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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:
1 C2 w8 K0 {: x7 g% T- c0 Z! ?  Hto do-business 7 `0 v, i5 {1 B7 x
rt random 360
9 N+ t8 a' v1 ?. g fd 1
( ~- b) D& A5 U- B3 \( c ifelse(other turtles-here != nobody)[5 F  x* z4 b6 W
   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.4 q# z1 w% I8 ~+ F, w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 J/ i  }5 V+ H* P7 O) a   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; |7 M5 i/ u- R- S
   set [trade-record-one-len] of self length [trade-record-one] of self1 ^$ r5 B0 _! Y
   set trade-record-current( list (timer) (random money-upper-limit))- u1 H3 z( D4 E$ t' a! ?

7 z) [" w% g% ]. C% i# K% w问题的提示如下:
# Z: C: V, x# _' |0 c& j' U
5 d3 P+ G; p+ N3 Yerror while turtle 50 running OF in procedure DO-BUSINESS! w' s1 }0 E+ G" B
  called by procedure GO3 f1 n) Z5 s& j2 P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% o+ t' B; a- n4 e! o5 p
(halted running of go)
# M. c# }1 W8 B! X, z- Z0 j" Y3 x' D/ R) h8 y$ B  T& n" X  F3 G
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~~
3 Q2 X5 k6 D, d* W/ X- _6 x7 Y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( c' l, c; }- [) d. F
globals[* {9 E# B( K+ M* `; u: F  M- _
xmax+ ~. l3 L8 G  y- {7 X- X" R
ymax! H6 ]6 r2 w+ |
global-reputation-list( w* Z% |/ J4 w3 r8 d" j2 m

4 R9 }9 Q3 [2 w7 ^+ e+ v;;
每一个turtle的全局声誉都存在此LIST( O% f' F  b6 B, A5 N2 @
credibility-list
4 M) E! J! p4 S% Z;;
每一个turtle的评价可信度) A  B* c2 _' [6 }0 }0 N3 m/ b% |7 x
honest-service0 L$ z( m0 M! S4 t0 F- a
unhonest-service# B# X6 |0 k% Z; ?% b
oscillation
; r+ I6 a2 E$ R1 P2 zrand-dynamic
+ q( e3 p) Y# J+ }- Z- _. s]& D$ a8 L& \5 ~, V1 s/ X7 l

9 G6 z  L/ [* L2 T/ ?turtles-own[
# p# U! n+ S) |* ?) U* N* H6 h$ |# Strade-record-all8 F; z6 w7 z; u) ~. `. h. G/ j) E5 E
;;a list of lists,
trade-record-one组成
6 R8 q" K3 Q, r) Etrade-record-one
) k0 ^$ e% _6 a; U- a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( H1 J9 L, j- q' r( t/ k: N

