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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:
% Y+ V3 l" X2 y6 r; l$ q) bto do-business
3 y- k- e7 Q* n. V rt random 3604 A0 p( B4 ?5 }9 u# p( M/ `
fd 1
% M/ h5 u' l2 `! r- K: k1 ?% c ifelse(other turtles-here != nobody)[2 `! n" M: }, _, D' n
   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.$ R  B& _6 G/ w) A$ Y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + n& r- V1 K$ \' i  P3 i$ {3 m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. R; J& I! v+ {" L+ v9 x$ y1 ^   set [trade-record-one-len] of self length [trade-record-one] of self
) b- K6 X! {; }+ B9 c   set trade-record-current( list (timer) (random money-upper-limit))
2 b: _2 B6 ^; I: `  B, i  x+ m. b, ?
问题的提示如下:3 ]: R: s6 |6 N) L6 `
. W  P" H3 p1 d* L7 q3 C. f
error while turtle 50 running OF in procedure DO-BUSINESS3 w) l- f; z7 }4 R
  called by procedure GO
* c: J2 |: y. C) F, `6 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.9 O4 M9 |/ r6 X$ C2 f' {8 W
(halted running of go)' j* V9 z( E6 J9 F; B; \" k9 Q

1 ?* q, ]4 j" d5 z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~~7 C& E7 h* Q2 R7 j. S, b
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  M1 K5 _' C* s7 V1 P3 G+ I
globals[
7 r8 P0 d3 U9 j% Q- s4 C& bxmax$ l$ g- ^& {" M: z
ymax
( r+ v5 q* W) ?, `. Hglobal-reputation-list
& R; a( c- }& s3 N
/ D  E2 ]" i1 n6 u* X( x- n0 Y;;
每一个turtle的全局声誉都存在此LIST8 A% @& S  D# S! V2 e& G
credibility-list  v4 H  I% D( D
;;
每一个turtle的评价可信度1 R0 H7 O8 \4 X
honest-service" |: }7 P- Z: C6 U5 i& Q
unhonest-service) R; _2 m& }) t1 a+ P
oscillation0 c. Y- K' n0 t# _9 |  c; D: C
rand-dynamic
4 m- l0 n4 l* X8 ]]% L: h0 l$ q0 M+ F) i
, z1 y& p; g0 A( v1 k
turtles-own[+ L4 m  G$ H0 v/ R$ H. @) |
trade-record-all
4 A3 m* _, d. J; w9 F;;a list of lists,
trade-record-one组成
5 Y; x9 O$ T0 |( D4 ^4 _1 @  Ztrade-record-one
, ^' r+ n/ S" h5 G$ S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- v5 S, H9 S3 K. T# g9 A
' D2 E( Q! N: G;;[
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]]; w6 e' x9 c( |$ o5 l1 d# [
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]
. Y/ u2 t0 N& 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
$ e7 p' W/ ~8 i7 \' e2 n$ _# l) f, Z- Uneighbor-total
+ R7 M; s1 K/ F;;
记录该turtle的邻居节点的数目9 n. i$ s0 S' _
trade-time, E9 o" v; M, Y- Z- V
;;
当前发生交易的turtle的交易时间
- T- O$ }; X* s- u$ Pappraise-give" [) M* T" J" }* I* ^* h
;;
当前发生交易时给出的评价
0 c7 Z  z* N) C9 @1 \7 }appraise-receive+ p2 l" |& L' ~
;;
当前发生交易时收到的评价
) X8 N# k0 V: k+ {9 Pappraise-time) n) L2 S9 g3 r: J/ u& e  d
;;
当前发生交易时的评价时间2 Z) q, f+ g* y0 ~$ m9 T6 j0 o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 P1 u: G8 N. s+ }+ U. q
trade-times-total
4 N6 H  |  ]9 k- a;;
与当前turtle的交易总次数7 l, `! @: r( N, A
trade-money-total. s0 q( u9 M5 Y2 t& m4 C/ q
;;
与当前turtle的交易总金额; C9 D  w7 s5 E( s, F/ B4 p
local-reputation
' a' v6 e) B  }& s8 B, Q! t" F- sglobal-reputation
3 _, }  a% P' m" t6 Gcredibility
2 n  C& a) y' g) g( I2 S;;
评价可信度,每次交易后都需要更新* n# z# W2 w. F
credibility-all5 N) {) J/ p+ ^" I5 M
;;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
& g0 H+ k9 o5 F
1 e- a" t0 D, C, J;;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; y1 U$ U; C/ f$ p' ?
credibility-one( G- S/ u" ^  Z" |  e1 s1 Q
;;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people3 r% t: N: O' w7 a- l
global-proportion
" g( Y* _, O+ M5 w6 Ecustomer" n- f) o: Z9 y+ d
customer-no
1 V& H8 w% S) }( L( atrust-ok
& ]0 p1 t" v' C* Q' c; utrade-record-one-len;;trade-record-one的长度$ [6 Z; {- P7 X( u3 a
]4 q- k: b. m  H: i
& e* |% ?7 T8 e9 v0 D* X
;;setup procedure9 X/ O6 y% e- z& ], X9 p
  @: y; v8 c" @4 F
to setup
% I" K% e& V4 \0 b9 h  I: n" I9 G
ca
5 |: X4 x4 L, N: p: Z8 U+ S# p
: \2 U# e" s4 L) I& n
initialize-settings
' K4 R9 V5 V7 [. P0 \( H

