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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:
- Q( M9 F7 l, E) b0 |$ D8 ]to do-business
" n0 L2 Y* c! v5 ^! v0 T" A' ` rt random 360" d9 i, f/ l  R! j
fd 1
. y4 m( J, O! q9 Q7 h ifelse(other turtles-here != nobody)[
/ k; U  o9 e/ F8 E" v   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.
& e1 j$ y! }( N7 s# r   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 z: o; ^7 C& o: c; M( V7 o
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 R. r' F7 H0 X; ^+ X, x& z. M
   set [trade-record-one-len] of self length [trade-record-one] of self
1 e: ?! @5 ]- D$ c& R! s6 p   set trade-record-current( list (timer) (random money-upper-limit))
1 u' G" f; n9 X, h6 M2 t7 o- ~  ]* O0 a2 y1 Z. z$ n
问题的提示如下:
/ ~* {8 F3 x& @  R7 `# p# m
5 g5 A) A. w; L" N9 Aerror while turtle 50 running OF in procedure DO-BUSINESS
$ d1 ]! ]7 i  x) Z2 h  called by procedure GO- T+ K( q$ o2 R9 \  j8 p  k
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; c7 t8 o% ?, O2 [* G  X  d
(halted running of go)
) i8 }, N) ?" ^. c& ]% C' i2 i0 [8 g+ J$ Q% b
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~~- ?" s( L5 Z, [4 k* H6 O" h
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! [+ O; y* j/ u# b0 n- g
globals[
7 \2 ^# S0 U0 N+ S* V, Fxmax; Q. L8 H# F  i9 d$ W; r
ymax: j1 _2 v- l5 j, o
global-reputation-list& f- d8 M7 c" U  [9 ^

8 k0 C/ f: f( |- J5 n+ `+ q+ y;;
每一个turtle的全局声誉都存在此LIST
* z8 L6 G- W8 `* H' @: Gcredibility-list
2 s/ ^( |, W' m7 y% f6 y;;
每一个turtle的评价可信度
/ o' I" a+ q; Y* m+ I% \2 h- H5 khonest-service, a: f- I& `& b! |7 B
unhonest-service
# e+ u: |1 t. U+ L! a6 Joscillation
4 ]3 {. E3 R1 v0 wrand-dynamic
8 a% y" K/ S" `, h" h1 ^4 U]) z) O. m+ K: V7 c$ y8 x6 i* {

7 C$ \! K  X& e1 X7 ]4 s  a2 V, Gturtles-own[
7 k: D5 I! r- jtrade-record-all! Q4 C9 M% x8 N
;;a list of lists,
trade-record-one组成
, r+ a$ O9 a9 U7 [trade-record-one
6 V1 n3 i, n( J' o- V! W  X( b;;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. d* o& Q5 L- s) o" B
( y/ @# g4 w$ {
;;[
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]]
) m' W* v3 @$ U- [  Utrade-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]
) n8 X- _2 ^* Y6 Z4 B0 ^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list0 `+ q) z3 j+ _& o- O$ n1 x9 ]
neighbor-total
5 b) {4 g' Q  Q3 ~/ ]  Q;;
记录该turtle的邻居节点的数目: r3 _0 a& [) c9 v7 {/ e% t2 h
trade-time
2 w( ]+ `# y8 T/ w;;
当前发生交易的turtle的交易时间
7 L0 R$ u9 r. c# B# s  N4 jappraise-give5 j5 U6 }0 F. F, J9 s
;;
当前发生交易时给出的评价
5 P5 D( B8 f9 F. |$ uappraise-receive5 a. P" F3 \& n7 C3 q% h) a* c
;;
当前发生交易时收到的评价
; ~; X% A; ~1 ~: `0 ]appraise-time
/ s& y& `$ z! e0 k;;
当前发生交易时的评价时间
4 y$ N8 Q0 _/ ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉& i% a! `' a; F0 P! ?$ B
trade-times-total
1 d  D1 g* o' A' Y0 j4 V7 m;;
与当前turtle的交易总次数
1 M7 _4 P* ~1 ?/ \1 M$ Ctrade-money-total2 a: i  S: C* B; V8 _: O
;;
与当前turtle的交易总金额
3 Q7 L% ~" M6 C) t9 ?/ r8 blocal-reputation
& f4 k* L1 r& Z3 }+ }( {global-reputation
4 o, k  R, x" a# xcredibility
* b4 z8 r3 a! l3 n5 e! x( M/ T;;
评价可信度,每次交易后都需要更新" F  f% k, F: j3 [. z
credibility-all9 a4 }: O8 H) u6 @: v- ?
;;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3 S2 C9 P4 ]6 {

