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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:# D% s+ x: s5 ^$ ^& b4 j- ]1 r" _
to do-business
' w# |: S! v: }" \0 f& X% B* Z rt random 360
7 x/ w. v( r, n0 C$ W fd 1
4 u8 J0 u+ A0 b- l2 L) H ifelse(other turtles-here != nobody)[
2 @$ ^: o0 a+ {, O& D   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 R% t) y$ C3 [! p( }; A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 u+ D7 f* B  ~& {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 J/ D8 ~  K0 D: a0 L   set [trade-record-one-len] of self length [trade-record-one] of self
2 T5 r# k* T5 L- o' P' A. N6 @, B   set trade-record-current( list (timer) (random money-upper-limit))
& w. \( @  ?* @2 q( w' X7 J. e! t6 y) g& x1 g* r
问题的提示如下:
6 m6 }4 T! ^" y3 F% I4 R  S# r/ |% O. B2 R. o! l2 F5 f4 Z
error while turtle 50 running OF in procedure DO-BUSINESS$ `& i. M9 Z2 H- M4 S6 {
  called by procedure GO& s( i( P5 N; x( ~$ |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) m: s5 v4 h0 Y* ]' `! N( I! n
(halted running of go)$ o: Z4 b* ?+ Y

8 w, n" V- `$ a' n) q# u: j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~~
* ^- h- c, d% s3 l4 f5 e另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
. e1 z: i& Q: K% nglobals[
! a* y4 K) I, A; O" [xmax1 K6 a# k; Y* G
ymax
) c; y; [6 d. B( ~) ]* @global-reputation-list. S- m& o- ]9 M* V! T# S: u

( Y& M+ X$ p! M3 u) d0 _% ~# ?' I;;
每一个turtle的全局声誉都存在此LIST
1 a- f/ a6 J% }3 g& y, ~; |credibility-list! s$ o0 k: @/ Q/ P, f1 \$ h; E0 N
;;
每一个turtle的评价可信度# Q6 D8 r1 |; u0 u+ C
honest-service9 W9 @" {* ?1 s& S- m
unhonest-service
! q* s# S: d" ]1 a# C/ S% N( toscillation& ]+ @" e$ [% Y$ [" L! Y: e
rand-dynamic& V0 @& V: Y& @$ f3 O8 T
]
9 x* J( T) L1 A$ Z2 O0 q0 j; \" Z/ i# l: Y
turtles-own[- j5 _* f. b! |) f' j8 ]8 i1 K
trade-record-all
/ |5 |( x8 A8 Q8 I;;a list of lists,
trade-record-one组成9 r) v2 u* L  h, V0 \' s) e
trade-record-one
; h) H7 p8 o9 z% b2 q;;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 p- v9 s+ Q6 F: t% |1 ]7 l. U
;;[
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]]4 @* f9 d5 w% t/ p& h% \2 D
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]
. D: j8 a8 H  Q6 m; K2 B2 jcredibility-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) b! V( P4 I6 t; Q
neighbor-total# [/ n, ~$ v* h" [7 l% }6 B
;;
记录该turtle的邻居节点的数目
+ K% s1 U' N, b, P: G) a5 ptrade-time
: N8 |3 o: J$ G  M6 h7 ];;
当前发生交易的turtle的交易时间
8 o7 J7 G1 `% t( J  Lappraise-give
6 |' h/ y: Y! w* s* |4 F4 L. @;;
当前发生交易时给出的评价3 P8 B7 e/ F, G) k
appraise-receive0 T: a! ~- F* C  n3 n; s
;;
当前发生交易时收到的评价) n/ A" D+ \& W5 ^: [+ y( h4 r5 A
appraise-time
* ^/ @3 j# E* D+ W- x4 ];;
当前发生交易时的评价时间  `) Y; d& q) ~) A; M, H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& y, z( H. c- n2 E+ M' z
trade-times-total( u" K' v) f" x+ U: ~9 ~
;;
与当前turtle的交易总次数; Q; k3 K1 `% }
trade-money-total2 Q( Z' d6 n8 U
;;
与当前turtle的交易总金额2 e1 ^) B. [9 x: S/ N& u1 s( Z
local-reputation( t4 ~% |1 X0 }) t4 |
global-reputation' `* G( q# z$ i) L, V  T5 E5 C
credibility4 @) N8 N4 i8 b1 j# d: c) c3 e/ g
;;
评价可信度,每次交易后都需要更新
- m- s+ z$ @$ S, g' E& E: H/ xcredibility-all
1 v2 S% H3 [9 I7 w1 ]' P;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据, ~( y% L; J  H1 s1 J# [; o) G
1 e8 o3 o' |5 r7 q7 c7 a
;;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
. a7 d6 e, Y( w3 b7 x5 z  V/ Qcredibility-one& m# o- r/ u/ N/ C" F" t
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people3 a6 _  Q; [, R' q0 K
global-proportion
" H9 y9 W2 W6 p- `customer
: a/ q- s! ?! y$ X! j3 Z. q& w( Fcustomer-no
/ J2 @' j/ P' |" \+ c3 [trust-ok
6 }2 x: p6 {* T6 _7 Y. q7 \trade-record-one-len;;trade-record-one的长度6 u# J2 d8 s4 e/ j- o/ p
]4 f5 l. I+ V% Z# J$ l

