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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:1 G9 ]! O  G7 _* {; M  r2 a
to do-business
( V- K! D+ C. {: M" g rt random 360
9 R4 `$ w3 X' e% Q8 O( v0 N fd 1' Z8 P& f. U2 K: A5 F# G
ifelse(other turtles-here != nobody)[
9 @& p7 s( E' E" T# h6 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.
+ {2 U2 H, x5 [1 y# x0 ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 p. Z: P) j9 M/ W/ P3 {+ f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; _* \" u" @& A; C7 w1 T' ~   set [trade-record-one-len] of self length [trade-record-one] of self9 g' g. ~4 h, M3 ^" I; D% X" @7 E: h
   set trade-record-current( list (timer) (random money-upper-limit))
0 `, F( \2 o- @5 Y$ z: [, Y3 W( F0 G
问题的提示如下:
* P. W) f3 W1 f1 {, w( V
" P, I; @- @; f+ l7 B4 Ierror while turtle 50 running OF in procedure DO-BUSINESS/ D- O9 f( p; S& ]/ h, A# g, m' w' I
  called by procedure GO
/ |9 |; ^% c+ f" sOF expected input to be a turtle agentset or turtle but got NOBODY instead.; d. g7 S# ^( |; |
(halted running of go)
- e8 P' ~# R+ [! C9 `4 p# G) x* _  h
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 }* t' ^& k. s2 ?/ W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
$ F0 s( I7 A7 w' a* H& P: Yglobals[
  P* t2 ~4 q; Sxmax  Q( A0 l3 }8 p& T& K1 v' E
ymax3 g! ]  @, _$ V+ R
global-reputation-list! X, s) O; b0 t4 r

9 j, A0 c/ W$ S  e+ M) r;;
每一个turtle的全局声誉都存在此LIST0 Y7 S4 x# O) }. Q6 ?- ^4 T
credibility-list6 X' x! q+ Z  b1 C  _
;;
每一个turtle的评价可信度6 T& x4 I2 j$ ]7 q3 A
honest-service/ P& r! E5 h& c8 o5 z- E7 t- s
unhonest-service, n' W/ d' R" d7 ~7 l2 O
oscillation: O4 r. F" A% q& R. \: V4 O2 p
rand-dynamic
; W6 O7 o) n) G# c]  C1 L' h* C4 L5 [# F, ]: y& y

9 k& W. I" \1 @. g8 o% Lturtles-own[
; B5 {7 _7 w  }( g5 b- Ltrade-record-all
* b; B1 Q$ m+ |8 O  J;;a list of lists,
trade-record-one组成) P4 J( Y  y9 N3 b3 k8 c* y" v( a
trade-record-one
& d, n6 P1 B: W: U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 j5 W& t' ]& @9 O
+ r. [' G4 w/ o  G( k
;;[
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]]. }, e5 E0 x5 h1 @8 e' @: W2 E
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: D) E! T' S8 e6 d0 K
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% s" `5 |1 u4 ?+ w6 O0 U; p
neighbor-total" b- q+ _( D% M
;;
记录该turtle的邻居节点的数目9 `+ R3 M3 Z  n& {3 j9 B% a. W
trade-time  o/ G6 ?& J; m& L8 T; ]
;;
当前发生交易的turtle的交易时间
8 h% N) M7 d" m5 Z6 jappraise-give8 k: M. c/ f1 V1 q7 i3 Z
;;
当前发生交易时给出的评价
$ h* m  m" a+ j" Zappraise-receive
( W2 T: e9 s! Q' i;;
当前发生交易时收到的评价
, x: _' }- r+ c& Iappraise-time
* [0 \% R6 r& R;;
当前发生交易时的评价时间9 ]( |/ x" q8 ^% P. e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 o) d0 Y. k6 ctrade-times-total
; p+ ^' S' Z" J6 w;;
与当前turtle的交易总次数
8 d* X( D4 a9 P7 Y* ]5 ^+ s. T0 etrade-money-total/ z8 }: L$ f8 F3 S$ E8 [
;;
与当前turtle的交易总金额
& |# y; p3 l$ T$ ulocal-reputation
, j# \8 F, {. X0 A8 |global-reputation
; }. |; V5 E' y+ t7 p. V( rcredibility
, x4 q2 ~5 U( ^;;
评价可信度,每次交易后都需要更新
, @. L# L. w# }) w5 D4 R$ Mcredibility-all* P/ ~9 a& d1 F
;;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
8 t% r# D) a( \: e2 r) n( a" f8 n0 T: Z; w' Q1 b2 y
;;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: b7 t/ mcredibility-one2 K9 b3 A& Q. n
;;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 M# E7 J4 V5 w2 Y/ w3 I1 Xglobal-proportion
7 R. |1 s" w6 x) }9 pcustomer; A# k9 y+ I; D# Z1 n- O
customer-no0 ~+ D1 l: j0 l' x
trust-ok
( M6 a" {0 Q) s0 Ytrade-record-one-len;;trade-record-one的长度) s4 g' p; Z% }7 w
]
8 w* D( `' r. {( a- \& ^$ k- ]$ d8 x" h8 ]1 [: l) M$ d7 N2 q* L. L
;;setup procedure
- G& o9 u# X/ @( _+ H. c8 ?- ], [" c: l" T  X6 N) ^- I% ~/ G
to setup
8 a+ H. R/ d4 _8 T& j
- v" D+ H& _+ v, l& Wca

