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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:: ]% N& e! |# B/ f; [8 I) F) k
to do-business 0 t( _; o+ G9 Y7 t) Y$ M& b
rt random 360' {/ g7 N+ D) _% G( J
fd 1
# L9 Z5 m2 m- u$ c) u; F8 X+ |; ~% H ifelse(other turtles-here != nobody)[- ]4 k1 W0 [) o5 [3 p
   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.. r2 h2 Z8 |: C8 ~# w0 B4 r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 l  |6 c  }6 L) s6 N: k4 k% v* y. G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& l" ~2 n% L5 R- I4 [   set [trade-record-one-len] of self length [trade-record-one] of self; d8 n  i% v7 Y. w9 F( k
   set trade-record-current( list (timer) (random money-upper-limit))" x) q" y; u- h1 ]2 @- A
0 g* t: M- _; ]; i+ j
问题的提示如下:
) j# G9 ~! A# y/ X
7 u# O7 N3 m$ M* |: n/ b6 S  ^error while turtle 50 running OF in procedure DO-BUSINESS
* `7 v; u, o' g) x4 x  called by procedure GO+ v& I+ S# t, K0 x9 \- K6 [! U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.: n/ [5 n3 @! k
(halted running of go)
1 @" W: C- C- w
$ k( h4 i# V) Q这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~. h" I3 A* m4 Y! C, X4 S- M
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
% E, c$ J* M& x8 l1 qglobals[6 \5 U4 k* a5 k; e2 m
xmax
2 L! w8 h  K" q* e4 n, @$ zymax
; O4 y9 e. Q+ i6 rglobal-reputation-list
6 V, W8 g2 Z. R& U7 v9 s) L6 X/ |- ?4 z6 ?9 |. c) W" c
;;
每一个turtle的全局声誉都存在此LIST) e% U! f/ ?* D: |
credibility-list
9 H& g. A( _% T* E" u! J0 g* B;;
每一个turtle的评价可信度
8 C9 u) s' I; M6 j' S3 z9 Ghonest-service! |# S4 z# b: @1 O$ n
unhonest-service
" d. I; p# s( W0 X$ Zoscillation! i  Z8 E/ |. U) R- X# @
rand-dynamic
* [6 h/ M+ t4 _4 w# e]1 o- Y7 ]! h& j7 M4 |) j* x. l7 T; K
( {8 J& w! S: x8 ^! J
turtles-own[7 j/ I/ U+ y& {5 i% y/ {( n
trade-record-all. f( A6 o6 I  t; X
;;a list of lists,
trade-record-one组成
# X: n! d; }/ Q2 V% Strade-record-one' G: }9 Q7 s& C$ @, m% T* T
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. \% _" V" B$ l$ B

