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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:( u$ c4 N6 }# \$ c
to do-business 7 s/ C' O/ _+ p8 @* `, w7 u- S- Q" G
rt random 360
' v- n7 @3 p5 y* f fd 1
% c+ L- W1 E4 b  o' d; r ifelse(other turtles-here != nobody)[
' @) Y+ b$ i1 F1 i% n3 ~! a   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.0 Y& S9 y2 \2 @5 E" b4 \
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - T( v' a. G8 z6 g. P9 J
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 S6 W' O/ \6 O8 f   set [trade-record-one-len] of self length [trade-record-one] of self
5 Y5 m4 _- H$ i   set trade-record-current( list (timer) (random money-upper-limit))
3 l8 ?* L2 K8 a* z4 b8 k8 E- H( h5 ?7 p& A+ m0 N! u6 Y! s; x
问题的提示如下:
  P2 Q3 M3 t6 U0 O( T! _4 C& W5 W  [3 F, |
error while turtle 50 running OF in procedure DO-BUSINESS7 q) R. R" |, ~' T0 T
  called by procedure GO
9 s' {+ a) N# Q6 t# qOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ P+ t* R& ]4 k/ c- y* l8 f% X1 o/ z7 E
(halted running of go)4 ~/ ^, `6 F3 u+ l1 E" p

! v/ v+ t4 P9 o7 r3 C& e8 W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~~: b# }4 E5 `  h3 D4 V; f: l
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
1 K- W& i- Y6 Kglobals[, \% C- Q, W4 v# o$ U
xmax, \! G- k! M0 n: y- Q* k
ymax
3 g+ a" n3 o  _: j0 _& bglobal-reputation-list  D9 R- O& q  p7 P2 P& S
0 v( R4 z' w9 D& x, R
;;
每一个turtle的全局声誉都存在此LIST5 @4 S3 p; Y, e! D( e. O, ?! A
credibility-list1 m4 {0 P% D0 z; q, G$ `0 H
;;
每一个turtle的评价可信度
( |; S$ ~$ d& k$ s- Whonest-service
& P7 }* L3 |! P* A2 d, dunhonest-service- D1 f2 t' o8 h4 H; j
oscillation9 R/ W) S. U2 [3 I
rand-dynamic
1 {1 J" ~  v, p- X: v( T# n$ v0 i$ N" A]
; q+ v/ B$ o* F3 M: G! W1 [; ~5 p* J" P% V5 [. Y+ ?0 |' E
turtles-own[
( j" x$ v& ?: T! {trade-record-all
3 E. I+ x" y" H' ~" ~;;a list of lists,
trade-record-one组成( P: [( g3 c) F2 G! c9 B; m
trade-record-one7 [' h8 Y  a3 r. `2 o3 Z2 m
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% X4 B$ ~( F$ A5 n. q
& S* i' X4 Z. Y& p; @; m! n
;;[
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]]
+ y8 l2 w( G* Y( [) j4 V) S3 p$ q  atrade-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]5 a7 ]! r' n, D# m9 |% T
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list9 {4 p: y0 f. e. M# [' |
neighbor-total
( ?% d$ q& y+ ], h# O;;
记录该turtle的邻居节点的数目3 j. @1 E/ [0 L% D. m
trade-time
! {, b/ m9 v; v3 r7 r2 L( ~# \* q;;
当前发生交易的turtle的交易时间# \# D+ H* b- X3 ?5 f2 k. T
appraise-give% Y* Y8 H6 m  o* C; t3 C, F9 t
;;
当前发生交易时给出的评价
6 W6 D. P5 z. t4 W6 mappraise-receive
$ I# a) B$ _" W% T* G; E! i6 D;;
当前发生交易时收到的评价7 n2 c: m; U/ ?) X
appraise-time5 k) D8 K2 Y. f, }+ T& I
;;
当前发生交易时的评价时间
" i. X7 h  F0 U& S/ C; G) j- ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 r: n8 Y4 S+ a1 _# Y5 ^; h7 R
trade-times-total5 b& B" G9 e' J6 W* C4 S2 \. |1 a
;;
与当前turtle的交易总次数, W  b+ [) Y' ^& r! L- d
trade-money-total1 c: G, G# n  L8 f, Q
;;
与当前turtle的交易总金额
' s- T; P9 u! n; tlocal-reputation. l+ Q7 }/ y8 |7 W% H. p0 k
global-reputation
4 O4 E" z3 F. l' B, {, vcredibility
, B: A, K9 Z7 P& e# r  |" |/ B;;
评价可信度,每次交易后都需要更新7 j( ~/ @7 Y, m  b- O1 Q& _
credibility-all( D% }7 J' r. p
;;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 Q# `; T# e( q& n

