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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:. C4 p; L, c6 n
to do-business
0 E" o! d2 w) s: k, t; U4 t/ q. { rt random 3601 p0 y6 j! x3 |, I: _% _
fd 1# P: X* f- s5 R) ~  V
ifelse(other turtles-here != nobody)[: g, X) L# J2 v: L, R
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.& o5 B3 y5 p! O% t  v) ^# Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . M/ w+ _! V  `& G' K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& f( P/ J  [/ v% a' n! ^
   set [trade-record-one-len] of self length [trade-record-one] of self# X* o7 p, G5 P$ i, t7 p7 {
   set trade-record-current( list (timer) (random money-upper-limit))' [& o5 D9 c% u; ?2 e5 B# }

1 I5 Z1 P1 f' j" O问题的提示如下:7 \+ P! Z5 P* F, B, _4 `
5 o- q5 O& m/ ]
error while turtle 50 running OF in procedure DO-BUSINESS$ n$ x# W& D  R5 R
  called by procedure GO  ?) A3 F  ~( g  @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; }5 `% b9 |' C/ r3 h) q
(halted running of go)6 W) w3 p. }, r5 u& S

- D) }" T1 R2 L" J2 Q) x  |7 t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~~1 G, E# Y+ y) z2 J) S$ x3 Y5 }# z
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( X6 F4 h. r0 K' H1 |2 b
globals[- X4 T/ b8 N/ Z% o" y" Y1 q
xmax
0 O5 Q2 i1 [, G' e  B1 z9 t% Z$ Cymax  F4 f' }  O" {( ?3 f5 E0 ~, J0 Z
global-reputation-list- J* d: }7 \/ @% c, q/ }! z) _
+ M# Y6 }3 g8 X. v; x: `2 L0 C
;;
每一个turtle的全局声誉都存在此LIST
8 M6 r4 M; I6 J+ }% J( scredibility-list
% Y" o  T5 ?7 z, M3 l7 w  Y;;
每一个turtle的评价可信度
. M- E0 @- |" J$ w0 Vhonest-service
' y1 J+ l% s/ r4 H' n$ p. H) y7 r5 aunhonest-service
0 B4 b/ v  w8 n7 j. @+ r8 Eoscillation' q( l7 z3 q+ ]9 W9 Z
rand-dynamic1 Q" f4 u& D& o# E  s
]: C; B9 l* c) Y8 ^7 w4 i# I4 Y# o
$ h' R7 K! U3 V9 Z! a8 i
turtles-own[
8 F  q- F; o5 F4 H9 P+ {7 Ttrade-record-all8 g( z$ T9 ^" C
;;a list of lists,
trade-record-one组成5 O2 @0 d0 ^# X' e* B8 x# O  S& q
trade-record-one7 i8 k, U/ I5 o, O/ F
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 Q( q. W  w6 r; W, `! ]

