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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:: u6 b* n2 P* s  x
to do-business
( n$ e2 l( T. B. o! ]. u3 P rt random 360! ]5 W- p- o( y0 i
fd 1
% n' F+ N, L1 J1 S' _6 c; \- T ifelse(other turtles-here != nobody)[
$ }. K+ S# n: z, w8 O- S6 v6 F   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.
: d0 [# K* L  y6 K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) `" m6 h( B6 Q# H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 V) f. G. J: Q
   set [trade-record-one-len] of self length [trade-record-one] of self
5 ?8 v4 ?1 X! }: i$ p  A2 A" D* _   set trade-record-current( list (timer) (random money-upper-limit))
6 [" ~/ R; n6 A4 a% R2 V& F0 T: S9 m: A6 {8 R, H: i
问题的提示如下:
3 H/ `  Z; P( W
: u% Q9 K. ]5 x0 V9 z- oerror while turtle 50 running OF in procedure DO-BUSINESS: N4 X+ j5 Q1 V/ U$ G* t
  called by procedure GO% N6 m7 t7 P6 C+ t1 C8 |% O5 ?$ O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( K5 S7 w+ ~1 h$ _) C
(halted running of go). Q7 H$ D' F5 \' n
3 O6 [* z8 z' Z' M% ]9 C
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~~
# H% X* F0 B1 Q3 K' m& U/ C/ C; }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' E9 g: |& X! f2 f* i7 n
globals[
/ p- X1 q* o; V1 [, Y; ]xmax- u; z% V( c2 ]- d0 t' I
ymax+ V; [8 O, l$ M: Y. u" r0 X! b, g
global-reputation-list7 `( j( O; `7 D# Q# P
; [7 P1 k3 a8 N# y# c% m
;;
每一个turtle的全局声誉都存在此LIST. J  v2 b! Z, ?# Q! p5 s
credibility-list
" J5 H+ Z1 G. B( s' _;;
每一个turtle的评价可信度* Q& F5 e9 O0 M  J' ^( X
honest-service0 A6 O* n8 \6 G) W; t  q, X! Z
unhonest-service
0 C: I& W& _- G3 z2 a& Hoscillation
2 p  R) A( o( V. p8 }% zrand-dynamic' o: b4 o) q4 M8 B
]
% @1 [4 S/ d3 e$ q2 s5 I5 z3 X8 j
2 W; d* ]0 z& p1 s/ z& Yturtles-own[
: b) Z2 ?4 h& X6 c% i2 M2 k, Xtrade-record-all
% X; W3 A/ V& W;;a list of lists,
trade-record-one组成
$ J4 L. Q0 d$ \  l4 ]. ^trade-record-one
; g2 `6 X. C7 M$ T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 @& H1 o  n' _( ]5 p# Z