; O9 E5 S4 g# u5 @crt people [setup-turtles]
0 F) W$ c+ t! V' T8 u) n

& W% V1 c9 a  \reset-timer

5 k$ u6 L7 o0 P& a+ h7 T  t: e
' g& B7 C! d; t4 q7 ~poll-class

; t$ i% U- v$ ^) x# r! y! O5 p9 H  x2 X: g4 o
setup-plots
+ c7 h9 w- _  P+ r0 k
7 C! a# {- o, O. \% s/ s( {9 |
do-plots

1 F+ E. \/ }! m+ R3 K; n  c- e& f/ fend
# M1 {+ H# O  Y5 K0 I0 |: _% Z) O, P0 t- i% |5 W
to initialize-settings
6 s, d5 }3 l1 K- H( M  ~8 R
2 C: @9 x: f3 W" wset global-reputation-list []

0 ~+ a( S/ U% D
6 E. `2 l$ _: |( i8 d! D' c; Mset credibility-list n-values people [0.5]

1 i3 Z9 p! a$ M' I7 X
4 ~; U3 D. H* ^: U& v" }set honest-service 0
' }+ B% F$ i1 u* C

& Z% y9 X, E, O/ c- j/ \set unhonest-service 0

" r& b2 J6 m6 P) t# q' n( X# N. {2 r% }4 Y  ~
set oscillation 0
! q& o/ C% N5 y# Q: y' A

8 c3 }4 |. ~) v: xset rand-dynamic 0
; g% J2 T( J" G7 a6 N8 e
end
, y5 [3 w5 C2 [8 q% S2 Y
" ?$ ?- e' e) B* rto setup-turtles
* n4 Y- I  W7 P" |% X9 oset shape "person"
4 c/ N8 ^8 C' E3 H- |+ ksetxy random-xcor random-ycor
6 I/ U: p+ \6 H/ E- Z4 @: \; r4 Tset trade-record-one []& Z7 q2 F' g  h: o# K
6 F3 z: a9 l' T; k
set trade-record-all n-values people [(list (? + 1) 0 0)]
& f8 P' E) @, C: U) T, Q, G) f