- Y$ Q& x! _: R;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]: Z8 _" a) I- O$ Z7 M* q' `/ h
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]
. d8 c0 Z( ]5 A$ T: v/ Zcredibility-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+ W1 j8 o" \% m
neighbor-total& n: a/ @% \2 w6 r( n
;;
记录该turtle的邻居节点的数目
$ F3 {$ v2 C) R3 ?% _trade-time
" T7 s: w1 J( F) ?8 b# F; o1 @. I9 G;;
当前发生交易的turtle的交易时间; F2 B3 {) y% S- C9 B6 ?
appraise-give
& t& W4 `8 `& Q% r;;
当前发生交易时给出的评价
2 j7 E/ T+ A' K& v; Aappraise-receive
: s* w  G* _& ]7 h8 p1 I;;
当前发生交易时收到的评价, u& h9 s' H9 x
appraise-time# j$ B3 F" D3 H0 q7 H4 m
;;
当前发生交易时的评价时间# i+ r; C2 b! C* c% T+ H  o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉# L$ Q; k$ [  y  ~% h5 [
trade-times-total% k1 N0 ~, ]# }% ?7 ]7 \$ Q
;;
与当前turtle的交易总次数; C: U- l7 F% t$ x. r' K& o3 J* ?2 Z
trade-money-total
  h. ~- e9 P$ y  b* H( \' `  I;;
与当前turtle的交易总金额
8 p4 C9 d, N" F9 w' E' ~local-reputation
3 G8 x5 q- a4 R5 Bglobal-reputation
/ _9 V% ~. V: R/ Q, bcredibility
/ U$ j7 u2 s" G; M' p6 t6 u;;
评价可信度,每次交易后都需要更新
& c' R7 s1 i6 p/ U6 y/ J7 @$ ^credibility-all
$ y. q, [# k& H" }' d& 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5 d; V3 n) }( p' v2 c' T6 G$ U
3 i' w3 l5 J3 v- x; r
;;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' r' X- r# f# X6 F
credibility-one
2 _" a7 Z4 ?. C- r! q;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
) p. P/ ~1 W; Hglobal-proportion
: M7 P) p. f! X/ y8 Rcustomer5 I5 B  W3 _3 ?
customer-no
6 h" v2 i/ D" T8 F# {trust-ok. @$ p- x3 M: b! U0 C$ K0 @
trade-record-one-len;;trade-record-one的长度, O* A* x5 o! Y2 d: P1 D
]
" e- ^$ E. I4 ~) y. E# f1 b$ g' \6 H% o# Q) n$ }
;;setup procedure7 i4 \2 E4 N# X8 e

, w, W- t3 Q4 `  D0 b9 b* U. ^to setup
+ M% T3 L3 ~" P7 k! L. A" K& h& D1 }7 B; b1 q* I, w7 F2 U( h4 j
ca
: p% [; ?, m: X9 q* d

- s9 q7 T- a& b4 ninitialize-settings

; b7 H+ M: R( x( p' i/ e+ y, m% N5 k& l2 @/ q4 c
crt people [setup-turtles]

# f+ ?3 Z9 I: k
# j8 K2 s& x. i/ X5 Lreset-timer
" u7 H7 ^$ b0 g7 _1 Y
* u8 Q: q* ^9 K6 S, [7 y
poll-class

* U/ \: n. X: n0 M0 y/ V9 o. r! z3 `0 S
setup-plots
; J- U' y! U4 u6 m9 \* d
9 U( h( S) D9 e3 {, @
do-plots

" ~# \- B. r( O; kend: M9 i6 |  o0 [) s
+ n1 P! ?5 ~) l3 [: X
to initialize-settings7 y* O# G! X( D( D0 L

5 i  n6 t. @7 rset global-reputation-list []

9 J' a6 v" p0 M
4 X0 K' t( I$ D5 t1 @set credibility-list n-values people [0.5]
! u. f, k4 A' ?8 V; w' u) v
4 H% l) Z: n9 u) A
set honest-service 0
; G. @  U$ I# M) A
. ]+ c3 V; k0 a, F" [# {
set unhonest-service 0

. X" W7 u+ t: n' D* F. K+ N* k4 ]; {" i; b8 Z) G. \6 h
set oscillation 0

+ r/ e$ e7 A9 I9 o
, R! X3 h1 H; N* x- d8 wset rand-dynamic 0
9 n( e/ f. \  n
end- x/ Z6 Z8 e2 p  s

0 f( D$ Y* q! R0 V) e) H9 i/ G: zto setup-turtles
' z( C& d1 Y7 ]- U3 L" v) |set shape "person", d# ^. K! ?% K- e2 o
setxy random-xcor random-ycor" s( A/ T' _! X
set trade-record-one []
, s% j7 F' e2 t4 h
) \" K3 j& K) g( e/ r
set trade-record-all n-values people [(list (? + 1) 0 0)] ' X9 E$ I+ _1 R  |! W' }

