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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:
* S9 j3 k& @/ \to do-business 0 K1 x) `+ H% L2 f
rt random 360
: S7 ]& B1 p6 g! U; m; p fd 1# e# \+ t9 W0 Y" l' t& L0 a% S/ V4 M
ifelse(other turtles-here != nobody)[$ V& L6 {9 c2 D9 d# S1 Z. g! `6 {
   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.
  V9 P4 _8 `3 t& Y1 B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& y' \1 k7 F- i  V) R   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- Z3 o' K& Z) p# D+ T
   set [trade-record-one-len] of self length [trade-record-one] of self
, I+ p9 Y  ]9 V! j" t7 p: Y   set trade-record-current( list (timer) (random money-upper-limit))
8 `* r7 A5 S9 {6 s
9 _" x9 }+ z7 I问题的提示如下:
- R4 V  H3 ^4 v5 @8 f- E
1 v/ e2 u8 B9 w) x$ d: E6 g+ Nerror while turtle 50 running OF in procedure DO-BUSINESS3 L& D  c3 h0 j- j
  called by procedure GO& x/ i8 r' [8 _9 u" m- }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 o% R4 e, b! S* \9 y: h7 H
(halted running of go)1 W, f' h2 ~4 ^" P0 K2 Q

' |/ L: c4 ]5 T) n3 i/ ^. x) D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~~3 \6 N  B( ^& a% @
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
2 H% Z' u6 g1 P2 e* W, K$ R+ n) @globals[
* D+ X/ R3 M: ^  j/ ]: S9 Sxmax
$ `( y) s# E! v' xymax2 k$ D! p  ?% b3 E/ O: d# ?
global-reputation-list
8 U. z: `( M& G) z: G0 Y
* o" p* U8 U5 l, `4 V( _1 m1 F1 ]% v;;
每一个turtle的全局声誉都存在此LIST& R  `# H6 h/ p, d/ \  }8 G
credibility-list
. `! N8 z2 g% i1 U* P;;
每一个turtle的评价可信度
6 C9 s9 f" v" W7 j1 I9 p# A7 p8 bhonest-service- H( f/ b' A+ d* I
unhonest-service" w4 o; I: N9 S, b( z* a9 b2 V3 ~0 x: V
oscillation  `: Y- V# h9 F  }5 U* X/ R! _3 ?& `7 S
rand-dynamic
3 K5 A8 B2 l0 d% x]
3 W! q' @2 J7 B! V. d0 n: x$ r' o. A3 w# s/ X& T2 W
turtles-own[" j8 U: K9 w3 y( h
trade-record-all! e: C. s2 s4 e0 L
;;a list of lists,
trade-record-one组成
1 ]7 p& k* C( W" W. ^2 b$ \2 ]trade-record-one
: ?  W; p0 Q# h5 i8 v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: \  {. C( _" C- s0 J, Q) m+ l/ \& `" ]. W0 Q
;;[
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]]" M7 ]* V8 |3 V6 j0 T% Q% K$ E
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]# }' u- ~6 I3 _1 N
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, i9 X; G/ n0 @  p
neighbor-total0 A# X" z8 f+ ]# w: _  d
;;
记录该turtle的邻居节点的数目
0 K: B/ O$ W* ]* W& q1 K2 ~+ Btrade-time" R& D- i# I6 ~+ @4 i' `
;;
当前发生交易的turtle的交易时间
& m3 H) H6 i: j* R- S1 R' Vappraise-give- c# I) g% }! o" V) b
;;
当前发生交易时给出的评价
2 I+ o2 |+ z  L7 h# A. E6 W  l" i  P! u4 xappraise-receive
3 i: W7 [, n% B;;
当前发生交易时收到的评价1 O; U7 n: Y' \( J
appraise-time. y% r% T7 o# F7 X) r
;;
当前发生交易时的评价时间
  F8 e* s; B/ g% P, F3 Z2 Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* m# {9 U3 D; {+ Y& |. N+ \3 q+ ytrade-times-total
: S: `1 M8 m3 K; [% b0 d9 ~;;
与当前turtle的交易总次数
6 [1 |' p' m' A3 Q& A8 A3 D( h9 Htrade-money-total; S, W* x% R# ~
;;
与当前turtle的交易总金额
; ~; K- B0 @) Qlocal-reputation
) N* b. B$ S# B% {- `global-reputation, l# L6 L' b/ Y+ V+ u/ E
credibility) G, D6 W, ]! Q* x: K
;;
评价可信度,每次交易后都需要更新
: N" `* S, p* e1 K( Q( {% p4 Qcredibility-all) N" V# g+ _2 Y: v1 }" j" 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
$ X% ^- H- G  Y7 Q/ _9 L! i/ u0 ]. p
;;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
9 l7 T, H, @; @: G3 t" h0 _credibility-one
% B4 E1 b/ d- K& F; O1 [  t;;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
/ h9 U7 |4 d3 G- \/ S2 R# d, dglobal-proportion
0 p7 M3 Z; y0 c+ S5 @1 f. h$ v) Icustomer: l: I( p( Q. e! }  ^, p2 _
customer-no' W' n9 l' K/ L* `1 O3 N' @5 C
trust-ok
4 G3 Q; y0 |, jtrade-record-one-len;;trade-record-one的长度% A6 p+ C! d1 x# l3 N0 Q
]
$ g0 s: p1 E0 Y- k+ `; c2 W8 r& J4 c, N3 J* x! L' e! S3 Y! O
;;setup procedure
4 b- `7 ?0 _& j; _! D0 _6 P3 y# @+ [- O( @* z
to setup1 I& m6 A5 Z5 B/ W3 r
9 x! U, H1 x; Z1 U4 Q7 Y
ca
) S/ d9 o* f; v! e3 g5 [; q( u3 L
. G- C1 c( ^1 l# f( X
initialize-settings

