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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:* k6 ?& U3 E; d
to do-business / z/ l$ }* [* p" `1 x- c6 M2 ]7 ?. ^. D
rt random 360
- z1 t" v& p: }$ v fd 1# B, U* B$ D: J
ifelse(other turtles-here != nobody)[3 k# G% i, U6 ~# n. o1 a
   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.
" v- z$ O; g2 z' V- ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, X6 V2 l" j8 `1 d. {! H, T% \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ @( m# S% g5 ~2 i0 C6 u
   set [trade-record-one-len] of self length [trade-record-one] of self
! l/ v7 h' @; M2 x5 H& A; ^. K/ b   set trade-record-current( list (timer) (random money-upper-limit))& O7 X" _: Z! v8 _' g; P

5 a2 w" I( A; F2 W  k问题的提示如下:+ e. M) [# G8 s' \3 h3 i

  p/ t2 q" ]9 Q! L( Lerror while turtle 50 running OF in procedure DO-BUSINESS
% ]6 W- K0 S  h: ~  v7 Z. q  called by procedure GO- I- R6 L) S# S2 E3 G: `' t# l% N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* e! c0 E" E% i6 h" m
(halted running of go)
$ H0 L& V9 o1 |* W, v, E, V6 d8 z) c8 K
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 ?2 x8 Z' E+ S6 x0 V; 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3 O+ r1 v% d# e! h
globals[( z% ]) i& ~4 [1 R
xmax
' m! Y+ a& M* L* i8 S0 j$ wymax
! ?, f: _, G6 r3 U4 T' Xglobal-reputation-list
5 g4 Q- d! A& ^$ A5 r
3 |! a% t& o. G  y1 z4 r9 j;;
每一个turtle的全局声誉都存在此LIST
7 ~" x  `0 r' O+ p0 scredibility-list
) }% G( D. e; s' l9 X: v5 C;;
每一个turtle的评价可信度. ?1 |" ^- C" |$ m
honest-service& d1 T. S" }- `; L$ T, A; a+ W
unhonest-service
, o9 _" R3 l5 Uoscillation
5 {) R+ D% V  \; e5 W% H" prand-dynamic
- Q$ S& X8 f6 a+ _* l]0 p! r& C4 B; B3 B& K8 D& N7 Y3 A
) N% p, A$ ]% P0 Q! y% \
turtles-own[* F' `9 ~6 S% b7 q* t
trade-record-all  k2 P3 P5 G5 R+ y; e6 c
;;a list of lists,
trade-record-one组成% I6 j( ]0 I7 h# b1 l5 C
trade-record-one9 n; \; D& t) P6 L
;;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 M7 Z* L) p/ {: y5 p
% H4 G, P) y% e: f) C! u, I8 U) ^" g
;;[
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]]
/ Q0 i. H) {+ \5 Y. z# Ttrade-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]3 s; [) F+ f- S
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% F1 }' Q1 P! G
neighbor-total' b4 B# }4 e, |* c
;;
记录该turtle的邻居节点的数目
1 R5 B3 ?" K7 Ptrade-time
- D5 Y' j  Y  Y0 B;;
当前发生交易的turtle的交易时间
4 L) `* j1 l' S9 K; N, wappraise-give5 h6 O$ J4 a$ p
;;
当前发生交易时给出的评价
: z) X3 r4 {8 v7 H4 f2 `# Wappraise-receive
4 A5 Q9 k& n( \* ^;;
当前发生交易时收到的评价
3 P) y' z, W: \8 }appraise-time* }$ L( ?+ l9 g" d0 x7 G) ?) ?; b
;;
当前发生交易时的评价时间7 J. A- y8 I/ r" G5 A' d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 O& q# }3 y' Y4 wtrade-times-total
" q& ~! g1 `0 S7 E! H3 J- K! o;;
与当前turtle的交易总次数! Z* b& V+ u" F# J, R- L
trade-money-total8 D& m8 M- Q5 |& L+ ^& }" U
;;
与当前turtle的交易总金额
! G- ?; V6 Y9 V% d! k1 ?; flocal-reputation
! I" P2 d4 W# {' Q3 nglobal-reputation
# E) H4 j5 R$ U! _  }6 `credibility3 D2 I$ Y7 o2 U1 j
;;
评价可信度,每次交易后都需要更新
) I/ ^2 R* w8 Z( ]$ T' g) y. Hcredibility-all
5 l& F  q9 l) S' Z2 {;;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4 Z# [7 k1 i, Y* y: Q
) Z) @7 ~7 {: w4 ?
;;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* S! o! ^- D1 e& p
credibility-one
+ O% W' ^) k# c! Z9 u;;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, m1 p" Q9 Z/ a' _0 r; m* x% d
global-proportion& L' g6 w8 ]' G4 {- b) K8 ~$ \! |8 W, W
customer
) U5 M! ^8 P9 X% X1 ]customer-no. R$ _, c0 J  j1 K1 _' Y: ~  w
trust-ok
1 h: i* r5 f) S' ]2 b+ ^trade-record-one-len;;trade-record-one的长度, G$ t2 y( E3 i0 a8 N3 x# {
]
9 O+ L* c! x6 h( |# \8 F) S
4 g) f/ c9 m7 a% K+ };;setup procedure; C: W% v+ z  _6 o6 Z