3 W% ]+ |& Z1 O& J% e; \;;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& M$ g) b) x5 O5 H; B
credibility-one
& }$ |) `7 ~) [5 }2 i* t;;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people3 B1 U" Z6 J2 B9 D
global-proportion7 N( p8 ]! [4 M; @% M: A, g3 ?
customer; G( u, a- ]3 n# q* D. X) B3 Z4 K
customer-no
4 [2 T1 `# g, M; Etrust-ok& c8 n7 `  r9 B+ I6 \2 D
trade-record-one-len;;trade-record-one的长度
# L; i+ y6 ]* e]
# Z5 E& i9 O. N3 u8 H0 S/ L( |1 M5 I6 p+ X, g& a; Y
;;setup procedure% [8 K) p! b* A9 e; C

0 a/ J4 T0 ]  [; u$ V' ]/ F3 ]+ nto setup
4 ^* Y8 Q% Y7 C: h3 Q- P: F) i2 ^5 P) ^
ca

+ k; c$ G8 }% i) G, Z
/ a! q8 P; b9 q* X$ F5 A" ainitialize-settings
) b6 l' q- r7 Q( {6 B# |" ^' b

0 h# i) y- L7 k( \  T3 M" Acrt people [setup-turtles]

6 f( w; K5 V( n$ [
- I' d9 p0 s' breset-timer

" Q$ l# p4 Q2 c- g. A: A* i- T. X' n: J$ l8 R
poll-class

; O' A  L4 ~: }! N/ x6 V. D9 C! t! D( v9 J' ?
setup-plots

9 e( N% `- Q/ B( p: u1 x4 v
4 B9 h0 P; w, k* t! L7 Y9 c6 `$ mdo-plots

! R  c  z' {) \% vend
0 \( F: z( z  D) ?9 |$ C9 e
" S9 ~) L8 E4 r! t' K& b0 ~: Qto initialize-settings4 \, S. j4 Q% A( ?' f
" y* @% Y$ i- {6 k  r
set global-reputation-list []
8 c- t+ r2 ^' f0 `9 q7 e
# W+ p* g  z4 t
set credibility-list n-values people [0.5]

) `6 r' y2 s; o3 K: L
, D  `% l  W3 s' y; P3 w% C0 hset honest-service 0
/ u8 a8 q/ ]; u% Y% ^& Q, L
! \' v! }( O6 X5 i  J3 R; K% y! \
set unhonest-service 0
; a# a. i- z) |3 `6 p5 V
/ X& d  v2 p2 Y9 q) h$ ~  u
set oscillation 0

* ]* W; J) K- F4 \/ i3 z! a' i8 [* o- V" C5 Q. B. h
set rand-dynamic 0
8 u  e/ W0 r$ Z* S/ ?/ N
end
) @* {- k5 g. |! U/ N& a  _+ ?
6 c& |' j( n( U5 Sto setup-turtles
1 l; [# X/ V0 ^7 O: I+ `set shape "person"# }' o+ x% {/ }, B; K6 k1 y
setxy random-xcor random-ycor
9 w# i4 _+ i; Q7 b. C- q: Fset trade-record-one []0 a" g# [5 @) S$ V" q9 f

