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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:" D2 E# l( r( f" m1 J% @! |
to do-business - @; ]- c6 A7 P& o. h
rt random 360
: R- M+ E+ T( D  ~- U+ T$ e fd 19 S4 s: D1 ~/ r, I9 U2 h# P
ifelse(other turtles-here != nobody)[
7 h; ?) o2 R( \1 S8 _1 c   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.
# ~4 Q! J9 v5 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 E( p# ]. U" u) S. m7 o: C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( m  W' X3 e  G5 J! U
   set [trade-record-one-len] of self length [trade-record-one] of self
4 ~- W2 Y6 v& G0 }! b   set trade-record-current( list (timer) (random money-upper-limit)): r# N1 }- x( Y- w, a; T
. i- d- b( ?" m, u; w
问题的提示如下:: I, F( H9 s% f) b/ _& s9 F' W# w" g

+ x* e8 P7 }# yerror while turtle 50 running OF in procedure DO-BUSINESS5 `: N& z5 a! t* L2 x3 r7 c
  called by procedure GO
: o# E/ i3 [* B+ j# y7 g4 Y. FOF expected input to be a turtle agentset or turtle but got NOBODY instead.. T; r1 c0 f& y! }( H
(halted running of go)9 G0 L5 E$ d5 ~( Z' K2 H
- C% `1 D. L8 x6 U' R  I+ {2 [  ?# E
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~~
. r1 I$ q& Z0 t/ J' |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
9 T& d& i! |, ^) y& ~! W) jglobals[  T  b$ Z0 L, u* P/ M
xmax! @1 G$ f. g! K. {" S5 z: j
ymax8 `% f# Y3 W% l4 x$ k/ A" {5 A4 p+ m
global-reputation-list
7 H" N4 u0 o) N3 r2 c$ \' h4 `  H0 y# h! ]8 U
;;
每一个turtle的全局声誉都存在此LIST
' [1 w2 n/ v! T/ ~/ u( Tcredibility-list
+ g: ~- B0 O0 m3 t6 Z9 ~- x;;
每一个turtle的评价可信度
( X4 `4 N2 ~- v+ J- `7 ]% Ohonest-service8 |$ Q' h1 r" h' R9 @7 ?' c) x
unhonest-service
( _$ D( y( i: H: Doscillation
, F; ?" b6 N0 A; h. L7 D% I# nrand-dynamic# [8 \2 I9 t- q" u- f, j: `
]
" ~& e/ v7 n  B# i* `' \8 s3 p1 L6 v1 F) {! p) o# V9 E
turtles-own[
. Y; b, P# y/ J7 j4 h8 M7 x8 A. gtrade-record-all
: }1 P1 y0 u" J;;a list of lists,
trade-record-one组成
6 Q+ w" @. `: A% B* X& s9 htrade-record-one/ i* [' E( [. Q- A' n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 t5 C7 L4 @2 F; G# c) ~( z4 a6 G( G4 j+ M4 F; [
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
5 V( H$ y+ ]1 B2 n8 k& z, I  S/ y- 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]( x* Q2 @  e; T" c1 o& |
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list1 B8 z8 K. l/ h2 R9 R
neighbor-total
' ~& s5 k# J" h/ r( q;;
记录该turtle的邻居节点的数目8 Z$ |" V. Y- `! X* B/ H
trade-time8 X) \) ^4 N- ^) Y
;;
当前发生交易的turtle的交易时间2 P4 A+ h# b. A) {$ V
appraise-give+ ?% l; v, `9 {
;;
当前发生交易时给出的评价  v* H4 o5 |9 P4 Y. d! W# z- I" ?, H
appraise-receive
- ?4 y/ V! w9 W0 |  C7 l8 n;;
当前发生交易时收到的评价
# E2 m+ [1 _1 e# `  z8 |$ A; ~appraise-time. Y% ^8 `5 u. w, {* Q/ ]2 {7 P6 u( H3 ^
;;
当前发生交易时的评价时间
+ E8 r7 a2 y+ Z& ~0 Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 _  ^' n+ g0 A5 z+ r" {/ j% y% ^
trade-times-total
  W; n5 i1 z; ^! T+ {;;
与当前turtle的交易总次数
* d, W6 X8 H7 G# btrade-money-total4 ~% k: s, M& [2 W7 V
;;
与当前turtle的交易总金额3 \8 T% H4 h' T% L
local-reputation  X1 o; t' Q8 n/ _2 |
global-reputation
7 }8 m$ Z  Z+ P( `- W, Z7 x8 s$ s& scredibility
" t; x* ]  g* V; L;;
评价可信度,每次交易后都需要更新4 m0 E" w5 P  i) B+ }3 i% y7 B
credibility-all
( d% M8 P, @( s9 t: K$ u1 k2 h6 b;;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
' D$ r1 U1 Q4 l$ k( N  Y! f; U4 Y$ _7 _" f6 M2 _
;;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
! |2 P( }4 o  rcredibility-one
% c) k2 G# A# ~;;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* r7 O. E( \* v8 u8 L' C% S
global-proportion
" r* u+ o; q% w/ [customer
  U7 e1 X" C/ c# wcustomer-no; Z/ r# O' \6 i5 c4 \: F
trust-ok8 }  H! b8 ]0 B; h; N9 ?
trade-record-one-len;;trade-record-one的长度
9 c$ }0 J5 H2 Z9 C0 S# C( @]0 K7 ?; p$ m3 j8 B
/ R2 a7 n/ k1 X9 x- e3 U$ W
;;setup procedure
1 W& V8 r2 Y) x( r- H+ ]6 I/ N* }
' o# E, H! _6 h5 Y- H- qto setup# T+ [$ g$ Y9 N* _* Q. U
+ l  K" U3 Z; L$ X/ b: S
ca

