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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:/ ~: m# g# v& V' U& x, ?" n9 M7 f
to do-business ! Z% \" W( L8 J( }, B1 F7 W6 i
rt random 3602 y5 t+ x0 n5 f1 E0 L- J: A6 q
fd 1
2 \% r! d, j) p! }5 W0 v1 S# Q2 V ifelse(other turtles-here != nobody)[5 K5 A- n) |+ I: N: G& k6 B" L
   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.
2 j: g( c: u" u- B4 q3 z6 s   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 C; t, \  u$ {9 |' f3 ~& D2 Y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# o+ G& L0 C3 H3 m5 X  N, m* v" p   set [trade-record-one-len] of self length [trade-record-one] of self  }' A9 {# e* M1 \
   set trade-record-current( list (timer) (random money-upper-limit)); Q5 `1 E1 S3 N6 D& i

" \9 F' p6 S& Y3 C问题的提示如下:
9 _+ g. `' T  y3 ?$ N
# Z7 a6 i! l9 [* o7 h3 y* f& Jerror while turtle 50 running OF in procedure DO-BUSINESS# m( D" w2 Y: H# ~
  called by procedure GO% q+ U! Z0 ~) b" w' |  q7 C6 E  i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" k! r* p+ C2 `$ |; J# |
(halted running of go)+ y; U2 v' l$ Y  n! q& ^! O% K

, t2 D0 J2 L$ T( x  w- h1 H- B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~~
2 B( \* q2 s8 U% G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" l& [+ T& v2 ]7 f/ U& Z5 ]
globals[. T" G$ @; l' l0 |/ _4 @1 n, J
xmax# F2 h# a3 a. a
ymax1 i- D- y6 J% z8 R1 c4 n6 [' p
global-reputation-list
+ {2 ?: Y5 g6 E( q! z
& W- n4 p; n- y# i;;
每一个turtle的全局声誉都存在此LIST
: F/ T5 l7 r: P( g0 i( O5 Xcredibility-list2 x* B' ^8 Q8 Y+ t! D8 e
;;
每一个turtle的评价可信度/ e: w/ n% w, x/ A1 u1 j) i1 l
honest-service: K4 A9 s1 Y2 H/ D$ r- ?
unhonest-service
: G0 T. l! l/ g4 h0 A  ^: ~oscillation& r1 `! M  ]' X; n. b
rand-dynamic
4 o( [+ f% b2 T], q8 A  g' V: U
5 C4 A, z* k  E2 x6 ]. e
turtles-own[" M9 ~+ n2 k. s0 O4 n- ^. i- T
trade-record-all6 ]5 K! I" [, A' }3 H3 R
;;a list of lists,
trade-record-one组成' m1 g# N0 `/ d$ Q$ c
trade-record-one
3 v8 p1 X# z* E# J; K# U- m- ^; F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ r/ S9 i; a8 K7 \
5 s5 N- G# }8 A4 @! U( 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]]+ z/ o0 [5 j/ Y  f/ b
trade-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]* u& \0 B$ g7 q$ s  p
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
$ R5 [. f* }1 i# }  X" ?neighbor-total
2 r  T" e$ L" h3 R! U. k) ^9 j;;
记录该turtle的邻居节点的数目
1 L! _" m% s3 j, Ztrade-time
  P% R- b. z+ h, t' u# T7 R) E6 ^;;
当前发生交易的turtle的交易时间
" \0 {5 m8 e. T! c1 eappraise-give
% ^* d6 ?5 w2 O6 b7 h' ~+ z4 u;;
当前发生交易时给出的评价- I) [& i$ V& c: Q4 @' {
appraise-receive
; |( N  N4 p8 H$ {# t* N% A6 U;;
当前发生交易时收到的评价
8 ~1 h+ J6 P5 {appraise-time8 z2 P8 C8 H+ f/ y$ j
;;
当前发生交易时的评价时间
7 e" @; ?5 Q- }( {3 b+ slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( Z8 P3 W; f$ E( w8 M: G5 c" q
trade-times-total
' g7 V! p# C* B/ K5 w. A;;
与当前turtle的交易总次数
0 Y, |2 E4 E3 l% B9 k1 N8 Jtrade-money-total. C( u' r' c) r% s. p
;;
与当前turtle的交易总金额3 s8 l/ T- m8 [
local-reputation- _- Z$ o' A3 [4 y5 z2 |' @
global-reputation
5 z4 |% N( V9 kcredibility4 W3 g8 y/ Q- m* Y% z
;;
评价可信度,每次交易后都需要更新
% I* f  c$ r1 |2 |+ _credibility-all
) a8 J8 a; i2 Z7 j;;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" [/ s* l  l4 m& v& O* V
$ ], a" ?6 s* R4 P! Z, c
;;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
- H4 L1 j8 {' ycredibility-one- g# b3 l+ Q8 B$ i8 y& h
;;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! G5 c7 E, Y# n- B
global-proportion5 g9 F4 }/ U* h  j
customer4 ~) p. O1 V) x, w
customer-no4 C5 ~! p. F4 \7 c  p
trust-ok2 ]" d: i* P0 W1 z, `. v  H' y
trade-record-one-len;;trade-record-one的长度7 l9 V  p  m5 j1 J/ p' u( M2 u
]
6 Y% N) L, L) w, u- K; t% b* B8 u  A
;;setup procedure
7 u" L( f8 g; g8 n9 r& ?4 N# g$ `/ Q% Y7 z5 _, E
to setup8 ~; G: B* w% [8 P( m  i& d
4 \) X4 v9 B' N" ^# y# v
ca

