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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:6 d, v8 P" n3 @4 M- \* N
to do-business - B2 q+ c* D- C: M9 s# t0 G2 B8 Y+ B% r
rt random 360% g$ k1 ~; a3 O% [
fd 17 }( N* F' P; o0 x* I- i
ifelse(other turtles-here != nobody)[1 J3 W9 x1 d$ S4 T7 Z
   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.) ?1 `1 W1 N, l  o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" i: L' Y1 d) e6 j! @  ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 Z8 o. a) f! B  k% c* ^% I" |: r
   set [trade-record-one-len] of self length [trade-record-one] of self
, l. Q' k1 g. k2 w   set trade-record-current( list (timer) (random money-upper-limit))' N2 Q) w1 \4 R, N$ }1 `4 I2 R5 z: l3 f

; b! q4 G  Z# @1 s问题的提示如下:! _# f1 Y5 a" A: O8 W

' n9 Q! E4 B. }$ @. l! eerror while turtle 50 running OF in procedure DO-BUSINESS
& ~, N2 C; m) n# {$ ~/ D  called by procedure GO/ \4 I& q6 Y# f0 A0 b/ z" H8 L
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. K1 P7 D* Y5 [" D8 Z9 A% J
(halted running of go)" H" s$ R$ s  ^. u' H4 ^7 k

: ]* ^) B- ^' }4 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~~
6 L9 ]( Y! |9 @- r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7 C; q  X+ d1 d( V' z  _
globals[3 w) l4 g& \: s7 c  A
xmax8 B% r1 L" N4 |
ymax
% ~# ]8 K. A4 x  j/ I3 R4 Y) sglobal-reputation-list
' z; m9 o- b- n! C2 ~* n3 w& M! c# S0 T
;;
每一个turtle的全局声誉都存在此LIST
; G" I5 @$ D% tcredibility-list
/ A( n1 i1 j3 N0 f  s;;
每一个turtle的评价可信度
' F, e- ]0 T, ]6 V: xhonest-service: E! V% C# u; E( b: u: |' |' q" s
unhonest-service  A4 r. g- Y: z5 B4 X. A& x
oscillation
0 A4 z8 {6 A0 k( P/ Grand-dynamic
4 u: ^" ]1 e; Y! l' d0 h* {]- f! l- M$ N: m

) \; L" b; f) b9 M$ g, Iturtles-own[1 q* q9 b: n2 m1 {1 F$ @+ [, b
trade-record-all
/ ]# l4 Z* _4 g5 n;;a list of lists,
trade-record-one组成% n( s) w6 q3 q# ], P" p$ v
trade-record-one" l$ x) D8 x' z' @& }% `1 |: 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. b- g2 V, Q& G2 H
& ]: \; p* G8 N( U' c5 V& U  y' P
;;[
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]]  e9 e$ c8 t$ F3 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]& ]9 Q: p! E& I
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! F. W+ Z* @% }. n
neighbor-total7 U- _% H) m8 }- }+ w: }9 U
;;
记录该turtle的邻居节点的数目
; _0 L: d; p. T9 g/ Y! O9 jtrade-time+ F7 c: l8 u4 x! ^  ?5 `, d
;;
当前发生交易的turtle的交易时间
0 _1 i/ A" [' g) |appraise-give* l' w% V% v( \7 q' g  P  c
;;
当前发生交易时给出的评价
- Q# g% u- e" n5 {( G/ @' Sappraise-receive- m4 w/ l+ |' `2 r0 y9 Y! E
;;
当前发生交易时收到的评价9 n9 m8 x7 I6 o: M. h% B# Q" c" ]
appraise-time
( _3 o9 s- z6 i6 e. @;;
当前发生交易时的评价时间
, w5 i: @* k+ Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) V8 g, g$ N4 H: Z3 i  n/ ^  ktrade-times-total6 S) X. j- I1 A8 ?& Y6 V0 R
;;
与当前turtle的交易总次数4 E# f5 {# ^) P
trade-money-total, |/ M5 [2 V- r9 l
;;
与当前turtle的交易总金额
; l( j# U3 `' ^8 E# N5 Llocal-reputation" J. l0 d" K) k3 U; I. [. b
global-reputation% G/ G2 V4 F7 n
credibility( {6 n, v6 U! @: @) L
;;
评价可信度,每次交易后都需要更新8 D. ]" B2 @4 C) U& F& y# f  d
credibility-all4 ?6 K8 ^3 j  ]4 g- p7 Z4 A
;;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+ t# F, ~4 u* y# R( V6 w

