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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
5 U0 i  [+ z- V9 a( l0 n  `to do-business
+ \6 V. \# q2 O- I% J, d/ K% `& I6 f rt random 360; _" o' v, D& {9 T- x# U  l
fd 18 F9 w* n( C4 p5 o& K1 S
ifelse(other turtles-here != nobody)[# X/ G' ]; |8 W. r5 i6 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.
+ {5 o/ o7 F. P  c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 S) D, Y/ g" e5 s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 V5 m/ \; E: V  ?/ P) J0 a( J
   set [trade-record-one-len] of self length [trade-record-one] of self+ n7 w! d0 f8 M
   set trade-record-current( list (timer) (random money-upper-limit))8 f. K; v2 N; _2 K
. O9 C7 A2 j* Y9 N5 M8 X% X
问题的提示如下:
2 r6 h! f+ i  Y1 Q: ]
, s* U3 v; s% O/ M- I1 \1 ferror while turtle 50 running OF in procedure DO-BUSINESS: G5 y8 E) O* Y6 g: ~" ^( x
  called by procedure GO' \- i2 c2 `4 B/ j! M: @1 n
OF expected input to be a turtle agentset or turtle but got NOBODY instead., L8 }! D& F+ R7 }
(halted running of go)! o" l4 w# A- F1 i0 j, n4 m& T7 H* n5 U
" r2 ?, @, B8 D1 m; h( n
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~~
/ k9 ]# Y. I+ x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
; M' t  C9 C- {6 c: ~globals[
  ~# M7 B6 B3 b' q6 E6 H6 wxmax0 f* S5 K0 ]' z7 E" |+ z/ X. i3 J
ymax6 V  ^. v% {) M) J; Y0 f
global-reputation-list
. w  t1 {0 r0 q( o, m
9 }, ^$ V5 T- M) P  C( N) Y) g0 W;;
每一个turtle的全局声誉都存在此LIST
/ t9 K2 n6 F) q7 S8 H8 dcredibility-list" E; Y/ ~6 t, O% D1 _1 \
;;
每一个turtle的评价可信度
" m7 M5 o* H/ U. [: lhonest-service
' K+ G. L" d& ^9 i5 N8 Zunhonest-service, }% N2 x: O! V3 o
oscillation  q# b! _% ]( Q- |. d; Z
rand-dynamic
3 \% P- f; g% b2 f- A]
0 q% Q% `$ L6 Q! V% D- Q# S9 u9 h: [/ Z. Z
turtles-own[
! [) f* E! L4 u* ^4 g+ C9 t2 Dtrade-record-all
% Q" w% c5 r4 k4 G! Z;;a list of lists,
trade-record-one组成
+ ~( @. _1 I% u3 E2 Z9 Jtrade-record-one
' Q, Y3 U+ B& W* ~2 s- z* w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! E: ^+ \! C8 K8 B3 j3 }8 K$ h% _

