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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:
- p/ }( [1 R( ]$ E) f/ O& V4 vto do-business " ~+ [4 T* ?: d& D
rt random 360
9 D3 J6 k' H# |+ O% j fd 10 L' u0 C/ [7 Y. s# F; P
ifelse(other turtles-here != nobody)[
% ?# s4 Q. {. _! ]: h6 f. @* p   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% h) p6 Y0 c, ?+ z5 ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + l" \" }1 I) m( }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 X4 n% ~1 Z& i
   set [trade-record-one-len] of self length [trade-record-one] of self7 m# |& _9 m- X' q
   set trade-record-current( list (timer) (random money-upper-limit))2 _0 c. j. C+ ~0 K5 z

% F& q" }' F$ o$ C2 J9 _1 o问题的提示如下:
" C9 ~/ N+ u6 P) h, Z( s/ A
6 G8 D- |- D! X: Zerror while turtle 50 running OF in procedure DO-BUSINESS
* F; E8 K1 n4 w& {3 I3 ~  called by procedure GO' L# T* ?3 K5 t# b0 n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 C. n$ _+ ^8 D/ m/ n4 }  W
(halted running of go); {( N; x; x5 O4 ]7 W. q
) {- s* g" [. X. Q. Y+ g2 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~~
4 o3 T' C9 A( C" X% i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
5 u( T7 w3 y) k7 T% P3 Eglobals[
0 b. ^, z& j# l9 Bxmax: H6 C5 L3 D, q: q& q) x4 b7 H
ymax0 N7 \: c3 A' C( `0 b2 R
global-reputation-list
5 ]! P+ b0 D& a7 S# _( k- Q9 k
: \8 K/ S& x2 C! R7 M;;
每一个turtle的全局声誉都存在此LIST: ]) o0 N6 e+ i0 L
credibility-list0 P# s) ~, `$ p0 j% h% R* `$ u5 q
;;
每一个turtle的评价可信度
* w5 N" e1 j/ i' e5 l$ U4 |honest-service( Z. z$ l. o$ w8 C
unhonest-service) l. P, q/ _$ f
oscillation
. R" u# v8 C% z7 n+ b5 wrand-dynamic
% I! T3 o; a$ k0 E]8 h; Z# M  S- w
8 B7 O& K- t! ]0 `
turtles-own[- C, D2 q2 F# M* U! s; x% i
trade-record-all& o# n& P" d$ l, A3 j  T8 M3 ~
;;a list of lists,
trade-record-one组成# ?5 M9 J$ W% e( a3 A, z1 m. i# p( M
trade-record-one
, F$ n3 d+ Y; N& V4 V2 D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: m; {! H+ Z% P
- Y8 y( J8 I" W6 M
;;[
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 f# _. S0 B) l) ftrade-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]$ z" B; r6 h/ t$ R$ f
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list( B9 R# S/ n6 R; g' B
neighbor-total, T6 c1 I5 ^, ?' S" _
;;
记录该turtle的邻居节点的数目
. s( Z' ~, Y  ^, V- ztrade-time
! q4 o: k# U1 q8 \8 v; [% v/ K;;
当前发生交易的turtle的交易时间
$ I' i' }  ~. Q" U, t2 Xappraise-give' v# [( U8 g7 v0 ], Z2 B& K
;;
当前发生交易时给出的评价
2 ^+ U& {8 N( E3 |9 m1 W7 y( o5 uappraise-receive
) z& Q. F( z- f8 g% ];;
当前发生交易时收到的评价
" q" Y5 i7 v3 }  b- l4 K1 mappraise-time* m9 e3 p- |. D6 E  E
;;
当前发生交易时的评价时间- I$ I0 f+ _+ C/ B  ], o5 P) }8 ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% _8 O/ f+ I) @trade-times-total
) f4 q$ U8 b5 Q0 O9 q2 A9 F9 e;;
与当前turtle的交易总次数
1 R1 O, A, u( A. n% }trade-money-total
0 H2 a; }: `. y;;
与当前turtle的交易总金额
% T3 i' {  ], `. C! [local-reputation0 K% m+ H1 n1 e8 L' q3 z+ ?& A
global-reputation
; V2 x* b- Z" h' Kcredibility$ G- ?! d: W& _
;;
评价可信度,每次交易后都需要更新
8 h, Y& e, r0 O% t3 Hcredibility-all
( p8 z* X  T2 H;;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
6 ]" i& |" T) e  O! B: M2 E8 c9 S5 V" ?4 E5 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0.52 b3 [" }9 F/ T( P6 x) \
credibility-one  b7 m/ l$ a- g- |, C* p
;;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 y! d  @; `; J6 g* }, F5 d6 d3 Zglobal-proportion2 f; H" y# |$ o: @
customer
$ `+ l! J' n  {1 T7 C: Ccustomer-no
8 ]; X6 ]+ b4 ttrust-ok
' O5 r& `# J1 J( Y- utrade-record-one-len;;trade-record-one的长度
# D2 m0 |: u- e- Y6 t' N0 J/ x]4 e! F, z3 ]5 `9 m
$ k# O( e' H( k
;;setup procedure% P2 C5 n" h7 L: v5 K/ P( ~, S9 {+ ^

