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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:# ]; L  Q4 [/ S1 O! w
to do-business
9 M  e- z( [8 R& C rt random 360( z6 E' z( E( x! U5 x$ X- @& I
fd 10 G  b" O! |* @; ~
ifelse(other turtles-here != nobody)[) t" |6 y5 i- @3 ]$ K# E
   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.. x) K* L& i3 r& t
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : {( [  N  ]; {  m% Y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# I! m' z* w* l" h7 e
   set [trade-record-one-len] of self length [trade-record-one] of self& ], ?# b; M  m, N* R
   set trade-record-current( list (timer) (random money-upper-limit))5 R+ v0 C0 s) @9 n. ^
4 V( P4 q+ p1 u' d% c
问题的提示如下:
+ ^, E4 |* a* y& A! R5 l+ Y, ?# l! [$ U) [: H8 N/ o) v* n, ^$ ~. m" p
error while turtle 50 running OF in procedure DO-BUSINESS9 z- L( M) ?! W5 X$ |; H( j: L( y  z
  called by procedure GO
( g( L8 r/ u3 L3 Q# r$ DOF expected input to be a turtle agentset or turtle but got NOBODY instead., v( A4 C) r8 ~( ]( D
(halted running of go)
" `/ |; y. [- j, J( G  Q$ r# P  K* t- 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~~
" f! E! r( P: q5 r/ C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& N2 B4 x) q" T# [/ T% y1 y& n* T
globals[
, P7 P4 |+ G& s2 A2 ?xmax1 d; e0 u. h- X! R2 [
ymax6 u9 s2 V' d% k, D9 N+ p* d
global-reputation-list
( v" B; C7 X$ b8 I; q( n/ F, W7 {- q( s7 M6 B0 \. w
;;
每一个turtle的全局声誉都存在此LIST+ g7 Y+ [! ~. L0 {
credibility-list4 M( |5 o( r" Z' ?  Q- S
;;
每一个turtle的评价可信度! m) _3 q+ h' b$ m2 z! y! E" y
honest-service
. ]$ }) o: ?; {9 n# \" ounhonest-service
; D' A# K$ Y1 W, M# z9 Joscillation
. H; Z  s; m) {& |4 t% Trand-dynamic% S& Z/ S- j' B3 ^; Z
]
5 ^1 r: x) `/ m7 h  G7 R/ t9 w! I9 z# N7 E8 R, E' V- l
turtles-own[) ~" ^. k. j. b# p6 M. Y
trade-record-all
9 `( @4 D. O2 h; N2 H  ];;a list of lists,
trade-record-one组成6 f" h0 l. i6 z3 M; H5 r# s
trade-record-one5 [) a( }- c8 w$ ]5 B
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 z/ h8 N( B& ~% Y

