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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:% `* l* B/ y" V- f
to do-business ) k. r2 q7 B4 J7 d  B$ e# i. `" Y
rt random 360
- x6 K; Y- j% g: K/ ~% ` fd 1* o" L: N$ v$ [' T- r! P, Z0 q: p
ifelse(other turtles-here != nobody)[& u. _0 |4 \1 X+ L, a) P
   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.
5 P/ y0 m' v% U! w. C, o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 T0 u. D" M' _$ N3 V  @# A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# a% z& h$ @8 q" G" g& x
   set [trade-record-one-len] of self length [trade-record-one] of self
* _% ]* _7 _  h& J5 _   set trade-record-current( list (timer) (random money-upper-limit))9 s6 f9 a' t$ ~# k$ Y8 W
( |% F6 J# f4 k9 A+ T& t4 D6 y/ g* ~
问题的提示如下:
, P/ e( \1 \% m" C
0 U5 v2 f5 {- R/ Merror while turtle 50 running OF in procedure DO-BUSINESS* i% F4 d2 a% |' g
  called by procedure GO5 o, R, R. m6 f; W0 T$ v
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 V  K+ E. t5 E& L4 Z/ ^
(halted running of go)
8 Y8 h' y1 {7 j3 ?: C& W
0 q( k8 D& \6 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~~/ j6 G- j) C$ d' F9 f
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. ^$ t, T! a& n5 Y
globals[
/ W+ {+ X; q( r4 i! y8 K. Ixmax! X/ s& j- b* c$ o1 `: e/ A
ymax0 y& b8 h& g, D' w. u1 l9 d+ X
global-reputation-list1 T7 {7 D# }; I* l
. @# ?2 b1 n6 ~7 @5 F2 [
;;
每一个turtle的全局声誉都存在此LIST
3 w0 @  Z& |: K( ^/ G6 icredibility-list! a8 A# n! R1 E" [" ]
;;
每一个turtle的评价可信度
; m# ^* H/ d: `! L/ _1 U5 bhonest-service+ b+ i: _, B: Y4 r" ]: M& e
unhonest-service/ o+ u7 y: V! M5 k3 l7 \* _
oscillation
" Q5 t1 G4 [! arand-dynamic4 R1 y1 R/ n2 D- Y! Q: B
]) S" \! W: ?5 L# e9 L3 r$ D8 g

+ }1 \" w& e( ~5 m& n; uturtles-own[2 D5 B$ b' p& P7 S
trade-record-all
! k( {: G# H) ?;;a list of lists,
trade-record-one组成
  U1 g/ C( n7 Ntrade-record-one- R4 e; Y/ W2 O# g4 [8 F
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 W" O7 I3 H$ d
( `. w8 G$ v3 y5 `' x, ~+ V1 r( M% o
;;[
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]]
% l& I6 e7 ~" m- G, k& utrade-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]
1 i, }3 q, Q2 d7 [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
% O4 N7 M# d# X, v' ~4 mneighbor-total
/ t: ]4 A+ Y6 j% E$ r' t4 a;;
记录该turtle的邻居节点的数目4 n6 U; s" }- f3 X6 w
trade-time1 K5 m5 ^- e& }, f  I: S
;;
当前发生交易的turtle的交易时间# r0 `7 k( V, [; t- f- {* E
appraise-give
, r5 y; H% r6 T7 Z;;
当前发生交易时给出的评价7 J3 V5 l& ~% r" T  v
appraise-receive# z% w1 b) ?  }2 {* q
;;
当前发生交易时收到的评价
, Y* M) s& E) I) _appraise-time
4 ~  Y  g1 a! D; [- b' i2 k; G;;
当前发生交易时的评价时间
5 {# N5 n6 r9 H3 o# ~- t% Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( ?3 e) W8 O# Rtrade-times-total8 q1 b* E6 y$ d  B  x1 ^& G9 `
;;
与当前turtle的交易总次数: i, i- `2 b7 n2 Z
trade-money-total6 q% h) D% f+ u+ G1 M1 z
;;
与当前turtle的交易总金额
! I: A' U% }! S0 E& h$ C, R7 Plocal-reputation
, E. ~  m7 C8 ?9 yglobal-reputation
- \& T$ p; M* z/ Z$ Acredibility' \1 V% J4 e( Y  F
;;
评价可信度,每次交易后都需要更新
7 T4 p4 I6 s) }, G$ Gcredibility-all
2 ~' r/ G2 h0 v- ^;;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: Y1 c3 g- [. \) x% Q1 Q) [9 i; a- g