& A# q; n' S- Q/ j5 \! Mset trade-record-current []4 O" Q: X. t' y7 g& n2 P2 \# Q  c
set credibility-receive []4 M; r: L" Z5 t: {0 X/ i! c
set local-reputation 0.56 C' S) y# k, p, w' u! K  S
set neighbor-total 07 D( X& U- _7 O" b; V" N! t! ^0 l
set trade-times-total 0
; D- w+ |/ z% z/ m, C" rset trade-money-total 0/ P" A. l' _# q
set customer nobody( F4 J# q4 r2 P( l1 ~9 x. T9 O  `
set credibility-all n-values people [creat-credibility]
) h- {  \( i' R2 P' gset credibility n-values people [-1]1 Z. J) |; q1 d# O& R, w. O
get-color; D5 q9 C: v+ [0 ?
7 s- P& ?! z9 B; C5 ~' U  e
end% |; U0 R  E$ o1 [9 Z) k) [( S
) _' b3 G. V' E
to-report creat-credibility! j8 }/ K9 b7 K; K, ?4 T
report n-values people [0.5]
- |7 u1 M7 h# ~! \7 y- iend& r, c- Q2 s/ W

+ N$ l2 a* Q& J$ o6 i% a0 J9 ^to setup-plots9 J* P4 r/ e: r9 b! x, a3 o
" U* ~; A$ F1 V* |, v* f
set xmax 30

- M& r$ C  R: j" X: f% j
, a( b4 Q8 F. M$ h# o  `: H2 Aset ymax 1.0

) T4 ]+ O$ l: B7 a* W7 @) d' L  @% ~  z+ s6 T6 ]* w& X
clear-all-plots

+ a; m0 o- }8 M* H4 O
1 O) H+ G) ~8 K7 ^6 J. ysetup-plot1

& M( q0 F" s% O
4 g& Z+ X0 l, [! F) wsetup-plot2

6 z5 F3 @6 b9 ^
% c6 i1 H9 D( o; f- nsetup-plot3
2 l7 L8 P( S' c8 q
end
0 a# D% U. U0 H) G5 ]
6 P' |+ v3 F8 F" Y" [;;run time procedures
# D1 z/ S9 A6 f% z8 Z/ q
; u3 V7 K3 L) o- O& p' z" T8 U- H% Ato go
: U% d+ q: S4 o) |0 i
- C$ z6 ]3 P8 j! e" o6 C# Task turtles [do-business]

6 x5 q' T2 k7 O) Q; n. s; fend; G) K, M3 R' x' z
( D) f$ {8 d6 m) M( P* |9 V
to do-business
& d2 r  Q& F  M- A: ^

$ k* s& D* t3 a% ^* [: n! O
$ M, G6 q' i) `, o7 trt random 360
, R# N2 y' F; {- [8 j* L
. N3 Z" z( `) d4 ^. J; r, @4 I
fd 1

' k! A$ }: Z6 @/ e, ]: b+ `
! [" G+ i. \' n" l) G/ \0 `ifelse(other turtles-here != nobody)[
- \# {# \$ H9 n) V8 F6 q; J# j% U5 U
# g' j' B7 O0 ^6 y
set customer one-of other turtles-here
9 N; U/ @& c1 P) w4 n+ B: S

- m& n8 y  P' A* _;; set [customer] of customer myself
: j8 l' f) E+ k- L1 t1 r2 @
* V7 S4 Q/ W( n  g9 a2 x
set [trade-record-one] of self item (([who] of customer) - 1)/ X- C, o7 k$ H( r2 H
[trade-record-all]of self2 \2 g# b  ~  ~. T) x3 z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# T2 o7 R, m4 Y5 G& x

  j. m6 _9 S: C7 I! ~set [trade-record-one] of customer item (([who] of self) - 1)
% ^" ]" a8 ]  ?7 q& I[trade-record-all]of customer
6 Y' K) f2 i+ j. f% V$ N

' B$ q9 {! ]1 h/ |% oset [trade-record-one-len] of self length [trade-record-one] of self

