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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:
' b6 y. ]7 U/ [to do-business
9 s2 s; X6 ~3 _& w rt random 360
. o6 ?! @! f' U. [- |! d* h& A- Y fd 1% \' G+ N0 l& V0 V$ l
ifelse(other turtles-here != nobody)[( H8 V' U8 @) r3 l2 \
   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.* g' c& K5 ]! t* L% C  |- ^+ k6 K9 k6 a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) j) k0 X* L( i3 a( Q  x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. I% ?+ L1 R  _$ g
   set [trade-record-one-len] of self length [trade-record-one] of self
! R: w( w' ]+ y8 y& {* w) l; c   set trade-record-current( list (timer) (random money-upper-limit))/ A% o2 i6 I5 L' m( H( F/ Z# ]

. i, U  ^( w* i/ g$ A问题的提示如下:2 N: s8 [- r* O( o$ Z# L$ u
, C2 t1 V% F1 ~2 c* }  h' M, u
error while turtle 50 running OF in procedure DO-BUSINESS
+ v% T' \' Z3 K) ~; ?  called by procedure GO
0 X# H! J$ m& h( _  @. {) G; rOF expected input to be a turtle agentset or turtle but got NOBODY instead.
* P6 x! _& A1 _* D3 B
(halted running of go)
- ?$ U. c# C* U/ j: W* h5 \( }9 S/ |0 U* x( z  J+ ?; p$ P' 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~~* Y8 ]( r* v8 J3 P; l3 e
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
  a: b5 }. ?8 D) W( I+ J3 `# @# Oglobals[# [. C/ {2 Z. r. Q3 t7 {, `7 l
xmax
7 H8 P$ ]( G. p# _& ^& J% tymax* p3 @( \8 x: t; c* L5 m1 V
global-reputation-list
* h# r- j; ]# I1 @' z1 X0 r" P
! l7 X( g. A! [8 c;;
每一个turtle的全局声誉都存在此LIST- i& V$ B7 j3 k  S
credibility-list
4 K5 A2 K1 l) }* S/ I" @; W6 x( {;;
每一个turtle的评价可信度/ @$ O% ?! d) o$ Y. b! w4 N
honest-service; r4 j: U4 U* F9 {
unhonest-service
1 U9 S& p0 u+ I& ]8 U1 x6 T& [oscillation
* G% k% R* A" }4 `; _rand-dynamic8 e4 i! b2 g. F
]1 K/ `  V6 h9 u* [0 X' V
, u/ W0 S7 k$ t- b; J
turtles-own[
( A1 W: y& Z( M' G7 Q$ r6 Wtrade-record-all
( N% {& A" `5 b5 v3 F;;a list of lists,
trade-record-one组成* d, K) i9 }1 c6 {+ K7 W* j
trade-record-one
0 A# h4 Y( x3 u$ u  c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ m. e( H" x' w
, p) c4 F+ A4 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]]
$ p1 K5 C0 \3 w) M  @8 V  K5 ~6 dtrade-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]# ~$ {- l4 l: {, U9 S6 I
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; K3 [, _4 K- h5 j! d; j
neighbor-total. M; x1 Y7 D1 q7 `9 M) F6 m
;;
记录该turtle的邻居节点的数目
) \: A+ F/ t5 V# g3 N1 ytrade-time% N  l8 `: p: c
;;
当前发生交易的turtle的交易时间) h6 {" O% ^$ N" z) y
appraise-give3 u2 M# Q* q' H3 }- F' q7 ]7 P9 |# }
;;
当前发生交易时给出的评价1 x: n, T0 M) k$ v8 E
appraise-receive+ b9 r! \7 [0 o$ K" U
;;
当前发生交易时收到的评价& B/ V8 V( j& X$ }* h
appraise-time
6 B8 J& K! I8 ^;;
当前发生交易时的评价时间. k+ S, d1 _. Z5 f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 J8 W+ \& x* L+ {9 x3 _+ a( r& g
trade-times-total" Y+ g1 W& u7 v
;;
与当前turtle的交易总次数) X3 J' a" u! K% ]# k
trade-money-total
( b/ D4 A" k/ o2 @6 b;;
与当前turtle的交易总金额5 G' |: H8 I0 k% S+ \. U& a
local-reputation
9 [; y; T- o2 l( Gglobal-reputation
3 W3 b/ o9 ?( [0 Z; J* Lcredibility
; s  W7 h- U& p7 x; P. y1 i' m" X  Q0 I;;
评价可信度,每次交易后都需要更新5 F% A* c/ v2 p) i* }
credibility-all
# i1 h2 ^% r& q7 `% l& R) p;;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
9 K1 N% Z& n$ Q
& k" w4 m; Z* O2 P; V;;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* m3 @/ P  p4 A+ q
credibility-one
* b& a0 d2 Y: _& B+ 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
' l8 X5 U' V& f  L" N& e8 ]1 ?" kglobal-proportion
- h% y, S' v+ w! w1 v: F; ]3 Kcustomer8 [8 k# e; b# v' j
customer-no" S" X; |# e6 ?$ Y/ O
trust-ok2 G/ j; w6 h: H* Q' M* v3 N" |# o
trade-record-one-len;;trade-record-one的长度
+ g/ Z9 ^2 u  R- T, B]- g; V9 X+ k  g/ E+ ~
1 R: b- J/ v- A7 M% n" Q$ |" c
;;setup procedure
$ g$ q( b  e" c: _9 r% c7 t3 f9 H" D1 b) C
to setup, t" c4 ?. e% Z

