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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:; I' p7 h* c" R0 m5 Z+ g
to do-business
9 x1 r9 b* q" O& X3 D  U9 I rt random 360
/ X, E  `! i3 J fd 1" n5 k/ B& R6 ~( u
ifelse(other turtles-here != nobody)[" k0 \/ e, A! ?1 s
   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.
. ]% z: K1 p- }9 P# r   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 v( ~- C$ J! t- d8 w( K1 [& X; _' y( M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( h" A; A* V9 V   set [trade-record-one-len] of self length [trade-record-one] of self
' Z; G; v5 _& g$ g# b/ L( Y, G  }   set trade-record-current( list (timer) (random money-upper-limit))  W' I, |: K( T/ _% T5 ~

, t3 \& v" q" H8 k3 r+ S* ]问题的提示如下:1 \5 j1 X' ?5 w/ M- ?4 I

  M: {5 L) Q+ R( h' g$ B, W; P* f6 xerror while turtle 50 running OF in procedure DO-BUSINESS4 s! K! B$ A5 T$ c0 {) p2 |
  called by procedure GO
, u3 Y+ c& Y; i3 J3 c+ WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 R' f5 r8 J( c. A6 ^$ L% f
(halted running of go); E% y: b5 y* [6 C- A7 d
/ Y6 K2 Y" x) `' P  i
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~~  t9 x' d" |- i5 ~, G
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
  L# ~8 V/ x4 Q' |: O! Nglobals[
6 T: F0 a, |' [9 Sxmax
7 w  M; n! _0 gymax
8 G. \' i7 M0 b# C4 Z, yglobal-reputation-list/ U6 K! [; u5 I8 g4 }$ T6 ?7 Z. n

9 [$ w0 A: _: @/ a;;
每一个turtle的全局声誉都存在此LIST6 Q; K) _8 L$ X
credibility-list
( z9 y& y1 `3 L, Z0 W$ L& y;;
每一个turtle的评价可信度" C6 U1 Z/ ]7 n; [+ }; a! _# v
honest-service
* B  L; ~- I) }- \- yunhonest-service! F) I# Y! O) h$ R6 B' q
oscillation
$ a. K7 X# ~! G$ t$ xrand-dynamic
+ k: x& g7 T7 I( W  e5 `- K]! j! @; k; Y/ J

5 M4 v) _. A; n$ j# Oturtles-own[) i; n) U8 _6 p) C# e
trade-record-all* o7 _! N( r  `" Z9 v  V, H4 S
;;a list of lists,
trade-record-one组成7 o2 w& l; c# J/ _# M8 r6 n
trade-record-one
$ j7 I' s. i) N;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# z% d/ I5 @  B( V  a# n8 d, W" J5 l$ @$ ]0 ]  e& w3 W
;;[
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]]" h0 E9 \4 S: ~* n$ T# k
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]! R: @% `/ `# f- d! P
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list1 J4 h6 h8 H/ h- U
neighbor-total
' r) l& {3 s% w1 ^: g! \8 q;;
记录该turtle的邻居节点的数目: o; Y) S! [+ B; k. P5 n
trade-time" i$ n# ?: f* i
;;
当前发生交易的turtle的交易时间& _' S+ j  a6 R; w9 ~9 p# P# `0 e
appraise-give  F! ]  x, [! p) H7 V1 N
;;
当前发生交易时给出的评价
9 U# t/ z) ?$ _% i/ @; Uappraise-receive6 x7 P4 L7 W& F1 H* P/ ]+ n
;;
当前发生交易时收到的评价7 D; f" V2 O3 d; _4 e
appraise-time
" G! c6 U* [4 d: }# m;;
当前发生交易时的评价时间' Y6 L6 T! u7 O
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 ^0 [, G: z6 a" t8 F* _0 j
trade-times-total; p7 ~( _& O; N% I7 f4 s2 T
;;
与当前turtle的交易总次数
) j3 J: k4 o1 Z, _, w  p+ ltrade-money-total
% t* k1 [& p$ B: W& j3 [" w;;
与当前turtle的交易总金额) x( K, L4 }" d$ G: U' y
local-reputation9 U; W3 A0 Q% f* B3 F2 {3 \' \/ K
global-reputation
: g' ]) J$ k" F( s/ T" Tcredibility; t% w0 G# ^/ S
;;
评价可信度,每次交易后都需要更新
- s, ^4 E, N4 z; ycredibility-all' v& c/ V( o4 U  f. M
;;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9 y( W& ~0 \" s6 t( Q7 E

