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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:
. Z9 t! B% T( t# |to do-business
# J! r% _9 T) R+ D* z6 G3 U rt random 360
$ @* V% D' k& o5 H) D fd 1
3 E# `: }! c) H- g ifelse(other turtles-here != nobody)[
& Z3 ]; s% I$ d- g- 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.
& p6 ?6 P* H- d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - d  |+ P% W5 t( F0 V
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 B7 W; H( q" a& {: A( }/ o) l& J
   set [trade-record-one-len] of self length [trade-record-one] of self
( o: r% `- M5 ~/ U+ k! Y# }   set trade-record-current( list (timer) (random money-upper-limit))" ~' u* T, D6 S8 T

. q" ?' p- V8 Z. a: @! }问题的提示如下:  ]  V. K% t; F2 L; x) d2 p

2 d! [  g1 {9 Zerror while turtle 50 running OF in procedure DO-BUSINESS, `! f& G( I. a) j/ [: W4 T
  called by procedure GO
  t3 @  o& F5 _! uOF expected input to be a turtle agentset or turtle but got NOBODY instead.
% r% p8 u1 `5 X3 M
(halted running of go)5 Z1 L. I0 v0 l8 k& D5 s+ b0 {- |

2 V2 S- m! X7 R! j+ }! S" f% Z7 k0 h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~~
" F7 c2 v( T& l4 _7 l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
, L$ E3 ~2 Z6 v* W  W# Qglobals[3 `' P! e& P& s
xmax# H  e) X; M* H6 @# h! o
ymax
1 o) S* l/ o# zglobal-reputation-list
5 {3 |" H" a6 n  u0 W/ l0 ]& W
! R' f9 V$ s5 D;;
每一个turtle的全局声誉都存在此LIST
, J) Q( B) m7 J' J& F& }) lcredibility-list
9 C4 X2 |- F, Y/ y& X6 }$ n# c;;
每一个turtle的评价可信度
: C" f5 z5 ^! {# {honest-service4 O* C  W3 K) j0 h% _4 ?: F
unhonest-service  |& M4 l3 }4 e4 C6 Y, P
oscillation
+ x3 L# U1 z( e* `rand-dynamic
3 b/ x8 S# c+ l/ r8 `]. Z# x6 b7 b* H$ N9 W# [

0 C: Y! L; `7 A" g, Z8 z& ?turtles-own[
" w9 a" y3 a( ^, \% ctrade-record-all7 L, v% s8 f! l- C0 I
;;a list of lists,
trade-record-one组成
) u( q( Q6 Y) j, S4 Xtrade-record-one
' x6 z( X0 `& @* ^;;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 n7 K. b. m- R/ ~5 _

# k. U3 I% D4 n8 s5 p  d;;[
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]]
9 b% I& A; g. g$ A' ^7 ktrade-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]
: q" D3 R4 \, ~$ m0 E; @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
" e/ n4 Z7 y2 Tneighbor-total( [$ a. ^8 B) l% @# J' \
;;
记录该turtle的邻居节点的数目, I/ }6 \& y6 {7 K+ _
trade-time
7 W3 \7 I' Y# N5 E) e;;
当前发生交易的turtle的交易时间
0 L" r+ ?* \! d+ z+ E. rappraise-give. M3 T- |; X, U
;;
当前发生交易时给出的评价8 [% y: ~) u* E% @9 z" C
appraise-receive. B: D# J& {" F' I" `
;;
当前发生交易时收到的评价
5 }% z+ g+ b5 F+ V/ e3 `& }( |appraise-time
' n2 J! V7 S4 x;;
当前发生交易时的评价时间; |8 F, H6 A; q( x4 p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" h# P# u" O0 b
trade-times-total
8 ?+ A) m; [% m1 U' {% r1 C;;
与当前turtle的交易总次数
; R  @8 T2 @) o, k7 @5 t8 [trade-money-total' ^+ a9 \% {! Q  l, Y2 k" N8 y
;;
与当前turtle的交易总金额) E2 x( ^7 W" Y. W5 J
local-reputation
2 n1 G) u: h2 ?: ^' r, iglobal-reputation0 B) Z( Y$ \. c8 P! Q3 p- q5 V
credibility; D* u) A* S9 W! t6 ^  z9 Q
;;
评价可信度,每次交易后都需要更新1 M* N1 Q; f; Y6 A/ M3 |9 w" [
credibility-all* i2 B9 h! D& B4 g
;;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$ u& ]; [  v: |1 q/ ^

