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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:& B+ m9 @4 E( e
to do-business   ?: p* m% P( I$ b
rt random 3602 z+ t. c. S  h4 g! g1 o8 c4 S
fd 1; O: C# L$ E/ N
ifelse(other turtles-here != nobody)[
6 d: ?0 r3 F  H' \( I+ l8 R; m   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.
6 s6 E& z2 _( M+ n/ e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 W- g  e" c( o# x4 V' B4 ^, |9 V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, L$ x% d1 v) |* y' u( h   set [trade-record-one-len] of self length [trade-record-one] of self
# _1 @2 u3 j' s0 k/ f% l   set trade-record-current( list (timer) (random money-upper-limit))4 R7 y9 H+ \2 I4 I& C* y+ s

% A& H" O' }; C4 @% Y" d. M( w- c问题的提示如下:
: e7 B6 C4 y& P; h, f+ R5 ?. O' x$ r; K8 ?5 `! j
error while turtle 50 running OF in procedure DO-BUSINESS
- g5 J, H8 N( Q5 L$ x  called by procedure GO9 x+ w( a. k7 x9 ?3 ^
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! V7 F: z2 ?: S- h# m
(halted running of go)9 Q; @9 m" X8 M3 I

* g( t- H8 D1 \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~~+ X/ H& i" E/ |7 d4 o
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 {" g' u* x# ]3 g
globals[
. e, j8 N+ O0 J! l. G" t# ^xmax
  a" M/ i! n" u; D# Y4 \0 H. s( iymax
" Y+ ^# Z% Y7 @! R8 m5 t' Y& p2 ]global-reputation-list. F: y" N# e& F( P

8 z. ]+ H0 V1 I/ q1 s8 Q' h: \;;
每一个turtle的全局声誉都存在此LIST
+ {) k% X* i6 Q3 _& R3 g8 ]  }0 D# Fcredibility-list3 h8 N# ?0 ]' T
;;
每一个turtle的评价可信度: }+ H* I9 E- ]- _. ~1 ~
honest-service# ]) q$ I$ G! T/ m/ S' e! t
unhonest-service
0 {& U6 I3 d8 G: V* w8 I6 n7 |0 goscillation
( Y! H" T( Y$ w9 hrand-dynamic
3 y* k8 g5 e; x  q. t& b( x5 X" p]
  A* E& E# |6 \: e$ q+ E& Z2 z& R6 |3 e6 A6 B" [
turtles-own[
1 _; b/ Z5 g8 ]: F2 r' W3 Ctrade-record-all
! `- \+ x8 _' k;;a list of lists,
trade-record-one组成
) W5 w  N$ ]9 M6 u3 atrade-record-one5 }8 q0 D' i) f
;;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: {) D8 @1 z9 m$ s4 T