. [; W; }( y, F1 a! N+ e;;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
2 z' G8 {2 C) l/ K; Bcredibility-one
( @4 H) V+ P  k( `. z;;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& i' H: I" q6 f+ i6 W3 ]
global-proportion
% d$ @9 s6 G7 j6 d1 \$ L: s, gcustomer0 B, O0 ?5 F% @3 ~, M/ C' @5 ^
customer-no1 |# f# |* `! _8 Y) g
trust-ok
6 k3 E  j: o- _/ T- K6 a$ {trade-record-one-len;;trade-record-one的长度
7 u+ T6 u' y. Q/ ?1 U: B5 a) w; e]
% d+ J+ t+ z) ?5 A) S' P  K5 v' n$ H* ?8 T" X
;;setup procedure5 H3 W6 t' y& f+ V/ B* [

2 ~7 {! b, ]! u% u; ?to setup
; a) s" `2 Q1 x+ k9 t% }# g7 y- c$ i: s; n  v
ca

$ j' Y) A% `( Q! L1 @  x6 Y1 b# c- \" f( q2 B
initialize-settings
% g. ]2 K' T4 f  Q4 _: \
4 _8 o3 [( w- G8 A! `; f; e
crt people [setup-turtles]

" K' k+ B- s* v) i+ S: l) C6 v
& b" c8 w; A" \0 wreset-timer

$ }" Q; {/ p1 B, a9 W3 D1 C( l* D9 _* p
poll-class

/ A  g/ J9 g6 k# }4 `2 i" D) _* C  p: k9 s- Q4 X+ D
setup-plots

" w7 S' O: r# n" d  {1 O# Q* K  j( c# X9 b0 H6 `
do-plots
) ^: i6 B+ k1 s& q2 ]& x" n
end! K. n7 B$ w0 ~
% G9 i) E7 u/ Z
to initialize-settings8 j/ h" l3 q7 u( W/ p

: @/ b. @! Q4 w: h1 ?set global-reputation-list []
" P( @5 y/ q: n; V2 t3 L: ^
5 ?+ s) |& S! P4 F5 B" R2 B% O
set credibility-list n-values people [0.5]
5 W9 B) T  l) C/ W; l
+ [  D" c' z& h0 ~* E- t# A
set honest-service 0
7 u) M6 d8 q) T

9 C% m! E, A+ gset unhonest-service 0
+ Z" D( \9 t1 p
) D1 s1 h/ W0 W8 x% M9 i( e% l
set oscillation 0
3 _7 F* A, ?( {4 V4 ]  V
, D5 R5 h0 h) h, T7 D5 {
set rand-dynamic 0
3 N7 P! N7 d9 n7 E8 `3 a
end
3 N8 G  G# _- q. N2 d1 e% y0 s' p) t: x
to setup-turtles & u3 j( O0 @8 q7 `
set shape "person"
, N$ n% L% L) Z; Z* gsetxy random-xcor random-ycor* b0 T4 ~; v# f( V3 Z5 T
set trade-record-one []
1 Y9 k$ m  ]& w: H: z; ]4 j
. Q, f  O- h& C  u2 N& U5 Q" }9 y7 y
set trade-record-all n-values people [(list (? + 1) 0 0)]   N1 \! Y- o, b% S
$ b/ z6 v& ^3 j  t$ G6 {
set trade-record-current []
6 `0 K$ G5 l7 Cset credibility-receive []
+ T$ W* c( C* c) ^set local-reputation 0.5
6 s3 ^" n: C. Fset neighbor-total 07 P  x' _5 @2 f$ V& M
set trade-times-total 0
8 r: o' |" G5 z2 wset trade-money-total 01 q& A, @8 W3 K
set customer nobody
$ }* r6 J6 S! ?' S& i$ Qset credibility-all n-values people [creat-credibility]- h6 R$ }: x, g/ j' f  l+ k
set credibility n-values people [-1]
8 O1 l  e  u7 ^0 e8 b5 e+ xget-color, ^+ K7 G, B; Y9 G