8 w; q" q' z# C6 Z' S+ L;;setup procedure+ i# E5 @$ r; j  F% W3 D
: K+ W: i! n+ ^7 ?- n; Z
to setup$ t- Q1 r- G& I. Q  P$ E

; T2 f; v, ^, L, N) @% Yca

! d- y7 l( T: W. F( g: o8 h
' X! }7 T9 A7 r6 Tinitialize-settings
  o+ s4 }5 q5 U/ g' n

; `1 `8 W1 p; ncrt people [setup-turtles]

5 I: f7 e+ n9 P, s, {5 d- u# S# I5 B% h0 q5 ?2 p+ e' Q
reset-timer
3 G" v; d: I5 Z9 z; C% z2 K
% b" b" W' q, ~+ y
poll-class
% t* }( M, Q' @/ A' I% T/ [

5 Y- R# _1 X0 O3 g# Y) nsetup-plots
; c0 k  X6 p4 Z# m. _' P
1 \! ]* Q* v, V9 y! B& P
do-plots

" R2 Y( w  _; E( kend  }! ]$ l5 ?) \# _
, t& E; K% Z. [9 f* Y3 e; j* G- c6 O3 S
to initialize-settings
" X# U3 I/ z0 B" A, `
/ W; M8 P& }" w# K7 W( Gset global-reputation-list []
4 N$ o- \( [) E2 d" T% l% z8 P

+ c$ I6 U  H: L% Gset credibility-list n-values people [0.5]

( L1 x6 G3 ?* W5 k! m3 g$ _+ q7 Y, ?/ ^' _
set honest-service 0

* h6 w, G3 g% }' Y  P% B3 J2 [9 l5 X) g% j0 }$ h1 K2 _
set unhonest-service 0

, a. t" Z$ ]- ^, |5 Z' _- |3 B' G9 j. P1 u# r3 ?
set oscillation 0

$ G& A" o6 g6 ~! y, M: K
" H0 n0 }7 J$ Z- D, s: t! E. hset rand-dynamic 0

/ ~* |2 o0 }( L( P* v; ]; V2 Fend+ U5 x0 a+ W/ J

  Q1 y6 [* m$ Y) g! U; T( ]to setup-turtles & Y# J* _4 g# N# w
set shape "person"
, y" ?+ v9 @2 R: E( {4 Y* z, ^setxy random-xcor random-ycor" A9 D% V6 W% ^; x& p
set trade-record-one []# Q7 w" s6 K* b/ y
# z0 H% ^1 |" C' c
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 d* T: n. E; T

