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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:
1 ]; \/ u. O' r7 wto do-business * U7 d: p! L8 D  H
rt random 360
1 m8 ~) U5 Z% f9 K0 m fd 1/ i% Y/ }, Z, a4 v
ifelse(other turtles-here != nobody)[; e8 K/ e' b/ h+ H8 y
   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.5 L2 ?5 B$ f- g; f/ R, P& B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 m0 Y4 t  B3 |& I+ u5 T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, [' J; s5 V( x- q* X& z' V3 l5 r3 w   set [trade-record-one-len] of self length [trade-record-one] of self$ ?/ Y7 H( T6 R% W- @: h1 m
   set trade-record-current( list (timer) (random money-upper-limit)). w9 x! W) F4 f  N  G) I# O
0 F& ]( p+ d: b% `( ^9 J& l: c; i
问题的提示如下:
( @& w: B/ t! ^+ B# T/ D- O* g+ W" Y" K, i5 G
error while turtle 50 running OF in procedure DO-BUSINESS4 I, J6 Z8 n  }
  called by procedure GO
7 N8 f8 |; ^* h8 P) GOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 V' C, [  Z* P+ j2 j! J2 I
(halted running of go)
# ?4 h5 Y) O1 r4 W$ [- L: P7 Q6 P
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~~6 s! g* S8 `4 Z+ ?; Q' [" d" A" k
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 g4 x/ ]7 {: E3 uglobals[
' |& p6 [! |4 f3 P! y' b8 d% Kxmax$ _4 ^3 Y3 k$ K% H$ u" u( b
ymax
5 A6 [+ K3 o8 K3 ?, u  E! ^9 uglobal-reputation-list
$ p/ s( Q  d) i: J, `% `# W, q7 y
;;
每一个turtle的全局声誉都存在此LIST
* ?! b% q+ {3 `1 H- h  ncredibility-list( Y  P! I. ]0 P  S2 ]" C2 M' |
;;
每一个turtle的评价可信度
, Q* l+ G8 W$ {- Q  ihonest-service
6 `$ `$ C  o! M) {, d! U- _' t1 zunhonest-service- q' \% s; A; W3 H, I) Z
oscillation
$ A" T0 E; P6 }) g4 Orand-dynamic
3 e/ j; E8 t& j5 F- C. Q7 W]0 ]- M; Z5 }2 p3 Z
3 n& j1 ^4 A, m9 y: V
turtles-own[
9 Q, a+ R* s& D1 |! S7 Dtrade-record-all
" [* F$ u# i$ n8 w+ r. X" I3 `;;a list of lists,
trade-record-one组成
7 ]& c6 V' [/ m8 u$ g9 F9 E& k9 ytrade-record-one' ^' W8 G  S5 v. y8 ~* E8 {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; w" q( T9 v% G
3 i  A# |& R8 `0 Q" @! }7 H;;[
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]]
/ L' J, Y$ Q: C$ B" 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]6 a$ y( B( ~+ P  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
2 ~# z5 o1 _8 D0 E" |# Vneighbor-total$ h* [- k. w$ g" m" j
;;
记录该turtle的邻居节点的数目* P2 Q6 i5 t' ?* P# Q' k
trade-time
$ F% J- u, e" Y: c;;
当前发生交易的turtle的交易时间: q/ d  a* }1 L+ b$ I. i
appraise-give; g! x  e' |) r" u4 X* f$ J$ M
;;
当前发生交易时给出的评价6 t0 ^0 M( @' V; l# r8 m' m
appraise-receive, Z5 ?0 R0 O% Y  U- d" \5 H
;;
当前发生交易时收到的评价+ r0 L4 \2 _+ n0 H
appraise-time
  u0 V; q: M- R% n$ K* o  L" M! Z;;
当前发生交易时的评价时间6 r+ S& Q9 }( c6 p: K2 J: v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! v: S% l/ D- f1 }
trade-times-total: Q6 Q( D# s- Z( T
;;
与当前turtle的交易总次数
1 ^  A3 e6 Q; M  n. {( jtrade-money-total
- _! f, g7 r- P$ Z+ m, O) q( Q: p;;
与当前turtle的交易总金额. x, H; z9 ~, x. D) g' H/ ~
local-reputation
3 L- h9 i% s' M+ F2 Q, B" Lglobal-reputation9 W) ?. G) z5 W: a# v0 ?' s
credibility0 I  t. o5 b' T! }. d) X6 X/ W
;;
评价可信度,每次交易后都需要更新% s5 Z. K- x0 G2 u5 \) S9 n  |
credibility-all
5 D8 m0 m5 _5 l8 g/ c+ ^. w2 D;;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 v7 g& g0 K5 k4 `0 k0 }6 T, w5 }( k$ |3 z2 e' o- x
;;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0.59 O/ f- G! c: i! Z  F6 E+ z6 U) P
credibility-one
7 t+ o2 ?- P' L: u, W% S) X% i;;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
$ [5 Y7 q/ a; k2 z# F3 F! H1 n: vglobal-proportion2 M/ E8 {$ x, ]5 U+ @
customer
7 O; j* M+ _- w3 Z4 Rcustomer-no
# Y9 W0 R- G9 E0 Y. f  Strust-ok, J+ [4 \  @: j
trade-record-one-len;;trade-record-one的长度- Y  t8 G0 q, v2 B% E5 k
]8 Q$ C; }6 o  _0 T8 B2 p, D3 a) E+ }
+ ^, ~  }" v: N
;;setup procedure3 G) i+ r' K. o& G

