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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:
2 |' O* |) R8 u  G3 ^1 I' J1 G. q. ?to do-business 7 R. l6 P; k! Z+ C
rt random 360/ g5 a# w3 _9 }* q+ Y9 U; u& x
fd 1" G9 Z$ E/ m9 a- W' H" j- M
ifelse(other turtles-here != nobody)[6 K+ @3 v/ E" x7 r: \
   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.
; N( j5 _8 P* B6 n/ L4 U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; S& Q: [- s7 E+ o" ~/ T! }1 s. G   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( x0 X, z2 s, U   set [trade-record-one-len] of self length [trade-record-one] of self
0 d" i  n' ?  x  \; w7 c   set trade-record-current( list (timer) (random money-upper-limit))
/ [' i3 V4 h9 f' S/ k
$ P0 [6 `/ f$ L( v' s问题的提示如下:
& _1 S* \4 P) Q* X; Q. h# C9 e! @! Q( u8 t+ N. O
error while turtle 50 running OF in procedure DO-BUSINESS
2 O3 i, R# {) `  }0 o/ ~& y  called by procedure GO1 }8 M4 |$ [6 L
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 p  g$ r9 y7 L$ a0 P
(halted running of go)
# z5 w6 T- N4 r. D  B
" K! j* o; m, e: [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~~* Q* }, k, [3 `) T
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
- r' u& ?8 {9 ]1 y2 D3 ]+ ~globals[
5 h/ F9 r( G! J& Txmax4 D1 `8 |9 H. ?7 H7 Q! e7 \) ]$ d
ymax
% t  B, T8 b' J6 y" G7 s7 F" @, y0 Gglobal-reputation-list2 @. C' y, n# i$ }! V

% w8 `8 d6 y3 e5 g! B;;
每一个turtle的全局声誉都存在此LIST8 F% W* g" p1 c  \% {
credibility-list
8 l1 I* A0 E( ]8 S3 E( ^6 t;;
每一个turtle的评价可信度
5 ~, \4 o6 O' Q6 n+ [honest-service* c* k3 ?0 A) A$ Q' o1 q
unhonest-service: F+ r' z6 c7 V8 h
oscillation- q( `2 O" M. y! k; Z
rand-dynamic
4 v9 E' E0 L6 z7 m4 E# y, C" x( @]
% U* H3 N) @8 [- C$ m
% D) z" F* T& x- k7 X/ V% Vturtles-own[
4 B: y, m/ W( \0 ztrade-record-all
! F- p4 x: w* r3 ~2 T;;a list of lists,
trade-record-one组成- _+ u$ r' ?, o9 f! R0 A8 P# b
trade-record-one4 S' r- T' y& A5 T* }" v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; _0 G0 K, @! t5 M5 W1 x2 p  F8 Z' Y
;;[
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]]: n: P/ P2 P( D; B# a% k3 P
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]' n, K# I+ H! e( `$ M- ~" x
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
. O, t$ x7 P2 Kneighbor-total1 o& c. o& g0 \. u+ C3 m
;;
记录该turtle的邻居节点的数目
1 K$ j8 c2 K5 o# I% Ktrade-time
$ p  p! g- U. s9 C;;
当前发生交易的turtle的交易时间
( @( C/ e; K  d7 V" eappraise-give
$ I( _! ^3 ~; i  m1 v; f;;
当前发生交易时给出的评价
2 F+ r& y- [& G1 F% U9 Oappraise-receive) q7 }, @: G( F/ ?- N8 d
;;
当前发生交易时收到的评价
3 r, O: y) H3 T0 k: b  }appraise-time# A( n# J1 n8 q) |4 \4 J' k5 A
;;
当前发生交易时的评价时间
4 T9 z. q. h) `8 {& F. R3 M7 ]local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" \% V+ F7 ?) ~% h( d7 W9 Vtrade-times-total$ A( @8 Y1 Q6 q3 n3 r2 R+ Q
;;
与当前turtle的交易总次数* h+ E2 m5 B: u! s/ x5 k+ z
trade-money-total6 b' G! A; V( b, _6 G
;;
与当前turtle的交易总金额
% b! S/ W$ h% xlocal-reputation2 Y# B! N! E- E! H9 P4 {6 G5 S
global-reputation
( B2 z1 O) y5 M: L' wcredibility
  v$ L$ s/ w- w4 w1 `( e;;
评价可信度,每次交易后都需要更新
% G8 H# T3 X7 ]  Ecredibility-all
' H7 H3 q1 \1 \: ]" P+ @;;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" S; _: \' A& D4 @2 y+ [% G
; I( r6 h2 u/ z+ d( Q  Z9 [9 w
;;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
+ W* ^# O+ I  H4 ?! J( ^credibility-one
# R" L# O2 I5 r" f: x% Z/ ~;;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) \" J/ I( L% s. y: v
global-proportion. r: j7 k2 i' J. W
customer
) q+ c8 p" h2 s/ b0 Q! kcustomer-no
( l' @, t/ S, ?9 ?0 |* o+ t$ rtrust-ok
7 ]7 ?3 x( P2 }. Y8 Htrade-record-one-len;;trade-record-one的长度
( M; g5 {  Y$ \* p]
  J8 M0 g9 x* v) m( u1 g% h" w- L/ E# v4 C
;;setup procedure
( C8 q* u5 p+ R7 |) d7 R8 X4 a! l( l! ~
to setup
6 X1 {: F1 m6 g" ~* B5 E8 ^6 }
7 F+ m/ K  D0 }. m2 eca
% t: j. I! p1 ]% g
) g$ {7 T+ M" B( D
initialize-settings

