h2 f
8 V$ d) }3 x4 l6 m' G9 d* Q4 C& Z;;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
% v1 A$ K  T8 s: o, |credibility-one/ R$ G. y" U. d( d' P6 O
;;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
5 O9 M* }$ i* c8 i' Rglobal-proportion( U: B0 a# H7 C7 r9 e- s
customer
- e9 R0 d6 O, hcustomer-no
  T  o% ?, x9 h3 ], o! ]; r% Wtrust-ok
' N9 u! Y8 y+ D" |trade-record-one-len;;trade-record-one的长度& y  T2 `' Y* f, I
]
$ D2 C: u7 x0 Z7 C! P
& a/ g# r: o8 x/ f* @3 x& t;;setup procedure' ~# o- F  w* F6 i8 D
0 E* @. ]) s# {* w
to setup
' C% R: Z5 |( o% e  u( D! n$ ?) I2 m2 c# ^
ca
- p0 x8 U& h1 e" m: [" \/ Q
  M2 K: |& d- g, l! r* g
initialize-settings
: j  h; x. g3 u) L: V
# D: d3 W0 Q, _: ^5 U( X' u0 |9 H
crt people [setup-turtles]
1 I- I5 [! J( K5 l- {. i

7 ?% Y  L' {* p8 s1 Z5 y2 }: f1 ereset-timer

2 M" u  @0 j' e/ [
# w- c+ x! I3 G4 \poll-class
' P- e- m8 V5 k- d8 l
! G/ V& ^9 I" t3 H$ T
setup-plots

  t* S/ X$ e! a6 K6 g: a! k: y6 v, R# E# w, {6 g; `$ J* F
do-plots
1 a  O; ~; G  [+ w& N$ |) s
end# M" I0 d9 ]( Q# M
7 _1 Q# N6 M2 G3 t4 i. z8 q$ H! O
to initialize-settings
) @- `, {9 a9 Z7 y& y! B' ^0 g  _' T
set global-reputation-list []

1 \) Y  _' f: G# u' d* X4 Y6 {
, n2 t( {7 ]" ]1 }% Tset credibility-list n-values people [0.5]
8 ^4 m! _, T2 J2 M6 }

. ?3 S8 J. ]& l2 |set honest-service 0

/ B+ v0 K2 G$ U1 l9 r
# N) y  J& C5 i7 ^" \% Cset unhonest-service 0

; c% I6 l0 z6 M) N9 E, O) t, x1 _
; k+ L% K$ Z' F7 ?" M# ?1 Mset oscillation 0

/ T; |8 S2 L- V5 M/ T* O) R/ M2 p* d+ U2 R# v' F
set rand-dynamic 0

0 [5 a3 |$ J" L! m9 C' t  Eend# R7 e1 p. t+ E- ?
- I* v, K0 b; r! d2 A" v* j
to setup-turtles
4 B8 z( h& p, lset shape "person"+ u. U4 p3 J: A0 ~- r) L$ R
setxy random-xcor random-ycor) _- j/ T; @1 H
set trade-record-one []
4 u0 z- C5 m& T
$ d6 p) c( w8 G6 @: H
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 L* x6 `& |3 C* |  x
% H% ~, {+ t# D" v; x
set trade-record-current []
* l3 ?* u8 W2 t7 P1 @( P/ zset credibility-receive []7 i) S( m" U2 v+ \8 a/ v2 l- ?
set local-reputation 0.5
8 R  w, o1 a2 b) ~set neighbor-total 0- v4 `9 Y5 L3 y' Y  L
set trade-times-total 0
, i& q" a: z( y' S* {set trade-money-total 0
) a' w" P2 w+ j6 s- `set customer nobody
& H7 w( o- Q4 x. nset credibility-all n-values people [creat-credibility]$ @7 D1 h6 e- [( @4 S: A
set credibility n-values people [-1]* y4 W* v! h- g, l
get-color
6 N5 ^0 N, x9 ^4 t

