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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:
* N( f& d) K& Kto do-business
: P( T+ ~7 e) z% ]* K$ c rt random 360) {# u0 H4 K5 @: I# Z1 A$ f8 r
fd 1
4 u" v6 H/ o. Q/ |9 f* l ifelse(other turtles-here != nobody)[
' [9 f/ [, z% z; _5 |$ c  j   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.2 M! H, F( z9 u0 o9 G  T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 c6 Z3 X% }/ N9 S( K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! Y" O, s0 m0 b. w7 Y* ]$ ~5 U   set [trade-record-one-len] of self length [trade-record-one] of self
. O9 o+ ^  k, h   set trade-record-current( list (timer) (random money-upper-limit))
6 v% o) H" ?- y! O( c/ z& }  H* c( F. E: W) T# `
问题的提示如下:
  Z  {8 K; M1 E0 v' h! r6 V$ h7 e9 T- j
error while turtle 50 running OF in procedure DO-BUSINESS
' A4 Y! @( d& s, J$ y% J  called by procedure GO
: d% j0 ~2 E: FOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 \: T- x# Z& l* w2 J. ?
(halted running of go)
% O2 N+ M  }+ E0 Y/ C/ _9 h
2 z" l: c% S3 `& C- t7 n( j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~~
! e" H) z; |7 p# u9 C9 ?& X* _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
- |: ^/ D2 P2 @" Jglobals[
5 ~- u% t# R, H7 m4 h; Pxmax
+ X& q! y9 q: d" z, z/ g; R1 G% |ymax6 R7 k; C& c, S" j. y# e
global-reputation-list
3 T% P" ?# W4 e/ R3 h2 |2 m
. E( \6 A2 v# Z/ D2 g) O& W) k, y;;
每一个turtle的全局声誉都存在此LIST' Q# o$ B1 w2 V, y
credibility-list" V7 r# e9 J3 I: Q
;;
每一个turtle的评价可信度& R: l* o! O( k0 |0 d
honest-service1 p: s& j' G5 S  `3 Y% c; m
unhonest-service
6 \( p* Y" Y  g6 j2 e) `oscillation( h0 K- @* N+ f: B8 |! b% O& w$ Y
rand-dynamic
( P, L! w3 m% R/ X, C- x]
1 c: ^: [/ }# I% K; S: p& Y
# K* g" G% W* _4 Eturtles-own[+ y2 E' m) E: O; L' o4 L) b
trade-record-all
' ]6 I# w3 W7 r' Z* a;;a list of lists,
trade-record-one组成# K8 B% {& d# L+ i) F, y
trade-record-one
; O: I/ s  U, ]4 L;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. K1 a/ k, ]5 {1 b; b6 E* ?

