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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:: c6 V. V6 O/ v2 o% B+ V
to do-business
8 h0 p& k( |5 T1 \' a rt random 360. c% e4 X, F9 o2 S: q  r
fd 1% t$ |4 B' g5 m4 [$ t
ifelse(other turtles-here != nobody)[7 N4 m- P9 M9 z3 N) }4 H4 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.
. [: n" a( P0 S/ J; ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : I9 o9 k9 Y( ~9 V
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 {4 C8 K: r4 C; s: G" _8 U
   set [trade-record-one-len] of self length [trade-record-one] of self/ Y4 H( V3 q- t0 i- F  J
   set trade-record-current( list (timer) (random money-upper-limit))
5 n+ s( ^; d1 P' Y
1 v" h) a! I0 p# P1 a问题的提示如下:0 @: Q7 T! c; z: ^8 c0 ^

) k, e' A3 V; G3 M/ J; W8 Terror while turtle 50 running OF in procedure DO-BUSINESS
7 m  f3 n* G8 r" v8 _$ p  called by procedure GO9 d9 k" g( _% d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 D' v. p7 V/ K. Z; h, T8 s
(halted running of go)4 {  d" ~/ ^7 A

  C3 S5 N) m9 Z+ {7 x3 V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~~) K* ]: M, h8 e9 {6 n
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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参与人数 1仿真币 +30 +2 收起 理由
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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
/ n" c" \& f+ b& c/ \globals[/ Y1 l9 S$ `' k. i! \4 Z
xmax
( g% G, G& O) N( V4 k/ A* Eymax
/ }) w# o: X8 j+ z4 j0 D. M7 h% Dglobal-reputation-list6 V4 {0 e; @, Z9 p0 l6 |
6 |7 t, J# U2 @
;;
每一个turtle的全局声誉都存在此LIST* a8 S1 \) G4 `3 M, w, Y/ M, j3 ^3 v7 w
credibility-list  V+ ?& S: c! O8 I& M2 d
;;
每一个turtle的评价可信度$ O2 @' |$ O( J
honest-service
3 P& R9 y' B! t) C7 I* ]" J7 M! A, Munhonest-service7 q) k1 q' I0 I3 f8 V) y
oscillation
/ ]8 ~5 Z6 |+ S& }% rrand-dynamic* }7 q! ]) }- V% P5 E* M6 I, E
]- _9 v5 \7 B  l6 q; z0 z
/ K1 C! C2 q  i- a  T$ Z* \
turtles-own[  Q2 S" Q0 Q8 q$ F0 F4 B! O
trade-record-all/ O- g% d* S0 C( w3 ]/ |
;;a list of lists,
trade-record-one组成
$ ?6 @& R8 b% ]- r  g" `) Ztrade-record-one
8 A: Y  ?/ B! {. [$ }/ f$ z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" `% P. _# n/ l% m7 m. m4 n! U% P. P+ P! g8 W( A% J: q
;;[
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]]. i$ q8 V  W( X5 U
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]
4 \, Q% n- A. F; p; 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! W! P5 o: B9 z7 K7 a& P0 H
neighbor-total* \5 Q3 x; q& Z
;;
记录该turtle的邻居节点的数目
! U% s6 V6 E  z/ H$ t  _+ ztrade-time
" F  S3 ^0 h' [( @( \# I;;
当前发生交易的turtle的交易时间
* {8 n: L: I* c; }+ Y' Xappraise-give" V, F0 U7 G4 b& l
;;
当前发生交易时给出的评价
1 R* i' C. o% m" o+ n4 nappraise-receive
8 G* f( J" N2 e( }2 ]* ];;
当前发生交易时收到的评价
* |% R) i$ z$ v$ bappraise-time
( Z8 d" B: q1 `0 M2 N;;
当前发生交易时的评价时间
( Z  G6 j1 J  a/ u% q( T# Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ w1 N$ R6 O$ U4 D- K6 l" i* e
trade-times-total
/ i0 r4 P9 i% j! M1 n;;
与当前turtle的交易总次数
( x* g& D3 n0 S7 Ytrade-money-total
5 Z, r5 w4 }8 q* }3 i;;
与当前turtle的交易总金额$ I* Z9 m' g5 l1 k/ Q+ b
local-reputation
7 l/ a$ a2 k8 K! a3 cglobal-reputation" ^$ c2 {* x8 d0 [# u& ~
credibility
; f' f8 N8 I0 P* T;;
评价可信度,每次交易后都需要更新
. F: S& X; Z" p2 s0 S8 H) kcredibility-all3 Z) _1 r4 @/ |+ P* f
;;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/ n; Y, R5 d, ?4 o5 `9 I# E

