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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:
. L( w. ~7 K: D0 g# m2 {% \to do-business
6 i' h- K6 K% G6 i$ N rt random 360
6 i# z( d/ p5 O% h4 l7 Z5 R fd 1
" e- {: \* |$ [9 W ifelse(other turtles-here != nobody)[
5 M5 R% I/ H- w: r0 F1 H0 K   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.9 D0 w% n% [/ [5 z3 Y. ^  b3 O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- x4 z5 @% h# N' p/ g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 w' c% f& p' a! e   set [trade-record-one-len] of self length [trade-record-one] of self+ A) Q: s. X3 K" c  `( x: @( j; R; g
   set trade-record-current( list (timer) (random money-upper-limit))
4 i" ]# y) f. J! K7 g4 ^4 b3 A4 `! j% B/ r' v
问题的提示如下:7 z+ ^$ d& r2 O4 }2 t- U, u5 ?

  B, U  M0 F* i4 S- ?, Uerror while turtle 50 running OF in procedure DO-BUSINESS
0 ~  ~. M9 `% V- g& j* H2 C: K  called by procedure GO
! h2 j  j) U. F4 [% ROF expected input to be a turtle agentset or turtle but got NOBODY instead.
; q4 @  V1 Z# k
(halted running of go)
# N6 P7 E; U! t
8 I) }: B: k* U7 L  o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~~
' n/ k, q/ @8 M; f* i4 O另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
5 R8 C) E; t4 Fglobals[
1 p/ u1 i# Y# S) Pxmax6 [, d! @1 B7 W" C" Q
ymax
" G3 @/ n, a$ l) h* _1 t8 i' }global-reputation-list3 u4 p* s8 d1 H: F" z3 W

+ l  x! S& M4 p;;
每一个turtle的全局声誉都存在此LIST
; F; o$ ?7 w2 \" u3 S! O6 d$ [' Rcredibility-list
! [% t& n+ M) C' X;;
每一个turtle的评价可信度- ~& i  f+ i: |# R
honest-service
5 f0 M$ }0 u: w. t. o) n8 Z9 ^  iunhonest-service1 X( L! I" F0 o( E. L& G+ X
oscillation
) l0 I" T( `2 E0 c! b  i  vrand-dynamic
, ]- |' q' |3 l( D! r]) X! D$ {8 `# b2 K% h
+ ~$ Y) Y3 ^0 A( l% [4 U$ k! o" _- s
turtles-own[( R& g, _. s% j
trade-record-all
; }6 S  \+ i1 q;;a list of lists,
trade-record-one组成0 I. ^' j- V8 F$ C, L& x3 r
trade-record-one* p( Q5 l# M! W( P- ~
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ ?+ z+ C5 n# r3 s" R- D$ D9 g9 K5 T% z9 d0 o9 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]]
' {" K) w, H+ {) ^4 Ftrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉], f$ M( y/ S7 |# v8 D& i2 y
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
! z0 B9 I5 r7 F7 R9 Zneighbor-total6 u! L! k# Y, `; v
;;
记录该turtle的邻居节点的数目
8 Y, g3 O& J$ {3 H. M* o3 w% d+ H1 ktrade-time! B" w5 O* c4 }  [6 c
;;
当前发生交易的turtle的交易时间
8 v* \0 Y% r7 ^4 h7 _% qappraise-give) i1 u, {- j5 Z3 J
;;
当前发生交易时给出的评价, q9 m% T0 U9 y9 i
appraise-receive
3 P  a( o) h6 |# L3 e& ~* ~;;
当前发生交易时收到的评价
* X' z, b3 Q: N1 u7 S& Rappraise-time
# U' O( I; X: K' ^;;
当前发生交易时的评价时间* h9 r* S% A( H4 P- Q: t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 _7 L- \6 }6 ]4 k; G+ m
trade-times-total
  B& O& z  ~9 y8 a;;
与当前turtle的交易总次数5 P$ k; Z2 T" Y( ?$ ?1 B
trade-money-total% Z! B' X6 V; L
;;
与当前turtle的交易总金额- [0 J3 @/ \4 Z. t% r1 Q
local-reputation
/ K. E# ?+ i4 e! X( A% y7 tglobal-reputation
: f; W) A2 g; U' r2 X7 D& M6 Pcredibility
4 n" i* B4 A( {3 K+ f( h; S/ o;;
评价可信度,每次交易后都需要更新
, m5 U8 L  q. l9 \$ ncredibility-all
% G1 z0 @7 K9 u/ G; @$ n- E;;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
! p. N; t9 Y2 D$ ]# E- f
1 A8 |$ J7 {0 U  X0 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: ~; g* X, o# ?2 ?7 w% ~
credibility-one3 P; H" `! R5 \
;;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
& g( H& J! }3 q. Yglobal-proportion
" ?( W9 L& y+ R* r  Hcustomer
% K/ a& @! e% s' `( U. Qcustomer-no
2 y& C' L1 u  @8 Etrust-ok
. h1 b! n4 u& \9 B$ U! `$ D- `: utrade-record-one-len;;trade-record-one的长度$ p! }7 g) w  S* Q, @# W
]! D/ t, _4 i% C. z& w