, E; t5 |! I( {+ c4 O3 T5 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]]
" n- y2 C8 m4 ?/ j; }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]. m) O( `! `: t) ?* B
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
5 h- y- y9 j7 V  wneighbor-total
7 E9 y8 {- {; O, n;;
记录该turtle的邻居节点的数目& g+ \. ?9 R8 E
trade-time
9 M+ M1 L/ O/ c# ~; Q' H, z6 h5 h;;
当前发生交易的turtle的交易时间
8 r0 b8 _  O$ {- r0 _appraise-give
4 g3 [: u  F$ L4 p9 W;;
当前发生交易时给出的评价- u5 M1 h1 v% D# g9 @0 u7 H
appraise-receive
0 |. l8 }! g6 G9 t) ]+ q" x;;
当前发生交易时收到的评价4 R- ]" m' N3 Q" ~# f7 E
appraise-time* U% n( R+ |2 _  Z- R  B6 k
;;
当前发生交易时的评价时间
, D* |% T$ g3 u: D7 |0 U6 Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 }* C5 ]. v3 ]+ h, m% {
trade-times-total5 d3 K7 V# R" c* ^, S( T) J
;;
与当前turtle的交易总次数" n' ?+ r/ Q& q1 J
trade-money-total* a  o' H# v6 ]/ E( V
;;
与当前turtle的交易总金额. `% q6 X, f2 K, k
local-reputation
* ]9 [' F% \: l' h: gglobal-reputation
9 S$ C; Y# S# x5 k5 C, [credibility! M% f6 v: O% H$ f( P$ X
;;
评价可信度,每次交易后都需要更新
9 k9 R; R: i  P! Bcredibility-all
4 y0 ?# u% f6 W& t; w, ?9 f;;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% |. ~- ^1 h4 I2 H7 ?+ U( y
$ I9 V/ C: e' x8 |
;;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
$ T9 }4 @$ G% B8 M$ lcredibility-one
1 ]$ p* T, @- Q! ?2 c! m;;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! D; A( W, d, ?* e4 I& ?3 x
global-proportion+ B6 |7 }) E. f" V8 ?
customer
$ G7 k2 l: _$ W/ m" v9 Tcustomer-no) p% x, |; H: g9 A6 G4 O7 y
trust-ok
3 L) `1 A2 q* P4 l  z4 y# btrade-record-one-len;;trade-record-one的长度+ \& Y, Z) Q. w3 c* o! n
]
- h1 c5 b, k# Q/ `9 b) P- y9 K$ o& V8 K& f7 Y
;;setup procedure
" P" M- L! }6 u4 {. `; W6 Y, x* C
to setup
- t" Q5 n4 F: E! R  o, V- i& W, M5 Y# }8 S
ca
3 J# @" K, R+ ]
4 O* _- M) M, f1 f# K5 t  s
initialize-settings
4 ^: M! v4 \7 X- `' T) ]; F
& h4 @5 G* D1 M, L
crt people [setup-turtles]

& ]' p5 R1 k% `: Y( V( B! a; \. K1 _
reset-timer

' F9 X! z4 O) _! O3 A$ b6 u
2 U3 Z0 Y* p% z" c0 Hpoll-class
6 q; Z+ a0 a# \. R) O; x

- V5 a+ V- W$ z- a2 H1 Xsetup-plots

& K) t# J# w/ g( s# b+ {: W( G) p% ?  }# y8 @1 m( q
do-plots
1 u& ^5 ~- I% N# s5 d1 t( q
end) \) z3 L0 Z5 u
/ w) U8 o4 e! {8 G- z8 L4 x6 |
to initialize-settings
' r6 C& w  G' I! l& U9 {
" n$ d, j/ D9 F' ^: u- u& nset global-reputation-list []
+ |% `# P6 R" m: J+ \& o* y1 R
7 y* |  ^' u) F
set credibility-list n-values people [0.5]

1 h9 J: f- ], i: g1 y6 \* ~, r# L) f' q; E2 |8 \, [- _# G0 m
set honest-service 0
' M6 V" W* p/ E) \+ b9 K

) }) |: @. k! |4 W( K0 d% I& U% lset unhonest-service 0

' a. H( S" p. @+ e7 r$ N) X
( R- F: H# E3 H3 j6 k, e! Uset oscillation 0
( z# b! e; Q  R0 j# ~' S3 L- p, m
2 Z7 d2 J1 ]! |* P: o0 _: X8 y  L
set rand-dynamic 0

" B  d9 j, M( O6 J7 s1 [end6 K% W9 m  r7 [; A  R# A' W

4 O& n5 Z/ _1 H; M; b1 ^+ c  eto setup-turtles : M5 ?9 L' i8 F3 Z/ W
set shape "person"
+ C$ J3 z% K2 ]9 q# o! G6 dsetxy random-xcor random-ycor
' O+ f% ]  b4 s; K, oset trade-record-one []5 ]8 v7 o: u! t$ }! y2 G; I5 X
( O" |/ t6 y9 i+ X
set trade-record-all n-values people [(list (? + 1) 0 0)] ) {5 t1 C4 a6 ^# E) m

