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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:2 s5 a7 n: {) Q/ L
to do-business 2 t5 K' Z* Z5 {( j7 x8 ?6 ?4 z3 b
rt random 360
" k% M# X7 C9 T! W2 T9 H! e fd 1+ v3 S  l- ~7 ]4 [7 A
ifelse(other turtles-here != nobody)[* }( I! l) M6 ?( W0 @
   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.. V, H: K) H) |9 L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " w, [6 ]& _1 c6 V; G. e% e& }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) B" z. y$ \& v- I0 l   set [trade-record-one-len] of self length [trade-record-one] of self0 |' V( `  s  f* {9 P% }
   set trade-record-current( list (timer) (random money-upper-limit)); g6 x  X* T4 H* M8 r+ U+ L
, s( C* L) S4 P
问题的提示如下:/ @, ^% K. S! q# V) U/ l; S

! V2 }5 b) W) f" |$ ^2 Q5 O5 W) werror while turtle 50 running OF in procedure DO-BUSINESS
; ~* h  J8 l. |1 m( G& y  called by procedure GO
# B+ |0 X# N2 q! D# a. lOF expected input to be a turtle agentset or turtle but got NOBODY instead.% B/ q+ L$ q: c
(halted running of go)' h* T4 j) r* z

" h# g' Q* ]3 z: o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~~
6 O8 i* m1 d% B( G. }  A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: l+ Y8 h2 s" W3 a6 }
globals[' `6 I/ |+ F8 a- ^+ k1 q
xmax/ \0 h' U# s! _- W! A  m/ t- L
ymax) k9 t3 }7 w1 Q" j. R, ~: H1 M
global-reputation-list
( d$ D! H6 e: |6 d: ~" |
; l1 I" B& u. W+ Y: f/ f. t8 y;;
每一个turtle的全局声誉都存在此LIST& W0 Q1 R/ @% u/ B2 h6 ?1 o
credibility-list
, Q6 C, i/ }$ U;;
每一个turtle的评价可信度
5 [1 }3 ?0 v7 Y, s/ ?' i8 N% Phonest-service/ e, C; s' e* O& }- @; s; j9 X
unhonest-service
$ M- f; E2 j3 J8 e% [oscillation! i# u4 i9 x! ?+ t8 o+ G
rand-dynamic# q9 O. M1 w9 s0 m& \
]5 r8 g. C, M* H- v7 L$ l
  f* k% C: y6 \& g+ L
turtles-own[" p3 k* o2 K( ]& ]9 e% k
trade-record-all
) f7 Q% S' C4 n2 X" ?2 `+ ^;;a list of lists,
trade-record-one组成8 b3 m$ B$ ~# Y5 O% ?- v9 c
trade-record-one
8 b, O, e  o3 `& ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* A( H) ^8 W- k$ b+ x
" V) j8 O0 A0 o; V
;;[
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]]& \0 `# J) n4 D- W
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]7 N$ d3 X2 V. v' Q! }! U
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
0 E' h& ?/ |. V3 z* v" Nneighbor-total& V% m! U! O. Z, l* I6 t
;;
记录该turtle的邻居节点的数目# M+ I5 {% q3 ]1 Z" f
trade-time
( H& t, ~" i' k, [% @+ T5 H* ~5 x;;
当前发生交易的turtle的交易时间5 p- i* i% f0 M# s: T
appraise-give
- b2 j" e( v1 [) T;;
当前发生交易时给出的评价8 C  B) w5 ]4 z; ~: q
appraise-receive2 w0 s" A+ J$ o. N2 `
;;
当前发生交易时收到的评价
. m- j5 o$ w4 C- `appraise-time& I4 U. s. t. f& V5 Z2 `0 W
;;
当前发生交易时的评价时间
! e( Q, ]" Z4 Y( L6 Jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ y! J; m, ~5 |0 n$ T/ a
trade-times-total
" K- ?# s$ X2 j;;
与当前turtle的交易总次数! ]5 `7 Y! v! F( }: {. P( m
trade-money-total
7 G9 F. d0 P. K6 v& @;;
与当前turtle的交易总金额) f# v/ Y% J  n2 g$ r
local-reputation
7 Y$ J$ y2 k6 F8 K+ \  }global-reputation! ~; Y' X4 S" O) P
credibility3 F' i. @) G* w/ z5 f! Q
;;
评价可信度,每次交易后都需要更新
) a" E2 T; A$ P5 c0 h. hcredibility-all
; n9 {( [0 h" C+ ^: w% 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
. P) J) }5 @! O5 t3 q# l& }6 M7 [2 s+ v7 t% o
;;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
8 l% B4 u& G0 e2 m/ `2 vcredibility-one
4 x, c" _6 k" e6 T6 ?7 c- `;;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
1 g- z" N* ?3 `' e' g9 h0 N: Wglobal-proportion4 h: B& h  {! d. Z1 U- G2 M5 k  y4 i9 @
customer: ~% o( G% g* }' u3 t
customer-no1 C2 Y0 H6 l  Q1 h
trust-ok
* j- B: \  T$ z6 ]8 z0 Utrade-record-one-len;;trade-record-one的长度6 ~6 m7 y, z" N7 N
]; G, p$ n$ i+ J

