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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:& I( M( A; Z- Q/ T
to do-business
7 s* X6 L' J; V3 X7 ?" R$ M rt random 360
6 J# @6 ^8 ]4 y- u fd 1
) `3 p9 ~; D) }! ^0 D ifelse(other turtles-here != nobody)[
! O! j  z2 N) ~; X' |! 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.
$ B4 K0 `! ]9 S9 h+ u; [# T: T. v   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! i. S' v  P# t/ w+ M% _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 C/ T+ O/ z7 ]) w. `4 U
   set [trade-record-one-len] of self length [trade-record-one] of self
# T/ X/ Q6 C2 B   set trade-record-current( list (timer) (random money-upper-limit))
2 |/ _4 M4 k0 z0 e* u6 |2 {4 |8 d- W6 N. E  O5 \
问题的提示如下:; Z5 V0 n& s$ Y7 Q1 w1 m
4 E2 x2 k  r2 z/ c
error while turtle 50 running OF in procedure DO-BUSINESS& ~! K( U( E0 v+ C, R, h$ Y+ J
  called by procedure GO
! H5 j" m% O7 R( {1 X+ `3 w1 {OF expected input to be a turtle agentset or turtle but got NOBODY instead.: ?& U# c( W/ ]1 c8 i) g) t
(halted running of go). [9 i; E# {" y
% ~; }' r, t# _: Z. S, 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~~
. _; K7 e" V! j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
' K/ b* w  K# Dglobals[& x3 D6 x8 m0 x, J" F9 u
xmax
+ c$ M3 v9 s) |% C- dymax6 t( z; b; w, G, ^& A
global-reputation-list
2 y# Y' p: @- S/ H0 S
. B! w! Y) L2 P; z2 L. R' ]" D# v( i;;
每一个turtle的全局声誉都存在此LIST) p, \( w: _1 O6 \
credibility-list! _6 b7 K7 P$ B3 N( }" E& j' j" A
;;
每一个turtle的评价可信度
6 {( i. s: o2 ~. ]/ d" ~honest-service" g1 N  |- G& ^0 v5 {9 U) c( o
unhonest-service
' S3 N/ [% y* `# I7 J) |+ f, loscillation* f' e+ k3 I1 K5 Y
rand-dynamic
5 Z& v* Z* i7 s3 K]
7 P7 m: m( J/ [7 n2 O; V9 e9 _) F) y7 u
turtles-own[. Q( u/ \- ^% @
trade-record-all: N' N* |4 |2 {8 l! {$ X! W6 [
;;a list of lists,
trade-record-one组成
8 C7 n: s, X' o. ptrade-record-one; f3 o$ ^2 P) B* G1 N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ m, q6 V  M8 n% F8 i' o7 e* M9 R9 L3 Q8 \
4 q2 s9 `$ {% b# R. U) c: y
;;[
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]]
8 }" D9 S. E/ M" otrade-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]
3 s- y7 Z3 ^$ ^/ E: |' Ucredibility-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- g* b  y7 v+ L, J  X' _+ K
neighbor-total
' {1 k- `; P0 V# G, x% ~;;
记录该turtle的邻居节点的数目
$ `4 c% r% U, j1 f! Z& F' J8 ztrade-time2 W" W) y9 `. g4 g5 c
;;
当前发生交易的turtle的交易时间& v' F* J8 z9 M# [7 d) u2 i4 _
appraise-give. K+ N! c1 G9 _4 O
;;
当前发生交易时给出的评价
* R6 P: X$ L- B* `appraise-receive, }' F5 [- p% _" X7 h  S0 e, o6 t
;;
当前发生交易时收到的评价
/ `( o3 [- T  r$ lappraise-time
  l9 v3 q9 V$ g1 W5 t4 a% };;
当前发生交易时的评价时间
: ]0 Q" R8 S; E" r, I, E5 [local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" o3 z- p3 u& u' `' mtrade-times-total
1 k1 d6 T- i+ r' f( s# k3 e3 W7 O;;
与当前turtle的交易总次数, a2 _; L: P* ?) A  E6 c7 }
trade-money-total
) N/ [) u' S+ _;;
与当前turtle的交易总金额
1 T3 P' f$ j' ?! w9 \1 k7 Zlocal-reputation* q* D/ |" |7 ~1 `& i" s! D
global-reputation6 A" O! G% a9 p/ L5 T& {+ u
credibility0 A- X8 [. E! r8 C3 Q& l
;;
评价可信度,每次交易后都需要更新* q5 h" Z2 C; ^  a
credibility-all- d$ y/ x/ Z' U$ B8 Q  b; k
;;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
; L6 ~5 X6 _& z9 f: q
% E# ~9 z+ N0 ^* v  X;;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! p  N& Z# t3 D
credibility-one
! _4 z% f  _. w5 Q5 X;;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
4 h6 a) K+ m1 G/ X, d+ U+ Hglobal-proportion) K% R* r9 x# z' a& o( ]6 Z
customer
8 q# x  c* p2 P) V! T& acustomer-no3 b. t8 l- k  v% f: R
trust-ok
; }! O, K7 e/ Mtrade-record-one-len;;trade-record-one的长度
+ @# q3 R' H. P* Q]! u; }7 T! i( k$ `! p* W
$ o: E$ C8 M6 ?% O; ?( Y% R9 r) {
;;setup procedure5 g$ c) z3 U' a" Z, J: B