) i" |* o+ L+ P; N, R/ w3 fend) ]3 Y3 s0 m9 D9 W
( R3 d. r) q! M. ^6 {  k* H
to-report creat-credibility' }6 X6 ?( c. [
report n-values people [0.5]( a& `2 p4 t' ?' _
end
4 Y) E* u) Y8 ?1 j5 O; `  N" b5 [6 P. ?
to setup-plots
3 c- D! M6 \2 O6 z8 |+ J
" T2 I& H+ D4 c6 t1 j% Cset xmax 30

0 |3 Y6 @6 G1 P& M% L+ N
6 p, q& c9 A' c- y" jset ymax 1.0
  k4 k( x: D8 M. m% b) H8 O8 Q4 Y

  K' W0 {$ S) uclear-all-plots

. J5 I3 J7 ^5 s" b  Q9 f3 F2 M( w" R; n$ C
setup-plot1

' \9 C( \1 ^) U8 \" s$ h8 M' t9 o
- V0 |! L, f; s& xsetup-plot2

" S& ]/ A* y( w' |. J7 G: [7 [- v$ `2 }
setup-plot3

+ |# v8 ~- M3 D0 }. kend
1 \9 c) M# P1 N/ f$ s9 r
# w5 ~' N% b. q+ s;;run time procedures; o; [9 p3 T. ]

4 n" {9 z/ J+ L+ N3 \" F! ^to go
5 w1 T3 k5 P- l  s8 |5 y9 A. H7 r& m/ i6 S( m
ask turtles [do-business]
; Z0 O) ~/ K& N5 j# m
end
4 X' A7 Z7 d+ `% K
2 `: I5 V8 c1 h3 A% Rto do-business 4 `$ \) t; ^7 U3 R) G! Q6 `2 L( ]

9 [0 c7 N5 L7 F; F1 j1 }( k4 T9 w; S3 l8 }4 F8 f
rt random 360
* K. }( q4 D) n  ?+ ]4 |

  B% K" w9 t# a# l8 Wfd 1

5 T/ @  W, a" q
+ a0 P- @1 {: A5 Difelse(other turtles-here != nobody)[

4 b# s4 [+ O% j+ H* m6 J/ G0 R2 K  M! E! @: o3 u/ L$ G
set customer one-of other turtles-here

& K2 V5 P6 U) E: b1 `: L* {) \  A0 _3 z
;; set [customer] of customer myself
; `0 `- k& ?* v- B; {

$ j0 P6 E4 }! ^6 ^set [trade-record-one] of self item (([who] of customer) - 1)# m7 ?* g( S! o, h: N; }/ G. v
[trade-record-all]of self+ e$ _4 Q+ R2 ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: U) o% j7 ~7 @- _) y( p: i

. `# P  _, _! I' aset [trade-record-one] of customer item (([who] of self) - 1)3 r) X1 c8 N! G/ S6 h- }/ }+ |
[trade-record-all]of customer

. F: D, z% I" u2 y" W! [
8 r/ l9 _, j( m& o9 _set [trade-record-one-len] of self length [trade-record-one] of self

* M  Z  e; V  J( i: j9 H$ p4 o" V% |  t. v
set trade-record-current( list (timer) (random money-upper-limit))
3 ~. j" _# T5 g& c4 q" a- k
) J  K) n# L8 k; v
ask self [do-trust]3 t' W7 _5 Y% r, T- P
;;
先求ij的信任度
; e- F) f6 D7 O, |- e7 j- K! ], ]) \7 N2 V' m. s
if ([trust-ok] of self)
) q3 u2 o. [, |  T4 m# k8 A;;
根据ij的信任度来决定是否与j进行交易[) H1 t% w' k& |: }8 y% p9 }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) V$ J* S1 m( ~' n