: ~1 z- c9 {) J- M/ j3 }1 g# j2 Q( h
& d3 f) r( t4 Ccrt people [setup-turtles]
0 I7 B; j4 k8 x2 H3 k+ _
0 x7 d0 ^8 @0 a! i! \
reset-timer
+ H4 z& v5 U7 N. N
( D( l" ~8 P, `1 s! h' r/ I
poll-class

) c& d% P+ f& f# {" @5 B
$ N2 k! J+ j9 O* U( Hsetup-plots
' w: R$ X2 j0 J9 q3 L# h' B/ R0 d
6 w9 l) v! T( |: }6 a  W
do-plots

' ~# z' q& F- b: l* Z5 A+ lend7 H; |/ u& [% M3 ]

( M  k, w) L2 R4 L9 q) qto initialize-settings
( L* ?8 @1 S8 V; f4 M
3 Z& n) q5 C5 T1 |7 U& H/ P' Nset global-reputation-list []
5 O0 C: I+ a' d/ ^
3 P5 |: Y/ q! k) \1 M, i  V
set credibility-list n-values people [0.5]
" i- i. K8 }3 r4 Q+ }  }

( h+ j. q5 K. x+ D0 \" f5 O9 hset honest-service 0

7 Z$ E: o0 Q- O4 c  q& O
7 F! ?) r! l5 S2 Rset unhonest-service 0

8 t: D$ ~4 `4 P6 h$ ?6 i. a# H2 @0 T
set oscillation 0

4 }, c7 |9 ^5 Z6 K8 N/ j5 B, k) Q% |) v* s/ f2 \: a. F6 D1 v
set rand-dynamic 0

5 e1 Z: C& N3 |; F7 xend
' b/ Y3 g. d9 r4 {5 l) f- d  d/ {! Q8 u) x; u& G
to setup-turtles
$ X1 `+ ~0 T  V; O) Wset shape "person"8 ?' T0 j' d4 T' G( |6 L1 [+ d3 M6 g3 [
setxy random-xcor random-ycor" Z1 X9 S  T) n0 x/ R7 E9 e" J
set trade-record-one []+ C. e% {+ {$ z" Z0 K4 g9 Q1 j