& G/ ^" u7 O& P, E;;[
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]]5 U3 d. F6 y+ q
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]. e9 G" X5 V7 p- u1 }& M6 \
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! P) O: W% `( b
neighbor-total  G6 B2 K, p2 `2 S  r# {
;;
记录该turtle的邻居节点的数目
$ a: @6 e7 M* j' G2 s+ _trade-time
$ W, P1 `+ p9 {- T/ d;;
当前发生交易的turtle的交易时间0 \7 L! p, Q. |- }
appraise-give' M; R) ~; s! J0 D" |
;;
当前发生交易时给出的评价1 L. M8 W9 n, w6 j) l& a
appraise-receive
" J0 i) O4 K; U3 p, I;;
当前发生交易时收到的评价
6 Z, d4 N, f5 ]. mappraise-time3 v$ @5 T+ \$ d( ?4 p! s, U
;;
当前发生交易时的评价时间
7 k) B* T8 X' A' `* wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉: a: g" [+ d6 }0 D6 a
trade-times-total
* ?! F( X' i# u' g0 h& Q1 A;;
与当前turtle的交易总次数* o! d8 g* u9 H
trade-money-total
7 R# f. x9 }0 C. W) T3 ]6 ~;;
与当前turtle的交易总金额
& ~3 c, U, ~' Plocal-reputation- J: ~7 S5 n$ b% J2 j; i. y( u. P! O
global-reputation/ N' l" h3 I8 G) h) d' p
credibility  E, n  i$ z2 _( M/ B# n' [
;;
评价可信度,每次交易后都需要更新
: J! P7 P+ c' ~- {, q) @' acredibility-all: @5 s% ?9 d; x! b/ R, ]7 G
;;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
7 X) p$ ~& h, {. f  d9 ?/ B7 R! h' @
;;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
2 {8 K1 M) @. {5 A, k+ I: g$ z. xcredibility-one
2 n! H  O+ J5 L9 |;;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people0 M; p; ~1 e8 p  |( v( j. {/ @
global-proportion0 E6 d  N' |6 `% h+ j
customer, {  @- o4 U2 R; j' N% s
customer-no
% y2 }3 A' c3 etrust-ok! Y8 n3 x4 a' g' g! N5 [% B' A3 ?) V
trade-record-one-len;;trade-record-one的长度! H% w! c3 l9 m9 Y* |
]
1 n8 C6 v7 P& s! `# \
! s6 m& k; I) p$ Z! {( R4 Y;;setup procedure
) {2 q+ q& l* a9 r7 W& H
: {9 H0 \. G& s7 p" R. H- Fto setup
: Z+ L, e0 q: o9 [9 `3 k7 s2 ]5 C. ?& @/ ^# D) P& @# ?. T+ A5 [
ca
$ N2 M! j3 P+ O* C3 ^! W2 O3 L+ H

1 K: k: V5 h  D" W$ ^5 c! Vinitialize-settings
/ ]  F5 x3 B4 t2 }6 V; i! j
, \, O! J* Q) `& w
crt people [setup-turtles]
+ }/ t% p7 c6 y; U; w4 D
. T% }2 k5 b) K1 e, @1 D$ M& I
reset-timer
4 J" c/ G) P) ~  v4 y0 Z+ ?
9 U4 d$ y" {4 l- C
poll-class

* i) N: U+ [: ^0 x9 c. m7 S% [' `* q9 c# X
setup-plots

6 D, X% M9 O! M- v8 N( V9 W) c+ M" k3 d$ b3 Z
do-plots
, }9 [5 c/ _$ j* s9 v
end' y3 k8 c, [6 V' r
- L. s1 B2 |: ~. `& x
to initialize-settings9 J, _5 i1 x5 s7 w8 ?/ v

! s% u* v& h( Z: T! v* Eset global-reputation-list []
8 J3 ~" H) G( r) n7 N3 f

' T3 R; U6 C( v' {set credibility-list n-values people [0.5]