5 X; H' _6 c0 z5 U0 m;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5. v* ^& k4 n& L1 e
credibility-one
& E2 v9 B3 E9 I0 `* i8 V( I0 o. a9 n;;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
( ^/ C1 v. S6 `, _6 i7 F* {" ^& Gglobal-proportion
) X  _# {* Y( j! z" @% t4 hcustomer9 ?4 ~' I) E; B, t/ S
customer-no
$ _4 x  l; ]+ w3 G9 htrust-ok
& \' E0 i- |+ o  `  M% z$ i3 ptrade-record-one-len;;trade-record-one的长度
' r, p+ @* d9 ^8 ~7 Y0 b, Q]
( l; j" b4 Z! T3 \  l# l( ^6 k
3 x2 m* }3 K9 T8 U6 a: y;;setup procedure# C% R1 ^  O0 O9 S- G

3 T8 Y2 P; _( u+ ^; z: T- f3 A7 Ato setup1 o& E9 b, j7 B- P+ E

) C8 M! `. @! Y6 [' Mca
! `8 Z( Q/ L4 v! A( h
& O; h0 Q0 Y! U$ [) f  K
initialize-settings

- b0 l# U3 _" b2 c6 S4 B- D2 \7 g1 M! S# h( _+ `
crt people [setup-turtles]
( s/ `" N/ @5 _' t- W

  v# t/ R* l2 N. ^7 o) freset-timer

* G6 B1 ?. W( I/ w* F, A/ p) r9 L. N. R/ E2 e! A
poll-class
* w5 d( o7 ]8 g# q$ q9 n/ Y

/ D5 B4 _+ F# [0 Z+ Csetup-plots
0 c, f/ r5 V4 e/ x* ^1 X( `; s# I  {

5 C) }& q* r$ Q& bdo-plots
5 Y7 X/ |+ i+ d$ G; C
end0 K+ i; f+ e+ n4 {0 M, \7 g
! v" |, j1 x& l! }
to initialize-settings: Q( n# c( Z, ]: c/ M" m! ]7 @
6 k2 }$ i! N0 l8 m; U, _
set global-reputation-list []

2 G( g, s& O- J  _" B
- H2 u) R" c8 S) I  C2 c6 Rset credibility-list n-values people [0.5]

2 X( O# V# m6 C4 e  u/ [- s# B5 \& V6 R0 S- s
set honest-service 0
5 _" i$ u7 o+ B

1 w) m2 N6 x1 }: K; O/ J; d8 oset unhonest-service 0

% J2 d& r2 @. }- Z& V) @" l5 V8 v- r5 r7 j+ @3 s
set oscillation 0

, T' `  W8 f1 f" n6 f( u: r: N5 ]" e, X
set rand-dynamic 0
5 X/ s# L3 O' `) I1 A
end
' G  x6 r! D  j& H% Q3 [* [  k' L& f, |/ [7 c
to setup-turtles 1 M$ V% m* t* \# |8 v
set shape "person"
/ ]& u( G! p! gsetxy random-xcor random-ycor1 U7 d/ E) H4 O' ]
set trade-record-one []
3 w# ?( R6 [5 \8 r5 ~