9 p5 k' Y6 w) W2 p; l" W) C;;[
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 `5 \3 {) G2 L0 V) |+ ?- z
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]9 `5 I$ H3 F' [- M, g, u6 g
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
. x  H, A7 o5 g6 n1 H8 t- Bneighbor-total2 G" T% H# M; ?$ B
;;
记录该turtle的邻居节点的数目
, a5 E& E9 o( K, ^" Q# m# jtrade-time
/ j) S9 W& A! I( k3 _+ r;;
当前发生交易的turtle的交易时间
4 z1 [" b. e& h- P) D! i% u* oappraise-give
; D  g! v5 Q/ ]. Y;;
当前发生交易时给出的评价
9 @. h% Z- @9 Dappraise-receive
3 J5 Z+ O# H2 S# f; n;;
当前发生交易时收到的评价
& G6 [1 |1 m; W8 b) p) Xappraise-time
) M0 G' `& ]1 W4 w% u;;
当前发生交易时的评价时间
2 A3 {( w( J  h5 U+ [3 rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  S' w' W% N/ C' W3 |
trade-times-total
% J, S. o( l( K( Q  z* Q6 W;;
与当前turtle的交易总次数
" X2 @: A% J; C: Gtrade-money-total/ V7 X8 R3 {7 a9 t- A# Q, u! T6 ~. {
;;
与当前turtle的交易总金额
+ W: O7 V- v& M4 K  A& Llocal-reputation% _# l, g% U6 q7 X
global-reputation4 |" T: U  t! g5 y! U3 S
credibility; x6 F! {6 x7 W# I. B6 f5 R, t
;;
评价可信度,每次交易后都需要更新
& X  h2 X! `. k3 Ncredibility-all: j1 x, k) J+ p7 v4 A
;;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
: U0 \: k7 x* w' v( B1 f0 L, `
4 C/ e- [: V) L;;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
, K% P4 I, h' c0 ?- n  L0 e& ocredibility-one: N/ r! @3 g% Z( d4 Y/ [" F, `
;;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, ^- G$ J; I. o: b' q* V
global-proportion
" }( c' |' c7 F+ T5 a# qcustomer
& o* r2 X- R; Mcustomer-no% \; x- g4 ^. L# r
trust-ok
0 a7 U  Q9 Z% k- ytrade-record-one-len;;trade-record-one的长度
& D# b9 y" P* J8 o2 w7 u; l8 @2 s- f]% F% @2 h1 x' y
3 |! ~& h4 y' {! Z1 b: f
;;setup procedure
" ?& \3 N9 K/ v0 }+ ^! p' \8 m0 o7 Z' F! K. p5 j
to setup
# h9 c7 K0 v: Y" T) T3 e3 x; E0 Z4 t  W
ca

5 A3 o& q4 D% J! c/ D( a* m/ n: J, X& L' V- O
initialize-settings

. T5 s  u$ J4 T: N) {( K
$ T' F# x* s# ^. V( H! X' ~! A" mcrt people [setup-turtles]
' v  i7 R" f0 b( x

$ G% F- O# d8 v/ hreset-timer

. b6 Q8 v2 {& m: z4 W
( G/ G* W$ _+ V. ~poll-class

- k# s" o, T3 u! ~+ ~
( c, X$ H/ K9 E3 O2 msetup-plots

, \- C- l& d/ e( y/ I2 B  P: @9 V& O/ _& H* {
do-plots
& Z2 W1 y! w2 f, A
end
+ C0 P# q2 E3 x/ }. d! e
7 u$ D. j  \1 |/ Y3 yto initialize-settings8 l0 A  p0 L- m* M

8 j% o, r3 m+ E1 h& ~set global-reputation-list []

( X. E7 i2 n; A+ p
/ f1 n8 L% ^: m5 a( ^5 f. Vset credibility-list n-values people [0.5]
5 u& ]% e1 O$ |$ h/ c/ F1 ?
0 e1 N- H% @8 |8 Q
set honest-service 0

( G+ ~! N" D+ z. `
( y  ~& T! z4 lset unhonest-service 0

0 e' g. g- s( z* O0 h4 n
# T9 U. H" i% K- R5 h$ Nset oscillation 0
- [9 ^6 G5 L; c

  Y/ s( L; s8 x' [* Q5 Sset rand-dynamic 0

* P# ?% `* |6 G" P' T; b2 mend
. J( A, Z, i, `9 s5 ^2 r: ]( L
4 f6 j& x6 F0 U$ L+ g+ V1 \to setup-turtles - q6 ?& f) i' q" V
set shape "person"
4 O0 l" N7 ^0 q8 ]( Gsetxy random-xcor random-ycor$ {7 P! W" e  w& h; k
set trade-record-one []
6 [$ @) `6 r! h9 ?6 Q# q