- t% K- j! n) {
# Y- ~: ~4 ^9 E' [/ m/ F: dcrt people [setup-turtles]

6 H8 S7 p3 g5 m& b# V8 Q' X
( S# ~- m) h' [: F  [reset-timer

, ]) T, _2 S( @* W# T& G7 F" }3 D- J4 o
poll-class
4 c) t3 @* E6 ^. a

$ @, ~1 w, I/ w# e7 U3 Wsetup-plots

" V: n/ C/ @* o9 ~" `+ S; b/ i. y. }0 a+ w& b
do-plots

) V/ B- y# q: D1 D4 k1 U* fend
! e+ X- {; r( X2 y5 v. o4 k% w( \( Q% M4 o8 w
to initialize-settings5 \, n- }% Y. y! e4 X$ I1 Z

* W) @. p& ^  F* p5 j2 z+ Iset global-reputation-list []
$ V. T' h$ r& ]( l

; C4 ~8 p- j! V9 {: rset credibility-list n-values people [0.5]

; }  Z2 `# E) a) J" f' ]3 ?" E8 v% Y8 ?+ H& o# ~7 O% l( ]
set honest-service 0
# q, g& L7 N# s3 T9 S3 q0 E

5 k, v3 v2 V, }, N* {. Wset unhonest-service 0
7 ?+ v# i" v+ b$ G; i' X  P

; L) f) c/ W( ~" S- y- xset oscillation 0

0 Z3 f$ h2 I/ l1 t2 S6 V! }" E, K7 V0 v
set rand-dynamic 0
0 Q+ C! Y5 G; A# `; l$ \% i) t7 X& D
end
9 A; l9 g8 M% d, w; z* t3 V' H1 e, P4 {. X# T. d( e
to setup-turtles ! B& e- W3 e- @* V5 S2 P
set shape "person"
2 d+ N3 f  f$ i! Jsetxy random-xcor random-ycor4 Z, A! l( A2 b9 x" O; m2 `" M: ]/ @/ x
set trade-record-one []
2 D! p) \! B# I& u) r+ q5 U

: \; I; y3 I6 ]/ _, Nset trade-record-all n-values people [(list (? + 1) 0 0)]
7 I0 P% Y3 q: d; {3 d

