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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:
% j. V' H( \3 @to do-business
- K1 E& u) K: g+ ?7 x4 H7 _ rt random 360
) P# [" z, U  h. ~# r! j* O fd 1- g: E. h$ n) |* z: X: P1 q+ b
ifelse(other turtles-here != nobody)[' z1 J' }. y' p/ m8 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.
. L1 j% W$ n, j7 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: B4 P8 X' Q- O3 |' j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, I! z' `9 w+ G0 k* \6 Q/ h
   set [trade-record-one-len] of self length [trade-record-one] of self! D% p4 g2 b6 B/ C4 g5 U) `
   set trade-record-current( list (timer) (random money-upper-limit)); z! w# X% i- @, y/ v4 L

* L% ^8 S' Z3 _$ T, v! Q问题的提示如下:" M, H# C& T7 G; G! T) k1 M1 I( q
6 F! Y1 s( H0 I0 L
error while turtle 50 running OF in procedure DO-BUSINESS2 ?" F& d9 F# u" x0 d
  called by procedure GO4 A# Z: R1 o1 c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" g! A( z9 z8 ]+ ~. ]9 o4 X9 |6 o' q
(halted running of go)
) X/ r% o1 h* k5 S* e
7 w8 z. B2 D$ {$ ]7 H$ ^! i  C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~~; A, v* \- a% [# 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6 @( C) V$ V% r' e+ `+ Y
globals[
; @! Z. j7 D6 \  j) Cxmax) v. |" S7 _3 e  M1 g
ymax9 _0 r0 r8 A6 _0 G5 q* _* m
global-reputation-list* n# T. M) h4 t$ v
9 P0 f# d8 \' z& l6 X
;;
每一个turtle的全局声誉都存在此LIST
. h% }# [0 t. ^' H# p$ v# Fcredibility-list
' g' G5 I8 L" A0 X2 s$ ?;;
每一个turtle的评价可信度
( U% H: D7 ?9 f8 M1 {/ ]honest-service
/ `$ l+ g5 ?0 i* Q9 Y% y0 @8 lunhonest-service+ R% t9 F4 N% w$ ^6 X" x
oscillation
) A# K7 |. D% z" `; ?& Vrand-dynamic
+ r" s. E" z" }- A2 K' G4 w8 l]/ l* n  [  B+ P( B' C

4 b' b' W5 ]) ?0 ~& ]turtles-own[0 h6 }/ C. O& z6 l( f0 Y' x! u
trade-record-all2 u, D" J) m' Z. e5 J
;;a list of lists,
trade-record-one组成
( ]: C# c. \6 K( @0 W/ `trade-record-one
5 K6 a. c# ^* d; p;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 X: _  A3 @7 v$ A; R1 {) c9 }9 j8 x" r
;;[
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]]
. F$ r/ ^2 \2 S  a) P& ptrade-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]
+ N7 K! r( g7 {/ k0 M" y0 ^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) J% o, Q$ ^' V/ C; c% T5 E7 Z
neighbor-total
' g9 l/ A+ e: r;;
记录该turtle的邻居节点的数目
2 i4 m) ~- Y$ q9 S) h# Otrade-time
3 G* F8 q' S& D7 {;;
当前发生交易的turtle的交易时间( ^! n- I8 k6 n: j0 b  D
appraise-give
" h$ r/ o+ E3 ]7 A2 g, w;;
当前发生交易时给出的评价" L3 c: a" o; p* w
appraise-receive' i1 F- ]9 L5 {2 Q& d$ g& k
;;
当前发生交易时收到的评价9 G5 [6 a; R. n" M6 `
appraise-time
! \8 Q- k  V; C( I;;
当前发生交易时的评价时间
# I: A' a% P, z- B4 Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 r, ~8 d! P7 }3 `trade-times-total
4 c$ `2 ?# D; }: e;;
与当前turtle的交易总次数
- s8 k; J4 K3 h  v: e0 }trade-money-total8 o8 ^) u" S. |- y7 K
;;
与当前turtle的交易总金额( y5 |5 [2 o7 R0 B) \' g5 N
local-reputation
# I' G9 q9 F% f3 L( c5 W0 y* G9 Rglobal-reputation
9 `' n1 i6 ^5 J" {credibility, y! b% ]& A3 q# D( V8 v  I
;;
评价可信度,每次交易后都需要更新* P. }  _3 V! E) D- `7 i
credibility-all$ ?% z+ E7 W( W
;;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8 G3 t! r8 |" E+ q" t

