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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 C- R0 ~" f4 n! x. E7 \
to do-business
* E2 Q9 F( |, L rt random 360! l. Y$ M# _  Y8 y
fd 11 ]9 g  o& i/ n0 c; s
ifelse(other turtles-here != nobody)[
  ?) N1 O. B; q# p5 `6 f   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.
/ a" A8 r0 {( ~: b7 W- e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- o6 n& L3 b- B; @   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) e  V% t# u( b* I4 {  M# W1 Y% u( ]
   set [trade-record-one-len] of self length [trade-record-one] of self
: Z; I6 {# z" [  O   set trade-record-current( list (timer) (random money-upper-limit))' _0 R. o: c, b. A
' ~5 l. G: \4 Q; k
问题的提示如下:7 i5 A0 ?1 K* t' I- A

, h: t8 F0 b9 j) p- Kerror while turtle 50 running OF in procedure DO-BUSINESS- v- }' Y6 t1 n* X, t: j3 f( N5 r
  called by procedure GO
# z) r' T) C  O7 |OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 H. X6 o: M3 W' P/ b
(halted running of go)
( j' ^4 N' K7 v& N9 A: Y3 J; K# L1 {; i) G* A
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~~2 x4 Z7 q8 K/ A
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
. ^( S8 i0 n. M! P, j. e1 Gglobals[( J) K3 ~" n+ y- U6 x
xmax
+ ?, O  h& a. y0 C& @  Kymax
; f' a% Z: @# j& }+ gglobal-reputation-list; m8 L! `: x* b9 g, a
  R. l6 ?2 ~/ K
;;
每一个turtle的全局声誉都存在此LIST
  V* E: j& U/ u5 R- p' gcredibility-list3 p$ p$ I1 U( w' A; D9 G( `( L9 E! n
;;
每一个turtle的评价可信度) T1 _7 H2 q1 M0 T2 h
honest-service
: {. q! t5 [% f2 munhonest-service
5 M- M* |7 u# joscillation, y5 j6 Q3 [2 i% X  z2 k
rand-dynamic2 n: d$ D# a3 @. d- b: P4 Z
]  c8 c9 I" V9 a  }0 c- C3 t' J

" y& \, ^4 i. jturtles-own[
+ g  I# z% J+ f% I1 p$ A; K" itrade-record-all4 r7 h( A& x2 D' J# K/ Y  j. m
;;a list of lists,
trade-record-one组成
3 ?. H- g8 e4 Z- n/ d" v5 etrade-record-one
9 V9 A0 Q9 \1 x, [  @% v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( d' J1 P. h( v: W- ?' f3 O

/ e% g4 f& n# H6 };;[
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]]# B9 j8 ?! w9 r) x$ 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]
8 ?: r4 f' \' c+ z. ?" l) acredibility-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
0 O2 r# d( f  Y7 ^* ]neighbor-total
2 a5 J+ \# t8 g* w;;
记录该turtle的邻居节点的数目
* @+ ^: U1 M3 L; d. C" R! r( Wtrade-time7 V/ W  g) w) u$ s& Q
;;
当前发生交易的turtle的交易时间6 ^: P( z6 C& z9 d6 I
appraise-give
6 b8 C! I" d8 T# c0 r1 N;;
当前发生交易时给出的评价
1 k1 S  ~# M! a$ R/ V$ Uappraise-receive1 t' f5 a+ s' a8 u- ?1 D4 _& |0 L' T
;;
当前发生交易时收到的评价! B0 I6 J4 u. H" G
appraise-time
5 ~. B; E# F8 l, x;;
当前发生交易时的评价时间: a9 U4 X+ K8 d! H6 \+ O. n3 m) H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. A. r' W* A9 H, [" i
trade-times-total
- Y4 l: {" \1 ], h2 p' W;;
与当前turtle的交易总次数
5 ^* a* d% l3 Q8 v5 C- [trade-money-total
0 s. O; o$ C. S6 m7 j2 l;;
与当前turtle的交易总金额* o7 ^( m6 A# H  u/ Z. }
local-reputation
9 \$ W! {2 Q( q; hglobal-reputation
2 j$ s- T! G: {  w( u) t4 G: vcredibility
3 `# j, P/ m6 M. ^" E( p;;
评价可信度,每次交易后都需要更新
  T/ Q) ]( Z4 jcredibility-all$ F6 n( S: n- `1 d$ a
;;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# I- r8 z, |" J9 T# B$ ~2 C( p