! i" ]; N- V; m  H/ R;;[
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 h" W3 D3 N0 R4 n. y8 i3 ?
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]
6 f, _! A; Z# Z7 A6 o+ Qcredibility-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list0 r: v/ L6 Z7 W! E. K
neighbor-total+ d' G3 k3 M: a) ?, _8 l6 m# o
;;
记录该turtle的邻居节点的数目
. u& p' o1 v& X3 N  ~: ytrade-time
* ?# E- L# D+ G' `8 s& ?/ H( F;;
当前发生交易的turtle的交易时间% H- N2 y! |4 |
appraise-give
+ n# T- O6 O5 g4 S' T; t2 i;;
当前发生交易时给出的评价  @& b1 _" ]& y, }! V" ^
appraise-receive
1 u* [- H, Y; }7 P6 U;;
当前发生交易时收到的评价! ^3 F; ~4 d# V/ Q1 O
appraise-time
* Q" Q' G; g$ H$ c5 S;;
当前发生交易时的评价时间( a9 n* G* |  j* X
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% F% L6 c$ S# O( @8 M5 E. T# l
trade-times-total
- Y8 N/ C6 O' G" `) L" S;;
与当前turtle的交易总次数' O1 K3 P/ Q. m4 r% c! a# T
trade-money-total
* R" b6 q5 q; L% c;;
与当前turtle的交易总金额
: E- y6 L2 B9 ?) `5 ]local-reputation
1 e& i- @5 B+ a! ]1 oglobal-reputation  e: `. v' E. C; t
credibility
% O  y. k9 r" K$ X! u* K  d;;
评价可信度,每次交易后都需要更新: r+ D8 ]3 F0 X* V1 B6 L
credibility-all3 m7 h# {. |3 W7 G3 u
;;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' w- z5 }  P- Q" Y3 B. w6 X/ R2 y4 y2 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
' ~3 }2 D  G0 ?5 jcredibility-one
2 A/ b  v7 i# Q;;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people5 i# R/ E$ u' ]4 f- }# V
global-proportion4 a' y2 W2 t$ W2 K9 X
customer
- k9 t! O0 \6 ~1 u& `customer-no* _  e  i  ^% y$ r( U4 f
trust-ok
- ~) P  ?; h6 `. {! Strade-record-one-len;;trade-record-one的长度
8 G4 d# X9 |# \( Q% O( |]8 L2 e9 I5 P8 V6 R

8 `% o; T" i$ x2 i$ h; B;;setup procedure
/ x* L# ~# F1 L3 e& u' {3 i) y7 U* q) ]8 d9 C7 j  s# I
to setup
* U. @+ l2 _: h# N5 b  D7 p# m0 c
1 N3 ]$ F( l2 }( I6 Vca
- g+ @5 s* c. F* z( Z! {5 A/ ^7 t

* d) O! J: T  j$ f  ~initialize-settings

3 z0 X' y2 J: j  V# P# r) t' B4 {: X+ B+ _; x7 V* x
crt people [setup-turtles]

5 u2 [& h& m5 s
) V! ?) r  J* D7 P5 [8 J+ k/ `reset-timer
# Y2 ?. X# _, k- K* D2 f, L
5 X3 G- L7 Y7 P' J
poll-class
( j6 D$ z4 f6 M/ ?- W( N; e4 \

5 Y7 u5 A/ C' Xsetup-plots
2 U8 d0 d1 C/ n  G& _
. p4 W# p5 c$ e7 C
do-plots
: b, p& p+ K4 e# r3 o
end
! a4 A- t( W! I' n. f& s1 E* ~& e
2 q3 X& ]7 C* N) N. H1 W: Hto initialize-settings
* A8 {6 q* R) w+ Q- h. k! Q3 L# e& s( O: r0 @
set global-reputation-list []

* v$ g- X. _$ q4 ?* X0 }
% l+ A9 ^! d1 m8 k" t* gset credibility-list n-values people [0.5]

% |! c/ |- e9 O; U/ p. {5 f! q# R& {2 q* Z7 l" `7 N4 [
set honest-service 0

2 `( ^! S1 m1 d" ]9 ?% s& k1 l; S7 ?% m) P7 ?2 T9 V! l
set unhonest-service 0
( c4 x( T1 _" T2 h, i7 m- g
& D. n" {% N' c% B& C: s$ Z2 s
set oscillation 0
4 e* w4 E2 `5 @
/ C" C0 N; w4 [% ~
set rand-dynamic 0

. Y0 }' y; I( l7 q0 Qend( n. @2 [9 w) ]+ e% G
8 v) y7 z. O( t0 H- k2 U5 A' B
to setup-turtles - d) _) X, ~! N
set shape "person", ?" Z8 _4 i: b& B: q
setxy random-xcor random-ycor
2 ~! A, n1 U- T: Y  ^# Mset trade-record-one []7 [3 R: M  _! o+ Y

