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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:$ r% u% I& {( P. d. T
to do-business $ k# C( y9 F" C& T: g
rt random 360
, _% a! U1 S" ^5 n7 T' o2 F fd 1! z: T/ c$ y1 O0 ]9 M  n4 P
ifelse(other turtles-here != nobody)[
; |9 W1 b# y3 ~6 ?( B   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
3 i2 `5 x4 r% \3 s! H. X   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # t- `# B2 L" y/ {! e
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- L7 ~2 H4 S) g& X: F7 `1 N   set [trade-record-one-len] of self length [trade-record-one] of self% Q6 A% d7 s* H( x  t/ W4 \: i# T
   set trade-record-current( list (timer) (random money-upper-limit))
* v' L; q& }* G; V+ V
" Z3 B& J8 N% }6 @( D& q+ o& x/ l问题的提示如下:' m" O- e6 `" {$ F* G

2 `* G) S4 h; v* ]7 @. D6 f$ \+ S6 Ferror while turtle 50 running OF in procedure DO-BUSINESS
& U. m4 P2 J- n! q  called by procedure GO
) U) G, H% |3 J$ Z1 HOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( P2 P4 f8 G, ]( U
(halted running of go): m; W+ B2 h; o$ l4 G; w/ i; C
% E* o$ L9 A+ R% I
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~~# N. w1 V4 m- x/ C5 I* M+ M
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" t& @% q& m; e7 ]% m$ u
globals[$ V: D" z' R3 x
xmax
  w  M% y8 Q5 e9 o! K- A3 ~ymax
  D# E8 Y& Z  ~4 d$ s& U: O% `global-reputation-list
' j! e! T4 X1 _2 g. o" q/ C! [8 ]: w$ q; m% I$ o) D1 K
;;
每一个turtle的全局声誉都存在此LIST+ |0 v/ F# D( @8 K" n
credibility-list! L" N- ]6 s( g7 D" E
;;
每一个turtle的评价可信度
, Q/ f4 Y0 t2 R" ?5 W# Z0 Xhonest-service
; [. a, O- E1 c7 i& gunhonest-service- u  T6 h7 \8 z
oscillation
" N4 |2 q/ g3 I5 p7 U8 o/ X. frand-dynamic; o- x' ?* e) @& o
]. ?) o/ H) s" h

- }4 R4 T# Q" d1 v( ^/ d5 M6 Kturtles-own[1 M2 q) N" S% n7 d9 h$ C: r& k
trade-record-all
& P# `8 t0 O1 s$ V! J; V;;a list of lists,
trade-record-one组成+ r0 Y" r/ j: U0 G& c
trade-record-one
/ n6 x, o1 i3 ]. f4 C- z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& d0 s( ?5 n4 Z" d3 \- i