* ^$ E4 n4 L& e0 a$ V$ X9 h  Qset trade-record-current []! u8 B" D, ~% M
set credibility-receive []1 {9 o) D9 z) c- x/ s2 F) o
set local-reputation 0.5. A9 ]: a6 {" @/ n1 K/ F7 v4 t4 R
set neighbor-total 0
! R" _  L. t/ h5 K! y4 ^& h2 o7 uset trade-times-total 0. ~: h2 G! u. Z$ ]
set trade-money-total 08 W, g( ^$ H! \% A" J/ j
set customer nobody
) |8 ~; t$ t; j1 s" I  Pset credibility-all n-values people [creat-credibility]" q4 U" `; c$ s8 p2 k) z  s2 k
set credibility n-values people [-1]
/ B- {6 `0 e: d9 K" W& l+ X' S$ Wget-color
( a9 i* \' |1 V7 O* p7 Z" w8 N6 q+ f
- m7 J4 O: a% Z7 Q% |$ r5 U
end
' G7 K1 [/ R# {- p  \, _3 I0 r& J2 p$ V7 ~# Y' p" ^! q% q
to-report creat-credibility
) M; e7 ^6 E, u+ z/ j# j' Breport n-values people [0.5]0 Q1 k4 V6 l5 z* {7 u% N% K
end
/ [! z7 y+ ]) Q' x5 o( Q1 i$ U. J1 g
to setup-plots
8 R4 @' x3 ]+ v
& j2 \" C  c: |- i" kset xmax 30

. n4 Q' Z  j# T! O$ x/ n2 b* o: U/ i5 G% R
set ymax 1.0
$ p$ N  U, p8 c- I2 M

7 i7 o8 c- a. k# B6 Uclear-all-plots

3 Y- J3 ]( o- E& X( u0 D% }. Q& l* s! Z* Z( o" b
setup-plot1

1 z5 u3 p6 b# g# Y3 n/ E& Q, Y& z- f- q% Y3 \. i# U
setup-plot2

5 `; n( r) O; T3 D( {" g2 J' g' p7 j) g) U- D! `/ A
setup-plot3
# i5 C( p# y) b* |& o9 ]! R
end
7 j- S# ~; W! A
# B  I: f$ g# u% I$ a;;run time procedures
8 U2 P* G6 f0 l+ p  |2 B3 N3 S8 h* |* T- Z- F! T% }2 }
to go
3 l7 }" M" p4 r7 x6 w$ g
8 g% p: K3 C; i4 \8 M2 e. Uask turtles [do-business]
$ C$ c! \( H* k7 N
end
  L7 w1 q7 W+ P/ W1 E8 D% m" e8 l$ w" ]+ a4 ?4 R
to do-business
$ H/ V: b1 E* Z/ r% I
. q2 J1 Q- x; [, O
6 |+ S: j2 k% {. q$ B
rt random 360
9 L3 d; \/ ?6 }0 ?

& y& t. o5 j2 p% v, b* g4 `fd 1

( v; h. `: _/ k! P2 z; b0 R: V, S( }* D8 t1 Y
ifelse(other turtles-here != nobody)[
4 `# T. l/ L' T+ x! g2 h

- R" Y$ [) f- T: H- b) Yset customer one-of other turtles-here

" M. }0 J! l3 `) [/ x8 E4 H# C8 U' L9 ?4 ?$ a6 a% O3 N# r. O
;; set [customer] of customer myself

. p# c! ~. l3 v' g
8 m9 M# t6 d5 E* u& v4 oset [trade-record-one] of self item (([who] of customer) - 1)( |- t( d4 C) F$ s( h' z3 O9 p! p6 E
[trade-record-all]of self, ~+ @6 W" X$ j" m% t2 v) Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' r- Y$ L4 H# w2 g0 Y+ w, s
( \+ o* U. Z! P+ j" ?& }( j4 B  sset [trade-record-one] of customer item (([who] of self) - 1)
" P5 _, i2 E/ z; P0 E  p[trade-record-all]of customer
$ ^4 k1 a' `/ b