1 k# U6 y) m! e0 O, b8 tto setup" [* j  K3 Q# O

1 l: V6 ?; c' C% r& bca
4 s- o! s7 B7 Y7 C

+ s0 F" t# L. A8 einitialize-settings

- {  V; f( b4 A3 c. R( q* t9 h. e/ L/ u' x$ l3 F0 Q  K6 R; o" p
crt people [setup-turtles]
1 q+ |' L( W6 ?

0 p. i( j) q& `reset-timer
( _/ e! [/ D% q0 H. b
( N, t6 ]- Q" c
poll-class

& y3 ~; T  Y/ ?' K( ~* X! l
2 e: c, \/ R) T' Y" }% b+ isetup-plots

. H, Y/ I8 g$ D7 V/ e' [) P
8 E0 ]$ v5 p% Udo-plots
% N) f; s% L% r3 q- M
end
, K! M4 z# T8 h
+ x! X% s: U( {: \9 j5 P" R- oto initialize-settings3 s7 }9 W: A; r1 U* H4 Q/ S

3 f) Z9 W- I: ^- g! b8 }set global-reputation-list []
& W6 i% a4 `8 w; A2 i

0 c/ K3 P! u( K. g- zset credibility-list n-values people [0.5]

/ K9 c; J* [/ _- f+ L" `( y' O2 U* \) x: |% P1 y9 L" K" m& P+ z+ I
set honest-service 0

' B5 W+ Z# M: |1 F! |/ X8 }$ B! N% ^7 d1 J
set unhonest-service 0
3 F; w7 o: R8 w# M) n5 W
. {/ [: d; _0 |& \2 f
set oscillation 0
+ d/ c/ ~( l  H- ]

( U, I2 [5 `* M3 F+ tset rand-dynamic 0
, `( I. T7 l$ D. W! q4 F* i" t4 v# ^
end
, H' b. \- d; Q
0 D: Z0 i8 \5 t- p. }, h, G* t2 c. Qto setup-turtles
3 l# e' `* H. y! f/ rset shape "person"
* y( f4 j! C) L2 ~6 ~setxy random-xcor random-ycor
( l" q8 ^: y: x% Y* R0 g! T# qset trade-record-one []5 b2 r! j. @/ h# h6 j