" A; y: k$ x* ^! Kset trade-record-all n-values people [(list (? + 1) 0 0)] 6 B+ J6 X; t* f2 A8 Q2 h2 V
# n# H. h! b8 g0 z
set trade-record-current []
8 G; s8 j8 h" |3 g7 f0 s( fset credibility-receive []
/ W: x: S9 F2 K& L& xset local-reputation 0.5% M4 R6 u; T8 [( J
set neighbor-total 0& f* p# P* F5 E, Y3 B' L# j3 q
set trade-times-total 0
) ^8 I, q# j% g# f; M% {, h  d% t. Vset trade-money-total 0
* z  C& U# x0 Q: Jset customer nobody# Q) J' Z$ x4 N" L2 p) L) }0 A" r
set credibility-all n-values people [creat-credibility]
) n/ p% _) a6 ]6 p) Y, Rset credibility n-values people [-1]
# E) s- y* f4 B/ ?% Rget-color8 ?1 W. K! F6 f, k2 u* k

$ }9 t& O) L& s6 ~7 V! Send, e% e9 \+ n' U
( h8 {. w: B2 Z
to-report creat-credibility, Y! Y: l+ H3 ^# k! J+ p( y4 W
report n-values people [0.5]
! ?9 @/ T* I$ G, `/ |) B- Gend
+ r# K6 a3 F/ @8 U0 t" g! }+ f: g, O
to setup-plots
* S/ V+ K, R0 z; R1 s7 v/ }) Q) _5 ]6 {5 ~
set xmax 30
+ l0 V' H/ F3 h: U

  h# M/ E" L8 K5 r" f$ X+ gset ymax 1.0

% M6 R4 ^2 C4 v. q: \
$ z0 R, ~8 x5 Yclear-all-plots
& ^0 m, s. ?* Z4 M3 t
5 U' C& x/ C2 ~) I! r
setup-plot1
  ]  h1 \0 ^* a# C# ~( ^4 P

  N" `: {5 _. C7 Z) Fsetup-plot2
; c2 D/ c5 y0 u; ], j; @4 Z+ k" B3 B
% [: N, @; _  V% b1 t9 N/ r
setup-plot3
2 P% g  d! l& `! e* y
end
3 d$ p- u& Y% `( q2 Q+ v; H. L) ]6 y0 O; c- W
;;run time procedures4 x/ R" p" C! X% \

/ r* q9 v1 J( @* K% S1 ]1 z5 ]to go
1 t% g$ {$ B  b2 e  h- a- A0 r
& Q9 n* S5 I3 J8 g* zask turtles [do-business]
. v* ~5 h$ V8 S* }/ w3 l
end* K5 d; @* E4 `4 y  V

8 |4 t$ \$ m! jto do-business ( b2 x! l! q& A: Q6 Z

7 O' K) G/ R% B$ T( m; i+ o$ b" ~4 A+ V: @1 K+ l
rt random 360
: _/ k; D, }3 q( h
3 a* _  L+ V* m5 @/ @& W
fd 1
2 U& q' }( H/ v1 R1 B, [9 K2 F
, J  `- j( s3 t
ifelse(other turtles-here != nobody)[
+ x5 z2 k8 g8 ]$ U+ o7 m

. |: g2 S5 z4 I3 o, ]8 Oset customer one-of other turtles-here
9 N3 I" c" n- B0 l
8 T* k4 T6 W5 w; n$ i' Y2 U
;; set [customer] of customer myself

( _9 b( a' I0 q
2 t- K  C9 {2 g* [1 d* zset [trade-record-one] of self item (([who] of customer) - 1)
  B' Z$ g/ s1 o% `8 m[trade-record-all]of self3 N) b: N( Y9 A- X, e( a$ \- P" T' p% ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 n" ^7 M; w0 X( V' ?' b7 G( m/ F  \2 C: w% F+ ~
set [trade-record-one] of customer item (([who] of self) - 1)
  @" d" b# x" Z0 x[trade-record-all]of customer
! ]' _  T1 \: J6 o
" A& ]# s/ ^% q! O+ l* `0 u
set [trade-record-one-len] of self length [trade-record-one] of self