9 U, ~6 n  N. l: i2 u, |+ 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# z! P( z/ j9 v" t* G7 W
credibility-one
' |' U2 z9 u$ g9 o+ y;;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 c6 o7 Z# p! I! c/ eglobal-proportion
$ I4 O2 D6 H, |5 u, w* l! [2 Ycustomer- A' x8 I4 J" t9 T% [! `
customer-no
4 j4 P4 E+ J$ k, ttrust-ok, J* }+ r8 Y2 D% u# R
trade-record-one-len;;trade-record-one的长度3 b# N' f4 o' w- \
]
. R7 w) [5 \) X( f8 f8 L- z+ E% d9 z  M  e
;;setup procedure! ^4 h- ?2 m" U% P

* i7 ^9 T, x" {$ G* h" Hto setup7 Z! R# ?5 x  J

8 A( \1 t6 \: B2 yca

1 F: O2 i+ C3 a# q$ b5 V) x+ _: \; }4 l( s2 C( d
initialize-settings
3 r- _2 _- j% h7 n" E
8 g1 w6 x4 D2 g  Y
crt people [setup-turtles]
' C1 J2 d, `8 }( n  }' |; M" P  j
: k  v% H& E( v
reset-timer
* {* @8 f" j3 `3 _0 B  L

6 t2 d6 W. m. E- I# ^: Mpoll-class
& O7 i; m8 x/ c% a, V( [

, \6 Z, |# s& b( c7 i$ r. ?setup-plots
' r6 n. ]+ h3 @, c% U: r/ ]

8 S5 P# U! I) S# l' }7 W# fdo-plots

; [* S! B' z, [8 qend( [! j) b: {3 V! Q
. f. m0 p, y) \8 g7 R% c% [
to initialize-settings9 G" I* v, R: q% |# l% Y

+ i8 L' l  r7 |( s1 n" p5 h+ Oset global-reputation-list []
; r  K' E* ^: c7 T; [9 J7 r3 }

- N, o/ Y& H2 O; m/ ^! R& pset credibility-list n-values people [0.5]

* S, ~( [. o1 o  F8 i, a$ u( ]' e3 w) N; M
set honest-service 0
- n5 S4 S) ]% B+ ?' l
! m7 ^1 }4 V# `0 M. ?
set unhonest-service 0
* Z. F" Y3 C7 b" y6 B: u
" W4 [- Y5 ]: _+ n! c5 d! r4 h
set oscillation 0
& A( {$ b' Q* h3 b# p# }
' y. M* H& X4 f2 S; A
set rand-dynamic 0
  [5 r2 ~, `. ?& f0 c6 s
end
/ Z& g7 V5 k* o4 }3 l3 H5 g
$ G5 Z* p( ~  Lto setup-turtles * ^9 M" J2 @+ E$ @
set shape "person"5 \) f* y: F0 M; H
setxy random-xcor random-ycor8 i3 Q' S  i. C1 u# j7 J
set trade-record-one []
+ Y% h, i: D. t! y6 ~" R" q7 K5 e5 c
7 [' t6 R/ p7 d" a, i- T# z
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 K* W! l5 u! ~) }3 Z4 {% S