3 P9 `5 V: s) J1 R2 F- X;;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* z: S( V" U2 pcredibility-one$ j( c0 [; k) V+ z! Z" M! x
;;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people2 b5 D* E  Q. k/ X9 `
global-proportion! j8 W0 _' l) `$ `
customer" |# ~5 U0 Q. C! X; ?5 s
customer-no% ?7 O( R- `; A. H
trust-ok
4 B$ S  m: ?3 m: z  h4 htrade-record-one-len;;trade-record-one的长度
8 {4 P  g- J0 t9 Z7 O6 B]
: r; ]* K9 o, P% ]5 y8 @7 e% t- M0 _7 C; s8 j& k, f5 y; B0 J
;;setup procedure4 N  [! {# f$ e$ A" M

* h6 g- V9 e- T$ t  Y& Wto setup
& Y: C3 R3 V7 [% ?
6 {/ I4 o( }( ]# fca
/ }% ?9 Z+ N0 w" a: D

% B4 {/ |3 G- Z* |initialize-settings
# ?1 a1 l. s& j) g3 g2 e
: d' ^8 T$ C. v6 K) l) y8 R
crt people [setup-turtles]
: G  j) p  {$ p
6 P# [5 Q% D8 m1 F/ A- {
reset-timer
/ i8 P! }# l* i" {2 l) ^

5 }6 `; M- D' E. Bpoll-class

3 S2 c) p$ \/ n7 D8 ^. N
+ T  U7 k4 @% r8 t2 O* Dsetup-plots

& E# E! n2 T6 ~: k+ `
/ m0 i: F& _6 E% r% Mdo-plots

7 N$ Z& w& R. a6 B% {  n$ tend' S! R: E1 J* n3 N3 w) f) K- n; _

2 s$ G0 C# B9 L) Rto initialize-settings3 i, ]) f- B! S( x" k6 V5 A
0 x# I8 A) x$ B  l- C/ B5 j
set global-reputation-list []

  D/ l$ m  N- ]" q
- k" h- L: j2 d  ^/ U% Hset credibility-list n-values people [0.5]

2 U& u7 e5 O. z* i9 k% \2 F: V3 Y7 _: Y" ]. z1 i
set honest-service 0

3 k7 ]' `0 X9 Y8 O# Z
2 H. H& K4 D+ I% K: ^8 V. Xset unhonest-service 0

3 k9 I8 s5 E2 `! H* M2 s. l' H2 f
set oscillation 0

# ?5 q! U  O* z( y$ p
2 O& g/ |+ ~' `4 y/ l, ^set rand-dynamic 0

% H& M" U$ q2 {: b' p# ~end7 P# q' `/ K( `
; r3 F; x* o5 ^
to setup-turtles
  `/ `4 g* k) M" B/ b/ Z+ w% Kset shape "person"
( e8 T& I  S! H- U0 U- R) I$ b6 B' F( ]setxy random-xcor random-ycor
0 H2 K. p2 I2 l9 Jset trade-record-one []
; K& G3 _) r( N3 M
) l9 Z( Y6 k2 ^( E
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 E9 r# r- b8 G
- f5 h# L( |0 P' U: A4 U
set trade-record-current []) M6 ^; X8 a. e" ^
set credibility-receive []
6 E. y% B. `+ Lset local-reputation 0.5
5 U& ?  P2 q! q$ W; `0 z! E0 {. {2 {7 ~set neighbor-total 0
4 _% b; z9 Z0 M8 B1 U' Bset trade-times-total 0
7 i! R* p9 j- Q, wset trade-money-total 05 P& D3 ~1 K8 B) Z) S
set customer nobody
) x6 V& a" O; r, m" }set credibility-all n-values people [creat-credibility]
5 a- Y3 V, \) Cset credibility n-values people [-1]
$ E: Z, n- |" s# T4 ]; o0 h2 P; jget-color
* g" I2 y9 ?8 T