# _, q# b* n/ C4 {- Y;;[
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]]$ s6 [+ z+ L& J2 ~% p2 X+ [# @) g
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], R3 ~! r) D7 J# ^) L
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
6 n" f& {6 r  }neighbor-total3 Q4 G3 ]& Y' O3 {6 s
;;
记录该turtle的邻居节点的数目1 p7 p2 b; V9 v
trade-time
7 q  ?$ P  {' ]  f% ^/ C) C, l;;
当前发生交易的turtle的交易时间
7 ]  I8 L5 r7 ^6 S! Dappraise-give8 p8 ~8 U* i; |, j5 B" h8 v
;;
当前发生交易时给出的评价
& ]. {% g8 _/ N5 b. @4 Lappraise-receive! I! G$ v1 z4 k$ I$ H$ f
;;
当前发生交易时收到的评价
2 c+ c3 ^% b# n* U* v) k% |appraise-time3 i1 m5 m% o# z$ {7 x
;;
当前发生交易时的评价时间
; U7 T( S3 i9 ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 s6 i, ], a+ A, \8 @
trade-times-total% O1 q( C( e/ c, h+ F9 _
;;
与当前turtle的交易总次数+ j$ @, `! q3 Y) {' t& g
trade-money-total. C' l" I1 m: F0 g0 N; N
;;
与当前turtle的交易总金额
# q7 e+ S* Z4 S; dlocal-reputation
3 P  n! X" \. G: `global-reputation( Q3 c( ?/ Z) e8 {& E+ Q' h% N
credibility( K2 p0 g' n; W
;;
评价可信度,每次交易后都需要更新6 B9 r/ U  L( c" e+ m0 {
credibility-all0 m5 U+ d7 q+ E2 `; 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. V2 R6 A: T0 u  D1 p
9 F8 @  U$ w) }4 y
;;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0.53 L. Z: L: a* T
credibility-one9 B2 V2 x. @/ K  A; T: Q
;;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
4 X. b5 ^$ P) S& I0 i; h$ \3 `global-proportion0 p) P) M2 C+ E' |% }0 k3 ^
customer/ E6 f% H# R( E" w8 A7 E" Q
customer-no( e( L8 u1 S8 Y1 i
trust-ok
7 f  W$ |4 g+ {3 ~: T2 E* v+ M7 Ztrade-record-one-len;;trade-record-one的长度' Z/ N  {0 x% ^3 V( h
]
  ~6 _9 [1 R& `3 Z5 k) ?- ^/ ]2 N  T9 s7 D. y( i8 o
;;setup procedure
0 g9 ^' k- f- d  p3 b! [: {  h/ \$ D' _  A
$ s4 P% O- ]$ tto setup! A, J/ O6 V/ U2 A5 ]; u

0 {! d8 @  _6 B* _  ^* y! y1 j/ ica
4 C" Q8 _. h7 `& s8 H2 J/ g
" {! d7 b2 m' t
initialize-settings

+ J! ?, w1 h+ R+ x+ L7 D2 B
& G* V9 k9 X7 Acrt people [setup-turtles]
5 u% r2 }# p; g# p6 {

4 M8 h2 R; r0 t0 T9 ureset-timer
+ L% `9 z! K7 J% ^* X( B. q& g
$ e6 j' d. J3 R( n+ \4 [( {9 L3 Y5 v
poll-class

: r2 u, |) W- H4 e2 ?) r
& V3 G! y2 V* f: \/ t2 Qsetup-plots

) d0 E6 ?. X3 o1 M8 ?
, X! q1 Q; P0 c5 pdo-plots

! l, ?' @) x2 s! o: e+ S! K+ ?: Aend$ j; t6 m2 n& ?
; G- }7 {+ U- `0 E8 w; K" H- C
to initialize-settings
9 a8 ]$ C8 L/ X/ K) _6 Y+ ^2 V! q$ u8 e& ?" N, I3 r
set global-reputation-list []

4 F1 x- w& r# [4 G$ L9 d) I) H: n0 Y% u
set credibility-list n-values people [0.5]

2 J/ D6 k$ m& v6 Q/ _2 J# m; }
. A) }3 M  @9 X0 u  Oset honest-service 0

, a% |+ H8 k5 q1 B. B! G+ y, b& [. k7 S! {1 `# C5 v! D; B( a
set unhonest-service 0
! S2 @$ o% e$ m0 I
9 Z6 U- |& Z0 J6 L
set oscillation 0

6 A' }* Y1 x4 y( x0 P* E; L! \/ O- R6 m% r
set rand-dynamic 0

+ J6 m+ |% o7 C% A7 S" v5 Q% pend
2 T! ^  u& u4 u/ X4 H. ]/ y: e- j% a* G. A
to setup-turtles
+ O" B( d8 Q! F. v  o8 tset shape "person"" H& S" T# t, |* c
setxy random-xcor random-ycor
! H5 r- F: t  i* o; e0 c  ^set trade-record-one []) |! }/ Q" P* Q3 r+ j& ]  F# |! R

# Z: a. v4 f5 H: b- w& a' Q% q2 Fset trade-record-all n-values people [(list (? + 1) 0 0)]
+ M; E. c4 M1 ]: S; M) j  p7 Y

