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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:# _9 S" V: H, J/ V3 ?2 {
to do-business
4 J  c& m* g9 e, V1 _& \6 V* i rt random 360( c8 P. D7 T( }+ [1 J: e9 D
fd 15 {! Z' D3 f* D0 ]
ifelse(other turtles-here != nobody)[
; [% i: R6 Y" s) R6 U1 y7 |   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.
; J  v" Z' G! x5 d6 t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; z# a4 h2 \. I) @: B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ d* y: y) ]+ G9 W: H   set [trade-record-one-len] of self length [trade-record-one] of self
3 z( d7 f" U( d   set trade-record-current( list (timer) (random money-upper-limit))+ E3 m; w9 L) v$ U* a0 w7 j3 R: T% I* Z

$ Q: b3 |7 o% j/ H! ]5 R2 j问题的提示如下:; n$ C) o' l+ p3 x" ~0 i0 K" E

$ F5 E7 F& F: S: |6 E0 ?error while turtle 50 running OF in procedure DO-BUSINESS
1 s1 i2 K% `# c6 j  called by procedure GO4 e. ^) W2 t+ I' r* {8 Z: Q- q1 ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 ?1 d  m; N. q' q
(halted running of go)6 M2 E0 ]9 o% N, X

% K8 v( K+ w7 H" K+ n1 {! V+ w" Y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~~+ N+ `/ F) X% C! ^8 _
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教9 Q- G) Z% ^( Z4 \5 g. q1 L
globals[
6 t6 F4 l' ?+ s! Rxmax
( y$ _+ K+ X; z! Tymax
$ D$ ^" j: v5 }$ z" D6 Wglobal-reputation-list
& L) x1 C$ K9 N0 K/ d, u! l* T1 A% c% H
;;
每一个turtle的全局声誉都存在此LIST
! M+ S9 a4 n- J8 @+ f- Acredibility-list
' e" B. z) b" W* E;;
每一个turtle的评价可信度
! c  |; h8 G4 D4 L: P0 hhonest-service, V' w1 ^4 z- H/ ~9 f% \4 f
unhonest-service: N7 Z7 h, m) k$ b1 B1 W# O" e
oscillation! P" e6 F- ]* N6 b
rand-dynamic. L' I0 M4 T* b! H% ^
]6 Z1 Z" e% _- b% b6 O# q$ Q3 r- h+ E

1 H) ]' V/ ]! s0 u$ [' V2 [" mturtles-own[7 ?2 M1 R' ~  O8 J5 @" g
trade-record-all0 d% S# {$ O: n& W
;;a list of lists,
trade-record-one组成( {1 }5 f0 U9 Q/ k
trade-record-one; o) i; q5 U9 M2 I
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( j/ M. J' p- b' \2 [- p
7 ^  q( O4 y2 q! i
;;[
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]]
& p0 N: Z3 _1 {  p4 f" f& itrade-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]3 _/ @& {0 d* |" G2 O9 V3 j& H
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# d; [: ^/ m+ F. x
neighbor-total
* P* j- i; J1 H' z3 P  S;;
记录该turtle的邻居节点的数目
5 e+ ~9 m& ?( |trade-time
% j6 A+ a5 m& Q' o8 Z( T! Z;;
当前发生交易的turtle的交易时间
' w( ?' ?% ]- H9 x7 iappraise-give
1 C0 G, V- X, R9 T" O  j( A5 ~;;
当前发生交易时给出的评价$ z5 [! Y# A0 Z' g
appraise-receive; o8 g0 v. w0 c) x5 M+ a' D% \
;;
当前发生交易时收到的评价
9 J6 A, |5 e  |3 r( W2 wappraise-time! b* K% @$ g7 p: U3 f5 o% ~1 b( F
;;
当前发生交易时的评价时间, ~- a) \" C5 y& n) ]6 y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ E% r5 }; ^8 P- ^+ i5 K
trade-times-total
" B1 ~$ O0 b6 r1 y5 N6 B: ?;;
与当前turtle的交易总次数1 k5 |$ U5 i$ M" M/ _
trade-money-total. Q  w# I7 v4 `7 ]9 y7 C, l
;;
与当前turtle的交易总金额
4 w! R; D9 U. e2 C0 H  C0 elocal-reputation
2 t/ O: o4 d/ Qglobal-reputation: m0 C" R; f4 l' {
credibility
6 O- y1 {& Z; I;;
评价可信度,每次交易后都需要更新' e+ v# j2 Y. r, k9 e6 {! W- t
credibility-all6 }; d: J3 y9 T  L
;;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  k. C. `1 n. X! x# b$ W1 l
+ o: b. O) w4 ^: m
;;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
5 X% ~. x6 i- W: {* [' z7 Lcredibility-one) S' D& g' d' o4 H; c9 J) k, ]& U4 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
) T5 A! ]  s) o0 z: Fglobal-proportion
" f1 L4 u6 i9 @. L8 Vcustomer# g3 y2 ^1 @$ {9 q
customer-no' _$ `+ L- H' E0 s
trust-ok. n: U9 V4 E* ?% ?
trade-record-one-len;;trade-record-one的长度2 Z) B7 k8 g7 v" A& I
]4 D. n9 c2 P7 O. o5 d. V0 z

