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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:8 |. o% j+ O! p2 Z7 R
to do-business
; h' `% W8 H" z% D& f; p rt random 360+ s) ?4 o) y& N+ a! G  k
fd 1
6 ?/ a9 r8 n: N" j: Q7 l6 S) }3 j ifelse(other turtles-here != nobody)[
: G/ B; v) a9 H% L# y0 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.0 K; J6 T6 y1 p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 d+ Q: f/ _- n9 Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# q2 U% [9 K. Z( G+ d7 }, @
   set [trade-record-one-len] of self length [trade-record-one] of self
' W7 d  Y1 T6 c1 }   set trade-record-current( list (timer) (random money-upper-limit))
+ {. i$ F7 U8 U; i( V7 r
, q5 a5 W' ~: [0 D+ T4 r" |/ V; C* `问题的提示如下:
. l( t! F1 p0 ^! ], C: F- `* {  e' h" t, ?
error while turtle 50 running OF in procedure DO-BUSINESS7 @% S+ F  C5 S& m; r- [% ^0 K
  called by procedure GO1 J+ |: ^: q3 X5 r7 \2 s/ r$ H8 M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  y; t  F7 i( E- v! f
(halted running of go)
* l* ]) S, U0 t( b/ A6 I- a+ a
. b& _& l2 e' C3 y& @  ]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~~  W" n. {+ r* P# C% a" c. Y( 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
' J+ s. i" _# Cglobals[0 g5 f4 ]& `# H
xmax
: t5 f/ W5 Y8 Q% l- t/ lymax" e  ?& e/ D" }
global-reputation-list9 e( U  r8 j$ s% L1 M3 Y
- P5 |" @9 p; s1 Z9 S$ i! k
;;
每一个turtle的全局声誉都存在此LIST
6 X; ^: o1 p9 scredibility-list8 C2 a- L- W) i
;;
每一个turtle的评价可信度
1 S7 ^1 D' R7 d9 w1 X* zhonest-service' {7 W, [# f0 s3 Z: }3 r
unhonest-service
8 V! E8 Q* u7 L/ T# doscillation6 q0 i" n" I- @* V, _% a' ]
rand-dynamic
: ~6 r! p4 g9 m. {1 W]
/ t, q2 n( t' {9 j! d( o3 [: D  Y9 j$ i8 ^( I
turtles-own[
# Y4 Q6 g& Z3 b# I. A% ^trade-record-all% z' X0 k. m. x& S, A( P+ ^
;;a list of lists,
trade-record-one组成
$ X# t$ g; y9 T# gtrade-record-one2 @. B- T, P& Z# x- v! D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- C' O) H6 n) g6 p# ]6 [. e