& d1 @7 |* b% \* Iset trade-record-current []( W4 M6 }( u* H6 ^
set credibility-receive []
! K) g4 o1 j7 c$ i! W8 l! vset local-reputation 0.5: k4 q: G& o$ s; n, P+ h
set neighbor-total 0
$ _0 w: y: Q) _$ T  q1 U6 Y/ lset trade-times-total 0
3 M- d6 F5 u9 _1 V/ X* Oset trade-money-total 0( U. ]+ x6 H( w
set customer nobody
$ v! `, E% @; _- K+ hset credibility-all n-values people [creat-credibility]
2 [5 w  O; h% A0 tset credibility n-values people [-1], B- }0 d3 ~. W8 t6 R* t
get-color  `; W& V* b( i

- ]) ^* o( W, h- h8 ]end
( O+ t4 b& F9 J# p0 T, L0 }7 b
! Z2 O# b/ u8 R' H. H4 u! N4 Z+ Rto-report creat-credibility- T9 v8 c3 a8 E/ }0 }  F6 ~; g5 G
report n-values people [0.5]( `; j; U, I  G9 X0 ], I# u
end
2 v* _5 k) E% G" M7 U
) N5 \3 k! h" D9 A; ~8 ^( G( L8 Pto setup-plots8 H9 d) d; e# ~) U$ _1 E0 O8 H
4 \& X# W' l0 j. F' b" y" Q/ F/ t
set xmax 30
  a4 c4 S! h3 t

' Z; y5 U, }. B9 f- Z/ O1 }set ymax 1.0
( H+ i2 ]* a0 D9 k% `7 {# i! D

2 v6 ~! m! d) v& B. a3 b0 \: D( ?clear-all-plots

5 ~( h0 O+ M; I* ~/ J. U" W& z. e: p  F6 |3 w
setup-plot1

: k' B& q1 S$ k8 e% b
5 D6 V: H& `4 nsetup-plot2
, j- D8 J: A! {' Y2 h% {
* Q  z' e/ u1 s# U3 v
setup-plot3

" [  V# Q# M9 m& m( ]end$ d, l( ?! M+ `
. U1 h& {  N( k3 ~- i
;;run time procedures
$ D4 M: k8 o) @' \5 |
' N1 f. L) R, `3 bto go: ^1 G5 r9 W4 h6 W! b8 L
9 x# e6 _3 Y$ _  j6 g
ask turtles [do-business]
7 |  B: n- T# M+ O( I) T
end
, l9 a+ Y# j  {- z- ^) r: A& Z. I+ S/ e
to do-business # r" A( M+ n; J6 q: W

5 v1 e) L: _$ [% _* p6 Q6 d/ @" m- k5 A& D; ~
rt random 360

1 l, i' W' \9 i. _& d) R2 `& }! p( r; F* q4 w: t/ O2 y2 K
fd 1
/ ^7 ^' f/ Y: f3 A& P- x

5 k+ o" p% q0 y6 Difelse(other turtles-here != nobody)[
6 H7 R( g  n5 u: A2 L8 S% z
0 m* G! }4 B7 k# L2 i0 h
set customer one-of other turtles-here

! M$ Y& c/ O$ ]4 p: b4 N2 x) O% h. ^  B5 u, h
;; set [customer] of customer myself
: Q! j- t! ?5 W4 J

5 w! y5 Q+ H; D# b0 wset [trade-record-one] of self item (([who] of customer) - 1)
( h7 [, C2 ~7 q+ {  V1 P[trade-record-all]of self2 a5 G- T" z1 G/ b- C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ A+ C3 |$ e- W: P- d! Q2 C4 f+ s
( @9 z& Y% h  X2 B3 O
set [trade-record-one] of customer item (([who] of self) - 1)" |% _) i$ N  U+ ]9 V3 J( O3 p
[trade-record-all]of customer
! Z* _( Q6 P  F$ `
: j5 J1 \0 W. o6 q- g$ Y7 F
set [trade-record-one-len] of self length [trade-record-one] of self

