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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:, D9 c# _; J& b. R( P
to do-business
2 X$ h6 }2 m- T0 N- e rt random 360
' S4 S- N4 ~' M5 j- [( |% K8 j/ v fd 1: C4 V% I4 Z* _4 \7 o# m# M
ifelse(other turtles-here != nobody)[
2 @& u" u# Q, T  m% f& W- Q' T& }8 O   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 L8 {' [4 p" r8 W, o" a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  g' f, \, G* W; H& t% v   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ H5 r$ @* a& g0 R   set [trade-record-one-len] of self length [trade-record-one] of self' r7 ]* t/ _& l0 R- f, E
   set trade-record-current( list (timer) (random money-upper-limit))7 ?/ r# L5 q% I2 K) x5 [
3 N* l/ @$ a; a1 v
问题的提示如下:
8 H# n. |& R- ?& o1 y+ M4 W% H% @' w! X. O& A9 D! A; E
error while turtle 50 running OF in procedure DO-BUSINESS' Y8 h: ?1 f# Z5 Y4 U) ^. L0 T& R
  called by procedure GO
& i! }9 D  W2 {& ?7 zOF expected input to be a turtle agentset or turtle but got NOBODY instead.& q+ ?4 F( q3 s) g9 I0 ~( T
(halted running of go)( {) [# F' J! W
' @  l) f5 n1 F6 }  C: O! o8 R& x
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~~
# q+ G% v: D) a  \2 M5 H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) o  {7 j" O7 C- L2 l1 K" W
globals[1 h; r& n& v& T8 c* s
xmax! V3 z" e( y% o* E) ?4 q
ymax
& @2 s- `9 m- m" Q+ eglobal-reputation-list* d' d( v" q1 O+ S. x3 u

5 h3 h& p. Z2 @0 \: _" N;;
每一个turtle的全局声誉都存在此LIST' T$ Z: M  Q  S4 P# L) G4 U
credibility-list
# g) W# v- K2 n! m# ~8 ~+ C;;
每一个turtle的评价可信度
9 `' a, @  w6 Y8 T8 ghonest-service
% ]+ C& o+ j1 k& n) ^( Munhonest-service
8 R, e) w0 h, p$ Qoscillation# m. V3 A; |: ^* H' w5 D
rand-dynamic
+ v2 c% Z2 z, Z]
" L- w9 c" T& T; g5 g
$ P4 ~0 o1 i+ r4 T1 I6 ]$ r: Cturtles-own[% J( f' N* s* ~; i* m
trade-record-all# Z9 I- U: Y; c- O/ Y3 f# E
;;a list of lists,
trade-record-one组成
3 M) |  z& g4 e% ~$ ptrade-record-one# h$ A- |5 u, K) I3 v( G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 I/ f- n2 Y4 O8 S
- P% I0 j1 p( W6 \! {9 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]]
& ^# Y. c6 e& T  `/ R! @# @& Qtrade-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]: O: D/ I: Z/ R; Y* T
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
$ A* i6 O8 T& L! kneighbor-total" I# @8 C5 e7 a6 G( F
;;
记录该turtle的邻居节点的数目. M! a( m; d: W- X3 F+ K8 Q
trade-time
! b7 j9 F5 y+ y" c7 h  a+ d;;
当前发生交易的turtle的交易时间% C5 o8 z5 ]' y
appraise-give. a8 }( f! W/ V$ f( Q4 w
;;
当前发生交易时给出的评价: T0 m& i6 N! @8 z; H8 y1 a4 b
appraise-receive# |( o3 c! t6 C3 b
;;
当前发生交易时收到的评价
! Q) e, t" m' L6 `0 b. Pappraise-time
. J* c$ q3 k6 {/ A;;
当前发生交易时的评价时间( g# D/ g7 I3 ^. t" b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: y! n# k( n3 r0 P1 Ptrade-times-total
) E  M' t, R) Q3 G  U;;
与当前turtle的交易总次数
* N. o! D6 @& E9 j: J( }0 Ntrade-money-total
/ t/ _8 k0 }9 A" w;;
与当前turtle的交易总金额
* R9 M- p, ~. O' N' @$ p8 H# Plocal-reputation3 C/ V+ w  D" G3 ?! Z
global-reputation& t0 W: z- t3 b
credibility
% c7 j7 {' k# T1 \;;
评价可信度,每次交易后都需要更新
4 W9 l1 K" G% [6 b, m+ h( ccredibility-all7 R: C1 A' ~3 h* f0 h
;;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
. J3 Z! I5 T) @/ t# \& r. l
9 y/ X% `3 K. h7 ^8 l, K8 Q4 t* x$ ~;;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
; I4 [  [4 F1 d' o) C# Bcredibility-one
4 H4 ]  p, h+ l% p  k% 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( n- C& X7 b+ Q# L! c9 r& K  b
global-proportion
# Z3 b2 }: A) I% V2 X4 Ycustomer& o0 b5 x$ o* J, U( a. x
customer-no
4 k4 r3 K4 ]3 P8 _& n$ ]trust-ok
4 }& R/ X- U; I, }9 c( ktrade-record-one-len;;trade-record-one的长度
5 o3 d3 _: Z. ^. P) y]' j2 Z, H0 B6 R, x4 }' V7 G" O