/ d+ c8 _6 j% y  h5 g! @ca
  w. |: x8 w' P$ Q

- g7 J7 e& l3 e7 K$ v2 Sinitialize-settings

- P  j) ^/ j/ P8 {$ j' b
! S' J9 r  }7 Y$ P  Ycrt people [setup-turtles]

$ R2 u4 {$ o& `/ \/ Y8 g4 `" N
! Y& A4 J8 G& n  o: D0 l5 y+ treset-timer
& N: K1 ]: ~7 [' S) \; f7 a9 G
3 \- ?% L1 t* w. S
poll-class
7 y" O, M0 u- D! b; h4 A* j7 @

& y2 a% u% k5 F" c0 K: W4 msetup-plots
) n3 q3 F: |' U; z' A( E
* X5 m8 P9 x8 l& {* P* r
do-plots
$ K$ O/ }4 g/ r" U
end
) o. o" X. @5 S+ R/ T
" c* J! t9 `6 s$ U/ Rto initialize-settings, z% M9 t6 J, G2 L! o

9 M% _* o( s# k4 t3 X3 Iset global-reputation-list []
5 i; {) S6 W/ A7 v
0 u& [. I8 Q+ j* v5 s4 g' j0 ?! ?
set credibility-list n-values people [0.5]

3 k1 q' K- y! Q0 u$ ]( h2 U, T" F1 _$ O+ k2 |
set honest-service 0

, ^& x8 \6 a2 P. z. f$ L4 P# M2 U* L6 `$ }, t% D6 s9 ]" s: q- ?& \
set unhonest-service 0

' z( N6 F% ]$ V/ K2 e+ P* e
* L4 `+ l. Y+ J. E* ]! _: ^set oscillation 0
' F1 M( b; S/ |3 x9 U7 E. B) `

% ^0 m, e0 r7 j/ A" x% P, Xset rand-dynamic 0
% u) T: L6 _* b3 Q- P) k# [
end3 s$ L6 w, r/ `7 v7 C
& u* E* S2 p. l( e' |! r2 X" e) C
to setup-turtles
- X! F& G% h) |- H( Fset shape "person"
* S/ q! @8 ~/ D: wsetxy random-xcor random-ycor0 j/ \9 l" V+ G% C. y: ], F
set trade-record-one []
$ O, U& a0 I% |  u

& V0 y. ]6 ~* F1 d6 Y" lset trade-record-all n-values people [(list (? + 1) 0 0)]
; W2 K% V5 S+ a! o1 p$ M; u3 W

