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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:
# d: ~! E* ^# ~2 _% [) N! A  cto do-business
5 |& G" R, Y9 z9 ^7 R% O rt random 360% ~' I. D" L+ u8 N- s) X
fd 1
  s! O$ {, J! [0 A ifelse(other turtles-here != nobody)[1 c  M' H/ f5 K, f; g
   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.! }3 }5 C$ G' H% W$ ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : P  m, u1 ?; G0 ~3 J. W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 u: P/ B& p2 R5 V! h1 ~  ?   set [trade-record-one-len] of self length [trade-record-one] of self8 S5 P5 ?5 z  J9 b) \+ a
   set trade-record-current( list (timer) (random money-upper-limit))
/ z: I5 t& Y( u8 H# m, V$ Y9 f7 `9 K) Q8 x' z% |
问题的提示如下:
! z. }" Q8 V6 H( d
5 ?7 Q3 l# A& terror while turtle 50 running OF in procedure DO-BUSINESS
5 g* t$ i8 ^' P# g- H2 s  called by procedure GO2 T: b. t0 D  O+ n9 h
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
# M# S  E- H* j8 k9 ^! g
(halted running of go)- k- V0 G+ h8 }9 G( [& M' }/ Z" W
' o5 U" W6 P9 Q) q0 m! T1 [/ y9 o) v
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$ e7 j( n6 }8 F/ a# f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
- ~$ h+ A: Q+ e) e; Hglobals[
- _& Q2 ~: S0 xxmax
+ C/ w( |; n6 w: k1 \3 X0 v# lymax1 }8 E. M* A& X  A1 {, e6 i
global-reputation-list
6 I( k% t" l9 R7 D0 [4 g) a8 z2 A5 Q9 \0 A% E1 G: Y7 u; [9 [* g
;;
每一个turtle的全局声誉都存在此LIST
+ P4 L% ^: R7 B; v5 K& |8 g" gcredibility-list' K- A$ c% a. V7 N+ I3 B
;;
每一个turtle的评价可信度# p( J  T0 G, d; V1 u
honest-service
: q2 _- x% X# v. W* o7 ]3 ~; u' Lunhonest-service( T' ]8 g0 \3 o
oscillation
& ]* A8 T. d4 F: M9 Prand-dynamic" B9 x0 ]6 v3 K7 e4 e( \8 P
]
+ S: G+ J/ F4 m1 W3 X" d5 b5 ]! H+ F: B; G' E9 X
turtles-own[9 p2 l1 j' P: s6 v8 j
trade-record-all  A4 v8 V% O, S* U0 R% C# E
;;a list of lists,
trade-record-one组成
3 e6 M% `( a" ?! ~* l' w  Wtrade-record-one" ?. T. s& d% V. ~$ x; g/ ?, \% }
;;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' t* i8 j# O; N6 z
- D* ?( z5 s9 i, `% I) ~) x
;;[
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]]
( g3 k2 n. B& Rtrade-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]* V9 t8 A6 q! ?
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
$ p$ Z" V+ f) K4 g  j, }) _neighbor-total+ n: G$ k  Y( K/ n; ^5 i  g' c1 f
;;
记录该turtle的邻居节点的数目3 V7 p8 L& Y$ ]3 N9 O+ w  S# `$ Y. \
trade-time+ m; y$ y( P: Y$ k
;;
当前发生交易的turtle的交易时间
2 a1 D$ n9 F9 I1 k7 lappraise-give$ j  x) ~! s, f& ?7 ^1 A
;;
当前发生交易时给出的评价
# z8 i1 e% p$ F/ w* `appraise-receive  E1 V0 _3 I; ~6 F1 I5 F
;;
当前发生交易时收到的评价) k! c& E1 u6 P( J$ H
appraise-time
6 q" c1 o- f. o; t8 p+ a; G;;
当前发生交易时的评价时间
, n2 D# ~' E# Y" X$ q" Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉5 D* c" m- u8 `2 @7 \/ j
trade-times-total; O7 j! _5 @6 c
;;
与当前turtle的交易总次数
! r' f: h; r( Q, T3 |. `trade-money-total' _; ?/ ]+ o- R! m1 g  y
;;
与当前turtle的交易总金额
% N6 i, ]& G1 Glocal-reputation
3 w) o6 @; V+ b8 ]% ~9 Y/ Rglobal-reputation+ F$ `2 C5 `# l: x7 {( \( s$ _9 o
credibility& Y) E. \9 \( c
;;
评价可信度,每次交易后都需要更新3 n) j- @) t* B6 c& r. t8 Q
credibility-all# b2 ?* E- d- q2 l7 C+ s5 G8 d- T
;;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
1 L  l% b" n3 ]: s, l1 k/ A' Q/ U) M
;;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  u# o8 \9 ~! y9 ]7 f
credibility-one
3 e( ^7 p% H# l  W! b1 {;;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 Y1 V, y" w* gglobal-proportion: r6 K5 a+ ~3 b% J, t6 d* q" N; n
customer
/ Z9 p" h) ~9 w' [1 m: n: pcustomer-no& B2 U' b7 ?: R' u
trust-ok) a, c1 e; u. e' K( U
trade-record-one-len;;trade-record-one的长度
7 r2 k0 |4 M! t7 d+ w]
" q) C- c% _1 r
  A9 J5 U% _: Z3 }/ F2 g;;setup procedure9 K5 A" p# O  ~( s- H" ~* v" D5 c& m