" ]- b% T9 b- Q& I
  [( o2 Q% X+ O* F3 n4 gset trade-record-current( list (timer) (random money-upper-limit))
1 f. R9 S2 u& `1 {

; N7 S* k3 d" @( \7 Y/ Rask self [do-trust]2 A; U( z& r+ ], O3 ?, x$ g+ Z
;;
先求ij的信任度( [* ~: {* j! s, X4 P- r# Q

( \! W  F( C2 O% T' T1 `if ([trust-ok] of self)
7 [4 {0 W; Q# `;;
根据ij的信任度来决定是否与j进行交易[
% \" K. B9 [: n* p; @) Q7 |0 _) M. {& Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ r) }0 _: b- k! |' j1 N( {& y: \& O

% U. @9 R5 y' q) G% U8 A[

0 I0 [3 O% s- N( p! Q) P9 k
6 b$ r7 c: Z% Xdo-trade
8 f" K# C: i8 |5 U

$ d+ s6 O7 ]/ T, jupdate-credibility-ijl

6 C" V. ?9 @2 r. B3 V, G- i* K6 T' a4 P
update-credibility-list9 ~: c5 p6 ?4 I; ]7 B

# ?" @6 A/ M( H( b8 L7 t+ x' o  z5 C: W. ^' ~! ]7 m/ D# w
update-global-reputation-list
0 O% g, A+ W1 K2 u" Z3 A2 e, h
/ ^; X' X) U9 Q& t: S, l% |
poll-class
' G3 Z* G' i5 ^$ [& o" g6 a3 o

" N2 x. a, @. {- Iget-color
* ]- m3 y/ c, r4 e! p" R. N
+ G8 {* w0 c0 H: Q
]]
2 T; z& e7 c3 |1 D& k) n
9 s& F& o' X7 m- e, ^5 s, B3 i;;
如果所得的信任度满足条件,则进行交易
; A0 m: G6 u8 c4 ~" l! t1 `
+ j4 X, Y0 [/ w' g. p* ?4 G[
5 W6 s4 U% o, y' N! b( J1 u
2 w& B* `0 Y7 ]& M4 K1 X: d' J0 @: ~
rt random 360

" E5 Q& O) _1 C" R- B
: i7 @+ G5 ]$ O" W+ E0 `( mfd 1
7 h' _+ J4 _& D- G. s
+ I9 o7 W) ]; l
]

7 h; R  M/ P) z- w+ l' x8 G' B8 a" H1 X8 a7 r8 U4 ?
end

. p; N# H1 f. X! \4 H9 d, s
" T: _+ [2 q1 J* F3 }! Ito do-trust 7 Q% q$ X9 E  W; P! j" {  b) m% T8 O
set trust-ok False7 e+ ~$ [: r. h8 }
" @7 E2 [6 L6 t7 [  {: p: L

2 e/ _  N+ h8 _; h  r3 ~let max-trade-times 0# I6 H/ }. K) I% E7 w
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) a; m8 @( a& L0 b2 l4 f1 i( dlet max-trade-money 01 s6 _0 {/ Q, t" \- ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- o, a) u+ a' h7 C5 E+ J% t  X2 t9 z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 v" v7 x' A# ~6 w  n
# k" z+ o3 [6 E5 Q1 W6 T