2 u1 n. ]7 r: L9 vend
! a( R0 p- m8 d: N
9 t$ ~! R* j+ U2 `7 Fto-report creat-credibility
$ [; E! W9 e; v5 O  _5 ]report n-values people [0.5]' j: ^$ k6 U/ A% u( w5 T
end1 D/ r/ z5 U; d! n& M

( w, `% H- R: F  o3 b+ |to setup-plots% k0 n% \: p5 d
4 F+ `& ~8 Y( J0 \) c
set xmax 30
# Q0 q. L  k2 I& l6 z4 X

0 {% E% ]# i' [  k7 j* ~set ymax 1.0
( |, J$ C) O6 x3 a1 O3 f
* d9 d( U) R& V' \) I+ t
clear-all-plots

; ?2 L6 L6 J3 U8 J  z+ N! g
/ g& `+ H1 G( x1 D' h! usetup-plot1
7 @9 F/ d/ c1 s/ ~0 s
/ a. N9 _& ?+ y5 M1 e5 f% Z* c* @( B
setup-plot2
, t& \- _6 G/ `2 c7 C

/ A" W+ i7 F/ zsetup-plot3

  h/ S1 R. j* R8 H; o# aend1 m6 K9 m( Y0 |

6 |* L! R% ?# m% a;;run time procedures( Q& }2 T  `1 u/ U( g
8 X3 |6 y/ ^$ x9 B6 h$ P
to go  n& b8 Q) a9 F" C+ S! E9 ], ~
, J1 f- r' N4 j& }/ j
ask turtles [do-business]
: _" U3 ]4 z4 M- S5 c( l# @' _' \: ]
end5 q; ~4 y5 n( n; }7 t. j

0 W& }3 u  z# z. v# ]4 H; W+ pto do-business 8 e( x/ F$ o' j
- j8 e/ R$ @1 h( v) y

: M& E6 `5 ?! t3 z: [2 H  Lrt random 360

6 ]. f  u- V6 c8 X/ @$ l2 b2 R
' u/ F% R) C3 y% Q/ h, qfd 1

6 c% w* r. z) l, }
( B' f) v- U& @6 rifelse(other turtles-here != nobody)[

4 y, B' V+ c( j/ }# N' n
+ x# e) T/ _( ^  _# c/ L% Wset customer one-of other turtles-here
4 e$ {+ Z: g8 u$ S4 k0 ?# A$ C
8 x9 T$ U7 Q' A" H  F
;; set [customer] of customer myself

, ^% P! ^( w2 c* s
9 a( m0 a: {; Q  _& F, B/ Z: _set [trade-record-one] of self item (([who] of customer) - 1)
* j9 m6 W0 S# ~; T7 N[trade-record-all]of self
6 I" Y8 ?( s; W2 [;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ d2 u! I, }( S6 |) `9 Y2 z# z# k
/ ]7 Q3 m# v; H9 A/ e
set [trade-record-one] of customer item (([who] of self) - 1)  t, Y! S: S  N( N
[trade-record-all]of customer
4 W7 U9 Z  ^3 P