1 j1 B, w( G( u: A2 J/ l;;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! l  u  h3 y- D
credibility-one
$ a7 V8 w$ J- G/ o( D;;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$ d; k0 z* }+ h; o2 h% k) A
global-proportion( l1 b% G: t9 N  H0 j0 t
customer
* T0 j3 ~0 O8 s" Q9 R2 u' ncustomer-no
+ B- X: U# I1 K: qtrust-ok( p$ m9 Q$ H8 V+ i. G
trade-record-one-len;;trade-record-one的长度; W& G2 [5 Q  ~$ R  }9 ?
]- h5 P! j( O4 H% `

, {* B0 u* I, k' s# b! e& I2 X;;setup procedure
- J' }% c8 b3 e* U$ C, `
, L5 S& }- C, x3 w6 Cto setup
! W' i2 V! q0 ~. Q1 v$ G' ?9 C/ g3 F& D9 `% ~. E6 b7 k
ca

3 F; D4 x) I2 I( c0 ]$ U
$ ^3 M2 [& n$ }* I, B1 ^& dinitialize-settings

7 Y0 M3 o9 E. I( F% ]+ q1 T, {% t& R8 p9 T' `" |! ]9 A8 a
crt people [setup-turtles]

0 z- A# G. i3 l9 Q" H  d, e" }$ f  T, T2 m- f# P# e
reset-timer
8 A5 J2 i- }. }( p. p" B! H! P3 R

; M' q5 S. C, Y; }6 j3 ipoll-class
2 q1 Y0 Q) }/ H5 o7 |

: U: A' Q/ w* qsetup-plots
+ M+ c, R0 {% \/ _
7 W8 d* C- _) f4 Q
do-plots

* t( k% e3 E$ V& h, h: zend+ Z- }. K0 f3 M# {2 z. N* ~+ \

6 B- D, |% N) d  E2 ?+ Q% ?to initialize-settings9 e6 F4 N+ B1 b$ W3 e9 \. |; l& p

5 j+ y- S! F. h; V( Fset global-reputation-list []

& @( |7 D) Z; Y* q* G, a: |+ |: F* W
set credibility-list n-values people [0.5]
+ b7 G! [$ F! _. E# D5 w% V

% P$ o9 u" m# c( J3 mset honest-service 0
3 U9 ?) w" z8 U1 _4 ?7 `

0 R$ }7 y% S, r4 g6 Rset unhonest-service 0

, z/ R! u& i5 }# J+ t3 u5 `% _) m% {8 H& G( ]1 ?9 Y( R
set oscillation 0
% r- m, h3 |. R! H. {

, \- `  v* l& D/ A/ bset rand-dynamic 0
7 V  s( o7 X: Q+ E
end
( ]2 i0 b& ^7 s+ @- D0 G- K; [; w" {$ y- [3 A
to setup-turtles
9 {/ x1 [4 u/ L9 T8 I0 m" |set shape "person"
- I/ F7 o  \% F# e: J8 zsetxy random-xcor random-ycor
( w1 Q9 I0 E! C+ s0 x( B4 `( e# I4 I* }set trade-record-one []9 L8 n3 l  L  `' T$ j
. Q& a+ h4 }! c' t( Y( q' C
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 f1 ]! P7 N% ~5 w& F/ w+ F, X4 N3 v) D