# ]; g. Y; s, z; `6 N% y;;setup procedure
+ n$ m8 z) V1 u6 V7 _2 @/ ?- Q; H6 q2 t3 z# z' |/ A% {& f
to setup) q# C* t7 T0 H. T0 o* M" S
% r) l# l3 ^3 o2 \( I
ca

" O3 O$ D" S' r  k
& ?+ g$ y. n- m0 }initialize-settings

6 x2 c, L; M/ Z6 i% x" F$ O" U# E5 y! b6 k  ^' n
crt people [setup-turtles]

  ]% L2 v0 p! g1 O+ y1 \* s8 Z, T1 q7 C  g. @; ]
reset-timer
$ n+ B" x9 I# O8 s
& X/ _* ~, [% a! h: ]0 v; e6 |$ k) `
poll-class

$ r7 K) D# `$ ]
% G; k/ D! f$ P" |7 }4 G1 `8 a9 u: Ksetup-plots
2 D+ q8 |6 m: g( I2 i

: E$ H- h; t& l' F8 L$ ~+ C  Pdo-plots
$ \/ y4 R, E, |. ?# x- F
end
. _: t6 w# r1 }; x' H( c/ |4 @! g; _% `3 x2 P, n6 E9 F
to initialize-settings3 L3 S/ L* T+ J" P3 c5 q$ O$ l
" X4 X: K0 L; c. |  L# i
set global-reputation-list []

7 l. j& y) u: |
! Y1 r: o/ ], |: Eset credibility-list n-values people [0.5]

  A4 c. S- Y0 G- Z2 p2 l  P) F' R7 D* F. q+ r* \. x3 ?( R( R
set honest-service 0
0 q& P1 B+ b! M. D

' t. k$ m. K8 |set unhonest-service 0
- R( Y! U! S! L5 f  C; c& u
, G( j1 w0 P# X' e0 ^1 A) N! ?
set oscillation 0