* |1 L' Q) ~0 o3 w) R# k;;setup procedure3 R9 f) g$ H: b4 f

! b5 b9 Q3 p* R1 [to setup3 C. P- Z, T! D* I" V4 N

$ ?) j& _' h& f; b: hca

4 z! c; e5 |+ b6 N- l( V+ ^% _* E. ?, ~
initialize-settings
% `* b5 y" K, R: [# O2 [, R3 f

1 n7 [' e8 b4 k" ?crt people [setup-turtles]
" M0 K1 q3 V. h: P+ g9 O  i6 i! |! z

8 S0 {" w" Q& @* y2 ^4 S2 {9 [5 [2 }reset-timer
. j; \; \$ [: L/ h2 r

) o6 Z; K# M& p) L; V3 Opoll-class

* ^2 X$ N; {0 g9 f, p3 t; q5 S# Y+ Z) Q) R' P
setup-plots
, Y8 m; a! J" S* N
: V' q* z/ V! w5 C' ?1 M
do-plots

3 X& n$ O, j$ C* Gend
" H8 Q" I2 D: l! d6 R: b1 `8 G5 [) y) R) J% o2 y7 M  F
to initialize-settings
- G5 C0 d, B* _2 O! s$ v% Z+ ~% B. L* u
set global-reputation-list []

( d4 F$ d+ {# F1 ^8 Y( D. M8 T! j( G
set credibility-list n-values people [0.5]
2 K- G4 C8 l( w) M/ v* W9 k
- v$ d& j- ?; `8 }) {) O
set honest-service 0
4 [5 ^5 s7 j+ b! I& e+ j

9 T4 q" B8 g% i+ n5 `set unhonest-service 0

+ \: |! i- C. _- l$ o- q! M( j2 z) J% D* T! h; n7 b4 |
set oscillation 0

. R. b* ?4 @  _4 ^
3 }# F+ K6 G( o: ^, F: [7 Nset rand-dynamic 0

5 v% d4 [1 W, Yend
5 I( y0 \8 z/ R% u6 Y* y  ]2 n; b! Q/ B; [" }, i$ q$ p, V
to setup-turtles
! k$ Z; G; [4 V: i; u4 L# |# M8 \2 s# zset shape "person") @% G. s3 B1 C! j- f
setxy random-xcor random-ycor
5 M: a6 r- B* Q- w* `' e5 s  n% {. Lset trade-record-one []
+ D& X; Q& T3 k

* z$ M; P" A; q( P* g8 L: iset trade-record-all n-values people [(list (? + 1) 0 0)] ' ~% @% z  U& v# |