$ b2 o* S- k5 ?5 F: Q[
/ e' H; t* r# k! L9 a% P% j
6 o. z4 @$ u' V
do-trade
' k8 J$ D. a0 K! c. B. r1 c! R

8 B5 ~& n; X7 z9 uupdate-credibility-ijl
; o* P0 R; d+ w* @$ m
7 B9 e8 k% U* e- _
update-credibility-list; }* p2 b; ?% O7 L

# {% \& i7 z) H& r% I! [% o0 S* m! b- C4 J7 x
update-global-reputation-list
( a- c4 v! |/ e. R- j/ Y6 j

3 ^! o' p/ {1 H7 J+ q$ I$ l) Gpoll-class
6 q" D# ]7 _" a) d- C3 g

2 V' V9 T! B1 Z0 y% c, t; Y% lget-color

" s4 M0 R! C: }" R& u7 ^' ]3 d: m  v! v/ P( b( d" @
]]
: e" n# n2 W1 B: }
0 {6 a5 O  d5 A& M( J;;
如果所得的信任度满足条件,则进行交易/ ^+ E7 Q. Q2 n

9 ~0 \( Q, s  G- n[
/ T; v  i) \# x

; v. s6 C1 y9 Frt random 360
/ }. y! P& a0 g7 V: L# q! o
/ K0 e1 W- m( l2 z7 X6 ~! _! A! Y
fd 1
1 z+ s' H' e2 N9 y
. I  L+ @4 ?! @2 p  w" [7 s* n
]
  O4 ?2 S. E$ S2 O- R+ d7 ~5 }. p
# o4 l) d5 q5 `9 r# F
end
1 W6 m0 G8 c, N  g% g* _4 ^2 f9 T2 R& [0 q
8 m' M7 h& s- A# u. E: Y3 z+ m
to do-trust
9 G6 }! `" |! ~8 Yset trust-ok False0 Q0 C% Q' ]9 I9 W/ i& O* m% t

9 q# `: `& ]  \) Q' ~4 T" \! ^( p  x4 ~

! l7 f6 I' b; a6 t# t. nlet max-trade-times 0& H; J% P5 n; V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. n, z8 ~: I3 U$ I- T0 i8 Q4 F* nlet max-trade-money 0
1 c5 M: N) y' @9 _9 S+ mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 M6 h7 [+ r* r" X7 m0 U- H8 u+ ]let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' p% s: F3 l5 |  E% m
3 y, v) l  D% w

# O( D  W# p# `/ i0 V( Eget-global-proportion
% w6 k/ r3 s; V8 O3 ~0 d/ elet trust-value; a) _* ~0 L1 P+ I6 B+ `( E5 ~
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)

# S7 Q+ z) n4 }0 @3 Dif(trust-value > trade-trust-value)
; }7 V/ @  s4 l5 b- A[set trust-ok true]
+ a' g, u; c; r3 P  ~* R. gend, P! f  D0 y" e# o# B
2 F, D$ K+ f$ |
to get-global-proportion: B9 j) w( `- O) ]' X5 a3 m9 E: K4 A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: _$ B7 @0 l# [/ w  A; H% n[set global-proportion 0]
: G# `* a2 P3 q) u. D4 k[let i 0- ~0 v" [' {) B2 ~4 N! _
let sum-money 02 B, x; G/ p" m1 L/ r
while[ i < people]- b/ R5 j8 n$ K% s# l+ q& V
[
2 I4 v. i% K" m0 R1 b. E' H3 q' rif( length (item i. @8 ]+ |) V( c5 n
[trade-record-all] of customer) > 3 )
: W& I/ z  I; x% h$ K) N* w
[3 l6 R/ G& C, p, V8 ]( Z( t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' I# O+ ]9 y; e7 x9 b% ^7 V/ u# o
]2 X4 @4 H: K! a' p) j
]
4 m- ?8 K$ _% Plet j 04 }) s* }* i9 T/ _- \' D
let note 0
1 D' X7 ^% t& |, u* [, a1 Zwhile[ j < people]
% P& y) v9 a/ ]& [2 c9 Z& d6 d7 Q[& k; T, Y8 C$ ]1 g" L5 f; y5 ^/ V
if( length (item i/ P3 J, N6 u+ I' Y
[trade-record-all] of customer) > 3 )
3 l* V* ^( ~5 s2 n5 I+ l" ]7 J
[- ?) t) h$ H& a& _/ ]6 }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 h8 r+ `' z4 j* h0 G. E' `
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 G. P8 e  }, s+ U0 B) i( U0 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# B( t& [7 B$ F; i' e/ q2 |
]! C4 f' V8 K' D' r8 P+ A& Q- f
]
/ \7 P% w3 P( q, T2 E% `8 u* ~set global-proportion note
: E9 w1 U( Q; r3 ?6 O]
: I( W* \7 M$ A- @/ ~( ^end' J, I+ y8 C" }. R1 q8 }9 z! t" j