4 |% X7 K9 A% K' ]3 v- `$ c. ]6 }3 A* `/ Y1 n: A( `; \
set trade-record-current( list (timer) (random money-upper-limit))

$ e1 I7 K1 @" z; S& f6 i) u+ e
3 o8 C# f( l9 T8 fask self [do-trust]/ K( |, x8 o9 {# B0 m
;;
先求ij的信任度% Q5 z) r7 D2 i1 L" ~+ `4 R5 F
2 s1 s& C! [0 ^# o$ W
if ([trust-ok] of self)
6 `' z% K9 S1 F7 o;;
根据ij的信任度来决定是否与j进行交易[
$ W/ w3 D" H! Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# y8 e/ D: A7 w( @" S3 ^9 h$ J  |% M- m4 P+ C4 w
[

0 o: [8 g5 h3 o2 G( ~
( F+ C/ l3 f3 m6 p: f4 hdo-trade

: f5 x* m# u  V% x" m
" s. j) B: c2 N" fupdate-credibility-ijl
+ j# v4 [: v' f, b

/ N/ G/ W4 C# J; Aupdate-credibility-list
1 O8 z7 @: y# O* P9 G
6 I. ^8 t, s- Z
% m2 {3 I& O/ G3 |
update-global-reputation-list

. E& X/ @2 ~; T+ x3 m% N8 V
  ?0 [- {  K% }5 hpoll-class

" E/ U9 P% e3 K6 G
7 }; ]( b7 H: ^2 tget-color
( R" m; q# z8 s

' b8 R' J& B/ T  |+ R; m3 d2 @]]
$ P; X4 S, N& m1 ~
' g/ f$ p" l% f' P4 M$ L- K;;
如果所得的信任度满足条件,则进行交易$ V8 @4 v4 e' P) B4 }; w

5 W. f& t3 B3 M% G& f* l6 V3 h# y* c[
, t2 R1 \* j* b
# t5 a, x9 s, S- P
rt random 360
1 g  J8 Z% n4 E# z" x9 }% L

$ V3 s; k# t: \9 rfd 1
3 y7 }9 V2 H& a

) _) m$ E0 n" v  ]! o* []

3 n' j: z/ o) U& ?3 ^4 e' ]2 R* A  l. L9 k: e  G
end

( \+ B% G! J  ?& P6 w/ X: S2 I  p& C4 B8 G: k7 T
to do-trust
5 v, E( f4 I6 @, I8 O. F1 }* _# B9 gset trust-ok False
3 _& g9 I4 K  d- f2 J8 y6 w4 l
- e/ d( x8 i1 D8 n3 H5 z! b8 S

. i/ ?% y' i2 G" [1 {8 [let max-trade-times 0
) n. Z' P1 H; R7 H5 Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, O  V9 A7 r# P$ l6 g" }8 y* ?let max-trade-money 0
! X4 w; q+ s3 fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ j; A8 g$ ]/ B- _# Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) ~4 A% D8 D& `7 b
8 C7 P* r2 G4 f; k! Z% |' O/ B

% H" T- ?6 s6 u# L7 gget-global-proportion/ T5 b; u1 S( F4 g
let trust-value; Y) g1 v+ e4 ^& E& W
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)

! N. Z1 r; x0 V# [, yif(trust-value > trade-trust-value)
" C" ~2 B+ H9 V[set trust-ok true]
+ f* k2 d" s0 L5 ~+ g* v0 Z( g4 Mend7 N& K8 a# J* R  i9 Q

9 X; s% b" Z9 F0 }( {0 Bto get-global-proportion  u" t- k8 S, y0 j4 Q! N+ l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 e% P% y: s, J0 |3 C* o( h5 w[set global-proportion 0]
* z0 A! e5 U4 H3 r! g/ q1 R! d: w[let i 0
7 M9 T& V8 P1 q  l; rlet sum-money 0: [/ E" _1 R. J; A
while[ i < people]
  m8 F- Q# n" ]" R; P[
5 k1 X7 X$ P2 N$ Q; o" dif( length (item i$ S0 k( a" G( K) [& T# _& R3 D" Q- F
[trade-record-all] of customer) > 3 )