# Q, ~0 k5 z' m( ^! o) Nset trade-record-all n-values people [(list (? + 1) 0 0)] 8 x: R! P! K: i# i6 H

) k3 c$ E9 S; x2 d% e' r/ ]set trade-record-current []
6 K) E. ~, g, I8 ]6 ?set credibility-receive []
) Z; Y6 C3 w4 q& ~set local-reputation 0.5& F( T% r6 P1 W: r* m# e0 p: I
set neighbor-total 04 f! }8 Q  k( p, Y4 O. z; u$ s' L
set trade-times-total 0
1 p; ^+ P5 a* o( Vset trade-money-total 0/ a+ c9 X' t9 T
set customer nobody5 T4 u$ e$ D5 \
set credibility-all n-values people [creat-credibility]: o9 v+ i& _5 e% I8 _: K
set credibility n-values people [-1]
9 {" R$ D3 @/ x5 e) h( }7 j8 Zget-color7 P9 U; G9 {; R; e9 }2 T
, u4 c/ t2 h, e! M' H: s. [  r
end' V; s/ N3 }" `
6 D& T5 q, [; s5 i6 u4 I
to-report creat-credibility0 K5 `- f8 h& h! k# l# h
report n-values people [0.5]
3 r* L  A* g9 G6 U- K. d( |/ h' i- |end- c  @+ j1 c, U9 {  m& r0 o! Y
0 |6 ~9 W: U% B% K
to setup-plots
! D9 F! x  b6 V2 I+ Q# j) s. C" o) n6 A: w+ i
set xmax 30
2 K7 B: y& D- B& U5 U2 x
7 O5 A: L7 x" E- o- o/ N6 q/ y
set ymax 1.0

; u, w- i5 ~9 r* N; b/ B4 \
! a' E6 b. j- T/ P0 B) {clear-all-plots
/ u% ]- R% K0 ~5 w  A6 O, Z
/ a% w- F0 R- U5 ~2 c) J8 T
setup-plot1
) Y( ^6 t9 {: ^" V# j
$ V) c$ p* q% p* J* x  H
setup-plot2
0 X# T. l; Z+ g( `5 h. I

3 H$ z# c6 f  y& S' usetup-plot3

, S/ N$ e, n: C: G( h; v' ?end4 Q: u1 _7 R: b. a+ G, R; e

* c) Q9 P- J  }3 `! H* r;;run time procedures
9 r1 _; e: Z4 Z; X# N, ^0 w+ s7 P+ A. e' F- d& k4 E1 H6 c
to go- |$ I9 U, D$ f& c4 k/ _; j

. @9 w8 v2 v6 K( k. G4 X) _" Task turtles [do-business]
! J; ?5 Z6 L5 c. `7 F, J6 b
end. ]. |) |3 K. F3 g8 Q: V0 }2 W5 G
3 G$ M$ a+ k) w* d/ x. M0 }1 U2 x
to do-business
* U. m9 X+ W$ C# q# A; ?

0 x: J+ Y3 ~% N7 ?7 I) N
* G& p% Z- ^, B& u' Ert random 360

! d1 u) l1 g( Y$ x
3 R+ W/ |9 J1 D; Z$ V6 Zfd 1

# I& M2 [' ?7 J3 [: i  p4 `# e  S$ |- u
ifelse(other turtles-here != nobody)[

% Z  b5 h; P2 ~) Q) Q# Z0 u8 K4 `0 H' g- Q
set customer one-of other turtles-here

7 ]4 Y) u9 l( x2 X0 B5 O# a
1 \* a" a, v  G. o2 q;; set [customer] of customer myself
; |9 ^6 K+ Q5 {
, _  ]% ~9 k" b, j& S- v
set [trade-record-one] of self item (([who] of customer) - 1)
4 E& t' p: Z3 T* B, _[trade-record-all]of self- ~7 X, u" N# t7 s& ]2 Z8 Q9 @
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! w/ m6 y. S7 t' W; y% g" f$ B6 U2 A1 l* r% Y
set [trade-record-one] of customer item (([who] of self) - 1)
8 w1 a5 j# }# G[trade-record-all]of customer