! q' L1 n8 A) I6 j1 ^& fset trade-record-all n-values people [(list (? + 1) 0 0)]
7 u. g8 \% ]0 q. p4 D, a
8 u# v( w5 r+ V- b3 x
set trade-record-current []9 \3 u7 i4 M, X2 B
set credibility-receive []$ K2 S  M* G+ q: c9 b* K. O
set local-reputation 0.5* d0 I% Q/ D% X
set neighbor-total 07 D; G* l- B- U. t( K* m; [
set trade-times-total 0
# G( _) }, i- N; y1 E  rset trade-money-total 02 f* l1 @' \) h) D) w7 L
set customer nobody+ z/ J! i. [8 M- g0 K- A' M" Y
set credibility-all n-values people [creat-credibility]/ \8 m) b; w8 p3 S
set credibility n-values people [-1]
2 H$ l4 S" s2 W4 ~" jget-color' ?7 A1 `$ |9 B* u5 U

2 G7 Q8 u3 ?- ^. e5 e5 b5 d7 Kend
6 g% I' I3 l# w4 a
+ s  X) @. H2 T0 w; sto-report creat-credibility; ^, j% c- z4 {5 O
report n-values people [0.5]/ `& ~- @! u$ w+ X
end
* r7 W1 s  }1 H+ U/ A
2 R2 m1 h4 f" Y2 ?, V) t$ Z4 }to setup-plots
$ U9 O5 H- i; ~6 s1 Z0 `4 T3 R0 @
6 C- H1 @3 c2 t1 j3 V* Wset xmax 30
8 |& e6 U& `# t6 V4 ^  P& _
) n; y$ k$ T* S& p8 _1 s
set ymax 1.0

% E) g0 O. p. S  j' s0 v3 y! |/ @& M# I9 ^
clear-all-plots

3 y. |+ b$ I% z+ o( A0 H  y3 X
: T; W7 V+ P& B9 T% R: F2 esetup-plot1

' T% ?3 b, J  ?# k3 V
6 T% y, @# Z" ?; l- x& bsetup-plot2

& K* F8 N% Q+ Q
0 P; l7 I# ^1 l- lsetup-plot3

3 D, q2 n) d1 x! bend: z( H8 \9 C" d6 s) J
2 n: B. v  Z* f* a
;;run time procedures+ p2 u/ a* o4 M7 e8 q8 t5 J
% ]! W" h+ l5 g
to go
: D( Y* K. x% m  M( E/ F: A4 ]! R! b9 C: u" O( \" N! ^
ask turtles [do-business]

5 ?/ f7 [1 V' _  G) Qend
& \  Q, e9 F. T1 A, N  B9 S) n' n4 ]
to do-business
+ r9 c$ X$ B& G' j, Y9 m

2 q# V& C3 M2 i4 [0 E; i" Z7 v, d7 ^, z% ]- ~" W
rt random 360

  {# e( G# I3 P8 `4 R% |$ d) L- w  o$ \& }2 V+ k6 `; ~3 ?
fd 1
3 X# x8 A: N# b* {

5 p' O7 `" w- A' s6 rifelse(other turtles-here != nobody)[

8 Q; A$ A0 {, U
1 o  ^" b0 P# G- k% @4 b' Fset customer one-of other turtles-here

. l  z4 R3 q0 q: f& h/ h5 B1 Y  N  ]+ C0 A  k, @
;; set [customer] of customer myself

& u) @+ ]" _: f0 \$ K& u9 s; w7 @  c8 \( A: \8 r5 o' \3 [
set [trade-record-one] of self item (([who] of customer) - 1)7 \# Q# ^4 f. o7 t  V: P; l3 F  W
[trade-record-all]of self
3 \; s0 X6 d; g& A& d+ q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ _! v0 P; I/ k+ j6 F  H0 w, D; P: d; A, j# g
set [trade-record-one] of customer item (([who] of self) - 1)  p$ n3 Q* n. O0 I( W8 W2 k! y" W- Z
[trade-record-all]of customer
" q0 d" b% y- _. O& A$ f

