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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:5 C( q7 O3 h' ~$ F+ N' x
to do-business
4 g/ l4 \) W+ P rt random 360
. P5 ]3 X/ g: l1 z. e% V fd 1
+ _1 e! a/ t4 T( \0 B8 E8 U ifelse(other turtles-here != nobody)[' F% S  G# p0 H, e8 J# W8 j
   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.
  t& {+ o% R- F$ {6 b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 a' O, p+ K% u, s! u1 \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% [! T4 E% H" I& d6 y9 f7 |
   set [trade-record-one-len] of self length [trade-record-one] of self
6 i7 d+ }6 z5 C1 ?; D   set trade-record-current( list (timer) (random money-upper-limit))
2 f$ W, h, x8 x* M( z
  @4 a/ q4 G" ~- s* e问题的提示如下:9 E5 J" E) A" |- U( S

4 M7 v7 _: H# g! j& u! j4 h/ y% kerror while turtle 50 running OF in procedure DO-BUSINESS
( f! |: ^0 u3 k5 V& Y/ f  called by procedure GO9 l( m) [# Z% k4 z& x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 K  i5 _5 \$ ?7 s1 P6 O& L
(halted running of go)
$ g3 _2 y# Q8 {0 Y9 ^9 d4 v# ]' U8 O' G
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~~: _8 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2 T7 X* E- c- L. W
globals[
4 N. L( f: j3 N3 A* l) Jxmax
* B+ R2 P% J" ^  U8 m9 ^ymax9 @. u- H4 ^' `" C! C9 t5 i
global-reputation-list
. |# t! |$ n+ W: `" @; B5 D$ z
$ i! w& B! D0 |7 ~5 Q;;
每一个turtle的全局声誉都存在此LIST
& ]4 o9 \2 D7 ucredibility-list
' E" E- l; a8 E4 [) O5 H;;
每一个turtle的评价可信度( B1 {6 x% U# l7 b, y
honest-service& _/ }8 D( G8 e2 H$ L) {& g
unhonest-service, N% K! y) g4 ]. w9 S' m" A( z- ~. x
oscillation: g! f" ?, x' y3 f: D) `1 @
rand-dynamic
5 [; |6 W$ y+ {* G( n; T. G% K) }]* Q/ ?8 K/ F5 l- D* M
5 \( ~# P0 ~7 k& Y7 T1 S% V# }
turtles-own[/ k+ E+ {7 N6 ^% R7 n* d
trade-record-all
; y8 E) l0 P8 Q( J;;a list of lists,
trade-record-one组成' t* J* H7 \# V% f4 \8 {% w
trade-record-one3 H  E% w! W  R  i# ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& U/ B; \9 ]1 \# W5 X2 q! J9 D) D
$ d3 P0 [# o+ C2 O& h* d;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
4 U. G; b' E$ r% G; Y% ?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]2 r$ O2 s" X; {+ ^2 F7 ?% b
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list7 e, M% V5 W5 ]! s2 l
neighbor-total4 o* s7 W  T3 W$ ^8 w9 Q( N  g9 ?
;;
记录该turtle的邻居节点的数目
- ~) N4 l6 |/ u2 x8 Z2 x6 ctrade-time
# I' N0 f& L8 Q2 ~# E" t  U;;
当前发生交易的turtle的交易时间! q9 e! P1 G& R3 I# ?
appraise-give
5 ?* j6 u' h3 B0 V$ L;;
当前发生交易时给出的评价
; X" O% s/ S* M8 P5 [appraise-receive# p% _7 [( d6 o4 d* C9 e
;;
当前发生交易时收到的评价$ j# z1 D: x" K2 H: C2 Z) y
appraise-time
$ g% J# U' B$ {1 {7 o;;
当前发生交易时的评价时间
3 k* Q. G9 z" d6 z% I+ G  i. Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 M. K. U/ U2 E1 \% |5 C! ], P; Ytrade-times-total
1 ?  p) M& [$ O: c) d% h, |1 }- H;;
与当前turtle的交易总次数
  k3 Y4 o; }/ q) Etrade-money-total9 g# G6 g: V$ ~# O3 ^
;;
与当前turtle的交易总金额
8 N) o% \5 [4 k- k/ }: H6 u# Olocal-reputation$ h" Y3 L3 h7 w( Y% O4 z
global-reputation$ N8 ~$ ?' }" Z9 W' H, Z
credibility
  g% p8 C0 v$ _* Y' t4 h;;
评价可信度,每次交易后都需要更新9 Y# L# l1 d: F  k
credibility-all
0 l( e  y! {7 t) };;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/ W: {4 a0 G3 {4 C5 r
  e& X8 V+ ?0 C( w, K1 U- n! q. _, X5 a
;;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! B+ K( m2 A% A4 J. S1 \2 O1 ycredibility-one
1 g6 b9 X! g: t& m;;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
6 E/ E! S1 s" A0 Eglobal-proportion0 O0 R) `* v7 A# w( m
customer
( {' T/ k7 T; J  l( g1 b$ b5 pcustomer-no
+ w# Z% n# u  ~& J( b; ^trust-ok+ \8 k: @) y5 I0 V
trade-record-one-len;;trade-record-one的长度; N) x8 a) x! T* F+ O+ n
]
, \! z" V9 W0 _2 L. A3 C3 L) c5 ?
;;setup procedure; ?; _' P; H. a# n  A3 p/ W! Y