, ~/ a9 ?& ], _  ^+ n! a/ K$ ?5 |, }to do-trade9 M; w( l6 e/ Y( F, w  s
;;
这个过程实际上是给双方作出评价的过程
+ a9 E! N5 b! lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 r1 \# d7 A$ ], N  w. Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 N. f/ {  I8 e. k! s
set trade-record-current lput(timer) trade-record-current/ B. K; E7 L# Y3 |+ [' }. v/ q
;;
评价时间0 Y5 G. s) P! ^: [6 C0 J: s5 d- p
ask myself [) [% R/ R6 k! c; H$ [% P/ u
update-local-reputation
4 W: L# i- j9 u7 Pset trade-record-current lput([local-reputation] of myself) trade-record-current
! t  o% y$ p0 X( X. e) X% z]
9 P$ J$ y4 z5 ?5 u/ Zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ J2 S+ A. i& ]) V8 u+ H- {
;;
将此次交易的记录加入到trade-record-one3 p( p  K; `. v, F9 R( O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: q* W3 @+ p1 ?- zlet note (item 2 trade-record-current )
: j4 F' R& U6 T* R' ^  w8 S8 yset trade-record-current
9 `# a: [3 F) \% l- v% C% m(replace-item 2 trade-record-current (item 3 trade-record-current))

$ z" l; j# B1 B; T% ~4 t3 tset trade-record-current4 x* t( a$ Y+ {  d/ ?7 J7 e1 e
(replace-item 3 trade-record-current note)$ x& \2 ~! p6 S& s

3 ^8 a" R. h+ \4 S& k8 O7 W/ F8 A0 ?

0 m8 r( K0 c' \+ `( `ask customer [% `! C3 L6 Y, w* x2 R0 n9 ^
update-local-reputation! @8 u. X! \/ ^# C! G" X2 s
set trade-record-current
: N. |" q! F8 @$ f: I+ z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  z. ~* }/ l: e5 f, K& a
]
0 g; V" b8 E3 M# K
$ z/ ]5 _. S9 J! ]. I

* D  O4 o3 ?2 Y1 `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& A! A3 y, R4 V4 {& u+ K( |( O

  _, [7 m' `5 \5 Qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' J- X1 U8 ]; x;;
将此次交易的记录加入到customertrade-record-all* z" H' o9 m# [" s
end& ]7 b2 v* t( ?, |; i% L

( t; [- O7 e% e. j0 J! Fto update-local-reputation( j# \" W! X" }; U1 n# k# U1 N
set [trade-record-one-len] of myself length [trade-record-one] of myself8 X5 W% c) Q: c. d

' I! d& w7 F  z7 O9 g4 B+ I% }# |2 |% [
;;if [trade-record-one-len] of myself > 3