' z1 e8 d+ U- j  e- ?% a5 [, L( R! V;;[
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]]* T8 P+ \* [, G" y  D) z: N
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], `, w  E- R7 e+ X+ V+ s- v* J: y/ r
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
3 V  r- [; z/ E2 j& ~1 vneighbor-total
/ j* x2 u7 b  V;;
记录该turtle的邻居节点的数目
- G" r$ P( [) w5 m" x% K' ntrade-time. ~/ p! [) [2 ^
;;
当前发生交易的turtle的交易时间
0 Z2 v$ H8 W$ |appraise-give
1 i" w: v6 I' B5 f2 j5 P;;
当前发生交易时给出的评价* A' y5 `" j- ?; r5 H
appraise-receive
2 O# G2 G  f+ ]% o* ~: W; m;;
当前发生交易时收到的评价
; ?- x6 F( G; r! G2 M, W0 eappraise-time2 `/ j0 m7 m! O3 i# N5 o& x0 H: i% ^8 [
;;
当前发生交易时的评价时间7 d$ i) [1 @4 m& U  K. L
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" m1 s( v; l5 ]" k0 P2 Z3 Wtrade-times-total9 A! M) H) j  P! C" }- Q
;;
与当前turtle的交易总次数! ?8 P) u8 N! E4 h/ Y" `
trade-money-total
4 ?! ~! ^7 E7 `, n% }2 ?5 k9 O! T;;
与当前turtle的交易总金额+ |. c4 x+ {" o0 |
local-reputation
6 W6 `3 I# Z( iglobal-reputation
. c) y7 u$ s# w* Dcredibility/ K& N  W1 a- N
;;
评价可信度,每次交易后都需要更新! B5 }) x) A+ `% Q" |; \* ^
credibility-all, p2 d6 u0 h) o  \- s! `( ]0 K
;;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+ v9 o( ]0 k; b; G) g# N
6 L( z1 L( \# e1 ?( `( X) j
;;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- ]. d) m4 J3 X! E0 J, N- S: }
credibility-one) d* `9 W& V9 q7 F5 K& S
;;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( ]$ s$ h% |# B' U+ w# B# f$ s
global-proportion7 A+ e: C9 _/ Z) @0 ], d% Q. R
customer
  G1 I5 Q, `8 k1 V$ @! `! j6 Vcustomer-no. W1 z* P; c: {6 f1 E8 U
trust-ok! P/ s3 ]0 D+ H7 i+ ~/ B
trade-record-one-len;;trade-record-one的长度& p! S/ S8 Z5 m; h/ v
]8 u1 l4 h% ~, h$ b% G
! o: ?8 s. g5 }: G
;;setup procedure! k& s/ D9 w: o
: Q1 _) g/ o1 \! @
to setup
$ ]$ O! I7 z2 F! t) O9 w+ O. H
: ?* t/ O4 f" r$ j5 Q* w- K' [ca

" Y3 g3 V6 ^9 C: `0 p! ~) I  s8 q/ b- E3 `) x! c- `
initialize-settings
1 B& q4 _4 R$ z& o( k8 ]/ |

- r+ i. U6 {/ X1 i) Q4 mcrt people [setup-turtles]
& \- t, x& B: {+ O

4 Y+ ?. x: |+ {: k. Sreset-timer
3 I! q! J1 }6 r# L& e( C

. z4 ^* U! }- S, {  Y+ bpoll-class
7 C  g) @% O- F" \

4 m% B5 e8 N4 p7 ?9 Y5 I; xsetup-plots
2 W2 i8 Q6 a! l8 o: z

! q" U. N; Q. ^' [0 ~% J" edo-plots

# W: |, L: E* w' a& s$ [# Aend  i% T- z, V3 W6 }3 _( r5 C  T
! I! ^3 P. U( N- d4 l) [0 s
to initialize-settings
$ T7 K4 x/ x! g7 E$ u# l8 ~
9 F( _& q  \& a  A4 c  s7 Kset global-reputation-list []
4 h5 ~- m' r, t

( a7 a" Q( E9 nset credibility-list n-values people [0.5]
( |3 E; F, h" b8 K% O0 _5 l. G: g
/ F7 {7 k# i, }  x- a7 I6 K; T* z% g
set honest-service 0

8 U* E5 M* L2 G; p, j( [
& h4 {6 B% Y* B* s6 A. k3 aset unhonest-service 0
8 T6 d1 ]9 u/ j/ L  e

9 F' @4 V: j& U$ @! \( ^set oscillation 0

2 |: D8 e* s# H' s2 P( _2 S
6 e0 L* V/ ~; B6 _set rand-dynamic 0
5 j+ H& y$ r3 }
end
6 |6 \- n$ M9 q; L+ d! y5 ]$ H9 K6 \( ?9 N& x. G% a" \8 Q
to setup-turtles
% c2 Z$ m  X0 e# _) ~set shape "person"% J: k, V' Y1 k7 ]6 |$ n( v
setxy random-xcor random-ycor- h! @* u- \$ c$ W' J* l, Y
set trade-record-one []/ Y* _1 Y2 I' J0 p! N6 m1 a