. x) R4 a* W4 B;;[
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]]
) `0 y8 O  N7 g9 M9 }7 H7 Ytrade-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]
0 l) c4 m( p* C/ jcredibility-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
6 k: W1 a8 r: \neighbor-total: ~$ I/ c. a, v5 y. t8 b& U
;;
记录该turtle的邻居节点的数目" N) e( K9 U* C9 I3 I8 H( J
trade-time! L" C5 t3 T$ p  s% ]3 ?# k1 W
;;
当前发生交易的turtle的交易时间
, k, y7 f& n% O) v- sappraise-give
. Y# L" `) G) S# K4 A$ n9 J;;
当前发生交易时给出的评价
' u% r4 A8 n& z# n6 j( E# Bappraise-receive, w( X2 B$ H0 J; e4 l. J7 V
;;
当前发生交易时收到的评价: l3 ^% Z/ O) C/ a3 Q
appraise-time
9 K! f) _% X9 y) X;;
当前发生交易时的评价时间
: O9 P% v% A3 z) \; P8 ^$ D' u1 llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 t; z+ d2 V' I. ]5 \- T$ f
trade-times-total
6 F. B  E: x+ f;;
与当前turtle的交易总次数
4 O4 L4 |/ T5 jtrade-money-total: z9 S* H& d; \5 ^/ n
;;
与当前turtle的交易总金额
) V; ?  a# \+ t: ~# j' K+ m) u+ I0 flocal-reputation
- c. n  P3 E- Wglobal-reputation- @+ X7 u. X) B  b' C5 M2 L* h$ [" o
credibility
, Q- q7 ?; E+ u% O3 L;;
评价可信度,每次交易后都需要更新
8 R+ ?$ ^" ~& g! K9 B# X- Pcredibility-all
/ x% o0 D) }& d8 t4 R$ b( Y, i;;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% f: V& a" b+ X# A9 L
1 Z' U  S! `0 o  N
;;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
5 j9 y) E4 \3 k, Wcredibility-one$ U# W, }  {( M  p2 c& c( V
;;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
, t: _4 D2 ]4 V9 }- S$ Aglobal-proportion
2 R9 ~# Z5 I" F0 L/ F3 ^customer
  J) d) q$ u: _( q  Lcustomer-no1 H7 H- E  @/ z( N
trust-ok
( X# J6 Q7 _) Z' U  Qtrade-record-one-len;;trade-record-one的长度8 R/ I) H5 U5 \3 B
]
0 L$ ]" M5 V3 D* V4 F2 \
& U4 j9 W' ]/ f$ ^3 a# o;;setup procedure
7 x2 p+ r: y9 K( M9 _8 \- h
' W1 m& j5 b( p/ j& ]to setup: c( h% r( j  L4 S

: L/ b" h% ~) Z6 nca
# |# y- [# v& w" C
, K3 _: @1 T$ C
initialize-settings

. s1 o& `2 c6 R1 a9 v1 z2 }9 [/ o1 Z- S; J4 `( G+ }% N
crt people [setup-turtles]
+ z: r4 Y$ Q; _# ~/ A: M7 g
" k0 D- W7 p; I# H: @
reset-timer

9 T( [2 V$ d+ N) U
4 K3 v% R& Y& n: T9 F5 r, @poll-class

5 r8 m- l' s- a2 y  X0 o, A- N- p- v2 n  Q- `1 s
setup-plots
, @% z3 P( A- R, n6 I8 E# |
) e6 l4 O6 q5 S7 V: p4 t1 T- Z" U
do-plots

' q, ^/ S7 g' c- h4 x9 f( L: {& Qend7 I) U2 |5 q  ~* p: I7 U  `
- X7 n# g$ L' T, h5 F& E! @
to initialize-settings" H# E, M- Z1 P& p3 o1 K, r3 y
1 \5 {! y/ E7 P+ D. Q* Z$ L
set global-reputation-list []
% P" X  Z9 \* U: ]- ~4 @5 W4 Z
/ ~3 y: O! a% \! X0 H; U  S
set credibility-list n-values people [0.5]
1 V3 ^3 `/ a7 }6 |* P) c* A

! H* L5 I) N) G; h6 j2 [& `set honest-service 0

. g) ~# X$ C5 X1 Z0 u, C& {/ A
, E: ?* H8 P3 s* @3 ^8 Q# l* G2 `set unhonest-service 0
; I, Q* \: t$ K# f$ i1 L+ p
9 E! Y/ J( Z  H0 @$ C+ N" Q
set oscillation 0
6 f; _$ [7 N* R+ X2 H4 [