3 T. ~4 M. E8 M' y: T
: }6 v7 a: b" f- pset honest-service 0

7 _# q+ w; i1 b& A7 B8 K. ?
' L$ y/ C* L- c3 d0 Vset unhonest-service 0

1 b& R( E7 |1 X( `% ?
# u9 Q7 l1 K- ]set oscillation 0

* N' K" M- ~: m8 s: f: j* t3 I8 D" |4 s. b* D6 S- i& |
set rand-dynamic 0

2 `; |; |) r' V" iend4 q: I) \0 I7 i; y
' a% K& s" T- _6 _* w/ A" ?
to setup-turtles
' G: g- `1 M3 v8 F, A* @% ?set shape "person"
7 X, Z0 C* G4 x, U# }4 ]setxy random-xcor random-ycor! G# C( P  I4 Y! W' `0 @8 N
set trade-record-one []. x. k1 S* \- B( f3 T$ U' t
5 G- I5 M3 ^3 m3 a
set trade-record-all n-values people [(list (? + 1) 0 0)] - _( g) \3 P$ I; A
" `" E: M# l+ o
set trade-record-current []
6 j( A- I/ N5 o& Bset credibility-receive []
- W" m0 x  L8 h8 B# pset local-reputation 0.5
% |  ^1 q, U4 p" R' `, c( F" `set neighbor-total 0
, q% e- a/ k; ^5 V. kset trade-times-total 0$ Z# U4 V# Y  J. L$ j, G0 e6 O
set trade-money-total 0
' l! h, i$ q: b( Eset customer nobody: h% F3 Y& d4 ]) n$ G9 J
set credibility-all n-values people [creat-credibility]* K4 m# T+ c1 j, ?  n- z: s
set credibility n-values people [-1]
/ L3 C" `9 g: D7 {5 q# f  G8 Mget-color8 f8 a9 ]# A( p* {" X6 p

" O) @# f- y% n7 R7 x0 H3 kend9 D. d+ \, X. n) E& J/ n

+ L( q4 Y# j& a* X8 l' }to-report creat-credibility
9 \% q/ i: f% z8 Z) F( Breport n-values people [0.5]
8 t# k5 X1 z2 p; a5 jend
% N: A0 f- X1 A/ k
' v0 t) s. {7 Sto setup-plots
! a2 D# E4 Z: C7 @7 x4 @& _9 h
" O; u5 Z3 Z* T1 d, k' t8 hset xmax 30

! r* h0 i0 F& I7 i& y
1 y) \. U8 E5 qset ymax 1.0

3 x1 G1 \3 M% l- L) V4 K0 ], T
/ F! n% a* R$ x) U: p/ ?8 hclear-all-plots

, _; J/ C: m; `2 c( r2 B% X) I8 R) {. E; \# O2 t
setup-plot1
4 C  ?) I7 l* k2 n' [! _. P' M7 U
$ G& |0 G1 |" I* f( C7 |& @
setup-plot2

- j5 s6 [* |6 x- C/ B7 A$ w4 i& n
setup-plot3

: x) ^% m8 F! H2 Z' n5 ~$ }" Q- gend
3 M' ^! E( t* C
4 A5 V1 S& t5 q* U2 C' _" n;;run time procedures4 I; q+ ?, R( u

3 G) k9 w) U" I: lto go
% J3 s. l: B& J+ f3 k+ u
- V6 p/ q. l7 J, B8 t  c) ^) Pask turtles [do-business]

8 b- |4 q3 r+ {end' E! M. k+ {5 ~" E$ H$ y

; A" r2 |/ u) g0 T0 v, C% ^to do-business
& K; Z# {( r6 q% J1 v0 U) j' k- `
0 D0 L- u2 q2 D: m5 G8 F) r5 Z
' A" P$ \6 v$ e# r4 \7 I
rt random 360
2 o: d  ~* E* U1 Q" f) r
7 v5 Y3 i3 q2 E
fd 1
2 {- H, O; T$ e: t1 K

. {$ V$ Q- o# F0 U% Bifelse(other turtles-here != nobody)[
$ W9 e9 y2 L  D7 V+ b+ m
4 l, w7 v5 L5 P3 B% ^; v
set customer one-of other turtles-here

7 X( V7 F* L  Z; J7 w9 y3 s1 z0 K, n3 c
;; set [customer] of customer myself
/ h. F7 V4 k! f& P6 S7 s
- c' j' ^0 s4 X6 S* h
set [trade-record-one] of self item (([who] of customer) - 1)
5 g" L$ O$ H# q1 t' B[trade-record-all]of self8 d6 k6 i, ^: c! U8 t. J+ @; m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; b( a6 @6 c- x# d! n; J$ }/ x  X

/ g5 i  |# N" }) o7 A- }set [trade-record-one] of customer item (([who] of self) - 1)! Q" Y0 ~  O0 S: H
[trade-record-all]of customer

0 p2 F% ?1 F$ |& v2 o! r9 X5 T
& H4 u* ~. J2 g/ d  g" A$ q! Qset [trade-record-one-len] of self length [trade-record-one] of self
) |1 e/ ^- ?$ h( |5 V' D
- d: e  a6 z+ c- m1 g! L7 n
set trade-record-current( list (timer) (random money-upper-limit))

