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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:
7 E$ P4 H4 c: h: M4 zto do-business
  m3 `9 Q% u7 j2 E8 k7 Q- o rt random 360
2 f) j: R! J# e/ C8 p& A6 w4 t fd 1
$ J; \6 n. Y4 J  w: A ifelse(other turtles-here != nobody)[
/ r6 o5 X, G# e8 @   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.7 c  B# K2 D' r9 }2 ~1 [# w; \; ?9 G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 H* n6 ?  I* `% g
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- f% z% p3 j' O2 y- k" v+ [
   set [trade-record-one-len] of self length [trade-record-one] of self
; B! W- ?" B5 \4 X$ `5 a   set trade-record-current( list (timer) (random money-upper-limit))& s4 p2 r# i, h* P5 t' @  O8 `1 M) [
0 c) j4 R" N: w+ E! ]! j- r. m5 v
问题的提示如下:
& e" A! s( X5 O9 W1 G' |( m
0 x$ F2 S7 f) L+ n0 y0 terror while turtle 50 running OF in procedure DO-BUSINESS7 }) N0 V/ y9 {$ f; @& a
  called by procedure GO
; C! @4 V/ ?1 V1 ]  L. ?  zOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ X: Y% I( Q7 i. e  C* P( K$ K( X
(halted running of go)
# ?0 M8 {  H5 a
# U2 z! f+ I0 O% T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~~: g; @% L$ t7 _+ D1 {
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
$ F7 L/ S& ~8 v0 Y$ Y/ w; Z& [globals[3 T" y: ~+ _. {7 w" M
xmax
/ v+ J0 f1 t( Hymax2 S- F0 z9 |% M% M; l3 [$ A
global-reputation-list$ v- O( r; j0 E% }: H6 F3 G- |

) b8 z# b3 P/ |* i  d, n5 A3 l;;
每一个turtle的全局声誉都存在此LIST
1 T( a! s7 L+ [) V* pcredibility-list; P8 h8 R/ q" w, t
;;
每一个turtle的评价可信度
# z9 l. e( R  a" c: Phonest-service1 u3 k1 Y' M' t* R' Y* v1 D+ Y. e
unhonest-service
9 K7 w8 }( d  Q( ooscillation
$ H1 ]3 g" Q3 V% y, s% qrand-dynamic
# |0 F. |" @% H]
: @" }8 F) h$ `1 O
$ X7 K0 X- a# J# `% N, [) r  f! rturtles-own[
2 `- l5 e+ E* C3 H: w8 C8 Ftrade-record-all$ [: ~; r; `/ f# U7 a- h/ s" L
;;a list of lists,
trade-record-one组成
8 x/ u3 X5 b5 M3 U$ _( jtrade-record-one
* `( E3 f3 [/ j4 N, _3 ^* d# A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* i( W" |; `! ?  b7 u, M. }3 a/ U# w- x5 B% d
;;[
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]]) p+ q9 q- P5 b' ?% A
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]  z6 m# {7 l, Z, J7 X; ?2 D
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
" b, `4 R9 f0 j8 @( H, V9 J7 m/ Z. |neighbor-total5 B8 \, k, g* y( [- a+ R
;;
记录该turtle的邻居节点的数目
2 S2 Z8 k* h+ C: `9 C/ g* Gtrade-time: P6 j( v: x$ I, b# v0 E
;;
当前发生交易的turtle的交易时间! @2 Y4 v  w% P( a; j% [% @; [
appraise-give
# `* f+ _( t0 h2 q- k;;
当前发生交易时给出的评价6 {' p2 t! F/ U: M$ l$ _. q* l1 M1 R0 V
appraise-receive! r# n4 H* R; g5 }, ?  e
;;
当前发生交易时收到的评价
. F1 Z: K" s* z' Sappraise-time
2 d: y1 `- }7 w; R2 P5 J" w/ A;;
当前发生交易时的评价时间4 T, e) _8 j  c7 Y. [  J& d6 l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 [: j' k2 G% r9 e6 @
trade-times-total# l  l" v! G; j7 E, v
;;
与当前turtle的交易总次数
( `2 Z) Q! q- _7 Z3 ztrade-money-total
0 r  I+ s. H& C" \1 Z/ f;;
与当前turtle的交易总金额6 g% F' t: _, \. M' [/ i
local-reputation
) N4 g& k; H( ]' e7 S" Aglobal-reputation, u/ B  d1 P4 e! a8 q9 H
credibility  @$ ]# o/ G2 s6 Q/ a0 B
;;
评价可信度,每次交易后都需要更新3 P+ E  t, w" z( o$ g
credibility-all, K6 ?% A( y5 T, _& T0 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& W9 l6 g9 |9 U7 B% q