* o' E  `/ z+ W' mset [trade-record-one-len] of self length [trade-record-one] of self
5 w: Y8 J3 `1 C5 j: k
7 O6 ^2 U9 H/ a- ]0 }5 l( ?+ u
set trade-record-current( list (timer) (random money-upper-limit))

7 ?$ C, _. T5 G& _: }2 t0 k1 F4 T: S* l2 }  l; M2 {( [; j+ e
ask self [do-trust]
+ R1 f% O' r7 i" L2 f- ?1 {% @;;
先求ij的信任度
9 q7 M0 C+ {6 n" t
" B- c2 }+ u5 Q6 eif ([trust-ok] of self)
" x# g) e$ E  y' {4 u- V;;
根据ij的信任度来决定是否与j进行交易[1 e4 U& B& @, R/ c) Y+ c
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# z- Q7 T7 t4 l9 o4 g& a

, f5 a4 r& j+ z. ^3 H- p[
( ^  ]' `. H- q! s% h9 G& x
5 D; g% }% }' |: N/ T
do-trade

  c8 |  h& R! f+ z2 W6 P
8 |" f' I/ U2 Q5 h, |5 v$ }update-credibility-ijl
" p/ `+ \3 F4 [. p( R
0 r- Z, p  ]6 ^; L2 Z/ s& z7 t6 t
update-credibility-list  G  X% W- h1 f$ C' ~: W6 i1 @6 v1 k
+ p. \6 R0 W2 C/ q9 g

8 q+ e2 I" _/ Q5 ^& ~7 S3 W/ [% Xupdate-global-reputation-list

7 n; C  ^& H) t3 K
; i% Y. [6 Y- j  Lpoll-class

* L1 z9 h+ D$ _) s% L( B+ \$ u1 g7 G' [7 \
get-color
0 v. U0 C' }* b
7 f2 z" C* ~1 P, _/ j3 b0 H" M2 T4 C1 g
]]
" M0 i- B) D: f; R) @( I$ U/ N) G' m$ G9 N4 p
;;
如果所得的信任度满足条件,则进行交易1 u- F9 m5 B- x# N- K& }
8 Y0 d2 L- T) f4 s
[
" i' Z3 c, s- i
3 B' }7 S; F/ S6 p5 e* s9 n
rt random 360
3 g5 _' S6 M* ^! k6 @: w8 d* }4 }. @

* u  i4 y3 Z& O: }1 q+ Z% mfd 1
, v; u0 U8 C: ~) N7 ^; f

- S- o6 G1 n) X9 @. v7 F3 []

/ g( x. H0 a0 `+ _- N$ i0 O
# w( \% m. x! @4 ^5 pend

, [  K# S. x. B& o9 J
1 w' A" s' M& t% j$ }- L8 R/ {to do-trust
) n, A& z7 c+ t, {set trust-ok False0 G, {. B7 z0 x! o4 R3 H. E! P! y

3 P& \$ K& p; K% |! r% Y
4 t4 Y5 S3 G% i1 \) M5 ?
let max-trade-times 00 H4 W  e8 p9 N( X1 D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 u0 a' U6 l" i- i% _let max-trade-money 0) z5 h& F: e# H5 Z3 i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, `& L. r* l( D& p! xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), Z5 c5 G, C' s, t. M4 V$ d( Z