0 I, e+ j" U% |/ ~6 uto setup0 q8 h9 `4 Q$ [( k

5 |% C0 G8 h+ {$ M/ oca
5 j7 X( Y# i+ j8 ?

/ Z* h! u0 e5 w8 F$ y( J' O: kinitialize-settings

$ k' u" K: A- Z5 r/ N4 K9 D$ K; y+ s9 \1 G; g
crt people [setup-turtles]

: P* Y$ G' j$ O: P; q
* c4 m) l8 ~8 V4 C3 C4 Greset-timer
( z: @; u1 t0 G; m' n7 u- O
" R* q9 p' o! H: K" G, w" B
poll-class
! j; h  h4 D5 D: a$ J

! X8 d- w4 Z* n& osetup-plots

  a9 C4 A# {$ X; v  ^9 n+ M" c+ Y6 @
do-plots

4 H5 h1 C. x0 [6 p  D9 D4 }end
" ]5 ^1 m/ T/ m% n4 o4 Y- D' ?+ K0 N' L5 [  j" m5 ^6 c
to initialize-settings
/ u% x% U5 {7 s8 d; h
% f: y8 S+ c) o6 X' G" ]: yset global-reputation-list []

9 a- m) c8 b! A
7 |7 ]2 c" p9 r: d8 nset credibility-list n-values people [0.5]
! ~7 F5 g. Z$ X7 @+ U4 i