8 h$ k* }4 T- V6 r  fto setup
( L) h1 e9 ?7 F1 N! ?* ]$ u! f$ H# v. q) D
ca
6 G. v6 J3 {/ @

2 U! {6 d; @1 K# dinitialize-settings

( ~% I% ?+ _- L6 H& T* R6 u9 j, i
0 p) g: o1 r! i1 Dcrt people [setup-turtles]
: J1 k) V$ s1 x+ q8 x

9 `/ z2 O6 g5 i6 Z1 G- j+ C; Q; xreset-timer
# d3 ^8 Q; ^- v. Z5 r( X, x0 k" X
3 N: G5 P! Q+ {3 a& Y% P5 A
poll-class
" T) T5 c& E) \; k- j
- Y4 N7 M- q$ M9 W/ T, D( a0 X8 O
setup-plots
& Z( ^& f4 T9 e4 L& p0 \* Q" j

7 u) g0 ]3 O4 u0 T& Y6 c" ^' Gdo-plots

, B+ ^3 e9 D/ V% M3 T1 `" Tend! w: {6 i* w) W; Z6 S

* B4 R+ L9 d; G1 z$ a. ^& Jto initialize-settings9 l+ v0 w* t3 T' p

( K) |6 M/ ]0 K! z# o4 h$ U3 Tset global-reputation-list []
, f+ u2 D7 h/ I# F1 q
5 \: X8 X# C4 I# E! }: ]1 M
set credibility-list n-values people [0.5]

! e, t9 p4 F9 m) ]0 H9 Q; p$ c7 |8 Y, X
set honest-service 0

) q. W: l# K: U$ R2 B& I+ i- k; D) ^% e# ?8 ^" p* T0 }
set unhonest-service 0
/ o6 m! d7 g' Q% {% C& `9 w, n