: r& e0 z/ Y* s0 {- N2 N) G6 ~$ sset trade-record-current []
0 ^. F0 h( F/ S; m) G9 F& ?2 Sset credibility-receive []  K  E% h+ J$ s* n3 ?* l4 \+ @% Z
set local-reputation 0.5
/ X, A; r% J% B  a, \- Uset neighbor-total 0- f0 h; _* @% c& v1 n/ Q
set trade-times-total 0- R5 j0 R. v  l& x2 p
set trade-money-total 0
; e; I- f: ^4 @. Q7 R; Qset customer nobody
! j+ j* q. k! Q  Iset credibility-all n-values people [creat-credibility]0 B& \' J% j. o7 L
set credibility n-values people [-1]- e0 }% X9 M3 M6 l% i/ p
get-color* x( Y  t5 [! i

( A, m1 y2 G( D- Z. r( e! e5 c! ~- [end
  F$ S) S- V2 j9 [' X# ?& [7 ?
" g* y4 J* @' U) ito-report creat-credibility! w! u, @' ]  a
report n-values people [0.5]3 n1 a) w8 m/ i! a" o
end6 w* d( N5 f  M, _5 f( A: u) n" @
5 Q# b+ ~4 C' d; @& I+ w6 s+ p
to setup-plots
7 D9 g( V: ~3 P, D1 J7 H9 D& |$ t: z, k* L0 C8 H8 n
set xmax 30

$ ?8 L& J3 e! W! L6 t# \& l3 H. v
  ~4 U4 K+ \. x" r; Wset ymax 1.0
4 ?. o' \- H' k+ q1 q* \0 U

$ z8 T7 s, Z1 T$ x. g* N5 eclear-all-plots

! |2 S, N! O8 n
# }; _$ G& m' N9 r  asetup-plot1
- \, y( x6 c$ n0 p9 D# T
5 e( e$ I2 |' l$ S% }  |
setup-plot2
9 o3 `! C. g3 b

0 r4 \6 s! Q* ?  L1 bsetup-plot3
! n  {/ x8 {$ `4 v
end
8 d' E" l8 p, _8 z% ~. k- D$ G( D1 j$ `) p# v7 X6 O# w
;;run time procedures
7 q! P# K  [0 y' P
9 X3 ]- @# i& }  F/ i5 Pto go
* d5 S, [- h% _& K4 \# |( G8 n" i# {$ E2 T2 J6 G5 I
ask turtles [do-business]
$ c" W9 G! x" Z' ~  h7 b8 I
end
; a: H* O& k6 Y/ x- |3 _7 T; X. @2 r# Z0 n: ~" a) W8 a8 P4 p
to do-business 8 Z) ~3 M' y2 R

) \0 C# O8 \4 p
. X4 U6 F; o) i  H4 ~  {rt random 360

( g$ @7 P, @" a; \8 L3 f5 {3 M8 [0 P' X0 |
fd 1
, p: I! F4 R4 r: Q

/ ]* c& j0 d9 v9 v5 eifelse(other turtles-here != nobody)[
. A( @# }. r! s8 I2 t

1 _9 Q$ T* S& \2 Zset customer one-of other turtles-here
& h/ g6 F; ]+ [: _1 x

. M9 x9 U9 Z- T6 D& K, E;; set [customer] of customer myself

( s) y! I4 ~9 {6 w( V' n8 o+ Z- B7 R" A, C! w! Z$ x. M
set [trade-record-one] of self item (([who] of customer) - 1): d  i' Q& x. h9 l  r0 q+ h( ]
[trade-record-all]of self( C& Z8 n% }/ {5 y' H  C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 R3 L. w3 R- y) ]* }
, ^* N  D) I6 _+ i" j9 F3 oset [trade-record-one] of customer item (([who] of self) - 1)7 ]: M) }. w; ]8 L+ ~6 C
[trade-record-all]of customer

- \1 T! Q) o0 o+ K+ }0 v/ ]  H3 u
set [trade-record-one-len] of self length [trade-record-one] of self