2 O- c# Y% c2 U6 N. ?set trade-record-current []$ f2 V( e2 N) d
set credibility-receive []
' K' i& Z, n4 A' \8 Q9 Oset local-reputation 0.5
. J" W' g3 v. F% m/ l; jset neighbor-total 0# p# T8 d( \  o) y$ i0 U4 H# _
set trade-times-total 0, G5 @) A, B) Q) b8 R  F9 H
set trade-money-total 0
& Z+ A$ o( A$ R/ N! h; wset customer nobody
7 @% W# i' z8 eset credibility-all n-values people [creat-credibility]
& F/ n0 w9 R$ u" x; Iset credibility n-values people [-1]( k7 J2 l1 m+ L3 P% Q5 D/ N
get-color
; ~# o1 V- ^# G; ~
" `9 b" g, X# M4 D
end
' A+ Y9 y# I5 R' q/ ?. J
+ p' u( B; ]9 Y/ {( ]9 Uto-report creat-credibility( s% d# F! x# |* E% h9 k
report n-values people [0.5]7 ^4 m; n8 B9 t, c. a
end" o) L2 w/ o9 r2 j

' [% B/ z0 u; _& U7 H8 |2 Z2 Xto setup-plots
3 H2 H6 W/ a! v$ T7 o# P  j3 u% T  D/ k: M( p. a! t) I) m- O; u
set xmax 30
2 x3 ^% [- O# D* v5 b* y
/ ?; [& O2 K! y2 Z
set ymax 1.0
1 l* l7 a, V4 c8 r

9 u7 b+ `9 z4 c( R/ S& ?# X& ?clear-all-plots

6 p" a8 H7 E* @) E& M$ A
7 D& a! s( p. [+ L/ L! o3 xsetup-plot1

9 p- ^: Y# H  s& `: @: O1 F) w; X* m8 B, X" y' r
setup-plot2
$ l7 t" m1 d' p5 J8 }4 f% R

1 B% x' ^' ?6 o) c9 k2 usetup-plot3
5 O' z) T( h" Z8 U; ?
end
) |; n# j) o/ ?! i( O0 K8 o3 ]! n5 m, k: ]" W
;;run time procedures
' S  t4 L" Q( t
2 G9 R$ h5 R* V- g+ l" ^- wto go; Z2 L# z% y+ k& x) a* Y

9 {, `% k: ]5 C, U& {ask turtles [do-business]

4 L1 m6 H! w5 }! Iend
6 y: ~; o8 ~, y5 j, G
0 t4 t) V  |' K6 p7 }4 ]to do-business ! \+ F$ z! H! J4 j( T* r- V' [
- a6 ?1 L; A3 z7 l6 s+ u2 e$ x- r

8 b0 M- `& m5 p2 @% Nrt random 360

: a" a0 _% K  Q2 o" B. Q
' e* m. a6 j9 lfd 1
% u' J' B$ u7 u6 g' M
2 c* H' U9 {( X! D  t5 [; i, ~
ifelse(other turtles-here != nobody)[
0 o2 f& j6 a. \% l+ T
" {$ L9 E2 F6 K) v+ N: {( S8 W9 ?
set customer one-of other turtles-here
& B0 c$ _6 e$ W- T! E$ o

) _" ^, r0 E; _$ e- V0 ^* T;; set [customer] of customer myself

# ]- [. k5 t" L# ?& _5 C/ \3 A: l" I1 d. W
set [trade-record-one] of self item (([who] of customer) - 1)
4 T) ]( f: b  Z6 X1 w# ~  [[trade-record-all]of self
, N7 ~/ v, y. @, q$ }. x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' [% O  b% z4 P3 ^& }) g+ Z2 S- o
2 e  L+ f/ ]; I; f2 d
set [trade-record-one] of customer item (([who] of self) - 1); G1 b0 A6 K& p# T
[trade-record-all]of customer

