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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:
7 H0 c0 f- H$ t$ Zto do-business 4 Y/ c( D& D4 X8 q. y
rt random 360
3 M" G+ k7 }( b! ~5 P- t fd 1
/ v1 H4 \; Y+ l! y0 _0 p  q! p$ M1 q ifelse(other turtles-here != nobody)[% N$ N% _5 _3 m4 G
   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.
6 X% q  x' ^# f1 s! p   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 e1 u. F+ ~2 a0 R% w$ [, Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# I# k$ `5 b* R& [6 S
   set [trade-record-one-len] of self length [trade-record-one] of self1 t7 M6 X* y; A; B7 R2 Z7 p0 ]5 a% a
   set trade-record-current( list (timer) (random money-upper-limit))
3 |& h' N1 m$ M, M2 Z6 T3 Z
2 f7 H' n5 |  O( |  L( D问题的提示如下:
8 N  E$ @: z) g9 M/ Z5 c& a, T' `
) x7 }* s1 u1 v, Cerror while turtle 50 running OF in procedure DO-BUSINESS
& w( V( H2 U5 r' H& B" ]* ^  called by procedure GO. R' M) c) O# A5 _% X5 ?, ?- Q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( y) J+ L+ y$ W& D' ?
(halted running of go); I3 Q9 B* q3 _% Q8 f

# W/ M0 C8 S( ]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~~# o* L0 D8 `7 N+ }) q5 ]+ S
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
+ n. S; P7 G3 l: K4 J  `globals[
2 w5 ^* ]) t( J0 E7 ~xmax+ V" {, Z9 [, A: V! L' j. ]
ymax5 R" Q. J% `& w  h
global-reputation-list- ~- W$ W! P% ~6 U  P+ }

9 b8 ~7 P" _4 j  n7 \, r;;
每一个turtle的全局声誉都存在此LIST
! O7 h2 ^$ ?* O7 [1 @. d3 G+ {  c9 [credibility-list
: \9 C2 W& `5 u8 u  m; G;;
每一个turtle的评价可信度( z" A& M4 N: h# m4 W2 X' O
honest-service5 l, L# Q) h" |
unhonest-service
; _; d0 F3 ?! o( g" N7 c: J- xoscillation
" V; L8 q/ k+ u/ D2 @. Prand-dynamic$ @& {  t( z! _+ I
], h$ W4 j3 m, B! l8 x- R7 Y

( ?$ k/ |1 B: O  {) i: j5 Aturtles-own[. U- i: ]# a8 V3 ^' r% h
trade-record-all0 n8 {. M( Y6 B8 J4 F6 F
;;a list of lists,
trade-record-one组成
* t' r; P. y3 `' o" Strade-record-one3 e/ M- \" J( x7 L0 s
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ Z) g& O0 ~3 i5 [% R4 y- u6 K, o6 a
; L# x" @% V& @' }/ b5 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]]
5 D$ z5 R# ?& v5 Qtrade-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]
* F4 H" |& w8 |; E+ V0 I* I) Hcredibility-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
* U0 \- \+ j" U! `2 R: N" ]0 g* @3 x6 Dneighbor-total
5 c7 P1 O2 p, H$ G;;
记录该turtle的邻居节点的数目
* r3 r5 K  x+ k* I7 f/ J% mtrade-time% [7 ~: E$ P. w2 ~
;;
当前发生交易的turtle的交易时间
1 _6 l' p% f* S  }appraise-give
; |$ P3 G- o0 b7 Z- c;;
当前发生交易时给出的评价
! e4 O2 \/ Y; i8 q# sappraise-receive
& f, j' K0 s$ @$ ^2 W8 C1 M;;
当前发生交易时收到的评价" L# J- h4 s/ Y
appraise-time0 Z- C5 N5 T% K; \
;;
当前发生交易时的评价时间
- i1 M6 g2 T; Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* k5 f* ?5 {9 m+ k- k
trade-times-total
4 `) m; Z! [4 e  U/ Z) J5 R;;
与当前turtle的交易总次数' _6 I+ f, X# y( P& ]9 {
trade-money-total
2 ~& ]/ H" F  y! U& |;;
与当前turtle的交易总金额
4 w, i3 @  b) W! Q- n" H7 e- E" rlocal-reputation0 U) Z) D2 d# X1 J1 X% z6 ?6 J
global-reputation
. k+ b1 \3 u+ @7 p: |# o! k- Ncredibility9 u, o) L1 I5 Z# ^  ~+ Q/ v7 X
;;
评价可信度,每次交易后都需要更新8 R) |5 v, ^' ]; [. w
credibility-all' n' k3 ?! k0 _: x% n1 A
;;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
7 N3 {+ R+ \# ?, o$ t% T
+ C% ~6 M" ~! e# i0 [5 b;;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
( R' f4 F2 C- Z& m3 l$ j; S$ Mcredibility-one
$ H' s& U+ U0 w" q;;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
4 V* E( [8 m, U5 uglobal-proportion7 ?3 _. u; r0 z6 D
customer$ D* d0 h& d+ y
customer-no/ O+ K" d1 ^6 O( y- p3 I% I; S
trust-ok" A( B% d: ?" O* t  \
trade-record-one-len;;trade-record-one的长度6 C" m' u: h  r3 R
]9 y* S  n; d* {6 y

