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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:$ f6 H0 J% O/ {! T# D- {
to do-business 9 U$ c9 ]4 A- Y
rt random 360
% j/ Q+ O! {$ d fd 1( |$ J  L# R* N( g7 Q, A; m; K
ifelse(other turtles-here != nobody)[4 ?- A. m) {! [  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.
8 ^/ e9 z! W' d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : G, [# Q) Q$ b7 F6 w1 q6 ?
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* C) j% T7 m9 R" t, A; ^, n8 k
   set [trade-record-one-len] of self length [trade-record-one] of self. B8 ^& \  b+ Z8 x0 b
   set trade-record-current( list (timer) (random money-upper-limit))
% u+ O) C( ~4 {, `8 z. t9 L
4 t6 f0 R3 C9 ?" F' f问题的提示如下:* b; w& U$ U% m  w
' W/ h! e7 _' p3 a
error while turtle 50 running OF in procedure DO-BUSINESS0 s: i' s  `% \3 Y9 c1 t6 B+ K& O
  called by procedure GO
1 P2 m7 @* _6 j* V( F( Z7 M5 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.% k- c6 p7 |  S/ `/ `- ^% n: Q  S
(halted running of go)
9 a9 S$ S5 F# u' n$ b" f, U$ A# A1 [
% [8 m5 W( K% _4 y7 ^9 D: w& z8 b这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~3 o5 M9 R0 s1 y
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教4 `8 b3 K/ W. q5 I) d: h; o7 Z
globals[$ T( K! a- L0 [4 Q8 P5 B+ ?
xmax3 d1 W+ ~$ h# O1 u
ymax$ v% s0 p( K7 ]2 y7 i
global-reputation-list
' }9 V5 _) _+ e3 M4 _; |
7 s$ F% x7 V2 m;;
每一个turtle的全局声誉都存在此LIST7 b% o, O, {8 z+ U
credibility-list
' D" }/ V0 O+ n1 N. S;;
每一个turtle的评价可信度
* \1 B" n! E0 j# `6 x: \honest-service
( ~! k  a9 s) O8 w  eunhonest-service. d8 R( `3 Y" N& s2 m& h7 s
oscillation- f2 u2 i0 ]6 X5 U$ U3 ^! E, k
rand-dynamic( |8 }8 G) H" T) S& ]
]8 M- T9 t" d( c, Y: z- D4 z
, ~1 ?1 r7 ^, h0 y( F( l
turtles-own[
9 e  s! h6 t5 X! Gtrade-record-all
) j' Q) y( b$ ^8 B+ b  C. z' G( d;;a list of lists,
trade-record-one组成
; {0 Z/ A: ]7 b4 _5 V2 Rtrade-record-one
. b- Z! s7 b( R1 d  R& 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0 W, L% l- @9 N2 x. Z1 N( [

" H: }) k3 {5 U5 [* l, t;;[
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 s5 a% n, }- O2 Strade-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]$ R5 ?9 Z% }( B) k  e4 h8 a2 ~2 `
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list6 i* d& r" Y& A* G
neighbor-total
, m: N, q0 H; L;;
记录该turtle的邻居节点的数目
% i  Y) |' M6 }$ V+ R- U6 |trade-time
  K; p  E) D7 |' _: O* p;;
当前发生交易的turtle的交易时间) j- v8 Q+ P5 y: \
appraise-give2 A6 s( }5 p7 d% n9 I7 ~, O8 g
;;
当前发生交易时给出的评价2 e& C. j+ p8 I$ n
appraise-receive/ I# x0 K! j6 Q. q% t8 T
;;
当前发生交易时收到的评价- V, U% o4 Z# f7 L: m9 D7 x
appraise-time
! W0 O+ C% {  ?, E;;
当前发生交易时的评价时间/ {9 P% }  N1 }) k7 z9 a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 t: L6 B% g, [& ~. E/ Jtrade-times-total
8 E& G+ s2 n7 N5 o+ ]4 t; p* v6 _;;
与当前turtle的交易总次数" E' |1 _. x( n! l- n/ m! ^
trade-money-total
. D0 H0 ~( J/ g, S* S;;
与当前turtle的交易总金额
' g& i* a, k8 {8 _# m3 s9 z5 l2 X+ ilocal-reputation
2 n6 Q2 v: h2 E6 zglobal-reputation; w- R* X* G" C
credibility
/ T7 L& _& {1 s% {  l;;
评价可信度,每次交易后都需要更新
& C3 K4 v0 m( j& T7 W+ o" ^9 @credibility-all
! R/ g; Q2 E/ ]4 |! ], N;;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7 s7 S9 a! I/ N+ n6 }
- P0 b3 o* ?8 x7 m( r8 o3 {
;;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
/ w1 r$ m0 G$ Z( ?5 R& h- Wcredibility-one" Y7 q( N# F! ?  Q, ^/ `  d+ @
;;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; P( X$ W' {# C. Y5 P: m
global-proportion8 l1 P) _0 S8 f4 ]# U- Z
customer
8 G/ G2 u) @$ p1 X: |customer-no! m3 }! b) Q! @7 p: l. ^
trust-ok5 S( Y$ U; T+ q* P5 Y" d' r
trade-record-one-len;;trade-record-one的长度
+ T, F( R2 }6 d! \! n( |9 F]% Y9 K1 d0 ?* V; [& T: r) r