0 h8 V; \# R- B' ^& hset trade-record-all n-values people [(list (? + 1) 0 0)] 4 g; o, ~& q" `& y

1 m( M- ], e% s: p4 |; N# Hset trade-record-current []9 o4 }) N2 g$ {; _( Z0 g. f+ L
set credibility-receive []
4 ]$ Y- B. `; m. O& Fset local-reputation 0.5: J) o8 u! J8 Q; X
set neighbor-total 0) K) ~6 D- ?( N" h0 E8 ?, P
set trade-times-total 0
( c& [- X; ^" }; ?5 W6 y4 Z  hset trade-money-total 03 c$ `3 w2 v; K
set customer nobody8 U' q( H. ?8 ?1 n" ?5 e
set credibility-all n-values people [creat-credibility]" H! k  X% E+ S7 Y
set credibility n-values people [-1], f* Y& O* J4 ~; y0 n% W3 p
get-color
/ j, H  L& x- u( ?. I6 S+ @

/ }4 B4 C( `2 x2 d" Send' J0 ?, y5 d% o% [- s
, t' G; @. T0 ?2 B
to-report creat-credibility! c5 V& ^1 @& ]/ g- D
report n-values people [0.5]* N4 c  U0 Z+ y0 @0 X; B% n/ S
end% S  |& ?) q$ a. E4 H
) Q. Q; F/ t( _8 E
to setup-plots
- o* [0 C) j5 K4 C& Z7 h, J  x! C
' w( k1 I" R& P6 K% k8 ^: |2 d8 fset xmax 30
' L( b" ~. U$ _( [% N

8 ]# N2 v; S  j& j. m2 bset ymax 1.0
* i/ \  G3 L$ r# V2 I6 g

( d; C5 t9 q+ w& C, g) Y2 Gclear-all-plots

& h2 h* ^" o! ~8 k3 E: ^+ [
7 K  C% R( F. g2 g" s( Xsetup-plot1

9 Z/ [# Z- A/ i* q  S2 Y+ H: h, T3 A
setup-plot2

0 p7 n* O+ Z2 x  \! \
) W* S- p# |4 F0 Y3 N5 ?setup-plot3

" Z  ]) O' h" @; Xend) P9 k0 Y' t: j9 }

7 _( q' \8 |; T4 S  K;;run time procedures  s; H9 Z" y+ T

7 h: t/ Z$ T* l; g4 ~: a3 d- z! N' Lto go
/ ]( l7 |; F4 ^; H! M7 I& D
, @( a7 y' O2 |+ Y# {! O! A; h9 m& `ask turtles [do-business]

& P1 D( n: K" }& send5 p9 X# x* ~( V* t7 s$ ?
1 ?  i1 \* I% I2 r
to do-business
' c: _4 W6 w4 b3 y$ i' p

: o$ s& y' S% P1 S3 [3 r$ _* l( M2 F6 ^1 ]3 S+ r* J* K
rt random 360
8 S( P) S! o/ r( d0 `3 A7 y

% h( s, n0 Y7 C& M& hfd 1
2 S+ f- h# |& Q4 D9 l
; Z. F. X- f# H9 e. }/ R* G. R) g
ifelse(other turtles-here != nobody)[

$ a2 J& v4 Q7 j+ U; \0 g
; P  L) f, K- ?' Q$ K/ N( b0 H$ Sset customer one-of other turtles-here

' C. ~' ^3 W. A3 c6 q- T
& ~* f0 W6 G( @/ O# x1 {" P* C;; set [customer] of customer myself

3 p( |. ?& A, b& w0 N
5 U( Z0 H/ o/ l! U, fset [trade-record-one] of self item (([who] of customer) - 1)7 D0 l( }" b: p7 g8 @
[trade-record-all]of self
& Q; a7 g0 i* _* Y* @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! ]0 l( T/ H/ R& c! R. C1 Z' m) n
6 P( K+ r2 m5 y$ p3 w: G
set [trade-record-one] of customer item (([who] of self) - 1)) E  b5 C5 h6 R1 [% B! w2 I
[trade-record-all]of customer
  j0 [0 B- a4 E4 A6 `; M) B; i
% x$ a5 h$ Q: G. q6 c8 g/ z
set [trade-record-one-len] of self length [trade-record-one] of self