1 g7 a% }) r  ^: J; p& q. D5 h# ~5 K9 c+ ^
initialize-settings

  K, |2 Y$ p" b% d8 y! i1 F4 I
' l& D! j- n- @5 A5 Hcrt people [setup-turtles]
$ Q) q' V/ ?' T2 X

4 {0 c# `1 R; L; Rreset-timer

; u, \* h( N7 {. x) l
5 ^9 z7 e- m7 r" Vpoll-class

) L% f9 i6 y9 y
; Y/ @8 x# d7 _8 T5 Usetup-plots

$ t' s! _, [& j8 o; n2 g8 c- `8 Q5 l
do-plots
1 ]5 h" G9 z* k2 u- n8 T4 F: x/ m* ~
end$ x' m) h& p  d

9 Z4 n. X2 r' a- T4 Yto initialize-settings
: D& c4 F' H) O  w6 J. ?9 k9 s
7 e$ U+ U! z; P) w7 cset global-reputation-list []
% G$ x) H, n6 w0 x
9 B; c. h3 \% y
set credibility-list n-values people [0.5]
# @! p4 I- c0 I" ~

9 Y8 }/ T2 W0 S4 P2 eset honest-service 0
& j* p$ z# S8 N% E1 q- \9 _% f

- F& T9 @7 @9 G$ k0 Vset unhonest-service 0
! ], u. q+ J# m
; F) I2 N; I3 \; i0 F  `
set oscillation 0
2 t, e9 p0 Z' e: A9 O- y; \9 I
" ~+ y9 n0 [+ ]+ w' j0 j
set rand-dynamic 0
8 \! q* I, R9 m7 b
end# o) Z  F8 ]% t3 a, c+ C

- ?/ G) D1 z, Z% l' O" y$ bto setup-turtles   H3 M# j( O3 T! e7 ?' B' Q
set shape "person"
% e. z( B/ f/ Xsetxy random-xcor random-ycor
  V, `- l: v7 |2 w4 c+ w' x4 X( |set trade-record-one []4 T1 e3 P, B+ y/ S$ T