5 O. Q; U; m( q) ]( {* g, kset trade-record-all n-values people [(list (? + 1) 0 0)]
( C/ G, u, G* x$ v8 g. k) r! b/ n

2 J- J/ l* R! v9 pset trade-record-current []: v3 b- O# I; h' T5 n; x
set credibility-receive []
, L& T4 V4 w" ?2 cset local-reputation 0.5
: t" v$ v& Q0 ~* Bset neighbor-total 0
* q: `! P4 @; u  rset trade-times-total 06 r! N5 L& e0 }; y4 `
set trade-money-total 0
. l3 |' s( `- R8 l8 J6 rset customer nobody
7 c* h) d& q4 ], n0 Z/ kset credibility-all n-values people [creat-credibility]. ]2 P/ y3 L5 i2 f6 @
set credibility n-values people [-1]1 M$ K( y) w. y1 D
get-color
  {1 m/ q2 A0 r  p2 D! O5 d
* L$ g" @' X7 @
end$ l( p6 U3 H% T8 ?$ R5 h
% j- @% O9 ^- g) {! `7 x% R
to-report creat-credibility
0 ?- l5 ^+ n) `5 J$ [, r* U) kreport n-values people [0.5]
1 X" X4 t  P& b, @' o: b2 ^# ?0 s/ qend
- U% y# n! ]: S! ?. {2 H* p8 X! A
1 g5 J5 \/ D. p* X" q; q$ @1 g+ [to setup-plots
, q8 _: d! R8 W; e: J9 }( x* H9 o2 P6 H; d$ C  W1 R
set xmax 30
9 ^/ U. x1 X8 l, I7 U1 l& j& F  F

$ @# B% P" y( ]/ ^% R' j# C0 n( jset ymax 1.0
& y- l' H6 r: ~* U
4 @+ |/ b( i6 s$ R
clear-all-plots
8 [4 U0 M$ }# I8 J. y! \2 ^

* n; J1 e: o) G; F9 K* isetup-plot1
: {$ Q- a+ q: J
# H9 X5 G6 z, _2 a7 s: u$ \2 W
setup-plot2
3 x: W+ e& }$ {% X" o5 n
( E* d) z* a1 N6 k& q
setup-plot3

5 o3 O5 d  F; Bend
+ \1 e% K# `, \) D/ g. w4 h  ~5 C8 Z4 x  m% g
;;run time procedures
, ^8 w: L6 O1 \7 q& B5 R4 q( b! m( l  q  J5 M9 r' E% h( v% r- M
to go0 `( Y. v( ~+ w3 L( p  D! i9 v

, \4 g' I" }, G, F6 E/ o: T- N$ xask turtles [do-business]
- ^& ^5 I- }5 L
end/ y" s0 y4 x% ?) D5 h
6 r8 ]0 z  P2 }: S
to do-business
, h) ]2 V2 q. |8 O

8 P$ m- k* w  i' d& C
3 V1 T0 l# h- Ort random 360

: f' ?0 X. N( E8 K1 U
' c1 k2 A. N# j( l* e- S6 |fd 1

3 Z% Z% J* [1 ^; b* ^9 L
+ I$ v- Y* `# a6 `3 `! Xifelse(other turtles-here != nobody)[
1 R9 F! s) A4 \$ d  V$ H& @: m' f6 l

9 Q2 n  V+ g3 q9 mset customer one-of other turtles-here

2 ^% ~3 |3 ~" m2 l7 Z+ k
2 V* j8 P- s  w0 A- e  V;; set [customer] of customer myself
& g4 \! u3 b: \( U: A; P
5 w8 D$ x) _; @: F, {' a
set [trade-record-one] of self item (([who] of customer) - 1)6 I8 w% [4 v. |- e1 B! I6 @
[trade-record-all]of self
. ?6 Q( Q9 t1 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( s! P' [% x3 Z2 x) i) D  K