, I/ ?9 r# [2 ?: c: A;;setup procedure
0 e2 r! l: J9 i. m( G: D
! x. ~0 \2 S" S+ Mto setup5 [, _; m) [9 G" X4 v- g
' i5 d' e0 n8 e" }
ca

, b, k$ d/ s( G  B+ `, r# o% N6 M
& J0 O' C' i! |9 Y. B0 |5 a0 e/ Jinitialize-settings
) ], n; F8 N. U7 Q4 s' R

# @8 t5 u9 `! n6 tcrt people [setup-turtles]
# B' n; i9 ~' l% T+ A

8 [# Z5 w* r3 d; P9 G& Mreset-timer
+ |& p6 ]4 \2 R2 q+ ?

3 g. c$ }: [$ }$ Cpoll-class

/ Z' g& O; y+ Z$ W: f: R- u1 T9 c. o
setup-plots
( B8 J5 m1 A$ c+ t8 M8 p

( ]# @( i  v/ vdo-plots
* I( F& Z, ^7 k+ y; v
end
( ^- w# w( G/ _: `5 \+ {5 F" C" z- X; O: T! j; l6 l
to initialize-settings
( J% L) _2 U+ E( u% H& d
6 A/ ^; O  U1 ?3 J7 xset global-reputation-list []
. h* P( T- b+ Q! Q: X) |9 i6 _
# n: V8 B& w4 b1 j2 H
set credibility-list n-values people [0.5]

* j3 B+ o# k6 U) Y0 u
; z8 ^9 A5 D( @0 N& h* e# Qset honest-service 0
2 o) B: ]6 ]; e0 T4 G! ^6 c

' I$ W& Q% B0 m! J- P- \- Aset unhonest-service 0

! f7 d' z( \9 P' Q. a( A
' e& l; n$ W9 O) Fset oscillation 0

- j) u& Y4 \. ?, W) G7 S6 e* A4 m6 p: ~  B/ f
set rand-dynamic 0

5 f4 z0 d' ^" N9 \0 C  W' Uend- }$ i' Z  I" U
5 z& z  _8 Y0 T$ J9 j6 z1 ]
to setup-turtles 5 o6 z$ ]! o0 ?9 k) Z
set shape "person"* L0 F% [& p9 ]; P$ q
setxy random-xcor random-ycor
$ {! R" K  l! g5 Yset trade-record-one []
& Z- n: D' Z- S% M& ~