5 W" u  C! U; c% t6 o3 |' I;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]/ Z7 m" u0 t# c2 l3 W- o1 h' |
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]# g+ M' L! I$ N/ H* n! F8 E4 X
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
2 h; \7 n, ]( ?neighbor-total
$ V; i+ r& b6 n, `( o& q;;
记录该turtle的邻居节点的数目
* v4 x# r8 ?( c. btrade-time
' J% ]4 j0 P1 |- h) C;;
当前发生交易的turtle的交易时间+ k2 c% b2 A. d: ?3 A- m
appraise-give
: m( e- }2 L6 y% d( w+ q8 e, u1 i;;
当前发生交易时给出的评价
# E; B( `# m: N" s' `2 C; m, oappraise-receive2 B' a3 X7 ~& b) y& `3 D
;;
当前发生交易时收到的评价+ |2 b1 U. t, b/ U* A# L
appraise-time; W' T& S# d( P) a" T
;;
当前发生交易时的评价时间
9 c0 n2 n" V( t6 u. i3 olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- ~7 O7 Q( [! V8 k: r
trade-times-total
0 B# P) h* R( ]% z2 w;;
与当前turtle的交易总次数
6 D. }5 L1 ?" ^$ |' S4 R! utrade-money-total2 J1 l9 r, V" w. A9 D
;;
与当前turtle的交易总金额5 H  k- A( s7 z8 {5 t; b  A# o1 H
local-reputation1 d: }4 s- \( ?0 l$ j9 T/ G0 g
global-reputation
, {# q: Q$ K3 T/ ~: [: Rcredibility; E. k' s* X4 g3 ^2 Q
;;
评价可信度,每次交易后都需要更新
# l8 ~9 U9 H; e  hcredibility-all
, F  q" z' x6 @9 K;;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
$ u* p( [1 R5 X- S+ k# W9 O. s, w! ^0 N" V: |: l
;;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, w' E$ b2 R) F0 ^7 P. l
credibility-one; e& W% D" T. F4 s6 q5 W. [& x$ A
;;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
. g1 t, O7 v4 `3 {( n! f7 g/ nglobal-proportion3 D# C4 \: ]+ h
customer9 K6 o' \' A0 Y! m- e0 n
customer-no
0 Q4 G5 S( N, \8 [, q1 p& G( c5 gtrust-ok3 Z* H( G2 K* C  w( t0 N! Q
trade-record-one-len;;trade-record-one的长度
3 B+ [5 M" u- a]( w" y7 k: e3 N% N! ~4 ]8 _9 z) k
# ]' K9 a- T  {: X
;;setup procedure  i6 u# [4 ?, ?0 D( H7 `

8 I% J4 u' |1 ]2 F( H6 z2 W; nto setup
8 T9 p8 U. {) d2 n7 B: c, U3 q- E) |& k
ca

3 o% x. m/ W* ~3 C% U( N! G2 t: N. K  @% P$ F! C* t& `
initialize-settings

7 A* g( [8 q* r9 h  u* Z. f  w' d& w+ B& _- p! I) S- R! `
crt people [setup-turtles]
8 X, Q- `* k5 l. h' z# F) ]; l

+ w7 a, e% w$ _; }5 f$ _reset-timer
8 R1 V& N4 A# K9 f9 N; i1 v% f

- F( f2 C, p4 y/ p) w: G' kpoll-class
; h- P" e# H9 U( T8 W
5 N+ E  P1 r; u1 {4 U
setup-plots

( M! A; c$ c0 j8 I3 D" G+ I: h
( X8 M7 H) C! m) z& O5 {* E" Edo-plots

) x5 C/ l5 \7 o, R8 \end1 s) H  d* I6 A8 W

9 a3 K  J, z# S: c, }# z( ?5 {3 l$ [to initialize-settings- d" ?7 h  v! b

: g0 n, O7 O, [set global-reputation-list []
. R8 G' c# f9 s* c0 D8 `8 `' r
) `! L; ~# x. e; i; \
set credibility-list n-values people [0.5]

% \" t% ?6 O5 a& r$ z/ `- D
8 b* a; _) x) E9 \set honest-service 0
# ~- n# |6 w6 U. t+ N
5 O7 u* ~( D. O1 |2 j* l
set unhonest-service 0
8 \4 Z1 l/ Q! t9 O. W9 K
' L" {2 L) X5 \% A
set oscillation 0

% F  ~- d4 Y9 i& o, e7 _1 ?+ l6 Z( \& t+ ^6 X- R/ {
set rand-dynamic 0

6 r) R! _1 D+ ]end
2 `4 Q) C- |( v) G! X* ]1 e3 R  \
$ i# D2 F. K' _to setup-turtles
# q# S# M  `$ S- I3 X& c9 mset shape "person"
! K1 [4 t' u* l9 b) u  ysetxy random-xcor random-ycor0 t# Z3 a8 I; X7 T
set trade-record-one []
& h$ W0 G; H. Q0 P" p2 O1 f

- @$ l/ P! C: R3 Mset trade-record-all n-values people [(list (? + 1) 0 0)] , z9 `" C7 C1 p4 s; j- l* T

