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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:4 n/ h7 w! `  p
to do-business + O* X, r9 u3 k
rt random 3609 {4 b7 |) T  j
fd 18 v, c. k- n" p2 T5 h. c
ifelse(other turtles-here != nobody)[
/ `! |/ x0 a6 {0 |   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.
4 M- j7 a1 z; v+ s+ u6 j/ z% l1 I; R   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) h* L" ]# g' ~# C1 t4 a; p   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  \5 w; l, {8 Z5 E9 K4 m; y5 ^   set [trade-record-one-len] of self length [trade-record-one] of self/ G9 ~5 C2 `2 b5 p0 G$ i
   set trade-record-current( list (timer) (random money-upper-limit))
" z- m, Z2 h  J( C1 F: n$ k* ^5 E
9 t7 O' `0 l% `问题的提示如下:4 S! e4 B6 u1 u) p
. ~% @5 V9 A& s, v, ]1 q
error while turtle 50 running OF in procedure DO-BUSINESS& n4 a0 z( X# F: ?9 k/ G$ {
  called by procedure GO
' U- w* p/ S8 y6 q& i0 i, X/ Y3 [3 QOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 A; q5 K$ s4 T# \
(halted running of go)( @9 I0 ]- R: g8 T! V" A! C8 }

- ~! C! e% Y  l% ~" m/ l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~~# c0 D1 M$ L( d  |
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 U( Z6 x! h9 g6 d; R9 G
globals[! G( V: H: ~- p' \/ d; F' r( K
xmax. V2 [6 |8 o; z6 E1 {" p3 a6 a* Q
ymax5 l7 F' Z; {4 M
global-reputation-list
" [4 ?+ Q: `/ a2 `
- j6 o7 E1 S5 }% o& F& G" ^" g. @/ w;;
每一个turtle的全局声誉都存在此LIST0 d) c2 u  _' l: o2 C4 a1 [6 z$ K
credibility-list
4 F' d* Q4 N+ \0 a;;
每一个turtle的评价可信度: _/ U: A, S5 N  a# M' u# l
honest-service
1 k* d0 N4 a6 L) T2 R% i3 |unhonest-service; H( s6 {" }2 ~" r0 E4 L- q0 q
oscillation1 n. x2 m% e8 J$ I9 F
rand-dynamic2 L. D0 N, |7 g6 K: ^% W0 Z2 p
]
0 |: Q2 B0 F2 p8 o7 b; b# g# d5 Z  O8 w/ @
turtles-own[
5 Q1 C+ ]% Z( a/ d; Mtrade-record-all
% ~) m9 u- A% K' S  l1 f0 E! k;;a list of lists,
trade-record-one组成1 I9 [8 u, b8 k  e  ]( G
trade-record-one  _. P. j% \( d; o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! x% D2 d" h! T9 s5 n6 g