" y9 _+ A) I1 @1 Y' n; F5 B( t;;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
5 f7 P" Y- k# w/ S2 {credibility-one# B" k$ Z& i* T$ l$ P! ~2 a/ d/ h' F
;;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
8 J6 j8 _$ V, n6 {7 b5 bglobal-proportion0 i5 K* p4 [9 [" k( c0 P& B7 E
customer% R8 a) t4 N3 Z' u; I$ U
customer-no
4 T. X. S' r0 G2 ntrust-ok( g; c. S3 r1 R# h
trade-record-one-len;;trade-record-one的长度) R. n0 m6 N$ Y  N2 _: I9 f6 E
]
, N) d1 H& c* Z1 b0 k
4 y9 ?; ^  `$ T; f;;setup procedure
  p! l; \7 ~: P+ ]7 B; n2 }! X( S' A+ W5 e3 S' S
to setup
* T4 U3 g' u; q/ U$ [4 v4 A$ ^1 O2 l+ y
ca

0 F4 Z2 U+ G( x2 K/ I) Q: `1 c8 @9 r1 F; h2 ]/ D; V/ b3 ^
initialize-settings

6 g( U  X- c6 V9 x  x6 T8 X; b2 D7 X+ L1 C9 h
crt people [setup-turtles]
1 |' Z3 A. R! ^4 A; M5 P
/ j0 e5 e2 t, j# Z
reset-timer
$ D& T3 Z5 a: ]! D: b, C
3 Y4 |& ]$ G- g
poll-class

/ S( d7 E* j; F2 _
  M) B* a  m1 lsetup-plots

# I: C) h! c, G: d9 C) p1 K$ q0 u/ Q! ?) }+ N# `
do-plots
/ o8 B! D" x9 i5 N% ^
end8 |7 y6 D. B6 k, j

. c6 K7 b% ]" Y. Qto initialize-settings& A0 J' C6 M( h5 j' S

$ A5 Z, b6 l& P3 E. i, Sset global-reputation-list []

" G/ b  x: Q. y2 i+ s8 A; K# Z% x6 R; l+ R" T
set credibility-list n-values people [0.5]
4 P9 d- X2 |% {: D7 d
4 a, }4 v& \$ {9 p" ?3 Z$ f! [
set honest-service 0
/ ^6 C1 Q+ T5 P2 _7 M& q
. H' |# H3 t1 k  L. M3 T3 \- R0 Y' C
set unhonest-service 0

* e- t' [4 D5 s
" k* x5 |; ]+ P( x, e. _2 L, Vset oscillation 0

% S& c- N! Z  u. t3 r( j- \$ w; E1 p: p3 B: x, m: K! y
set rand-dynamic 0

9 D7 M% H  ~( Hend
" x$ g1 ~2 P1 `8 ~: y2 i1 _) I+ D
to setup-turtles
  {, }. P' Z% V. T9 U8 t! n7 j5 Bset shape "person"! j, \$ E- h6 ?( o# O) \' [
setxy random-xcor random-ycor. l* P% `) P" p: d3 b
set trade-record-one []- i/ E- C: [$ b9 B: m: Q' V

. [$ }; Y( x/ p0 L# g9 F1 ]% cset trade-record-all n-values people [(list (? + 1) 0 0)]
. n. q7 x  q3 o" L