! V% d$ S- U1 u: Lto setup& x9 Q4 D) {  A5 P+ l1 V

, J: P; A" N" h5 `ca
2 i# f& J' h1 Y  L! o$ a

' s1 \. @* a1 G, v( b' G- V6 Ginitialize-settings
* j- V3 O& k) i$ z! y
/ f( U5 k, _0 s. F
crt people [setup-turtles]

4 A, t: j7 ~( p' H2 i" Z# [6 W
/ p' e+ j/ @8 n' E' O6 ]reset-timer

0 C! v# ~; j2 Z1 t5 R: L- v: m- D2 {: J2 }% w
poll-class

7 p7 ?' h% N* d
! I" e; H& @5 E2 B% V- }) i( Asetup-plots
  y9 D4 d$ v8 `7 O
3 ~/ h: C  \0 m8 x  H# _3 h' P
do-plots

$ y3 i5 }# ?7 g- [/ |8 \. tend
/ s2 c9 `$ R1 v8 f& `5 `5 B, m& k
to initialize-settings7 ~. u; e  j8 k' V0 Z- {
) I4 E; U# c4 ~* {
set global-reputation-list []

9 u: Z0 B1 B0 \1 [. v0 x
3 C/ e) w1 G  r1 H$ ]) Qset credibility-list n-values people [0.5]

: a+ D* S7 w$ w! t$ d
7 U' V8 D; ~5 U$ Sset honest-service 0
+ e" f7 K+ q6 u' V& p- F

% U$ u5 Z3 m  d, @2 ^% O6 A1 Kset unhonest-service 0
# n* V& W. ]. @" t- J& r

6 T$ p6 ^6 ~" @' F7 j% Xset oscillation 0
$ I$ d6 _$ y9 d7 K/ [' d
* n. c0 g. k7 Y
set rand-dynamic 0

6 h4 y9 B3 }6 U( W- P# L, N- tend
7 X8 ^3 v; S: Q! I, z7 O% _
6 t7 Z) f6 t6 l; W" m4 mto setup-turtles
1 s$ K& v0 w& g0 B  Hset shape "person"( ]: V4 Q# W$ I% f$ e. w
setxy random-xcor random-ycor
7 }6 B3 E8 D- cset trade-record-one []1 q0 N/ H9 z" @  y
! \4 W* I% ^6 @# A7 Q; [0 y# k3 j" T
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 J; [5 w- f6 I  w' M/ k3 ?