/ d' h1 A! K4 b;;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
& f, B, w" z- \credibility-one
, Z3 z, U8 W) j6 A# h4 s;;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+ [3 W1 S, U' \3 L! `% G
global-proportion% d7 b1 N- f5 \$ _# S
customer- S3 V: m+ \* ~# X% u
customer-no
2 I/ x4 m  i  E# c6 `5 r: Itrust-ok. ?8 X5 x, X+ e% o7 h% v2 I: A
trade-record-one-len;;trade-record-one的长度
; O0 C  _4 e" D]
( X) P# r6 A* \
1 H0 i/ T/ D& r/ }8 o0 \, M;;setup procedure
& q9 c+ l, l" ~' t; D
' s1 O9 E9 g% \8 pto setup
4 k+ r4 t) ], q- s8 o! _9 Q4 q( {6 [
: M2 w" K) e4 s" Tca
+ F7 L' z( L- q
. B( }6 [5 Y8 g2 w7 U# {
initialize-settings
* Z& j# ]+ d! u: w

- j0 s) C* P2 n+ i, v7 E9 G+ ccrt people [setup-turtles]

+ a: h8 W, r  }' L' |* O0 `3 ~  f3 N" i- H8 q9 h
reset-timer

" h9 l; `& ]+ S3 A) W4 T; E- t5 g6 Y0 e+ s" F, Z
poll-class
: V' f- _1 S# m1 N) i
& C6 l" T8 ^1 @/ U) Z0 E
setup-plots

& g% e& P, j+ z, O; B) {% d6 L
# S8 j' t0 v  K; l+ b, e6 Ndo-plots
# u$ J2 K* O) B4 Y$ Z
end+ R) F. f+ e: x% u, U6 N

) J6 I1 P$ ~" r  Zto initialize-settings% z/ F( J8 b6 R
; E# |5 g% {! X+ }; C
set global-reputation-list []
- g( W. A5 A) K$ f0 R
2 z1 @! t6 j  n7 S4 Y
set credibility-list n-values people [0.5]

  t: m  |+ d/ g6 @1 ~$ c  R( \9 ?* z+ e/ k" i
set honest-service 0
# o3 |* Z$ C# T) X: R' m

: ^. X) h% w( b# K& k& Fset unhonest-service 0

! M3 a' T9 b" J2 H9 E/ h
0 ?# [: j1 `8 ]- X- hset oscillation 0
. l% V8 t5 |0 L3 N: F. E1 s. z