0 _" b5 O. q8 E/ F9 m3 Qset oscillation 0

) R6 }6 r4 u% u6 [
5 l" W4 i3 v+ tset rand-dynamic 0
. C" ^. ^( [+ M! n+ k, V* q
end
5 e" d! [. w# }9 K: @  _, u5 [1 M4 u  t* y1 w+ P! U( A2 d
to setup-turtles
  I0 V  x& P  j+ Fset shape "person"
" ?! i0 |4 D* Osetxy random-xcor random-ycor# I; x) g0 Y# ]4 h3 |9 r$ j( o% n6 a
set trade-record-one []; D, X9 X3 z8 p9 H
9 D+ n, S7 f: `+ b# K* O6 n% k! h
set trade-record-all n-values people [(list (? + 1) 0 0)] - ~2 p) W  `* G4 o7 U' J
( H8 L( a: ~4 ?$ M
set trade-record-current []" A2 b; E, P2 p8 E4 j$ h
set credibility-receive []6 ?0 Y+ w( m" ?$ G: d+ [
set local-reputation 0.5
# V" H; o4 C! D% R) B% Zset neighbor-total 0$ Q4 S  `; q! m* D2 Y( W# P
set trade-times-total 00 b6 m+ k- l% k& t  G6 O! ?
set trade-money-total 0
9 W' {/ {$ i0 D0 K6 Rset customer nobody+ \8 o  i! n& c6 t' j" r: q
set credibility-all n-values people [creat-credibility]
- s, r& Y7 H0 W1 S. @set credibility n-values people [-1]$ ]( y: a& \8 l1 I
get-color7 R7 m$ _% f; P, |# a
, Q# b' }$ C+ A. e
end
/ b8 s* L  L9 ?1 T; d
0 |3 F0 b& ]6 zto-report creat-credibility
; e& Y$ d( e  [" Q, y6 qreport n-values people [0.5]; _1 H3 ]. N+ r
end
& R3 c3 u- m' W( v' ?# [: `$ {% I, {
; B/ Q1 w( {- w2 c0 }0 k" _' yto setup-plots
3 g. x- u% r" C8 `0 R2 p, i" ~: t( [+ I) H/ P
set xmax 30

7 ~" y% Z( Q3 Q6 A) A8 L+ V/ O" N$ @' ]; m6 N8 S
set ymax 1.0

( e. t& ^2 P& x2 n0 [% o3 s3 |9 o) Z/ [" Q1 u# L$ l4 v
clear-all-plots
) s  M) `: L/ ?- a
8 L8 r  I$ ^; T8 G0 q
setup-plot1
: d% ?& C: Z1 c1 g& {$ T( Q. o

; _4 j& f5 y! {0 i( ^setup-plot2
- u4 i0 C+ e8 Y1 W: P1 u' \1 x

6 U5 S- F  K" A; Z# g  S  _" rsetup-plot3
3 H& E+ c' \7 `6 A
end
) R! Z: o" r) W
( d5 p% \0 ]: b" i;;run time procedures
/ y! S, P' B1 F% P* b
' L9 o- [/ _3 V  H8 j8 eto go
9 H1 A, M. M9 f3 \' N+ h1 U; S% _- c) m- f6 r9 ~' D. E
ask turtles [do-business]
* Q9 R, D7 p1 V; j# Q5 d" y
end
" |4 L* h; m0 m3 C$ V3 }
) \. k& h$ K6 oto do-business
3 L9 y( F& V- J% ?! }; ^
$ x1 o% Y8 W- p2 j( _  X2 ]

, W/ i% P* L- Q+ B8 ?3 O4 }rt random 360

' P/ q/ t7 c2 c0 f* c2 h# S" N
" W  j" V" p& k6 R+ Sfd 1

* b5 S. i0 J: r2 @% Q! L5 ]( u4 H" C3 a- [( f; ?% ?: K2 P
ifelse(other turtles-here != nobody)[
5 b+ b+ g9 `1 E1 Z8 A' H) ~- y

1 [5 q- j5 W) F+ D) X" nset customer one-of other turtles-here
7 s( L4 L# J% [& c% N" ^" H