: ^5 R/ E, D3 b! Jset trade-record-current []; J: \/ ?) T7 u8 z& j
set credibility-receive []
1 _: k+ L8 s8 T. u3 @6 x: K/ Nset local-reputation 0.55 G# W0 w( ^/ L6 |5 i) [$ J0 G& ^
set neighbor-total 0
3 H( }! x2 i6 W, C7 N) sset trade-times-total 0; }) Q' T( M+ z  Y( A
set trade-money-total 0
0 [  p- s# X. r: _6 kset customer nobody
4 R( W% j+ p1 c3 w( k, o8 xset credibility-all n-values people [creat-credibility]! z2 F" b- i$ Q/ l7 Q! V9 c) f
set credibility n-values people [-1]
1 o7 l( d% Q" t( ^get-color$ \7 W8 W, W- s) Z1 L
. C0 s) g* h3 v. R6 v
end* e( K* V* ]8 G( A' }

+ `: N0 P- d; _5 }$ S" xto-report creat-credibility1 i$ n+ _) f3 G) u4 ]3 j/ E- H/ b
report n-values people [0.5]
5 i5 U& R9 ]; X, @8 F" R+ Kend
$ n  X" b5 k2 @2 n$ F+ ]/ D* q/ W% g  ?7 Q8 g( p, R1 r3 ^
to setup-plots
2 e- d. d. g6 R4 ^
) E) }" U1 M) n  Mset xmax 30

; R/ g9 e- X  b  O/ V
' g3 X2 c' K" N2 v, x2 B- C# tset ymax 1.0
6 H3 \% c% G) Z  ~8 ^" w/ W
/ F" T9 ~# M' V
clear-all-plots
' H6 a1 T3 D8 f% O* l5 ?" M, E

5 }/ I1 e8 H& ~setup-plot1

4 H" w% C- }8 r$ \4 z, F
% p* W( _4 W  ^5 k# `; lsetup-plot2
* H" l* C$ h3 ?& f3 w" S1 w9 K  M) U

- y$ Z+ ]8 U4 w5 Q7 l2 Dsetup-plot3

' m  z, @: E# x! s; Hend
6 q+ d8 H! |2 ~2 Q7 K: V
4 U( e, e! O! a" p# R, n;;run time procedures6 C- x+ s; U. `; G  d% x9 x
3 o" r3 @2 A( {3 v; \
to go
, b7 g. n+ A. ], G3 Z/ x& H
, p. _3 m  r! n0 Dask turtles [do-business]
& Q, V/ [8 m9 w: k( B
end- }8 M/ ?6 x  u8 m, o
5 R2 K* O8 J7 D0 o( p& b( ?6 {
to do-business
" b9 g6 W$ ~7 a* B! w

3 k: y! o9 ]# @$ o( x- U5 h5 a2 r: `6 C+ x  t
rt random 360

% X% u: |6 c8 ]
; S! W( `- s$ e+ `( j, {; Bfd 1
0 }; I0 b" G6 P% D, [5 S
9 Y4 z6 U- {& V/ \% s. G
ifelse(other turtles-here != nobody)[

$ f  J$ _9 S5 \1 K* Y" R  Q
' d5 p+ H- b1 k  [$ `1 _8 Tset customer one-of other turtles-here

7 F9 x1 z! _& E8 u
  h% ?: t; K8 B4 t2 e( n+ Q) j;; set [customer] of customer myself
# w8 L* g4 P$ n- Y3 T- m

7 [, I% r  ~/ t9 J7 K/ s- Dset [trade-record-one] of self item (([who] of customer) - 1)& }# S3 d$ \$ Y) |* m# A
[trade-record-all]of self
/ r  _, H1 L9 ^! u  g  Q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( d/ @7 K1 g. L/ u+ b$ O
/ m* J0 u+ C$ j- c4 A" ^+ e. i
set [trade-record-one] of customer item (([who] of self) - 1)
( B+ h9 L& J, I& D7 B$ U( B[trade-record-all]of customer
+ _! t: @$ h8 p3 e9 l* P& A
+ G6 K" d% W0 v+ t2 h- g) ?
set [trade-record-one-len] of self length [trade-record-one] of self
' W! ^3 E! ~9 J2 {  E* ~
$ \8 F4 h( ?# n1 Y
set trade-record-current( list (timer) (random money-upper-limit))
- z- P* N( B- y" X4 d! b$ f2 Q