3 V6 p" q7 E2 a6 S) q' wset trade-record-current []
# M# a' U5 J. p' O1 t8 F" bset credibility-receive []; ^! m4 N: y9 A# x* S
set local-reputation 0.56 A" t7 g8 k2 Y
set neighbor-total 0
4 x5 ~: t8 u6 ~1 H: z6 T7 D" jset trade-times-total 0
( b8 a0 d* i! s7 M6 ^* zset trade-money-total 0$ ~& W4 J) a& X3 _8 O
set customer nobody6 `; j. n! f3 Y- S
set credibility-all n-values people [creat-credibility]
1 W; {! m) Z8 E: f9 o& Yset credibility n-values people [-1]
9 E* @  Z* L3 r! eget-color2 c# y) b* U1 X$ ^$ X$ W2 T# K) m
. y# ~( Z2 T; u" y# i8 t9 c5 |
end4 l1 j2 v7 E) W/ T- z1 R, ^# V
* ~+ Z$ F& r" M4 X7 p  x1 N
to-report creat-credibility
: W, k9 T) i* C! ~* sreport n-values people [0.5]
. P8 m' O1 f* Y) `! m# Send  |# q" v! }6 ~
3 Z! {9 [4 w9 Z. E: x" F& M
to setup-plots
1 i/ e! J) o) m' b. B! K5 y1 {
& y/ l/ u  |" |set xmax 30
2 t. R; r6 {% ?  |
5 ~2 E5 ?4 R9 O( E
set ymax 1.0

8 v" B/ o9 p0 U5 [: \7 K$ x: Q
# U3 t: ], |3 N# y% V: I% ~; Rclear-all-plots

4 F* I9 j7 d0 g7 t$ i) o: _9 g8 t0 T' y% a( @, c% S& W  H8 H
setup-plot1
2 K9 d6 X$ v$ Q. Z, z: k
1 N& Z& ~0 z7 z, B. u( C$ J
setup-plot2
5 F2 }1 Q. F5 A% `/ N2 ~
! B# L" u( E' w( C
setup-plot3

4 R5 K* `% N8 A% Z5 z. ]. {. Mend
- t5 P- a1 s7 I* T2 c9 t1 X+ X* }  W! O% M% M4 o+ d
;;run time procedures
6 I" B+ V5 g" s6 C9 J+ s/ F( {, C9 r9 W! D0 e6 P
to go8 g% t8 o4 [0 P1 n- L

* u8 b! U, ]4 {ask turtles [do-business]

; n2 S: x& ]* e, M" p* Hend  @# f+ f8 G4 u/ T* D& Z: r: A
+ U; ^) g; A' w0 S2 i1 F
to do-business   K* Q- Z0 z% D1 F( H
! j( k3 I  l- I" i$ N
' ?: o- k% y: D+ y; g% `
rt random 360
( b$ g7 K8 M( P% [6 s/ w: g

& f5 r4 W# w! e$ \3 c/ g+ l+ V( J- I  \fd 1

8 p! N1 T4 ^6 p3 A, i4 W' ]3 w8 _" Q0 q, @: S( K; e
ifelse(other turtles-here != nobody)[
7 T% ^/ \8 t: c0 G# y$ v1 C
9 M3 @3 [! n7 z' D+ m' W: f1 k
set customer one-of other turtles-here
; {6 e5 K& b) `  g& k

' P& `# _' l6 i5 D. }( ^;; set [customer] of customer myself
) a7 E6 q" |( Q1 V4 N

$ q& C6 A5 o, ?7 Dset [trade-record-one] of self item (([who] of customer) - 1)
- j: ?* z- P5 [9 X[trade-record-all]of self
/ K4 }2 W$ y; \) g. I8 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 E: ~  |) @# D  J$ O. v0 i( c

& O# W7 G7 X5 x3 w2 V: P, b+ E/ _4 @set [trade-record-one] of customer item (([who] of self) - 1)' d1 n% l, f$ L
[trade-record-all]of customer