5 W4 v* U- `6 O4 ?& Y;;setup procedure* c5 `2 ^2 R' ?  P6 B, ?0 V* |: m

, {" h" ^; g7 {! gto setup
& `. }4 B+ }& b( `
/ z& A; V: F1 u# _7 u% aca

/ N/ X( |$ [, [& ~  l* t7 L0 G% _. Y0 u: K
initialize-settings

1 R8 v, x4 f" p  t8 q2 A$ k! z4 }3 _1 y
crt people [setup-turtles]

& w# C; O; e/ C8 A+ N: _# J8 e6 `8 @
0 Y! D# E# W7 p0 t* E4 M- mreset-timer

; |1 h5 \4 r- V2 F
; O" ?5 _) B7 Z- y# gpoll-class

, p# F# q# D% z2 |. T6 }; v: U- G3 ?5 `* N$ h6 x
setup-plots

& z+ L$ P1 i4 l* b* W: w% S. r( F- P- {
- E( d4 S7 _' Jdo-plots
+ C7 n1 a8 S" k% G  P7 ^
end$ v3 ?, _" ^/ K4 t' D

! H) _9 x* D& ^+ W# S- Vto initialize-settings
# g1 `2 [' h+ ~4 E. \% L
! a2 I$ ?/ F5 Jset global-reputation-list []

/ Y! E4 [& ?! ?, B9 U, I. }+ `0 \* z- M7 @" M1 o$ k5 C0 ~' J
set credibility-list n-values people [0.5]

! {, i* x/ V1 R+ r8 W/ w
1 S. ~( `7 R& b4 nset honest-service 0

+ t/ w# W( `2 c; A# o& b
$ d5 w  t% p+ G# r0 ~set unhonest-service 0

* h; u3 S" z' p1 I/ K9 L  {# q
9 e7 m$ _7 G' E2 c1 P  Oset oscillation 0
. V0 M6 t  a1 H, x( w: I& P4 A8 @