% ~1 a! a9 q& b* c7 x$ G) Q$ L
% h* ?% `, U) B5 j: xset trade-record-current( list (timer) (random money-upper-limit))

+ T* g# L( T3 ]+ b/ y
) x" t; e: T/ e  U7 lask self [do-trust]- {0 ^# v( L0 q5 W/ ~; z
;;
先求ij的信任度
0 x/ [/ ^, W5 v1 B$ F) I$ K& A5 _3 D, t
if ([trust-ok] of self)
# D& r) V. n# B4 P;;
根据ij的信任度来决定是否与j进行交易[% X# n, ^( [- l/ G
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* {/ a- S3 u: v; s, E8 L8 m
4 |1 c) `  b4 u5 x# j$ f4 G& H9 ~
[

/ R3 K1 t. k6 {
  v1 {  a$ M: A" ~6 [5 fdo-trade

0 g7 Y1 _8 Q; M' y' E" D2 r. K1 q: \- ?5 X
update-credibility-ijl

; r3 x# F) U2 x, ]0 z# s2 ^* i5 `4 H. l( y
update-credibility-list3 W) V) g' v8 r5 ?# l5 V
  I3 o$ }3 I. v' U

8 \2 v2 m! Y3 m6 u  Bupdate-global-reputation-list
5 j) e( G: }4 y4 ]0 s

: o! g7 m9 t3 h* _8 C2 \; N! ~poll-class
' q6 f$ ^7 y& q% |
+ T- A0 z, F& e8 {- t3 Q
get-color
- d( Y: K$ `- E9 ~  ~

% ?" k6 P# J# c. i" S2 p! @]]
" G9 y% F2 M) Q4 t9 V5 U  F# s- Q$ G/ s
;;
如果所得的信任度满足条件,则进行交易1 v, p) m3 H, Q; A: J" A+ H$ H
7 W1 B# h5 L6 f! }5 b1 q* y8 L
[

3 z( U8 _: `/ r+ ^/ o& ]4 [6 ~' R) @: c) z! _3 w- u
rt random 360

8 o! F( X2 v- y1 l
/ K( c! H" Q! e* ?fd 1
3 g* s% o8 d8 Q5 m! u1 C
# Q$ h2 V. p1 z) F
]

! A0 Q  U1 w1 _2 b7 T, ]6 H+ P/ Y- X; ~, D5 @) E  e5 w9 P  E" a
end

% Z0 Z4 u  W7 d, K% n8 s; }5 o9 Y6 t$ k" Y* `/ O% B
to do-trust ! I. J- e/ ]' {
set trust-ok False! t6 S  T5 o* }8 Q- e8 y
% g) e9 C1 b9 [1 M9 m

