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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:
0 s; E0 H8 A0 f9 R7 ^to do-business
6 _8 B7 M+ q, _. { rt random 360: W( y0 W% a! a0 c: |, i# O: {8 T/ j! i
fd 1
! g6 }& R5 B7 s, k$ }- H4 [ ifelse(other turtles-here != nobody)[) @7 B4 F6 E3 S- e3 e1 a, p$ S, ]6 B
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
7 x+ L  a! b% ~7 M) c! e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 ?9 }% l$ ?1 h# N  d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  _" h# ^+ [6 O
   set [trade-record-one-len] of self length [trade-record-one] of self
! x, E. U- K% J6 ^4 E   set trade-record-current( list (timer) (random money-upper-limit))2 w+ S4 u/ @' J: V
6 ^" k6 a, t7 P+ e( s7 i
问题的提示如下:) K" v# d9 Y7 m3 F8 z" P9 G# X
, d' _# [9 `! h7 {$ R; v) ^0 x
error while turtle 50 running OF in procedure DO-BUSINESS: L/ Z  }  ?1 k: v# V) @
  called by procedure GO5 s0 v( c5 I( B" t+ H
OF expected input to be a turtle agentset or turtle but got NOBODY instead., |" E9 O5 J- e. H' S2 M' X
(halted running of go)6 N' ?7 F, G3 T

* U) E. k3 H' h7 b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~~
! d# T" R+ P# O) e' ^9 E1 ?7 t3 ^# }9 s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/ y  y" D: m# d5 Q
globals[& }3 U: R* C  U" d) f- S9 ^
xmax
* m; |; d: J; T" M5 V. {, o! ], e; ^4 oymax
0 J$ U0 Y$ x. Q, k- Xglobal-reputation-list
. c9 F: m% f8 }. ]2 f+ N. K5 p8 S- W+ B
;;
每一个turtle的全局声誉都存在此LIST
) N7 M- h! B& Dcredibility-list
  j7 }# |( |8 J;;
每一个turtle的评价可信度! X- b6 s" l7 Y- a  V
honest-service! G8 a8 H' u- X8 ~/ j2 t
unhonest-service
6 Q7 s" R/ ?- [! Woscillation5 v0 W# ~* D& n! s+ z' Q6 O
rand-dynamic2 j% P& y  P+ b6 l2 F6 s4 A/ j
]
5 H; y3 D9 a2 k: y# r9 o/ x5 J
8 J8 E) Q0 S3 ^% ~4 \turtles-own[% @/ O3 O4 m1 w0 M! j8 h
trade-record-all
: b7 c- }% C5 L;;a list of lists,
trade-record-one组成
9 X+ B+ v/ V3 i, m& R: o) [9 Ctrade-record-one3 b& p2 `0 W9 s, J9 ^
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; l( Z# \2 B8 j) f/ t* W

0 J1 g5 U, e* f" T" {$ ^;;[
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]]4 k/ d4 z& {) O! _7 z
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]) S/ W' z& B* s) d9 g
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list8 T, F) m* b" K- M. P
neighbor-total/ r" W. |2 W; j
;;
记录该turtle的邻居节点的数目
; m0 \) _8 ~, J1 v; l4 l2 Ntrade-time
, ^& r; ]1 z8 O0 r( e( x% E;;
当前发生交易的turtle的交易时间- a1 n2 o( I% r- r5 x) g+ _
appraise-give$ H2 u; w! O$ W9 H. C/ H; d) [9 s
;;
当前发生交易时给出的评价
' @: O; F' P+ a+ d: o6 [appraise-receive2 \5 A  I, x1 G5 @; E
;;
当前发生交易时收到的评价
. f# h. e" }8 lappraise-time
% M0 q. v8 L8 Y* t8 ?- w) ^;;
当前发生交易时的评价时间
' K8 D: K$ w: O: G: |* Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# e- [. r8 O* W
trade-times-total
" y6 P# x9 L+ t: L6 H;;
与当前turtle的交易总次数% a& z4 r9 u3 I% Z' l
trade-money-total
( E' k7 h& v! Q0 X3 `/ t;;
与当前turtle的交易总金额  U0 L, Y6 s0 u( A( ~% U1 X
local-reputation
. k: w9 k: e1 Gglobal-reputation
: x& Z- O/ e+ q" \credibility- `( l3 W4 @" g  j! r! u
;;
评价可信度,每次交易后都需要更新
0 `* w7 H- \0 t! c$ r: T) U6 ~credibility-all+ |# m: `, P# D
;;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! }" J2 y7 _+ z+ C4 L$ M