* c/ ^; Q$ v5 w' f% hset rand-dynamic 0
1 M' K6 K( `* ^) G5 r8 N
end6 U0 T/ m2 W. ]% Y
5 _; B' J. y& i+ l) E
to setup-turtles
+ ~+ [0 O& p. v3 W3 ^set shape "person") l3 R* Y1 o1 a6 X
setxy random-xcor random-ycor
3 X/ s; E! M0 g9 E( L4 Tset trade-record-one []
8 e4 ^& l  ^1 G8 |/ o6 C( l
4 f* {" o; o% G3 {6 }
set trade-record-all n-values people [(list (? + 1) 0 0)]
# q3 d0 D! [) Q( a( }
! Q+ G: u/ H9 M; @$ O) j
set trade-record-current []; v  h# s7 G: S0 v2 u
set credibility-receive []
5 C7 S  F0 t% J3 V0 c( uset local-reputation 0.5
! \- g8 T. j! i6 c. I" Uset neighbor-total 0( u9 S3 _/ d% s
set trade-times-total 0. O$ U/ D) \' Y1 y
set trade-money-total 0* [$ o3 A) f5 V
set customer nobody9 w3 B( s7 V, {) S3 `  ~
set credibility-all n-values people [creat-credibility]
2 g& q3 Z4 S- {% Y9 O: J' Mset credibility n-values people [-1]
1 `# g* s# p$ \3 l& O* lget-color# j9 x" @5 z* W/ Y6 ^8 f; d

" k  c9 r) m& a0 g: ~end. y# R% `) e- [6 e6 T/ d* L  f

  f! p8 S, w' w, Q+ k. }6 Mto-report creat-credibility
$ t& y' x5 g5 P8 _5 t) y9 W3 t1 z# jreport n-values people [0.5]8 R" j. \3 B! S$ a9 B5 e8 k1 w
end& j! V+ o, f: b( }

( p0 P# Q! ?9 A+ bto setup-plots
0 ?5 [$ D8 ?% A
8 d; o+ A) O6 b2 f  L2 pset xmax 30

" b& _+ B7 r# f- k! j/ R! `; n5 Q6 n8 _  O# z+ J
set ymax 1.0
; w* D8 ~/ S  B' R
: l: T% F# k: J3 u8 j9 S
clear-all-plots
0 W# N( d4 T# X) F7 D; t
) a7 O# a5 z. o7 b- i5 N
setup-plot1
- x; j- l5 Z" a7 F: X  L5 f
2 r! y0 t% T( \) X% `2 j( a
setup-plot2
: T# b) M# l( m! M/ @& n

( G0 L9 G" D8 t( K& M2 q$ ksetup-plot3
  _+ v4 A8 q+ e
end
2 T0 H% p$ t5 Z! K% s
; Q+ f+ e" ?9 H2 _' ];;run time procedures' ^: S+ t+ P( s; p0 h. E" y$ N

/ G. L5 [! f  }. w$ Vto go- a% V3 B. ^) E

, v6 A) j9 X0 A+ N- ^2 S7 L% Bask turtles [do-business]

# F* p! s4 G$ i7 ^* I* wend
3 r1 ]. H  W6 L0 f: x8 @3 @) Z8 M$ E) P
to do-business
; s4 \  B# U' m- _- \+ i

( m) R' O- ~1 F+ T" R; Z- b# w9 v# V6 }% N7 m- ^! D0 ?
rt random 360
, d* f. N, _$ P4 P! }% g, v6 l
( N! s1 s: ]$ A1 x7 Q
fd 1
. a8 S& f5 V3 r7 y3 {8 R, s

: G! I: ?3 Y  O: G5 J4 ]ifelse(other turtles-here != nobody)[

9 H+ c+ J: ]8 t4 b/ U# j) r8 d0 B* S( M' U. q- P
set customer one-of other turtles-here

9 P" w  g/ ]+ i: y$ C- K3 C6 B( x1 J2 F4 X' A' I& N* f: B
;; set [customer] of customer myself
3 u# h- [8 f1 r$ u0 H" x
- x0 l& u8 U" I0 J5 q6 i
set [trade-record-one] of self item (([who] of customer) - 1)
/ q) ~* ^' m  a1 X- Q$ r[trade-record-all]of self
% m+ J% t$ [+ P5 r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# x& \' U6 H1 J+ _, J" O2 V
; G! ?) J4 y: N' y0 K. Rset [trade-record-one] of customer item (([who] of self) - 1)9 ^" `& C3 `% S" L( N
[trade-record-all]of customer