) _! d2 P, @2 \/ G9 G7 I6 ?+ v$ D1 ~7 d/ Z
initialize-settings
; p6 l( o8 `" H+ ~) t
1 ]& ~! R8 S9 c) Y0 X
crt people [setup-turtles]

6 E0 j/ L- m; f; n
* {( `; O% S, }2 p2 ^reset-timer

. w8 _$ b8 ~- k& f! R+ Z/ Q2 H
0 K5 K1 S2 L' [: z  R0 u) vpoll-class
( Q( a8 |; f1 D+ _0 g) h; K4 a
, q9 K( o7 u% X  g( w5 u
setup-plots

! A+ k- z# q2 |! _' t! Z
5 L9 i2 f3 o- odo-plots

  F6 h% {. Y4 v  s7 nend  z9 Q/ o0 B# j3 J) Y

9 S/ n4 ?. V2 F+ m  Hto initialize-settings
8 q9 M) ?( W0 y2 u# R4 U* w" W1 H- w' M
set global-reputation-list []
* e5 {- N# i+ D6 f: d$ p" r; U

: T/ E2 e# ?/ H6 xset credibility-list n-values people [0.5]
3 d1 R) q+ C0 q& b. g! M5 T) o
1 O- A* n: Z7 z4 F# W: w6 I  G
set honest-service 0

# X8 f$ O' e4 {2 n  y8 Y7 I
) L( O7 z. P/ r4 Pset unhonest-service 0

- X# l, X7 d% D/ c& q. D; m4 r5 u* \9 G. G' O* b9 \* B2 i& ^/ a' U7 _- I
set oscillation 0
- K* b+ |+ [: l' o7 K
0 m0 z- N. U* H( H* L
set rand-dynamic 0

