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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 x; H3 G3 e% q
to do-business 7 U3 V: J2 A5 z
rt random 360% q" k+ ?5 a7 F3 A  g6 h
fd 1
, b- w$ d' |' s ifelse(other turtles-here != nobody)[+ o$ |  k# u7 A' P4 L! x. f1 t
   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.
1 [  t6 c& k: t3 A3 o6 E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( w( H6 t" b3 k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ @1 A9 N4 K! G% a" I' ^
   set [trade-record-one-len] of self length [trade-record-one] of self
* H2 q- z6 n6 u$ a  b* U   set trade-record-current( list (timer) (random money-upper-limit))
8 z4 a- I8 V+ n, ^2 a* z. c, L  b3 C  [5 v* N* D5 F( W9 h
问题的提示如下:
: S# n5 b6 P, r" `' M7 {/ ?' ^+ B6 M
% e4 t4 ?. Z) O1 ]2 M6 P; `error while turtle 50 running OF in procedure DO-BUSINESS; |; w2 q1 Q, |; V
  called by procedure GO6 E" g4 ~5 q0 }* x4 O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 w$ W" n# y3 U, W/ K
(halted running of go)
" m; z6 x% z/ p0 E4 f/ D5 t( C- R. h% E7 |
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~~+ ~, }; f6 b$ F- Y
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7 O) c/ M' E1 q0 c- C# e
globals[7 P, x7 l+ D$ E2 x2 T7 ^9 w
xmax7 P, x; ^, l: E3 a
ymax; }6 j. j% F) H) ^# ]* H  J8 S3 E
global-reputation-list1 F; [. K/ J$ @- ]  _/ X, p
0 G) d7 }" p! c4 w0 |7 }
;;
每一个turtle的全局声誉都存在此LIST
+ k& |) r1 [, b5 O/ F$ _credibility-list
$ j; D) _) Y% v4 K;;
每一个turtle的评价可信度- S1 V9 K2 ^) J5 y4 i$ a0 d5 U* f
honest-service
& B( w! D% y" k5 cunhonest-service& K2 X# D3 W# T, m" m7 F& j4 o4 t( D
oscillation8 k! S! X- d/ K. g1 `
rand-dynamic
* j/ e- P- e  T( I, e]4 P; Y0 ~/ D  i2 ~3 E: n$ e8 S- [