6 A" N, d6 J  B+ o) Fset rand-dynamic 0

! ~4 F) y# R9 u. {" \end
. F. @7 ?3 J" Q7 s* N4 H: N' ]* V: i$ E; r$ X0 i4 d3 Y/ @. \
to setup-turtles
& Y: B/ {- X. N2 J/ k# b5 m5 @set shape "person"
2 ~- O8 i) T5 q( t0 [1 F( }setxy random-xcor random-ycor# r5 N. n# m6 V" M" _
set trade-record-one []  t. v5 d) Z; P5 s( Q# h
0 x: a9 Z  Q' I! M
set trade-record-all n-values people [(list (? + 1) 0 0)]
! U# L1 Y+ d- x- z& z' X
+ l! A' n& E( \
set trade-record-current []
* ~! N3 O7 G3 E8 w3 R0 t# Dset credibility-receive []
4 z/ G& Q4 A* [' K; u$ n! @set local-reputation 0.53 l! Y" O6 ]5 A
set neighbor-total 0
% g* m& s! t9 m: [7 a7 v& Bset trade-times-total 0  P8 F! [7 h2 w, e7 z$ i
set trade-money-total 0- U* L: L" F8 |0 M' g
set customer nobody
3 |! r. N+ ^) l& R7 X' Gset credibility-all n-values people [creat-credibility]
7 ^. g% K8 Y$ t$ g- u, B4 i" Oset credibility n-values people [-1]8 i0 @% N/ e& s- Q
get-color! P7 y, C% g+ s4 z6 Q/ ]
  Y5 n2 p- `$ H6 `
end
4 Y3 m+ A# ^' Q6 N% U( k! C6 x2 x. t6 U" H1 V7 F& m
to-report creat-credibility
' e+ o1 O5 j" ^8 B. ireport n-values people [0.5]" j' ~$ L' f6 b
end
2 e. F9 ~9 l4 [  W7 Q% }2 v' a) ?1 l0 B6 K6 z
to setup-plots; `- T# Q4 h8 z6 J3 @4 C* U
7 `. V- ~) D+ ]  y
set xmax 30

$ D. y5 p4 u5 f9 s
* B* U$ g- F8 Z" A$ p. V7 f& J0 ~set ymax 1.0

7 o+ y9 y+ _% c& Q6 h8 q3 E5 o) B  M- K+ A- [7 `5 Y, o- |3 j
clear-all-plots

) Q# u- S+ j( p& S0 _; u! z, G/ O
* S8 [- K) R4 O8 \: Wsetup-plot1

9 |4 p9 x4 Q3 @! F: N5 z5 c7 m, o- U2 q& L7 P  s9 S! J
setup-plot2

4 R9 P/ G5 S: y8 @
# c2 S2 {% I' `# lsetup-plot3
; l7 f' {( P' ~
end
, r7 j& G5 H8 j# A( n- r8 g' N& O$ [. r: c+ P; l) o
;;run time procedures
: ]6 @4 K6 b6 x; \/ j
% G/ p) o9 P3 h! G3 h- j. Bto go
: V& y- a; t% b0 {3 L5 Q% i& e1 _9 H) b7 M+ F) ]  L0 R
ask turtles [do-business]
0 ~  m& M$ H& O3 ~
end
, R. K% C" \6 v- L  o! [6 m/ J9 r6 M6 J
to do-business
4 E! @$ Y3 {6 m8 |- I0 I9 P( V

8 u5 M* j, w7 V3 g6 d7 \* k% a
4 L+ C, r2 P3 C1 ^: ]" frt random 360
3 \; I( D, o8 ]
  d/ Y# p- H0 Y; L  L, n
fd 1

6 ?" J7 i) S% ?1 b! H- t
7 d# M5 Q! l* i- z# Fifelse(other turtles-here != nobody)[

% n1 u* \4 g9 N( ^% P. T0 ?. U8 h9 d% D" F5 u
set customer one-of other turtles-here

" l6 Y5 I$ v; Y) B( i! R* s, v; s8 U9 j- O$ }2 ^' e( g  n
;; set [customer] of customer myself
, H$ C; s& g5 h: m1 \7 n
$ y) Q, o: b( s; b6 ?" x
set [trade-record-one] of self item (([who] of customer) - 1)1 c6 g! _0 T9 e
[trade-record-all]of self
$ e& t6 o/ y  B; r1 @2 C: d4 d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 o5 {4 D  x7 K. P

! y/ x+ h& Y% o% hset [trade-record-one] of customer item (([who] of self) - 1)
, N2 J% z1 w# j% K[trade-record-all]of customer
' [4 D, a% g; W3 _1 K4 o