- D  e- b+ b& d. R/ `8 }3 {# U+ E( x3 Q: \4 r
initialize-settings

* \( G0 \$ w! x+ k! A' d; j
( ~* o: K) D4 i$ }- ]! u) y; zcrt people [setup-turtles]

1 n1 X$ i% O* v  _. a3 ?- b. }+ v& @* _/ }" J9 ~8 j
reset-timer
/ `1 @! K) p# o. {
1 b9 ~- K& e. i- B4 T
poll-class
' ^2 B; }- b/ A6 O6 A9 }

8 V! T! H/ F) W5 _4 a" Asetup-plots

2 N  |$ K6 G1 |1 i) C3 ]
: h& M4 d+ K2 m: z% l% L0 Cdo-plots
4 A' k1 G( T; o9 j5 ]
end# a8 u  K# ^8 x# |
; r' _( j& a+ N9 M5 z: n0 c
to initialize-settings: T% M2 b) f6 Q+ c) W; ~6 A* j& x

4 v, q1 A1 i( T7 }7 `6 {set global-reputation-list []
* ^! v' r% T6 u  Z, V) N+ @1 u

  K9 Y3 v9 s: }* eset credibility-list n-values people [0.5]

% H9 ^' X/ K) B0 Y* I
$ n; h7 ~( N4 v0 @: _set honest-service 0

: n7 _( r2 v! Y; m: p* T& w! G9 t6 @& i* h, P7 z/ w, m8 g* B7 v7 M
set unhonest-service 0

5 b3 D8 I, j( p3 @; Y/ s
. Q! g( R6 g3 G  q2 A7 T1 Kset oscillation 0

2 N6 ^& {: U. f+ m8 Q) Q3 ~" l" H
set rand-dynamic 0

7 f) g# ^8 O# a0 K: b$ V# u* n& Mend
# g' N  m8 ^; ^
! |7 c  d8 U( g7 k' W2 eto setup-turtles + ?: k0 U6 h3 x5 E" [3 r4 \7 E
set shape "person"* J4 _0 d. a) O! ]$ _; m& l& f
setxy random-xcor random-ycor
# Y( c/ D8 [( b& R- r2 b% A" eset trade-record-one []
; M7 M4 B; u3 N( `
6 S. u; U9 X4 s; Z
set trade-record-all n-values people [(list (? + 1) 0 0)] ) m: `8 X' Q4 V* e6 o$ g& P7 b! F

