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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:
) {& f* m8 O5 k/ }( @. Pto do-business , K. `' Y. _9 _% e
rt random 360- n  c9 C$ _7 @
fd 1
2 x! z8 c$ w  z ifelse(other turtles-here != nobody)[
! q; N4 S% {- h8 Q   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.
% u6 T! S% t; j5 d4 ?0 M$ f8 i/ q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, G" T' x2 I' U9 L, s" B$ k  Z: ]5 N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  e% q! E3 [* v+ E# ?   set [trade-record-one-len] of self length [trade-record-one] of self
( I- y8 W4 r4 J' g$ T5 X! X- A# f   set trade-record-current( list (timer) (random money-upper-limit))
, P  L3 U! M/ K) h4 Q, ^5 J5 `% d2 _: `2 f5 e6 N* u$ M
问题的提示如下:
( a( Z' W# g7 _& V3 m; Q0 f2 }, U5 P9 `
error while turtle 50 running OF in procedure DO-BUSINESS
; x/ x7 q+ c5 `  V  called by procedure GO2 I4 t5 l# M: u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" ^2 p" n) a: b; S8 y7 y
(halted running of go)! x( d( W5 O0 h3 T( s# n1 o7 e
3 }! z; L* d! J- G/ `
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~~! w& M' K1 V% P* q
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
& V( F& R& [3 V1 n7 ~( i3 \. z. Lglobals[
) k7 z& E  c; [9 Q" O! r4 Jxmax, \4 o& w5 O' i9 F6 @) r+ w% t
ymax
8 \! ^( d3 L. J2 nglobal-reputation-list
% J: [! F% ]2 g- y+ J
$ J# i, b8 S5 h: {% f;;
每一个turtle的全局声誉都存在此LIST. b6 ?* |) l1 c9 }* J0 t0 v; a
credibility-list
4 x5 A( ~) e" I, [;;
每一个turtle的评价可信度& i% U) b0 P9 s6 R" m; ]+ L" X( G. @
honest-service
  B: A# M1 q/ e% t) S6 Z% hunhonest-service# d* m- b5 V! F3 D
oscillation5 n1 m4 ]  W' V$ n
rand-dynamic
% c9 z" D: {! X' ~; F- G]
3 h7 C% i, @- \2 t, ]# C, k" S, d- P- h  Y/ a* E- H0 K
turtles-own[. B" S7 E& a2 s
trade-record-all
  r2 I; ?$ l6 g, _  N& r, y, S;;a list of lists,
trade-record-one组成
0 l8 }7 m1 |% r6 B5 A1 ttrade-record-one" G# N1 P5 |/ M6 ?8 V: s9 r- x, O
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& q* s, r  K. U$ P' P
: ~- d( R2 l' e8 @9 Y8 X;;[
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]]
/ J, y* n0 R5 r. e( `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]
: E. c. W* @4 D; a5 |3 W' G5 wcredibility-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
7 f4 S* q$ o+ ~$ r4 b. Nneighbor-total. D, C- Y1 Q2 u3 w; Q* K# Z
;;
记录该turtle的邻居节点的数目
. w! K( |9 i& Z0 N8 E8 B, ptrade-time# g$ m! x9 h9 L1 U$ Q( a
;;
当前发生交易的turtle的交易时间7 s+ V- U% }; Q# N" ~, v
appraise-give* m2 h+ s; h1 K: K& H
;;
当前发生交易时给出的评价& B( u" M' y+ j" z" X( M, _
appraise-receive
1 G# {9 S1 D. R% T- B;;
当前发生交易时收到的评价- _. ~7 h, D, Z& m5 O4 K2 O- W
appraise-time' S% i9 ?( G/ Z, j) a' I
;;
当前发生交易时的评价时间3 b. ~3 J0 f5 A% M. `% K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 t4 v' m2 X7 ~: Y9 s
trade-times-total. z5 o, B6 F% t
;;
与当前turtle的交易总次数$ r! n3 t3 P! N
trade-money-total
6 H8 M9 U9 U  B# Q;;
与当前turtle的交易总金额
1 f+ Z( s0 t: r% P) @* J4 \6 S; D5 {local-reputation  y  W& v; ~  w( g% E" @
global-reputation
& x/ c1 S2 W) \6 Icredibility' ^; e: \. R8 V" r
;;
评价可信度,每次交易后都需要更新/ x( c- [% n2 f7 o% ~2 ]( W
credibility-all/ {5 H2 l+ @% R  n
;;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 }" n6 T* C8 s. `8 Z
  ^, p; d2 k' A0 M  u9 p0 w1 t
;;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
- L9 @8 B9 `6 W) }) icredibility-one
& o6 l0 t* Q* [: R% a- N;;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
6 a' N8 i8 Y# U1 ^9 P' Cglobal-proportion
6 H; p; \9 J4 _customer; E- @& |6 c' U4 V5 m8 d# Q, b! z
customer-no# A* H: y4 a4 y: ]
trust-ok
6 {# P! i+ }  g6 ttrade-record-one-len;;trade-record-one的长度/ q' c; \. W0 b+ H  D
]$ b( w4 D! \7 j2 n" ^
' w- k8 X4 J, C1 D0 M7 Y
;;setup procedure
, D" z. M& E: d: Z
' z& p$ l# [# Z5 H2 Z4 f- Nto setup
7 O+ s1 N" a( w' h8 i. F
& H! O2 S* z/ V3 n% Nca
: G$ f- T3 g3 I
0 w9 G& Y( i. q/ y
initialize-settings