! F# X7 s8 n. S9 ?5 x# kset honest-service 0

8 J8 Y. R( B4 ~* i; s& ]9 V+ s# @" T1 t& v+ o7 L& N
set unhonest-service 0
( h1 N4 i; m2 Z; g

  q) E3 z5 O9 r2 J) p' \set oscillation 0
, I8 i1 M* \# f1 @" |# j4 e

4 c' i  g) u1 y+ l0 l2 f4 A! |set rand-dynamic 0

0 \8 y# {8 N) J: g6 l9 o4 j; c$ j9 dend9 H5 `; k9 i2 Z, ~: g: W- i

0 M8 [# Y$ O( z7 v" Qto setup-turtles ; a; y  A0 |+ W. P# s
set shape "person"8 }7 T  j+ l! t2 C! f5 b  _) p
setxy random-xcor random-ycor
0 ]# b0 R: R; ^0 J" \6 B. Uset trade-record-one [], L1 ]+ ~( V) b3 I
# |4 r3 Q* \" P' _6 T/ ~& \
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 Q% m: A+ t1 {/ U7 I3 k$ P
% N8 U# j! ]* U5 u
set trade-record-current []
# \* f& x9 U* w* r- }7 Xset credibility-receive []
# W: S2 \0 \* yset local-reputation 0.5
9 N% d% T7 E: ]( S- @$ aset neighbor-total 02 H8 j% _6 y8 A9 x/ `) c9 W, Y6 ?
set trade-times-total 03 Z5 L8 V* Y9 ~9 s8 K0 ~3 K/ `: O
set trade-money-total 0) a3 `. E. |+ l. ]+ y( Y: t
set customer nobody  D: p$ u! Z5 C" }5 [! B
set credibility-all n-values people [creat-credibility]; y9 M$ Z/ Y: h$ n9 M
set credibility n-values people [-1]
7 B+ n, |& S3 O: v) `4 tget-color. F/ w1 t! R3 V3 n6 F( ], r4 O1 i

. }  W1 \* E* s# G8 g, Aend
) n) s* X1 F# l# A& A& f& S' s
* i  r8 J( d6 B/ `' L4 T6 `- F- i/ Dto-report creat-credibility. O4 V& a; v! O2 R; j' a) Z
report n-values people [0.5]
* g1 Z2 R/ x" Z% r/ v! Uend7 r7 c2 L' [) ~6 z2 g# j

# c  k; ^: V4 p: Xto setup-plots
: d+ o2 X( Z! l6 m
% O% N8 ?: g+ a' V$ F0 t# O. xset xmax 30
2 E1 }: \3 b" }8 W. {
& f- S- {3 b5 f
set ymax 1.0

6 [( q0 T: \/ c. E; l' d# A# S5 ^" u, L9 D
clear-all-plots

* I" {6 @$ e. ~
' Y9 Y# U: c/ _! [  M# _setup-plot1

* z- n7 ~# s8 _; T, x$ W0 y
: m/ K' }" K) H, \0 f  asetup-plot2

& J( H' \% q: Z: Z6 i1 z2 G$ Y) v" Z% ?" h! G
setup-plot3
9 f: B2 ?% o( }& Y, W" _5 {9 j- \
end
1 h) V" y8 ^% M  K$ t7 R2 g. @5 {0 m5 {' A# l1 i
;;run time procedures6 |, k: x* I- d, B

, D: ]5 s3 O3 A6 X4 \7 jto go7 @4 V1 k+ c8 Q+ V& {. }2 i

: E! \% P0 g$ P) s( Zask turtles [do-business]
5 Y; B2 e% A. p9 C: m2 T4 [
end6 T' `: R# p  B' m' P: a* w

" ]7 P: N- i% z" {: {/ Oto do-business - ~# n5 I* k7 L: M) Y/ _) W
7 ]& l7 I4 l" \  j- d

- H. _! W+ I) v6 I  nrt random 360

% }0 h& ?0 F" Y
" [+ X+ ^9 ]# }0 Z! S( Xfd 1
2 S% _' [6 b& V

+ V& I. E# P* e  w6 Rifelse(other turtles-here != nobody)[

3 p' ^6 f1 o0 j) D. n" g" t4 c( J) ?& {) m5 J" p' u1 H
set customer one-of other turtles-here
" Z7 t+ h  Q# L) p/ ]1 F

$ W  H9 _7 S1 }( l. m;; set [customer] of customer myself
8 g* ~9 [1 _9 S7 X" r0 u- I) J

3 i' j/ Z6 N8 J3 O: s+ z$ c# nset [trade-record-one] of self item (([who] of customer) - 1)/ {# |6 [5 }- w6 l) q
[trade-record-all]of self& a- C$ h& P, _6 o6 M/ B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% ?) b8 @. x1 M; C) k6 |5 g  u5 M* k' C' G0 `
set [trade-record-one] of customer item (([who] of self) - 1)3 C! K: c% z% G5 e
[trade-record-all]of customer
! C; q# z5 t9 C" Y1 c& O