5 B+ ~- Z  h2 m  Q0 S8 Oset trade-record-current []
* A2 h( K+ e6 \+ l2 H4 g2 g' uset credibility-receive []+ p" _8 i( X# i2 j4 s
set local-reputation 0.5: K/ L  I; A, j5 X( ~
set neighbor-total 0
- G% l& d2 ~8 y) W" @2 O9 [set trade-times-total 0
: [' a: c) P; |2 Q9 Sset trade-money-total 02 V. I0 ~$ Y* m( m1 t  `
set customer nobody( P1 u% h) x/ K2 Y$ M. K! D0 ]
set credibility-all n-values people [creat-credibility]
; _! _5 J* k# bset credibility n-values people [-1], M5 e  A2 N( m% B! T0 i$ @
get-color
3 n  S) p* f! w+ q& C9 I

" R' G: n1 y& w$ s6 F2 s! T, P5 zend
' e& k* u0 [' M' s2 N. I& f6 g$ x/ A  v3 m) c0 a3 X9 U* O
to-report creat-credibility
) Y" P8 z1 |2 Z8 J* P4 i5 B9 xreport n-values people [0.5]
, }7 j: ^) r8 Hend- }% n9 p* j- r* H
* v7 E  f$ E8 V9 @. [  D
to setup-plots3 C( q. k- b2 L1 A; k9 z# O  I, e  A3 P
$ v6 k0 }. G2 L# l
set xmax 30
0 v6 y. _4 c3 a- c

7 q  S8 W; I2 i0 y/ dset ymax 1.0

$ |' c/ Q! v& R1 t3 {) s* d, o6 g7 J/ E& p* @+ t% t
clear-all-plots
, ~" V" d, o" B% C
. u* s- i4 ~! ?% Y6 g+ U
setup-plot1
! N) X6 _* A0 g% o( \/ s. X9 F  D
. U6 v+ q8 n* R; T! o; I
setup-plot2
) `3 M+ G; G' l  h/ G1 j3 b
6 l# }( e1 c- F& ^# {/ w
setup-plot3

" \! h( S' S7 Nend
, \0 N. n" p) B4 J3 \0 H1 |
. R1 T# ^2 |+ N;;run time procedures9 g% m2 b" a9 A! i

3 G2 ]6 k9 C) v; Hto go( i* Q& j8 Z- Q
& y0 o  @: j7 }+ L+ G- {1 s! P
ask turtles [do-business]
( m5 T* T$ h  l. _8 r. i
end$ E0 S3 a% e' j( R# R* G" o
& V8 A: x2 _( P8 R2 l
to do-business 9 b6 {7 t# O. l( d1 Q

; B  t. b# |( r# y( s7 g9 ]; S" g9 Q! I' S  \$ I( o
rt random 360
0 O, T7 k+ `8 ~! d

0 X4 P7 {. f" S2 `( Y; Wfd 1
/ c# _( S5 {$ S8 {

9 r4 g; X! B9 `* \' vifelse(other turtles-here != nobody)[
2 E2 \3 W% w, N5 t& P) e

. [$ ^6 ~7 {( c) [, Zset customer one-of other turtles-here

2 @! t6 x6 s! e; Z. g2 d& S: Z7 \$ x) n  l5 X( E
;; set [customer] of customer myself
  Y& o  c7 `2 {7 h- [' b

* k- m: G/ _+ mset [trade-record-one] of self item (([who] of customer) - 1)+ J; N2 H8 E) n1 H6 [9 [/ M* y3 Z4 Y
[trade-record-all]of self
8 R2 b2 v# ?! H# `5 ]% X; f) S# l) `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& U  X, x) J6 k; U. I  r5 ]/ R
set [trade-record-one] of customer item (([who] of self) - 1)
* x. [7 |7 X7 B7 _3 k& `5 U[trade-record-all]of customer
. P' m0 Z: [' o6 d4 O- K( F

7 k* W" N) {5 c' wset [trade-record-one-len] of self length [trade-record-one] of self
) V; [8 L; W" g& k4 t) H+ x  n0 [
8 J( O% S1 J$ R9 r3 F( c7 ~% {* {
set trade-record-current( list (timer) (random money-upper-limit))