* _7 }6 _0 B/ z8 o0 z+ 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]]. g$ F' Z: @- H( n1 H; C
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]
" {& b' v9 P1 [- v+ ycredibility-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" |* R& n3 `( ~8 L9 i
neighbor-total
+ C9 d' D* n% z( ];;
记录该turtle的邻居节点的数目
+ o+ w/ Q, ^8 b/ [4 J9 c# Utrade-time+ f5 s) Q  g6 `* f& x
;;
当前发生交易的turtle的交易时间; T3 {9 _- W5 j, D
appraise-give
9 g' U* y. r; j! P! Q;;
当前发生交易时给出的评价
1 h: J( |1 ~( j7 k+ D7 n6 x9 y. Pappraise-receive
9 r2 s3 b5 G6 \& P+ r/ w: ~% b. \;;
当前发生交易时收到的评价
4 B: h4 Z- t/ ]+ H$ @appraise-time2 _( J& J  }3 L6 {& j! Q: V5 F) L4 x+ d
;;
当前发生交易时的评价时间
6 @, X4 }$ W" V/ tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* x6 ?4 _; r5 j* J5 }trade-times-total- z9 ^8 n' B) j( `  X8 R
;;
与当前turtle的交易总次数. D! s4 K) l) d9 i/ P
trade-money-total
/ t1 e% p3 i+ Q7 y& };;
与当前turtle的交易总金额
' L+ ~: ~4 B  J+ P9 ^% ^local-reputation. u, F/ h8 o- g( ^
global-reputation
8 R. ^. r3 J! T. |  Jcredibility0 y, x. u6 Q& q
;;
评价可信度,每次交易后都需要更新9 U5 h& h" _0 M& ?. y
credibility-all
" s# q3 x0 ^; \3 I- h( r+ P& F;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
; V1 _: y& J" l# }' E, t! Z3 D4 H& n9 y5 z& c  o0 T
;;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
7 Q/ A9 Y! l( V; O3 c' I, mcredibility-one
4 |/ d! `* c2 T; L, a;;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
3 J1 r  I0 R  Q8 @global-proportion# `3 y" D; q. C% _. k- s# ]/ w
customer5 d+ a: V8 k' H% o: ]$ j
customer-no7 V3 n3 p% ?: M/ W' [" w
trust-ok
3 I8 F2 H& g) U0 m2 Xtrade-record-one-len;;trade-record-one的长度: G0 b0 Q# T7 t9 m, r$ i/ C
]
9 M/ ]( o# b  X" P2 e3 l! @6 h( q1 z! H5 ]8 A& c
;;setup procedure3 @4 ?8 S+ x  [, E% Q$ y  h' l' {

+ e! a2 B& ^, N+ ?- _' x; m  Nto setup: O+ d8 C# R7 S. y

; U. b6 i; v- ]. S" nca
2 U, d3 Q- W: k! }7 i

+ W) p* w/ |! D% J4 q! finitialize-settings
5 U# C" _' A* Z* H( O* }% L
' T  ~0 e( _( Q
crt people [setup-turtles]

; G( P. g0 S4 z/ n* y/ r
* J: S' B) ^$ ?& p" ]5 H8 C. jreset-timer

3 B0 B3 K! C& m  q9 e$ r& t, A' r. L+ z1 K* @6 a9 O2 E4 E' i
poll-class
6 j2 N& ]" E% W5 C( _- @

6 D, B! m+ c+ n3 i9 B- N" e) Usetup-plots

% Q' n, l7 E2 a1 u& x. q1 H# P1 o  [/ ~( S6 R2 R
do-plots
/ [0 o2 o8 |8 [/ s: R
end0 A; ^+ x- W9 K9 B- }
  }) Z' i( V, i$ h: q
to initialize-settings
: F5 A% [; ?5 T- D9 k' J/ c1 S+ g1 F' a4 n* y+ n7 x, h. Y* z$ e
set global-reputation-list []

: G* M1 Z7 \/ a! w/ ^* Q7 y- R) e5 p8 @% a9 l+ ]/ Y- w
set credibility-list n-values people [0.5]
; R$ o. q; g8 u7 z1 A$ y- c
! x2 q/ O( P% X  I5 w0 f1 y! V
set honest-service 0

! J( s# c+ F2 S
$ }. G( p; u% {. Tset unhonest-service 0
/ S+ `: C( r1 V
* [* M5 z% u; E' H/ @/ a
set oscillation 0
$ E1 k$ L- v! Q$ @9 _5 h! R

: f8 H' R$ [4 f  mset rand-dynamic 0
: o: e# O; D* H) g
end
, v2 C! P  ?3 b1 G  {) n. m/ U% q& ?1 ^: f( n0 {: s
to setup-turtles ; `* @% T7 o/ V- q/ Z
set shape "person"' R! g: w3 u: e* ~8 M7 }
setxy random-xcor random-ycor
" D8 g3 h/ j: R( H7 q$ Bset trade-record-one []
6 G! A( t& l2 q

1 s* b7 X! z/ l& E! Hset trade-record-all n-values people [(list (? + 1) 0 0)]
, ^2 M: `' ^6 r# d% I) n