$ |, P' Q$ F) }$ a& a8 b
) s# O  S% H! C6 Z. I7 `7 v* |
get-global-proportion( X4 @. l  X/ m  S! o+ `
let trust-value
% l- L- `1 Q1 X, U& Flocal-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 H! n8 x$ |; ^! X& G0 s: A# j
if(trust-value > trade-trust-value). w1 V* k: [( O) Y3 m1 O- U8 e
[set trust-ok true]% o- t6 k. l/ U  [
end
/ s1 u) z: {# w. h% j1 Q7 l4 D5 ]+ V7 g( ^+ {5 V
to get-global-proportion
4 _0 J! S; P: u% difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  ~& p0 k; Q8 }/ I[set global-proportion 0]
9 `9 A4 B& E/ E/ |0 d9 o# o[let i 0' |5 |: t% F' q
let sum-money 0
; }3 c) }& L" c& L* C+ Bwhile[ i < people]0 F* B% G) b# ?6 \% e
[
5 S" N# I7 [- e+ Q3 P+ O: K8 xif( length (item i/ r$ ^6 @" D/ I( m0 H
[trade-record-all] of customer) > 3 )
7 R" O% m4 T: t3 D* F
[
! }- e0 z: Y# f, l! V$ }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 t( P% y# c7 I5 V: [% f
]; @3 w9 Q2 P# \6 W1 s
]
) _2 Z, s2 a( B; v) u% @9 ulet j 02 `. S: M& I" U) W) ^7 y2 Y, w5 B
let note 0
, w' K6 n; d. Ewhile[ j < people]
  h1 z; r3 F" p[
* j" }* Q6 g5 E0 O3 N# \3 F$ R" ]6 |if( length (item i
  |! K% e4 C+ n' g[trade-record-all] of customer) > 3 )

0 a3 v7 d0 K! }' ~9 Z$ r$ ^  ?  r2 h( x[
0 j; }+ B" N2 t, C6 Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 Z. A" v; n+ R/ t( m7 C$ s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* A; {" a7 |9 @2 L! _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% Z* Q; C* U5 l4 T. Z]
9 c6 \  v0 R6 `4 t]+ N/ W0 ?  W. y" d
set global-proportion note
" r& {/ t; K  E) [4 a- d]6 s. P$ h. [' n+ q  b
end
$ h% A, r( X% X. t* q  }, r% T. j- O" Y1 s' Z0 A
to do-trade
5 x- x! r" W# s$ N% V  @" `;;
这个过程实际上是给双方作出评价的过程8 O1 @8 ?2 d1 i- {* Q4 U" q5 Y( q7 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' r4 J1 b1 S) z% h9 a7 w$ _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  h7 G/ [" q6 p3 s8 T  k. q
set trade-record-current lput(timer) trade-record-current1 U! h, ~$ U" ?5 q
;;
评价时间! l2 k/ p2 P: f$ ]5 l
ask myself [
- _4 Z, c! Q% aupdate-local-reputation
, I, p8 ]8 C2 |* G  f" e! eset trade-record-current lput([local-reputation] of myself) trade-record-current, q: ^- A  Z; N; d  @9 f  w( O- g
]# I4 V. u+ G: ?/ e  d/ A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ u7 A+ G! l, ^% K;;
将此次交易的记录加入到trade-record-one' @, k9 p! m' y; _6 O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, E6 B  N4 _/ z/ b; u6 Wlet note (item 2 trade-record-current )$ Q3 E0 |- r+ _) s
set trade-record-current/ C+ ?" Z6 I7 [( B$ l2 D( c
(replace-item 2 trade-record-current (item 3 trade-record-current))

7 \+ {0 v1 u& P" l3 xset trade-record-current
. h* I  D0 J. t9 A1 `4 c6 d* t(replace-item 3 trade-record-current note)2 M2 d9 n9 c2 Y0 I+ n
- w$ [2 H3 }- d5 [. _5 m$ f

. \( L) u# G+ P# e1 k2 v/ w. Oask customer [9 z3 A+ ~5 Q' P' e0 L) H
update-local-reputation5 p3 c$ Y& E7 M: ?: I' r" I) J: X
set trade-record-current# ]2 s3 H9 e4 U1 S: E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: y1 x3 W$ E3 U6 X. e- Q# Y, I
]  G' m5 L/ l6 }/ r

: @' P" D( L& @) o. L- O2 D8 j: t
# u# K" g. I# E. b/ P7 {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! k  N3 F% z8 T
9 K* @6 b% F. [* ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 s+ F0 ~- ^' i9 I4 };;
将此次交易的记录加入到customertrade-record-all
* J# Q5 s9 X$ O& f8 n6 Tend
  M  ?  t' R& C1 J
' A, P/ a" l; e5 z# @5 e, dto update-local-reputation/ H7 V5 Z" K' k
set [trade-record-one-len] of myself length [trade-record-one] of myself7 ^$ Z+ s, }" W$ R, M  b( ?