" r2 N. G1 F* f6 R2 j3 hask self [do-trust]
! ~" o1 i! o( E( ?) j;;
先求ij的信任度
4 M$ T+ {. s) j/ N/ C, X1 Q/ m4 ^0 }9 J& Z+ s& E4 s- ]
if ([trust-ok] of self)2 f+ c5 v& w1 b/ p+ q# Z
;;
根据ij的信任度来决定是否与j进行交易[8 D' }3 g: M: l; c0 z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  u8 y. B8 m7 G2 i. r+ S
! n% P3 H8 e2 @3 Z) e5 }4 Z: J
[

" ^; M2 J# l0 R. `3 v8 ]& T; b5 ^# ~) ~; a8 s4 }' K$ c
do-trade

# h) j( v0 ^. I" Q6 I' b$ @  S1 T; m3 {/ {% s
update-credibility-ijl
; L4 B( h4 T" [9 w
) T/ T- h2 E, w( N( }& f
update-credibility-list
+ X; P* l( f3 z$ L2 @0 @
9 |$ |: ^* \. W5 h+ @5 T

5 C9 ~  V" I8 p6 O' k# Aupdate-global-reputation-list
  W2 f$ ]" I2 r( ?

9 `; \" U% {& h5 Jpoll-class

2 |7 @5 R6 w% s3 C( |$ ~5 Q& v' J
get-color

" l9 s: E! R# \8 T. R- F+ d" V3 r0 a3 j; t
]]; k6 h0 m6 j7 o' e

* {+ {1 m4 ~3 C/ b. G/ |;;
如果所得的信任度满足条件,则进行交易6 s+ F* k1 Y- B" t4 z1 f

- ]$ S0 Y5 G! u/ l. v: [[

! m  y, W& Z, U& J/ O; Y
. `5 L) T% Q9 w2 z- ?# O0 b! zrt random 360

) x; z3 L+ X' u6 W" n6 R
' Q! O* }9 H8 j8 G* w6 y; `fd 1
1 ~# x, A- h, z# R
+ _# o9 R8 E6 Q% ^, B' _3 q( @
]
& R4 g  G2 w. S

3 b+ e' \1 D' i' y3 H5 }! ~end

; P! _) s  C- `6 p( |5 V
" Z9 o3 ^* ]5 Sto do-trust / \2 @% _( q8 |$ ^6 P
set trust-ok False9 R; [( b, B% I9 V& m  c6 [( D
9 q! l# d$ o* P* R: W# S  J
, ?& o% L3 C, ~4 |
let max-trade-times 09 g$ s9 s3 F# t4 ?& D6 Q( z3 a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ c2 I9 ?5 w1 y2 C+ w4 U5 V
let max-trade-money 07 g$ X7 G: p9 k: q6 S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: E: O, z5 h7 `, D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ R4 B* U: p- o3 s: K3 m
+ P# G. B: b5 f: l
$ `* j4 ]' j. o) b
get-global-proportion
( ?# K7 c/ N/ e- s  xlet trust-value8 y  i7 G, p# O, r" T5 m/ Y9 H$ ~
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)
& ]: s! j7 Z% w6 @, y
if(trust-value > trade-trust-value)" q- a" Y  ?# H5 U# H! b
[set trust-ok true]( R- O2 \/ s7 }2 U* c, h! G9 z6 x
end  J' H5 {+ J' K$ n, H