$ [1 H9 u- d; u% Mset trade-record-current []8 |2 o4 }5 u! D7 u2 G" y3 w
set credibility-receive []/ }7 c" n3 v* c/ T
set local-reputation 0.5
4 k2 N  F& g" |! U6 Dset neighbor-total 0( }6 f7 y  t6 X1 X
set trade-times-total 03 ^" G& p3 O% o" {2 e
set trade-money-total 00 e- p, K0 v  v3 M0 a; _5 `
set customer nobody9 ^* A# R5 b! z5 q6 X$ |7 i9 m
set credibility-all n-values people [creat-credibility]
0 b2 R8 C0 c$ _$ j8 b$ _7 Q  k  ~* {set credibility n-values people [-1]% S9 [6 B, l+ r
get-color2 l* K  Z4 g' ?' u0 ^

& z3 \; n; |% n5 z) N  [end  M: R* A- @! R
% n) f9 S5 A) C
to-report creat-credibility! G1 K2 z1 r0 `) A
report n-values people [0.5]
! h7 W5 k9 ~- D" Vend
/ D/ Z& G* \1 f
1 o* B5 T) ~  Oto setup-plots
1 w3 Z7 [# S! a# @7 [! {* C4 L$ E( A
5 f+ A' R; c  e, K3 qset xmax 30
) g% z+ {9 P2 y1 K

4 Y# v9 U3 k9 c6 B. E8 q# d/ yset ymax 1.0
% P( l: K6 @1 T8 J8 W# ]$ C6 J
2 D4 E6 V  v" C9 M+ C
clear-all-plots
4 n/ F  h% E' G  J* M; Y
' b" n9 m% U9 G- P+ E5 h
setup-plot1
! O+ \6 s2 A9 ^* z

! w+ g6 |# p3 `0 [setup-plot2

1 @5 |- M) R' ?$ W7 P- E/ Z' D$ \* f5 J" R8 i# [$ t1 e
setup-plot3

* g4 @0 Z9 y1 p' [: _5 i4 C' c, Yend5 C( l; k6 C+ Y7 b' S" K
' k% r- R, k3 G- D
;;run time procedures
' p, A8 n. n3 R& o
, P2 ^) u* v- n, d, j& c/ Uto go; ]# W% H6 k( l8 I

: o+ t1 Y. i/ u2 d, Wask turtles [do-business]

# U4 I, l' }' x8 q" y/ s9 Wend
& y, N) I# ~1 ^- e4 Y: b8 R
/ z6 Z4 P1 \$ Q* Rto do-business
5 L4 ^) c4 a; W# T: ^0 M

0 q5 k3 b. s. K8 G0 b4 Q9 ~+ X/ p. o7 x. j+ e6 `6 i- N
rt random 360
- T% Q8 ]% }- W! h6 S
- I1 b2 B, E8 }2 o% ^; F
fd 1

2 R  ~  q8 A7 f7 V# E/ j) O
' v& A, O) {3 H1 y$ F0 q2 Q5 sifelse(other turtles-here != nobody)[

  p  S! L+ o4 V; P# ]( b
  [6 c& u- ^& \! p# aset customer one-of other turtles-here
3 P9 m& t; V" Z! E
" L& X" n) g' a
;; set [customer] of customer myself
& z# B4 a" l! a2 w$ i

7 G! |7 o1 e' X4 A* y8 o) Zset [trade-record-one] of self item (([who] of customer) - 1)
/ P8 `1 w# S5 I+ `1 c2 q$ w[trade-record-all]of self3 n( }% \/ O0 L' J, b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 Q) F, _% W/ o+ S* S3 c" h
6 T! c3 }) j% q& z( }
set [trade-record-one] of customer item (([who] of self) - 1)
4 ]: e1 T! N/ C) u. W) m[trade-record-all]of customer
: i$ n: A; X7 J, o4 N8 |/ N0 f$ l& E

! C9 Q0 b' @9 t# D0 kset [trade-record-one-len] of self length [trade-record-one] of self
+ Q9 M( _3 y- I  N6 r
; {, _) u0 P. W; N: X7 q$ j& A
set trade-record-current( list (timer) (random money-upper-limit))