9 ?( Z# {+ O. V' u8 D% \
) E+ ~2 R8 w# M, Z. I' s7 y4 Hset trade-record-current( list (timer) (random money-upper-limit))

8 y0 ]/ |) Z1 x) L# Z6 w# |. S9 l5 u9 g! u
ask self [do-trust]
& E" _( l& m& W. [9 B;;
先求ij的信任度/ y5 A, X7 N0 @! L1 z, o1 W5 P

3 y" V) B; i: \; f9 `$ S) t  Fif ([trust-ok] of self)$ c4 x' c1 v7 @  e
;;
根据ij的信任度来决定是否与j进行交易[1 s9 N  M$ J. S
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 y- l( w2 w0 N9 x  i* |8 H, e* |% n, B$ y
[

+ c5 w1 B5 {3 O6 h% {+ j' R2 b! z" g& W* ~9 V
do-trade
! O  M- H8 H; [

) c% U6 Z5 `7 X6 L3 q$ Bupdate-credibility-ijl

/ c4 y; k/ Z& \1 j
; ^. i, R, I9 k; `. Q$ pupdate-credibility-list
! B5 L3 c! l3 g# k$ C' q1 Q

7 n" n: n$ s5 G1 C
$ S8 m( @5 e4 l0 n. qupdate-global-reputation-list

, Q9 U+ ^0 X- r, j' R
6 i, S1 m- R0 L1 Kpoll-class
8 f  U6 {- O# m( V% k

' R" X# V4 u  @& @7 n; Z. L+ V) Nget-color
# i5 }9 ?1 d9 {4 e6 K( P  w' g

$ m# g! n  [$ I3 ]  w  x]]) O) d" ^6 a$ P; G* q

  \7 e% ?5 z) L2 }8 S;;
如果所得的信任度满足条件,则进行交易
' k6 L& N- i/ ?& M7 K  m9 a6 s
  U7 N8 Z, s8 V; m[
: \' z  j5 O5 ~" b1 ]( X% U
+ x% S, P) M' i/ k, `
rt random 360
* a' n; J+ r9 D; y) O
0 J* R4 b1 e1 f) y3 Z- R/ ~
fd 1

, t1 c3 T" C% G) S  ^- j6 @$ {' P  V8 I( X; m& q
]
9 k0 g. x& |3 b5 t

. A  ?5 M2 r, ]! A" f5 fend
- `' {0 v+ S9 a5 s5 X

9 a- h2 y& |- [$ Y1 R: I) rto do-trust
0 f2 A7 I* t- a3 R+ v# jset trust-ok False
# ^& Y3 ^1 m6 B, B0 J, \# O$ Y; f( q4 \3 `9 k+ G. j& ]4 P

: B- _: t+ g9 B  G: Flet max-trade-times 0: ~* u8 k( h& V' T, ?
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% p! Q  ~( q7 ?let max-trade-money 0/ n  B9 }  t7 _/ `( X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! M8 _4 ]8 ^+ U- ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% I( w, [4 a" I& `+ m) @+ L5 W
) Q( v' p3 N! L; ]; x

/ e  T' D7 `: Q% Bget-global-proportion
% T( G# U& }. r0 F" q8 tlet trust-value
: V8 D, E9 c! O/ p6 P- @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)
; U; |/ P3 |. X
if(trust-value > trade-trust-value)
2 I% B' m, M8 E[set trust-ok true]( B- O3 p$ k/ P  t
end$ c) H3 _0 o& t1 B" T
) M! S$ r$ K" b1 ]( P
to get-global-proportion
; c* g+ T. O1 @- Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. G: P4 f! _6 D  a. c[set global-proportion 0]9 \" ?8 q/ c4 w. q0 }- E: `
[let i 09 [# E. L/ W, w. o
let sum-money 0
( z2 \, I9 S' v9 v5 Jwhile[ i < people]! l+ z. z) i, M2 z
[- s6 g" P8 g0 Q
if( length (item i3 ]9 R, g2 n( S4 K- P, Q7 M
[trade-record-all] of customer) > 3 )

