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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:
" ]% V( z5 c( {( w$ I+ E, Zto do-business - ^( `' e& S5 Z) S& z- |7 K) A
rt random 360
0 r9 A% [2 T# Q7 \6 r7 i$ K fd 1
7 U/ U) w' V- U# `/ t- l; _( a ifelse(other turtles-here != nobody)[0 C0 t. G' [7 R3 N9 _
   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 s; {0 J- y. E# B, b; J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & f8 Y* m5 O* B4 i, e) X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& W: S( ~, G3 h/ _& b
   set [trade-record-one-len] of self length [trade-record-one] of self1 c. U& h1 a: ~
   set trade-record-current( list (timer) (random money-upper-limit))
( P/ @, W( T& d1 T( |  {9 G& q+ `
1 a6 a4 r* m/ b问题的提示如下:
1 {1 B8 U1 \7 c8 v6 L% _& m/ K. k9 |0 D, G2 O: s% N
error while turtle 50 running OF in procedure DO-BUSINESS, H% E: t% f4 z' m0 J
  called by procedure GO
! u' c  x" `: X3 r, iOF expected input to be a turtle agentset or turtle but got NOBODY instead., }$ d0 W; g" O6 H8 G
(halted running of go)
) W* R, A* E& o5 `: G$ R- l  S2 k! z+ R( j$ w8 T7 J8 M+ t
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~~" g4 D6 `: Z5 }9 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  \. T9 R5 n  t# g- x  e6 N' {
globals[  M& [8 e+ Y) f) G3 N6 K4 q
xmax
+ [( v5 d( Z# Rymax$ \2 B" k# C( w
global-reputation-list
+ z7 q+ L5 H# q# F
* X7 B5 ^4 Y' E, @, w: m  Z;;
每一个turtle的全局声誉都存在此LIST
2 z) A+ p; c, y& A9 |- c  N' ocredibility-list$ C) }- I2 o8 L% h9 T- a
;;
每一个turtle的评价可信度! z" s% y% n) W: m& t, B# @" _
honest-service
5 t% P! c& i% j& u, j' _( s: aunhonest-service" j& O5 f% {( K2 @+ n# W
oscillation
% G% d- |; e9 b0 @  T  f( trand-dynamic4 w' _! I6 U/ q$ t, X
]% L+ L( @1 P: }0 n6 d$ W5 b8 U

! C; c9 ]3 H0 A/ Sturtles-own[
7 F% p7 s' N* M& ?+ S& q3 R/ y( wtrade-record-all% w" J8 d1 O* Q* h7 B7 d
;;a list of lists,
trade-record-one组成
% }# b0 ~2 K. ^& V0 M8 jtrade-record-one4 p% F; Y5 G, Z" 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& V. F# y3 n9 C! J1 b0 c

, T* C4 u+ J4 W) O& S;;[
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+ w: I0 I2 t9 ~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]
; k5 _) }# ^, N3 _7 fcredibility-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
  M( S' m+ X7 R2 B9 _- Q3 i  Dneighbor-total
) |+ N* M8 a3 j$ D8 b;;
记录该turtle的邻居节点的数目* J! `2 v% h' q4 P
trade-time
3 x) h4 `9 O! S7 U5 ?;;
当前发生交易的turtle的交易时间5 b3 l9 @$ j# \4 h4 J* _
appraise-give
3 }3 K- _' A. M! P;;
当前发生交易时给出的评价
" v& k0 C- w  V  l' Sappraise-receive  V) T. Y. j' W6 l# e
;;
当前发生交易时收到的评价2 T; H5 \% J' t# Z  M
appraise-time
# c  M- x* g" C8 {1 ?1 Y* g9 x;;
当前发生交易时的评价时间
8 M" Y- G4 x) o8 plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 j# L8 B4 s* ctrade-times-total
. V* v+ h1 c2 _+ ~% o;;
与当前turtle的交易总次数% ~% U& I: O# T& ?. o9 y
trade-money-total
- ?% q4 u4 V; K$ @* m0 X;;
与当前turtle的交易总金额
8 K) v* c4 m8 |5 p+ s4 xlocal-reputation
7 o' W$ u, N4 o7 K" A0 e1 Nglobal-reputation
- }* m0 L; |0 ncredibility$ C) {) o+ [+ X( L" S& R3 x
;;
评价可信度,每次交易后都需要更新. g$ P# E5 X4 e9 J' A& z
credibility-all
0 j; ~; H( v* v* t* E;;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. A% W5 B$ d0 b8 q3 v) I, ~: L