$ P3 u2 \8 P6 r4 {8 X" \. Sset trade-record-all n-values people [(list (? + 1) 0 0)] ! L9 s4 }, A( H# m# T8 T  c" a! a

4 Q9 B% \* r2 Aset trade-record-current []
. s9 l; Q0 h) |) X( ?9 ^$ Nset credibility-receive []# H& V- Q1 t5 X/ I( k
set local-reputation 0.5
1 K; t  s9 Q& l; Q0 ]/ dset neighbor-total 0  J6 Y, c  U* \& O9 |
set trade-times-total 0/ v& V; f/ _" a1 P
set trade-money-total 0- O, Q- L  _' f; f2 k
set customer nobody
+ Y% M4 N7 q# X9 f  Sset credibility-all n-values people [creat-credibility]
- F6 y$ E9 m/ ]& |+ b( Eset credibility n-values people [-1]
6 g  Q& i$ r1 {: ~. v: kget-color
* ^4 h  P& H7 ]7 l
" `! J$ l9 X8 f5 ]) p7 ]/ `# p9 l8 {
end
2 [6 F9 M  X1 i' g; ?5 \7 h" O- Q
- K- v) {, o: _6 d' Oto-report creat-credibility
8 t, e2 G( A2 k2 kreport n-values people [0.5]4 [* V, @3 ~% J/ Y1 p+ D5 w! Q
end
% {1 r3 t2 v' j2 M+ ^  P4 |  Z6 S) Q7 R. g, k% D
to setup-plots
$ ~1 {7 v4 g; X  W6 C& W" ~" W
# R( `" o: ]8 k9 g% ]set xmax 30

$ ?* T3 `6 v# S3 d0 h; E$ b1 F# O- t# X4 z3 `. J" E$ [5 p- ?
set ymax 1.0

" ?- E9 ?% X2 f4 i: v. ?+ }5 c
! P* k% N7 k2 N$ [; ^! j1 _clear-all-plots

! t" g9 F: n2 r
7 A( y: z# r" \8 C( W! Esetup-plot1

% @6 |# v6 ^3 ?4 ^7 ~" V# ^# Z  Q1 ~4 w7 w1 F, \. {& b6 l# I
setup-plot2

  r  }! `! \! G  P
" _" Q; ~* f/ N3 v% Q+ r$ r4 l. ~setup-plot3

7 V; J/ y% o( n2 \9 u7 g7 Cend
7 K& d/ q8 E  [8 U1 F. A+ E& n! S" R8 e2 M5 Z( v% `8 Q" a7 q
;;run time procedures: K7 N+ d2 [2 R. x+ z, p

& {7 s; R) M0 ~, w! G) hto go4 ]* j# B9 N7 S- v& z: @0 G+ Q

: H* v  @# a5 O0 Dask turtles [do-business]

# H( B/ g! L5 {& `2 I2 lend4 I; ]/ P- f" \, w
* V! }& O. K5 k5 B1 J# d
to do-business 4 ]& X0 S' t3 ~( G: {

5 {  `% [+ @7 o) @/ L- g  B3 P8 z! A" X1 G- ?7 V3 w
rt random 360

6 {& F! }# I( Q& [$ O! Q9 p# ^
6 u* M& v( z' z' b. \. Z  Jfd 1
4 L" _# T9 ~* d: W9 ]
3 X1 I2 g3 C; _  K: l, W6 P
ifelse(other turtles-here != nobody)[
: q+ X. x' G- L

, b! \) w* j, \7 {: X7 Jset customer one-of other turtles-here

, C: C- J6 @' N1 e
6 S1 Y: |% N- ^;; set [customer] of customer myself
" R8 ~. p( z/ k- M0 K2 ~
2 A# ]$ @* v0 _( m7 l: C
set [trade-record-one] of self item (([who] of customer) - 1)
0 R8 }8 s. }+ h  F8 G# B% i: L$ g+ A[trade-record-all]of self
, M5 ?7 {# f2 t0 F2 K7 P7 F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 `" d8 Z3 I4 o- W! ~$ g2 Z1 Y, m7 M4 ?: V1 n$ V
set [trade-record-one] of customer item (([who] of self) - 1)
1 T( {$ ]# C9 k6 U# }9 ~2 C, b[trade-record-all]of customer
" U2 A1 Q. ]8 y% A

  d+ g7 |) ~9 dset [trade-record-one-len] of self length [trade-record-one] of self