, P- M) S, C9 [1 G4 y% @[
: C/ A0 A* `/ i2 ~: v5 Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& s/ ^3 i' g0 v" ]
]
! A/ m: Q( ?1 ?; ~]
& u% v0 R9 a8 ?2 l5 ~/ N, L0 |let j 0
* c0 |0 a: B$ T; b: u' \let note 0
1 o2 Y. Y9 Y; i. q8 W- X0 Q8 xwhile[ j < people]* i9 W  n, W* o/ \
[7 O- ^- Q7 Y; q5 p/ ?- Q( f
if( length (item i' t: F" e  f7 ?
[trade-record-all] of customer) > 3 )

7 i" U/ h# P  p# C9 a9 P[
- z7 w! a0 w6 }' f' ?7 oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 o4 A7 |' `/ b; c, |( p( g/ P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& {9 Y2 e) d, y: z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. _4 n& t' Z$ _! t( J1 W]
) f3 R- G% [, X; z' T1 U' P]
( \7 {1 N0 S  U; G+ Hset global-proportion note/ e& E; j. R; u) P- ~! J
]
0 w% v! Q+ y7 Q9 z, o; A3 Z* Zend5 \' r# ?( T% J  B4 f

$ N4 q+ n" U% I& v6 G% Yto do-trade0 O8 `2 r1 s- c, P4 R
;;
这个过程实际上是给双方作出评价的过程
4 r6 O  Q0 I1 L5 H  b& P8 I1 {  gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 x$ u9 T5 I4 r/ u" E% l) ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, v: n- W4 b. w) _5 b, K
set trade-record-current lput(timer) trade-record-current
: W$ L. p! P- ~) Z# L& T, ]: E;;
评价时间
( M9 r9 ~( d. I& ?$ {  U0 Gask myself [& @0 j9 `6 C$ o/ v- o
update-local-reputation/ Y7 q0 F! M2 b1 k" p
set trade-record-current lput([local-reputation] of myself) trade-record-current4 I% Z7 ^9 M1 `/ Q
]8 @% B  f4 P; o, P$ c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) _7 C7 A* T2 ]# ?- T
;;
将此次交易的记录加入到trade-record-one
! z8 y# e% F' z; aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ v# s0 ^2 E" J' qlet note (item 2 trade-record-current )1 o& j8 Q" t9 D7 n! J; d. P
set trade-record-current# ~* Z9 ~& p1 M9 @
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 ~8 B8 F% E  [6 y$ J' hset trade-record-current
8 q. v! c  s' [8 `* P% H) x6 W(replace-item 3 trade-record-current note)
3 U7 \) \0 Y5 o, E% o
; G3 u+ a' [  c9 ?) c& J
8 f. {! l; N$ B" @
ask customer [
6 C/ T7 [  Z' X+ b% F- I1 E, C6 V5 ~update-local-reputation# j! I6 N7 D- B0 p$ @
set trade-record-current& }# s" Q! q5 J  ?$ Y3 _2 x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ g) V. `+ e( c( o]+ Y  F) E4 ^) |, k2 a, W
& L8 g1 f, ^. w: i4 i9 m

- F& ^7 p8 O; [& o  Jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: e+ U3 k; x5 L) a
2 V* G% g* g! X7 c9 B3 ?
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( J: L6 l$ W2 g  M7 O8 ^;;
将此次交易的记录加入到customertrade-record-all
. J# j' D0 Y! o; ?, i9 tend6 ~6 E: [* H( Q2 e/ p$ L

5 r- n5 g# F* B/ K( g: D; B) Vto update-local-reputation: [3 X: j* I* D1 J' |
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 n  K" d# g4 n) j& t9 s- |2 M) S: }