( t$ {4 P1 c* w# `8 M
; c! K% x  G+ P: O/ W' {+ sset [trade-record-one-len] of self length [trade-record-one] of self
- _$ N( b) i4 G1 k  a0 V: _
! [! P/ a7 \, m- D2 B' H5 k4 ]% G
set trade-record-current( list (timer) (random money-upper-limit))
$ ~& \, B: a! j$ b; I% \
- ~' z+ t; R% W6 v
ask self [do-trust]
  d" [- \. j& b, Q, c0 W, w;;
先求ij的信任度
7 J( p0 L, y/ I) N) L. A0 j% ^
* M" f, h6 q0 U$ k4 K+ Gif ([trust-ok] of self)5 q3 {0 A2 }. C5 M. L& O! a5 G1 W
;;
根据ij的信任度来决定是否与j进行交易[7 l  q! f% }1 x) Z" q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 A: D' Z% a# d( {, U1 _
- R* d% P2 |$ e% J2 ~& o
[

$ b" p0 v. Y) i3 \3 f. g- }0 n0 W
/ r) ~1 V3 p; fdo-trade
2 T. M- `& V% [' q& f! X

# R% ~$ }4 J1 M1 P3 N+ d, w. Uupdate-credibility-ijl

  {1 Y3 U: ~& `6 E! q% r' v
. B* S" |* e' u9 X2 p8 ^update-credibility-list
: y7 o0 ~' B$ `
. q; ^' h" ?2 C

% _- f: v5 t& f" O. X. Z# uupdate-global-reputation-list
: j2 B7 p! {2 W3 [6 D

: _8 c* w7 j# ^: o6 Qpoll-class
" U- ~5 W2 c: M6 B, ^

( P4 {% O9 h3 M& e& fget-color
3 Q0 g5 ~4 r$ |1 s
$ g* X2 P" S" P4 m- d+ v
]]  y* m5 _. x5 p- V/ K6 ?* l

( |! V" R$ F7 e7 @: g: }7 [/ Q7 r;;
如果所得的信任度满足条件,则进行交易
5 w& H/ K- \: [: v" t. |8 e1 b, t. `
[

/ b6 {4 Y. @0 V. I5 y) d$ W+ p9 E6 ?- M' z: ~: P# k: [
rt random 360

, m  x! K0 T6 Y  x9 `
1 l/ D: o$ ?- D" ~1 ~( R& Qfd 1

  z( G% X+ R, H2 g& }& h6 a1 f$ r. e" S* c' }' q0 B# R! t# k
]