& {  }$ q2 }' x2 S- U
7 T4 I  x. a% _; N$ }set trade-record-current( list (timer) (random money-upper-limit))
7 W, f, T5 {# _2 l1 n

6 B& ]: f  V! A0 `% |ask self [do-trust]
5 [2 s% X; F; b! a$ z;;
先求ij的信任度
: l; U* v% |2 v  M# x& k2 t; X1 Q) m2 z
if ([trust-ok] of self)
; p1 e' q& W5 n;;
根据ij的信任度来决定是否与j进行交易[
) F' y! Z# g5 g1 V' ~2 Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* `  l; c. t- i

4 `( f  F% H! t1 T. w[

) m; T' z/ }) q
' B/ p0 g9 a; S) Zdo-trade
+ K# b6 {- K( \- q9 u$ g
( n# H, v" B' C; K) ]$ I+ ~; |
update-credibility-ijl
) ?! }# j: d. J: M9 e: B2 `0 C

( Z9 b' h* G/ Gupdate-credibility-list7 A( [1 Z* m6 g2 D! c  E! [
, H( f5 q: Z9 {" r8 t. H; ^- F

3 H0 u' W+ v; s. u8 Yupdate-global-reputation-list
% z) }/ _2 n+ s& T
$ I6 q  i: n3 f" w; S+ p0 |8 k
poll-class

; q( B/ w5 w8 x5 Z7 i' J+ {0 s2 I$ [) ], @
get-color

- D% `7 c' J8 j; o4 \: V6 y) _5 a' L( G% F
]]
. z1 M, _& j8 b& c9 S- G  E' b, R. A. W: l4 y9 V6 ~* S5 l
;;
如果所得的信任度满足条件,则进行交易
; Q5 J9 D* l- @0 ?# x% h. x( v8 K* O/ h6 ?/ y3 J8 F
[
: `' i& B# r+ i6 y0 M$ r# j
8 S& I- T6 d' g& {) w0 f& @
rt random 360
' X, T: |8 |) \7 v1 Z, l

- b7 a4 ]. b# @8 tfd 1

% z9 Q4 m) n5 O- ~4 K: W# Q: F* W( E
]

! @9 k6 c, q+ ]9 L0 _5 I
; C) F: }$ T5 wend

1 Y6 P* H* D* g* I4 g/ e
/ u' ~7 m1 d- u' c# D5 `4 a% |- G$ [to do-trust
4 T, @; i- {4 t' bset trust-ok False
: u; ~6 d; \9 a8 v8 z
+ A5 p- S8 \1 V# [
# Z  V  _4 q) n9 R
let max-trade-times 03 d2 {. r7 \; A8 ?7 J. ]  v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 D% r" p' n) l' i+ S( Y; }! ]
let max-trade-money 0
1 i' ?- s- v0 B( Q$ zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) I* r+ A0 o5 G5 J' A* D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! @% o% J8 o" D* W5 L  y* t; i/ D# g& [! \0 I! |. e; t4 _