: a/ e, J  S  u) z9 Y) k8 o8 Ato setup1 Q( Z9 X1 C4 m8 S4 D% j" f

" W2 K$ }! \  d3 H0 ]  ^ca

$ C+ v8 H' r2 P2 |2 E$ V2 X$ `. e6 C. a% T0 J" s6 E7 N( b
initialize-settings

: K/ z% C( z" |$ [0 J9 F* y/ l% [* O( F8 ~' {; |
crt people [setup-turtles]

6 B3 H4 N4 D2 U, K2 Y* H' H9 U
6 L3 Q* L& @% b4 O7 i/ L3 f4 q  |reset-timer
) c$ L8 \$ b; ~4 N/ ^3 m5 s

# m7 f+ j9 X; r! s' h* B& f+ ~poll-class
! }4 {! L. ?: G: ?% e4 L

/ Q) c: M$ g( T! B7 F7 I+ f1 y) b$ Bsetup-plots

# K8 D6 [) Q4 _5 B( i0 W( w9 F: U+ S  Z6 J! p+ u0 h- k! K
do-plots

; q$ Y! V1 z0 E4 U9 N. Rend1 D7 l9 P( b5 s5 d3 f2 g6 J9 F
& B1 B! ~0 Z& v+ e4 P/ G% s
to initialize-settings
: w. W" ^6 \6 {' i' j. X& H( c4 U1 P' r( g: Y" p
set global-reputation-list []
# }- E# N$ E) [. Z2 R! y7 y

4 Q, v8 c) {' j2 N0 g7 {set credibility-list n-values people [0.5]

/ W/ U4 M; w% H* E+ |- L
) @" m- k+ ~1 A5 rset honest-service 0
# ^  S5 |( c3 l  }6 O

) L: d) c5 D; r  B2 Pset unhonest-service 0

1 Y" F) `; i. z. u! d9 @0 z8 U9 h# @! u! ~1 E
set oscillation 0
) E7 n& X3 X2 b. v0 F; O' W
2 {& B4 c) J4 _
set rand-dynamic 0
" Q& G$ w1 }& A2 `# A
end
( E: @/ i& O; o; l$ S% v/ q
) M2 h  Y+ [, r  {( t8 G: Lto setup-turtles
  X& \1 K( C# `: h' pset shape "person"6 x1 F0 `# Z5 f# ?" _  E
setxy random-xcor random-ycor( x' ?1 R3 g1 I. D: e
set trade-record-one []- O% L1 M; y  U: J5 \