9 A6 |7 z" c( b* e$ _. @4 Zset rand-dynamic 0
0 S1 d6 g( N9 O2 y; l4 B2 D5 Q  l
end
* X4 C) F. O" k& g5 M
9 x  H9 {. X$ }% p8 p0 t7 Fto setup-turtles 7 @# K$ M0 M6 Q1 w2 D5 F
set shape "person"+ _2 d: c$ g+ [* b
setxy random-xcor random-ycor5 Q4 q9 k6 w  W; T9 u. `7 V( F
set trade-record-one []
: v9 O, H3 c/ `/ Z
" g* H  y2 l) B# Q5 V
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 r) r' d/ p4 n) N" s3 J) R
6 A+ b; H0 F! S8 G/ t
set trade-record-current []
1 ~" q4 w5 S3 q8 g' L2 c4 jset credibility-receive []
" i2 s. w0 t. P0 p& u, mset local-reputation 0.5% s: R, G' u& n
set neighbor-total 0
6 L; Q& }+ T0 U: _2 f" eset trade-times-total 0" _1 a4 X" i7 X3 v5 k  k
set trade-money-total 0
7 [) ~. R5 _, x) P9 o6 v9 r" ^set customer nobody) o( d8 Z& @2 Q* g0 ~* {. E
set credibility-all n-values people [creat-credibility]
- h: C% y# ?& gset credibility n-values people [-1]
: R/ x: u' p9 J* v7 Q! m" Vget-color6 E! i8 R, p, z
( Z% Z1 ?* \) I- Q
end
: |% M( [! l8 ]: e* ^* G! c/ ^
to-report creat-credibility
8 B; ?' b1 f1 P# U' k3 Preport n-values people [0.5]
& B* X" ?* Q6 u- y/ M" h$ Tend
4 O4 J- r, i9 l" J4 b
0 W5 p' X6 b3 R' u6 ?, ]0 f+ ~9 hto setup-plots8 ^* [- e) N( Y5 |! g
& `* ]) }; E) ^1 y9 ^, N4 L3 R
set xmax 30
5 r$ {6 i. m, x% q

+ {7 s) B/ Q, v. p8 N# @set ymax 1.0

, S) q) I+ z- W) A$ O1 m! r. s/ u$ m: Q2 S+ i6 E8 z
clear-all-plots

; Z3 n& Z% g- q5 L( w- z3 `, p% D$ D; {2 x; i0 |
setup-plot1
) D0 L0 s6 L3 _9 Q, p

* c1 I) h0 R' S7 ?- ]. X' h2 Osetup-plot2
) e! E: i6 j1 r8 S

: V. a+ _5 a8 K$ A" b9 ?setup-plot3

* D) R6 o) u2 Z# ^( G8 @end2 H7 e$ c" f$ G; O2 F

6 \2 `  `1 X: ~: W* @;;run time procedures
1 w0 S- E, i$ ?* C- v3 b' J8 }' D+ L5 ?, d8 ^7 ~5 C
to go
0 t' o0 }, R2 E- U# _1 S( h! o, O. R& X- l1 q( G; e- Q
ask turtles [do-business]

$ t% q4 i0 E$ [$ h! _* iend
6 A8 |# V4 H6 I4 g
: A0 \" D8 h/ W) E4 C; B" P' Bto do-business
, }6 R- r( {1 e) O6 u3 H

/ ]: V8 v' J0 I9 g/ g0 b+ U% S1 `+ ]8 P/ ~
rt random 360
6 _4 X2 s8 b0 Y4 ~/ F3 \" B
$ K( s4 W; X/ l9 D4 s2 ^
fd 1

3 l4 l. |2 G# E% r: I5 n
0 J6 B. A4 |. [% u3 v7 vifelse(other turtles-here != nobody)[
8 T8 r8 a( w. U8 H

6 q/ H0 `, U, ~) \: I  Hset customer one-of other turtles-here
) z0 i, B4 B9 |2 H7 D: L

) J3 q$ N) U  t" {;; set [customer] of customer myself

# @1 C. |, B# \: x* W" z* \) Q6 M; y( `! c. S: G4 g1 J9 ]
set [trade-record-one] of self item (([who] of customer) - 1)
  J2 P' s& U# g, X! u[trade-record-all]of self; U4 C' ~' P3 D/ E
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 d2 A% w/ C! X4 b$ C& m+ b2 k* L) G# K4 S3 E
set [trade-record-one] of customer item (([who] of self) - 1)8 j  Y, x) W/ _) ]
[trade-record-all]of customer