: [! [$ i( ^, X- b8 n2 ?, z3 mset trade-record-current []3 x8 V$ F  V  F1 B4 H4 i
set credibility-receive []
6 p  O7 V( e5 @3 ]set local-reputation 0.5+ m" \% {* ^' C) P' @! T
set neighbor-total 0. J' X5 y4 {4 r/ j5 E# t% }5 a
set trade-times-total 0
- ~% |, @8 {' k6 f6 [% j, kset trade-money-total 0
5 j) ^0 z, p. A6 u$ _$ l* n. J/ }set customer nobody) N/ C; H+ Z  o, O
set credibility-all n-values people [creat-credibility]
* V0 u' V" i6 L/ e5 l2 x* ]1 C1 Nset credibility n-values people [-1]. f- [0 |8 H, ^$ j4 D2 z
get-color. _4 j" ]) T1 O" `. Y& M
7 [  |# K6 B2 I: m
end$ Z2 f7 u0 L' E' e

! e  \. G% l% n8 |2 c6 Mto-report creat-credibility
  u6 O) V/ ^  S& N" }report n-values people [0.5]( S5 O) m2 Z, b2 j
end1 S+ b6 Q4 \5 p( ]. \
4 C/ w- r. ~/ o9 V4 B
to setup-plots6 ?+ H  J8 e& X7 l% e- A

: M9 ?. Z5 a, d" k7 q+ L; Vset xmax 30
2 e  n% ]. f: l
  w/ t3 k& [/ h1 \( [
set ymax 1.0

. S  C9 b: W) v* O3 T4 _0 C( s- h. S  \+ R7 C/ h/ n% u1 Q% n
clear-all-plots

% c  k+ H+ k- r/ i. \; C9 x% E; r, j3 s* e
setup-plot1
2 q& _% U; U! w2 ]. C) b

$ j( v% O5 ?; K. H3 y4 Vsetup-plot2

* A' R$ q+ e/ y( M3 T3 P& A3 a, H9 @  v. J2 {! R: V
setup-plot3

' w+ b7 t; s0 w; n* Y+ m, Q: Vend1 T5 A! I2 n9 X- N
  p/ }1 @/ m* Y" t/ T& \3 r2 Q
;;run time procedures
4 a* N5 s# X( H. T4 v1 U
: W% Z% X: A1 r2 P8 h" hto go
" l7 ~: u# n& u! [! X! d9 B7 k! k
$ p) Y+ B, x5 \& u8 uask turtles [do-business]
- }  M5 _2 F* [" i! L
end
/ C- m. l- i+ U6 N% j
& Y; y7 w- Q7 d/ `& r6 s# c/ @to do-business
: E2 L0 @4 W* m
0 B& R  ^! s1 f  n) s

$ L: b& r% c, C8 b% Z- Yrt random 360
* w& _* I: j4 T  O1 R0 S8 w: V+ A( [
$ G7 j. K" B! S8 C& l9 D
fd 1

! p% ?; X& p  C5 W3 ^% b8 d( H+ |# H7 v! L2 N5 C
ifelse(other turtles-here != nobody)[
+ L6 m  p9 n# h- Z
6 g0 O: e  N3 g* t5 V" ]* d; ~' w
set customer one-of other turtles-here
6 X4 y' I8 S; u9 i

- s: p, J- ^0 Z9 M;; set [customer] of customer myself
3 X; g" y. _1 ?4 F* C: j% |& L
* O9 d& ]% `. M; p6 V: v* Y& X- \
set [trade-record-one] of self item (([who] of customer) - 1)
9 B; S% I* N% |7 {+ T0 p[trade-record-all]of self3 Q  ]& O: s5 a
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% {6 O. A9 c3 _  r' V( u( \" i

8 @, i1 P  B/ j! G; m: f9 Q9 |set [trade-record-one] of customer item (([who] of self) - 1)  J' `. _' x) F# i$ ^" @( z. U6 ?- ^
[trade-record-all]of customer

% ^- h" Z/ `5 V3 |2 f+ P% ^5 J0 H$ k7 l/ X
set [trade-record-one-len] of self length [trade-record-one] of self