7 D' \! N7 B0 A! ^+ W) ?1 @  \+ T' S+ R
end
% C) b/ v5 N9 \5 C

6 ~+ E( p+ S1 v- Sto do-trust 8 m' \# C  H/ q
set trust-ok False
# O  ]+ H2 W' M( K
* L# L) ^% B0 ^: r
# I1 O4 g1 L$ u7 A
let max-trade-times 0
/ u1 ]; @- n) }" T/ _: ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" ]2 K! A* I% |let max-trade-money 09 L" F3 C1 `* T. N0 _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 _$ _- E; A% `- S1 _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" X! M: r' v! \. z. X+ @. W3 L8 x7 s3 g4 w$ ^
8 _  t7 |% L& `+ t/ g
get-global-proportion. ?0 c  I/ \( t. A- H6 h( u$ Q4 E9 v$ J
let trust-value
: S- j$ j2 T4 M8 g1 p4 jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* k$ X$ M& d' G$ D' V) v3 r% Wif(trust-value > trade-trust-value)' x& C0 K* K# M# }. B, r& K2 O
[set trust-ok true]6 z; d8 [+ L' M6 |( N
end
% F1 N9 R: p/ }' j1 h0 g
, k$ T: W/ Y) H$ L4 bto get-global-proportion8 h3 @# o+ ~/ Q- i7 w6 y5 }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 _( P- y+ G7 P7 T, m
[set global-proportion 0]
- c3 H) J, R/ ~5 |" ]) p[let i 0$ L4 o9 J" s. l3 f9 Q+ F
let sum-money 0
" D; v) j1 s- n$ Fwhile[ i < people]
  H$ X1 J0 d, [5 C, k[
* {  j* x/ T( b# A5 I+ a6 x( T# xif( length (item i( A6 V3 O- _  i6 i! r
[trade-record-all] of customer) > 3 )
, o( m$ X  U% {) W8 E
[6 j# N, q0 n$ N  t! |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! M. C3 {/ k7 d
]
0 q* ~7 |* o8 J9 b& b4 ?]
4 Z' H- p% I4 ]$ g5 ^let j 0
; t. z1 C7 o2 [6 s7 H5 R! ulet note 0% ~4 g6 k! q3 |3 Z
while[ j < people]
2 q4 J' J' C  _0 p4 U# G* Z[& P3 u* u3 u9 g, ~, d
if( length (item i3 ?! u5 ]- X# E4 M7 r  f
[trade-record-all] of customer) > 3 )
) l- V- ]& D# `/ g8 i& N
[' J8 g% F$ h' W6 ?' n/ i4 a7 h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' _# k, q/ Q* G5 O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 D' a& u6 Y7 }  }$ m- X0 u1 y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 ~4 q$ g7 y6 M9 J2 k) B], `1 s6 _0 C( Q1 J8 c
]! ]3 O& m; l! e
set global-proportion note) e5 S; Q' |5 R" e5 P4 E7 x
]2 {. b0 P; r* H
end; T5 j1 j; W/ F$ H  M
- i" Z& m; `0 Y' `; e
to do-trade. G( d/ A! F% S8 j
;;
这个过程实际上是给双方作出评价的过程; i' K, y  q2 y: ?; j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ e2 L* d# {  e8 k" `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 N( f8 e. B# `- Q3 q8 r
set trade-record-current lput(timer) trade-record-current) p$ i. `  d. h- w) l
;;
评价时间. a6 T6 r1 W$ T2 h; @" d
ask myself [
# Y& v6 E( J* i' c% w7 A" M; L3 d9 Vupdate-local-reputation0 ^; Z+ R6 y' [. x( W% Y; d8 A
set trade-record-current lput([local-reputation] of myself) trade-record-current+ ]7 M/ `# p  E) Z# n6 Z0 z9 ]
]  |. X' C& j- w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 P/ G$ V. z/ ]; }* U;;
将此次交易的记录加入到trade-record-one
# ]; u$ j* b3 x+ L# h7 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! t: i) c1 w3 x' E! l. olet note (item 2 trade-record-current )
% `" w5 Q! w. }1 Dset trade-record-current
- L- z- K: I' ~/ |9 p7 Z. W(replace-item 2 trade-record-current (item 3 trade-record-current))

2 s: `1 a, g% `/ Aset trade-record-current
$ g  ?& m0 q3 m( q+ U" s(replace-item 3 trade-record-current note)
1 L' X. E- e1 c+ v# i' ~0 e
* ~. ]2 h  M% \6 l) d' M
! H! y" s# D; X4 ?7 j, p
ask customer [
4 ^1 a4 m% t5 i% y/ K; h$ uupdate-local-reputation/ e5 ~- _0 W- u+ o2 h
set trade-record-current2 @4 h, j1 e6 Y/ f3 r3 O. o* B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* _7 t/ I3 [8 Z+ X]
3 u8 X: L- s5 B; t/ {5 i. D0 D: Z1 S0 U7 U& l# P( N0 i! W% `

7 m% Z9 ^7 x! Z" B& t! ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: r! z9 b7 h/ l- h1 G2 Q

7 X5 f1 _$ A4 `) g) R; L1 c4 @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' c; q: L. }3 {;;
将此次交易的记录加入到customertrade-record-all  `3 x: G! [! L. }! N3 {
end6 x) }: ]( I/ [( h

$ z- U8 V& i  ?3 K3 lto update-local-reputation
( M! B% b* k3 C! {/ ^set [trade-record-one-len] of myself length [trade-record-one] of myself: ?' a1 z6 g: ~: [, g( W: @# l; w
+ P8 _+ B! y0 I( v: M( {7 R