( d1 G2 H7 B- o* ?) G+ \0 L: a4 \; f+ f# q. R, W5 i$ q7 g5 C; X
ask self [do-trust]
4 t/ q% H/ u  W& r6 F* o5 o+ `* |;;
先求ij的信任度: y, h! g( T. E8 r  m) _! L% C
# E* L7 P& Y( }, V
if ([trust-ok] of self)
2 S7 U/ n" A- _+ \;;
根据ij的信任度来决定是否与j进行交易[
1 r6 F- ~( q, j5 F* Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. I, J+ S# G6 ]# D7 K' ~+ y2 p5 J$ g/ M7 E
[
. g6 C: t$ |- w8 n4 K2 f
/ |4 }/ L0 }! C2 b: j3 a3 D
do-trade
8 M2 V% Y( M# k$ _5 L: H
8 a, n' e+ S& c0 o3 T9 u* d7 T
update-credibility-ijl

( t1 i* ^& J% T. r& {& l! b+ ^/ _' H0 [9 ]
update-credibility-list
% b( E3 G- T% ^

2 {- Z. i8 c, L$ D  }- H- }# Y+ ]
- n) B+ d- g8 U! m6 zupdate-global-reputation-list
: p- e5 F8 H# j
, L/ h' B# U. Y" L/ @% g
poll-class
0 p! B! ]+ {6 t% z" [7 E
  [3 B( K8 f& O3 }
get-color

: `% }. I' m  f6 M# h
  m" M) {/ a9 w]]
9 y1 S) ^9 a/ a" S, o
4 q- X4 l% n' Y3 @;;
如果所得的信任度满足条件,则进行交易
# @/ r' }! P' w! w$ U/ M
4 _) ~5 `, X$ y1 M6 }; e$ ~. {[
3 r* {# x! Z/ ?" ~1 k1 k0 m

* z: c, O/ K7 yrt random 360

. b4 ~; M, {  ]' c! ]- @2 P! g1 K& R6 j
fd 1
8 _1 z3 a9 v# `
: G& k, _$ w1 G, B: ?
]

8 \# `, N& k3 c
" M$ y2 O5 ^4 ^9 x( Z; z* Aend

, [- \3 F7 B7 @1 y, p9 ?+ Y) s3 \9 b
to do-trust
$ H( g, h% k7 {" J- Zset trust-ok False
! q$ b( U3 k: \$ ]/ \9 Q/ s1 W* {: q1 ^, n; C7 |: [
- {/ D' P# l8 N" q4 _5 }! @
let max-trade-times 04 K* t8 g! h  {" Z1 L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 \: w7 [8 {+ a' J) x
let max-trade-money 0
) R( M, ]2 `" z: C9 B" G+ Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 J- o# F7 W9 q, ^0 `+ y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" C7 ]! N2 n0 _- P$ v- [. E7 ~

! W% e: @; c! O4 E% {1 R) l5 L

+ S3 X0 O) d5 Iget-global-proportion: g: z& L, R1 _9 m: Z* O9 ~
let trust-value, A  F0 z: v6 T! C" S: a
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)