7 j) K- z/ d3 `2 c;;setup procedure6 L/ s- Q! m0 M" I; v" l$ p: D" Z
$ ]8 y8 w* q3 @3 n
to setup
+ @6 ~: n7 e9 p( O1 X3 l/ X; c4 ^$ ^! r+ o+ V
ca
  X; P( F: e# V
; K% M% }( h, T+ w7 y. j
initialize-settings
2 X2 K% y6 Z8 P% z1 M/ S% e; f; R
8 Z/ c4 g$ |7 U4 h/ j# J; b
crt people [setup-turtles]
1 b, @$ [, W9 K4 {2 K( V
" j+ u  h# A: W3 \# p* @
reset-timer
  n, z8 @/ k% `) X( Q
# l5 M+ M) |( Q2 @  L, R& g' ~
poll-class

6 O$ K. J! k) j
  c/ @2 a9 K/ O( B# D  Tsetup-plots

/ _" X. y5 U9 Z" V5 u& n! }7 G1 g4 E0 l+ k
do-plots

& P5 b0 K1 r) Q# v+ q( s* h. Nend& {) L: `5 M' a3 s2 g

# ^0 O0 |0 p$ R6 Xto initialize-settings6 w- S+ X) r, |8 f& o6 E  u
+ c2 f8 o' I! y/ X
set global-reputation-list []

; e( p. I3 u2 T) F% ], K# t% ~: t4 h4 l- f. a/ |
set credibility-list n-values people [0.5]

$ @2 ^8 c6 z* A+ x, s# C
( J/ }2 A/ Y0 p+ K$ Qset honest-service 0
: R" g; ^' M: f( r% E& e% y