: f: r+ t+ C0 R0 D, |set trade-record-current []
/ s. Q! n5 C  c  q; Y) N; Bset credibility-receive []
6 d2 ?8 M) w6 L3 h! U0 _set local-reputation 0.5
4 i' ~& z9 d; r* j5 m- kset neighbor-total 05 v5 W6 @# ^  u  |0 q
set trade-times-total 0
+ N4 e3 ^" z- v' @1 @5 U3 j3 F# C" {set trade-money-total 0
' u3 }# [* Y  {# Bset customer nobody
( r) d( `# [5 a) bset credibility-all n-values people [creat-credibility]1 Q. i" v  \3 a3 O; @5 q$ B7 r
set credibility n-values people [-1]  H; H' |9 v6 q! f1 O$ S( J; Z0 t
get-color
0 |/ X3 R9 U* T& x. r) r
7 w1 F$ ^8 S1 ], s' {! ~9 N# B
end1 n; F1 i: g0 _- E
3 A/ [& y' @1 Z; U, M
to-report creat-credibility# O9 @8 z% D  x% A4 E
report n-values people [0.5]* S5 T8 ^9 }! _$ v% Q
end
& ^' g  D( S) z! `4 {% |+ e( b0 q
# S7 M# V: c- c5 Y4 F# [to setup-plots
0 X. [6 l. n* `0 H0 v
: R% `" Y, L& iset xmax 30

. x, M) k% X  Z7 n1 p! K/ {
' C8 u) j4 E) k" I: M6 a7 Hset ymax 1.0

7 T8 K- ?/ {) k  H& @. ?6 ]' f* y- {$ g6 W6 V/ Z7 R
clear-all-plots

! P0 X2 w  Y+ I" [" K) _" c# X; @3 m5 f' T7 {
setup-plot1

" B+ ?( W: w4 V& R- I" N" Q! [, M6 E5 S1 }
setup-plot2

3 r) |, f2 F5 P9 ^# M2 ~5 c4 B: X+ {. I
setup-plot3

3 H% r/ \0 r$ h# e/ L7 Q4 v5 Qend
# W& A7 G9 l1 c, H
. ~4 t1 l, o$ w* D# {% H. P;;run time procedures1 i' \, r* {) N

3 F) X" s( h. o$ d) w  O4 B8 w% `to go- V1 m$ k  O+ X, w# `8 x1 o( Q
9 p: _2 q/ W, X4 m. I* |1 j( s
ask turtles [do-business]
0 Y. r/ [$ [3 v' a7 j
end
$ R: {4 ]  M" e1 s
8 H- \# L7 s5 y7 s; Y) X* ]) nto do-business
- B& q% E5 E. u2 Y9 o
. U+ Y: d% X0 r  d) r# b4 e& o7 m- R

+ R6 O; p" I1 ^rt random 360
& U9 `% ?/ I7 z6 M+ T# f8 A
9 {$ b2 Q1 y' j2 G" |. G9 I" c
fd 1
7 ~. }, l8 y+ y( S% S# P! r4 s
, H" L: Q: U# U' |7 ~
ifelse(other turtles-here != nobody)[

: [* K. t, ]" C0 F3 }: j' B9 m& }" I) N8 z* Y1 |
set customer one-of other turtles-here
. d; R( t) y# {/ B3 s

6 _9 J# Y; c1 E" t6 f9 y4 @. X3 b; t;; set [customer] of customer myself

/ \8 x4 {0 m% U6 Q# q9 C. o/ s3 ~6 U2 L4 k: K+ j3 o! x
set [trade-record-one] of self item (([who] of customer) - 1)
/ W( B  _2 T) o+ X) k[trade-record-all]of self
8 W# ?+ O/ c% v7 `0 P( I& Q5 s2 {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. A, x0 Y  q1 o4 L# \7 x8 v
5 K1 r5 Z5 k( M' A5 N; e% j) `" dset [trade-record-one] of customer item (([who] of self) - 1)5 s& U! @5 y  H& d& R- |
[trade-record-all]of customer

