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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:; b$ o, Z# r& A' ~) p; a/ ?
to do-business * }7 f, x9 K+ U# D" d
rt random 3600 x$ c4 \4 a2 L1 s" A4 G9 L
fd 1
  w7 {" E9 `. }7 r. T2 c ifelse(other turtles-here != nobody)[$ l) y' e+ A$ J6 |( Y7 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.6 m" q) n9 O) A! \9 H8 N2 Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 }2 p! q  B, L  U1 H$ o7 U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 o, `" |- ^8 p/ ^1 w& _9 J; ?# y
   set [trade-record-one-len] of self length [trade-record-one] of self( S3 I6 x2 v5 t; ]
   set trade-record-current( list (timer) (random money-upper-limit))
- @( X( a5 o, k/ G
& L0 ]# B7 I. u( y, G' X问题的提示如下:
$ D1 B) g2 u- a: ~- }; D4 j0 R/ \8 t( ^- C2 \# h# R/ |
error while turtle 50 running OF in procedure DO-BUSINESS) A4 h3 A$ W  x# c$ N! x+ ?
  called by procedure GO
) C2 N6 f/ [( S2 y6 [- Q$ H# bOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 J  U7 X, @5 P  ?1 ]" Z6 k/ t
(halted running of go)0 t% u1 S( N* ~) M7 L0 l

2 S* I8 z7 X8 Z/ k! s$ [这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
! {% S5 S  e' O; C( W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
1 Q% U) e3 e; ~& R: dglobals[
, x% ^. l- y0 g8 qxmax! ]4 Y) l# I6 Q, d
ymax
! ]: T6 {6 S9 t, n: p2 bglobal-reputation-list
+ [  g$ `# Y- ?8 g" m4 K5 ?
" u- @( L8 `% Z+ k3 n;;
每一个turtle的全局声誉都存在此LIST
2 l8 |0 D+ p6 H' f% e: jcredibility-list* s( l! _2 J: v3 O% r
;;
每一个turtle的评价可信度
4 g: z4 K8 H$ khonest-service
0 l# x* q- U! p1 Z' X: ]* w. @unhonest-service9 a5 X  c* H0 O, q$ a6 E  W
oscillation
! c, M' u  ^7 u+ K/ e1 Krand-dynamic
* f$ Q) d0 u6 z& K: r& q' J]
' M# F2 Y# B+ o7 @: `5 F1 R3 z
: G* I+ {3 |1 {* _turtles-own[- K+ p4 F8 t5 I) n
trade-record-all
. T$ F% e% z  P8 _* X4 _0 T;;a list of lists,
trade-record-one组成
7 h$ n: a/ o! htrade-record-one2 X4 ^' }7 S0 }% B8 ^5 }0 Y! h' 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
8 S0 D; E+ h) S, \1 f
7 v5 w! v0 B' F" z- G( s5 q; t;;[
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]]
2 g; W8 ^- R8 gtrade-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]0 j2 v6 Y! p# u
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' l4 q6 l# z7 E8 R* F, y# z( q$ w
neighbor-total9 X2 ^' C4 z9 [  h! X. V; B
;;
记录该turtle的邻居节点的数目3 w! F5 F5 D  t6 Y
trade-time
% G3 v5 [) G8 z;;
当前发生交易的turtle的交易时间
7 m' i* }' N+ u3 l+ ]/ Pappraise-give
1 y/ h; H4 F4 q1 \;;
当前发生交易时给出的评价
  l8 k- Z2 Q3 ~) dappraise-receive! ]$ f- I( W( }5 C' A
;;
当前发生交易时收到的评价
' F) h! t8 |7 d8 J7 s! k+ x; {0 q: Vappraise-time
/ e& L) N% [  z;;
当前发生交易时的评价时间
7 m! g. ?$ ?0 u- C- s$ \) Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" l/ v/ ~- `+ L2 {" L! A
trade-times-total3 v' N& S1 J7 ]8 _! I( s( }
;;
与当前turtle的交易总次数
; M( P2 s5 h* J8 j% G3 J% ~trade-money-total) j# l0 b  V7 ^+ R
;;
与当前turtle的交易总金额; ^. m6 u! K# ?! T
local-reputation- d2 o( H' N5 u' \. v) x
global-reputation
6 h6 a7 k% h9 k% X+ Y$ H: pcredibility5 y( @* U9 ?8 w. h
;;
评价可信度,每次交易后都需要更新* q0 {0 P  b2 w" s
credibility-all. g! n0 E% X3 ~1 d" Z4 H! L8 o9 v
;;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6 Z. \* _) s! z6 r; |
, }6 S, T' n2 a6 S) d: Q4 |4 _( [) o
;;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
# g9 S# ^! E7 e: z* }credibility-one! t( n& x' K  G: n3 [
;;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
( {2 ]/ p6 }1 xglobal-proportion1 B) E( ~  X  H9 u2 v4 j* c+ A
customer
# @6 `8 m, I( S5 @( f' Ucustomer-no
8 W% @2 A3 Z8 j& V7 i8 H& t2 Strust-ok6 P$ W) C3 _/ b2 y; [2 x
trade-record-one-len;;trade-record-one的长度
: N: I2 q& a' V; a]
! L/ M: g4 X/ F" i0 y5 T& G
& G7 _/ S/ I; g2 Y) S/ n: ~;;setup procedure7 S8 y9 K' N4 f. J4 T  g: z
, @9 h, T! p4 i, Z
to setup7 R8 b- y0 v, v
) ]1 S8 U, A: |$ K2 t! j  ?
ca