, K( u, e) Y5 V$ E0 i$ y
% J5 L; j/ ?4 a" m& \. N3 D* Eask self [do-trust]0 D# m8 I& x# V& b4 Q% T
;;
先求ij的信任度
# \( c7 c5 E$ ]- v; p5 q
/ }8 E  ]( z- G9 ~) |& n$ J; I. _if ([trust-ok] of self)8 `- |# ^- U( U) p
;;
根据ij的信任度来决定是否与j进行交易[, U9 l, R1 s3 V( a* c* x& f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* Q2 M( E. I- w! n5 o) n

! a1 O7 r/ \; E- B8 v; I% H  c[

3 P9 T1 o. ^0 D" W4 d4 X: k
; a6 X1 a+ Y- a# ^& Xdo-trade

5 I5 ^9 {' ]0 t! M; H8 W7 Y" p) g% ^* Y# G! m3 K
update-credibility-ijl
' d) V% h% u+ [- J$ N6 g
& m% R- E5 Z) a% v. S" T
update-credibility-list1 p$ z- Q9 a- p5 J( R
; }! X' U% J+ ~5 E

0 `9 q5 F) t: x& hupdate-global-reputation-list

- b7 E1 C$ F# t8 U/ h) L6 _
) d* L' v4 N$ W! {0 D; b. J! [poll-class

4 U5 B/ V( a/ F$ E! D5 C
0 t' }7 f, X) W  F' Cget-color
) w: U3 Q) c* `
* w' U- w! I0 p4 V$ l7 G
]]3 ^6 s  `. X% V) B* b

% s1 T! z% ?5 ~# p  _1 M;;
如果所得的信任度满足条件,则进行交易
& A+ I* g' ?+ U8 X0 N* }. y2 `5 b7 D6 l1 |4 W! t
[

# i, y+ b! ]( l: r
8 H! L# Q6 m7 E2 U" frt random 360
5 ^1 {1 C9 N/ |' k7 m; G- F5 }9 @

) U9 C1 q8 I& F) ~8 [4 Y0 x: Pfd 1
; k# s( u2 [; ^) e: j

, n9 `& X8 y7 W! ?! d]

, `& [8 @' X  ~! g! x5 b) p9 C& T
) l3 f* v7 o* cend
) ]$ l. N3 Y7 f
# ^8 z; t! b  d# t1 v' _& l, X3 n
to do-trust
2 {& m9 E' I4 M; u/ P& kset trust-ok False
3 D$ T$ c' Z; Y: A
4 b/ p- P" A3 `  I0 f* I/ F# k

9 u3 r; Q1 Z. p9 Rlet max-trade-times 0* c" \3 B0 x3 h+ b% c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 A( M# Y  @1 G, ^* Q
let max-trade-money 0" b$ V( E5 Y) R4 F, z' I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ ~- {5 a7 Q$ ~4 tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" @/ Z7 j) G. o% T
3 h# u$ I3 P9 S% ~& `* z6 A- ~

7 l7 k4 \% B% |  O3 _' |get-global-proportion
4 K+ k4 x* p- l0 U/ Y4 o2 N; I% h) Mlet trust-value
, f( r- D5 v" O) F, Glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- g. X# I: I% ~) v+ H8 T$ W  W! \" Rif(trust-value > trade-trust-value); w; Y% c7 C" t: p( b: N! H& O
[set trust-ok true]* s0 f+ ^4 s' i) T+ ]
end+ w# {7 Q3 z4 W+ z$ A! o% {# k
& Z8 _) O. v' n) l3 M0 T5 _) M
to get-global-proportion
) v, }% l" l" g$ j% n3 F. Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 H+ y9 W1 N* k8 v0 Z4 T2 _[set global-proportion 0]* v3 M+ u( J* S" u9 v# ^! t
[let i 0
, I. Y+ S2 U8 A$ M5 Zlet sum-money 0
( Z' @% b! J6 Z( b8 a# ewhile[ i < people]
- z1 @. ]3 a2 z1 D3 H% G, E[
* ^1 `' j' f$ \# o* N% {* A5 I( gif( length (item i
: `4 {' E& Q, X: s[trade-record-all] of customer) > 3 )