3 A* e' D" }8 o: w/ pif(trust-value > trade-trust-value)
3 k0 L, _' e7 F+ c$ ^; J( k[set trust-ok true]# F- K" ~1 z& ]. B/ S8 |8 A
end
! F- O- C/ d/ b3 B3 D2 l5 F' r1 K# {- d
to get-global-proportion, u+ N: N1 H+ e  h) u. Z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 {4 Z9 e; I3 o/ {# f5 Y' {' g[set global-proportion 0]2 d: S; N) ^) f* N
[let i 0
) A( Z  h) R7 zlet sum-money 0% i( S! ^. @1 n  D7 }
while[ i < people]0 ^7 K0 f5 F: q" x9 z9 p# t
[' n  Z) V5 }8 g  v8 T3 g
if( length (item i2 x+ K' r/ z9 R* B
[trade-record-all] of customer) > 3 )
: |0 c8 `0 U0 p
[' f. D. |; z5 u, D5 s5 k' D* U& L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 }# S. p  s7 A]
- y( w6 v  e' S2 e: Z0 W, o. Z" Q8 m]/ g% G6 H5 n( m) M: q
let j 0
: U5 n$ q0 O# S! ^4 M$ Slet note 0! u0 y/ G* x. ^7 e
while[ j < people]1 _& L: l% Z, X- A0 p! H* ]
[6 F% x' G" z' N4 s* I4 J
if( length (item i$ i# D/ ]6 h5 R- X  J) x
[trade-record-all] of customer) > 3 )
$ C% V% x! k& H0 n4 m! x0 n
[
+ A; m' Y4 z5 W- R8 i; `2 a6 ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ S1 H' q1 H8 ?! I
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" o4 |% b2 @  |% ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 e* ]. [' B3 j7 D7 C]
! _; `7 E5 h. |; M]
% ~) f4 X- F$ U: _& Nset global-proportion note
3 t* a" U- c* {" x: i]  H. `' M0 |7 F* K) x7 {4 p
end
' n# T8 u  F" }- c! p1 S& ~+ T5 f" [2 C9 z4 @2 |$ m7 f
to do-trade
6 q' g/ C# E( Q7 a- b/ m" k9 x8 l& f;;
这个过程实际上是给双方作出评价的过程$ d) h* l- Y. p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: r- v5 x0 I/ O$ d6 h( |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' J/ d% N5 q1 B2 d  A  @- }set trade-record-current lput(timer) trade-record-current
& N# F: `/ W! w0 I9 h& v;;
评价时间
5 s; N4 L( v+ [* a/ A# bask myself [
* C4 z" P; R' R6 C" j9 Dupdate-local-reputation
# v6 J) J% _) L) k* `: Bset trade-record-current lput([local-reputation] of myself) trade-record-current
! F1 G- o! j6 ^2 q% z3 G]
" @% H" x0 H/ o" P# g; R8 ~/ Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ O! ]- m. ~) I7 L" c6 A
;;
将此次交易的记录加入到trade-record-one
* G: ^. C, Y' p; D" a+ Y1 Y5 }( iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ c3 X1 ~" l2 d0 L/ \let note (item 2 trade-record-current )2 T4 |9 d+ M& Q/ A: }8 [' |  ~$ E
set trade-record-current
4 h0 j5 ^, e/ L# F( M* R' |(replace-item 2 trade-record-current (item 3 trade-record-current))

+ E1 w7 k9 u6 B* w0 W( V2 M2 iset trade-record-current% w% r) c& o5 r
(replace-item 3 trade-record-current note)
' w4 u/ z& Y$ L$ @! G; @% x
, Y& ?1 G7 b- r
2 Q* k6 z& m. U. D' R+ J
ask customer [; r6 @4 W2 K9 V/ Y
update-local-reputation
/ W. W' [, C8 Q% Iset trade-record-current: I" Z0 W( M  ^0 J( Z4 ?) I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ d  k7 @, ?2 f" I( m" g]
" V! T* ?/ {  U7 ]. c
; a* `7 @" r0 u  \% X' o( x

. i7 [' \9 e" A/ b' `9 Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" U* x: w6 ?; i5 W0 l' O9 I
( ~' n1 H4 I3 J! I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), }2 i4 K' T& L
;;
将此次交易的记录加入到customertrade-record-all2 h+ \1 E, _! ^, ^
end
1 g6 _6 ^1 e" K6 R& a) U$ n
; `: v1 T; j8 x/ W4 Xto update-local-reputation( E4 x/ [, L# L/ R
set [trade-record-one-len] of myself length [trade-record-one] of myself! Y( g, j2 h# W/ F* o( p& ~* _
/ X5 i0 U& g! h3 g. n) y* X