* Z' N; X% e4 X* Z& P& w, z  s- I' o' i
set rand-dynamic 0

7 h/ ]1 s* f! g5 Fend
- w. V# `' S( V+ o  t$ t' Y/ A  q7 l3 M. ~: I' E8 Q' t9 F) [% r3 r
to setup-turtles
$ W/ o' J% R0 c+ u  Rset shape "person"
0 N% |* J  j: x% u- Asetxy random-xcor random-ycor2 L" i4 p  H" M) K" U
set trade-record-one []
, K4 l3 s9 ~/ H3 e) _1 w3 ], N
8 R  ]8 V: [- P' S( U
set trade-record-all n-values people [(list (? + 1) 0 0)] $ i9 T; C/ {* |/ A2 {! x
8 n, [% ?8 w8 L; c
set trade-record-current []
/ Q: z8 A' \1 ]  `( N: B8 G( {set credibility-receive []
" m8 Q! X7 l  w8 E: W, aset local-reputation 0.50 X2 h5 E" \5 P9 L
set neighbor-total 0
- E% Q& ~( e  f; r* A) s7 Kset trade-times-total 09 `" T* n6 r+ D+ J3 {2 j
set trade-money-total 0
2 e" w; Y3 M! `! o/ _3 ]. n6 P1 Gset customer nobody
7 B2 ?9 ^4 d/ k! F  H$ yset credibility-all n-values people [creat-credibility]0 k) _7 M, w. f2 Y; i* h
set credibility n-values people [-1]
8 J( n8 y$ ~& ^  O  V* t  oget-color
; E: C! [( L( r( m( j( C
2 i9 V  q: u+ s5 R2 t! a
end
. x( ]0 p) D. l8 ?$ S, ^
  o$ j; ~2 Z- z1 J  _" Ito-report creat-credibility
+ w# ^& m: c) t# r% [report n-values people [0.5]8 P) u! _$ L. a6 {: ~+ g$ d
end
+ H# E. d0 O7 r2 k
# [( G( a* Z+ u% t4 wto setup-plots
" E" Y- N9 l) u3 `# q3 j/ P2 a9 W* ~) c% N
set xmax 30
  |8 n2 I8 w( k7 X0 Z* I  \

" m+ B' ^( |1 ^" u4 k( Z, X- Mset ymax 1.0
9 [3 x# d& q- t: q% w. j7 |
' o0 ]- I& m# A0 \; ^& {
clear-all-plots
$ C( }% _% C4 v9 c1 n  t3 M
+ a4 b& ~  Y/ z
setup-plot1

9 M8 P0 M7 y0 g* P6 @3 Q7 g
4 F2 a' o/ m4 N" J2 Z, v1 xsetup-plot2
  J) ]* z# g$ W8 [2 X# c
  [$ v0 G8 {' f3 _8 M
setup-plot3

# c7 R! h  [- f- qend$ b7 t  I, _0 D: |3 j

+ C, D& L- ?3 U;;run time procedures
. a% q4 G. m1 {2 N& ^# p9 N# B$ k1 `  }5 Q. p
to go
& [; h) o3 c& V6 m! O: a& N- a6 n' r1 r: m; R: W/ K, [/ R
ask turtles [do-business]
4 r7 L  i' u7 u; b8 p4 n' F
end. i7 ^- Z7 L+ c' C* h, y( `8 O

$ K& O% H8 W- E9 L) x4 g& Lto do-business
! @& G5 Q, [+ l) G9 X! j

4 V( W4 A+ A& A# C) ~5 U/ h' x* H6 X7 l8 g  p4 Q8 m! c1 Y( R, s
rt random 360

- m) \; r7 U& h7 Y$ Z5 d1 `2 P
# l# V" _3 {) K% Xfd 1

" t& H0 D$ l& [1 C% _
$ X7 V+ ?# Q" p2 J1 B& Bifelse(other turtles-here != nobody)[

# _2 [4 f( I2 U. `) U. n8 T, |8 _+ @5 n9 L! ?
set customer one-of other turtles-here
4 h1 C/ E  I4 c. X+ e

* f1 u; R# @. H;; set [customer] of customer myself
# U. n2 L7 e" g8 `

0 G$ u5 j( X! lset [trade-record-one] of self item (([who] of customer) - 1)
# |/ h+ k5 R0 A1 n3 p1 R[trade-record-all]of self4 E: J! n  C1 P/ J! M! @
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* D- j& C# ~9 V2 L! t9 U' `
6 y7 _; U! {+ C9 z7 E
set [trade-record-one] of customer item (([who] of self) - 1)
4 K& U+ ]9 A* c[trade-record-all]of customer
: e+ _/ w+ O0 W4 c" e' u  P( o1 N
4 p* f- J. K# I0 Q
set [trade-record-one-len] of self length [trade-record-one] of self