6 ?! w. a3 u8 h0 k' U$ |7 qset [trade-record-one-len] of self length [trade-record-one] of self

' m/ I2 @$ Y3 e4 O: s5 J+ L) U2 g! i. L/ u
set trade-record-current( list (timer) (random money-upper-limit))
* F( h( J1 f2 s) M, [9 f# E: k
) Y0 F, E$ H7 u  A% }
ask self [do-trust]
$ l; X( w: i) q- Y$ Z2 V" S;;
先求ij的信任度
- B4 Z$ B' n( d$ i) c# t7 u# \& `
+ i- E7 _2 I4 r: b9 Cif ([trust-ok] of self)  J' ~/ ^: Q2 K- r) Y
;;
根据ij的信任度来决定是否与j进行交易[0 g' y5 J6 c3 T" f/ _4 y3 O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- n$ Y" X6 n( ^) {* B7 i! T0 _

# K( S# X( k% |$ Y[

# x% y* L8 f2 t% R* ]: Y) H8 j: R  j/ e7 A( e2 Q9 X
do-trade
, [4 b7 {: U! L" u7 g0 t
; B- h" O' e! J$ o+ x
update-credibility-ijl
: V" V4 O: `' J+ A% f( V1 i

+ j0 x" d, ?2 Y* l& f6 W& Wupdate-credibility-list
$ u/ M; ]$ g" ?( d) }5 `, I/ J
# n/ ~: q9 C; i' b* Y5 ~0 ~! K0 Y

+ S+ l$ N0 m0 N; B+ g' U; j' c: }: lupdate-global-reputation-list
4 F# [# R5 M! b( p, H1 Q0 k
. D: o+ E  ~' P8 E+ D2 u7 |
poll-class
" H. @. O& o) W6 b
' E3 ]  r" k( [) b
get-color

. I, [4 s) t1 q. d) K
! A7 D2 R, R1 H]]
: R7 |% x9 r/ a- N' T- y" n% l. P2 |8 h4 Y
;;
如果所得的信任度满足条件,则进行交易0 i! @; N5 P: k# ?
1 C! S0 o$ W/ D
[
7 ?: x) |, i' b: ^6 ~! p, h1 T
! u4 R' v1 I* Y: V: |# [3 g
rt random 360

3 W0 |, r. _; T) j6 i, N- @3 N' Y' b+ C6 n2 ?- A) Q& V7 R
fd 1

3 Q4 u0 k  B" z% m( A, D% t2 x8 s3 B. A
]
5 D. s$ K" ]4 a. q* J1 c

8 A5 ?$ K- [: l- Vend

3 J2 S& O: {5 p" u0 n
$ }2 y( K# H. Bto do-trust
2 v6 d6 H  I+ [% hset trust-ok False
; U. g3 h' r6 ]4 L. N: p2 E0 \5 Q

; m6 k: s% N& E. A+ G: {. wlet max-trade-times 0' D9 k) \$ y) M0 @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ m* \$ [" y  W9 O! P* N/ ]let max-trade-money 00 e% P6 E/ e' v$ c" y6 e6 k. n" x
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: \* x; i: ~2 ~6 P- r$ P) C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 ~) [. r" Q- n
) p5 S. e! q/ W+ ^
1 `: f6 H+ T6 C5 P, S, O
get-global-proportion- ^5 X9 @1 j8 D9 j
let trust-value
  V8 P  H9 J; ?" x" }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)