1 @: _5 z4 ?# `% F" o" xend' l% ~5 y, v3 ^, s  F0 \+ Y
# b6 A; f$ ?4 ^2 Y3 _0 U
to-report creat-credibility
$ ^, w9 E8 L& I# Sreport n-values people [0.5]: B5 `3 H9 H( }* I, N4 ~+ {
end
4 Q3 C8 s9 G2 j: U' e% n& c* E0 R* F% J/ e; |$ D* d. M) _& A
to setup-plots& J6 V  b: i; P0 u0 M( l/ Y0 r9 W* X

# }" E. x. @" U* x: P  Y, Mset xmax 30
: z- h1 f2 ^5 n0 S& e
1 @/ v) Q# b  g3 Y# ~9 {/ |
set ymax 1.0
- q' x& ~; ]) o8 V7 W

! d' w: f& Z  z' U( gclear-all-plots

' S" X2 y% z6 a3 r* Y# l2 |8 ^; T& k9 l' p+ }9 o- y) N
setup-plot1
9 t& k4 C! E6 G

3 J  X3 W1 @. E; r* `setup-plot2
$ V! \2 B' D9 ^; B9 [- @) m

8 m* I0 U5 n" N. h* D% @0 |setup-plot3
3 a) g/ s, E* n2 _
end- s# I3 f, _# z* l1 z

! p1 o8 K! r% _+ g+ \;;run time procedures
. k' P5 \$ y& e
( z8 w9 W' B! P" d- @! ^to go. T( ~! m+ y% d. ?$ a# q' W4 w3 Y
: V8 g$ X9 H5 J) d, T
ask turtles [do-business]

$ }* w) \! V( J3 a! c% Fend
) j# j7 y- H7 u3 F' x, n
5 f( j" P0 k/ r7 A% q1 Y: F# f& uto do-business 8 _" E& m+ V$ p- n: C

  o- s8 U% P6 p5 L! b4 ?, Q; k
% q- c; h" x8 Q' I/ [( {/ @( Y+ ?0 C, ]rt random 360

9 j. m# O2 X' h, C1 e* ~: c* R  a+ z% A
fd 1
( b8 h" L4 ]* u" R/ t% n
* A" ~8 Q7 E1 r3 ]. d" r: Z
ifelse(other turtles-here != nobody)[
& m6 m: b  w5 F7 R
. h2 ?  q# w* e% ^
set customer one-of other turtles-here

$ T: ~4 [' R0 o0 t$ q: j
! e$ Z& Z; g5 i# g8 k; N;; set [customer] of customer myself

  B4 O) ?3 J" v( y& t& ?; ?% f1 a% \. W, y
set [trade-record-one] of self item (([who] of customer) - 1)8 o* R1 _! L: y% N! @0 X' }
[trade-record-all]of self' E$ ?% Q; V" E, @4 i& m& e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: a" ^( f% V, M
: T: @+ d6 z7 @5 V6 bset [trade-record-one] of customer item (([who] of self) - 1)  J) N! c. ?: [' ^5 \
[trade-record-all]of customer
6 _4 S" Z( c$ ?  M: r6 I! W

$ p) x: S+ M6 A7 K" u- k0 Oset [trade-record-one-len] of self length [trade-record-one] of self