/ ^8 [- Y9 N0 c% S4 n' a[/ ~7 {$ H' \! N
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 ~$ V8 i7 }; k, P]) J, D& w4 R( e3 C; c
]" x8 \1 D$ I. h  t4 z
let j 0
# y% j4 V7 }( |! `2 E, xlet note 07 O3 Z, Z0 p" D  l: m( }8 e
while[ j < people]. G+ X6 ?* _) L  m  S
[( ~* e+ a: h4 B) @6 H7 }
if( length (item i
8 Q# g) z( C/ B# X+ l[trade-record-all] of customer) > 3 )

$ X' y9 M( ^" t[2 ^  K. @# @3 h, }3 X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); n9 A- H" I0 w8 _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 E+ X; l. ]; Z2 S# N# d* e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* ^0 B! K; `" L* {8 t
]
0 z, @$ Z3 c& P* h  P& j% h]
& ?8 n+ Z% S5 b0 T4 Cset global-proportion note
7 }7 P; J: x$ }8 I+ h& E]0 P  p3 E# E+ i1 n$ _3 ]8 ^
end
$ j' q  q, B% t6 H8 N- v- X
0 Y, R  z6 c( y/ k" Y8 ^( }7 sto do-trade+ L* _5 O' P8 a- i4 b
;;
这个过程实际上是给双方作出评价的过程
# w- X; W: e6 E  |4 [2 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 i, s9 E% B! g# c0 v. Q; |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 T& p7 h" e& f5 Q9 T3 Kset trade-record-current lput(timer) trade-record-current
( i* l1 K" N0 |. t; s9 ];;
评价时间6 s, N* ]- s6 M. M5 H
ask myself [
  a$ v& G# ^; i. Z% oupdate-local-reputation# z8 c/ ~) o4 A6 _3 P
set trade-record-current lput([local-reputation] of myself) trade-record-current2 V; \4 e3 P1 t# f7 t1 _
]
) |7 b3 `$ `! s$ Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. G8 ]: q; L4 L1 L, a4 n' K, [0 e;;
将此次交易的记录加入到trade-record-one' h5 M) P6 \( K2 o& n; j& P) v
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! E5 R: w: O* r2 P" r" A' F" V
let note (item 2 trade-record-current )
% ^# ?/ z. U9 Y5 n+ D( qset trade-record-current
( _% m/ C+ m. R) r(replace-item 2 trade-record-current (item 3 trade-record-current))
: b& w, c8 K( j' g; j
set trade-record-current
1 W' j6 U1 o" o& Z9 m(replace-item 3 trade-record-current note)
( N7 U, }" n: U2 F: o( F+ Z. N4 L4 w6 R* R
2 i* L, q& l8 k
ask customer [8 Y( h: S6 D: ^) v0 N+ N
update-local-reputation4 \0 y# q6 X" r  S# h  d
set trade-record-current
; |' H: H. K2 j/ W0 |1 ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 t2 J" T8 p/ A0 w]6 }" w; e8 b) d! V- J
0 _: N2 q, P8 y! m2 t9 J$ E
% Z+ I- D) @3 {  P8 z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# H8 W- q5 N; {

# `! z/ G( k5 E4 fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; |/ j8 h3 k3 M: d0 U;;
将此次交易的记录加入到customertrade-record-all' i, t9 B) `/ ?8 ~8 p: s
end9 e0 V' w( F8 j
0 d3 ^7 g- U- z5 X
to update-local-reputation
/ x4 G. b3 Y6 r4 u2 t% Cset [trade-record-one-len] of myself length [trade-record-one] of myself
" c' R) Q' S/ I  U/ n$ [* E) l$ S7 B
9 k; _$ I. u% H+ r; Z8 I6 f! |/ s5 @% |2 }0 m$ f4 j
;;if [trade-record-one-len] of myself > 3