+ x( T5 B# i7 C3 m+ s+ i( ^. b7 Xset trade-record-all n-values people [(list (? + 1) 0 0)]
  Z/ R& X: W' v& D& W9 \1 F

9 {5 ~  a  e" cset trade-record-current []
' N- P( v, d7 ?set credibility-receive []# I0 P9 Z5 s+ _1 d4 Y
set local-reputation 0.5% J5 a" ?" ^6 B
set neighbor-total 0
+ l2 \9 h, f; j( Z1 e% q! Bset trade-times-total 0; @5 p3 F. v: _7 O4 g; N
set trade-money-total 0
* t, `; K* v+ f5 z8 b& jset customer nobody
, x, R4 `4 `* N- bset credibility-all n-values people [creat-credibility]
! o, I. z1 X& D, L- ~$ r8 L% }set credibility n-values people [-1]
* A/ l3 T1 F7 Hget-color( r) Q8 v7 i4 S

3 q' U( r* t5 z0 ?; Z: gend# t; _# L& d9 i3 F- t# _& I6 o  k
: G% H: e1 \% R# y/ S! U# H4 U8 a* I
to-report creat-credibility
4 g6 T- ]% q: S1 }* z0 p% [report n-values people [0.5]
9 {) f- V% i* T1 @  S1 y  Mend
3 h' N- v' j) o" E
' B3 G$ U# p  z- Q6 _6 E. rto setup-plots
' q  G0 v# W, i- e) l. R& T2 i9 _( I* e
set xmax 30
) H. T# ~' k# \  W
, D" X- m9 l+ S. X+ j0 X
set ymax 1.0
4 z7 O5 T. U. l# S" I% \4 p

' G7 K) z- R* N* C7 e, eclear-all-plots

" A. w/ ~0 ^) |% q- G1 w. [+ a& P* o! ^9 m5 G6 D
setup-plot1
- U0 G" ?# J! j$ O+ O* U7 ]* }6 ]

& ^8 D' L/ F- J& T1 a" P) Asetup-plot2
9 c, ^# L/ v' p, J$ m; l+ l  |

4 A* p3 W$ X6 K/ v: d1 Q# msetup-plot3

, g% Q& o" }/ n) l& r) Eend
2 I$ q# I8 K: S/ M- l. X
( L) ?+ T& A0 q$ t;;run time procedures
5 t! b0 S/ I) F2 J0 Z
& Y% K* E$ X/ [$ M# [# \to go
; I  C% I5 J; n6 H0 X9 H* c( C. b. s
1 Y! Y) y+ p! {1 d) d( fask turtles [do-business]

* {$ a* v2 L& H) P$ p' p3 rend
% j4 F) F3 a: _( {- d* }
/ v4 f3 U7 J: f, T, mto do-business 3 {$ ]7 l, n, A
. L  B7 a/ x$ R  M+ ^0 P% }$ A
1 n; @3 F! l- k  [* N- y
rt random 360
& n" \' q' _$ g6 i8 A6 j
3 x& u5 d, I6 c7 ?2 F# k
fd 1
' a7 z0 |0 T' q8 `- r
- @" h) h3 |* k1 m2 u, b' Z
ifelse(other turtles-here != nobody)[
# V& T1 M; }" M! I$ c7 ]
2 r- b) l7 \9 S0 L
set customer one-of other turtles-here
/ ^5 o  P, ]$ x
' p4 o- b! I- k
;; set [customer] of customer myself

4 h: O5 `1 H5 f: r) \8 c
# z/ U) G1 U. }; ^) {% r7 l* }set [trade-record-one] of self item (([who] of customer) - 1)
8 E3 r+ ]+ o3 E' P0 v1 |& X& a[trade-record-all]of self: t9 [: p: C+ N& I8 G" g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' X5 O6 B% _8 z
0 u, V2 {, ?( w7 N! c) g8 L0 Z
set [trade-record-one] of customer item (([who] of self) - 1)% J% W. y7 D  X8 P! _- p
[trade-record-all]of customer