' v3 S0 l- h6 ~$ 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. A  u2 q5 q4 V) N4 Y
credibility-one, G7 x: [; O1 P# v
;;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& E# W  ?& c# T/ C) F) K( L' k
global-proportion
1 e( r" z) [8 [8 K! \- scustomer
& R( v  l5 b' u% K1 [customer-no! u& u) G4 e; B9 O
trust-ok
$ n9 d* |5 G" }9 _' vtrade-record-one-len;;trade-record-one的长度- _# `; Y! h- V6 S& p0 K
]
  H; ]$ D! v# E7 |4 C$ g+ X* B4 k6 d
;;setup procedure
% R$ k  O' y5 {2 A/ H
: p  e4 W: {0 ]) A! u/ r& y$ ]to setup
2 g7 v1 X  J1 S+ ?4 f) w0 I0 O4 }$ O0 ]8 _( J( q! R& H$ {) l1 m
ca
( ~" ]. R' t+ S; z
; y. }' @3 W7 ^, W' D: C& `
initialize-settings
' b+ c7 E6 t; A5 z9 l
  L0 O0 w6 Y) {' ]) ]& G. B2 n- Q
crt people [setup-turtles]
: @% P5 D. N, k0 o

8 a" r! |7 b0 ?+ u9 lreset-timer

7 i% Y, U- d  H1 p! ^) m
5 C' r+ H" d0 lpoll-class
" E0 ^: x% F4 _% m6 q8 s" C! E6 {

: v& v8 K8 X0 M$ y; I6 ~setup-plots
1 w7 D4 c2 _7 W  i5 I+ p5 q
. U& C- F% Y* L2 Y' H0 f
do-plots

4 P1 `. ?! t5 x- }/ o/ Yend, D) w7 @1 z1 m8 a
8 |* ~$ |$ J6 Z' @/ Q
to initialize-settings* K- @4 [5 a% h( j/ Y

+ g) _( X# ]: _" f3 t2 Iset global-reputation-list []
3 a8 D( z1 ~* }5 N
: f; {- V: e: j8 Y9 k  [9 U
set credibility-list n-values people [0.5]

4 ?% o/ R) N& ?" @1 w) a# ~+ o, `3 d, ], E! U0 z
set honest-service 0
5 \* v9 l1 C; n, L3 r% Q
: f; N' @: [- ]- ]! ~8 X
set unhonest-service 0
( o! d4 Q/ e' S( d% u6 D# ?+ x# h
6 |9 Y) {' {9 G1 _
set oscillation 0
+ o! c8 Y+ \; A) F# i* G8 _
/ C, F, _) W+ c: J8 ~
set rand-dynamic 0
( v9 O0 Z9 q# L% e1 U3 P$ M
end1 W1 |, B' K; G2 }" ]
# E) w% f% {6 o3 O: K0 g9 W6 F
to setup-turtles   F0 A, w. L) L- s  z
set shape "person"0 Q3 q& D6 h/ V( x" _. l
setxy random-xcor random-ycor
% d  q! _+ W8 f9 Kset trade-record-one []
/ q, a( m  ~, E; l
0 |- L0 e  E% m& N# Y6 _$ m1 F
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ ?* K" Y& |( X# O' ?