; q- h3 p0 l  j/ H% F8 H0 `7 C" f* t
set trade-record-current( list (timer) (random money-upper-limit))
* N  H  |$ f# N* Q. I$ q7 \

" s- J; t% [. p% P& Y) `ask self [do-trust]4 U! x5 `+ r( B. L4 _5 V' T/ T) P2 N
;;
先求ij的信任度
# o: J. U2 D; i: ]) I) }& u& y* C5 F! \# R
if ([trust-ok] of self)( P$ u2 c) |  z( W( [* Y, |
;;
根据ij的信任度来决定是否与j进行交易[
) n6 l, V7 e! D* s6 \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 n5 F/ g! _1 E2 U) k. K+ L: ?5 i% f) @& f  ]; y
[
8 t$ f! A" L1 T  i
0 {! R2 x0 {( U. \3 @# n: P& Q
do-trade

9 T, D8 T7 ~* D, u: [3 a/ [4 y" |
- D# o* i: o+ B. z" v( ^& kupdate-credibility-ijl
2 e% a+ x" Q5 l/ d+ _- J
+ P6 X4 D( P: b0 g- d/ S
update-credibility-list1 C* T( m' G) F- x
. D; ~# r. p4 _5 Y+ ~; `
! @$ b- M; |+ O( a4 [4 V
update-global-reputation-list

5 c3 m/ e/ j- A0 p  N0 o, `4 i
$ _, E# Y( o/ Dpoll-class

2 _; a: u# f6 n) z& H1 x, J) h! V" w4 B  ?/ v
get-color
, m4 y% _; s6 K1 Z$ l

+ f* S& n% N: u& ]& S  v]]! l% |$ ]7 f* D1 Q8 g  Z& F( @  ~

6 F* k- X6 g! U- s;;
如果所得的信任度满足条件,则进行交易
8 u9 _, |8 f7 @; {. _. n- g
; K2 n; m* `- M[

2 s6 H" k/ R- d
0 z: ]$ K9 S. R1 D# }rt random 360

1 }1 q. Y4 F7 X: A. R- T" |: K  C8 n. Z3 d, @6 X0 q8 u
fd 1

" s9 m( D* S8 q7 K8 l, p
7 L1 M$ W6 ^# ~1 i9 t]
- o, O+ S2 |' x

2 K  w, w$ ?5 E8 e, Yend

, f  v) a3 G- s7 f
2 g9 _7 w' r: o* ]to do-trust
5 ]+ A$ ~' t8 L( X! Kset trust-ok False' }) u5 X# o# ]8 U' K6 U% ?
$ C, C7 i( ^& G( _) t& h

/ Z9 T( L4 _% x' E9 Z: F& slet max-trade-times 0, k! C: x3 Z. @. g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* O! o4 Y  i- H& q& v( N4 W, glet max-trade-money 0( q. ~* `* f% C4 N' n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' ?" o* a: K5 Z* g) B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 J3 x* y* N3 p+ [5 j9 _) d1 {' A& R% }. Y1 e% Q+ F2 ~' f3 L

# b) @; Q0 m" {2 P7 W- _0 rget-global-proportion0 S" o! B7 s4 C: a0 u: A# p3 s
let trust-value* W1 Y3 s+ |9 R: D; ^
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)

0 ^# e: \% s3 M1 f" O  w; Nif(trust-value > trade-trust-value)
# ~; V4 E) [" y' F' k' d[set trust-ok true]* z5 |% ?' F0 H% j- |8 e; j
end
9 x4 o: W" y  I' A1 m7 n7 @8 U
9 E! _, }1 p4 ?8 J* V! _) cto get-global-proportion
9 d1 v1 r5 e' X3 qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 n) Q" D* v1 D4 q2 A  m[set global-proportion 0]
* S" A/ n6 [. l, Y+ Z1 b/ J' F+ j[let i 04 F% @5 m* J5 R# |
let sum-money 0( j$ D4 b* K6 z
while[ i < people]5 N0 _& |( R- D5 a7 Q' h/ G
[
) o4 j! E6 _" R. u' _2 T0 [2 kif( length (item i
+ P. K% c% I. i3 y: Z[trade-record-all] of customer) > 3 )