# F% G: i; Z" M6 Q  h, n! u: j- ^  L$ q2 ?+ G- V
set [trade-record-one-len] of self length [trade-record-one] of self
7 e9 I+ C2 A) ], a
, |3 e9 d  f6 F. m
set trade-record-current( list (timer) (random money-upper-limit))

: w' q4 V8 y4 |! G( i7 b8 u; x- u# w8 I* b8 R
ask self [do-trust]3 u- u# ]/ f# Y4 {$ V
;;
先求ij的信任度
  D5 b. w5 T: m. q* U9 [
% g. V8 f* k; z+ }if ([trust-ok] of self)
! j8 c, o  N9 ^  ?7 j/ F;;
根据ij的信任度来决定是否与j进行交易[
6 ?, z* [( y' [% ?# y6 P# ~: Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ ?$ l. l; Y! j/ e: X
$ ]$ _- x1 B' z% o[
0 J' n( d8 F* W; r
. _" M3 y& e" N' I7 \
do-trade
0 A9 |: l: t& E7 R

$ j) p0 x7 K" S  x9 t& ?4 Nupdate-credibility-ijl
( A2 G1 Z& }5 Z" Q; A
2 M) y) T  T$ |% H1 w8 |5 u9 Y. U
update-credibility-list% _6 A* r, _7 h9 t* T

) l3 N& X4 z  ]  Z; F# O% r) b' y! W. U& ~* e9 H
update-global-reputation-list
0 i( u( H9 l' s3 P' Y

( q6 }. X1 W) W5 C& _poll-class

0 e' B. x* |0 ~. Q2 @. i; a0 F+ }+ O" u1 O) W' E4 v
get-color

7 Z' T% J7 \; g9 r5 M/ R. E3 F' ^* r/ N: ~/ F
]]; b' I& z1 v" Z
/ c0 M+ \6 s) p& k$ Z
;;
如果所得的信任度满足条件,则进行交易
$ Z1 \6 A$ D0 Z% `6 R  w9 R. ?  Q4 ^9 T5 Y0 L7 k8 M
[

. D8 _/ W6 K" \% j7 Z2 L
3 n8 B- g: `: |/ @( srt random 360

) t7 ^2 ^' c$ l7 T  `  V+ l& k7 v3 K6 m" g3 a6 c
fd 1

; x; X: K5 w( l/ F- m* N5 C6 L- Z/ s4 h
]
! a  g) O# A6 L# b( E0 C. s1 N
( S; K  j  J" K" x4 k" C
end
/ F7 d2 |: ]4 M9 Q

7 f' x# u2 b1 U0 j+ h5 Z( [+ zto do-trust
% g2 |( A# X2 ]+ }set trust-ok False0 W  T  H- o9 ?6 \
1 R: X# t- q4 O! G0 M$ d

: c1 t) \# u& ]1 Vlet max-trade-times 0
% v! |, v5 A& [. jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], h' D, h$ W( x0 K
let max-trade-money 0
' ?# t, z1 Y% y  l5 M. U( \4 ]+ Gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ N) d( G8 w! S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! I0 c; }: x6 ^& e. Z

7 t& i9 [# Q$ \8 h: T
- ~8 ?8 Y8 [$ z7 G2 c
get-global-proportion3 ^: ]" m6 ^* ?
let trust-value" B2 ]/ R  D2 g2 i1 o1 c# q5 t
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)
, a* q4 r; j. N& V9 Z' o* j
if(trust-value > trade-trust-value)
/ Z% l: B* O; _; v$ y5 [[set trust-ok true]
" S. g, T3 c$ J9 U: kend/ f; z% I) {: I  I5 i