0 T* c/ \6 s+ b; Q! b;;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
& B# A. C: {1 m! d4 n" s0 J+ D7 y; zcredibility-one; h% `( f3 W6 l1 @( B
;;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* N8 r, H. i5 ~" R* D% d& L
global-proportion
% ^2 I5 a3 ~8 D- u+ d4 ~( vcustomer
3 l! h1 c0 O) ~customer-no
3 r2 A$ q: ~1 T6 W% f2 s' @trust-ok: l: o4 G, W! N6 k
trade-record-one-len;;trade-record-one的长度4 ?& \; F& M$ s' d, C. J* l: z
]
9 F3 X) }# X& f7 {6 D1 J
3 j  i! t! E2 N( Y* X! K# |2 a: g;;setup procedure
8 I/ \4 A4 C8 u( j/ J- r: A9 S( c; [
to setup2 l4 h* x3 r5 o9 i

6 ~* @0 r: l6 A) z) }: |0 jca
1 H. ?2 T7 j2 P% e, t- k+ c$ T

) {$ E6 P# Q  T: Cinitialize-settings

4 Z$ A8 J0 K7 C; X" A+ m1 p' t  s& u  f  F( `& n7 o* h. q
crt people [setup-turtles]
/ X* M9 s: n" I! z  p0 J& K0 |( d3 p4 z

% X& S0 ^# L2 Z; rreset-timer

' [$ [: N- O; {2 I( i& R; M5 S5 n5 c. V* x4 e/ f. r* X
poll-class
; M. s5 y4 o( c& l1 F) ^

' f( L1 t  i- P9 e/ q" psetup-plots

; W& h- p! z6 K( ]' y
9 W8 C  r4 n5 E% y7 ~do-plots

; C$ ~& c* N' N: I- iend
# Q, \& G  a+ B9 t
# m4 ^, g$ R# \3 F5 ~: O; E! s1 pto initialize-settings+ C% U7 z/ x$ w% B

( M- c0 a! c6 Uset global-reputation-list []

) \; l8 N; G3 _& k
8 k# s8 q, ]. L* e8 aset credibility-list n-values people [0.5]
$ a6 ~! C' S5 [) ~
& G! B% O4 a/ A! u' h$ M
set honest-service 0
; z+ G7 L) u- h! X$ I5 a

5 D: x9 o  i7 v5 H! i( R6 ~' H! yset unhonest-service 0
1 ~( P2 y: P0 D; e
/ V8 r' h: f2 S4 B0 W2 t
set oscillation 0

, f" M5 c( O  A" s# {0 b6 }7 _4 j
set rand-dynamic 0
/ \( Y! W( k7 s& {0 L
end
5 d0 X7 R3 ~" q& C# Q% I" ~% s& `8 t! g1 o/ g2 o
to setup-turtles 4 V. {1 Z5 _5 p+ _0 C
set shape "person"$ x1 x: i7 N9 g, y/ @/ l
setxy random-xcor random-ycor
2 H3 n% U. r0 X3 B7 wset trade-record-one []& o$ z2 C% R% {) s) U# h1 _