% b7 K$ V" D4 Hget-global-proportion- }6 A0 H: G% u& [, s, T' q
let trust-value
$ m; J( k4 c+ [+ U3 Rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
4 L3 Y0 @  Z7 Z9 X6 H
if(trust-value > trade-trust-value)
1 {+ c$ i/ j( L! v9 _9 u[set trust-ok true]
' M  [- k) W6 Pend# E3 R: h4 g; r$ e& f, M
3 `2 w6 W' I, Y: {. h
to get-global-proportion! ?3 b& |% ]! k9 t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& ?+ C# D, {& B2 e# L[set global-proportion 0]
' s8 d2 s" y/ Z0 r0 H/ T2 u. g[let i 0
, _( K8 ]) k9 G7 y7 Olet sum-money 0" e/ w/ w6 j  Y
while[ i < people]5 V' _6 G' p  Y4 K5 q9 d4 _
[. f/ k& Q, U3 s* t4 O: Q0 X
if( length (item i) U3 S; L# D4 _! `: z8 h
[trade-record-all] of customer) > 3 )
1 m# o5 E. ~" C+ v3 h8 V
[% y& ?* A; n/ S, z: L( K. k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: p7 o8 H+ l$ K2 v9 L]  O. N7 |  T, P: g5 |4 X8 t
]
3 i% L1 Q0 P- Q3 Z! G; s6 r3 slet j 0
# _0 g( x% ?$ Q4 I/ rlet note 0
  J1 M1 g+ }" H5 Twhile[ j < people]3 `+ |8 J  U3 a
[
: d  p% `! o' _' Kif( length (item i
; b+ E# D  q! d[trade-record-all] of customer) > 3 )
+ I4 }. J* W/ K8 G
[
5 f3 B" q* C. f# Y* i' j9 b, Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* Y( K. O/ @/ ?4 \. ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: B, U! O. H" U5 \9 v/ x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 t% R. N  B. r) m6 {: r
]
; p4 W3 v- n8 @* u1 D" P& n]; \3 S5 C$ K+ I6 W5 ]/ e3 T
set global-proportion note
/ h  c& `3 T! M* M3 ~, K- d  {]  Q" ^" r7 G2 n+ U6 `7 |
end3 x& x( ]$ v; C" G3 w" u1 P
% s! V( o" e5 c9 s7 W+ m
to do-trade
% Y% j1 z% {4 `; i8 a! h;;
这个过程实际上是给双方作出评价的过程4 L3 x% p+ n) ~7 P( c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  I! @( V$ R2 Q3 R8 l* ^( kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* k2 o# Z" Z2 l8 [( m; T$ T
set trade-record-current lput(timer) trade-record-current1 L  x1 W3 r+ B& a; ~
;;
评价时间
# W' A$ W6 l+ [1 j9 s; n* |ask myself [9 }! |% R/ C. F  h
update-local-reputation
/ a( ~- g+ v) g+ mset trade-record-current lput([local-reputation] of myself) trade-record-current
8 p% A+ s& _" _+ H- P9 W]% _9 {; U. E$ ^( S! R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: K7 C) q* _6 k2 G;;
将此次交易的记录加入到trade-record-one
* l5 o3 T3 ?& U2 _, ^0 b5 |( e5 Rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 F: F+ F$ h8 w  j; H" E/ B
let note (item 2 trade-record-current )
# r3 N' r+ J, O* X& D* T7 Q; A9 _set trade-record-current+ I4 C7 C7 H2 v# F5 H- I, U4 ~
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 D4 }* e4 d! {. i/ eset trade-record-current: D" S8 c, u8 `. h5 O
(replace-item 3 trade-record-current note)
' T8 f$ c+ u. F; T( \# H( N* x
1 d0 U% I  s8 C8 w% A/ Q
7 f3 M# i7 J% {9 O
ask customer [2 N# K5 A6 T6 [: e: h$ F! {
update-local-reputation
4 W/ Y+ D2 W# q% F, Kset trade-record-current( \5 X$ |$ j$ Q; Z' E5 @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( H1 g! ^, y; g3 C]
- n2 S6 H2 i- }- c( C  b1 G4 V1 a