, i4 c) [/ A* C4 r0 T3 D( ]
3 Y' i# t' s# u# b% W- v3 \set [trade-record-one-len] of self length [trade-record-one] of self
5 r; q9 d# W  T+ @5 g
* l( `" P% d' j" X* |
set trade-record-current( list (timer) (random money-upper-limit))
" _( n9 p/ `1 @& m, `* J

5 R% v* w, X* o& _0 iask self [do-trust]2 t7 F. L+ A' Y4 y& a5 [+ k& W- S
;;
先求ij的信任度. G- U* W. n, d( _" d% ]2 l

4 a8 @6 e5 ?# a; }* _# f& z. x9 _9 Uif ([trust-ok] of self)- ?& t% l1 k& Y' [/ y. F
;;
根据ij的信任度来决定是否与j进行交易[
* o+ ]. ^6 L# ~, n  ~4 e- v1 \( M" hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ a8 j+ [( @* s0 V5 @
% t: i" h5 R5 j6 X6 y( X1 j9 \. Q) r[

4 j7 _$ P+ N+ |2 J% c  s# [& R: q  Q$ `' T
do-trade
- w9 d& ~. \: k. _
" G( }7 q, g0 G4 @0 F1 O* C& n
update-credibility-ijl
: c& ?( i0 d  g  l$ E$ g
! n+ ~& H, F" }6 R
update-credibility-list
" j( s4 L' D6 i! h6 `% `& Y0 A8 x
- t& x, g) I! A

0 C% Y2 P4 }  J+ m( w3 b) supdate-global-reputation-list

8 J. ]3 {& e. P7 h5 k# K8 r
3 l  e8 H) p; \poll-class
' O. j/ e1 v  V8 ?* I! Z) U

5 N9 L' c5 u4 E1 M3 b3 _6 [1 Y* u, Kget-color
- v/ i' h. Q0 I8 k2 G

9 M6 ]4 u- I) D$ j# J: e  []]
! K( o% u5 O* V+ F( K
0 M1 U; o* r- E9 \;;
如果所得的信任度满足条件,则进行交易2 w. ~6 l. A! i, }

3 _( z" s$ `" s) Q) _) m4 i[
2 B7 e$ ~3 v/ m3 `8 R  }

3 |0 N/ M0 f; A1 krt random 360

! N4 k, E2 ]8 d" U
* w% N( J2 ~( Gfd 1
7 C: d! x% J0 m* {2 G5 g1 _

1 ^: y8 {) C/ R' r. c' F6 H9 R]
6 ]  N, T. O+ Y& r+ w: v
1 [' Q) e) U! {: j/ Q
end
, O9 G7 h" [( x0 H" |
7 ]. g7 a# Q& y. L, ~! }
to do-trust
, ?$ A. u9 W( B- Nset trust-ok False
3 T( Y/ Z7 d; y& @/ s
$ h$ O$ i' X) |3 ?1 @+ D" K

* k6 w" I" U" P4 E3 W( Hlet max-trade-times 0; v! b/ B! w3 E; \/ T7 C" d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, R' ~# i( a9 u. V0 \0 ]let max-trade-money 08 C- [5 d- y  B+ f, T$ G6 T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 A9 @8 M! S7 x, 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))7 Q# P: F, c$ M6 x
8 H6 l; ?3 c' O; l9 o: Q1 h5 y1 |

5 k6 p) T& j5 E7 xget-global-proportion' C1 T9 G! b! q, m( [# @' [
let trust-value- H* }' x& V) k
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)
- i; v7 C1 R# J. l9 n# l" |6 N
if(trust-value > trade-trust-value)
/ s' ]) o' j6 e' W1 Q[set trust-ok true]
0 x1 U+ u: A! W( d# `9 `6 rend7 H# s3 y9 w8 {# }5 y: u