- X5 Y) u4 N1 A8 W# _3 v) A# R: G# @! W8 m: z6 `7 m
;;if [trade-record-one-len] of myself > 3

) d0 M" s; s  cupdate-neighbor-total% z$ P* T% H) S) h
;;
更新邻居节点的数目,在此进行0 J4 a% m( [5 a6 x7 T, M
let i 3
) f9 `. o9 O/ q" V5 r6 }- g2 d* klet sum-time 06 t, O+ i) s. }; o
while[i < [trade-record-one-len] of myself]& ?+ Q  C6 [6 m2 [" ^% ?) n
[7 ]4 s! z! g6 ]6 N% i+ P  H( d
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ ^2 L% T" d% U, b8 N* {5 s
set i; K2 M  Z4 e0 Z
( i + 1)

. C4 F% v4 q& _* f: ~]+ J2 {' o8 ?  Z& F  P7 {! x
let j 3& w! Q1 A! C) o. k+ c
let sum-money 08 @6 r1 H! A: x0 O* }. \6 F
while[j < [trade-record-one-len] of myself]
% t6 k+ u) Z7 U& c/ ^[; S% T9 o% @+ Y2 C1 g3 c; N
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)' e( T* G( {6 X6 m+ g
set j/ a/ D) {; x# }0 x
( j + 1)
# ]6 M) U. B+ E$ E4 A  |
]
8 ~* b8 V; ]  M  L1 S* clet k 3: i. P/ Y9 b% D. V" u- Z6 n+ w
let power 0
# A( S% F6 a8 Y( J9 A2 ~2 Clet local 0
+ H" d9 K  I2 F- R& pwhile [k <[trade-record-one-len] of myself]
; c5 m* B8 K) E4 [) y5 L2 \- Q0 _[% ~3 W, l, p- k0 E/ w
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)   f9 L) o0 D0 }3 L
set k (k + 1)
( W- p0 u; X) c8 O/ K; {]
7 U4 S; ]# J" B1 ]set [local-reputation] of myself (local): u: ~! ]- _3 [' [0 J* n; G
end
0 q) k1 H; q6 `# r  |% I9 b/ \8 E' y8 `2 y6 A* |% v, N
to update-neighbor-total
7 d2 C1 f2 L$ x# \0 ?
; C4 E4 N( ?8 w% x- n0 pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( X- |; w! L5 E# {- _" D+ O
0 t1 D. j3 u7 h5 z7 U
  x, o% D/ m( H
end
+ ]- l5 l/ h, D  `$ J! l2 ], _6 z0 N1 ^) T- K
to update-credibility-ijl ' |2 A' q7 e: F
7 _  S) b+ m% g. z* G
;;
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 X6 k$ N- ^& [
let l 0
2 ~' C- a" h1 T/ h+ Y- T$ ~8 p! vwhile[ l < people ]8 f) x8 n, U. l7 ~4 `4 r& c! |
;;
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
4 {( s2 ^" H$ P1 U$ u[: D# H' J, G4 T6 |4 N3 p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# T0 N! ^4 K1 M( D* x" q  |* q# X
if (trade-record-one-j-l-len > 3)
- W4 U& U4 h! i, o3 {% ^[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$ j" N) R  O- a5 _9 }% m& @9 {
let i 3
$ _  M. P6 L( f! z) t$ f3 {let sum-time 0  g" f- ~# ^9 u
while[i < trade-record-one-len]& y; z; Z$ i7 T1 `3 C* [+ g
[
" h, p( J' e6 l/ Q# b; lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" E3 k, E1 C5 V3 m
set i3 U! {+ z- z3 u5 }4 n# m; I
( i + 1)