1 Y% {" w$ ^4 xset [trade-record-one] of customer item (([who] of self) - 1)8 x( F5 N+ L3 }$ i% ]2 I& d3 D
[trade-record-all]of customer
: E# F! {! A( J  @- S' o/ J
) D3 Z: q* a) ^7 A
set [trade-record-one-len] of self length [trade-record-one] of self
. N$ B+ `! h& [0 H; Q8 O
+ S2 ~6 P; L5 a* A8 }4 c
set trade-record-current( list (timer) (random money-upper-limit))
% _) D- T* y( y( M7 N# G3 ]

, I+ z/ l: f( ^! z8 I0 Task self [do-trust]1 |$ R+ s+ v2 q" w1 I
;;
先求ij的信任度
$ m. K' i9 M, p- _) K- Z: h, t$ G9 ~& F) f  f6 C
if ([trust-ok] of self)% S- s7 \: G& c8 _% V& M
;;
根据ij的信任度来决定是否与j进行交易[
$ l! k% A" N- \7 b5 @" Y& Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ {6 q+ M" x# F, r$ Q$ g, G
9 L1 F3 g# [. \, I( Y5 z
[
0 _7 W  z# j% g& e- K

( B; N  _$ x8 `* O0 ]/ n0 xdo-trade
! M* K/ @* q) w: \! r# w, T& F

; {& p% p$ Z' X: H0 Hupdate-credibility-ijl
' u2 l' N- N% d2 T6 @

7 L- l  d# P$ W' Qupdate-credibility-list) u% \1 @* |3 i  n: a' z$ B

8 f5 R+ `/ h7 a' S9 h+ O
! n$ _' ]; c8 W9 m" O5 T5 B+ Y. supdate-global-reputation-list

4 \  z( ]5 L9 b9 q/ i/ C; v* f, [% x* M' D1 R4 b
poll-class

! S$ X+ Q1 s( k& \) Q. V9 i; O
' m0 y4 L7 C$ u4 zget-color

( R, J! r  B/ o5 z1 G4 V0 M
; f: L( P0 B- [" e# a$ \6 I& x]]
( S9 i! b3 G. M6 n) H# L9 m0 a! ~0 k, ~- l3 S8 L, f5 J
;;
如果所得的信任度满足条件,则进行交易
% p6 `) l* r+ F7 Y
% G+ Z" y7 W* r8 u' k" h* K[
+ Q5 D: G) g- m" i

+ ?$ V* ]$ [& e  srt random 360

6 Q) t7 m9 N6 |, Z, r# Q4 J) u8 y$ S( R
fd 1

. t+ v9 o' j; l1 D* U, Y& a7 s4 b7 S+ U2 Y/ Q% r
]

+ O, p$ \2 e9 @: Q+ A. ~
. ?0 S0 A* z$ q; ^* [' xend
; P) h+ E/ k; V5 K- K) z
# W0 p( }/ {, @1 ^, X* p
to do-trust 1 {# H9 M5 `! l# b- P& X
set trust-ok False
" p: h# T+ V4 y
  Y* _4 R# L% {( O2 Q
$ I5 N7 f* [# H. S& [7 ~
let max-trade-times 0. N$ ^" K# y0 P" }- b5 Y4 @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& n# d$ y! v5 A1 j! ulet max-trade-money 0. [$ y* \6 Q1 m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 r) w. k! d7 K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: k: R9 ?% o0 D) m3 ?" Y
( j6 L! o4 Y% m0 m  E

, b$ f* p+ X  O3 r' E6 U/ ?5 P- G) Wget-global-proportion, L3 t) A- m1 Z, Q5 y1 @7 g% I
let trust-value- w# l  i- M) ?+ 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)