  J6 D7 Z% S* q# p! Jto setup
" b4 z! t. }$ O, W# V5 t7 v
6 K, t$ h$ V: d! gca
' o. u: j) T7 E
- O! `  @# f. G2 h6 g* g! m2 b) d
initialize-settings
/ P% e2 V/ a+ X

0 m! _+ `  O, E5 n! `5 Xcrt people [setup-turtles]

3 m9 K+ [0 d+ X" i) L( F8 K+ j  o, m) \
reset-timer

$ \* F  ?* u# t# H4 }/ [' X; W
4 S# f% @" ~, V+ B0 M2 K. ]poll-class

' f" f6 K$ v- P8 @
7 u" Q# ~$ C" ksetup-plots
1 S3 {9 i. X' N' L- ~
1 @* ]8 S: s7 M+ h: j
do-plots

; X/ k( L0 m/ }; e' Qend9 Z2 |7 M0 [* o5 ?( w$ n& c

" u+ o- @. w$ `$ Oto initialize-settings
0 x0 I; x/ W+ c4 ~: Z$ i
- W# _; `4 ?) A& `) C+ m3 V0 dset global-reputation-list []
  i, x( m9 `  C) J9 \% J
! P& \8 i0 v; L0 F. b: F4 c( O* b
set credibility-list n-values people [0.5]
5 m0 J$ `. }6 z6 N3 ?
2 P" \" W: X* O+ S- e1 ?. v3 l: ~
set honest-service 0

. a1 \6 r5 ?/ q* [% m, x+ i. F% F( B1 v6 a; u  f9 X' M
set unhonest-service 0
# \% l# B4 N3 `3 B) o

* [; B8 K, K! y" aset oscillation 0
) z4 S! f$ J5 i2 [8 T) [& Y
4 S8 [+ G- W+ C4 B6 W- P* o1 O
set rand-dynamic 0
1 R5 i( n; ]; f) H6 c
end
  V$ X7 P, P6 _' m! N( `1 `6 ?0 Q: N& t
to setup-turtles
8 m4 h" n: u5 [) H. Vset shape "person"
+ X7 X3 f! v/ l/ ~% r2 Hsetxy random-xcor random-ycor" a* q' r. S, W$ \
set trade-record-one []
* j2 E& @; Z  x
  w8 g' ?9 u! v' M* O
set trade-record-all n-values people [(list (? + 1) 0 0)] ! C( n0 e& L/ V: v4 K( Y" M