6 H% o% t6 e! D) {7 v7 Rset [trade-record-one-len] of self length [trade-record-one] of self

0 A7 Q4 q8 V) v3 Z1 m; d. h. A8 @* _- }5 K2 i  D
set trade-record-current( list (timer) (random money-upper-limit))

; k0 s0 K1 N  j' r1 }; B7 S2 s
% _5 X8 c% u/ ~; s" }5 e( ]: _& O" Sask self [do-trust]! t0 w8 M! d8 D
;;
先求ij的信任度
( \8 S9 W" q' S4 x! Y1 L+ b8 c+ P2 g: ^& p5 D+ Y* F
if ([trust-ok] of self)% ~% o2 c/ {$ ]7 z$ d( d
;;
根据ij的信任度来决定是否与j进行交易[3 z, L' k- ^; U$ L9 e
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 f' K5 y0 M" m$ K2 R

. R) Y9 S1 p+ ?5 b% g* ^9 G" D* |[

3 v% B6 E6 F5 M* q, W$ y/ J, `) h! `
do-trade

) K9 E3 J( W& Y. f
3 z8 D" ^! p6 r0 e6 s2 ~update-credibility-ijl

8 D; e! G( d7 Y- m7 i' F
# |9 \4 Y4 v" iupdate-credibility-list$ E( \8 f: y' T" ^, u
7 ]9 d2 r  p2 Y0 F& K- N  B0 A

8 \% \6 @2 m- Y" G5 H# R6 cupdate-global-reputation-list

+ E4 P# e: b, ]2 p) g& K1 w% K  Z  T  g2 P
poll-class

9 |! l; T5 z  U- z& t! p/ r7 _& F& n: R4 E: z! R
get-color
! c1 J8 j' e6 ]. i

$ `, z6 c0 {. D. s. `]]* [$ U0 A4 G, A0 Y5 d' e( w- U
7 b) X* ~# [6 \& |% F1 o- l/ d
;;
如果所得的信任度满足条件,则进行交易) ?' ^0 }. i9 N

0 j; a  a* q$ a7 O# y3 z[
% @: X5 N- V. F% s0 K9 f4 d$ ~3 U" a3 p) ^

* v# u( u% N* y/ H, _rt random 360

( d) `) H% P8 y( }$ I
* n2 f% C* g& D/ kfd 1
" p+ x1 J0 Z, `) S7 X

! N( K" M$ F( J9 K9 `# X* a]
  C( @# \1 ]. k' c+ v2 |& o$ p$ l8 p
" t5 t  B: Z* g: q5 ^/ K
end
8 m8 j) |; s* y0 W8 l4 p* y

- R# H+ T% I( E( d7 |+ Jto do-trust
5 L+ @& k# K9 j8 w4 T& f* G2 ], Uset trust-ok False$ j6 T* C, _& X+ }! m
, d  H5 u& @4 M! V& a- s* j: Q

" R' X4 R- K1 p) B+ Ilet max-trade-times 03 K0 L( a6 }  r  u
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# }7 s% h! l5 R
let max-trade-money 0
6 w1 V& K* [! k5 f- e! E9 l" Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& R+ F# b, L( N" Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 l# J3 [( j$ k# f& i