$ L  m8 P" F5 N0 p' x' F! ]get-global-proportion8 M% r0 ]& H" |' y6 T) j' J; B5 c
let trust-value
9 P9 T- I$ K7 j: y  I1 Y6 d( clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- O7 F6 Q* J* H$ z+ b6 k
if(trust-value > trade-trust-value)! x6 I6 q+ ]' E. h+ q! F& h7 }; q
[set trust-ok true]* F" L2 B5 y4 L" M+ U7 \9 b
end& R2 a. [! c8 J) E' W
& Q& z' u7 j! }6 X+ g1 e
to get-global-proportion
* m; \+ F& n5 U# a6 N3 L9 {( L" eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# A. y0 O1 j* v8 B[set global-proportion 0]8 ?0 M0 ?! i0 [" I
[let i 0( N- o3 q8 d# n! n( P0 n
let sum-money 0
; k4 {1 @) p- vwhile[ i < people]
. ?3 Q7 t( R: \& }6 h3 I0 ]1 K[. i+ W* o6 c/ k) a6 V3 N
if( length (item i
! s( s! n% v3 U: H, y) S[trade-record-all] of customer) > 3 )
! I- W9 {) ]$ q. ~( Y6 e
[
8 k, H5 K) s1 E0 ~8 N( c, lset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); m, V1 X& i% d. G/ k
]
0 C- ~9 ]6 E9 {]
: k8 G1 P& ^8 j" |$ V4 M8 A! ulet j 0
0 B/ `+ q5 V4 I2 z; L6 d2 vlet note 0# Z+ w! e7 {' m9 J$ c" z' W
while[ j < people]) d* b8 f: ^: a4 j; L
[+ N, ?# d) a, Q: J3 g3 K
if( length (item i8 L5 ^4 N; D/ Z2 C3 I) A; E" y
[trade-record-all] of customer) > 3 )

1 K$ f& _; z0 A$ Y6 P[9 l3 c, I( \& b6 f1 a
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 V6 l2 ?/ x/ A3 }/ K[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ p5 X$ v! b$ w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; Y( f6 E* H# a  ~1 q/ B# ~]5 z8 {; h: W2 [2 y; Y
]
; ~7 E8 N; x' h7 v5 n7 i% p" Wset global-proportion note
) y" S7 q7 H) u5 q7 X]& c% `4 T, S' k- [$ J4 G$ `
end: L. w  \" Z7 |

8 p- I( ]* E; s# u* @; cto do-trade
/ d3 K& m8 Q3 Z: a" V& F( l;;
这个过程实际上是给双方作出评价的过程
! ~6 m! l" u' w& hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' d0 C% L% {7 `8 @# c5 N9 Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 |7 _5 K) s4 x/ ~set trade-record-current lput(timer) trade-record-current
6 T2 J5 |6 A0 t. m; v) _;;
评价时间
5 j1 R( c) m, x- u. c; h* [ask myself [
# _3 ?( N$ M) e6 A, Z+ q. Xupdate-local-reputation
; G+ u& i0 O! P; R, ~  \, b9 ]set trade-record-current lput([local-reputation] of myself) trade-record-current
7 D! K  N5 s8 V) G1 r5 f]
5 M; {# j8 o" [; ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 Y( N8 a  I$ _+ Z
;;
将此次交易的记录加入到trade-record-one
7 e! ~2 A6 l) O4 fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 L% ]" B8 I/ J/ J+ Qlet note (item 2 trade-record-current )% e" T) V7 H% T6 A
set trade-record-current
! E6 P1 s5 A) D( L(replace-item 2 trade-record-current (item 3 trade-record-current))
* Z1 f" z5 t/ k: K1 x
set trade-record-current; N, X" V2 C  k
(replace-item 3 trade-record-current note)- e- m5 A! M- I- ^

/ j( S/ n; c1 P; @" i+ {; M

) B1 R9 D: Y; A; \) m- ~ask customer [* R& n" B5 ~: g0 }: ^2 X  G- p
update-local-reputation
! ~! V, j! q6 w1 \set trade-record-current% E- [+ C. T8 A" B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 @8 y( v6 z, W: d/ M0 n]
' ~, i/ F8 [* V# q
. `# c  k7 h/ h/ m. q5 H
( A) T3 L  G9 h3 I) e. ]
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ U/ s" z% |" v
! I' W- {2 D9 {! g# V9 q- l( R
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" ]# P' `$ E: c2 c2 ?2 L
;;
将此次交易的记录加入到customertrade-record-all
' M2 s" O& q  s' f& q. a& Mend; N9 [( _1 Q( N. c1 {7 P9 D
8 k5 P, q% _, H: o- }, u8 T" E9 o' V
to update-local-reputation
) ^4 f9 T& \: Z0 e7 g! Wset [trade-record-one-len] of myself length [trade-record-one] of myself& ]$ I* Y- s: i) h9 ^1 `6 z2 O