4 j0 m4 c8 ^: Qend! W0 O0 ?  `! C/ R; r$ @- W& x2 p8 I3 B
$ M1 u& x9 X2 M2 G  T0 [
to setup-turtles
+ a. [) s$ c) g6 j. I5 c* V7 bset shape "person"8 C6 Y2 k% k+ `' s
setxy random-xcor random-ycor
8 }( i% Z) f2 Zset trade-record-one []& z  {* A* q: n) ~- E' R0 T5 W; L
; c& ]; |4 O7 A
set trade-record-all n-values people [(list (? + 1) 0 0)]
- L" b% u9 p3 o, T; x8 r
" Q8 M! _# }* m! _; @: X
set trade-record-current []8 N% g+ D" [) F" H  C" D5 D
set credibility-receive []
( q" n& g5 k0 M$ m' tset local-reputation 0.5
4 ]$ T) }, r, m, @set neighbor-total 0
: ?4 ]& K7 E$ {- k  u3 {set trade-times-total 0
0 c: V# \' H7 ^) L* rset trade-money-total 0
! B, i$ v; c0 Fset customer nobody4 f. o; L8 N# q0 T* i0 u
set credibility-all n-values people [creat-credibility]' _4 r" D) A$ ]# r1 h- O
set credibility n-values people [-1]
# Q, H6 G4 t7 K: ]8 g* @; x5 \9 |get-color& P0 @' Q: @0 M2 v2 F( N
+ T2 Z* N' P1 _% H% F: Q& Y
end
% B+ O' U+ n0 s8 p! y' C8 y4 z- z: v$ D# x0 h3 o
to-report creat-credibility
2 @: G& S$ a" ~6 kreport n-values people [0.5]! Y. ]( {2 S" i% p( s  H9 d* j
end( r4 C8 T! ^2 B5 @8 o% y- x3 z
& x6 }9 |2 c$ i8 J2 I4 t3 j& ~
to setup-plots5 R7 x0 ^! B# d1 P; v

- _. T6 W$ b! }) ^set xmax 30

: O5 X$ n) m* y1 ~6 c5 |/ M" C: R
set ymax 1.0
/ m! ~4 [! N5 X, Q1 B- v
8 W# w# F" O/ p) X+ Z' I6 q3 X
clear-all-plots
' U/ @/ R7 H' R/ n. \/ R! J; V

2 u/ C, m3 r9 R- b8 jsetup-plot1
0 q9 O" v! h0 D! k+ p- L7 D7 P* d" S

8 e& L* c& x- o3 f6 n' G6 [( ]setup-plot2

$ N6 c; a/ m$ t3 s$ ]4 ]' J& {# M4 o% {4 y" i- ]% V
setup-plot3

% v/ k1 r  x, iend; W: K$ ?) q, E. ~% s4 |
, K9 e) D5 K6 I% i3 m
;;run time procedures) {: X' \, ]8 s7 e( Y8 ]1 g1 Q
9 C/ f/ K  y2 L% W
to go$ p- F, p! L* b  {# ^6 o
, W$ a9 n$ A7 K
ask turtles [do-business]

5 V0 _, l) `2 C1 U% c/ Gend
/ X* I6 s6 n0 F, H% l) [2 ]/ j5 A7 r6 v! V4 m$ D# A8 |$ A' c
to do-business 1 @. n" p! X/ r$ u! ^
0 m' ]+ _/ u" L' X$ Y3 p

, F! I( N. G, F- ^& i3 Ert random 360

) w! e" j" ?# R& n1 f
4 S& r! B& |- j: ^( Kfd 1
" R2 |# @2 X- ?' A+ V9 ]% e

; L- H5 ^8 Q& x' m4 X2 [ifelse(other turtles-here != nobody)[
3 q( x5 I3 v0 _0 ~- X  K

1 b, c8 n# g: W1 _6 @( D) `set customer one-of other turtles-here

9 L) t! ?2 T) z4 H9 J5 ^, p+ @
;; set [customer] of customer myself
; T2 \# ]: c: v; y
4 V$ v+ w' m+ \  q2 ^
set [trade-record-one] of self item (([who] of customer) - 1)- W& U- Q- y; s1 G& Y3 ^
[trade-record-all]of self- p! g) P6 M8 a7 L% N% ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# z0 }  \2 x8 Q. S* b0 ^# W

. Z$ V* Z# B$ }) J! P: eset [trade-record-one] of customer item (([who] of self) - 1)4 m8 c, {; V2 R6 M8 Z) n
[trade-record-all]of customer

' w2 X) P# c; h' [3 X& A2 f  e( m  S! p
set [trade-record-one-len] of self length [trade-record-one] of self