! \; U4 ]5 [3 o" h1 b7 |9 Nset trade-record-all n-values people [(list (? + 1) 0 0)] 4 }4 N- d8 l2 R- ?7 L) i
. p- l" m: O2 L% \: R
set trade-record-current []9 c4 {! r0 \/ @5 s
set credibility-receive []( g, A9 ]! V4 M
set local-reputation 0.56 x; i5 l, i0 t) F
set neighbor-total 0
: u. |$ I) \% u9 |" v( Uset trade-times-total 0
/ w# v) s0 R$ l' ~, T! J2 e' rset trade-money-total 04 n% ]/ G7 @* G0 B. m
set customer nobody& s4 p1 v+ c. W+ l+ x+ x
set credibility-all n-values people [creat-credibility]
) Y6 M# L7 W) x, vset credibility n-values people [-1]  d% o# x7 V* K+ v6 \1 f
get-color$ z5 \9 a5 f1 \* w# O6 Q
. q- G' A# n9 Z1 G( Q1 P& Q
end
9 i! k5 n0 A/ G4 h/ z" i2 h, e( K3 E( U4 c
to-report creat-credibility0 O! f5 v4 d7 a) L
report n-values people [0.5]
9 M. c  D* j, C$ T* E0 Lend
0 j; N9 n6 Y3 |4 m2 a4 W$ D. {2 V9 W
to setup-plots7 Y5 r% X" A; F4 X1 K5 M
3 s( y: y8 _( y  k& ?5 k6 }
set xmax 30
  p/ _. e, w$ v
; G8 X: W" o  R  y5 J' L
set ymax 1.0

* L# x/ w$ v# x4 C. T6 @
( C" B/ h- |" \" n! _- V0 j. _clear-all-plots

. Y* h( ]& s$ s4 j
4 n4 t% s# m, w6 c% n9 \- b! ysetup-plot1
5 K' l' o3 b& g3 I# V
1 K% n- e$ ~: s' d" N
setup-plot2

) z' U$ W, Q6 c) P, H( U( ^. n) _3 z4 [: a. q* V
setup-plot3
! S, K& O' w5 h+ p7 n
end
& _& I5 I" W7 A- r, p, L
( g+ h+ I7 ]# Y, p( O8 q7 f. C/ A;;run time procedures$ d8 G9 w2 d, b& N

$ ?$ }1 W4 h5 D4 b% uto go; J  q# o9 X$ @4 N- N& J8 @
$ n7 X+ L- z; L4 ^/ |: M, g/ D
ask turtles [do-business]
2 {7 e6 Z7 C5 n, `. p
end# I) r+ ^1 V; T3 G. F( B
. ^& d8 V& X( F% }" U& I0 p/ ~9 p; K
to do-business
) d3 _( X* B- g) D; E/ m

" E: k' A0 A, D* ~2 r( l7 {/ }7 j- `) U( G2 t$ I
rt random 360
2 N+ q/ M+ ?; E, l( Y

4 o" S9 D; [0 s# @% M: |9 H7 pfd 1

6 |& M+ u) }3 y1 w6 s+ `2 t3 y& ~' F
ifelse(other turtles-here != nobody)[
  B$ L+ K9 s( z( S! t
; o. b& \6 N# j) u; ?' Q- x
set customer one-of other turtles-here

% t# W1 T5 h  r& C" P
9 z) D5 J: d6 T;; set [customer] of customer myself
* v2 o" j; C4 e1 x% c6 h4 t
9 s5 c# z( ~! c) B
set [trade-record-one] of self item (([who] of customer) - 1)
1 T* k2 i3 n* f3 w[trade-record-all]of self  Q) p. s3 Z( m7 ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ Q& S2 o4 [4 n% X: Q

  d0 f& R3 [7 c# n* I. hset [trade-record-one] of customer item (([who] of self) - 1)
( H! d- o9 V. F* E* G. U[trade-record-all]of customer

- g* B& A' l0 m
: j8 N0 J2 _  p7 wset [trade-record-one-len] of self length [trade-record-one] of self