8 W' g$ G4 i9 V& Elet max-trade-times 0! o( _5 i7 s5 s- X/ \# m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& Y# V5 I8 N$ N1 N/ @; Y  Llet max-trade-money 03 {; [3 ^/ ^$ H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) o+ T; a7 b# b! m9 {; r, [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( v  ~8 l2 ?6 Q5 F, h0 R. X
$ X, v$ s. M6 Z) h+ E8 W
! U/ g( |+ ^4 z& T
get-global-proportion
& V2 G. [% P; slet trust-value3 Y- y% s( [2 Y: n
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)
* ]+ j. ?9 _( N; P/ P7 b' z3 f
if(trust-value > trade-trust-value)% I* L' M/ U8 X
[set trust-ok true]$ E, G% h: E  @: P
end6 T3 p7 |6 ^9 p( J
' G, s8 x$ q  E+ h: C) H/ e/ h
to get-global-proportion
$ B2 ^7 l4 e" g$ F9 q8 {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 G0 e, o  Z  R4 T% t[set global-proportion 0]2 v8 G- @! x- f6 W$ e2 \- v( `! _
[let i 0
2 d3 v- [+ _, tlet sum-money 0
& D8 I' Y" U3 \+ X' rwhile[ i < people]( A. M( l( e  P" g7 }5 |& z
[* U& J+ E- I) j* u, \
if( length (item i1 A$ c4 \% @( n) a
[trade-record-all] of customer) > 3 )
& C* _. }' k. q' x
[
6 D% @0 b) w/ Z( f* U; Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& J8 y6 \# M+ R# r" y' s. |# v& x
]! J; S( X8 s. i1 g# a
]
+ n5 Q3 W# V) q7 n0 flet j 07 w& ]4 c* P: Y
let note 0
5 Z: l5 b' J5 o. {% M2 B) P5 ^while[ j < people]! Y2 N# S! M7 J8 p, b
[- U  ^0 ?4 E8 |7 |  i& X0 E
if( length (item i, @6 `. J1 u, W7 J" }4 i
[trade-record-all] of customer) > 3 )

) @: M# F" n! ?0 m[; G5 ^) t* B4 F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# @- Y1 X) e( M- l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ u/ D) i: A6 V: r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 Z* H) E# B5 x* @8 K2 g]
% @1 K1 @$ N% ~]7 E3 x" R: t0 J9 k" b
set global-proportion note
: G0 L$ K; z, E7 ]% c5 Q]6 b# J: v: h5 l! a' d0 ~. X
end
$ Y4 W8 A1 M8 M) Q2 U$ F+ r. m- B% f# I; s
to do-trade7 U3 C3 l. a. D+ C
;;
这个过程实际上是给双方作出评价的过程8 ?! d* {3 g7 x4 U, s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: r' \* e  [3 w  i+ P" @* Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 P1 U+ l) }. O/ p% M  R0 B1 c
set trade-record-current lput(timer) trade-record-current; T" ]  B. d. @
;;
评价时间
$ P" W9 L; K1 K8 R+ S6 Cask myself [
! N) a* A! j$ Fupdate-local-reputation3 [/ s( N: D5 g
set trade-record-current lput([local-reputation] of myself) trade-record-current
" ]& S" d1 N7 Y4 r* V]$ |1 L1 K( M6 c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 Y, }3 u: k. P% S9 V: m# J: K
;;
将此次交易的记录加入到trade-record-one
4 L* u+ g3 l$ u" Iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 z% R) A# z) ^4 Jlet note (item 2 trade-record-current )
/ y3 {3 _! ]( {/ ?4 Y% L! }set trade-record-current
. b: M* a( S7 C) P(replace-item 2 trade-record-current (item 3 trade-record-current))

4 w) z5 Z5 [: l; r! U) I$ a4 J2 nset trade-record-current. O& S, _- s: E2 }: I; V
(replace-item 3 trade-record-current note)
9 f4 `; L, `3 _! @: ~3 _! l
: B& |* A  z$ Q" K
9 I" W! H$ I( g+ L# h
ask customer [# l- x, @; C3 {( r6 I! E; `
update-local-reputation
/ v4 O6 f# f2 Nset trade-record-current
6 o2 t: a, _# ]5 x7 V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 g, E+ E: E4 n
]
7 e! t1 Q) B; A9 a: H9 }9 {; N1 s% N( X( _8 k
1 l6 Y$ `" S. F( G: P$ P: M0 e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 ]: E1 V( ~2 t( b$ O4 g/ B$ T