1 _2 i/ W7 q, w* t$ Lset trade-record-all n-values people [(list (? + 1) 0 0)]
8 O& E1 z. q( a' [% j! e
2 ~9 z8 d2 S- m  d/ d  |
set trade-record-current []7 L2 z' V" n3 X( e
set credibility-receive []
' E1 i/ v2 g  ?0 Y* u1 dset local-reputation 0.5
+ |7 a4 t9 j+ M6 u. F8 q2 [set neighbor-total 0
/ c' ~' d# x7 v# M" {8 l5 gset trade-times-total 03 f( P3 r9 u  ~" d$ c. X
set trade-money-total 02 Z( }/ P' h! ]- X
set customer nobody& I. ~6 H3 l6 A6 ]5 k& i+ ?9 t
set credibility-all n-values people [creat-credibility]$ |% L$ s2 p  F) v( u- D! b
set credibility n-values people [-1]9 {3 i9 y. [- ~4 m& W6 @6 n
get-color' N7 o4 n$ c8 x8 x8 x8 S! F

! i8 T4 T3 E% Uend( x) B) X" X( W2 E; Y# D5 b$ x
( y5 R' A$ ?# w0 e9 b* T
to-report creat-credibility2 b1 Q# ]& b, w0 c: \! r2 `+ l
report n-values people [0.5]
) c% \% p5 e" c' C9 `/ e. }end
" |  E+ s2 \. `. M7 z2 B+ `( P4 p8 l# B5 V& x; x
to setup-plots
" H/ c1 A6 y( q' N$ }% q$ U5 ^* D' W+ \
set xmax 30

2 O, {4 h) A: g# |
& ^3 ~8 j' m& M0 \% Kset ymax 1.0
8 x  O+ E2 z( z& N% w; V

  _0 }  B6 ]+ P1 d1 J+ ^0 n6 U, [, Qclear-all-plots

( }5 c1 F8 D! g6 H5 v. @* Q* z( b
setup-plot1

- M. n3 z' v9 Q! a% Y. B& t  u) d' \; Y' Z! X% Z# @
setup-plot2
) T! q. [" r1 _! O  p4 o3 W/ ]

, d, P- G5 h# G3 B, ^setup-plot3

  K1 x2 |$ [; p) ?5 W+ Gend4 _0 c/ q9 C9 G. c/ q* L

9 i+ N  i+ x3 N0 S# _6 A;;run time procedures/ }* f  f- Z3 E/ r

. Y. {9 \: y1 |& }8 Q" Q) Xto go
& K  J, `5 @' l, t, j1 b/ _2 A) `
ask turtles [do-business]
. j  O/ o  L0 \% g0 r
end
3 U2 ?0 w6 P& @; n6 X, n9 U0 `( y' v0 D4 ?1 x+ c' f
to do-business
8 y  `8 R( e2 j6 O, F
: H7 e9 N; Y/ }; j
' H0 E- d/ \4 R! X, H
rt random 360
. \& Z# V  t: h
8 F, t; S, I( W; j8 U6 n* n) b
fd 1
  s; z# r+ U6 m4 q5 R& @! H; U6 U

7 V/ W1 F. L  Rifelse(other turtles-here != nobody)[

, g( T( x! f  x4 h5 x/ W1 o3 P% G8 A" W( I, [0 {! ?1 J4 n
set customer one-of other turtles-here

" O: t" g1 j' U; {: i$ r" x( H  G) u' v* e" d" y2 z
;; set [customer] of customer myself
  {& x% h, l. [( T! e5 ?* r
5 b  i! o3 M6 [  ~7 U- g& X
set [trade-record-one] of self item (([who] of customer) - 1)
4 I$ f2 w( w- n* O& e7 u  |[trade-record-all]of self
* q# K$ [3 c' w- ]& W- F2 n1 }( P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 E9 ?! J2 l# E- d, t& O+ ]# c
5 _' z+ S2 H; N6 X" H9 Q- r  C: c1 L2 U
set [trade-record-one] of customer item (([who] of self) - 1)+ V* z0 g  A% t( N9 q% a
[trade-record-all]of customer

' t8 k* i. i1 R- u$ b; N7 k- P; k5 B
set [trade-record-one-len] of self length [trade-record-one] of self
$ {! Q% e% a2 |9 t! q3 j