- p* D) K. X# H* s8 U& 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]]$ ^) D# `! F) n+ f/ Q0 R
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]2 ^7 K4 J* W; @" B" r4 q, E
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; Y3 q- `, k. w1 z+ L. Q
neighbor-total
6 w: M/ a- D9 B; `3 P9 h& T) }/ a+ ^;;
记录该turtle的邻居节点的数目
3 ^; I+ v8 ?+ ~2 _) \trade-time3 U2 y, @) u9 A6 J
;;
当前发生交易的turtle的交易时间4 ?2 e- K9 `  M. ~3 G; Z
appraise-give2 T( t8 R# ]* a& i
;;
当前发生交易时给出的评价
% ^$ v( p) s2 R/ q8 h; W( \appraise-receive
" g) L, ]6 N2 `2 p0 E;;
当前发生交易时收到的评价
! J1 n, @' e; ^; rappraise-time
% p3 A* Z4 L& r+ I- r;;
当前发生交易时的评价时间  W* u! I& w6 L3 T# Z! z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 h! j* w4 v* c4 _$ C  n* B
trade-times-total
( @& v; y/ I. ]/ z% \) H/ Z;;
与当前turtle的交易总次数2 N8 Q' R' f" X* j
trade-money-total% }1 }9 B; |7 f1 H  [0 I# y' _
;;
与当前turtle的交易总金额
3 S* P$ ]" k, flocal-reputation
0 }' I* p* \) h  aglobal-reputation. t" X3 A9 H4 R1 y0 ?, N+ n
credibility
+ J) q  P4 z5 [- E; B;;
评价可信度,每次交易后都需要更新7 |, \. {' I3 \1 _
credibility-all( ~. O4 H2 ~  f* `# Y) Y
;;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: J# ~; y, w  O% e9 k
' d/ ~1 D' L" {) H& `
;;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0.58 e8 |$ S- }. V& {
credibility-one8 _7 Y6 N4 n: b! R
;;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
7 g: f8 X' [0 v1 ]global-proportion# g5 r% N; w2 j' p9 G' V, A
customer2 O9 |/ ~( \1 i7 Q& i; i; U
customer-no
0 T/ B0 `0 a, |: z* \trust-ok
) v5 v: V  s) Dtrade-record-one-len;;trade-record-one的长度' }9 I. p' t1 \: S5 Z& {% s6 U* }  J' j4 \
]8 J' \1 o& K" V
; L- n! y: S' ^) g8 Z  T
;;setup procedure( C0 r1 Q$ p# ?+ C' f/ [1 n
$ O; s& t' j* n# f- G1 e
to setup
% }7 O/ {1 t* |" H
! |( I3 I( p+ v$ m9 l' nca

( a! H; A" a) [+ N: K8 p: L- s2 d. M# c4 O* H# b3 X5 S) l8 V
initialize-settings
8 E# x1 g9 z+ R
/ G) R  F' v8 n0 U. t, T! x
crt people [setup-turtles]
& R* v/ Q& i1 f5 P/ r0 j, Z
2 c) t* j' V1 Z" Z! B* U
reset-timer

" R" D8 J3 v' f3 q7 b' {1 ]. N
* D+ q1 b2 d' y2 @/ v9 rpoll-class
4 Z+ f( ~% z0 |- v. g

/ N! W* s# x; osetup-plots
5 x4 J% m+ ?8 a) r8 w- u3 g
3 j# s! T0 }% z2 g
do-plots
( _( b; R: |7 N  }$ l% f" S  g0 Q
end- J* s7 J' ^6 N8 s3 Y# d7 Q

" n% v; d3 _& D- Mto initialize-settings
- r6 m3 n+ N, K8 l) Z! @. }# U- M, |3 @3 g- E, k! ]
set global-reputation-list []
" }- I# m! L2 T) M, z! a( `

+ _! V( O0 T, @) _6 c4 \set credibility-list n-values people [0.5]
0 A( M) G% t3 y" P

% w$ q2 {  q8 {set honest-service 0
, ?1 |/ Q5 M# R- \+ g6 z' Z
, F$ l) o8 ^& |. J
set unhonest-service 0
' D9 Q( Z* b- r+ [8 r- H
: M8 k0 `* e4 d! c( y$ r' S  K# j0 [/ \
set oscillation 0
  D# n" k$ s4 m+ q! [
, S$ _; [6 C  z% A1 l1 q
set rand-dynamic 0

- x- a5 u$ }. u: J# v# dend
# i' z* s9 l' P7 U) ?! ~# @: |* k; j6 f( x) V) e  U$ Q
to setup-turtles " N8 C. ?$ Q' y
set shape "person"
5 S0 W) V3 x! O2 q  x7 }setxy random-xcor random-ycor7 B6 B2 p! a( i5 T( e5 h1 J- }& m
set trade-record-one []
% d/ o: I3 @; V/ b2 [8 z