& [1 j/ S- b3 `4 nto get-global-proportion) H" e5 T0 h+ J$ }7 q% o- W/ S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( E' e! T6 Y' t7 R' v! p7 M4 S[set global-proportion 0]
/ K3 [1 A, P; A* g3 b6 S8 a2 H[let i 0: S8 _# R& Z) U) o/ W
let sum-money 0  l1 p( a, M9 P) F
while[ i < people]% i. s# [# A# _5 }
[
7 N" \9 z4 h: jif( length (item i
& M6 ]% s$ c! }% B, z( s% b, B[trade-record-all] of customer) > 3 )
- ~, ?1 |' A$ N' H! K
[
6 ~7 t  i  c& Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- m1 s- R( F7 n) x4 A, O
]
5 q/ v5 F1 L# B7 |4 r* i& \]
! `1 }  S# {, Plet j 0
6 O  c- U4 s& Tlet note 0
: V3 K4 B: y8 L# z% g9 Mwhile[ j < people]7 D9 M, F. W3 y
[
* X0 S1 I8 ^3 R8 L; _) f8 Fif( length (item i. ^4 A6 p2 S. E9 b$ w
[trade-record-all] of customer) > 3 )
" W' R& J9 T, Q* K
[6 z, ^, g' o0 e) }0 O3 U5 b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 H7 T6 u; {0 Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 I3 @) V$ M8 ?& l& f! r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! u& r6 j/ Z0 H]. }' j" \* G4 m! b
]
8 }; g/ b7 k9 I5 J& n! Q% iset global-proportion note
5 e/ k& z' G' Z- i! Q8 h" b- K6 b. ^2 |]
. P* C* ^0 S- j; Y: O$ V: |end
) w8 I* D# f5 ~- P9 |# y/ H0 Y3 X1 Q7 j, S
to do-trade- v8 Y7 r4 Q' r  B) O
;;
这个过程实际上是给双方作出评价的过程7 P  R' ]3 `1 }3 S& [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ o3 E) e% o" S9 v5 E/ ^, y; R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 m' O* u6 Q8 v8 c  k
set trade-record-current lput(timer) trade-record-current" K2 U. {# W( f+ A" r
;;
评价时间5 Q4 i: j: C* a) p
ask myself [
9 `: R$ Z8 _# G5 b& E" u' Tupdate-local-reputation
7 ^- ~5 b: K  |2 c9 vset trade-record-current lput([local-reputation] of myself) trade-record-current- W) ?7 F7 [  @4 E) u# _
]
% N$ ^  D; i$ ^3 Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 L$ _: p+ t% m+ t+ p" v
;;
将此次交易的记录加入到trade-record-one
5 g1 x3 v8 N5 E: N6 Z% }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- ^4 i' @6 ~- B& X; y
let note (item 2 trade-record-current )% k1 j. h! S9 T6 ?0 y! P! `, o7 T
set trade-record-current+ ^  ?! G, o- @. i; @! ]! _
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 G* A6 ~$ N# Q; {
set trade-record-current
7 T/ w2 T& |6 j2 U(replace-item 3 trade-record-current note)
) B& V" W/ r9 }5 a6 c5 A
6 N6 `9 v' w$ s- O# C
* j2 s8 D+ A# F8 g$ g+ t) ]
ask customer [9 Y/ d5 V9 y) A, M* `0 R7 K
update-local-reputation4 ]/ @/ K) K; j1 J- M' Q
set trade-record-current
# B7 E3 K, _* m* y; G9 z9 E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 M" L0 F- h  Z8 Y- V# S]' }% W. @# }, n; w/ \! o

. D" q# g  X9 o, F3 G4 ?
" p" r! d( i6 y3 [  k5 K! m0 f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( h: V4 d. o# ?. b
+ i8 X7 A' T# S7 t- f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 J1 S( J  |8 U; f$ h1 e0 v
;;
将此次交易的记录加入到customertrade-record-all
" P5 D6 K/ |" E4 n% n, `2 gend/ v3 I5 {# m& I" q
! H& r' X7 @' i9 `: \( K6 B+ r& U
to update-local-reputation
9 D2 x' a# J! i" e# q3 sset [trade-record-one-len] of myself length [trade-record-one] of myself
( u) P% @. x8 e$ _' O3 X
7 m( u/ D+ Y1 i! \" m% Y" B) M6 ?' q. B4 B. `6 J
;;if [trade-record-one-len] of myself > 3