6 Q* r: S4 N" Z) p8 q* eturtles-own[2 r0 b0 G  M! I8 M3 `4 e
trade-record-all
6 H' v: A) `3 ~* Q, y7 l& B;;a list of lists,
trade-record-one组成
; _0 Z) _9 ?/ m1 N; F0 R7 a, `trade-record-one7 F' ~0 l/ |3 M' U  |8 @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 G2 v: u2 e  b) [+ O  C8 l. w$ d
;;[
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]]5 y8 J3 r. e0 h
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]
- ?) a: t- |3 n/ L' y4 qcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list9 d. c% L6 \  ?  m7 K
neighbor-total) f! ?7 }; S# N! _" }
;;
记录该turtle的邻居节点的数目$ z" X3 _0 D& b2 J7 y, r# D
trade-time
0 o* H" z2 J, y. a/ ];;
当前发生交易的turtle的交易时间
# t5 l5 g9 n( E& H4 jappraise-give% p3 L; ?& e5 l( U: l4 m
;;
当前发生交易时给出的评价3 P, j% f' F0 [
appraise-receive/ |8 E  a& z1 H& @, j1 o
;;
当前发生交易时收到的评价+ s: j- B! d5 ^9 Z9 b: _8 l/ s
appraise-time
( j( B. T2 O; A0 W8 ]+ [; Z;;
当前发生交易时的评价时间. c, D  U7 J" n. W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 ?7 b+ F0 B, R
trade-times-total
% ?+ C% G* D1 ?! u2 i;;
与当前turtle的交易总次数
' Z/ J2 Y/ Y6 q6 v0 ntrade-money-total3 L2 k. T" z) v& U; j4 B6 ~/ b
;;
与当前turtle的交易总金额4 |8 i0 l" b+ {
local-reputation6 [( P  f, ^7 F- N! l& q
global-reputation; f8 U# ~! v  A
credibility  o3 @2 D8 y1 ~5 n; z$ S8 m
;;
评价可信度,每次交易后都需要更新* J9 Q1 n5 v. u* r) X6 G7 E
credibility-all/ Q# W% M: \' p9 l9 v# z
;;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3 e% R6 z9 G% d# W  m% ]/ A
8 b& N3 W. C( y" \4 [2 q4 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* y' x6 l+ Q5 P* G+ x, x
credibility-one
) s5 I$ i# I2 G;;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
# S5 o( }* h1 N* \* j' V8 Oglobal-proportion+ z- }6 S+ j4 y3 a( D: f8 R
customer3 t0 `/ I" g8 Y# W* B9 O' `2 `
customer-no* k' I8 L8 a% Q% n* O0 C& u
trust-ok
0 j# T: K& V- w8 l! A# C# htrade-record-one-len;;trade-record-one的长度
2 D; w! g8 Q4 u4 u]$ B9 ?! P6 O; X* E4 O5 [
; w0 L3 o* e: B7 g" d- V
;;setup procedure9 N5 M$ L2 D1 R8 Q, `3 L0 ~- v
4 `) T8 _8 n0 X! ?9 E
to setup
, Q0 _1 P% K. p5 e" D) \( N
' |/ Q1 V, D, a" j: m% S  aca
2 h6 C+ J$ D3 t) n' u- l# a3 `

8 r, B* F8 R8 D3 Sinitialize-settings

6 M! _; I" }9 r  Z9 j
. |3 J) L, \' _4 ucrt people [setup-turtles]
! ~' ?% w* T4 J2 N- ^0 Z

+ ?: K4 }0 X# \reset-timer

4 z* w. R- N8 C1 s, j
% w$ k$ r; R6 Q& _3 S' `& Cpoll-class

( Q, V7 W) V! k7 I! V. r7 w% E/ A8 V/ w0 K3 }& c5 A8 y
setup-plots

' ?. U( J7 H! Z/ s; C+ M
; J) D! S4 ], v$ u- J# @do-plots

. s' ~; U: X, Z9 f" L1 eend! [) d& k/ x8 g) G
! F5 r4 s0 t& J
to initialize-settings
5 Y9 K  i9 s' ^- L! i% a3 Q8 r5 e! s
set global-reputation-list []
0 g# Q# P) t( @6 I
5 _$ ]! Q; e# P
set credibility-list n-values people [0.5]

* w. A$ s8 s0 H5 e* c  a, u3 p2 m# W8 a3 U
set honest-service 0

& M7 C. N' L- l. |8 H  V3 P9 q" F! Q% Z7 h
set unhonest-service 0
: g( f6 P" o) Y7 _* K
0 v# @( s# i4 b3 d3 n7 c% E
set oscillation 0
" v+ b! j+ g+ m  k! Z/ z