$ T- A. h5 v( q& r1 Zto get-global-proportion
( T' j0 V" O# t& M; n$ i  Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! C% I# k8 ]; j! b4 M) U
[set global-proportion 0]
' K+ `& M9 q3 G. J& C[let i 0( L- V4 ]9 ^) P' y" O! W$ G/ |
let sum-money 00 _0 H# v: ^. d1 L, \: [& K: w+ C
while[ i < people]
9 E, m: c  ?9 @  M' ?3 J[
  [% K/ r) C+ ]if( length (item i
9 o2 }8 n9 ?' `- Y[trade-record-all] of customer) > 3 )
5 |7 T  s: M$ }* j! l5 N
[
, A; _9 _* Y' `+ Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% F7 w, }3 K$ x' C) i]/ H2 _! C7 G, S6 j" k
]
6 l" E! W5 X! V9 U! y3 s0 clet j 0
  ~2 M/ U" j5 |4 S5 T0 ^0 ulet note 02 L% p5 b2 l( `  K7 R: V
while[ j < people]
& U5 |6 n* ~8 w3 |/ c[
9 C# X5 ~8 [9 b- |/ rif( length (item i
+ \2 o; N9 z/ E0 k[trade-record-all] of customer) > 3 )

. G$ F& j) q  j) m[) p8 w" \4 _8 {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% O4 F* Q; \& f( w3 V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* \) _& b2 H6 v# w% ?! M# |7 O2 h1 Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- l2 l6 i$ `# o5 A7 ?7 M]' k. V3 k3 e+ o8 d* }1 b9 _& X
]
# |: g8 o, w  a' Nset global-proportion note0 e0 G' \: f* r, o$ i3 x$ G
]
( [$ Q4 c( Y5 H; Dend' H1 L6 |  u' f4 I! G6 `

  g' k" Q/ n% v' z8 Oto do-trade
( {2 t; h8 D0 ]  q- x;;
这个过程实际上是给双方作出评价的过程1 v& Z5 a3 i  M6 r6 m7 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* a* ]. [8 z% ?7 P; Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* J0 m  D5 V) k8 @& @" r' mset trade-record-current lput(timer) trade-record-current0 B  C! e0 l% r/ e
;;
评价时间) ]' n4 O$ C5 c+ f* M# q! o0 }
ask myself [
1 X9 y0 B3 c) G% T) ^* l  h) ~update-local-reputation# U9 H6 E4 Z5 N/ V
set trade-record-current lput([local-reputation] of myself) trade-record-current4 K2 Z9 U0 S* q
]
5 T, I: s, N3 a% rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ x" Q0 W1 E7 r7 d( b7 \;;
将此次交易的记录加入到trade-record-one
5 V# n1 `* O: `0 a% g7 ]6 jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ `. L! x0 B# [" b
let note (item 2 trade-record-current )
2 i' W  s3 z/ iset trade-record-current8 M* n6 c% Q. w6 \4 K: A0 |
(replace-item 2 trade-record-current (item 3 trade-record-current))

) a1 o4 {9 s- i$ O9 M  }( l: y) Aset trade-record-current
) [$ |9 M7 q! F(replace-item 3 trade-record-current note)
# \* b) X! a% j, h8 S7 ~/ B9 H4 ~% Z. Y9 z
, l- Q8 A0 L6 P4 E4 l
ask customer [& s5 z$ m! }0 v& U- R/ c$ c
update-local-reputation& b+ C' w/ J! d7 N1 k# m9 e4 e
set trade-record-current
+ s* D( _& g& w- M1 r9 e- J2 e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 j# C% a& S4 M/ h9 Q$ V]3 H" m; x+ ]4 o% K- N
. g( Z( O8 ]; i8 n
; Z3 F+ @% b2 C. Q  {9 k  w' ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 A) z7 k& t, l+ [0 K