: O6 ]1 s5 I3 yif(trust-value > trade-trust-value)0 n5 N8 V8 u6 b2 Y+ @6 y
[set trust-ok true]: I; l) j3 }( g+ `" Y8 C
end
$ P  W  [! Q; u2 J* J) e0 a; E/ b' l5 s
to get-global-proportion
* b1 c. _& F" W1 U1 _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 P8 e+ q& d" ]8 e/ w[set global-proportion 0]$ Q7 B# b6 v1 i$ w: _) E0 ]  \
[let i 0" K+ L! K& X; _9 H
let sum-money 03 M! e1 T; j; I$ g: s7 @
while[ i < people]0 I# w# l4 j* m# V7 t; p% v
[
8 Y5 C" u4 |5 [0 S' Hif( length (item i
( A) f1 S$ x7 t5 d: a9 L% X[trade-record-all] of customer) > 3 )
% S8 [+ ]- M4 D0 P: J' u4 n. a3 j
[
) Q. W* D9 P7 j/ l" @: Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 R; `  \" W$ q
]" ]( V2 e, B; f* \7 ]! a
]: A% U; y- e/ W  d: j5 c9 i
let j 0
( z( `) j/ Z* Q0 g4 |let note 0
. }7 j7 a( Q0 m6 K9 Y1 ^$ Y3 y5 D, }while[ j < people]* \$ \' \' \: G! l& D0 R0 m8 w/ W
[9 D. t; W8 c  n& j
if( length (item i) j7 {! E0 _* {6 Y: \$ ]+ M
[trade-record-all] of customer) > 3 )
" x* j8 h+ x7 x$ r$ Q( W6 h8 w6 {
[
  Y1 @1 q" b" s9 D1 Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) |3 r9 i# @$ K[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 o  ~5 a! H2 C5 z+ V+ {- g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 Y  [4 s' h8 p# y; L( @8 C
]
/ A3 F' ]; P4 M( a% F/ o]. `- y! k- ?% x/ R
set global-proportion note$ n" p5 C, L  X
]
& J2 J3 T2 Q: _0 G. s( send
$ ^% ?  m/ K# ~  p; |; ~5 ?3 X7 t- `
to do-trade
7 m* F7 b2 ~+ n+ S;;
这个过程实际上是给双方作出评价的过程( S6 n' f- \" R' r! \# V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 \( H4 H$ _1 f0 ^. T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( [  s' Z& E; }3 z1 ~set trade-record-current lput(timer) trade-record-current4 v. B- ^' P' _0 l
;;
评价时间
( ]) ~  l6 Y2 X! z) \9 Q: eask myself [/ @/ f! ]* P5 Z
update-local-reputation
+ J1 V) ]* p0 ~2 L8 a1 Aset trade-record-current lput([local-reputation] of myself) trade-record-current6 h6 f7 O5 g6 d. k4 k) T* L, B
]2 Q1 }9 ~+ p4 G0 u) Z1 S) |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, I9 Y2 U& }# ]1 H' W/ T9 A
;;
将此次交易的记录加入到trade-record-one
: ~4 j, y9 I) a! rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' q/ X0 Z0 ]- A1 Mlet note (item 2 trade-record-current )
% d% x" b: M# I  i( N, pset trade-record-current" O8 {* A# K" k) J, G5 h
(replace-item 2 trade-record-current (item 3 trade-record-current))

, ~$ M2 _  b! m, }4 E7 Aset trade-record-current
: J0 w. ]. o1 k(replace-item 3 trade-record-current note)
& T8 a* t& |# ~9 q, ]+ R
1 U. X; l( o3 E# C6 P  k
/ N: H1 V( p! N% K$ _6 ], {
ask customer [1 l/ K/ v3 o7 ]& `0 R* c0 {
update-local-reputation
4 x* m& g3 s# z7 v' Wset trade-record-current
3 h. K; O! Y# s, c. C2 a(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 J* e: A' U. s6 b$ M7 W/ t9 o6 [
]
! C) N9 K/ P' _
$ J1 o1 g1 u# ~( e+ n6 G
  I' E# c$ @; m$ F6 q% |9 i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 I& ~8 m0 j" Q- j4 u( }
9 m7 U& u, R! T6 I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  z* S! l# m8 G6 ]3 P
;;
将此次交易的记录加入到customertrade-record-all
& \: u6 A7 h: w8 W* zend
8 b: k: e% m- c. s& _3 f' Y" M1 I' l5 p4 t5 T
to update-local-reputation1 b' I: X. l8 E( W( Q  p: ^
set [trade-record-one-len] of myself length [trade-record-one] of myself2 H4 E" i3 A7 u3 T* e- m5 E# u% n