$ v7 i- @9 s' D* {# w$ r1 ^5 `( Qupdate-neighbor-total
0 D( _& u" f2 _" D7 j; {, q;;
更新邻居节点的数目,在此进行3 {+ }% F+ U. i9 d' N, k9 ~- a' n
let i 3. S' g7 E0 D/ h, L- F# ~1 ^
let sum-time 0. P9 S+ d) G0 ]0 [$ z# }: [
while[i < [trade-record-one-len] of myself]# Q# {0 z+ n+ W" |2 R- `/ m+ u
[
  g* e* u* L) I# L. n/ |& tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 w/ `% B; _) c8 u! p! F4 f
set i6 M7 e0 b- b9 y) h8 V0 |
( i + 1)
0 O9 [, C' t+ F9 e8 x
]$ m: |* M( R- P4 L/ u# b1 `9 D, T
let j 3$ A. g3 v! c  ], F1 i) X  ]
let sum-money 0
  b  l' @4 T. H  r, N: Iwhile[j < [trade-record-one-len] of myself]& l5 @# P2 i) Z- S* z; e4 [
[
0 i8 h% {/ A. L, `' S8 c. ^: xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 I3 V( M. m5 n8 |; o4 Iset j
6 w0 n3 X( Y4 y4 N9 J3 ^( j + 1)
; r1 F8 E: Q. I+ L
]6 P: ?6 T6 l3 C" I: i2 w
let k 3
. _" t$ r. v4 V6 }let power 0
: B' S0 u- S2 ]% I; b' C2 G0 _( elet local 0
7 C8 v9 w7 H6 C! `8 j8 d8 v0 b" Ywhile [k <[trade-record-one-len] of myself]
# c/ }- n! f3 l[* A  P( c5 u2 G4 V# @2 B
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) : X* [0 t: U5 V  [. {$ M
set k (k + 1)
/ U3 A7 b  ]8 A4 j" g7 @  Z: }]4 a  _- b9 K' l/ Q/ S3 L3 w6 e# q" I$ t
set [local-reputation] of myself (local)# m1 t% z. J5 ]6 J5 P! `1 Y7 J; E
end0 j# p, b! l5 G3 k1 {- m

) r% \9 p! Q# M+ S  fto update-neighbor-total
: M. E; T5 k# N2 m7 ^* [  e, [6 Z5 t& F$ |6 {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) M- I5 K4 h. W& u

1 v8 `# O- N; T" A

  _4 q5 d( q/ C, ]end& M) ]$ J! Y* R

* T# P: H' [2 ~. _7 a' e" }to update-credibility-ijl ; b+ {4 b7 h/ \2 Y( G8 M$ y  w7 t
! ~7 ~2 H0 z) f; M: P' z
;;
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。* j- |+ a/ |6 a, k3 ~* b4 o
let l 0: m& c/ o) \% q: W  x$ B# d
while[ l < people ]
4 p* x. F7 @0 k& m  q;;
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8 L- B/ e- `$ a$ n+ q" G  O
[
& o$ x% k/ B9 n6 o0 K& }, s$ |let trade-record-one-j-l-len length item l ([trade-record-all] of customer), J3 \& L4 O0 n
if (trade-record-one-j-l-len > 3)
4 Y$ _- J9 G, g6 W! c( L" K5 J+ M* a, K[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' F. V9 _, w; i6 ]$ x: m9 z
let i 3! s/ m, V4 f$ y7 W
let sum-time 0
& w2 r1 J( y' Q/ T( ?; V) v+ }while[i < trade-record-one-len]
' }/ G; O0 C( O7 ~[
9 m0 a+ ^/ a! L- t* ~; L/ zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- [0 l1 ^7 x$ T  a9 gset i
* l8 f' g# G6 ], @& c# K2 [( i + 1)