" G9 v0 r, `/ {;;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: h" f6 R4 ?7 G1 e" r/ y2 F! a+ j; r
credibility-one* A7 x2 h. p9 W4 w" 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
8 W0 U* x0 }. @( Y4 V8 Uglobal-proportion
$ x2 y  o3 ~$ s6 U- c/ xcustomer
/ l9 ?" e3 R1 }2 l7 Wcustomer-no
, \2 l8 B' D6 l& h! rtrust-ok
, Y7 @3 `7 c/ c% A0 [+ n" atrade-record-one-len;;trade-record-one的长度
) ?% o) F% N0 j% I5 Y4 x]
! \6 x% ]6 S6 G% B3 Q- D2 \0 ~. x, p+ w
;;setup procedure& {( @' T& v1 H* @& F

, l* O2 ]: M& }) X; \" W% t' b+ cto setup
: w0 S% |4 Q; e8 \1 A" d- m6 ~( |7 y2 W6 g
ca

7 X$ x. M3 q% d
. A9 E' X# N4 Kinitialize-settings
  ]- [9 i1 z8 [

+ y0 d9 B4 X4 e; X8 kcrt people [setup-turtles]

. g  ?6 i) G5 e. X+ Z+ o. o- P$ h4 i& W3 h" v
reset-timer

. z/ y5 D' G/ K$ E1 B" o5 g3 H+ K% j- b  a4 @2 t; b- [! v5 K4 u
poll-class

) B+ u+ C2 J1 C7 R( S, ?- e
; z5 P- g! M+ c! Z" m5 o8 fsetup-plots
& T$ m* \$ r3 d5 o' O- C6 H; K

; ?" c2 I; s1 |  U+ d+ Edo-plots
/ r. i9 o# e6 `6 ^) Y: h
end
! J$ U. u& R* L  E' @" g& O8 q9 Q/ j  S+ b" O9 O3 r% t
to initialize-settings
5 P: q& C2 O& {* S6 f7 r) @  }, A3 B
set global-reputation-list []
" K5 q- P! p% Z- c& L# z) G

4 B: Z2 w& q4 C& X  lset credibility-list n-values people [0.5]

% V7 g+ e  U9 l) `* J7 Z# Q& N- ~& h, R8 d/ W
set honest-service 0
2 ]1 a6 \" ^0 e) p
; R( E' }% C& Z& T* n! s$ q, a" c
set unhonest-service 0

7 A5 E4 o, {" ?2 O& N# g* f6 [$ G1 s/ z* L$ }
set oscillation 0

  V: A1 V) ?- r. ~0 |9 k! d3 g0 N$ x  V6 `. V: i& l) ]) _
set rand-dynamic 0

5 L. e& R! c! t0 f1 {end# |$ L* Z* {6 r9 C% X% L( z% l
% S5 k" e! j/ b4 W' D5 h
to setup-turtles 7 [+ a. \4 \7 R9 K$ k
set shape "person"
7 _3 B- v& ~) _8 L# u  w+ p0 d& dsetxy random-xcor random-ycor/ j4 n. _5 D% c- F& A0 c/ H. G
set trade-record-one []
) h: F4 n2 a. [; H
% r! z. ^" ^7 l2 V! `
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 i, s& o8 a* F# y