% ~8 I# r3 O; f+ r5 Fset trade-record-current []7 T7 G, Y4 Z' B6 p( V% [- W8 Y6 v
set credibility-receive []( n( w  C! K9 n
set local-reputation 0.5
- I2 K0 Z" d: Q2 @8 Tset neighbor-total 0
! k( p( f' [8 U- Rset trade-times-total 0
6 ]3 N/ W$ N( a, {set trade-money-total 0
' g0 K/ D( c* q: h" hset customer nobody
! Z/ q6 h: O/ V# C5 B! W6 {( q4 Rset credibility-all n-values people [creat-credibility]
2 ^' l1 Y( r4 L1 eset credibility n-values people [-1]5 C* x5 u/ x4 g* c' N# ?
get-color3 D( ?$ C/ L1 K

5 [. j5 I+ U" _, F! M9 Mend
8 s5 y2 I' d  r0 k2 w7 X% ~. O& i4 g! E, ]+ U
to-report creat-credibility! o6 U' a% C$ b. ]; p+ v
report n-values people [0.5]' U5 V+ D0 I* H9 S: B
end
$ \9 A8 i9 @2 V" x
- N. D# P, n' A9 y/ a9 x/ A; sto setup-plots
2 G. A3 }! }, H  K" y0 X- T3 U0 ?/ @# a4 A, x+ `
set xmax 30
8 G6 Y, f/ N- m& o
* d0 U; F( ^' Y3 A  O
set ymax 1.0

1 t, \2 ?; P( e0 M7 V, d) i6 \/ }0 I" F2 r( S4 j; t" K
clear-all-plots

- ?* L$ c" o0 B- C7 S: `" S0 R  `
setup-plot1

1 Z" I- z: A7 X7 b# t) q; W  |( O1 t7 ~- U) N
setup-plot2

' p1 k4 W* R1 |9 ^
4 k" Z0 p3 g. o/ A' O" Xsetup-plot3
! j4 _7 R7 u- N. N
end
1 I( x3 m& i5 K4 t7 A/ D5 q1 }  |2 A2 Q# S0 Z1 }% g% d" W
;;run time procedures
, `* |- p+ B0 N, d8 j2 v
" }  X6 k  \, K8 lto go0 w+ H# r" \& j6 Z( s

1 f% y" Q# P) F& J2 D5 e# b/ }ask turtles [do-business]
1 U8 e) U- v: {3 B" @1 r! _
end" y$ Q( R# J' Y' G) n: \
0 `: Y1 I5 h1 I' D9 ^
to do-business
6 m3 h3 ?- H+ D6 w6 O/ u7 S9 T
3 r! {8 @; ^& g% o0 x

3 `4 ~, @8 l5 o% Brt random 360

/ p7 k9 l' ~; @3 n8 W( g- Z+ R9 q6 b- z& d. a
fd 1
8 g, F' ?' i- V+ h& ^

6 ?! n4 S+ H  y+ d  W) c- lifelse(other turtles-here != nobody)[

/ z  y. y8 e% O  n7 B+ j' @  Q% @* q" B$ s" d, _
set customer one-of other turtles-here

- p, S' M5 J2 m- K% y
) C2 V* x9 U! c2 L  _3 u7 }( h;; set [customer] of customer myself
- C! V  G( B( W8 O6 z

$ l7 o" y- r% U+ W- g- fset [trade-record-one] of self item (([who] of customer) - 1)
& _6 P& A* \) ]3 p[trade-record-all]of self8 ]+ G  {6 b$ k6 d/ H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  |, O3 {: E0 r+ K9 E) @
. v" |/ K. C1 Z; Dset [trade-record-one] of customer item (([who] of self) - 1)
% J7 J7 c1 Q9 S% Z[trade-record-all]of customer

4 {) S1 t( d; p( z6 J; j. z- B+ O4 y8 f# o. [: n
set [trade-record-one-len] of self length [trade-record-one] of self