( t  N. x( A$ _: @4 i: k" m9 Jset trade-record-current []" B; B& `- t' |+ }4 q; \2 K
set credibility-receive []/ b& r2 U. J* ^) e, a
set local-reputation 0.5
0 J; Z! ~8 i$ l, y- w: g! V$ Wset neighbor-total 02 s9 o# B6 o0 j) `
set trade-times-total 08 ]* F) P, Y" L2 J5 y
set trade-money-total 0
/ U: A. T$ i, ~0 uset customer nobody
& B/ |( s) w/ J* A6 p! hset credibility-all n-values people [creat-credibility]
5 N4 j! U3 B0 p9 Yset credibility n-values people [-1]
. Q4 f7 ]% A/ q2 a7 v2 Iget-color- Q2 O/ Z, N9 I6 X9 c

, s6 W- }$ {5 V8 v- Z8 }( S: iend6 {  V3 \+ |/ K* K( G7 R
9 c% n6 D, l: W% q) |/ e) R, I
to-report creat-credibility
2 |& s7 H8 J1 X$ Yreport n-values people [0.5]
' c( Z9 i6 r) P( Gend. j5 V& H+ M9 O5 T5 g0 P4 g

6 z. b( M7 o* F) ]& hto setup-plots
4 ^, N+ q  `+ {2 W- A) f" ~, _- s+ _* M$ \
set xmax 30
( P6 k1 B$ F1 Z, i  K* p" [! F( `
# }$ J  l1 ^- s2 F2 H
set ymax 1.0

6 D" Y! r8 e% T! b/ b* C+ E/ _2 T9 l
clear-all-plots
) I6 H0 z% `* Y1 Y% z5 ?

& p: J2 p' F% wsetup-plot1

0 [% k" G$ `/ U8 D% V- |5 `. P  p' S  w8 H& m& J
setup-plot2
% Y1 z7 M. L) b) N! q
" E3 T; \9 w3 n
setup-plot3
3 L. c; f/ i6 ^' p- f( x
end2 B! H7 {& X, `+ [4 [
$ N" r* d) N0 f. E$ k& t! y9 u
;;run time procedures
" d. `7 N. W7 r# K' t# _, i6 F. h* e  g0 m
to go8 g& P& l+ f5 F

% d  L  q( u% lask turtles [do-business]

* I7 ], y* ?5 P% E' O8 t. K9 w$ K" Xend
$ X' }! U0 e" N3 L/ I0 ~* }- M
6 K: ]# [1 E. X: ^* v9 [7 Uto do-business
& ^4 N0 A0 m2 R" m

' X& u. Z- k& m/ n6 E* ?: Y+ V3 M6 ?: \& c. {% L" F
rt random 360
; Z: S" f7 A- c
8 U5 l* Y& k6 ~. B4 v" r
fd 1
- @5 F% {+ G" ]9 d
" O) W* K. s* N  x
ifelse(other turtles-here != nobody)[

1 J% @5 z$ A( Y: x2 W3 w
5 N9 I9 K$ Q. @& G) R8 vset customer one-of other turtles-here

2 s0 I. ^+ Y+ F- B
  q% A4 Q! ~0 f) N5 C; i3 ]7 W: H;; set [customer] of customer myself

6 E0 |) h$ K- ]; m* O' O5 I  ~' n7 Z: ^8 \+ b0 s" |$ G
set [trade-record-one] of self item (([who] of customer) - 1)  z7 @4 D* ?* ^4 J
[trade-record-all]of self  b3 s$ U5 E! u1 `. K2 V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 K- I7 h2 h* M4 F$ X3 W
1 k- }  o, I3 o( i7 f
set [trade-record-one] of customer item (([who] of self) - 1)3 X5 @4 Q; b0 G& A' _, U
[trade-record-all]of customer

- L' z9 N, x% m4 ]2 l3 P& w/ [4 @9 P1 d
set [trade-record-one-len] of self length [trade-record-one] of self
% a) m$ d# T3 V) ]