$ Z: g/ U9 O1 @0 P0 F# Tto get-global-proportion- a- s. x+ K5 L7 e* f5 N4 ~& P
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, \5 V+ \" V' s! q& ~' C4 G[set global-proportion 0]
6 y4 m) ]) g3 R  u& k[let i 0+ X) r1 m1 J4 f3 m2 u' M6 @
let sum-money 0
" A, b6 S) w; u# \while[ i < people]
' E1 n* A, v" P3 K& y+ R# }[
, w0 h$ S5 W+ O5 N+ sif( length (item i
/ X2 V2 h0 n9 }6 |- f: G6 v6 a[trade-record-all] of customer) > 3 )

6 D) ?# b: c( X# \9 N7 V5 i2 M/ S5 l[
: ]+ C5 j2 B& N1 `5 \4 O( vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ z. M$ p! ?* t. d! X7 p]9 S0 ]: _0 l5 Q8 k
]( j1 ?' e4 s+ h
let j 0
! f* w: I$ u, s  T8 ]let note 0
4 c7 u. a/ g! q& Fwhile[ j < people]2 J" o8 d; W3 e) H
[2 t; C  I1 M) K# g' ~
if( length (item i
/ ^# I# y" W$ w3 l9 O% C) k[trade-record-all] of customer) > 3 )

$ e' Y6 e0 K( z  A[1 y4 v! u& h: w* u1 A% T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 [) ]" ^6 N( G+ h" ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 \4 B0 V- o7 f" C0 Q& w& T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 k7 Y& a7 q: U6 D. K! b* z
]
: K( d( l; A  M]
' i: M* |4 F4 Y( dset global-proportion note
$ {4 J' ?1 Y9 u6 w" j0 h]
. I, r" G3 }' Iend( O+ d" W* [" l1 ]
8 D: Y% U: m3 z5 B1 G( a- K# c
to do-trade( ~) A- o$ P/ F1 }
;;
这个过程实际上是给双方作出评价的过程
% |( W3 }- {2 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; l" B8 r- `6 |# H/ P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 ?. m& Y& I- U+ e) l
set trade-record-current lput(timer) trade-record-current! p  n' p  A! l( l" W3 C! b
;;
评价时间$ ~! ?4 q, C  N9 T3 O1 Z7 ]3 N3 ]6 |
ask myself [9 F8 _# J7 D4 M/ z; e- w/ D
update-local-reputation5 O$ g6 t6 }& s+ K
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ M$ ?& T) X2 s/ t: C/ V! C* D# @]2 t, c+ l0 }9 \8 D' c, i9 N
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 @) T2 x7 g7 C
;;
将此次交易的记录加入到trade-record-one
$ W) t8 ~0 f; A( S8 l# Vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% r4 t! Y. }. O. ?let note (item 2 trade-record-current )
4 V' q* Q+ G- o' J* \set trade-record-current- m. U( e) X- D7 S$ F( a& E* [
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 j5 ^$ u$ T" Tset trade-record-current
5 O# \4 Y4 `( j5 [2 ?(replace-item 3 trade-record-current note)' J* r9 M2 k7 p! `

. z6 T# d1 J* S( \  D
4 \9 F' z2 m" V5 w$ ^( A
ask customer [
1 v! _7 \- u1 I, K) r! Xupdate-local-reputation: M( M' P8 i7 I3 E" v$ \4 y' g
set trade-record-current. t( \2 w# ^8 B4 k6 `. c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! S( B2 n3 L3 }
]
" x7 Q' Z4 h. D
* R& l$ o* a1 _) M

3 T8 L' Q: L1 p: w) Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, W, p8 @+ X! S$ a$ ^
# s) P+ c8 A: D$ J0 J$ z" F2 b1 @9 U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, E6 c2 w* }9 T$ g8 g/ K;;
将此次交易的记录加入到customertrade-record-all9 T0 K0 Z( X5 E
end
! G8 |& X" d9 A' D+ o
' ^. E9 \* f- P" O6 z7 Qto update-local-reputation1 k8 f) T, D3 ]. X( E9 w1 v6 l; D
set [trade-record-one-len] of myself length [trade-record-one] of myself& T" \) g5 t/ S0 i& C, C# C/ `" S
- W" l- ~/ k. c/ r0 ?" |; g! }