4 E4 {) d# o. Rset trade-record-current []
: r/ p: B. T8 C1 Sset credibility-receive []
9 ]: y; h. s. r& Mset local-reputation 0.5
: ~! s+ _8 Y. x% ~; \7 b: pset neighbor-total 0
) K4 j5 I5 O$ d+ ^+ X* N2 o# qset trade-times-total 02 e; d9 f3 M# z
set trade-money-total 0# c* @2 d( }2 U, ~: E6 Y! C8 X
set customer nobody! {; I$ L1 i6 I8 p: w! Z
set credibility-all n-values people [creat-credibility]
, L# y  y) ?, F+ R1 ]$ Cset credibility n-values people [-1]% Z0 V: _+ L$ x6 k1 a
get-color! k3 y0 F4 J1 G6 b. h7 P- L5 F( ~# c
) R# F) Z) b. B& O; @4 L
end
7 E6 Y& U/ V3 N( i7 U! Q0 w/ {
" ]0 @. _) `& D- _( eto-report creat-credibility' F# @* A* h9 G/ x* m0 h
report n-values people [0.5]
" H$ I3 y$ D, C* pend' @( q: t6 K$ ^# O8 [: ^

( ]: R; X. ?9 |- d' E7 qto setup-plots
& L0 ]$ a: X" i1 {! Z5 p. C5 A: f1 C+ Q, k
set xmax 30
* W0 Y, K7 B& R9 L9 c" Q: _$ V( g

" I* j( r: S+ D4 R7 Kset ymax 1.0

. n1 ^! F3 x1 K# F3 ]2 c( K
6 ^- z' G" `* U* x$ A+ j- |clear-all-plots

7 q  W' W& D9 w: M) T- O6 O6 J0 \* {: q5 K! d+ u! s
setup-plot1

. T5 ]2 _- b0 N' b; H  b7 k2 D4 `8 |1 }' U2 U+ p
setup-plot2

9 S7 @7 _0 v; e& B, F" O2 I( a- R+ t( k
setup-plot3
3 ~1 G) g( r+ f- R
end- P4 j" A% {+ ~' J

; ^7 d" o, H2 I# M, o! t;;run time procedures5 U. I8 X5 W6 }4 D8 y. \) t

1 ?8 L4 y& \6 X; wto go
$ w7 h: N' i- @& B/ V: G; G- E& q( J- _3 g3 ], \, m
ask turtles [do-business]
# H9 t4 j( P* r. K9 ^
end
9 L/ @" v; C) f. m3 h9 u8 Y  @0 z! x: {0 J- b7 h4 U4 C1 z, w. n
to do-business
1 U: x+ c7 `) L8 R

/ F% P' D  {6 Z+ C; p9 {& Q
8 v, ~: ?! f. V8 vrt random 360

) N% L4 S8 W% @; ]$ i
8 O5 Z7 }, `* v9 Cfd 1

  q1 r0 X9 S$ e7 P) @8 |# a
9 L% `, E+ c% k' J' n5 Q2 [5 iifelse(other turtles-here != nobody)[

3 J- h9 Y! L: r# B# L7 l4 k) V) X
set customer one-of other turtles-here

2 G9 K2 G% w6 ~5 p
) d! ?4 q1 S: K5 V;; set [customer] of customer myself
' ~% P3 c( v# C( _2 {; ?# w

3 l% S2 |) q6 o( bset [trade-record-one] of self item (([who] of customer) - 1)' L" Q0 z$ i7 h. f
[trade-record-all]of self0 Q' w6 M, v& R5 F9 `1 J
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: I5 p) T% a& l: F

5 Z" n: j" x) m$ j7 \0 n- ?set [trade-record-one] of customer item (([who] of self) - 1)
9 Y1 k' q8 z1 ?+ r4 Z! c. V[trade-record-all]of customer
4 o& `9 s& ]( \# q( m0 `
1 }4 N6 \" [$ C' W3 X" x' S* ?
set [trade-record-one-len] of self length [trade-record-one] of self