, ]/ m/ X9 B% x) G& N# f8 I$ @  b% ^4 F6 w$ P( {# `0 m
set [trade-record-one-len] of self length [trade-record-one] of self
) a& N+ i* j  r; ?3 s0 q

% \) ]8 R4 W- c' y$ A7 cset trade-record-current( list (timer) (random money-upper-limit))

5 @, j; Z3 A9 |  L5 m2 f6 u( r4 t) ]8 G4 P6 V0 e3 r1 x
ask self [do-trust]
  w" S  C' r# O0 a1 S;;
先求ij的信任度- L4 |; V5 `8 x+ G6 I7 l/ p7 p
0 C& r+ [# f3 p/ `
if ([trust-ok] of self)
6 U9 A3 x4 K5 k& @;;
根据ij的信任度来决定是否与j进行交易[  f  t& [% D, L! m. H' ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' O7 i1 H2 T& ?- M. c# M6 p* U1 M) B, V3 _* C
[
  M* T- ~1 i: o6 j# k* S) R

9 A9 h6 H7 i! Mdo-trade
$ {5 V" p1 ?* |0 ^% ~* l$ V! T$ Q

( [9 \' a5 I, C+ Cupdate-credibility-ijl

& H7 f7 M. _" I0 w8 ?8 Q: S( L9 L
( y7 c( [  R0 W5 Y. c( wupdate-credibility-list
. E# B* c0 p, H: M2 {' J- |' L
* P6 ?# {; O0 ~3 B* T

) w- L! j% u; k; H! I: v$ ]0 A1 gupdate-global-reputation-list
5 c% `) j7 N8 H

! a' t' w6 j, t0 Z/ _3 ~9 }1 Bpoll-class
- z# g4 ?5 z% O/ @: i/ N) ~, K

! \! \+ n2 T9 n9 g# L6 tget-color

7 e4 Q/ r- v3 A
( @8 m5 c" w! J]]' g0 ~- L& A4 v$ f2 k8 R; L. |
$ l- Q+ |- u: W" p! L) f3 x$ c
;;
如果所得的信任度满足条件,则进行交易
' R; s! p/ @4 O' m/ k9 A" r  h" v; W, D+ P* D/ O
[
/ Y7 L( ?& F5 ?; g
6 c1 Q: M, ^% r
rt random 360
* u$ j; b: K3 f

+ }. ]! K( A% p0 X2 C5 Afd 1
; `( c) }* B) P& Q

# ?, t" ?/ U$ w5 L( g" }% ~2 I! r]

( x. y' |: N3 y  X' a" x' p7 {" K7 {9 f  A
end
( s# w( `, i: Y1 `# K4 ~6 O' d

, i. V( a( b  k! L) d& u/ t' d% A" Ato do-trust - g# N3 o/ u1 G
set trust-ok False. t6 n2 K0 g6 q% X

  y$ S7 p9 K% M7 Q3 G' C
# ~) C$ c) l5 I
let max-trade-times 0
' _4 a2 i0 l% ?2 {; eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 W+ F& y; N$ u  P& clet max-trade-money 0% V9 w& U2 M8 O" Z) s# a& w- c( F
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 I( D- e0 y0 P& S/ 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)): ^& M5 J" y- z6 ]/ P# g

( \7 H4 y% V9 B
4 ]( @) `0 D' U8 @3 P( y7 Z
get-global-proportion
& z3 Z; Z- c' |# a  wlet trust-value
& `( C: {1 j( a! W/ G: S  ?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)
& u' c- H1 D7 j$ p+ }0 n: q% f
if(trust-value > trade-trust-value)
5 X+ s  o, O0 N$ y0 R. E/ R[set trust-ok true]
& c! d5 v" |; M9 X4 d' zend
$ Z, \- S9 w7 Q5 j, k& ]/ i( f. ~* B; `
to get-global-proportion
5 ?( @% c$ O3 o0 N% xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 i! A9 b9 v: P& B* z/ o3 E6 W
[set global-proportion 0]' Z( D3 x6 f5 Z0 a* I
[let i 0
) B3 j0 M4 O! Y6 y0 N( b9 Ilet sum-money 0& Y, I; T* H+ W+ U2 U# a  ]
while[ i < people]/ n- K3 D, F5 K" I9 x+ }
[. U3 g# L1 r! H! m! L* Z! `  L' ?
if( length (item i! P2 ?! A6 v( S
[trade-record-all] of customer) > 3 )