+ j3 k! _1 [6 x4 ]3 l0 J0 Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" g1 C7 _/ k8 e8 b" ?;;
将此次交易的记录加入到customertrade-record-all
1 D' I( b4 v& g% U% C- C8 uend# \. V( S7 Q9 `6 Z3 p! ]3 J
4 r0 d2 Z) U2 o$ U
to update-local-reputation: d7 R% ^' ~% {" X8 y
set [trade-record-one-len] of myself length [trade-record-one] of myself
# B' f1 q9 C) O- N" v; T5 ~$ j( f3 D7 z- R; c, p

$ P2 Q$ D, t9 a9 c;;if [trade-record-one-len] of myself > 3

8 V- Y4 b4 L  \; Tupdate-neighbor-total
# @+ m, H! a- l4 };;
更新邻居节点的数目,在此进行  l- d4 A( |6 f* B& @8 l
let i 3
, H! R* i( U& l0 l$ ~" }1 ?0 v# Dlet sum-time 09 w. i- F6 I; X3 K5 f
while[i < [trade-record-one-len] of myself]
  T/ y% x8 {- s8 X[( t; k+ u8 B! p# L, [8 `* e! i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; D" o9 K" ~% y" Aset i! c. z) A  k! T; \% T6 Y
( i + 1)
4 y( R( j8 V* O4 S
]
# `% }3 L) Q( X* i4 ylet j 3/ }" f8 B' p- g+ k6 I
let sum-money 0
1 p" ]) L  v8 c' H8 U% wwhile[j < [trade-record-one-len] of myself]9 \! m( G! A% |4 t! E) F
[* B( A" d8 C$ }
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)0 k% M. F: I5 f# z" c; E
set j  Q) m; e! }9 A8 T' r9 H1 ~: b
( j + 1)

& p% O  R* M2 G: f]
8 h, G$ B6 G( tlet k 3+ ?: s& u; r, j, i5 y& I
let power 07 O9 V) n. g1 ~* p
let local 0( K& F$ ]  B9 \- e, `* }
while [k <[trade-record-one-len] of myself]7 G- F6 S& W2 {5 G
[
& L  ?  b8 i7 @5 xset 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)
. f4 G8 {0 r5 q8 f1 c1 |set k (k + 1)
4 g9 U6 v( T; V' ^3 M& u! j# `* ~]
7 ~3 B- c; Q0 S8 Yset [local-reputation] of myself (local)
3 y1 w+ r! D% f! w/ P$ ?end# Q& b5 V- v+ P/ l. y5 V! @

' g7 J' @* S. q2 O1 d- F! e% rto update-neighbor-total) n7 b5 F7 J( N  y+ x: |6 m( [

. ]9 |. s2 t* R) oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# `/ U3 H2 Q5 u9 f* J* [: A- B3 B! C2 \1 V* f  W
+ R( h0 J$ ?0 q) G
end9 n0 X0 S8 O6 e8 v
! \$ D! i4 l, D( D" j: P
to update-credibility-ijl / J3 i  X( Z# _) ^3 X
; k* ~9 E6 `$ |2 ^. E  z% 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。- w. W3 S! @- O3 N3 [) f% p
let l 0
0 Z2 s$ g4 G; X. I- k  W* E/ g; Twhile[ l < people ]
- O2 p$ f, e$ x2 H( q;;
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; }# I( K  R2 `4 w' _/ ]
[
+ Q5 u  z7 H6 n  V- Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 D8 G9 G5 {. w% M/ Xif (trade-record-one-j-l-len > 3)4 f3 E  |6 \# |
[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
, T' u7 f: }  j$ w  h9 l/ L- G/ ]0 y* Nlet i 37 s+ s3 j8 Q  q- o, E: x) R
let sum-time 0. O# ?3 W% \8 E" p9 w
while[i < trade-record-one-len]
9 ?1 x) m% @9 f[0 {: @7 Z2 y, h# y4 A: S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 I4 e" {( q3 ?set i
5 l& o, Y) F( B  @: _; A1 i( i + 1)
. a& o: `# A4 V$ D" f
]
, Y; B4 T# s/ s6 R% ^4 Vlet credibility-i-j-l 0' @% b0 _5 }4 I. l0 |' |
;;i
评价(jjl的评价)
6 c3 u+ H- o2 P* E, E! s$ U  R. Rlet j 3# S5 X4 M3 P* n, m0 s" ~% P9 o& ]6 i
let k 47 Z3 c1 b* W" W& r: _6 F
while[j < trade-record-one-len]( U* f; y5 B+ k- U" Q
[7 L, p2 e0 I5 {8 D4 }4 H6 d$ v
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
% g( b2 m  ]) k% H% |/ }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)6 D: K' x3 q$ x* T- H" B
set j
& c9 G8 y. t+ O% b6 p; _( j + 1)
; C, g8 b: @- E) \% B) A' e* b, P
]8 \0 O& I" Q6 C# W
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 ))
8 X9 h* y  S/ h5 i( S; M8 i- T: d. d
2 N' y. \  j7 Z3 L$ i- q2 M7 J