( U. Z) H; f; ?  j) c0 G% F0 z* M
set [trade-record-one-len] of self length [trade-record-one] of self
% j& B$ w, x' }- H. l+ H

& j! e6 B! O- U6 i+ ?* Gset trade-record-current( list (timer) (random money-upper-limit))
* o  p$ X6 T* n* `

+ y; F" \# {/ v5 I  Q6 ~ask self [do-trust]: J2 q! n' z5 O- c, A+ J) I/ o) \
;;
先求ij的信任度
2 o7 b1 }2 b& h5 }, D
9 L) ]$ k+ \9 }9 ]8 `3 w0 Rif ([trust-ok] of self)) R- c& B, `+ e, |4 ~8 W/ E( X0 z
;;
根据ij的信任度来决定是否与j进行交易[: z4 R+ X* z3 h5 Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# Q$ O( `0 S9 [

" e0 M# F9 X. w2 C7 K- Y9 i[
* B' T5 s+ u0 k! x4 T' G8 _/ F

: p) v+ J% H5 S* T1 M: W% G3 b: ~do-trade
& Q5 D5 i4 G) Y" m9 H, ^# P+ w

3 A& s$ }/ c3 d* V4 ^6 i+ xupdate-credibility-ijl

; T; G# O9 H6 p( P/ _% s$ B, g; w/ a9 @9 K- P
update-credibility-list
% y+ o& J! k+ Y# s' e

; }5 I+ D2 Z: f( b' @7 w& w9 G6 K# ~/ h6 J
update-global-reputation-list

7 ^5 {! j" ], D" j3 s3 O- K( W8 I( s* p+ F! |
poll-class

  i# ^+ a$ x3 N/ g  ?$ W
/ m7 ?: c' V9 U2 j: zget-color
3 ~  R  s- r3 m  y2 g

4 b( ]) a) o" `' ^3 j( _8 `]]
: L  R; K( o" }" m# @/ i- |' F8 o4 e) o+ X/ d- z
;;
如果所得的信任度满足条件,则进行交易; v8 }1 E+ t. g1 T; _2 U) g# v
$ g1 `* [) Z  n: v6 f" \
[
( h* @8 k# s7 w! G
) n) R  \% m/ B! B5 u
rt random 360
: C( N8 ^% D, c# @. J$ T
! N4 B2 C8 Z0 N/ o; T$ z) y! M- L
fd 1

" c' A& {2 G# v; j- J
, q0 R5 v% d& L]
$ S/ u4 l8 o+ o4 @% s1 ?* b8 h' W

/ P) t1 Q- J- Q7 A! T6 f1 w0 w9 Iend
; J+ k/ q* [$ r5 t. o

# C6 f" S3 T, f; @' ^/ w# W' D9 ]4 xto do-trust
% j, A  E; ], b% @; T2 k2 m  u  ?set trust-ok False
" N. D3 k8 o2 ]6 J' A  m3 N$ E' I
' f7 _: B$ x9 B$ q& E2 v
4 r8 @' t: v+ I* H: z
let max-trade-times 09 m- G1 v. Y8 F. \% w  X6 D. G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 e" x$ A1 T& L+ _! |
let max-trade-money 0/ a- M" }0 a8 Q: e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 r1 J' M, ^: N/ k, r7 Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 Y' T. n* a, O% W# {