# \1 V2 R+ M$ M* C, y;; set [customer] of customer myself
& N0 n8 p3 M( Z# c1 X+ W3 w

: ], O/ p2 C# U1 ~, e( fset [trade-record-one] of self item (([who] of customer) - 1)
# ?* e6 z0 k; d3 y8 L[trade-record-all]of self  N; k, u( R- A9 a) E
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. K1 b0 b1 d& F2 T/ a; q7 M( ~
9 z/ m# z8 y' s0 n7 `( b3 V3 wset [trade-record-one] of customer item (([who] of self) - 1)9 L& e6 a: A; n7 _% B6 I9 f$ W$ d4 F
[trade-record-all]of customer
8 g$ N0 L4 G1 V+ O' b8 [
7 W/ W4 D: ~" ]: W" C0 z: e. ~, S3 D2 y  G
set [trade-record-one-len] of self length [trade-record-one] of self
! M; @9 d+ e5 F' y
! y2 s! f* Q" y7 t, Q6 d( [6 K
set trade-record-current( list (timer) (random money-upper-limit))
6 }/ r9 y% B  e+ f4 Y9 l* I4 o- D
- }1 B' J" H' A) }5 \
ask self [do-trust]/ ?6 }7 L0 b6 M8 f: ]# }
;;
先求ij的信任度
5 J3 v/ O! i' D/ b  \4 H( b& j  u" g, p# x2 w0 F& r# Z
if ([trust-ok] of self)* x- b9 f5 d9 F6 S5 E  O* Z
;;
根据ij的信任度来决定是否与j进行交易[
/ P+ K: m& v8 rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 ~. ~2 _# `& K4 [: ]: j' o+ @, J) `8 U( I9 o
[
; D: N( z9 s. E, _, j3 J

9 h# K3 h' G1 P. c) R6 odo-trade

5 q# J6 O4 M, \8 b5 P9 r
" m$ a$ r' |. [6 Yupdate-credibility-ijl

. A3 r: O7 d3 I# h! Y4 Z6 h; c9 ~% y* h& e) V$ V6 }
update-credibility-list
/ _  A+ z9 o' ~* k) [2 o

- h) X9 ]2 a0 r9 Y( b  l4 T$ o4 i4 C) h- d
update-global-reputation-list

! E  ^( }6 C2 ~$ F7 R1 K
1 X8 A  @) w+ Z5 hpoll-class

$ ?* R' Y2 R0 E8 s+ C
1 N5 X* v, v* T. f7 tget-color
1 F; I/ c0 y4 {1 }. A

  n+ t9 I% V) Z1 u3 @$ g]]+ B- u, i# `: P" [( G" D
0 j' c7 ]5 M" O* N
;;
如果所得的信任度满足条件,则进行交易
9 y% ^& J$ }5 T$ Y8 O
! l1 ~2 \' C' F$ z+ u0 l  D[
; h# ^& j7 _2 ?

+ w& }: u6 ~: Q+ S- irt random 360

- X3 X0 F4 ~" @; V0 Y  C$ f( k
5 Q# ]2 @7 @/ @. V+ v6 H1 bfd 1

/ ]3 x! h5 w7 y
+ y* @6 B  [3 U9 @: a% ]2 s]
2 _2 Z( x( [+ y
$ U7 |4 i3 C% y" A3 O6 ?) |5 p! i
end

* O; F" I6 T5 s9 i1 X. m5 H" o# k
6 m0 X* ~# W+ Q5 V: U4 {% _to do-trust 4 D$ s3 [4 m; O8 ~2 g
set trust-ok False
4 {& @: ]$ Q3 N' w/ H% o3 j- O" U4 b, A8 {# C2 o, E9 o/ t: Z

/ i/ l* [  q) _let max-trade-times 0
* M# T( O  l" O3 Q3 X" [6 rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. B; q  V, r# P7 d0 q1 J7 {
let max-trade-money 0) K' I  L& ^! ^% y) V: h5 W, r& v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& |, K! M5 @7 n5 F! r4 l1 B$ ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; u# t1 ~5 n; n! `6 ^6 c* W
2 U6 @9 w2 }+ c1 W* T% ~, Y% a
: w* {) Z; a& p$ O1 m4 @% I8 @
get-global-proportion/ V2 z, j6 y+ v% H- y9 z5 O
let trust-value
, t- M( C, A" ]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)

) h  A4 q8 J# N% i9 iif(trust-value > trade-trust-value)
/ j* Z; V- |' F4 c/ E4 a[set trust-ok true]9 }3 U$ P8 _* G# T. O4 e* v: [
end& U) I2 k" S# Y; g4 `. c7 ?- `