3 V) N8 r6 q7 J- j$ N2 m& ~set [trade-record-one-len] of self length [trade-record-one] of self

5 h4 W+ A2 o1 E
) D& ^' y0 h7 D8 P+ d9 C) Q* `set trade-record-current( list (timer) (random money-upper-limit))

  `. m9 H/ S4 A' K* E5 u; N) Y! Q& |, m' e( c5 Q
ask self [do-trust]0 L5 S' H) |% M
;;
先求ij的信任度
6 i2 Z: c8 N4 H
$ e: C) r7 o5 ]/ P: H  {' xif ([trust-ok] of self)% P- I- ]& @4 R; ]
;;
根据ij的信任度来决定是否与j进行交易[
8 Z* w1 R$ n4 t8 h# R6 X$ F; e  Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, X* d$ k# [) o
0 Y* q  h4 p% C6 K: u" a6 k. b[
" u% }% W: u" D" g* X# \

) t+ S+ D* a% w; A; V: Wdo-trade

( Q7 K% a- ~& a6 b# G) d
2 [3 J) w1 c7 V: Jupdate-credibility-ijl

) U; M0 \2 u* m5 [! X; a/ P
' n( W1 h1 Y; X# ~2 lupdate-credibility-list, t: h7 \, L5 \' L) j2 E

  }$ W! r- P5 _" I
& h5 B/ T  Q0 _) N8 t+ ?% X+ ^update-global-reputation-list
$ m! \% C9 j! Z0 \
" R7 }. I  @/ s2 S5 f
poll-class
7 ?$ [2 ~$ f6 ~5 ^, c
1 H* O6 Q) p8 d6 Z9 h2 u! \& ?
get-color
1 n3 y, _1 l- B8 ~  Q2 i

7 R9 h; Z- I2 y. g]]
* a2 E! x  N7 }+ I! r! J% o
+ N4 @, B1 e7 I) z: g;;
如果所得的信任度满足条件,则进行交易. ?, \; T7 S7 I% y
1 X$ q2 R6 p# B8 w5 r0 @
[

% N, @% h) k4 f% U
) S: {& @6 e- s. `" ]rt random 360
3 `6 m% E' O) P" ^/ b0 ?7 ~# o9 Y

3 h1 d4 W; ~' P" Qfd 1
9 R5 K3 o, K3 c2 t) G- l) a
( x3 _* x: Q/ i
]

: ~5 \8 f( ^  b9 N$ Z; @
" @5 A9 Y, d% ^; t. _! p9 ?/ I+ bend
- Z8 j& B3 F# w

0 ~- n" i" [3 @( Z' uto do-trust
4 Q/ T. p3 a% A9 x1 aset trust-ok False1 D; j+ B& A5 k* a* i) v