0 y+ L+ P+ k" E& L" u9 S- W! Q
* ]. q# I' D' a6 e% n& oset trade-record-current( list (timer) (random money-upper-limit))

  \9 R. n( q  z) D. S: [  s) p2 O5 s9 k: h
ask self [do-trust]
. o* \# A( P8 e9 y7 X;;
先求ij的信任度' q4 ]0 [3 g0 ^$ f3 i

" R% W# x& p$ ?) p  f+ r8 X5 yif ([trust-ok] of self)
/ O. ~7 K5 `. g  c+ W;;
根据ij的信任度来决定是否与j进行交易[, A0 n! ~3 l1 |% k% z* D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 x$ [% n3 b- r; d/ J0 D  }
; ?; R5 v9 n0 W" O
[
, D' H, ]2 b3 r6 _2 X7 T/ i& A3 x

! T4 Z" B& v" U" Zdo-trade
0 }. x  X' f/ d! g

% T$ M7 G# w  @# F% v4 g8 j! Nupdate-credibility-ijl
2 ]6 b: h( S+ d

. D+ k" i4 V2 b4 J- @9 ^3 fupdate-credibility-list
+ i  z3 H6 k8 Z% T  o
" i* y  I; W  b+ x8 [. u" Z
% s3 M' ?( K7 `/ j6 a* g! q
update-global-reputation-list
1 V6 A9 _) p1 t# i5 N* Q0 F

  b" c0 b7 ~- D. Q+ Y& @1 u, Ipoll-class
, p1 p# ]8 E+ Z/ ^% R8 Z

$ N& ^1 C5 Y8 J9 @get-color

$ }' u7 P3 R! [( f
$ D8 g# E5 N  n, B7 s: n]]
  X+ Q# a! F1 p6 G- u* f3 q8 E& S
* d% w, y# j- L* P. ^% @;;
如果所得的信任度满足条件,则进行交易# w, l/ F9 ]7 T! B4 V8 b

1 Z$ O* ^& l" _  }% A3 L% G5 k6 s[

0 R4 d; S$ b; N7 t6 h2 d$ u9 M0 |; s
rt random 360
& R2 E9 X! g1 p: k# F& V
5 U  @8 ?4 S# f. H
fd 1
( Z- S! _$ m" @

, u* m" a& O* e, T; p- N% M]

9 g1 q, G! t$ A0 C3 M/ Z+ j7 N. ?* W! S+ h
end
- @. I7 I9 o% P

6 f1 ]/ s  R2 y! Y" l( c) rto do-trust ) e3 Z. r( P3 l; l/ t: Q# F" ^
set trust-ok False
' t8 v5 n$ D# B( P
# w3 a4 K0 h7 B1 S

  t4 x. G# r& \8 Z# Clet max-trade-times 0: p4 O3 z0 V8 s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 ~2 A# x; Q+ a& s1 ylet max-trade-money 0
+ i" n* G4 \7 C) r0 x3 V( {' Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 C$ }' q0 G1 q: K' g" E' ]. H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- ]' Y# W% `0 Y3 f, ]# A' m! }3 l
8 R3 u  |9 m9 A1 _1 z- ]1 c+ ~& B