+ n; T" ]$ f; U! m: h% [  T/ _. a0 h: ^, @: a9 \
set trade-record-current( list (timer) (random money-upper-limit))
8 `4 s4 y. @/ V/ W7 T- K9 _

0 R3 t( q- _4 U( pask self [do-trust]
4 T6 O" z3 S( P" G;;
先求ij的信任度
$ g& W7 Q2 U' n! d" x' d' g8 ?3 A: F" H% e9 ^8 r0 h
if ([trust-ok] of self)8 r1 ~* ^( e/ q: x, W# u
;;
根据ij的信任度来决定是否与j进行交易[
9 `, r& n6 g6 a" M# Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ n2 q  ~4 ?5 F# k0 [/ W" L

! V6 T: `- R8 Y$ o6 c1 X) ~7 v# q) u[
( L" r, o0 ?6 q2 |9 D, D9 w

& R' C' g' O  n% K3 F5 ^do-trade
1 I3 y! y. H  x6 U3 U) V! l4 t4 a- X

0 d9 w/ u! [- wupdate-credibility-ijl
* J: E( @: @  f$ h4 O, U$ }' [
; u8 |' R7 R8 L4 {" B" \) c+ l
update-credibility-list
7 b! e! y, X' n+ l/ N% ~% F# G

8 Q! X5 ~, Q6 i  Y0 G* O, n, T$ g6 M5 p. A# g2 @; r9 u" X, B
update-global-reputation-list
! @, N$ O& G/ I3 M
' U( H# ?+ j: o& d' `! y7 x
poll-class
( O) [* |: l$ h( t) ]; Q
- H6 z5 J. S% t7 \5 T4 D% J
get-color
7 D) |. e& n& i0 S# {# p
0 O; E: `/ {. j$ y
]]1 K9 r/ |9 K! K  [
( S2 b- A2 V0 z; `) `. |0 R
;;
如果所得的信任度满足条件,则进行交易- C& x( @5 [1 C1 K$ D! \
/ ~  z% D7 J. Q* F, d3 r
[
3 Q+ e# F/ I0 F/ S

) ?4 I0 |+ H. y) srt random 360

8 B7 j8 [2 m+ S: j4 H$ Y) l4 y
& `6 A( w5 x2 I: Cfd 1
4 P1 d- g+ X7 S, W7 X8 Q% t

6 Z: q6 R3 b0 `- M7 l6 T]
) u/ `" g4 P; K4 J0 l! q" d" S  ?

; c/ ?# R* a+ \# d! A: m( d* v$ ^; Uend

0 I2 H; {1 N) K( |" E' I
) l1 [0 l0 X# M( I! E% D$ o/ ito do-trust
; Y9 }$ `! T. |) ]) p! aset trust-ok False
# x* [: e$ Z. @0 I, G# Q% s
# N) b' o+ R' G( o) ]8 Y* l
0 y/ W9 N. c; Q& g4 ]
let max-trade-times 04 H1 Z( z3 \3 W5 L3 c6 c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 M  e9 g% Q! E7 Q1 |; o* Elet max-trade-money 01 U5 J# V& [* L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! |* W9 H2 |3 v9 o! ^( a
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), K9 A  w7 p$ O- `
5 a* I7 w  ]) L1 \" z
9 c* d5 `( M5 c4 X
get-global-proportion% f; W6 X! Y8 `" s+ V, _1 Q
let trust-value
- e) y* ~, W- ~4 Q( ^6 A, h% |/ ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

! n; A, n3 Y& pif(trust-value > trade-trust-value)) V: {  B. b( {( q! G  l; G
[set trust-ok true]
) }8 f0 S2 E+ f1 Bend! d: ~- r- n* u6 o# A- @; `

