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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:/ x/ C  y( g2 Q. Q) c4 z$ v4 O
to do-business
1 }! g8 [) i: Q rt random 3600 P" a( v& t1 c: p2 b
fd 1
$ F* ^: b  H4 w4 j0 }- R ifelse(other turtles-here != nobody)[( n, V) W+ H$ d0 _! \8 L% {% 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., e/ A! o% N8 w) D+ d+ V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" c/ [& [+ H3 M) k) r+ m# K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' g' c# L( a0 Y" o! v; @8 w7 W   set [trade-record-one-len] of self length [trade-record-one] of self' |' o  j8 U5 R" p" ]1 E! R
   set trade-record-current( list (timer) (random money-upper-limit))2 j: T4 ^0 g* z: J( L4 T' ~
" A, a& X, W$ }2 p0 O3 V2 c
问题的提示如下:1 E2 B! j. V7 v' Y# C

) G" b+ M4 [  i6 V" \error while turtle 50 running OF in procedure DO-BUSINESS
: `% ^# J1 Q; o5 x3 t* o6 c  called by procedure GO0 B: V8 k3 m+ Q5 O  j/ U6 y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ f* h& D, R& ?! Y3 M% f
(halted running of go)
- {, ~4 U4 h4 ]. r0 {( F1 Y6 [4 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~~
9 u! O+ h4 O3 e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6 R  R3 o3 A+ x6 d8 i$ f
globals[
5 l+ }* p; `( x8 o2 i- r+ Hxmax
/ n0 f# R7 C0 ^9 U+ v  mymax2 S: h$ o* l/ x$ ~& G; l# l) V% W
global-reputation-list
% {. L' g, H0 j( {' z5 W4 q2 o2 R5 o& g
;;
每一个turtle的全局声誉都存在此LIST
& ?4 ?( j$ p" R8 Fcredibility-list
- G9 k6 ^& i2 a/ Y;;
每一个turtle的评价可信度
% \4 e! g! _; n4 Xhonest-service
5 L/ J% t' \; v! q' `0 }$ n" sunhonest-service& Z! Q, e: W! G2 s! r9 X7 @" c
oscillation
$ B+ A% w0 ~) }+ irand-dynamic
, Q5 |7 r5 S$ Z! n+ ]& V]
) I+ I) d, F% y# H6 d. R3 m) B% b- v& T. O- |4 `: j* O+ c% Y
turtles-own[
- l' N0 D) x1 y8 O( itrade-record-all, a, |: z. N0 p. t. b
;;a list of lists,
trade-record-one组成9 C3 J/ t% q2 N  u1 Y0 y
trade-record-one
; p1 _0 L2 A; y0 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
; ]- }) b! I: F! X% h4 b
0 i, ]  e% r% I;;[
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]]
' ]8 v- u- c, v0 ~$ n; i& }4 qtrade-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]+ `7 P5 X8 B- ~# j1 P4 b
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
7 n* e7 I1 Y. q0 |neighbor-total/ ?: b1 |$ p3 `5 h' J, t3 Z8 J! B
;;
记录该turtle的邻居节点的数目- R5 q& @* w/ H
trade-time% A( ^1 c% P- Z
;;
当前发生交易的turtle的交易时间3 C' G/ K+ b7 y- }& M4 G  K- |! z
appraise-give2 T  S' g" a( C# N( W/ b
;;
当前发生交易时给出的评价
2 f/ _: G6 C0 U* J. J; nappraise-receive/ b3 J: {( d" k& }( D8 O0 U6 X
;;
当前发生交易时收到的评价
0 @) ?, _* H4 W4 d5 Wappraise-time
+ ]: L9 _6 j1 y) R! \# y9 M; o/ };;
当前发生交易时的评价时间6 T- t6 H" O1 H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& b- g! Z' H6 i, d& ytrade-times-total9 S: E# d: f0 l, M4 u) _6 j
;;
与当前turtle的交易总次数
+ R, z8 `3 @: T) G' Rtrade-money-total
/ B: {7 r* L1 Y* G1 j;;
与当前turtle的交易总金额
- H4 m6 P; }2 c# }local-reputation. ^2 K7 y7 a9 Z1 m* k5 z. ?
global-reputation
& r$ |+ B" l3 |credibility
9 e  `; V6 R/ s" h;;
评价可信度,每次交易后都需要更新3 Q- l- e3 R+ f% ^* e5 @
credibility-all
  r" [0 ?/ |& W1 y' L: |;;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
# G& b9 _$ i1 Y/ |) R
* d" I+ l9 y$ E7 ?;;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
4 T* Y( d; P9 J3 B$ L. e, e) ?credibility-one  L" r* n& D, R8 K# b) u* V
;;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
3 t( A! Q. B+ }global-proportion
# T$ A0 r9 z" zcustomer
2 i8 [2 p! v; a' W, E9 s% ecustomer-no
/ ~! C( `+ e1 Z" l. b" h2 V/ atrust-ok4 u4 N4 s4 f% G1 f* J& C7 k; ?
trade-record-one-len;;trade-record-one的长度3 r. V# Z( k6 v7 d; Q- T" ^
]
. k4 j; x8 w" P1 {8 b. f) X4 p* X! c! i" r
;;setup procedure, i0 N( [% W$ W* h5 k; E
/ m6 y% c* g1 ?8 d: s$ i
to setup
# C$ r$ P* Y7 R& n! V0 O( i& D8 D2 o+ B5 |
ca
% v8 w0 W, H; C0 w9 R
; y, K0 p" g+ H4 B
initialize-settings
; u& @; T8 v; V) n" t/ s* W9 \