. Z: y+ K; K5 m9 P" e, r
. R) S5 X; [4 h0 lset trade-record-current( list (timer) (random money-upper-limit))
0 D8 z* Z) s! d% |: K2 c2 L! ?0 S6 O$ b

; C6 |2 P# j, i- i* Aask self [do-trust]
) W: L" h5 u, D3 q1 _" p/ L2 g9 S7 x# w;;
先求ij的信任度
, M- U1 ?8 K& O4 F
( J9 s+ S: Q/ T: Bif ([trust-ok] of self)
3 l% r# u# z# i& w, T;;
根据ij的信任度来决定是否与j进行交易[  _9 i: T5 v4 u! S1 R  X. w( D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 d" E: L3 ]7 w
: E/ P# W7 U( o) j3 P% h[

) t$ u5 ?2 L3 [2 U: G5 w4 ]) i* A  U$ [5 x+ i
do-trade

! @4 i3 @) C3 Y3 C0 B# h; b& B
3 I) O3 X: p/ M2 h  ?update-credibility-ijl
% b, A$ ^. d8 L" G* a: {* y
5 K  N2 q- A7 H$ V! u# _
update-credibility-list, ^, t& c  M/ m0 B2 W+ U

5 X4 B6 z! T; c+ V+ p
' t5 ~; d  k- h0 A$ I: _update-global-reputation-list

0 v7 v% p: A, @3 ~' |6 d( |
3 S  Y% l8 z  U. o% h9 Npoll-class

+ Z- i4 ~5 t; H4 V( `5 s" Z
# u% G) h0 }1 R( T; c& L6 g4 D6 i+ B( K; }" hget-color
' s! q- B! g% Q0 I0 L  i

$ L5 z4 x# o* q" J/ o]]
5 n) b7 ~! X% S" ~/ x
  H$ A9 S* e# L: n  B6 m;;
如果所得的信任度满足条件,则进行交易
, E8 B  X8 W: V6 M' |, k' u
4 ^: b9 F) o* E[
. u/ V  g# q$ }( }& Y3 ]
) ]" `- a/ ?( U) Q* |
rt random 360
; O1 v' p1 a3 I1 q: N! a

: }3 M: s( Z5 j; ufd 1
4 B- S3 D, N" K- B

8 E# N8 b/ P& v3 g3 |& U4 e0 {; N]
: s0 b3 C7 |% d# D
, {/ K8 f# e3 L& Y6 c
end

; O0 g7 D- j' C
. G5 o) I* y" ~( j% K2 J6 N* cto do-trust
' N" E/ {& g' ~set trust-ok False
8 {) Z8 [8 F5 k: k5 E
( n/ ^% ~- w, P: p
, @) H; q0 ^/ D+ Z+ r$ D! Y
let max-trade-times 0: H, Y, y; k* j/ Z9 G9 y" a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 o- h8 o( l% x# ?% Tlet max-trade-money 0- [& Z/ G3 O/ X2 Q- }8 v; c* o/ i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- Y) z" U. m8 Q7 U' R- Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 v) M7 S- t3 N  y0 D% _! L; b8 W# w2 s, E, @

( e# V; z) ~3 y$ Y9 Jget-global-proportion
( _! A: l3 d# Qlet trust-value# p+ \( m9 r! s0 A6 D8 s
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)
+ l+ A  q1 |. L* I
if(trust-value > trade-trust-value); C- y  M8 t  t/ M0 o
[set trust-ok true]
- i/ D! G- q. c. R& k) H# Send
$ w% G3 L  \8 s
& l' Q3 C, Q4 G5 U) d; V7 eto get-global-proportion9 o/ `( c2 M: Q/ L. s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; k. G/ s, d( I' [0 N[set global-proportion 0]
  g8 J) ^+ q2 L2 E- x[let i 0
- U- z" C% y/ o2 H8 U9 @let sum-money 0
9 S0 o6 Q: d) Y% H) ?& k4 D3 Rwhile[ i < people]
) u8 o+ p, p% k( M9 r[% ?, a2 e1 n' c, i: F5 P
if( length (item i
( y+ a; B) n8 G" |2 C# s7 y[trade-record-all] of customer) > 3 )