8 i" Y4 `# r- o. ]- I- W1 s( {
' n4 e8 }4 u. }/ }+ M/ x3 g( tinitialize-settings

: s3 s3 i* j! B& ?2 x9 @8 ?6 D- N4 S" x! T# t, ^$ Q0 M
crt people [setup-turtles]

' l% B& A- {2 T, l! w- }; {+ Y; N" f6 {, a- @
reset-timer
2 I1 k3 n: e  b, U

" w: _. L5 K9 epoll-class

; |$ o8 M1 }* g0 A" E3 d" R) m
1 _" q0 d8 T/ ~; Usetup-plots

0 J' q1 l6 W' `7 ]; _+ k0 b
) k7 H$ q1 j% f% e, a7 S0 ^9 g2 t' wdo-plots

8 C- }1 b( L% m) \7 tend
5 {! k  X3 |2 y# i( I* n
: k3 @9 ?5 o8 V8 Y9 Hto initialize-settings
0 ~! M5 @4 U( v, Z& }* d2 q
5 |! {9 W( P! f2 s  v" t  V+ Wset global-reputation-list []
/ b  ]1 j9 U, q- K, u1 R3 K, f
6 R; [6 G# }' o" d
set credibility-list n-values people [0.5]
$ l+ \0 {  s2 `* n* m
& W6 U. R3 M6 A+ G3 \
set honest-service 0
- s' O6 c; I/ ]  x9 }* i
  }" m8 M" ]. A3 X) [; w
set unhonest-service 0