, [- ]. g, _7 o( e/ Dset [trade-record-one-len] of self length [trade-record-one] of self
9 p: n% M+ R* v/ b$ c. g

: S1 W; B  n3 f3 x% D- cset trade-record-current( list (timer) (random money-upper-limit))

* a; K0 b! B/ J3 a" j5 B) T/ P8 ^. l, `/ H( W
ask self [do-trust]+ X% {( F* S. O- n  o
;;
先求ij的信任度# \3 H; ~& a# g- B5 u/ `
  M& v6 K3 E1 F
if ([trust-ok] of self)$ `3 h2 X0 ~8 O9 U2 i
;;
根据ij的信任度来决定是否与j进行交易[) J) b) }; T) G9 f! M  g1 \: K
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 Y  V4 p* L/ w/ c& K2 i& e1 y) m
* W" n& \' }  @- p- T1 U4 t[

, ?4 n% `* h. ]6 E2 O$ c. j8 R, A+ O$ o: H' G1 D1 ?: R7 D9 B
do-trade

+ p0 _7 o, r1 ~& A
$ t% q' k2 n% r6 O! ^8 t3 [" \update-credibility-ijl
4 A8 V* o6 X$ T% |: ]! J+ O) i
4 }" R1 m) D5 L" g2 e8 l2 q
update-credibility-list
! I3 l0 r9 w+ B
  R! {- W+ e; y8 R! }

1 o6 A# h, M9 h. j1 x/ q; e: L4 W/ Eupdate-global-reputation-list

2 c. B! J- P$ s, q! u6 w# ]$ F* G7 P
poll-class
8 I8 l$ N1 Z: W- K

+ ^+ \; w1 H8 p: [. Jget-color

( u2 s' B/ R; [. {. T7 c$ e9 s, d1 e* x, ?3 _. ]
]]- A9 H3 y! P! X: ~
3 d) ?: _! g  T8 y
;;
如果所得的信任度满足条件,则进行交易% d) d2 c6 M6 @& G3 i3 G
+ Z- y" v# V& Y2 ^' F/ Z
[

" j. ]6 V+ q6 X  W0 @. S  N! Q& Z$ d8 }, Q8 t* _1 |9 v/ a
rt random 360

! ]) n+ O; J2 N& y/ R# ^4 t3 k9 C) w; V% y  R" B
fd 1
% S2 N& @# N7 f6 l0 r  y
% F7 c5 G% M4 I" m
]
6 `7 I  S8 [1 N4 A/ A0 C) u

4 e# {& \; W, `% W7 Y' @! uend

# y) y, Y# e% M/ ?" j: v2 c; T8 a6 D- I+ V- F. E) Y9 }
to do-trust
+ |3 Y7 a' D) D3 C+ x* n5 z8 E2 fset trust-ok False% ?1 G% P. x" h, m
( l' H8 A9 c# L* C# m

. f4 E7 s( G, R8 slet max-trade-times 0
: g$ ?1 ?0 _3 r: N% q1 o. Hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 G# K5 F! ]* N5 S% J1 c7 M% Blet max-trade-money 08 @: j* N8 P" s' r9 a% |4 \9 o
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# f. X/ a/ c( O( H' flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 F9 M: F# n/ i

- R7 n$ A! g$ K1 W  `! `/ _
- S+ a- d* n- C, h; n
get-global-proportion% E& _5 N. A3 b3 W9 K" J) @# v
let trust-value
$ \* y: h! r0 _$ \9 Vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 P0 U6 w/ c& e4 a9 [4 b  g2 hif(trust-value > trade-trust-value)8 ?) k  C  Z" _& o) y: ]
[set trust-ok true]
& T! ^4 }0 P9 Y, B! Wend8 ^" r% A& j2 N" J3 ~