  F! M9 y, J- c1 ~5 |. A0 @) p  l2 z6 x: I3 m+ y
ask self [do-trust]
: b1 b5 a5 x" g+ v; i;;
先求ij的信任度2 A9 M/ i( r, [' B/ M( m
% n5 n& P* X4 Z6 m; z3 L! w: ]
if ([trust-ok] of self)
# O% s6 W' s' V  e5 M! b0 D0 \;;
根据ij的信任度来决定是否与j进行交易[' u9 y  O* b$ K. |7 h5 F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# S  F  O; ?, \5 z4 q# T+ G. ^6 Q/ r

. l, W2 n6 Z: P$ M' ~[
7 p+ N2 L5 Y+ b% K' Z( ^2 V

7 ]1 U3 ^9 |/ H, W+ A# q! edo-trade

/ r* Q3 V$ d* Z, N
: B1 K- F- T4 r$ T" f+ z- G: `3 Cupdate-credibility-ijl
. r& A' I3 v$ E% u* n7 M+ S
6 V" m4 N4 W2 }
update-credibility-list* n- ?% t4 w4 e) S0 k! d2 ~

- I2 F' t6 ~# P( T" W; H! X: h6 C( h( ]; [7 M& |
update-global-reputation-list
# Z; |( X1 V3 V' O

0 {" v/ I: |7 spoll-class
; `" {9 j, l, ]6 c9 T
9 d' S! J7 [) g7 A7 q
get-color
  J' X9 w- v8 I  e4 t

- q' R( y' @7 g) O3 b]]
0 c, e# V7 v6 s% }- r9 t7 o! n$ i# S. I5 ~- v4 \1 h3 w  x
;;
如果所得的信任度满足条件,则进行交易( l0 x2 u" A* x6 ^2 ~
) l& C, O3 \( n+ h
[
6 K/ A& w% g9 d5 I! B* B( j8 d
# h; s5 x* }3 p. [' a" Y, s* s
rt random 360
/ ?$ X" J8 |3 L4 P
( x. {$ X" B% y) Y; Z
fd 1
5 ]1 `/ W8 ]2 X  Q4 M3 W: F
. a- R8 u; B: g) ^9 g
]

( a  I0 V+ u1 u) a
4 d+ s  g2 H3 u2 Z# J: |$ rend

" M- A# Y. J" e2 G3 }2 d- G9 f3 Z6 E; Z3 j1 O
to do-trust ' X& @/ o) C6 R( c: |/ L' g
set trust-ok False5 w& @( M0 K' N" g/ R$ M% `

. G; c" p2 [7 G* @* h- O3 B$ ]9 n& o
$ P; f/ x& K: \( L; Y- R2 |4 P( a
let max-trade-times 0
# O3 M, s* `3 `7 ?7 n5 S, \- b$ @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 E" Q  B+ p" f) O, hlet max-trade-money 0
5 A  U! z# l1 Y, P' L3 \foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 I& f( S  M* r9 y8 \let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 [0 T( F; X) G6 s; j+ z# x% ]
6 T5 f- n) V  p* M
! [( f: j0 ]5 C: a) X6 X8 [
get-global-proportion7 S: V/ l2 f' l* b& J/ [+ N9 ^: ^2 ~# B
let trust-value
- X+ |( Y4 B: G; K' jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 j9 u/ x0 k  o4 dif(trust-value > trade-trust-value)
2 N( b7 A, F; R  E0 g[set trust-ok true]  J; c: [/ J% W
end7 f0 w, Z+ b2 d4 B

( i; C1 _5 Z3 `9 l6 X2 `5 x  Pto get-global-proportion
  o0 M. p  Q2 r; R! v8 Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ c6 s, l  Z, A1 e  l
[set global-proportion 0]1 D1 l5 V5 z3 K! c! O
[let i 0* O7 r/ j: m9 X
let sum-money 0" Q# E0 t0 p: a$ a+ n! y0 ?5 Y2 S
while[ i < people]
1 c5 j! P( I/ ?8 v( X[; F& ?! R) z( d* ]6 M' d# S
if( length (item i2 Z/ j) t/ k4 [, Y
[trade-record-all] of customer) > 3 )