: D& ~- W- \! n& E) Sset rand-dynamic 0

, P1 r) B1 R% pend9 [4 z7 O8 ^: G

' m: u! s: X8 Q! n  c( nto setup-turtles + K! X1 @/ p( `+ \, D8 ~1 x4 P
set shape "person"8 L) e0 M5 u6 K, f
setxy random-xcor random-ycor
) K0 z8 }& q5 T' ]$ oset trade-record-one []# j  m  [3 [1 b1 l, ?/ m% W
( b: @7 Q+ A) B( a/ p* ?  `6 Q' _2 c$ _2 z
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 G7 J& F0 r, P/ [
  u2 @* g9 }" O0 \( P6 ?; y- V
set trade-record-current []
$ b  R! E% W3 e9 ?) uset credibility-receive []
! ~; K+ d# M3 T8 H6 Nset local-reputation 0.52 D$ `3 O8 q( _3 w
set neighbor-total 0
0 e3 n& }4 ?7 }0 Y5 L1 J) Zset trade-times-total 0  a7 S" z/ S8 J/ {+ B# n) x
set trade-money-total 0
3 `; g3 N6 }5 F' q3 vset customer nobody% Z) I/ i( S* j6 H, t
set credibility-all n-values people [creat-credibility]
& j: e" Z& i1 R; Z" jset credibility n-values people [-1]( m/ S% w, N2 B9 H! [; I
get-color# ?) |/ @2 o2 f0 @5 t$ X2 R4 c; y: @0 o5 D
+ K; A; e. Q, A1 A2 l0 G, ~0 A
end
, r& e: q5 P  r* t. D( @
* O4 _; C* N6 Wto-report creat-credibility
, V3 x. Y4 D, `report n-values people [0.5]5 o/ L, h4 n+ e* n, J2 n& k5 y
end
9 j2 T0 \* ^0 \$ @0 L. K, M4 \4 L
to setup-plots
0 d" ^' S  p8 S! G4 l) N7 f/ m7 V. k( _8 \
set xmax 30
1 I  |: E0 n9 ~1 G& F2 _
2 Q6 L. D/ J1 q+ T" n8 ^
set ymax 1.0

& C% f0 h& n4 P8 {* R  v: @* i. w
clear-all-plots

; J& z5 P1 c- z# g: ^3 U% {0 F+ w4 T5 N: L( w9 W. p
setup-plot1

7 k& y5 Z7 }7 {& F6 x. Q
9 {4 P7 N" \7 X" |( fsetup-plot2
* F: K1 v' [* p; ?2 X4 X1 U

5 `6 N" O( X" B# ]+ a: ]/ B; qsetup-plot3

& W7 U' N; s$ X4 |! dend. O4 A4 c0 ^$ W6 q$ k  u

* k- Q6 c( W7 h9 B. I;;run time procedures
  K+ D6 J# ~. z5 }: E* P! c6 h$ `& w
( {4 \1 @* w  T1 Sto go
, w; W1 ^6 ~% k. U. S% ^9 n; J. P2 B; q' {
ask turtles [do-business]
! ]6 ~7 A' m: p: \9 Y- _
end
7 l* x3 l- A8 q) R" O! S4 A$ i2 l. ?+ X$ g, v
to do-business - m8 \+ X0 N. D, ^" \; c" L
' ]* ~) t+ F" W( C6 g8 u
- d2 y4 f) O, f3 O
rt random 360
) y  k' l$ v6 I
# y! I  d) Y, ]& _! ~* \. D
fd 1

: f& u6 P# K0 [/ ]
6 A7 L5 e5 w8 @8 u/ _; j9 _- kifelse(other turtles-here != nobody)[
0 z+ I. {6 S* g+ ]- y0 J

. s$ F+ [9 o; M/ _set customer one-of other turtles-here

, u, k: s+ z% r( p" H+ w4 H- I4 _! e6 M' r% S7 Z; M
;; set [customer] of customer myself

* Q3 m. i" @9 G" X4 P9 R, Q+ U  [6 o0 M9 d
set [trade-record-one] of self item (([who] of customer) - 1)  ^8 c, L; {4 V
[trade-record-all]of self  `  K4 @4 F( i$ ^- H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ Q/ N0 s; l5 B( U2 E& Y8 M$ f1 z
set [trade-record-one] of customer item (([who] of self) - 1)
. G- k! @1 X0 C5 u+ M" @: n0 ]) a( O[trade-record-all]of customer

1 }1 Q' m3 O. K( Q- l" ]3 Q* Y! `! n6 Z1 E4 `7 \. c0 V' r' X* ~1 j
set [trade-record-one-len] of self length [trade-record-one] of self