7 r7 A2 i0 U  E3 q- nset trade-record-all n-values people [(list (? + 1) 0 0)]
* O6 Y2 e' \* _: H1 K; H
, m4 t7 s/ d+ G
set trade-record-current []" [! K. M. h8 A2 ~! Y4 X
set credibility-receive []
0 s1 L8 O" G7 @- a" {' \set local-reputation 0.53 _3 V' {; X, g9 q
set neighbor-total 0# A! ]; U* m% x. `; H+ r
set trade-times-total 0
8 L; L& ~& Z9 z8 s4 N) a2 Fset trade-money-total 0
6 Z9 m5 |% k6 Sset customer nobody
' n4 y9 c6 i" d  C" h6 Sset credibility-all n-values people [creat-credibility]
0 T, k" B- S" }set credibility n-values people [-1], }) A# Y- ^* p+ O6 i( Y+ L  i
get-color
2 P2 E, \: ^- [: \

& t! n! k7 E. ^% Xend
+ h. B# S% O# H# ~' G$ }/ ]6 @2 W9 P" q, ]" M# P
to-report creat-credibility, v6 j6 q( f2 \
report n-values people [0.5]
. d6 |1 J, H9 q8 Nend
& Y6 W/ B) d' n' q
2 v3 H1 h; O7 M' Oto setup-plots; O  i% e9 g% z# j& S: p& @

/ a6 B3 B" C% z! Q6 W  Uset xmax 30
9 f* k8 ?+ u) o, a( U* m
( C) v/ z1 T' e# ?+ B
set ymax 1.0
3 v+ \. L8 ~" }* w5 ]
! H! r8 d, F6 A: J7 t5 f
clear-all-plots
# u# x8 j1 I0 G2 s

9 }6 O. C6 Y3 psetup-plot1
9 A: Q* w8 a# e& E

8 F0 p& \+ z$ q6 Asetup-plot2
; E  x0 C9 c8 C

) |* s8 X2 j4 z. D( d+ m/ xsetup-plot3

- s, h! f7 K! T0 c! lend6 R" i4 P7 }, K3 x0 j
% }; ^& K+ C7 `* F0 L( _4 W) ^
;;run time procedures( e" H" ]/ P; {7 }4 B! \+ }
9 g. g+ ^4 ?  U
to go4 P8 N' n, x9 m3 Z. F; A

% }, s- P4 G* c3 V; v; qask turtles [do-business]

7 K! W6 w' \! ]5 }( u, ~. {end, m( H: Z6 l' j9 X

3 H% i* Q, g. u. f) o% a' @$ jto do-business ; G/ c! C! W9 g! L2 ~& \

. E, c" y" x7 X. h2 H* i* E  J" c, H: j
rt random 360

2 R  W' z5 X1 o+ }& G$ O) F( \0 C& N* g# o" q3 v% n9 N
fd 1
7 \+ U  R+ h" E& q$ O

! F8 z% F* s  d% u0 I+ ^6 kifelse(other turtles-here != nobody)[

# G. \* s: e( t& G" g. m9 T0 B$ C$ k) E! D
set customer one-of other turtles-here
8 y. _4 ~, }7 X2 ^0 \* T1 X

1 a8 v5 X$ H8 k2 l;; set [customer] of customer myself
; D+ V- k3 [+ D2 o5 P( W1 D

6 H8 }+ M# I/ \+ u( L; qset [trade-record-one] of self item (([who] of customer) - 1)
. l, w- e( m; o' C# C[trade-record-all]of self
+ G0 l2 x" X0 I; U8 l8 Z( x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% s+ v% l2 j0 ]# d, a6 ]* f
3 b) o( m4 k6 T4 W3 J0 xset [trade-record-one] of customer item (([who] of self) - 1)
$ c  c. Q; ^+ t% L0 A[trade-record-all]of customer