  A% S9 h# V9 D8 D% j6 r6 z4 H) J; V/ m" y7 E. U: i0 ^( \
set trade-record-current( list (timer) (random money-upper-limit))
' F0 d5 @& @; R
5 r$ ?( E$ C( J
ask self [do-trust]
6 S8 {' I& g5 Q) r1 Z5 };;
先求ij的信任度
' V' F3 p) Y# u9 [/ R/ E' V
+ R! V9 P: v3 N9 Qif ([trust-ok] of self)* {- C: A! c( x$ I4 W  l0 R. |
;;
根据ij的信任度来决定是否与j进行交易[  X+ D8 @& m7 @+ Q$ L* T. F9 l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) c5 g7 }! B- R: g
( B" G, C9 v, Y- Q# S: Z! ?
[

& t7 T" ~7 f# ^& E3 g: C! X0 e3 b9 h- F6 v/ K5 U! V- O4 N
do-trade
! c" p9 v7 S/ H! r" b  g8 y

' n0 e/ P) \5 P+ @9 Y9 H1 xupdate-credibility-ijl
3 [7 W- Y# c: g9 b$ d
( f" l3 V2 s9 I9 j' h% j
update-credibility-list
, Q/ i' Y4 \- S

) M- r: j+ {( j) a0 e  N
! @4 Y" f' j! w2 Zupdate-global-reputation-list

1 ?  V2 e. {2 [3 l
! t5 a! K1 P6 o1 V; F5 q& v0 Npoll-class
  `2 f- A  e( `8 @* N0 Q

; b7 L; M: a& F& K0 c/ uget-color

! d; M1 R$ P) l- O/ A: _4 u$ i. C- Z" B5 D  k
]]
  v" ]2 @' l& q6 Z& f7 J: v. ~4 _% w- F7 r8 Q
;;
如果所得的信任度满足条件,则进行交易. M) k/ Q3 |. v# a6 g  l1 Z! S% `6 a

. z% A0 W2 e  P[
$ X8 `; j" J; r+ L' ?/ l

0 w$ q! t) f- \  W$ e: qrt random 360

% p' V# V" P% Q: v
# R+ O" x6 p" l, g) efd 1

9 P- b: I% N3 Q2 a4 T; j  c+ `" h9 x/ w+ H
]

: s3 z: \! f% p& C% c- y4 ]( h7 w, B, L, {& g
end

% R, i0 a0 R* J+ q" k& K
/ \1 O7 J8 \) x& y, n2 c+ F' J3 O, Tto do-trust 0 S! Y* }3 b5 t1 Y5 v
set trust-ok False, j' j9 N& i# Y6 |- n# }
& u% ^: x% Y0 H; r; c2 L" c! |5 `- Q