4 Y! ^- x/ Q4 C/ _, \# hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' R, L3 J* v- x, b2 n' m
;;
将此次交易的记录加入到customertrade-record-all" n! e/ y; ~6 e+ }4 p
end
) z" }' W5 N+ r9 Z' ]7 T; ?0 ]
to update-local-reputation$ q/ q" k; Q. F& A0 S8 u7 B
set [trade-record-one-len] of myself length [trade-record-one] of myself
) Q4 o5 ?* F  l7 r( e* [0 {! V' `! ?0 S2 I: N; w1 b  z
. L7 f- q$ R$ G, N3 l
;;if [trade-record-one-len] of myself > 3
% d; A0 U/ M+ c8 ]" l) K1 M! p; Z& o
update-neighbor-total
, y; P2 o0 {4 F$ j;;
更新邻居节点的数目,在此进行
( M7 A0 r8 o- C# d5 m1 clet i 3
( f6 _+ @2 B( }; N8 |4 V" N2 }let sum-time 0
/ r+ l/ ~/ F& p8 T( [while[i < [trade-record-one-len] of myself]
8 \" C& L" U# {- ^  q[2 Q) @) A$ H4 m3 E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 L1 z: {  m/ Q. }; x8 S% J: m3 rset i
9 b1 ^3 A$ o. u9 Q1 K( i + 1)

6 V" _+ y) S+ ]" \  Q]
- c9 [# L- g, Zlet j 35 b* W. ?, X2 D1 h0 ]
let sum-money 0" Y( ]4 e2 M6 y3 P  c: W6 A
while[j < [trade-record-one-len] of myself]
) B" B3 O5 A5 p3 M[3 y0 d' S- H" k5 d: _3 N) U
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% ]! P# i9 d& U+ A
set j
, b7 c8 B0 ]( N8 m( j + 1)

( r7 q. j) o' y* G( t6 n# M4 m$ b]1 k: K2 K6 U8 D% C
let k 3
8 [, I9 }0 I% C4 j9 l1 Zlet power 0
* C# q. p' C) f+ [9 v2 vlet local 0- u5 o0 d: c4 I, L! D# P$ K& {) c
while [k <[trade-record-one-len] of myself]
8 P' c4 @& C( s% U: F( d9 m4 J6 g[
/ W6 }# Y- E9 N- R7 q) @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 w6 w5 W' `! P6 B* Vset k (k + 1)
+ `1 e* [# x$ X  ]1 t+ N]
. D. U: L7 y" X1 L5 t* Oset [local-reputation] of myself (local)
; V# _/ o: _- r" u8 T+ D! d& Gend3 n+ ]9 v$ L' @$ f. w

: L' f9 a6 S, A5 V1 O- [, v4 jto update-neighbor-total* E0 A  b; E7 N9 Z% s

- x  j1 \# o3 u9 P+ w/ rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' k8 e  ]8 L# o2 d, W5 z* `
) m# E9 c' H0 J% e8 C9 ?
& l" h: R, c3 H; [! M2 D6 V% C
end
6 t2 f# ~  G# [. F7 d% |& R
. r/ |! y  k8 e) j! q5 ato update-credibility-ijl * q" X/ z1 X& c- w7 M* P8 U  ?2 `
7 n/ x+ [7 H+ s3 i0 f& Y
;;
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。. D, n% U0 z4 @, P' ^% @9 C2 W: R
let l 0
- u! [  x0 ]9 v; gwhile[ l < people ]
* f7 H2 n3 M: _' [+ [0 v/ E7 f+ @;;
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5 y6 ]6 B& n/ Y* D
[. {4 d% z8 y# i. E$ F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. k. k3 R3 P8 k, nif (trade-record-one-j-l-len > 3)" E; D$ S2 H9 c
[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/ L: ?! j5 {/ b% o0 j' u
let i 3
8 k4 n+ @/ S' u. vlet sum-time 0! O. v+ T: v7 n* Y
while[i < trade-record-one-len]- D% c; W' s1 y9 g8 R% r
[- f+ x4 p# C3 p  ]' U# M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 w4 o# L) I# d/ ?3 Z! Z) _: Yset i
) s$ M3 A0 V4 f) Y( O! y& D' K( i + 1)
: [+ M4 ^9 f2 ?/ f2 X# s
]
( b4 }. ^: C" G/ J+ mlet credibility-i-j-l 0
" Q( r& g, s) };;i
评价(jjl的评价)* K( _, \! ~+ ?  V' G5 ^( O, S
let j 3
0 ]* [! l" w8 a$ z% Hlet k 4
, D8 n1 p1 `. c8 D* m% nwhile[j < trade-record-one-len]
  I* j- q4 u- _/ g[9 _9 B1 [; d5 ?1 Y8 P1 `/ W
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
4 X# u0 S4 N: K# B& O* e( U6 Gset 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)& d2 W5 w# ?- Q5 W# C
set j
# M: m. ]7 P7 z- i0 v- s( j + 1)
0 X2 l& I! N' [- ^( _' O9 Y+ F
]
+ x& m" H& a5 T" L% u+ A* 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 ))& D  ^8 K$ @3 v9 ]2 a. ?