$ p) O( L- }! k/ g[
, U- g6 R7 y9 x( `: r9 W$ r7 Tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" X7 Y. N, W8 F9 S  m1 L]
2 k* k! B/ o0 B! O, T0 E& Q" U]4 Y' z6 s4 t+ a( x- {
let j 0
, ], x) j2 T5 A8 Y9 Jlet note 03 r- ?6 c+ U% |+ i& K
while[ j < people]
- ~. z1 {- U4 R8 K4 R[
' y' B+ G, b1 |0 \. Oif( length (item i
) ~1 y0 A# _- A  b# M[trade-record-all] of customer) > 3 )

* J4 E+ C3 r* \6 n1 c# e[* \4 X4 h' U! d5 Q( p) M6 o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& y& G" V  T+ c1 W) a; S7 ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# e6 p5 X% ^3 @+ X8 V+ `6 X- ]; c6 V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* f" ]* p. J* A+ {4 _
]
  M3 x) _& v# m9 U: X3 ^9 d+ E6 |  S]
- C3 N2 m$ s9 b+ W0 I, ^set global-proportion note5 s/ a- g/ ]" ~# }% @! ^6 V# W2 Q; J
]
  w$ d+ G$ ]6 \# @  }end0 p0 M9 ^  H6 L# ]9 n% \+ L! _
8 @! Q  E1 p: v, @6 r! E9 B
to do-trade
: }8 a, z# S' i% ?;;
这个过程实际上是给双方作出评价的过程
# E1 p) l7 X6 k- j- q- f# Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, v5 C& L$ ?3 b( F& d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ Y5 J( K* [2 Y8 xset trade-record-current lput(timer) trade-record-current% F7 |# q+ f  l, B1 K4 w/ H' X
;;
评价时间* s: V2 k; c& ^( ]" N% ?8 |+ h  ~
ask myself [
0 h& f" z. N- L) L+ dupdate-local-reputation
8 ?. b0 t$ n, n% L% L& fset trade-record-current lput([local-reputation] of myself) trade-record-current
) ]- G  a: j7 N5 G, V]0 X+ z. z4 w2 r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* b) Z7 L2 Q' B( ^# p) D" e;;
将此次交易的记录加入到trade-record-one
7 P9 X& O% h- i2 V1 r& h" {0 [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 v% p7 A- p2 O5 N; W/ Zlet note (item 2 trade-record-current )
; W2 [6 q9 s, `  x. C0 t: _set trade-record-current* v: L% X0 o+ Y- g
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ a0 V0 ~. F8 V2 \$ N5 m2 W3 t9 G
set trade-record-current
  D4 M4 t+ j4 Q3 P0 e9 t  T(replace-item 3 trade-record-current note)
, `5 [1 e  L$ ?/ E0 Q3 R* b1 m, k, \  n6 l* Z% Q

: B: [& t: z9 G8 P* A% e& y9 aask customer [. `( ^: [0 K6 U1 P/ r
update-local-reputation
1 K3 q+ z3 m3 s# h, x8 Q, \, `set trade-record-current; ?1 R- A" E) u5 Q( T+ a
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 c1 p% ^% @: ?: P' L
]+ t- q( z, X1 c/ [
( p" j0 A; u; p* F
) B' o! S4 L7 M9 J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- b- b- r) j3 N: K- e9 v1 p. S
' y! M& q0 f* h' }2 x* i2 B! D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 S8 |% b4 x1 [8 d$ z;;
将此次交易的记录加入到customertrade-record-all
1 E  D( o  E, ~8 Rend  e* q, E# h, w+ i1 w
9 G6 ^# W" b! P0 e
to update-local-reputation
" u5 K3 j+ M6 R. B# j3 dset [trade-record-one-len] of myself length [trade-record-one] of myself
  C) k4 I/ H2 k" d& U2 J6 ?4 }0 g
: u8 @+ x* w6 J/ ~
+ r5 B* a  j, j, H3 B, X4 @7 _;;if [trade-record-one-len] of myself > 3