- }2 Z+ V. O! E/ Z4 j7 M. Tset trade-record-current []
! `0 z7 f/ o1 @3 F7 c- K' X' y: iset credibility-receive []
2 H0 F9 c) m: I; E) Y* Pset local-reputation 0.52 w: j/ _+ g  Y) Z
set neighbor-total 0/ s8 g/ o' q9 H+ D0 {) l+ g
set trade-times-total 0
) e, {' ~* Z9 R2 u$ Uset trade-money-total 0
9 r5 m0 |( e) @1 g- V% Xset customer nobody
* z! J0 R+ o& P4 r7 C. V/ w7 @% rset credibility-all n-values people [creat-credibility]
9 n. ]& ^1 q: N, [; F0 F8 N2 qset credibility n-values people [-1]5 Y' p0 }, |- f
get-color( h: M8 a8 r9 b, s
% }7 P5 ~3 T4 [4 A1 C% B
end* Q  S' _4 _! _6 _' j2 e. ^

  m* {' b, q! l; M& vto-report creat-credibility
  b. r2 y5 ~+ L8 t' Vreport n-values people [0.5]0 \$ D6 W9 g& T9 ?7 Y% D4 z  r$ C
end
$ G& F, A, J9 h0 W# g+ s0 k* q8 O( g3 |, H# C8 X4 H5 e& k
to setup-plots
% X9 K! @, _: M& }' k; X
3 a5 b! f. w1 fset xmax 30

) ~$ n  J1 H( V  q  y! P/ Q3 C
2 V3 _' J/ z  ~: pset ymax 1.0
* @" Q5 w, C; v% A

+ M" M$ q* C. w5 Uclear-all-plots

4 K/ \2 I: Z/ X& I4 a% @- N  D! p
/ Q/ _2 @8 n4 ~1 W/ Y8 v/ e$ P' `setup-plot1

% I9 e% T- v( A. a; C( r4 o/ q1 D. ?
# X  `9 D$ v4 m6 S7 [setup-plot2

1 [7 m) H7 c9 y- `. k; B0 ]( q
+ M2 [8 G7 j( o7 y: n4 Z4 isetup-plot3

: @, n3 `8 ^+ O' H' n4 \2 |4 ?end( i9 q' E% ]* W. ]0 ]* ?
% F; ?3 ]9 Q: e5 O; l$ b" e
;;run time procedures
) [8 \- m) w7 ]; o% C% C
# s- _7 \. t3 J$ qto go
2 N9 k, ]! I. {! t( p  c' B! W
# y0 n, o$ k. ^  g. Fask turtles [do-business]

9 c, O* U! ]  }; n- z8 D2 lend
8 I) M2 \. b0 o# j; k  E' P+ p+ G, s2 h( `
to do-business
% K4 \! c0 R9 f( U! D* F
1 X* O: V- ^6 y

& \; y$ K7 p" i- W* {" Y$ D8 t; Y0 j2 art random 360

9 A3 P! \$ n( s0 s1 T2 m3 D1 @/ g2 }% K% }+ v" |$ \
fd 1
( ?* @9 y" n, e3 E/ I+ Z9 @9 [

: V/ P/ z; h( k% e4 sifelse(other turtles-here != nobody)[

2 S5 f, }7 M2 b& U6 S
$ a. t: Z- x0 qset customer one-of other turtles-here
* N; a4 [  P6 D/ C- o

+ p6 l( I" C1 T0 o& K;; set [customer] of customer myself
# }9 l3 X' a# N$ s

% }. W. v2 x' g  |; J3 jset [trade-record-one] of self item (([who] of customer) - 1), I& d% @: K4 R+ k2 E1 T0 T# U
[trade-record-all]of self
5 l7 ^( E+ x- Y  P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: ^5 x1 T& _: b* o/ B
3 ]7 P7 h7 Q. x# D4 bset [trade-record-one] of customer item (([who] of self) - 1)
8 V( f# ]* \" o+ d3 K[trade-record-all]of customer
4 C) s& }3 @0 j2 }% X3 @