* B0 v# G( p# _* J6 K1 }
5 {! f* d8 T% z$ y3 dset [trade-record-one-len] of self length [trade-record-one] of self
2 H4 Q0 t6 v7 j/ \& n1 U& ?
' u7 ~6 d5 e$ d7 b+ v
set trade-record-current( list (timer) (random money-upper-limit))
+ C3 r: K- R# i& y/ h8 }! H

, W: H# u& L: a+ B2 L0 Y: qask self [do-trust]
1 l. o: ?4 }  {# H5 }  v;;
先求ij的信任度3 d: f9 z; U6 w* T% K* S: m
6 K& e1 v' P# `, l# k' {) R) f
if ([trust-ok] of self)
" |# d( G  {: W; p+ L;;
根据ij的信任度来决定是否与j进行交易[. M7 Y2 A; C9 m$ f; |
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 r) P( N6 }% [. q" n$ W% m
; U' v7 @9 Z; D3 c; P3 d
[

9 n. \. G6 v: H. @. A" D% k2 U; n/ m  _
do-trade

' r9 i& I! C# m, R4 |9 |2 ?  n; k: H
) p- q7 O* [& M/ H6 u" \0 Yupdate-credibility-ijl
9 {4 G( C; ?* }7 ?* ]. J& A

( t) |. o$ o2 i. m1 S. q' l  mupdate-credibility-list/ a# S( c$ F2 `" m7 K6 {7 x

( E1 R1 e; x3 S+ c4 |/ e
# {4 n4 d+ e" Iupdate-global-reputation-list
  G/ r5 `5 b: D& `; d

$ x: S! X2 u' U8 H7 v7 g, opoll-class
: [# M: A3 \& i" `: f$ ?: O& z

9 z$ h( N# p* t2 y: `get-color

1 `7 e8 {1 G, H
- r  Q% e2 `0 b]]
3 \8 [/ O/ b0 `( P% B4 z# K, q7 U8 k. Q2 ^" C
;;
如果所得的信任度满足条件,则进行交易5 O& c- `; N: d. w& i- h

& w4 G$ s3 ?/ T8 u2 r5 m: d1 ~8 |[

. J( N* b3 S+ m5 U
4 G+ S; v5 U( q( W8 Vrt random 360
! F+ b: q% ]7 J# I6 `
- X# l$ Q) ]- C1 I+ u
fd 1
3 p8 _  e' S3 K1 R' Z" b# g5 w. G

8 D( j& J1 |8 H) j) \3 B]
" p$ D3 Z4 n, ~# {2 g2 V; O
9 ~  }8 v" n- v  J, Z8 t  ]' J
end

# J, f+ X+ z; o$ s  ], g
6 Z& X: y( n5 r, m/ B2 s3 eto do-trust
2 F3 f0 F. y: J! q+ Tset trust-ok False* k0 {8 _* U5 b  u7 `( Y9 A8 O4 V