# w' ~$ [' {* }2 ]
; Z( m" H; P$ D" b7 B. T4 P7 k- @set trade-record-current( list (timer) (random money-upper-limit))
: x% ]% a) Z6 [( D
6 \- n  E' F7 C+ }
ask self [do-trust]( c3 `6 N: s2 X& f6 O
;;
先求ij的信任度
5 N: }6 p$ Y( a% |4 ?6 Q$ g" }& Z
3 d# X/ |8 ^  V2 ?* ~- K4 g1 jif ([trust-ok] of self)' m% V: F& C1 M! j# @
;;
根据ij的信任度来决定是否与j进行交易[9 D- W9 ?5 h5 _& x" {, W
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 |$ {( {! G  ~, Z$ [1 [3 k
0 u. O! |  E9 C0 p. v( ][

0 A/ t. u8 Q! A
# A8 ~: ]; t3 e4 x( l+ O4 z  `- h# ^& qdo-trade
1 o4 k+ i) y  J+ A. c8 e
. K! @- Y8 R8 T, G
update-credibility-ijl

0 y2 F: [( R3 V( Y; ?* Y
* [- w# _( B  ~$ P  gupdate-credibility-list% q% n3 d7 N# k  a6 R
! g0 A! K3 ?/ i4 X& e2 ~: h
1 P& v. v. U! e. u: [$ c4 l
update-global-reputation-list

( m3 z( w* L  i8 |9 y+ m! _  P: n6 U' f5 D- A" p
poll-class

( w3 v: n* h1 `2 _9 {; g' l' \3 n% }* Z
get-color
9 r. }" n/ S; z4 K6 }

0 O5 I5 I2 k$ S8 h/ L  R( d]]
6 a! @1 x$ S8 i6 w. k, K7 R+ N5 s  }7 V( X; p: n' Y
;;
如果所得的信任度满足条件,则进行交易
1 ~( H. g" t/ D' e7 U% W# w8 F8 z
; z' ?1 y3 c( z9 A[
0 B* ~8 Y7 T: M% w5 q) \! n
8 [. O& G. O0 [9 N: F
rt random 360
  s$ \8 c* R  ]" U% u' d
) j0 C1 e* P& {8 I2 R, R
fd 1
5 U+ [% T/ w! R4 F2 E; Y

" ~  v; D+ Q- u" E, b]

1 V; h- _2 A- W( N: l- m
0 N& a9 F/ M* @# \end
* ~" A1 m/ \% c/ v8 `3 Z9 S, j/ A
/ d8 z6 R" x9 Y
to do-trust * I" z( ]' @8 P* o- O: @
set trust-ok False
1 N6 v6 C  t& X" E, N3 r- s$ _; p& l; r8 }
7 x9 v. w" {$ z) @  o) x
let max-trade-times 04 |# o" L/ k7 P8 I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 C+ G) v$ a- `$ G) j/ Hlet max-trade-money 0
; h( Q) W) X0 r. ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ A# |' y0 g) e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ X4 i7 p( f7 q1 `* z4 y: c* u2 V

( Y& }1 A2 |* d1 w. i

: `# v' ~+ b, l' Pget-global-proportion
1 x2 V: o' s* C3 W" X2 g" t8 y' Qlet trust-value
8 d! {. g7 P& f2 f7 nlocal-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: r- \0 c: n' [$ n; g! Jif(trust-value > trade-trust-value)
2 K; B+ e9 A/ Z1 R$ s[set trust-ok true]: P' q- [9 m* ^2 n
end
$ z% D: R2 I' r
) G$ d* `: d+ Wto get-global-proportion
& M$ ^7 n3 C* o: H% _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! f& u& `1 l4 q! ~- F. @$ K
[set global-proportion 0]
8 G7 H+ b; t# i/ X9 a  \[let i 08 h0 E7 I; R: M" e7 j
let sum-money 0$ F& w3 g$ p1 }9 S; F
while[ i < people]
2 m$ W1 F! z( L: J5 Z3 F[  n0 C5 e1 A9 H+ q  {% u
if( length (item i# R+ i. n" S+ x. f+ g+ r: r
[trade-record-all] of customer) > 3 )