8 K9 d: y/ a6 cset [trade-record-one-len] of self length [trade-record-one] of self

. X3 G2 o/ V, b1 I+ E7 O. \
( q' Y, h6 o" M; fset trade-record-current( list (timer) (random money-upper-limit))

; M; @. w/ Y: H( ?* I/ ?+ E) l4 t. X2 \; r. d. b8 |
ask self [do-trust]5 R( i4 b! u1 u! t/ w
;;
先求ij的信任度
4 [" F* C) M5 f6 n1 t+ z  s+ K& a8 @; A
if ([trust-ok] of self): y# t( D7 i7 i4 L7 P; Q; X' v6 ^! ]- t
;;
根据ij的信任度来决定是否与j进行交易[6 f: |- w& g! Y4 ~. B
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* }, \4 H; `& K$ X9 c9 U6 Z
/ O1 y' D1 _4 g) M
[
" B& {9 t* }, x; G" S2 y

# h3 t8 H* j$ h+ J" B  [4 P7 zdo-trade
9 w% f4 Z4 k2 k
" B( Y$ K5 e8 T! v  ~' D" h
update-credibility-ijl

) e0 L7 P( l* d/ k" v$ F( J4 G! W4 d. V9 F
update-credibility-list
9 B+ v/ Y0 P  N

8 c/ _+ U7 U* w: W) g
  S/ g; _6 |. Y( N# w1 [update-global-reputation-list
) z8 z/ F. R0 \2 G
/ g2 `! {0 q& D! d* s3 j8 n" c
poll-class

  h! ^8 j7 w- y. {( S& e; P5 x
2 T* p* e- X* N% o# r+ d* zget-color
  u/ z! m" A! c) p! Y/ F' o% L, Q8 t
2 `$ F8 X# c6 p2 u" W! N( k
]]
: P( E4 h3 r$ r0 {* \9 M! q! b( O+ _4 F. |2 g! k
;;
如果所得的信任度满足条件,则进行交易& k! G) Y- w( X# g7 d
; j9 X5 q7 w6 e/ I* N9 h
[

" g7 D0 @9 j3 N( t/ N
' m, [+ Y. d  ^" Grt random 360

) J6 ^! E; i: F- s! [8 E+ s$ u" j3 y2 }. W9 G
fd 1
5 Z- W# k$ o9 l0 s
' Q. W5 y/ J# g1 ?' J
]

. \' Z2 Y; e% {) H0 A5 u8 D! X% i: I, }5 M& t4 W; J# M' v
end

, I! p% o, Q' Z6 a
5 V- s, ]6 z$ tto do-trust , y8 t! \8 @4 N' {( u
set trust-ok False
7 P; M$ @! h+ `- V$ C- l5 I" H
* j& C7 m, A: R* W, g, ]
$ A/ f0 `1 i# I2 T9 K( b# O; m$ B5 O
let max-trade-times 0
0 o# ?. h* |& J" W! P$ O. Dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; {3 ~/ U& C: P3 w+ Wlet max-trade-money 0
& }. J% l  H. c. h. _  z, L6 mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) C5 l: B% Q) F& b& g% A, [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 J9 c- v# T" F8 D0 j3 E% \# o8 Z' j+ P7 _4 d- L

0 h( @3 l1 f3 D8 d7 p) Eget-global-proportion( V" w7 q$ X- A$ }4 B& a1 L
let trust-value, ]2 Z' `( ?' s, Q: v
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)
' W  X. p  x/ A
if(trust-value > trade-trust-value)
! }" y$ N5 r! S! Z0 z0 B# |[set trust-ok true]7 c6 ^+ M- F* U! H
end
. E9 J+ \. Q+ q2 c4 j6 P% M) O: l# S7 d) h5 S# t4 E
to get-global-proportion
/ a; J6 T1 h6 W" d( M  [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 C- G7 |# A- u; q5 a" w
[set global-proportion 0]' S( L6 {# d( O# L7 u2 c( x
[let i 0
  M) L6 t- c/ g$ ^4 flet sum-money 0
8 O0 u/ `. M- Q) m" c* g3 wwhile[ i < people]
1 R3 s+ C8 L3 I" ~, b% O6 d[( @$ M* r5 A! Z7 }& z
if( length (item i* f% c$ ]; E  D- b0 S5 N
[trade-record-all] of customer) > 3 )