/ v" U6 c1 T, w0 A;;if [trade-record-one-len] of myself > 3

5 `% N* T. r+ b  dupdate-neighbor-total
" w' A" F2 {0 e/ A. n;;
更新邻居节点的数目,在此进行3 t( f* n4 q$ K9 [7 z
let i 3
7 Z+ B8 m  i: u  S, llet sum-time 0
: c, m  k8 }4 ewhile[i < [trade-record-one-len] of myself]
+ H/ H9 \' }- H4 X# ?; ^7 c7 I/ P[
/ O) R" o) b5 j, jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ V$ \$ o% [2 y! U3 Tset i/ {6 T) _- T0 E
( i + 1)

7 _+ C$ o. J1 H  n( b0 |]0 X5 e# ^( W8 v! j3 K/ S
let j 3
! ?4 u& g) ]; d5 E: flet sum-money 0
: c9 B( |. G/ }4 w3 s) mwhile[j < [trade-record-one-len] of myself]9 y) z) @5 Y# W2 B% l* b5 r5 h
[0 e7 g5 }" D" D/ r  K" h
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)+ q2 k0 r. m0 [: G6 ?8 G0 Q. O* v
set j
& n# M: R8 h' D+ C1 v; e( j + 1)
" q) d5 S5 u8 {; l8 Z- L) \
]
& g7 n/ [* ?8 d% T( r. ilet k 34 u# m; E% w+ ?% d* g
let power 03 O  v0 b4 w. l+ }: Q1 G& h
let local 09 f5 G4 H/ `% K/ q- O7 T
while [k <[trade-record-one-len] of myself]
  I8 {1 I. `0 c3 i% ~- }9 A[8 m  z, `7 z  E% M9 @, I. z/ D$ T
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)
' q4 p: K4 u5 o) x% Y) Nset k (k + 1)! n& q( A0 f( O) d
]
# B- H$ E9 ^- l" P+ b3 P/ X5 k2 _set [local-reputation] of myself (local), H$ h" p: q5 \) y3 _9 N5 X
end- l" i& ?( Q7 z
7 A- [$ ?0 N, ^- i/ Z$ ]/ V
to update-neighbor-total
, _& N& E* ^* h$ W( K. w6 D
9 Y  d' ?# K! c8 gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ m) O: j( L/ o/ I3 |$ V% _

) J0 m# Y) L5 z+ x* j# f
' ?+ i7 {5 Q1 f9 V
end
3 j# j# G2 P( `6 X
2 Q5 V+ b" \, h" Cto update-credibility-ijl # j, n+ T% ]$ K$ D5 v0 p4 x% G

6 m- l- L, ^8 c' 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。
; r. [( L, [, ]% z2 l/ ulet l 0
5 X1 z& k/ f. E0 f5 Rwhile[ l < people ]- h% ?, P$ @! C& q) w, t
;;
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 S% N; P, }! H2 T5 Z# o! C
[
2 }& Q4 r/ g8 W: glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  u- N3 Z8 A" }4 {' W4 U
if (trade-record-one-j-l-len > 3)3 T8 M+ ^+ _. W3 j: n
[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
4 L- B. B" X+ A  ~* o+ p3 Mlet i 30 m+ l( i. n# X& o! _" E. r. ]
let sum-time 0
5 K6 x  O+ h; I3 y* W/ Bwhile[i < trade-record-one-len]
2 K' A0 l* g' P5 `: t" `0 E[" [- b9 T( h2 T3 H8 h: I: H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 r) _$ {, A5 o4 [. g5 a# ]2 [
set i' i- S' e6 j# ]; z9 ]2 x/ n) x4 `9 y+ V" V
( i + 1)
' G9 J- F" _" Z: g' F
]2 l+ |4 G( F/ W" e* X$ t1 k0 Q! I/ T
let credibility-i-j-l 0: a1 f! f& j5 X- L, y  J+ G# T  C
;;i
评价(jjl的评价)5 b  n1 _" ^. j5 h
let j 31 e3 P, X" F0 m5 U) e, o
let k 4# M+ D- }9 T' N
while[j < trade-record-one-len]: H9 h7 A( V8 H0 O1 t# x3 L( P$ x
[
: X0 n% _. d+ H3 x; ^. Fwhile [((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; Z+ q, }! }: f; P6 e4 w5 s( R% @
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)
: F0 p4 b. t7 e" I1 R- Qset j
0 o# z. q* |& M$ a( j + 1)