2 m+ G" g6 h: Q% W- bset trade-record-current []4 ~5 ~) `$ J8 Y9 T4 S" N7 Q
set credibility-receive []) ?& n9 M( j6 |$ Q2 S, c
set local-reputation 0.51 y+ Q" G) d8 m( a: c" i" k: h
set neighbor-total 0' r; o2 J  Q* g+ }
set trade-times-total 0
5 e5 J. e" D) m0 E6 Q/ T, _* k' f4 Mset trade-money-total 0/ F; P3 G2 `' K# v
set customer nobody
/ |( O. ?+ L" I" {1 y6 Lset credibility-all n-values people [creat-credibility]
3 o5 J9 ^4 S+ N, a1 ^6 l2 m7 Aset credibility n-values people [-1]" c- H7 q! ^0 ?- K6 }/ X/ [2 B% d
get-color; ^: ?' K$ }  D. W/ [

6 X, A* s0 I) D4 ]end
& E. W' Y, v' L: b( H  ~$ A
" L9 s9 v" C/ d$ K- @2 J2 Dto-report creat-credibility
" y' t7 g6 R' P" |report n-values people [0.5]8 ?# g$ w7 r* Q# N
end% ^5 x7 }5 c# u5 m  O
* I7 m7 x! r9 ]2 H9 p2 x
to setup-plots
5 Q, r1 {1 N' {/ O- s/ b# {8 \, x  l' z$ G
set xmax 30
* n0 d, \1 E* X2 t* R8 r5 T: D, p

4 i7 m# P) I3 Oset ymax 1.0

( p4 k/ |- V' b% r; z; Y& E
  {& }4 V; U; u, Zclear-all-plots

: O, u6 }* _% f4 ~9 @3 V2 h. n5 t
# ?/ T" v5 M! W9 P! `& Osetup-plot1

' B8 H2 }  h  h/ k( W  R" m  c. P  H9 ^4 ~: Z) Z
setup-plot2

, w3 L) i8 |( c. C# @$ v$ Q
) W0 w" M% n6 _8 Csetup-plot3
* g, u0 X+ Z5 z  A8 `6 |$ D/ ?% E  p
end
7 q8 f: W6 ]$ I+ `# ]+ h* R6 m" _8 e  ^+ ~. x
;;run time procedures
& o9 z; Y6 h% k: {
# D  b% `7 _0 S" R9 Ato go2 s& t! J1 C5 j& `/ F

& I$ _+ I- f( L/ A4 I. Eask turtles [do-business]

2 o+ e; ~6 n# d, mend
# f2 d: N8 E! X# S( B+ L+ z; m- @% b' h5 B) B
to do-business
% A, V! H2 A4 @! Y! z; o
4 c1 x, D! c/ i5 y
, n3 g7 u1 C& q; g! i
rt random 360

4 w3 f/ Y( J, E7 w7 P0 @) n2 M6 t$ d
& k& c  p% x+ k" Bfd 1
# n2 _9 t6 e! k2 a
% C0 V5 p" F) G# Z$ T8 D
ifelse(other turtles-here != nobody)[

  N3 u7 L, a. V) x
8 F6 E: ~. d( r/ L$ _+ Lset customer one-of other turtles-here

( V5 }: p+ M0 ]5 q3 r* N+ g7 J: w
& S) `4 }3 u- q;; set [customer] of customer myself

5 u; G  N  i$ r4 ]* a8 p7 q  T
! J( j: W' K  ^) wset [trade-record-one] of self item (([who] of customer) - 1)
- A/ \% O' N3 U7 v9 z; o) `[trade-record-all]of self
7 b* m* ?* ]9 n8 \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 U6 P; E8 T; _8 A3 g5 }# U9 Y5 f* C" Z: M; P+ f$ O$ w
set [trade-record-one] of customer item (([who] of self) - 1); {5 {7 a  E: V7 A3 n5 {1 l- X
[trade-record-all]of customer
! i+ u5 C) j" s6 y, V

' A2 e! U1 H0 d* @' T  ~1 D' R  _set [trade-record-one-len] of self length [trade-record-one] of self