3 N7 E, b( `2 l! ?6 N- w: M8 U( @! Q; `
set trade-record-current( list (timer) (random money-upper-limit))
$ L5 R+ a6 B2 g
1 {1 U6 U& }* ^& X2 k
ask self [do-trust]  B+ M7 F3 ]; E6 {/ H: d
;;
先求ij的信任度" Y3 F* |3 |4 ^+ Y) A; n- ^

! u) H- X2 ~- p3 e4 Z! |if ([trust-ok] of self)# w/ k; S% _% n1 T4 `  |
;;
根据ij的信任度来决定是否与j进行交易[* K. o3 R2 r$ ]2 d
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 d" w3 p, ^  E& r0 ~4 I1 l
" V, ?8 ?: t* ~) q% X
[
  |# _" W, j' I; R; B. e

% w& ~( L3 o& j3 C' L8 Ydo-trade
- ?0 H0 x2 A% v2 K& w( I# ^

$ |4 V. s. T9 |: V) F% Lupdate-credibility-ijl
: Y& I; p( _4 h$ e4 G4 U

+ F1 F5 L5 h. a$ f  f, i9 hupdate-credibility-list
- x. K7 E* w" {  Q' c1 ]
9 A9 @" D4 ~. [; ~6 r

2 N) H9 v& T" I% p* E$ \# @) \update-global-reputation-list
* n) q; {' v% ]" ]' o2 ~" _
( `) n8 @1 q0 g6 [4 U& o
poll-class
  C9 y! [8 E9 @' K

6 n* K! M$ L! sget-color
7 f1 q" c5 F  y8 e7 Y7 X
+ ?  Q' G% J' j: s1 a
]]
' ^  R1 x2 Z: W, {" p. E! z- u2 U. y0 p' b# Q8 J0 l
;;
如果所得的信任度满足条件,则进行交易5 t) _0 m! s" T8 W# B

7 B* [8 i( C! P) [5 h  [[

4 m, ]7 |5 D+ o2 v
2 g4 Y$ S0 z  O' V2 ]$ @4 K9 prt random 360

7 `. _3 W. x+ U1 ~% t  C, q$ u) s
% P  ?7 y# T% R! R$ @, }( g" q1 Z. xfd 1

( u1 U" @3 B: w+ @& f2 X$ C/ V3 }7 Y5 A9 S/ N: H% `$ q/ n
]

' y0 r/ D  O/ N6 f- ]
. O' o4 p# |% q& Zend

8 a6 X9 K( C: z# L; ?7 I; N1 W  v( g* o( G
to do-trust
( ~! n1 z3 m) q- l. ~+ \4 q( ^set trust-ok False/ s1 s6 G7 C: [7 \1 |

  I* E0 e0 M2 {. G8 Q& G

1 \  A1 p: R+ B8 ylet max-trade-times 0( [+ A- ?4 h  s% r5 ^% t2 q1 ?
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 e/ D% j9 i. \0 J# s% E, O/ Q" Rlet max-trade-money 0% `! v; c: y6 O1 {8 u. W) F# _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% G5 C1 e5 N0 y4 s: [! olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): R8 {* H$ Y" x; C: `- f! b* V$ [

' D9 _5 w) G$ G' o2 v

& n2 X2 C( [" U- yget-global-proportion' e2 r, r( x/ l8 d4 G
let trust-value) J+ }+ A. I9 H3 a& }% c) \. o' {  ]
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)
; i( f- l3 U3 l2 w; s
if(trust-value > trade-trust-value)4 E! M6 u: N* X  D. d! ^
[set trust-ok true]6 _# w9 u- h* N! R
end. r% g" U1 p& r1 ?% T! ?
  R, e( G+ a% R: L
to get-global-proportion3 L( |* \4 N4 V+ p4 |9 D- v+ E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" [: D3 D8 F3 D4 n  c
[set global-proportion 0]) A7 T# \- k( ^: ?! q! m
[let i 0
6 F; U% o9 ?+ i: Wlet sum-money 0
' i, I! ^% T( d$ c' P5 X/ U; p) o9 @while[ i < people]
5 S/ O. t+ w- M, z& t1 _) {1 Z3 }! R[
8 O+ V4 m) N- o) Iif( length (item i; |9 Q3 ?+ r! Y7 U
[trade-record-all] of customer) > 3 )
' \  Z* f( @& ^8 q; I6 ^
[
# k1 E/ }) k2 ^: ^+ Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% M# T9 p$ Y) v1 K/ o+ ^$ E' E
]% U0 F0 n! k# q9 ]# w% ?1 X
]4 p6 [5 K) L( t7 y# x& S/ R! a# b
let j 0# r' ?4 n0 Z& J' }. U) A. b( `' }: c
let note 08 J( h8 L7 \* |* J
while[ j < people]; w4 F  `: M) h" a9 g' O, Z. g
[. L6 q$ b- U" R
if( length (item i
! \- ]& v1 Q. y' B[trade-record-all] of customer) > 3 )