$ S0 U+ ^* ~9 o, t' a. X
) H$ o8 J$ s8 T3 |! q- r: k;;if [trade-record-one-len] of myself > 3
3 c/ n$ B4 S, r
update-neighbor-total) u$ R$ X: z8 ^( N! U
;;
更新邻居节点的数目,在此进行& h+ f. k7 v9 i+ d
let i 3
8 [7 P* x$ y2 l  ~  N- V5 d: ?9 ?let sum-time 07 {0 g/ i1 Z$ R# u* z0 m0 C
while[i < [trade-record-one-len] of myself]/ g3 H4 V& u# |  @- Y3 ?. I
[3 O! }4 [# J9 E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 y6 s8 v" ?, ^! ?
set i
- @' g2 j& s! E# t2 Q! @5 J( i + 1)
2 H' R7 F: l: _% e: p6 X
]
! D5 E( F1 ?) ?% B# n. I- Nlet j 3
, `; Q7 K2 W, \  i+ [) p" _& k0 ]+ Llet sum-money 0! w; G4 C' M' j* g; X
while[j < [trade-record-one-len] of myself]
2 ^6 t7 b2 F0 [0 z[
/ Y% {# f/ |0 V! w' N: Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
  z2 P5 H# }6 A/ R0 }4 xset j
% K+ ?( B2 B' `+ R( j + 1)

& U/ u( z  z1 o  ^]
: ~) Z* `1 R+ Y6 V5 g: vlet k 3! O3 J0 E9 h; C( O; D: I
let power 0) j* O( ^" x( m0 b4 z' e
let local 0
% @) u" g+ R% d1 k$ B  v: Rwhile [k <[trade-record-one-len] of myself]7 g& H) I- o0 S! ]/ f) y
[
5 |# K5 i8 v) j# b7 |, 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)
/ ?5 k, O" K5 }1 T4 i5 ?1 o2 ~. Tset k (k + 1)7 J$ G# A7 n, W
]
) L" e% Y$ M& s7 V% wset [local-reputation] of myself (local): f! E. b! `9 ^
end
1 j& u7 ^* s6 n% T! f/ Z
( u' J/ H( B; e! J+ f1 zto update-neighbor-total/ ?0 M/ n( J( [

1 X" ~1 M, O* ~5 Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" Y7 w3 v% S5 b$ {) f0 g5 g' u
$ l4 N. H; j5 }1 o$ F