% @  z$ U. V! ]
" Z# _# t( ~* u/ [. Wset [trade-record-one-len] of self length [trade-record-one] of self
$ w9 _$ M" J9 v
. a- U. V! F) n4 A8 Q& m  p! y
set trade-record-current( list (timer) (random money-upper-limit))
' L2 _6 }7 B' s
- c" w! ]( J' e  U$ t
ask self [do-trust]
8 |, ~4 W$ J, @' ];;
先求ij的信任度
, P( P2 m3 H: \8 V' Z
$ H# ]& M& A' V. [0 wif ([trust-ok] of self)
- R" |. b5 O8 ^$ A  h: N6 a;;
根据ij的信任度来决定是否与j进行交易[
# G# u3 A' j  @0 `4 w& Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; ]3 q5 x8 f& }5 W2 G  n" u0 q! Y, ^' o( z  [
[

1 b( o0 [/ @( V8 F3 e: f7 Z' g& B3 |% |  L
do-trade
1 b! J5 o' k. w5 E9 F% C$ B

. d9 R( j( E! D; Q  `update-credibility-ijl

* G0 Q8 Z) A. o, b) q. U& |$ T& z$ d: _' w' P
update-credibility-list1 t/ ^/ {) u1 N
% D' t4 x8 F: C) M8 _0 Z6 e" w
; \' I) a0 {$ f6 g, [% k7 B
update-global-reputation-list

$ h' S8 {7 z0 l: O  y
5 s: V" R/ o8 M% |$ ~poll-class

8 g4 K) _  E% |4 T% I
3 H* K, w0 ~# G6 B# ~get-color

, X; E2 D, L$ v3 Q& S$ P# Y4 t3 W& Q% _* [6 S
]]
; g/ l" t: F* J0 ]( ?8 h* X  I- x* }6 i/ |. d/ _- C
;;
如果所得的信任度满足条件,则进行交易  u* s0 w8 r# ]9 X$ N, X& J
2 F3 E& c0 _3 N5 v+ L
[

2 ?3 j+ K+ `# q" M. O
. K. i# D+ W+ _8 a) S* ort random 360

! n0 j5 ?- I  g- l% g
# n$ l6 D1 n8 d5 i& \fd 1
# T  u, e7 {* f2 u! A
! _6 |/ F- }$ U( B& |3 {- h
]

; W+ @! o/ g1 p
3 p( _- p- {7 o( K! \end
1 S/ E3 w) b. d

* e/ J( l4 t% K. ~; v% v$ dto do-trust ( \: ?7 o9 }" ~* {  [3 M
set trust-ok False
* ]) _8 ^5 j2 c2 Q6 a, X
2 H$ o/ X0 U, s! G

* w5 ]! B, A, O9 J, P+ ~& z0 Jlet max-trade-times 04 Y+ G' w+ M8 I- m$ @5 x* f
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 I# }  b4 V5 E' P! Rlet max-trade-money 0
2 U3 E: l- k" P* Q. U5 p& ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, f: o: \" K4 ?) Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& B$ f- N9 l8 |( U8 r' j1 a/ K
# B" p$ }* z: L% Z
  s* x. [2 x8 p3 c5 O2 q
get-global-proportion  w# u- H9 `' a' C, e# A6 K$ ~* Z
let trust-value/ ?" |! L+ r& C  |5 Z/ p% a
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)
* K; {5 i! d- o
if(trust-value > trade-trust-value)4 U4 J6 F5 e; K9 v6 k
[set trust-ok true]
" Q- R6 ~# o' {; lend2 y0 l3 v7 t  k- `, U' }

! }5 M" @: L4 k8 s4 w% Bto get-global-proportion
* ], I7 s& p# }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! N/ h9 i% E6 t, B/ Z" Y$ T( |6 H[set global-proportion 0]+ r' a4 w3 o* O& W" b4 Z6 S$ F$ n
[let i 0
% b: ]. L- B# v% [8 W: Y& u# p. qlet sum-money 0
$ t* y/ L; l  Nwhile[ i < people]3 y* t8 Z6 P' G0 y4 {
[
  l, d& u- m1 j2 x8 k# jif( length (item i7 Z" h1 C- I8 _; R
[trade-record-all] of customer) > 3 )