. z" D  {1 |5 n* ~8 p* Mset trade-record-current( list (timer) (random money-upper-limit))

8 Q' F& f$ o" j2 }
+ r/ R7 y% ^) s% Gask self [do-trust]
7 I7 q+ j1 B% k* w4 y* f% D;;
先求ij的信任度
* g7 z& y; l- Q% Q. ~' N! ~3 e) v8 V; J5 a$ ^8 x. I& g
if ([trust-ok] of self)
% s! j: H+ ~( T0 A. B;;
根据ij的信任度来决定是否与j进行交易[
1 f+ y* s& e' m) _ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 g, b2 L+ e( z) g8 g
# D0 v/ I4 j, J% z5 C[

( o- G+ ^+ W, @/ {  L" v
" t! I' X5 E1 @8 a+ ^- ^7 ?do-trade

, n' h  u, D* i, V
9 V# R4 ~8 Z# D& V; Kupdate-credibility-ijl

- E/ i& Z2 ]' s$ G! G  \2 b" {, M0 L1 D5 Q' @7 n" G$ D
update-credibility-list
2 C- {* u) V' O& W

0 t( r6 e; y; j7 m8 t0 p* l3 i4 Z  L9 y3 }; K$ _: g& X
update-global-reputation-list

$ ~# f( X6 S/ W% \9 v' ~; c3 d; C# p
poll-class
# b4 ~' u- I' W% [- B) Y
/ G5 K: _, ^! Q' Q0 ^4 v
get-color

6 k! g( H/ }4 G) Q( U8 j2 O& z' E/ ~, S* M- H+ ?8 r: ?; }
]]
. [# I( c1 j. ]( k9 U' H* R/ p4 _! r- L8 C: @" V  S
;;
如果所得的信任度满足条件,则进行交易
, n! ]4 O; g' U6 C- I
( h* i6 B* O, `3 y. [, ~  [[

1 f1 t3 a8 s1 f9 {) K2 i( _, P+ e. f  h9 k6 C3 C! a) m8 q2 p" G
rt random 360
# v9 m! z: y$ y* H
( u" C5 C5 P5 ^  G) {. [$ T
fd 1
/ A! [6 R" m! e% G# |; ?
, b  n8 x. l1 ^; j
]
& M6 R! ]3 x) D0 X) _0 L3 ~. Z
5 ^8 ]6 w& q6 [: d1 e
end
- c% [9 j; n% L# C; W
' }' C2 X8 C6 j. Z3 a' Z& |
to do-trust
; ]$ Z( \& _, z% ?set trust-ok False
0 t( n4 e. C, h& R& @$ X# Q* u& v6 ]) }4 ~% e# C; c
- @' X( r! c; X( O3 G+ f( D  E; \
let max-trade-times 05 J* L- d  t- g* g, H9 X5 Z' R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; {- A& x% ?' e1 f" V
let max-trade-money 04 {1 ?1 U, G  n" o
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 j. k2 h' s* W7 s: w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; Z; r$ \8 M# T  t: D% v" m+ j9 K2 V: H- T
& H% L2 c( p0 p  u$ J
get-global-proportion' b7 C* _$ E+ ]- T, n9 ~) k
let trust-value8 E* L1 @# K3 z
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)

" s' O/ A* A& `- k6 K; B1 ]if(trust-value > trade-trust-value)
4 s* R7 h9 Z# D0 C, ^  m[set trust-ok true]
' m- Q: [6 t# O% R/ I9 [4 ]end- ?5 j' A( p% S" K+ j) b

: Y: C2 ]5 Y6 J# R. o8 O0 l8 ^2 B8 Mto get-global-proportion: Y: B3 A& E/ G+ b$ `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 n, d/ K4 F3 G) v) K
[set global-proportion 0]1 a* q1 B5 e! O" W! N' g
[let i 0
5 L- i6 u, F; Mlet sum-money 06 b$ O7 {3 E" y+ `7 }
while[ i < people]
$ g# a0 t) c2 |, d& a" n[- w5 f) w/ B0 {1 H9 P0 F
if( length (item i
/ i9 u0 g2 t& j  W1 g% r$ }[trade-record-all] of customer) > 3 )