( T% W' M/ U( x! d6 E! x7 L
+ t1 V' ^& y9 M7 S. _! Q/ x+ _
let max-trade-times 0: c2 O# W9 a% Z' z$ o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* V9 @! U0 D" @! H2 ^: r4 z
let max-trade-money 01 n, C! V: Z+ ?' T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: k) ?7 r& t! U* D8 B8 mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 c6 ~, \- k/ g5 ]; s3 X" s, w+ m; k+ P  L( N1 p
& A* K, I  X3 w: _
get-global-proportion
, B. T# d3 M" d9 A0 U$ \5 Slet trust-value9 z" I/ o# E! q  r9 h& b
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)
# K; {$ q  A# s) b8 ]
if(trust-value > trade-trust-value)
/ c: b  _' |+ u: v[set trust-ok true]$ B% v' x$ X0 {, }; a2 D  ~
end* U/ \) A; u$ c' O6 u
( Z* g6 I6 D3 m1 g. _0 g7 E4 q
to get-global-proportion# y# u, i+ R( D3 A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 o! ?0 v2 M! e: o9 h" u
[set global-proportion 0]
  {: a# D' ^6 ^7 {+ \[let i 0
+ }# N/ O3 Y! |# e' D' @% E3 E' _let sum-money 0
8 J$ H$ a) @' \# p! q1 iwhile[ i < people]
+ m  z2 N: s) k9 a/ k[  N) P$ U" `! W3 p0 s
if( length (item i, A- K. P: r& Z/ `* v
[trade-record-all] of customer) > 3 )
3 I5 }. N/ U! U% a% b% _
[+ v# b4 g7 N( _/ ~1 r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 P3 |  S8 k8 H2 a$ l
]
3 j5 l- X2 |3 C]
6 b/ V) W5 C& {let j 0/ h$ C1 D: v: c$ O# [. w2 k
let note 0
) G2 Y& f% a9 M+ ^/ [while[ j < people]
; ?, P7 b- f9 [[' i4 R2 ~. i3 ~$ ^3 `* A
if( length (item i4 P+ @2 M; w3 n2 s
[trade-record-all] of customer) > 3 )
" P6 {, S- j1 w
[
) b/ l/ S5 C; B/ pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! j( D0 v0 X/ M" |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 I& s& j' D( A0 Q/ i& l. v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; x2 `) s' b) r8 V4 b& s( a]9 v6 \5 A+ \1 h! p; r
]
: G* Q5 _2 U: y6 [set global-proportion note
/ |  Z+ K) M; H$ W; {4 L]
7 }7 [4 H4 |" B6 b' f5 _end
/ t( m+ M+ @* @# S7 y- G3 J5 `! t" |& ?+ z
to do-trade
9 K: L1 G3 g; e, `9 T" P9 K;;
这个过程实际上是给双方作出评价的过程
  V1 P. |; Z9 B# i; M2 A5 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 ?; X9 G1 ?% Z% o, t, xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% Y& {/ x1 ~) @9 H! Z0 z  Yset trade-record-current lput(timer) trade-record-current
' N) o" z1 x( ~;;
评价时间
; m) o' j2 y0 {ask myself [
  F1 z: t6 g5 c/ e4 Y  [update-local-reputation
6 _/ B' p" P, Mset trade-record-current lput([local-reputation] of myself) trade-record-current( q! _+ S: t6 m( P& p% ~# n
]
  M' h: B+ s( F8 P: xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! ^2 f. J9 J" O7 U, i
;;
将此次交易的记录加入到trade-record-one
1 k- ?; A" h3 Z/ D& |% ]; t% R! {2 Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). l" T5 S6 M" }) ~2 G
let note (item 2 trade-record-current )/ z+ @. Y: ], e4 y3 k" Y1 V
set trade-record-current' v* Y6 T; h: X! ]) X3 }. A
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 L) p  L" z$ r& G- I* Y) K7 Z
set trade-record-current
" P3 A6 a7 t2 z0 q3 s) K. v8 G4 J(replace-item 3 trade-record-current note)
( f8 M2 t' m8 K7 _- N4 r4 r# d; ~) x
# h* a% y$ u2 Y2 }9 E  z

: m2 x2 b  p. Bask customer [0 C* |: J% Z* S7 x
update-local-reputation5 n' P  b6 `4 l3 |5 D
set trade-record-current: T9 e* {9 \" p! Y: a% }6 Y- e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ {9 W  d" O$ N* }% B% O
]
5 ]1 r3 l: O1 K6 n: _: D
! S2 {9 L2 L$ s  I* H! Y8 o8 w4 ^+ B

6 I0 U% l* N) j! r  X; `* f0 W# ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# G- G. D8 v, ?! D) \

  [) a$ `/ k( e4 q( w) |2 [; \set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( o3 b! H1 i* _3 ?- l  D/ [- X: v* [
;;
将此次交易的记录加入到customertrade-record-all1 G  j; s$ f% S4 V8 J
end5 V5 n. b2 o6 a( [  L6 b6 h