7 `% w5 ]) F3 W; b( s- Q[& e( y+ ~, I1 E) `# L. Q/ w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 q3 I9 j+ A% e3 X" ^]
1 @: d  @, ~7 Q]# B. W1 x9 C9 _9 G/ b1 M% p0 i. z
let j 02 @9 T6 @9 ~5 M5 f
let note 01 S2 `2 G- C2 ?/ Y2 C  n1 I. E
while[ j < people]
4 T& z9 Y. j$ ]8 L0 P/ _- h6 ?7 n& p5 `[
5 [" x* s! `5 B$ M% Eif( length (item i5 S, d; {4 R6 L5 J, |; k4 j* ~
[trade-record-all] of customer) > 3 )
' _3 a7 ]: @! g' S2 t2 L& ^
[. ~) y; ^$ w) D) e# k6 @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 Y2 p: V2 b0 n  k$ ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 ]! h; J) N# V; J2 V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! E' [# R6 _  p- o7 Q( k% _: s]
0 h- c) P0 n* q: J5 f# Z]
3 p- l5 C2 o3 C* h7 xset global-proportion note; t9 T1 [: x0 q. @3 k
]
" p5 k% ?$ F/ ?7 n' Y; Vend
0 g" P  D% {0 m9 ?
# e% [3 ?7 c3 r. ]5 d, B( E! Mto do-trade0 w1 ]) M, q  e* b
;;
这个过程实际上是给双方作出评价的过程
0 ^3 `2 i6 D1 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 C& m1 V( W/ z( H' R. G6 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& }4 c# O. E& q+ ?- W) u
set trade-record-current lput(timer) trade-record-current% n: |& ~9 E: d. N) Z5 u
;;
评价时间
! ?& m6 a+ o' xask myself [
$ Z8 r, D9 n: H8 r2 B% uupdate-local-reputation& R9 x  K% e, O1 |
set trade-record-current lput([local-reputation] of myself) trade-record-current
) {: I' R& i/ S# `  G]
/ a8 C+ U3 _. ^: y5 `& u: Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 Z  D( A4 v" P
;;
将此次交易的记录加入到trade-record-one- s% a/ w2 K+ X- x4 J( U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 Z  Q& L5 p& Rlet note (item 2 trade-record-current )
6 _! N0 A* F' {set trade-record-current: s& g  B5 c+ V: q! W+ Y
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 f1 i2 A- N) J5 G
set trade-record-current; I) o6 v5 n1 ^# M
(replace-item 3 trade-record-current note)
5 E: B: n6 M: O. L" l9 O2 f- B3 d& _* R5 R
; a* z7 J$ T. l5 [. a* {) }
ask customer [" L1 \$ n/ K2 d' I6 h) Y- [/ q
update-local-reputation. r! u" N% h( P
set trade-record-current  j$ u% S  @2 w0 R6 q5 u
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# A( ^  {' s1 B6 w; F+ o
]
( w4 F; p$ `/ N9 k. W3 U
4 v5 I$ \, U! L6 A4 J) ]4 [

5 ]0 n: W# P9 J! H$ M' n0 oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' v5 P! D1 W0 H! g! w2 O