1 F9 \) @2 ?# q. X. ?3 e[" A0 {2 o) r9 f  D7 F/ ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), B1 q  o& S; V7 K" I
]. G% M: n( X8 J
]
% R9 ?. S+ _3 L% n. ]let j 0" A% v1 M' g. i: J3 B. n! ^
let note 0! T, k# E" x( R; _  a
while[ j < people]
1 [; n$ R, ^2 @1 n- F1 v' D2 P3 O[# i# R0 R9 \- T3 T. W7 b
if( length (item i$ r# k+ M5 k  Q
[trade-record-all] of customer) > 3 )

/ S- Z4 n" h( P) [[. ~0 X, x& S; n$ m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), j" [$ P4 e- z( m/ S" V: [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" `" e7 D0 ~* `* u6 X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 x8 I  G0 w/ _], q' O% [" p5 Z; K; q
]0 T' b* s$ e! V
set global-proportion note6 ~9 X3 G7 Y5 m, g- D- U
]
8 B9 c& I4 G* o7 q! dend  }  h' F/ P0 h/ P

% q: [  u4 R9 w6 b6 J) Ito do-trade
) [2 A; a* j% ?7 h# Q$ ^! V;;
这个过程实际上是给双方作出评价的过程& l# E- r& ]) l6 ~* s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ b1 i( f4 \0 r8 n2 Z. L' \9 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 f' E/ B! E- L7 d- {8 \
set trade-record-current lput(timer) trade-record-current
6 {2 R5 H+ z' t3 v% L;;
评价时间$ l, M. R8 P# V- F# w4 x$ R
ask myself [& r* ?- M* C5 a' `; R
update-local-reputation
$ f- }, |8 \8 Hset trade-record-current lput([local-reputation] of myself) trade-record-current8 B; K; K* v' w1 e8 J  i$ [1 {% t
]" [. O2 D  _: q! B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 R. B- v) ?4 b" r
;;
将此次交易的记录加入到trade-record-one8 S8 U0 a/ P; Z6 n. F3 e& d
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 _+ B0 q$ D0 e8 s+ @/ C/ s2 u2 Qlet note (item 2 trade-record-current )
2 R  H3 J" D/ y: [# dset trade-record-current0 u# P! v4 H5 g6 z# Q% p
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 H2 g9 r- Y' c3 ^* L* j
set trade-record-current6 x/ Y& i: {0 D! q6 ^. m  O" z
(replace-item 3 trade-record-current note)+ [$ Z9 U9 D& J8 u( T5 t7 O( b
; a7 J( T+ ~+ Y2 m7 T
+ N% k5 b+ {: f5 K! S3 z4 p: C5 C
ask customer [7 ]$ u' W5 A1 f
update-local-reputation- m) C# P, r5 v+ W* b3 y$ w( F2 S
set trade-record-current- [& O* @" Z* B* k, k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% }4 I2 E; T  X- P]
" Z; `2 P# Z) X' ?, Q2 a' |( i$ l% t; ]0 D8 e

6 m& i! J1 c8 ?! v1 G" v/ A  ]set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& C# ~% q- Y3 u4 n" Y  f
- Z7 v: Y9 W5 o3 B6 H- x- j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 d6 r0 H$ J5 V' J;;
将此次交易的记录加入到customertrade-record-all" W& X: A$ w# J; D9 c8 Q6 u, Y( Z
end
5 y; O6 S! O: t" x  |
& o, k) G$ a3 b3 ~% |0 r* uto update-local-reputation
. _" \: o" ]: Q7 Q# T. W, G: lset [trade-record-one-len] of myself length [trade-record-one] of myself
- O& _& b3 a6 @* P7 i% _' l+ k  q1 |* J  a; `