* K( _3 `) N* M) `; Q
) Y* [+ g1 Y  [1 x) W
get-global-proportion
& O5 z/ i  ]. r* e4 F8 G, Klet trust-value
0 e8 j6 r' v! e" Z/ m! `5 b! dlocal-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 _; i- w1 E( x! ~8 p& h9 Zif(trust-value > trade-trust-value)
6 I- I) u/ y# L4 }3 D7 r2 t& X[set trust-ok true]
  S! J; x' I, t+ y5 ]% Y5 R9 e2 Pend
) w7 V' @$ _( S9 Z0 B8 T$ T% v' H# o/ q0 C' @5 @$ H9 d3 K
to get-global-proportion1 H6 ^3 }$ A+ p, K7 `9 H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 @! o4 n8 z9 ?# G8 J, G
[set global-proportion 0]) F& A9 G& J/ A- M( `1 x
[let i 0: c2 k/ E# T3 z' i. c
let sum-money 0
( n: _4 C7 ?% `7 i6 |) @9 Ywhile[ i < people]- _0 m" K% ?2 [/ Y! A) x9 V7 l) b, B
[
# X& V5 T2 b0 ~' }+ vif( length (item i0 a+ l# d- G! x: p6 [3 h' `
[trade-record-all] of customer) > 3 )
5 h  U' o2 g4 C
[$ {/ ?! m3 n5 j. t8 k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& ?9 h9 W, V' T
]
3 E9 R! S- l, r# Q* U1 S]: B0 S/ ]* N5 u& r) P" ^( B
let j 0/ ]4 e. q4 n/ z$ t% f- }
let note 0
- n8 }2 B7 O% ?) Zwhile[ j < people]
6 ]/ J6 e) T6 I) l3 T& r+ r[) N1 e+ ?, P# _2 k7 A$ g! i
if( length (item i( |. ~" k* k0 n! R  c
[trade-record-all] of customer) > 3 )
6 j& s: R6 J/ k/ K
[% U6 q, l1 Y) O7 e1 u: D, z# u+ |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ s7 l: n6 K- w: I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 j8 n/ A/ v' @6 H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 z& G9 {/ C0 t9 h
]
0 z8 ?4 }: v- _- y; D4 R0 q]* K7 p( z; K) X
set global-proportion note9 A* w( Y% \3 C3 O: E; m
]
# t# H1 I& `* X; b) Q: jend
% s( F' O2 x4 h1 ^- c1 g( V+ J0 S
* L5 n! u  G8 G7 ]to do-trade
% K4 s4 D# T1 \: B! m* O;;
这个过程实际上是给双方作出评价的过程9 k7 D& W; v& a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 V, d+ q/ \  M" fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, A* i( B- R; E$ U: V
set trade-record-current lput(timer) trade-record-current
" |7 z1 M: z" k! y; C& U6 ];;
评价时间+ n9 H2 h. s' W0 z+ S& p! p2 U
ask myself [* ?; a- _% z+ f( y
update-local-reputation
2 V. m* l, {; f2 ]set trade-record-current lput([local-reputation] of myself) trade-record-current. m4 |- ^2 k/ v4 U" k6 Z# Q1 g3 e+ o
]
& T* c2 O+ W9 X9 R2 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 }) G% p+ M- X9 [% T
;;
将此次交易的记录加入到trade-record-one8 _# n% k1 W$ s% E; A* ]. W! ?% _0 W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' P1 x% c- U2 o9 t: u8 Clet note (item 2 trade-record-current )
6 t) u- v4 [, k, x, n  f  Yset trade-record-current7 l& q9 d3 y  ]. w! w6 b
(replace-item 2 trade-record-current (item 3 trade-record-current))
) K! K5 L* ^4 C$ V1 v. O
set trade-record-current
( h9 I/ W2 I5 G0 ]$ C(replace-item 3 trade-record-current note)% w  P* O0 v8 U

" ?' A4 c* x, u1 W- g) _' F

* V, Q7 B; X% T/ k8 @3 r  a. N4 \2 |ask customer [/ z1 u3 J6 y; b  S5 ]! M
update-local-reputation0 G7 ^, K3 @6 @- |/ a0 [+ L) u
set trade-record-current
8 j  s, o. d6 S0 H# |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* I3 k) Q+ ~' T, O]- s7 H! L- ~9 |# Q# p4 `

0 w# ~2 k- l, Q4 G& t) f+ d
# v0 N* F6 u6 I4 t) z9 p
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ W) R$ C1 z* V