4 T0 }2 d' l8 w7 Y- ]6 L

1 w4 y. [9 t. k1 ~$ @let max-trade-times 0
' e( e% D1 t) {) Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ X& V' {' u2 M' V* q/ y: H$ e4 b) Flet max-trade-money 0' X: ^( f! o  D, ~- v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 F( S0 A3 x3 W. E+ i/ S; Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# x- w; t1 e  b5 G1 k8 O' ~' T
( R* Z6 _+ n  ~5 e; P9 o
* R; A: a+ t6 i( ]1 p6 \
get-global-proportion! W- [' y5 P: V8 `
let trust-value
5 N3 J" j: e$ S) k" q2 C( Q) k! Rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( r$ p4 j5 j& W$ @* K% R
if(trust-value > trade-trust-value)
: |5 B2 [/ e2 \% K6 x[set trust-ok true]
1 ]6 r7 I  g, z8 S! S, l3 K$ cend
" ~7 P  r& d5 ~
' |* N% z: K, ^to get-global-proportion' n( [0 p7 d- a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% C) }$ A9 I+ r/ h5 y[set global-proportion 0]
: [( Z) t4 s9 T- p[let i 09 y) b. ?# U" ?0 K) Y
let sum-money 0) d) C2 m/ N. A* A% L
while[ i < people]
) U  a3 H* ?' [6 i/ y[7 [9 q1 V0 Q; ]8 x
if( length (item i3 E1 J: s4 U9 [8 w3 |! D
[trade-record-all] of customer) > 3 )
$ S& z' J' ]' Z4 }1 `
[8 v; t% B' ?( `6 s5 w) H, [2 ^4 T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 j' `& }* [) [- G0 M( ]! J8 X) ~
]3 A5 R9 ]! s/ }+ C, v! K
]  F4 d2 Q" P# l$ @8 x+ i3 n% s0 {
let j 06 V! m7 S( H4 p, }. Q# f
let note 07 T1 f! E! T8 o
while[ j < people]
0 Q8 x' B+ L  f6 D" H) P+ r, e[
1 q# E8 }$ J4 ^% w! Tif( length (item i
8 u- U) @; l8 j& G[trade-record-all] of customer) > 3 )

6 O! i7 ~! {. B# L. e6 l7 ?6 ~[
( v' N9 e5 P5 @: Q+ ]2 iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! r. t) {  N4 Q# W( ~. s5 O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. D$ c/ W- v; `9 }[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) }- Z) G/ u. Q
]
+ c3 L4 C+ Y6 f3 T: H. T5 X], o/ _8 f$ S& c
set global-proportion note
0 f6 w9 f5 H/ A]
7 k7 I1 a* h7 q$ u+ fend
* _/ s9 D. }  h- W$ [3 i# P1 K. b* Y  v" r% r' j
to do-trade
/ P! N" k1 |" L/ ~* \;;
这个过程实际上是给双方作出评价的过程5 u2 E% M# a7 P% w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# g' _; N4 F/ |0 F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 u/ t1 k% y. D& jset trade-record-current lput(timer) trade-record-current" u) e# z- ^% p
;;
评价时间
- F$ j4 }" Z; ], y9 Z1 y2 Cask myself [' N4 t, |% e. F  |/ U! j, Q
update-local-reputation
2 Y4 ^: u, L! o' H" Fset trade-record-current lput([local-reputation] of myself) trade-record-current5 M& I9 u1 l- _' O7 B, g( `
]  a$ y" q" u9 z9 U# Q7 R2 }
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& g- e/ S4 w# }7 N5 z
;;
将此次交易的记录加入到trade-record-one
  Y* l( T5 @# b$ ^% Z# dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 J( T8 s$ \# F( X$ u) w% ^6 |let note (item 2 trade-record-current )
5 I7 ^6 Y! k- n& Gset trade-record-current
, |8 H2 D: g  Y6 j(replace-item 2 trade-record-current (item 3 trade-record-current))
9 i* L% `! M$ d2 |( q& A+ G! F
set trade-record-current6 I& k( ]% B) M- }5 B/ i
(replace-item 3 trade-record-current note)4 J2 x4 I& j/ ~$ K: B& l

3 m* a+ ^8 l4 q
; B; p# }  ?: \  @
ask customer [
( n. `9 f. L! F4 A* hupdate-local-reputation/ o* y7 d+ W. x9 b3 U- ?
set trade-record-current; x6 `: G0 |4 F4 L7 a8 v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 u" m3 y5 r3 Q1 K
]* x' g; \  P% H( \4 s; j

: M( r% K; f1 k& ^9 g5 {

3 p* B2 f, g3 N1 K3 ?$ o. Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# C; T# M8 v/ V% f5 t" e/ M6 ^
- s6 `: \( B% [$ J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 X8 w3 Y- W% f0 v;;
将此次交易的记录加入到customertrade-record-all' R  B  N% n7 C( _4 P  H) w
end6 r$ |  [/ f( i% e