0 D% Q& x- l5 i% d6 F. i5 Y2 D6 t' n1 H0 _% j
;;if [trade-record-one-len] of myself > 3

  q: h* B6 K# {0 zupdate-neighbor-total
' o2 _; h0 ^) ]% A( F;;
更新邻居节点的数目,在此进行
% P: j  D/ N/ d- Q/ G9 g- a$ ylet i 3$ P2 n) H( K: g) {
let sum-time 0
9 ~( Z" H6 e+ u  h" z$ R7 E, f  s' Uwhile[i < [trade-record-one-len] of myself]6 P3 M8 L; u4 P1 [, U" B7 q* i, W
[
1 }& E* X: l7 t' b* Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ B8 H0 G4 m* \$ }. p7 ]2 }! ~3 uset i
) w) Z4 Q+ J4 m8 a* T9 _8 y( i + 1)

- q! y, @$ Z. a" F]
7 B5 T  B, {! {+ t2 ~let j 3
: ]% G; z  H2 Y) `! }# V1 Klet sum-money 0
9 L# b$ j) m1 R$ I# t& P1 Swhile[j < [trade-record-one-len] of myself]
0 Q- o5 ?/ X$ t8 {1 h[* R9 |' C; Y) ~
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* z- K9 ?# x3 c1 N
set j/ z2 Q8 l% _1 |/ w. p: H" A8 S
( j + 1)

5 m6 X9 u7 F8 ^8 p' a5 u" I# ]]" Y+ K) \! i+ x2 ^$ Y& |/ L
let k 32 ^+ L+ ]5 `0 L6 H
let power 0+ ~, {. u: D% H. C: p$ I( v3 V! A
let local 0& G( {4 ?% {  N' ~8 d& R% B
while [k <[trade-record-one-len] of myself]
! V8 y! X" z+ o+ F[1 ^, _# ]& s# u  L: e7 P
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) 7 E# ^# _1 Q; Q! j" \2 ]& e/ U
set k (k + 1)
! a- s! C; c, `# E) Z% g]
; z9 Q/ T8 y/ c$ U  e+ D. Kset [local-reputation] of myself (local)2 S; f5 o1 ]0 k; V
end6 W; [8 U2 U! g. Y  n
% j) m4 p' E. N9 p( }3 Q
to update-neighbor-total
# K5 O$ r! {) j& \3 w4 A: v8 P/ Z4 O; F$ Y/ `) {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# I2 I, H& u  N  H  T

' z/ i# }" F2 s  `% J

: M5 g1 ~$ Y5 S5 u3 L5 Uend
* W8 ~( E* }3 N8 l9 m* K: C. T4 N, ^9 }3 d7 B
to update-credibility-ijl
  z' m7 e$ E3 Y3 B. `: q6 _& c$ l8 T% @$ E( ]; ^- o
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
# R& v, H; g% X, @. d0 Llet l 09 `( k# _+ Q. B0 s3 J' z
while[ l < people ]4 k4 f3 `* g( @" Q- q/ 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, _" n3 A+ x/ A+ a
[
4 Z& _% r; y& y1 Y- Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. |6 g  O4 G* y: l% R! c/ n% L8 k, gif (trade-record-one-j-l-len > 3)
& q6 w6 W5 M2 `' I6 S0 `3 ~[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# x. E: b. b4 D, G$ V
let i 3- [! Z/ ^9 H# H) v$ a% {. G
let sum-time 09 S! m  b+ A5 t' F3 w# S4 l% {6 {, P
while[i < trade-record-one-len]1 H8 ^1 t; R, t, M1 I
[
9 D, ~$ B3 q& i& V( [- hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* e1 x% w) b/ }; kset i6 V- ^5 O1 T4 R3 C7 g" l. K& N
( i + 1)