; U' x$ k5 v2 h0 w0 |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ e8 h( B9 e9 R/ `
;;
将此次交易的记录加入到customertrade-record-all
* v% H& S  F! k; _0 I  y/ L, aend, d# V* I0 S% s
: k' R, x/ n% r8 K" W
to update-local-reputation
3 ^- X. M7 T/ [0 H6 gset [trade-record-one-len] of myself length [trade-record-one] of myself
- O/ g9 i2 ~+ n  f0 o: A1 a! U" V1 D- T/ j9 @2 K8 b
8 [- ?7 H# n) T7 m3 i
;;if [trade-record-one-len] of myself > 3
7 _( [3 s! J. ~" v
update-neighbor-total# ?1 w) Z" m/ {2 F
;;
更新邻居节点的数目,在此进行/ E% y, @: f) V" ]. z
let i 3/ M. V5 N" C( i$ [
let sum-time 07 p4 p# d7 e1 b- Q# ^5 v
while[i < [trade-record-one-len] of myself]
" U- s2 r( F( |9 v  f5 u2 M8 A8 a[+ ^1 {6 U, w# k  z. s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! n8 |: N1 C# xset i* G% _. r$ z9 j
( i + 1)
) r* u- D! D* l8 V8 L1 x
]
) {) n( B; p; N3 G4 N, Z5 xlet j 3
4 i- B' ^$ k. x! Q* t! y; flet sum-money 0
0 M. t" r" I) b+ Dwhile[j < [trade-record-one-len] of myself]( Y# o/ s/ U8 Q: k
[' M' E$ H& M' N7 @: G5 ]4 I
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)* `2 X7 D- h0 C7 G
set j
# d5 D" s" @# `7 G: E2 ?" L2 e( j + 1)

' z+ p- X5 y" S, M]
1 {, v+ b9 x$ @$ a( Xlet k 3' H- W/ c5 t  K% Z0 W1 N
let power 06 H8 T8 V2 C! _* C' ]8 o7 U8 J  F1 O' U
let local 0+ O3 L% H0 g; J& N- [( M  A! ~6 n
while [k <[trade-record-one-len] of myself]
7 W; A- N* }  h$ K: t, o[
7 G& D1 c2 J9 A$ \7 @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)
* L# \( d( g+ R6 M2 Sset k (k + 1)9 c0 B' S$ u, z6 @
]6 X8 i" V6 Q. }& I5 w# z2 g  T! X
set [local-reputation] of myself (local)' Q# V" p) c9 s3 [3 W2 w0 z
end
9 V! @5 F! n6 k; u; j  L
: T- ]5 S! z  _3 M" U. g7 D" X# H% Zto update-neighbor-total
* \/ ~# n' Q* s7 `5 v
* M2 I6 A! V7 U3 zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 W, ?* w. s3 T( ~, K! E  g9 q+ o% d: \4 `' K: ?& v5 E
, ]7 [* [- u' j3 C: f
end+ l! Y$ }/ ]7 A" D4 Q
, r. o' [9 d) L: z: h! N
to update-credibility-ijl % {1 @& ?$ R( {6 X
7 A4 O( W2 _' R) r" 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。
  Y' G5 f- k4 c: F4 k# alet l 0( g( |8 t2 y( G; W8 |$ S5 t
while[ l < people ]
3 Y0 t: Z( v5 O" P4 |;;
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& V, V& x3 o. V$ b9 e3 ^+ F/ {
[
  Z; C: \7 `% K' G# o8 p. vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, ]! @7 j' f) B7 v2 Vif (trade-record-one-j-l-len > 3)
. W: H- K5 o! g/ M0 K[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
  M! p) }  m% L. a* ilet i 3
+ H: O/ k) Q& {( p: T; jlet sum-time 0  l, x" x6 J: Y2 P7 d1 q7 n
while[i < trade-record-one-len]
: X% j- d6 k: p" S) d[. `" B0 e+ T" D' C3 |$ Q7 f& j, g* y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ c6 p& A' e" O4 S0 G$ c0 i5 oset i
/ w) }1 a1 |5 l8 ^( i + 1)
* g' K$ @( E" Q' h% d
]
4 }0 A; U4 h, }+ w* w1 _let credibility-i-j-l 0; T3 I- l2 ]! F2 y3 |
;;i
评价(jjl的评价)( g3 u" G$ X( _
let j 3- H/ `' m8 Y) A" c" C( K
let k 4
% s- Z4 |' p6 {while[j < trade-record-one-len]
$ G* q/ w/ k* o; G' B/ Z4 f[
5 K3 p: x2 T: c7 i, v! Y# H" \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) G9 c0 z' l, t8 v5 `: s9 m
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)
% c- C1 c' c( }& E( u# gset j
7 s  L$ K$ G/ {! N2 E( j + 1)
6 h4 i  |" L- C9 k6 i- v, L
]3 d- Z" T; _: V3 l  f* p
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 ))
3 Z) {' ]2 w$ ]6 o- Z* o! n: E
, H  i5 a1 o: z( d, \. W