. h3 W- l( W# a0 F8 }  ?; _0 z" hcrt people [setup-turtles]
( S: q& Q. W6 Y0 a$ X  A$ M. H  p
5 ^) @% I/ j6 w+ M! ]. w0 i
reset-timer

: w9 U' \' F4 ^9 F' M, r- \
5 |8 G( q0 a1 g! O+ tpoll-class
  C( E3 H$ Z5 R7 L4 c

/ i: F* ^- u! @3 Z; T; ysetup-plots

4 G; ?, Y' w% [$ i8 B8 Y$ k* G( P/ z5 n
do-plots

- D& d. ^) B' `" y" w3 xend% Y/ ^3 P+ j  d7 W

9 H" g3 g% e- m; A" Nto initialize-settings
4 q+ o9 d  \) z) H0 u; V; V' ]/ P& s  _
set global-reputation-list []
7 C* R( w8 ?1 A3 Y3 v3 F+ G

7 \3 i6 b0 l" t4 g% J1 C9 Rset credibility-list n-values people [0.5]

) x0 K; x# w; P) \$ b9 G+ R0 r8 q5 x  c/ t4 e
set honest-service 0

: Q' v5 T8 F$ w' `  j5 i2 A* y! e( n
set unhonest-service 0
6 }& |+ i6 s6 q; H
0 r$ J/ R$ P1 V7 b
set oscillation 0

; |5 h4 O) L0 X9 f* t9 Y
6 l0 ~5 t4 h. T$ G" v, U1 S: Dset rand-dynamic 0

- f1 h7 j3 `: i1 f8 Z$ [- R/ }end0 E7 d* }# @) t$ q3 q! ]
& X! E7 }8 b: H* j' i: l  i
to setup-turtles
0 r7 K8 B& w0 Pset shape "person"
& ?7 B/ |7 F' b4 Y  nsetxy random-xcor random-ycor
1 w! O. _% N8 g7 ]8 ^3 cset trade-record-one []
' U) Z( w- ]/ G& |; C
6 _* `  o. |$ z0 E
set trade-record-all n-values people [(list (? + 1) 0 0)] ( [/ |2 f4 A  ?7 C% X* I1 d