2 n  d6 w8 f2 H: f;;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
5 {7 u+ ^! [6 Q& K! Y. q8 h( @- bcredibility-one
. y% i6 T0 E1 Z! t1 F/ 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people7 w1 v: ?4 Z6 p2 G, t
global-proportion
6 B5 ~- u# N  X8 ?) f: b# A, R# Kcustomer
! j/ Q5 [* m: s# Lcustomer-no! |6 `7 I# K# }
trust-ok: n0 M- J8 M! F& q7 v6 m% @& f
trade-record-one-len;;trade-record-one的长度, ~# U" p( D1 M. `
]3 g! [8 z1 P7 R- e9 A7 P. y. b
7 [3 Q) P) ]# R0 P7 L1 U* l
;;setup procedure
. o$ b5 v; T( d" \# Y3 Z$ o+ D0 V* V3 |( s# x7 i" }/ r0 F5 I
to setup
0 n+ x- u9 s  V' {3 Y: m6 h9 E
9 T2 O, Y/ x+ M: kca
2 D7 \3 r3 w  ]: Y2 ~$ E$ D& b, A

! i3 O% z; Z- _$ H' T2 J: dinitialize-settings

9 Z# m' ?) ?+ ?( |7 C6 X
8 i* O8 Q  T& a) M& `- U% K1 h3 hcrt people [setup-turtles]
4 i* l. B" m4 p7 n! t" r0 H' {  E/ k; h& h) H
  Q% o  j; _/ f0 v+ s1 [
reset-timer
) k; J! u$ v6 u& r, T5 \
# C! B! o, G3 ^, U! H2 r9 d& F
poll-class
6 O* i2 g; `9 O4 e9 F4 t" u" x

) |. p! n5 M* d( f, X' @setup-plots
* S) f' x  f8 j
, P" l+ Z) z) n
do-plots

+ J# V, w7 H' K5 e% W1 uend
# o( Y; ~# I- Q+ @: l0 ^" V- @' S/ c5 |" D$ r5 @' D$ A  X/ [
to initialize-settings& h: ]* M* W5 ~
+ D$ {! F- m6 g1 v: b1 s8 t
set global-reputation-list []

4 n' u: u" s' z7 t( T3 `' w0 Z* A: x, G  U1 t0 |" P8 `6 L- n! r7 L& D
set credibility-list n-values people [0.5]
2 e4 M' O6 @1 X
1 }" ]+ e' }/ \% n; u  l  h
set honest-service 0
0 B! H$ a. x7 ~5 Q3 l
9 n% H( x# k$ @. ^
set unhonest-service 0
1 m3 R" t6 h# ]* c; N# [

/ h! J  L2 y1 W; X/ B% j8 |set oscillation 0
0 q& Y% _! ?* B' o! C& ~( ]7 z
+ c' l& K" K6 M6 e
set rand-dynamic 0

# ~2 o# I2 U* r0 ^end6 H+ C: }8 k- A8 E! T; z
& @3 [+ q7 M! V5 u' U4 S
to setup-turtles
5 z2 b5 @$ x8 h# Q6 v, t5 }set shape "person"( S5 g% o' [8 t; N5 \1 b2 o) m
setxy random-xcor random-ycor; R# m' ~4 _6 b" Q: P
set trade-record-one []3 V. s9 ?: L+ X: ?& u' ]+ J0 H% v/ s8 }
) z" U, w8 D7 M
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 D+ c7 _4 E7 ^8 j; n9 U