  ]1 n- M% H6 }. H. {4 R" Z: ?' i# B; [7 E
set trade-record-current( list (timer) (random money-upper-limit))
1 m( k8 |8 f8 W# {* a7 [4 _7 {5 e2 j

4 p! l. v8 |! L2 F6 F, rask self [do-trust]( X# {7 U6 W. w* K8 G
;;
先求ij的信任度
; W3 e. W% ~& a; E" n. y' t* X. n8 [& E  Z$ ?; V/ r. S
if ([trust-ok] of self)  \7 E% F- D: z8 [% p/ }$ _
;;
根据ij的信任度来决定是否与j进行交易[( S9 ^7 q. ^7 E  i" J
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& R+ R% k% h' |* n) J. V7 }" ?9 E; X- u4 N( z) v
[
' X/ G" F( k* S2 \) t% r

" h% F  ^) H8 F! j7 g0 Rdo-trade
. e9 A7 A' q0 i  r

/ {  G+ z8 A  {$ H; V* L' S9 ~update-credibility-ijl
4 n6 d$ y: t. d8 ^/ `
7 ^- w6 Y- D. a, n9 j
update-credibility-list
  m9 L8 ^( x3 s  S6 U; c& k

' V+ @. U" O. @& }$ t9 S8 S! I# U' d
update-global-reputation-list

$ K# X4 Z1 G. s/ S- X; c8 `: k
0 G' d- o8 W/ X% Npoll-class
; s# X) a9 l, x0 c3 n$ h3 e
) A0 `# o) Z7 C  I6 E5 L/ a
get-color

( G( F' H/ H/ j/ w" x/ V+ G& s1 q
]]0 u/ ~  i  M9 P- n
: }, k* ~, q* f4 t
;;
如果所得的信任度满足条件,则进行交易
$ {7 {4 l  k3 h" \) W2 s
) [6 D9 X( Q, i+ w. t: R  H[

! g! x7 }( D+ V5 g
7 r4 G2 @3 i' ]; g; ]5 a- d- I! R$ Drt random 360
: X2 ^6 A- L9 n5 R
! S# \# D$ ~. k% G8 D0 |  a
fd 1

5 U  q: C- m0 V- x' G3 ^! l; m+ l
( C) B8 {: G: Z3 i% D! R]

; a- \% g8 K# p4 ]
9 C) N* V+ ~2 ?' ~; m4 R9 c. Fend

5 T' @' U, D: {9 f) z) q
! j. V! X2 a; ]- W# H6 j  Lto do-trust # d4 u6 P% k) T# s/ b2 s
set trust-ok False# ~1 l  i8 ]6 M9 a
  w& G# A% K# c5 X, A7 `
& R3 X# ]. P# _, y, }) m
let max-trade-times 0
, _# c6 v; U: \+ |7 ?; Cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 h' [: l9 ~$ X5 X: s
let max-trade-money 0
% b" G, A# f+ Z$ [  e7 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: m) K  ]3 f. W( ?4 x& i& Z  Q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 e' k% a4 w* Q
2 \% B. \* D& @2 [
3 t' \# N& a& r
get-global-proportion
2 L8 R2 r. O3 s) w* flet trust-value- J! F2 Y& _) l4 J  q2 D# g; H
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)