. N/ r  T( J  ?0 e9 o) \set trade-record-all n-values people [(list (? + 1) 0 0)] / l* d- k+ M+ h
4 z1 C: Q. @" |% G9 Z% i
set trade-record-current []
; Q- L+ Q- R/ J+ Q& Mset credibility-receive []5 m! X) ]; T' l' Z3 A
set local-reputation 0.5, C0 P; k  B" K/ \1 w
set neighbor-total 03 o4 Q( Q! t6 F0 N5 l
set trade-times-total 0
2 |, U9 t0 o) `" C2 hset trade-money-total 0! G+ p0 ~+ \( j! W1 }) A4 L7 F( v
set customer nobody
  l4 P( j0 M7 n! S& |set credibility-all n-values people [creat-credibility]" g$ |- ]; h7 U: C6 Y3 F8 P
set credibility n-values people [-1]) W- U7 ?2 N: d0 Y! [2 {6 X: T( D
get-color9 \# F9 a" R. K4 E- q
9 {( \3 ~6 u6 G; w0 B! W
end
) k* A% z7 A5 H- K
' U0 G. L4 }$ r( x) F/ B5 [9 i# ^to-report creat-credibility  t; L  i+ O1 W/ U2 ]$ ~
report n-values people [0.5]% D7 w& w7 b0 l& D9 f- G- {* G6 e" O
end
8 Z1 Z6 w0 _2 U: V- S$ B7 {" U1 s4 M, J
to setup-plots
% H2 e+ b4 Y# t* Z$ b. }6 r
' H; i3 Y9 H$ d7 A% X& U6 Jset xmax 30
+ F- c- ?1 _2 F  h" h  Y. i
+ w" E+ V9 G9 }! `4 j- C1 f) P
set ymax 1.0
; E4 X3 p' z5 n6 |9 W8 M6 L" C2 w

  z2 J! `, N, I% Z" ~" Pclear-all-plots

4 }' e; U7 m' S- N/ i
1 l' l8 T8 P* \8 l5 isetup-plot1
4 o* C# _  i' D, d5 W; n1 g3 R
: c' ~- Q( t6 ?( v- B% K# H
setup-plot2

: D/ E$ p- F* P/ k, v, Y. Q1 G4 x5 n3 ?
setup-plot3

8 Q1 l8 f8 ]1 `+ Aend
+ o6 I2 t% k6 _3 J& q; I4 T' p! z! o1 k/ p. s+ p% y
;;run time procedures6 i' i' g. c  C  i  E1 X( M
% U) \6 R1 `  L  t- s
to go
, P6 b' g5 E" A1 [1 S. K& [! ?; ]# h: z5 A' Y% l* Q0 C
ask turtles [do-business]
" p1 ^8 `. d% g7 y. w- u5 l
end
: h2 [; S4 a- a: l  f& T) R4 M8 N3 p% a- x+ z# Q- \' v/ Z$ v0 }
to do-business   c+ {4 r" g- J! W4 z
0 e+ k) t- U5 G/ o* I6 P6 G

& z, m' j1 w  o1 Frt random 360
3 i; x4 V' @' n0 L+ z) C9 u6 c

" p- a+ J; P3 S" {/ l# \+ ifd 1

/ o9 D6 L6 z5 H4 E( ^* T% j1 \" t* C( c
ifelse(other turtles-here != nobody)[
8 i2 \; i$ h* H& r6 |

3 Q6 h0 M  _; z1 q# Y5 V& d7 Jset customer one-of other turtles-here

7 ~* s$ l, m, l: [
+ t. H& U, q9 B; [2 O7 l;; set [customer] of customer myself

# F% |" y- }+ ?, A9 K# E* d1 s7 Z! P$ y3 _
set [trade-record-one] of self item (([who] of customer) - 1)0 Q3 p1 S& U) @* r5 n( E
[trade-record-all]of self( s, `, f4 O7 J; R+ R6 j9 _
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  a7 X! Y2 O1 |* d  Q- Q) u1 \% \
set [trade-record-one] of customer item (([who] of self) - 1)
. ]! q9 S/ S( D6 M: Z4 g( _3 @+ A[trade-record-all]of customer

7 @, H5 C" O7 [( o6 J7 ]
) w$ f( V- i4 I# {  N# l/ ]; o& H* Aset [trade-record-one-len] of self length [trade-record-one] of self