% b& q& v5 P1 J" `4 X  U. @, T3 ~' y0 }' {( |; p' I' \
set trade-record-current( list (timer) (random money-upper-limit))

& |6 t/ S3 A3 g1 }7 R: m# Y
) q4 S% V  E( n( ^. I  a7 Rask self [do-trust]3 o( q' ~9 x6 e/ M6 V! O! `
;;
先求ij的信任度9 d4 l" e# B$ P6 t3 X

% _0 i! x# c2 {6 f+ K7 u& R1 c4 j# Lif ([trust-ok] of self)& |5 c5 H5 t1 w. U9 L% q7 p
;;
根据ij的信任度来决定是否与j进行交易[/ B* [' f0 I' W
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ x: b1 Y9 w9 {& }/ E3 v
1 P, q! O) K5 a0 h6 l" G[

* x/ C; [; P' B( r/ ?  V5 ~" A6 h  D0 j5 J2 A
do-trade

& j6 f9 R/ C! T7 J" ?: K  C
" \. `1 E7 h7 S/ h& O9 Wupdate-credibility-ijl
$ T4 c2 T* @- s: ~0 [
0 l2 f, `+ U* w, |! U
update-credibility-list: ]& G( `& C- V& _- p0 r2 b
. s" U: V. u7 u1 Z7 a

" x4 b! [% h: K9 m: X% Fupdate-global-reputation-list
% Z5 B3 O1 {( r* s

# g: |$ v: e8 [: X0 rpoll-class
7 U- J$ h* w$ y6 W
5 j& c/ ^. L/ u% v$ y
get-color

- M3 d- z; e* ~% l4 \1 h& t) H! G  p6 P& R/ b. n5 p
]]' g! z0 t& w3 h- g

/ e# x0 B$ L, O/ b0 Y) q+ ]: _* L;;
如果所得的信任度满足条件,则进行交易
  D3 ?4 b' s% t1 C
, G$ m' O8 t/ X/ X[
, P# C2 N5 c% u# X6 y; k

; Q6 g6 o! ~: p+ N" Z# ^2 art random 360

/ w5 s7 t0 L" r) q# F
2 N0 ?3 U; R5 P  }- T! V( gfd 1
/ h& L  a) v# J. i/ x/ ], h% O

( x! C6 q( a( }6 D]
: X+ @# H' C$ Z6 ~* E; h5 B
) M: D0 I5 G( n( W1 R8 a# @# w
end

( D( M0 |0 d8 B% D% ]) C
0 s2 C1 I8 b2 L& P7 B: ]4 A3 Oto do-trust / e- y& h  h# O' c; G- S- k/ s. D
set trust-ok False, y: ]' R* l$ q: [% \) }
: r# u2 C6 Y* w4 u+ x
. |% I$ g4 ?2 I2 F  X
let max-trade-times 0; H" V( n# \& f
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 V( e" p3 g8 y; rlet max-trade-money 0% P2 K5 ^& B6 M% ^
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) T9 i& U8 k  t2 U9 M- `
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), Q( |1 U8 [& y; F+ [
' y2 v6 X- w  W# @- j. h. A' ?. f% t1 ^

- G1 D! L2 ^4 _  O, uget-global-proportion( v- R, }8 {. u- K6 R* X  ^0 Y/ s
let trust-value. [5 ?% x# \! Y
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)
% a$ U3 X2 c2 M
if(trust-value > trade-trust-value)
2 `$ h/ G- k: C[set trust-ok true]
5 i$ U) S5 O; S! |1 ^  xend* f, r& C- w. N8 Q

; W* \: S/ |% e" Nto get-global-proportion
6 f0 x0 ~$ u  D! \9 U6 A0 oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; C; T% t1 H/ _; d7 B; H% b9 A[set global-proportion 0]1 ^9 t5 u7 q" o# `2 V% d
[let i 0
8 @1 [  A/ i2 }) Zlet sum-money 0
8 }' ?3 k1 z" {: N$ Gwhile[ i < people]
2 B; H. e) z6 \3 L. A[
- E, E" d2 p0 V& u" h4 T( F3 ~if( length (item i7 p' G2 x/ ^# S/ g
[trade-record-all] of customer) > 3 )