; Q: X; |7 M5 Aif(trust-value > trade-trust-value)
5 i1 o4 {3 a8 K! C8 o; v* Z' C- |8 O[set trust-ok true]; U; q. |, d- Y2 u' t
end/ i4 t! [" ?1 W- d7 [
/ C2 ^' k: \! I$ i" m% \. Q
to get-global-proportion
( B3 ~  {6 I5 V+ e2 ]4 aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. f4 g& `* ^6 Q3 i9 _6 T7 @[set global-proportion 0]
  J. H7 P" N! Z, o[let i 0
; o0 W  G0 N, |; Olet sum-money 01 W( J' U7 ^( `/ T
while[ i < people]1 Q" S+ y& u; m
[  c% F& |, }& a# F& R
if( length (item i
+ y* _8 [: R* j% b# `7 J) k$ ?[trade-record-all] of customer) > 3 )
0 J2 ]  ^* Y" j- Z
[& u1 a; h! I0 p8 s6 a) O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) o; q2 L# `2 I, C- N0 a# U]
: l8 h, x/ W. h1 f( j7 j1 S]
& ]% X9 P% k- F  T) |% llet j 0
: h  {5 H( c( l8 i" r' z* olet note 0- l' u2 o& Z; J3 K) v. v0 U, w, e
while[ j < people]+ E, I/ i( E+ {
[
/ b9 T3 C) b5 I$ h8 e( Iif( length (item i
$ s! y3 ~  V2 b[trade-record-all] of customer) > 3 )

/ Q" U* M4 ^- h7 J3 ?1 q[
- N4 w5 n3 k9 f  c1 `8 e, I6 a+ D3 Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 J: G8 @6 F# ?2 q; c+ E+ p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. b0 Z5 h* u  i/ `+ G4 \
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! ^8 \! ]2 E0 n4 I6 f' x]; {# ~) t* ]+ _
]2 G5 y  C4 J. _) J- K: ?
set global-proportion note
: d7 d# z) ?3 g9 ]]% L0 ~- S7 M! j% i
end
5 }( M6 `, v" _+ Z* L3 x
) S$ `, P1 l7 C; d6 O; v0 `to do-trade
4 i+ k1 r+ `# x1 @: v;;
这个过程实际上是给双方作出评价的过程' n$ f0 d$ @) W0 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 Y2 M- x4 U$ e2 M, j5 ]8 K  m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- f! U# o/ R9 t; v& n7 z
set trade-record-current lput(timer) trade-record-current
  U- x6 b8 _- Q# M! ]. \- W;;
评价时间. T- E. Y; R7 E3 @' {, R
ask myself [8 g$ X: |8 N- b8 `% U5 Y
update-local-reputation# Y. O4 \9 g3 ]& i& N* _
set trade-record-current lput([local-reputation] of myself) trade-record-current  O) C- }# n9 I. m8 Q
]1 Z+ q, [$ K' M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 W1 N1 o$ e3 \% H$ I5 Z3 l;;
将此次交易的记录加入到trade-record-one0 S3 a7 ]& _  g4 d. P, q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" D6 h  a( }; m' Q% n* Ylet note (item 2 trade-record-current )
+ N, K4 p- o1 r8 Hset trade-record-current4 \! E- k7 ]/ @9 m. t; p
(replace-item 2 trade-record-current (item 3 trade-record-current))
* V% S" I# r( w% T6 u) B
set trade-record-current5 T; n" w& w% c0 t* V2 j, E
(replace-item 3 trade-record-current note)
' E( I- d0 q8 p, @6 [  ~7 |( x
5 B5 Q5 T5 ]' D+ Z
0 z& i1 l- l3 @( J+ B7 s6 |
ask customer [# |8 m) K2 \) e9 m
update-local-reputation" o; c! [( V& p/ T1 b" @
set trade-record-current% g$ P* E2 V3 b2 [4 `9 X$ Y! L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 O; v- l$ s  V, w$ E]$ E' n& V- s9 m. S6 i4 I. ]
: D* p. l  p2 y7 [

4 \2 s  _% ]$ b2 z* x6 Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- T- q9 d6 |5 ~' n/ y9 c
  U( {* x  Q, }+ y1 R
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& \: W! n0 L( \4 P;;
将此次交易的记录加入到customertrade-record-all- W3 \  z5 P7 y" ^5 r# p
end, k( F5 i: q- c/ L/ s: m5 E

3 a$ Z% M; V8 ?# {" }9 rto update-local-reputation  c5 u/ J- A1 Z: d
set [trade-record-one-len] of myself length [trade-record-one] of myself0 G7 Q3 p+ @7 N$ y$ @, ]- ]0 s