: u9 [5 Y6 O& e" N4 K2 }+ X# O7 b4 v5 H
crt people [setup-turtles]
! \" U+ z: B  v$ J3 Q" \, H, ]
+ y- z0 I6 ^! _2 k
reset-timer
# S: ]  ^& u0 q# I! w
, u3 V+ @& T8 B/ x1 o
poll-class
4 x3 u1 J5 u9 H) e

: M; e4 k, e! V: K- nsetup-plots
! l% A* H) w4 O* ^# C
: u7 r! @% a) J' _$ {% Q5 i
do-plots
4 ]  [+ A( R1 V+ i& [% @* ]
end
9 H) j$ U: \. ^
) C" T4 s6 u3 Cto initialize-settings
% i- _. w- Y  n$ h% f
9 X1 d0 @3 g) G: A/ S* }6 Yset global-reputation-list []

* E' [$ {" Y- _! `  n/ P# _
* C& n) V2 N: Q# ]# j) B' k. nset credibility-list n-values people [0.5]

0 \8 F7 c0 K' }$ w3 X0 a+ Y7 k$ M6 P
set honest-service 0

) g# P$ {: E3 |/ O: b# I& J/ s3 V' c
set unhonest-service 0
, ]) Q; U; r$ z5 X4 {. N0 z
7 N* S  X- P* @' u1 T- d( v
set oscillation 0

$ N# g+ ~7 F6 u0 c
( L9 Y; R/ ~4 e% h8 g4 Lset rand-dynamic 0

# z8 u8 x! b0 D9 w! X+ M' hend
  Z- G9 x) ?9 p, h2 @7 f# e  v9 S0 K! ^( C2 C# Y
to setup-turtles
) N# Z: F3 V- u; [: c! Tset shape "person"
1 ^- X* W5 f- P7 e7 fsetxy random-xcor random-ycor9 b7 N8 x) R" w# i8 y, @* V9 R" c
set trade-record-one []
7 f& O) Z+ l  O% G, \. Z: l

' s& n3 B+ z  `% a$ @0 ^set trade-record-all n-values people [(list (? + 1) 0 0)]
! ?- A7 B( q4 Y