' Q2 h# l0 ^3 r: G[
0 H+ t. Z' B! x+ ]% nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 Q0 v. o- H5 F( f0 J
]" b2 q% N* ~& z0 k' }
]
) i. O7 d% j/ j4 x2 Q3 ]- h, r. a# v0 P4 plet j 0
# E' W9 ^& a" p# M3 ]6 X9 tlet note 0
( i* V/ P5 x, m) Q' w2 U# vwhile[ j < people]8 \) A: V% R$ C
[
: m, w* u! H  ?if( length (item i' h0 m: |, s  m1 i% M
[trade-record-all] of customer) > 3 )

% T' D5 f" y8 Q; R& I[5 b, E- ^8 e5 a+ Y  W% g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 ~& l- m3 j# [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( Q8 S, |3 P' Z; b) x6 _7 X6 K2 b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: ^) o" M) I8 I' U2 `& j( Q7 i]
. E; t" L! T6 q! @" e]% I. E+ g5 f6 m! L- }
set global-proportion note
1 e# G9 ~6 `  j* K8 x8 h; z]% w$ c* c" m& a( ^
end
+ @" a1 o- \, g$ _
2 [- u3 ~0 ^' q5 Y% `( c0 ~to do-trade
; E; c& N! x* L3 P8 v;;
这个过程实际上是给双方作出评价的过程& V  h2 z9 v! t  f+ S- Q# z# H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! X# G1 N' \+ }6 Eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% \7 ?# a: D) C1 h+ B  {3 Dset trade-record-current lput(timer) trade-record-current9 r% k* b& E$ T6 ]# A' B
;;
评价时间. }# e, X" Y# v( z( i7 X
ask myself [
. L# ?. h. i% `( dupdate-local-reputation
3 o1 T2 }6 z/ Z' E* y% S8 Vset trade-record-current lput([local-reputation] of myself) trade-record-current6 r; J! G  P  Y7 j" p3 R
]# ~- O+ m- l% `% \1 h" S4 [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 k3 G& [* ?  c" R;;
将此次交易的记录加入到trade-record-one$ M) J( |! W; }: W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# a* R4 D( C1 n, K: A6 B. T
let note (item 2 trade-record-current )+ s) P# ~9 c) C$ a) N
set trade-record-current6 A1 L6 _' r& \4 A! J
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 E! g; u3 s0 X5 m( Q; {set trade-record-current  ]& I+ \1 B% p0 z
(replace-item 3 trade-record-current note)
' Q0 y% x( Y7 V3 ?  W, t& m
. j$ g9 |0 Z" \" k& O2 u3 M

6 k9 T' D( e# T9 jask customer [: a! y2 E- @" s$ n% P
update-local-reputation. `! ?7 ^$ a9 o; y0 P  g
set trade-record-current! k4 h2 s" N- j6 X6 q. a3 X* c8 @& B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& o# J$ M  H* ?  e+ E. m]
, C: ]% Z/ e$ u: @& ?$ u( M' H$ k) p
. ~" l% F' h; x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. F. G6 O& b$ W+ y* S
3 \+ F3 R* r) W, ]9 v9 t5 b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); s6 I, }8 Z8 c1 Z
;;
将此次交易的记录加入到customertrade-record-all
" V5 n& E+ Q8 @2 Rend
1 Q4 ?8 \' `, i7 z& Q
  c5 |" @% y: P. K( x6 Nto update-local-reputation1 Q2 R4 Q2 [" ^% W( T4 ?5 D
set [trade-record-one-len] of myself length [trade-record-one] of myself2 [! l6 F9 S  O9 g0 G