$ m* U1 V' D0 W" Qset trade-record-all n-values people [(list (? + 1) 0 0)] * g7 b- X* T) ]4 r! {7 S8 j
  N7 w$ [2 S1 Q6 o& a: J
set trade-record-current []  W3 K5 ?/ c/ i( L/ y* c1 e( S
set credibility-receive []7 f1 K5 x/ f9 U9 B1 q' U
set local-reputation 0.5
3 |4 `  M8 V+ o/ cset neighbor-total 09 R- F( D4 a7 }$ P3 n+ K
set trade-times-total 0& ?7 ~2 S8 Z( |3 \  u
set trade-money-total 0# a' N0 y3 [' `4 @$ M
set customer nobody$ ~: {/ Q( n" q8 I  j7 I( S7 k  g
set credibility-all n-values people [creat-credibility]2 [% s/ {0 a& q1 ]# u0 t) X
set credibility n-values people [-1]: M2 }+ }( K- r4 I& r- v: r+ }
get-color6 X3 g6 S+ h4 K% U0 O2 m7 o1 f. i. p
2 A" E) j, D; k4 ~( P. P* Z
end
) G7 d. D$ s7 e* y2 S& D/ P6 ?4 J5 v6 J# ?  ]. A$ X
to-report creat-credibility8 z8 r9 ]6 s$ i0 B' v
report n-values people [0.5]0 i9 n) q! k9 Z+ A3 @9 _. v& z6 f# [
end, z6 M* Q+ q+ J+ H' X% {

- F& y& x+ c( l; C) }3 vto setup-plots( a2 x) _" I7 U) M! b1 p

9 S. V- T' O0 s' l/ gset xmax 30
6 h; G9 T3 y8 @3 E
" U$ d, `6 k( n% s; y$ }! Q
set ymax 1.0
7 P! F* }/ ~5 z- @4 s2 g

* A: J; N8 [! p; p( a& w: jclear-all-plots
4 `, j+ k* W/ J# P

& n( J- g9 e2 R4 U; B7 {* _4 M# ]setup-plot1
3 ~" [" H/ ?7 [- y1 y
9 i7 V2 l' e+ i% b3 U4 P+ R8 j
setup-plot2
2 D& J0 n* V: K: h$ Y  X! P8 \
6 f, p# Z6 o& l* q, i* N9 e
setup-plot3
5 q$ c0 _% \/ w8 Q# v9 [$ ^
end! W: P& B6 m; R3 C* u; ~3 t

1 X8 `# u7 `5 I! r4 R. h3 b6 p;;run time procedures- M" j+ A. n  y7 C2 w7 ?
; X: {9 g$ N: g5 p) Y$ d' d
to go
1 d+ s- d" R( ^2 q' h1 [# [6 @3 [& Y, Y5 |! u! |; _
ask turtles [do-business]

% C  k# P6 g& Tend
7 v( I! q( z6 p2 f; H6 U2 k+ `$ W1 Q& y+ \
to do-business # V' b5 c" G2 @

7 t' B* p* D/ f; Y! V
* c7 _5 I/ y3 |/ X# krt random 360

, h/ ?, j) u7 C/ s
& c9 A% N9 a7 `, h) mfd 1

9 e* [5 a! d6 L& }
7 p, ^. j( b, zifelse(other turtles-here != nobody)[

" p. C% I3 Y" ^; D2 `# D4 h0 ?- J! n) Q. u$ b0 ?; G2 u& |1 J$ ~
set customer one-of other turtles-here

" |# T% k7 Y; ?' q( A/ }# ?0 x9 V2 [0 _
7 h* Y; J1 ^# O;; set [customer] of customer myself

* e1 r  r  f  |# I, q( G5 ]# Z" [; A  `2 U/ t
set [trade-record-one] of self item (([who] of customer) - 1)6 s8 a1 B& O& X4 o' _  q/ z
[trade-record-all]of self
3 V, U  t8 ^7 B* P  j2 x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! F2 I0 ^7 N% B. r

  d* ]2 m% g/ m' Xset [trade-record-one] of customer item (([who] of self) - 1)
! a& Y0 b. C' R/ p[trade-record-all]of customer