# V0 l) I! N: F: ^* @) {[
* F- q/ v% d  ~7 n) c8 G7 t9 rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 J. Y4 q0 ?; h: K9 i" r  J' e. ^]
+ C3 f) A) }( Y0 ]1 G2 W]
9 A  [; {" P2 o; B5 _9 Ilet j 0
. b3 v( v) I' ]let note 0* q/ s; ~, j, d! l  U' ]
while[ j < people]
' Y$ ]' w- w: R( U- c% z1 C1 d[
; n0 J) P% i0 v8 N$ [if( length (item i
1 n6 |4 p1 F4 Q5 U: M- z[trade-record-all] of customer) > 3 )
2 x# k; ~3 D2 g, U0 ?, G
[6 p3 ?$ X8 U0 u9 Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& u, x2 M/ ^3 t" B; v4 \! V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 r6 ^$ m. Y+ d; g# o$ G[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ O4 X! G" D9 z: Y1 D9 L! s]
, W( @+ ?. V3 V$ I" m]
1 p% t, c! [2 U4 fset global-proportion note
( K+ L" |; o- X& y4 A: h) m8 r]
0 ]$ X) J( U! F' cend
- t3 u3 L) k4 s  ]. B" u8 p0 j' t% r4 ]3 h" X
to do-trade
2 U8 |# k! A& _8 G;;
这个过程实际上是给双方作出评价的过程
( B# j1 f/ j7 c7 [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* a# Z1 s  e/ t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 h4 d! E2 s: _
set trade-record-current lput(timer) trade-record-current
, X% F6 f* W0 ~5 u. |: G;;
评价时间7 U' p, Y/ K  }4 |1 s* Z2 _* ?
ask myself [( a  }7 X. X) I, F
update-local-reputation+ \* h! y/ O( T" ^( S
set trade-record-current lput([local-reputation] of myself) trade-record-current
( _" d3 x6 B3 [/ q]
/ L% B5 {" [# ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ j3 p$ y- B7 E& r, c3 {1 y  c9 x
;;
将此次交易的记录加入到trade-record-one
! k/ ]. u  I0 c4 [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). R" g% {4 W) \: L' E& _7 n9 y
let note (item 2 trade-record-current )
3 ~% F- H. x8 V6 u( Dset trade-record-current
: X: i6 b) P3 d  X  n6 `(replace-item 2 trade-record-current (item 3 trade-record-current))
# f6 k; A$ c& Q3 J# Z
set trade-record-current5 w  U& V/ ~' w7 ~( E1 n5 ?- w, e
(replace-item 3 trade-record-current note)
# J# N2 z) g* `3 ~$ A% o; A3 L2 ]) Z4 O  n  ?
$ I0 l: r8 H8 e- q. J
ask customer [
8 N, w6 ]: n  d9 Fupdate-local-reputation9 k6 {9 u$ n- l+ r+ _$ u9 C
set trade-record-current
# f3 x* j4 B# l  I; s- l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& O" u8 i0 b3 G# r! d]! R1 G; a3 k0 J6 H3 S
$ E- h: @- @/ v

. K' T- X7 y1 C- U) g1 g* Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  F1 g5 ]/ d8 n. D' y0 C2 ~
( I$ i; Q4 J; b3 E2 ?2 Y1 {+ x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. M" P# n  q  l' r! c; y+ K;;
将此次交易的记录加入到customertrade-record-all
. c7 x: {) w' i7 iend$ X  L4 v0 N' O( d1 r

. z+ d# W# [$ W7 t' ?. Eto update-local-reputation! O4 p+ X- K' |' p* A5 p
set [trade-record-one-len] of myself length [trade-record-one] of myself
* l; m' R! H  B9 b. E- H+ a' Q0 x! D% M