. ?# x' C9 d: e2 `let max-trade-times 01 l# ?, n$ p+ Z6 d8 ^+ V2 B8 E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. }" O/ }# N6 V) I
let max-trade-money 0
" e* P1 h; O+ S$ dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* x, d0 n, o5 o4 U1 Q; {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# o* Z1 j, ?6 X5 i% R
' B$ ?' k/ V2 p* ?
" W7 a1 R. y" C1 o. _9 U
get-global-proportion
4 b, a/ J- {0 g) J/ p7 Llet trust-value# n& h- e- v2 H4 d  [& w. K
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)
. r* t; Z- e' |, [% O) e, |
if(trust-value > trade-trust-value)
8 E" T! R9 a. D7 w[set trust-ok true]. u. h. L, s) \3 D( m* d" \
end
$ j: ]% P: V# F4 Z5 w+ S# w1 r' t5 k# U' J
to get-global-proportion0 \" p2 h' l3 P! ], o  Y7 m4 j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 L6 M) X" w' R8 v4 x$ F5 R% L
[set global-proportion 0]
/ M4 v; M* {: z, l( b/ o[let i 0  ^& I# E) X8 ~! Y9 n  ?  w
let sum-money 0
* n- P6 _% @! W8 A1 D3 @while[ i < people]: N# ?2 `# E, T. s
[6 R5 y, Y  E  D3 U
if( length (item i  I9 r( m1 J0 Z0 X( [/ _
[trade-record-all] of customer) > 3 )
& [! \' ~# O9 y& {$ ^
[
0 E- K0 L- _& W" Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 z8 N' z, T; i% _5 f# S: |/ i]
% v6 C: ]: ?" l) a]
( ]7 k7 B) u; S, _6 r8 Plet j 0
+ y- ^$ Q1 w" Xlet note 0, h  R( G$ Y7 ~  R
while[ j < people]
" b. b( H; }9 {; [' s- F1 D[1 V& u& ]  c% T/ C; L/ s
if( length (item i
5 u/ W; q. Y5 Y- h* V+ ^7 u- w9 T[trade-record-all] of customer) > 3 )
3 T1 _" y2 G9 m7 N+ K
[, n$ t; E8 Q: r4 F9 o" {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ X( N: U% q. M/ \: V; G. I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, K7 r7 u4 k; n[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 B' r, W/ Q" @9 x3 w; C. u
]  c1 e6 E+ t% ~- A/ O& C
]
" B, e: A' J3 @/ xset global-proportion note; t4 `* C, f6 N
]
( Y* L* x. S; [( Bend2 S1 P# p1 T1 f* q
/ H% p% l6 \& a( n0 e
to do-trade
/ T; J, {4 N$ ?2 y  H" y. B;;
这个过程实际上是给双方作出评价的过程8 m2 _0 g* |% G( v  y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& U& k* J# ]% [' b$ V- Z2 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' Y9 K, {7 @* q6 cset trade-record-current lput(timer) trade-record-current
2 z& @0 t# Y) g# Z" };;
评价时间
4 i2 Q7 ^  X  Y; o' Rask myself [
) q% _- a$ y4 Y% J: d$ z- v" F0 Dupdate-local-reputation0 ^2 Q9 O" V- F( b( T) n  _
set trade-record-current lput([local-reputation] of myself) trade-record-current
; j# ]& f8 k- M]
7 r% n7 i) [! _" e5 j5 Eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 \+ g2 {  F/ Q) v7 |/ F;;
将此次交易的记录加入到trade-record-one% [* a$ x5 A, b) w; }) ?( n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 }7 Z* K  O! x1 l! |. R% ?& [: x
let note (item 2 trade-record-current )' ^/ Y5 g! L6 [" ]- |  w( d. d( V
set trade-record-current
6 r( B, q# e# w" |( m. A(replace-item 2 trade-record-current (item 3 trade-record-current))
+ V, ^# v' ~6 Y8 ]% w# f) S3 T! e: @6 {
set trade-record-current
( j: }  {) n+ W: E# g. A" q0 z, ?(replace-item 3 trade-record-current note), K" d- x8 Q2 W1 p0 @+ \: ?2 K+ K) _& _
8 ^- p4 V$ z% {2 Y0 \$ E

" t) {6 }- `# x; P6 S" N, p& p: C  w- Hask customer [
+ k% C, g1 F5 o3 Z$ Q$ Yupdate-local-reputation
9 q5 i9 ^$ |9 d( K# rset trade-record-current0 F6 s: ?4 \) `1 b0 z! d0 Y. y! D- N' o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 i. c2 I7 Y; _* U6 N7 k
]
" O4 E. V  L( }" R
- `8 ]4 W& v( j: ^6 [

# E3 G' l9 N6 H( _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  I8 {4 V% U- O3 @  U
; y. J- V0 e- b1 u. w7 D6 Y0 _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) x' X: R; ~0 [4 p1 Q3 V- d
;;
将此次交易的记录加入到customertrade-record-all
1 u8 O% Y  t' u4 I( ?' ]end* m1 h9 H, W# m6 u. x$ Q# p
! j' P+ S$ d8 N% m
to update-local-reputation$ z# w" c% u. J1 n1 }& X+ _9 `, V  x
set [trade-record-one-len] of myself length [trade-record-one] of myself( `: s9 A# C9 ~! g