3 W$ B! C  M2 ?$ e+ Lset unhonest-service 0

5 N3 B" Z8 q9 E- K5 ]9 o4 ^* b/ R/ x( W3 h- F# m( b9 U3 X
set oscillation 0

" ]! o& P( k) q% W" Y% l1 b/ s- U4 |3 a$ D2 h- D+ Y6 Y
set rand-dynamic 0

1 x  X/ Q& d/ l" m  {( x, q* A6 send
8 {$ `  d: h. Q# l9 X& j* p
1 o1 t) w+ H- t8 j  `to setup-turtles
3 Z$ P0 w  \1 Hset shape "person"
: D) E/ K) v% }% ^setxy random-xcor random-ycor
+ Y1 h3 P" O& c% Zset trade-record-one []9 \( Y( Q' M; e# K# Y
! E. h* Q$ ^2 k: [! \
set trade-record-all n-values people [(list (? + 1) 0 0)]   K% l% K* J, Q2 @; S: I
: _: b- R0 l' F
set trade-record-current []
, I& T$ x, x5 m$ s  f8 w. R# N% W0 wset credibility-receive []
4 {3 |2 y* e6 W2 Zset local-reputation 0.5
, p, L0 j3 C0 u' Fset neighbor-total 0
: O% Y; I5 ?; Q- eset trade-times-total 0. |0 X0 B% Q) ~8 ]1 J' ?0 p
set trade-money-total 00 D) h" ?3 j) j* F5 o) v% s
set customer nobody
: X2 ^5 i) t# }8 K0 Pset credibility-all n-values people [creat-credibility]: X2 b& a" n- U+ R' P  m7 J: V- P
set credibility n-values people [-1]0 C8 s: J) _/ v- T3 B  V
get-color+ R& c: r! L$ ]' Q! i- F$ K  y
$ H! V( e) p# K( R% O% m/ B
end: Y+ o8 r, V, r6 U8 p( e
2 {+ ^$ h. |( \
to-report creat-credibility. A  F8 I. Y$ L8 }1 m9 V
report n-values people [0.5]6 P( B$ Y  e! j0 y- R3 ^# d, @* x
end
: N  N. g( W1 @0 `
# M, p: ^+ |  v% x% r% [' ~to setup-plots9 Y* R) v5 v6 K' b9 Q3 r) @( c' A- l

  S5 k+ ~" n, ?9 Dset xmax 30

% A: H9 v( |& l: }/ s$ M
7 @( B  m% M' V" ?set ymax 1.0

3 M4 n0 x8 i5 M7 t* m* F2 g
+ R! a2 q3 I7 F# t% X; @6 }, \2 ^clear-all-plots
, p/ ]: c) u7 x' G

( l1 ]5 I' B9 o6 F: A5 \3 H4 }4 Q+ `setup-plot1
; M0 y& g. W! _8 a2 t
* U, s* m& X! `$ k
setup-plot2

/ ?. Y, \6 Q: G& ^2 a6 t* }
, I: h  h4 \6 G6 w  |  Gsetup-plot3

- F0 W: R# I" ]5 h. f2 A0 K; Hend
* U" L) p' L' I6 {& A. S8 f. f
# D  X- E7 U+ M;;run time procedures; q. I: M5 V! R1 b
" B9 \" _- ~! V0 ~# Q, h
to go- b3 F  M. U' I/ G; K' m. j
9 ^& G) |# c/ \$ X) S5 ?) ?
ask turtles [do-business]

* Q0 t; [0 P8 Vend3 ^* P9 d5 l) g* Q; a
: p" y# p! [8 }+ Q; {' Y* D
to do-business + `# U& S# O: X' h1 k+ j

/ f, p+ o2 B+ }8 P0 F9 i# X$ G/ e, B' H: F
rt random 360
. B% N) y( {8 Y& \( g! M
( x& Q+ s! i. _
fd 1
% N1 v; [) s# d0 p+ |

+ V, _) m% S. Z$ G" C- C9 Lifelse(other turtles-here != nobody)[

  S4 u( X' I; x: q+ @1 R+ |, R2 n% _
set customer one-of other turtles-here

: ~& g- ]8 N6 U$ D
* A- s% `" O. V5 t;; set [customer] of customer myself

# r) z' Z! r6 F
4 D/ ~7 _% R& \6 b. i* d3 l/ r2 xset [trade-record-one] of self item (([who] of customer) - 1), {9 I1 T- r8 m- O3 p& a0 G, m
[trade-record-all]of self
9 C& M% v4 a! @1 {2 o  n7 H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. o% W, r" g" Z' u$ d4 n5 m+ ]