2 {7 t: R2 `8 n' b! i8 J% I0 q[2 b" x) h9 [- R  n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). R  L7 g4 f/ }3 [$ f  ?
]
8 ]3 u' a, w9 B/ s; p0 t]) X" E: W* @" R" s
let j 0; c6 G# f% a3 G* X) V2 E
let note 0  }$ ^8 b5 l, A+ r
while[ j < people]
% C% ]/ x4 E: A$ q2 I+ y5 l: ~1 ^[
$ K- Z$ b5 Q: Q( r: m1 l1 _/ aif( length (item i! u; J7 G; W; \9 d' x
[trade-record-all] of customer) > 3 )
% i8 v, G+ e: y3 @
[
" y# W; M# \! Mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); r+ ~# u9 M5 x2 t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. z' |( a# O* J0 E3 m% g. U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 f' A, _$ j7 p0 L) k
]
$ x0 c& u7 H- Q1 C. h2 b]# t$ T# A  M7 B% N' [5 o
set global-proportion note: ?. I" G( Z3 M7 Z2 G
], g, |' }# m# T4 Q* \* N; G1 g
end( D+ J% {/ S3 S4 l6 T4 `% B. E- O
# b8 E7 Y! A8 E6 x( B* P
to do-trade  s; |, Z% [# n: K  t( f$ o& R6 ]6 {
;;
这个过程实际上是给双方作出评价的过程* ^" C: i3 v; d% b' e2 {5 v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& k5 ]3 K( [+ B# i; @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ R# h! p. n. k" A- v7 K
set trade-record-current lput(timer) trade-record-current
1 ^6 @/ H& k& T6 o1 w2 {;;
评价时间
$ I, Z( \( O& z) o, I4 G7 \ask myself [
' I, i0 p4 z5 m/ B9 Q3 Xupdate-local-reputation
/ U: |! W, U4 Z# }1 oset trade-record-current lput([local-reputation] of myself) trade-record-current( z4 z0 G% C1 ?- R" h
]* ?! Y$ b, }2 S: C8 [7 l( `  o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: W7 s" }* t# G; G( h1 X* @# A$ S
;;
将此次交易的记录加入到trade-record-one
' V( h2 Y$ s$ Y2 q* eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 O. {. q/ E' `( x. Qlet note (item 2 trade-record-current )* ]: S8 O/ X4 t- D) r; r
set trade-record-current6 z5 D. o5 z* T# a
(replace-item 2 trade-record-current (item 3 trade-record-current))
- d; B! a0 B# M4 |; ^! R. I
set trade-record-current( N/ X4 k& P+ m: i# `  \
(replace-item 3 trade-record-current note)" ?% z  @5 ?2 ~/ B1 O9 }9 k- P( l1 G
0 S( Z7 x. E2 D5 g! B

" C- ~) j1 P. v$ T6 k3 Fask customer [
6 A- S! r) G8 M2 R: W' }update-local-reputation) t( {' t8 F" m# [% x
set trade-record-current, M* |% w+ t& a$ b: X1 `& o/ D( D& d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! \' }0 s, e4 J% ~" r$ z8 a7 Q
], a" ]# A4 R6 C* b. n% ^
2 I/ V1 y' W: H1 H3 g- Z+ D
' O& Y8 P" S" K3 |
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 A7 v  [. C: V% w+ e- v