# |: ^" `9 v3 Y. z1 ~9 r0 s% R, J, g: W6 ?1 q; j) y
set trade-record-current( list (timer) (random money-upper-limit))

" W$ w! G! Y5 I
$ ~2 t* _7 n: n8 ^+ R& gask self [do-trust]; g6 ?4 G7 ]- o# B8 Y1 I3 o
;;
先求ij的信任度. S2 Y) C. q: n3 g+ s* U

6 W8 T" V* W9 W' ]3 G; n9 q" wif ([trust-ok] of self)
/ Y1 |0 O; Z4 o/ _9 p+ f;;
根据ij的信任度来决定是否与j进行交易[! H( p- y$ P) ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 G4 x- t" L9 n

! S; g7 l) W" d. J7 i8 h- `[
  ?2 g  r" a' G5 p. }: z0 v$ T
' B  O" O! C1 T  U3 j
do-trade

5 v8 L/ G$ ?9 X9 q6 N
6 P, h( B  q7 @) r0 p1 {update-credibility-ijl
0 O. B' ~) e& [* o  x
; C; }9 ~8 y$ z+ U; L( k
update-credibility-list
9 Y! y7 `2 o) n/ b  \6 t

# a( d" x4 B$ C$ z- n, a* D
' q7 S5 K2 H. c" ~& Bupdate-global-reputation-list
: l# M, v# Y6 H5 U. o

! V* @. z$ _8 k; p( {' Epoll-class

% D7 W7 G8 q. ^% G' U: C+ [: R7 g. v" i; u: M+ W1 @* k; U
get-color
- S6 m- V% x2 T% T
' C' e8 b7 Q6 M6 E( T! f2 u& W; q
]]: @6 H8 R( d& I
( [  k! ~- l0 l/ Y
;;
如果所得的信任度满足条件,则进行交易
9 Y5 q" a5 H5 ]9 S. a% t! V1 x
9 k7 A5 ?5 v& L- @" T[
' X) M& @3 r9 `$ x7 y! n

: s; A& N% x& }3 f+ d+ grt random 360

! @# N: M5 b% N& @/ O. O' V: s7 R9 z4 L
fd 1

! m1 |& d; i5 B+ R8 l2 H* k/ n, e4 {% t4 Y
]

' N. I( r7 b0 G6 {4 O; p
7 a! _/ v2 b& tend
2 N" w7 N' G  W1 A
4 h7 m+ K/ @- G/ T) w
to do-trust
* b/ T' O) z4 i2 u; Jset trust-ok False5 k* E. |7 S0 l! C5 K0 j# I
; @+ n0 c# A4 Q/ [

+ C  d( B' p- Y4 `2 clet max-trade-times 0/ j" r: @& ]. ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* o; w4 \) a, d8 d, Dlet max-trade-money 0
# }. }& J# s6 V4 Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' x( k3 M3 E: E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 M( o; u( m! p9 `) q
6 ?3 L% o+ l6 c6 J" A

3 R3 c* L3 _2 N0 zget-global-proportion5 v  C9 {2 K% }: H  N" r  W$ O5 A
let trust-value1 P! g5 {- X  r5 L
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)

- z$ B- o! @& o4 ~% L& Nif(trust-value > trade-trust-value)
1 y: T' g) L# U0 G6 q( N[set trust-ok true]  R7 s& K- |9 c5 I5 a* c& Z
end" f3 g/ r4 `; L' v0 G$ c# R! [. r9 T
; P2 W) b" F9 ~8 N+ H2 p0 D0 w
to get-global-proportion
. r8 e- L( S0 F9 Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ B" d8 M7 \8 f+ S: q3 D# ^
[set global-proportion 0]6 M) H& `# a+ B& @
[let i 06 H; `2 S, S/ _
let sum-money 0
  _' r4 q5 P# U7 c/ k# v* R1 p5 t, awhile[ i < people]
7 ?- d  V  k: a% ~' C2 F[
6 q2 |& z+ z2 E0 N* m; _if( length (item i% R7 |# a- J/ @
[trade-record-all] of customer) > 3 )