) ?) s" `2 K0 D+ O[! Z* v6 x) t( W, ]7 c% e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 x3 w5 k8 h/ M1 x4 w/ d
]  N$ p, C/ U1 ?* ~7 [4 m
]
' z! P2 k9 }! l, Ylet j 0% r8 @4 r  j; x- F( F& s: p& s' T
let note 0
6 Z4 g+ T9 p" G& T! Q5 N/ T. k, }" pwhile[ j < people]
# V0 w& U1 @8 `0 s* j/ {0 g[
9 Q3 m9 a3 f& d, ~% X$ a: `if( length (item i
7 `: j6 l0 W; U5 W. E: x[trade-record-all] of customer) > 3 )
6 N) K0 K. }9 ]* y4 f
[
- F( d2 U* f5 T( c# tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* c9 l& u* ~* p) ]; t; W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. ~* ?6 P% ?( m1 Q1 }( U" H+ X! C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' ]  v, G- U6 H9 A) i8 }* H
]2 H0 d# b$ g% K8 {) t) F+ g
]( y) H7 i* p9 W) ^* L: w
set global-proportion note+ O# n/ W+ D: b9 f- l
]
8 Y/ j8 u0 S: m  n; u/ D, z8 Eend3 I4 C3 f  x/ l- o. {

0 d# x7 ^) Z. Y. h' xto do-trade* }- }! F3 x/ W$ p# I2 |7 `
;;
这个过程实际上是给双方作出评价的过程
, g1 N+ F  K; R. A! uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% {2 w6 I# e' k: z' p; g9 Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( K% o2 w8 ~" h6 ~
set trade-record-current lput(timer) trade-record-current
& X2 B4 R- ^# B; D;;
评价时间
* ^% r) }, j% [3 a+ Wask myself [
* G8 z4 b7 ~! z& {, B- Gupdate-local-reputation, c; n' N9 S. C5 q8 Z1 }: w
set trade-record-current lput([local-reputation] of myself) trade-record-current& T+ U5 u  m% s$ u3 {& }) t
]5 R  K' O. M4 k) a9 n6 X% f
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" s: h- d* R) S
;;
将此次交易的记录加入到trade-record-one
9 Y. Y0 K+ I# q. uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 Z3 ~5 W! D4 n0 [" h) a. x( a4 ^
let note (item 2 trade-record-current )
: W+ i+ M8 b; T8 A  U. [0 c6 Gset trade-record-current
9 U) G$ R5 n0 ?" o7 x(replace-item 2 trade-record-current (item 3 trade-record-current))

- b* S* w/ F- `0 M" a; Tset trade-record-current& \; T! K3 L+ j8 I0 k: C
(replace-item 3 trade-record-current note)
1 L4 i& q" z& R7 w' c: |& F* a* G! _# e* Y! b8 Z# L

2 |$ C4 Y& o) z- K* k" ?; c6 Task customer [3 [- J' k: n' F; v9 c/ i7 E8 N
update-local-reputation
' L$ F0 ?) v: v- a% g( Fset trade-record-current
) N7 S  i# K! z& {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! E0 S% V9 W* F]
( I& ^" b6 {$ E, b
: g, m! ]% K  I9 v! S