: _/ O0 q# E' Y/ Bset trade-record-current []$ g) ?" ^( D* c) z3 k6 G
set credibility-receive []
2 h5 d, o# U% }1 D# lset local-reputation 0.5* A, |+ m) c, {1 b  r
set neighbor-total 0
5 f- [: s& H3 h7 M$ bset trade-times-total 04 y; M& r0 {( a  k
set trade-money-total 0" q5 J, w: q" S2 J4 V
set customer nobody
) f+ w8 Z! d2 B7 W. wset credibility-all n-values people [creat-credibility]
6 c3 H; H- N5 u; wset credibility n-values people [-1]4 m) I7 p/ d2 g4 u1 i
get-color
, d. B4 C( E2 t: K* l0 X
- g2 o3 `* ^( r! z
end
4 j7 p' R$ Q" @* e. B5 W% @' m* Y
" F2 R3 @: X$ g: Z4 |0 {" s& Bto-report creat-credibility
) m) H: ^# t1 Zreport n-values people [0.5]( \" S: ^0 g) T
end
3 {% \. B: U: p) _( o+ M: F
. V  g8 Z! H( }" `to setup-plots  ]& ~* N/ L. }+ I; S9 ~1 G

( c2 d4 F7 l2 ?$ K% s5 aset xmax 30

2 A. C2 f0 X0 I- [7 F
6 H  ]5 A% ]! ~; m3 vset ymax 1.0

$ T# X/ f* d* p/ c0 o( Y. `' N7 |7 b* o; p& U" A
clear-all-plots

4 t! R! i! _+ }! O$ M
% i0 h4 w; t  O& i9 Gsetup-plot1
9 m/ ]) t; u" N: L4 V
+ _* S  N1 ]/ h4 V+ n& t
setup-plot2
2 E! P5 H+ R% r1 F' {( w- h
2 \  M& \( U4 u: O- U1 g7 f! J
setup-plot3
  x- k+ t3 V  Z1 P- v2 N6 `
end8 F! K/ d: X2 B

$ _! f$ d4 \5 s. d1 ~;;run time procedures
1 H+ |: i# A8 M/ g  F. t
) Y/ v3 X. j, O: u( M) Jto go  M4 W! t( R) V. }  t
/ C) s7 ?5 @$ n- R& r
ask turtles [do-business]

/ v/ ]9 g( T2 l# N, l/ Q7 i! z0 f+ [end
9 \! _3 B4 C- l, j( |7 Z9 Z
. l6 D3 D4 K. z5 o# fto do-business
5 W/ \3 `! |: i3 }. I) E' |

$ S( i( \* w7 S  X/ }: d5 K! T: A' w# g5 ~4 }& x; A  Y
rt random 360
( ^0 r! g. h. B( S$ {

: `3 D- F9 c: ]/ \1 r( c- ~, {% r. M; nfd 1
9 u( O- g( T: k% u+ T" U  l/ t
, w  W& t7 `3 i  r/ o, j& k
ifelse(other turtles-here != nobody)[

6 S4 D0 Z. `: z+ i# @" I) }' N& O! \; E; {) q
set customer one-of other turtles-here
7 z2 T- ]' ]5 h1 u

* f6 z: n. @- t7 L' K  i3 H3 z0 a;; set [customer] of customer myself
  d2 _! v$ \! J7 t" X6 n+ q9 w
/ a! M( {: Q, f9 c$ z) h. W
set [trade-record-one] of self item (([who] of customer) - 1)
: T$ L6 v7 X( a0 ]# g, K  B8 N[trade-record-all]of self
, H  D9 W, w% J7 p% O8 r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 A& L6 I8 v4 Y* A" u- g0 V

3 ?5 |; P7 B" k2 ^set [trade-record-one] of customer item (([who] of self) - 1)9 k* k( L( s( r* A4 l1 d- ]2 y: L9 j& x
[trade-record-all]of customer

- R( M) [& }' w# s* z9 l, I5 D% A
set [trade-record-one-len] of self length [trade-record-one] of self