# m) W: m3 o* J: m;;setup procedure
" T+ m$ n' K$ [- `/ }
' Q0 I0 |) f7 e) \6 pto setup
' _3 V9 v( N* [3 d: q: Z4 A: ]1 b3 _
1 _& \: ]6 y$ X% O  rca

+ r* y9 y2 ~; d7 {
- X2 {) d7 B' M% ]& b# x3 t5 Zinitialize-settings

7 k$ F0 v* y5 ^  x4 U! w; `, r3 S/ u& U: B4 ~% d
crt people [setup-turtles]
4 U1 v7 g+ O: A
$ {/ }$ B2 e) P2 o1 _& ^
reset-timer

3 n1 p" |  c/ d5 V2 q5 f( e
  p; R* Z$ m. Z9 D' _poll-class

/ v1 T/ J" ^: h
1 s9 G) u& D9 M0 asetup-plots
7 _+ _4 I: Q& ]0 J# c

  X& g1 }6 n( G* c; e1 R9 s4 `& i  wdo-plots
8 [4 ^* D/ b1 k' {2 i+ f
end
) I! n, e' s. J' k( `
4 j; P% a6 ^2 u. i, H2 U$ Uto initialize-settings
% ?5 \7 I; i( ?5 `6 J
/ a* s9 j2 ~% b2 \3 oset global-reputation-list []

6 O! h& r) D# i8 E7 @# H
" @& j/ y% A' l  [& |4 U- u3 }' |set credibility-list n-values people [0.5]
' O3 D  H+ ]$ s9 c6 k0 k  d- c/ R

+ g* \" [5 D1 ~% B! }( Mset honest-service 0

6 p2 l4 `( x" v, }+ C3 h! }5 v7 b& Q6 }- A! V
set unhonest-service 0
# F3 V3 ]: j& o) b3 S2 A

( W# g; k8 p" W' ~4 Z' `' dset oscillation 0

) L% X3 @; ~& ^$ j3 \) A
* a# B4 Q- |! m0 x' |+ {3 v5 Kset rand-dynamic 0
, U  k# A8 X3 A1 o
end" W; i# ?0 ~. W  E0 O2 f* E
" G. T/ U' G. v  z
to setup-turtles 9 o4 p6 O$ ^* l! ~* V; H
set shape "person", O5 z' u. d+ X$ G8 Z7 u& h
setxy random-xcor random-ycor/ U4 U% O3 b* S; n9 O# e
set trade-record-one []5 T. l7 r2 v/ H8 i5 c

3 u( K5 Y2 {5 F" L- `2 d, Rset trade-record-all n-values people [(list (? + 1) 0 0)]
1 K! l* N1 Z+ m0 x  k: R3 l/ E

- Z6 a8 x& s2 B9 Hset trade-record-current []
* v5 M5 |7 q* ?) K; L; a) @- Zset credibility-receive []
; C# X" Y+ i' k7 v- z1 v( [0 }7 gset local-reputation 0.5$ O/ q3 ^8 G) |, l+ L0 j
set neighbor-total 0+ [# m0 P. f- u9 c' |
set trade-times-total 0
0 m# W, \4 c& Aset trade-money-total 0
' w9 r3 c$ E: L  `set customer nobody
+ o$ z- c2 |  o8 M2 h- Vset credibility-all n-values people [creat-credibility]
  B; @+ V' w% F6 Q* }) {set credibility n-values people [-1]4 Q: D- O3 b: E1 `3 w
get-color; K' a1 H  r6 y. s# l4 V! X