& k$ \& D0 V: n' w% B+ ]3 W6 d* j;;if [trade-record-one-len] of myself > 3
' n$ |4 S6 t2 f9 `" V
update-neighbor-total  R& m8 P. R! R& |% B
;;
更新邻居节点的数目,在此进行
1 w% }9 h: [, t) I( u" V$ i( Y; U0 @let i 3# W3 \6 a# i1 i! a
let sum-time 04 }# R. R7 k, }- u, {
while[i < [trade-record-one-len] of myself]( W- H- @1 {2 \% B* O
[
% g; s* V8 X! Q( c4 E4 u% eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' K. D  O, t/ `7 n) g; u; B9 v% Iset i
+ f+ }0 r5 |1 i: J. n( i + 1)
' i/ `, n& V, H
]9 T; e: [4 I/ P. ~
let j 3* ?6 |: H7 y% T) x2 [0 P
let sum-money 0! ]( [1 t7 P% O! H' n
while[j < [trade-record-one-len] of myself]
7 [1 H0 x' o, ?% O[+ j  q% h$ ]- E' i9 }
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)# x7 G  X2 A% V; Z- h0 r
set j
" J: d6 I& a- j) X) p! Q" [5 D( j + 1)

6 @9 }( m: v9 D]
9 V+ l  G/ i8 |% \$ G; slet k 3# b/ h7 M8 h1 T8 h5 `/ i& {" G
let power 0; j: T8 F/ }2 M+ Q2 A$ w7 N2 ]
let local 0
4 u6 W$ K: Y$ F7 `5 ^* fwhile [k <[trade-record-one-len] of myself]; ?( G$ p, w# W+ [: t
[
8 |7 \) Q$ T  v# Y9 lset 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) ! O. k+ C# @* p& ]1 x0 Q& {* K  y: H
set k (k + 1)
8 W( J5 U/ _2 K7 G; @' w, |; |1 l]: d0 Q. `% n5 H5 o1 S- O
set [local-reputation] of myself (local)$ h; w9 I4 ^, V4 Y  M
end
1 E3 r3 H: m7 [% M) D2 j* X$ W5 h$ Q/ C% N* w; O' L
to update-neighbor-total
4 O8 u+ f7 {4 q, t) _; P
! x; z# p7 {1 n+ wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], G' B* M  K3 J

# |' y7 {3 w2 h, ^& _

6 z) o! d" T! o" r. Dend+ y8 ^9 b3 q1 f% Z0 I
/ b* H  s6 F/ W+ i7 o
to update-credibility-ijl
3 `6 e; ?$ \) F! p) V' p4 C' X' N  {- Y3 H* U% @# R0 P3 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。
1 T7 T( h, b$ r$ m, Olet l 0
  \1 c5 J2 v( v. I$ }& `while[ l < people ]
0 o, q( G- g3 l2 ]+ F8 v;;
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; i- J0 t/ {  T[+ `. Z! z# r2 n2 s) ]6 A% F7 @
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ _7 r" J- K+ S$ @+ Y% L5 Nif (trade-record-one-j-l-len > 3)& V$ c* P' }$ }' m! B/ l+ 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" ^6 U& D2 ?% I* {5 J
let i 3
  V4 V- H$ `; ]9 h2 V# elet sum-time 0
. b. |2 V2 b3 V8 `2 ]) x, gwhile[i < trade-record-one-len]
6 {# c4 [/ _0 V[9 o( |& e# m. L& C7 L& k, q8 l5 a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" R& W+ L/ o& x. x, \$ x7 s+ b0 j
set i
4 H' Q" n) C7 d( i + 1)