/ o& v7 M1 q$ ?, p[% N  d2 p9 `2 [9 d4 R* u8 [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& m* x; W  u; C. n" C$ H
]* K! p/ E. L5 O; ~2 r7 e
]
8 J" d3 f1 @) E6 _. u: ~let j 0' q) g7 O+ O2 m% P+ P1 ^: [' B
let note 0
% H; C( N- _& f$ g2 lwhile[ j < people]
) |4 M1 ~/ E! S( @* r[
  |/ J  Y7 J) q7 M6 aif( length (item i
, `0 A  R& x' s5 q8 i$ g5 ~: w# l[trade-record-all] of customer) > 3 )
. P- U  N1 [  b$ ~
[4 H+ u+ u9 M5 M& S9 E) l; p2 }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 u4 T' p* c- p( C1 Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: ]) ~$ S/ A5 b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- a: f: B( N2 {3 p
]
: a* m; v- _' C5 h; k* c6 B]
/ B, D7 Q3 T6 H$ u; ~/ x3 [9 ]set global-proportion note
* H/ J& E% m9 G% z]$ h/ c$ j* R+ x# p7 d
end
% m. Q9 @% u! ]5 q9 |6 g% U$ U3 l) U3 Q$ @' F8 K/ Q
to do-trade% y: F$ ?" L9 }6 {# }+ \; _; x
;;
这个过程实际上是给双方作出评价的过程* X* z$ p4 W/ @/ z6 ^: m. S% u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 R$ H5 c+ X  M* T; h; fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( g  U4 W3 J1 H0 qset trade-record-current lput(timer) trade-record-current
7 S' U9 F3 d0 G5 N' x  o;;
评价时间
+ l0 L& ^4 F5 _9 w$ c* P$ r, Kask myself [9 x1 l% {# j. x. j/ |$ d% {  U
update-local-reputation1 f; ~8 }  q  ]1 V# `
set trade-record-current lput([local-reputation] of myself) trade-record-current9 i  `, D& ~9 [( |- v( q/ c& V  p
]
  O. i  V8 L7 D+ ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' B* J( b9 y- d( \: a
;;
将此次交易的记录加入到trade-record-one6 w6 W; C# p6 ?+ v+ ~9 ^: H5 e* E/ o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) Q0 Z  z+ G3 m+ J0 T" L5 Alet note (item 2 trade-record-current )
2 X4 W0 S! D0 S4 x+ Uset trade-record-current
( D/ g) b4 Y; b5 x# F, t4 ?! J(replace-item 2 trade-record-current (item 3 trade-record-current))

+ C7 {2 w/ P6 ]9 d' }, O/ vset trade-record-current
  _2 j' {6 V# V5 q( |5 F" X; S(replace-item 3 trade-record-current note)4 V- Z6 M$ g. w3 i2 t) x% S

; ]- X# h; [; m+ D" G) ~2 }0 w
0 t& n/ I9 E' Q
ask customer [
+ i# n0 ]0 U* s8 Y' _8 Q! n, xupdate-local-reputation
$ x( k% J2 K& ^set trade-record-current
8 K! d8 A& g2 V" C4 N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  S4 m, |$ Z$ W1 R. G% O8 G8 k6 O]
+ _$ h" G% O! I7 @( I8 P0 v6 V* y2 {+ a

6 S) |* r* P% d$ l9 b; K8 Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* @9 V" [+ X: p2 P! B' h" K% G! k
! F4 j4 Z' Q' b& @
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  x/ z0 _5 S0 `8 x2 H2 [
;;
将此次交易的记录加入到customertrade-record-all" |& }$ u* H9 r/ d0 C
end/ R: j4 w. g5 v7 B% X

; l1 C, J! q+ ^1 w, bto update-local-reputation
( L7 W: i" J( N" uset [trade-record-one-len] of myself length [trade-record-one] of myself% C7 q+ `, `: ?