- g, y0 d7 G& F" B* I+ ?. f, N# M4 Q
* n" M: u8 Z  N* P" X;;if [trade-record-one-len] of myself > 3

: O! I3 C" c0 O9 gupdate-neighbor-total* @. Q9 B9 Z  Y' q* M' C; `9 W& i0 i: W) b
;;
更新邻居节点的数目,在此进行
7 A. p  k  P# V- K7 T* f% ulet i 33 }+ \7 z5 i. [. {5 o8 X
let sum-time 0( G5 T) d. C- ~# t  O4 \2 l  p
while[i < [trade-record-one-len] of myself]+ z& Z1 ~4 p- r7 |+ F5 h+ t) g
[
: y; {7 ~! _. C& z& a  A: A# y! vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), \2 N+ n/ w1 Z; E! i- j
set i
7 F1 T* d( L) _  M3 ~( i + 1)
# \: M8 [3 T! z/ x/ r1 u6 F+ C
]
; c: A9 W' O3 ulet j 30 ]1 w2 m- z$ b6 A% Z
let sum-money 0
! c+ F" n! z# Q1 }3 Iwhile[j < [trade-record-one-len] of myself]
- e0 r( n) S9 `[
6 O% ]1 L- e4 O3 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)3 {& N6 _5 X2 r0 ~/ R% T
set j8 W: b5 w7 Z+ j' R; K, F6 r
( j + 1)

' o) q; [: h. ]- F" z) r]' ]: M: g8 D% ?, k# a
let k 3
& |& O; s" U- Z* v- n" h. Wlet power 03 o3 x6 G! W% W/ r
let local 0
; V5 m+ K& \) z+ ?  `) \while [k <[trade-record-one-len] of myself]" h3 P5 F& y' N* K0 J/ c# S0 e
[. b5 A6 t, n+ `; y/ Q7 m
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)
: z& S6 x3 n! bset k (k + 1)
* b/ L% I& \: y6 O]( \1 v; r/ c9 A
set [local-reputation] of myself (local)5 O  b" @" }4 j3 ?
end
9 R7 r4 l0 c9 Q6 H  ^2 }. S4 S; n. U
% I$ e1 l9 B1 k* lto update-neighbor-total7 a- ~8 d( o1 k. t/ Y5 ^5 S  n; a

( \" B3 l" |; T& x9 \  E4 }/ ?if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& w9 Q+ r" F/ L& W- i0 {$ I' c2 C

+ l) F" p+ J- _! p8 ?
! _: M  j7 |6 x+ o3 o+ [( v
end/ z+ t. x8 ]5 N7 [" b* }2 Y( k

# J9 C0 j8 I" ato update-credibility-ijl 2 S$ c- C! }0 Y+ ~9 Q$ h
" r4 H8 Q5 v  R6 r! X  c- J# _8 Q
;;
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。% `+ n8 j" `: Y0 N! ^0 X+ i
let l 0
& m( J0 l- u7 z, [while[ l < people ]
3 B' h; A8 f- F- Z8 I. |: D;;
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
9 Q2 _% m3 d' }  Z9 E[! m1 u$ N$ [1 E: y0 R' k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 w! e" L; x4 w& i. Iif (trade-record-one-j-l-len > 3)( n* l  V, a+ X3 i, [; @
[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-one6 i0 m% w- B/ v% q
let i 3
5 ]9 E2 i7 X; E( k) u( C: c$ glet sum-time 0
' o) Z! g9 J+ v$ G. [5 g2 dwhile[i < trade-record-one-len]
4 w( \+ [& i. |0 F2 ^% @. a[
- G# i1 k4 I8 P! Q2 e! Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! J- F, U3 ~" Qset i
, m# x. U2 Z3 C) K7 F# ]$ |( i + 1)