8 d9 T8 p" P8 M' n' S7 s3 xset trade-record-current []
3 {" m" |9 I! i$ X7 ^! oset credibility-receive []9 |2 }7 }1 e1 W
set local-reputation 0.5# y2 K. o% M/ x
set neighbor-total 0
, Y+ L6 l7 l7 g/ Z0 b0 jset trade-times-total 0- h8 p1 y7 {: E$ _4 D
set trade-money-total 0
1 l3 q: p, X/ iset customer nobody9 B5 w  x! b& [# b
set credibility-all n-values people [creat-credibility]
+ X( e; h3 {6 T0 {' G4 d6 |* qset credibility n-values people [-1]/ u/ S5 K( w: H( b% G& T2 a$ m
get-color$ i! t! e+ P# _. d

8 u. P% M" R  Y  Zend" V! k6 I- W+ p8 c9 J7 M1 A" a
3 _: R: K6 v* y/ Q4 z  l' m
to-report creat-credibility2 j  r  S' k+ E
report n-values people [0.5]
& Q$ u! i& p" h; ^end
4 X4 E' `% j  _9 w
! V8 ]9 e+ F2 T: T0 V/ Ato setup-plots/ F4 x0 c0 Q  Z% U5 K/ m- ?' _( q

0 J2 w) b! m, y, S$ }/ j% Tset xmax 30
: d* S+ u  g6 M8 `$ ~) u$ N

: T* b' W+ m! L; K( {! lset ymax 1.0

3 T  X5 _$ u2 W) W: f+ i9 l2 [# h9 ~) F
clear-all-plots
: S( L0 p7 m3 S- p3 J
2 l2 T/ O, ^; d& U: R. v
setup-plot1
: Z) @' p4 t9 I% {: D

, J  z' \2 f3 q1 {setup-plot2

/ G) V" y' a, Q
; n0 g# v& b7 p  ^2 U" Ssetup-plot3
9 P4 h, W/ T& [& `% \" ]
end
2 \% I) t) P9 Q7 m& k& c4 U3 j9 u4 U- ?8 R5 ]0 p1 w
;;run time procedures6 M1 V7 J7 c8 o+ R6 z6 T. Z5 i9 y
" Y. i" k* q; Y& ~# W
to go7 l9 x+ w0 J* f4 m) Q
# f/ U8 Q: e6 U( q5 m3 ~
ask turtles [do-business]
0 g; R; V) Z: c
end
+ ]9 O1 _* Q5 n5 t! g$ N" @- e5 q% p+ T! h) w
to do-business 4 k' m# C% f1 M  C- G2 L' ~0 r
# A6 A( ]$ G+ r' A) |

! }# p$ x* s2 Y$ c8 P" v1 \rt random 360

" j( s* @3 z  M0 {# L% ]9 g9 m3 Z" {2 y' w- {- H
fd 1
8 e# R" x, n/ k0 \' _2 ~

* h' C" Q' E, P; q; g  bifelse(other turtles-here != nobody)[

9 n0 p0 O$ c0 I6 Z* c
5 A9 M8 c8 l$ |/ D3 Jset customer one-of other turtles-here
* W% \* Z% v  h  g

- v9 h  X, j. O  Q1 @;; set [customer] of customer myself

; Q3 y8 h* ]+ U$ |6 P
* w- x; d2 u7 t! Oset [trade-record-one] of self item (([who] of customer) - 1)
+ h3 U0 E9 y! w[trade-record-all]of self+ A  e4 i/ D) B  C; ^" F! o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ a5 {& \9 u! V2 U7 O% N% [1 V/ J
* `3 i! M. T/ l* d, a8 m
set [trade-record-one] of customer item (([who] of self) - 1)
1 O8 X  k; [% k# Y# S, h[trade-record-all]of customer

9 h; B  ~- \. ?1 g6 x! x  p1 g
( ^1 D6 [6 v, F# B( ^) J% h8 iset [trade-record-one-len] of self length [trade-record-one] of self