$ Y& _2 `6 h2 j8 O9 C, T9 E9 f, ~! U$ f
set [trade-record-one-len] of self length [trade-record-one] of self
9 }! Q& G4 o2 w) C% z$ v0 C% ?% V
: v7 e7 w! I1 v
set trade-record-current( list (timer) (random money-upper-limit))

) d* m  q% ?4 ^& o' q1 U4 |
% p) t* @; p* S& f, Z" oask self [do-trust]
3 ^' z& ^3 {  Q% d: r( c( P# `;;
先求ij的信任度
6 R* t/ d! |& K& K' e/ V. X# _$ E2 G
if ([trust-ok] of self)8 l/ K2 Z9 D. F$ i+ w  M
;;
根据ij的信任度来决定是否与j进行交易[+ a; P, h; u4 z; ~% [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) r# p% B. c6 b9 {; |7 a' Z/ R" H! B& F! P  I$ Y
[
! |4 o& F: H5 L6 q& x+ F4 [. h

3 Q0 y! F- s' ?# {7 Tdo-trade
  x; R6 c) V; \) g

  L- T* M) O- V* Vupdate-credibility-ijl

% `, R: n; a/ ?) g! M
* e2 |4 }7 B+ k# W% _update-credibility-list6 C' N+ E  S+ o1 a, i. b! K  t; O* J/ j& L
# I4 a, [. `: c
8 V" |# ]' z$ A; [. R% s# J
update-global-reputation-list
$ F7 f. j/ y/ g' r7 g4 D- f3 s

" G* i; k& z. j: Z9 D& w% L5 jpoll-class
/ B9 F1 `" _! I3 n

" ?/ T- S3 Y9 K* @1 \" kget-color
. y. X! c$ o; [: w( L
" o, W1 i5 f$ T) S
]]
* B: p; q* Y' [" t$ ~8 J
- p8 A& P/ k' s4 z! r;;
如果所得的信任度满足条件,则进行交易6 V/ E( s( f7 d$ {- l3 ~6 s2 {& v
; ]/ x6 L. i8 D+ Y6 t; g
[

5 V+ C/ x7 Y5 b, l
& D+ C3 _" d3 X( D1 Q+ _, Srt random 360

$ e1 C1 b+ }9 i& Z% U5 ^
* W) w: E! v: w9 T# jfd 1

) ~1 t8 V8 D$ ~9 l' F4 o" d, G. S: _0 `6 N! G
]
2 q! o* ], {2 M% o! ^5 S

+ N9 h! N* `" L; [end
7 ?: h4 A  a, Z5 y

! }1 r: \0 Q. i6 ]& qto do-trust
- Y$ X  b* x* s$ L$ D; cset trust-ok False
. x4 c  p- J( r  y) @. k8 Q! U
6 r6 _8 r* N  C; m5 u6 q  Y$ x

, D* N' m9 C. P0 _  K8 \% t. elet max-trade-times 0
: X% Q! d' S& n3 L  Z1 B9 d9 Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 E4 U2 g* ]; i3 ?' f8 q
let max-trade-money 09 ^: n- ]; c, _2 T$ r+ n! e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( j( _/ v, r0 R4 H5 R: m1 x. |let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 \  M- x; u9 a$ f
6 z& ~' P8 B& d2 V1 i" A/ |

; W+ t& s& g6 |5 q# M* yget-global-proportion
( [8 h! I  F& A2 X8 Elet trust-value- e: h, u; ]6 B
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 P& t/ A% {- |' z. o/ {7 Q- Aif(trust-value > trade-trust-value)0 p% M( ^7 u! z4 M  y" f$ R) D
[set trust-ok true]
( C2 B) i# L9 [# L$ J% F+ uend
8 R6 k+ z8 {: Z, ~, f2 y5 ?  Z5 w) o7 s
to get-global-proportion
5 B9 S; l$ k. @) I5 ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 ~1 _* I& B& u6 Z[set global-proportion 0]
, Q+ N8 J5 C0 d9 c* i[let i 0# m' z1 {! g1 q4 j
let sum-money 0
2 Q' k7 k) d6 ]2 f% }% J2 ]: Owhile[ i < people]; w& H. q" S% |+ Q0 U( n1 p
[
# h+ L& M+ k0 S+ \: {" U0 c, X* Yif( length (item i
  d; ~- r! k3 b4 ^% ], P[trade-record-all] of customer) > 3 )