4 Y$ w+ [6 Y+ h  {) Z;;if [trade-record-one-len] of myself > 3

* q3 ^* v, K6 F- v6 b# d. Cupdate-neighbor-total5 q+ X6 f7 p8 _6 C
;;
更新邻居节点的数目,在此进行& @/ L8 R& k( ~% E! C7 e3 `
let i 3
0 p  y* @3 u$ [- C4 Ulet sum-time 0
, [8 g9 u  l4 M3 a. P. \3 pwhile[i < [trade-record-one-len] of myself]+ H: w0 Q* U) l
[3 n; B$ k8 C( x6 o, K& A) _# {4 n
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" u4 e" g0 b  x( v) ^  c
set i
/ H9 S% _) U# i% t+ }: f+ J( i + 1)

8 x' i2 L! R+ Q; L  y, e]
% d( ^' v. a3 Clet j 3
4 \; ?" w) B. o; Q0 Rlet sum-money 0
! X/ V: w( C1 dwhile[j < [trade-record-one-len] of myself]3 L8 q( p( ^" e, @. j
[
/ V0 J; v4 F' _7 ]8 `# Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
' o1 _6 S  t% }( Y" M5 s8 L6 Xset j
0 V2 j! B: \! f; d' L) b( j + 1)

* p' C7 v4 u! E  Z]
! t" q! ^& r4 ~  j2 Xlet k 33 L. o6 z8 g! U0 B! F$ C: ?$ {
let power 0
% x/ W5 @5 @/ }8 rlet local 0
1 f9 l* T# w- S$ [1 t' rwhile [k <[trade-record-one-len] of myself]- I- R) U9 Q2 U
[. u4 i' P+ ^1 M  s8 Q- }1 n
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) 6 y( U; K$ j2 Q( [
set k (k + 1)  u; U7 h! ^' H: ]9 U! F% s
]; t5 a+ O( T( i4 X. T
set [local-reputation] of myself (local)
8 d- m4 g5 @0 oend" B9 n5 Z# h6 w
8 d( Q9 ]4 [  c5 p2 n
to update-neighbor-total
! ^( c+ K9 v. @# d9 X; G# E+ V
2 c; S2 v* Q/ s5 T$ D/ Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 o9 n9 C) S  }5 m! A0 \
" j  y8 H" s. h0 I* s7 Q

9 u/ t1 \; ~, ~9 Pend$ T5 ^; }' a6 A& p5 r
9 E0 O! F  S# ^9 v: w& D3 \3 ^
to update-credibility-ijl
- _' D6 g& s8 p1 O1 W- a! ~9 o1 O! J5 j3 ?0 T: `2 _! N1 m. s
;;
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。4 q7 G% U& P* o  ]
let l 0. j0 _$ z4 V" S; q+ o
while[ l < people ]
) V/ S' l" q1 @. l6 ^0 J% J;;
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' q3 A" ~8 F6 S  C[; z4 C1 o6 U1 X8 p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) q7 A7 S5 P+ b6 V2 Lif (trade-record-one-j-l-len > 3). S; E9 Q4 f! b! y6 m" |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-one/ k" V* s& d2 ]) K
let i 3
  _% Z6 z% g$ U- R7 i: C/ Mlet sum-time 0: N4 a6 o+ I' I/ l
while[i < trade-record-one-len]5 [6 b' S% A: N: x: B
[
0 m2 m- G1 ?: A% L& Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: R, Q% j' y, E2 D/ w6 ]set i
  F' K) |( \) b( N% Q8 G( i + 1)