8 m9 I; r3 N: H/ w" `8 I! pto get-global-proportion
: X+ _- ?8 n0 R7 c9 t" N0 g8 Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: B. G" h) c! I; |5 ~[set global-proportion 0]  K  o, v  S6 I& h6 @
[let i 0' D9 ?' Y7 W5 Y, C) @9 k! o
let sum-money 0* [2 m0 K6 g( @
while[ i < people]
  k3 y; t9 B- p# v[
1 j' J, O( ^3 B# E/ x# dif( length (item i0 ]4 n1 {1 s; b7 \% m/ x
[trade-record-all] of customer) > 3 )

& Q1 Y& V9 g4 K( k* Z  U3 W[
, D9 A- O( }+ G! g( z2 }, |; j, [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; t8 V/ s0 `* l7 j* D]
1 E9 z4 g7 Q* h]: ^7 x7 j" Z* W% C) i! `
let j 0" q6 v8 S% }# O- N2 _
let note 06 H: r( l2 \5 j* z2 g' o5 u
while[ j < people]
3 K& R7 _. x0 B, I9 f. X& c& P6 J[
  v4 M4 q. `5 e8 Vif( length (item i- W, S: ^" @  \1 U; x( x) W
[trade-record-all] of customer) > 3 )
. T8 L- x$ v! G
[
. E1 u4 L! s$ X. Z1 fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 c/ Q8 `6 s/ S- k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( }& q- L  S4 e4 X" o; h# r( w: }% _
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" F4 J8 p6 N* {* m, C& r]9 E( v3 ~" P/ b
]
* t* C: ~) {8 p1 ~set global-proportion note/ c- z6 h" {* H, g1 d3 }5 Z4 d) r+ {
]# _  W' p) \8 D
end% d- r0 p2 H; {3 _9 c

- e& H" @4 h2 g2 k# D: k+ O& s4 Ato do-trade
6 d9 x8 \4 S, _; o; g4 w6 @;;
这个过程实际上是给双方作出评价的过程. |4 F% L/ R  O4 J9 L4 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ o0 m& }: |; o  U' Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ l7 p, j) Z# `  H$ lset trade-record-current lput(timer) trade-record-current
* i& ], H6 n0 F! x* B;;
评价时间
8 e* `( d4 c9 A' m$ U6 Mask myself [' e2 ^0 Y& m* t1 Z7 j8 n) B/ g
update-local-reputation3 K+ |) C9 @- `9 f( r2 j
set trade-record-current lput([local-reputation] of myself) trade-record-current. W+ P( Z0 D: j3 |4 S9 v: ~
]; u7 N% j$ S0 w1 U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 P6 a5 A* Z8 ]7 @;;
将此次交易的记录加入到trade-record-one
8 i6 w* K: Q8 m5 Z! e# A: P/ w5 wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# |0 v8 l. e+ z) b
let note (item 2 trade-record-current )3 y, m% P  h- g3 h2 L, b2 w
set trade-record-current& D$ O+ p- _9 T  m
(replace-item 2 trade-record-current (item 3 trade-record-current))

' E- o4 X  \3 v, O; N+ r. H" s5 tset trade-record-current0 m3 }6 Z7 }6 s
(replace-item 3 trade-record-current note)
& c4 v5 c0 E  H* Q9 M: u! u7 n9 s$ ]0 ~; H! Z* ]
' k" w2 Y# @. w0 Y/ j
ask customer [
2 P1 E+ I+ P/ R# w' C4 U0 uupdate-local-reputation
9 Y" `8 X& N4 P; |3 z2 Oset trade-record-current
1 y5 J# R: R. C/ v8 V  a: s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) d3 t$ E' f- _& Y
]0 Z% O3 N" o; i8 C! M0 T
8 R+ `6 x9 D8 z  S* P$ `
/ u/ n/ @7 r: ^; a- z8 I! t; l9 u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 h4 x" ?( i/ ], B
/ X' m3 j5 ]* i0 I2 @- h
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- l- F& G3 B2 k. `* q0 _  r
;;
将此次交易的记录加入到customertrade-record-all: w& u4 W8 D  ?$ N
end8 }5 n4 S) @! T7 A3 |1 t4 g
* o5 |9 v( w) W4 L4 B4 s' a
to update-local-reputation5 W$ j# `6 m- o: O0 _/ `! W, m! |+ q
set [trade-record-one-len] of myself length [trade-record-one] of myself" W: ^9 T% U8 f  k