- m9 E6 m. ?" p3 h' g[5 g$ ]3 ^: c) q3 i& U0 Z# r+ @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ {2 O( y0 d/ }5 [& Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- j" ]% M+ y1 p[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 j+ D! ?. G. t$ O: c* O6 [- M]
( W3 G2 ]: v6 d/ \3 E]/ N3 |- z, z3 s& `  q
set global-proportion note+ V1 ?8 P0 ^5 J0 `
]
9 ^' P! D/ n5 U* Jend
- x; D( c- I6 T' U, A. y* F+ e) U& v. _: b
to do-trade4 {3 N- B/ L! z* P
;;
这个过程实际上是给双方作出评价的过程
0 L2 [' K& K! X: z/ ^: T$ Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ w1 Q4 K2 _0 }( ]# E. M9 j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 M. d5 b& a7 Y2 s" X$ Y& E. j
set trade-record-current lput(timer) trade-record-current
$ w( X6 e( Q! O/ |* o;;
评价时间
5 H: F: k0 w  Fask myself [
& l. o$ d. p+ J* P2 D) P2 Oupdate-local-reputation
$ r4 X8 H- a3 C5 O5 E1 O- i* e9 [set trade-record-current lput([local-reputation] of myself) trade-record-current  X6 ?1 O! V) h5 E% H! m; X% W4 k
]
* z) y- Y/ \  S5 j( Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 I% \7 X( y. t& l2 Q
;;
将此次交易的记录加入到trade-record-one
# }' Y% h* J6 H1 S  rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 Z& J% }9 t0 O2 X9 L4 H( Zlet note (item 2 trade-record-current ), N- p; l9 ]* K4 y3 `' P7 `0 B$ D9 x
set trade-record-current1 r" e: Y$ \$ n) g% r- F1 S
(replace-item 2 trade-record-current (item 3 trade-record-current))
% v# [: A8 D, F! l& p# r. P
set trade-record-current
2 m$ |1 w; @0 C1 M  X(replace-item 3 trade-record-current note)- W0 E9 `7 R: Z- u# h

2 H0 E" A0 o; v0 P" K9 ?% B0 l

1 ^$ p( u5 b- F5 c, I  B; M1 gask customer [5 N9 g! L/ t2 u! k) {% A$ n0 ?
update-local-reputation2 V8 N. `/ Q. C# E8 \% d
set trade-record-current
" A2 Z# s  I# m4 I$ _) q* V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 e9 L: N3 I+ Y9 z* @' x]* E6 J# G$ o5 M& J9 I6 _" P

* R: y* `7 R! h  _8 v

6 `( O% N' y+ ?* zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 Z' Y% r2 z6 A" n$ ]

( g9 ]; X! u: Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. X: D4 H+ ~% I;;
将此次交易的记录加入到customertrade-record-all
$ I) Y2 M1 v! g3 dend
3 j; `2 S, c2 v
5 b/ f* r' G/ c* R( n# |% uto update-local-reputation
' x& |3 p" q. d% m3 tset [trade-record-one-len] of myself length [trade-record-one] of myself
  e+ ~: a  _. `9 c! S; o$ ^/ J' L
( v+ \# A7 a9 Z4 `: z  r
4 S2 [% T# \' W; O8 E) ?- z3 S! n;;if [trade-record-one-len] of myself > 3