6 X5 O9 X' v) j4 R/ P]
/ V8 O& R  x  I( p) Q! G4 Clet credibility-i-j-l 0; u( I' }2 O4 e
;;i
评价(jjl的评价)
5 }6 u& \, P( flet j 3
* V8 f/ z" x) l! ?! L/ Elet k 47 A0 W9 ?, B: v, p: p
while[j < trade-record-one-len]3 {% ?- C* d4 u; J, a
[
( D, R- Y+ o0 ]+ n  |) pwhile [((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) k) R4 c9 H& p: o3 [
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)
: M8 B* B9 d1 P$ K6 b3 }, M5 wset j$ c: y  m3 _1 {4 u/ G# f  Y
( j + 1)
3 ]- j. Z$ U( r+ |+ n! j) l
]
" ]+ }7 z/ {: ?4 ^6 Q" [5 q1 Aset [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 ))' h$ ]3 k/ L( c8 u

* c3 [) ~# S& X9 `# f- I

8 n3 s8 G! P8 O& N$ Q& X. }+ d; ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- Y8 G; f% J  `! d$ ~
;;
及时更新il的评价质量的评价
$ h* l0 D; @8 w( E% nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 i- F, [$ D7 @5 Zset l (l + 1)
2 {4 T) y. m, @]
1 S! ~) \2 Z3 l  D; E. C0 cend
* }0 P8 s( k1 U8 _0 T6 I
1 c' O2 X0 G9 \. cto update-credibility-list
9 G- z4 }) R) V' r" |let i 0
; ?; Z% O' A, `) e& Swhile[i < people]
% g8 Z2 k. m3 U5 ~8 U, I( c[
2 |  ?+ A( y6 Q" x: ulet j 04 r8 H) a; L5 j7 Q* f
let note 0
% M/ G/ ~% k5 K0 f& ~7 S- I0 Llet k 0. @2 |6 k1 O- c
;;
计作出过评价的邻居节点的数目
) C% \9 i0 @6 C( e/ }+ f' @while[j < people]
* [0 b$ q( D# D* U[
4 ]/ v' N7 I  m4 L8 W9 f1 tif (item j( [credibility] of turtle (i + 1)) != -1)
( x1 Z, x# q2 X9 s9 W5 S;;
判断是否给本turtle的评价质量做出过评价的节点
' }. G2 y2 a0 h7 B; v/ N+ _[set note (note + item j ([credibility]of turtle (i + 1)))
9 j) r+ ?. ~- h3 C" `- V+ y) a;;*(exp (-(people - 2)))/(people - 2))]