# t# ~: a/ ]+ `9 `$ W( \0 X: qset trade-record-current []3 r- `: g6 `; T2 S8 A6 N
set credibility-receive []. _6 T' t' f( f/ N! o* m/ P9 p) x8 c
set local-reputation 0.5
. Z: M- ~8 Z) o4 H& mset neighbor-total 0
1 b# }. V5 t# u" i$ e( oset trade-times-total 0$ L9 Y+ R1 D/ i; W7 F# s
set trade-money-total 0( e; C/ ?( s! ^$ F+ y+ c* e$ H
set customer nobody
; y0 l/ B2 `  N  C( v  M- \set credibility-all n-values people [creat-credibility]
" ^4 R% a, D$ c* \: Qset credibility n-values people [-1]
( v2 P! \. ]+ G7 b5 F3 ~get-color) u1 |  E$ u$ z* q
' K5 q" k$ O1 B2 m
end4 w& n, K$ o. O# B6 P& z

9 g5 |7 x2 u( v7 o. ]to-report creat-credibility8 ^; V1 G/ _, v+ S
report n-values people [0.5]8 o' J! K4 i* z# {
end
6 \& O) f& M/ O, G7 m( A& Q6 Q5 H9 Y! `' T0 u) L
to setup-plots
- _! o8 S5 g- @" a% j, U
# t& r8 y& W# [" v2 jset xmax 30

  @5 }1 w8 U" R( M
; n( F! i- [) Eset ymax 1.0

+ w* b' n4 ~- j& D: M& q
  {) V) I0 w/ d0 q  {: wclear-all-plots
" M# [; `# e& s; s$ p
5 O7 O; Q) D5 r" C7 D
setup-plot1
  R7 q# G. n8 _& u4 |& ~

2 J; ^4 o! z! m+ P- G  S- \2 Dsetup-plot2

+ ~! ^5 @* m! {) T$ i. H( o" E. s: b) `7 d
setup-plot3
) B7 p5 d6 U  F0 j
end, c- d* O/ y: V$ A- L$ Q

1 d7 r/ N8 _9 {+ S) z;;run time procedures4 u* k9 s/ C4 J1 p

  ]6 J0 c. G, |to go
4 ~- l$ G5 {6 e+ ~- L: N. T6 K# f0 _
ask turtles [do-business]
/ d& O9 m; K% P; H. X
end( Y' K: D/ R$ y
- w4 w: _: e7 _! q9 f
to do-business - ?' V! F9 {) }9 {( ~5 S

1 \. g0 J8 p$ i" J7 W  I4 g3 ^5 X% }2 [9 i, z9 u  ]
rt random 360

1 Y% ]& {  C1 t) E9 y4 |4 C$ Z9 d, `
fd 1
: H7 g# W% L. n% ?7 z
3 f& L6 \( f- s4 H. c- K4 n
ifelse(other turtles-here != nobody)[

, p$ m) s; C& t2 w2 |; C1 z- X0 S/ T% `6 s
set customer one-of other turtles-here

( b/ P2 Z0 N. u. A
9 g* R  F; L/ X" C7 H. {;; set [customer] of customer myself

4 n; I! ]: U* ]. D# {% o" i
' }2 c9 T4 `* o2 s2 Y0 k9 Q" Jset [trade-record-one] of self item (([who] of customer) - 1)
8 L! @% l( ?: C1 V# r) _[trade-record-all]of self
3 f$ {: b7 z' @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ n$ E( {  l+ R

, y' ^/ F( m7 @1 C# F; n) g4 vset [trade-record-one] of customer item (([who] of self) - 1). I2 }: X0 t  \+ h/ e# {
[trade-record-all]of customer

/ W% J( [' }& I. `6 v$ w' F. X* V9 N4 F9 ^/ ^" G
set [trade-record-one-len] of self length [trade-record-one] of self

4 T, f4 T1 l2 I$ E/ v% v- ~& U. Z6 G( ~- D! ?  H9 i. g
set trade-record-current( list (timer) (random money-upper-limit))