8 q# C- E* X2 F' ?. j7 Qupdate-neighbor-total& Y/ d/ [  c. b3 a
;;
更新邻居节点的数目,在此进行6 L: D# T' p) B1 W: i; W
let i 3
2 s. s8 A, E, `- d1 p2 w! d' F; olet sum-time 0# E- d) `4 t) z
while[i < [trade-record-one-len] of myself]% L2 ?7 ?* z$ g, g( B2 b
[: z: H' V2 l. n! \% ]: j# z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( F. F4 m% n; N" j% V3 \set i2 B. V$ C! M0 [: {) |& P3 ~3 H
( i + 1)
% N3 L' B/ u/ q$ M) R, k/ T
]( I( D4 D2 W4 @% K: e3 i
let j 3
+ B& R4 b7 W' }- e  A2 L+ L6 zlet sum-money 0
% K2 G# n6 _. R. G4 T$ Z" n( ]while[j < [trade-record-one-len] of myself]
" U, C- L$ i/ x. `[& O$ D+ n- g; f9 `( K  Q. H9 S
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)8 \) t( M* O6 i6 q: {% }# }
set j
) y4 Z+ t6 V* G$ Y( j + 1)

3 A) l. W) ]0 R( j7 T  C. _]! x5 N! @" Y( O4 W4 ]* o
let k 3; a; k! q/ I9 T' j6 D$ W6 }
let power 07 e- ]/ D' H3 N: d0 ?3 G( h
let local 0
8 Q1 H8 C, K/ T* Z( K! b% zwhile [k <[trade-record-one-len] of myself]# \8 \5 u0 O- a: Y8 l) j5 [
[' ?0 L6 V' r* Z- V6 b4 x5 a
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)
: K  N- `8 {; ^7 \" S; x1 Xset k (k + 1)
- C% f- e- p6 ~. N]' y9 x" C+ I! w& e
set [local-reputation] of myself (local)
3 K; L+ d+ u2 r- fend- V* u: Y3 a: q

' _2 c% U3 f0 X/ f' K8 [) `. ]+ kto update-neighbor-total2 e0 S# K7 _' ~' e! |7 J

" r; }* r) \5 C' O8 w  Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 u4 L! e. o5 E* q2 R; k) C5 P9 b" z

' G/ q; h8 G1 |2 s6 d( ^5 ^( J

" {* ~/ t7 N) Fend
; q6 U( F! P. R
, h% c2 P% y/ Sto update-credibility-ijl 1 D1 r5 o" L& |