2 a" `& v4 [* _8 Eset trade-record-current []
' @4 T& P5 P  Gset credibility-receive []+ `+ `8 o  ^5 x( o! C, Z" k
set local-reputation 0.5
8 O6 y/ j, m7 U: y. xset neighbor-total 0- g; ~8 h2 v: C$ B2 G
set trade-times-total 0! u8 l. a# r4 d6 r( i$ y. h
set trade-money-total 0
( E8 x' F1 M( F$ I. m# pset customer nobody7 f$ @8 ~- D, _: T3 ]5 o: V+ q
set credibility-all n-values people [creat-credibility]0 a7 f0 F% H+ R0 p
set credibility n-values people [-1]
. N) T5 r0 P3 E' @( _) s4 l; hget-color
# x! {7 m$ [% q# f

1 t5 F  j3 h* h" Gend( e" c2 u8 j2 f* i/ p% F

: Q$ x7 N! I9 ~8 v8 e+ uto-report creat-credibility$ P! b- b+ b5 d1 p- F
report n-values people [0.5]
% B, ^) e' ^% E3 Yend, t3 Z- `; `/ ?2 \$ d4 M
/ r0 L  G5 S& \$ h
to setup-plots; K4 J, B, v: R# L8 d, W( H

; a) z. c* X/ z: s' H* K# gset xmax 30
# E; F8 r* S- ]8 O, m6 i" Q8 g# _

4 v. X  l0 P# T9 E8 Cset ymax 1.0
. p" b/ x7 V: a' m0 D

% N/ i$ N0 L" w) dclear-all-plots
1 Y7 j$ e) A3 j. _0 [

9 ^# h' ^$ c0 E- o: j* jsetup-plot1

4 L1 X& q+ |$ n1 T2 q
) t) L5 b/ ^# |$ V+ \setup-plot2
& h. D# f  k+ V- t
2 l3 ], N  T) L& K; w3 O* m
setup-plot3
+ w+ |5 a! N2 B3 n
end7 H9 O5 K; I7 I. K/ T

, @3 w1 B1 C8 o) [7 p% Q- L/ y;;run time procedures
6 u" A: W+ {" J' S8 t4 C2 Y# i% e; P
to go1 A: W( q' Q/ R0 K+ }) Y

  m4 a! w  c& ^: z  D( hask turtles [do-business]

: \3 h+ b7 g" oend
/ j0 O  ]) r2 L& m& w! g
0 o* Z4 P/ G( y7 ^! r& D; |/ Hto do-business 0 Y9 l, E3 n( {/ W8 D
! }* s* b$ R- L! _- q/ r
1 d9 C, c1 K) o" M4 q
rt random 360
! n- _1 j0 l" l

0 \1 f: \/ O/ Ffd 1
2 o: [- h- ]- J4 w
( T" A# W. @0 B' O9 |5 Q
ifelse(other turtles-here != nobody)[
& l% f# A! c- n# W" s) Y& |  l/ U
1 W6 E! K2 L, W" Z# g
set customer one-of other turtles-here
- w: |+ q! s6 G& A; A$ e
# A2 D: ]" Z$ J0 f1 x
;; set [customer] of customer myself
4 Y4 L0 p7 G! u! \4 w
; f/ `: j" F$ E! F
set [trade-record-one] of self item (([who] of customer) - 1)
7 g' N6 g( ]' c. R+ f8 x[trade-record-all]of self1 _% s; q1 n* C' [1 M+ Y  g2 U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; p. d3 P. Y, p2 [$ T4 Y( k
! [8 ~; k+ J# l8 z. ~" [
set [trade-record-one] of customer item (([who] of self) - 1)
, i( L  i' K8 t, `% o* C+ s[trade-record-all]of customer