, j( q% G! O# u7 R4 ]) sto update-local-reputation: B9 c; [) y7 G2 f
set [trade-record-one-len] of myself length [trade-record-one] of myself
, }: z8 q* L; U$ H# p
" B; d' ^6 K8 C( l4 K6 S" U) d* H& y# t/ l2 W6 Q7 c2 X6 @5 p
;;if [trade-record-one-len] of myself > 3

6 ]. r1 f& F2 A) ~9 l) Q0 Cupdate-neighbor-total
/ D* n1 m, ~# H6 D% A;;
更新邻居节点的数目,在此进行
! K  y8 M/ P- I" j1 Wlet i 3
7 z& x; l, x! j. v: e/ ylet sum-time 0
+ r6 M. M2 r- iwhile[i < [trade-record-one-len] of myself]
+ [- r" \" P. m9 R' Q[; U7 Y4 C* z3 o* d
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, y' Q/ e1 v9 r# \7 {  E; gset i% D& T6 u- S2 m3 P  N+ h
( i + 1)
5 `" |+ [# h6 R
]" [! n- j8 i$ k7 v5 y, ?: m2 j% E/ R
let j 3
1 s/ [# \5 l, `+ ?, Clet sum-money 0
/ r! q8 L- p3 _! S3 g8 Owhile[j < [trade-record-one-len] of myself]8 @* o- J" P2 _3 {5 b
[
* L* @3 E# I4 Z3 X: Sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( I" N  t( J, Q: m9 x+ pset j4 p2 T: m* o* b+ ~+ O0 g& a
( j + 1)
/ f: r2 Z3 T# K! {$ }+ p
]
! E- y* L% I  g9 i: y7 @  ylet k 3/ Q5 U$ t( [; P) p+ T7 }
let power 0$ c" |# O& Q* A' k% X: _
let local 0& H1 W" B/ h/ q' O) N# {
while [k <[trade-record-one-len] of myself]! l- v  S1 p8 _/ U7 R
[
1 U' R* H/ e3 vset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) - _3 r% {0 Y1 m" T1 N( A6 s
set k (k + 1)! N5 k5 m( O/ H( N, @* W
]8 f8 N7 j  [' L  l6 a
set [local-reputation] of myself (local)# a) j7 Q6 [: [  B6 i
end
: k. X, F- R3 r% |! ]! ~* S. L* R; n
to update-neighbor-total3 Y1 O* z9 R: Q2 B

  Q$ b6 t" f& n" iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 @/ C; X; d, h6 e" p# ?3 |
+ R' T7 c5 }) o" |
1 e' w. F- b7 N! Y% ]2 R
end$ }' U& |/ U  H
4 a+ U' d5 v4 a( K' ?% H
to update-credibility-ijl % _' i2 j1 v* z1 R) i! O8 o
+ M* ?' Q9 t% ]2 C8 [0 J
;;
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。
( `+ u8 K! O/ {4 }1 M# Ulet l 0  K* T! @6 k3 ]: r( r) o
while[ l < people ]
. f3 B8 g. U. [2 ^6 H;;
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  z  g% ?6 Y0 ]4 r3 K$ k: ~7 `
[
1 O+ S( ^& o, k- glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' A9 m4 c. u" ^  W
if (trade-record-one-j-l-len > 3)
# n) G, Z, @( M* h& Y4 s7 B  h0 n[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
) H/ z) g0 ?* W; L% o: L) v' tlet i 3+ V% X' }. ^  j, ?% n
let sum-time 0. `" Y8 I: N; l' g' h
while[i < trade-record-one-len]7 y$ X* I; H0 \: [5 O  H; N; P3 W
[6 t/ c5 \8 \; w: X2 ~4 i0 _; b& Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" q# s0 x8 R) v( g  _9 Q
set i
1 ?0 o% v" a/ \3 j( i + 1)
( X1 ^9 Q  @! a" |) h. J+ W
]
- l* }" W& N9 c" Elet credibility-i-j-l 0
6 o& h( [2 ^* M;;i
评价(jjl的评价)6 y- b' O/ K# R- e
let j 3+ u  n  G; ^& z9 p
let k 4
; G- a5 i4 @" H6 O- {: M( wwhile[j < trade-record-one-len]
0 v8 d+ @' {( n4 M[
4 V) b5 g) H6 ?& D7 v9 Ywhile [((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 v8 {. k- Y; _
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)
7 E8 ~2 X, r2 P  Qset j
8 c( S$ [8 E9 z: U  b( j + 1)
# d) ?2 l( M: {* z
]/ s9 f  N% G  k3 Z( e
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 ))8 T* q7 M% m* W: G