* N5 @) H: s1 `* {- Zset trade-record-current( list (timer) (random money-upper-limit))

3 F4 l* k0 ]0 T: w& F) A+ w9 b  F7 L
ask self [do-trust]
3 f  j0 @1 r0 ^* M- e( s;;
先求ij的信任度
, D& L, q' m" D. m' d
- h  I4 @% \0 G1 O5 G/ ]' lif ([trust-ok] of self)9 W# A2 D8 b1 z# [! T: F
;;
根据ij的信任度来决定是否与j进行交易[
0 q" M8 I, S( h; Z2 M/ j7 a7 Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" \5 a& N% o, o
7 O& d6 N4 y: M; T& K[

5 l5 w8 F7 r/ U- d. q
( n9 s7 e/ n: g" E: u6 edo-trade

  l" J( V# \! G3 G. U0 a& |5 U0 A5 @. t8 m9 _
update-credibility-ijl

  i! v9 ~* s, Z  p: |. E
# j3 [  s! m1 V0 ?8 M6 ^% [update-credibility-list  d8 C6 b* }& p
1 A  c7 Q" o: U

5 g4 e* N6 `* L& |update-global-reputation-list
8 k0 u  H4 P; x) `/ H% S
5 k1 ~. N" e; Y, r( y8 ?. ^5 C
poll-class

1 F" i  m/ C1 S. v' d& t4 D' O& U
get-color

" [( N9 _& m5 A: v) Z
% c& D9 S9 j; l- f" O# P]]
$ g! A$ X& W" ~1 [7 D8 e4 s1 \- {8 p& @+ d' l3 A
;;
如果所得的信任度满足条件,则进行交易! E- j7 c+ K5 W7 {, m

) A' a, F. H% q9 V! w$ Z' @4 z[

" {: h; Z3 K2 |" k1 H: b5 }5 j/ @- n4 s0 |' N1 B
rt random 360
7 U3 Y) x4 K; a
+ L2 c  b1 O- ]  F
fd 1
& \5 p0 \0 C% z8 T3 S; [

  {+ G* B+ B* w) j]
: Q$ g+ v7 j5 ]4 d8 v; |. p
+ F+ V2 e3 @0 `* t  q
end
2 R8 h: B0 w/ r- K9 H, m

( I( I% h- f, L  fto do-trust $ v: I4 Q5 s& z5 W3 c+ J
set trust-ok False" |! Y$ |! b1 V9 b" L$ O
* x# R4 C3 ?4 {7 k1 [6 y

4 h+ m  k5 \1 s& }let max-trade-times 0
3 d' O' D$ x8 oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ C2 ?- j2 G3 [2 C, y6 o7 N( n2 Dlet max-trade-money 0
' }' X5 H6 Q: m& ~8 T  R4 u" @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 d7 t4 P# h* V" {/ h, i9 \let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 ^% q& w0 m* h# D' a6 e

& x7 u# Q6 g) `# `# Y1 L: [
) K  H7 w8 q5 E6 D
get-global-proportion
; ]/ ^: ~3 E; slet trust-value
& I$ \% O0 ~8 A$ Y* \: F( D. tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