6 y" k* Q  u9 m& C; M, U- o# [to get-global-proportion
( s: P+ r6 Q2 F6 n; Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# N0 V$ p2 c' m$ R[set global-proportion 0]
( q; ?8 g( x# g' |9 x; }[let i 0
  H# L+ Y" ?+ rlet sum-money 0
/ t2 L! G  F) Z, iwhile[ i < people]
3 I- n; g$ a! t. K' x  c0 ][
1 ~  u+ r0 O0 z& Fif( length (item i
2 p8 s# q! W+ ?# \[trade-record-all] of customer) > 3 )

8 N; C4 f1 e. G& P* F! p4 Y+ ?2 V[
% r- j9 J2 V9 J! N$ w4 h2 f8 sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 `* S1 J+ s( a8 Y- T]: T6 A! ?( g- d# q
]# Q# Q; W! D! s& p) f/ U
let j 0
. a6 S% P3 F, |: y  L/ n; D; |0 Vlet note 0: U: q' m% ?# D8 _/ V1 P* R
while[ j < people]
" a5 V" V: Q$ m( H8 o. ^, }5 r[! s; v6 Q3 I( l
if( length (item i
- p8 y- _+ S; W[trade-record-all] of customer) > 3 )
. Y0 K+ f" N7 S) q
[
( t) q  Z5 u6 A" l& z- w6 q+ Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 R  F! C5 @+ {( t) _% k7 O: n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) B5 H; N. W) }' |, C' J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 ~1 ?- v2 s0 G2 ^4 Z6 B4 s
]4 o  _5 F9 ?8 I* v: O" p
]
5 c: a# ]% `/ q' e9 m( K7 Lset global-proportion note/ h) z5 {& S' v  d' v2 x' {
]4 l9 i: h( s0 B, p% R0 @
end
0 w0 z% ~( R/ j9 j
" {0 T, O6 a& C8 r4 vto do-trade
. a9 w2 x4 \# Y8 U; _9 ?. a; f0 d;;
这个过程实际上是给双方作出评价的过程4 ]" U- N0 n! s9 s+ l2 L% |- \' J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& N8 W# \7 @  u1 J( t( {+ c7 Y1 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 }5 F  k) H- c* bset trade-record-current lput(timer) trade-record-current
0 `( o% P7 C8 ^( J0 M' t/ y;;
评价时间% L' S9 y" ^( a3 C$ t' K9 F: l
ask myself [
* U1 R! L1 J7 ~7 N. L( s5 Rupdate-local-reputation8 ~, X; W# J+ Q) B( G1 J  q
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 p& r& v* j" T]
# ^1 B8 Q( Q# E3 \/ Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) |, T/ D7 g# H  @4 K
;;
将此次交易的记录加入到trade-record-one
; m; ~$ o, N5 M; m9 A, @# Q8 {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 w; V9 v) m% O, b" {, D5 b# Flet note (item 2 trade-record-current ); y3 f4 T+ U( v+ ^
set trade-record-current! `% s2 B6 K7 l( n2 }" [
(replace-item 2 trade-record-current (item 3 trade-record-current))
" j4 Z5 u) D1 M# z: b- u, @
set trade-record-current
6 n7 N$ v, F1 ?7 ]% Y: }(replace-item 3 trade-record-current note)
0 r0 b+ T, K8 G. @( l0 c5 M
% o* p1 M3 I) h/ S* B: {; O

# l3 a! \& j" v( Eask customer [
0 T% e+ l: k, f7 j* vupdate-local-reputation
0 @+ @# y5 n5 a% Rset trade-record-current
! k4 N$ [0 a7 M$ v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; Q' d- j! O2 _8 z1 h]
* E1 q4 t1 N$ ?  h6 J' T3 V% [3 X0 l) E) u/ Z( K4 j7 Q" H

, Z( W  F) L+ T/ \4 o) S5 r% Z8 Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; w  W  \5 X  H" i: B9 A9 B
8 N/ U: c* S- p, f. y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' h8 k8 `2 n. F' {; S. c
;;
将此次交易的记录加入到customertrade-record-all
6 s; p& X7 G1 V& f% K' Mend7 c, {2 @' A! C- C: s% `+ A  R+ E! ]' N