% v; H0 B2 s) `/ d+ bto update-local-reputation+ F# J( a6 R: n# f5 M' ^
set [trade-record-one-len] of myself length [trade-record-one] of myself
( z" ^7 G8 w9 {) r: [' m4 V; r1 M6 I' m: D

& d2 V) d& v/ H8 n9 A2 J;;if [trade-record-one-len] of myself > 3

7 p' q/ @3 C4 X2 A, ?+ lupdate-neighbor-total
$ W7 p" r# P0 ]# n) L& \0 u;;
更新邻居节点的数目,在此进行
5 T: [7 O4 I" E) O1 o- T4 hlet i 34 N& m2 ]; I+ w8 W
let sum-time 0
! \$ v  Z3 @& Uwhile[i < [trade-record-one-len] of myself]
8 {4 R8 T6 H* @- `/ F4 a) O% Z[
: V0 @# w; }, H. z  Oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& n& C8 X- |8 F* H8 e; ~6 Dset i
4 T& `$ V  w5 L* t( i + 1)

. _$ h9 L( [8 [! `* I$ D]5 ?; s- e+ L' @9 Q
let j 3" S+ Z( r: p9 x5 E/ B
let sum-money 03 m9 U0 Q% W/ {- m+ E$ Y& d
while[j < [trade-record-one-len] of myself]
# {1 F# v2 T  q  A2 X5 Y[, F- a* a( }# ?
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)
7 ^" |: b0 B/ I" z- ]set j: Q; z$ S: D9 T) r1 ]8 h
( j + 1)

' c* N! B! [+ ]. ?+ i/ A]. h# {9 A) W  {$ F+ [. H9 C2 [+ \) V
let k 3* p# r, J1 F' o( l1 ~4 f
let power 0! n( a! e% K5 g) O6 i+ F, j9 w. t
let local 01 n9 J! `: ]" g# x% G
while [k <[trade-record-one-len] of myself], ?* L: K7 n% r* |# K
[
+ N0 N& W; G8 d  ^' Vset 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 i+ m3 A! L. Z! S$ r! x. |: ^set k (k + 1)
6 e6 ^) a/ |" A]" b# h% W+ W) Q; S
set [local-reputation] of myself (local)
- F9 ^1 Z2 e5 X# |2 M! Eend9 p) c& P2 a6 N! w+ `/ B) ]

. _- D3 y% J  [* ^5 Nto update-neighbor-total
7 Y, z3 ~/ a3 E# v2 ~" D$ P
7 ?: S& A3 p% @8 kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 A! i& S7 E+ w" o5 k# q$ O
3 |7 @4 n4 \2 v2 k  x: a

1 ~3 e  Q# V9 H* ^3 K, V- d0 hend! p9 g0 u+ d) K- s
% P. W( R% y5 e% m* i- `- T
to update-credibility-ijl
: t0 b% O  e4 {/ F( @  C6 P1 ?' f
1 l2 @4 _( T" h;;
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。
9 s5 ^% h& z! {  ]9 E4 T9 ~: i5 mlet l 0
1 {! @& ~5 T2 Qwhile[ l < people ]
2 j- ?, ]! v6 w9 w& n4 I& M- V$ ?;;
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
" z# N- p& h7 m( H% V[
; |8 \+ \& f) llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, S. C, X) T; t1 r* j7 W3 B, lif (trade-record-one-j-l-len > 3)
; C# l8 f1 w0 s( u* L! @[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" D' y$ {- E8 B* Y7 o
let i 3- B$ l3 M1 ]' c! t  \( w! i2 G3 H
let sum-time 04 ]9 S- X: m, |5 q, m: w! ?
while[i < trade-record-one-len]
* i9 w0 k9 r8 c; l[* b0 C/ J# r6 n7 v2 v2 \2 ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% s$ A( F3 ^) g6 k8 @8 q7 Bset i% R) t2 l* r' q& J& Y
( i + 1)