! E0 S) r# T+ X9 V7 L- O1 a- Y; J& H3 c8 \8 b1 G6 b
set trade-record-current( list (timer) (random money-upper-limit))

' B1 g! d6 v5 T! J$ M6 y* n8 p1 ~( ]2 `
9 p8 d" G+ _" Y1 h; gask self [do-trust]
' L' ~. \* ^7 i& V, k;;
先求ij的信任度
" g& D. H% ]( j, j
' A  N+ S- w8 P1 S  @8 kif ([trust-ok] of self)
6 {1 Q  J2 C# u8 ~" x;;
根据ij的信任度来决定是否与j进行交易[/ q) o1 a; q! a1 n* M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 g. l# Y, g6 K) k+ _- a1 L

9 l- N1 p) _# v- Z. a[

8 Y7 c. O4 k( @8 D$ k$ q" K7 d; Z5 X+ n2 T% G( G6 g2 j  a
do-trade
& G. c5 K/ I2 Z2 }0 o

0 ]' B. g2 m" U) |8 U$ f0 xupdate-credibility-ijl

' l5 P) o! q* @& z0 z' s% o& w+ @& n& E/ x2 Q" u! t( }) c
update-credibility-list
# H+ W/ f' I7 Q% f( p! b; C

0 E$ j1 J3 [) Y# L0 I5 |0 ~
$ L4 a1 J" q# ^0 U# a; [1 Supdate-global-reputation-list
4 h# K9 y* M! _$ S
# ]! f+ W  ]. k$ ?3 U5 m/ v
poll-class

& e* p" L  q" Q! J9 {) s6 m# I& [4 e! h. T/ p
get-color

2 j5 h! g1 m- M4 M) I" i: H) S  N, X* F
]]( j. m! ~& J$ k( o( U+ p

! l0 l$ n1 Q2 B: y3 l2 Q;;
如果所得的信任度满足条件,则进行交易
2 h' Q/ _1 u. t/ N; W! I
* s& T# J: k' ^8 o  X6 L+ v[

6 k2 j" Q: L8 D! v2 K; X2 B; a2 `: [2 j6 \" l. l
rt random 360

2 d% r2 `, v$ C8 c2 m; C# q7 u
0 a; o4 h) R! P/ ^7 Y  {fd 1

( b! f1 w6 {6 p3 g0 w- s3 j4 a2 H8 m+ F( ?" o) C& H
]

  k4 L& b  a& M" b' D3 A; X7 a. A; Y8 q$ B1 }$ w
end

( ~" K" g  W" [: D0 c5 r" f
3 T8 M; B$ {4 |, i+ _to do-trust & m: |6 }+ t- q. e! P
set trust-ok False6 C  l# F0 C2 m" A3 x
8 m2 }2 E- h0 T) I, n8 {& W! A% ]
6 f1 v9 C! A) a; r: W
let max-trade-times 0) r4 E( R* H4 C9 M4 w) i2 i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 r2 L  y8 e# hlet max-trade-money 0- x/ ^9 E1 b# Z" L, t, U8 |. X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; v  K4 E7 K0 p0 D# t3 [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 y3 |( F* \3 z  K$ g& T, D
9 d" E/ W, r; y/ f7 p/ j  B

; c" t, `5 ]8 Vget-global-proportion3 i, O$ D7 w: i- i/ p# h: k
let trust-value
- o+ G, i' H0 r5 G7 D( ^9 T; z7 Ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 X& p& E9 \2 j0 {- Z
if(trust-value > trade-trust-value)) z9 ]0 {& `4 s& m8 z, j
[set trust-ok true]
! c5 g$ ?  j( y6 ?$ S$ Hend
2 C+ o. j2 i. C# a$ [
" z) Z7 \  G9 M! p1 M6 k7 yto get-global-proportion4 V# f7 p) o# s9 N5 x5 t% v# z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, Q$ S" y- n5 K6 c3 i# `[set global-proportion 0]
: K8 H6 g9 S4 b. \[let i 0
! Z4 w' }9 z( l+ Nlet sum-money 0
* `; L( x  G" Fwhile[ i < people]( R) L0 P* t4 F5 E& K0 Z
[
1 V5 e& c: a, l3 S- @if( length (item i  i! @6 {. a) l1 ], N% j  `. `
[trade-record-all] of customer) > 3 )