6 m$ p  `. i; W+ y6 lupdate-neighbor-total
# M1 x. x; ^# i7 \* ~8 Y7 u;;
更新邻居节点的数目,在此进行; T2 ]- y% |) R' q; ?% i
let i 3) u" |3 M0 O" H  E/ H
let sum-time 00 v( r; J  h# Q  @# [4 ^
while[i < [trade-record-one-len] of myself]5 t, E$ X% t: r! R  ]
[
" h6 [* A( r6 x3 x; B' }; C) F( dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ Z# h6 M+ [& F% T( b& rset i
. P$ B. n8 n7 N3 \( i + 1)

8 B" \- h' @& e]
3 C/ E/ y! Y2 X. y1 `* Zlet j 3
' J' P& F8 L( d  elet sum-money 09 X/ _% h: u8 q8 k( x
while[j < [trade-record-one-len] of myself]
4 k1 v! z6 `0 o# A+ M4 }4 l4 T  j[
3 Y  H3 B4 ?; t# N- \% O* X; I6 Wset 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/ Z7 B- E+ N! J3 {
set j
% |2 S# H% {* ]0 W3 ^  U( @# l3 c( j + 1)

) h6 W, z( }, W]
4 P7 A+ y( [9 g, w& _6 N" E. glet k 3
; A, M& p. p5 `* z. ]7 L' _. @% Tlet power 0
# Z% \4 |% H, mlet local 0
' q. Q! i9 c) L- H  l3 ^while [k <[trade-record-one-len] of myself]
; e6 {, B0 J6 F# J* T  m[2 B8 b) F/ u+ @  H& B9 ~
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)
8 I+ |( S- R. e! P9 vset k (k + 1)
6 S( y+ |; G: ?* F% I2 `]
* G2 H8 C2 C$ c% v, T3 r1 wset [local-reputation] of myself (local)
, i2 H) t6 w+ [" }4 Vend+ v; X" h) ^+ n0 J
( A8 Z/ L* j/ G* S* M
to update-neighbor-total
' g& e" X; n: Z) m4 u- B
; n1 r( R$ l7 Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 H# P, j! X" y  N! u, `
7 K. j0 j! Q4 r6 Y$ M6 ^0 \

2 q4 G4 M! h1 ]2 Kend
$ m$ D* V6 A( c- Q' q' S' t3 G& T1 M1 d. s% v
to update-credibility-ijl ) ?+ g8 x3 J, \: C+ S% w0 W

- b: R; Z1 J/ o7 Z;;
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。% [9 M% @; K- x
let l 0
. C; Q: d& T: Z  mwhile[ l < people ]
( j" q2 c* S& l+ K5 R' _7 ~;;
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
$ k7 ]" ?6 z1 O% g+ f7 J" b8 y[
/ T) U# Y3 W, d; t8 ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 u4 _5 o6 [( J  }if (trade-record-one-j-l-len > 3)% `$ ]. s& ^4 e3 ^* r% }/ l+ p
[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
  A$ o$ l, j/ ~: Q! `3 w$ Slet i 35 Y- g4 X. _0 P6 H( O
let sum-time 0
! D2 }0 @! o; n* ?while[i < trade-record-one-len]
9 c* y) ?9 u% a7 v: n3 d0 u[
1 N/ w' \% j# M( y- j9 Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% j- {0 u4 `/ M" a, J% V! rset i7 \. R* y; \, @* v- Y) u8 }0 B/ A( L
( i + 1)