0 E' K" U9 B: ~7 Q3 ^& A; |]
7 K5 E1 u  {/ Zlet credibility-i-j-l 08 h7 N3 d1 z: G6 {9 F" ]5 r  z
;;i
评价(jjl的评价)$ W$ c8 p- j/ u
let j 31 a! A; v. Q: k# h% A
let k 4
+ g$ L( X8 ?# F& I% U% jwhile[j < trade-record-one-len]1 Q3 H  }% F# R2 U4 Q
[' W4 [6 c5 }  k+ |5 m' j7 g
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' D" [+ K( W7 z" i; ]: N
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)
+ a) O' S$ z4 e/ K2 q3 Sset j) P' O9 p7 {- j5 f1 v
( j + 1)
7 B; x2 G4 P, \' M' z8 N3 T
]
: |6 E) c7 c1 h  S2 |* q/ D% z7 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 D3 Y  s' }' h& Z" O' ]  K
' _1 T1 c# Y7 d8 U

: b+ z0 E) X4 p* E) x( zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 ?0 m, t# v2 m5 m
;;
及时更新il的评价质量的评价
& o5 M( M, N- p; R! Y' v) _" Sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% _$ v" a5 r5 m3 Q* R( rset l (l + 1)! z0 T, w& p* n& M; k
]
' Z9 _* I) U! ?& [+ send
- Q  E: [* x" H  r2 ^8 P
$ a9 S6 P, x' Zto update-credibility-list, Q* N. W) }! I' T
let i 0
" Y0 u& b7 f0 P5 s3 d" Vwhile[i < people]2 a% e* Q  P- E& S
[
3 b3 K6 W  s# B! \$ i7 ^9 g. glet j 0
- U4 a& _- r9 y3 \6 a1 r  Klet note 07 O8 i5 _% J- C( }
let k 04 X+ R) }) g6 j: m6 m* K5 z& r
;;
计作出过评价的邻居节点的数目
9 t& w' j% C: C. u0 z) swhile[j < people]
' G3 i) F2 s; U" b) r9 m' g/ I, {- M[
. f0 H5 c7 F7 t1 }: {if (item j( [credibility] of turtle (i + 1)) != -1)
% d6 m% H) X# X  c;;
判断是否给本turtle的评价质量做出过评价的节点. L' v- z- @" C8 N$ t: c
[set note (note + item j ([credibility]of turtle (i + 1)))
! G2 u  U$ N( X2 z;;*(exp (-(people - 2)))/(people - 2))]

: f  [! J( @( N, p9 ]set k (k + 1)& \8 H2 b$ A4 G, k4 l
]3 ?& c/ @& v3 n3 y
set j (j + 1). z5 \/ t/ w4 S9 z# s
]
; o8 P- r$ _% M8 p$ }set note (note *(exp (- (1 / k)))/ k)
* J2 v! v& i, y* q: hset credibility-list (replace-item i credibility-list note): o) L' M4 ?8 D' Q
set i (i + 1)
- z; |$ y8 V9 R8 d- l]
$ {9 w% C* l) Y6 j5 T2 r+ mend
7 \# C4 f5 B$ _8 ?
2 F  g( v. @: g) dto update-global-reputation-list
/ |2 y; m& c' W% m% tlet j 0
7 k$ v. i" w: _1 Xwhile[j < people]
! l2 N6 i, y7 }( u6 D8 @9 n[; h3 o& _/ |( W& O$ ^/ _4 Y: s
let new 0
& s0 M0 W% |% _3 O! e8 q;;
暂存新的一个全局声誉* L: W$ G  Y" \8 y0 {) _
let i 0+ v) W  i' a# c; D' q7 Y: N6 p# Y
let sum-money 0
3 J2 V8 I9 `, i9 ^& U$ ?let credibility-money 0
' S& e. _  f9 t' b- z9 ?( Xwhile [i < people]
7 S- ~- e2 l& G. _2 X  w+ v[
' C: z2 |0 _; u  I, Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 R2 s6 l, K1 m: A5 J0 S6 z+ Y, X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 B6 x! I0 D4 X1 ]/ \5 r$ Z
set i (i + 1)  \- d% h/ w/ G5 |4 H9 h, ?  t. I
]: z8 i$ q& e1 Y7 f' s
let k 00 i2 u5 |6 O( s9 ^# o8 {$ t
let new1 0
5 g! ?  t- g6 s) Nwhile [k < people]8 x# q# M0 K: `& d1 \6 ~( K
[9 w. ^) U6 w0 P7 j3 x5 |: E
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)4 h* Q) s7 [  m# }2 S4 Y6 p
set k (k + 1)
9 W4 P5 b5 ]$ M3 X2 \+ h! A$ F]# q& V/ u2 |/ @% p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 @) K' Z, X' m3 Z7 o
set global-reputation-list (replace-item j global-reputation-list new)
7 N# J3 F, X3 J+ s  l& g+ @; o' Oset j (j + 1)  i  l) T  s# t6 S0 _- p! o& R
]
7 }5 {' A: w$ q. P+ }, F7 {5 U% zend8 f; p, i# G) J6 ^