* l! N$ Z8 w& d; G[
- K9 k$ O1 @2 f% Q& z, T: e6 zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: e0 l( g$ z  \; [) t+ Y! I]
6 q4 u/ J+ D# J! _" k9 j4 Y' [' ^- P]
4 n+ X$ [* L4 O% O' |. Klet j 0! ^5 {$ z7 n& \2 `5 y
let note 0
* K* o  X( j; [9 {. g. Vwhile[ j < people]3 e& Z, r  F/ X  E' q" p
[* P& y, H( Q& ]- K+ S, r& j0 m
if( length (item i7 S6 u8 d6 C. L$ L- @6 d- f
[trade-record-all] of customer) > 3 )
* P. I) p9 m) a. F: |
[
- s3 N: |7 g9 P9 W4 V. Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) B* B) n) X5 z) X4 Q( t+ [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; t; [( G( F4 t2 o8 @1 n[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* \* u- l7 g! S2 ~# `* g& {# N7 b
]( ~- I( ^0 A+ G9 _' m1 s
]/ P6 [( c! d! a2 E
set global-proportion note
) ]6 s0 a" ]  U; f; A6 D  m]. P: Q3 k  d9 f
end) Q: X$ |5 f7 G; i5 `, r

/ D) y1 y& G: A, v/ U, q9 ~& s/ T, dto do-trade/ z% z7 l9 O6 y+ {( [4 _1 ?0 t
;;
这个过程实际上是给双方作出评价的过程
# J# O) o1 I5 Z6 u8 |) `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( G+ s' W2 r: N, N4 F$ {7 G) u& e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& Y3 V9 b( \! @4 e# `set trade-record-current lput(timer) trade-record-current, R, S7 k1 G6 B2 Z
;;
评价时间
- _& k5 s- `% ?3 V& D1 |6 S& Y, Uask myself [
' Z  _, m) G, D8 wupdate-local-reputation
1 x4 S3 m% A$ V% f4 dset trade-record-current lput([local-reputation] of myself) trade-record-current
5 z% Z' q! S% C]
: A! {- g9 Z4 O7 _) Y- r9 F; R" i+ s- aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- H6 ]6 h( [- i7 @. d! o;;
将此次交易的记录加入到trade-record-one
4 \* ~3 w. f( n% _' C( x7 v+ Bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 H9 X" `# c. n# n+ vlet note (item 2 trade-record-current )
4 U. V( J# a* Q# T/ S1 ^set trade-record-current& Q! s3 t2 r1 M% T; r) k) E% g
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ `  J! Q6 [0 O  O. @1 mset trade-record-current
$ q- G  q' c" m" m0 x, R% n7 P7 l7 ~(replace-item 3 trade-record-current note)' |, z/ ^& x: L/ x% R5 e7 {

' |: E2 {- V% v( ?) e5 N
# B- {& X4 p" _5 U& R8 S
ask customer [
; z" f0 b! K; S3 E$ Bupdate-local-reputation3 W' H; G$ Y/ R7 F3 b
set trade-record-current3 E6 j4 i- i6 N/ g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 P8 x& `- ]- @6 M+ _
]. A* O( x* l. d6 ]. S3 C2 v+ p6 y1 ?
7 O# E0 f. P" \6 z/ `