5 h" o8 ^, G" w( o5 Q) p; I]
0 h6 O. h6 ?% ]let credibility-i-j-l 06 v/ s# J% b' a' D
;;i
评价(jjl的评价): k. e, L+ F' `1 L, \8 c1 j
let j 3
4 p# O: E7 i* n, Mlet k 4$ X) T; m  ~2 u6 c2 I+ J
while[j < trade-record-one-len]
* m" a! k1 Q+ O8 p[. z+ w0 u5 u6 r  T$ h# e
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) f- c( O2 ~; y+ F# k+ ~5 u# |& _
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 Y# N8 q% [- rset j) o, c. a/ v# b% _$ s& J1 W+ X
( j + 1)
" k  Q2 z; t* r# N( v
]/ n- L1 z1 z0 }& ?4 W$ \6 ]
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 ))
5 ^' l$ i" S. I6 @6 I1 S' ]
; F3 B$ E( `0 |, e7 _
2 U' W; w4 B, |6 Z' A7 o2 S* u, C
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  f; J. x, Y  s$ b5 m  f  w
;;
及时更新il的评价质量的评价
; B& ~7 N- |; y5 H: q# j# i) pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- o, i  Y0 X1 E! u" d4 Iset l (l + 1)
, Q" h2 ~/ P/ e+ V) z]
$ G) H+ K; _9 j! t0 y4 Iend
: o  ]( V. o* m: ?$ ]
2 Z5 F9 N2 T9 V# V& J+ p7 D& Jto update-credibility-list" I; y! M3 @/ A2 v
let i 0
( q, E# A# L" `5 gwhile[i < people]
: E" Z$ q: o4 d/ J[
% a9 H- c" f+ t( Jlet j 0
- T, Y& T0 P* i! a8 C9 Tlet note 0
1 ~! K9 N& \4 r" H$ mlet k 0$ V7 o% T: x1 ^! Y! O) N* t
;;
计作出过评价的邻居节点的数目7 P7 {7 _0 n1 A  O# ]4 U' E
while[j < people]
) X! K# W9 S' d4 r1 ]) y( J. d[! ?4 U. T- Y- n2 J, o2 {7 }* K
if (item j( [credibility] of turtle (i + 1)) != -1)) {# q. j/ v' |' J% e5 F
;;
判断是否给本turtle的评价质量做出过评价的节点; N" y/ ?. [' Y  w
[set note (note + item j ([credibility]of turtle (i + 1)))
3 s# @5 ^& U; X/ o: h;;*(exp (-(people - 2)))/(people - 2))]
( p! |+ L7 F1 e+ Y/ ]
set k (k + 1)6 f3 A* d6 `$ B6 Q$ m" v" X, B
]( O% J. i6 n' `
set j (j + 1)
! D: W. `4 R4 |$ z5 x7 G: D]
* H5 A+ E* U2 d% q# A, tset note (note *(exp (- (1 / k)))/ k)
: g1 t7 {$ X6 d  oset credibility-list (replace-item i credibility-list note)+ Y3 f) X/ d$ R. q- j
set i (i + 1)
% D' U% |" H$ u! n* N]
& H* q3 O6 h& A% t# r6 Send6 M8 R0 B- \9 t