7 _6 a1 a7 K0 D. w) {if(trust-value > trade-trust-value); N) F. I' D) L7 r
[set trust-ok true]% Y& m( x' r/ ?$ |/ i
end
; M4 s/ T1 g6 ~  w9 {8 u1 b' S. [1 {' D7 M5 g, M! _1 j$ H) m
to get-global-proportion% E2 R4 R7 R6 S8 Q& w4 N* X
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 K3 B9 k; G: T6 s  A9 V6 K) h
[set global-proportion 0]+ g, g5 y1 j. l% H
[let i 0( ?' r) R2 _+ n& W' V
let sum-money 07 e1 X% x: ^9 p8 r* S  @; J3 N
while[ i < people]
, ~. G1 ?" L$ H) x( \) P9 Y) [  e[" }! i/ D* V1 l: n7 y' z
if( length (item i/ H/ g6 i; _1 b$ ]+ \3 D% @" ~
[trade-record-all] of customer) > 3 )
# |9 @8 N1 |0 O. U8 `, `, H" E
[
6 O# `. X- ]0 \& b$ @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 @' y8 I8 p* h0 J2 g
]- `4 V) m9 Q* @7 v
]5 ~8 t" w) K  h/ I. X; ?$ A6 r
let j 0% i6 k7 w  s* W* ^1 e" @$ R
let note 0
9 L5 v( j5 h! n$ G  y# B4 Awhile[ j < people]
2 `  L2 @2 M7 z/ t4 w( D) C1 K[
* c/ l* b* c% e& F: eif( length (item i" y4 K2 j) d4 W* n# p" V: J; H! l
[trade-record-all] of customer) > 3 )

" W# ^; h+ j3 B' s+ u9 p[6 ~7 Z! g. E$ K/ z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% ]* v  n- }9 f2 g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 v; R5 H) O0 g1 A! I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], X! Y" ~* m- `9 {9 I/ `! c- V1 e
]( d, _  _  g* }. Y, @3 M
]) J/ U. I. F. P
set global-proportion note* ]- h. E# o/ g& ]% p+ T
]2 t% i) k0 n3 u* ?9 U  P
end
) \/ L# C$ `+ D3 D
8 n1 z4 i1 L' I( J5 w$ rto do-trade
- ?' f6 t) k+ l1 p6 J( v;;
这个过程实际上是给双方作出评价的过程
* `/ S1 O# W3 W3 L8 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 M  m% Z$ y% c( P9 k! f3 M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 J8 u: d1 P/ f, \" Oset trade-record-current lput(timer) trade-record-current6 m1 J( I* Z+ t1 p
;;
评价时间
0 P* t7 e, p4 N) H. t' dask myself [
9 B+ d) J% ?# a  D3 Zupdate-local-reputation
/ e$ h$ l1 G5 R. z: ~" iset trade-record-current lput([local-reputation] of myself) trade-record-current* K3 \3 K" q; b5 L6 r' K
]
  ^) H; G; Z1 zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* T- p& }1 d( R. T5 V# {& f2 q. Z; A
;;
将此次交易的记录加入到trade-record-one3 A  z) Z, F; c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# y' h, J: U/ J- a' e$ s1 Blet note (item 2 trade-record-current )
1 u% s  u) u4 N# G, I& pset trade-record-current% E  u+ i$ l+ s0 \
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 X! f5 q! T  q1 R" x4 I- P. _; J) l
set trade-record-current" R" ^& ~$ P3 t! K8 `6 I! q
(replace-item 3 trade-record-current note)! {4 s* K9 R- X* P9 `' V0 p' `

, |! L. r' e. [4 Z0 W8 i

1 O) ~8 N2 n; ~+ ^ask customer [
7 N' g- o0 H2 O; iupdate-local-reputation
2 T0 P5 p" X  z0 k) Z9 w; wset trade-record-current
* v: F4 w, K3 b/ s5 p; T; ~* i1 E0 `5 O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% @  o7 ^% U# V3 ?3 ^
]
8 D$ N9 ^2 `4 z; F' W+ I, j" w7 a  R$ _* k
4 G% e8 f! U* r7 k5 X* Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, @3 E2 r) w, s3 s7 ?3 ~" Y

( m+ I* K9 o1 aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 j& _. s2 W# H
;;
将此次交易的记录加入到customertrade-record-all6 w8 h& G7 H; `8 R; L( [
end
6 O  ~$ b  b' g2 q# L0 O' C7 Z1 w4 Y9 c# u$ h
to update-local-reputation
* }4 v8 u$ ~3 bset [trade-record-one-len] of myself length [trade-record-one] of myself
8 [) ]+ L; b" d3 n! l' V3 {8 |5 `2 x% g2 w# A. C1 G