- D2 V  S1 \3 W" v5 v: K2 k$ Y, {' U& H  Q& e3 U2 @( z
6 z( X* b( J# [& {1 t0 S& q
to get-color) ^% _* J6 e) X, s

; l$ D, j1 g7 U6 E+ X* c( m$ bset color blue

$ q5 Z0 ?; P3 cend: E1 K  l) w$ K7 A8 E( w6 s

* K: E$ r, z# E4 l8 P5 ~to poll-class
( T% m6 x1 P) h9 h$ _end- p% i2 A, j+ h" y! H

+ p% v& w  v' K: O; a% u) ]to setup-plot1
  D$ R9 Q4 z9 h. g# ^$ H) o6 C) M8 |3 [# Z  j8 u/ R
set-current-plot "Trends-of-Local-reputation"

( B4 d, z' ?  X! D3 Z( A* ]
6 \5 Z+ I$ K9 v  ^. Gset-plot-x-range 0 xmax

) O. e+ m2 E, n; T- O2 I
3 s, z( U% m, i6 b. |/ gset-plot-y-range 0.0 ymax
* Y, ^1 b3 c4 r' v9 E* t
end, g2 S: B. V1 v8 U$ |

- [: s9 k( e7 t3 E3 I6 lto setup-plot2
. V9 o7 F6 ?& d/ }) H- @# b5 X7 z0 r0 i$ o  o. g, N2 W( E7 U
set-current-plot "Trends-of-global-reputation"

/ G, c, n9 r/ c" p; H8 C! d
8 J  k# N2 Y& g0 x# C' |- oset-plot-x-range 0 xmax
5 s; M5 J# s+ O' a! J

, A3 n1 \. B. P. Rset-plot-y-range 0.0 ymax
: W3 D5 V: G7 ]- D# P  E
end& n+ ^0 g4 p* P* w! L0 G$ O+ w

9 N- k* K3 i$ g1 K4 l! S5 ato setup-plot3  q1 B: D% V: e# n$ O5 _

. ~  J6 M8 M8 J( o) m0 ]set-current-plot "Trends-of-credibility"
; U2 N/ R3 ~' }- d/ }1 z6 ^0 h
. H3 Q) ~/ C. [1 o8 |+ c9 f6 K1 Q
set-plot-x-range 0 xmax

* O1 |6 ~4 Q5 I) n3 ~+ s; B9 s0 Z; G. h
set-plot-y-range 0.0 ymax
4 X5 k1 i* ~+ D: C- A
end  S1 \3 c+ ]# {9 M5 t2 _

# Z+ e. o* U& X9 ?0 Bto do-plots
4 Q2 u6 i& o& S* k; x# ~set-current-plot "Trends-of-Local-reputation"
2 a  _  A  R9 `7 Fset-current-plot-pen "Honest service"# D7 S3 g( c- y
end6 o! B% m, R4 P6 O9 L7 Z- i5 e8 H
$ x8 c$ V( ]% |! q+ W' [
[ 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.. X3 ^" T/ N; N; `& t
0 X5 r: I- l- P- \) m; O
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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