  [# U4 K: k" M* [* O# S9 e3 B5 y. o! `2 _8 ^
;;if [trade-record-one-len] of myself > 3
/ \# w8 N0 H9 _" \
update-neighbor-total% B7 t4 z1 b1 i+ N! d1 e. N$ M
;;
更新邻居节点的数目,在此进行
* o: E, F# R. f" nlet i 3, f% l0 z% M* L* M! v4 _
let sum-time 0
: I* s; W3 N6 p: y# i4 swhile[i < [trade-record-one-len] of myself]% d$ B8 ]5 ~9 s9 j( @
[, G+ l% s, n4 S* {# n5 ~/ E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ U4 [) Y7 Q; m' y
set i$ g# C2 A7 t0 E; H
( i + 1)

- D$ D# Q! d5 i1 a]* c& j( d; H+ c) |* a3 G1 \" _
let j 3
9 B/ i$ X* [* x/ Z  c+ V" k, plet sum-money 0
: N) R% A( b- Z( Fwhile[j < [trade-record-one-len] of myself]* ]" b; l0 G3 i* y
[
; F# L! N% k9 V: hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# z% E' G$ ]7 @- ~' i: [4 Pset j9 V  E  Z: M) @$ h1 D
( j + 1)
/ B! ~* m) F, i# P3 Y. b' x
]
: V+ i& q! F( X( H$ j1 u, Blet k 3
# c, Z- u+ p2 \7 j) Tlet power 0
/ {# X# r* L7 {- c. w- Ilet local 0
, M! I# I, ?% Z' Jwhile [k <[trade-record-one-len] of myself]
" ~! v. j6 C5 |[
/ G/ X) E+ g" R3 [/ zset 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)
) w3 }# Q5 @; h* Z* z5 jset k (k + 1)0 R4 z- F; G2 L
]5 n0 i0 w+ Y# {7 U
set [local-reputation] of myself (local)" U( m. z6 I6 w! R/ G
end
$ f$ y- a: [, V$ `, t9 i3 w$ B
2 n% V: r& g0 lto update-neighbor-total8 D2 c5 i; S, a

' o# m. l  {! r/ {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ c2 h; }- c  q) W1 I, c# w- J1 w7 A" e: ]( G0 A- @
3 R& i% Q' U& b$ ?/ Z) q, ]
end" |7 P# k7 n' \0 B+ e1 N- X

; @" ~% q0 E1 ]to update-credibility-ijl 5 f5 G0 D/ h/ {# {
& M3 ]! W2 p/ o' n  v% w. u. w1 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。0 l6 }/ i( A3 _7 V# K& l: e/ M
let l 0/ @; t1 c/ a/ ]- m& o
while[ l < people ]$ q9 d' ]( ^0 f* e
;;
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
* ^8 K4 c5 @9 Z$ {6 u7 D[
& A1 S& U# g" ]% Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 i" O1 t. t0 h6 E
if (trade-record-one-j-l-len > 3)
: L* ^5 F9 J6 k  |1 B9 R; O3 k  b[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-one2 ^. h0 C9 |% d% Y0 X& C7 l
let i 3
3 T, s* ?  @0 u! t3 o# Hlet sum-time 0
: _5 `; t7 j5 B5 W: _8 ]while[i < trade-record-one-len]7 N, e/ E6 S" j' v) X1 H" J
[
. y: }; b1 L- B0 D1 [  eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) S, j. g  m9 Y  A# S" B* l6 ?set i
3 g5 o5 f( u5 W+ _( t( i + 1)
) e: u1 f7 x( W, j/ T# |
]/ k" j) }( P6 o. u( }+ K! @/ x7 T
let credibility-i-j-l 0
- u# i, X3 Y" o$ y3 W; L;;i
评价(jjl的评价)
# a% G! I1 T7 y1 P' b* B$ c2 j9 blet j 3
, H) o4 u6 q6 c/ Z5 W2 P, Tlet k 4
$ w1 B- f# M2 }1 k$ p) _, j- c+ uwhile[j < trade-record-one-len]
/ g0 m0 ]/ F* b1 a' }[& e3 p) j% ?6 O& A9 b7 d- @
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
* C. h2 w9 @  M0 }9 K: 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)
) Z5 ^4 g/ z, F& vset j8 e: @% ?/ |; y" C9 Q; t0 L$ g
( j + 1)