/ X1 [- y. _( J) q: u! G( w8 [;;if [trade-record-one-len] of myself > 3
, P' i. R4 Y9 {0 n: e
update-neighbor-total: y6 p3 K) }# x+ ~
;;
更新邻居节点的数目,在此进行
8 u5 x+ }2 b8 L- a  ~2 u" a( n1 Olet i 3
% A3 h8 _. r9 r2 blet sum-time 0
  X* ?5 [8 Z9 U. U3 z$ V6 Qwhile[i < [trade-record-one-len] of myself]$ K! Y, v6 H. U5 }$ D" E
[
& ]! H- z0 Z& T! Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% z1 _- u; a# [  l: r
set i& U" E4 |' `" g( C5 T
( i + 1)

5 R8 K& p1 Q! \' Z]
1 Y" ^6 M) z5 ]; }* T# Hlet j 3
+ F6 Z1 A7 O, flet sum-money 0* ?! r, k: I8 X8 D
while[j < [trade-record-one-len] of myself]
% u( N  V. _) v- r" |; Y% `4 z/ M7 |. N[) h. u( _, [  c4 O
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)% E2 e$ U2 X% H% b# O9 k
set j
7 ?) R2 y! Y+ U4 e) o6 u$ ]0 x0 a; z( j + 1)

/ h1 f0 U: B: J6 p]+ u* j; k) j( _, i9 c+ _( ?! w# l
let k 3
/ G/ s4 _* L, _4 j* Y+ q' klet power 0
- U/ q/ T+ X" q+ m# L- S4 O9 Jlet local 0# H6 e% S, G" o9 t( o/ g
while [k <[trade-record-one-len] of myself]& K  y8 n" v' ~3 d
[, C- R+ E, y( H6 m1 a7 E0 Q7 F
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) 5 b! ^* h' T( \/ t5 D
set k (k + 1)2 y- ?2 E1 ^1 @5 B6 H  Z
]5 g/ l3 U8 O* i* a) d
set [local-reputation] of myself (local)7 }* Z2 y9 {, m' ^% }, M# u
end3 k. f' U# E  q. d  r
  ]8 ~1 o5 }" _) k! a# S# ^$ I
to update-neighbor-total
2 n7 j* `+ }+ x. U
4 g% }# j( u6 Q7 @8 v8 k2 U1 y- Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ U" w8 {( Y5 a9 O$ Q

, g# }  N1 {# e7 c0 i+ g1 q0 O* m

$ N0 C% {9 H5 N4 _( r3 j' D/ Kend
% D/ C9 S2 R( l1 K3 b  t, s& A8 s5 @
to update-credibility-ijl ( M) M; ^- U) ?, d7 r
; P6 c2 A; V; l  E
;;
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。  T/ \! `4 k" F2 r! V% I) \
let l 0* m- G) ^, z; ^
while[ l < people ]( J# b) C5 F; Q" h( 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3 z. H  n! }: @& {2 G+ T; {
[- b1 c7 N. x/ c$ Z7 q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& M1 o( c# ]# V: V- \' Fif (trade-record-one-j-l-len > 3)! ]9 j' ?( 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
4 \& b: O& G- _( c0 w0 y  Zlet i 3) c7 O4 z$ e! [- r0 D& O
let sum-time 0
/ x0 }. d7 S0 P9 Y. L; B' j  swhile[i < trade-record-one-len]! M7 J7 V2 d& g; Q' s
[
* K6 o& u, `0 ?) d- pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& @& L, v3 {# H8 K2 Hset i
/ W9 m/ `2 g; s( i + 1)