" ~; @" [0 |2 d0 b$ @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 X9 I: z( B4 I6 @7 U; |& G3 Y;;
及时更新il的评价质量的评价% F  m( X; Z4 r9 Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: e' c" Z1 K' b5 yset l (l + 1)
, z( Z% _+ z- U4 {7 u$ `) n/ ^]# z/ E1 q5 O6 Z' w
end7 r* k! O7 z! I2 P% y) O# ?
& ~. V. |% P' l% v
to update-credibility-list  f1 y! c5 c* g6 z
let i 0
/ P0 c* f+ D1 u. g. Gwhile[i < people]' |2 q' k& J+ a
[) r7 N! C- u9 ~8 x9 g  Z
let j 0- O0 P: \0 \+ Q; _
let note 0
& G3 r1 F( u4 m* blet k 07 ~' v8 d* T8 f/ C
;;
计作出过评价的邻居节点的数目
8 ^; o& u- R) I, g9 Mwhile[j < people]
9 j& W$ Y8 ^& Y. ^# X* C5 D[# N6 |$ m1 `1 p, W; a5 r0 s7 s: T' @
if (item j( [credibility] of turtle (i + 1)) != -1)
$ l6 X9 y; F. V;;
判断是否给本turtle的评价质量做出过评价的节点
( _/ ~; m3 V* h' d* X$ Z' D[set note (note + item j ([credibility]of turtle (i + 1)))1 b6 ^. p( B% b
;;*(exp (-(people - 2)))/(people - 2))]
9 j: m3 G, ^2 `9 k4 i7 `
set k (k + 1)
) R8 f5 b# H3 ]# t& i& @. n) o]
7 l2 k! L+ d6 f# R/ T$ V" e9 `set j (j + 1)
& n. X* B/ X4 R' W( w; J]
3 s" h' |: |# j# l  Rset note (note *(exp (- (1 / k)))/ k)7 K3 S: w# y/ {" U
set credibility-list (replace-item i credibility-list note)
/ \( T2 K  F3 W; S2 Qset i (i + 1)
2 N' s8 d9 l, c- |+ g# L  }]
- Y9 [8 e/ B3 Q2 K6 mend! y. n7 O- h& C! i, t