& O3 o$ P" W+ M) t' {% Y7 e& pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! H' H# k+ w% D
0 z6 L4 s" J$ `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! X. ^" V7 |0 t' e1 ]
;;
将此次交易的记录加入到customertrade-record-all
) L. a. Z8 p6 A# ?end
4 {- X2 i. ~" S+ N9 Y9 \6 q
0 L: t/ o- L. S; O1 |: ^& fto update-local-reputation- V: h/ T# }8 s" K5 R
set [trade-record-one-len] of myself length [trade-record-one] of myself! \, M" A. ~0 f( f) G
2 ?" b3 t# l  W6 f9 I" E
) G2 B, U  f5 g! P$ j' T- `1 ]
;;if [trade-record-one-len] of myself > 3
* _% V/ g, V. _* H/ n8 {8 e+ w
update-neighbor-total
+ _6 F' E* ~8 K;;
更新邻居节点的数目,在此进行
! K6 w$ M3 @+ {! [* j( z3 U( Dlet i 3
& w% I7 B5 I6 p, f. Ulet sum-time 0
/ `: ?8 W4 A6 D6 a. G9 N# {while[i < [trade-record-one-len] of myself]; o1 s% P  _: Z4 ^- G5 o1 g
[
( g+ ^2 E: l- I/ `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' y" u0 t+ d$ Y+ A8 y4 R; s/ x! iset i& }$ ]1 X  ~4 k% x
( i + 1)
5 v: E7 G: ^  Q7 K" |: c
]
' x# V; t3 C% k$ i9 K% X9 Tlet j 38 T0 W! c6 ]# {2 Q- I4 o
let sum-money 0
. q: f! m# {, I+ t; k+ |while[j < [trade-record-one-len] of myself]  w& s1 c9 E2 n# t
[
3 |7 l& {; x, [+ G2 d' gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
% _- N+ i9 `% }. n1 G0 F( xset j
% G$ S3 L9 M6 o3 L; M5 i( j + 1)

. @" v. T% X; ^$ i% k1 K]2 R* f1 V; I4 m" M
let k 39 [! P8 j; J, P9 r! v* g
let power 0% Y& \0 }: m# {, d; t
let local 0
3 [7 W  Z$ S$ |% O! P6 D) fwhile [k <[trade-record-one-len] of myself]
/ M+ Q; U# Z" ]3 L+ F[( W' o( P+ E! J6 j
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) ) s, _. y+ A0 o' X9 e
set k (k + 1)
4 `+ W  Y7 ]: d$ R; n4 l& }2 ]]7 b' f4 J7 f, R1 M1 e
set [local-reputation] of myself (local)
4 v* [. e9 n/ i* R8 ~1 pend  A9 w2 z" x: D" J) l# k9 \- y
- n* o& }1 Z3 |
to update-neighbor-total
6 J" m- q6 a6 k: Y" j. |  f. F; _5 ]3 h3 H5 ^
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. T, v7 F" V$ P6 r
$ ~+ _) k9 q5 ?: X: E

* F9 R0 ^: J9 ^end" s& a; d# D; D6 b& H) W- i( O

; D6 t' Y& I  D. S: ?' m/ cto update-credibility-ijl
7 p4 i. w; J( a9 u" B( z7 M" D4 b' u( [2 i: T7 U% `" V
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。" t. x! F/ E# F" ]% m
let l 0' W/ x/ u* O% f( o0 E6 ?# \
while[ l < people ]
$ H; A2 N0 [$ E9 E! _;;
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
$ }. b$ c7 \( v5 v: d' ][
5 i6 W8 O+ @9 o8 m/ T0 mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 y! i$ U, x7 G( e$ u
if (trade-record-one-j-l-len > 3)1 P! N2 a# p% O) A' t6 `0 @
[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
/ K* d* j5 U) ]. Y/ `let i 3
* c* s1 O5 Y1 p9 W& R( B6 e( }9 Klet sum-time 08 S+ ?3 G% k* D8 p$ X- [9 R0 f
while[i < trade-record-one-len]: k" ~- b' p6 p. c
[4 C+ g& T) E$ R3 m4 \6 B  E( x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ k1 V, |( J& s/ ?1 a& x+ ^set i
5 g! q4 U" [- b+ X( i + 1)
0 P+ S* M) `8 z2 H( }
]9 _7 R; M, D, J5 M! f' b& C; R
let credibility-i-j-l 02 r  X; D6 K( Q- D- {; t3 o* Q
;;i
评价(jjl的评价)
8 e' \. X6 v% O2 R  R& I, xlet j 3( F$ Y3 Y  w5 K1 p/ B0 s  F
let k 4" l! y! L' }# h4 ?( V
while[j < trade-record-one-len]% b" F+ ]9 o3 u
[
, O0 t4 V. Q5 l9 O! [6 {( {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& z# j5 b( @: q& W% Y+ o6 l/ e
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)
8 Q6 C% C( c" G& b2 x! G7 }# w% yset j
$ B- _. z7 `1 T- R( j + 1)