9 D# |3 }8 |  T# K. H/ x9 u/ {, A, l$ S* e& [1 ?* p) ]
set [trade-record-one-len] of self length [trade-record-one] of self

' j8 a# w0 n( ]" \+ {8 Z3 j7 T2 h' M$ E0 i1 l! N
set trade-record-current( list (timer) (random money-upper-limit))
0 Q6 @3 \6 O2 I% C  b+ c
. v  v" P+ w, R  z' \, f
ask self [do-trust]4 t! O; r" [5 C0 _/ x
;;
先求ij的信任度2 f$ @8 P2 Q# P3 b. u  }. ~9 h+ W

# Q3 g. }: x9 w6 Fif ([trust-ok] of self)
8 n) q# A, s4 z- C;;
根据ij的信任度来决定是否与j进行交易[, v' n: J. n1 Q' ~& S4 M% j/ x* f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* f( I6 s" T8 j  @, {
3 B0 P9 z4 `, \; |4 ^  [( ]
[
/ }9 w0 M3 X8 H" h6 J4 H1 d
3 s; t* R, L1 z! h0 F
do-trade
& q: G" y- E' [5 S; F+ a- t
( v: T- ^: I, P# u0 G. S7 }# N
update-credibility-ijl

+ j/ T2 M% @: ^# W$ ]" j9 B* `1 B8 _; @
update-credibility-list2 i+ Z+ Z( h& V; _
- @) }0 S5 S/ L  H
4 n7 W$ y/ s( E4 d- [0 S. z4 u
update-global-reputation-list

3 |3 b; {% a6 r: Q0 n" _- Y" N& c0 e* s
poll-class

1 S9 N  B# I0 `& C
# C# W* @: w- H8 g! |! |5 N2 c/ dget-color

6 @; b  ^; p2 u3 |, u+ _9 X7 }
' U$ z, w' o& m7 H& @]]& j7 ?5 v% E3 @- r  G

! ?7 ~/ R$ C1 s9 q;;
如果所得的信任度满足条件,则进行交易* A$ b% X* z# L  l% H- H0 ?
' K0 X0 q: g+ _# t0 O4 D
[
! k/ E% r2 F. z. W. C

3 p! l' V% X) N+ i3 x/ [1 ]. w( W4 ort random 360
5 }" O8 ^# @+ G: ?5 V" Q
& W9 e% y! n3 f' {! c( o& ]/ m
fd 1
9 N8 ?$ o0 w% ~! I% N

- {' D5 ]. S2 z* P]
( ?0 K; n5 S1 s8 w- F- m  b
6 Q  B: X# S' f; Q
end
' F! Z7 X# S$ d7 s2 E4 ~

: k8 M5 ?) i# X3 Gto do-trust
6 I" i. g# p9 Y  c0 K8 jset trust-ok False
8 E. b/ y* x/ w
; y! i( ^4 ]5 K# c- [' i

1 l2 R: \. h0 Jlet max-trade-times 0+ I5 N1 U$ K# w9 L9 Y& T8 R4 K# N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# d( t0 c; ^  X" c. Z: F, D
let max-trade-money 0; k7 j! }$ l% U% H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 h* R5 `, o6 g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& _( p+ {! i5 u0 l  L  r8 P# f* L# s5 i
% J% y( W, \% [: G- [  R
get-global-proportion2 n" ^+ l  ^9 o( ]- }, E! y
let trust-value# K+ _3 |5 S1 G0 F  {  J
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)
. H* H' Y- Q/ Q
if(trust-value > trade-trust-value)# Q$ e# R. }) x$ s5 F) Z
[set trust-ok true]1 j0 V5 S  p1 P- }' ?. s1 |
end
2 L2 I% a( l  N" C
. P6 D! B0 n2 M8 h$ T: z% y1 N" Sto get-global-proportion
4 @( O" A5 h, f! K" S& eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 Y. ?1 Y8 i9 w3 [
[set global-proportion 0]+ g. s- J, k) e8 z5 R5 J
[let i 0: R6 [, j) ^8 R9 d' b- m% u! x0 P( Z
let sum-money 0
, w5 W3 q8 u8 Z) i/ a5 H6 I2 Fwhile[ i < people], v1 V5 R4 O& ^: Y4 s# _" h5 V% V
[- T/ Q. i& J; s& c; a
if( length (item i0 X$ r$ {9 s9 P8 V
[trade-record-all] of customer) > 3 )