/ C  |; ^% v! @4 _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 T. \8 W% G6 ]: I: i# f/ Z
1 s0 x2 V) e: T: q; G  B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ S$ S! u9 q8 I: S4 l;;
将此次交易的记录加入到customertrade-record-all
8 w5 C! |. q, Y& j! Fend
- e3 k; p8 W9 A5 h( b6 e' m% B& W" n
to update-local-reputation2 N; b- ?8 N7 O, C
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ ?+ q0 C! c" l# d
5 P: }/ ^, N$ D/ |3 j
' F+ }( I. C$ p6 D* ?* {0 X;;if [trade-record-one-len] of myself > 3

( X9 v& E0 M, B' z6 Q) C  r) R6 L+ supdate-neighbor-total
9 M8 T; u. ~5 D6 |: t5 ~, };;
更新邻居节点的数目,在此进行
5 H' l  L9 d6 J8 [' O/ z& olet i 3
4 _4 T  G2 y  s- Flet sum-time 0
. T+ t; K( h  G" Zwhile[i < [trade-record-one-len] of myself]) C/ Y3 g/ n% w5 e/ B3 R
[
! ], r6 m( V/ _; q6 y, Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% B* Q  }5 |3 T, O
set i
0 w  ~/ |& _7 Z9 g1 a( i + 1)

: \8 G8 x/ t7 a: G5 ?* p]
4 P% e7 [/ F! E; Q! N. Q) Slet j 39 ?0 M) e: U3 g3 X4 _) D9 M
let sum-money 07 v8 ^% s/ n* k; i
while[j < [trade-record-one-len] of myself]* C; E- p/ e( ~; I- a
[  K) o& T# J. l
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)
6 H8 O2 }+ B  H6 M" I; xset j' G) m! I- I- `' c3 \  W
( j + 1)

3 Q- f4 u2 A' N]
$ a& l: `# d6 n5 t2 b: j7 k* Blet k 3) S! S7 A1 b1 R) z  p; c) t
let power 0; A. q6 {( M5 g" O7 q5 t
let local 0, g4 d  Z  R/ O' H& o3 g! T
while [k <[trade-record-one-len] of myself]
7 W. {: S% {/ i[& b8 B) m+ E$ t8 N7 C- Y& C' Q
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)
5 R0 Q7 g$ n0 e. W* S7 b/ j# }0 Qset k (k + 1)
+ j# `0 m- J( b7 U]
4 T; z+ r& z0 z7 Sset [local-reputation] of myself (local)3 r4 C. p( _+ J* z1 E* E
end
3 d) A3 ]# [# m
/ K* ]0 A4 {  T: z+ kto update-neighbor-total0 p% j- }4 ~' n, o8 W- H
2 [2 w: p, u7 f/ F/ n8 o, N
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 w  o/ Z+ m2 V, z% e
3 H. c9 M; M! o7 P

$ z5 E3 L8 T7 h+ [end
) e4 m7 v4 N# `7 z' K9 u& H+ |- {* F) H* v! g0 ]$ k, y# P
to update-credibility-ijl
5 Q& z% Q3 N! I2 ?+ e/ @1 t
+ I& Z* ^% }2 f2 F;;
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 M5 I. G* ~" }* Z% clet l 0
0 w  h: K, I! [5 e& Z9 wwhile[ l < people ]
3 S8 Q% w0 `" R: ~9 }# }  n' k+ U;;
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' b, g9 h( S* R$ E
[3 u/ O" R; @9 o4 M" U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 V) Y$ Y" B% J. Fif (trade-record-one-j-l-len > 3)
! g# w. X3 ]( o5 {[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! D6 C) u, {3 p( v0 E9 O! o  h
let i 3
4 H. |; x3 G7 C# p* c6 W3 Qlet sum-time 06 m3 r2 F4 A6 q$ f2 r
while[i < trade-record-one-len]
0 U" P' @0 O5 |5 Q( _/ S8 L[
) u8 o" V2 x$ t. h2 \2 L5 u7 Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! i' S% c7 E7 i# ]) z
set i& ?  F( v, v/ v
( i + 1)
9 b) P2 p* j# s. o
]
6 ]( T# _3 D- S# N6 m: g% F; ?+ slet credibility-i-j-l 07 M# I+ q% V. {. O! v+ v
;;i
评价(jjl的评价)* O5 _1 L( n' h
let j 3
2 b7 s; R4 z, Zlet k 4/ ^8 M; m5 e% _: T: i' x, x
while[j < trade-record-one-len]
1 p- Y0 z9 W5 T0 j$ R[
; I+ r3 k7 @$ t+ m' Ewhile [((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
; d% `* ?& I& ~' N3 l7 B1 v: Lset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
+ X; C% t4 B0 P* E' g! P: Uset j- J3 c) r8 M* O& i' H
( j + 1)
2 o! O8 G0 ?% T6 ~
]
  H; x) i/ c: [2 lset [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 ))
1 j9 A3 E' E8 @
' ^; }; ^6 ]* |# T& y* e