( W- j5 q: g2 x! e# i8 y5 ^
; W8 }8 A! u/ S4 A/ g5 D+ mset oscillation 0

* y+ a0 h' r& B: N0 s' A7 Z7 s: e! k: t0 m
set rand-dynamic 0
1 r: l; @2 W) F( H$ j
end
" j3 P+ Y; m9 c2 g. O% w- W; o5 u8 g7 [* j: P! x. W
to setup-turtles / T8 `) S* @0 n4 b+ m6 L" B
set shape "person"! K, G1 F7 n5 w  Z, n, P& u
setxy random-xcor random-ycor
! A- x6 q0 n7 P  jset trade-record-one []- M6 C6 o3 a3 t9 P
6 z* [% b! _- `+ e& Y0 \$ [# j2 @
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 o1 H& \2 u  [: c% b; d+ t
/ @2 Y3 D3 |  w( C6 F1 v  w( N
set trade-record-current []
. J6 ^' T+ z9 G% G6 R- n  q$ Oset credibility-receive []# ]$ P5 z8 e: G* c- A6 w4 t! }
set local-reputation 0.5" ?: {% v) s4 x$ p- r: g' U( _
set neighbor-total 0! d* r  I" v' h2 X
set trade-times-total 0
% c2 V( X- D. I9 O$ jset trade-money-total 08 O2 b/ a% V0 V# v( `
set customer nobody3 Z! \0 e6 M2 N4 W2 ~
set credibility-all n-values people [creat-credibility]$ ]) y9 M/ B; M  T
set credibility n-values people [-1]! u  l; h# v$ j. _
get-color
9 D: v. z, Y$ c" O4 b. O5 v

  O; g$ R& X2 F5 @end
+ |% i& \- s4 `0 t: u+ d
2 |, F1 r, C" D( Yto-report creat-credibility8 m' R& w$ q3 R, }
report n-values people [0.5]$ K* K3 p  }, K) t; B
end
* I' B- u/ J7 m" `! h! M% g2 z' J( l* }
to setup-plots
1 t- Z% Z+ j5 g& n
' z8 p6 J$ g  a1 u! U2 m/ eset xmax 30

9 I/ T: f; i: l1 S" ?! I. N3 V) R! m6 M. g9 l
set ymax 1.0
7 }5 f+ U9 y/ a+ ^

. x7 {% B5 P2 o, W0 F4 I- x. l# lclear-all-plots

9 I) n: v2 R2 q9 N3 r: j7 i8 g: e" ^5 F+ g$ X. ]2 f
setup-plot1
; U, S" U8 u0 V# [6 ~" n

2 y2 A/ M7 V+ _& ?8 l6 @" N" |setup-plot2
& ?" [% k. Q: D; l& u3 p# k

, C, ^. O! h. P/ ssetup-plot3
" q9 |4 _3 Q) A1 w. X/ K
end
  S6 p) K& L/ E' k' \* f
! Y: g, L( ~) z3 P;;run time procedures# ^7 l4 g; ^" p2 N( y
0 ^5 M- u7 h0 m4 d  o6 }9 m
to go
& N! W5 J, @4 _" G; |9 ?2 m7 `
: I0 Y$ L" j9 o! O) |' D8 Fask turtles [do-business]
0 \- U& P9 }, B8 Q1 v: V
end" J( ?) ?* b( S4 [; J0 P
( L7 {/ _9 n: \" ^5 h, i; r
to do-business 1 Z5 ^3 w/ M( ^5 y5 ?
2 S3 k& {% i) ]' [  i( `( @0 v
  f5 m- p, @3 m. r- C7 F
rt random 360

$ n- j) o/ A, N: ?' r
: M5 D/ y1 F( v* x- Rfd 1
6 R0 S  q4 |$ B; L8 b) k
2 K4 j) |3 _8 G; Y% B4 k2 ~
ifelse(other turtles-here != nobody)[

) |1 u* ^' n: u9 f8 y6 g# t4 S  B
5 h& t, ]- R4 D3 d/ D8 p5 Mset customer one-of other turtles-here

, z& q! @4 I  R: M: {% a8 @2 E4 k4 E* ~& {7 [" R# u
;; set [customer] of customer myself
( h9 A" Z. u) m+ c  K* P9 O
. f, ?# E0 Q1 g1 B; e
set [trade-record-one] of self item (([who] of customer) - 1)! m% j: X: X! @; I! N3 z: v
[trade-record-all]of self
( ^2 ^/ j9 w: r0 C; j4 v! q$ X8 K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' s3 _( \6 g( X5 U1 n  g
# x: Q+ m0 c4 L; t, ~9 g
set [trade-record-one] of customer item (([who] of self) - 1)" x" o- l4 I* e- b0 o2 u
[trade-record-all]of customer