3 Z( Z/ a: Z. N6 Qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 [+ [5 F; i/ o7 c$ e
;;
将此次交易的记录加入到customertrade-record-all  n6 I- H2 ]4 [2 r5 {. n# u* y
end" ~+ ?+ Q5 b/ B* S" d- C
1 [: m9 @! i0 a7 @
to update-local-reputation& ^& M" i2 Q! I; ^8 _, _
set [trade-record-one-len] of myself length [trade-record-one] of myself) p4 t8 D, X9 {7 y, w: `( c' @

. {, V6 n# c' e+ t0 g& g: m9 O5 ^: ]" V7 p6 _9 m1 o
;;if [trade-record-one-len] of myself > 3
! q6 B# n, t4 I( [, W+ r; t
update-neighbor-total0 t6 ?8 ~1 N( t2 F& G9 |
;;
更新邻居节点的数目,在此进行4 h* `! Z4 x8 z
let i 3- E% [! `! T8 c7 v* @9 l
let sum-time 0% z# d; I4 W# [) G
while[i < [trade-record-one-len] of myself]/ x$ o9 s" R1 C! Q2 J% _
[
: [) t( Y" g1 A9 Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 x+ a$ v9 O. p9 n) E
set i
4 ^; H$ C0 j! D' ^( q( i + 1)
: O5 x) E5 K+ b* W4 B; |5 ?: X
]1 ?# R- N$ v) g
let j 3: ^$ J1 M3 i9 |& h$ W9 i$ C
let sum-money 0
0 Y) F  Y) r1 D5 ~$ q# r! w+ _while[j < [trade-record-one-len] of myself]" i3 U3 X3 R" U. w' G% [7 t! X
[3 b) c8 A5 H( k8 g9 g2 V
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)
) j# I4 S2 y- bset j
" `' ~2 G* H4 K/ y% B: x" m+ X( j + 1)
. [, q- |" y+ L, |
]  A( C) a7 S: X, f
let k 3
+ @4 u7 C$ Y, L( O' j. c: ^* klet power 0
* H. t6 c) n% p7 `* \2 ]let local 0
2 v3 R, E; g1 i. F, M" ]6 V3 pwhile [k <[trade-record-one-len] of myself]6 D/ N# l* M& ], z$ j" T9 A4 u3 h
[
; i: ?+ m: u  H( n! nset 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)
$ k2 W. _& H2 b9 {set k (k + 1)
3 K$ H. k+ Y2 I  Q( M8 [* m]/ z- S4 n7 r* q  `* X* p
set [local-reputation] of myself (local)- d! h. {5 Y/ [3 m( o2 N& k
end& d/ ]( G' x: r# c- j/ N

' q; X) C  T  ato update-neighbor-total( F* M# m# Q' P) L

7 C7 n) P2 ]7 f; p6 `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 z' K) w" F: m: b4 v

! m9 S8 I& k6 m3 N

5 h4 r$ Y& m4 q3 R, n) pend1 K% O  S; ]' A2 h+ g6 ?& K' ]
/ ~& m& }4 s' K1 K! Q. Z
to update-credibility-ijl 9 ?- G5 @7 [( _6 Q
! q% V  m; m% h! o" y
;;
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。: f" K: ]" P- c$ p8 t5 y0 D( N$ Z, f$ ~
let l 01 v* Q' E0 ]3 [/ w. m/ v
while[ l < people ]
2 ~$ \5 v5 K8 I" n! f;;
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2 c. j, n+ w8 Q# U
[% I+ A1 B4 c. b, @; r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ n) G6 o/ X  m; X, n3 I9 Lif (trade-record-one-j-l-len > 3)/ n$ K4 z) a. V4 o
[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$ l% T/ ?. R2 b9 j0 x1 i- ^" V6 ?9 _
let i 3
7 I* U& i7 q6 v$ Rlet sum-time 01 w/ k  z) K* K3 u( e: v$ B$ P- y( B
while[i < trade-record-one-len]0 F. l+ }9 O7 {% w" P. W5 ^
[
* S3 M- i6 k0 |9 i2 i0 c  Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: E5 B" b/ b% Lset i
- P+ H8 U& ?9 S- @8 L( i + 1)
* p+ R% A5 r, C' J. Z
]' W0 V# B: Y' W& o
let credibility-i-j-l 0
& B; I/ e6 j. |# N;;i
评价(jjl的评价)8 k/ O) |6 q3 I; c; i+ h9 W
let j 35 @  m& d; a) Q6 O
let k 4" j7 @6 r/ i# B5 F
while[j < trade-record-one-len]
( P. x, ^/ L* w. s: a( L[! L3 r  s( q/ ^  @
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
% L8 n8 f: v* U" xset 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)
* ~  ~" a" w' j  o! B: nset j2 X& Y  Q( Q# g) l8 ^. f; C" L7 Q
( j + 1)