( c, T/ T: g7 N2 p) k, ]3 i+ r/ U]
' a8 @- Z+ z6 W1 Z! \5 Glet credibility-i-j-l 0
9 Q9 }9 |8 M3 ^4 Z( v# ?;;i
评价(jjl的评价), r9 Y0 j1 S- _& u5 @
let j 3
) u8 i' H# {$ t& k' Z/ o6 Jlet k 4  g& Z2 B; o2 W8 x
while[j < trade-record-one-len]
6 Z, n+ f2 I0 \[5 W% p+ e. C  {. I/ \9 b. S
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; I2 V% P& a8 G1 m' i, 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). @# m/ e: H4 q" r
set j" l" C) X0 @" F+ R( [6 e0 t; w6 f
( j + 1)

: k2 H9 H3 N- ~* A, C]3 f2 J# E! ]- I9 X; O  c* b5 m
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 ))1 C8 {3 G3 P% Y9 L
  J' Y  E4 D9 u' ~5 w( r

: X+ B! b1 V/ O5 @* clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" {% }( R8 R( Y/ ^;;
及时更新il的评价质量的评价- b$ h# |8 J) w# h/ F. H9 Z' U! G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" P# f# g  }! pset l (l + 1)
7 Q: Z1 B( F( x# F* v3 u]
; w3 Q+ P  k5 O; `: Tend
1 L9 p& d5 F" F2 ?+ f: G: {
5 E4 ?* t" }+ w# rto update-credibility-list/ \) q* G9 S+ C/ G0 J, r* L/ Z, b4 L0 N
let i 08 H/ P9 {& Z/ j. r. p# o- n
while[i < people], [. w1 c% {5 X: [) N4 _
[
2 y% X6 ?& U9 ]0 d9 elet j 0! ^% G4 e8 q0 _" f* L& x& l
let note 06 {$ F) w# ~1 m8 p$ S& M: v
let k 0
; c' b0 a! U3 V: n* D8 q) o) w;;
计作出过评价的邻居节点的数目
9 h7 q9 v" N6 |0 U1 [while[j < people]
* \% x; E# K& h[: `9 ^# r- w9 ^# }4 Q4 W
if (item j( [credibility] of turtle (i + 1)) != -1)
" G( W, m) r3 x7 c( l;;
判断是否给本turtle的评价质量做出过评价的节点  O  m" l' d0 i5 w
[set note (note + item j ([credibility]of turtle (i + 1)))6 c" H! X# A' w# d4 a- i
;;*(exp (-(people - 2)))/(people - 2))]

4 R3 h! w9 r( B# M: Y# Rset k (k + 1). P& f: `' J4 c$ j+ [7 ]/ {
]9 E4 n) W! b) [4 D
set j (j + 1)
, l2 p* {1 j# E6 x1 c]" v: X: I4 b: ~
set note (note *(exp (- (1 / k)))/ k)
; V4 b# }5 |4 W9 h( qset credibility-list (replace-item i credibility-list note): G  L' h! T' {% w$ E+ i  ^) L# m* O+ H
set i (i + 1)& G- ^2 C; |9 q. G: }
]2 D9 u1 e6 i; h" W3 w' w
end
$ i8 t$ [% C) u0 o- D
& A3 Y# ?, `3 V; t' x; Ato update-global-reputation-list
+ |+ D4 |9 }" Nlet j 00 _2 v" z- L* V, [, M) h
while[j < people]! @9 }& {) U8 S$ Y( Z6 `* b) h
[
2 W8 i" z" l# Q2 i% b! t; \" ylet new 01 Z4 u4 w: N4 |  m
;;
暂存新的一个全局声誉
$ k, S2 M* v6 U( \0 Y5 mlet i 0( \" h2 e  z% X2 Z% z4 O8 G6 ]
let sum-money 0- ]7 N& N7 `! V
let credibility-money 08 z8 j1 \  O# I# a
while [i < people]
* X+ s" c( w# }3 q[; Q6 N" n( ]- ~8 w  F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% m0 i/ [' b! q0 p- Z5 W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! r4 J1 d) T+ Z8 [6 |5 n1 D1 Nset i (i + 1)
2 }( H: g; e+ L]; T" N) ]' ?7 B8 u
let k 0
3 X" R8 K: ]4 }% H  b; T) glet new1 0
( W5 [: a" ~2 B) N  F; ywhile [k < people]
- ]2 ]: b' Q' f5 c( K9 N' n2 C[
9 n7 C" S  Q+ D  U; O. e9 Sset 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)
& n; O0 V6 t5 w) {: M/ S& Rset k (k + 1). s  g% p: ^5 }, i2 d
]
) V! b1 L/ U( p" @- U  G3 K9 u0 Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 m/ s  [8 Y9 s" S8 d6 ~' L
set global-reputation-list (replace-item j global-reputation-list new)9 F# T5 N/ J- c' h
set j (j + 1)
& Z7 X. z0 V( i+ L' X]
) L: a) x6 A% c7 ]5 M' s8 }end/ Z; R; d0 A7 a' @) a
& n& W+ i" Y0 y' A9 a# r