7 Q2 E7 W, c" u( U3 v) M8 }( }  h$ r; w* f; [$ \
;;if [trade-record-one-len] of myself > 3

3 O' y( r& q0 r$ Kupdate-neighbor-total
6 @" K! ~  R; Y, ?;;
更新邻居节点的数目,在此进行; U: x  B* j. A4 d4 w( C: E2 n
let i 3) Y" `1 t$ M3 v4 U
let sum-time 0( p( E4 r  T+ B& E2 A
while[i < [trade-record-one-len] of myself]
7 _: t5 R( _/ c& u; o5 [! I; A[
0 s0 w1 B+ z* H  n! Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 Y7 s! Q8 a! ^, `2 j
set i
  M5 n; V; K& t* H( i + 1)

, ?  P( q% U' B1 d3 {6 o0 J4 z, {]3 H6 p, Z8 M2 N6 H$ u! W9 T
let j 31 _- A9 o" A. I8 X
let sum-money 0% `' I( y: c  C# m! N' d# \
while[j < [trade-record-one-len] of myself]: `2 _5 \, E  D7 R! W  r4 V. Z
[
: ^$ N+ J  k; W8 x2 |& O3 Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 X' i: X; u' ?! {# rset j
3 C9 o2 h9 R! y6 i/ R( j + 1)
2 b! @' \8 ^- U& i. ^- F, _! @) i
]
: E8 R* ^3 \' q  [2 }let k 3
% e4 C8 ]3 \4 B: l- qlet power 0
" q, _- S9 V. Zlet local 0$ I7 A7 d; ?0 ]; y2 T
while [k <[trade-record-one-len] of myself]
8 d- z2 W# X; Y5 h[" @/ t7 T( u( c+ J" p
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) : _4 A1 x0 F$ I4 I
set k (k + 1)
1 _" t# n7 O- `$ F' d]
# i5 z  E9 y+ a7 X9 H1 P0 jset [local-reputation] of myself (local)% R# Q- h6 p! ]
end& R% Q; M0 l/ M: A& [

7 A. a6 D% @  E6 k! G8 e( fto update-neighbor-total/ W( Y( F! D  W. I. A4 O+ T- e# r

/ A$ P$ H  D! _1 ?. O, Q; }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ a" v+ f: |  U$ Y* c

4 E, i& [3 }- @' W% M1 x, I
6 @& v% J/ p4 T. ^; |# j! W
end0 [; I; P6 J" \* M
) x. Q9 @0 {# v. e
to update-credibility-ijl
7 ~" X  F8 {" A# K. m( ~7 @6 N7 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。
  Z$ U/ x' C; llet l 0, @( J$ Z( v5 M7 _
while[ l < people ]5 j0 G) U. U' a* t) K$ 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
4 a) n+ f5 O: H/ L, o9 y3 x[6 f3 x+ Z# P/ X3 G$ Y& R5 h  m& [3 R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: M6 k7 \5 [0 ^7 Oif (trade-record-one-j-l-len > 3)
6 A7 A) {2 x, l" q[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
: C$ I: U# T! }2 L  ]* E, _let i 3
  x: V/ t* C5 B3 q6 Y# C! }& L% qlet sum-time 0
6 i7 x; @; Y# ]2 ^while[i < trade-record-one-len]- S- r) \! c* l. R$ p
[
9 K5 W% q: f# N* ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, U! X2 }$ ^' ^+ v8 [/ p" Y& @, Lset i5 ^  i; i1 O% P  j& M9 n
( i + 1)
5 b( B7 l' f, [. m8 @9 I; g, a
]# g+ [$ _/ z# [
let credibility-i-j-l 0
) y6 ?' R7 x! t( y;;i
评价(jjl的评价)
( Y% M- k( {' F7 a8 F# z6 tlet j 3
  k* G, b  @5 V9 x  zlet k 4
, L9 c0 d. N1 a" i  W* o1 Iwhile[j < trade-record-one-len]
  G" H: k3 X7 \% ]7 h6 |7 f[
3 r4 Q- E) A1 V0 j9 Y+ q& ywhile [((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% x$ }2 l/ T3 z2 k; i4 E- ~6 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)2 l! {) ?# g' ~* R
set j' A4 B; a8 I; \- u. b8 p+ Z* `6 J
( j + 1)
0 ~% p; y0 _4 L: |3 _
]: }* b' P4 {* n1 _
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 ))) a0 A6 J- g, U; g( u