7 q2 c8 P1 I# c- {/ Qupdate-neighbor-total. t3 x" h- V  a, x
;;
更新邻居节点的数目,在此进行
4 s2 |' ]% u8 _3 r/ ^% _let i 33 b) k; ?3 f/ T' j1 W8 C
let sum-time 0
, H3 K8 K1 ]  {: H0 R. V. {while[i < [trade-record-one-len] of myself]6 t: {' e  [' B7 E( H2 r  n
[9 [2 g! `/ ?4 H' m
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); {& T+ q" I2 H0 w* V3 I/ `" X
set i7 s$ H# ~7 w% f* ]6 }- R5 N  c$ c
( i + 1)
- V9 Q8 e9 N3 ^. h+ q/ m
]
9 \4 |2 z5 W3 r. x; s8 N) q$ b& |let j 3
; X% z* E" V# ], _let sum-money 0
& h& x. e" g/ e6 C  awhile[j < [trade-record-one-len] of myself]
" P0 i* ~1 h6 Y; L: w! b[  @0 F4 [) b  |6 `7 S; p8 Q  @
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)
  b. u0 h# V$ n4 ?& Dset j. K' Y' S: m$ O$ [4 F$ n
( j + 1)
" Z2 T3 k$ z: Q4 G5 V
]
1 B( y+ ^, i( D0 U1 ylet k 3
- R# b1 l( R: c- Plet power 0: A" E/ q: v) j9 X
let local 0
5 Q' K* P# U* B0 ~while [k <[trade-record-one-len] of myself]
/ d) l  B6 G+ n[
8 G+ s" d* Q7 [% u: ~" \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) 8 m& R. q. L4 Y6 I9 u0 F
set k (k + 1); ^: K) R# z+ ?2 v' M
]
( @5 y/ I! N) A. V* W# b1 ?set [local-reputation] of myself (local)
% L# L8 H; n# s0 k3 qend: V2 L  u" V. o5 m: b9 V

7 d! E1 F+ b. o* \" Oto update-neighbor-total" }5 j' s1 r. U# N6 L& c- C* \

: T# V2 p( \" t) S; oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( I% {3 M$ K- J
1 N4 w! ]" c0 M0 Z$ m( H

+ Q2 Y& Z& _) S. K: Cend
0 P7 P( r7 _- E9 W: P
5 A/ k. u4 g6 W% r7 ~! A3 c  ~to update-credibility-ijl ( e" N( g$ Z, h6 |8 N, i
  {) ~+ @* z/ T5 B
;;
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。
3 l0 s! \" S: b; x# }( U9 K+ e5 ~0 W/ X" nlet l 0
: b* R& t  e" }4 Q" n9 jwhile[ l < people ]4 _. A  B; j# j# i6 z  d
;;
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
; }( U+ s6 C& w* q/ ?) A[
% J5 p5 }9 Y! Y, Q' s- c" h/ ~let trade-record-one-j-l-len length item l ([trade-record-all] of customer)& k$ ~; b" R+ Y  {# s1 O
if (trade-record-one-j-l-len > 3)  \3 i5 v# s5 m# J: k
[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
% Y3 l( ], M2 Y" C: }- y- Slet i 36 t6 Q. V8 o* b9 p# Y+ a0 z" \
let sum-time 0
# n4 u8 ^* y" F* ?# H  @9 B  Pwhile[i < trade-record-one-len]6 i7 D2 p+ ?+ c
[6 m& M3 C% w& G# T) {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. X8 ^0 Z5 L) g3 h, ~2 @; G2 }& Sset i' c- j+ }, z# T/ o$ z
( i + 1)
" T! ?9 y% z7 [5 N4 N: a
]
& G! y# ~* }" B8 L: f6 a5 Rlet credibility-i-j-l 0
: n4 p" r# B* [8 B9 {;;i
评价(jjl的评价)
/ m3 `2 J$ k0 r( m! z* ?0 [" r! t: Mlet j 3
2 k; C, P" p. F/ Y& l. wlet k 4
% y( I) l! ]7 i: L- Dwhile[j < trade-record-one-len]
# h3 d! n- ^" X  n[
4 ]! n  G7 A& H( ?! R5 f7 cwhile [((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
8 }4 G% W$ z9 N7 E, J: j' L. cset 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)
" v" u* C9 ^5 ?) C& Y2 gset j6 c- }) Z- n2 A. B6 K0 q0 @
( j + 1)