: s0 h- T6 T5 A- U: ]" L/ S$ B;;if [trade-record-one-len] of myself > 3

! M6 V& R  G2 n3 E, mupdate-neighbor-total# E) a5 P6 H6 G, n, h" d% v6 H
;;
更新邻居节点的数目,在此进行$ @5 s: {8 E4 Q3 Z) c9 A' b
let i 31 h. N* A; \* ]0 `
let sum-time 0
! V9 ^2 Y+ y7 \while[i < [trade-record-one-len] of myself]
! K. `' n. r% g# \4 x7 e[1 L1 D* Z: S% p* k  F: _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* C1 h* {; t7 H
set i
: s$ s: A4 z4 H( i + 1)

3 ~* a% [2 g8 V1 l9 N+ Y/ []
7 ~2 S* F7 t& qlet j 3/ ~1 @; N4 U. I5 [! ]
let sum-money 0. m/ W" v3 h. U! }/ I
while[j < [trade-record-one-len] of myself]
4 ]+ ?0 @6 A9 _- u[
' c) _2 s: p: e- cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 `6 T9 W# Q, I7 P% ?
set j
; Y% L' d- F0 f. S( j + 1)

7 ?5 p! a3 ?3 M+ e5 x. X]' E- i' E5 b7 h3 I
let k 3
" _  ]6 `* V- ?+ U0 Zlet power 0* U# Q4 k% N. E1 C0 `1 {
let local 0
$ A' t3 Z* @2 O% H1 Q3 `while [k <[trade-record-one-len] of myself]0 J( g, p' E+ w* V4 W8 B
[
! ?+ Z( Y0 m2 U3 w% jset 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)
+ D8 k: K. J. H# W" n# e: Lset k (k + 1)  d; `  M8 _" e( Q& n* L* |
]
+ w" K! H; U! M; ]0 I/ r6 M& [set [local-reputation] of myself (local)
6 h( C; l) [" A* e7 \end
3 x) ?* N1 d: ~  ^) p# s# E: q( ^' ]- ~, J/ b$ Q
to update-neighbor-total
' D- X% K0 Z8 [& w* C6 L2 Q
+ i; ?  {1 c3 m9 Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 o' N$ }$ A& W$ C

: p2 J( \- n  J0 Y6 t1 Z0 q

; `" O, [' b  t: b6 x  Q, a7 s. Aend
. I$ {; L; m! @! G  E3 Y
2 W4 O+ J9 k  |2 s7 g! `to update-credibility-ijl 1 T/ n+ l2 t0 c  W8 e; _: ^
7 \+ O0 M, ~# f2 W8 U) w' U
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。, V6 {4 L. u  _7 A9 W4 Y" Y
let l 0
; ]& n+ }4 m1 h* x: Q* mwhile[ l < people ]
* A: f8 V2 J( K. M6 d;;
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0 ?- J" q) j: t7 f
[
* E( B3 X5 C, i0 V! t0 h: R0 h& zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* O; }  N9 A( Q* p7 a+ E) f- b0 B8 @if (trade-record-one-j-l-len > 3)! t* ~4 E8 X& M& P* d
[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# {- ~. ^6 b$ W* _( f$ w4 B4 u7 Z
let i 3
) C+ j- _9 T" _let sum-time 0  C2 ?7 U* ?1 m! s
while[i < trade-record-one-len]. _& ]( Y. ?3 a9 l8 @5 H& h8 G7 w( [
[
0 K) {# c3 v# [9 e" W7 ]: E8 r' `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 b$ ^, t& o$ ?; v. a. ~set i
0 d) C1 @* s$ i9 V$ L, h( i + 1)
. c* i2 j3 B! s" A  d' n
]
* O: j- a5 w( \2 Y9 ]5 u; n5 ^let credibility-i-j-l 0
, d) X" ?& U; K;;i
评价(jjl的评价)0 b1 a1 m/ P1 j2 `  j, X& m8 Q
let j 3! X0 x) I: w9 D* E! C7 Z
let k 4" f* o6 F9 y5 q$ r! c8 d: k
while[j < trade-record-one-len]% [- |* G/ j& m$ {# U
[
+ d6 ^+ L: U" K' }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
2 ^( M6 Q$ c5 {3 a4 X9 e6 Y& V3 u- Qset 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)
" p4 N# u" D: }2 O1 X( O$ x  kset j: m9 u$ F4 A! [3 ^/ c2 \- \  Q
( j + 1)
: p1 T# {. o# y  @" P+ J8 D
]
$ v8 E4 H4 v' D$ lset [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 ))2 x. B3 P5 k; X4 }* c
, |. M2 w* ]5 t& n- E, v3 U