5 v3 V& _/ d2 w;;if [trade-record-one-len] of myself > 3

7 i) r2 F7 Q3 f$ C! w" \* R% C& {update-neighbor-total
& ]. J) j& g9 M" e+ [/ K;;
更新邻居节点的数目,在此进行
2 ?) H" k  v4 D* c# e0 elet i 3
6 z6 p! \8 g/ E& [0 K0 s+ rlet sum-time 0: ?$ n$ A; s& k* S* B7 p
while[i < [trade-record-one-len] of myself]
( [: u7 n; e6 J9 X[
; S! J  b$ Y) v( P  Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' C. v- ^5 j# v0 u
set i/ h: @) W* q. p+ Z
( i + 1)
. B1 s& C3 B5 M$ y3 z
]
3 l- Y; K" ?% j' Ilet j 37 c" w2 L8 x! L8 G+ {
let sum-money 0
7 T& ]+ h  j3 A4 Z: Owhile[j < [trade-record-one-len] of myself]) l9 d; L0 j6 i2 ]8 r3 c
[3 ]* w1 [2 L( y9 O$ Y, D" s
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)) j% f9 `/ q; d2 {* {* [
set j  N  J  _6 g( T( \
( j + 1)
5 \0 i; X" Q! _' _7 o4 @' d* `
]! l( \1 i" V' R
let k 3
* m9 G9 Q! |8 Z8 Olet power 0
1 `+ V# V. b3 y* ?! klet local 0* o& D+ k  N$ t/ q6 q' k
while [k <[trade-record-one-len] of myself]
. w' \) ^5 B1 D( |6 ^- ]' q[
& |0 [' A4 o9 Q. Y  iset 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)
$ M' K0 o  o/ X9 \+ {set k (k + 1)
5 T: t* n+ L  }]
  O- B9 i" Y: {6 l6 ^set [local-reputation] of myself (local)0 a% }7 G% R3 Y* a, Z% G
end
3 L/ {5 v. v8 X: `* e$ n
5 y  X& |0 s) S9 N* qto update-neighbor-total
/ u/ k9 F$ C# b; U8 a
7 s- i' J; a* E7 \: a) w9 x0 uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 U- j6 v! n$ C6 E! C; d; k$ ?& F7 T0 u

3 j5 L4 B4 W: b5 _+ Yend
/ W! w3 A; q$ L2 w2 k3 p0 {' w. x
. C/ L: ~' e0 B1 X1 Cto update-credibility-ijl
7 j* C* O6 Y4 ?1 y! m
. y" X) J2 r& d$ x" w;;
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。/ X9 `0 C# z( w7 j1 @5 i+ {2 h
let l 01 N6 Z7 |& S! _
while[ l < people ]* C) M! n+ G6 N# ?; }) N" S! N- S
;;
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
+ c8 R0 K: O/ K8 h3 Q3 W* z[
& D0 c% ?" k! s4 ]  L" W# B3 Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* l3 _  a- H) ]) y& ]
if (trade-record-one-j-l-len > 3)2 H& n: p( |& a6 n0 l
[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-one3 A4 d2 s/ f% H& u8 n+ n" v2 A0 @
let i 3
7 V! b3 G2 G; U" i+ [+ t* ?3 J0 ^let sum-time 0# A* ^' ^! j* w* i' O" M% w
while[i < trade-record-one-len]
% q& W: E3 A7 E6 w[' C" L8 i8 l! l/ F7 t7 ~5 x6 C! u0 G$ [
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 w$ C2 A, D& z0 z% B3 Q, Z2 `5 ]( mset i
7 B* ?  O0 Y( |  q/ R- t' p( i + 1)