# u" h+ o) s: w1 X$ N% _to update-global-reputation-list
2 s" X3 Q, Q4 e% v, W4 Q) d" q4 hlet j 0  \$ S) P* }5 t5 i0 d) C
while[j < people]. F4 J2 E  n1 c& H
[
9 `. s  X/ D) s2 `let new 0# b+ T4 a1 |: E& p8 q, d5 {
;;
暂存新的一个全局声誉
9 Y+ y3 H' q% M' P& j9 F6 dlet i 0. T4 w5 J1 Y. w! l' o
let sum-money 0' x4 v- N+ j) C) f! |
let credibility-money 0, \; F: k# \# v/ o* N3 n& e5 @
while [i < people]0 [! W/ I& J$ S) t/ z6 n" z" V3 K/ g
[
7 [+ o' E, F+ R% Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ y6 R6 ^- Q$ ?+ @& R7 d: N* fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. `. n3 n8 d3 bset i (i + 1)
) L/ g9 a$ z; w1 |8 n# @6 d% n8 J]+ S. M" N8 M; }9 m
let k 03 p: f7 b! w3 o2 g
let new1 00 Y8 }" i* m7 H2 i1 D9 A
while [k < people]# V& {+ W7 \2 |6 N
[" L% B* _: J* n  h* h6 y* 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)
0 ?5 c$ Z( O8 n% `set k (k + 1)% |; D9 R2 c5 |; O2 K
]2 p1 A& f% a) \; W* Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 l9 X& l  X; _. n# F9 r
set global-reputation-list (replace-item j global-reputation-list new)3 ]+ T4 n# ~, b7 \
set j (j + 1)" k, y$ c) F$ v
]  w# ?7 U/ D; L  n/ o, g
end5 O* j2 R' T! m5 R$ ?+ e
2 B: {3 r, b$ d3 ~6 b: |8 B
0 X# I& R6 M, h! c( s; s1 N4 M
( _3 ~) |4 R) \" H
to get-color
4 T2 E( t, s& B3 s* [5 s1 e1 A# I) |$ O$ _" W
set color blue
! K. A$ X0 g# @" N, {
end
' o' Z. S: Y- H( c9 B& ]
# E2 M" a$ j& }" s+ h: N/ O8 K$ S' B! Vto poll-class( @% J& [: U3 E5 m: i: k8 v
end
8 Z5 w- \% t9 Y: Z* s6 q2 w% a/ ]
0 T( v0 O4 K% L& Q& s* Pto setup-plot1$ U* ~! \; ^5 z

4 \6 {7 a9 j7 I; z  Eset-current-plot "Trends-of-Local-reputation"

$ q5 e8 R& D: ^3 `/ n9 e9 M! v  W$ r
/ ]. U% x2 `7 y8 R' u3 M! b) r6 b, sset-plot-x-range 0 xmax
' B! F& _9 g1 b, Q) B

) d% v+ ~* ~* P) `set-plot-y-range 0.0 ymax
  d# |3 S- y3 C' z5 F4 I# M
end2 S6 {" R3 K# ~" _1 i: ]
9 ?6 u) _+ G/ o' f# Y
to setup-plot25 r5 Q! ^1 y8 {! n4 l; G
6 j* ]7 U, E4 q; ~1 `# i9 q" j
set-current-plot "Trends-of-global-reputation"

4 U! U0 @7 @1 {
7 V: E/ V* [" B- C5 ^6 y" R- x6 o: wset-plot-x-range 0 xmax

- ?6 Z* u  S% d6 A/ ?8 Z" j# i! G1 L
set-plot-y-range 0.0 ymax
# r' O% X* J- v* p% N' h
end
2 T9 b, j# N; h9 R7 S7 ]' b" d6 v3 y2 r
to setup-plot3
8 ^7 A  {( v. Q6 T0 y# j8 ^! O6 P  L) @: ?( v
set-current-plot "Trends-of-credibility"
" j9 P4 m7 X2 {. L; q5 k
7 r% n* Q) _7 x3 x
set-plot-x-range 0 xmax

! ^4 n4 f" `8 h# [; R' J' t% w  t. ?# ]* H( @+ K$ _, M# a
set-plot-y-range 0.0 ymax
3 a  ]2 a% p) X$ K- N: ^# V
end; _! y# g1 q* H0 W

+ v2 V9 f- j6 lto do-plots1 O9 K! b) ~; e( F8 ]& F8 R
set-current-plot "Trends-of-Local-reputation"
1 t1 J( u+ b7 P8 M  i; _set-current-plot-pen "Honest service"; t8 r8 ?" E. w' I3 v% e: Y
end
# N- b+ N$ e5 H6 s, R
  W* P' X; q# ^[ 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.
5 w8 I8 r; V1 G6 F- p! U/ N, d8 g7 ^: g4 y- ?
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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