8 l) U2 e% `: A7 }7 R

3 p6 ]4 O& m- Alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 H. W0 R- F, \% R
;;
及时更新il的评价质量的评价
6 U9 e1 h0 d9 n  e4 _) a  hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ [1 }7 W2 g9 f! I0 s: E# l4 ?
set l (l + 1)
8 K% h) D1 {% A]
# v% E! Y( q5 |* K# O  W7 D6 o1 tend/ |4 V9 a1 x$ q* z

2 _2 i8 t. H- e; X" n5 ?4 e- i2 Ato update-credibility-list8 A7 V3 g0 w% p. W- ~5 H
let i 0
+ ^0 I+ @" P9 a( Ywhile[i < people]+ A8 _3 T" x6 h  \
[* |+ M1 t! D8 w9 O6 @
let j 03 Y$ x5 ?! M. v  O/ j7 w' A+ X& @- x
let note 0
  G' X9 h: O8 |. E5 Blet k 0& R" _9 {* c/ `
;;
计作出过评价的邻居节点的数目4 J) X3 X2 I- t) f1 p4 q
while[j < people]
% ~0 v3 z; t% U3 C1 X[) S! \, `) u* s; T' ?% l
if (item j( [credibility] of turtle (i + 1)) != -1). C, R% o0 v7 f/ c
;;
判断是否给本turtle的评价质量做出过评价的节点' ]/ Z, Z' ~4 @. J
[set note (note + item j ([credibility]of turtle (i + 1)))6 W+ x6 S$ E' `2 s: S3 M9 z6 |1 u; S
;;*(exp (-(people - 2)))/(people - 2))]

- K) D3 @4 g( t; k8 jset k (k + 1); {) W: M9 A6 U4 A
]8 |% J  l0 R8 o
set j (j + 1)/ @% s( }) ?* R1 F+ C. J
]
% f6 x4 n8 T/ s; R( V/ eset note (note *(exp (- (1 / k)))/ k)
* }( m6 j4 J% h$ Jset credibility-list (replace-item i credibility-list note)
7 @  b! m: T7 H9 }2 Pset i (i + 1)
) c' p% D6 w2 B  e% p7 G]/ {8 f  w! b% A" p
end
  T9 P* f- w8 Z2 `* @1 z: ]
2 Z4 F% z# g& {" Y% t( Dto update-global-reputation-list
% J# }* Y8 B4 S, x4 s; ]let j 0) C9 Z1 n+ B) R
while[j < people]3 w0 h6 b8 m+ i1 \9 H0 p% ~( ]
[1 U# R; `0 x7 D" }/ U
let new 0
! B' D- ^1 n$ W5 I% y;;
暂存新的一个全局声誉) \4 Y$ ~. _( ^/ i; d0 h: o
let i 0
6 b( R% E/ {" slet sum-money 0: J" i; J" B  F) l+ l
let credibility-money 08 _0 V" }/ {' f
while [i < people]7 W5 m: u2 A* ~3 m2 L
[
" M) g# M* C& ^  |set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! q0 G8 Q6 ?8 \1 C9 c( C( {/ N* aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! B  t6 u+ _5 M6 A; r
set i (i + 1)2 Q$ n9 f' ^, c! {
]
# x4 m0 l; Y0 K: Slet k 0
' X- c; c. ?& H0 i3 D+ w6 h9 Hlet new1 0
) _6 D) o9 R, j# ?4 h; M% ywhile [k < people]7 ^/ }  A; @$ Q9 F" x1 n1 J0 ?
[) C3 H& \3 o" \. w  b4 Z- t
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). l# t5 ?% `# B. X0 \' Y' s4 N. w
set k (k + 1)* r) r* G3 H0 E
]
5 ]" X, x5 j# `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , ~2 ~7 V. M! I0 k9 B0 P
set global-reputation-list (replace-item j global-reputation-list new)- o8 P" P/ W9 P
set j (j + 1)
& u: ^' b! ]& f& s+ Z4 [], c  i8 |6 f! J
end, p9 u  p7 m8 K, {7 C2 `