4 j! K+ O3 z( z& W4 U( `% [/ s& s9 q' y6 U; T! _
set [trade-record-one-len] of self length [trade-record-one] of self
4 }  I) @) L9 C2 O

5 e& l. W, P8 A0 yset trade-record-current( list (timer) (random money-upper-limit))

0 n3 R3 a+ f' H, x5 B$ V2 K8 c. _/ W# O) S
ask self [do-trust]7 F; W. h) `& s. S6 k
;;
先求ij的信任度
" l: i& q/ F9 _* d3 t- D/ R" Z& G# ], ^9 H
if ([trust-ok] of self)2 g% F- q( L) U, q. \( i+ G' ^
;;
根据ij的信任度来决定是否与j进行交易[7 ~% }0 N! u& h  t  {! o  |# j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 k' r) r9 I% @7 T" [

( ?9 D! S% U8 n9 r[

' U' e! t0 j2 u1 j# T. I4 ^+ ^% c' ]6 r. e
do-trade

) i/ g" g2 k  ~2 z  D0 |* W
: ~9 G. Y1 q9 `. i( qupdate-credibility-ijl
3 W5 p8 r8 F8 ]$ U
% R' X5 e8 u$ n( V; t: @* ^
update-credibility-list3 ]& r, Z3 `' _- d
4 F. e) t7 O" B+ ]3 M, U
6 L$ S4 U7 K* G  a" j
update-global-reputation-list
' w! X, G2 A5 w" z, K: K2 G( F
$ l" J8 V& t: D5 \1 L7 Y  X! i
poll-class

, X( [6 g4 D7 i" M/ c5 R
$ B. e, v, j" O1 t' Q# _( ?get-color

" L- o( E5 G& J! y# S
) O, n: ~; ^1 V" D]]
) i1 V4 n7 ~* [' |* P4 G, l+ o: r' `( f. m0 i  _3 p; v  p; m+ Y/ ~" C
;;
如果所得的信任度满足条件,则进行交易
( g7 e; A1 z9 w
7 C$ Z( k/ Y. \[

! p& V$ ^, A% u; D# V+ l; m
% h, S+ A& G2 ^) V, S2 _' p! z) w! Q. Krt random 360

+ u1 g+ `0 s2 }3 c; y$ m" S( v3 L/ H2 e- ?# I7 U! n
fd 1

% _8 j- o- L3 |5 |2 a
% l; H, G  P/ r5 q% G]

5 T4 n% c# ~+ B: `' B" R0 }2 T: ^: q" F: v
end
8 C" ], l, Q1 b

$ O4 c9 J9 Y! G* `9 P9 tto do-trust * K: \  \+ o* s
set trust-ok False1 r; ?  B# t( j* M% N
4 z! \  D- h) U! b% c
* g' l! e, j1 O' V0 k# a1 h
let max-trade-times 0* c- r7 D5 L% u, w7 s0 F; m1 ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; [8 `# E9 l, h9 T0 \6 q
let max-trade-money 07 |' i% }* \% c$ {% Z9 C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ ?) [6 v1 ]9 U1 |" W+ llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" g7 L/ x" h; `' s7 b
7 F- l( e! m! J7 y5 O+ A  j2 K( q* F

; u+ s  T* y& G: N; Lget-global-proportion
9 z# Z  k& Z5 Z. Glet trust-value
$ A) e+ `+ \" |' s% P2 \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)