3 H+ X7 \+ y9 Tset trade-record-current []
0 E( g# I: N. N8 U/ iset credibility-receive []
8 b5 B) l; \3 G- @set local-reputation 0.5
$ P, O; @& H8 F1 Q, l# `set neighbor-total 0( {3 e1 S# @9 l" ?6 r0 {
set trade-times-total 0+ Q& M3 _+ r% Q- b9 ^
set trade-money-total 0" A( O7 G7 l3 w" {' M5 g0 X7 {
set customer nobody
% j$ C$ r8 P- K* cset credibility-all n-values people [creat-credibility]
( J9 @# P: \3 ]7 X) W- S1 ~set credibility n-values people [-1]$ z$ o- V( W0 H2 Y3 d& R
get-color
; S3 g4 F- k9 ]9 S7 r3 w

$ N7 G4 q5 u: D  H# R8 {4 hend- W6 X* K. Q6 A- F  M
! O$ u, x; M: h- [* T5 A+ _
to-report creat-credibility" m3 f- @2 g& j4 v
report n-values people [0.5]
* C! W: U/ e. R" `6 H0 w8 Uend
% M  m2 G  K. U. b2 _1 L# h1 A! Q5 P. v
to setup-plots
, U; ?9 L" g# Q8 d$ \+ ^; [
5 O0 o1 o7 F+ X) Rset xmax 30
7 A, `) S4 r# M* E+ Y0 ]0 G
& j, p3 i; k0 M$ }- B  i7 Y
set ymax 1.0

) Z6 K, o4 C$ R1 P9 _# M  W
# C! p) K6 ?6 X  N/ }2 E9 J+ kclear-all-plots

! n" i2 V6 A% N7 w* C, r; e8 [( L! E/ s; R8 |- s7 x. S) s: H
setup-plot1
3 Q  u2 o2 Y+ P5 i3 I- u* {# e7 i
" r. c5 i4 C. S- n
setup-plot2

: r! |$ l2 z+ U2 z) D7 c
3 M+ d( U6 b/ f: `2 jsetup-plot3
8 s5 V+ i  h( z
end
- K& o/ F& t" w* q! a; M6 z7 A+ G1 Y$ V2 S
;;run time procedures
3 J5 @( Z+ _6 K; W, U) L: q+ s. ~* Z+ L7 C, t4 @' C5 x- c
to go
9 h! c" E5 A/ G1 }( _
8 t9 x* M: D4 M9 H/ d2 O( Qask turtles [do-business]

9 N2 R; J( x! R/ A3 i, J# Zend
. v+ `' g9 w  Q( G) q8 s2 n! N! c; H0 f( u& v5 a5 m# a8 K, S
to do-business
' }. t9 J& W+ n% E* I

! J2 D) i2 E/ P1 @9 b- X8 F2 N% Q, j& w7 Y1 ^8 Z
rt random 360
5 n5 }/ o% U& o# r5 w! e8 A

9 M# Z; H0 p% F9 e, Kfd 1
, A" p  b  h" v9 G; j; D' z9 w

" k6 I7 L: f( i( R0 X/ Z" Gifelse(other turtles-here != nobody)[
+ e- L( K2 i, \+ ?1 i

* D: T- M6 Y  B, U6 ]9 k, p" aset customer one-of other turtles-here

' V& A# L! s" j' E$ i
- {* f9 l" a! K( X0 Q;; set [customer] of customer myself

7 W$ A8 p& e2 Z- l" `- r4 C+ l  J0 ]- u' e5 A: T+ a
set [trade-record-one] of self item (([who] of customer) - 1)
+ X6 Y7 B- `4 s' C; I[trade-record-all]of self
9 k1 o+ D2 e, N3 g2 {0 e+ w" ?;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 }9 Q4 [3 X0 s- {( R7 ]$ I/ R  W3 [# ~% b/ d$ \
set [trade-record-one] of customer item (([who] of self) - 1)
; }  S* h! z6 Q: x1 \/ e; h[trade-record-all]of customer