' @" [5 U8 u- {6 U7 d[# i0 ^0 Q* |1 C: ]0 c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; N, C/ a! _+ V7 e1 \: Z7 n% y]
: i; _/ N  K0 J- @]$ |3 ^/ T/ `2 w8 K
let j 0
8 g5 |$ I- W; x1 e4 j: G* wlet note 0. r  }* g: u+ j- a9 ]
while[ j < people]! O% D' {9 d0 r5 I
[
* F) Z; D1 [. w" [8 {if( length (item i3 a4 C+ b8 y5 q3 r% l$ j& E
[trade-record-all] of customer) > 3 )
. ~  z; F- F+ f
[
2 N, w# L/ ^* R% cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): U! Z3 L6 ]5 q2 e/ {* h$ M
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ {$ K7 E; l$ O" r2 O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' v0 L! g) Q% S% X]8 Y" w  N% S) B' G- \* j1 C: s
]+ W; j1 T9 `7 p$ n# ]
set global-proportion note
' ^- B. E$ ?$ w, C2 a], `9 D6 @8 d& l- Y7 ~! R- I
end* H6 h, l) w- d

6 t2 v. p  N" ^: Y# Q3 wto do-trade4 T+ j3 b$ T0 R" w( ]
;;
这个过程实际上是给双方作出评价的过程# b* E8 H" C: @# m8 P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  D1 u2 G/ V. I1 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- S2 t1 a# `# w  n" Iset trade-record-current lput(timer) trade-record-current0 G$ f8 F. @! @8 I
;;
评价时间5 C6 x0 ^% C+ A8 C- y# Z$ ]
ask myself [
: U: r! j2 o* A% Iupdate-local-reputation
( d" i2 @) q7 fset trade-record-current lput([local-reputation] of myself) trade-record-current
) C  |2 {$ u$ a% U/ u]
% B/ d( D/ E1 ?& W4 y) Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 m( m  P& t8 h2 I* ];;
将此次交易的记录加入到trade-record-one
4 M  L3 H0 u" d+ Lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 O) e4 Z$ V% q9 M6 h4 [: v+ nlet note (item 2 trade-record-current )- b+ D! L8 L9 j7 p- W: o
set trade-record-current
/ g' n2 R' [7 `  {(replace-item 2 trade-record-current (item 3 trade-record-current))
+ q/ t) f1 K( Z9 A3 ~
set trade-record-current/ X+ E- N- a1 m( J5 J
(replace-item 3 trade-record-current note)
1 s; b' f/ b% J2 o* G0 q0 C
& \) G  j3 }7 p1 A
6 C- E7 m% ~6 k- {$ B( [8 X/ i
ask customer [
5 d- p% L' s! q1 R) a  t7 tupdate-local-reputation
5 O# p8 d4 k( n$ a9 P% u' Pset trade-record-current
1 d) }  p5 H9 U* p1 J+ L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ E1 e$ l2 @6 M' H$ |  v
]
6 O; K6 C$ i: C( R! k; T, b
" D+ t4 p  @/ {: O+ m, M