7 v" a2 H: `: z2 `! }" U3 |2 j
" X2 Y7 W8 ?* r- s8 r# ]8 D9 qset [trade-record-one-len] of self length [trade-record-one] of self
9 d' l5 ~3 k$ e/ ]/ j
* A, Y: h4 G" a! J0 y; |
set trade-record-current( list (timer) (random money-upper-limit))

9 I  w4 i8 o2 r" d
8 p4 c/ e% I, k6 \0 R' Y8 q8 O: J. Pask self [do-trust]" ^( Y  G% l* A, w5 M9 F+ c/ `
;;
先求ij的信任度
7 R4 t6 q1 B' H6 o2 a
2 O- V* f1 J2 v- |: M+ }7 ~if ([trust-ok] of self)
% u" W5 _, H: K4 h8 \;;
根据ij的信任度来决定是否与j进行交易[
2 o: G8 g- Y% ^" k4 dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# j& r; _  g5 k4 E5 ?
$ Z7 y7 _  e- K3 u4 W" L, {[
4 I9 T/ Y$ G' O

4 D# ]! k7 ~2 A# [# [4 jdo-trade

  u2 n# F% \! t& Q+ d6 A4 z! x; i9 n! p; y
update-credibility-ijl
! c7 i: G+ @7 @+ u# f5 v
, h- o9 j9 }3 u% v3 x" n: C
update-credibility-list
; i, e' f% d5 P. f  d  M( N

. x% j8 N( T/ \  U8 e; z
$ ^+ _" ?0 @0 a6 gupdate-global-reputation-list
- l5 i3 F1 c3 [4 ^: E- s) w

/ f0 `8 T6 l! O5 y- u1 F( s, [/ [- epoll-class

3 e: E. k# Z) J# }' z8 Y) @4 e* x/ H6 ?$ k4 E) ?9 w$ k: v  _- B  _
get-color
8 f& G) }9 l- q+ k6 @

' ^7 J- I$ L# I]]' X+ i5 [: V/ a5 y( p: x, X% l
( e. Q9 d6 s5 G9 b- d# w
;;
如果所得的信任度满足条件,则进行交易
1 ^0 y) l7 M/ R# \. [3 e
6 z9 h) @' A/ p/ `1 s[
* l; g" v4 Y' U9 j6 {6 q
, R& m% o8 j& k6 ]2 w  q+ g* K
rt random 360

7 T2 A4 o$ z: }3 K: N
6 V+ G. N  @+ Q+ @6 Q. xfd 1
: I0 L8 _2 i: G! `
3 @- M5 A# j8 f# ^/ f7 s
]

1 z, u2 n# r% d9 f, D4 @0 n, y# |- U' u  O8 q& v; G$ _
end
9 n, T1 q# b3 n7 E, b3 E

, R! v# F* O% d" i& vto do-trust
* z3 ]) ?/ T4 T" M, N! Y3 k5 cset trust-ok False
/ s- b0 ?( D9 i0 t! }
: q" j; \- z' ?0 P
5 ^0 |2 \( R. e% s4 H. b  C6 @
let max-trade-times 0' y) a  `5 N6 V; f9 a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 ?$ F) P5 c/ {$ k, c$ jlet max-trade-money 0* E. C. a: R+ l* I# T1 Z$ V5 A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; o+ u$ M2 g  ~) }# a$ u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 e: z( L8 y0 S/ }! }' o0 {9 s0 Q1 c
9 [5 D9 `3 m( T) V, ~( L

5 {' v  ^) t3 D9 H/ Cget-global-proportion
* S, X/ T1 k1 Klet trust-value
( _% j+ c, `" Y" [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)
9 r  h, a8 K4 T
if(trust-value > trade-trust-value)
; L* U% s# A! _% h[set trust-ok true]" [1 Z* r3 j# \4 `
end9 T( X+ K; h6 H! m. w

  e/ W- `' r6 O& \to get-global-proportion2 m$ R( B9 C1 ~5 g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) c3 D8 Z. p; o$ e4 L* W' L9 \
[set global-proportion 0]" s: [* E0 E. j7 C8 Y1 n0 A
[let i 03 r; x, w2 m+ Y  s- y' A* H: m
let sum-money 0
( e' j& k2 X. Z. z- ?while[ i < people]) U9 w7 l5 W8 F- w" \6 f% }- \
[1 v$ |. [  i+ I$ |9 B
if( length (item i
: \  h' l! q! g. x8 U) C[trade-record-all] of customer) > 3 )