+ ?, D& o) r6 u: y' M( z[
& w' F6 _3 v9 S5 N4 d& R. o% ^, Y- Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ ?8 \4 \$ _8 \& ~! k" }  D]* }: i% R  X  t$ ?+ `# H8 q# f6 B3 C$ s
]
4 V8 j8 R# R1 L$ k+ v, T' |8 dlet j 0
! A6 p7 b0 _) U* M! Ulet note 0
: ~5 q1 w+ x! l4 ?! k0 m* ywhile[ j < people]' I( P( p' j( R) Y: n' G; O$ j2 `+ H
[
" Q. v- v- m  u* r3 W  pif( length (item i
5 q9 o5 P+ F) \  S0 A[trade-record-all] of customer) > 3 )

" g9 L; A& S: f. ^; O[
6 T0 s- s' [3 ^2 N. e4 a& @ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. `, f) A7 E8 c2 s0 C3 C, U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ @2 J% ~7 {9 q* `6 [) v  N
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 O0 v! c5 D+ l) ]) y: }
]
4 ], q3 _: R% H0 u) B" V9 k]$ f- Z- |) Z. c& B$ ~0 F7 p& ]! U
set global-proportion note4 J. k5 W, r* T
]
, k8 z- B. R1 d3 J! Fend
# j0 @2 j) S0 N& t- z
& p* p9 x' F3 j9 wto do-trade
6 C4 Y/ V0 `* y' K8 h- U;;
这个过程实际上是给双方作出评价的过程( Z+ C8 }% |, D. k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 z. U2 G( D" K5 \: {0 u# Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ C: j/ F/ w: h* t& U3 G2 nset trade-record-current lput(timer) trade-record-current
7 Q, k4 w9 O1 k  E/ v;;
评价时间
/ u  j( D; X8 U3 U* Sask myself [
7 ?5 M0 Z9 |/ {" o3 Lupdate-local-reputation) A9 R0 b( G" ]; x
set trade-record-current lput([local-reputation] of myself) trade-record-current
* ?9 Z) P* [4 f+ y* `! T& ~( h]
3 M2 j" |3 @% `! T3 tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 _# a" W2 A+ T7 t' u6 G/ N! b! E;;
将此次交易的记录加入到trade-record-one8 O! }. T' T2 H! y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ F7 i# ?5 i5 Y5 f
let note (item 2 trade-record-current )5 ^5 Z  e; H( J3 g/ N
set trade-record-current
, |! U9 n9 ~0 d* o8 d, S(replace-item 2 trade-record-current (item 3 trade-record-current))
, o4 Y6 j7 _: X8 v- t
set trade-record-current
2 n$ d, Y# t# T' V! v(replace-item 3 trade-record-current note)
$ r% c, }4 O6 f$ n, {& D& g9 G1 U# W! W- e3 ?" Z- n' Z( y
3 n) M  d! C6 M( X
ask customer [
! R6 {$ J3 p! ~9 R) Mupdate-local-reputation
( N) B3 n7 Q  H: Qset trade-record-current7 z3 U! s# A2 _; V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! k3 R( R4 w/ `
]7 t* C% O8 t  Q$ f9 n3 o8 R

. ]7 ~" Y% J* d2 g; L: n4 a
8 C- I3 W% _  B( E( ]* E7 ~; l
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( ]/ @$ c* F4 T& i4 y

4 v# i( Q6 o7 l( z8 x8 y6 I/ \( qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- y$ X! |- G! ~' P5 Y* E;;
将此次交易的记录加入到customertrade-record-all
  W  ^2 a5 y1 K4 c4 a0 f7 i+ C9 ]end; U7 v) t3 E2 Q( k4 T, q