1 m  Y& o# B1 ]# |]0 k$ \* ]2 R3 D, X/ y
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 ))) ?, u  k: S; t
6 O( O# w6 a+ t& T1 g5 H! w
1 ?- K1 s# `# X2 H+ I# b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 p; [! W0 v% d1 a
;;
及时更新il的评价质量的评价
  B1 e' Z) h, w+ P2 P6 s0 ~. Zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& r, a" ~1 R1 ?& ~+ p! h3 m
set l (l + 1)
) n/ m: n0 [2 Q/ G" F]
: R0 B5 ^' D9 send
: F# M( F* M2 j5 S9 L7 X0 ?. }8 a+ R( Q
to update-credibility-list
, q  F5 k8 P8 b+ [# Klet i 0
  H- b  z( C' G0 Bwhile[i < people]$ ?( D& r0 ]* u# U; u
[7 k6 e9 S5 L+ S0 ^$ N
let j 0
+ J5 q: j3 J" G8 Zlet note 01 m3 B, h7 g- N3 u" C, p/ G4 C
let k 0! _, k! {2 T6 {5 u# k
;;
计作出过评价的邻居节点的数目
. h) M# `: t. x: ^while[j < people]
- Z* F3 v2 k, Y9 J  z+ T% _4 L6 O[! {0 y. H" u; s
if (item j( [credibility] of turtle (i + 1)) != -1)& y! K$ \8 g4 S- G' d8 S8 t
;;
判断是否给本turtle的评价质量做出过评价的节点1 R) s# {( F+ g7 g1 C- F. }7 |
[set note (note + item j ([credibility]of turtle (i + 1)))7 g0 E7 A  A9 u2 @. I
;;*(exp (-(people - 2)))/(people - 2))]

% @0 ~- }8 j8 D' F9 n+ @set k (k + 1)9 K# F2 {7 K8 A% P
]3 E9 a0 t' M5 W- s" T- {8 D$ P
set j (j + 1)+ ?$ z  p! t! N0 T4 `7 v$ {! @5 n
]0 h" b% Y0 f. O
set note (note *(exp (- (1 / k)))/ k)- A2 K4 Q( N* M4 [, J! m! k
set credibility-list (replace-item i credibility-list note)
. _/ l, v. p- A  c8 b' l& gset i (i + 1)
& M( D, A# `3 j- j  `$ j; x]
- J% ?5 j; ^+ M& d* n3 a* {end5 |0 J, p. M5 c* U