; F" N/ f7 F- a+ }1 @; t4 M, E) N1 k6 S7 Q; D1 I( A: z
set trade-record-current( list (timer) (random money-upper-limit))
+ y8 \$ `5 a2 Q! ^  K
& b1 h$ U$ q. e% c$ c
ask self [do-trust]: V6 _8 m, O' a  J) ?2 ?
;;
先求ij的信任度
. a* S6 u: x  z3 A- B/ m. ~' x+ e+ C
if ([trust-ok] of self)
; O; f3 e, [8 q9 r" V;;
根据ij的信任度来决定是否与j进行交易[# Y0 S! u& ]- Z$ y: _2 g1 ?6 ~1 w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& Y5 H# S. J: M5 F4 U/ x0 ~& ?) D$ F2 B7 s( X5 ]
[

" ~. V% I0 _  o8 u( ~. s* a! K6 o7 N
7 S7 _% P" L7 I4 l/ T- Z4 Hdo-trade
, Z: G" V+ Q& S8 T
$ W$ k1 s3 O& q/ ?" I, n) Y. i
update-credibility-ijl

4 l1 |4 M! a, J0 H" k- I0 h8 t& d% m, A% R
update-credibility-list3 k2 z2 M6 m  W- S# a/ }

& \+ J3 s4 d3 c- V
" x( `6 B/ N! R0 X2 H/ yupdate-global-reputation-list
- |/ B4 Q6 B4 R2 B1 Y; n

3 v* B; y) @5 {2 _poll-class
1 ~$ ]) B* X% |2 p

; ?( H9 r- {  @get-color
/ V2 g; H( l' c' \8 Y

) v5 }6 J& B* W/ q; z]]
. U/ [. N7 p5 i( l; M, J% f5 @. y% P3 k" ]
;;
如果所得的信任度满足条件,则进行交易
' P9 L3 E. X8 \$ H: O- i" o" V5 Y
[

4 s) [' E8 N" l" J
, i% w6 U5 v% f+ E, J, m9 frt random 360

3 n7 f1 ?, s9 U, P$ a( S
1 X$ S& _9 W) v* w6 n* lfd 1
/ C4 ^( ]8 `9 \$ R/ W$ _! B1 [

# c% B* b  x# i- V" }: J& S0 t]
: v1 ]/ Z" O, M! n1 w: m
# \. A- l8 r) b, h. u. J2 U2 O
end

# a+ m7 C7 q) F. K, ?( B0 D5 y7 W9 T' R6 M$ @
to do-trust ( n+ E: d0 z8 e4 P& Z& N
set trust-ok False
$ ^( Q1 F3 I' _" u& N" h
1 S) S! P; B+ v. p7 m" ?; j7 V, S
+ n) f& k* M6 D* j+ R; i( ^- [: v
let max-trade-times 0
2 |7 t+ u3 k3 Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( c6 K/ `3 f" h- r% O1 Y* n( y
let max-trade-money 08 o% }) ^0 }, _; w0 z: f8 O4 C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, |8 R  k) N  v  p+ ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 q2 X+ b* b6 H* h- F/ i( A
& b) n3 V  o6 d% _  t$ [; l

6 u7 G' \- g) r% jget-global-proportion
! N1 s! R4 }  }9 W1 j! \) \" {( hlet trust-value8 u5 S# w/ w2 r; H4 w& V
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)

0 I9 O9 }" M' K4 B. Jif(trust-value > trade-trust-value)
/ R0 N# E0 T, F; r9 N[set trust-ok true]
) ~* q" T8 ^; Y: g) u9 Vend
- r4 U; u* Z: l' C3 R. s" d( ~) V# E+ j" m. s  w
to get-global-proportion: [2 i. j; R# q2 r2 a* H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ O- n5 }/ m9 L2 F4 G+ `, l
[set global-proportion 0]% ]9 C0 S( X1 t- R. G: J/ g+ v! }
[let i 0
# M$ y1 E8 H+ A: ~6 O' y$ b1 Jlet sum-money 0
: b1 A/ r& O( I+ Awhile[ i < people]
& r- ?7 V9 @4 i5 K! p0 J& a: D- q[
8 [$ s5 H# t# {  d8 ]2 Cif( length (item i
8 z0 Y3 C4 G$ ^, G, K3 m[trade-record-all] of customer) > 3 )