; b/ |9 o  U" N) ?4 `]# q% _8 t3 w! X) }, ^3 e& e
let credibility-i-j-l 0
6 c" {; d3 e9 T# L9 N  Y3 Z;;i
评价(jjl的评价)
5 h+ F" ~8 ^1 R. p! zlet j 3
( w3 W. l# C2 Vlet k 4
# y; y* V9 N& K3 D1 G; zwhile[j < trade-record-one-len]
$ D* x, X# `0 Y2 J; K$ D[
7 |2 x5 O/ o! [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+ ^8 j, k* `& y8 ?/ P' R9 t7 ?
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)
, g, G4 \- V( Y2 ]* D' Oset j8 h2 ?+ Z) n5 H0 \* R' m
( j + 1)
& q) r5 S* R( |. w; z4 x
]
  {, ^4 O* N, X# Y3 A; 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 ))
1 u1 [, K  m( S9 W2 ^5 r5 b1 p' j
* R- \- G+ Y2 a2 U

# u% o2 w. Z7 M9 wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 k/ M# ]0 k. m  t0 F" ]& o; ~;;
及时更新il的评价质量的评价- e  k4 `/ W0 w4 e' P
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: }4 b, a& D7 k, hset l (l + 1)0 `+ ]/ W5 U) n
]; w+ {+ f. m+ S9 q/ f0 R) j
end6 D6 c% E) ~, U& r
0 N9 D% D' J! Q( \: \5 X! k6 A
to update-credibility-list3 p" A8 v1 Z* u% P3 ~/ x) P3 G
let i 0' v6 J" w3 C9 ?# |
while[i < people]' t4 ~  L0 r6 h1 r0 x, d/ m1 I
[% I4 u) D5 b! D$ b, u' O  {
let j 0
: V  i/ J( y5 r6 F8 plet note 0
% ?1 s* b8 w8 Olet k 0
) _. O% V1 A! Z+ a  v;;
计作出过评价的邻居节点的数目: n  Y, W! q) ]. `8 ]' O7 |3 H. n
while[j < people]
7 x" D1 U* X! K/ p[
: p* w' K0 u6 ^6 R4 ~9 V/ I' L9 nif (item j( [credibility] of turtle (i + 1)) != -1)
9 b8 W5 n& R) [) J" `2 Z" X;;
判断是否给本turtle的评价质量做出过评价的节点
- U7 O0 T- v$ b$ _" t8 N1 |[set note (note + item j ([credibility]of turtle (i + 1)))
# J- p: u4 p% m;;*(exp (-(people - 2)))/(people - 2))]

0 ^) g0 V! s' S2 u3 Y, Zset k (k + 1)- Y% ?# y! q6 K
]
' t: q9 @; }$ ?; d& J( ^( ^  sset j (j + 1)6 j, g9 t) `5 o5 Y3 b7 ?% l, I+ u
]$ A0 V( O7 e. ?
set note (note *(exp (- (1 / k)))/ k)
, S0 [' F5 o0 H5 ^6 nset credibility-list (replace-item i credibility-list note)( ~+ t6 T# i4 O/ W4 R" n* I
set i (i + 1)
7 |2 O: Q5 t3 P$ J  x]
, N( l: X& e. Iend/ C: p0 \8 h+ L# I! L) r& M  i
, ]  E$ ]) n: K8 Q3 R3 R
to update-global-reputation-list
5 i0 ]8 _! G! @* Q& Klet j 0
: ]! W  U) ?8 dwhile[j < people]( \( e. H7 T6 r$ C
[5 b2 M; g. S# C6 s
let new 0
0 N5 B% n8 t& C) Q! m: ]4 X;;
暂存新的一个全局声誉& l+ `; V+ y2 D; O! M
let i 09 S* I' \5 x4 ?" O
let sum-money 00 {4 M6 E# N: F* [! j' j" Y
let credibility-money 0+ [- C( k6 s  I3 i
while [i < people]
: [6 d' D4 H' p& {; O% l[
. A) Q, ?' B' J$ U, @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 x3 g* ?3 V( i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& n, r; \9 a5 p* D0 T$ \set i (i + 1)$ x/ d7 y6 Q8 h& b: f6 |$ c
]* E9 f# L0 E: ^# [" U7 b1 x6 q
let k 0; u0 N) _! H. q; L" A$ q
let new1 0% T2 f4 n! V" t  u4 S6 s/ D- ]: o
while [k < people]0 O( d" q+ j' R
[) _- P# _6 P5 l) l+ s( b# ]; D
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)
% A; b8 p7 O/ [; [0 S8 B" C9 wset k (k + 1)) W* e7 P; S! \, L  K9 l' x* c
]
, |9 t# N. q' y9 t, x) V) `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # t* Q1 k( L) O" M  A; ?% D
set global-reputation-list (replace-item j global-reputation-list new)! I0 l  i( D* @; R7 ~7 o
set j (j + 1)
4 a; r! r, Z' `; S2 b5 Z) |) z]
4 k) c# V* d+ Y* i/ f! m) Uend$ F+ ]: g8 s% i* o+ I9 B/ s