0 N. i$ t' ^" f% a( Dto update-local-reputation1 Z! g0 o( j' |5 y1 o( j2 N, Y4 `
set [trade-record-one-len] of myself length [trade-record-one] of myself  ~9 O  i1 c, Y; K& k" K$ K" G3 n

3 N) P7 o, g2 z. f$ v: @& _; n+ j$ N( l0 t4 ^9 y# L
;;if [trade-record-one-len] of myself > 3
2 X% o' Q- K/ @8 p# k+ N; T
update-neighbor-total0 V/ y) k7 o( Z' c! a; b
;;
更新邻居节点的数目,在此进行/ T& \9 j# e# c& ~* n
let i 39 ?! W' K8 a9 L
let sum-time 0
+ G" J  I7 p7 n: I6 C3 Y8 Rwhile[i < [trade-record-one-len] of myself]) Q) m8 q! m) Z- A. E" T# Y" y% \7 s
[6 f$ S3 s  M* z. C% g! F
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; k- w# J3 }* w5 wset i
1 Y/ G' B" b$ @. B2 _+ L( i + 1)

7 Z0 X1 \7 d6 l+ Z. \+ v]9 [% h( v. h; K+ c5 v9 X$ H
let j 3
5 l2 ]' P" H$ W2 m: elet sum-money 0$ V7 W$ i7 J& `; s, R( s, A
while[j < [trade-record-one-len] of myself]
2 g- X9 T5 U  ?6 g4 G- n[
' [5 p( X$ X; aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 c6 O2 f1 K  sset j
" p7 E  ?: U# E9 K' W' v2 n# a( j + 1)
1 @. L. C$ R/ s$ H9 u
]
' u) {& g+ C$ X9 d3 alet k 3- |- V9 ~1 ~5 X" p: P5 K
let power 0( V* g7 M( e3 ~) a2 j
let local 0) I8 h9 Z* P4 n$ z! t
while [k <[trade-record-one-len] of myself]
/ s6 Y- A* x9 @4 ?+ q[" J* i3 R$ t" _$ I3 O. O
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) # \" ~  m" b, S7 B2 F
set k (k + 1). S$ f7 X/ m. h3 R/ Q- J0 h  M; g2 j
]4 C! g# b/ S' F; y" I3 Z4 @
set [local-reputation] of myself (local)+ g" U  [1 Y; }3 k
end
/ C/ T3 |* Z5 ?* t: f, m( T% k# S3 k' D
to update-neighbor-total* C/ v7 O& E! l, T. E  U5 R

9 @" J; ]9 w+ i+ N" ^2 `! sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 a2 ^% p# i) T$ m1 y2 L3 E0 y( y7 g
% T2 @* |7 k$ z( j. B$ d) Z: z  I4 F
" j0 o- e. Y# [- G
end. n) O' l; E5 D4 e0 M# t' g+ x
7 a) J! u0 v5 ?; J  d% I8 W
to update-credibility-ijl + y) O* r  y: Q5 x2 x+ n
) }- v  H* m0 c1 Q5 I/ l  f
;;
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。! n7 {3 v! p+ B4 H% z2 a
let l 0& b( F3 ?0 p4 q# s1 x8 Y
while[ l < people ]$ h4 X4 M) L; g( M; l6 b
;;
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! x: M& p7 C1 }, B  R7 E8 }
[- L' V  X; n) K7 [9 g4 L- l3 j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' s  [# A6 @5 B2 U' _8 L# A% Sif (trade-record-one-j-l-len > 3)
3 |' j1 G! V% r5 }[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' f% M) z0 N4 k* Z* o! g( P* L6 d8 {
let i 3
/ o$ v6 N. ^! b  l+ D  Ilet sum-time 0" ?) G+ Z- W/ D0 M% ?
while[i < trade-record-one-len]2 ?6 B# o; c2 E) X
[
! h( Y2 t! L' n4 w# jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): \. m; R. s5 q( Y: F* s- d! ^
set i, {  D( t  }, X/ i
( i + 1)