# w" u+ H, d) @3 d4 J! W9 D;;if [trade-record-one-len] of myself > 3

! n1 [+ S1 w3 l+ Q, }: Yupdate-neighbor-total( q3 q8 H+ T" L1 z4 n; k) t% g
;;
更新邻居节点的数目,在此进行
/ M3 d0 c6 D/ @! J/ D, n3 T" q% Alet i 3$ x6 d5 H- S2 q4 p& F
let sum-time 0
$ x; _7 D; b0 V9 f4 L3 f5 ^while[i < [trade-record-one-len] of myself]
0 `! p, C" L2 @' [$ f. L9 d$ Q! j[' ]* y7 y% k4 ]6 _7 a  ?8 K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ ?! d* A3 z, c3 yset i0 l, B' s4 y7 |8 a( x
( i + 1)
5 m  X% B. e6 j9 w/ n
]5 J2 E2 @9 B- J' S$ j1 ~: Y
let j 3
8 v4 x7 Q% U6 B  x7 c! V: qlet sum-money 0- e0 I; p1 ^3 W: w/ [0 X9 ?
while[j < [trade-record-one-len] of myself]
- b- N4 I" |. R% j' l[. H. \  W( L  P! _9 W
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)4 C+ P* s6 _! {1 ~
set j
% P- B3 d8 [/ Q$ V* d1 N( j + 1)
3 `* F# t0 N& w' |& Z) f
]/ f& z* @& v# [- q5 U+ g, O, l
let k 34 N4 N* V* S. t  D/ j% P! ^
let power 0% S, Q# M5 h* {5 T+ {- ?
let local 06 F0 V3 {$ e+ D
while [k <[trade-record-one-len] of myself]
6 y1 b  `" T7 Y5 ^! O[
) ~0 {$ V/ {7 _% [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)
1 e/ P( b6 L# F+ q  u. h$ K% P+ Gset k (k + 1)9 d+ O5 _# B- r) l# s: x# B
]0 e& g0 b- N  B; c3 n! |
set [local-reputation] of myself (local)
2 V9 q' q; K" I4 _end
5 z  ]1 S( w9 s. B5 r, f7 W% Z  e. G* S. D; G9 v8 y
to update-neighbor-total9 ]0 K6 E) s- A9 C+ B# G3 W
$ o3 g# h' z* R; q6 g6 F+ j
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( @; j- g/ n+ s8 L3 Y

; Y; b; H4 Z: a5 v! p5 W
. Y8 J! n* x5 f8 p
end
4 b4 }! W( ]5 [/ [! ~1 B9 y7 ~
6 F7 L7 ~: `1 S% [( S1 Bto update-credibility-ijl
) ^' B, z; G' w, g
- M% x6 e- p6 ^$ G. g6 ?1 M' };;
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。/ k' {) d+ A+ @& n. t
let l 0# Y" u2 m0 Y7 R" Q5 h2 n
while[ l < people ]
9 a) D& c9 @% k+ E- C;;
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. s0 M  X9 _. [
[# r6 R4 h! U& s7 W' C& @2 _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ z5 C0 _+ `8 x8 p9 c7 A$ Wif (trade-record-one-j-l-len > 3)
" l- R1 r- ]/ B$ @5 }$ ?[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-one4 g# h  d# m3 A+ r/ R' u) S3 e2 J
let i 3
9 v) j1 ~5 A, T& Q5 Clet sum-time 0
9 [2 F) ]% x) j" ]) V6 ?6 x$ s2 dwhile[i < trade-record-one-len]
6 L6 P: {$ f" @  M, J8 T[
$ @# J  h/ e1 m8 u8 R2 fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 c8 d/ f: A$ j% U" R( x9 X  lset i% v, s: a( r3 x! T2 m1 v
( i + 1)
' l' y% x. E3 M
]  W' J& Z/ D$ L
let credibility-i-j-l 0
: \, D0 p; @; n) L;;i
评价(jjl的评价)
1 h- o8 ?8 t8 c) j4 V# t! `let j 3
/ i, f  E) v7 b  W- `; X$ e1 ?. flet k 4
& C; G9 F% T' B3 y7 V  _# \* Swhile[j < trade-record-one-len]! j" E7 H& b6 |( h( M. S; @3 e
[- b$ p# E* a5 A3 R3 m
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
' c+ Y7 d2 W1 B9 T9 B/ o2 j/ mset 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)* T7 s, o/ s& n) ~
set j
; P/ Q  `9 O  P. Q# ^. e( j + 1)
" @: b/ t4 H2 V% K$ l1 ~
]
4 N7 y5 [! |  t% dset [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 ))
; B( |( _2 ^# w* O( y$ {* E' ~4 M% F4 `0 P9 z  }) s+ |/ T