' t7 L& _' W0 E( `/ aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# ]! ?- u% b9 I1 O: C
;;
将此次交易的记录加入到customertrade-record-all
7 e" a. s- ?0 B' b$ j1 Uend
. c# E3 {1 r3 P
8 b2 G7 Y7 Z' N! }1 Yto update-local-reputation
2 z" u+ G3 W2 w7 Q. u6 |% }) t; jset [trade-record-one-len] of myself length [trade-record-one] of myself
  F* a+ O/ L  ^7 }
- X$ V  p! Y) h, ^+ o
6 N* I( q6 l+ i+ J0 t  ~& C;;if [trade-record-one-len] of myself > 3
' r+ I& I  W. q+ G, l4 \
update-neighbor-total
. |2 k8 e: ?0 K# k3 H;;
更新邻居节点的数目,在此进行5 P7 u4 D( c% x8 ^" x4 T
let i 32 M3 `" }& ]" i6 {( d
let sum-time 0
2 C& B6 m7 Q6 u' l1 swhile[i < [trade-record-one-len] of myself]+ p! a7 S5 g9 p+ S5 `+ I* W
[
2 o' l  N1 p2 `! Q! uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; Q! c* ?- X. K& q/ Jset i
- |, k/ `2 X' {- q! ?) Z( i + 1)

# {9 D4 @, A* S' N, ]- B! K9 o]
: ^: y. i: H; @+ Ulet j 3* l6 p' E% x- G) a
let sum-money 0( `" z9 G* r& a& u1 g
while[j < [trade-record-one-len] of myself]
3 q# [( v! E+ }% o5 A[
2 W; z6 @0 Y2 _/ {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): P. a+ S/ m, v6 X8 c* E, ?
set j% P5 u0 Z" }0 ~0 z+ j, p
( j + 1)
/ P) a; H9 L5 U
]- c  V' I4 B7 `& T" M* }
let k 3: k3 N4 _, W  d; K
let power 04 m) v9 N6 e- L" ]7 a/ w! y
let local 0- j. D9 y0 S' J  L/ B" p
while [k <[trade-record-one-len] of myself]
" G+ w% U/ [! k8 c  t( d+ k2 z[
* z+ b2 j+ Z) w$ @7 q3 T$ D( w9 U( eset 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) * h3 s( O4 H7 S& D, d' A+ H* M
set k (k + 1)2 c  a6 g; v+ u! D+ p7 w* c3 x
]/ ]4 S& {1 E% |0 ^! o! v& _) z- ]2 h
set [local-reputation] of myself (local)
& j  X6 ~1 ^- o1 Q; Uend
7 i) U2 J6 Y" a/ `0 n$ M+ O
, [7 @. R, b4 Sto update-neighbor-total
, T/ K- G  @/ C9 p. b/ }' U# Z# ]3 z# @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( y2 N3 N2 D5 u/ n* ~. Y% t  G. P2 n% ~) B4 B" _0 t. k

( q4 i. e0 M  J# Q/ y8 uend
" F, |2 |! b1 J# W1 t( E8 `! E; K) o! i7 y
to update-credibility-ijl
# k3 P* M$ R' @7 O8 |) S; k
$ {! D9 b! Q; G, l7 j0 D;;
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。3 ?4 Q  l' S/ @! m3 \
let l 0
3 x! p1 V& @- K9 n- L& Hwhile[ l < people ]
+ w% D- ]! V6 O3 y. U) f7 D;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
) P6 ?/ W- o5 N/ k[; V; L; N- K7 N6 f0 Z# N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" f% M" E6 O  |& eif (trade-record-one-j-l-len > 3)* G: U3 L, h7 k* y5 Y
[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$ Q1 Q8 u+ R# `+ o1 k" ^# i
let i 3) B9 n; O9 F1 l- [: `
let sum-time 0; f2 o- V9 ?5 P& j# d( D
while[i < trade-record-one-len]; W/ I; [- s4 E" K  H
[6 m$ T4 U1 r: W  a( k" l' N9 {" _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  A/ H2 J1 A" e
set i- N1 R' e' P7 n
( i + 1)