# ^; G* D  y% J4 e5 t9 M' {' k  D, B0 \% I. N1 j3 w. A% d$ Q) u
;;if [trade-record-one-len] of myself > 3
) J" I* [( ]2 @7 F* t8 }
update-neighbor-total: S; \1 D5 r( u0 O  w/ b. k) q
;;
更新邻居节点的数目,在此进行* L8 r% S% x7 i+ l7 T3 z
let i 3& m; B) N# q+ _  q/ q1 D3 _3 {' ?
let sum-time 0" Q6 g6 O: W$ v, d: i
while[i < [trade-record-one-len] of myself]
& x/ R  G% T$ N[
8 [$ z: S  c% }- b4 [# i8 C& k7 rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 E" k: r9 M# qset i
) s  d' @+ h( e2 r( i + 1)
. j1 E5 C6 ~+ N9 s5 \
]6 T- u  @* M5 X3 R
let j 3+ s3 m# K" x3 M8 B# n% k6 L, q# g
let sum-money 0
; b5 S& T5 u# c* uwhile[j < [trade-record-one-len] of myself]: {* L  U) R8 G* ?; v+ X2 R
[
$ G. n) Q" m) \) T/ 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)" W4 ~" N7 n1 D  ]" L% s& c# n
set j
  ?7 k6 W7 c7 }( j + 1)
7 I6 r9 E/ c' a
]
3 ^3 Y3 k' Q3 C' Y( B" Xlet k 3: u2 d6 M8 D. Y( Y: Q0 P8 k
let power 0
: r+ j3 ?& F+ mlet local 0
( g, k/ h/ s% i' B/ J* lwhile [k <[trade-record-one-len] of myself]
' f9 L/ z& u; }9 `3 ^[
/ ?& t& z+ I8 }# x( 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) 1 _0 Q+ e+ V# w0 j1 y
set k (k + 1)" a. T9 Z! G2 I
]
7 s7 i( B) F; [$ l( ^set [local-reputation] of myself (local)
4 K  x/ d) {3 B- |1 G: g8 V6 Uend
& D, R9 u. t" a( a* Z6 K) A; k5 U' \; w4 K  w
to update-neighbor-total
' G/ b- I) R$ ^4 J* f' s  \4 `2 }. A* b4 d) k9 i% }' P# e: J6 d5 b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ R8 ?) l7 ^9 z8 T9 P% N+ p/ `& |' v( F, a( ]% z
5 I0 t* \! z' K8 L" @
end
1 W2 G! f4 U$ [0 A1 ~5 [8 `3 c9 {/ h" `
to update-credibility-ijl
: O# j( `7 }- V& {
3 b1 N) I9 S" W2 j;;
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。6 A4 H" h8 E( ]7 q
let l 0% ~  e# N) y, A/ R) V! q- y% R  Y
while[ l < people ]
" T# ?# a, |7 s6 u;;
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
9 P- r, t" M- V" L- h+ N6 X[; l9 `" ^! r1 Q9 N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): r' O: ]6 b+ I+ u9 S; |3 r, N% J. S
if (trade-record-one-j-l-len > 3)
, o4 ?+ F) K; f% }& c% i: ?) J[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& ?  g/ |' y; B1 E% W
let i 30 l: [1 \/ S9 k4 Y  `
let sum-time 09 S0 ?2 P" [6 N
while[i < trade-record-one-len]' i5 l# }* ^" s+ }3 [4 Z
[
/ q; j3 y+ q: e5 G# Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 P- E# J, S$ D% Z3 x# K
set i/ X6 l+ l. j) b$ R4 a
( i + 1)