! u4 S; R  h0 K5 ]  s, M
6 R1 A; ^9 b, n0 y6 i7 w! I/ n, vset [trade-record-one-len] of self length [trade-record-one] of self

3 i7 w7 M; N1 t" v: o$ F% ?4 Z2 m5 C8 B+ f) Z
set trade-record-current( list (timer) (random money-upper-limit))

- M( {$ l. ?9 o5 Y" Q" z4 h- e7 \- C, J: ]' i' m7 M6 p
ask self [do-trust]/ H8 A, b, \& b6 c
;;
先求ij的信任度
! a" X8 c' h& X' o: Q. b9 ?* c1 Y7 a
" k3 x/ S/ w5 H# ~! o# A6 Aif ([trust-ok] of self)- m8 t4 N; d! y8 ^4 i# F3 k
;;
根据ij的信任度来决定是否与j进行交易[
) R5 e/ f& p+ Q+ N. M! kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 D4 e* @4 K* d! y
8 m9 A9 g% D; G( |: v: a
[

2 I& p' T* b5 w' C. D" N& u4 c0 Z$ L, E+ T( N0 [4 _  S7 k  f
do-trade
9 e. `1 _  k2 W3 o

' h$ D7 E5 `/ S3 jupdate-credibility-ijl
, V$ `, g$ j0 r) J2 v2 Z5 G
  N% B6 f! o) B6 ?/ d4 e+ M
update-credibility-list2 u3 `6 Q1 u. {" l. f7 _1 b

! b5 ?5 y+ g3 M/ o$ ?6 [
% F2 ]  @4 t; T1 Lupdate-global-reputation-list

5 _( j9 l. G9 K) z/ u5 a+ b- [" n  T) N+ Y: K/ d% x
poll-class

5 ~7 i- s6 @  w+ c# l, v5 c/ ^4 g) a% T5 C& [
get-color
# \4 f) ^! h8 D7 K8 E% }  {
( c3 r+ I. s' H7 B: h7 M# A
]]
, V/ q! A3 p/ I4 Q
' ~3 K" O% W1 X/ S% |;;
如果所得的信任度满足条件,则进行交易* N" w0 h% ~+ s, T
* y# v. Q; O5 d5 E/ e
[

2 w- X) X7 ?. l" \3 [. i; l" ?. z2 `; N- D4 L
rt random 360
+ H5 H) D$ V" P; D- ^' {2 G
+ E4 ]( u( N4 Q8 [  G
fd 1

+ W% y) g. ?4 F3 c- a- v  \( ~3 j0 U" @4 R5 G5 g
]

* u/ @# Z, J4 `: c$ x: {: E! x2 v. _6 F, R3 t, x# E, l1 V6 g/ P
end
7 F# o- r, h7 A4 g: i

7 q) n) t9 I# Y, U. X4 [to do-trust
( `* O  b: t6 W: P" T2 T, M  ^# Sset trust-ok False
# Q  ]- k# e, a3 U0 L8 `4 e, X, O# p

$ ^- O+ X- N0 g5 D1 elet max-trade-times 0
; D8 n- g5 W+ j- c8 h; Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% s# \- r- r9 s, ]9 alet max-trade-money 0" c  x/ C& I; _4 w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 J1 F& Q6 a3 N7 m4 M
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* e2 L+ e) D! X. _; D3 S' b" ~' y; U8 h3 T6 e8 h2 g
  E/ }. k8 X* v! z: q" x% g6 q( q
get-global-proportion
% r/ G* v2 r  q! ylet trust-value
+ M/ _, N& |1 c, Qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 S8 s, S; j+ k5 t0 Z/ e# k
if(trust-value > trade-trust-value)0 f1 C- B  \9 I: ^  Y6 s: F" `
[set trust-ok true]
+ B+ \" r1 b: ~) v, r1 kend* j0 ^# [; T. E1 H$ v* M
( Z+ r: G3 l5 ~# f. _1 `+ v
to get-global-proportion
$ S  v% k. r4 T& H  Q/ fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 `+ o$ ^& f1 F5 N[set global-proportion 0]
2 y6 [# T- Z  {  [[let i 0' U# `8 R, P7 ^$ Q3 o( F" }* i
let sum-money 0
$ w! u! n* W7 c( [while[ i < people]9 i( U) B# t: g, Z4 A
[% m4 A, \; X( Y
if( length (item i- J0 r3 W* [5 }
[trade-record-all] of customer) > 3 )