0 M+ `% C/ J& p$ N0 V4 S+ E9 }% Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ }8 W% b/ k. M) M# ]7 K! _& h* }

/ [1 @6 K, u- Q, {; G$ Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 t8 ]/ }' I5 o;;
将此次交易的记录加入到customertrade-record-all1 r7 H7 j+ c8 ^" U  j% R# A0 }& ~+ O
end
! I5 P, m8 Z% H' g9 B* M
3 e1 Q, L( T9 ^: Dto update-local-reputation
- e; y4 y' x" Q, x2 L/ zset [trade-record-one-len] of myself length [trade-record-one] of myself
6 b" u- E7 M2 [4 {$ R9 z: r
% P' |) I5 e3 I& k: t
& F" ?# E! X, R1 z. x& [;;if [trade-record-one-len] of myself > 3
% c  M' p/ y3 @: ^
update-neighbor-total; [" M2 ?+ l, t" x
;;
更新邻居节点的数目,在此进行3 Z) w$ a8 N* F9 o. j; K  s1 U
let i 37 l0 ^, N, }7 x+ G3 v9 g* y% I
let sum-time 0
# L% F& G3 }* P, u/ b- j! Gwhile[i < [trade-record-one-len] of myself]
" d* c7 I( L' {[
9 j- D' R- J) z1 n' w# }0 Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); i/ ]) t, c+ j( `' B$ K
set i
* K9 \" W# x5 v8 `  q2 Y( i + 1)
; H: v% c. Y0 i
]; `3 a2 c" A: ~/ z. g) Q! {0 d6 e
let j 3. D: C0 W% B0 H/ r% R1 m! K
let sum-money 0. ?$ ^% @, S* J- c$ s0 T+ N
while[j < [trade-record-one-len] of myself]. ?: h5 e* T6 R- Y7 u5 P  c& e
[
/ z/ _% ~. U7 s* C5 X: [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)6 `, l6 Z4 d' Q( n. f/ f+ a* `
set j2 k; S' `6 S- \  Y4 {8 R4 X3 i
( j + 1)
' |' i6 e3 P' S& v2 S
]
1 D2 i$ z* h$ F2 o/ R" V( Elet k 3
1 \& {' n  _; n) }: Z0 Jlet power 05 U% M" w- J2 [$ i/ d, Q2 Z; z
let local 0
7 g# @! ~7 x; M* i9 Swhile [k <[trade-record-one-len] of myself]; I; ]% b3 q0 K& K9 A, x# U
[
% x/ O# Y( ]- n" e" [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) 3 C& G+ v& d- p0 a
set k (k + 1)4 R- o+ V+ n; w4 S: A
]* B: u. B8 M* ]& @
set [local-reputation] of myself (local)
' y! s2 x* u! ?# u" Iend
" @) r. m# d; K' c# B" U; |" U6 B6 h! A  J
to update-neighbor-total
' c, @# x/ E1 B2 y- ~4 {$ K# {5 T) K/ E6 i; G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  Q5 [8 Q1 a/ k* ]( u% i1 F4 k5 h7 _  y7 W% b1 N/ j

$ G! t, W0 ]: J9 P4 pend  s! ?7 _1 u! J; N1 [
, y6 T0 C/ i( ^2 c+ M" W; F7 ]
to update-credibility-ijl + J& H. B' K7 R% p) c- w
& o4 B1 Y1 S1 M9 X
;;
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。
2 c, m% Y) l/ G6 f; Slet l 0
1 m) q. @; R8 v% F* E3 J, g9 twhile[ l < people ]
6 h+ e6 b4 k) k' G: y;;
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3 U/ @  j) V! L9 |
[  \5 Q% A: @, J% h7 \. B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): b: r$ b8 F: o0 N7 }
if (trade-record-one-j-l-len > 3)
2 X8 l$ o  p$ s5 n5 R) _! ]6 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+ ?1 o# C! H$ f
let i 3
. u: c  Q* C; U5 j, R5 U+ M, vlet sum-time 0
" z( V% ]* m$ G- `" W7 twhile[i < trade-record-one-len]& I$ O( ]# {# {5 ]2 f
[& q& P- j! A) D: S8 Q9 ^' \# v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. d* }2 r* ]. J" s) {7 F$ fset i
5 X  t- a5 h; n5 _9 C% @' t& L( i + 1)
7 V' e% C% @0 J6 a" P# b* a
]) y8 f$ n4 i; f' ]' w5 }8 [6 C; a
let credibility-i-j-l 01 @6 ?8 C, B* h) I
;;i
评价(jjl的评价)! y5 Q: y& k. ^: b- F) ^
let j 30 _6 S+ @% e% k! c) j' U
let k 4' w0 T. X5 A8 B8 u
while[j < trade-record-one-len]
( q* F7 t3 N- |[' e; O" Y2 U8 _1 f2 L
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
9 ?* @) c0 u% I+ U3 `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)" M, L( B7 k4 o- K& V1 P9 e7 j4 f
set j
  j* D. H5 B4 `/ O0 D2 L. `( j + 1)
9 v6 R6 O8 |( C, Y( }! h* e
]
+ V$ U! N+ `1 Z9 i; b1 Kset [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 ))$ m7 z, d# }7 o' l9 l