* z4 ?3 k9 K' F2 f]! h( r5 g0 E* m# g. U$ w+ W3 |
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 ))4 [" @) o$ j  s5 f% v) ?! d

: f- q% n- H: l  J4 \9 V5 W

6 ~$ P4 V, B* A( W3 d0 c, wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 K7 p9 E! a& |$ D;;
及时更新il的评价质量的评价; D4 }& L$ S' h1 \* V/ s6 p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 m6 t- c7 e, ~set l (l + 1)
$ \9 f7 L+ A% v" j% g]
  E0 t- ]3 P4 C7 L3 b, A* Qend* ~& Z8 ]! t" j* m9 x
7 T4 r4 v4 |) z; E4 I
to update-credibility-list
" V. g: [! m5 plet i 0! @3 f: O0 b* ^2 }& h* k+ g
while[i < people]
- n9 H6 m* V/ j' ^) u[
* `) A$ p# c! n6 ~9 ^' U( p' wlet j 0
1 }. \: o7 _' b/ v+ V! y- O' Flet note 0) I5 c  C8 @3 y8 N) X# Q
let k 05 V1 u: F3 V; U0 |5 K4 o
;;
计作出过评价的邻居节点的数目$ o6 Y: v$ M+ [- L
while[j < people]8 a# A5 x# o* U5 G
[
1 ^. E. a4 F" O+ wif (item j( [credibility] of turtle (i + 1)) != -1)
! @7 o% |. }9 Q7 [1 p;;
判断是否给本turtle的评价质量做出过评价的节点
: |1 }9 r. R- L* t  Z& E[set note (note + item j ([credibility]of turtle (i + 1)))5 \% K' A$ F) c' @
;;*(exp (-(people - 2)))/(people - 2))]
  r* \/ C! L& x" c: }
set k (k + 1), H3 x# N& N( `' ~
]4 N2 ^: g" Q$ X& @& V2 ]% |! d
set j (j + 1)
9 z6 P# E$ X) ~' e3 L; k]
" n' F# |. F$ U* Z  d) i! {$ G9 {set note (note *(exp (- (1 / k)))/ k)
& `3 B4 y, v0 W: ?0 L3 eset credibility-list (replace-item i credibility-list note)
- y7 O7 C' `# X- h0 K$ B  X, j/ Aset i (i + 1)8 @* z8 q1 ?( I/ q- A! ?% B
]
8 e' N0 o" s/ q1 w% v5 Aend
: v6 P, _! v9 M& C+ y. O' N* m9 u4 k, i) \
to update-global-reputation-list
+ {5 v5 I, _/ M) [( o* ^let j 0
% [# E- y. E& |! i! m1 rwhile[j < people], x- G# f1 f' |# C
[
! W; x9 R( Y) z+ vlet new 0
* E: {( G5 f, F5 i;;
暂存新的一个全局声誉
" x, D9 q6 F# o. C; [- y& w( ^let i 0: @  `' B2 |4 o( c4 ^) e: B
let sum-money 02 B* N5 f- J( k/ ^  p& j  w
let credibility-money 0- g5 k% w$ b  l4 O6 |
while [i < people]9 E6 f: h. S* Z2 G* T
[! s# ]  D, d/ [9 v. i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 W" ]# N/ R% E7 Nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. d2 u  `  b. t; Jset i (i + 1)+ m# p, W& H$ {( _  X3 |6 Y, S* p6 r
]
7 I" l( x! C! _2 p! Ylet k 05 @* h( R4 w  c8 i; `
let new1 0
8 w5 n/ |( l4 l+ M9 e. Uwhile [k < people]( Q' ?2 D) {1 g* d2 x$ f' {7 E% G) f7 F
[
( Q  n: w' |/ K5 ^# 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)
" h: u4 k1 K! {8 x4 U. n# h8 T9 }. ?9 f, Nset k (k + 1)) t, {2 }! o, L" J% e- f4 L
]
& Q5 `, H; ]8 q5 Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; _; F. y" m7 X7 s/ S; j' D" h
set global-reputation-list (replace-item j global-reputation-list new)
3 X8 l* i3 n: Bset j (j + 1)
9 A0 b8 ?/ V+ [9 B& s2 r' f$ Q]6 Q! z9 x1 {+ a, V6 K
end
) h' X8 `+ t4 {" e3 g7 S7 r2 X) K9 A* E) w* H7 B
! T& C. K4 Q$ }5 Y* Z% `8 o) z/ u9 c