+ m, F$ v# ~; zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 E, u/ M9 o' w) j* P+ V4 l, F2 @;;
及时更新il的评价质量的评价, q0 g0 _' L$ i, M- M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, |0 Z1 l' E0 S/ C7 \5 r' t% zset l (l + 1)/ v) Q/ }2 d0 ]1 s9 J
]
5 p  s1 s$ T3 [- g2 b- Zend% s1 C* E/ U5 X8 ^' y3 D2 v

0 K( y' l+ O1 D+ k' b& v4 r% {to update-credibility-list
) j" r2 F( x/ V- b8 j% h3 ?6 f6 rlet i 0$ o/ Z7 E- w2 {& j
while[i < people]
9 _; X* f* x! Z2 [) t+ \[# |: R" X$ p) A5 _/ X3 \
let j 0$ P. z2 u8 e2 y1 i; t" v5 x) X
let note 0/ g# C/ U4 M6 P5 P; H/ n8 G
let k 0
0 L4 m5 A$ J% t8 @) U* t;;
计作出过评价的邻居节点的数目
  e# \; z( W4 [! S0 I; twhile[j < people]
9 \, B; y" s0 y; Z) O8 Q[  d' b; K! W7 F  A, ^, Z2 R
if (item j( [credibility] of turtle (i + 1)) != -1)
& U8 q* V% h' i7 u# U& ^;;
判断是否给本turtle的评价质量做出过评价的节点
. }# U! Y# O9 v. T3 u9 M( w[set note (note + item j ([credibility]of turtle (i + 1)))3 }9 B* Y+ Z& i# j9 k
;;*(exp (-(people - 2)))/(people - 2))]

& p% c' C9 ?  G/ m2 d# V! B8 Rset k (k + 1)
/ K& a4 y: M1 ~1 n]
2 Z8 w5 v$ Y" ]" Aset j (j + 1), I8 s+ p6 k$ T+ w" W4 p7 i9 `
]
; }2 ~+ n# h: G& Oset note (note *(exp (- (1 / k)))/ k)
: E( Z9 O( V, L1 y+ oset credibility-list (replace-item i credibility-list note), I5 N9 P6 Q8 }! z; h! Z$ R4 {
set i (i + 1)3 e4 z" Y+ e  i- @& ?& x0 R
]
3 \2 ]7 R% ]$ {+ M: K  Mend# B! L' M7 E7 p3 F5 |4 E