  f  C- |8 y5 ^* K' J, i* I2 X]$ j) Y5 K1 `3 \  K+ t
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 ))
* v( v3 b' E' w
! Y- p) ]6 {1 X! Y6 S
8 T* y5 s9 s- j. ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): u) Z: u: T3 p- Q
;;
及时更新il的评价质量的评价1 H0 d# }5 r4 a+ F$ k# q" ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- Z, m& R* \* k# i5 w: e! J' A
set l (l + 1)) n- D' [. `4 K8 h
]3 F0 b$ l( `! ^* V4 \4 q
end6 ]) N+ w3 m/ C  c9 n

/ K, n* r$ g" @0 A4 Vto update-credibility-list2 J+ `  u7 p! G# r' l4 j
let i 07 m" @6 C* y- ?2 }# a+ b  U
while[i < people]3 K* M( F( Y5 [) w$ r
[
' m5 I( I% H9 ]1 o! xlet j 01 z& g( P$ }% R9 I: A) A$ Q8 F
let note 0/ a, b3 k) H2 ?9 s
let k 0. |. c+ ?1 h& w/ x7 t
;;
计作出过评价的邻居节点的数目5 Q5 b5 |# i9 M/ x/ x- y2 p
while[j < people]# ~  n" [6 q( m7 T. k3 r4 Z
[5 k1 d- j- ~+ O3 [8 R/ i
if (item j( [credibility] of turtle (i + 1)) != -1)- F  O0 ?/ U, x) W2 t, J4 R! a
;;
判断是否给本turtle的评价质量做出过评价的节点# _& B) |, L! D3 ?) U. |4 Y! ?% W
[set note (note + item j ([credibility]of turtle (i + 1)))* d/ P0 Z& ~# R) e0 A' r
;;*(exp (-(people - 2)))/(people - 2))]
7 b6 {0 x/ k* R
set k (k + 1)
" I. a1 O- B; W% [' E9 n5 i0 q( q& |]
1 ?: {$ O5 A# U: o0 ]set j (j + 1)
  a) _. f$ x% ~. C8 A7 n( K! l- _]) c+ N8 U) P9 H5 g; O
set note (note *(exp (- (1 / k)))/ k)
# t7 x& I6 j& p. y2 Rset credibility-list (replace-item i credibility-list note)- e( w( }& g, d- s8 F
set i (i + 1)
6 L( c; n: R8 g7 L]
# q4 r7 x+ E* Kend$ E- A. r& H" d3 p9 e
9 |# T# M  b) Y$ b$ p# E
to update-global-reputation-list0 k4 e; `8 r. ?6 D8 r
let j 0* h4 S( R: S% }/ c) D+ \
while[j < people]+ T/ E; I( C, w% |
[
( e3 F  I' ^7 P9 w: Elet new 09 V5 B8 J" G/ G  g3 @2 N
;;
暂存新的一个全局声誉/ a4 v$ b5 n) z1 h3 F
let i 0
8 U' K- ?% E, P4 X7 O2 X7 w8 alet sum-money 0
+ Y9 @8 T/ [$ [! K% L. Z# e" ulet credibility-money 0) h9 G0 k' R- k7 P- k+ G6 \3 n: \
while [i < people]' e: ]% k' k% o3 Z9 {2 E4 B
[- t. X: O2 w, c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& v3 X. ]2 u' R' {: x+ b+ D, V0 z$ _
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 p; U, e% S% u- lset i (i + 1)( W& }, i9 B7 ^
]! \$ i: B% ]1 o/ G% ]/ E; d
let k 0
; u+ X  L7 b: y( w  w7 C2 L2 llet new1 04 Z: p" L  R1 o6 e8 @+ t
while [k < people]9 ~+ F& Y1 i7 B
[) @, P' R/ P" v' J0 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)
% L# l" _2 O/ k6 L  ^set k (k + 1)
) X) }8 h* U* D3 z% Y; C( ], q9 _]$ ]! g5 j, f! v0 d% ^" s, z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  P0 R/ s' |# Y' d6 I, Q% t8 U% i0 Yset global-reputation-list (replace-item j global-reputation-list new)2 N: l( r5 ~1 e6 ?- D
set j (j + 1)
' d  j$ U% N1 F8 q/ F]& E8 Z$ a9 g) _7 \$ d6 U
end
; Y2 c4 y* i6 [+ T& @/ D% l# H7 q4 {% R! ?  ~* d0 ^( Z