( t, }2 Q0 Z; C& R# y! D4 G6 i: l0 ~) P! q9 D+ Z5 m
set trade-record-current( list (timer) (random money-upper-limit))

$ @; A- Z6 Y: k2 n
) M9 t7 I# Z; P2 P* d! @# z) yask self [do-trust]
- r% m, W- c1 f2 i" k5 g3 j4 {;;
先求ij的信任度
8 z5 z; N4 J" q0 p; n+ N3 a6 Q7 p, l0 B& I+ u0 u+ Y$ @
if ([trust-ok] of self)
/ s6 Z1 D; R, W6 K. P1 I* k;;
根据ij的信任度来决定是否与j进行交易[
5 F9 y* ?, v. |9 L5 I+ S3 vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' y0 m7 S+ r- u. v0 W

% D$ T7 u# ~- u0 q. C9 R[
) n$ H1 @; K0 y% q/ _
! `& X# j# x  s
do-trade

- F/ G( E1 T) j" O" Q
5 k& X7 a' k/ f6 oupdate-credibility-ijl
1 ]% {+ k5 D' h1 a: h/ |
' {# s  _. m7 ^* _! |
update-credibility-list
& n1 v: Z- b1 Q! C( U& Z
; ]( o& P; D1 O4 Q
/ i8 p0 _: C6 ]& F4 k$ v
update-global-reputation-list
1 j0 `6 U, E0 Q- I
* S& y) g0 A+ O) }, K" i* h
poll-class

# @+ W( ?6 F! x  z# j6 J  h9 K  D; _# Q$ q
get-color
& T* B. I3 x' t) u2 O# y% N
0 P- m) o9 H! R: N. k7 D$ y
]]
, q9 r+ b+ v1 O9 V9 K* ~
/ o  h3 T# B; R- v8 |( i3 v5 w;;
如果所得的信任度满足条件,则进行交易
3 ^# V: y, @& b* _( e
3 r. x% }( C# p" F  d4 D$ y[
- f, q$ [  h9 `( I% v
. H( T+ |' n7 W
rt random 360
1 R' U6 S, L' O  ~; l+ G
6 L6 c9 I$ O) a8 E" s3 u. s6 ^  H
fd 1
0 K0 o+ m  |6 D

- Y5 ~/ ~- c4 W0 _% ]6 c]
, y9 K+ L! t8 [$ Q" B) m

" g3 z( t0 i! G" {end

7 A$ O# o- o: g9 T! n. B
  L- R1 I! j/ ~5 [9 o9 [  eto do-trust
+ O4 p/ d. F2 f# r2 @2 Bset trust-ok False% ?5 S5 C( c+ F$ ~. @

  l6 {2 |/ K+ E/ d- |; S
) }$ M! {; J& _7 ?
let max-trade-times 03 ?) X3 P  M- j9 t! X% g) a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% e5 L3 j" H' N0 u+ M1 o( [
let max-trade-money 02 M) \7 B$ e* B8 I; N' }5 F2 P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; _* ]7 B5 T; ^& g) G" R, Flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( w0 x1 _; j% J# `+ r3 K/ Z! S" \
. e8 a) p1 {* R6 S( O2 x8 S

2 Z3 x' y' h- Q- M1 e& N+ }get-global-proportion
7 F% V! M1 G$ jlet trust-value
; ^/ M5 L" A0 g& X* Y$ `' y3 Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. C9 e( x7 }7 t# G9 s/ l
if(trust-value > trade-trust-value)
2 D0 f4 e) B% \7 E[set trust-ok true]. u) M' n/ Z4 b
end$ W7 v# x# o6 ~0 c# w% k" m4 r