. S+ L& o! x+ z: s[
( f& U. ]" T. W% sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 C- u0 C  w0 q3 m+ P% t]
. G) f' r5 I/ k. Q0 F9 F* m]
9 G; u; M) g: D. `' v1 k' K: dlet j 0
& I. ~: N$ l6 a3 D& r* Z1 ulet note 0
: T; @, n. H, wwhile[ j < people], k* e6 a- C$ c) o
[
9 s+ Q" k9 F3 z2 p5 b1 Kif( length (item i; Z- c# q& S, M! e7 u
[trade-record-all] of customer) > 3 )
( V, ?9 ^. A  z- n8 ^
[
: k2 C4 ]5 ^# c# n; X! Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; ~3 ?7 ^3 u8 D& C) ?$ a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) Z- f; H$ v) Q! Y' y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# K  F* _0 Q; L& s' ^8 v! T- R* {) i
]
+ f7 m/ w1 Q2 K. ^]
5 |3 A- K% z2 Pset global-proportion note
: V2 l" n2 b1 i1 K]& K4 |! s* i) [# C+ M+ s" k
end
3 C/ V! ]. B! O9 p0 V) y2 q, p6 ~/ ~
to do-trade
* s" s8 f5 o) Y, j! k, C;;
这个过程实际上是给双方作出评价的过程
- g* F0 s5 [4 D! Z& Q# @' ]" f4 pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; J( l; \7 o% k* tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 S5 G8 S  }* a: U0 _( Xset trade-record-current lput(timer) trade-record-current
: o$ J3 V/ ~! X) C;;
评价时间
6 g1 Q  w4 A- F. z  C$ |, ^ask myself [
5 U* u! v5 Q+ ~" ~! B! {# Y4 b# Kupdate-local-reputation" K# A& J# M0 _9 u( h2 c. G: e( S
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 i# n9 l! y1 d8 @. []% ^9 u# A- Y2 G0 {5 e" |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 Y& H0 c9 u. [+ ?0 _# O! d
;;
将此次交易的记录加入到trade-record-one& z3 P9 o1 D) m" `5 b- g; \" s
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ f: a/ V; f) |) f1 {' q2 d5 ]6 m% S
let note (item 2 trade-record-current ); V6 S# ^# [! L, D0 r* k3 T1 ^
set trade-record-current; \  E. e6 v* ~) G% L
(replace-item 2 trade-record-current (item 3 trade-record-current))
% P5 K; a# p6 G0 \8 j# u, }
set trade-record-current; ?; R  l+ _2 j
(replace-item 3 trade-record-current note)
! T4 ^: Q; Q5 |( O. v7 G" U% l3 q8 I& e6 Y# x9 S

5 J. Q7 @2 n. {ask customer [
9 Z# v# ^, C( D8 `9 R$ {/ zupdate-local-reputation
2 [, i$ I! x9 h8 Vset trade-record-current5 p% ?; U; L$ z. T" p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( B+ g) K3 B, @$ z' }* c! J
]
4 x8 J4 E' Y+ |4 Y2 V) ^$ f, |. ?4 z6 [- l! w

  [. S% _7 q; A, f0 c4 Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ F5 g5 y# O7 y/ M4 `