3 H# u8 Q8 {/ j: ~, l) Zto get-global-proportion2 r1 g- O3 C1 k" @! t  N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). A, }, w% J; j& N+ B% O' S4 i+ |
[set global-proportion 0]! a( f7 b  V1 S* X$ x
[let i 0
- h9 }& {) p  {; }5 \- dlet sum-money 0
" y9 P3 T. d1 @* n7 ]7 Swhile[ i < people]
) v2 ~- j$ v1 |! r1 m[
5 s; Q$ ^. }6 ?/ w) Wif( length (item i4 V9 ^$ B+ q; r! I1 O" E) Y, }
[trade-record-all] of customer) > 3 )
; F$ |' U5 V! P% F
[* d- q6 D, O1 v' U& y. }3 M6 e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 H' h  @9 u+ r0 l/ D6 O4 B
]
4 @1 }% v/ R5 Z3 m) `, u& ?]
( a0 J' C/ e% s. I8 e1 l" qlet j 0
! j0 C5 `6 x8 `; Mlet note 0
$ P" Q$ l) m* c! @+ [while[ j < people]; Z! t- [/ h; [1 M$ f. L3 a, D2 G
[& D! ?6 C6 R7 P5 w0 o6 L
if( length (item i  x! W. g& A3 c
[trade-record-all] of customer) > 3 )

/ b( Z% U  O6 k5 T+ B: `[  @( z! s5 J( S! _. e- p1 [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 V* l, F8 ], A1 |  _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ x. X, \9 e. \# ]8 ~/ o4 d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ q  P! z, K! ^) g4 B6 [" e
]- w. `' M2 v& h( y
]
+ n& ~3 \- v% q+ q4 m9 V; pset global-proportion note
3 h5 R  G7 p+ m3 n" A3 `/ {]
1 [% _* l* g" i3 P( l9 Cend/ |# ?/ r/ B6 a% x, R
, k7 V# `) O% a
to do-trade, c2 N* Y" L: x. a' z
;;
这个过程实际上是给双方作出评价的过程
. k+ N1 j. T/ O1 Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  R3 D) n8 \) }5 o9 M4 Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' z% O8 p# l3 K; H+ Jset trade-record-current lput(timer) trade-record-current; N5 T  ~% [: r9 @& H# ]
;;
评价时间9 X( s! G! C; K( |. E
ask myself [
. P' _: e4 U' e/ cupdate-local-reputation
+ I' E9 ]2 m/ ~6 R4 |: o3 Zset trade-record-current lput([local-reputation] of myself) trade-record-current& g8 p" V# U  ^2 ?; ^* ^% Y
]0 q- d1 e& N6 r! \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 l  k; f, ], E% P;;
将此次交易的记录加入到trade-record-one' A! K& U4 H0 |# ?- I* Z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 r  S5 Z( _+ s' U; A& Y
let note (item 2 trade-record-current )! L: }- D7 @" p/ D; F) z3 \7 x; V
set trade-record-current
! ~: N& ?9 P6 ^! R: j1 d2 R3 `$ Q(replace-item 2 trade-record-current (item 3 trade-record-current))

: _, V) y/ D2 c) K! Z! S7 G, @set trade-record-current" E) c) s$ n% C, f7 @8 g; u6 \
(replace-item 3 trade-record-current note)
7 o2 C  X1 r' x; e4 F' @
' ]  `5 r" s* _5 z, [# @
! q' }! M/ I/ q0 ]) p. A9 |
ask customer [
& n- G* L; i# Q1 q; @1 K/ qupdate-local-reputation; a; W& W/ I4 f" T! r$ b7 j# v: z
set trade-record-current; a. w- F  W! u4 f0 f( \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, m6 k! i6 a, ~! D! k
]
$ G0 S9 }9 Y" u0 L" g/ E
& D6 ^3 g" b( [6 Q. Y# J
2 ^: b& B- H! F5 M6 L% v, r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 V5 b( \0 H0 X8 I8 J* j

$ P$ f0 C4 D& mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( ^; O$ i+ W4 o% Y;;
将此次交易的记录加入到customertrade-record-all8 v+ B- O! s+ I$ E
end
0 X; l& q1 W" n9 G# q1 _
. G& Z% j# N1 V0 t( Zto update-local-reputation
1 \% }! l% M- W3 \+ bset [trade-record-one-len] of myself length [trade-record-one] of myself
2 W+ C1 m+ O5 N$ j( C: p0 B/ V4 ]& n) V