& h8 {5 L* A0 p; l- h) N[
! |6 q3 }  z% oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, A% A& |1 W2 w+ {9 y]/ g5 F) U% j$ N. x
]
( }- r8 }1 Y& G  tlet j 0' Z! o7 }6 z& [8 N5 S- C
let note 0
+ H  e. m& ]8 gwhile[ j < people]; _6 C* r- [4 h3 G
[
8 W) y8 v7 O' ?' Nif( length (item i
  N2 e; r4 \- a7 g& J[trade-record-all] of customer) > 3 )

) g% a2 z, ~8 I* k6 p& a[! p, g5 H' |& u: f4 F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# X+ e5 y8 V( j5 \) }) s% G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  \( ^& H! U* p% l! t[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 T) Z9 S% @9 h% u]
+ H. u; a6 B1 B7 c; x+ Y]
9 M+ o7 k7 H0 v& I3 s% ~2 d. K" lset global-proportion note
  W( T) {( M0 t, @/ b' x3 `3 A]# ]7 S6 a3 p1 t9 w2 Q
end2 O) T5 @! G5 b0 @0 J/ l
: u$ l9 S. V  m. E/ G! ~# L/ i& B
to do-trade3 L6 ~4 Y1 E" a" L6 _0 i
;;
这个过程实际上是给双方作出评价的过程
- u: }. h6 e! b& D2 N2 N" s1 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, \! O8 L4 G4 S/ e/ b+ e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: }  D( q4 p# V1 Y6 v8 G
set trade-record-current lput(timer) trade-record-current
& w& v& _1 s# f/ [9 T;;
评价时间
8 U6 x: J* N- E6 }4 c- M% N  kask myself [* ]+ p+ q) M2 g, k: `5 f
update-local-reputation
0 {+ A9 V5 f/ L" M* l' y8 bset trade-record-current lput([local-reputation] of myself) trade-record-current
3 ~% p& b4 d. G]
9 f6 ^1 P! c% G+ u5 H% _6 @  |set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" v! J+ e( @2 X' R
;;
将此次交易的记录加入到trade-record-one
  G- [5 g9 e6 m& f6 W5 u2 \4 cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), Y: f6 r; y* ^
let note (item 2 trade-record-current ). p/ C; E; v( |  H3 U3 G% n
set trade-record-current
& X6 b/ b7 l% s' a8 w3 H# Y8 S(replace-item 2 trade-record-current (item 3 trade-record-current))
2 T' O7 e  ?' @
set trade-record-current9 U5 E' q5 z5 g, B7 Q% q
(replace-item 3 trade-record-current note): p( B8 r: |6 n( Y
, X( G) ]& q! Z* S5 b% u
5 w3 @4 q7 w5 I" l# H
ask customer [% P! r+ T+ z6 Q, q* u7 J
update-local-reputation
2 A- N! }, S2 Y& d- {1 A0 U  rset trade-record-current* M4 Y% I) j( o9 y) @$ l
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ J! A! V2 _. c9 h8 h+ n]# ^. Z3 u* Q0 [
( I) N( H3 d( J* L- k0 K; h3 e5 p
& I& X$ T4 C& n, E$ e% V7 y* Q7 p7 M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 n, G# L5 {( h

  q  L! k* f& Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# Z; ~1 K3 D5 D3 F1 N- Y6 W;;
将此次交易的记录加入到customertrade-record-all- h" A8 W" R" |3 l* `
end1 k2 L0 s$ N# S/ I8 N  ?7 B) Q
9 E) f7 s0 i" e" Z( @5 b) @
to update-local-reputation
% y* q. V$ i3 c, ], y( wset [trade-record-one-len] of myself length [trade-record-one] of myself: `: n1 e, |) Y2 a) j. J' f( v  ^