, C3 L* [. `% q4 R9 x/ Y, E0 `[
4 M7 T. Z* b; B% k) h) \set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  z: @6 n; N, X0 E6 k
]$ @8 c9 P9 D6 Z" y1 z5 V2 I
]; \, R/ C  C" P6 _% |! z7 x! f! B
let j 04 k3 v# P9 t( j( P' W9 }5 w; P
let note 0' @, N; ?' j3 ]2 M# Y
while[ j < people]* X% d, @! _% Y3 n, I! y+ w
[
2 n! G2 ?4 Y5 S& H: Oif( length (item i( S4 p# R% f2 _' X5 V, L+ G2 V
[trade-record-all] of customer) > 3 )

( z6 F8 S8 G+ c% z' k  K+ r. M) }[, Z8 }$ K' ^+ Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), J6 r8 z( e& T. }- c: e; l& y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. [  A  E7 Z  R# Q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" V# K" H: _! s+ [0 S8 H2 w- d
]* |3 u1 K! @- G# i' O
]$ l& [4 ?. Q' v  k) B! i
set global-proportion note. N$ g# k- Q! T  B; q
]
; F% R2 s: n4 U8 ?( u6 mend
4 p, {- X, J6 v. a  e) J
8 L2 L2 J* a6 v* Ato do-trade5 U; T, C. ?* f( P$ `
;;
这个过程实际上是给双方作出评价的过程4 U3 h( r8 ]5 j5 _7 B  D9 u  L( s1 v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  v7 o% A' S6 r: k1 s$ dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  Y% O3 E  }4 }: Z! {) n
set trade-record-current lput(timer) trade-record-current
, q7 Y# }$ D; @$ g' D' X. j;;
评价时间, a1 f4 L7 I& X8 F, ]6 Z: w+ x
ask myself [8 S4 A3 ?& Q6 l
update-local-reputation
" _5 B" }- P# Z4 U; _' Vset trade-record-current lput([local-reputation] of myself) trade-record-current' n5 S; Z- o/ \
]
0 p; f; ^% x* }1 E% sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 I1 q- J) }8 ^% h& D6 [$ ^;;
将此次交易的记录加入到trade-record-one
/ q8 h; N7 e# x+ U% v0 s1 ~set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 E4 v1 @+ d" A1 J8 S, V2 e7 L
let note (item 2 trade-record-current )
1 v$ R$ }( w( G8 |set trade-record-current
  Z, x. M1 o3 j2 v( q(replace-item 2 trade-record-current (item 3 trade-record-current))
- `" B( ~( l( y  I  O& `
set trade-record-current
9 F* c% p8 S# r& P' O- x4 t(replace-item 3 trade-record-current note)9 \8 o/ c) C! h+ b

9 a( E' W4 L2 t$ v; I
+ O/ i1 n% o( }* D- @
ask customer [
; p/ W/ R9 Z, ~! N& w+ lupdate-local-reputation9 ~2 Y9 A& o! l! b3 s# k# C
set trade-record-current
% J- N& m2 N% x+ Q% W. F(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% N7 D' d9 U) T1 v+ B]# X( s! i0 f3 z! Z3 f# Z3 C3 x" W