6 z' j$ y% k5 L$ A# rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ w0 c  D: l. }2 [- S9 L8 Q1 g
- c1 [8 t9 F- s# B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 O# Y. Q2 m" a7 I3 J+ z5 s1 \0 O
;;
将此次交易的记录加入到customertrade-record-all9 I( x! v6 o: d5 }. L
end
! J" B8 y  G& e
; i6 I+ F/ k$ m+ r8 K+ d/ ?  W( Mto update-local-reputation# }& U9 u5 {, X8 O% {) q
set [trade-record-one-len] of myself length [trade-record-one] of myself
2 c' b" S/ E$ x, u! t( ?+ ]- B# Y, e# z4 r# j/ e6 c+ x
" m4 E% Q2 i; E  a
;;if [trade-record-one-len] of myself > 3
* x1 z7 q6 S* c3 k1 F1 {
update-neighbor-total' y, {/ ?  ]/ p2 t5 b
;;
更新邻居节点的数目,在此进行; @% R8 M, W% C- G8 i4 D
let i 34 ^) U' h4 R+ m& P6 g' `  j+ V' C! Z
let sum-time 0" a8 e& J: B' y, P8 k1 Z  g
while[i < [trade-record-one-len] of myself]# i7 ?  C! Y/ J" h: `% i2 n
[
0 }& b+ A$ O' F, M; Q/ [+ e) F5 Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! r( h9 S) \3 p" zset i
9 E( \& e9 r1 `( i + 1)
- X. \$ l  c- h  B/ O
]3 y) j7 [5 M. }# g8 T, l& Z
let j 37 h3 m2 J4 {% A. w0 C
let sum-money 0' N+ o, F- }/ l' e" U. F
while[j < [trade-record-one-len] of myself]6 c& {+ _! o4 {. ~+ w' |6 Q* t
[
/ E$ q5 f: ~, Y" o9 Dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% c5 B- x. V, o( h) p" I  e
set j
  k9 C- ]* m7 Y6 l0 G' S( j + 1)

8 M- u+ r9 K/ k( e2 C, B]
% m  Q3 i; h: p& Nlet k 3$ g' V& g% ~' l/ _( g
let power 02 V6 f6 s6 x7 C. C6 W
let local 0! @' i" m) u6 y# y4 j+ n' D: z
while [k <[trade-record-one-len] of myself]2 v4 ^+ L: A( X* z0 A) D
[. J- L4 b& |! `) Z
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)
2 B' T' G: t6 f$ @  \7 d9 ?set k (k + 1)6 H0 n: O; L" X4 n* ~& o
]
. I6 {4 ?' i4 O! Qset [local-reputation] of myself (local)' A' t+ O' P. S& N6 f! {
end$ j2 b$ b, H* M
5 ]6 J" `" T/ ?9 u' I8 Q7 z
to update-neighbor-total
# o3 I" j3 S. g1 F* }* |" @) x! U- f5 C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; L( Z1 U8 f8 {6 {
3 K4 L" }7 E: \& X

" k, l% u" C+ L& N2 `# K* B! {end
% v: A1 a) F# J2 m! A) Q" _9 T5 @0 v) ^" Y" H! J
to update-credibility-ijl 1 T1 `+ l& l+ A: n; s& X

4 O* ]2 t# j- k0 j" n( V2 E;;
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。5 s7 q9 i! U5 J+ P
let l 0/ a- v% X9 U- E) j5 U# S* G; q9 a
while[ l < people ]/ E' F% E& H; x
;;
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 {3 ?+ y' B4 q1 u  `[, K  b: H4 u) o8 @  Y+ D) Z8 g% X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) s  c+ V( ]1 f: B: c6 b/ Z
if (trade-record-one-j-l-len > 3)
5 D6 {' N1 `/ d+ g  H[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
( g9 E5 n& [8 e1 @  s; ]let i 3+ X8 L+ R2 R# J
let sum-time 0
, ^8 c+ j$ N& d3 }; |4 Awhile[i < trade-record-one-len]5 E6 [; {0 y7 Q$ i  y8 n
[& W0 M: E2 X0 Y2 W9 Y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- D" j2 `, K/ ~/ @6 L  S  cset i# E7 E) x$ T' M3 u" t  B
( i + 1)