; D2 \$ X: e( z  N5 ^]6 @' m" N1 s" o* z0 t; T6 L
let credibility-i-j-l 0
; v) A# u6 z9 W) S;;i
评价(jjl的评价)
0 b2 i7 z0 @/ hlet j 3
- ?0 f% _/ U; Ulet k 4
6 q' @6 h. Q& \; c8 k! B- Gwhile[j < trade-record-one-len]1 b2 p; }2 f  x. V  ~9 H) W; h
[; S# ?* K4 X9 ~- T6 W9 ?  n4 r$ j
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 H/ M- U9 J% t6 C+ b
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)( n$ P) C' D! e6 s3 T  O
set j
) C, Q  [1 C! v; i9 H9 n9 s( j + 1)

" i. f; U1 @# l7 r]
4 Z$ T6 `0 e: y) C$ G1 F4 [& j# I  }: X% kset [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 ))' w% K4 Y9 b: w' n8 Y
: I0 m% U( J7 O% V
7 H8 n8 f3 T+ A2 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% I8 X! S: g9 l+ o/ [;;
及时更新il的评价质量的评价8 X# X! o; F6 h) m9 Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: |1 X* T! W2 `8 \/ _* R
set l (l + 1)
3 J# [& D$ [. b]
/ f1 M9 W. x9 o; E5 ]6 E7 O6 O6 ~end
- J, s4 Y* S. Y: u9 Y  J+ w1 x' }. A/ K; D, F. J! \2 S
to update-credibility-list8 S+ f( T6 q  e* ?" z6 H+ }
let i 0
6 n* z4 q5 S* j" P8 V: k( x. Dwhile[i < people]; q, c+ o% a4 E' h/ f
[2 s3 P1 R9 }6 w, {; Q3 y7 u
let j 0/ {) N! }1 X5 P9 b2 @& a- F
let note 0; U! P4 x8 i8 Q/ E$ I
let k 0
% ?7 b! _  Y3 w# Z;;
计作出过评价的邻居节点的数目. c6 p! S* m7 @, z" f1 o. l' q
while[j < people]- g+ a" S. f: W
[6 [  e3 ~- ~3 k9 k  U7 `
if (item j( [credibility] of turtle (i + 1)) != -1)8 n9 p6 f' m3 \
;;
判断是否给本turtle的评价质量做出过评价的节点. l, c2 M$ R6 ~# I7 R# K3 V0 w
[set note (note + item j ([credibility]of turtle (i + 1)))/ \% A% H. c) j- O3 c
;;*(exp (-(people - 2)))/(people - 2))]

: u0 d3 k) i1 L: @set k (k + 1)4 e/ A+ U, e. A  S4 N; H8 h) t
]: B4 I, ?. C! n- w2 H& M2 X* ?4 G
set j (j + 1)0 A! e0 ~0 w8 V& }
]
) J, s4 Z( D. \; h2 Wset note (note *(exp (- (1 / k)))/ k)) C( S  L5 b+ O
set credibility-list (replace-item i credibility-list note)
4 t3 p; Q. v6 D' M7 T7 Gset i (i + 1)
( @/ C! p" U$ f# {]  h4 K' F5 ^& ^6 q7 i0 Y0 ~1 t
end
9 f) P6 t3 Q- r5 ?8 H* |% j  e8 e+ w; \9 y9 \& e0 h
to update-global-reputation-list" `+ N8 z. N4 i8 C7 }# K: J$ H9 A
let j 0
  B" Q1 M! S* s) T- |+ Dwhile[j < people]
! K! \* w: U% h0 N; }0 |' O[: G. `2 n! c9 U; v) l2 z- C
let new 0
) U: n; a2 y  p4 g;;
暂存新的一个全局声誉
# F' A: ]6 w* I8 X- K( B2 I. G8 E/ |+ qlet i 03 L% Y- o% Y" O6 P2 f$ l% ~4 ~% Q
let sum-money 0( E6 r0 _9 u9 U
let credibility-money 0
5 K/ q8 P( g& ?1 y) Z8 nwhile [i < people]# e. ?, ?; F2 P- g! h- W3 i7 p
[' Q0 h2 @0 [) x0 y( n1 T, W: H
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 a+ Z5 z  c9 j$ R0 K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: ~+ T* ^9 o$ g; n1 F! Wset i (i + 1)' v8 _" h# r+ o# N+ H
]" o5 l6 O8 f' V  e: C2 z
let k 06 {* m6 Q4 j: @0 w2 [" T: z6 E) ~
let new1 0
8 G9 W6 a& v6 T$ t0 Q# n" q, u, Iwhile [k < people]" M& T2 |' l2 f+ E; _5 G; a5 U1 y
[/ r) E1 p% Z8 N7 y' l; d
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)& G3 J( ^& d+ O. J, Y
set k (k + 1)+ L2 D& s7 V8 W/ D* }9 e3 w
]
+ R$ S# ^! ]: o5 D5 d) u3 A* f5 a- nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' ?( F6 Z% D  T- x& ]/ X, R; R: d
set global-reputation-list (replace-item j global-reputation-list new)" o2 {) l! C' J. R$ _0 t. H
set j (j + 1)
! w1 E8 A! j/ m4 []  v$ b+ B+ c" i6 n* _/ N
end2 a/ Y( D& {. B. z- ^7 @* j8 i: m
& A3 W% ]' U, ^* {) g( j0 w3 B
5 f. f: l! U3 Q! v( j
$ I/ L4 Q+ v5 w) h3 ?# O7 ^
to get-color
$ N: S0 ?4 u& d
+ f0 [  ?9 B3 ?) rset color blue