( X3 y, z7 ?3 {: ]' o- b7 O]) H0 o, u+ G4 D2 }' j0 P
let credibility-i-j-l 0: T2 k! j8 J: i7 D. }5 \  g, p5 V& r
;;i
评价(jjl的评价)
. f# l: f7 Q  z! plet j 3
8 b3 R# l. a# Q3 T  j1 ?let k 43 {9 i. s( e  x' L5 b
while[j < trade-record-one-len]
/ {+ o6 w9 a. l7 y  ^[
& s5 v+ n2 i/ i  g) _5 uwhile [((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
+ k" `! V1 x. E) h. Z" Eset 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)
, U5 Y9 n* x( s( xset j
. v% b& o1 K0 R( j + 1)

+ M# M! z. D* y- r, D! n% R]
6 }; _$ T1 j( }. T; s2 Cset [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 ))6 M( ^, X9 [. T8 O3 x, K- E" I
/ T1 j- M0 \7 U& n

9 P, H  i$ ]" ]7 @. n( j. G! mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 v- \( i- V. R3 q8 X
;;
及时更新il的评价质量的评价* T% [8 t3 p9 G, _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: i+ F. ?' l# |, ]8 ^set l (l + 1)
+ B; c. R% I1 Z% F]) u  n/ {( y* Q
end
2 x/ k* k5 S% d# }6 o: O$ v
! f# @; w+ ?# @( T1 `to update-credibility-list
+ R) e2 f: a9 I& Rlet i 04 \0 {% }9 o" Z2 [0 j
while[i < people]
  l; ]5 Y. x( U[8 d3 y, d$ Q5 X% {: L6 x
let j 04 [$ Q  v& N1 [1 c- Z% I" s
let note 0
# E0 O5 I3 F+ slet k 0
- v% s$ H. s% z0 ^9 Z  W* P;;
计作出过评价的邻居节点的数目/ t$ u, z. b5 W1 Z% ?0 a$ v
while[j < people]' U+ k& ?" m8 P8 @5 Z5 t' F
[
- g* K' Y" w2 v) m6 D. u/ hif (item j( [credibility] of turtle (i + 1)) != -1)9 I$ V5 m' r! R4 s$ b
;;
判断是否给本turtle的评价质量做出过评价的节点* m( j, c9 _. Y6 n$ {  n2 V
[set note (note + item j ([credibility]of turtle (i + 1))): Z1 k6 `% r3 v. s) j
;;*(exp (-(people - 2)))/(people - 2))]

$ T  x' C' v* n* x' w/ Eset k (k + 1)
) L4 b* P/ n) `' e5 {7 @]
; P0 x  j7 k* fset j (j + 1)
' N( B3 N/ J8 R, F- S, W]( m$ \: X  O5 [
set note (note *(exp (- (1 / k)))/ k)9 t# v0 i- ], ~. k7 Q& s
set credibility-list (replace-item i credibility-list note)2 u$ j/ d5 H( c- x" I, _+ Z
set i (i + 1)9 {! T- t$ b- f! l
]
/ ]7 ?: B( |9 i( ?. G, h4 d. {end+ i" K5 a. u; l
5 E: u! S1 l4 @9 o1 T! P  ^- K
to update-global-reputation-list; K  k  `& J% A- w
let j 0
; d$ C) r1 v) }( ]$ _& owhile[j < people]
# n* u+ {" N  X[
5 n- i( G$ [( X1 a  r5 M/ m* l) blet new 07 {6 R% @1 M* M  F/ e
;;
暂存新的一个全局声誉
  K9 Q% i* C, V) j7 Vlet i 0
0 Q8 G4 H( j3 I$ [let sum-money 02 n9 {( e( K( E6 ]8 ~+ c, p
let credibility-money 0
3 k0 `2 F7 t) g7 M7 _while [i < people]
4 R- g% S+ U% o- J8 v. f[) R9 c3 p% H# o9 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, |: }( U" H7 U5 Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  X3 _5 E5 `8 A: o2 ?) aset i (i + 1)
% A0 \% n5 h5 v  e' B; S2 e]
' \2 w9 U  ?- X8 {# z' P  ?1 llet k 0
1 v& f4 X" @$ i$ s1 B; rlet new1 06 s/ O! K1 u  z  [0 o& Z
while [k < people]
! W, i: q2 J6 `8 B0 [6 ^[" R5 C. ?- m( {7 X
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)2 J" a: |3 T) @7 S
set k (k + 1)
0 _7 C2 G+ z' D  w" t]0 i) G4 k" H& M2 D& \( Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: y5 e/ Z  D/ |3 w1 |, Aset global-reputation-list (replace-item j global-reputation-list new)
/ Z7 q; }) k% [8 p" y. mset j (j + 1)
, O) P9 B" y; o]/ ^8 L: F( B. J/ ^
end$ @) \8 h% F6 o2 o& r