0 E8 c+ S& L0 Y) ]! c# L9 [to get-global-proportion
/ O- x6 T& Z7 V4 N- _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 x: v1 L  C) d; H[set global-proportion 0]6 A! M, M8 H4 C7 I: m; L8 T
[let i 0# r- f' N" r- \
let sum-money 06 z) ?. q( W) k4 }) X
while[ i < people]7 j" w# O9 a* d! p: b9 f
[; b4 T/ x( O1 c: r6 l! |
if( length (item i
& C. T& ?+ a; w! k  H5 h! O[trade-record-all] of customer) > 3 )

0 R; W1 Z4 z; Y2 o5 h6 `) L[
" c  A' V8 `8 M& vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ |! g% J( e+ z7 i6 h+ v9 R]+ W9 S/ M$ _% ~# A
]
# y! E: p( ^* qlet j 0
4 j6 M' ?2 @% O+ n( L/ v( a: [let note 0
8 h# W' T5 j- R% n3 K) Y$ Xwhile[ j < people], R2 K4 }8 _! ~$ T1 I1 }9 h* K
[/ T1 X- f$ O- ~& Z0 a2 o
if( length (item i
8 _4 e& u8 p1 a! O3 a5 g5 E; K[trade-record-all] of customer) > 3 )
$ ^' s2 {2 O# Q2 H# o
[" o$ \4 D: o1 \6 C3 |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ ?9 g  {; f  \2 U6 n# C3 W- y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 s- X8 d5 z$ m- H2 }, V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 ]$ b$ f8 I- f+ a+ }]9 L9 U* x: E7 e2 v. I& p0 a
]+ L+ [& K7 m9 Y& f
set global-proportion note) w+ m5 E- v. Q& I0 w1 \
]
# M* F! M$ ?. A; L( Y/ b: j) eend: V- c$ d0 e0 M+ L+ d

8 }* q4 }+ w' uto do-trade
' T7 d: f3 M2 `- C6 t% I( d1 y1 {. R;;
这个过程实际上是给双方作出评价的过程
: u( I# g0 B3 e" gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 k5 K0 X( I. Y0 q" E2 H* m# Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- Y0 ~7 o0 G2 n' ^# Mset trade-record-current lput(timer) trade-record-current
3 N& ?6 u/ }5 C3 q# t2 A- g;;
评价时间  i& n. i$ ]' F( y5 |
ask myself [2 d$ O3 R. _& v7 v4 Y( M6 O
update-local-reputation
* u) ?" d7 I( B! O1 k2 \set trade-record-current lput([local-reputation] of myself) trade-record-current
. X9 I* _$ Y) M$ F5 ?. Z5 m]9 }" p) O" B6 t5 r9 T! P5 ?. G7 g. ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- y9 q& e# u9 a;;
将此次交易的记录加入到trade-record-one
2 Y4 c$ c* v9 f5 dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 R: I& n$ R; ?
let note (item 2 trade-record-current )
& B4 j5 I4 S: G5 c0 R, W1 }1 q( nset trade-record-current! N1 B4 i1 q$ ~% f
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 i1 x" H  n( E; g5 \set trade-record-current
# o8 ~; Q& Q+ Y: y* {(replace-item 3 trade-record-current note)
" |6 P4 g) S* q# b6 W' ^
3 {: f) |- U( K

/ Q6 y; E8 l( {$ o+ b4 h/ v0 H) o: w6 kask customer [
6 l5 r8 s0 I% w# oupdate-local-reputation
8 u" K; O7 }1 E7 a0 f5 B  pset trade-record-current
, n" S9 G+ m9 \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- g8 B0 r* X2 _7 ^- @- p' T! r" j]
( g; y  j& E4 d) @, `' Z
4 ?  L6 n: R/ m7 t2 v) i: k' d
% X, V! |1 V( N2 d+ I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& h# \0 c/ L% w
: V" @2 x; a4 W$ R7 l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 [$ Z& U$ }* j6 N' k* X;;
将此次交易的记录加入到customertrade-record-all) j: |' o& m" i+ x, j8 R
end
9 M4 q9 S0 y) [" i+ ~3 F3 w8 f1 R2 b
to update-local-reputation# ?! V, h) W2 Z8 H0 C' j
set [trade-record-one-len] of myself length [trade-record-one] of myself
  A& J- G. V, o3 J7 |
( q$ {* M7 Q1 m) ~
! ]. z5 d$ N% `( i;;if [trade-record-one-len] of myself > 3