: l: J$ ~0 _/ m) r8 h( Q[' w3 D) n7 M- \) P+ B9 f8 f& e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ ~* j  _  J: g- D! Y+ ?5 e+ I
]. G8 R1 A' G, ~  Y, y9 v
]; c$ l2 z5 u! M5 N9 J$ e4 T9 r
let j 0  a, M  t% h( m4 i! z
let note 0
9 w8 X. r! D. f! p* dwhile[ j < people]
" u! V9 \! j$ c3 S1 F$ `0 N[: }/ ?* h2 e8 ?1 _! t7 `
if( length (item i
( e: C/ _9 s) [1 h* Y[trade-record-all] of customer) > 3 )
: g& T2 g# T4 S: d+ F0 n
[4 m2 ]$ A0 t9 C4 R# u, f
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 l3 g9 S! x% F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 u! Z$ h: f- {% U7 o! K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 f' J8 U" S/ n' ]& J+ c]7 b7 O. h8 Y: Y1 t8 d  L$ J
]- p1 s4 _( Z5 D& C6 x
set global-proportion note
2 v3 K8 x& K  a" f( e- B]$ h0 u' l* C, Q
end
9 o* P. n' Y/ w
5 x: J3 [! M2 [8 hto do-trade
2 }* S. e4 p" l! W6 d" z;;
这个过程实际上是给双方作出评价的过程
$ i6 S- j" P5 Q! ^. O/ \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 n; g' u3 u4 U! ~* c$ o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* A9 U! B' m( u; R
set trade-record-current lput(timer) trade-record-current" V5 L6 d) G& F' p9 O
;;
评价时间: U: N8 ]* v$ e2 T5 z
ask myself [4 F0 M" a( w8 @4 L# r
update-local-reputation5 Q6 R3 i) P" l% y6 X/ d
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 a( f" ^7 I) {* Z, a' ^]
0 u6 }: y# b/ Mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ _8 I9 s$ F- h: v$ D2 T
;;
将此次交易的记录加入到trade-record-one
: J" m9 P* I3 f, B3 D- b9 o3 |' F( Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 h( L1 {$ o; ~& E% S& P0 K
let note (item 2 trade-record-current )5 L" ^! H: t0 z& [7 ]# s( R- _. t% ]
set trade-record-current5 U3 s& M: O# q* b
(replace-item 2 trade-record-current (item 3 trade-record-current))

" d, N( @' t8 E! H: d$ sset trade-record-current
7 z# Q  u+ p! u* v6 r# B; r(replace-item 3 trade-record-current note)
4 T3 Z$ _4 X' L
! f% i5 o! E8 E/ b" m9 [

2 S2 {0 Y7 j) d8 `ask customer [# z, O& f5 @; Y
update-local-reputation9 e+ M6 W; }% E/ C6 S, W
set trade-record-current
) U; L% z, `) n: M% c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 Z" b2 t+ D* s5 C0 l8 O]( ~8 B% o7 ?) s# |0 F+ y
, f6 J* J- [  q& u+ e( k& V# t
) w3 T4 P2 H2 _4 q0 Z3 l0 S. @- C
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. y& C! z5 y, C+ f/ m