/ ~% u" K$ z# b' t;;
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。
% f* b1 ?. v1 [8 Z) G/ Slet l 0
% H8 D4 f8 T) n+ l9 ^while[ l < people ]8 _! j" @& T  X
;;
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
: {2 D( C' [; e) k7 d* W% _/ p8 i[
! o5 m! x0 V! N; \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# T0 Z2 E. B2 Q& r. s5 J( G% d3 z; B
if (trade-record-one-j-l-len > 3)% P- B' J- U7 R, Z
[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
3 Q1 m" g  A2 Z/ O  m7 p7 v5 m2 Ulet i 3
8 ~8 Q, G0 t8 Z3 L- rlet sum-time 0+ R( x. ?4 E; n) w9 ]5 ~- h8 N
while[i < trade-record-one-len]
7 a+ |6 f# c2 K" E, \4 l[1 r( c1 s. L8 x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): I0 u8 o+ M0 i7 ^6 j8 o
set i5 i  l0 m; ]7 |: d3 b
( i + 1)
' Y! D2 q$ R  G9 X# N$ h* P2 J, Q
]
, Y, L6 u% w; Z: l0 Q# ~let credibility-i-j-l 0
$ }4 S; L% j9 U# N' Q5 h;;i
评价(jjl的评价)
2 ?5 ?  C! O% b7 e" ^- G5 u( d( Flet j 3
* R1 s$ Q/ J4 _5 olet k 4% ~" p7 a$ F% [6 J' K4 {
while[j < trade-record-one-len]
9 E$ D2 E! p/ Z2 Z8 @, U[
$ t8 U; @% H' M- Q- C" P0 `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+ `: h1 k, U  h- a9 o$ h
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)3 w' X  N% o) b' J8 N0 Y+ q
set j1 j  T( {' ~5 M% B: S0 T
( j + 1)
9 q8 d3 q9 R/ ~/ `1 p
]5 G' a# A- p4 o) X: X  S' X
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 a" m$ g. F+ U7 S8 y5 a& E* V" }" }. d: F" ?3 i2 b
2 h# \1 _! E5 M7 s7 [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% P0 _3 _9 ?+ U1 O4 N$ }3 {8 E7 i;;
及时更新il的评价质量的评价/ s% @, {, B. d7 i
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  ], X/ q3 M8 H4 Hset l (l + 1)6 m& k' ?1 _3 \4 K6 K) M( {
]
1 x' g- O( r0 v, o& j' jend
5 G& t5 i; \  D6 _
) v0 }# Z8 y4 \$ Cto update-credibility-list
3 D# {  T+ i+ `let i 0: `8 ?! _: R+ f2 P
while[i < people]% m5 |$ w# i. |- ?% q
[
/ q% c- n, f! \# }! u  Ilet j 0
6 x4 z2 C2 V1 e9 |0 w& [- U1 hlet note 0
' r% a- }0 M$ F: alet k 02 x0 ?+ Y# ^# M9 F- f2 ^6 l
;;
计作出过评价的邻居节点的数目8 X0 X& G" u! ?: f: B# u1 o
while[j < people]
7 N9 E! t: q' |+ b# C[
5 V$ F: e* Q: G' x# B9 Rif (item j( [credibility] of turtle (i + 1)) != -1)" l; K9 b$ `, [( R  ?: |
;;
判断是否给本turtle的评价质量做出过评价的节点5 {$ H  s6 V* |" J$ v
[set note (note + item j ([credibility]of turtle (i + 1)))
& q2 J7 |+ n; P;;*(exp (-(people - 2)))/(people - 2))]
8 W3 V4 q  g( a) P
set k (k + 1)
2 Q4 v& l' `( }0 Z/ N0 s9 k# ]- K]
, Q% \3 g+ B1 o/ Hset j (j + 1)
% X: M5 o3 r, T$ H]! M2 O" J8 v0 e6 z2 F# ~$ `# [) g
set note (note *(exp (- (1 / k)))/ k)
4 n0 h; q/ s) A6 S( xset credibility-list (replace-item i credibility-list note)
3 k6 _4 X* o# v; X# V4 q+ Fset i (i + 1)0 c9 G. F8 @% r3 v3 h  x7 [) [
]2 X: I5 C4 F$ I, S& z" M  F
end
1 [% u- B% W/ V1 U
9 B! u4 `+ v* q% }4 Pto update-global-reputation-list2 c* S. V) r2 _0 S4 \) v- @1 A, E
let j 0$ \9 ~* D* v5 G/ n, j
while[j < people]9 O  Q: D" X% h/ ~/ @5 w
[
$ r; C  h" ^$ m- }+ Y2 blet new 0
8 A5 ?! v! z; V9 \. @5 U( |0 _;;
暂存新的一个全局声誉/ t  H7 O# w- G: _2 Y8 \8 w
let i 07 b/ X2 e8 y3 A9 B2 y7 f1 k
let sum-money 0! }1 r' y& r3 t9 g( _
let credibility-money 0! n9 z8 s3 a, M0 I* u: `0 w
while [i < people]
/ P. H7 K/ n6 u3 G3 P[8 i" t7 n: Q% K) l5 b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 u7 V% D3 A& ^8 Q- x$ A9 B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 F/ {( ]  ]5 l# x7 E4 Dset i (i + 1)( m9 o" h" ~4 T) l, ]+ E
]
% Y3 ?5 ~; l1 w/ x" v" Nlet k 0$ }, i" h& l8 _( L/ o$ D2 r& g
let new1 0
4 ]! E0 x0 C6 C- g* l% P- @while [k < people]- r$ M$ |* }+ I1 H/ n6 O5 u) c9 p) F
[. [0 l5 R! p2 U) {
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)% j! Q0 f' j+ q
set k (k + 1)& J9 ~6 R- R1 C! ^* g9 R- o; l6 w' [
]
& ~+ _; _1 {% i' V& p1 uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 v: P5 S: t" Dset global-reputation-list (replace-item j global-reputation-list new)- u+ `. B! j9 W) R  i4 k
set j (j + 1)* C8 {5 C4 R  V5 o4 U3 ]* W. p
], K6 L/ {% B/ n. [' _
end
# @9 M  H7 h6 D! f3 x
; C/ U  \- k, b. H3 \7 j4 [+ u5 X( u9 c- |$ r; a) J5 Y9 ?9 H