( O4 J" R# V% O6 zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ F/ v4 g8 M+ ]6 J& X8 {;;
将此次交易的记录加入到customertrade-record-all
% U5 d4 t! B6 j" M" ?  fend0 M8 S: u4 W0 o- O! C
4 |5 U* S" N5 n' W1 m5 L  U
to update-local-reputation
/ i8 ~+ S# l5 G! A0 }set [trade-record-one-len] of myself length [trade-record-one] of myself
. b3 N+ s" G$ Z6 r" {; i/ J) T  _) L7 c
$ m( T  M2 M. Q  }" o, V
;;if [trade-record-one-len] of myself > 3
1 Y; ^2 p- ]: p7 B$ E$ j- X
update-neighbor-total
# N0 Z* z, p' `% a$ g;;
更新邻居节点的数目,在此进行
6 _; d3 g  z' _7 rlet i 3$ b5 z& r# @, h$ ~) ?$ }$ k1 b6 a$ q/ ]
let sum-time 01 F; p$ `& Y( J+ R5 `2 W
while[i < [trade-record-one-len] of myself]
5 L1 q% s  [2 d% c1 j% J+ W[
+ G3 N1 B4 Y- f% oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 i( y' _  z+ U; H1 Z  m8 y
set i0 k, t2 Q( P/ H$ E) P5 \
( i + 1)

9 c9 S5 a4 D2 ?2 q]
, {, Y. p1 _5 e& ~' C1 t# Jlet j 3
" e( ]$ J* {1 o  ^* Ulet sum-money 0
: \4 R& Y# G) H5 {0 Kwhile[j < [trade-record-one-len] of myself]9 ~* h$ L2 T% I0 V5 Z% l' e
[3 k* D! k$ s$ N2 Q5 d0 o7 t3 x: y
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)' R0 y# ]) a" _. ]7 H" L7 ^
set j
2 |$ Y) ?/ S! m% A+ |( j + 1)
2 G' [7 m: L* e) Z" f7 R: C. Y
]
, H  S1 P% {- S0 u$ X, d% J; Glet k 3% n" e6 ^# i3 }' z7 s2 s5 v
let power 0
, W/ R) i6 A: F3 j( o  Dlet local 0+ @' Q% A3 r7 A. E5 Q! N2 m% c8 D
while [k <[trade-record-one-len] of myself]+ P& V4 d* w- v
[
& ^: F  C# S2 }- g  U4 b% p8 bset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
8 p, D  s3 {% f$ w. Vset k (k + 1)" `  `7 p3 q) e3 K; ?6 q
]3 Q" D0 G  D& z; F
set [local-reputation] of myself (local)0 C! J8 {" E  |$ z
end0 M( _  i4 e! L& k4 E
# r3 y2 J8 M" u  O
to update-neighbor-total8 t! r' j$ G" B3 `5 e) F$ ^0 D

! ?0 N  h8 ~+ p# a0 |if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 s  A& R( ?* J5 g4 r8 W& K+ _7 _8 A) N0 R( T3 x+ e1 C& T
; Q$ d  ^2 o0 a' x7 A3 G+ {7 c4 w0 ]# |
end& H" q* r8 u: J, B  Z+ Q: |# p
* W2 R4 x8 Q! U& N% n# Y1 V
to update-credibility-ijl
& R# a, B* \1 o1 O8 H- j6 O- h0 K& l9 _. [% C0 o/ O
;;
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。
, |& F+ q9 s$ N: A2 ^let l 0* B- V- j6 [* S4 E0 g+ @
while[ l < people ]
, s1 h+ i# k  a;;
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4 K+ K/ Z) {, V' ]
[
- Y" V3 I8 I8 A4 jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 v( b+ Z- @- M- Oif (trade-record-one-j-l-len > 3)& h% k) J4 I3 L, B
[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# c$ r; a8 m  }3 }  V6 e0 q
let i 3
2 m: t) |6 v. x& k' hlet sum-time 0" E; I; g& |) v- i8 J
while[i < trade-record-one-len]5 R0 b' D2 h. {9 [& L! Z
[
6 N9 x6 S. _0 |) w! t' S* ?; _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ R5 n; y( W3 B2 P4 Z
set i" a" u% M: s4 V2 u% G3 H: Q
( i + 1)
1 E2 m4 N( d7 z7 E% @4 a$ w6 c
]
+ S2 r* {0 B8 [* o- c) Blet credibility-i-j-l 0
- t4 h: L4 g0 [" w8 a;;i
评价(jjl的评价)) j1 B4 W8 ~' ^7 A6 _
let j 32 n5 H- K/ Q1 g7 E! j' C" d
let k 4
5 S% ?9 a3 ?) Fwhile[j < trade-record-one-len]3 l( B, B( J& N8 x3 O8 m
[1 `$ J; }- o( c7 P) k7 l4 D
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 O! F$ l, F8 ]8 Y- s. eset 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)8 w9 y( `7 y  j# ~: G: c+ s. z8 d
set j7 k- |- \& Z/ a# I
( j + 1)