: b9 U' O3 T) r, b2 `
8 C. a/ d" d. a$ b) V! H;;if [trade-record-one-len] of myself > 3

- U' w3 }- _$ Y( K" qupdate-neighbor-total
0 E. p5 _+ O/ h2 u6 k;;
更新邻居节点的数目,在此进行
3 b! _" z; t% j* p. j0 Tlet i 36 V! S  G6 H7 V+ O- ~" N$ M% r
let sum-time 0! F: W6 Y' e0 W
while[i < [trade-record-one-len] of myself]
1 a4 S! M+ _$ H) h& x[
/ R8 F" V$ w- y4 J, [, [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 ]/ `) f6 |9 z  a) j" A' yset i) M1 q$ A, j  [
( i + 1)
0 ^* S5 g. W' r$ Q; k7 [
]% A! d2 r- W3 s8 s3 r; X
let j 35 \* h6 [: q3 H$ x+ A
let sum-money 00 w: t' N+ }# r; J, A1 w
while[j < [trade-record-one-len] of myself]
% B$ x7 F& d9 d  O# }[& N; q2 F- n% z5 t$ d8 ~
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)% V9 l; R) K+ U3 {3 S
set j
1 B& M5 w0 n% [" @) [( j + 1)
4 b$ G% R( \4 [* q, I, c5 e4 z
]4 `. c  n$ \! H3 k3 `( w! l6 |
let k 3/ ~' j1 z5 W  o. d4 g, a" F  A/ ~
let power 0
1 }; Y) v2 d6 i, V5 Blet local 0
* C/ J; ^( o% m4 G2 m* i# N' N6 iwhile [k <[trade-record-one-len] of myself]% {, L; x# Z) d( p' b
[
. z  f+ |0 ~) K3 }/ N& [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# d" ?) y2 A, kset k (k + 1)
8 A1 R, _! j7 A% h]
# b. F* t  }( R) R; P: k) e& |4 zset [local-reputation] of myself (local)
3 l$ {/ F3 N) d& }/ }end
( D  |* ?$ [. a) `1 l; J% O6 R: a$ t6 r' u; h. X
to update-neighbor-total
  |+ Q4 A7 u( L2 j( \
6 `) _; f, Z  J* t- E1 u! lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ A4 ~4 T0 M* W: B" j  E# u1 F( d# _* Z$ j2 ]& O* Z6 d8 [
( t) Z# c4 l# ~/ g  J5 p2 e" |
end
& I9 K4 Y, D) i$ \; w$ H. d' a% L# H& o2 K$ t
to update-credibility-ijl & C) T- a6 O: I1 A- D
4 `# u8 V( ^# W' ?  g5 a- D/ S% @
;;
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。
6 m/ o$ t( V  q& G* [( ?- ~let l 06 P* p% M9 M( N5 I- I- J4 \
while[ l < people ]9 G0 p2 M0 y2 Y# M2 _/ H- D0 F
;;
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
7 c0 P) a( W5 }& a[
" V( P1 [. ]% ?1 Q3 D7 qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- F3 W& B3 h( F% u# U& w# J
if (trade-record-one-j-l-len > 3): B; k( R5 W( n8 q  }
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
  o$ d+ P1 {! p( K  z& m3 Llet i 3
# `7 m3 Z4 H& H* L/ e! ]  O2 Q, Clet sum-time 0
6 K# Y; v% e8 y; Ywhile[i < trade-record-one-len]& M! D1 x) j" ~* u
[
. \: k' B7 T, f- A0 O( M! N; u5 eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ Z% k2 y* ?2 L0 W1 o! z
set i
1 I. J. ]& |1 M5 b( i + 1)
  E2 o% y: u; f0 N  G
]/ m1 p9 x: i9 ~9 I
let credibility-i-j-l 03 A- O1 T- ^7 k
;;i
评价(jjl的评价)
# r* k: F0 G$ z% ?. t8 Tlet j 3
  [' h& g( ?+ g8 c! I; hlet k 4$ }+ t" i2 }: e! D5 J1 G
while[j < trade-record-one-len]
4 U: ]  w, ?  ?% O/ |[9 P) E0 Z9 M+ v1 d
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
. }" O" a" Q$ I- J# O6 b* |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)9 Y" T) K9 Y( }
set j
) U% q+ s5 O$ t5 c! l# J( j + 1)