9 n4 Q$ ~# ~7 t. y]% j! b) ~9 ]+ K3 L: S
let credibility-i-j-l 0
" x& m$ @' w8 Y;;i
评价(jjl的评价)% t! [/ v2 p9 G8 f6 E) M7 ?/ Y
let j 3
' |1 Q4 ]' o% elet k 4
2 H9 u0 P- c$ Dwhile[j < trade-record-one-len]
" g% L: q% b* Y1 G[
1 x6 \! r2 z: d7 ?4 fwhile [((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. L8 {, P* N% b  o; f; p3 P: t
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)
7 d% N' J9 f& r( vset j. D+ J. L; @# w# N2 {) ~" ?" N1 s
( j + 1)

( U- f8 T) F! z" b0 Y]
# C1 z4 k9 K  M* q4 G* \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 ))
0 U/ e5 [3 w! H8 S2 x$ O
, a( B1 j' ~# o/ B: o# O
; R) b9 Y! C( e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: G- K* s- d( I: S;;
及时更新il的评价质量的评价0 k, }5 a1 g, F5 W" h; p* R" f, x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 o' U: l" K; I
set l (l + 1)4 ^; c2 w3 W7 u) R0 C& B
]0 v* G, A+ N- h
end
: {0 z" V2 }5 c8 {( g
- }0 H' n3 T* G1 V/ mto update-credibility-list
' R, z! J: j1 O7 Zlet i 0
) E* c; s$ ]9 `- X4 `while[i < people]
8 R, f/ |9 d! L) ]& c[9 o  P# L/ `: f* k8 l
let j 0
  @4 A: t) l" D7 x: k' @let note 0
2 N2 Z- x& F) M9 r- b0 r, m; o9 Elet k 05 d4 B' V* J! ^% J, z
;;
计作出过评价的邻居节点的数目
0 Q, `! D# V1 g. Iwhile[j < people]! l; p/ m6 k2 b/ \; S- y9 h
[
3 D% H: }5 K* [3 `if (item j( [credibility] of turtle (i + 1)) != -1)
( R0 M1 u. [0 _0 R2 b1 A;;
判断是否给本turtle的评价质量做出过评价的节点  o/ m; `' f8 P2 N1 N, X% b
[set note (note + item j ([credibility]of turtle (i + 1)))% x0 F0 ]3 s/ v4 Z$ ?6 y
;;*(exp (-(people - 2)))/(people - 2))]

, A* |; A& b* e7 M- X, l" i# ?4 W$ Qset k (k + 1)
! f( ~& r5 c' T% [9 y9 J]  x; @7 f; C# |" r9 Y5 U  b7 z
set j (j + 1)3 u+ t- j& ]1 n3 y- v2 O) S: k
]
9 r  {' s) a; g. Zset note (note *(exp (- (1 / k)))/ k)
. N5 B6 n% g# [% Mset credibility-list (replace-item i credibility-list note)
9 i" d7 r% o7 E$ _set i (i + 1)+ S1 e, a4 _# P8 [. F# Y
]( ]5 U5 X" B8 s
end
, q$ W' b. t/ {) _, K
* j' {* A& F) u! Y+ u% ^to update-global-reputation-list
4 I  P- F% M! W: Z: ylet j 00 b. ^# Z& T' c  D
while[j < people]
6 C# S& l8 x( r! g& E[
' [+ H& G! Z9 E5 c! elet new 03 A6 j" L' ^, `- H* A( ?! j
;;
暂存新的一个全局声誉
  [0 u, i* d# N- `% Rlet i 00 _6 @$ W/ L1 z) T$ o8 N
let sum-money 0. G3 Y' u, Y5 F5 k3 g
let credibility-money 00 N& G% r, [. l" W5 U6 |
while [i < people]
: {  \1 p* [2 C8 n! x[9 p3 x3 k7 f' _8 Z% p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 a  g) ^5 Q0 S* f$ g6 B% F  N! v4 Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 v. ]/ Q9 z8 N# hset i (i + 1)
4 S  @: A. b+ l! U]
9 b: k! _" V7 {( t5 ^  m% N* ilet k 0
7 p, E$ i, v) N0 clet new1 0
, u+ W6 G- j: l# B; M7 hwhile [k < people]
. e, k* L9 m+ b& G! D" b7 {[
5 V) d# V; l5 q% y, }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)% O) B/ R; h1 e  W' V
set k (k + 1)
, i; i# @% S0 y" Q' {]3 ]% J/ b* ^' j: P; f3 k2 `  u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * K/ Y1 z. S4 E. D2 D/ N8 \9 Z
set global-reputation-list (replace-item j global-reputation-list new)
3 e% X' G* i0 t3 a7 H2 gset j (j + 1)' i4 A- i: n4 ?9 L
], c. n, S, [, J* c( ?" h
end8 U( e$ q! ^: s* J: i3 A