, h; Y9 v- n' X( A# W/ Y: }

- s$ @5 |+ h% v9 h/ F. I* E$ ?, Oget-global-proportion; n7 j  h1 z7 ]6 f* f" ^
let trust-value
3 G; K; w" k. U, n7 \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)
. p# `/ [. x- W
if(trust-value > trade-trust-value)' @9 |4 S! N: S' j: z" _" \: z4 [
[set trust-ok true]
  r& a4 Q' D! ^; ^/ V( _end2 g* W& @5 B2 w% }
- v9 }/ M; k8 z9 h
to get-global-proportion
7 Q# I1 o8 Z/ tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ c+ v  d+ U1 m, C3 _' q[set global-proportion 0]
  O9 ?+ Z! O4 X  r- s1 @[let i 07 D/ K; ^% ^  A/ b) ?" _* F5 a8 f
let sum-money 0
4 D# i3 {, Z$ M) h( M6 qwhile[ i < people]( _+ |" p. w! w4 G
[' I& e( C6 m1 {$ U0 L
if( length (item i
# A6 B! r3 x; ~) P, Y5 p' ]* y' M[trade-record-all] of customer) > 3 )
5 j* j( \$ n; l/ x9 k) C) v
[
' [- f# `/ V# V  ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 u. ]# m$ p! r6 B4 ~/ ^
]5 h) ^! A$ }- }8 n) S, q1 G6 U. i
]; F0 r% {$ X# K8 v* e! d$ O
let j 07 c+ X# O# a; j: q) F
let note 09 E  z  }9 L% b4 V8 ]' \. l! G* N" D
while[ j < people]; y! A8 X7 C/ A1 i. d& S
[4 a) J* X! g+ [" t' @
if( length (item i1 V# J" W. d) R  V& b
[trade-record-all] of customer) > 3 )
+ P# s. y' T; J1 T
[, f% d5 Y2 X: g, l1 X' o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; V& i" N& P; [9 V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% F) U8 y; x. _/ }2 i1 w2 X/ U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 h( O+ a( {" I; p]
# X+ ~6 Y4 k  I' w( q2 Z]
+ F1 B# w: d2 m# {) Uset global-proportion note) p! M+ v% h" u; l, _. e  c
]' i/ r# ^1 v0 t
end0 _/ Z, m  i8 u( _3 N( R: N
9 {1 Y+ N4 ]6 E3 [" H  s
to do-trade' J4 V8 }' v+ U) }# v7 y* F
;;
这个过程实际上是给双方作出评价的过程4 }, y: G: q1 r/ I5 i$ o) ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 M! _2 o- y. o4 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( D& W8 ?2 v3 R) D/ bset trade-record-current lput(timer) trade-record-current
; Z/ A; Q0 h8 U" f+ O;;
评价时间& K% D1 J* P: w7 _3 k
ask myself [$ r2 T! N; u/ Q' T  O+ q
update-local-reputation
2 _/ j, v% j! ^/ t, Q) y( j: U6 Oset trade-record-current lput([local-reputation] of myself) trade-record-current
- n6 Z4 u% Z) \/ t]+ j8 T3 K! [' y! R/ t  z& T0 |$ U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 F0 x" ?& p* L;;
将此次交易的记录加入到trade-record-one; G) i; Q# u' ?/ X  \. [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! Q6 e0 e% n8 l# c5 ?( P( Dlet note (item 2 trade-record-current )- Z) a% A' {+ M; y& j& K& r$ M
set trade-record-current
2 f2 Q' f# w' t( h$ j3 R(replace-item 2 trade-record-current (item 3 trade-record-current))

( e+ \+ G1 c! H# m/ |# H0 n- d/ l/ ^set trade-record-current! C+ m5 Q1 ?. }) o
(replace-item 3 trade-record-current note)
# R: }" h0 U8 N& h/ w2 I+ k) [9 K4 _5 a

% l; Y) n  L6 I" Z6 z* W1 `ask customer [
" \, W' U/ F+ w9 c+ E2 pupdate-local-reputation
6 N2 w' G+ X1 k+ rset trade-record-current
( Y- g: p) _% H7 C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 j+ T8 r" Y8 A1 g4 q6 Z]9 h8 O6 p% S* _; x, C. v! h6 w
3 q1 t( m1 P* D. V. V; |

. I" C5 G) c( [' W' r0 R5 W' dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" R; {3 N4 ]# H3 e! R