1 G& G& e; S, d" R+ l2 N+ z1 Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) D7 |3 X" m6 E* `; a) Q8 c# X;;
及时更新il的评价质量的评价1 z5 {5 L6 Z* t; D, k7 \7 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) {* r$ \8 E& b9 d/ \* zset l (l + 1)
/ A% O0 P7 _. L! o5 v6 m+ x) S0 ~- Q- q]
3 [/ p8 r* t" xend5 s6 O" O8 p; b( p; {) }" q1 B6 b
* z' f* s% ]8 }+ G1 A
to update-credibility-list4 E4 P: }6 s  C$ g2 \0 F
let i 0( k6 B+ a# Z) x. Z4 G, D
while[i < people]
2 g( l. i6 H- o: [2 O/ S+ ?5 q: d[7 D1 P3 x1 N# Z. H" k# U, k4 _: [/ e6 R" V
let j 06 k% I5 Z3 T. v  P# I
let note 0
' y' C4 c/ }) G8 Vlet k 0- Q8 K) U! H" t
;;
计作出过评价的邻居节点的数目2 S: h- V6 v6 Z+ ~
while[j < people]! e$ Q" P+ `! m  S! z9 `6 s4 _1 V
[
( O2 i& m* Y' u$ P' W, y% s* Aif (item j( [credibility] of turtle (i + 1)) != -1)
% C4 K0 S4 H9 m$ o! G$ V1 _: a;;
判断是否给本turtle的评价质量做出过评价的节点
8 b/ ?. N* R7 j7 f5 j$ P9 N[set note (note + item j ([credibility]of turtle (i + 1)))
# [. M, y" H- I: J; w0 E& I;;*(exp (-(people - 2)))/(people - 2))]