2 x# e0 c, u8 V% |& {5 m' o7 a0 ]+ Q" M7 g/ K( c' i4 O' f

' p3 n2 X; k* X! j. |4 `% Q- T5 uto get-color
) r: Q, p3 c: s9 x% k& U  D' Y, g4 D. U5 d# A
set color blue

& l/ m) D/ P; V& send
" s1 O; I: ~: _' z) Q* V
0 ^2 ]2 T7 w1 Gto poll-class
& o: p6 g3 g6 v" R5 M. ?end
, Q1 p, R% S- t+ U$ m4 p0 d* @, v: p  y0 Q: x4 v5 Z, o
to setup-plot1
: E9 O) t% g' ^) @. o" q' P) e0 m  D! p  C
set-current-plot "Trends-of-Local-reputation"

* T! E) Y! U" K  i
7 Q; G' D( P) \4 d% u, S5 m" nset-plot-x-range 0 xmax

7 j+ E4 [1 B4 q& P% ^9 R: ], S" x' ?1 @7 q4 _2 k, I& e
set-plot-y-range 0.0 ymax
8 Q# J, X, g: R  v: G' l  v* {+ z+ C
end; a0 w' l; w5 `

2 I$ g$ ]4 r% L/ A( dto setup-plot21 T- C0 A6 e7 t/ t4 a% M& j8 }  t2 g
( c0 V; s$ e+ }3 y0 n) Q3 S
set-current-plot "Trends-of-global-reputation"
/ ~* \% c8 j5 e. `' b

8 `2 Z# o$ i' v( Pset-plot-x-range 0 xmax

4 {5 a# N* L, _
% N9 P4 E8 W# ~' a% c. s0 kset-plot-y-range 0.0 ymax
- c! C: \8 y) o+ b5 Y
end
5 n* L. @1 q4 Y0 f- e+ l1 X( I
) I6 \/ r1 h4 a$ {! Qto setup-plot3
. s0 ?' j& P4 J3 w0 }
5 Z$ X  ?, G- Y& c4 @set-current-plot "Trends-of-credibility"

( J. u. K$ _& r" G) s: B. k. e; K5 d( w( E
set-plot-x-range 0 xmax

& _( E$ ^' c2 m9 V. e  n; E8 b$ s- [- t+ j0 i& L, U2 Z6 ?
set-plot-y-range 0.0 ymax
4 ^& q7 i7 F, `. v
end7 G4 a0 N6 P1 y( N7 H7 j) ?
+ f3 t9 t  Q4 T, S( V4 N% I) J
to do-plots. Z1 Z9 f7 P4 k; d: k* C# m
set-current-plot "Trends-of-Local-reputation"% P( @/ Y  D& `, e
set-current-plot-pen "Honest service"% t* n4 i+ u# X6 k. c' r
end2 k4 ^& W4 z7 W; H( N

' ]3 u  r- A" u[ 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.
! F! c5 F* U* B& j& p: J# C
- L1 G* S( G$ ?. ?1 t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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