* I$ \0 a& K6 l9 x& t( ^]4 q) h! U% l; d# f9 X8 |6 {4 x; z6 u4 Q
let credibility-i-j-l 0% ]# Q7 W0 \; O* {$ ?. n5 Z9 Y
;;i
评价(jjl的评价)* \7 m  j8 j% |8 X
let j 3
: B. B* g3 H8 o+ q7 t9 M' Clet k 4
7 z( k5 t$ o' M$ y2 X0 Q- r! ^while[j < trade-record-one-len]
" u9 y9 _! c8 D[
. t9 P$ i: p0 Owhile [((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 y: M1 B' b7 H) G# s. Eset 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)
4 @; j# T5 y/ w8 \3 Vset j+ f+ w( ~+ `% D4 Y. o( z9 ^
( j + 1)
1 |( q3 V( C- K+ g2 _( g
]
* t; ?6 W: j- b3 {$ Rset [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 ))" {$ M* V. |: X$ l) y
1 g# S0 k, _4 v. B8 \/ W

+ S0 v( M' ~: g, g+ n8 ?+ Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 M9 Z- I% p" c
;;
及时更新il的评价质量的评价
. T: g, \) k# o, F6 S3 Y; Zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" k( `% b( u; l# xset l (l + 1)5 H' j& n1 y$ y* m- Z
]
0 M8 B( Z0 ]2 M, \end
+ t1 v9 e: ^" }0 u8 \
# ^- G9 ^6 i9 U5 H2 Sto update-credibility-list4 G5 [* L8 W) @0 E
let i 06 s8 N8 |6 y% `5 S
while[i < people]! x  V- |1 L* x2 K1 Y/ S" X, f, G
[
# H' q2 M  |/ z- Zlet j 0- v( J0 Y) a1 S
let note 0
, s, Z' O0 e- f. d% _let k 0
( K) T, ^2 R# H: c# @;;
计作出过评价的邻居节点的数目; h8 c; ?& P0 b7 |0 u$ D+ E9 N
while[j < people]2 b8 x& a4 j# _( G
[
/ {2 F9 _1 j# z6 ^: G0 Jif (item j( [credibility] of turtle (i + 1)) != -1)$ E* F7 X* [* T# B* g5 _& @
;;
判断是否给本turtle的评价质量做出过评价的节点* u/ T+ I& a5 J3 _1 E; e
[set note (note + item j ([credibility]of turtle (i + 1)))/ J/ ~3 V, @0 b
;;*(exp (-(people - 2)))/(people - 2))]
0 c- _) \: F0 l0 K, O, @$ C' K
set k (k + 1)5 o. I7 R+ J% X( u2 I7 l, {
]
: h  e, U$ N; c8 L. hset j (j + 1)
5 u5 B; [! }: \! t6 F]6 D5 s5 b9 v( {- @+ M
set note (note *(exp (- (1 / k)))/ k)# b8 x/ n. k, a& U  A! b9 ]
set credibility-list (replace-item i credibility-list note)" n7 U9 Z5 N" j; K
set i (i + 1)
+ r( B9 e& D# X5 J0 L5 Q5 O, e5 m' o# W], k% E& l4 L) m5 A. t
end
' X& a. y+ Y! l  i6 |/ u! M5 ]% a; |- u" z* J( I4 c3 _: [0 r
to update-global-reputation-list
* I+ @) b1 P) H1 M. M6 f+ x( Ilet j 0' F4 @3 O& o# B! F4 \+ c% Q4 ~% q
while[j < people]3 M! O9 d. z& N; g! K  P  I
[
* l8 i* r$ B& I. s9 klet new 0" p8 s+ A. M! t( T( q: c
;;
暂存新的一个全局声誉* m0 f& \$ T/ R! f& ]7 X5 b
let i 0
, c6 f; E$ C. d* c7 C; ylet sum-money 01 ]6 F7 O1 y* a# j
let credibility-money 0) o; b! r& D0 z9 ?* ~; `" p
while [i < people]; J$ [7 c8 f1 Z" d: b6 @
[# s. o# N" f$ n7 n2 u3 `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# }- p; p- w9 c( [7 T: ^0 W$ D$ L& K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), X& }8 I6 j4 Q/ m. y
set i (i + 1), @" v; X; u4 n" ~8 r' \4 d
]2 }$ l9 _- U5 g: |6 t/ n* l
let k 0$ n% ^  \: i$ j
let new1 0+ J& P  v6 o& r" H
while [k < people]  v# g3 \$ w- B5 R! |6 T0 B
[' i8 S& J/ F# p! F; G
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)& L2 b+ t' `- ?8 |
set k (k + 1)
0 ^3 x$ y4 O4 _  i! l- e]
- Z+ o/ s2 d, `6 P& F2 ~set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 g/ v. s$ a/ I# M
set global-reputation-list (replace-item j global-reputation-list new)9 X% K6 h' K2 b. O+ h* n
set j (j + 1)
& A% V" i" l5 W. ?. Q! Q& K% P]. O2 E0 J9 Q+ C) F4 b
end/ ~1 ?& b6 i; l5 ?; W. K