, z* q* |0 G0 W; X# gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" t, G- G: u9 K: S;;
将此次交易的记录加入到customertrade-record-all6 C5 f  D3 Z' o4 s& v3 I6 e
end' X2 z$ `2 P2 j) M1 P* G
4 j# B0 b. I5 K% G! y' m) Q
to update-local-reputation* O! g% p; _% V. ?4 c9 D7 r
set [trade-record-one-len] of myself length [trade-record-one] of myself
( _  b, k: v6 X! t. a
, W* r! v* v2 q, J4 R7 p
% G9 ?. F! E1 |; X, x0 g;;if [trade-record-one-len] of myself > 3
2 P2 h3 S& r9 J, H2 m" N9 D: r
update-neighbor-total
% O; a1 w1 {  x2 D;;
更新邻居节点的数目,在此进行' ^: x9 }! D! h- i8 c# s! z
let i 3- u) z: g0 g/ G5 W  ]% P) o
let sum-time 0
$ p0 M, p5 g" u2 v/ U; P- ]while[i < [trade-record-one-len] of myself]
. M( H+ l1 |5 R* o: ?# B+ {[
) n# R. W' [( b- `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 @0 {5 t! o; nset i' P5 \# S; k! i% j
( i + 1)
7 j% o" }0 I9 d$ J: c0 S) S" l* v
]
% r% g6 {- a2 rlet j 3- p0 n" D* ?0 u
let sum-money 0
/ r! b$ I$ i: v6 bwhile[j < [trade-record-one-len] of myself]
! ]8 N% W$ f4 A& l5 W. z[" W. h! d3 n2 Y# w  _
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)0 o9 @( n8 H& r% ?% v, A) d
set j
: [5 ?- [2 X2 u% m+ y" h( j + 1)
$ Y: S  d! G* ~1 W4 r) N! Y
]. r9 V5 J  D1 A
let k 3
. z$ J( v7 U) J1 Clet power 0
, {0 T) ?0 D* ^) p2 Flet local 06 h; |+ l& @9 G8 d& a" w
while [k <[trade-record-one-len] of myself]
/ ~% L. ]0 T0 f8 T. z[0 v0 }' a# ?- I& O; G" W
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) " P9 z+ I3 `+ {
set k (k + 1)1 C- Y9 ?& ^- ~* @+ W: ]
]
& v. y' e/ M, l, Kset [local-reputation] of myself (local)
' ?9 [" }8 O0 `: F6 B) W/ @9 Pend3 _( K& `( z& S$ V' K4 C

8 c9 T( j& ^% E7 mto update-neighbor-total: p1 W1 T! I! R$ d" G+ e% T
; ?0 ?3 h8 d! G3 ^
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 T( L! r$ q: n; B* W

9 g* k! g5 x5 V6 ?. u: Y
% p6 V, y- Z2 r: Y# ?/ m1 n) b' f
end
2 N$ b3 G( Q" u. `! }% P  ?
5 g$ `- l; f, G& Fto update-credibility-ijl
) X7 @$ C3 T; o( m. n. c/ d8 u7 H
' k* C0 _9 W/ z4 T;;
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。
. ]8 r; ], @/ y. m8 y) |6 f$ zlet l 0% U# `3 H* c" {: ^& U9 N4 u$ s1 ?0 {
while[ l < people ]
3 w+ }' N7 w0 K;;
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7 h4 }: e( @+ F' Z; p
[
& g+ N1 N# o# ]6 p  Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' j+ p* n; v4 |, M0 g5 d8 a
if (trade-record-one-j-l-len > 3)
- {3 a- x9 k1 \8 w; x[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
/ C5 @' v1 u3 x6 s& plet i 34 T: |, ~1 H) L
let sum-time 0* n2 e+ p% O# d( B
while[i < trade-record-one-len]
) l1 V, P2 Q. H+ K- X: ][6 m) k; X+ `9 ]6 N3 ]1 ^5 A) O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# F6 \, ]- s6 `
set i- e/ h. h+ y4 e  T
( i + 1)