3 F3 h  `& g+ K( e[
" f; U0 ^% K$ ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 Y! M$ S5 @" k% N( |]; t! @5 @7 ^8 P, l" ~
]
' O/ W: |* ?/ `# [4 Q+ [+ Rlet j 01 s' r& k* P% \* G0 ?4 G8 t
let note 0
& O9 ?# Y; ]+ l9 ]4 @while[ j < people]* S( \4 f* f( b, [# k7 {2 ^7 w
[
; p: h5 t' B. e' hif( length (item i7 H" L5 S' z) j- p4 Y3 h
[trade-record-all] of customer) > 3 )
9 R# T% l. I. [: X2 o
[
' \! |" v7 h0 {ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ H, K! J, H% ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 V) D# S& z; ]0 a. v, ~; O) b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% S3 ~$ @8 `4 s' n4 }
]. ]( ?. U0 [( {7 s
]  X+ K9 }' `, _' Z9 Y
set global-proportion note
. w) n  v$ M& r4 m! x]% E6 _2 ]0 F: z9 q' q8 R
end
4 {2 u, j8 g* k# A  }% k6 _/ Z
( v1 l, y- G  U$ u5 f. j: qto do-trade
8 ^- j' W8 r1 o+ p) o;;
这个过程实际上是给双方作出评价的过程/ B; W" j# d. V6 w- V' A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 v3 y4 P* A  p6 V) i* ~$ ^8 Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 m: R% U- C- q' e6 l; Q+ Y2 i, U" C
set trade-record-current lput(timer) trade-record-current; f1 C" }0 k% O! R+ J
;;
评价时间
$ ]6 F" u: B: H- Y* lask myself [" A5 ]. f) }$ n# [0 P1 \
update-local-reputation& S  N5 q3 T$ ~# b; D; C2 l2 m( w
set trade-record-current lput([local-reputation] of myself) trade-record-current4 z4 T; O4 c2 v$ r/ f* l$ D
]0 I! Q8 q* `8 G* y! `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ y; F& T8 s  L! A# o* h
;;
将此次交易的记录加入到trade-record-one
. r+ s$ Z% |# C. pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 {. S+ q6 D0 \let note (item 2 trade-record-current )
( n, S& M; d% O1 e3 ^set trade-record-current
- v7 K2 F- F; [/ _4 H) [" K. y(replace-item 2 trade-record-current (item 3 trade-record-current))
+ q$ a  b# c6 f% n) w+ g1 j( }
set trade-record-current
# K+ P' ]1 b3 P- W5 G& A4 F! G(replace-item 3 trade-record-current note)
# d2 I5 D7 p+ [; z6 ^' h9 Y8 p7 y3 K+ I- Z. Z
1 X* N! C  z) y9 T
ask customer [( N7 x* w' f6 v- q1 ]" S9 ?
update-local-reputation
8 H+ M3 s( v/ n: ~' y: \set trade-record-current
  g/ e8 q4 T" ~0 ?# E  a8 |. @: ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 e7 V, W- }& ]6 ^. b7 \! q
]
, U7 ?. c/ F! |! v9 ^# K
) c& b5 h2 I8 C3 v, I) Z) X0 i  d

, F$ Y5 @9 a' c4 q* uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 h$ |0 s& S  N5 A; D; G; z