+ S! ?: C# s' p6 u6 A- v% Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" I3 f" e) F1 U  `;;
将此次交易的记录加入到customertrade-record-all
8 E3 c- \3 N" ?end
$ F! h3 Q0 [$ d& w- [. _
$ _6 \- l8 M$ }/ W7 K9 M. ~+ Lto update-local-reputation% i( C) r0 Y% R: \3 e: s3 l" r% Q8 z
set [trade-record-one-len] of myself length [trade-record-one] of myself
& z2 `4 k$ ~. B; b. C/ B" w( ?
- Y% S: N# ^# m
! ~: x# C& G! \;;if [trade-record-one-len] of myself > 3

: \. `" \1 a% y/ h0 w2 z( L& xupdate-neighbor-total
1 }) H9 \. x+ L. C3 x;;
更新邻居节点的数目,在此进行; t4 s3 q8 N' N! a
let i 3
( f4 r# d4 e6 e7 t5 P+ T2 Dlet sum-time 0
' g! `- ~3 S1 P6 Q8 m% Bwhile[i < [trade-record-one-len] of myself]
+ g4 ~' u4 c( i: Y6 T9 ?: m. P0 P) I6 A/ A[
$ Q- N% T# a/ N, B+ W+ U+ Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- t5 h5 t- P4 E7 m; H0 _7 o
set i
! f8 q. J  H/ H5 E0 j+ v( i + 1)
5 e- ~, S4 k5 e; r* \
]
; D8 J1 d- C6 k  i; _let j 3
. `0 ~5 P/ k2 V, blet sum-money 0
4 I% e8 l9 D$ a6 P% k# bwhile[j < [trade-record-one-len] of myself], ]% g. J0 B2 X
[
2 y* T* b$ \2 R; n" aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" P" N- A* c8 L$ d! i: I
set j
3 D: \* j0 G& R2 v2 K: }7 n" g( j + 1)

1 F" j+ |# {5 s' L5 e; t. ~]
' W1 d0 u2 K6 o% T1 clet k 3" c" [2 e: m* T6 j
let power 0
% u3 \- C! W2 E% C8 N! ulet local 0
- ^9 q: p3 V6 y! Q- _4 ewhile [k <[trade-record-one-len] of myself]
% ]1 i: H9 h1 r[
& H/ H& a4 k; ]1 e' aset 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) " t0 v7 l* j" b3 q' Q! \$ e
set k (k + 1)2 S- J* j6 I& b3 b! u" U
]1 L) q0 H5 c) h" ~
set [local-reputation] of myself (local)
* z; H& d1 \  U; h0 v% F, W0 zend/ O. E0 W8 b9 |5 u! N+ i
- w* B+ k: Z- S. M
to update-neighbor-total
- M& l: d# j* f2 j4 X
% K( O, _, A0 a9 K0 `# W3 X: tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 d" l& T0 P% S" T4 _6 j- X' N
5 V- g1 P! r0 w3 J- J' G
, U& @# U. R% x
end( A" b3 p9 K5 D5 K3 D* y
. T. j" R% ]% N5 ]6 f3 w
to update-credibility-ijl
0 x2 b& O: a0 `! G
- R, X1 p5 d. w# x6 J3 d6 v% o2 p. e" u;;
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。# u# Y. e* ^+ r% q/ r' E% D* U* w, d
let l 0
) j. a& I& V3 ]. I$ P5 i8 Mwhile[ l < people ]
' j4 \/ w8 a* a, T0 d) Z! \$ \;;
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  h# |1 s1 ?5 t; {
[6 H* c9 p% e6 k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  U5 L) r- ^) d! t% i1 B7 X
if (trade-record-one-j-l-len > 3)8 u( d# |: n/ b9 }/ 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-one6 d' J" B# d* |8 q+ z
let i 35 a4 @. M3 k# q8 w4 k
let sum-time 0* K$ @) B2 c% V/ b0 N$ |
while[i < trade-record-one-len]
$ T$ k& |; U5 v2 U[
. d- N& a5 G2 D/ lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 }, w& g$ g0 Q; y
set i
/ k3 X: [1 O; c8 K2 o( i + 1)
1 g0 T( R0 C, y- N& x6 U5 @0 h
]) D/ l" ~9 H5 [/ j4 Z8 p
let credibility-i-j-l 0$ l9 ^! z5 Z& [9 L, u9 j! I7 q
;;i
评价(jjl的评价)& q1 J8 f; D* a; x) L
let j 3
' y2 \: o) v) ]: ]let k 40 N1 s! }% N: ~: w7 r8 I% |
while[j < trade-record-one-len]
- D0 |$ [0 d* C& V% a  @[
% A$ f" V% E( i8 ?. ?+ L* }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
9 O  B8 q$ ]9 Q' H: Y( s- H- jset 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)
% h5 l: E3 ~- S! ?' I9 Iset j( [+ A  v5 |4 `4 R) H! V
( j + 1)