) Q7 u/ ?( t; y$ J]
" X7 V$ L6 `0 E1 u6 Klet credibility-i-j-l 04 c) R  z+ O2 V. u
;;i
评价(jjl的评价)
. p! t$ I& ]! y' Plet j 3
+ @$ ]2 J) Y) Y$ m( Dlet k 4( [/ E+ l+ |9 ~$ J
while[j < trade-record-one-len]- x3 X3 [6 Z* N! T
[" ]9 k& q5 D5 n. Z! u* |8 e
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) A* Q- J7 [7 b: z3 b1 g
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)( ?1 \6 ?& A/ F- F6 S6 ?8 U4 V
set j3 H, U' X& K$ l: g
( j + 1)
9 M0 y# A1 m: d5 q% u8 a% h
]% J: z' ]( B" S$ t9 D2 U
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 )), M: c; p+ F. R5 p6 ]
2 g+ p# j0 A  ?" _& m: i
; Q# k& g( Z' _, K+ w: w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 W2 N3 B+ n3 Y' _/ e/ B/ t/ K
;;
及时更新il的评价质量的评价6 s3 z( f( L# ?  L1 ?
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; x5 x. e" ]: |# U7 e7 p6 Mset l (l + 1)* I! Q* Y) Y5 W" B2 m4 Q0 b
]% ~* @- p! I6 ^
end
' ^( }8 I2 R  i: Q" X7 d0 V4 D  w( Q9 k# ~# C) R
to update-credibility-list
8 Y' |' b# V# u  ]+ ?( v* z/ _let i 0/ T1 G* S% w2 m
while[i < people]; T; s" M+ j1 ~+ b' K
[
" [$ p# ?, B$ k. B- J( wlet j 09 H' N+ o) a* j4 B  L3 q
let note 0
; @: I- ?% x) x) ?. r$ ?let k 0
6 W$ [4 L. |/ D. M9 ];;
计作出过评价的邻居节点的数目% }, K) [% i  L5 Z, {# _2 u3 @
while[j < people]
7 U- ^9 c6 w3 }4 N[
- b% f* ^6 l4 _: Cif (item j( [credibility] of turtle (i + 1)) != -1)
# e( A6 j0 `  S. w;;
判断是否给本turtle的评价质量做出过评价的节点$ K- _8 p  I) o
[set note (note + item j ([credibility]of turtle (i + 1)))! P6 t# I: A! x- N
;;*(exp (-(people - 2)))/(people - 2))]

0 I6 R, G! Q$ a4 ]% v" R  J7 e$ @3 Uset k (k + 1)2 J- n  {0 @! x0 S
]
' u0 Y' U& ^/ c( Q& [- Pset j (j + 1)
1 m* c% j; e8 r% ~# g1 I1 W5 r/ F]
9 v! w, ^7 `& y7 m- c% Jset note (note *(exp (- (1 / k)))/ k)* X, a2 k( w' I) T6 M
set credibility-list (replace-item i credibility-list note)/ U1 m7 ~+ i( P' ^6 n
set i (i + 1)
/ D3 q. o$ X+ R2 f: b]  Q5 G: C4 w" T3 s  E
end
& Y: `+ x+ t! ~/ g
1 n9 n" {/ z* V( Cto update-global-reputation-list: }( q; m; l$ d# Z5 Z) ^
let j 0
! M7 G/ C! x6 \6 B! z5 ]- \$ f! ywhile[j < people]
/ F  A4 ~" I9 c: Y6 j" v& Q/ H[
! J2 e# r. D1 |0 }7 e$ x1 B; i9 ^" ulet new 0
2 P4 g  A  K; s0 y; u7 S;;
暂存新的一个全局声誉
) f$ _% Q( A! T- alet i 0& E. @9 u! l% p$ {' G$ x/ x6 ~
let sum-money 0
: U6 K/ q1 G' ~3 \7 K4 U$ rlet credibility-money 0
2 _' O" b, s. z% S! `4 Cwhile [i < people]9 _/ p1 ?4 r2 E. p! N
[
, y' O$ c" u- X' Q4 `4 j5 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 Y2 r- e- S7 T; P9 u+ D
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 `7 L* F- A2 |+ z/ W: Zset i (i + 1)4 Z- @  \5 a5 g/ Q9 s
]; X; D: y7 b# r1 e" ?  ~9 ?
let k 0
" L- e) k' F* llet new1 0
# J$ e/ T' Z1 U' K/ d+ ?while [k < people]
* R7 `0 z7 j' U* _  m+ C[
# N8 f( l0 [! j, qset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
- ~8 V+ E6 c# _& @set k (k + 1)7 H' O, L6 u: i: d8 j2 j+ H
]" d6 v: |- b, @1 B) R. J+ [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 |1 C9 J- K! b, C4 u9 U: `
set global-reputation-list (replace-item j global-reputation-list new)
5 I6 J# i7 {% C+ ?" bset j (j + 1)" {( U! l2 r# `4 H- ~3 C2 l$ I; p
]1 ?( `" `9 L8 ?( F# m; R% z  ?
end9 X9 |3 R3 K# P" M
8 h# U+ e9 E% F' Z: r