/ E3 z6 }8 @& E. yend' j  [" p% r* |- }/ J7 z2 j

8 E" y! H* F( Q3 V  `, C2 fto poll-class( L( a1 C/ L+ @) p0 w5 S, @+ R
end
, g3 M1 ~7 {5 F( B9 S4 T0 @
1 C6 m3 N+ {1 Oto setup-plot1" Q" f- R9 o; |

# D( o3 D9 r0 D# b  aset-current-plot "Trends-of-Local-reputation"
5 A. S4 K* l) o; L8 Z* e

! F" [& u) Z! D7 F4 L2 Bset-plot-x-range 0 xmax

5 t, c  ~" w: k- G( O: Y" k% z  R9 k5 Z$ R7 \
set-plot-y-range 0.0 ymax
0 {1 [2 v# |2 l5 a9 v
end) F9 q3 }5 p3 _- J- z8 {# W
* v% O  L8 s, E& j
to setup-plot28 s  Q2 n5 f9 m% t

( f8 `# |3 b" ~0 C! b. Pset-current-plot "Trends-of-global-reputation"
, j* |- m, E. T5 g/ {
; q5 e; P! W% k  R5 _
set-plot-x-range 0 xmax

0 d0 V  m8 ^- {6 F, N0 ]/ g7 g1 i# J: {* \
set-plot-y-range 0.0 ymax
/ a4 r! ^* A# S# b
end5 I- b, G  {. _% ~

4 j- m  z+ g1 A1 }; Ato setup-plot3) b: r6 F- O5 J. H0 s% H( B3 ^
) O0 _% Q9 n( c( M5 g
set-current-plot "Trends-of-credibility"

/ h, [/ l( G4 [9 I$ O$ q( z6 l; P3 K$ C4 F
set-plot-x-range 0 xmax
8 K: @3 k) R/ w$ Y6 S" j! N4 X
7 M* |% P) V- l% j& w& q4 s1 X
set-plot-y-range 0.0 ymax
* _% E! O  C/ V8 u1 ]1 F* u
end4 k$ T+ J" a( {& r% h* G& q
1 D) b( p8 K* p6 b+ R# L
to do-plots4 S" e. z& S. g2 Z8 ]8 J  ^
set-current-plot "Trends-of-Local-reputation"
" E7 t  k( R4 r: Q# nset-current-plot-pen "Honest service"" W9 q$ u6 U1 J; G
end8 o6 [* y( d% }, v6 |1 F

0 E- o0 I4 @* u& t* a6 N8 C[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
4 \/ K9 F7 u: F6 O1 V
: X; ]4 [2 l: {9 S% T2 v: _' o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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