* d5 b) U; [, t! J, Ato update-local-reputation8 Q$ u7 m# @& F. K/ {: w  j
set [trade-record-one-len] of myself length [trade-record-one] of myself
% i) i; b' A: e4 O- J1 z) g- W4 Q% H; R) ^% x, X- X" [0 ?3 v1 R

% W5 D9 J' o2 {1 J2 V;;if [trade-record-one-len] of myself > 3

' H0 u3 L1 U2 h. Q, y- eupdate-neighbor-total
! \% L$ K4 H" y& J1 `2 ]* ];;
更新邻居节点的数目,在此进行5 |3 g! I0 L: l, x- ~
let i 3
1 V4 r( J6 H$ _3 P- Q& d# u& Klet sum-time 0
, B" U$ \4 A3 ?' G, Rwhile[i < [trade-record-one-len] of myself]
. G3 w! W0 @5 d0 F[
# I( k& K* F" k! Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 V" U- l  R; s9 g: Mset i0 ]0 D, @! ~# [% [# p& }
( i + 1)

5 |0 `. I9 E! L, e: ~]
/ ^! q0 r$ S0 F! t) x8 O( }$ |let j 3( Q/ P) z  N1 W' M1 L8 Q
let sum-money 04 i6 F: j' W# z
while[j < [trade-record-one-len] of myself]
# m9 C% H; {6 o0 C+ E[
/ `3 R! Z; C4 w: C: y" Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) ?' ^1 B; O% N: Z" jset j
3 W, Q6 ]7 I3 \# b' K( j + 1)
8 w/ ^; e$ }& n+ `" m
]* N* B1 p. }+ L) g4 Z7 U1 W" t. q
let k 3# N" [/ b# N5 x0 D" B
let power 0- j' D+ W2 d: a. C& z' ~) l- I
let local 0, v; W" S5 t4 n0 A$ v' K3 e
while [k <[trade-record-one-len] of myself]- F( |1 g3 u- f; M: ~* J  V% o5 H
[( S3 h( V, c# x1 }" _' o
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)
( x8 q3 K- k6 k7 dset k (k + 1); j9 W/ I0 }2 Z8 l
]& H' Z) ]0 P* w! T: s* V' ]
set [local-reputation] of myself (local): x& H2 N: g$ U
end
) C* p8 z! n5 h: {8 S; P: Z* n2 q1 b7 @3 _
to update-neighbor-total% g( P- A  d% M
4 N4 m* W6 C5 Z9 ]6 j3 ?* Z! u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* n2 W3 D6 D7 Z5 q* ~; a8 H! z
4 c) G* x' @7 O6 M6 T7 m3 t

$ U( n6 E6 z; S" B8 I" e* e; jend
& o% \! L9 j  w) n0 L& ~2 l  c3 m- }8 V; B/ y  I
to update-credibility-ijl
6 l1 J/ K( x/ P% j9 U8 n: h+ d8 `- D7 _" u7 e; ~3 `8 I
;;
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。( R5 e0 C( y3 i  N) ~; z/ E, n: ]6 K
let l 0
# w+ V; E3 A! l7 C- }while[ l < people ]
4 z: i) {: k8 ]* r;;
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
7 d" Z( w- n* d' _[1 _/ t4 D5 I( U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 u! I- k3 I8 Rif (trade-record-one-j-l-len > 3)
% a8 o8 ~/ a1 r  v- u* a5 Z[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
8 {3 A' J+ S3 u- f1 ^let i 3
2 S* n- U4 e7 b/ @' D5 @- x$ ulet sum-time 0
9 n. T( W) x1 ~# ?) A/ \while[i < trade-record-one-len]# T0 |$ N+ T* |  ]% \. |6 ?$ v
[
9 s9 L: U% r! ^* iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) v8 C5 H* d& w5 O
set i* S8 |5 r( m/ Q1 [3 N6 j
( i + 1)