# u0 ~2 Y2 @3 Q+ H3 H/ o% qupdate-neighbor-total# t: A! Z9 j3 n2 [( h& f
;;
更新邻居节点的数目,在此进行
" U, s# _  p! flet i 3$ p6 W+ H/ K2 Q% I
let sum-time 0
. r( v1 G4 r9 o  w: _while[i < [trade-record-one-len] of myself]) `7 `- h  H$ u2 V+ F- k& V
[$ L2 l8 E9 F* a: K! [0 R9 {* Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; `' ]4 b1 N6 m* p* r2 hset i
9 j; H5 [' O( d# B4 \( i + 1)
9 W2 ?$ [$ z8 b+ v# F% n
]
4 m( n5 Y) z% O/ Y% N$ Blet j 3# n' ?( L5 g7 g# k$ L2 T3 S
let sum-money 0
0 M2 C- `( s4 j; ^2 n3 ywhile[j < [trade-record-one-len] of myself]+ `; s+ b' y% }3 s) Z$ m
[1 c8 n% d" P  j3 W0 K- O
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)
) G# ~. W+ D8 }+ G* c. t4 D+ Pset j
  Q4 d' S+ f( a" b# s+ G: ~+ q( j + 1)

% M6 Q0 i. l! o]
2 U% q. l& ^$ P% m% U8 X1 D: A; c, l2 Clet k 3/ a/ V9 }% G1 N% e9 k
let power 04 Q+ q( j; L- F/ Q
let local 0
9 L1 q2 S, g* q$ Swhile [k <[trade-record-one-len] of myself]. x3 D3 \" G6 T, @' z! o8 `. E
[1 V" _) V; @, M0 n9 U: g
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) ! ?4 C+ _  w6 @! I) U# z
set k (k + 1)
! R7 U% c  k; S]9 M. w; p3 ~, T
set [local-reputation] of myself (local)4 Z9 d! c  ~+ }5 M/ {
end
3 z$ O: i5 P1 q* I/ }7 b- d% k9 S
to update-neighbor-total, Q. d0 H6 W2 d% A: ?# o3 }/ b, ?
2 T& |( {8 S! Z# a. m' s) E
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 K7 V/ a) n. [" a

& }6 `# D  }8 k9 r( c
, \$ d/ }8 p  ?/ Z; e( o' p
end
) G3 `2 T- b; v/ C) [) m  j& h; j6 m
to update-credibility-ijl   E+ A" _* X- }- s# ^2 L; b, O

. R9 Y* h* T: R# }, \" U;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。- W, E- b8 l  t$ `3 ~$ |
let l 0# m1 p+ F9 l% |0 o  h/ ~: Z  M
while[ l < people ]) @0 p& e" U1 m6 j7 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
! c& }/ u8 ?5 @" ^[* Y0 p9 y, d0 {6 u$ Q  }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# m9 X* E  z5 jif (trade-record-one-j-l-len > 3)" g+ w5 t* B5 N2 X8 b6 C
[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-one1 Y- J  A" K6 e4 f( ~) A' e
let i 3
# k6 c5 i4 N2 y1 C) Z) O: u5 C0 O/ dlet sum-time 03 A8 r7 f( F( a- k
while[i < trade-record-one-len]
# Z# [) D( B" U3 @[
7 |6 |* i9 c$ P! \# uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), u8 u, w* S/ }0 c5 Z/ V
set i
& ]/ e2 _  B0 V; i4 B6 D% k( i + 1)