8 Y- i$ R7 |: Z. Z9 b# g/ h8 c5 @# N# k' B+ z# U
ask self [do-trust]1 U$ F, i1 o0 h9 B: e
;;
先求ij的信任度: r; d5 j; l2 D& o* e* H/ M3 x9 F

3 k8 t  P1 G: R, [if ([trust-ok] of self)/ }& u* D, S$ e- p9 D4 Q0 ~
;;
根据ij的信任度来决定是否与j进行交易[2 N, n; `$ i/ B; x0 X" _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* D. _# ?) x# Y; C$ ]7 _! s5 G6 H+ \# J: M: t7 X
[
" m; r6 C; m4 q, D
( j+ a) R9 }0 O. b
do-trade

/ r- }4 p3 [/ K' h* p3 H% H& y- o) i
' G1 \# C1 y" y$ Y0 Aupdate-credibility-ijl

. M2 x& G8 E8 j3 `4 v% ]6 P
2 _) n3 j) Y8 e/ G6 a* }- c" Uupdate-credibility-list
, n+ p; ]: P, A7 j* J
0 X5 P4 \: u; C6 t! j& l
1 S' L5 U+ t2 m$ ~" Y- y0 q
update-global-reputation-list

- w% t7 a" X/ m! d# {8 w! h
& P: h0 d8 d8 J1 wpoll-class
* b1 J7 @& Q' a6 N! U& u

- W# Q# q( `% W# i8 s! t! Q7 L% xget-color

  E! |( Y  z7 q( @6 r3 B$ N  G5 Q
# R/ n# L& U+ t3 ]  ^8 L]]1 T8 T9 m$ _# @8 ^) z! v( O
+ Z0 I. W1 n( v: |( g
;;
如果所得的信任度满足条件,则进行交易
3 M1 P5 c0 y( J. e2 O4 a
! L+ {" P6 P& k' R- n$ E[
* [. S. K& w8 T; W* v$ h
( d0 X. c0 ^- f6 k
rt random 360

8 T% Q4 _+ t, t7 U5 l4 x
) ^5 N* x, ?& S& x6 ~3 qfd 1

3 X  o- h) Z8 d% W* P1 k, E
; t7 t! M7 m' T& R% d3 M5 A8 M]

, ]# j5 w. i4 O, G' V% ]. Q5 C+ ]/ ~( d* ]
end

, o( v" s" q! o2 z" J6 m) L
7 _- {3 ~8 ]0 {) }to do-trust , v/ M- E6 P/ x
set trust-ok False  y( m' C9 x# s' b( d& T8 ]

. w9 o5 f3 j, e  c+ Q7 r% S4 X
, X7 e: Y: w$ L/ N! z4 D, D4 q
let max-trade-times 0- D; u6 i7 y; m% K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! _" \3 c( [7 U8 N  Olet max-trade-money 0( ?0 m3 x5 j3 T" y9 s# Z! e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( ?* u& G. T, k/ H( A2 m. nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& n. k5 C* p8 I( D7 @
) \8 ]6 E2 Z" i' H4 B
, e6 P& A+ A$ F; \% g
get-global-proportion
& a. F5 I9 y9 o$ }) d% Flet trust-value
/ ^+ D5 h/ Z" Y9 t- U- e* e9 mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( y3 O7 l9 P1 w' h
if(trust-value > trade-trust-value)
. y  i+ ~& ^9 F' y7 i[set trust-ok true]
2 }1 I- H* v- `' e0 x" mend( F3 Y) O  S( ~8 @9 p- b
& n+ {" a; `  ]" \# B7 ?4 M
to get-global-proportion# J5 A0 Z( V  }7 H& L  b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% ^5 X, A; e) c; M' h' F[set global-proportion 0]6 [" S- t+ P+ R2 c5 K7 ]6 e9 d
[let i 0
& z! z8 g, D8 g! l9 d% x3 {let sum-money 0
) P8 K. X6 \: |4 s5 ~5 }( z/ {while[ i < people]
* E+ v2 o1 J- E- Z  K, ][
0 k: E& @5 s( y! Wif( length (item i
) n! \  V" T2 S' _& i! X[trade-record-all] of customer) > 3 )
1 f2 j9 U. Z0 V' u# \3 @/ R6 F
[
5 ]9 B* J* ?7 Q9 e8 a7 |set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( Q3 l) J" u" o7 d' g/ \]
! n5 L* o" R! T9 ^! s]& X' y3 \# m3 o; z7 ?" M
let j 0
2 B( \9 L# D3 D+ W9 @$ o! M+ I) olet note 0; z* ?/ n7 i8 `# f
while[ j < people]
" c6 O6 o9 Q8 [. G0 l8 `0 K5 [[
! ~& V$ ?; t: Mif( length (item i
6 v) I; i. d3 r$ K) l  ?8 `8 R[trade-record-all] of customer) > 3 )