" R- W% Y! e! g, yset [trade-record-one] of customer item (([who] of self) - 1)% v+ j9 _/ {% R" p! j# c. M; _. y
[trade-record-all]of customer
6 ~! D2 [" @0 I9 X) W& ^5 e; @. t$ B
# H3 f% D. e( y& [* S6 p9 q6 e. C
set [trade-record-one-len] of self length [trade-record-one] of self

6 C: a5 ]/ Z# v- Z* H" D6 d- \; h' D3 ~% j
set trade-record-current( list (timer) (random money-upper-limit))

8 Y' v& W5 o" r& p
/ Z4 u" Q1 y) X$ V8 _ask self [do-trust]
( Z( U, }- N' Q6 D; A$ o- ^;;
先求ij的信任度2 n2 l  s+ H9 e2 s8 w; _7 U2 ?
/ A1 q# ^4 w: G+ f* t4 C# Z
if ([trust-ok] of self)
2 p5 {: D* ]; o$ G" A;;
根据ij的信任度来决定是否与j进行交易[
5 x7 @/ z& U; P" oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 h2 g# l+ `' C. a4 _3 q0 K& M
9 {# k6 j. o; l% J+ W[
' S' J' g% h0 Z( F3 j" E5 h. q

' ~0 T% O7 N0 }9 c" W! f3 p6 O. Sdo-trade
( g3 ?5 e  K# S  \
+ A9 a  h; p8 w$ P4 [$ x2 @
update-credibility-ijl
7 l  ?1 m* j1 q4 ~. s
; R$ {% V, }1 P' {# E+ i
update-credibility-list
% ]# x9 S7 D! T  i4 l) |
' \1 t5 {0 Q! K1 W8 @
# m4 v# N' V& B3 {
update-global-reputation-list
" R# v6 d6 R6 E/ s/ K. |9 E

5 L" u2 |$ b! R, ^# f* Npoll-class

, A6 l9 ^4 h% l4 O; G
/ F. v% ^0 T- p# x3 _( Dget-color
: O" D1 |1 b) @# j' Z; D5 V) m
2 u# |/ }* y( m# g5 D& t' s9 U$ F- D+ A
]]
$ C0 H# I' a* u0 A2 m5 b" I! j, L3 b
;;
如果所得的信任度满足条件,则进行交易! {' j: a* B/ S' j1 s" [# ]

! e6 f: q( O9 x- M# E+ P  i; f[
! R8 l, p# h* M, C

# E$ \8 }4 \/ X* }. y& prt random 360

* e! c8 C" x( R' v7 v% u! l0 E9 j; E- P. t. t" a4 [* p
fd 1
* q4 b# |* p) V9 K; I

# t8 @2 h+ u) |6 u' w]

. o  ?% N9 R: D8 W
6 P6 V4 q6 y* R- W0 V6 Dend
- O1 f3 @9 H7 u* s% }

" f) k# C2 d7 vto do-trust
$ p$ C7 ]! k, c5 P# r! U! B: h" eset trust-ok False7 t% q$ ^" z# i3 t, C8 p
) [7 N) d3 t5 p3 V1 c' X& E5 K" [* ^
" I* D& s: `7 x+ G% B6 Y/ H+ P8 \1 L
let max-trade-times 04 z( z4 u; n9 v$ r$ ~+ i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 w$ l# Z" V+ `( j7 `0 X# B# s
let max-trade-money 0' T! Q: Y4 W2 B2 z' D! ^" |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], L1 g0 a9 X( h7 h6 _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 O' l) y& E& S  o