& I, S5 L$ j, F, [" W/ a]$ _; S3 m# ]6 e0 a
let credibility-i-j-l 0: ^+ n$ Q  c9 z7 I8 I% k# \  _1 H0 I
;;i
评价(jjl的评价)9 [3 ]) |0 }3 L/ J( C* h* ?
let j 3
$ J* n; g! {- ]( T; V8 _let k 4
$ k5 K( N9 d) t  B9 y" z% \' pwhile[j < trade-record-one-len]0 W0 m: C) g8 z
[! V0 [2 d+ F3 W. _5 D* v
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5 {/ f/ W6 k! H" h- ^: I6 Z6 Z
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)
: S5 Q9 K( E/ h# G) \- }set j( B( _7 r; Q4 n: R+ Q
( j + 1)

% [  J! `! B/ s8 I3 n8 ?]" D) o- L- C+ [; l3 e" f0 M
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 ))
, ^% t$ t7 a) i8 f" F* H, U$ Z3 O. I0 R. @. t
: q) F- V5 s5 ^8 a3 a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): B% c, A/ y1 [; a( S
;;
及时更新il的评价质量的评价+ K+ L$ |3 v1 V7 J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" Q+ V" K7 K" H  h$ T
set l (l + 1)
& @" }8 P; r: [3 v]
* D0 S: d8 F; M3 C: N6 ^3 h/ a; fend. t% r7 ^) ?( ~' B

; B( U# r* Y7 J3 I' X& }1 j$ Mto update-credibility-list. R* _  g: g$ d
let i 0" j0 F% t! h$ {6 J" R; X
while[i < people]$ G, a+ n1 r% b% G% o! f
[  |& ?' D1 {$ q* }  q% Z
let j 0; }/ y/ B$ h0 ]: x* H
let note 0) G$ ?7 e, M' [# q/ p: W6 }
let k 0
9 m! A0 r$ c% h1 _9 t$ y1 \3 J;;
计作出过评价的邻居节点的数目
& j4 D' c" U6 I) n1 u3 \4 Jwhile[j < people]
+ j7 b# }' X: Q9 K& f5 v7 N[% h9 e0 N1 V8 s; ]6 C5 l
if (item j( [credibility] of turtle (i + 1)) != -1)
/ t* V5 b# y6 O# n7 n& E3 p;;
判断是否给本turtle的评价质量做出过评价的节点6 t4 P3 C& e0 |- y# n* x2 t& }
[set note (note + item j ([credibility]of turtle (i + 1)))% A# w: q1 |' m5 T
;;*(exp (-(people - 2)))/(people - 2))]

# d+ J0 {; [' t: _5 L$ ?7 ^set k (k + 1)
7 C' h+ p- x( i" U4 X]
. q( r! G. E8 @; F+ K+ }1 C) N- }set j (j + 1)3 Q6 E: t: {) _' V* q
]- P' a5 F& j  D  @
set note (note *(exp (- (1 / k)))/ k)3 v- |/ H7 ?; F  F# i
set credibility-list (replace-item i credibility-list note)
6 J6 W( M4 W4 H3 I6 G# Lset i (i + 1)( ?4 p& ?  e: a5 B! ]/ j, B
]9 ~! d/ R6 K$ ~
end' R% v" n( e7 X+ p- [; F) u0 Q. `3 P
- p2 M/ b- z7 W
to update-global-reputation-list
: e5 s, K: \' X3 x' S0 @9 n; }let j 0
$ n' t3 S( n7 N4 Fwhile[j < people]
) {% t( p4 x5 I  a0 P/ L& m[6 o& p9 f) K) Z: Q7 G6 P3 D7 X( E( c
let new 0
! j- w2 c* _& A  D/ w;;
暂存新的一个全局声誉
5 l; s, y& m/ P* Z& f9 Wlet i 07 l$ l9 ^* \0 T# H( ]) J
let sum-money 0
( b- A# w# n1 c7 m0 slet credibility-money 0
! P3 G; w2 s. S, R( M; s- {0 h6 Ewhile [i < people]
1 N4 ^' D( `* G$ L) M[: L0 z. G+ ?1 h. t" @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# I6 g; K, {0 c' F& Y1 ]% ~# a
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' `# Q7 v: ?+ Z) |1 m' Y' Q" Tset i (i + 1)
( C' J  _0 f1 \' O! C* v: `]
  _4 f! L' c# b( K% ?let k 0
1 E; k9 Q. o3 U0 Q9 ]* {let new1 0; k7 z- t/ C7 @8 q) B
while [k < people]
: M! a( L6 J$ d1 s9 V/ U[
2 U1 ^1 w7 R5 \+ G  M. Eset 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)
  ]3 w2 I5 N$ ~# ^1 C8 d+ Qset k (k + 1)- r9 H5 i. p. Z
]
& c( r, v8 U7 W# f+ mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. S6 A6 h0 h" E  H, A6 Hset global-reputation-list (replace-item j global-reputation-list new)+ g5 t/ g5 a3 p8 h: \1 z7 ^
set j (j + 1)
/ m- y" t: P# E  k; m. B( p]
: m5 |# R* z. d$ I! Bend* F4 t( M! M; a: e
5 R. V1 m, q- \4 n# ?, t% o# T