: W9 u' a. r# ?[
: [7 A) x/ M! A# a! W7 s, r- hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& ^- q" Y. G+ L) w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& f1 ?  b4 \2 Q) q! F/ n' e$ i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 n4 ~7 h$ b! `5 @: Z
]
* v# _) r0 k1 _]1 \- u) B3 v" {- T. J; _, O- l2 n7 e
set global-proportion note3 h8 _  E" Y6 N  f! c( j
]7 c+ X$ F+ ]  H) |2 V
end
( j3 X9 {( l1 I7 T& o& y$ Y1 E. n& ~4 H& J: k0 s& N
to do-trade
1 ^  L- Z3 P* J! [;;
这个过程实际上是给双方作出评价的过程
. ?7 X7 K& T* k1 i6 Y8 Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- ~* O! D! B4 P9 ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# r( {. G% ]" a- c' \. P+ [set trade-record-current lput(timer) trade-record-current
4 q4 v" I0 K4 t4 R% L/ Y' S8 u% ?;;
评价时间
9 R3 V) W( \8 sask myself [
" _5 z( s0 r2 l+ Mupdate-local-reputation
0 G# {# Y: A6 Bset trade-record-current lput([local-reputation] of myself) trade-record-current& P% d$ O/ j. Y# A( ~9 K1 f
]
. V+ w5 T3 {9 cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ D/ O, H- W2 M1 N( }! p, L
;;
将此次交易的记录加入到trade-record-one
, a+ O2 m4 m" jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& D0 r  ]! B# D2 b5 i8 f8 J- @) ulet note (item 2 trade-record-current )
1 F4 ?  B) x4 Bset trade-record-current
  i7 C& `8 M, N& u4 g' D. d# z(replace-item 2 trade-record-current (item 3 trade-record-current))
0 o, N+ |: g" h% {' z
set trade-record-current+ \: t0 J* o% M. G& r
(replace-item 3 trade-record-current note)
$ }; G- z3 e8 q4 H0 {' g
! o, X+ B! U# Y4 ]  U* F

1 K/ {0 N. W5 r. ?  ^- rask customer [
1 X; v" F4 S2 X( Y0 ~0 l" \update-local-reputation
1 X) [: _, K2 mset trade-record-current
2 R: b6 D/ J6 j- W. c9 \+ n+ X2 j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 @8 b5 \: V: p/ v' v( x
]
7 o6 W( k& E" K- z2 x! ?+ P  F' b( L+ R7 K9 q' n$ ^
! V7 ]' b/ ?, ]0 f. G
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 b! @3 n* _9 _. R
7 n  L5 Z, g( ]6 T( K# G8 h# d- }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. V4 L& [+ i8 ~;;
将此次交易的记录加入到customertrade-record-all
4 [0 ^9 d4 ~7 ^$ M" u: g& Qend3 f% X- K( T1 i6 J8 E
% T3 z& N) S; K
to update-local-reputation
, M  k% s- r# Jset [trade-record-one-len] of myself length [trade-record-one] of myself
1 N4 p' V- i7 v1 j: |' }) f& N0 A! m) ~, p0 h" p& s, E
3 f2 d' I4 _' B5 U: ^0 K2 ~6 _4 u$ C
;;if [trade-record-one-len] of myself > 3