8 ?, \$ g- e5 @/ _

9 s6 Y% ?( I7 k# E) {) klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) \7 k* v+ k# X0 i2 T( x* |* R% Q
;;
及时更新il的评价质量的评价
: s! ]) E2 J, y( |) d0 \) ^1 Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 S9 u; p" z; m7 |$ ?6 ?set l (l + 1)' H: u/ y8 o7 A! h. S: z
]
# e, F0 E7 X# Yend
$ h) z# C; t! b1 f2 |( c1 \! z9 R3 R, T! l! c
to update-credibility-list) m" P& M; j* J$ l4 P" x0 A3 ~
let i 0$ f  d, e% i9 l0 ?! e5 R! j6 ^
while[i < people]2 \0 F) i' u! i0 M9 F
[
$ x2 v, J$ a6 i" p2 p4 u; Z4 X( X9 ~& alet j 0
# ]. C$ R' `9 p# b- E  `3 Blet note 0; `. w+ l% X4 k6 f
let k 0
# W5 N' ^. @4 V7 \8 p;;
计作出过评价的邻居节点的数目
( g$ s: t: L" y, b, y- }/ [while[j < people]" h4 a0 O0 t! Z( x
[5 C, ~* E" H# C5 F$ R2 S) X
if (item j( [credibility] of turtle (i + 1)) != -1)
) `6 Q4 ?3 G9 \/ a; [;;
判断是否给本turtle的评价质量做出过评价的节点- S1 \$ G0 {( a; V+ V# Q. X; z  W6 D
[set note (note + item j ([credibility]of turtle (i + 1)))
+ Z' W" A- b$ |4 s; }# P8 i;;*(exp (-(people - 2)))/(people - 2))]

, x& l4 R& e- {0 d+ w2 tset k (k + 1)4 U- {) D: ]8 Y" P; T7 Y
]
7 _4 y8 f0 w! _0 cset j (j + 1)
8 o) E6 ~& U' h" y, A- [, {]% |5 l" k# Y3 Z% z
set note (note *(exp (- (1 / k)))/ k)
$ a4 N! W7 l8 \# o. X! f0 Xset credibility-list (replace-item i credibility-list note)
; x7 x# ?6 {& K9 N- ]) v$ {  aset i (i + 1)
) H- U( K  g3 c; t- H]
2 G8 A# {: l9 F8 T  m! y! l* T/ Tend
' Q) P/ h: W" @* b/ x) y" }2 G: M# V8 ?' v3 M/ q! r, |
to update-global-reputation-list9 f+ p% r# p$ z6 Z6 F6 g7 P: V9 w
let j 0
: o& h. A% }- l! }+ P5 K% Qwhile[j < people]
9 Z; m4 B/ e* ?0 G6 W[
0 W8 ?8 G1 v, A7 E" n& ^+ j2 Hlet new 0  L  w* m4 v# l/ [* u& t
;;
暂存新的一个全局声誉
- X( Z& }" S) C" p  G) Blet i 0. n# h5 M5 b6 i  F$ D; d: b
let sum-money 06 c4 G! Q4 m8 H- }" L& k8 {8 b* X
let credibility-money 0
; e8 O+ e& p2 t8 I$ cwhile [i < people]  s" w; V% @' c$ t
[
0 H- g: T6 \1 ]  vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ ]# f) J8 I9 v6 pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 J5 |, W( D( w3 [  X
set i (i + 1)! o/ w( l5 |6 n  Q  t
]( Y  w0 Q3 A1 y. N
let k 0: D9 x- G, f/ _, f
let new1 0
% Y0 o+ x; ]& }. f' x2 U# q& Fwhile [k < people]
/ V* E) |2 @  Z: V[
8 ^8 a$ U# S$ a& I" [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)% _0 D1 J( W1 \( Y3 S
set k (k + 1)6 Y; d) J% ~1 [) c
]
8 E& H" P) s/ d. Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 ]. T9 ^  S! `7 ~3 S# [/ y/ h
set global-reputation-list (replace-item j global-reputation-list new)0 z' x* W3 H& U1 r9 I
set j (j + 1)- {: R+ L7 l$ e1 `9 `, d0 a: o
]
4 ~; P' }- t' [  vend
' ?/ h2 i5 s+ l0 v7 _) L3 ?/ G& B1 p7 g3 f4 ?; V/ k- P4 G, O9 f
/ u: @' Q& R+ Q) U  J$ ], ?5 W" _