! m9 p; C0 P: k% U" i. E

  G1 f' H) z0 X5 Gget-global-proportion
- w1 K: D/ k( M. w& e( @: I) @% zlet trust-value
" S* {2 q' P4 p  P! j- Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
4 G) i8 r: Z0 n1 y3 `# y
if(trust-value > trade-trust-value)
( X' j' }' l6 A9 n" }[set trust-ok true]
( u6 x5 {/ t3 V+ {% K: J; Pend
: o# S- T7 g/ Y2 F: i0 R; ]; i4 }% S, T1 Q% o9 Z7 ]1 ?6 m
to get-global-proportion' B# x6 x$ H$ @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 i3 s. c3 b* |; P6 k0 y[set global-proportion 0]+ R! V3 v4 U# \3 q
[let i 0) |# {$ }; v7 `" H- }2 l
let sum-money 0+ Q$ h5 U& ~" Z2 ~
while[ i < people]! ~4 ?! C( c5 C/ ^
[
" w  p8 c: G( g6 {, ~if( length (item i# t  ^7 G' M& f' k
[trade-record-all] of customer) > 3 )
8 b& ]1 E) _5 A& I; f" \3 R
[2 J( ]" H1 e8 t& v9 J$ @, S0 A: n$ v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* A9 m  n$ i% T* d: E4 \
]& v# }9 K$ ^: w+ a& D/ d& t3 L& x- W: c
]
" a  e/ c% y$ o$ elet j 0
9 S' e. |4 t( S3 alet note 0
  `. L. }2 w5 w/ H3 iwhile[ j < people]1 I% _7 i' m5 X- Q1 \7 m0 r
[
8 Q$ _( G% s- \) v  ^if( length (item i
. F, ?' j7 Q7 h* o0 B[trade-record-all] of customer) > 3 )
9 A7 M* I, }9 c! \- }" z% `' _; ?( q
[- D# w3 y) x5 j2 U, `9 w
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)9 Q) k8 P. w3 E5 f  q; G- _+ V, s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 M) }: d% _; }% K: g4 g2 ]6 M
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. e* L. l1 {, [8 H; Z, q
]
) ~. H: y9 `* T5 O7 `]4 X* ^+ K# B5 b/ [  T0 A
set global-proportion note
+ j/ `$ ]* V) {3 H. T]
; x. `$ ~* `& V5 }6 F1 |end
$ X! E  A5 @5 h4 a$ U; H7 S9 N- Y' J% R0 u3 d4 a. X
to do-trade6 f( i2 N7 t! J5 j+ Y
;;
这个过程实际上是给双方作出评价的过程
- @. K& E* U8 F4 C" R& g, Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 m+ Y) }/ Y( R8 E$ x, r% e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* B. g+ c4 O8 g' s% z
set trade-record-current lput(timer) trade-record-current
* C6 O8 [" N1 m( o8 q! u;;
评价时间
1 b1 x. [- F, ?ask myself [, }! @& `3 {/ y# R# b2 U2 M! J
update-local-reputation
$ }& I" H6 C; [3 J! O( f) eset trade-record-current lput([local-reputation] of myself) trade-record-current8 I8 J! A0 o4 d- `5 O6 Z" W7 J% o
]
& _2 e3 Z) T. }- xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 B( C0 m! |4 ~( \$ m
;;
将此次交易的记录加入到trade-record-one
/ V3 w) [, m, {+ U+ z3 j, N6 Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! o8 n3 U5 e  E: ?# h" f
let note (item 2 trade-record-current )
5 v  o4 n: W1 _* ^. q* M. fset trade-record-current
- Q, D- n" p4 i5 U(replace-item 2 trade-record-current (item 3 trade-record-current))
; M+ U9 X5 e& U4 A+ T
set trade-record-current# r; E+ s+ P/ o5 c# s$ Q& ]
(replace-item 3 trade-record-current note)# k4 J* \8 v! [2 }7 g* ~- x