( i' \, G& A  u4 r
( j, k$ V# _/ e% `) V2 @to get-color
9 N/ h, J& }. e% H' Y% x- @$ O+ V
set color blue

4 V0 T, u" f0 Nend
  t3 ]# e. n( V/ A4 P4 K" x' `) Z% N  P, k4 t/ M$ N
to poll-class
8 k) j( d# ?! _0 m. b- ~end+ i: W0 l' X/ S8 T3 S

6 n+ m$ s" P3 tto setup-plot1
* i& L2 f+ p3 b' P" v0 }/ ~- v+ u  t( t
set-current-plot "Trends-of-Local-reputation"

0 R% B; K! c0 D0 Y
: b- _3 Q4 g$ d# y: ~set-plot-x-range 0 xmax
( p" C; b% T1 Q/ x* ~' }
  T- ^' V  r6 K$ l5 A
set-plot-y-range 0.0 ymax
# O" \# t  n$ O2 N) p
end
! h2 Z$ ]1 M- [# {3 W/ o9 c* o0 w% @3 y3 w5 P/ L' W4 [9 s
to setup-plot2, ?0 f; Y3 o4 O! o3 A) O' ~

; K2 k. \0 S* g. Sset-current-plot "Trends-of-global-reputation"

. G4 {& W: c0 x( n  M, t( w! Y# O: w( \( p6 X- V
set-plot-x-range 0 xmax
. X* k% L2 j  H% ?
8 X1 G/ X8 H+ R$ A
set-plot-y-range 0.0 ymax

4 U0 L& j! W" z5 K) I. H1 xend
/ V& \! _2 S9 c% [' V3 p8 ], F" f6 s7 Z* U* s1 l5 g) I/ j6 y1 P+ E
to setup-plot39 ^. e1 b% {3 e9 L' i

; X; v; \  e. ?3 B2 `set-current-plot "Trends-of-credibility"

, {- K" ^+ \, c. }) D
$ Z! T9 B) ~2 S" I& R, xset-plot-x-range 0 xmax
' G( O' f" C2 ~- ?9 i: f
) D: ^5 `9 L3 a; |
set-plot-y-range 0.0 ymax

9 i' a; u) l2 n* I3 r! T0 j+ I% Vend
; p9 v: ~6 q2 D4 F$ {6 d
2 r1 j5 A+ g1 Pto do-plots
# j' ~; W2 q+ e. [. sset-current-plot "Trends-of-Local-reputation"
) P5 n) B0 S9 U+ Kset-current-plot-pen "Honest service"
' o' l* W1 U# O6 N1 x, r. y6 e+ Eend
4 X& |4 u9 Q* d  G! e' _6 o- T4 {2 z% C
[ 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.  }! r+ X3 [  z, _* u" n
% g7 H1 n9 d$ D. V6 j* \
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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