5 F6 `4 z! b8 Y- j& \1 H; y! Jif(trust-value > trade-trust-value), }4 F' A  _: F: g1 W5 r8 H
[set trust-ok true]
, J, W6 F2 Y$ G6 uend; d; N/ Y1 }1 F* l9 F  S( }
' K: A$ C* {6 M' k
to get-global-proportion
1 ]/ Y8 ^9 Z- k# [0 I9 j0 tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 d) O/ ]8 o5 v! q5 d( V8 ?# [[set global-proportion 0]
: o' X" v; l  J9 O[let i 0
. C; p& H6 z3 E* [6 qlet sum-money 0
; s" X) b% d4 r+ j) r9 Hwhile[ i < people]
- O/ X( _% Y8 f[
) f9 q+ o* L; F% l% dif( length (item i
0 g2 S3 u  \; p1 f4 ]. ^5 X, H[trade-record-all] of customer) > 3 )
  U2 p8 a& O  U3 n
[
8 o- w' A( C0 d3 t) A* Sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 E- D6 M4 k$ v$ X# j1 I! f
]9 g/ W! u, T9 ~1 w
]  E6 O' d) v  Z: q- B7 X0 H
let j 0+ h, z' F0 s; ?' a5 n# z3 V
let note 0
2 l2 c! |5 z+ c% t- Mwhile[ j < people]
. z0 c0 w  [; a7 `, T0 Y[6 h6 w+ l' U1 e6 a& e
if( length (item i& f. e4 ~  s# g
[trade-record-all] of customer) > 3 )

7 W" y2 y7 |( r3 W) _' I$ z+ P[, m$ |+ M2 I. s1 R) N
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& w6 p) z$ i! v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], J5 f' Q( D- K! T$ t7 v! ?, n
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) D& s" B% |9 B
]
+ [9 c8 q: y9 N$ o6 D! @; e' E0 Y  j]$ X9 i% v% Z( B! u
set global-proportion note
2 ~, x# O' s1 Y( b: X6 b! p+ M]
& f4 s) e) q# ?( z$ U9 Vend5 S3 P& R) P- [) v
% E. c$ J5 g* K5 M! x1 L
to do-trade: ?3 q# e1 R( K% W! V/ Z
;;
这个过程实际上是给双方作出评价的过程
2 w% U/ z' D" j* y3 l- sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 l; t) d( p, z' u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- j* R! n; J( K8 c8 J/ y8 P' Z7 Tset trade-record-current lput(timer) trade-record-current
& }" l* j: v- K+ i- Z4 a, J;;
评价时间
; V) B8 t, f. M% H+ t- U' qask myself [8 ^5 {6 s+ H* q4 Z0 q
update-local-reputation& }$ L. c9 u; N6 _8 C
set trade-record-current lput([local-reputation] of myself) trade-record-current6 ?3 i. x2 E6 V4 o2 x
]! N; }$ b5 u# f2 o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( c5 |2 ]' ?+ J) t0 L& @5 x2 Y
;;
将此次交易的记录加入到trade-record-one! p; U- t# Q" y& ]! K
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); D8 P+ p* Z; m  t
let note (item 2 trade-record-current )
- J8 g  l% @; }set trade-record-current
- b" S* M* |2 t2 o+ Q(replace-item 2 trade-record-current (item 3 trade-record-current))

. q# r) C" D1 @set trade-record-current2 ^2 A9 ~7 F8 w2 K' X
(replace-item 3 trade-record-current note)
/ N' @. D4 Z+ d1 O( k, h2 u! U$ e) Z+ G9 j1 r" M) d
$ J* M- b1 p. s; V4 Y
ask customer [
4 }7 h1 ~0 g% q( v$ b0 J* Rupdate-local-reputation$ u0 Z7 C) c# P( ~4 B
set trade-record-current
& U0 N" \8 ]# ]; F, }4 |+ i! k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 Y" C& l( ~- Q; e# j. J
]
6 K/ u9 e  f0 R0 Q  p" ^* S+ U
$ G9 _% ?: l3 \/ }& X
, e5 j7 Q% M6 r* I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 E. @3 E6 L5 a# W: X