( ?* R: I% q& c0 b! T- M
4 U2 F* x: Y, `# A$ A& e; {
- e/ }( A) ^! D( d0 ^to get-color
( D2 }8 A7 H* A0 b  p% X3 G! u( x3 W8 c. t3 E# i# |% D
set color blue

2 ?  Q' D2 ?0 n3 C  K7 Tend
- q/ w( T3 g9 V" d: s; i$ k  J
/ E5 ^9 r6 M' Mto poll-class, h* h) ?7 I) N' }6 S% r1 P
end
$ ~; D/ A( @2 A8 y
$ @2 H" f2 n3 kto setup-plot1
( X2 n# A0 a( r. ^& I& t, `" r
8 T6 D; G% W$ jset-current-plot "Trends-of-Local-reputation"

9 }+ A4 G9 h6 w' U% N
# i/ n1 Z8 J) r+ T: D! R  Uset-plot-x-range 0 xmax

. g& W. k: q' d; `% B7 p
+ {. {+ k6 m2 \* a4 fset-plot-y-range 0.0 ymax
  [! G+ l! l# X% p% y4 b( w
end
3 K+ L$ u2 Y3 b+ N* l& g# W" F2 ~& r) D# D
to setup-plot2
/ y4 n, _! b# U/ N' a3 G" P& W/ R7 T& M# V
set-current-plot "Trends-of-global-reputation"

- T; z, ?6 C1 D3 }3 x" B. J; p2 p( D) s; {" @1 J# `1 |- ~
set-plot-x-range 0 xmax
% T; t  f$ @/ l2 T8 G1 u' G+ v

2 H0 L- n" u8 V' S0 \8 W% ~set-plot-y-range 0.0 ymax
. Q) K0 o) U0 A
end
. q) Y5 D, q! ]" E' ?( m) n7 G; x5 l  e4 |. I$ S/ I/ w' a, N3 J5 d; K
to setup-plot3$ H. B2 P4 O2 d; q

1 l' O  c4 `9 }' u8 r7 Mset-current-plot "Trends-of-credibility"

# n2 B4 |" Y; `. n6 m
. @5 j4 Q( Y5 y4 i5 ~set-plot-x-range 0 xmax

! P+ D+ m+ a. W$ L- y" f$ z1 ?. h+ [9 o2 U  l
set-plot-y-range 0.0 ymax

+ h6 Z- b' f' Z6 `9 n7 z" Eend
" x5 l' a8 U% R5 Q$ p- W
( }0 l/ @  O4 p8 O1 m% N' Lto do-plots: N/ }/ L! N' i8 ]/ Q$ x; y- [& h
set-current-plot "Trends-of-Local-reputation"
1 w3 j- }& l! U& ^set-current-plot-pen "Honest service"4 C: _) l, r' o  r8 e' s6 W; c
end
& Q& H! t2 K5 H. K
. T5 q5 {3 z; ?  `+ S6 |% x+ ]# 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.
% n% Q, a1 E1 ~" W$ K/ D' F" n" @5 i8 F: x
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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