- D9 @% _5 z% R]( a! O7 U  n( ]1 a6 B
let credibility-i-j-l 0
. c( Q( V% x( X/ `7 t  `& p;;i
评价(jjl的评价)* a4 [" T; h+ V' |/ |8 P
let j 3
5 b1 x' c  @6 Nlet k 4, Z0 }& e, p) n9 _* H9 ]
while[j < trade-record-one-len]/ s% ~* ?$ y' g3 m& ?9 B
[
/ R* e! O- C2 t' ~1 G4 y: P( v9 |9 g; Wwhile [((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4 g, E& v; D$ e7 i# A) b( Z; |
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)
  p/ m+ E' _1 P/ A( x/ Rset j. }! D% s& W. v3 w
( j + 1)
! I7 V) o8 K/ ^+ }( V: i
]- n& u! B$ x6 }
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 ))' R$ e- ^) ]4 }8 ^/ P6 O* N- }

2 j/ q! r/ g  z. J& f, k

* Q; o+ o" _- N9 Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: c3 A4 \* |; A4 e;;
及时更新il的评价质量的评价
  g% g# ?5 q  Fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# x0 c# Y2 P) L& q/ g( B
set l (l + 1). d8 ^  F  q' J/ t0 }
]$ S3 m. H8 l# K
end
6 g' d. p7 O9 Z! O6 Y4 M. _1 I0 l0 s& D+ L
to update-credibility-list
4 Q! T0 D3 m" w/ S! C9 g0 Xlet i 0
! d1 R8 ]1 \" S* Jwhile[i < people]# }' ?* ^  _" A0 ~
[- L7 M5 g- e+ \+ \" |
let j 0
2 t& P1 b4 v9 E# y& V' Ylet note 0
1 A5 E) i" a  D5 nlet k 0, e. _0 O" Y. G+ N+ O
;;
计作出过评价的邻居节点的数目/ V- A( e, M2 K9 W2 ]; j* [) \$ R
while[j < people]
% I3 Y8 _0 Z9 y/ w+ j3 u[4 y5 t& f! S* h" K) F3 R% ]. T4 R
if (item j( [credibility] of turtle (i + 1)) != -1)
7 ~0 {# f/ D+ w2 K/ H;;
判断是否给本turtle的评价质量做出过评价的节点6 E% s" D3 N5 ^; o5 d0 E4 T6 g! P
[set note (note + item j ([credibility]of turtle (i + 1)))6 K& l) b5 e/ o- M/ Y; g
;;*(exp (-(people - 2)))/(people - 2))]
9 c/ k- s; e) I3 p
set k (k + 1)8 Y& t: L! y- i5 e. O5 E
]/ E5 j7 x* M) n- H  d( j: P
set j (j + 1), ]8 j$ S1 |8 f8 b0 j# S: _
]
" v0 S' y5 {% Y1 u) I- oset note (note *(exp (- (1 / k)))/ k)* p; {% M, `) h% Y/ G* W
set credibility-list (replace-item i credibility-list note)$ V7 o) E! `4 F" k/ R/ p- C8 w, B
set i (i + 1)( B$ r6 u( M. j: C+ h# L7 N; V( N' p
]
8 G+ k. l, Y9 I7 ^, b) V6 yend$ u; h! a0 ?( o! e8 [+ A; `8 d8 X) H
! J# K  T9 w" y8 @7 C% x
to update-global-reputation-list
! X' [5 k' k) x2 wlet j 0% n' B1 W0 u; ^! t' U
while[j < people]9 ]! }: @# H/ Z0 ^! V
[
5 c# [, O' g6 \& _, n! ^let new 0
5 m* ^3 Q8 v- X; f% t9 @6 k;;
暂存新的一个全局声誉$ P1 g6 E$ M2 v+ e3 ~% g7 H9 S
let i 0; u( `0 ]) [  v# ]+ J" V, {
let sum-money 0/ L9 Q5 ?6 W* {
let credibility-money 0
# F' R3 d+ U2 t* E  t0 O" q& Ywhile [i < people], k! u9 n6 m* ]
[  r) b! a; b0 o, H. }8 L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 h7 Z( R2 S( `( Q7 Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) u7 E9 `; t% H" {
set i (i + 1)
8 A- Y1 J0 ?' d2 u]# a" x0 N2 ~5 m/ k% k& R& l
let k 03 H  u6 k6 S# G' W5 W( G
let new1 0
* {0 z& L7 Z8 r) P4 L9 b+ Jwhile [k < people]* w! T7 g) E2 {! W$ X8 t
[7 g( s5 r3 x7 D3 P& R5 P% q
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
4 i3 k2 X- B2 ~: h& T. Nset k (k + 1)5 K! W8 j. g5 o$ n* ^
]  l3 b; y+ x5 M& U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  H: _, j3 F+ J' p7 r1 g! ~set global-reputation-list (replace-item j global-reputation-list new)
6 j) ]3 H8 Q1 e5 I3 j5 l5 g8 D; Bset j (j + 1)8 ^% E5 N5 k! P0 e- [
]
* y* d+ r9 L9 w* Cend
& P/ q* f7 T: x/ L9 j. N
5 G* k' O0 m$ E8 w% l! t& \9 A9 g# F+ L+ W& v# }5 S
$ f) g) P( R$ x, F4 c
to get-color
. v2 y5 s" B0 a
* m1 m. \# l$ L2 Kset color blue
$ ]. ~: v1 d% `8 y
end
0 m" f. c3 ]7 n) J. k" s3 r5 @1 g7 ~! t& W4 K, v
to poll-class. o$ J) B# \0 C
end+ s- k; i* t; G& |
/ F2 T* m5 j3 X7 G  e6 H* G
to setup-plot1* \9 r5 D$ l% `' Q+ A