' ]* b0 k6 f' h7 Y8 m( _- Rget-global-proportion5 b6 u5 v2 A4 F
let trust-value
' K7 z+ k  H) g) H! y& O  c: Klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# d+ c4 v$ O# j9 |) S  @+ o$ Y
if(trust-value > trade-trust-value)' U6 k) K/ r; _- J% t7 ?) @
[set trust-ok true]
: U, z5 s# k/ m' ~end
$ ]3 L# Q& m1 ^6 ]0 i
( }% z' B/ P3 Hto get-global-proportion) m' V6 H3 t7 D3 \+ L/ d5 z1 d
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( g$ Z' ]6 _2 n; ]) a+ S. b[set global-proportion 0]
- o0 E$ \" o# A4 a[let i 0; O! _0 s; P7 x7 s( {. i% x
let sum-money 0
& }' Y7 ^( {! Y1 J; r7 Wwhile[ i < people]: P7 d3 L, t" c' d. O: k% H1 w
[! `6 {' k% b; ^
if( length (item i; p8 ~: ]/ }0 x% \9 A! O
[trade-record-all] of customer) > 3 )
& i% ^2 p+ ?3 y8 V1 {) ^/ y
[7 F9 X0 ^( w/ j7 ]+ F. p9 x
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 |. R5 W/ j9 \
]
4 {* o8 j0 Y) r' [  {* L]
4 X0 N& W* D; N3 H2 m) L7 O3 M2 Wlet j 0, S4 e; o+ f# {1 x6 z& h
let note 00 s: V8 h  p! R8 [# N; S3 H7 A2 ?
while[ j < people]. \( V/ j! b+ `" ?
[' _9 C1 c- e; _4 L8 e# d4 S  o
if( length (item i5 n3 q7 y+ ]* K$ L) l
[trade-record-all] of customer) > 3 )
& J4 L7 Q  W+ @8 g9 d
[
: `1 j2 d1 D' G& b: uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 {% m, P! R) ]7 L5 U$ E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, f7 ], X- e( f( p0 K9 i1 U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ T* P  ?" Q; |]
6 R8 U) }- i! ~2 {# F! a; w]4 T# ~5 u$ I* D9 G
set global-proportion note
1 ~, B2 L- ~" U+ d, `5 _) T]$ p# v( C8 {1 {3 c
end$ w+ v( g. k3 R; X" t* B
. ]9 l( ~) T- k1 G% _: O
to do-trade8 ?9 [1 Z# L- K
;;
这个过程实际上是给双方作出评价的过程
# H  h0 O' H1 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) d) g" B; b/ e' ?( v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& Z1 f* b( q1 }set trade-record-current lput(timer) trade-record-current4 p, a4 [$ R! g  F& w  w7 S
;;
评价时间
/ c; p1 P, ^& y3 Vask myself [+ y! U& Q! Q- ]6 n' f3 z
update-local-reputation
$ E' ?8 b0 z( J8 Bset trade-record-current lput([local-reputation] of myself) trade-record-current! q8 O2 k- K- q7 E
]
: ^0 w, x) K5 g2 Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ l- v1 W: V  Y# o! z;;
将此次交易的记录加入到trade-record-one
+ |  T  i: k/ d% Vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 _. s7 y, o- q+ p3 e) J- a' }* \let note (item 2 trade-record-current )
0 k4 {, E! }; kset trade-record-current
1 ^2 p) w* ]' y4 \; t(replace-item 2 trade-record-current (item 3 trade-record-current))
! Q# r* f. a+ H
set trade-record-current! e0 J) m5 Y; t9 Z6 w% V  u
(replace-item 3 trade-record-current note)
8 U5 V5 I; }7 k2 }, v/ y9 Q5 Y# e( [- X9 M7 g' D. r3 K% t

( |' x* u* n4 ]* cask customer [
0 R% A7 k* c, _update-local-reputation& ?0 H; Z+ w- @, T: P
set trade-record-current
2 v, ?  c. n* |* `: Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; S, c' j2 ]) D" f0 D' h5 r) l]8 J  ?# b" t, B) }( |  t. {

' Q  b1 k  Y% c: u! A

$ v' x! w0 f( P* q$ ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 b' Q, I5 }, B( G7 B# B  R
1 J4 }/ b8 m7 h. J5 J  t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 q  \0 C7 P. Y/ N. Y* A
;;
将此次交易的记录加入到customertrade-record-all. p4 i7 |  Z; u
end
9 U2 n% O0 P) `! C( x$ r3 j
: F& V$ @" Q; B' }* M5 v" N. ~to update-local-reputation
$ i! s) F; T+ Q/ w. Oset [trade-record-one-len] of myself length [trade-record-one] of myself
6 V0 ^1 ~; r2 f+ b
1 K2 x' v- x4 b7 P( t9 j. t' M' {3 }' k% ~, i
;;if [trade-record-one-len] of myself > 3