* @# G' P" u" D% r: r, a& Aupdate-neighbor-total- U- J" d+ s: f; |) W% t/ d
;;
更新邻居节点的数目,在此进行+ U7 i/ b8 A- z, P4 ]6 \7 \0 I
let i 3
' Y0 H+ m1 Y7 A% `) P9 xlet sum-time 0' L5 D3 H; W9 c5 Z
while[i < [trade-record-one-len] of myself]& J$ |! o  ?0 h+ t: z
[
+ B5 ?' J2 G- X% g1 m* S9 s) W, K: vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 t9 y; s7 V7 R8 [& Aset i; [- N- C/ q& y' g
( i + 1)

; n% h; v+ U- M+ U: H* m8 r) i]6 g/ O7 L% E  r+ ^/ d
let j 3
, U- T3 n: q& E2 ?let sum-money 0
" d4 A; U$ z+ c! r% ?1 kwhile[j < [trade-record-one-len] of myself]
! d6 i- G5 \' p6 i1 A5 ~4 F# v[
4 \; j/ t: b7 y: A, r9 t" a. D( aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. W/ t4 R& V+ V# u7 |' j( bset j7 X5 J0 D6 ^, N, Z2 A0 G$ e
( j + 1)

9 T$ N+ g7 |* |0 p8 G0 T: I]
" }1 @6 g. R0 F! H# ~; tlet k 3
. w. ?7 P# O9 f, olet power 03 r5 ], I' h7 f  u; V9 o2 j$ w' n
let local 0% n6 q% {! T# f6 |  F: z
while [k <[trade-record-one-len] of myself]6 b3 A: O; `% c, H9 {( x
[
6 ]! |# l9 X8 @- _. _0 Mset 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)
8 b+ G$ t- u# y# v. G9 Iset k (k + 1)
0 ~9 z3 w6 M) {, b" H9 f/ J]# }2 e! _; }$ ]+ N4 `3 o0 n
set [local-reputation] of myself (local)$ t0 N8 ~; k2 X/ N9 B) h& j3 X
end* K4 ]* C* `; a  D' C' i  E+ p+ ^
" q* P# t) e# n
to update-neighbor-total
! S2 _; ]* d5 @3 Q" {# Z* V+ F/ Z/ R# k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 u1 F* Z, \! p. J, Q! d  x
1 E1 m' a! j9 ]9 \6 I) m, P0 V
& k, c- M  B- o1 p) x* H2 t
end
# n9 D4 S8 L3 Y' ?/ X$ S0 P% B/ j  _: |2 }# m
to update-credibility-ijl ; D( ]- n7 U% s6 i/ r; t' y8 I

! o4 x% {% w4 |* M- S6 o4 |;;
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。# S& ^' B# C' z- o- N/ g+ `9 D3 d
let l 0! l( W  B% |/ [
while[ l < people ]
( @% T% n3 c# [" ?3 F7 s( x;;
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
6 I4 X* d' s/ P: k& H[  c" g4 Z( \' t0 [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ U( z! R/ s# q, x$ mif (trade-record-one-j-l-len > 3)
! ?8 E$ U: p, ^3 |% R0 j: g[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 K) }; ]& P# l+ L( p+ ^  B
let i 3( Y/ {0 ^1 k* |* j3 n
let sum-time 0
% z0 E7 ~' |- _while[i < trade-record-one-len]
: k- P- D. l/ `# E[! C  {- s' g) Y) F& @! ?1 _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- |0 l3 F" @" }9 h+ s; c/ Y+ O$ G2 \8 wset i$ o/ J( J2 `  Q+ a' U' u
( i + 1)
# U( @$ U% }* ~5 D+ D5 A" i7 U
]
) z, q5 z6 d6 nlet credibility-i-j-l 0
/ u8 G6 {. l' _3 Y0 W;;i
评价(jjl的评价)/ B! Q2 b! \0 V% R: R# j
let j 3
" Z( N8 S. X  t' X8 mlet k 4
0 k# W- v- a7 R5 [while[j < trade-record-one-len]: d3 ~2 e4 ?7 `0 F7 m
[0 b( L) N6 Z0 U' ~
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
& X! y0 \) l5 Hset 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)
: i" X. s' @$ Eset j8 B  K8 [: d4 F( I& j2 g
( j + 1)