* {, i9 u8 W; i" n5 J
) m! L1 n& N( {) ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: u9 V' y8 b' M, I6 q4 }) Q
7 K% [6 a/ M3 Q0 {% X2 U: e$ m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- @! ~' [! c+ Y/ I( E% u
;;
将此次交易的记录加入到customertrade-record-all
- \% I) i0 N$ ]& Fend
2 l: Y! |% [! l6 h, R" U
" G# D' Y9 W% b1 w. T9 zto update-local-reputation
3 K8 E4 M" L6 @2 r5 f6 d0 j$ Rset [trade-record-one-len] of myself length [trade-record-one] of myself
+ v7 G# a; M9 N! j
; S7 ?: _% q/ b. q6 M* x+ h3 r& e% `# f
;;if [trade-record-one-len] of myself > 3
; |; ~' V( y1 O2 V- x6 \2 h
update-neighbor-total
7 l( v6 C6 X, R;;
更新邻居节点的数目,在此进行( t, G0 G0 e* r" [* }
let i 3
2 N+ ~" b5 q0 N! u) m! Y1 e3 Xlet sum-time 0, S6 q5 _$ w! n* A
while[i < [trade-record-one-len] of myself]
2 K/ ?& ~8 a& y2 `# D8 ^[
8 ?  \) y" m+ k% i1 h; l9 [! T! ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ i% [" M0 ~, e" G2 X
set i
5 C$ o9 l" d' [5 w+ j' x( i + 1)
) [; P- @4 r$ _1 }  R. Y3 s: r
]) g1 e% {& c" u/ l, O& A6 W
let j 3
- g' z4 z; i. n5 B4 r2 ^let sum-money 0
0 o+ ^6 j  t  P- P' g5 L5 D& Mwhile[j < [trade-record-one-len] of myself]
. A1 B6 o3 N9 A  q, T[' J( K0 r  r- n* K2 k
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)/ u: y, W0 t+ ?/ E6 H+ G% w5 I
set j) }! s( O% U. n$ d( A" j9 |
( j + 1)
  B% Z# y! a2 e, C1 \
]
3 M8 M  Y8 n6 Nlet k 31 u, _5 M( x- H6 c- {, z/ F$ G
let power 0
/ Y2 ?& t. O% ?3 jlet local 0
1 A. n+ G( z, Y$ o% O( rwhile [k <[trade-record-one-len] of myself]! c: s- G! F: s; i: H
[% o  W& b/ p  W, X2 n8 P
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)
& m( U( X+ \* eset k (k + 1)
9 L: j. w) ?; w8 P6 a8 C]$ g+ H' d  ~9 R! a+ v8 ]8 ?! U/ \
set [local-reputation] of myself (local)
- Y- o6 T. {; {9 nend
7 i# X4 n" o7 d: C; y/ y$ {$ S4 J1 K) \
to update-neighbor-total
1 F3 l7 l* a( W  ?( z* R  w
7 _  G( S8 d+ r" d! Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. j! [$ a$ P8 o# v& i: [: m' Y5 t( h; s: |  q
  n9 P6 r) A7 P0 ~" D
end$ U8 i" K; M3 f/ [* p6 r0 s
" B+ k, `2 ^) j: A2 L
to update-credibility-ijl . k: v$ r# u& i" o

5 M* K( ?3 ]: q0 Q/ v- };;
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。' W- \7 ^- c- R6 @/ j
let l 03 o6 F! t8 D1 I
while[ l < people ]) I) g1 A/ J6 x  `: z9 ]; l- i; m
;;
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
) J. Q8 r5 \) W  [' w' ][
/ E% A' S% E4 i" u6 ~let trade-record-one-j-l-len length item l ([trade-record-all] of customer); R4 y/ O$ R" z1 f: h4 S4 P. x# y
if (trade-record-one-j-l-len > 3)
# A9 \4 d3 W( a! X! m- x8 {9 q[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$ c3 A+ }1 f3 Q# ]* i
let i 3
' m: |# X+ Q- I* ylet sum-time 0% p, ]8 U+ x6 i& R+ s
while[i < trade-record-one-len]4 ~% q3 B2 _1 \) Z0 t+ j1 C8 A* M* D
[
9 G$ j# m3 G) |" s# ^& ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 \! l+ _5 R; t( z
set i2 E2 I1 D* t* ~( L
( i + 1)