7 X- z+ W' L$ T6 G- w- ]1 ?to get-color
# K7 |, q5 X  _& V, g  ^2 T
1 M6 d0 |  i: s4 a$ ]set color blue
$ X6 Q5 I: H: a4 K
end1 \& C8 H3 _) B7 u2 S
& d' q7 ~! v& q, [! `) E
to poll-class
4 i4 D0 ?# p- m* eend
( j+ R' \: |) P
3 M1 P) t% R4 g" E4 `+ |to setup-plot13 M. N& `( O' ~# Z) K( w2 A& o+ E

8 K% u! z  J* E/ |6 ^: Zset-current-plot "Trends-of-Local-reputation"
( M: m& z" W8 j4 p) e

" b. K3 h: q# p1 j3 s9 Jset-plot-x-range 0 xmax
2 y" M0 z: y6 P; r5 ]

: R! |& f- n* h6 [set-plot-y-range 0.0 ymax
- Q+ R% s2 T: X; R* f
end; i: \2 P3 H( o9 }4 v

2 Z$ L% Y( a# d2 s1 v# S* E% _8 Wto setup-plot2
2 t" r3 j0 j3 y3 F' j4 n" N& |0 G2 Y: l+ t/ x( u& N0 I* D- R
set-current-plot "Trends-of-global-reputation"
% T7 F3 p, o0 {- Y
2 R, |* j! _8 g
set-plot-x-range 0 xmax

/ X, |! c/ {/ k9 Q1 T  I2 |' g  \5 r
set-plot-y-range 0.0 ymax

* h. W4 X6 p- `. e- Y/ N! Mend
3 F" ?3 ], ]! ^& V/ _% K+ o& U2 T) ~7 {
to setup-plot37 H: S: W# I% {0 z7 T+ o
$ M2 u8 l' H9 y- f; q, c9 h
set-current-plot "Trends-of-credibility"
$ }4 O( T+ f: f( l0 ]% k

. _! J6 M, ~6 E9 Hset-plot-x-range 0 xmax

& L" X& G) \: m0 L+ J% T: V0 @6 A; l
set-plot-y-range 0.0 ymax
/ ]5 d. b! z$ T
end$ \+ f/ N3 `* J6 s2 C4 B3 h% G
1 S8 ?4 F8 U2 F0 x+ i8 _
to do-plots$ Z, s4 y8 q8 B& X
set-current-plot "Trends-of-Local-reputation"
0 k# v0 B, s+ x. V8 ]9 @set-current-plot-pen "Honest service"
- J2 o1 C* P: F9 f: T- vend6 K" w0 c4 @" [4 F, @" c5 A8 X
/ D4 N$ [% ^0 S- A& `8 g$ v
[ 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.8 t- h3 F$ X2 Z) ?; H7 Z0 l
9 Z. ~& H) h4 P/ I. }* J
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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