. g5 {' z* E3 ?+ I+ {update-neighbor-total& R7 X# I  ]/ T$ G
;;
更新邻居节点的数目,在此进行3 t6 X. ]6 a# C0 t$ [6 f6 H
let i 30 b: t  x4 x- o  `5 F! k  y
let sum-time 06 e3 h5 l( ~+ H, e! [
while[i < [trade-record-one-len] of myself]. ?" E+ ~  T7 z; K* `
[
! D9 N# K) k" I5 o( q3 ?+ O% [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 `4 G8 A# W0 rset i. `* a8 O3 s) P2 P
( i + 1)

" T7 \2 d) n$ M( Z8 C+ @9 |]
+ S+ R5 p3 ?. |6 D9 klet j 3  Q$ b: H) G9 q9 l
let sum-money 05 W5 C5 ^9 _. y, ~, K3 h
while[j < [trade-record-one-len] of myself]
1 K; d! v: U0 K4 u[
4 L- X! O) ?- P1 R% y7 _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)
9 A& j, |. F2 x- N: H" Hset j  z& Y8 H- G* G; o
( j + 1)
" @2 i5 u& o+ G5 F" T
], m9 n/ C# b! \9 @6 H1 G0 T2 H
let k 3( b+ K6 a, r- f' [& Q) L
let power 0
- E! m8 }+ Q% rlet local 0; r6 B' |: g( W8 d: c/ i
while [k <[trade-record-one-len] of myself]
# t1 A5 {3 e( `7 Y[
9 ]1 f9 v7 r4 e4 Y8 |, Mset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ' S; K! G0 S& c, t# C# l& o
set k (k + 1)2 Y: ?( e8 u7 s4 S* U7 w
]! ^9 N5 F' z( ^0 W) ^5 Q  t
set [local-reputation] of myself (local)5 m2 a# o" b+ b" \. K
end
5 b) [' k% {3 i1 ?
1 N5 [* Y  G  w$ |+ `& p0 H6 r/ Gto update-neighbor-total
% @, y& ~& S6 @% e* l9 T  |6 z3 D, z) U5 G: _. b' M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( x0 M6 n8 W; b2 V& c! E
7 \5 V% J1 A4 n) ~: E
* Q+ V9 |# A5 m1 w! i/ o
end+ P: g$ D* P! \  H. y; O0 Z/ a

7 E6 T. J& z, cto update-credibility-ijl & F4 S! a; c2 n) t/ t& Y
5 x, p6 L- q' d) ^& l3 X
;;
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 n' O5 B8 t- p0 ~  ulet l 0' Z2 u5 J, y; E" A; L3 ^# `2 f
while[ l < people ]6 X+ i7 r& _& H4 H; v! u
;;
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3 {# x/ o; E2 i
[
& M: f# g5 f. H/ }3 w' g( k& d3 mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 g- ]4 j9 }* ^+ Y% I  x  W+ rif (trade-record-one-j-l-len > 3)/ Z( J" |4 I! I1 \1 P" F7 S
[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
8 ?2 r+ d& e' [# Tlet i 33 ~- f( {6 F1 Z4 K
let sum-time 0' C$ v0 H: a4 y: y
while[i < trade-record-one-len]3 [# y5 }9 d# F) ~, x$ A+ s
[" e. v+ r$ L7 C3 Q! I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 `# D) ~* ^: g, \
set i
; p* a/ j/ N' f+ Z. f( i + 1)