& ^/ ], p& V8 ^7 pupdate-neighbor-total
/ a: S. [; {0 Q& t0 Z% V6 u;;
更新邻居节点的数目,在此进行
6 }$ }# w2 I& v6 E# Xlet i 3
7 m" L) q  x0 g) ?3 llet sum-time 0
# D0 @% p! H6 `. f5 w  d( `while[i < [trade-record-one-len] of myself]
. X9 ]' G1 H5 S. B0 |7 A% j6 \. j9 R[
* W" q. _3 Y" U& m2 H0 gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: r' m# A' H) d) ~' bset i
2 n. C$ G- j( K5 G/ X( i + 1)
& s% Y4 ?" ~: |- P3 r9 ?# ]
]$ m. E! I$ \/ y% ~; |. E1 E  U
let j 3
$ W* l' A1 N. ~- l: w8 r) q! d# D7 ylet sum-money 0
4 \" ]. d7 f9 ^! r( S5 ^while[j < [trade-record-one-len] of myself], ]% \  e1 }* b+ r5 S% O# _
[
6 z% [: x; m6 O( ~# t$ K/ V0 d$ I- F) Rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
' G/ Z! m# m7 a$ T6 N5 W6 F9 rset j4 ?, N7 M: ~4 N
( j + 1)

" T  L: @; J# Q9 ~2 {" R8 `$ F3 V]* P% P8 V8 i+ E( G  ~& k+ a5 o. b7 q
let k 3
4 I* {* p% p2 k( t. vlet power 0
( w/ S2 r+ j6 @1 r  qlet local 0
! J  b9 ]7 n) H! Z2 {while [k <[trade-record-one-len] of myself]$ q0 K0 h+ M9 B! B, J
[' x8 h) R# q$ K8 c
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)
# h! X/ P- O0 x/ a3 F- n$ V5 D# mset k (k + 1)
( R, z8 O: f3 Y" k$ k: x]
" m) }3 _+ O$ w! [set [local-reputation] of myself (local)& D+ o$ c* q% ?
end
$ F6 w  g- k9 n: z0 b
) v9 }" Y" q  V; I$ \3 @to update-neighbor-total
& l2 e/ @; |3 [, D' P! C
# I$ k4 v7 k! p8 _8 F% uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* R" B+ _) r1 D4 G6 d5 ?
9 l' n0 p% Q8 q# h1 w2 S

2 ?- R( P0 N# ]$ w# ]end
5 \: _5 `1 I( ?* s9 i; O& V9 F1 k2 B1 Z- R
to update-credibility-ijl
/ m) e- t( w3 z2 g7 c) M0 w3 t7 J3 N' P2 k; O" u0 I- B' 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。
, o8 ]2 f- I9 [) O' Z  H+ f, G% d1 Q6 Dlet l 0
3 k% n! U# \7 S( ~/ mwhile[ l < people ]( D9 s7 o/ B1 b  B2 f, u1 `$ t
;;
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
: G4 V4 f6 Y- _& ], ?( b" p# n1 p4 E[0 H* l" G. H* l: X% ^. M% Q4 b6 ~
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. r% w( j0 U* x0 R+ g" xif (trade-record-one-j-l-len > 3)
9 P4 H: ~; R2 p. e- 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/ k: x. _9 `2 P; |8 m
let i 3
1 J' k" n0 _9 z: olet sum-time 0" u( @% k6 x9 [
while[i < trade-record-one-len]
4 y& M! _' p9 ^' t: p[6 r0 C3 U. _* o# i% _1 R0 N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), T0 F  D" N/ w
set i, H/ O- g5 p$ Y8 J+ ]9 [8 u
( i + 1)