% p/ P% Z* q! G9 D]
9 O: I9 }5 v( l, e' v! aset [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 ))7 F2 R8 |2 _4 `

0 h2 a& p' v7 h
: b" [( H+ `% Y7 K4 h: Z  A& l0 G
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! F) `& J- ^9 O;;
及时更新il的评价质量的评价
, t; ^' W# F# a* F; _# h$ Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 a* ]& z# `( w- `1 c' ]
set l (l + 1)7 R) `% x1 G8 M; a1 G% g
]
$ O; S" B& B6 D$ C) Yend6 V" p7 y2 O3 \5 G! F

$ V  J; |  D& ^% I/ fto update-credibility-list
+ {+ ]  h! G: vlet i 0+ o* ?- ?( t/ c0 r$ z
while[i < people], `1 u2 q& i" |- l# v& [2 `) y
[
3 [, Z7 b: B9 r4 glet j 08 K6 u5 L" R# E2 e
let note 0% l+ s3 c7 l2 P- g% P) X* L
let k 0
+ {* }9 e* {0 ]5 R;;
计作出过评价的邻居节点的数目. D; `8 S* B& n3 k! ]' x  c
while[j < people]8 O+ i) S- \' V: V
[
2 I& P" b1 Q/ y0 G' X2 cif (item j( [credibility] of turtle (i + 1)) != -1): e) Y' y* h3 I) r1 T$ ~
;;
判断是否给本turtle的评价质量做出过评价的节点7 S% d4 m4 y: ~: T% Q4 w
[set note (note + item j ([credibility]of turtle (i + 1)))2 j9 @9 Z; ^4 Y; `3 s2 ]
;;*(exp (-(people - 2)))/(people - 2))]

1 ^- t  C6 L4 I! Y8 G1 D, p9 Nset k (k + 1)
, d. C. D# O/ ^/ x# a2 M8 c]2 @  ]+ l% G$ T: Z7 x
set j (j + 1)  l& K3 \3 Y" F& w: l4 D! r
]/ {- I, L: T4 e$ ]
set note (note *(exp (- (1 / k)))/ k)
2 f- Y1 y* }- p; A( `1 @set credibility-list (replace-item i credibility-list note)
. q# U# b+ M- T1 c  ^set i (i + 1)5 q" [2 T9 s" l6 U
]
- `+ b6 H! {" ^2 l+ S' K) h/ wend
: ^1 F4 f( J, `- P1 Q( r& f, s1 z$ \: D3 `
to update-global-reputation-list
3 w; ]. k! c+ Ylet j 0
# R8 J) |# |( s( Wwhile[j < people]
) p8 |0 Y4 t% i8 V5 T" Z" l# q[
/ `) H+ t+ H3 Y7 o( I$ f, Nlet new 0
- ^+ Y; j) o; T% S;;
暂存新的一个全局声誉
# i3 y& H+ Q1 `let i 0
1 H& Q1 R6 H3 D7 ]( T3 w0 klet sum-money 0: o/ x% }3 @4 b, [. q
let credibility-money 0' w% H3 ]+ A  W9 [6 ^9 Z5 O
while [i < people]
5 G, y. c* u( H; f( k+ y5 V[" V) |! d, {7 |8 b6 T4 d! r+ t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% H# m& P( ]( \" ]* U" vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). E: q4 e, B- A- W/ b0 O! t4 D8 g
set i (i + 1)2 ^5 G0 h% B6 B  ^
]/ f2 {% H. r" n* g& \
let k 0
' A6 i: P" C) Q  C  Hlet new1 0: ]$ G- \! @9 H" u( E
while [k < people]
0 T: m5 L; y5 ^' G) B, O  b' j. W! h[
' g" h* s7 o# D4 R: V0 z2 P( Dset 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)% f  a* B$ V: b
set k (k + 1)
$ L1 f) t3 p. Z% x2 k! v]# U' v+ N- z1 }0 [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : Y+ }; _9 q  L6 t* ^: Z0 y
set global-reputation-list (replace-item j global-reputation-list new)! Q( X+ o" L- l/ n: Z
set j (j + 1)3 |5 e* A: @( ~9 R9 d4 R
], {. I5 G/ U# V% C7 Q% z
end, A) W: Z$ G9 p' S! i