( O0 u! i9 B* Q( A* X% kset-current-plot "Trends-of-Local-reputation"

3 N- m0 ?) D' V, D  w0 U0 p, L& c) K8 Q6 h% M& K1 E. Z* y
set-plot-x-range 0 xmax

$ T* g& a* u0 t( W6 ^: V
, s4 Q2 t7 m7 i  m7 `set-plot-y-range 0.0 ymax
/ r5 Y6 t' k# o* i9 @
end
% a) A. ?; d1 L; Q4 z3 n  L. y( V7 i2 I8 y
to setup-plot27 `8 A) h! ]1 J

. \$ b6 S1 _% b; T# {' o0 e: hset-current-plot "Trends-of-global-reputation"

8 H) D3 B% n8 y: ?
6 ^! K) p4 F! g4 L# x$ v4 z. X; e: xset-plot-x-range 0 xmax

, f; P8 H$ r" i& N3 G
; V+ u+ k! p' k+ k& B9 Iset-plot-y-range 0.0 ymax
% p& c0 |% o6 J+ y6 Q9 C8 _
end! m, H- ~5 T2 Y3 L3 K* N+ z& A" r3 ?) b
4 i  j" r& M* I  w
to setup-plot38 ~4 W! G4 ^. {) b* d

& ~. ]: g6 v8 P& |. N" n& r) X! Y/ mset-current-plot "Trends-of-credibility"

: [! l  i, g( O" l" I$ p5 p; G$ q# [) P% R
set-plot-x-range 0 xmax

( H% v+ I& j: h2 l0 m/ @3 L5 K- `3 b/ j1 t
set-plot-y-range 0.0 ymax
2 P0 z/ _+ h: H5 k. [) h/ r
end7 d! T7 m/ `- y/ m

8 _7 d3 F0 e: [* Vto do-plots
7 A0 ~! s. C1 k2 g$ ?set-current-plot "Trends-of-Local-reputation"
: f3 v4 H: k  d  Fset-current-plot-pen "Honest service"- u; e- E: Q1 G/ x2 c8 \. m* B8 o
end0 A3 `$ F( j3 C

) R9 k/ c) Q& B* j[ 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.1 |, b0 l- ^3 [0 X4 A) b" O& i
6 r- p. S: E* q1 S7 i
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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