1 d* N6 G% v) R: ~; Z0 Jend
  `- b! F4 j) z; P
9 N+ L, W% \" c$ k, z/ wto update-credibility-ijl
/ \5 z# ?+ S  e& S
( T6 ~$ a( x% l: {* D;;
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 f( y$ h1 R! C
let l 0
& w  g+ Q. N/ C/ B( Twhile[ l < people ]& ^/ w7 ?/ O1 h3 m6 A3 w9 r$ J
;;
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
( O" B! j* R. s7 p$ [[- G) R+ s, k  ~& X8 \, r' C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  s0 P# i6 n7 W; t* y" Cif (trade-record-one-j-l-len > 3)3 \7 w8 R& N; D+ O
[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+ ~1 b: p3 B) `* G
let i 3
" k0 K$ D4 n' ?4 P0 }6 Zlet sum-time 0& @) @9 j) b+ j5 ?. `( X$ w
while[i < trade-record-one-len]
$ C( ^5 k. B" ~: ]% p[
9 K0 i( E3 u3 y5 u4 X, ^4 B5 p& [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 j! E6 n6 X' ]# ~! i4 S  a% Lset i
+ l) U' R2 a% f! N7 d' v- w( i + 1)
4 b2 Q$ {, L% M% N9 k- E
]* m1 ^* |2 q! o" h  I6 t
let credibility-i-j-l 0
: a: r* X1 q$ g' |;;i
评价(jjl的评价)
" l* t6 [+ o) j3 Qlet j 3
4 J$ \- o# k1 S- `: l) Y+ P) ^1 Xlet k 4
. J# _7 t$ B. G; B4 V  wwhile[j < trade-record-one-len]
# r; X8 W0 w6 ?; p, O[* L# x& y+ E& r
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6 O8 d, M4 E  ]; f, z& x! X
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)
) @3 j, |" M6 Zset j: I- i5 i( K% _  c: \- k% M
( j + 1)
( }9 O- h5 F4 l/ {
]# y9 W5 l! a% R: G' ~
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 ))
3 g0 z0 i! X' E0 x* L
* D/ y9 a. l! ]. ?+ }, \7 ]  I
1 r! L8 H3 g5 o3 a0 l# t! c6 D, b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( y# J8 m$ |" P
;;
及时更新il的评价质量的评价* R4 W# Q* c; C' M" ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* D; f" A  h  J! x1 Y
set l (l + 1)$ ^7 X; N) x0 ^! E
]
. W* ]6 m: G; a$ B2 ^end$ c4 s: G5 s, K) M" \; q; G3 o
( f5 I" C6 ?* X3 ~( P5 b0 |: @) P
to update-credibility-list% T, g8 b! L; _% r; H9 Y* f( \; [
let i 0
4 E/ E6 i) D; Mwhile[i < people]9 ?9 i/ x0 M- }' r' w
[
8 k' T# ?* U; |, ?7 z# @/ Llet j 0
7 j6 M# v5 J* {* B, Flet note 0
9 b& B( c! O# |, G& llet k 07 c( D2 M5 K. O
;;
计作出过评价的邻居节点的数目7 c" `& n' w/ U' v0 t4 ]  D
while[j < people]
$ F, \% w5 D. ~( u- m, U[$ S' V5 r0 o, s& q0 H# z
if (item j( [credibility] of turtle (i + 1)) != -1)
& ^3 p2 S/ i5 t. y, G; T) ?;;
判断是否给本turtle的评价质量做出过评价的节点4 @( M3 |5 _2 Y6 T! C9 A2 s
[set note (note + item j ([credibility]of turtle (i + 1)))
2 |" s7 K: q/ Q;;*(exp (-(people - 2)))/(people - 2))]

$ ]$ A1 W/ e( q1 Q4 ?0 C$ s/ wset k (k + 1)
- Y" H+ x  Y% Q; d]  t2 ?2 j' x5 L- x
set j (j + 1)
6 G+ L; q# r4 r' z/ |# a]% u6 t4 B$ X! N! u4 E- f
set note (note *(exp (- (1 / k)))/ k)& V0 C" a, w. E4 X2 v
set credibility-list (replace-item i credibility-list note)+ \) ?1 V* }" j  c
set i (i + 1)
+ T/ Q: h2 K) B* Y  p+ n]
8 e- M; J! b3 x- d& qend
( x% O# a" O; ?1 }& Z) f$ |" P! A5 m# Q5 S3 J5 `2 I
to update-global-reputation-list- a/ R- c' Y$ z  l; g- T: v  z
let j 0+ h) ]8 i3 B9 H: S
while[j < people]/ k2 w+ k/ h& Y& g
[$ j* r) c/ z* H' g0 O6 T* I
let new 06 _4 H' {& G  a& l: V0 ?
;;
暂存新的一个全局声誉
' M( Z- G; J# c5 S/ G+ j% Blet i 0
" j8 R& D: S+ \( `+ n9 xlet sum-money 0
) c  ]- _5 G6 c! g' G2 |$ ylet credibility-money 01 I* d! U/ E; u9 n) p9 m% s) p
while [i < people]
, L, @9 L* r2 M& {2 }) d3 ~  L6 Q[
9 ^( k$ w! p; T3 l6 T; y- c9 v6 Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 y! A. K6 i7 V: f0 k  V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& Q% g" B" u7 b$ B0 x! O
set i (i + 1)
' n9 Y0 a5 t, L]% P* W% s! H; \- p' _& l  T8 j
let k 0
& k9 Y  V3 Q, Z7 E' N' N! Y0 {let new1 0
1 n% {  y; S4 F- i  ^$ E. ]while [k < people]
/ G7 E$ B: ^+ o  F8 G[5 G4 ~6 F0 J# ]: B  x$ v
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)
! v  O! e7 t: \4 _% z: ~set k (k + 1); i% e4 P! ?. s$ N7 T, K. T. `5 K
]
0 H) q# y1 D+ X8 i8 U4 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / E1 D! F% D( w" ]& j
set global-reputation-list (replace-item j global-reputation-list new)6 E3 E/ d- x8 b9 H
set j (j + 1)
! i  y2 G6 [' l. w" {]$ k9 f: V7 q; {$ M" v& o
end6 M/ I. q! D4 D  M