' v1 a4 o$ w. pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( L% O/ E* d/ R# J5 M3 [4 O
;;
将此次交易的记录加入到customertrade-record-all9 k: _& H! }3 q, V: w
end
; ~/ ~% r2 k) ^; Q+ E1 @6 e6 m; Z
" d2 F; p% K1 m: t' ?+ h/ ?to update-local-reputation
2 y9 x! |; [% r% J# Yset [trade-record-one-len] of myself length [trade-record-one] of myself
% |  M1 s5 q5 r1 T# V+ d3 T4 |+ V
9 [+ w; ^. e0 |& }+ ~: N6 ?2 x: I3 d8 u0 y
;;if [trade-record-one-len] of myself > 3
+ S) u4 D2 T8 b% H7 V3 m
update-neighbor-total
4 A0 G+ ^, L* T- B2 e4 h* g;;
更新邻居节点的数目,在此进行
7 `1 j, Q2 c# W6 k6 c4 u% Wlet i 3
9 K. R" k+ `3 Z% s# h5 ^- ^& Elet sum-time 0
' W8 p# z2 \/ ?% M; awhile[i < [trade-record-one-len] of myself]. D% V! j! O" p3 S! A$ u# M
[
* w+ a% V- s! [: V4 ?& v5 mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ p6 P! |# E. V$ @% Y8 v: x* B4 Kset i4 r% O5 J0 |; v: w4 b
( i + 1)
4 o( m' |6 y5 s8 ?+ q6 ~
]
- y; O# o6 A) h0 V  o8 Y6 c+ q1 zlet j 3! r9 s; \, d, o6 i  X5 [- x3 d- A  L4 c
let sum-money 0, P7 k9 m6 }7 w3 s) M' }: i& ~/ P' r
while[j < [trade-record-one-len] of myself]
8 W0 I" P3 A+ p0 S) y[& y& C; S/ P5 n
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)
  ]8 ~: t, j- Y/ aset j
9 H" B$ v% ]  B* W3 l( j + 1)

6 G/ Q- p# D5 o4 K* ~: b( y' c- K]
, F" i# }) c4 d9 Zlet k 3+ r3 j) f1 ?) O0 _. J2 o  k0 j
let power 0
. V" u$ r! G& p, |$ n2 clet local 0
4 \1 w1 _# u1 v& [% wwhile [k <[trade-record-one-len] of myself]/ y6 T) k) B- J1 Y9 J6 ^
[
5 m1 k: s/ o0 z- Q/ cset 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)
; m6 `' ~$ w2 E, D' Tset k (k + 1)" d0 s; w  Z! d; K5 N  l
]: i7 c$ Z$ }, h5 U4 g" ^
set [local-reputation] of myself (local). g/ J/ f1 a* g2 N/ o( o
end$ [# r$ g1 b5 V# S3 Z& b

" V2 A, x* i4 r' W, g2 X9 Wto update-neighbor-total; d% H! {- u/ Z) f) \5 N( ^2 G
3 K7 r5 _: v  E. Y1 r  p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ s$ {: l$ n5 P
3 _+ q3 u7 K, Q- W7 Y2 s
6 V  X' B8 \( H7 F9 V4 M$ i
end
1 A$ ?3 H4 G0 D  ~" p! }9 Z" t& `9 P
to update-credibility-ijl / o7 p  z4 i1 c0 L, g5 R+ g
1 {, A7 A9 V: N- ^: a( P4 N
;;
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 V/ n1 ~" y- V$ `$ r9 j1 p) wlet l 0' A* }; E- ~  f# F  M) G
while[ l < people ]
7 u6 f; `+ d) c( h! X- z;;
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- I3 O- ], l0 Q2 K  y# s- o& `  D
[+ _  T' J9 m5 i$ z/ `# a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 Z( k# ]) U7 L* X2 {. O$ x7 E% iif (trade-record-one-j-l-len > 3)
+ A3 p) i0 Z5 q[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 d, @; o2 g/ R* j+ B) f
let i 3
- z: t0 Y) _% {  H: c1 \let sum-time 0/ X! }, ?) U, t9 r3 n
while[i < trade-record-one-len], P$ i& x8 A* Z" M
[! e) ~2 {& B& z  A7 I* R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 S8 s# ~. B2 Q9 {* Nset i1 x0 U  U% L& C9 F. u" }. P8 \% p
( i + 1)
: G- g# f9 r1 G- c
]
  \7 l2 A6 a# zlet credibility-i-j-l 0
1 B# H$ }+ N0 U% ];;i
评价(jjl的评价)
1 _0 V* f8 r" ?let j 3
1 w/ \+ f' }" Z0 M1 G* q5 N4 M9 Blet k 4
: r& m5 ]5 @; H( d9 ~6 {5 bwhile[j < trade-record-one-len]' I+ M0 g" \- T. i0 V* q% c/ S8 Z# H
[
& b8 o% I) o$ |$ f' [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) Y! }1 F/ t+ N+ g0 w
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)
: y0 @, P. [9 s& G! M+ _' lset j
& m5 D0 {  O( k, a0 A  o( j + 1)
* u. \( C2 Q* _6 k/ ~
]
; c+ i- l3 G7 v; c) v$ yset [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 ))+ m% J# @( ~8 A& [- c5 Q7 V/ n