% {: r! n; d1 u; B6 xif(trust-value > trade-trust-value)  g9 r, k/ n9 C$ _) P
[set trust-ok true]
! f6 y: t& ^6 G' C3 T; Cend
  h/ e7 o( o" t# @0 b1 ^
' I! n+ @! `$ B# D( A1 Qto get-global-proportion! x/ s" Q, y& x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: L' Q; Y" e% _) q: n[set global-proportion 0]
5 ^5 ~' W* C- ]0 ~5 R6 f5 v[let i 0
7 d  t- C- F( Zlet sum-money 0! L, o. E1 _$ b4 R
while[ i < people]; v$ s0 _( T6 J8 z* {& f# I+ b
[
* {5 f; q; |" {3 j- O; @" [, b3 t  jif( length (item i
8 v9 [+ C2 d, J2 l5 c/ C[trade-record-all] of customer) > 3 )
% o4 k! f# ]/ W! f9 P
[- g, C( G9 x: V: v% O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 G# y9 ?' P) |
]
0 P8 k" c' c- Q" z+ @4 ]& ^# ]9 u. L2 q]# F; O4 Q; \4 z9 A; {
let j 0, k  v" u- S: x! x% q7 ?* F
let note 0
* b/ n5 K( \9 u: A' Ywhile[ j < people]2 X* H/ F/ G" J8 D; G4 f
[
: r" Z% ?" Y  F" p, jif( length (item i
7 f4 J- ?5 x- F' n" _; w8 h[trade-record-all] of customer) > 3 )

; ?( R5 H- b+ }5 Q5 r, ]- J[
$ J# ^( m' F" I9 `5 z5 n- e, ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 u1 @, c! {! o; q" ^, Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* G9 c3 U, K6 e4 N; j  F1 r9 E
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ [9 V0 C) p  M' U6 d0 d
]
) Z. C# L9 r. V3 b  u& j. []7 p5 @8 {+ F: _
set global-proportion note* Z5 s' C. m$ K. h0 z
]3 Q3 O1 g2 p4 L# T$ L5 i' o  ~
end
- F% V; q3 d& W
+ d1 N3 L4 A( q, z- c* W$ rto do-trade
2 d; F8 G6 U- Z. A* I4 R;;
这个过程实际上是给双方作出评价的过程
# @7 h0 h0 W1 O( y# @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: \) N2 P% j1 @$ }3 Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 _! U# D0 G. p& r) Zset trade-record-current lput(timer) trade-record-current
2 p: V2 M, X6 P( N; P;;
评价时间
# J4 Y3 t0 i; I7 g' C% i2 wask myself [& C# M7 I- X0 b( h, Z; G9 _
update-local-reputation
# f& l6 Q; |; o" z+ D' Lset trade-record-current lput([local-reputation] of myself) trade-record-current
2 J$ [1 a0 t2 f6 U]
; n' U: _, h! b. V, o9 }2 ^& n) Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  j" C( a2 O* z4 q! k0 |4 @;;
将此次交易的记录加入到trade-record-one
! _% n  B7 y& ?' jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! M( v  F! W8 K' xlet note (item 2 trade-record-current )" f' F9 |, ?5 Q) t4 m4 L
set trade-record-current. G8 ~' }, ~7 K; s% X
(replace-item 2 trade-record-current (item 3 trade-record-current))
- n+ z4 o/ V$ ^$ P9 U
set trade-record-current1 k7 }5 m( ^* k0 M5 d5 W
(replace-item 3 trade-record-current note)( Z  G$ \1 Y3 a8 t2 U

( [# _$ x, u: Y. `

2 b/ S4 W3 L4 [$ w6 kask customer [
# J. V' `7 Q$ ?# b  k/ Uupdate-local-reputation5 s& N* L' D# b; U$ H
set trade-record-current& w( {  M0 k9 L* H$ e# z. g- k( [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- R( B3 O5 U( ~/ c8 x% h]2 e& A0 e/ G3 B  G% p2 P

# O5 u+ Q/ I8 n" C$ V/ [

) `/ w8 ~- X9 U$ }. L  N* Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- Q; r* ^; Z, u9 M1 i
  F5 j7 p$ k" @. s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) @, x- u. W% _( `;;
将此次交易的记录加入到customertrade-record-all
0 Q+ k) L1 s2 L1 P! @2 Y9 Uend
! z* A+ E' @8 E! ?, @0 i$ {% \. D3 D: Q( `  Q$ f' m8 @
to update-local-reputation' n' u0 B0 ~3 [2 R
set [trade-record-one-len] of myself length [trade-record-one] of myself
: a" \% m  [. c. K. Z, l2 C6 c" v, B" A$ Y4 @9 Y2 s