$ O7 @8 G2 B4 O6 A( e  i1 u* R$ F$ E9 A' ]

4 i2 U# H$ ^2 V4 Cto get-color
7 K. Q) V4 T! B1 G2 ?5 D  X  j; s" _3 b% A
set color blue
% v5 l" Q) U  T5 X( u7 h+ V) A) a2 M3 e
end
; [* {4 i* |4 P/ Z8 c
0 Q3 V- e3 y" B( i3 t6 t& k( O) mto poll-class
. H* d, k7 [6 t1 T( v) Cend
5 D8 ?6 Y8 R$ D: L$ l. v+ V
6 N' D2 {8 j  u! J% U1 \) [1 wto setup-plot1. e) s* ~  G7 i
/ C( {9 W' e+ n' w
set-current-plot "Trends-of-Local-reputation"

1 Y4 q6 N$ f5 ?( Z% b# @) u0 y5 K/ [- L  f% \# K
set-plot-x-range 0 xmax
6 i; z# \" p! P; ^* ]2 u- V4 r+ `8 V
5 d" C, D$ ?# n( G4 u( e4 g6 a
set-plot-y-range 0.0 ymax

0 ?) \' n5 H5 f( I7 R% mend
8 b/ _1 {- i5 ?1 b( h% M9 j9 W5 @5 X- L. `7 h8 x- X# D. s
to setup-plot27 ^4 i9 p, e+ K9 s

' H1 W+ N, \2 n( aset-current-plot "Trends-of-global-reputation"
1 {$ }! w0 `1 w0 J- A

# x  d( V) O/ P  tset-plot-x-range 0 xmax

" h; Q7 `1 C) \( w7 |' R: O8 w; A3 J1 q2 N2 ?5 J
set-plot-y-range 0.0 ymax

2 |4 {$ z( k" j9 ]; g9 t. _end
# y, s6 z8 q0 B! X$ f  c7 _1 s$ g6 y% k
to setup-plot3
+ |/ Y& k7 K- s' m( e' a0 g1 b+ z$ V: j! }1 p, A: r9 b: e
set-current-plot "Trends-of-credibility"

/ b: N. @/ D# t' P
# ]* T( m% H$ S; B& q  @$ jset-plot-x-range 0 xmax

) R9 a) z" W+ L/ b3 x
  h2 c2 T$ R' w: T. Lset-plot-y-range 0.0 ymax
7 e9 q  N5 i5 A' V% g
end
, c, m9 Q$ I8 F1 M4 [
5 E, R% F# t, v, ?; k( nto do-plots
# h3 d2 w4 P& C) q) c- N2 c$ Wset-current-plot "Trends-of-Local-reputation", j3 A& v; F6 O+ Y" w
set-current-plot-pen "Honest service"+ p3 X4 L- {! K  w0 W% h- q) c/ Z
end5 Q8 p4 {3 \3 t  {% ]6 u

$ z. |' o$ e1 f4 m  x! ~$ w2 ][ 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.1 |) K$ H* d' _* M9 I

' M5 P# h1 {6 K; T; V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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