7 Y7 Z5 c3 c. slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  ]7 O3 w# }# O8 M0 j) K1 n/ H
;;
及时更新il的评价质量的评价
! j) w" h0 t8 [set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" b7 O6 A7 w1 Iset l (l + 1)+ Z2 h# V% R: a0 k" N' k7 ?( c
]
9 j4 H' j4 a* I" iend4 o2 R, `/ \' a5 l3 G

% k4 `0 t/ q2 w# c6 F& kto update-credibility-list) ]8 w0 n) V  Y1 }9 R) Z* x, x" O
let i 0$ |* a, I; ~, {
while[i < people]3 W0 E; Q5 p6 _7 {% Y' U5 S
[
+ ~: p5 l6 W& |let j 0
* G% O% t; i8 u! U7 K. `! \let note 0' b, f+ l! P- Y7 ^/ X6 [5 ^* Z0 X
let k 0
* k+ z' `4 A# X& `  \$ }! W- Y;;
计作出过评价的邻居节点的数目% P/ g/ k6 [+ ^, U
while[j < people]* V# J; ]5 b- e
[
8 g7 A7 `8 @$ \9 \, J7 Sif (item j( [credibility] of turtle (i + 1)) != -1)
4 v( h; |2 \' \0 I' i, d  s% [;;
判断是否给本turtle的评价质量做出过评价的节点
4 M4 }. j* b) r% e( N[set note (note + item j ([credibility]of turtle (i + 1)))
# J3 B, G6 Y# A4 A1 g3 {! r$ |/ k;;*(exp (-(people - 2)))/(people - 2))]
; H' k+ V$ V( N+ [4 L" H3 j+ U
set k (k + 1)
* x% K8 Y* A* X]7 n  D3 S2 v; M5 [( e/ R
set j (j + 1)
6 t" m) ^& d% ?8 p2 j+ X# w]' |9 W* o  q$ f4 m$ `( \# H  H; f
set note (note *(exp (- (1 / k)))/ k)
, T, M4 g& ^" c# Q/ r% s0 G, l  l" Hset credibility-list (replace-item i credibility-list note)
( p2 a: i/ |$ \( e; v: ~; C; }set i (i + 1)) {; h2 ]( a. B# E. ]
]
& W& b3 F! s: Q4 x$ Q" Iend& l+ I  F) U, ]; _, u  W9 @8 b" B
8 d* ]8 f7 i0 M5 k- l+ d
to update-global-reputation-list7 J! C0 P# [4 P3 S1 l! i$ I
let j 09 @9 Q. {2 N- G( D% b2 y
while[j < people]/ E2 i3 V* P: Z+ I
[- x7 v' U  n% g; \- D
let new 03 j' B) b6 Z' e% A/ O( r' J3 {. J
;;
暂存新的一个全局声誉
% h7 J* N  X3 r5 M7 |( Xlet i 0; ?( P& @. k3 ]* V3 e0 o# a
let sum-money 0& D4 h/ d  p- k! W5 g, x
let credibility-money 0
6 L  [/ Y3 P9 u" jwhile [i < people]) [$ k, R! v2 y  \- R3 O- U" W/ o
[
) w& b' [, O* _) ]- k% `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) v' x. c+ x% ?3 k  Y7 i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& z8 Z) ?! ]7 }; Z! L3 P( P
set i (i + 1)7 X9 E& w+ [+ ?& L! @  N# e
]
& V8 E1 F5 N. I7 [0 {let k 0
$ |& s+ X8 K. qlet new1 0. \  v! q/ u: f: q# T/ O
while [k < people]
6 Y  f& c, D/ c2 c[
+ ^, w0 J- ^& b& T3 Pset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money): }3 n4 S8 j4 @: U, s% ~
set k (k + 1). F) `6 Z  w$ U6 s' q
]
: J( ?2 _7 Z9 {2 f9 Iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! h! p7 L) j( v  q  e
set global-reputation-list (replace-item j global-reputation-list new)
5 ]& f, `, L; I4 U# Dset j (j + 1)
& |, l6 K) ^8 c! b]
9 E0 t& k! b+ L3 Cend
, A3 M) t6 r% o+ G2 y, B0 E! @% X3 c+ t7 c% [
! m: r) Z' h2 _