% `5 e! Y) g7 ~4 l. K1 `: B]
$ r# `9 g/ ~$ Pset [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 ))7 e, Y2 O9 J$ @# I0 f

/ C, {2 I" F  K; i* W9 @# z5 C+ \
# D& f2 S0 G9 U4 T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' ~# f/ a$ `' y3 C. b;;
及时更新il的评价质量的评价
3 @' |5 u$ }1 t( C  y# d4 iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& ~. N4 }5 [1 H; {% w$ ]
set l (l + 1)
* g0 K+ h: z2 \) w. y]
* u3 J7 x1 t0 Yend7 q2 J: j& M) K4 y# [# c

6 P/ \) T- C* e% ]  v* B: E# _to update-credibility-list
* y  K! A0 A8 q8 G3 [: t% q) Tlet i 0
0 y- i% Q6 N) ~/ S/ Pwhile[i < people]
, m' I2 M4 y! m. x. G[
* k* C" g' A7 i3 [! wlet j 0# @9 G. s: e6 e! R4 ^' Y7 L, E* e! S
let note 00 d8 s8 o/ V  G3 T
let k 00 h, |: I" M+ Y* {  t) H
;;
计作出过评价的邻居节点的数目: K+ \2 |: r# u1 K0 s* n
while[j < people]
% f  A  t& K$ S; S& E+ r1 O$ g[
4 p) n. B, G! v0 ^0 U* K$ rif (item j( [credibility] of turtle (i + 1)) != -1), H' B% B# o9 N0 g( M3 G' Z
;;
判断是否给本turtle的评价质量做出过评价的节点& G4 P; f/ X. L1 s
[set note (note + item j ([credibility]of turtle (i + 1)))
! a# f% G2 d) s;;*(exp (-(people - 2)))/(people - 2))]

! }- A- F7 N+ [, v8 W7 A4 kset k (k + 1)
) n' L& O3 ?: R]
: u# j1 ^$ ?4 oset j (j + 1)5 {* H' ^* y- I3 X6 E
]2 n7 o0 a& v& i9 B4 o3 C0 x" f
set note (note *(exp (- (1 / k)))/ k)" ~* S1 i5 M- N* t0 |; @9 \
set credibility-list (replace-item i credibility-list note)
0 T- Z4 s% R4 f- Jset i (i + 1)" W0 M" X: ?8 l) t3 V
]+ q# o0 {, {2 l& S+ }  O
end4 P5 n- n" N! k7 L, K