6 r1 p4 N9 W5 h, X" g) K[& j, A) X" s+ O4 j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! q$ _5 M, k* }8 A+ ?7 ]) @2 ?
]
/ r6 [6 K5 E$ E$ N2 N]
8 R7 x. K  {# I# Nlet j 04 ^+ F4 y2 K+ j- y& j$ ~
let note 06 L# \. k) K4 s7 {$ i5 z
while[ j < people]
" i& _" k* O% o/ |* y2 P4 u[
' w1 E4 w" P! ?4 n$ g6 T) aif( length (item i
# x( M/ w" S% d/ D[trade-record-all] of customer) > 3 )

, T& p0 a( I& R[
% v$ C6 o  @5 n# i" Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% B3 K- N4 r6 M
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# o6 v1 i0 e! n" k5 G# p[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" w6 K/ y) V: w% i  s3 t& ]# Z
]
2 ]- p# U( |- I* \3 c]1 k- }6 o  i/ u- z$ v9 B
set global-proportion note
7 f7 ?$ U/ ]) k) G' ?' F) e]  d* F0 j9 r/ {4 l( j
end
; z- B6 y1 {3 V
% a  k2 b# ?) L' g4 ^- [; a. l% @to do-trade( D- |2 u, b$ R- G& A' x4 @
;;
这个过程实际上是给双方作出评价的过程- j( Z, J: R/ j) N# d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, N' ~" K, x; M) {7 n- mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( D3 O+ f8 e& kset trade-record-current lput(timer) trade-record-current
7 V/ [& y5 C+ V6 V" a& O;;
评价时间
6 V2 f5 M* m. {! N5 H' C1 eask myself [
$ e2 s  a' x& J! w5 b: N* Rupdate-local-reputation
- ?: k" \% t" N6 M: C7 z0 Tset trade-record-current lput([local-reputation] of myself) trade-record-current4 Y- g" N9 }6 M- I+ i2 p; c
]
/ ?2 F4 Z2 N7 v/ F8 c) bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 j( e# }1 i0 C) h3 h;;
将此次交易的记录加入到trade-record-one
; V& ?: G  Y6 J  O# E2 ~set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), J: @. ]: i- r5 t# i) Q
let note (item 2 trade-record-current ). j7 N1 ^- z- w) S8 j
set trade-record-current
* l: ^) C& \* d( x; |, q4 ^, m$ y2 v(replace-item 2 trade-record-current (item 3 trade-record-current))

; c6 o. B8 Q8 e! d! I! i6 \. yset trade-record-current4 U* F3 {1 C4 H+ h% C
(replace-item 3 trade-record-current note)6 Y. C% j" z% Z% B3 r7 _9 W. W( R
3 Z7 |, `7 D8 T. U# [8 S' @0 p
& y( t* y* ?. [- N% r3 j6 ]1 T2 I
ask customer [
% l  g. {; K9 R+ W7 _update-local-reputation' A5 _/ [) M+ O% T/ Y" ]
set trade-record-current/ u) H+ ^9 t' X7 u. |0 S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 ~# _* {) _  k- q/ ?# m
]$ `3 W/ s' r/ x- v& J" p
/ F" G1 f' h# ]" l+ Q
' p5 t: M  V3 G, D! W1 Q. l
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 A# t3 ]2 \" z/ }

2 G& {7 x; t. z, m% aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 Y: c# W9 w4 x7 b5 t$ R; A: E; R;;
将此次交易的记录加入到customertrade-record-all
6 u4 O* x7 \+ @9 U2 F2 m" Dend7 t5 `( c+ u$ ]$ }

, w+ X5 k8 N/ d* Mto update-local-reputation
5 j+ y8 R  C! c. j" Zset [trade-record-one-len] of myself length [trade-record-one] of myself
( O* h' F& ~* j# m. h( w1 W- i% X5 g# c. R