* Y! c# m- j9 B' \( W]: B0 d' c* o9 a' W
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
1 ]: R  h7 F2 q) I! C& Z' r& s
' ~  [( R* Q- r- \. P( [

6 W: z0 t8 G1 c  m' `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 G  W8 b/ V6 h8 i4 C;;
及时更新il的评价质量的评价
& D2 }" M4 t# {; @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& I- {% |/ p2 Fset l (l + 1)5 B" R# G$ |$ n
]+ ~( Y) A8 @: O0 X! Q0 U# l3 Q- c
end: v" D! y6 z1 f  S# b

. c0 S7 J& D9 h& L# j. r% [: Lto update-credibility-list
! U/ T- n/ X! v% `' Olet i 0
( `/ i- D' J) Z# vwhile[i < people]
; V8 g; s* y. v6 _+ {# D1 w8 h[# j1 e. i$ G( e: N( m* z- a2 }
let j 0
9 t$ R* R$ D2 i* `let note 0$ ~& e+ K% L0 W/ o5 d. j" f
let k 0
3 R: D' E( e6 k# W( |;;
计作出过评价的邻居节点的数目
, i- z; y- h8 t) ]' T0 pwhile[j < people]
/ r" W$ p7 I+ V* M[! @  a, }/ B0 y: ?- V
if (item j( [credibility] of turtle (i + 1)) != -1)0 i& n) s4 C' u( l) t( s
;;
判断是否给本turtle的评价质量做出过评价的节点$ \- N: S% d( ?# _! d
[set note (note + item j ([credibility]of turtle (i + 1))), t% R5 R/ y, G" n$ E% D1 t
;;*(exp (-(people - 2)))/(people - 2))]
. ~$ U1 W9 @& q# n0 ]7 b
set k (k + 1)
2 F# L  E( c. `- M; b$ A) m], j  P9 r* ]$ s& E/ b
set j (j + 1)
8 A+ A; B/ Q. S' P" c' s0 d& J]
$ [# C4 k: s4 X5 G' [0 [set note (note *(exp (- (1 / k)))/ k)% k$ S( b; `& A9 V
set credibility-list (replace-item i credibility-list note): \4 a4 Z  R# F  G! g% }
set i (i + 1)
( C# V2 m$ [2 }1 p1 Z. S. _]8 z/ H2 C! a: T4 i- ?2 t
end
* X* k' G: t' T  E6 k# m0 g* L7 `& _0 n% i- K8 g* O- u
to update-global-reputation-list! X2 t6 Q6 J7 i5 |0 ?
let j 0
- L7 `" k5 R) iwhile[j < people]3 j- T) _( O+ k/ Z) C
[
* ?$ Y: U" l6 U& plet new 0
1 ], }. o, Z" V+ v0 {4 W;;
暂存新的一个全局声誉/ ]: b' z  a( ~
let i 02 j. @2 l; k9 k0 I4 a4 a
let sum-money 0! z1 o: H4 }: z
let credibility-money 0
1 X/ H1 S6 R- E8 w/ @# Wwhile [i < people]5 V7 U0 O% A$ p2 g1 H+ o
[
5 W  u. @# W8 ?% G. J3 Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, ]% L+ p1 c# E1 d4 \/ wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 y  z, S( L; m: J( Z, Y) {
set i (i + 1)& I# `! d" a) c- Z8 t& O$ a# U0 |
]
1 ?; C* r. _8 ^let k 0
/ d; v( f  N; w( Elet new1 03 G4 ?* X/ z0 X8 C
while [k < people]
1 J2 a3 I+ @, J4 k2 W- X[
: F9 c! d8 K9 ]1 ~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)
0 ?; U4 H3 o% p6 ^0 u' [- dset k (k + 1)$ w2 A7 V, v+ |) O
]: j( H- N7 N! {, W8 y7 N% ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' T7 I$ `4 U. k9 v' t
set global-reputation-list (replace-item j global-reputation-list new). q2 K5 i0 _! e6 z+ b: L  `
set j (j + 1)
' d- P- S# M! S$ Y% F9 E1 \% V], G/ |# e  }& x# B% D
end
7 b" s1 ^) o) }
! g# E8 ?, M+ O3 h# @" N- y' Z* A/ i$ l) d5 z
7 f4 ?2 w8 e9 O. i' r2 Y! h
to get-color
1 O9 C* j2 P1 W3 _/ ~$ w& ^
/ v4 _0 z& U0 g2 `7 bset color blue