0 @+ \6 V  I! @6 v4 ?
+ j/ m! _7 y3 U2 I& Z) {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 S# m  ?  ]% S2 e. N: h6 o
;;
及时更新il的评价质量的评价8 d7 o9 F5 X' ?: Z# Q. b3 E% S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: d: q6 j. ]6 ~7 r( \% x
set l (l + 1)
' [5 l! l" F' x; \5 S]) q: ], Y7 b! M
end9 s$ U9 O9 h. z, L( H; U+ U0 ~* x5 A5 @

6 U8 v% p3 F3 c% ?# f1 {6 Gto update-credibility-list- z& j% V4 S4 f% E. k
let i 0
8 W* \+ i* ?% R1 }while[i < people]: H2 s8 j4 ~3 s* h+ {! T$ h+ S
[3 I% o, ]/ l$ x) v! ^' p
let j 0
: Y% X) l8 }2 E5 h. v5 M; T; q+ Mlet note 0
3 n$ a* i* f6 W, f% e8 Z  x2 E% {$ I0 Olet k 0
* }% M' H. |+ f; ?- a;;
计作出过评价的邻居节点的数目) j$ ?. Q! V0 ~! K( z* O
while[j < people]  y) d# r/ E/ Q6 s. h
[0 o) ~; ~9 Q$ m; g2 m2 ~
if (item j( [credibility] of turtle (i + 1)) != -1). j6 m, B9 i# a
;;
判断是否给本turtle的评价质量做出过评价的节点* M7 O. M2 [" O- @9 ]0 J8 G! t
[set note (note + item j ([credibility]of turtle (i + 1)))4 G5 ^" J) w+ W
;;*(exp (-(people - 2)))/(people - 2))]

$ `2 ~2 A5 T  m4 H, E, pset k (k + 1)
+ l2 }& L9 M# v# G5 Z8 V' e9 J]
& h, P" w- u* T% p9 Eset j (j + 1)
! A# s  C3 y  _) }- o' u; B6 @]/ \% I- w0 h% N$ L+ T
set note (note *(exp (- (1 / k)))/ k)) ~6 @6 g  M) z8 F* Z2 q
set credibility-list (replace-item i credibility-list note)
6 ]2 x' S" f9 E5 I1 Kset i (i + 1)% I- D6 ^% G# u# l
]9 |" J. K& @0 H9 c. V
end2 h( r4 m2 p7 I
" |# b6 @+ ?4 w* Q9 ?. d" b% {) i  i
to update-global-reputation-list
! V! F$ }! \  a( P1 M; w, Klet j 0
) m% t. g$ Z, b1 J. Dwhile[j < people]3 }; Y4 `9 r* O& U- ]6 N* {
[
! b. \# t4 n3 E/ D1 ?& g/ Q; {7 nlet new 0
) }+ ~  {; ^  U5 ]& D4 s;;
暂存新的一个全局声誉
1 P" r; d8 U8 x# _" h3 s1 I9 Clet i 0) O1 g3 B  [4 T* d
let sum-money 0
1 M2 k/ p0 y* v* I$ \  F6 Xlet credibility-money 0- l' E, K5 ]; X1 U5 i
while [i < people]% q7 K" l  H" T7 B; {4 V6 [! _
[
6 v1 T6 `) J5 {9 K1 xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 S8 i! f8 L; ?2 |, I9 O5 fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% Q. D( B- ^4 y  Y5 [' r7 |8 T
set i (i + 1)5 q: R4 |% V( @' N
]" i* U0 e8 @0 S0 V' E( @5 h4 V+ u
let k 0
5 h) x8 G/ @+ q6 D1 Y1 jlet new1 0- S& J4 O7 v' Y; W; y" D
while [k < people]
; i" [6 d! s. X& e, O6 A[$ U: m! Y8 K3 J7 ~( i5 p
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)) t# ^& \1 I+ k9 c
set k (k + 1)
! J; f# F7 w0 U, j1 S, P2 r]2 d% T! {0 O9 u6 b% e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 M6 o+ m* W7 r/ ~5 S
set global-reputation-list (replace-item j global-reputation-list new)
) `, i) C' B5 R) qset j (j + 1)
1 O; A6 z+ i/ e]% k' p8 ~9 Y, _* w
end# v- H% |: g7 U0 K1 g