9 z$ v; D& N) o. S3 L( I]8 L- f! m1 f8 V8 x/ U' z: {/ s$ g7 g
let credibility-i-j-l 0! m  J. d! Q) v( t, G
;;i
评价(jjl的评价)
0 `2 b8 E3 G0 Ylet j 3
- s- t( `+ H( x  y" mlet k 4
: W2 C" {4 d  h. t4 Z% f. Cwhile[j < trade-record-one-len]
8 g3 k( T( [4 p& o[
2 E0 k9 \0 {$ ?/ C% g4 swhile [((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0 V$ k* e, I6 S4 b3 O" b& j
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)
5 u4 |4 q& G/ `. Fset j
. K- r* Y8 B$ k$ i& W( j + 1)

  u2 z2 _, C7 M: L]
, r' d- S* ?( M/ S# H; [/ t9 Q; sset [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 ))
4 p' G" A+ U: k8 \
! O" G& X, Q# C

, q8 y5 X! k  E$ W+ o" elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% J3 m' U1 c: U. S
;;
及时更新il的评价质量的评价
! g  m3 D( q* a& r+ f% ~* v# Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" f% U& o0 |' M
set l (l + 1); k: b9 z* G. ~( _
]
* I, t! ~$ ~  q# e0 z3 ], q" Mend
0 U+ G' i0 o; B
9 j) {2 t; d2 L. M9 r$ Qto update-credibility-list1 n, y! }& |7 E' T+ U- [% e, X
let i 0
8 d% C* P' `* h$ C7 k  g# |. Iwhile[i < people]( B) i  a& k9 t, F7 S6 P/ R! b
[! Y1 h9 |5 G' l5 e. B
let j 0
5 U0 f" g; B1 }0 \; Alet note 0" p& t, a, }- A& u! V4 i5 u
let k 0
& F4 ^; @) l4 B1 W;;
计作出过评价的邻居节点的数目3 v! v# {! S6 K# F; `& N2 ~
while[j < people]
0 O# O  \- V5 j# ]& S[
" `- t$ L3 c5 Qif (item j( [credibility] of turtle (i + 1)) != -1)
# i1 n( W* a- h9 E0 K" D;;
判断是否给本turtle的评价质量做出过评价的节点
2 r& U8 y7 G$ F+ \0 [[set note (note + item j ([credibility]of turtle (i + 1)))) S1 e6 ]& A4 [: P5 T1 ?  u5 ~
;;*(exp (-(people - 2)))/(people - 2))]