" i9 {3 V+ s  W3 t]
- D# O: k# z- F$ @- F2 Y6 Vlet credibility-i-j-l 0
. m7 [- ^- {1 {;;i
评价(jjl的评价)' W& Q1 M/ B5 ~6 R& P5 J( S
let j 3: E5 l, M$ q' h! N) `( I2 N
let k 40 |; _: E- r5 c# `, ]
while[j < trade-record-one-len]7 X3 `! A5 `/ \9 Y- O4 M$ d
[
/ n' w- R# S+ Q* M/ K. _/ mwhile [((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
7 f  r1 A+ O# dset 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 k! X, n& Z$ ^% h1 V! Y
set j
9 Q9 q* L, m; O/ h/ W' l& X) ~5 M7 m( j + 1)
- k' X' Z, B8 F' R
]
+ F8 ^, A7 |* e9 ?% `' Iset [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 ))! t  u+ t3 K3 C" T

  J* u" f9 O: M1 I3 b
; E* |: [/ W& f+ T7 z' D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  B7 _: G1 \2 C) z/ P
;;
及时更新il的评价质量的评价- O$ k1 S* f1 Z/ I( F& h- d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( E* j/ T  a  n/ G; {set l (l + 1). R* M" n" R. h
]
1 Y) {; I7 I; send: ~) l% s7 ^  ?2 H5 Q
; W, ]3 a' a0 k
to update-credibility-list5 }' `) F6 I- J8 G% z
let i 0- ~7 A- r% U& ]4 K9 L
while[i < people]/ A! h: y& t5 u  C8 D
[
" ^" O: Y$ N. Z8 @( @let j 0
+ C8 I- }- J  G1 B+ q' a7 Ilet note 0
2 i/ i) ~% |' n- X. o2 E# Ylet k 0
! X& A1 G* @. v8 S5 D;;
计作出过评价的邻居节点的数目
7 E# y9 e. X* f# |# Fwhile[j < people]6 K/ e$ C! [% Z! i) [5 c* j9 n
[) E$ i2 [2 m: X8 c
if (item j( [credibility] of turtle (i + 1)) != -1)
3 B7 Z1 |$ m- r' C;;
判断是否给本turtle的评价质量做出过评价的节点
* t( m  J) ?" a8 |5 ^! L+ ^[set note (note + item j ([credibility]of turtle (i + 1)))4 ~' ]1 g' w6 E+ D! h
;;*(exp (-(people - 2)))/(people - 2))]
; k0 @1 b, B7 m* U$ T7 H7 ^1 {
set k (k + 1)7 r: v- g) {% H5 H6 L5 u4 f
]9 q7 J. u# m' s+ w0 E3 Y2 M
set j (j + 1)
3 [5 @7 g0 a% i% o], v8 A9 G5 Q+ \( H' J2 ^
set note (note *(exp (- (1 / k)))/ k)
' b; i0 t0 m: f4 c6 e& R' g4 yset credibility-list (replace-item i credibility-list note)/ ~/ O" v: O1 s, x
set i (i + 1)$ S8 X$ z  ]6 v
]0 J, q, u0 E" _, C" N9 c5 v
end
/ k4 X; w) W9 p9 |$ Z- ~- _! i& a2 S9 N5 T2 T
to update-global-reputation-list
$ W7 S0 z0 ?( ilet j 0$ L' X! L4 |1 @4 M3 Y# x
while[j < people]
9 R9 L7 m) V% a7 g; H% h2 {[6 T6 q6 i6 a5 [8 d/ \! Y
let new 0
9 M' s: ^! @. O8 s- V- J;;
暂存新的一个全局声誉
  I* o6 w+ J3 k  M- {+ g, T0 Ulet i 0
9 s5 R( a9 C2 O2 l, t' A3 @let sum-money 08 h2 i! d$ y/ h' w, y
let credibility-money 0
2 n: s3 J% W  g+ P6 }while [i < people]! j+ p: a/ [- {& y1 X1 }' u: }. E
[
- _% w+ ~# h: e* _! @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 a/ W- F) u7 ~( Q  \+ P* C( J/ j$ H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 [* n. N( Z5 ]set i (i + 1)
2 m; e0 q* a9 u]" ^5 J8 s: J  Y' r3 r
let k 05 s5 l" d* e2 R( t+ \
let new1 03 z) P/ l2 J. {! V: l
while [k < people]* U, `  _! J5 C: Y3 i7 r
[9 A1 j1 f( S3 ]9 p; N4 p+ l
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)
' q% G3 u" h4 b4 o. }8 T) L  Dset k (k + 1)7 Q; ~$ t7 p1 Y" o: v4 W
]
% M# m2 J& x- B6 ^0 \3 lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * ^' _! Q  O0 F9 d4 F4 r  g, f; {
set global-reputation-list (replace-item j global-reputation-list new)# X: g; A  [, i; o' x0 F
set j (j + 1)1 ]  C6 L9 V; F: f4 @
]. s7 m$ y2 A9 }; c9 }5 ]
end3 v9 i  s8 C3 G) \* u! b: _
. M; ]- `$ k7 M# P9 a