1 A0 t% o9 E8 v( C! @( bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 U4 f, c) e6 R6 o- @# r2 z;;
将此次交易的记录加入到customertrade-record-all( O5 r& b' R! B$ G
end
7 U: v) ^: Y0 E
4 R* w2 k  G! {7 n+ tto update-local-reputation
% F3 ^7 Z" b9 a) ?1 N" Hset [trade-record-one-len] of myself length [trade-record-one] of myself
/ z) ~! W/ s/ }0 R- X. F' B9 i+ a: ~$ W6 y; N( O2 |, }
, S/ Q& j' {+ i( W
;;if [trade-record-one-len] of myself > 3
3 k0 x# t* b" S" U% [' d
update-neighbor-total% X* B3 ?# Q: I9 l3 e4 N9 c& {. a; B' {
;;
更新邻居节点的数目,在此进行
6 ^4 [8 e# p2 S5 E+ k7 flet i 31 _  Q; ]) V* i8 Y+ G
let sum-time 0. I- {% I+ x: U
while[i < [trade-record-one-len] of myself]2 n: _* z) }! i% t- E' m0 k
[: q* T/ _" f% H. y! v. {
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& H: k$ w/ e6 g) x
set i
! t( `$ N1 k) y3 Q* X3 m( i + 1)

2 L" U7 p3 ]: n]
! L$ G, t2 u: |8 Llet j 3; n. H- j( q  |6 l' }9 W1 L
let sum-money 0+ Z; W& h: ?0 M
while[j < [trade-record-one-len] of myself]
( T( e" I2 G$ a/ n4 e7 N( d  [0 l[
* H: {6 P. A% v4 {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)+ q; a7 G# N- @+ o
set j1 H8 S& a4 G- f/ H
( j + 1)
# k, r1 d( S) _
]
8 {' b. z3 j2 j  |7 glet k 31 D3 `; h" y. f. W) d
let power 0. p5 f* k; ^- I
let local 0
) `2 \% ]* r  j: Xwhile [k <[trade-record-one-len] of myself]6 O) F+ W! w7 D  j5 C8 @: H
[
; ^' I4 s2 e& d$ V  P  o% mset 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)
+ s8 U" o% f/ G9 s# @set k (k + 1)
" s) S; P9 v7 t6 q! j2 ^( S]% f$ N: }+ g3 _8 C2 a0 _% i7 p
set [local-reputation] of myself (local)( B4 O3 X6 A  @6 E
end  L; M8 O5 l. f) U
- @" c8 m3 E* x( i; b
to update-neighbor-total
9 ~0 `8 j3 P# }5 x7 X  n6 [. X2 c  l: I& ^; H5 J; e; P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. G# F3 [: g4 f: O' D

5 c7 J7 D  k# t$ [9 H, R3 L' |
$ H9 v- S# H0 N5 q( ~
end+ c' i' w2 J. c7 B0 T5 ~4 K8 @

2 y+ [- z, P2 {. h0 Mto update-credibility-ijl 8 u8 P9 C' t* R
- I! M7 e$ Z( l; V' X# d
;;
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。
+ A2 g; P) m0 T8 u$ q+ `' Mlet l 0# c. F( X5 e1 J0 W6 d
while[ l < people ]% B+ Z* p1 O3 \& q9 u* l& Y
;;
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% `0 [9 m# r: a9 b. y, w[) e  u- d0 R" i
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# b" H, ?7 l6 l, y1 E
if (trade-record-one-j-l-len > 3)% B6 }! R1 b) r8 ?* A
[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
: f- @+ v/ R- @& [! c7 Nlet i 3
; o" ~3 h+ I5 a0 ylet sum-time 0
# @+ Y; z4 g$ r6 m1 O2 N0 Cwhile[i < trade-record-one-len]
  J& g: r7 l: `: T$ _1 m' c9 k[$ R* o! e) n- c) v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 _( |: e% X9 l- Q4 q
set i
$ D% P) ]4 v3 m4 p/ o1 ]# V2 Z( i + 1)
$ i$ h0 {6 O" B3 C5 \) U
]# ^) ]( m4 q/ D7 ~, S- |/ t
let credibility-i-j-l 0
# L$ C. v! h0 \% \4 r3 e* A;;i
评价(jjl的评价)* v: [$ q  s8 A6 r, ~2 j
let j 3
; a, x% |6 T; o* J4 r! olet k 4" F% f* U( r, [3 r, K3 f0 x
while[j < trade-record-one-len]) I; U$ t& h! \5 n
[. t! z3 j% j* Z3 z/ W: l
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
, B1 _" ^" L( B+ D  O9 p3 `  k6 q% Zset 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)
0 V$ m6 t' S8 \% B5 Vset j
$ h) K3 H* e0 u4 a( j + 1)