- [% A6 U) V* ~* ~! _, B% q" oset k (k + 1)$ f2 Q! Z# F. |$ w2 S9 y( J! r& r$ N  c
]
! e3 y& {* G7 T) Z! Q- y% W4 f# Iset j (j + 1)
' j5 c. q9 y; H4 Y3 e5 s+ y$ Q2 Q]
6 }- F5 ]& a) c' ?* ^, o' Lset note (note *(exp (- (1 / k)))/ k)) h% d1 o, ^: q
set credibility-list (replace-item i credibility-list note)0 ]( \/ h1 N, a5 |) r, y
set i (i + 1)
4 ^% f. L( b1 F- h6 O( `6 Q]
. g7 r! D  H5 [! Z' @+ h& d8 @end
9 D6 p3 w# P) p
3 N& H% G! ^5 bto update-global-reputation-list* Q6 C" |9 m; J5 }4 i$ L1 K" ~3 Z
let j 0
* J; h3 o3 F' }$ r$ Kwhile[j < people]
) C, t9 R5 v; A  d$ C/ r; D9 N: j[
# f4 _: x2 U' i# V: k! Elet new 0
* j6 V, x6 n* K. w: A( |;;
暂存新的一个全局声誉) q1 m/ L/ f+ Q+ \
let i 0
: C" ~1 Y- ^# e- |" V7 {let sum-money 0
/ S( o) ^5 e3 {let credibility-money 05 G# m4 j; m- D( {" P7 E
while [i < people]
+ I/ t% X* \+ X[
4 q' \# S: K% Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ F4 a. N' P/ q" m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ v" E% ?, Y; T* _2 Q
set i (i + 1)2 F. E/ j# @) w
]
) v+ f8 A" \6 x% x1 Q4 \+ a9 `& alet k 0, H- u3 \. n+ J, }
let new1 0
9 ~3 l7 N. ?* A/ S8 Zwhile [k < people]* ~" O. P( L/ v* s% V
[' q% o3 C( Z+ F, T7 q
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)
% I4 M/ P8 A1 {, l) t  y# Eset k (k + 1); }* H% b# w( E$ T4 t% A2 o
]2 I- \0 I! m  C6 _4 L( u, U3 \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 ~: y' ?# m, [) h" Z  c
set global-reputation-list (replace-item j global-reputation-list new)
- D" f  s1 R$ ?" j- Vset j (j + 1)& f- E/ ^* I6 R+ Y8 D
]
( T  [# k. ~/ ~( F3 g: M) w. Cend
8 [+ R/ [/ [4 ?' e+ H
4 N( t0 K6 p7 J' s
2 P2 x" v5 r0 n. @3 g4 n2 N2 N5 I5 h* E$ C/ ^9 ?( S. N" n
to get-color3 d1 N. t0 \- F1 J4 _
1 K( [1 I. F' x! E* \+ i2 n
set color blue
1 [5 m, j! o/ G" u
end  k6 I' ~. ^8 ]8 {- u, b: Z$ D
' h) @, k+ _' h7 h8 \- \
to poll-class; K1 g3 p: ?' u; I: w8 c
end6 v  j9 i; a' `
  m( n& b% o; E! \. l' d
to setup-plot1
6 x- W( d) I$ u# x5 B- ?& L) S' Y" n5 D; u- H% |
set-current-plot "Trends-of-Local-reputation"
* s4 c' ]% g5 e6 {, r0 O" |$ K+ l
* \0 n1 n* f7 }$ u
set-plot-x-range 0 xmax

- k! u% T, H3 b* `" d4 t! o/ c7 {
. g+ c9 ?! a5 Aset-plot-y-range 0.0 ymax

7 m8 L  T  v' |$ a) \. W  T( Hend
& y0 A! n; r, P
  _5 c3 J6 W6 w$ vto setup-plot2
9 G5 {, Q' U: b& E
3 I! K+ X; `7 w  n5 d6 c: H& Q* Tset-current-plot "Trends-of-global-reputation"
+ {7 q( y0 S. X3 C- p

9 m4 y( m  r9 U. x9 ^; E7 eset-plot-x-range 0 xmax

0 h5 Q1 x2 Q& q$ G* y
" {! ^- p* G6 O2 dset-plot-y-range 0.0 ymax
1 k' ?: m9 _, p+ K4 C' R
end$ |- G2 n5 i0 j3 e, l0 X" r
0 ?" ]! B% c4 m" j9 }6 O3 w( j3 h
to setup-plot3; D# |* E5 q! {$ m7 ]. I  \7 G# U

. S2 e. [1 E0 L' J  h4 @( Uset-current-plot "Trends-of-credibility"
3 j9 k/ C) |4 m
1 E/ [% t7 S# b- S. g, y0 e
set-plot-x-range 0 xmax

5 B$ n: ^; k3 X! z
$ ]6 r! f: B, \4 h2 K: rset-plot-y-range 0.0 ymax
! d0 |6 z0 a* _1 C1 O2 C
end9 ^* E3 g3 Z( q9 g- J* Y1 N

0 c  h; _7 d4 n: O$ Yto do-plots
7 Y1 W$ e& E7 D% u$ D  N7 A9 Eset-current-plot "Trends-of-Local-reputation"5 _- y( R, d9 @! D/ y1 _/ ~# D
set-current-plot-pen "Honest service"
+ d7 h+ F7 Q) R% Nend. j7 l0 T: T- `( k) O( v

/ r0 R" m/ |+ R0 H[ 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.
" J0 ?8 d/ g+ K- K
4 g0 b! U. T# _: k0 V9 {' K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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