3 ]9 H5 R7 I1 j, Q  V4 O- E* l% @5 o7 w& q) U
to get-color9 O" M; z9 x5 U1 X  B
, |- `; U8 f/ a4 v% H
set color blue

+ u  H5 o1 V: {- ]end
7 [' v) ~+ E/ j7 q
5 j( h+ I- Z5 I# ]9 t7 Xto poll-class
1 B" z2 s% {2 Aend* r# [: B9 o; M- B( C* J
; F+ e3 `, v: a( [% a- o
to setup-plot1
+ d& B% C8 C! B/ O4 p7 n
& b9 N' ~6 K* }set-current-plot "Trends-of-Local-reputation"
% R8 e+ P$ k/ b
8 {5 U8 D, C: T/ `
set-plot-x-range 0 xmax
: X0 V& K7 @9 ^6 l. p7 J6 ]: _
$ s* W* ?) c* g  Y  _
set-plot-y-range 0.0 ymax

& F) x& @9 b- P  J1 o  Yend
4 O. H  r9 n! L
; A+ Q8 W( Y- X! bto setup-plot2: H4 e- m+ ^: p; k1 n

5 D0 C" o$ f! O7 \set-current-plot "Trends-of-global-reputation"
+ t6 W1 y: a5 J
& ^4 R8 o: W  c' Y% r1 ]) Y9 ^
set-plot-x-range 0 xmax
1 j) V/ y2 S; _2 X) v9 t( ?

6 z1 \6 h' t+ J' @set-plot-y-range 0.0 ymax

+ R. ^* s* M' O: ~9 e! _, send
8 D( C; w7 M# N" O) D) [- N; u/ @7 ~3 }
to setup-plot3
- y$ s- `6 S" ~; H9 D9 ?0 n8 P' z# N0 Y* K" S, ~
set-current-plot "Trends-of-credibility"

0 N0 k- i0 j2 m" V" B( w
* M8 P; \+ l, ?& ~" n' ^; Fset-plot-x-range 0 xmax
' `/ z) D- L4 U# k
  {8 P9 v8 K( ^  S% W
set-plot-y-range 0.0 ymax

9 ]& J& J9 m, b9 U7 F: send
# P" ^, t$ q  \# {: s- X4 B6 ?* ^& T: p6 u. p3 ^6 r1 `/ y  @
to do-plots: x3 k1 S6 B! V- S2 |9 d8 X
set-current-plot "Trends-of-Local-reputation"
% {6 S9 [0 d2 V3 \- S" w+ Hset-current-plot-pen "Honest service"
( ?, h/ O2 T. Q0 z0 Lend
  L6 {, [. n% v1 O) e  b1 _9 F/ ]2 c& J: ^' o5 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.
% U' ^6 a! d) I" ~( Y( D) s, G  X5 p. Z: b
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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