; k, ?/ g; T" M, l
( r% J2 q0 c; d# B2 O/ }0 [2 {6 }$ D$ C2 v6 i: e1 E
to get-color4 D2 C! e& i) |5 F% q8 H

3 T2 D. R$ a! O7 x9 i" t% d: gset color blue

2 e& a1 Q: ^" kend
& g6 {; j/ O7 l# [1 o9 J: R5 U1 c. Y) y6 l5 [, h
to poll-class) H; {9 P3 y- l" @; z. q  A
end7 d0 I, Q  \$ r( L9 d- h

+ x* X& [# P  t6 \! \: dto setup-plot1- [0 i7 F+ K6 W- J6 ]7 F
1 q) C$ E8 H' H3 _
set-current-plot "Trends-of-Local-reputation"
8 W9 U; l7 Y' _( ^

% v* m% }: J; y2 Kset-plot-x-range 0 xmax

; s8 \2 q& w9 h9 g) s- C8 _2 T+ d" ~! y# x/ e
set-plot-y-range 0.0 ymax
- u6 h* G& T" j# K* {
end
! ^4 O! Y; |  D5 T' V8 j* ^6 T7 M6 T3 a' y
to setup-plot22 ^2 m; r1 w3 C7 Q0 M

9 f1 |% q* ?, lset-current-plot "Trends-of-global-reputation"

" T. ~6 e3 N) D7 n
* l% l  a0 Z/ y0 r' D1 v8 [; k1 }% Tset-plot-x-range 0 xmax

. ^7 b, R6 U; l. R3 e" {0 ]& y9 Z( M$ i0 P* {. B. Z) F) }
set-plot-y-range 0.0 ymax

9 Y2 n$ C' b) P. G. xend
: p& E6 n, R2 k- z% m; X; z1 Z: G( T
to setup-plot3
" ]# Q$ C, |- Y* x0 i7 @& F5 k+ v* t
" m! A. V# n6 Z  L* u6 [6 lset-current-plot "Trends-of-credibility"
, B) I: H# r( N

, x) S" ?* l$ n' D( Xset-plot-x-range 0 xmax

( m. x+ m! N3 f4 F5 [% |% |: a7 N0 o( x- i1 V' C+ S
set-plot-y-range 0.0 ymax
; E: q2 ?( M4 J0 ]! ^% \2 z
end& G2 G6 w0 H+ k% x! A5 @, U1 l

' s+ w; c* E* u# b( p( J' A' O. Uto do-plots' e2 j5 E+ N3 |6 a5 x: `5 }8 Z% Q
set-current-plot "Trends-of-Local-reputation"% c- P0 O0 w. o0 R8 ^2 k. `6 E
set-current-plot-pen "Honest service"; ?8 L% l7 T. T. f
end5 I; G" E, M3 m3 f/ ^3 R7 [3 q

: Q3 H# \# ?) Z' p( @' u, H: 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.
6 G2 H- P. ?: f8 O& _7 n! ^) A# t8 K, C$ s, V& d
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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