0 N0 ?- ?6 _, G  \: x' H  r& o  m, X9 H; }. ~2 ~% m
;;if [trade-record-one-len] of myself > 3
% b3 Z& F2 E8 c8 v
update-neighbor-total  F/ U' q/ G$ _* T  i
;;
更新邻居节点的数目,在此进行
5 [. _; n& l2 u* H: ]0 `let i 3
+ ]4 B# @; X( F9 N- tlet sum-time 0
( f2 |+ w( d4 @6 {. Fwhile[i < [trade-record-one-len] of myself]
$ X- ^* s) u8 f- d1 i[
1 X. M9 {1 L) m- ^9 }) r" Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ ]+ y* C; i. G" [0 l8 Q( R8 Aset i
+ b' R4 l2 {' M. o* S( i + 1)

# e6 {- \" [, O# B! |& w]8 f7 r' b- ^4 g
let j 38 q. R$ v% i9 ^' n/ V! O
let sum-money 03 |2 r% E' _  b% W+ h+ v2 a
while[j < [trade-record-one-len] of myself]4 x( S7 C9 k8 W' H! w
[
2 j- v9 m! M  r9 Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
1 y0 [" G4 |! r! Z3 K7 s6 f( Jset j
; k- k6 x. {# F$ D0 q- X( j + 1)

9 d+ j* b3 f! L- U  z" G8 Z]# a" P- X# W' {0 J1 R3 D
let k 3
5 ~9 t5 q" Q0 ]let power 0% j+ W( _  I; i- [
let local 03 u+ A, o! _0 e  h) U+ _
while [k <[trade-record-one-len] of myself]7 I4 r+ S( o4 S
[
" k2 G1 v/ \/ [7 o+ Jset 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) 8 A  ]( D. [# }& F9 ]& E
set k (k + 1)* b- M  L, ~# a, a0 g7 S. K
], f5 i8 ]+ n6 p7 C$ S7 S
set [local-reputation] of myself (local)
6 I4 I/ v) b) \0 \+ ^5 n: nend
, c* T: H; S6 `/ ]7 M* m4 q1 P" s7 K3 p. S$ \8 o) y  t5 p
to update-neighbor-total: G0 u% b3 o4 h1 R+ j9 _

2 q2 Z. r/ S" v5 u8 s9 ?' Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( r+ F: f1 c* R1 I1 P' A
& c: ]/ V. _: b. z
3 h0 G) b3 o0 F" i, u2 x
end' _$ ~. L! `, d
. b0 w, V( L+ o, M: v
to update-credibility-ijl ! G8 e1 Z) Q0 g1 H* `; [9 u
. o. o5 j6 O) h$ H- a/ V1 w
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
! N5 u# f) ?! `7 mlet l 0' }7 `2 C: E& U( B, r
while[ l < people ]$ {! ^6 Q4 P7 k. _
;;
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1 Y3 p! O: t0 u0 m* T* q
[
; ~' h' O8 k* {5 U8 v+ v7 `6 tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" K8 r# |, m6 p+ a
if (trade-record-one-j-l-len > 3)+ S; j3 x# `1 |/ P: I
[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
% `& G- l+ _4 v- w" N. f/ r& Qlet i 3* t( ^3 M: H/ `- f+ i
let sum-time 0+ q  W, h0 a* X: m# h0 L
while[i < trade-record-one-len]7 J" f) [- D$ @2 {+ y" V
[3 `/ i$ h$ P# R: f1 T+ _  X0 [
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# {7 _+ X( l! Nset i/ w* [: B" Z8 `6 Y6 `
( i + 1)