. ]# |# c' G% Z; V;;if [trade-record-one-len] of myself > 3

! z, w1 Y6 K5 s! U  Zupdate-neighbor-total
4 F; r: a! a! ~! I' p7 G;;
更新邻居节点的数目,在此进行
% ^, M1 z/ y# N5 ~let i 3% B1 A' j; e& y
let sum-time 0( m+ f+ o8 p1 L: S0 l
while[i < [trade-record-one-len] of myself]8 r# h8 }9 n* d! p. Y
[
- p- Y% t# }2 J1 \; u6 l- Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ b/ A+ i& x6 V7 g- w2 e; wset i
! {/ V4 T9 A  H( i + 1)
: d5 s; H  X8 e) s. B
], t: S& _/ U7 q* D: t, D
let j 36 ]  t2 B& T& B8 |9 ^. L+ H6 K) ]
let sum-money 0$ s6 A( f9 Z6 a) T* c. `5 K3 R5 b
while[j < [trade-record-one-len] of myself]( o8 r# h7 J' Z, v
[" t. Y4 o% O& t! G* V: @
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! I( G3 T" x4 \0 _) O% j
set j
5 p, s$ _( t* T) f2 a- L8 n7 }( j + 1)

6 O/ v1 H. u& s: ]7 s$ u]& O& Q' e5 `2 ^4 p; h5 X# n
let k 3
7 M# A- w4 x! v" E0 J* n# v$ tlet power 0
4 H9 M0 Z' K8 O7 ~  K5 Z) |let local 0
% q$ o& f# x6 w, owhile [k <[trade-record-one-len] of myself]0 c: ?  \' P( [) x
[
8 @9 m  ]. T- t/ |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) + G1 \# L& @5 }! M; m0 _5 m
set k (k + 1)6 G$ _9 w' i2 {. q6 u
]3 h$ o! U7 D( q+ m# I( N
set [local-reputation] of myself (local)
& }0 u( p3 K- Q6 y, l9 |) Pend
4 ^' W* V- O/ o5 u: z) \* ?/ i6 ^8 {6 E1 Z$ ~; d
to update-neighbor-total
# u# d6 I* l! w/ H5 M- f% X; E0 U5 ]1 Q9 {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  K( Y- \& g  q0 ~5 h4 r3 Y- |5 A/ a
; K7 c1 B, Z/ i  k$ G5 k  K

0 h9 ?/ W8 N/ u. c  V0 F+ N; Pend+ a6 i# y# c* O4 |. E" v8 x

- o* M: r" Y' c" J2 [to update-credibility-ijl
& C/ A0 v7 ]+ X% Q- i8 H' B
+ H) d! U4 m* _! U" y" U, b;;
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。0 ]: `' y6 n9 x( ^' H. Q
let l 0
0 A# `9 U% w% t! ]while[ l < people ]2 e( D6 F# `  S/ Z  X- f. \* 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3 o: v* _( k3 k" w* J' v
[
7 g8 U- L7 E: h5 `' G- `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 W* b4 a0 z1 B* l$ I# ]
if (trade-record-one-j-l-len > 3)! ~1 Q8 E( n* Z! C3 W+ j
[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
3 w0 N+ D: e* h# N9 Ulet i 3" I- N# {4 m; M! G4 m) o4 y. _
let sum-time 0
3 b* H" S& z8 _: A" w* Kwhile[i < trade-record-one-len]* t* K# ~7 U! s! N6 V9 o* i
[
! |9 |7 b" n( @+ q0 @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 A4 e$ ?6 _3 h  Y* t5 a5 Y+ N' \set i
/ R+ [: R! y$ D; X1 M( i + 1)
7 t0 K! Y7 w- R! f+ v
]
6 R2 E2 x2 `4 v0 z1 f8 ?  K& |; Blet credibility-i-j-l 09 c  _( a/ g2 u! V! I8 G
;;i
评价(jjl的评价)
  L4 }7 O/ J$ i4 r2 x" T' hlet j 3/ g# ^: n9 w# c
let k 4# s) u- w, B! v" U2 z. \. u
while[j < trade-record-one-len]3 C$ x% K& m: }# v
[4 h5 V3 m) T4 t4 _  y3 e% y
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
& Q% k+ ^4 U. E' I8 q; g# wset 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)) `4 T& c1 w) W7 T. m
set j
% W9 h& N: e; B; \, n( j + 1)