! m* p- F1 B; J( H* O- E: t]* x( O. @. W6 T% o% H" R* Y
let credibility-i-j-l 0
6 ], I# a* k- \" ?) l4 o- f;;i
评价(jjl的评价)9 m5 i, |3 d- B; N
let j 3/ b0 `1 d1 Q6 Y. T
let k 4
% ]1 r# l6 x( H# rwhile[j < trade-record-one-len]
9 y6 C0 H/ u5 f2 G  a[7 ~0 p* L7 l7 i8 C% z+ m8 k
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* x2 B5 B  V; {7 b: a( W& }" }
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)6 T/ d* m  m; I
set j0 r. R6 X: U8 Z7 Z; l
( j + 1)

! |% y9 ^; u+ k]
' R* I$ H3 y) Z# h4 q) |+ kset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))% a6 X' A$ G- L0 ~: L
9 W) Y" f0 c" O7 w4 ^+ `, ~
  b. E) R; `1 j9 `  T3 @; d4 |
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 i1 b0 I: ~7 R, c  ]$ S;;
及时更新il的评价质量的评价% y+ L+ D( y$ x7 U9 o$ Z9 e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 {5 C  @, \# e! R0 \( F
set l (l + 1)
) x1 Z. |' z6 n3 J2 X2 b- }]
* w5 {8 w, I7 r* M1 V( uend
1 A& ~9 {" j! P* S& z. q  n8 Q- |* g5 h. y% I. ^6 p
to update-credibility-list5 c0 [6 i7 a) u* I. P
let i 0
) F7 L3 i" j+ I4 \0 fwhile[i < people]
9 g$ `7 C  J/ i) ^3 |: `+ `[
( ^) [, p) F, Q6 Plet j 0
0 D4 y6 H, k3 O: \let note 08 j: l: t+ [# h  ^$ Q" j+ r' Y7 O4 i
let k 09 P7 }, B/ c% P6 U0 j8 ~) H
;;
计作出过评价的邻居节点的数目
5 v5 p& K* y1 Jwhile[j < people]
; k! @6 j- Q2 p4 Z[
% W% |. A5 m+ v1 Eif (item j( [credibility] of turtle (i + 1)) != -1)7 u1 ^/ }, H; m8 r* ?. s7 a( q8 Q
;;
判断是否给本turtle的评价质量做出过评价的节点
! x; D1 X0 m8 U, i& R[set note (note + item j ([credibility]of turtle (i + 1)))
" \% T/ [* g) l  v;;*(exp (-(people - 2)))/(people - 2))]
4 o* L9 z6 O7 H2 D: F. k
set k (k + 1). J( b0 @4 g6 V) @# g) T3 k6 t
]" K2 e7 D5 C! }0 x3 s4 f
set j (j + 1)
) n8 Y8 y4 w( A) l3 T. |- h]6 I  w' j; {1 Q) j0 t; S
set note (note *(exp (- (1 / k)))/ k)
( Z9 D# N6 q" i5 V% F6 @9 Aset credibility-list (replace-item i credibility-list note)4 Z; E+ b7 f; w$ R# k
set i (i + 1)# _+ M1 `& z" n% P8 k/ W' H
]
; ]. L( m, F1 `7 B1 S- L1 d6 zend$ E" q  q  `, d8 k5 x0 P2 i. N$ h
5 t' g6 n4 A4 f2 W
to update-global-reputation-list
5 @7 P5 k2 d: r: {& ylet j 0  G( M3 J, G9 h+ k# f
while[j < people]3 C0 j* `6 {+ U& f
[
) [% x2 c/ C( n2 E9 J8 Jlet new 0( v& Y, F4 C% E: M% `3 x
;;
暂存新的一个全局声誉; b% b2 U7 K: k8 g4 _8 n, v! Z
let i 0
$ S0 f0 h* ^2 w0 c& |0 Alet sum-money 00 [5 L% z/ M  n0 t) W: z2 v
let credibility-money 0+ g9 Z( k0 n* p: v. s- Q7 M/ t4 h
while [i < people]
( f: p% }4 D+ [% U& v) f[
3 z0 a7 B3 Y: {+ m7 ?0 q. Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); t0 W" c: y# t5 ?, Y2 |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ i0 s! m6 O0 D' o* g" U$ f( Sset i (i + 1)
. f. X% ^4 x9 q: R$ y6 w1 c+ @]
  ?! T6 D5 T) j( v# llet k 07 V) @) _1 u# Y- [( I7 l' U
let new1 0
! R4 k4 o( w+ K+ _2 o& w6 D) hwhile [k < people]* a7 E$ o4 B8 X' s  }" p  ~
[
2 ?3 n3 {7 c: o, S/ W9 ^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)6 F, h$ h% r4 B2 [
set k (k + 1)
1 N& ^/ B. X) e- z# i0 @# b2 C  t9 E]% P- a/ B% j8 V- O6 y7 S8 M
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 z0 v$ {4 H+ h" H$ b/ {6 a* @
set global-reputation-list (replace-item j global-reputation-list new)
8 c5 g# Z* H4 u& ~5 g% lset j (j + 1)% h8 f9 P% {  t( B' z4 S' B" q
]- t, Z- x$ M0 r4 u' r6 ~
end; |& C9 Q5 h( O0 X5 y