! B! {' e2 K( y* [5 h0 c1 `( O; Aset k (k + 1)
' }# d$ Z1 ]) k; `9 h7 o- L. y]
0 z4 L7 T0 C& Cset j (j + 1)
) x  d" H. D& E: |' Q]
8 p0 O1 `5 V- b# `( K2 ^set note (note *(exp (- (1 / k)))/ k)+ W6 i7 o% B7 @) A% c) }& O- `
set credibility-list (replace-item i credibility-list note)
% j- C/ u# x( |* uset i (i + 1)6 u. H+ R! M" D. E5 }
]
1 [4 y% d+ ~: L: hend# X6 [3 ~$ s* O3 J( O
, J1 v8 _8 J4 q6 A- A. e
to update-global-reputation-list
  r& ^: _0 E! ilet j 0
% w' F2 g! p" h& p1 K* O8 Hwhile[j < people]; n! D, j) O# q. F( `
[
( u% v! ?5 B7 g7 F, dlet new 0
: P4 [% o) s% \  G- g/ B8 u;;
暂存新的一个全局声誉6 @* F( t8 Q  _
let i 0
& B/ ^2 d9 K! W) k; X! m; Plet sum-money 0) ]: P% x% c/ H6 a2 ]
let credibility-money 0, j' Y7 V+ {! w% e2 H  S
while [i < people]# Z& y2 j' H0 E, k
[
4 \5 Y, Y& N9 Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, y: T) M, }- f  B" ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! C8 C; P, M' \5 I( Nset i (i + 1)) C8 Z, M( ?. f- j3 T  D9 ?+ ?; H" _
]
3 a: ~# |  k) X8 X  E% plet k 0
5 Q( i* w; F+ f8 }; Hlet new1 0
1 B5 D$ `8 ?7 R& f, d% Owhile [k < people]* w9 ?8 ^5 z/ \. \; J2 s
[1 }: \$ N: `' l: |" \, H
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)
8 a9 a: j7 Y# C6 z3 lset k (k + 1)3 f( m. G9 t* \. i, v+ U$ ^
]
' \8 W2 _: l% q# Y4 Y9 B, Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# f: P- [3 v; i" X( f' T5 ]set global-reputation-list (replace-item j global-reputation-list new)
) _$ @( a. {( h' g4 X+ hset j (j + 1)
4 E4 J) ]4 m5 s]
. M0 _' Z. h9 i( d2 yend
) w8 ^$ n7 W. w1 B* I
9 C- u8 i7 z3 m3 N& M2 T, I$ R* z7 N0 ]1 _
2 Q' B5 B4 Z6 ]
to get-color* u& G$ Z# f' U8 _8 @  y, O3 Q, g
- d( i4 J9 J5 ]
set color blue
  V+ ~, v  _$ w% ^: p( B
end
% y& \0 K9 \7 ^: M, n: C
* k& s9 `, r9 S$ g/ h9 y- Xto poll-class
- ?0 G+ w! v, C6 m" y* \) bend
7 [; X$ o$ ~# o
& R4 J8 y" ?3 M( c# P7 q+ lto setup-plot1
4 b: o$ b' V: ~7 T1 E" ], w, u- ]
, W0 z1 V; `+ n4 ~5 O$ y( x% jset-current-plot "Trends-of-Local-reputation"
) h/ A% v! `1 y  u
% h! B; Z3 r  F; e: q
set-plot-x-range 0 xmax

$ ?( z5 L, U4 g1 Z1 c5 \; |/ G, C4 b: }8 |% Q7 a
set-plot-y-range 0.0 ymax
, ~  }9 I/ S' e' Y8 `; r1 @
end
" R  i" n4 J- c
8 r- _. U- s4 h5 T7 xto setup-plot2
' N( ?, _7 b2 ~! Z
# N# F; D  d! q  b7 n6 Wset-current-plot "Trends-of-global-reputation"
. V; Y% z* m/ V" b* a& m1 }
/ V7 a; P) k4 Q4 m* d0 F
set-plot-x-range 0 xmax

4 Y7 L6 \" ?9 n/ }, ^9 r
" I* |/ B7 R  i' Dset-plot-y-range 0.0 ymax

/ a& X5 f: y% s/ S& K9 l/ Aend
7 V7 ?6 a7 J2 }2 N' J
" C; U& X: ]. O6 c5 q. \8 Y$ n4 ?" vto setup-plot32 H( }. Q/ t- d3 S1 q% k
7 J/ L) H# R, G) c" f' F
set-current-plot "Trends-of-credibility"

  F0 g6 y, R' w1 V+ _- ~
% _4 D9 j8 \% R7 h; Uset-plot-x-range 0 xmax

0 A* Q: ]3 I9 H) h  K+ i
. {' G( u8 V: ^8 E; Sset-plot-y-range 0.0 ymax
( n. b/ {0 c; E1 z
end% {2 {' R: [7 l/ `
. p5 N& s+ p# p/ q! n
to do-plots
; W! q! @$ U, jset-current-plot "Trends-of-Local-reputation"
, N# {+ N( a6 U, x* e/ q+ H! M1 W8 Y/ Dset-current-plot-pen "Honest service"- {, g: n0 D  K. {5 x/ D% D' ^
end
0 W+ |' K6 I( Y: \3 \5 `+ N* X( {$ q7 O
[ 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.! E; w- Y# Y' P; B
1 f# l7 E  G( q6 W. l! n- C
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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