2 R; v' n) n$ r' I9 s, m]
& }. X% n3 }; eset [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( \4 q0 w1 A' O+ N8 y' e' r' F. U5 G) {; d0 d
3 W! Y9 p  f! \1 d
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 K) ]; z8 u8 S. x4 [( A
;;
及时更新il的评价质量的评价
# n$ P2 U* M7 k# g# v7 iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: j& d9 Z. ~! y7 l1 l9 R1 u$ sset l (l + 1)# }5 a7 A, a" e+ ?2 q
]
; f/ n# P  A; K6 w# S: ]6 @7 q8 Fend
' B# \( |  O) _8 w; q8 p  c/ X6 C
6 O9 W, c6 [/ _9 t5 g8 B" bto update-credibility-list3 v0 k; o9 P7 K
let i 0
/ V" N, p/ D1 |: C3 b  }while[i < people]! e. M3 U0 j0 k' o; \/ {
[
9 \5 v/ S2 y) j, ]& B9 O5 s- Z/ Vlet j 0
1 P) _6 |2 W- Y: ?( r( Dlet note 0* r+ C9 `. \6 a8 T* V
let k 0$ B, v% I: n$ |& h/ k0 j4 ?2 W
;;
计作出过评价的邻居节点的数目& v9 Z4 N# w( M0 R/ O; a) ?! F
while[j < people]
# u- Y& p9 u/ l/ J# ?% f6 E: y[
/ D' w! h7 A  Qif (item j( [credibility] of turtle (i + 1)) != -1)- S& @0 k& s+ D# A* M9 J) m  `
;;
判断是否给本turtle的评价质量做出过评价的节点, Z7 }! W. B- f( j" I
[set note (note + item j ([credibility]of turtle (i + 1)))0 A9 @, M& ]4 T
;;*(exp (-(people - 2)))/(people - 2))]

# J9 f8 I+ @% Q0 q* Q2 Yset k (k + 1)
) Z  F' E5 j( i' K' w]4 @1 N8 U/ Q1 N& p. I# t% F
set j (j + 1)- ^1 x7 C& k/ O. t9 X
]
) ]6 ?. n0 m! S5 Rset note (note *(exp (- (1 / k)))/ k)
# Q0 l. Y' b, Jset credibility-list (replace-item i credibility-list note)6 A" N. |0 m- j6 o1 w5 }
set i (i + 1)
) Z  C' _* k3 Y7 V8 J- G1 z- R]
# k& F. J; q% p" l+ T. mend9 Y" I- Z9 {& M$ A$ c. K
' D) _9 r& b1 Y) q: }! \
to update-global-reputation-list
5 z9 T2 }4 f- j& m. p6 m( W% plet j 0$ P& j1 l. f8 B# p* M- {
while[j < people], u$ k: J9 }8 G2 I. X+ S) p
[5 g/ i* Q4 _4 b3 g! D
let new 0: C5 S3 T# s4 }
;;
暂存新的一个全局声誉  }+ E8 |6 @' h3 g5 t7 f" ?; h
let i 02 F4 W1 r* k3 E4 o
let sum-money 0
, `& l3 s. a5 t1 X7 qlet credibility-money 0' y+ C5 B9 _0 E5 Y  l. m- H; x& S
while [i < people]
9 G& Q0 ]8 d1 O0 N2 O8 U: t( y. ][% [& V" y# l1 U* @/ O) l# O# Y# [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 w" i* D; I( Z  [. ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ I2 c: J# h' `+ D* _: v& A
set i (i + 1)  {1 E1 T, T% W  z( d% Z6 X
]
$ U; U: T% ^* H" ~& X: ~+ B( E5 u. ulet k 0; j% U, D$ w/ M
let new1 05 D' |0 Z) r) v6 n
while [k < people]
  Y/ {1 y- I9 l9 N0 I" J$ M[
$ ?- {# m& z% `$ f( K* ^) E8 [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)3 k! D. V# s9 J; [: }
set k (k + 1)
* h! q( j( ?- S]7 Q' J) ~0 y1 ~: b4 i  S0 \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 m7 \7 g" z  G" Y# j
set global-reputation-list (replace-item j global-reputation-list new)
( j0 F( t. _$ U8 H  @set j (j + 1)" Z% u8 U! m0 w* w3 R# e
]
8 M+ Q3 _' E' q$ ^end
" }* p% x. y( a) o( |3 G5 v* Z& f4 f
% k; p. T0 X4 t* f7 A. M' k& T- Q( m
# |4 y& n- b: L/ {
to get-color
# H  g0 _4 S/ W1 u. A7 \/ g! y) U& y4 H' }$ S) o
set color blue