+ b8 @. ^" A8 W! M6 ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 a9 o- f# T" Y* i1 V! \5 K  E$ z;;
及时更新il的评价质量的评价) `6 ~4 }1 U6 {5 [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# z; j+ Y5 P: aset l (l + 1)$ D: F( `- A4 g& m- ^% R
]
8 H: O8 }  Q. a. yend9 v% ^; A. z' ?2 _7 ?, t

: e3 p4 y( n* I. ~) @/ ito update-credibility-list
8 {, f% _& Z" C; q' d( ilet i 00 {! Q8 a7 F2 l0 o$ ~" ^
while[i < people]; E& E9 d3 P0 M% }  i) A
[" b0 G0 Y0 o& s) _7 v! K! O
let j 0! S; Q7 i5 T+ p* z
let note 0; c, N. E% C# s5 w3 \2 U, K
let k 0
4 N7 }6 }0 h3 N, N6 Z% m;;
计作出过评价的邻居节点的数目
1 j% |8 {! t' v" S+ @while[j < people]
2 j* @6 }$ W* m) ][; a/ k/ z, g, T0 S+ s" [) a' o9 \
if (item j( [credibility] of turtle (i + 1)) != -1)
- V  r' D0 I0 F;;
判断是否给本turtle的评价质量做出过评价的节点) a0 H) U" I* L. C. p9 V( n
[set note (note + item j ([credibility]of turtle (i + 1)))$ y& k! Q, ~/ y" w* s
;;*(exp (-(people - 2)))/(people - 2))]
6 ?: _! y3 E# C" W8 o* ]( M8 o1 @/ M$ _8 z
set k (k + 1)
: I- h/ l- a# h2 p]* o% T! {5 d. G' z3 E) v- G
set j (j + 1)
& j# D* e. n" o8 L( K( C]4 r" N0 I% R/ }
set note (note *(exp (- (1 / k)))/ k)
0 I0 @  h; t% H3 Xset credibility-list (replace-item i credibility-list note)) [$ A( X, P- n$ `2 w
set i (i + 1)/ \5 ]5 x, L; u3 e
]
9 a8 Y( a2 D, F5 l5 i( dend* h( F; O) Y" v/ {! L
0 ?; _" D% K5 u2 A
to update-global-reputation-list
& d) {6 H7 `7 A  s2 H- Q- h9 tlet j 0$ f. E; N3 j" s$ R$ x* X
while[j < people]( D* K" r7 U, h* \6 L1 C
[
9 H$ K0 {) a; |  G' f9 v8 Rlet new 0' n  n+ x$ y8 T% c0 a
;;
暂存新的一个全局声誉* ]% b+ |$ u# h. [% w/ e4 S) L
let i 0
- o3 T0 |+ M" F, f0 ]) S# {let sum-money 0
  d: K9 @& L. j' w) e& \, q/ w% Llet credibility-money 0
( e+ a0 M# l! I' Z: {5 `while [i < people]
' s7 J% t! g0 X" p; G& E& S[% M& U3 w" T6 ?! d- E6 V, o. e8 p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 m6 z0 A( G7 g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): V! ]9 A& M3 Y: U
set i (i + 1)" F: k5 s' G* W
]
* _. G; s7 D; elet k 0
5 O& L' @  j0 D" L7 A) [7 S9 tlet new1 05 U' ~7 @+ U" ]3 G: f  V8 V$ w* A
while [k < people]8 G, u% R- t& N% q# ]4 T. d) Q
[
! H5 L$ e4 V7 T7 C' {2 e( aset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
% a1 l' F1 N' p% xset k (k + 1)
5 b+ b8 f! Y: C5 K]$ [- ]/ S+ q1 N2 K  ~+ P8 N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   A! J* g4 E4 x' `- O5 \1 `* ^
set global-reputation-list (replace-item j global-reputation-list new)# {( o5 @) a. E5 o2 q* Q
set j (j + 1)
9 X- w* E7 r) N# n]
0 E9 w0 v9 {5 K  H  i  N, C4 Kend: u8 G" {2 D. S7 W+ A3 _1 F