# D* m2 ]& D9 z! u- a% @. J) M]) I7 J! o  W! K& b
let credibility-i-j-l 0, h0 A2 C! J; O5 [2 \5 y$ O5 v
;;i
评价(jjl的评价)7 ]3 U* o8 m" a8 n0 H' m
let j 3" _- f- X  v0 D6 ^3 C; S7 X5 @
let k 4
: |* Q6 j) g6 m% ^while[j < trade-record-one-len]( v, |5 T) }' I4 W9 \4 j% k
[
! R% A$ Z9 l2 P/ [( y+ Twhile [((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  O$ v3 @; w% q8 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)  J6 `- d" `1 N+ F! u, G# K
set j
9 Q+ ?! r, H8 a: @( V( j + 1)
$ O7 j: b* K9 j2 f/ }/ r8 m9 H
]; R9 D- I/ R2 i( N
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 ))
6 Q- L4 h# Y3 t1 l+ P) K" O% A1 x0 x. @7 k! c1 Y
0 b' L2 z6 L- N6 _" J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ p0 f2 J  D( J
;;
及时更新il的评价质量的评价
% K4 F6 V! E$ u; |$ E& Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 r9 ^; f! O: j2 ]8 Uset l (l + 1)4 t; \% ^  v3 B( b9 C4 c. |1 d
]+ f6 X% I: B3 t
end
. E! ^7 Z$ z8 ^6 H
' P& x0 Y! z9 c4 Z0 Ato update-credibility-list' r- d/ M/ U8 w+ M* P: j8 R+ S
let i 03 e5 X, W1 X5 O4 Z7 N( o
while[i < people]- G9 Y/ h6 z" _3 l1 {' r
[- w5 C/ V" R6 H0 y. ^1 G' e7 ^* y
let j 0& ]5 R7 ^; u) N1 |* Z, m
let note 0
  r) M% b( `8 M0 r& slet k 0
7 g1 E' `' c* G' m/ o6 S;;
计作出过评价的邻居节点的数目" N. |: L$ L7 s" o
while[j < people]
7 D6 f1 [' K) U6 g[
8 D; i) V7 h: L6 z4 S1 Pif (item j( [credibility] of turtle (i + 1)) != -1)8 B$ \# x; ?, B8 H5 i
;;
判断是否给本turtle的评价质量做出过评价的节点
* |! |- ~/ O+ {[set note (note + item j ([credibility]of turtle (i + 1)))
3 n0 z/ ?! l0 F" ?. z;;*(exp (-(people - 2)))/(people - 2))]
' w: [7 s* j' p: ~. @
set k (k + 1)
. Q- Y, U% d0 j3 b# Z* B  |: H9 c! o' e; G]; K  u+ o) ^" I3 ~( V* q& @
set j (j + 1)  l( Q( q7 q  |6 R: z  |
]$ B4 M, ]8 C* O( u- c  {  c
set note (note *(exp (- (1 / k)))/ k)# p; t8 ?4 Z3 K0 o" q
set credibility-list (replace-item i credibility-list note)3 p5 e" f; Q) ^6 ^$ @5 r* s6 g
set i (i + 1); Y5 Z3 f- q# `
]
- r; M' I) a& K" O0 t3 a( a1 |end
$ b1 Q* {" F  l0 x
& c7 r0 w1 l9 Nto update-global-reputation-list
# x3 N; B6 M$ `" }3 s* o& z7 `9 Elet j 0( ~* O7 P/ E( z# i! d
while[j < people]
  `: p* U: [8 X  w& Z( Y! S[4 ~" h! A0 _2 d5 j0 l; ~
let new 0
. z7 t  n" q9 o2 ~$ {6 b;;
暂存新的一个全局声誉  A. n# K# a, N) B9 S/ N1 O# ]
let i 0
( t/ F1 H8 Z/ n2 m% X  }let sum-money 0
' Z: Y; X& r. B1 f; flet credibility-money 04 M0 l. b8 V4 v: j! J+ Y
while [i < people]9 s5 w6 n; o* x9 z
[. S" J  w8 q0 B$ N  t+ t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 q% m  k# k! e) H5 qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* A+ R; }, @, ?+ Lset i (i + 1)0 P0 @1 S% J0 o& [# U9 M% `
]
! H5 D  T6 S( W( Ilet k 07 Y: |5 P/ x5 Z& c+ U) f
let new1 06 y! T# P. f, }  K
while [k < people]; M4 x8 |( ^( n: y8 b. d6 D. u) `+ I% }
[8 K8 G) o! L2 R/ c6 m5 R, V6 \  _
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)5 h, _; B9 E( B) @
set k (k + 1)
2 c/ m, z6 u5 `. n], a3 a  a. H- D0 B; Y" x, z- {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ ^( S( {; N) a$ k
set global-reputation-list (replace-item j global-reputation-list new)) O, [. L9 ]1 K) c, J  \
set j (j + 1)
, e) d* ~/ t7 ?# E8 P* []8 z. B8 D& O9 l# u/ G( l
end$ T% A% ?/ y0 d, p