( V2 r) Q* G' I% V" s. ]. D+ R
  E3 r$ R' u9 Cto get-color" U9 A, o& x( l# ~

% P# {: X! u  P2 z( aset color blue
. R& t/ _1 P& i5 ~
end' u/ A" s: E) u/ E8 p

6 V* e- {: {, k7 |to poll-class8 o4 G- _* D  I7 L; u
end
9 m5 h5 A8 C9 v& k, G  `- _0 q5 J/ s) O; l/ L- w
to setup-plot1: ~0 ~9 I! C2 a
; Q6 S7 Y$ X4 U, A5 K
set-current-plot "Trends-of-Local-reputation"
2 `/ w% V9 m' i

8 K& S5 b, ]! {1 Z$ N& Lset-plot-x-range 0 xmax

6 t( g6 j7 W+ G$ K/ i) s1 C. Z9 U" }  b
set-plot-y-range 0.0 ymax

1 R. G# }) S, M& Y, g8 lend, n" ~( g/ P/ t3 v4 a3 v  U

" Q& R7 ]5 @; o* D7 L4 d: nto setup-plot2. L8 n8 [: b/ s9 u

9 e' M7 M/ {( D* Q  u. i  H; [set-current-plot "Trends-of-global-reputation"
/ N; H  n5 O* e) A. }: y8 i: E

3 d4 p9 W5 Q) U# Y0 L7 e; X6 Hset-plot-x-range 0 xmax

- |9 r! M' \/ Z; }* l& d$ N: w; @- ]5 L. C( w3 |  e+ Q9 b( j( q) a* R+ U
set-plot-y-range 0.0 ymax

$ @% S, }, }$ i& iend* l3 s1 ^! P( h* z
6 k3 N8 j8 C  C* h. K; [
to setup-plot3
) A) y4 D5 K8 e) ]6 D/ Y" s8 z+ {" S# B) D- a9 ^% {
set-current-plot "Trends-of-credibility"
. j) M. l1 }  n8 C0 |
. {/ D6 B' K3 p) V' X* P
set-plot-x-range 0 xmax
8 _$ N) z- f0 F4 d
+ X- @# n: r( v6 ?& L! g
set-plot-y-range 0.0 ymax
: h3 y( f% n$ P
end
8 e4 r: y6 O0 c' a3 R; z9 H9 o0 P  @; e" ^* L
to do-plots0 n; _0 o) j' ~% y( `# Q' M
set-current-plot "Trends-of-Local-reputation"
3 R6 C6 F- Z2 u7 {6 Mset-current-plot-pen "Honest service"* T( ~2 Q; x/ u* [% t$ T
end
0 A( r5 g3 F! |! F
" L# g& f* @) N" D' W: [[ 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.8 I! p( ?' n" g0 {5 v
$ t9 P: C8 @5 r7 O+ Z) X( s% C
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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