6 m/ K5 S- I- r9 c6 T1 send
* B* s7 H: v& c  z- ~  S, K' N, o& M8 T/ P
to poll-class
$ A( G- {2 C! p7 Qend
9 |8 v! k2 t' m. G$ {. q6 E* \2 j8 ]$ f7 V3 L
to setup-plot1" u. X% ~$ M) }0 R0 c5 u2 m1 t/ h, h( R

* `' h/ _+ A% {, t  aset-current-plot "Trends-of-Local-reputation"
# v. O; G/ i' F( f4 O. W: |' j
- h( ]0 V% c3 m! \& ^' R, g
set-plot-x-range 0 xmax

( D3 K6 U1 E9 U5 L
6 E* [( C) N! J0 x; H" P9 C3 L* ]set-plot-y-range 0.0 ymax

+ Q& M, O; `, B$ V2 m' L5 F8 fend
4 N  b) R' s, n; Q: X- O
% s9 C% ~  R- r, N0 Vto setup-plot2
5 y! S& P% B7 b* G+ ?8 }9 t
2 ~7 V  E# Q. H$ Sset-current-plot "Trends-of-global-reputation"

7 L, ]/ i+ Q0 v& M
2 W7 e' Z! m4 P8 Z7 iset-plot-x-range 0 xmax
+ r% O3 f/ q4 [+ W, }% G1 t& m- u
  J, Q. y( u% ^9 a4 D& l. |" {
set-plot-y-range 0.0 ymax
5 S" \- b5 K# J7 j3 N! H3 L
end8 m$ P; `2 j- a* c! E5 a

/ [, V) h3 F  F7 d# sto setup-plot3# N6 Y: ~: x9 j* _# S  p# r( b

  x3 C& O( y& \; L' bset-current-plot "Trends-of-credibility"

- Q4 g+ t; P2 O. x# _  L; P5 }) X4 [' N0 K
set-plot-x-range 0 xmax

( O& r" D. M4 @6 I( Y3 ]& }2 t4 f' }8 o
set-plot-y-range 0.0 ymax
: ?& T, U: o5 |1 D2 j" V% w
end
" i' D2 S8 |2 B- R7 Y
' B) F( @: g* ?, V2 C5 ~! b- B# ?to do-plots, w6 O/ u8 P0 C0 o: I& n
set-current-plot "Trends-of-Local-reputation"
% R9 `; \" B8 m# y" W( R6 Y4 m& u5 Uset-current-plot-pen "Honest service"' j% T4 K9 A% q! J1 t  q1 L6 g
end& ]/ }! h* d& w6 z

! D  T, X! [2 H5 }. {8 B# T[ 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.. X0 K! S( J. a
) H5 P) x- F% a7 }( k1 f9 [
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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