$ C& a: y( M$ L5 Y
9 ]: k; q1 j/ ^& I- R  ^6 A
$ Y* ~- k; P# v0 w" A. A8 D; Eto get-color
+ c- X/ ], X+ R: h7 I' R: t9 A: W+ M& T. A9 ^
set color blue

, F, C4 Q* P) ~  ^end
& F& k4 D: Z5 [: Q" z! S* V
+ a, K+ A: g$ @4 y- f0 }to poll-class
0 y3 g- S3 z6 y  |end/ a! F4 e, ]- ?2 ]: E) n. J

  {4 _7 N- }# {to setup-plot1
" M' o0 G! U- q( O% q$ p6 n
8 ^- P/ ^* r$ y& ~& M  xset-current-plot "Trends-of-Local-reputation"

9 H( F8 T3 A& ], A  M" ~6 {/ V6 W3 L" {
set-plot-x-range 0 xmax
, L* I5 M' T$ `! J2 a5 h: [
* O* @8 [$ `& W7 C  h
set-plot-y-range 0.0 ymax
! r2 A3 W8 j. \! E. r" K
end4 l, D' N( S$ O3 M, N0 i; ?
6 J- G4 h" D5 q* x
to setup-plot2* M3 t4 D: y% O8 a- \% e" ?

; ]# U, u/ D( w4 I1 \5 V) H+ F  Iset-current-plot "Trends-of-global-reputation"

0 Q, t. f6 y7 z9 p
% ~  b# a: M! ?! c% }set-plot-x-range 0 xmax
/ c7 y4 {  q$ _+ `: F/ A; i
5 f( @1 J( i8 w0 `' h. b
set-plot-y-range 0.0 ymax
' z5 q+ d8 M0 M' j
end( q* k# v& V  t4 K& M1 \; Y
3 P# F/ a! f9 Y% R2 e/ B  e& r
to setup-plot3
, K( K, j/ B+ D7 b, Y4 w5 i9 X) g5 l7 M8 f
set-current-plot "Trends-of-credibility"

" I- i; D, |$ j  D: j* ]/ r) ^# h4 }( |% }! o, P
set-plot-x-range 0 xmax

2 T$ z! S; a. @# M
+ y, {. y) D* c- s& M3 t: Fset-plot-y-range 0.0 ymax
8 Q6 g/ N" C6 J6 E9 O9 t3 O- ]
end
! e/ y; _- c4 _2 u8 ~
; }9 Y* w6 n2 l4 k& Ato do-plots
, w4 ?3 q. M0 A8 h5 @- bset-current-plot "Trends-of-Local-reputation"4 ^4 j/ S1 h1 Y& h9 }
set-current-plot-pen "Honest service"
% X5 a3 B2 b; y- D* Send- o( B9 h* K2 `6 u% h' x+ `

1 _- |+ ?" h( w8 L[ 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.
) c, J% x* D8 y6 T+ p. Z! p+ |* W6 r% @
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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