8 U; y3 O! k8 C: y9 E7 a, i% }+ ]6 t;;if [trade-record-one-len] of myself > 3

8 ^( U# o' g# i1 t# Fupdate-neighbor-total* s) A& A7 |& N* ?
;;
更新邻居节点的数目,在此进行
- y1 A1 P& a1 b" x' ^3 y+ Y7 elet i 3
" V4 o6 ?1 H0 f9 }let sum-time 0
0 L4 v: [9 l' n! I; K, Hwhile[i < [trade-record-one-len] of myself]
/ W6 D- k! m5 A* {3 l7 i0 A+ C- o[9 B9 X6 d( J: T0 Q; b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 }! c6 n, ~) m5 ?' |% H
set i/ |+ t, a( Y3 ^' q% |+ G( f
( i + 1)
7 y0 |" W- [5 B' [
]+ S- b8 L  w) o+ l
let j 3) _, ]3 z2 z4 S6 V1 i+ h
let sum-money 0
$ t8 K( ^1 ?& x) Swhile[j < [trade-record-one-len] of myself]) N+ D4 V4 [9 \5 K! N: D
[! s. r  V% n+ j3 C
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)
, Z& E* V8 E- Vset j
; g% a$ ?7 @- @8 V& w6 D7 `) d+ Z( j + 1)
: [( @% b2 }+ I! l/ h$ C6 g+ Z
]  R+ d$ g; u  L
let k 31 E. G# O) T4 T+ @' o
let power 0
; U6 P; o7 g, m; b4 v& f9 alet local 03 S5 H% w, c" l$ r& ]# x4 R) L
while [k <[trade-record-one-len] of myself]
* a9 D2 B, f/ D3 T4 I[1 y3 m0 j7 t9 ]& q/ j& Z6 @
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) ; s( f  \, `1 J" ]+ Z
set k (k + 1)
- D0 n$ G! @/ V  |/ |( y" J]4 t* g" w! }2 L$ q8 ~8 h1 g
set [local-reputation] of myself (local)
9 o5 h6 R; z- B3 S6 Bend
6 `* y" S. i! Q8 i5 ~- a3 K' a( Y  k- Q6 v/ L& R* z
to update-neighbor-total, s6 `+ S' `9 X$ u* F
' P. \- d; g& N4 q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ t  |' ]! {4 _% N0 o" ^; n: k

& x( z  f( G7 ~  E* I* q; A
0 T( ^! Y0 ?5 S; I" C2 t9 T
end/ N6 M4 q) \- ]5 j' j( ~& T" k

/ }% @, ?  w% Rto update-credibility-ijl 2 ~  T$ [4 \! _+ ~* P; D

1 ]: X( C1 I8 |7 i, v+ X2 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。) t4 _1 o  W1 @+ n2 F' J( x" w  N
let l 0( [  `( \# m& P; L; }" M
while[ l < people ]
9 ]$ p1 g$ ~/ x) F. ~- ?0 w;;
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0 j+ T7 s! h+ ^
[
7 f6 G: C5 Z' llet trade-record-one-j-l-len length item l ([trade-record-all] of customer), \9 N2 m% X( V/ |9 M; m, X
if (trade-record-one-j-l-len > 3). O3 x$ K1 V  V+ \" u
[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* A/ v! a5 a6 m1 ~6 _
let i 3. G/ I1 N. L6 |: A9 s  O8 o9 v% j
let sum-time 04 v3 C2 b5 a2 o$ n
while[i < trade-record-one-len]
/ p( `' K1 [$ U1 _$ V[# q( I; t4 H4 j- U' |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  l' R+ j  ^" V1 }! [0 r+ y$ E. J: w
set i2 I: D* v, r& @: v
( i + 1)