4 q- [% V! n* p+ q+ }" @]7 N1 X! ?6 k/ P* I! v6 f  P4 j
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 ))
3 z) s; q3 }9 G$ ~3 c1 h
6 k: h! R/ t' z
0 Z8 Y6 A; R8 E- K) v, ]+ ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) `" ^5 v2 Z. _/ N' P% r; b- i
;;
及时更新il的评价质量的评价
. G9 @4 n; [6 u$ d1 v3 `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' C0 E  f' g! K- s& V4 s  {set l (l + 1)
9 P% A% w3 I; B5 r( z9 U( C6 m' S]7 N+ g: {" V4 o2 @4 g4 V( N
end; C) D$ T# K" \6 i/ x

0 Y, u7 P$ c. f5 t9 k3 Xto update-credibility-list
) m0 q8 X' Q; f7 ?7 X4 S4 I& d5 Q# rlet i 0
; M+ l+ e# Y9 u. z8 |while[i < people]+ Z) B: C+ b# g- Q+ N
[8 y: |3 e0 r& w" U: P
let j 0
: o/ _8 V! M+ a' [4 Olet note 0# @5 p* a1 j1 t- \
let k 0
0 \$ q6 f8 W- ]5 f;;
计作出过评价的邻居节点的数目
5 u; V6 U' X2 F' x* q7 R0 twhile[j < people]  N' N) a2 {- v6 O9 u' m0 i
[: [6 d3 V) q0 _% I
if (item j( [credibility] of turtle (i + 1)) != -1)
4 k9 V2 c7 M3 b7 [- q: v;;
判断是否给本turtle的评价质量做出过评价的节点" [9 z4 L: d4 n2 u7 E
[set note (note + item j ([credibility]of turtle (i + 1)))
0 O! i3 y7 c# `  S0 \;;*(exp (-(people - 2)))/(people - 2))]

% D( _( H1 ^0 @0 W6 j2 eset k (k + 1)$ p7 F+ k1 z+ r+ L6 I  k3 f  [" [* [
]0 E7 T% M7 l- v5 p) Z& x2 j# F' M
set j (j + 1)' I2 I; n4 i. W" k, Y" r' m
]
7 f- e: Y4 v# g1 E( ]set note (note *(exp (- (1 / k)))/ k)/ A2 U4 G  ]2 M" q& Z5 l  a
set credibility-list (replace-item i credibility-list note)
7 Y4 m% u" d! E& @8 J2 Bset i (i + 1)
8 q. e% ~2 S  g3 Y]7 V. S; h/ n! [2 n& M6 J' S
end) U+ J! J: V. ^& `2 w. R% r1 Y( `. O2 Y9 s, ~