, N% ]: p, N0 A0 m% U( uto get-color3 O' T  t" k( p7 ]
& x  E0 {0 N- j8 R8 T4 H8 e
set color blue
% w6 Y) E" g# a6 f
end& W' g* c8 q+ q* y# Z! z; ^
: ~& f" p+ D" C
to poll-class3 b! j9 x8 ~- O' @9 H* t
end5 v. A  ~4 `; J: a' U1 n  l
7 R  ~% c3 N; g8 S# ]$ p2 O
to setup-plot1
0 N# P3 j  q- ^& w1 O1 q* `# [. z1 @( g, T. Y- P3 k
set-current-plot "Trends-of-Local-reputation"

+ W" e- y- j) c8 W+ y3 [# T  N% D4 r6 ], d" }
set-plot-x-range 0 xmax
, m7 [3 v2 w- X- o, x% A1 c

4 [. `# x7 l- l  p( Wset-plot-y-range 0.0 ymax

' N- g. L% p2 \2 f7 ]2 Bend
" b  s& v* h- K/ P2 I; W7 R( W& g3 Z8 T
to setup-plot26 @! Z! m4 ]# C6 |
+ ?0 Y* Q) H- B5 Y
set-current-plot "Trends-of-global-reputation"
6 H2 v: R/ o. Y6 i. D, x

! H( q; Z; ?7 g& W$ k+ xset-plot-x-range 0 xmax

' J2 {) G5 }$ e1 d! I. J
' o4 @* M# F* q1 Z( `$ l) Nset-plot-y-range 0.0 ymax
5 A4 o; L* u: y- _/ {- ^
end
; ^. r! G. ]" ~3 P- J5 b4 b2 u/ g* Y$ `2 ~
to setup-plot3
7 _' W, T2 c' x# E( T# w
% c3 X6 H7 F4 u- {set-current-plot "Trends-of-credibility"

) a9 U- g& L& ^9 k' m. Z& a
8 d% R$ M% Q4 L5 bset-plot-x-range 0 xmax
2 s' r! Q5 \* p) A8 @

) S0 Z8 T% w: z' n+ _! j9 x* f. gset-plot-y-range 0.0 ymax
1 D: [: {8 c/ X6 ?! b/ Y
end
% _+ Q8 D+ \1 I5 Q& X, O8 A: f! T+ L2 p2 n% S* Y7 i: X# r3 p0 Q+ C
to do-plots
8 r- B, O4 _- f: |set-current-plot "Trends-of-Local-reputation"
1 x. P; r6 {: `% I( `& c+ Bset-current-plot-pen "Honest service"
- ?/ L" c; T7 s" r3 H3 g* iend
3 s6 B7 r4 a; i' g
0 o% S3 ^. _! @( g3 W( n: @& ]' E7 W[ 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.
  `! ~" O, f, g
4 g4 T- \3 t# y/ h1 X: u, V; d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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