: h" l/ b# R+ U; Q  I4 \# T2 q$ ~& o% U]
$ l1 R9 w# N0 u( G3 Clet credibility-i-j-l 0
: a7 c% q( {- f4 O9 f3 _4 k# b;;i
评价(jjl的评价)
$ e6 v8 X0 G7 p6 [( u9 |1 U. alet j 3; A7 u7 r) D) c
let k 40 r% q0 Z4 r5 a  Z) N. W) @
while[j < trade-record-one-len]
; S3 C, \! V& W  B[
+ h+ j, s6 Q$ `1 E# L" nwhile [((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
* |7 Z$ y1 M4 p6 f! z/ b* 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)" n0 A+ I" V1 U3 c
set j% r2 K. r( o$ K' z; |2 A7 g* N
( j + 1)
1 O: X0 i1 i, O' i6 i0 s2 ~* k
]7 v" |% C' L* `9 p' @
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 ))  Z* f  c7 K! w" u; D( ^/ D' J

8 n9 y, Q% T+ {8 |. W

! h. i4 O; t% b- `+ f- _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ J: |* }  J) {# f3 ^4 z/ X7 |;;
及时更新il的评价质量的评价! I- @% ^! Q' M' V1 K) s2 h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, d: t5 e; A# @. S3 K- K3 A9 Kset l (l + 1)
  H$ l+ R" l( y# e& J]- Z2 t  T/ R6 D8 ~
end6 q, x- U" S2 ]

9 a" `+ f. h! Oto update-credibility-list8 c( d3 }) Q5 V( z# R( G% n
let i 0' [  e: L, g3 v4 q% x6 m
while[i < people]
& A  g" B, a; j$ o[; m$ k4 u7 a7 Q! d- v
let j 0
- l" x- X0 J- ~' X- s! K5 hlet note 00 u3 K; P4 L1 B9 `$ n2 f: `, j) ^
let k 0" E4 [5 ^& p8 c2 k
;;
计作出过评价的邻居节点的数目
+ o3 A& p& R/ }+ pwhile[j < people]
# o$ c; I9 K  s% a; d[
5 c4 Q1 ^3 h$ [if (item j( [credibility] of turtle (i + 1)) != -1): ?+ x$ T7 d7 x2 L
;;
判断是否给本turtle的评价质量做出过评价的节点. X4 B1 J( _7 s6 u% Z
[set note (note + item j ([credibility]of turtle (i + 1)))1 k0 C0 G2 v2 b0 b! F3 U
;;*(exp (-(people - 2)))/(people - 2))]

9 b' U) p2 B$ d% k2 S0 iset k (k + 1)
: |: m4 U! U; I1 T]1 ?& S/ O# E/ j, y! |- t
set j (j + 1), h( o  q" I; p
]
9 [4 [5 q8 z; \3 iset note (note *(exp (- (1 / k)))/ k)) \( Q$ _% M1 ^( E0 A9 M8 P
set credibility-list (replace-item i credibility-list note)
' Q1 Z7 a- a. yset i (i + 1)5 f' D+ j7 O+ `
]& Y* A1 ?; @% h! R6 }$ S/ W* ?
end. A+ r5 u: l& Z9 D