3 u/ v1 q+ u2 r+ s8 m& `% d
( P. p  H' @7 L$ I$ B% y* X
ask customer [
1 S2 D- ^$ J& `! t, dupdate-local-reputation
/ Q4 I6 N5 ?- j. C) Iset trade-record-current
( g4 D7 f$ _2 `; B( a" ?' @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 l: x+ m* Y& n& C! E7 p4 W]4 g9 D0 g) D: B
; q! o% w! y" e1 n
1 T* u% W- u2 P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. e/ O0 P/ c4 `: |$ a! m# s
1 Q" \! }. ^3 r6 v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* @1 K! _; H/ Z;;
将此次交易的记录加入到customertrade-record-all
3 o4 P+ N/ ~# j, vend6 g# A3 Y# D/ ?, ~: P
/ a$ y" y2 O4 J$ N2 A
to update-local-reputation$ S/ [' r7 o' M2 h
set [trade-record-one-len] of myself length [trade-record-one] of myself
, p0 |1 e4 v" R
. g$ Y1 ~, ~7 A8 x! `" x
2 F# s: U4 C/ A6 r0 e;;if [trade-record-one-len] of myself > 3
4 [# }# v, y. f* E( D
update-neighbor-total) f1 y7 Q0 t& }
;;
更新邻居节点的数目,在此进行' G# B/ s3 R' p' |; {
let i 3/ G2 ~; a  K% [
let sum-time 0+ Y+ L$ c1 K* y& u3 J
while[i < [trade-record-one-len] of myself]
. w  Z& }* Z. u6 k( C' j2 I[. D) e! h; L: k5 ~# g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 G% t/ Z' C  g( P; i* a9 q. U
set i
& q, [. f  l' [7 v; x( i + 1)
4 u( J0 v7 X% g/ m! D9 D
]4 F/ k* c% h( k0 T: b; S  B1 u
let j 3( P" x# n, @' M& G( z8 H9 y
let sum-money 0- V. \9 j$ E- H# v" C
while[j < [trade-record-one-len] of myself]
" `) r( b! X1 }7 c0 K% {% w1 ~9 T[
) y, c" \) n! i8 Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)  P4 h$ U0 F# \0 s) P- T) \$ i  ]$ X
set j( X, j3 }/ E1 X5 u, x: m
( j + 1)
# ]& T/ P9 G# G7 n" v
]" C5 ]' ?0 l5 H1 E+ ?8 y. A+ c
let k 3
  ^; |# `) C) C) K( Llet power 0, \7 g0 V; S, F" \8 Z+ R
let local 0! ?: {( ]7 p: {9 Q1 I
while [k <[trade-record-one-len] of myself]
. F$ i& X) o) j1 l7 ~1 T[
& C* J$ ?! h: b7 v  y0 Pset 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)
! o* Q* Z$ {+ Nset k (k + 1)
$ _( I' `; X, Y7 o# o  y]
+ G4 F% Z: o9 fset [local-reputation] of myself (local)
  {0 W) g" P* H1 Dend
! }9 |  @; v5 t( M3 z
( i+ t: I4 J+ G1 e) _& pto update-neighbor-total
% r0 ~$ W; b2 L3 y: x$ {% `( F. i" s1 f7 c- V8 L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# C1 K) g6 w: x) e" S! @
* p! Z, y" W- u9 \$ N
$ w4 K$ A7 f6 P/ s0 p
end) X# t$ g4 i, _+ g
, t! Q' M# }; j+ q. t/ H7 [
to update-credibility-ijl ! q. u2 c  ^# E9 Y; I0 N" X1 @0 F
2 q# C+ p8 M+ w$ }
;;
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。
5 n/ P/ _! ?! plet l 0' f6 O4 i$ j4 ~2 W( D' l
while[ l < people ]
( {& A" ]3 V2 X3 t: J" T;;
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
8 Q) P3 x- j/ X& u[
7 v; C1 o6 K! d% \! ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  ~8 }( ~; b* E: R9 H
if (trade-record-one-j-l-len > 3)5 b: \, v4 z( J: j6 ^
[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 @# Y, J; W9 R
let i 33 Q1 l7 L" K3 R5 ]
let sum-time 0  I; I* B# b/ K- n. z$ t
while[i < trade-record-one-len]3 \+ J" N: l# u7 ^  w$ f
[) [4 t- z8 c+ I; d5 e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 F5 u# t& \3 Gset i
+ f3 w- v8 r( G7 C$ }7 j1 l4 a( i + 1)