; l# K2 L, N. {4 U& X, A6 m. ]& R/ H/ P, a, L. K* n- k

% o- r1 M2 V0 Q4 Z% Q3 z/ r+ Sto get-color$ R, L* w& C1 ?3 k

! S  m# i# y2 z; z4 {% r; n' X8 Pset color blue

% T: u. Y5 }3 ]6 m7 Vend( o+ r# Z& y* a

' h) O* G! x3 r3 {9 Fto poll-class
/ ?. B" _2 ]; l% s5 Gend8 d3 E/ A4 ]) H! f& W! G
5 l5 F9 }$ S; {* {3 V  F# }
to setup-plot1- [0 q  R  Z# ?$ w4 W' V

8 n) w2 U8 R2 ?2 y1 D) Rset-current-plot "Trends-of-Local-reputation"
& D9 a* j& U( ?: a8 R+ O3 b8 Q9 C
% i% x& u4 d% }/ D7 m! h
set-plot-x-range 0 xmax

5 z) T; L3 |1 `/ b
0 z* @6 p  B. ^1 f: j5 K. Rset-plot-y-range 0.0 ymax

1 m7 q$ A; J, w( x1 P7 Aend
) r) ~( ]; P2 `/ ~& s8 M- A6 N& V' M
to setup-plot2. E; z5 C9 T1 e2 k0 p- L. W1 f
& t: K* E; E# c2 V
set-current-plot "Trends-of-global-reputation"

! L$ Z( {' z# B+ Y6 \1 y, ?, q* Z- N! S& }7 m( }) M
set-plot-x-range 0 xmax

8 E9 P. `* c* k, {2 _0 ]
; k8 ^. w: T1 F' ^6 N0 nset-plot-y-range 0.0 ymax
3 t" W6 _' ^9 S$ S- C1 b1 U. a3 G
end
) K; \& L8 [* s) F+ d6 j+ R! I
, u6 V1 F# G4 d& `6 t+ ^to setup-plot3+ w( H# w  Y5 T- [. |9 @4 U% k. G

2 [. ]7 M. @; @( a! T9 lset-current-plot "Trends-of-credibility"
9 e7 M% }: \8 ]4 w3 f. v% n0 G7 v0 `& a
( c9 n+ x+ c( z9 [, [) ?# C- ~
set-plot-x-range 0 xmax
6 J2 o9 o- i, ?' w+ K2 i4 x

6 w5 W0 w" V" a+ C, Hset-plot-y-range 0.0 ymax
* h. U% ?* r( y8 U
end
: U# ~& A! i' `" L* y. o" C/ b* T4 h
to do-plots; U$ z! r0 S- V! g+ h
set-current-plot "Trends-of-Local-reputation"
1 {/ e1 o& h" _- R& D9 Iset-current-plot-pen "Honest service"
! y) ?) t3 \5 M6 v" ~+ h/ nend
$ P- ]: J; V2 i1 ?& m6 S" k! l
/ ^; E' z' K5 X' y[ 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.
* r- U9 A8 |7 j# b) p; ^% |) l2 _  c. E. s& M1 i7 |
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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