* F; `7 m% r+ y0 @& e( N

, V% u  B" K( X' i9 d( @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ |) Q* S" m& Y;;
及时更新il的评价质量的评价' C8 N8 D: n. m- r! ]' _: g2 h7 }8 u& X
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* [) z" Q1 S/ z1 |
set l (l + 1)
( v. {- f1 ~; P( w/ k5 S* Z]9 l' C3 g9 o0 k
end# V; r% b) {( y$ A! z1 ]

) W5 `1 N: a1 `+ u3 `3 H5 G  @to update-credibility-list
3 W) G% _0 K& E$ N7 M1 E% r3 klet i 0
$ [$ |; v9 F7 Z2 G, F" x" a9 @- ]while[i < people]  m: o( M" Y1 [0 z" z3 U
[: @7 R- }% c" `7 w/ k4 K* d- g6 x
let j 0
- m& q/ s% Y$ b0 t" u2 {. S# ]' ?let note 0
  X* t$ }: l" X( ?: P. F5 nlet k 0
8 y1 \* s( r. T" ~4 {;;
计作出过评价的邻居节点的数目8 X# A, Z, [1 c+ ~
while[j < people]
( d0 _% d- P! X8 ][0 F1 f; H1 ^6 l+ p/ V
if (item j( [credibility] of turtle (i + 1)) != -1)
$ ?; ]0 @& ^: R" J; s6 @;;
判断是否给本turtle的评价质量做出过评价的节点! }1 i; ^) t0 V! q
[set note (note + item j ([credibility]of turtle (i + 1)))1 M6 {  H' O2 I9 N2 N
;;*(exp (-(people - 2)))/(people - 2))]

3 }, J$ e3 T. Wset k (k + 1)7 }- Q* }0 s5 [6 n! C
]
( L. E& e' ]3 _: z1 lset j (j + 1)
. W, O3 n1 R* g& d, Q, ^]8 e+ Q: ?2 U  }+ }2 W7 \
set note (note *(exp (- (1 / k)))/ k)
/ m% g% T: }( [% Yset credibility-list (replace-item i credibility-list note)
' `/ r* c! k) \/ Pset i (i + 1), [" L' \. a+ }3 V  k# S% X
]
7 D1 h& I6 x6 T; J  ^end
  ^9 X% x$ W& }1 |* ?4 \
( G, L$ l# j6 ~5 J1 Y! O9 Yto update-global-reputation-list( l$ z9 x3 b4 K
let j 09 c( l% V0 G- P
while[j < people]8 {, z7 [& G1 R
[
( @% d. m+ R  A. P. b5 F% ~$ Jlet new 0$ n1 ^& ?- m3 r1 e6 \; \& }
;;
暂存新的一个全局声誉
" e  C, k  J/ W; olet i 0
' _' r, }" ^3 L" ]0 W3 slet sum-money 0
* d) t( Q2 O" M. Klet credibility-money 0* }  k: l, T4 `/ e& x
while [i < people]
. C8 Q  H! C% k) x, `6 |8 J5 R& X: P[
7 q* f! M& w: h) sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 a5 Y- |% c: m8 M8 N) R' n2 O6 h; i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 }) G, P2 A3 g/ D. Tset i (i + 1)7 z% g  w/ D, \; E7 {3 W# D) Q
]
, {1 u' N% {( R' ]* C' w2 V/ `let k 0
0 @4 N& S# t: P# T: ~( F* ^let new1 03 m8 _# E; ~( Q4 F, b
while [k < people], a" n( k# x- V% Y- j* m
[' q; \5 I- h' ~6 @' [2 w1 K) W% w2 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)
) o" z4 u8 Y) lset k (k + 1)
  @! y: U1 Z) v8 k6 a7 V. S]* z& Z3 h' o) b2 P  g4 i, i/ N( P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , ]  r: S8 h$ ?0 v
set global-reputation-list (replace-item j global-reputation-list new)
$ X6 G1 [8 h( h7 v# N7 C* i4 @set j (j + 1)
& f$ V& T* _! U9 [% e]5 v8 H4 F4 h+ f0 Q8 c. J6 e+ j
end
* w$ |3 Z" r) H8 L9 [3 N/ m+ o8 c9 i4 h- ~# ~/ S