( f6 Q2 `. G/ W% X: P/ g8 E3 _2 T: B]
: h* M4 `. t6 U3 q6 Jlet credibility-i-j-l 09 r; |) m6 V8 W1 d9 M% {
;;i
评价(jjl的评价)' s9 e$ Q, f' i4 `# ]3 S
let j 3) h7 w2 X4 k7 F7 T9 v" o/ U' A
let k 4; B" K1 u0 i' _
while[j < trade-record-one-len]" X: }: X+ q5 S( x: e) j
[# c: w0 T, ~5 m0 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7 n$ B" k. y9 P& X" n7 d
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)
5 v! v2 A# W% r2 ]- ]set j
" ?2 V  e8 a: T( K7 j# N8 M, B0 _( j + 1)

' Z1 K0 I! |; k, C2 b]: S# z0 f+ {* I/ |+ l
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 )); e3 M- g& H. B4 E* j3 X+ V

* c3 `3 }6 ?2 a. o, y2 V" o7 S
6 g+ @0 G/ \( a0 `) ~/ i- F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. X7 I: `% l/ q1 x# y;;
及时更新il的评价质量的评价
: }: Z6 k" ]8 u1 a, Y: @: _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ L1 o! K+ f( d( M# t- b
set l (l + 1)
* n* e6 l( L! K& [" Q]
& g/ y# O2 |% wend* w2 k" V) v; \8 d! C' v* o; T0 L/ m
* X2 I% a* D' u; l6 v
to update-credibility-list4 C3 }  q- S" d8 W. R$ {: |8 P
let i 0
# w3 Z( }0 d  v4 {while[i < people]( z% @& Y  _  z5 [6 Q4 w
[
/ J: I- r; I2 s4 N) @let j 0
2 |4 ^: i5 W) dlet note 0: }, f3 }: D3 V# ~. x" t3 M$ z
let k 0
5 e7 j; R1 ]) Z;;
计作出过评价的邻居节点的数目
, Y* i( e; H7 M3 N' qwhile[j < people]0 g4 ~& a2 g  \4 x" o
[
: p8 {; f* Y8 N, cif (item j( [credibility] of turtle (i + 1)) != -1)4 L4 f8 s+ s* K- `* g
;;
判断是否给本turtle的评价质量做出过评价的节点
% x$ T1 @. i2 p[set note (note + item j ([credibility]of turtle (i + 1)))
! r- Q& @5 l8 ~) V6 e0 v;;*(exp (-(people - 2)))/(people - 2))]

, o. y7 W' K4 X& H2 U* ^; Yset k (k + 1)9 H) H( Q$ `8 ?, x9 u0 `
]
7 P+ k1 t' b$ ^& H, Hset j (j + 1)
; t5 r& K' }; u; K) x, I7 u4 Z]
/ b$ H' i; N& z% X; m) G' z4 Y3 ?set note (note *(exp (- (1 / k)))/ k)
" z0 ^. n, O9 m9 uset credibility-list (replace-item i credibility-list note)
$ J, m- r, E& D& u( Jset i (i + 1)
- ?! p& }) U( G$ a; O]# \* z$ B6 X- C) H6 g/ N0 V
end& c( X; c  T0 ]1 k. H0 @