* Z1 D- y* }3 |) c% L1 c8 f]
, y6 j% m* @& ^! Nlet credibility-i-j-l 0, h$ G" n5 O: M) N- v- p4 N
;;i
评价(jjl的评价)  N0 b& e+ b9 c' c
let j 3
3 O% b; i+ s$ H. T! Tlet k 4( b5 {% X& X, S2 g% S) u
while[j < trade-record-one-len]) R8 A2 d+ p1 Q4 M1 c' ^7 N
[- j5 `/ V; Q8 z$ J
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$ k' e6 J2 J0 Z; m) o8 Z
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)# C- l; {) N* m
set j2 j: T. ^0 E2 F+ a6 b
( j + 1)
/ {8 s+ e( J% s. k3 w5 S
]0 n1 C- _+ s# c) p  n1 U
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 ))- z  l. W% d4 K& X% ^% M
: ~* v# ?$ p$ T

. `0 i, t+ u; I) A$ O* D$ q* Vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ `( L5 a; t8 P0 W0 N( C( ]) h
;;
及时更新il的评价质量的评价. s2 L8 p6 Q+ c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% o1 m7 M0 z* S( r# s% L/ mset l (l + 1)
  `/ S8 W2 i& ~7 h]
* |0 G8 u/ K: S4 B: }. M; Lend
- P2 w& G, ?  m% U( A
" Y1 Z: P' \3 S* \$ t# g6 @/ ito update-credibility-list& \; V, u1 Q3 A
let i 0$ a: U3 o: V6 z  _1 s* c8 q
while[i < people]
+ ^$ I3 ~4 o% _: x[
; \0 A% r1 f( F9 J" I* H% Flet j 0
; Z5 \+ W( V8 T! r5 Z  x& tlet note 0  M# A1 {8 v" M0 h
let k 0
+ c0 P' K" n- Q;;
计作出过评价的邻居节点的数目5 V2 M8 H7 D+ z  w
while[j < people]
4 O& @- o: ^7 w1 ?/ e; G8 o[9 x# p2 f1 f5 I- A- L- q' x( S8 \
if (item j( [credibility] of turtle (i + 1)) != -1)
8 w4 q0 g6 M% O8 v" c;;
判断是否给本turtle的评价质量做出过评价的节点
6 S9 o5 {5 A2 |$ G[set note (note + item j ([credibility]of turtle (i + 1)))
$ N6 l" n" W0 _! R;;*(exp (-(people - 2)))/(people - 2))]
$ b8 G# F+ Q8 C# M
set k (k + 1)
. V6 \- Q, ~5 F) d3 P]
/ D0 i1 g4 |7 hset j (j + 1)+ b, l: a! s/ G) T2 U, w
]2 G& z" v9 H1 }8 g/ \- Z& I3 Q9 s
set note (note *(exp (- (1 / k)))/ k)  \6 J9 t. c% }' W3 k+ h
set credibility-list (replace-item i credibility-list note)' ]  O# w  c1 x
set i (i + 1)
: H' P5 G; s$ I6 O9 z" R]
% S( A# r( T* ]- t2 ?5 x  Oend1 l6 M! Y! t3 h  k0 v2 a
5 ~* q' q4 l( X" j
to update-global-reputation-list
2 g' s( b# E. `* Y& N8 \7 ]7 ilet j 0
- A: Q0 ?5 W' T# iwhile[j < people]
/ ~7 F- i- i3 a; _$ d[
+ Y1 Q( Z# {+ |/ D8 llet new 0
- j3 O4 L7 ]; V5 ]3 y7 O;;
暂存新的一个全局声誉, z. |1 z) c( ?1 `# m. E: k2 d
let i 0. p2 W6 o! K( r4 L# `
let sum-money 00 D& Z( M3 M$ k
let credibility-money 02 |  c& x; o: Y4 i- {/ K
while [i < people]; ~# A* D2 I9 Q; \2 s7 r
[
2 Y( S# D3 _( p' j/ D2 C) J' ^' Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' w- b: l' a9 J. z3 m0 V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ p+ O' H; ]  P2 A- e# h
set i (i + 1)
* K& n0 |. U0 C]
. a  V/ _& p# k6 e' V0 glet k 0# ]) D: I+ P: g( b
let new1 0
' _. E4 c9 q9 W9 Q' C# H# T+ uwhile [k < people]
1 L; I, }8 ~/ i& p[
9 p/ Z5 a1 H& C9 x: ?7 Zset 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)
* V/ B5 U7 \- i1 z+ u8 E1 Rset k (k + 1)& g: z/ A2 J6 N. O# \
]
. e* f  V8 V: O5 a1 Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , `9 s. Z$ \+ g; l2 |" V3 G4 _
set global-reputation-list (replace-item j global-reputation-list new)0 j. V7 e5 a3 J6 z' ^) s0 {
set j (j + 1)( c8 B3 Y6 ~0 ^0 d
]0 @3 m, c9 ~* Y8 c
end
" H3 [" `% U5 u! a
: ~9 d: e# u' S' ~* }8 x# B
6 d% D. w# k) \* L
4 q4 i4 J% v: T7 E, tto get-color
9 L9 o% b1 w: w0 i  g$ }3 V
& H( [$ F5 x' T5 D+ t% Fset color blue