: x5 @5 U  c0 S: {7 ]3 h' R" \9 M: t8 i3 q

+ @  x/ v+ c2 V2 e$ ]& qto get-color$ B* t8 v0 S, o" V

1 c! B& o. u1 |, \set color blue
% B3 x. a  t3 z
end4 Z9 o2 m+ @" a, K! g

2 p! m( L: O7 k4 U2 {to poll-class
- z, ^- q" \; a5 ~0 U' w$ Oend
# U" v5 L$ D8 G& e; S- w3 W3 @" S9 Z
to setup-plot1& h2 m% t5 g# k3 k+ _/ \8 J! Y
( ^, q/ v- _) C; ?
set-current-plot "Trends-of-Local-reputation"

' u4 T" v# g+ Z5 t# F: C5 p1 l
2 Y/ h! ?8 c/ C8 O5 l  Zset-plot-x-range 0 xmax
( N% S/ d. k* _7 j# a! z

' d4 e+ g- {, aset-plot-y-range 0.0 ymax

. p" g* X; i+ F) u$ lend
$ n) ^; V4 w( M+ G, r3 \+ P/ X/ S! ?0 B
to setup-plot2# L: n7 b- p8 n( c- W

* X. h0 \' s+ F7 U5 _set-current-plot "Trends-of-global-reputation"

& @2 t5 Z1 w0 P4 ]6 y! w& T. `* ?- S! T. H
set-plot-x-range 0 xmax
1 |3 G  r5 r6 v

- X9 l* ^0 M: Z, v/ @set-plot-y-range 0.0 ymax
3 R7 ?7 ]# o, w
end. ~  V+ _. b1 G* T, G# f  V
% y# _% K1 f9 d3 W
to setup-plot3
, Z/ L4 d2 s8 p. w' k) `7 P- @0 q) i" a; b
set-current-plot "Trends-of-credibility"
5 n; ^5 x# B0 O5 S$ z
2 ~8 I/ h8 P6 e
set-plot-x-range 0 xmax

* z* [& \- \1 r$ s: J
9 {  m9 Q: B, \2 F( a" V9 Lset-plot-y-range 0.0 ymax

9 E* M, R" s% P3 V* \$ _* `6 j3 rend9 l) f" ~9 ^' Z1 e+ ?( i

7 M( b) k* ^. {) V# y& yto do-plots# T* {% z: K1 l( x8 S1 i  G
set-current-plot "Trends-of-Local-reputation"
0 b; ]7 y6 V5 R5 X7 V& z6 K" Cset-current-plot-pen "Honest service"
$ L. d" v- n, ]( ]6 |+ Mend
- @- G; b( ]1 B. s) V
8 M  e' B. N! \7 i  c[ 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.0 s' e$ Q3 D; T) Y+ }4 \) u
& |- E/ b  M" R9 Z$ e( M+ M+ E
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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