' D6 c! c% E) @3 X- z% I2 x]
9 C, ?" J$ y% r; R5 f. g8 w0 q$ Cset [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 ))
& i6 I' U3 ~9 [  N& x0 B8 a. U) x
3 {* V. t. n  e* M( c( Y+ y; R
/ ~8 c7 {, S& r+ I2 x" X; O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 {1 {) s5 r( V; Q3 A( _;;
及时更新il的评价质量的评价9 _6 ^: ]9 ?& `) [2 N" J- Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 {4 }" ~1 b9 c0 K7 r! j; cset l (l + 1)
: T% I1 Z6 ~8 K" a]
7 t' z- x( S8 z+ V4 Y7 wend
/ O2 ^& _0 ]- X5 ]5 ^+ G, S/ h/ x4 ]6 F+ E& ~/ z  H  {6 r
to update-credibility-list3 x9 E0 Q8 J6 V( t; B9 f7 b+ ~
let i 0
/ S6 Z7 a. _1 s) D+ A. Vwhile[i < people]! S' B' N4 q' n. l
[# S: j2 f" E& P2 h8 a
let j 0
' q7 D  a* }& x$ O8 ^let note 0
. F  R9 `6 D7 S3 G/ j. d* Alet k 07 j5 f* ]# P- |9 t2 \7 Z
;;
计作出过评价的邻居节点的数目
9 d7 z5 Y6 L) m2 qwhile[j < people]+ t  u! O: a# h( N) v1 K! o
[) p9 I6 k/ R& u
if (item j( [credibility] of turtle (i + 1)) != -1)
! P, \3 Z  J. Y3 o8 q9 ]1 x& w;;
判断是否给本turtle的评价质量做出过评价的节点+ T) s6 x. k4 l9 C0 [; p
[set note (note + item j ([credibility]of turtle (i + 1)))' E4 x# O  P6 K3 l5 o: e! e7 r7 V
;;*(exp (-(people - 2)))/(people - 2))]

( u3 H3 e0 N/ Wset k (k + 1)1 J0 L( O& S( d& D! w6 A- ^
]
. [& C. A1 H: C1 lset j (j + 1)
% @  c) h, I+ M% c7 {& S]5 u. [, ?3 ?4 W- W
set note (note *(exp (- (1 / k)))/ k)$ Y4 i& A8 p3 Z
set credibility-list (replace-item i credibility-list note)9 C% D& ]' I8 ?
set i (i + 1)7 h! u/ N( B  x* W8 }; D) L1 p
]
' ^, i. G. {) b* Gend; S) v5 @' P; _/ Y) p( [