- F  @  E6 }/ k6 A/ }1 R4 Bto get-color
- O1 r+ K- r' o8 z2 a' M" p" i( G) I
$ G) t+ z% |- L1 Z7 R8 c3 V8 y+ ?( cset color blue

$ l4 V9 `& S% f- S* ]& ?+ I3 Qend9 q% `( x+ B) T3 o# _

9 ^- U, G6 o' I5 o/ Z4 F1 M; Sto poll-class
) K6 A! x7 _5 u1 a+ T# pend6 B' U8 Y% }2 L: J6 Y

+ k. X4 V2 O% H2 G7 T: \/ Oto setup-plot10 v, \2 p# q! t2 G

. h# Q  D5 V: q% U4 q. Kset-current-plot "Trends-of-Local-reputation"

3 w; ^' O- A4 a; Z  i6 r5 o; o+ V5 D
set-plot-x-range 0 xmax

  P7 ~+ r1 n- p
6 l) a5 J2 H0 d. ?% J* Z8 zset-plot-y-range 0.0 ymax

7 g7 \: D0 \5 }* n# _4 j( gend
7 e% E2 t; p# o' m
4 I; M8 H1 V) Y+ H) a5 b/ Tto setup-plot2+ W! }; t/ q+ }( _: c

& j, ]* \& D1 W( b* l1 z$ P& f% ]( `set-current-plot "Trends-of-global-reputation"
- o+ o6 x# R& \* l* d5 `7 l

/ P9 P& J# F% o! Iset-plot-x-range 0 xmax

) n; \: W* h, n  P3 D
- k/ i0 b  i% `" R. r- s( Iset-plot-y-range 0.0 ymax
$ }8 \  A6 p2 U
end
/ ~( O1 ]4 d7 p; t- l: D
- p/ C$ ]# ]2 M- R  Eto setup-plot3
0 E1 w8 ?- r( F$ K8 V# Y
1 b! m3 g9 D' G1 t. P* O* Uset-current-plot "Trends-of-credibility"
' F- i, I- [4 `  ^4 c; @

( h8 g* ]8 c% c# z* ~! o( e* m6 o- rset-plot-x-range 0 xmax

7 u5 {6 F) {  U! t5 E
5 R2 v7 x7 t/ rset-plot-y-range 0.0 ymax

: r# e8 }9 t' k' V4 [0 Send
9 p/ x0 \- K/ G* I1 A8 n: q0 D) r- Q  m' D
to do-plots
: h# t# j2 j* b' `, d8 k& Rset-current-plot "Trends-of-Local-reputation"
# O+ g* p1 l  G$ k1 }7 t9 @2 tset-current-plot-pen "Honest service"% g- o/ t- x3 q/ j
end$ v/ a/ e" M. {" ~! n

' B% i* U# k# I) Z. k/ f- V[ 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.  d4 `7 B4 L: q- S. _. K( E4 P

" B( ?8 r7 \9 i. t4 {$ t& g2 G' v+ L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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