# W7 L- s7 H' q# g) o' r4 ~6 n  {; p! S& D9 @2 O' R2 d
to get-color; n5 c' F7 j8 f$ m

1 `% H" B/ I0 U% [set color blue

5 {  K0 P# W% n. {$ c. Uend: Y8 N& Y  T% j9 @/ S( d

5 C5 c1 H) S% [: @+ P& K. G7 ?to poll-class
7 f+ k! W3 _+ Q0 g% _; _% e1 ~end
" ^2 f$ T' n) w5 L) f+ w- H$ y* o% g$ U3 M
to setup-plot1
0 F2 V. p6 ]5 f7 ]( q5 l8 a+ B% g/ n6 U
set-current-plot "Trends-of-Local-reputation"

3 K8 [: o7 g' G7 v9 ^  m! O* l% J. T$ H3 C% D+ A4 N2 b5 e5 R
set-plot-x-range 0 xmax
0 D- e. p+ X7 P& s1 |; w6 U

: \* t6 m0 K# b, ]9 T; k/ A% Bset-plot-y-range 0.0 ymax

; D" f  m3 f+ O, G0 z* E8 `end5 f- m8 `9 s7 `& p. |; M8 C' x0 c) E

4 H7 n! Z5 _9 [5 F6 x# ato setup-plot26 r0 s4 m2 G6 L$ O; M
* C. l* @/ H$ ?' f
set-current-plot "Trends-of-global-reputation"

0 I  F' w) a1 `( s0 v- g6 \1 |  D
+ m$ O3 ?2 ~$ e0 }; @, u3 A. eset-plot-x-range 0 xmax
; V/ E+ \- d; ]) @
5 _# G  U0 A* ]' s( ]
set-plot-y-range 0.0 ymax

0 h: f. k1 ^% W! r0 a& ?' x5 mend
) \2 {, Z. F% o3 \0 R% c6 S4 ]5 J; D
. X3 D# r, K- v- q$ Q8 Z+ X- \to setup-plot3& ^2 A7 l' i6 I

4 o" V! H  H! c# B) P0 Dset-current-plot "Trends-of-credibility"

' R1 j7 \& Q2 }- A( D  z( E# A( e! |% X4 z9 \) A
set-plot-x-range 0 xmax

3 e) j4 m1 S0 r) _% y% x3 l7 J" E3 [& t* D/ S5 v2 D6 Y1 i
set-plot-y-range 0.0 ymax

: @3 O  u" [6 u% g  u+ jend
) e2 s1 D% O; d9 A: c. A0 i4 L. K/ @+ U6 b! D  s
to do-plots
0 {0 M" ^1 r; M& H& O) K+ \! gset-current-plot "Trends-of-Local-reputation"
  \5 O+ Y. `4 O0 v: o) W" e# zset-current-plot-pen "Honest service"
, w3 f+ f+ S3 H0 |  R4 iend
# b& {) I9 P% \1 t9 M, G
. X9 O/ N* n) I, N[ 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., W9 L5 t5 ?6 d3 A$ u/ F! e( d

. R* J: m. |; q! u' 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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