& N% z( n1 r- P& nto update-global-reputation-list
! O, L5 c) _: j, H& alet j 0
! t5 M& \! U8 }2 |) B9 u/ B& Zwhile[j < people]$ N1 `; X+ T& ^( k* C& J
[+ \2 ~4 F6 m6 v7 q  S; z! ]
let new 0
4 i. b  f7 x) }8 r5 _;;
暂存新的一个全局声誉
) S: D; ?* a# X3 D8 D: xlet i 04 c7 F- O. n" S5 O3 r; K+ J
let sum-money 04 P, i# b" o7 K6 v7 L
let credibility-money 0
3 }5 z2 }, y: z* d* [* Owhile [i < people]
9 [! `  [, o8 u# D4 y* g& @[
* Y. t4 P% k; L. ?1 ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) X5 J! v& u5 P2 g5 iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& F: x5 @9 e) S: v/ n* i2 d" jset i (i + 1)+ `% I4 A% {$ f5 H, k" {" x0 D
]$ u' o" L$ }! q- P1 B
let k 0
! f6 ~1 c. {- d! u, U2 e2 p* alet new1 08 j5 b  E9 ~# D! x  _3 V4 I2 p
while [k < people]; m/ l% {& ?5 q7 F. B0 R" p% o6 J. G
[7 m1 I, {- n/ C5 _% B6 B; \
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)
/ D& K5 _2 I+ _set k (k + 1)+ s9 i; ~3 O4 L6 Z/ X
]3 M- a  X3 s' a( f5 i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 p% m: \) e7 }& O. e+ }set global-reputation-list (replace-item j global-reputation-list new): r2 z1 m% c4 g
set j (j + 1)0 I' j' D2 k: J. @1 x- g
]
: P" G. u0 j; d4 {: Y: oend# A* a+ E; @* f' X, _8 `- O
9 `: f/ F4 z  h9 m  f' h' F
; @1 m% s) F% J/ F, @4 w# w

7 y$ `' g; [# c+ Oto get-color
' |8 v3 j0 v& t% C6 S) T
, X- F- T/ R5 _) a2 S$ N5 Yset color blue
" s) g& o) r" W
end
! S1 @2 H  b5 ?& G! e4 \+ Q( \* o1 U1 H/ |+ A
to poll-class) ^8 z1 F0 N/ c
end  m" o' G% o! q" M; Q0 n
/ n* W1 i- t6 b
to setup-plot1, X. [5 g8 ]7 f, O2 N

' f' W6 ?9 ?5 s6 L7 A) uset-current-plot "Trends-of-Local-reputation"
' Q5 D8 j6 L: R1 V  a) ]
6 y4 z% C7 J' d1 ^
set-plot-x-range 0 xmax

  U% q7 F2 [9 a: `  N* s1 e( q# n) p- ]/ {/ V
set-plot-y-range 0.0 ymax
3 p( f& f7 M+ s3 G, Y5 k0 I" Q
end
. t" S9 b" c9 k9 o, R
6 x: I. s+ b* v+ Rto setup-plot2
( B# J& y# s& w& `) M* T" O
6 v1 C5 Y+ ?4 D4 bset-current-plot "Trends-of-global-reputation"
( w. ]. Q# L# N& j6 g3 C
6 O: T3 `" W: h; Z
set-plot-x-range 0 xmax

9 M# \8 V' E: A' |& q
! ?" J- P. O0 Bset-plot-y-range 0.0 ymax

) Y  B5 z- f8 i5 ^$ \) Iend# h& V7 G: \0 p- B  p3 n

/ z6 j8 A: O1 wto setup-plot3
& W3 Q8 O! D$ T% p
$ N, e9 _1 I$ G4 G' tset-current-plot "Trends-of-credibility"

1 ^& K! s) M3 k' L# U! c( d6 i0 U; n2 A
# k' j2 ~0 j% T6 K6 pset-plot-x-range 0 xmax

: n, u& H; m' ]# S. i- u* l) c  Y; H
8 x/ T! _2 p! U; l# hset-plot-y-range 0.0 ymax

5 j+ y# V0 e3 I: Wend: P0 Q; K) v1 w5 Z5 T

. f# b' K9 l6 n0 e  x( S( fto do-plots) G1 i2 q0 I9 L. B& w5 W3 h
set-current-plot "Trends-of-Local-reputation"( I+ m( l+ x( e- l: y5 O
set-current-plot-pen "Honest service"$ ~7 Z3 d+ W# A8 O: V/ y
end
6 {3 w1 |3 a; O$ v8 b( N
* @% Q- K; k& a; J3 |  d# ][ 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.
# r% L: K( i+ s& v8 D$ g0 y; u) V; }
6 O2 h8 R' j$ u& x& a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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