9 C" l; b# d$ y. V$ i# W/ f8 Z; Wto update-global-reputation-list1 H% Y8 c' L+ w9 k% F+ u3 i6 H
let j 0
$ o5 u$ m' X6 v, Q9 d# Z, t" ^  Xwhile[j < people]
: R1 q: w/ [# \9 Q- O, J2 G% \[& ^& D& K- f2 Z0 z7 ~- a
let new 0
$ ~' j5 o$ F0 w' Z, _$ S;;
暂存新的一个全局声誉
5 W2 b. y! t$ e1 S* P- S( Slet i 0# J3 C4 W1 A  l3 S! M/ V/ t' g0 h% W
let sum-money 0
) s2 z* K: c7 Q  Y9 h4 J7 [let credibility-money 0
1 n5 ]- `; K) ]; X: Owhile [i < people]
8 r( }9 Y8 w, B; H0 ][
5 l, b6 ^+ I. M# rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- i/ `& S2 @+ n" T2 S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 s5 m1 W5 t. Fset i (i + 1)# R$ r( A% Z( S# o- x9 \
]7 V6 R2 K. e( @7 V
let k 0) x7 g) x3 _: B, ^
let new1 05 e) k8 K! Y, j3 F; v
while [k < people]
8 U8 Y; d6 l# j1 o( j3 I' {+ s[+ S. D+ }4 W( x: u0 A2 x0 q
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)' @" i/ O8 Z3 X  M) _
set k (k + 1)
* l0 f: L# R% A/ C  U3 E]$ W5 m) n" P  A; s! f6 R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 Y/ ^# @5 z( @- a7 v* J$ lset global-reputation-list (replace-item j global-reputation-list new)
  s4 o! r  @! E7 ?! Q( b/ S& zset j (j + 1)
6 O$ P" K4 M$ e$ C' e4 ?( n]7 l/ s: P0 l2 q
end
/ n; V/ T7 C2 W/ [( z1 A* m+ x) Q) n& E" q$ A+ ?' e0 K
: \$ n4 w/ @" j8 w, a1 H

! y, E0 O  g2 d& O( Y% Sto get-color
$ j3 o: d1 P. F4 A" T, O4 V0 A: q- B) E4 I; M) M; I
set color blue
- l( r. _0 c  o, l
end1 s0 b  e5 V" F( `0 r
9 J8 Y) K8 a! T5 i# E: s
to poll-class
6 _% ^4 q. j7 W% \- _end1 |; U8 S' Z  ]$ Z! V5 l

& [* F* c: G$ s# ]/ n5 y( Zto setup-plot13 b* B% V& k0 J1 l* m( l
& p: k6 K3 |/ z# D5 ]1 E
set-current-plot "Trends-of-Local-reputation"
' C/ F! |4 b, D" u7 I: H2 R

0 g  H4 e( A- {  m' `# u' W. L( Aset-plot-x-range 0 xmax

& s  Y: H  P9 Q- r( B
3 Y1 ~1 B" a3 _; A) p9 Jset-plot-y-range 0.0 ymax

. N, j; g- R# P3 P# e) Eend
- M  u7 I$ T& o- m6 |8 T3 E4 S/ x% {
; {9 y4 V, D8 B& ?- W, w( jto setup-plot2
0 S& a; T: ?* _- i  U3 j; r% }; {6 _/ Q# M$ E
set-current-plot "Trends-of-global-reputation"
) Z8 Y7 O* l+ [1 r1 b1 a- j6 N

9 I% ]9 ]3 Q5 E0 h- sset-plot-x-range 0 xmax

0 S  S* D8 w1 C" j1 ]' t) t
$ G- V6 r' P( ^) r. R6 rset-plot-y-range 0.0 ymax
4 N# l$ X$ n! p
end
: f0 h7 a8 A4 r" A& e# {
! L- ^( P5 ^$ }  Q$ [to setup-plot3
6 d! x, L- t* i2 K$ @. m1 S
. |2 s% _9 k$ Q6 V3 A1 Sset-current-plot "Trends-of-credibility"
9 f: e. N. ^) {# {
+ I4 ^+ x+ ^' |
set-plot-x-range 0 xmax
( `' _( f' p6 X- F0 x: ^8 ?

7 F/ L3 _" M2 q+ ]! sset-plot-y-range 0.0 ymax
! S* a* b1 F3 P/ B$ }4 m! f& i
end% g7 L# S# ~0 q
5 l' _) R- _5 B8 `! g3 T
to do-plots
: y) o, X& m9 |* Q4 C# r: bset-current-plot "Trends-of-Local-reputation"
5 S, ~# F$ Y4 ]( b  Q# Nset-current-plot-pen "Honest service"0 {. w+ V, q7 U. J
end1 U# n8 E- r; \* v  F# K1 T

# W3 t" S* l4 L, 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.$ `7 _6 O. {. M' S( C6 t7 S: r  K' U2 A

* @1 E: t" ^& Z/ d4 z' S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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