0 a0 h, j9 K& n% _+ {3 p9 J( g
% ^1 w# \6 q' A% N& v# V+ Vto get-color* a- p* ]4 M# z$ O/ m# g" s

% |4 a( F% v) k: c  aset color blue

) o/ L; n0 I+ L* z2 |end
  {! x7 \9 a- k" G/ L9 Q3 J5 c0 R; S
to poll-class
3 j3 ]; u  s  z( Cend
5 M9 D* x: E7 O8 n2 D  |8 g9 c, [& g: c; A
to setup-plot1
; k" D/ {" x  v& N" ]
  Z; M6 X% x1 tset-current-plot "Trends-of-Local-reputation"

6 v/ U9 `' I* h# m7 s5 I% w( N( k- ^; T0 A0 c4 N0 O
set-plot-x-range 0 xmax

4 R* F9 G4 R$ `; g: s1 `9 k! o- r: {9 a1 b; ?7 @& E1 R
set-plot-y-range 0.0 ymax

% V) Z5 G' n- F3 F0 ^end
- H) [+ Y; a$ G9 r; r* M4 N! L9 i1 z" j- N* N! U3 x
to setup-plot2$ w, i. v2 E' c8 |2 i; H8 s/ D
+ Y" F% e( x$ Z' x) U
set-current-plot "Trends-of-global-reputation"

+ n* u8 G  W5 I1 U) D
5 c; I1 _7 d$ r) r1 E5 [set-plot-x-range 0 xmax
( r% D9 X# y# ?8 o8 g) I8 Q
/ X4 E" g, f- P
set-plot-y-range 0.0 ymax
' {; z( h0 i. q( _7 p) g
end
9 @5 N, Y/ G9 H0 s% p' {/ h# [; @6 _) R+ v# n8 u
to setup-plot3
8 t  b7 [. ?. U* g3 U, v3 Q* l, x/ Y$ ^+ T' B6 O7 {" ^% P% P
set-current-plot "Trends-of-credibility"

' E6 V0 W$ `9 q
- g- c) K6 O8 z& I4 Z2 P1 W8 d9 r- vset-plot-x-range 0 xmax
  G5 f; X6 g4 Y' o2 q$ k8 ?3 x6 s
4 z3 D2 W4 I/ k) }# Q/ v: {' A& V
set-plot-y-range 0.0 ymax

) y7 g9 |+ A' w6 u* N- R, i) r+ gend
- ~; y2 _, V% Y) A. m
0 ?: m# G1 t0 uto do-plots
/ g3 a& i3 C! s# y! d/ U, y6 ]# z& tset-current-plot "Trends-of-Local-reputation"
  s. B5 x3 g! L5 Oset-current-plot-pen "Honest service": l- k: W" I0 N3 @: F
end
/ k; a3 P1 l( L# R! M9 \  V5 Z8 \( S3 x, n* M
[ 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.
4 z/ N3 V: a, _- _0 G2 _5 E. a* t' P) C. T7 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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