1 {& W6 y5 b+ t6 T1 P! D;;if [trade-record-one-len] of myself > 3

9 ^. b$ d' u) U7 Z, Fupdate-neighbor-total3 a4 ?8 s, [, {  Y# S4 a
;;
更新邻居节点的数目,在此进行
, ^& d& t, y7 u: Nlet i 3
# _0 _  k2 x- X4 R, V) tlet sum-time 05 `" @$ `& O8 ~4 W
while[i < [trade-record-one-len] of myself]
: W; K" Q" o7 N* x[
/ P# z6 t: S& k0 Z2 t/ v" I% x4 y5 Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); {# y% {" I  w4 F7 Y) x
set i
- J) L( _' J# S; i( i + 1)

+ ?7 m, ^0 S, {; L' L. d]
+ A  P# q& v6 F$ alet j 3$ C# l/ K/ E) B# \! ?8 R" U: R
let sum-money 0. O) x' R& ~# v3 A' a  B
while[j < [trade-record-one-len] of myself]
$ A+ \* l! q& Z$ K3 r[
% V1 C* c, K3 j6 Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
+ N* }- m. c+ y1 P9 nset j3 }% y; _; z) O6 P) Y
( j + 1)
/ u( J' g, ^8 ]: S/ @7 r
]
& }3 D8 F& `, w/ E+ r: C3 Ylet k 3
& u- m  q7 u4 ilet power 0
0 X  ^0 ^: P* G  U+ o8 ~7 l) Z* wlet local 04 Q' B+ F# f. D# f4 i
while [k <[trade-record-one-len] of myself]9 T3 V3 v/ Q0 g, W& I
[. v/ T6 w7 l7 x( K
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) ) O- }( S5 s. e( {* E6 [# e
set k (k + 1)
, H4 H+ `0 ~5 {/ j8 B: Z]/ `3 P5 T+ O3 E3 O5 H
set [local-reputation] of myself (local)
' F/ n) J) t, H- Y5 \end
9 ?+ q) f: A4 `& G4 H
. ^# [0 Z1 ?! v: Y& u( D, Vto update-neighbor-total
+ l" H8 V1 V, u0 I  ]9 P/ O+ g& m
4 ], e  ]6 f/ K- e4 b+ f9 \  Aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ D4 F9 F& h/ G; {9 k3 E* [
  I' A; c: t5 ^* a8 X" V2 [
7 v1 D# s1 G6 r: D0 n+ O5 \
end1 N( z2 A+ V' f& g
, {" `' Y7 M, [! J
to update-credibility-ijl " A! H1 r; d4 K

7 I9 T# O- R0 ^3 j! c! M;;
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。' x1 A7 D, u5 M
let l 0
# k) A- u& K" G7 Cwhile[ l < people ]
. p0 k/ }6 J/ ?' ~0 M, i;;
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
% t$ C* y7 _% w[
5 U; K# V$ h0 }' o7 |/ L& Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- y5 `9 [& Z( ]6 P! f5 p8 e
if (trade-record-one-j-l-len > 3)
) u% U; w) W: Q# Y* P$ i[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
/ X% z1 u) x. V# x! G2 Glet i 3& c9 l0 S& s/ H8 V: E4 s
let sum-time 0
/ r. U7 \8 j* h0 h* V: d; @while[i < trade-record-one-len]* N8 j+ @7 H' D/ w7 Q8 I2 R* J; L
[( H$ z% ^7 Q- ~2 U9 N- Q7 i
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ W) l& v% o8 E7 S+ m. uset i
3 ]0 n# H. m  j: [) D5 z0 O( i + 1)