4 u( h/ ]( J( b! `/ J4 E* a( c7 x; t]6 l" N, ^" z# w# e9 ~
let credibility-i-j-l 0
2 C2 z/ i$ C1 H  J. y;;i
评价(jjl的评价)6 L- p7 R! u+ u, w( v1 l
let j 3; C' d) {; L8 |' P+ _5 O# K
let k 4
) F9 l5 k6 T2 U; _! dwhile[j < trade-record-one-len]5 V# d! Z( G& G1 S6 C9 E
[
; v4 W; ^! a7 W2 T+ R5 B5 [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
' U% x8 \3 z$ z; S0 Tset 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)
) x  Z- D$ M  qset j
* l( [6 m& b: B* w6 Z5 j( j + 1)

6 v0 U' A& x% E* p4 ?1 ^) J' \% ~]
. D) h. g/ v1 V  Lset [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 ))+ h% `6 P  x, h" r; J& c, |, `% X" q

" a. K4 c, K4 s* m# o0 C
( A3 p3 f. Q* M& s. B5 S3 R0 h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); C/ d) m# V4 @/ E
;;
及时更新il的评价质量的评价% v# h  }% F: E+ S2 w  t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& v/ L  [" A* R# \
set l (l + 1)/ e, ?# d/ c& Z6 H$ |
]* c" _8 Q3 l( q$ _6 J7 H
end
* E6 I. T& K3 H  [/ N2 H9 w  ?, [
- ~7 g9 k2 [( Rto update-credibility-list
# q9 D& l$ U8 D2 @let i 0
6 l+ ~6 d! J" g$ W1 s3 y5 ^while[i < people]4 G# a% S" S3 Q3 J$ z6 y2 K! o1 B
[  Q& @+ j2 e+ ~( `4 B
let j 0" r7 l7 R+ O, p" ?$ L, j" U
let note 0
( h& p; o- d3 `5 s3 }7 ylet k 0- i" F. x4 u8 L7 Y3 z: T
;;
计作出过评价的邻居节点的数目
) J# Y* Z2 ?6 X7 @# E8 cwhile[j < people]1 Z: b8 {9 I5 ~6 A# p. g( U, h1 c
[
7 [: C5 W4 T2 _& eif (item j( [credibility] of turtle (i + 1)) != -1)
. o# t( B3 F2 X4 y2 l1 |;;
判断是否给本turtle的评价质量做出过评价的节点
) h/ w! X; y4 V  N5 d4 j) n[set note (note + item j ([credibility]of turtle (i + 1)))
0 }2 Q) ^' V# O3 A) F9 ^;;*(exp (-(people - 2)))/(people - 2))]
# ?; r$ K6 `" b' J
set k (k + 1)$ l7 M8 u0 F9 b5 U& U
]
# `; N% I. ~, lset j (j + 1)
8 D$ f7 }2 q7 A' r5 \]
1 ~5 G' e5 Z% u9 Lset note (note *(exp (- (1 / k)))/ k)6 P6 E& Y% }# l* D, p- N7 z
set credibility-list (replace-item i credibility-list note)
  q) q) v( j: R- a. sset i (i + 1)
" H' b: L  S) T9 E  M' T]
& {( Q5 p- B1 r* c+ b5 ^end
( p* i7 _3 C/ X) P9 z( D% k+ l$ A2 c& C+ ?( t
to update-global-reputation-list
' a" J: K" b4 L# F- b* D7 ~2 Zlet j 0
6 Y  x9 ~% T) b1 }' b1 j) ~- N: `while[j < people]
7 Y- P. @+ l5 i: E1 j" V6 g[% M; G. A- {2 j4 q! Y, d( T
let new 01 t$ q; W* h+ F2 X' c
;;
暂存新的一个全局声誉
; P& H2 ]1 b# Q& }" u3 z: Elet i 0& n6 ^( b8 ?; S: `7 u% H7 Y
let sum-money 0
8 G" T" e1 Y& W7 K0 v" \+ elet credibility-money 0( B: a0 c; X* f; a: L
while [i < people]/ A& y5 J0 V) z9 w( a# a
[$ D: Q( R& V6 D6 y; t. c% t$ O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ ?* e+ _% ^/ o. ~: y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 N1 P) @+ |" t. t! ~set i (i + 1)& g2 V& K' d0 r, d4 }0 q( I' k
]6 I9 b# q0 O4 q: e' L
let k 0# Z( L0 {7 _1 B) Q* e8 m7 |9 w# g
let new1 0' M5 @; V& F6 L4 q# c5 m
while [k < people], K8 ~8 J; Y" E# J& D
[
/ X& x: H/ f: B. n: Lset 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)
2 K! _' A) q5 R% j" _  [) v0 Qset k (k + 1)
9 x% N4 C; Y2 Q1 Y6 E]9 a, }$ K/ L3 u" q. \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" W3 G' k* s- B* Oset global-reputation-list (replace-item j global-reputation-list new)  l. g) o7 K' {1 C3 T
set j (j + 1)
: l0 ?* f- P: K]4 g, a0 m& R( I: d4 e
end
1 y' e$ f: {- F, n/ J5 U) f' u! j" M  h2 W; {