. W9 L3 r7 O8 A/ _6 D* E]
( \+ l, h2 l2 v# V4 d; s) Glet credibility-i-j-l 0% d6 M# o4 R: J  ?, q0 s$ e
;;i
评价(jjl的评价)
! F; z0 O6 M4 l* @( N. c1 Qlet j 3
- Y; Y: E8 E5 x% e; plet k 4
! `) j/ A0 o7 P& Vwhile[j < trade-record-one-len]1 {9 K: ]0 d; U8 Q1 s3 u. i9 \
[' r% q) F! r) ?8 X, e9 j
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  ?* C+ W  S! P' h3 p0 ^# C
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). l8 Y& k/ [& G0 J* Y5 S6 f
set j) x7 V% P9 E' v
( j + 1)

: N2 ?) }: ^+ a, i9 u4 t6 R]
; B9 Q* h! G1 [4 t% p  N6 y: pset [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 X$ H! L: I3 q; i& w* o

0 _! k6 f9 t2 i5 w

5 E; [; M2 c' C0 Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 y; O0 Z! r; K2 A2 e;;
及时更新il的评价质量的评价; a; {$ e8 ~% ~! U& \7 ^& q8 U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. e. L2 Q3 w  B. R% B) `
set l (l + 1)
* d/ d* @$ A# N( U# @]: Q- q3 Y/ H+ N) z  O* y( o
end$ R% M) d1 I. `
0 I/ y2 C  [2 q& z
to update-credibility-list: h5 n: d6 u; D# l
let i 0
! \, r9 O+ y; _/ \4 [while[i < people]
1 ^7 H8 A$ r0 N7 `: L! u. J- i7 T* K[
/ q3 G2 v+ C* D  Alet j 0
; |- E4 J7 M7 G& q& c) w5 y2 Rlet note 0
. ]2 Y# n1 C2 ?/ [; xlet k 0
+ o: F0 l) x  x+ B0 V! M9 G;;
计作出过评价的邻居节点的数目+ f. r% K; U8 D6 D, _: M
while[j < people]
, \0 Q% E' j. L  \, X[2 C& w" z3 Y5 c) D9 ?! q/ g2 R9 E9 i
if (item j( [credibility] of turtle (i + 1)) != -1)
$ z. `! j; O5 X) D7 _;;
判断是否给本turtle的评价质量做出过评价的节点
! n) R9 e0 _8 Z6 f/ W3 X- Z[set note (note + item j ([credibility]of turtle (i + 1)))  ^5 a- y3 i% k
;;*(exp (-(people - 2)))/(people - 2))]

! V, @) o! P1 i& @6 q8 ^" bset k (k + 1)! k( g9 w. _9 L) N( U
]) E" T9 j0 j* L
set j (j + 1)
& V" n5 _! D* Z! \  K& y9 }9 {]0 C1 V$ W, G* d! Y
set note (note *(exp (- (1 / k)))/ k)- e3 N4 c2 e8 n2 G
set credibility-list (replace-item i credibility-list note)% m/ H! t3 g, m5 |4 g9 V
set i (i + 1)
, P/ T$ Z9 k0 b# C; N! N" u! m]
* N0 e" M3 F1 j7 aend
2 b0 b2 r: w! g; K0 L2 q& C
1 h3 i3 J0 F0 k/ D  S  W3 R1 bto update-global-reputation-list9 N7 p7 \7 h' x3 ]
let j 0. {3 c0 d% \6 j
while[j < people]6 ^& K& @9 a4 O6 y+ G# ~8 k# g: d% y: V
[7 B+ ]% r/ N4 a1 |: ?; m
let new 0
3 U$ z# |! L. \/ x8 a7 V;;
暂存新的一个全局声誉
5 _6 X0 k, M+ L: k2 d! O/ I" {let i 0
# H) e/ D8 Q7 m; [9 C& j. t8 _! ilet sum-money 0. ?: s+ @4 s# _; e1 s& a
let credibility-money 0
* u0 c) U/ L/ A  Fwhile [i < people]' g; O: {& R0 ]7 N/ |; X  n  d' Y
[
8 E$ }3 J5 G' o. T# |& _' fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); s' ]( y' ~' n* I- T; ]9 G) N
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# O" q6 y0 V* [% C8 c7 \! L" ~set i (i + 1), V$ \! O, ^/ T6 l- v/ y
]% r/ ]8 |8 G* L( }- b( `
let k 0  v* V: M8 M  O. D
let new1 0
# `& m$ Q0 e% e# ]- B* C2 qwhile [k < people]
# F$ Z( @; @8 r' P$ P8 L[; [6 \! C9 p6 W3 m4 Y1 M
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), i7 {3 _- A% f8 t, C) t
set k (k + 1)6 }& n2 E5 K4 v2 Y5 G6 p9 ]. m& F
]
6 U* m" N2 k$ v7 X! lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, a. A0 Y; a' Z- Lset global-reputation-list (replace-item j global-reputation-list new)( @" ]' T. e9 w4 c2 ?+ B
set j (j + 1)6 H9 M* B& D5 M- |9 o: s2 A: X6 D7 k) ^
]8 D9 z* H; _. |( J. C$ u
end
7 z$ q8 ?9 \6 X3 r3 G& p$ }- P6 {7 [% q: ?2 n2 R6 X
$ l4 E, e3 m) \+ H3 v8 I; p- O; D
- l* d& e' j* `( k$ w
to get-color
/ i# `+ ^2 k3 \* x' L
$ Z6 u' ?% |3 d' |0 M/ d* U) Sset color blue