8 ?" V% v- S, j6 ^]
# K* I' T1 A6 ^* vlet credibility-i-j-l 08 h% o% J' y6 k$ @" W
;;i
评价(jjl的评价)
* I. T: ^5 s6 }0 r, I% {; x/ y$ }let j 3$ Z* c" s. Z! a( C' {
let k 45 ~* Y4 E5 J) r
while[j < trade-record-one-len]
) {) _5 \) B! ?$ ?$ A[0 f8 L& ~3 L6 `
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
. w$ z3 _3 F  [! b8 Lset 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)
: O. y+ U; z2 o( z, F5 p1 {- _set j
; ?: B4 x7 I* B$ @( j + 1)
! U: z- q9 R$ X
]5 ?% C* B: H( u' m
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 ))
% o' D* r& X% J& L/ e: e  |7 P+ u. i$ K, l
# V* z" [# q5 F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 S! g& N# R; [4 W4 ^$ ^; T# F4 n;;
及时更新il的评价质量的评价
  W* T/ \, N! o1 Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' Y$ H8 _- M; E. a' Xset l (l + 1)8 f1 |; d' Q/ O( h  D
]: w' ~0 [" g1 n: B
end+ t4 P+ c3 p4 z+ b# Z

1 ~! q! U# E& x' c0 n5 sto update-credibility-list& u4 Q- g$ r1 w
let i 08 ]0 Q; W+ \# ~2 G) ?
while[i < people]( r& v7 O& ]6 [9 c$ n
[- N. q9 g4 J/ ~1 E* N
let j 0
$ n/ H: R5 M3 W: `/ rlet note 0
; `5 V5 m5 U2 Y5 blet k 0
8 E: `3 ^. e" m; p;;
计作出过评价的邻居节点的数目; Q+ y8 R: P; B* A6 O* U
while[j < people]( b7 }/ I( t. q$ W: O" r9 H
[& B+ R! y* x9 S; X& P* F" H
if (item j( [credibility] of turtle (i + 1)) != -1)) o1 l7 i. E9 v* R3 R
;;
判断是否给本turtle的评价质量做出过评价的节点
  L/ n0 V# t3 d' J( \( H[set note (note + item j ([credibility]of turtle (i + 1)))- Z8 K5 z  U9 L: R4 ]6 P
;;*(exp (-(people - 2)))/(people - 2))]

5 w: U' q0 K1 }2 i' F1 p, a% cset k (k + 1)1 A0 V/ Z2 X  `- W
], H, R; U" V" I% m: V7 [
set j (j + 1)
% m0 L5 Q1 c$ E) A) [6 ?5 P! G]
/ Q/ [0 t! \& ]& H! S3 V4 O- [set note (note *(exp (- (1 / k)))/ k): ]. h5 Y& G2 ~
set credibility-list (replace-item i credibility-list note)
  r. r7 f$ ~7 S+ n  M+ G  xset i (i + 1)+ _: f7 _9 U0 k" G! k5 x
]  u. L8 |1 L$ Q: U7 a$ Y
end
+ Q7 s5 _% G( c" I4 v+ |, ^) Y% v! ]+ e# j+ Z- G& p/ V* {! g) k5 ~
to update-global-reputation-list; f5 m: o; H# K" f9 o' E
let j 07 s8 A" r( E; g' q" n# C
while[j < people]
7 ]  ~; l7 b: |2 d2 w( ?[
+ J8 g  E: N3 W1 r$ P1 M2 a2 }& Clet new 0$ O, G7 k$ d, w* [
;;
暂存新的一个全局声誉# q! F9 T$ }8 _, U, @9 [
let i 0, J2 G. l& T5 K: v- U: x3 O
let sum-money 0( X7 g$ H" F( R, h# U  b. u; i
let credibility-money 00 m8 u0 D1 K' O* o3 m9 K, F
while [i < people]
4 J& ?, V( h9 m% [" a7 V+ S[
% L4 {( B3 z% R# J  s& x4 {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): G8 k8 o' M6 \, n' r4 i7 c& `3 J3 U/ a4 v
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 B/ Q/ i' d9 Bset i (i + 1)
$ T+ ~+ o, m6 E6 O, l]: m6 t7 V0 x( X# q" x' m4 s
let k 09 `7 ~7 P* P, F( l1 j  f
let new1 0( U1 N; B0 U7 ^% a" `& o% P
while [k < people]
5 I+ k1 ]5 p. f& T[
/ v- E* ~$ U+ u5 pset 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)1 E, j1 {, M) g$ w: g( Z
set k (k + 1)" S4 [# C7 I) w
]
; w0 o1 k$ m, v: Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - S% P  b, [) h- `1 ^
set global-reputation-list (replace-item j global-reputation-list new)
9 p- Q- z! o9 Y7 {" dset j (j + 1); i& O  h  ~; S' ]
]
7 j2 _4 T; j0 y2 `9 o3 mend
" v3 F2 U$ J& _. L3 m6 w( I0 V0 [- S! ?' s