7 \7 M  }0 p( L6 Nto update-global-reputation-list! Q0 m% h2 q4 \3 P! L/ i3 e
let j 0; ?  Q$ C6 T7 m7 }. K4 `1 D
while[j < people]$ i0 y; j7 y3 m- z0 r7 r* O% q
[1 I/ m7 d3 J/ z' `
let new 0) q" w. S* p3 _8 M  S* J
;;
暂存新的一个全局声誉3 q6 N& C+ H6 o) X/ G
let i 0
9 O% N0 t8 C* |! ~$ j' Llet sum-money 04 y& s4 ^% K1 \5 s- E
let credibility-money 04 x* v+ M# o+ e% ^, M
while [i < people]
$ A  k, _6 ?+ B- A' Y% @1 E- a; s[
. K) e# l; C9 ]4 s+ H# o( Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) y# A: v( Y1 rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 x. D7 N) a5 X$ [3 Hset i (i + 1)
; a- V# v  p$ i% h# i+ ]- o]9 z% L: Z' E1 }6 t, o8 g9 i) s
let k 0
- g7 y. B+ N- p; e6 Elet new1 07 Y& W; R( T& W2 ]
while [k < people]
0 p6 J4 _, A  {! i  V( j[. A( q9 B+ s9 _+ T% S0 ^( F
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)
4 [) w! n  j+ e4 ^set k (k + 1)
/ }6 i- h4 n5 ]& D2 ~" []
5 N+ J: {, \! S% Z0 ?; k& V3 X+ Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & `# {- v2 r  Z
set global-reputation-list (replace-item j global-reputation-list new)
. Q, }: \4 c1 c% m, _8 {set j (j + 1)* r% S" e0 ~) b. Z, r! f3 [
]0 f- y* b) M/ H  \. b
end
- ^9 R% `6 G  M5 Z; E; c& b3 w4 R
" T2 c( z/ f  J3 ]6 Z

/ x' J: X: Y+ K5 Z4 Z  Ito get-color
" {. t2 p) `  y/ d
& a3 b7 n4 p  |9 {9 ]! tset color blue

! ^9 W* D6 K2 m# e! Aend
7 {- K8 a3 o- |) R1 a. r% A% z6 C8 s. p0 c2 l2 H0 ?: ^! l. P
to poll-class0 G- x5 |( ^/ U% |! `$ b! c
end
! k2 V0 F( F$ l
" F4 N; |' q. S8 V# k% {to setup-plot17 R* d9 `6 Z. h' l2 R

/ _$ ^; y5 j9 sset-current-plot "Trends-of-Local-reputation"
" m0 q! }0 P3 I$ B. h' f! g3 K2 {
1 J9 l  ?) z5 m: \: [# p
set-plot-x-range 0 xmax

+ b0 w( t$ q9 r
# ~: l6 ~0 l0 {8 oset-plot-y-range 0.0 ymax
9 A/ [! R( a  V: }3 h
end, W4 g$ `) l5 b
5 _2 O9 c! x' Q2 N
to setup-plot22 F/ f' C" S+ `- n. V0 z

) `6 C. @( D* B# J. Mset-current-plot "Trends-of-global-reputation"
4 N; ]8 z4 L( Z- j

) o, Y6 v3 f: h2 H; Cset-plot-x-range 0 xmax

0 A9 }* p' t4 E* m7 S% R* s, F* R
" X* ?9 x+ E6 E# g8 c; x! {- q. B" B, hset-plot-y-range 0.0 ymax
5 C9 @, u8 m2 `
end
; Z& D" g& }3 Z2 t6 S* F9 g' j& M, V
to setup-plot38 S0 _- [9 A, t0 k2 U

& o* |' ~! Z( J7 \6 N+ Nset-current-plot "Trends-of-credibility"
) y* H) W. x4 S: _0 J8 N9 a) l9 D
; |: L: S7 E. H% I9 ^
set-plot-x-range 0 xmax
/ y" w% [/ G* K6 z, Y( o/ s" d
; U0 M3 H6 {+ a3 V& D6 h
set-plot-y-range 0.0 ymax

# j* f  n5 H3 `7 h. Q! Bend5 S3 b/ r  m, c) O1 {
' q( R# h0 Y9 o0 r; p" Q
to do-plots
% y" H, @4 z8 H+ l6 J& Dset-current-plot "Trends-of-Local-reputation"5 l7 e$ _9 @+ j5 i6 \; n! L  S
set-current-plot-pen "Honest service") T& |% Y' ~+ ~
end
0 H. V5 m; N6 J8 C' b; U
7 J5 D7 J6 V+ G2 t1 s5 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.0 p; ^  s, l3 y* E
5 r) ~# h2 v8 V! n
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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