, M  j: J5 q1 g+ c6 r. i! q) W! ?]3 t- x) U* M! M! [7 @
let credibility-i-j-l 0
6 m& \7 ^; e9 _5 F+ R) Y1 _7 H;;i
评价(jjl的评价)( Q* F" q* g8 \  k
let j 33 c0 A, Z/ p% z+ ?% r
let k 4! g8 b( L. z2 U
while[j < trade-record-one-len]) C. g) W# L6 H0 a3 p2 s' M
[6 m* H  ^5 v; a
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$ s  Z1 v" p- h) N8 ~7 i* J9 ~
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)
3 _0 x  ]( E( @  I; c) zset j
7 M/ m2 H# A' [2 `' ~( j + 1)
. ?! E" J, M9 P& B
]) N; O/ b% U* {- E
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 ))! h8 d! Z! ?' E+ }! `
! c. {1 M" y! S9 `5 K0 h
% |: G# F4 N* W4 I$ r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  G, t5 J3 M: E- W+ Q9 z;;
及时更新il的评价质量的评价
1 T& v0 ^- ^1 fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& @9 @; \* S" w+ d! Q0 R  g: m  }  Nset l (l + 1)% F% d! T$ U, W& G  m* j" r' t
]
/ s9 T' \8 r1 u' j4 Bend
7 |# P$ K' \% o  q  M' W3 I9 x2 L8 ~' t$ {
to update-credibility-list
& b7 d" ]" F8 Vlet i 08 K+ I" Z( [# o/ k' ?/ I+ L
while[i < people]' O! E2 K" J" a8 w
[5 o# n3 O; O2 G* ^5 o7 n
let j 0+ B6 b5 I4 c" q9 U# J
let note 06 ]0 d3 O+ t6 y7 E* Y+ V0 B5 o
let k 0$ R4 t, \' D! P7 P9 w/ H
;;
计作出过评价的邻居节点的数目- i# I3 m/ I8 e  p, B8 F5 h
while[j < people]
. C" K6 v4 R+ M& X[" X& m# ?6 ?2 x, z( J
if (item j( [credibility] of turtle (i + 1)) != -1)+ D5 W& Y* {) x& g3 P" G6 n
;;
判断是否给本turtle的评价质量做出过评价的节点
; M. d  z# P. I1 e[set note (note + item j ([credibility]of turtle (i + 1)))( ^  z- A5 n% [# _+ ?
;;*(exp (-(people - 2)))/(people - 2))]

& O4 W/ z$ F& f$ U2 o3 u- Gset k (k + 1)
8 G) T: Z4 ^+ o9 p9 M]5 d8 m- G, g! e% q) b
set j (j + 1)
! S" ]$ l' h( \9 }+ H# }9 d4 ~* Z6 `/ K]
) L0 j  L, r3 I7 W; K! V% x1 W. uset note (note *(exp (- (1 / k)))/ k); [/ J. V; \. F" l5 i. q
set credibility-list (replace-item i credibility-list note)
; m- O$ I  Y# x0 X5 O8 Eset i (i + 1)- ~8 P- I( d7 @
]
7 G2 v9 L0 _4 H4 p1 Oend
2 w4 M- H: g, G# W4 H; p
- ^8 r# r6 A# Z- Q5 F" tto update-global-reputation-list
2 a2 Q$ i  N# V4 t7 llet j 0
! x& i5 w* w) @+ ]9 S; Twhile[j < people]
. D! x9 o: h' S4 ^  g9 @8 F  k[
; `" E0 O, a& I* M% P- C8 L3 klet new 0
4 V9 @9 w7 N" I;;
暂存新的一个全局声誉
' f* Y: W+ _8 o- x/ dlet i 0* e3 S- Z* B5 p* J; M0 G* T, X
let sum-money 0- }- X. j: t# f" W; Z
let credibility-money 0
1 p/ z1 C3 N0 G1 F1 h/ Ewhile [i < people]: t7 l! y; m* _* ?/ }
[4 F8 O1 c/ B7 W* u; A2 [. D9 N: G5 J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# ~/ h3 z* F4 W3 K2 c, s* Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) t  h: E1 ]" T0 t+ w" g6 R
set i (i + 1)% w2 @3 v5 ^$ B* N0 m) ~
]& d. ^7 P" p. U( f3 n8 M
let k 08 i7 L9 ^6 Q/ ?+ F
let new1 0
! b. r( c/ |  P& Q6 Twhile [k < people], b- e; `4 }8 ?7 V1 d
[+ G: b8 z! c9 i6 T. \4 E& G5 v
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)
8 G4 N& w+ I/ {4 m6 E& |set k (k + 1)
  |4 N' L3 p  c  E]
: a' K- l4 F2 w( W* q. z0 \4 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 A1 R! L& g7 U, K9 @  Sset global-reputation-list (replace-item j global-reputation-list new)( i; [4 ^6 u- ?
set j (j + 1)
+ h" e$ r: e7 G: I) \8 o7 m: e5 y, b]
5 h) I. o& G: u& e  L3 Hend, C- h8 c" r7 z5 d# H