5 J' }6 H9 D' M, v# |8 S4 I' H* X0 }. ~2 U% \- s/ G

9 i: s* W1 }* Q7 t0 }& }% e' ]to get-color
8 b! S' V5 q- J1 Q2 A" m% ^' q/ A( Q9 T3 I% ~, \
set color blue
% L  w; e$ g$ W+ S$ h& R
end) ~' g* A9 Z4 C; A8 [! @! @
# G1 u8 i9 Q' |& W% Q" V
to poll-class6 b- W7 z0 K  Z- |$ a. v. K9 X
end7 B: U. b9 U: ^, F9 b
# S/ C5 A* v1 v" Q; @5 z7 r4 Q
to setup-plot1& o* C# n4 z0 U% _
; j3 |$ Q) j% S# x/ p; t
set-current-plot "Trends-of-Local-reputation"
) A) r! @4 Z) M9 X

" H; }" {2 ?7 e  v) jset-plot-x-range 0 xmax
/ M/ q) |9 k+ T( I6 |( b( x& D
- P  _4 m) L( X5 R& Z
set-plot-y-range 0.0 ymax
; Y8 n5 Y1 V$ j) M& W) t+ c
end
! }: W. I7 G5 _/ K# _) r/ |
" V; A% q7 r  B* ^4 Z3 a1 b  tto setup-plot2. E) b  \2 Q2 ]( G6 h% v' @0 Y  H
/ o, X1 `4 h7 X  l1 X
set-current-plot "Trends-of-global-reputation"
4 u6 E0 B& y& E9 P: F
0 C" L5 ~) l, G2 }( X, `1 O8 n, g4 B
set-plot-x-range 0 xmax

; o& ^! C1 `6 u3 g3 o4 T; W
3 D7 n$ ?( s4 b0 N# I4 rset-plot-y-range 0.0 ymax
, W6 ?3 n  Q/ B2 P
end
/ }6 G" j& P0 c7 M7 x7 o+ _4 w. T" [0 c" k- I
to setup-plot3
0 o5 T4 O" D; u6 X; D! C4 n
7 U: l( f" z- ~. x6 cset-current-plot "Trends-of-credibility"

9 p/ F8 z8 u1 L* f' T9 ?
$ j. v: t( t8 k8 tset-plot-x-range 0 xmax
/ f8 H  o8 L9 b  E9 n

" W6 n) b8 F* n% i* F- s8 Q2 p/ `set-plot-y-range 0.0 ymax

' t: }7 H  M- x, Q& h  U. oend
* U; |( Q* W7 E* e4 T* t
- S/ G; }* W! u9 c/ h' M1 Oto do-plots  \$ J5 j8 v0 l( w. n
set-current-plot "Trends-of-Local-reputation"" Y4 s- w* [0 m( A
set-current-plot-pen "Honest service"
9 w/ @! `: b% k2 C4 T. bend& H/ U% C( j$ C( H' u  e; F3 `
0 E+ t! t  h2 N
[ 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.& y" k1 q) ^) O& u+ e$ N; G

1 X% s. Z: J# ^/ a* z; J. k; `1 [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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