8 f6 O/ d+ x7 ^% x6 q]2 {6 G4 ]+ j7 l7 r
let credibility-i-j-l 03 _; p% p& @; o& ?
;;i
评价(jjl的评价)
* f) L9 I% A* \let j 3
2 n4 g) C: k  f3 p' N0 v) ]let k 4
- @/ o8 U8 y) z' |3 Hwhile[j < trade-record-one-len]* d  X& J8 j; x/ B$ @4 _
[
$ z3 O" w1 }& `7 I# b* q' V: X8 hwhile [((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# m5 q: a: U& Z8 F" i: i# d2 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)! N& m, C! ~$ g) k0 J# j" b% b, U
set j: ?( c( I( c! |3 z$ I. U$ A3 I
( j + 1)

: n5 Q* w6 I6 ]+ Z]2 H0 A1 u$ e4 a. [
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 ))
" [( u- I# a0 k5 l
' k5 l) v' D- y9 P% u+ q; x
2 Z" [$ I) Q- Z0 q$ w4 P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 @4 {, I+ c) U' k5 O+ s
;;
及时更新il的评价质量的评价
7 u: S5 H+ S" ~' Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- h% A  n3 K1 R# ~: K! c( O
set l (l + 1)
+ U; Z2 U2 y" F1 S: A1 X' o" ]]
1 I. I6 T6 i% V: J! I  Uend( b  x/ \, C7 X+ H. ?* k4 h

- Z( s5 w+ r7 w3 ~3 qto update-credibility-list
4 q& p1 q( y: R: c! \- O5 X8 s8 mlet i 0
2 R, ^: ]) H: k# ]7 Lwhile[i < people]
% @, ^- A* G! O. \$ ?( \- V[; c5 _! A. G7 Q$ h
let j 06 r- v5 F7 i* X: c* x2 s1 I8 o
let note 0( S8 @6 J- P9 \
let k 0
9 o% R4 a3 ?' B+ {9 x2 J1 n;;
计作出过评价的邻居节点的数目6 B  z. B- |$ Y. q! K# ~6 j
while[j < people]9 I3 \; ~! L$ z/ E
[
4 g$ K& w5 G0 u' `; [  [+ Kif (item j( [credibility] of turtle (i + 1)) != -1)- {3 W9 S6 w* b- i
;;
判断是否给本turtle的评价质量做出过评价的节点: k6 M; \0 x1 L  c% n2 p% p
[set note (note + item j ([credibility]of turtle (i + 1)))& p& K* p' r6 x$ Z. |3 e
;;*(exp (-(people - 2)))/(people - 2))]