- n  b7 l" K9 X- @6 y6 e  A]
# u+ }& V/ h2 `  i: uset [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 ))8 l8 F. Z* D  t8 [) {1 M( _
% C' y  O) w$ O# b

4 g8 |$ `: i& |2 c. ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). ?; t* j8 l; b+ p, K; I
;;
及时更新il的评价质量的评价
4 l' }( _$ {: r1 Z( H2 m' \  s. [set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 e: J( {) {3 c; e- _
set l (l + 1)
8 m/ v  H* ]/ {" s]
! ?+ U* e& T+ tend& h/ m/ p5 f9 }+ J3 W& M

1 e6 {7 o6 ~. J' ?. Oto update-credibility-list, p" q% E! k  E" f
let i 0
+ @! s: T* |% I& W: Qwhile[i < people]
7 S5 G6 T* b2 m4 Q+ t$ R+ q/ k9 H9 }[2 H0 L+ E- m4 d2 Z3 r- r% b" V
let j 0; y  r2 x6 u( {& g. a
let note 0
3 Z" {$ r1 ^6 ilet k 0) w+ T7 `! V( U8 i- y# Z9 Y
;;
计作出过评价的邻居节点的数目
- u) g. X5 c2 a1 a# _2 |while[j < people]2 J2 ^  N. M2 h# m2 b0 o- _
[
9 O# _, {; N: vif (item j( [credibility] of turtle (i + 1)) != -1)- E; q" }, n1 W& M2 Y  }. T
;;
判断是否给本turtle的评价质量做出过评价的节点3 r1 s( q, {/ u) J5 s+ u
[set note (note + item j ([credibility]of turtle (i + 1)))# K  v  L: R9 ]
;;*(exp (-(people - 2)))/(people - 2))]

6 w6 ~8 N: B, Rset k (k + 1)5 m" M* K+ Q, Y8 \7 x
]
- E5 L' B9 r: \2 m2 G) _set j (j + 1)0 T  Z* s" s; D- v
]
( d; j; y1 P) Wset note (note *(exp (- (1 / k)))/ k)& X& G4 k4 w: ]% }8 w% |
set credibility-list (replace-item i credibility-list note)2 o0 K+ D1 e5 ~% L! A- S
set i (i + 1)
$ G& G. y4 ]3 o1 d5 t]* M7 g- H$ T/ w8 C- L; O
end
9 Q( o5 E+ r0 j, r1 M) z+ z$ N  Q; x7 G+ H" \1 l7 Q
to update-global-reputation-list
4 T8 x- P# O5 m6 Jlet j 0* v6 c, p) u$ p5 e- v
while[j < people]- ]+ ~8 n/ G2 d1 a! ~2 w
[
) @3 @2 B0 h: o7 |2 ^let new 0  Q7 ?! G! @, _  I
;;
暂存新的一个全局声誉7 }  V& p0 L+ b  V8 G2 K- A! q7 ?
let i 0
/ P- Y, H4 e! X% P+ S5 W' Zlet sum-money 0
9 S9 ~+ Q" |5 {; f2 D0 [3 glet credibility-money 0
" r% o% m3 Z& g  ]/ Jwhile [i < people]
: X) H' X2 I( v8 w' m9 \[
$ K# B9 l% X1 g6 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& u+ j& ^& U9 Z/ [8 K; yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 n0 f" K  R; e8 v! A+ S7 {8 Yset i (i + 1)
$ q. F! _+ z5 c) s7 w, c& v]3 m7 {( a& b4 j6 s; @* @
let k 0
& w& E/ n: @  V0 o( y4 A$ Hlet new1 05 A) m: v9 D  w! |2 ?
while [k < people]. I3 X0 t0 k! o) z# E
[  T; h% w' p; z" k+ Q) W
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)
+ s' y# O# j8 a) f6 H3 S* @/ }( T" M8 [set k (k + 1)- K/ n, b( v- y% \
]
- Y& O# C- V% p# a$ Bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 C7 ~' ]3 g6 n* w5 m" _6 N
set global-reputation-list (replace-item j global-reputation-list new)5 M: H8 C* ]9 c1 y3 k1 _4 J
set j (j + 1)
) k8 @0 h6 o- V8 B& B. y]
1 a9 d' |: s  _- \; a- R" \end9 c5 Z# q# w! E5 Q
% u+ ?2 ]  `; B3 ?! P" B# J2 l/ P7 Q
, `& |- ~$ v! J. P; S
1 q1 H$ Z" G7 {
to get-color  E. ~: v( O  f# h8 E; ?: H7 R* m