$ ^, ]6 U6 Q* L6 i% S9 t' t* wto update-global-reputation-list' [. Z: [* D" _4 ^+ C
let j 01 t, D2 ^$ y3 Q9 F. R* \4 F2 I
while[j < people]+ c+ f  Z' |4 x, j0 I9 R0 [( Q4 g% N1 l
[! T# u* p" |- `( i: p+ r. o
let new 0) b( R3 P$ ?; ]
;;
暂存新的一个全局声誉' d. f5 D: ~9 k" @+ W
let i 0& N: F& H4 O' \5 O+ d1 o3 Z
let sum-money 0
7 P. y. ~( n: j; olet credibility-money 0
$ j2 ]9 S- Q7 c+ n( Zwhile [i < people]: y1 P- U4 B7 h+ V$ Z5 O3 k
[. S( u' V; A0 q# z* r1 d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 D4 z! `7 P0 r, O  [; oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 T# @7 G: b6 V# y( l4 N' W4 [8 a
set i (i + 1)
: E& h% A( S2 L! h" h! K]! @; [) A/ P! w# g8 L5 [7 `% w+ p
let k 0$ q* r* h* s$ n* \  ?
let new1 0; E, X% ~6 f% Q" Q7 h6 D, `
while [k < people]
+ W( U9 Z' P4 N7 e[
- w" Q- T2 I& S$ T0 i. u% H( Aset 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)) B; ]$ E( f4 \4 Q$ Q
set k (k + 1)
2 O; d$ y/ k& g) h]7 P# \2 U, }8 z5 k( f+ p; b" J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 b  f! l4 b  a% _) A  e1 ?set global-reputation-list (replace-item j global-reputation-list new)& ?0 c% ]; H* Y/ L, ~: b
set j (j + 1)
  A, S! Y) B, c' G]) |# H+ x9 T+ s6 d  y9 x
end9 e  y+ y$ z$ i; l* ?6 ?

, A$ _9 R9 b. k' X/ ~+ D; ~, W9 Y. c% H) t7 F
8 F. i0 g% B# B, P# x( S. L
to get-color
8 m$ B* G7 T' A4 Y8 j4 J6 B3 Q, z' e! p( i9 n6 m# W
set color blue

; h5 ?) v# D. f: }end, q2 ~- x# P( `

6 n; n( g3 s; M0 o8 Hto poll-class# L  l  t" N( F
end
, L3 D& ?( v8 V4 `2 E0 F: |6 y5 u" \4 T. z
to setup-plot1
2 @8 [; O* X4 j4 g, y# ?" S7 y& _  a& X' z. a1 g8 J. [
set-current-plot "Trends-of-Local-reputation"
- p/ O5 b$ ~. S3 K1 k; d, s% @

0 }6 A8 t+ E% F7 L  T  Y# Z/ ~9 aset-plot-x-range 0 xmax
7 j7 E/ v$ [8 x) w
* I& y" C4 v. \/ s
set-plot-y-range 0.0 ymax
. V# U& x7 l! k
end) E  O6 ?4 ~5 {2 Y
) ^& E) I* `& i' `
to setup-plot2
( v+ B2 d7 d; D0 D; O, v) M3 J
' N7 {1 [7 f2 P7 m3 a0 g1 b. Fset-current-plot "Trends-of-global-reputation"
$ ~3 B  [9 _9 G, n! ?
* f' x+ S8 s4 g8 N
set-plot-x-range 0 xmax
+ ?4 N; G: }2 i3 l

; }$ d+ n8 q+ `0 Uset-plot-y-range 0.0 ymax

! ]+ {. M# Z; V# q% Vend
& ~2 p' k3 }+ V# x  x+ N; M; z) i- Q2 T
to setup-plot3
7 Q7 g. c8 ]. ~. l( f$ c# I5 B8 H% Q
set-current-plot "Trends-of-credibility"

. L$ l4 b, N9 i0 x  F
$ \" n2 }7 G9 @" }7 T% K1 O5 {set-plot-x-range 0 xmax

  q% m" `+ L0 X8 G  V! T
# j, A7 r. ?9 ~( o/ _set-plot-y-range 0.0 ymax

- p5 G7 R: Y4 d0 wend9 p+ [* R8 [7 {5 i, B7 G2 h7 D
  }3 G/ G$ c. {
to do-plots: T% |3 u. K3 z' ?+ }
set-current-plot "Trends-of-Local-reputation"
" v% U9 P0 Z" q+ O: dset-current-plot-pen "Honest service"4 ?2 b4 \, w) ^$ U* _
end
) y: V5 x5 n% m, I* G  Y, t) Y* q, U/ K  }$ F# [9 [
[ 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.! l# I0 C8 Y6 ?. N+ i  a
3 f/ z6 k) s: {3 E3 y; R! f
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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