. a. U7 F- G7 P' A* J$ j' |& W+ dto update-global-reputation-list
1 v2 g+ z. [5 N  m8 Alet j 0
7 a* X9 S2 d& C' r" L' g) [3 ~# }while[j < people]
: e$ ^" x7 i2 I$ _, r' v' ?; a5 b2 r7 C[: Q% M4 N/ S5 D0 m0 T0 t
let new 0! c6 r: k. p  i; ?
;;
暂存新的一个全局声誉
% `: Y7 ~, _* K7 x. plet i 0+ D# Q' D. i5 L6 A6 u
let sum-money 0/ R/ x% `& p' Z( {- k, V2 N/ A+ K
let credibility-money 0
+ N% F' L, F1 cwhile [i < people]
; |; [$ S7 [' b6 y1 O1 s- H( M[4 a0 ^3 x- E( d. t1 E) R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 u- d5 A7 F, w$ c4 l4 W7 u$ T( e, aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 E+ S) o5 m( e7 S$ Z$ k- j: d
set i (i + 1)
" ]9 R! [3 A+ h8 h; z) H]
7 g! c8 ^; S) Q1 plet k 0# d2 D# r/ Q3 F9 }
let new1 0
# V) c& y7 S0 t- l, ^% v! Ewhile [k < people]+ e0 L1 u) q: g
[& z# W1 |# u0 {) s
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)
, g/ t4 R" m0 b8 ^5 L) p+ `( q- kset k (k + 1)
# @7 A  H7 R; @]. P& _  ?- F7 r* s6 F/ c5 S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : s, ?( h* }3 t- B. ]
set global-reputation-list (replace-item j global-reputation-list new)% X# N* {, v* f* d$ [
set j (j + 1)
( E( G  c# ~& n  s! }( }# U/ i]$ A* {0 ~' r% y1 w7 m9 g% I8 P2 w8 {: i
end
- B- p# H' m! V0 `; C0 q
  C) d5 R% a! _2 H$ v. d% {) a/ h2 s/ k3 j$ {" T, z
( }3 r- u2 f6 {
to get-color3 T4 K# X" O& H

% W- q3 r( d1 Zset color blue
. g' k6 o# \/ [
end
# P+ ~9 \- W* C8 i2 ^% M+ W# O8 M) m8 f
to poll-class
# C" N) i3 U% ]+ S: lend  m: h6 F0 q/ S9 r) _& ^: _
/ ?: i1 l! |5 g% u. F4 p
to setup-plot1
/ C5 S( Z. ?. W% U1 A" ~  t, e
8 I9 q' n4 d3 E7 P+ R' Vset-current-plot "Trends-of-Local-reputation"

0 H  O( A3 i* ~0 c  [% b
+ T# u4 P" k' \2 J! ]set-plot-x-range 0 xmax

$ N' _: L. O( Y) D" a5 a/ E& J" ^6 s% p0 W5 g! o# k
set-plot-y-range 0.0 ymax

5 ]! t5 r, I! h4 k" Yend
2 f; n! q/ w- Y: b/ g* p! ^) z& e" y' P4 @
to setup-plot2
  B  r: d& C1 L7 m  u/ o, C3 [
- H0 r# T& f' p3 j$ v9 }set-current-plot "Trends-of-global-reputation"

! o/ q( B5 E# N$ T5 a5 \. I
- O$ A3 l4 K+ j7 g, F: e7 eset-plot-x-range 0 xmax
- F. [7 o, j2 p

; f! t6 k. H/ ^. _0 u7 h% n8 hset-plot-y-range 0.0 ymax
% m& A  S9 f- K& V
end
* K' g# Y+ R0 G  v; E( r5 K
" g) E6 Q5 }6 L1 {; |to setup-plot3& u. U% J2 x! ?6 @" h# O

2 D% a2 E7 T/ U( W$ z( hset-current-plot "Trends-of-credibility"
& Z- X! w+ ^, g+ {$ _0 j/ G* w! c

3 t; h( a8 s2 X* wset-plot-x-range 0 xmax
+ @6 [& H$ n* c) {3 `) P
, J! m) ^* N4 `# Q0 j) K
set-plot-y-range 0.0 ymax

) e4 S( T5 h# W8 ^& g) Bend) ]* r8 Z, k$ |7 R7 K9 s& p2 w
  }" Q* Y, p; L' c2 l
to do-plots6 x0 J. @* A+ O
set-current-plot "Trends-of-Local-reputation"
, C9 O7 L! j/ a+ F$ @set-current-plot-pen "Honest service"/ W  L* a1 |3 _  M; z
end  n0 f' p7 n; g6 t

$ l7 }4 h( J( v2 h; u' x' e[ 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.9 y9 F# u+ p6 a8 |
( {2 m7 H' {3 m/ X! J
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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