$ [7 Y3 Z- s, {, O" B" X& jset color blue
' z4 f0 _) x# T  _4 @" H
end
  `: K! @% K% g4 |) V
4 U  z4 K/ m) A5 }& G6 yto poll-class
# D4 G! J2 k( R; o7 T. Iend
( ]  S  H( ~6 ^; u+ Y" s2 T( [! x. e) a5 V
to setup-plot1
8 R! D' H! b7 @( ?4 D7 V$ \- e3 G" I! j  [
set-current-plot "Trends-of-Local-reputation"
- N& Z& g% E( Y2 s
! @5 R$ ~# k3 E  U+ J0 d# N+ W
set-plot-x-range 0 xmax

' u. O# @& |" {# h
  G: y, h. O! Fset-plot-y-range 0.0 ymax
9 C; m0 @, u; u" C4 w6 W7 k
end  e+ u5 T# m1 m: b: h
* f9 T4 c& h3 @$ h+ D/ m
to setup-plot2
! H6 j& q% e- Y$ m
+ ?2 h, z  o1 z) F: b% ?1 |' |set-current-plot "Trends-of-global-reputation"
  F$ d* y5 x6 n

& T7 i) U6 Z+ C# {; z; hset-plot-x-range 0 xmax
+ i$ I# F) W+ _- S+ k

! l( G/ g+ k  S# rset-plot-y-range 0.0 ymax
+ n. e2 g, T! @4 G  X0 J' t
end7 W7 p( \/ [! I, U" B  I
9 a! o$ M' Z5 l% Z& p1 x8 z
to setup-plot33 F2 p1 S+ N6 h

( [+ D4 Z( \2 f2 H- @$ Xset-current-plot "Trends-of-credibility"

4 }- b2 p1 G8 Q6 J+ R3 Y
' F/ `5 i% x; c8 X9 xset-plot-x-range 0 xmax
' `/ N! p; P2 h) N& @" I; I( v
) E2 L4 P% V* B) F0 N
set-plot-y-range 0.0 ymax
/ O3 c) h/ m& B3 W# B4 u5 P6 I
end# \5 ?. ]  b4 f

' W  M2 N- ]6 v8 K& y+ nto do-plots
' k2 ?5 {; _+ Y* K$ s0 U2 @set-current-plot "Trends-of-Local-reputation"
5 ^* o* ~- F: C8 u6 k! g9 ]6 |set-current-plot-pen "Honest service"
: i. g: f0 V7 Wend9 r9 Y. g9 }8 t. U5 w; a

4 H& A* d4 p2 E0 A2 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.: _$ V0 F5 d  l. h1 J# [
# i( u$ s( z5 g6 J% C  k
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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