4 _2 t" U! h2 ?4 f) A. v: d4 D8 U
+ }5 U! Q* w. Q* h- w% E6 e1 ?1 g% [to get-color
6 @, A1 r' B9 \5 D6 |' H) B5 l# L. s
5 d2 ?5 h* ~! [/ \- gset color blue
* A, Z5 d! m: n' b3 Z' V5 w
end* l4 D- r* r- u5 o- W" S. O4 b
( m' {9 x8 [/ y
to poll-class) I. T9 p, P$ S- b" _' D9 |
end7 i- V* T8 `$ t$ \

2 t% [& |2 t( tto setup-plot11 I/ D4 U% `+ w) ~; q  }6 x7 k* _
8 ]" a, R! Q- o; e: i) x
set-current-plot "Trends-of-Local-reputation"

, ^1 K# O' f9 O5 e# T
1 M( m7 X  O- i: M- D& P+ A* X9 |set-plot-x-range 0 xmax
! {4 E* t5 l' o% \5 A5 J6 \; f4 G
4 y3 i# @* N8 }6 [
set-plot-y-range 0.0 ymax

# t5 D# A# Z" hend# ^) l) U# Q/ I7 P8 d% k

& H% o; j7 g' A8 I0 ]# yto setup-plot2# J' {* d, a* |# c1 d. F6 x
" E7 A$ `+ G6 O$ S* D$ a0 Y0 J
set-current-plot "Trends-of-global-reputation"

& A' m  O& N) v  W) ]4 o% I% {
set-plot-x-range 0 xmax
0 k; }$ ^* L! c4 r: n

! c' R3 {7 o: Q" Yset-plot-y-range 0.0 ymax
) n+ Q! I% O# d6 Z
end
" h/ d" R" k, m' s, S
' ^! \5 J' x6 {' B; zto setup-plot3& C9 Y* z& C" {. u2 u: S5 g0 }7 X
9 D  v/ D8 P/ e- O
set-current-plot "Trends-of-credibility"

) c8 h+ p7 K( U. q# O
6 ]- |& e$ p; e. D. J9 x$ vset-plot-x-range 0 xmax
5 s0 d, ]* x# v! p

: X- Y+ B  G7 G) u: j* N  h& C# Aset-plot-y-range 0.0 ymax

! |/ Y2 X1 |% X" aend) _6 T9 P$ O7 Z: d( F

! i+ O2 W2 W6 U: [& @, qto do-plots' l) Q% d2 o4 B1 h' D5 ?% n
set-current-plot "Trends-of-Local-reputation"
8 n1 F" }7 W! ]( k6 a$ H8 oset-current-plot-pen "Honest service"
  |8 m4 j& r$ f4 k* n5 x! tend7 x; Z8 p. P. V+ L  K# {: Q6 e

2 B7 U6 R7 @6 g6 A[ 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.
* w. [9 J7 z. c9 t
$ g  o' i# W- R- N* G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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