0 x/ F4 R% `5 V$ n* e* `. H]
) e0 F# V7 t9 @$ Nset [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 ))
! w  q* r. l7 C2 O4 Y1 I% }, ]2 t" a
1 h" o$ T, `9 G

  B6 }" g4 y8 glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 k- R1 ^+ G0 _' W/ b
;;
及时更新il的评价质量的评价
3 A" a& A" L. x# ^. _9 Z  }5 @6 iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 h6 @- p- Z$ q- K: tset l (l + 1)4 E8 r! k4 S5 j/ T
]
4 U% c# F7 D, s; U0 Jend
7 I5 |" v5 O2 }$ B. v
' _7 E* K9 A/ q% [4 Kto update-credibility-list* N) O) v2 X% H- |3 q' a9 `' D' b
let i 0
! o+ {* c' F; l4 R$ P$ ~while[i < people]5 v: g/ P: ?2 W6 C
[7 |4 [7 R( H. r8 [: {* x
let j 0( {7 U! Q+ d4 s6 b; Y* m% k
let note 0
1 |7 r% G. B+ Clet k 0* K! y' g) }6 N3 f, ~
;;
计作出过评价的邻居节点的数目
% _( W$ p  ~5 R! K1 O6 ^while[j < people]; P  @( f1 ^3 M4 N- o
[4 n' f  b0 X- Y
if (item j( [credibility] of turtle (i + 1)) != -1)* m. S2 X1 M/ r
;;
判断是否给本turtle的评价质量做出过评价的节点
+ V" [& D- A: v5 G6 C[set note (note + item j ([credibility]of turtle (i + 1)))* r' s" L, ?9 n$ x2 f# X
;;*(exp (-(people - 2)))/(people - 2))]
- o& u: {) s  v7 V8 c
set k (k + 1)
1 |. G  k& J' I1 X1 D; O6 g. l]
0 Q% z: H2 {5 G+ W, Zset j (j + 1)7 g7 W2 e8 E1 [6 b% g
]0 J9 [+ u9 y, f3 v
set note (note *(exp (- (1 / k)))/ k)/ y' P$ n% y$ ]: K* k/ |
set credibility-list (replace-item i credibility-list note)4 G0 p  b( u# ^) ^. I
set i (i + 1)6 E# u) j( M& E$ E. j1 R
]
) h8 D$ Y# \# }end
2 ]8 a9 Y) q2 a% E2 k0 e1 \3 p
; Q* ^$ s1 H! G0 w1 Lto update-global-reputation-list
8 N4 f. X% r& A* H( E  Llet j 0
/ v9 j" {* f7 Z$ v# zwhile[j < people]
: M' e1 L# O4 U" r& z4 y8 Z[
3 k) L2 U& X3 Blet new 0+ C- m$ i4 B  C  ^
;;
暂存新的一个全局声誉
5 x+ k8 k/ f, u$ [3 Rlet i 04 A, O9 I% ^3 O4 X. X% R" B' b* E
let sum-money 0
( v7 E+ E4 F# R) y7 s) F. Blet credibility-money 0
' `4 @) j" k, j8 T5 I& w( V, i' Ewhile [i < people]
8 e. G" @4 @* A& h. q% h[% P/ b  y3 ?0 N7 n# o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) V/ c: _" }) H: ]
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) x- x% e+ \5 P4 d5 h) Y& oset i (i + 1)4 @3 K8 R# b' {
]
8 Y+ z3 E) f$ E4 H8 A; llet k 0
5 i1 F" g' e1 X; Z& V9 Qlet new1 0
! b! X) _( M2 l& nwhile [k < people]
# g' \8 F; j' L( e6 n[
# ]0 o# ~( W& m' P. v7 l% J+ Nset 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)
* J* ^2 F& @1 k- n0 ^set k (k + 1)9 _  S& L& B+ ?: i+ E
]
. \. g" x3 d# r' S" S! Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 x% n9 W0 d% E/ G8 J, @set global-reputation-list (replace-item j global-reputation-list new)
& Y$ u- `9 P0 D+ w5 Z- Q* Xset j (j + 1)& k: w/ N4 a: C" P$ b% h; i* i+ {9 p
]3 t( n  A7 O8 K  T9 `
end3 a  A" i1 ]8 {% b+ n5 Z