! Q! b. ?) b% ito update-global-reputation-list
0 y9 \' U% y* t- F+ m  ~1 K8 K" xlet j 0! c6 j8 T- f. M
while[j < people]
$ t* r- H% C, I7 X! a- g[
! t( E9 D& D5 g9 J& ^, klet new 0" {* @" g0 q6 W. g2 k  u$ J5 ~
;;
暂存新的一个全局声誉
1 F. \* R; V" e. ~. ?% D( }6 V. Nlet i 0, I, y. ]( l( Y- G6 h1 p
let sum-money 0
! C4 P3 N3 _% l7 f9 alet credibility-money 0
2 m8 K, E/ s3 j) ?8 o1 U0 o, bwhile [i < people]' P8 m3 {9 P5 z) s- H
[
% e8 ~; M  j- v2 ?; Z, qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' g4 S, s) ~# N6 d, o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), f8 U% U2 Q! z( L! n
set i (i + 1)
. S7 H0 i* \$ I]" ]# U# p: W) D2 l
let k 09 j" k: z1 C/ }* E; L
let new1 0" \: c+ @0 N7 t' ]% d6 ~
while [k < people]
+ C* O& [" T0 s5 n2 D1 k- ~$ P8 l+ y( N[
1 \: W  n: n% F2 i( z7 a0 q6 sset 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' t( Q6 Y/ f4 W' K* Mset k (k + 1)
' q3 V) M- B) J  m]$ p: N- L/ {4 }6 L. n- D4 Z) y- N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 y9 e! ~# @- B! i: y9 N
set global-reputation-list (replace-item j global-reputation-list new)
# o1 `% P) J: D; pset j (j + 1)
; {; L% K4 l/ D! f, p% R]9 G  F8 B, r5 w+ T- `
end
' g# q" W7 g0 K
2 [7 T8 _4 P0 F. q' x7 f
$ q8 E+ K1 k- M# q& E5 ~5 i
8 A  \' c9 R/ \) Nto get-color$ S, ]' I$ a5 B

3 J0 `# |3 `, H' n" N4 Z$ Uset color blue
  J# D/ q  }" {. w  |; i" b
end
* e* @3 C; \: V9 x% g4 u3 y+ U3 V+ A* R1 g
to poll-class
5 q; l% }. y7 [1 ]0 t. a* d( Dend% V6 L: i* [9 X( s4 A3 v

" o  y% A3 q; M+ ato setup-plot1+ S: L" Y# D. ^

; e* ~2 c% R: h5 Y% W, V) o: v6 o0 u4 qset-current-plot "Trends-of-Local-reputation"
% g7 S5 K, g6 X

) g. Q3 O: a7 zset-plot-x-range 0 xmax

( S# \0 |8 \7 r8 A7 S/ S, l( Y# [" }" A0 W0 @* }2 _5 R* ~
set-plot-y-range 0.0 ymax
3 C: [( ~: r! v% q
end
/ C" ~3 p: R! n# p& p
) G6 K$ D4 d9 F$ D% q. T) mto setup-plot24 i. I/ `& H2 w, U1 T+ E$ G+ l- z, Z

2 G7 Y8 @$ ~1 U; i$ Mset-current-plot "Trends-of-global-reputation"

3 X6 R, q3 a6 v6 a
! \$ U" l  G" eset-plot-x-range 0 xmax
3 H  z4 |* V+ N2 @4 c

8 Q" `- t# Q4 m  o! N+ r8 S! [/ V. Fset-plot-y-range 0.0 ymax
% p6 a; b/ R/ ~  C
end
# Z8 v. b) f4 [4 s0 P
0 J! |+ b1 }0 w8 y3 ^4 A# \. U8 Oto setup-plot3# ~2 u1 `$ ?( d0 I
2 P5 I$ o! C3 F& J: }  d7 V4 G
set-current-plot "Trends-of-credibility"
: K7 o# R% o+ [8 T

/ c5 t& q" A2 n3 Y3 K2 bset-plot-x-range 0 xmax
) T4 F& ?3 M7 A+ m4 d

' W/ @" e! z' D! zset-plot-y-range 0.0 ymax
+ ]" {2 z* R0 P2 j& |
end3 a$ x" j& \" b. N

/ k+ J* g% I* q$ D; {to do-plots$ Q* C- A- V- h- X! @: t( ^
set-current-plot "Trends-of-Local-reputation"
! j7 P0 W/ i" u" M1 B( Aset-current-plot-pen "Honest service"
5 x( Z. X. e2 j+ \( o% Xend
& |9 q) \0 I/ b5 b7 D" G
; e0 R. e' t5 O[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.1 p/ _& [3 Z4 K" ^3 Q7 [
0 V' o1 l9 m  J$ j) X% @, @6 F
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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