. g) n& L3 p0 k' Q' vto update-global-reputation-list" }; C% Y5 h$ r0 Q4 |% X) m6 K+ o0 I9 c
let j 0, B/ v+ q2 s8 k' _+ |
while[j < people]( k5 P  d/ p; _, F+ u3 O8 m
[( R3 |' K* w! E1 T1 D3 U: k# a2 Z
let new 0, I+ z7 l: q! w8 C1 n
;;
暂存新的一个全局声誉: l# l0 s) S7 y" H
let i 0
( O+ s: P+ u* m  k! [2 Hlet sum-money 0+ K+ N) z4 C3 H5 L% k- \7 ^) A6 s
let credibility-money 0* u* E; a& L; ]8 S/ ~
while [i < people]
) `+ q/ y7 }- ?: Z4 P. B$ j[4 y* H" x% P% E5 ]  Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. S7 r+ h2 w: v* H7 l% r5 I- n* yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; J4 K+ x& r0 K8 j: Eset i (i + 1)
6 x6 R0 \" I# J4 k( l! e' W% B: u% \]7 r$ y% n0 B$ X$ S9 L6 s/ `) A
let k 0
7 Y+ G" f7 |1 v; b( V6 llet new1 07 H6 H& G9 M8 L- D
while [k < people]
) c6 t( i. X2 {* _0 \- S: P  i, Q[7 ^7 ]+ w, y$ G$ N7 H$ |
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)
( X0 t- A+ ^7 I( Z# mset k (k + 1)
* d" c! t3 \6 x2 v5 r" A9 ]( F]* L( Z/ ?" k( `; c- X9 c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, P( R( F8 t: s" ~" Wset global-reputation-list (replace-item j global-reputation-list new)
; c, e. D/ P) S, Sset j (j + 1)- T; ~+ G, K  i
]
; H" j; _* \: iend4 @6 R2 b% F- H' R$ U1 H5 m) [/ o

0 r' ?8 S& x# n- D
/ V- R: k3 G* J
. Y5 o* I  T! S. e, R! X8 eto get-color
' h( v9 y  p8 d1 b9 V) Y
7 T4 Q4 c7 d$ T; Jset color blue
4 L. H1 k( j; l* ]# G7 p, Y
end
3 }' g& k* f6 |6 M2 K# j  e" g  C% Y6 |* F
to poll-class
% O/ t: ]' s4 x$ g  Send
9 J/ D  B& z! X5 X% d: h. t3 W7 j! K& e7 a% ?* Z! d/ k3 b9 ?% t; e
to setup-plot1/ O; u5 T5 b% F9 `" c$ T

1 B2 p: ^1 h5 f4 s5 B4 p  }set-current-plot "Trends-of-Local-reputation"

6 M# x% u3 F, ^% D. Q! u1 K1 A5 O5 m
set-plot-x-range 0 xmax
1 |; w: M7 `; ^- {8 Y0 x2 r- R  j. A

  ?6 P# N/ z* H# fset-plot-y-range 0.0 ymax
, ]) v2 W, e3 j/ R
end# X$ h% y- D9 l9 K2 A' W7 W' d
" I5 Y4 E2 F" H. z9 Q8 I0 M
to setup-plot2
; Y" `$ R. b3 v9 S: y3 t# e1 z1 j3 O
7 H, b2 W, O; [, ^set-current-plot "Trends-of-global-reputation"
3 D% D4 ?3 P; o
7 [2 c4 x; X/ [! U2 e. c  q7 m
set-plot-x-range 0 xmax
: d. m( B/ x: L

( d0 j  g" z0 g  gset-plot-y-range 0.0 ymax
" r' K4 G( k0 U, B9 q- u0 u
end
: [7 Z$ V: }' f
+ w/ M  F4 ^: q1 U  q. Xto setup-plot3% W, M: F3 ]) A, w

7 U6 A& i8 _9 sset-current-plot "Trends-of-credibility"

$ b0 p( _; S% b, j2 s% W5 V+ X, C% j: T& V
set-plot-x-range 0 xmax

0 O, L9 ^% m$ O5 w2 j2 P& ]" Z7 _8 u; B
set-plot-y-range 0.0 ymax
! P- b; y9 C( Q; E
end
) S; \5 d4 W% G! B( t- k9 V) G" M
to do-plots
# f  }/ M$ [, j8 C/ mset-current-plot "Trends-of-Local-reputation"
5 g; c+ r9 J. Q' d$ O4 Y8 qset-current-plot-pen "Honest service"3 R/ l3 ^" @: j+ D
end. G9 B- v2 b. U
& V( E/ N2 d% T3 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.; U# t/ Z0 I  J9 A, P1 D: [: a0 a

" T' [$ Q. e2 X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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