9 ^4 @5 o+ y8 s/ q$ ]( u/ V6 `! z; H# K7 W. }

5 [0 ]+ F( \# h0 d1 j3 pto get-color0 L9 X) B' S" I. c: h

; {4 C" v7 P4 K! z" w0 Tset color blue

; P# ^$ v) \( H- y5 Tend8 @. ^  P* m( s% F+ [

& Y- O8 `& ]6 A. `- ~to poll-class
) F8 p: C) ^6 U1 q* K* i: ~end
( _# l% k& v! J8 Y+ S9 R
* {( `6 R! H4 l* c- G2 mto setup-plot1
$ O7 c, V) ], {7 s5 m; X6 F. f4 K0 D" @! r
set-current-plot "Trends-of-Local-reputation"

( y" _+ t  U3 X7 Y. r
: M0 C0 F/ s; @, jset-plot-x-range 0 xmax
$ F+ S% j7 ^5 k2 `3 I
! u1 {- J1 J9 B& y. [2 \9 R
set-plot-y-range 0.0 ymax

& Q" I' m1 t2 ]end
) P' Y0 P% l7 k
- h  v$ Z  W9 }8 `; xto setup-plot2
* p9 u% I( G- s/ x  \% X' c  m3 W* r
8 C: i& y; f8 g) ]% J2 Kset-current-plot "Trends-of-global-reputation"

" I: ]) Y6 [( ~; c6 ^% s
5 c4 W# y5 b# z1 g7 V5 A; i2 h' Zset-plot-x-range 0 xmax

- S) |! W! z* q% B) U9 C
* k- R* `2 L6 I5 o. Dset-plot-y-range 0.0 ymax
3 Q5 }6 {, z2 b
end! r" n. k8 k' n% @+ o5 N. ^

& M, q0 `7 R; p* k- kto setup-plot3
* X# R+ b5 X" ~6 Z( N$ j' L' p; k" \" h1 ^# \
set-current-plot "Trends-of-credibility"
  h: |. O: o& k0 K6 C
( A8 o  p9 I& c5 n
set-plot-x-range 0 xmax
: A1 {; N! d$ U8 c5 H1 l2 p7 J

. k3 U1 ]# Z0 B( _! {set-plot-y-range 0.0 ymax

) U! @" h( @! Z) _6 Q* L/ vend
) z8 ?( a, F  Q: v3 q% n
- Y0 c* m+ b5 q: E) H( X) ito do-plots# F1 \5 k) `: `7 `
set-current-plot "Trends-of-Local-reputation"
+ i; M6 }: O" P. ^7 q7 U$ |% Y. Cset-current-plot-pen "Honest service"
+ x+ a- i/ C! A$ M# A3 Z" mend
: S4 b) B% P+ b! H' ~, O& B
! _& A& A/ g$ @[ 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.. J1 M; S9 a8 Z# t4 v& t' v+ k; k
# S/ Z) D, I) A$ ^
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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