9 _9 a: J% `; w; [7 Q
7 O# i  c+ P+ |. g0 k* c3 V: d) [+ J8 L
to get-color
. A) V% L# Z! ]7 v7 F. u
+ y( w" B  L+ p7 B% ?% c+ X8 x* }set color blue

, C3 L, J3 e1 |4 _6 Vend+ f, y5 [# r9 c" B+ ]3 O- i

9 M/ K3 M3 A/ p% E! Uto poll-class
6 r) x( }# Y! J- q: w+ \end
, A* P/ o- B! w5 K) k* B
, U/ W% D7 s( e+ b; oto setup-plot1
5 _* X7 a$ \' `# `% L% A
  A0 D/ }9 C4 j7 x8 Rset-current-plot "Trends-of-Local-reputation"
! O9 m" A: N0 K
0 D- T9 ]" v5 N* N8 k0 _
set-plot-x-range 0 xmax

- ~" ~7 W$ C( A; P4 L' v. R6 Y  `  y' Y+ ?: ^
set-plot-y-range 0.0 ymax

7 v5 }( W. H! f' N% uend
) @: I/ h# X  g; m' c6 B6 c9 w: a( S7 O" i0 b( R
to setup-plot25 {, {1 s% ]1 H) s% `

, U- R* ^& e* V7 Kset-current-plot "Trends-of-global-reputation"

3 `, \' u; V7 H0 v* y5 m! m$ y& [) I1 S
set-plot-x-range 0 xmax

3 T% m. r3 \0 N3 u" S
6 a0 k2 q  n$ A3 Y" X) S. Oset-plot-y-range 0.0 ymax
/ {& h0 s, ?* S# R
end; j6 A# q8 V6 h1 D; p# h7 C0 H

, c1 @5 q$ m5 q8 b6 `0 Nto setup-plot3
' }9 L0 M5 P& W" r  c( j; Q3 A
% Y4 a* p& t: c$ A# g0 hset-current-plot "Trends-of-credibility"

; X6 ]6 S; Z7 W8 d
* R6 K# ^3 O" Kset-plot-x-range 0 xmax
0 o2 {" P6 F6 l8 L6 }

" H' m9 L% u7 w2 T1 @$ H& V: lset-plot-y-range 0.0 ymax
" w2 ]% i' W: y# n; P
end, i+ E/ T/ Z& ?. k# T8 {% `

! \$ Q* r0 t" T7 Ito do-plots* B1 y: u' \  b4 B, q
set-current-plot "Trends-of-Local-reputation"
3 |( l3 o' v- @- l/ ^4 e. d. i" yset-current-plot-pen "Honest service"
' _3 c7 [# w2 O* e! c" O# D$ @4 A) U9 `end
7 m! }2 i! N7 d8 L
  I1 s0 V; x! G1 g: c0 P[ 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.
; H8 s8 T( V7 @+ O
/ i/ p2 H, D7 |1 x3 J' c0 ^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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