7 r; T: x/ j' y+ Y. J( a& o# V* e* h( V8 X7 N2 P

: A$ \5 Y; O; ]2 U  j4 b: vto get-color2 i* w  i6 }) J- G* j
0 c3 W) V% o9 B  p( ]
set color blue

- }% }5 k3 K: ]' ]# M+ u, Zend
0 Y! B7 [9 z5 p! k$ Z$ B6 [" O; C' g- N  D4 Y4 F$ z: C. A
to poll-class
$ `; x- }3 P( h$ e7 g$ P: Dend
/ t% Y9 h$ F8 C7 r. Y+ G6 _7 a' F: ?
: N' Q- I  J% ~0 r' z1 q5 Sto setup-plot17 X0 @; b; h4 \0 T+ L
) b$ @% m2 ~3 E  f( G1 X9 z$ J
set-current-plot "Trends-of-Local-reputation"

1 `  ?  x: O1 r6 r7 b1 O' N$ [
set-plot-x-range 0 xmax

! K) s2 X1 x$ j0 G- B; s8 _- u3 k5 L- a9 Q$ \2 T* j3 m
set-plot-y-range 0.0 ymax

1 U  ~/ z1 |# Y* {( }end
! J9 O$ F1 L2 n' J. E3 ^
* T3 w0 `- m1 u5 {: t+ @7 i# q, bto setup-plot2: z, |& x! P. z) n

  e) w' q4 Z7 f$ X" lset-current-plot "Trends-of-global-reputation"
2 `" E" ?1 J( V( I; j1 n" _6 `
+ k! D9 I, F; t: @1 A0 {1 d
set-plot-x-range 0 xmax
- q& i0 Y$ p  t: o1 h$ L- K( s0 M

- G% m3 w/ N$ n; B3 k1 c4 `- fset-plot-y-range 0.0 ymax

( P, h& o& A+ [/ r: K* ]  T$ {end
+ r8 R% u4 r) o% [7 k4 {* b! D- ?# ~3 S# [6 r$ T: P. C# o% z$ H7 d4 |5 t
to setup-plot3
( V/ s9 W0 C2 g7 c% c& U1 w- O) Z  [" F& R. J
set-current-plot "Trends-of-credibility"
* w$ f' q& _4 Z7 p  x" w

7 e% j% f6 Q7 `- i& c5 Dset-plot-x-range 0 xmax
5 u2 K  S* j8 y. \. u: v' ^* B

. r- M& A! a% Y& yset-plot-y-range 0.0 ymax
# V/ M& O) l* e  ]9 [- U( m
end
# ]  l, o9 L0 O$ F5 \
; U9 f- f. e! J8 Oto do-plots
( u  j: ]( J# ~set-current-plot "Trends-of-Local-reputation"
; U  ]1 v5 X6 i6 n1 |# c1 A0 Wset-current-plot-pen "Honest service"! W4 w7 `+ B; B/ m
end: P, L6 h3 e/ k2 Q( R2 P
# B0 b5 u+ Y/ y9 j: Z
[ 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.9 {/ |( U5 ~: ^* w

7 e6 X; [7 M# J* P8 Q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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