: p" G9 d& K. V" p& P9 Z5 u0 S" v/ S& H3 v3 X
to get-color- y8 Z7 x( q0 C& O" b0 v
; H6 [1 Y& f# F
set color blue
4 C- T, d3 Z, O
end2 N6 Q7 i8 @  F& R) c

; ?  u, A. l: A$ m& K9 J, Rto poll-class! }+ \! ]: ?4 ^& Q& I: p
end
3 s1 n$ p  g9 r" ]6 R2 a6 Y# R, R) H2 I  |# N4 P! i
to setup-plot1
6 A. V9 |( ?; b9 t/ r* S8 v
+ ?/ Z; |- L5 Q" p% Z% Q5 Mset-current-plot "Trends-of-Local-reputation"
& O8 L" ~/ O) y, @' m4 G6 E
0 J$ z' v7 [& R
set-plot-x-range 0 xmax

, C7 R. F2 U" Y, }1 I6 |  v0 P5 B; z0 p; H* x/ D2 Q3 P
set-plot-y-range 0.0 ymax

+ e* X3 B- Y- D! O- Fend1 b  B. j+ ]4 q; w. h( g( a

1 g3 g% o. X* z) Ito setup-plot2; E' t9 q- h1 t" |; [  Q3 ?

* \8 a) k: [% w( C; \8 V2 Xset-current-plot "Trends-of-global-reputation"

5 Q  v4 H3 P$ m8 O
  F' S% v5 S* \: N; Mset-plot-x-range 0 xmax
! d1 R. ?: ?8 H; l( }5 Z8 E
# \3 R7 G2 H5 ^
set-plot-y-range 0.0 ymax
) l0 F1 W* z. d% ~8 `3 _% `' F7 I
end  v, l8 f0 h6 k) j7 t3 f! |
, v' g0 K; [% U$ x, f
to setup-plot37 B) t# X' o% `* n+ t

& R1 X8 {1 C5 K% d, ^3 |set-current-plot "Trends-of-credibility"

; H1 O# T6 T/ O7 @: ~$ \0 F/ W% l! f- l7 \
set-plot-x-range 0 xmax

. i5 L/ [! ?4 t# O9 R
  j( W- W1 T# w: x! G) kset-plot-y-range 0.0 ymax
" f1 f8 \! _8 a0 g- l3 [
end
' S+ A& x% e+ \$ ~3 h1 f
: K- N4 {  `5 `; b9 {6 N- Oto do-plots9 H( X/ M, ]  M6 r  z1 y
set-current-plot "Trends-of-Local-reputation"
# m! h6 n& I6 r* a. P; u, e; jset-current-plot-pen "Honest service"
7 Q* n/ I- l* g' l  j& Bend
# A) R3 q" s, m( b) m$ ^  l- N, v: }7 R6 r$ C; |. Z
[ 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.
% F; k3 v0 L9 N
! K: z# b* h. ]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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