6 @( x: X0 o! k4 @, [0 F: Xend, g/ `+ M1 I0 c+ p4 j

4 _2 e) k! J5 P+ u8 Yto poll-class2 p; k) r, q: W# H& p. o% j2 y
end
% a; A% A9 _+ f, b* j7 A5 L
. l' M  v& W8 Z8 J( U+ s$ u' x! kto setup-plot1  r+ T2 v5 o# w4 ~+ x0 d0 B

% s, M1 b' ]% a' N; vset-current-plot "Trends-of-Local-reputation"

# v1 f- u( x; K0 M  p4 _: }$ A' d. N1 _% ^3 v$ G% k3 `5 U$ \! t
set-plot-x-range 0 xmax

7 L  w& ~" ?$ b, N$ M1 i) G; D8 u! x! n# F
set-plot-y-range 0.0 ymax
: C  W: N& l. Q& w
end$ j% B  j) z, m; i% u

3 r* H7 f8 a6 s1 wto setup-plot2/ ]* W# B3 Z; E, z" i* u: k( F

( P- r7 A! M* Z. kset-current-plot "Trends-of-global-reputation"

- u1 R5 I; J' z8 c6 }0 U/ k- w( u8 x; o) w! R/ p
set-plot-x-range 0 xmax
. Z$ Q. @1 j" z1 p
1 d$ ^- s$ r+ R2 f3 O
set-plot-y-range 0.0 ymax

0 c  ?3 H0 {, {5 D0 }$ l# q. R7 Nend
5 U4 Y2 [1 c" [4 N4 M4 ~6 \2 T% b: H; `# V* s: |
to setup-plot3  N# e4 W9 l2 j. U2 r
# M7 P* _( O. I3 D+ s# K
set-current-plot "Trends-of-credibility"
+ C" M: [" p2 p3 T. O# |

) W5 R# N+ ]% A: hset-plot-x-range 0 xmax

% l& S4 E9 `, c) ^3 R* D% r6 J3 k: \- K9 G4 r" N) o0 y0 y
set-plot-y-range 0.0 ymax
# k. Y  b, T4 {
end, H% r6 o( U# n

' o. t  w4 X3 O! Y- t' g$ [# gto do-plots
: _! f6 l/ m& u1 S: Jset-current-plot "Trends-of-Local-reputation"
# `+ N/ y) i) k4 tset-current-plot-pen "Honest service": d3 w4 b! m  l& f8 m5 Y/ a
end, n; [2 @  M2 c5 v3 S% h

* [1 j4 o$ ~9 m6 X; g1 h# f0 w[ 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.; v) ]! Q  t" U. g& C

5 c6 ]  }( ?1 J3 M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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