9 U! x. [$ w7 j6 rend' x0 b- |$ t9 H( z$ i4 F2 ~% U
+ V' z9 y% L6 {
to poll-class
4 ]$ D5 e! \: r) b6 B8 k9 I; ~2 nend1 W4 H- _' k7 ]& v
4 {) A; b" U, Z4 L( [, w# p
to setup-plot1
9 j# t" U/ H, t$ T2 J2 Z+ J: T) @6 ^( W
set-current-plot "Trends-of-Local-reputation"

; e* j. e; Y3 D! {
2 u) x& T! h" ?+ Q- P+ ]' `set-plot-x-range 0 xmax

5 b- ~3 E, V5 O9 Z7 _/ p$ ^. L% _. k/ F& M- w4 j/ @. N* H
set-plot-y-range 0.0 ymax
) R8 I+ Z" k3 P/ N1 v% e
end0 Q4 o$ [% o+ i

. g8 M+ ~- {4 k" h* Qto setup-plot2
2 w6 @7 P, ]9 V; }, a5 m
0 f0 v- c1 ^" y4 ]. g! tset-current-plot "Trends-of-global-reputation"

- W) r1 e6 t  I# A
9 [8 r. H; x' J' ]6 ^5 U& A1 Wset-plot-x-range 0 xmax
% r  d9 a+ H( Q3 S" u
( g. _4 q# a& l! _  W( D
set-plot-y-range 0.0 ymax
0 p, k. ^" z  x' U
end  v9 d9 m/ S0 N0 A3 @( j

9 J7 I1 c# E4 x' i! B$ y2 b$ G2 nto setup-plot3; k* y2 N. N6 h2 A
0 Q2 t& C3 A' \  z3 T
set-current-plot "Trends-of-credibility"

* ]( x; x  V+ S+ Y, y7 G7 @  C9 p0 F$ i; U
set-plot-x-range 0 xmax
1 q8 ?- z) Y0 o+ L5 I

, J, A! u. ~* U6 J' x9 r. _5 F* mset-plot-y-range 0.0 ymax

  T1 A8 f& E0 f( K8 c& g' }end  J1 H7 T9 i# Q( K
3 Y2 @1 L" D2 ?/ j2 M- E; K
to do-plots
  |' [0 Q- g( xset-current-plot "Trends-of-Local-reputation"; r5 K, `; E( h* j: @4 l
set-current-plot-pen "Honest service"# z! f& I. u. t$ _/ a2 W
end
- @3 C6 r2 l/ N- Y7 N$ G" p0 h
, S3 ]; U! N$ Q& e9 L- \% 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.% F6 e, C& J: O6 O, j; }+ y4 v

% x6 C3 c. B2 U& x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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