/ ]4 V: S" n* d4 u' B/ d1 w

: w/ _! b! m9 E& Klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! e1 W: ^, J# E
;;
及时更新il的评价质量的评价
9 a7 h8 L# }! A  L# c" J, ]set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# o( {9 O  N/ N9 T) P, J' b  @* [
set l (l + 1)
4 ~4 `$ h" r, i* p]2 ~  S3 W* J" c' \2 b3 M4 [
end$ d  L/ S- J1 f6 |7 X
3 W3 E4 N  X1 o/ \# }; G, z( z
to update-credibility-list
5 `, L' ?6 u- p0 h; ~% {6 S# E  Dlet i 0# X% ]3 x5 q" r& \
while[i < people]- n5 k6 q* u0 E/ h3 Q. G% \, E
[8 b) U3 d# _% q- i. L' g
let j 0
0 I1 z9 W, h0 }) q0 p0 dlet note 0& g% j: |# `+ {1 v/ g. \3 f
let k 0/ n. \9 q& n  t; ?
;;
计作出过评价的邻居节点的数目% y8 B8 U# y4 i( Q* o
while[j < people]
4 [& M% r" m, R/ G/ o[1 Z- d# k9 Z/ r, g9 \
if (item j( [credibility] of turtle (i + 1)) != -1)
9 e- Z, p6 p$ F. R. ~# u8 W;;
判断是否给本turtle的评价质量做出过评价的节点
2 X# ~  Y, ~+ Z% a' O  F+ t0 G% Z[set note (note + item j ([credibility]of turtle (i + 1)))) F9 t; @* ~' T5 B1 _( z
;;*(exp (-(people - 2)))/(people - 2))]

2 ]1 Q# h; T  D- xset k (k + 1)" h$ o! h' h/ G/ c! B
]
7 @* g2 e5 E7 _  q# K$ f) m2 X2 aset j (j + 1)
3 \% ?( j" {4 F& X]
2 E: l6 q$ j2 M: xset note (note *(exp (- (1 / k)))/ k). c' u: C4 O% u/ B
set credibility-list (replace-item i credibility-list note). T$ M' S8 A- z- f/ Q' w
set i (i + 1)
4 \) s1 X9 ?  q]0 C" m: h" R+ f" U. w
end1 r5 g5 \' w  z
& }0 F8 }# y% P4 O4 ^5 }
to update-global-reputation-list% z& E: L! q4 x
let j 0% \' C2 @6 S8 X% Z# B
while[j < people]
9 Y$ k' O: G! P0 j[6 N4 r( q: ]! l$ Z. K6 g8 ^; P4 t
let new 0! Y' [! b& @+ o2 K: b  S
;;
暂存新的一个全局声誉
. X0 @3 D9 I9 S, s: Y. }let i 0
1 A& b$ o4 _& O4 Y$ O4 t8 i7 Mlet sum-money 0
' ~% j0 i: k2 z- L1 t0 ~let credibility-money 0
6 K; ^! {; r% B8 a# ^$ P+ Iwhile [i < people]
" k& P5 t1 I" l' @! Z[
7 ~0 e* H8 u; aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: K1 G9 m7 r4 Q" k6 |, M, ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 D1 T  _  t3 R6 j
set i (i + 1)  @, w+ T( Z1 J( a
]3 s! B& G8 g( C& V, e9 x& N. m
let k 0
4 Q$ |" ~) m9 b# P4 q/ vlet new1 0
6 g! j7 o, W" {4 jwhile [k < people]
+ e" @' N# T  k3 A" g- a. n[* i. ^8 M4 `: v+ }5 \& ?5 i- T6 N2 C1 H
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)' u: N3 W$ u6 i, [5 i
set k (k + 1)( x5 v- o4 N6 W& {$ Y6 `8 Q8 I# o
]
1 F% g  U# W' }% D2 Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 J! H' H- k) P7 dset global-reputation-list (replace-item j global-reputation-list new)" f1 J% l- e+ [( C. |
set j (j + 1)
4 A: v0 V  j$ V$ Q6 Q]% E; v. K" R3 o9 f1 j
end
, j; G; u. ~1 @  J
+ q/ E8 m4 U6 C4 B1 S4 p/ P6 E. f- F8 \