0 S. n- a% h( d; ^5 V5 R) z' \to get-color
3 s4 A! C6 U% J8 o
. l' Q$ x+ K3 r% M# b. }set color blue
7 a  Q0 J% S2 [- k1 H
end
' T/ }# b8 b; h7 v2 \# G# k1 e  j: s  E8 X, N7 Q$ p
to poll-class- d: n  Z1 b5 A* |+ x: T' ^& m' ^
end3 M6 l- R5 G4 [; ?

2 ?% D5 g, W' V2 e' K' oto setup-plot17 c6 X! @: ~# w+ o0 C8 k( D
; Y6 i" R( f3 Q$ ~- o: d
set-current-plot "Trends-of-Local-reputation"

- j  U' c; {. U" V- I$ F& ]* M7 y3 p2 G2 n$ q1 O# A; \6 H
set-plot-x-range 0 xmax

% u  V' X, ^- C. d3 I$ ~# |$ b5 b8 i( l
set-plot-y-range 0.0 ymax

& ]; X- I6 n( ^; O! W  a% B4 o  cend( s- p5 Q  z1 V& G$ T" ^
2 u1 J5 ^$ {3 n
to setup-plot2# L) |; R3 i7 ^4 P* \" r

. t* Y% v6 {, p( a' ?8 _% I( q$ Y7 ?set-current-plot "Trends-of-global-reputation"

( W  R$ o' ^9 |. `+ C9 z; B2 q) K; Y' G
set-plot-x-range 0 xmax

" P6 V7 K1 q; d$ W2 j* f( e$ h# v$ z3 c  S- p% ?% q% o! L
set-plot-y-range 0.0 ymax

" P" u( ~9 L% ]& y1 send8 x0 {+ D4 }5 X* D1 u& h* Y

% k6 s  W3 D! Y, e9 Bto setup-plot3
  @0 S, }# |# X8 g; B/ C: b4 H3 a3 F# j. h
set-current-plot "Trends-of-credibility"
7 `& f- m7 q& K/ t, K" R# k

- b8 Q- H6 o6 G7 d4 ?6 ]set-plot-x-range 0 xmax
0 O* M" x! _3 A1 f+ ~! t' d

; V/ c) J+ \& w% X: ~- h% wset-plot-y-range 0.0 ymax
6 ^# P6 M7 k% O
end; k$ r! [, O! ?" v; s2 y, c2 B
* j& y* t$ }! w
to do-plots/ O! [2 g1 `9 \, |$ u# h9 n
set-current-plot "Trends-of-Local-reputation"
; U: D' ]# Z; R4 q6 e' Lset-current-plot-pen "Honest service"
: M0 e% j6 e; e, V5 P% t. Hend
" T. G. A; z: {- o, z" {8 _8 C0 e
[ 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.( @7 p/ I/ i1 J8 X0 g# ~

7 ?" h; Q" O$ {* E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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