; `  o+ u: v' Q$ S+ b  x, A" s+ s; o
* n2 ]3 J% R3 ~8 j! n0 j9 y
0 ~5 {' u8 I: G0 {to get-color" p0 `; {6 C: ]% k
# A( c! p$ F' a% h( A
set color blue

; m' C& b3 ^0 X3 V, l8 u9 D5 Oend1 a$ E9 x& u! B2 d- S4 b. ]( ]7 P
0 x4 ^) ?' C* l# Z5 P+ Z
to poll-class
- c+ G! e% e! E/ |4 x: Eend
( d7 `) P- C6 {) R4 n  W. z
# D1 p+ ], r* Cto setup-plot1
8 R4 P; e% `6 d; }1 }) I# l; w, J% }: z/ H5 K/ e
set-current-plot "Trends-of-Local-reputation"
8 D+ N, q5 e* x/ s4 g) f
4 \1 j5 V. Z( Z2 s
set-plot-x-range 0 xmax

$ f( P6 {5 J; u' V. [( I8 m! [1 P5 N9 [9 f1 U0 Z7 }0 u
set-plot-y-range 0.0 ymax
1 S+ S6 _4 s: }
end+ `! w; c6 K% B/ I! o
# W- |- |7 m) a0 k- _
to setup-plot2* A+ g: L8 D7 k& O& P7 _/ O% s

6 m! \, T! u9 O* `( a9 r0 ]0 Bset-current-plot "Trends-of-global-reputation"
* B4 G0 `' r1 N
& s! m& d4 d/ h: `; ]" p0 Q
set-plot-x-range 0 xmax
; B. W" w* j+ y+ [1 J

, Q, l4 r& K: d/ Aset-plot-y-range 0.0 ymax

( A) e( q, O" v- @end( z% R! W/ H! N$ e, o6 R& ~

' m3 Z4 m& q6 x( Z. A5 u- Yto setup-plot3
: S6 d6 H5 a' A" n
4 u  k/ K5 j7 N' E" p  U/ yset-current-plot "Trends-of-credibility"
0 B  I7 ^' S6 D% f: D7 h* C
, ~5 ?/ I5 K  w
set-plot-x-range 0 xmax

+ I& n( Y, U& {+ c) z; c* Z6 d- S( A3 \8 m# s
set-plot-y-range 0.0 ymax
2 y$ ?! J) t% A
end! W; B9 w5 Y' q) x- K* k0 H" c

4 N5 i1 [7 l3 P1 X4 ~1 ]to do-plots. x% ?' |4 J9 J: U6 z! G
set-current-plot "Trends-of-Local-reputation"4 U  k; U* g9 Z9 C' N* }
set-current-plot-pen "Honest service"
7 Y) G+ p. T# k; H6 wend1 n* ^  ]# X* r+ \4 U" e/ X& t! J& i

: G( n' n- N$ x7 y  Y[ 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.6 B8 a+ y: A5 @' l1 Y

& g0 e: ~5 A$ ]$ f5 w* n, h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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