* Y2 E# r7 i3 W0 Y. }6 E/ rto get-color
6 l8 H5 Z! q* ^; @* ]* M+ S- N/ |2 k8 G( Q
set color blue
2 f1 U# T; Q# s( ]
end
2 ^% X  ?2 q0 ?8 ~: {0 Y' R& X$ s8 y% C+ s6 b
to poll-class
! b2 ^4 X( g7 Z8 D9 \" Z8 P# |/ yend
$ h- A5 o6 o7 n7 ~) y+ j& Z8 N1 e7 E0 o9 D
to setup-plot1
) H  I& Q6 g) }/ p5 p, D) V4 o! s; ~
set-current-plot "Trends-of-Local-reputation"

% T' s' l4 u1 W! k8 X4 r0 ]* J1 d$ b* _
set-plot-x-range 0 xmax
/ o, K2 s/ F. M5 s3 r& @. t, l) {
4 y/ C$ ]8 w/ A- M1 O' V" d( m
set-plot-y-range 0.0 ymax

! O5 p& }; {( i5 l" Nend
+ X- u3 H7 K0 I" L) A, `9 I  E. C1 t$ L
to setup-plot2
4 I  Q; H. U, N. q! _( r
4 h+ r4 W- Q. s2 o) A9 L' aset-current-plot "Trends-of-global-reputation"
$ K/ x% }9 r1 f

8 Y8 M% ?2 z5 y+ C% ?set-plot-x-range 0 xmax
/ |; E+ l  w5 L/ y  `' H7 q! Y9 [

9 O0 w. k) ?5 y9 k6 k3 k- Y; Yset-plot-y-range 0.0 ymax
! P' S$ B* X6 e' Q! G7 j
end6 j7 ~; _  b0 ]( b& r  Z7 h
5 U, [! W  C0 l8 ]1 b4 W
to setup-plot39 f. U( P/ B. ?( D, {
5 I/ u  g" G9 M) t* U( s6 v
set-current-plot "Trends-of-credibility"

3 U- ^( Y+ _( i; B2 j. ^
6 T) M  k$ T$ @set-plot-x-range 0 xmax
4 \9 |" f* A* Z9 D. c7 E' S+ |& k
+ D( ]9 c4 _$ d0 p; y
set-plot-y-range 0.0 ymax
) G3 l, p! t! {4 C* h
end1 ]3 j, }  L% R4 R, x! I

6 c3 R8 P- M5 A9 dto do-plots( J& @! `; `  W% R
set-current-plot "Trends-of-Local-reputation"# J7 w2 a/ I' N) I$ {
set-current-plot-pen "Honest service"( X( g+ l" A! i6 W
end* u( }- k1 ~: s2 W0 b( q: y
1 J& n7 J8 z+ a. 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.
! {! _3 F) F9 E* t9 {. c7 g4 e$ v- m' _% a1 ^, [
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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