% _, @3 b, A+ y# S6 Cset k (k + 1)
# n$ b$ P) S2 d1 k, p4 U7 J]
! Y' ?; K" g& N& q( m& L9 |% H% bset j (j + 1)! d$ D" W- z6 u$ O) n% b4 `
]
# P4 Z' X0 ?! Q$ nset note (note *(exp (- (1 / k)))/ k)
! ^, N  {+ K  nset credibility-list (replace-item i credibility-list note)
  @) P& A  @0 A* x/ B; q+ hset i (i + 1)
; w5 z5 f/ m+ b0 l& J]
- e4 m6 }1 U! i( |7 G$ ]- }end
# ^+ M9 J3 ~+ N1 M+ Q2 J1 D7 W5 m
) Y& U" A1 P- g0 b7 G% W: {to update-global-reputation-list
6 X( Z* L4 |, Hlet j 0
. Z1 D& {* _" a1 t1 iwhile[j < people]
, E: l" q# J8 {6 \+ a5 u[
- m6 N, e+ m  e; c3 `9 U1 y! jlet new 0( ?. c7 v% V4 U  P! w
;;
暂存新的一个全局声誉6 g; `3 `6 I$ k- a" `4 L, [1 X
let i 0
. r9 r' ]9 K; G5 B& B& p+ X  Llet sum-money 0- K3 J0 K% b9 s+ @* N6 k) @
let credibility-money 0
# M7 z- ~" d" y0 N% g4 T( Fwhile [i < people]
; k$ c. f$ \3 F4 L0 j7 Q& c8 }; M[
* j) b. Y9 x- c$ W$ h. H+ [- Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% G% m( ]0 r) H1 K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 K, Q% V* p+ S% x  i% b% zset i (i + 1)
( k" E3 S, f$ |# @]) Y, \" }% g# t& Q* `
let k 0
, {0 t, X% E* x$ nlet new1 0: d9 e" k0 P) C) K5 h
while [k < people]
. @& Q; F' }& ~& p[% n& A+ T. r5 A* Q6 g, |. l9 y2 K
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)
  B+ [, h3 o# ?4 N3 y/ O6 j  ~8 A4 vset k (k + 1)
; i( M1 Y& x4 e$ z7 u]
( f* ?; G7 I! k6 r  sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& G  W/ M3 |. b$ m6 y- e5 |$ `# X' ~4 ^set global-reputation-list (replace-item j global-reputation-list new), A) d  F% r7 D) C
set j (j + 1)
2 w3 S' p8 }4 Q# K4 m6 F: ~2 p]
; X& q- g* R' oend; m, c$ G' z5 B
+ @9 T! U# l9 I
8 V+ Q/ \" t9 x2 B. ~* j$ s
) f. E+ r5 h8 r% Z( l4 C5 p
to get-color
  O& j5 T8 k6 [8 b& F/ l+ S0 ?' v$ S  ]( N; }
set color blue
$ [. U, E% H: Q* T* T
end
. [& G0 p$ M/ C- j! d" A7 R; J  B0 {1 z' A
to poll-class3 `5 f- `# F, j/ k3 V5 a) s( F
end
2 j3 k; H0 Y4 M5 [5 e  o: `: i1 Y$ m8 w2 t9 y! z
to setup-plot15 i$ K/ Q8 l+ f# j
" F) z% f: A- B4 J7 r* x" Q) G3 M
set-current-plot "Trends-of-Local-reputation"
, @! G. ^% H8 E8 Q/ h
7 H9 `1 t) x) }
set-plot-x-range 0 xmax
7 Q* ^0 v9 N+ T/ Y. h) ~% }

" C+ F5 w2 ~; K2 Eset-plot-y-range 0.0 ymax
) I7 o8 v6 r, @) o' _" \* u
end
9 M+ c, d& j5 f( B
0 }; k( ^" w6 s1 M3 w: X' A2 G1 J: {6 Bto setup-plot2, x3 s8 H  n( [# y% _% G* v9 n
% U: f0 {* U0 F/ w
set-current-plot "Trends-of-global-reputation"

4 d, T$ ?, U+ s/ t0 d8 O! O7 ^8 b6 P4 u/ B5 C  G
set-plot-x-range 0 xmax
" R6 B7 B4 `1 r4 s

5 @1 z2 L0 i) Z# W& xset-plot-y-range 0.0 ymax
& \7 c+ d6 \3 ^, g' @! F/ w
end
7 k5 h) s' p9 J  J2 E7 ]8 ?% \+ X) L$ T" ^
to setup-plot3
0 @- W6 i3 U2 B" s2 n5 z$ b% H, k7 q. g9 P  G) E6 ]/ d$ b$ s
set-current-plot "Trends-of-credibility"
: l+ m# u0 R# H3 c7 a' [- \) y
% T) \- w& w: B6 e$ l8 c
set-plot-x-range 0 xmax

2 z8 N0 m" g+ d% k* j! U' e3 K& E' N  y( b4 a
set-plot-y-range 0.0 ymax

/ c! H$ I* d8 _, z$ a7 J! h4 S! zend( _( p: |# ]0 t  b) o6 F0 ~8 D
4 E  ^$ O0 o% U. E1 r1 E  K) ]
to do-plots
$ X9 t( B' e7 u, w! Kset-current-plot "Trends-of-Local-reputation", Z  f* }5 Y3 }& e- O
set-current-plot-pen "Honest service"
) a8 o3 C6 ?6 W8 w, Iend
* @; q9 ?! Z3 Z, r- h3 i: z  D4 A+ N8 J3 l& G, k/ a- D
[ 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 e6 U4 y; R5 _2 q6 T  ^; C6 Z3 u
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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