! I8 Z) n! N2 _set k (k + 1)
; n/ Y# c; M' x/ a3 v]8 \; a9 E( V" v- S, p- g
set j (j + 1)
2 N7 |0 I2 N" d0 t7 O9 i4 A]5 |! i& ]. g9 Z) J* }% {! H9 x
set note (note *(exp (- (1 / k)))/ k)! g  X* s% y; j8 D5 r( Y
set credibility-list (replace-item i credibility-list note)- N8 U1 ]& e/ d$ u' p' J7 M. X) H0 @3 K
set i (i + 1)
9 C' d( L0 `5 H' [- s# T/ |. o]
  I+ B# X& F4 V7 w( s: oend
4 ^4 x! E# C1 ^" I5 P' C: o. Z4 V8 |6 _+ c0 w4 |+ p* T5 P
to update-global-reputation-list1 \) ?$ V: f/ N6 t- V3 J
let j 06 |4 w* X; M, L& H5 K
while[j < people]# r$ @, a$ }- k
[
% ^' {; m# l5 X: ilet new 00 D: s$ K" z( z& @
;;
暂存新的一个全局声誉) k# f, w/ q. R# n# L3 T5 _
let i 05 e3 E9 N/ l$ _) F" o( d# a
let sum-money 0% A8 W% [8 A" }! D9 s! R
let credibility-money 0
. @1 J! Z. U% L3 l( Qwhile [i < people]2 }1 U$ r/ X6 J! F, f/ j
[
9 z& _) W, O; v2 \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& H1 K& U% m$ c2 @6 [5 r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, V1 Z+ D  z6 a3 `7 \0 b' [set i (i + 1)* Y2 f6 l7 ?+ [
]
# D. \4 R% ?9 h8 [$ t% f8 Xlet k 0
8 O* F/ K) |9 L$ Y# Hlet new1 00 k. `: Z9 d% K
while [k < people]
: J8 E2 {  N/ k3 J- e[
, W9 S, {5 Y2 T) V1 |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: v, T; \6 A  h/ `3 u8 e1 B; G
set k (k + 1)  L6 Z# ^' A5 X: r, i
]
1 p6 e/ }, U2 Q- N; ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, m% i" D( X% k+ j# ?set global-reputation-list (replace-item j global-reputation-list new)
- T: f) {3 ?" }* N$ I- _6 ~set j (j + 1)
& @6 L* @" F/ n- q]; b& H+ v  {8 N, Q
end
# i! `/ F5 O: x* z. r# r& F
9 d- p5 H. A4 m6 @, B/ G2 o8 K; U4 z
+ ~5 |$ O: Y! l3 W: p
to get-color
. Q* z9 |& H6 |. y1 E, B7 n, Q8 w& q8 s! M
set color blue
8 s8 j5 o  t6 `) g) a3 n, K& v! k8 W
end
6 S! Q0 d3 Y" _+ C( i/ ]. Z9 [2 K2 f( s! B; L; s& I+ l
to poll-class  ?5 o& F: x7 V2 G( h1 h7 Z: v
end
# z. T/ R; s% f5 A2 N+ i; p9 a& H7 N1 e
to setup-plot12 \* \, f: \: I3 j5 k5 K0 Y

# |% V0 O) @! x# a! Gset-current-plot "Trends-of-Local-reputation"
$ k, R5 G, N+ F# E

6 e& Z: q" v6 E0 r* w* H. iset-plot-x-range 0 xmax

; e* Z) Q8 [: T! D! g
( {# p1 Y" r: dset-plot-y-range 0.0 ymax
5 ^7 q+ O8 M0 a( d. N" \+ V6 N: L) p
end
& Y$ W4 w2 {  k- O
1 l' C% r1 c8 i/ Hto setup-plot2
. O" e7 j* m9 ]
+ r- C) O$ i, j0 ~% K; zset-current-plot "Trends-of-global-reputation"

$ V% g1 h8 u( b/ X/ p" D: y) f8 U  z1 i8 i- p" y
set-plot-x-range 0 xmax
0 K& x% X8 N1 v, z: E
3 j9 o! f' H9 S, t1 b( g9 j9 ~$ |
set-plot-y-range 0.0 ymax
- G' k# |9 W9 A- E3 u1 o
end
; K0 Q: t9 q0 M  g2 S2 U) u& L5 c7 J
to setup-plot3
# I4 s3 n! E0 Z+ n% A5 I3 p* j$ k/ z5 |( \
set-current-plot "Trends-of-credibility"

5 O0 r; ?& J. V: w+ W
! Y7 l- N7 \" J6 K8 B+ E0 eset-plot-x-range 0 xmax

6 B  {9 r, D* y; C
8 D* k: X2 S' a! q$ }set-plot-y-range 0.0 ymax
$ z. M# |( S* L9 W
end
2 U: a0 j; m: c9 a; d3 A& G: g9 p  ?& ^1 s/ C' F
to do-plots1 _  m. i3 I, t1 |1 U
set-current-plot "Trends-of-Local-reputation"
" D4 k& F8 c6 _2 j& B7 @; B8 E" nset-current-plot-pen "Honest service"  G- A- ~- s2 ?, j
end
2 x; g$ f4 v. O
1 I+ c- g. V0 |  H! v[ 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.
/ ~% z  g4 d: e) W+ x3 a5 I  l  ]( ^! o0 S6 b$ H  {1 i' L
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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