' l2 j7 @1 G8 A( p5 Qto update-global-reputation-list7 i0 v: X& ^  V: i' V, }& x
let j 0
/ f2 m5 x; W  A* U: \: Xwhile[j < people]
* _" B" D- E$ h, q[
' g% e  ^( d7 ?9 vlet new 0' y8 e+ S) d6 U, n9 r9 ?5 V
;;
暂存新的一个全局声誉  s, A" S4 u' L
let i 0
& l2 p2 j$ S$ @! dlet sum-money 0
+ M0 X: ~6 X- ^- ~, A  elet credibility-money 0
, u. p, s* w( f& E6 I  p9 l8 |9 pwhile [i < people]
$ t. r/ x( P2 v[
9 P# k( J7 K( E( |9 hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% h% O" X6 }, x- vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' ^+ O# S( c6 J6 D; |- x3 n
set i (i + 1)
# c% y* B) T  n8 w6 K; j7 w]
' F( k' u. A0 T/ M8 |/ j1 M4 zlet k 0
! J: ?- h: Z" X& C1 @! N3 Olet new1 0) Q0 o- m2 r+ m% b
while [k < people]
% c9 d4 S, T' u8 n: f" W2 b[. z1 Y: }+ B7 }; e) C$ r
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)
" ~. Q6 j9 G( aset k (k + 1)6 G; X) n  v; L, m0 q
]0 _0 x+ ~* b0 D5 E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % K& F; I( S( i, S
set global-reputation-list (replace-item j global-reputation-list new). f7 B! m- e/ _' s1 \/ ]3 E
set j (j + 1)
- S, X. _" f6 f& M/ B; \  m]
- b% j  \! t  d) m% Y* @end
4 n! G3 Y' L  i3 W/ }* E
7 U& d0 c' _( u. M1 z8 a8 L3 M5 \8 S9 p/ V, d! x
% v4 h* U* y  m, Z* M5 A
to get-color' H4 ^7 y+ O4 l4 r# @9 m9 {

/ I% m0 Q6 l7 u8 k4 M3 \1 mset color blue

4 ~( h# ^4 c, n0 ?: V! [; V5 g6 Dend
; e0 ]2 R) \) F" L6 n; O5 [) k& Z3 e1 e) ?% ^* ^
to poll-class* ?( x: Y  |( o
end( r3 I! U0 A. E+ b% P% O! Y/ Y

* c' K4 ]6 @9 z6 Pto setup-plot1
6 I, v* ]6 O# t/ T7 c3 w1 \# E6 n( t8 R. i9 b6 w0 g) m8 b: W
set-current-plot "Trends-of-Local-reputation"

. i/ u$ S/ f0 y* M' [& n
7 X& v& r! H4 ?0 ^! q2 h3 w" L& V1 Cset-plot-x-range 0 xmax

9 a2 l/ w$ z- r- ?. \* r1 E, e' I" k
set-plot-y-range 0.0 ymax
' s6 p2 U, g1 x$ M/ @
end
: w0 U) q6 h6 d. u
% ~9 K% v! }2 e" D$ N" n* s2 O& Yto setup-plot2
+ o# D3 y8 D, k- @; Z
: q0 I2 B! Q! h  hset-current-plot "Trends-of-global-reputation"

7 x! n6 _( d$ |! C$ }- {2 h# H6 N9 f( a+ x
set-plot-x-range 0 xmax
# T$ l# K6 g" y, F/ B
- J  X* {: Y2 M) k' k# r
set-plot-y-range 0.0 ymax
, o# r+ ^& \# p6 n3 m9 T6 P
end$ e# w- T+ x9 R8 U$ O- {; C8 c6 y" d. N

* e! j5 O* }- l9 \: Nto setup-plot3- Z' R4 D# K. w! z

6 w- O2 n- T. W6 f! Zset-current-plot "Trends-of-credibility"
/ @# A1 W* G+ ?/ x; s, U! l! S

! ?( B* }- q2 b) i; R( Cset-plot-x-range 0 xmax

. X/ `, k8 f/ C( x. T9 q8 M4 Z0 V/ m  h
set-plot-y-range 0.0 ymax

# q5 [) U2 T" X+ b) V3 q2 jend4 i$ p2 J8 T6 w/ c( U' K4 s6 J. m

5 m; |, ~# C* G  tto do-plots
! ]* l" y, Y( ]9 M2 P" qset-current-plot "Trends-of-Local-reputation"
& B& U' F' S! W# }1 L6 Wset-current-plot-pen "Honest service"% \- Y2 h5 F$ Z4 G7 p- h2 [
end  }0 a. h: u8 E) e; C

! Z, I" W& N* `4 k/ ]. 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.
) M* q! g' `% @. i6 w
+ D* N4 ?7 B. N  V* G2 Z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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