* R4 B$ [+ ^& c, j# m) ]) _
5 j: u) L5 M; n* D* {4 T) yto get-color  |, k, G1 c% o, \" }, M) d

: n. X. y2 P* [" [% D: D4 E2 dset color blue
$ J4 I2 W/ M- Q3 z
end  O( {9 [7 j8 N

" j* l% C" T5 m( zto poll-class
& |* g1 F1 G5 N( qend# q- F+ [, c1 s& }; _8 W
4 L  V/ p6 Q# ^2 R' ^% g7 o& S/ Y0 p7 N
to setup-plot1
" k5 N: R# U6 `3 C( H) u0 t3 S6 D6 m7 ^- `0 I
set-current-plot "Trends-of-Local-reputation"

2 i" c8 u$ W2 y
9 A1 c  o* J4 c* E: Cset-plot-x-range 0 xmax
& {* a; d" ^& \0 V

& G: V9 J4 C# F1 _  f/ Eset-plot-y-range 0.0 ymax
- |# B- N+ b* R; w0 {5 O- G
end
8 E" _8 J: J& G5 h, w* e5 d
0 \& Z: ^  [% c# Q9 Rto setup-plot2
: K: r7 t' y- K  [% |
; n, \1 M6 f7 s2 G$ G6 aset-current-plot "Trends-of-global-reputation"
3 r4 l2 }4 d7 U  S( ?! x

  V; L; N5 @4 g$ ]" eset-plot-x-range 0 xmax
5 L0 [, Y( F/ n0 C) V

, @$ O/ Z" C! N! U* M3 Eset-plot-y-range 0.0 ymax

3 \1 z* y- J, [: q# jend
8 x& n! V, x9 i3 ^+ B# X
% n- a4 t! S9 @& \to setup-plot3
0 l0 F- F: u6 x  F3 O* K2 W8 g$ T' I. \
set-current-plot "Trends-of-credibility"
8 w' K- b4 U, y. v# ~

/ t% A! S* c  ^6 J& K* H+ Mset-plot-x-range 0 xmax
4 i, Z& {9 b/ }. }) l( I) D
- U) N) W3 j- P" h
set-plot-y-range 0.0 ymax
+ J1 `) g# y# }5 v% H, q
end
8 c8 Y4 V: m9 ]0 E; b. b. ?
- m0 \! h  w, c, P  B3 F" Y  Wto do-plots
0 u6 t6 q8 E0 j# z; \# R& j! k( Vset-current-plot "Trends-of-Local-reputation"
" w7 r* s! T5 y5 j$ f0 y! w& s% pset-current-plot-pen "Honest service"
  v! f4 C5 H8 Mend
  K! d2 e$ `5 g3 [
' ^5 J5 y2 P7 b) 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.3 E2 b! R0 s- R# {

1 E6 X# d* V: g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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