  e: p' ]- ?% S) h; O8 a# y
1 a5 Q7 J0 L- f# i9 W* d5 _8 j  ~5 A! X6 |
to get-color+ ]3 c! k2 R+ P! \9 I
4 \# P  Y0 o" C  H5 H
set color blue
5 C' M$ Z3 ^# ^: I5 ^% [+ F/ F
end! D  Y! k2 J  z6 P
' q' r' t8 C% K3 k( J
to poll-class$ e% b7 w3 }2 v$ |2 d, m" ^
end
! p  f' o& v3 }2 S
  d7 c$ `- y- K  Kto setup-plot1
8 L, |0 k, p) Q3 f9 |" s# p. R2 B% z3 I6 x) u9 ~
set-current-plot "Trends-of-Local-reputation"

' |5 D' m- h0 i  \9 V
5 A; ^; b$ K  [( Z1 N1 oset-plot-x-range 0 xmax

; Q& |9 U5 ~$ }( }* S
( `$ B% O1 _8 d* B3 e. I7 Rset-plot-y-range 0.0 ymax
7 k, A# P8 ?6 |
end6 u1 L* @. |" _8 v" m* g
' R3 H/ x! d' }5 a, Y
to setup-plot2
0 @( u( V9 E+ W# U' D! K1 K% E- M4 T& }6 H4 @5 M
set-current-plot "Trends-of-global-reputation"

. ]2 ~+ B2 N& S/ g
. n# A0 o- o3 w6 z/ x% ]0 W, [set-plot-x-range 0 xmax

$ K5 F, O) Z$ N. p# B
1 ^/ M5 P" `# k% G+ S) zset-plot-y-range 0.0 ymax

8 B( Y' ]3 y+ f3 f/ S0 |8 cend
4 H+ q. O" [3 T3 A* Q8 H, M) B+ W9 S- C; ]! V( }  t- L
to setup-plot3
1 u* D! X9 S3 |8 _9 x) a3 t& l& g  k3 h0 z
set-current-plot "Trends-of-credibility"
! w# X9 B+ M7 Z
4 l  }4 _% ^0 R, ~; r# n' @
set-plot-x-range 0 xmax

2 s. t5 l$ U6 e% D& W6 i9 [. w
* x- z8 }$ I- m$ m3 S5 R2 h) Wset-plot-y-range 0.0 ymax

: e2 _$ U, s2 v' T2 Eend  a% D2 B+ k7 L2 l8 m( ^
% N. J# ?! Q: n  y, l
to do-plots- x. g# L2 i  ^& S
set-current-plot "Trends-of-Local-reputation"0 `+ \# N4 l; ]9 \% n) [
set-current-plot-pen "Honest service"$ D* s& Z6 H6 K1 E
end, ]; D1 I. y' C$ l

: t% c& ]3 W8 ~( [2 R6 T4 D7 X[ 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./ ^. r. s8 e# ?5 M

) _# B& M+ W$ e# m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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