0 F" w5 H7 `+ ?+ x5 {3 qend! h- j9 O. J' j% s! Q8 }: W. n

6 |3 G, i; H! e: |1 L5 mto poll-class6 M& |* u; |# c
end
. V: ]/ o  N% t, V' {
/ C9 h7 M- M1 e. mto setup-plot1
) g* z% b0 A6 A2 F- j# D) \, F
7 U" u& c# A& t; Hset-current-plot "Trends-of-Local-reputation"

' @( F, {+ P  p
! D; X4 R6 `# v0 A5 O) {" k: |% Eset-plot-x-range 0 xmax

! E: @& G8 h" A" R
4 o* E2 `+ \8 |& lset-plot-y-range 0.0 ymax
6 Q% Z( d7 |. u, W9 F
end2 n% \, `& v# K- ~: W+ g6 \
. z& ^* i' J+ x' ^  w$ b
to setup-plot2
$ }+ ~6 [  s% _6 ~2 v5 v* w  f5 t' j
set-current-plot "Trends-of-global-reputation"

7 V8 B) B% @% a' @* E7 e; ~, O* l$ J! N! {7 }0 J
set-plot-x-range 0 xmax

1 F8 \" {. k0 A1 R: W
) [) ]/ \: ]5 a( I& {! w9 U- Jset-plot-y-range 0.0 ymax
- }8 }5 U* ]) A3 w
end
! I" c) h/ K5 {, W" a
9 B3 h5 b' [* [/ b5 R. [  v3 zto setup-plot3  T2 J) X+ F0 C1 D
7 ?% W8 c( h8 b) o' X+ O
set-current-plot "Trends-of-credibility"
( A$ |7 d. M5 e# I

# k3 W% v' x. q% k. L# qset-plot-x-range 0 xmax

. ~! b+ a; z3 ]/ g
, @6 L. s! U% M: ^3 B$ f4 rset-plot-y-range 0.0 ymax

4 l# B/ G9 ^$ B1 j0 Dend) F! l* \7 y& Y# Y5 I3 W; p
. u, n( r- J# ]5 ], C  L
to do-plots5 a% q2 _( e% }
set-current-plot "Trends-of-Local-reputation"6 c! |  H! j- o9 r
set-current-plot-pen "Honest service"3 B5 q& U* d9 u/ A% Z
end
( Q/ I9 e+ F) e, t" o0 O" o' M9 R/ P2 h2 P" T
[ 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 @2 C' s# x0 b& [$ ^6 O

# c0 W. C- L/ K4 N3 L; g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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