. x% `7 r2 r( c* i" v1 {end
- ~$ N* @9 L, F' q# K$ Y% `; H! h
& v0 F! H* |  D. }to-report creat-credibility- R* u% s  ?/ D5 D+ i
report n-values people [0.5]
0 V" t1 W! I3 b  gend
7 a4 I7 X" N. H* w0 I6 T- N$ S* @2 o
to setup-plots
9 \- a2 |" O5 _- L$ k0 p4 s  R+ i7 D. u& \: k+ p% ~, ~
set xmax 30
! T+ `2 v+ X. |- E/ ^+ X+ o- q
" f  w, ?! p; Y
set ymax 1.0
8 {( I2 H/ }3 n" a* X* x" t6 d
6 m5 v  N* P% ?% L9 I
clear-all-plots
8 z9 r0 I6 U8 K
2 k, x& |' h% A  R6 L
setup-plot1
: s; g* r* x  R. Z9 H

/ ]* y( i5 J7 g: n# P+ D. Isetup-plot2
5 U6 h% V; `6 ]/ ?9 P

+ X3 R$ q  _1 i+ g9 Isetup-plot3
: z' p7 h5 e3 f- f
end
0 `' s- b: f6 ~0 O  f; I. Z8 |) O
;;run time procedures; O) ?1 F& ~& m7 o% X8 \( [7 \

! `6 f) L3 p- e! c; B. ito go* ]) _4 [! G3 d) @. P$ I

5 d, E) Z; ?4 P: S* x; bask turtles [do-business]
% s6 `* R1 Y& X. D8 v, Q
end3 M) U3 I3 \" p: A5 c" |
3 N  {, X* z; Z" S5 e* Y1 q
to do-business
  q5 R" F1 S/ e) A* V% w

1 z. x; |3 v1 _/ ^
3 u% R/ A' N/ h+ A; \; e$ j6 urt random 360

- K# G; q& O9 `0 D
; ^# }7 f* @8 r9 ~7 P- zfd 1
4 \. k9 j* E1 q6 q8 A* ?" t
# ?# ^. E9 F  r3 s4 ?$ \
ifelse(other turtles-here != nobody)[

3 O" E+ ]  j$ Z0 Z% z+ T. a' L) r& q" A6 i+ t* ^  N4 G
set customer one-of other turtles-here
# h9 w) a2 `2 x/ D+ O1 W

! r" p% H; {' F( c;; set [customer] of customer myself

7 Q8 s! t1 y& ]% z) u0 H5 a3 l7 E- k$ b- n0 W, p8 Z+ x9 F( X
set [trade-record-one] of self item (([who] of customer) - 1)
( t/ g2 |0 N  T/ Q( D[trade-record-all]of self4 o, L3 F( i" c' [0 l: G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 E6 Z' s' F! ]9 F& e* K! ^% I; j' R
; }, C: B8 G6 ~  W8 U1 Q) Dset [trade-record-one] of customer item (([who] of self) - 1)0 R1 r: {; u2 \$ b0 w
[trade-record-all]of customer
& q. {0 S( ~" |6 Q( i: _4 f
8 @; G9 j$ D( N1 k9 F" i" V
set [trade-record-one-len] of self length [trade-record-one] of self

; e% I2 w2 z' K0 Q7 u! B6 e9 t% E* M
set trade-record-current( list (timer) (random money-upper-limit))
+ d6 c" Y: V' X

: j4 {2 c! G# K' E; m+ `& y. b* Lask self [do-trust]
3 P; c! e5 D& m. E/ F;;
先求ij的信任度
' z& @- {. F; h0 J1 {( ]- N, G# R) L
if ([trust-ok] of self)
$ a0 _( y. j0 v+ T( ?, k;;
根据ij的信任度来决定是否与j进行交易[
9 F( G' n- z& o9 A" P8 {3 ?ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, q. S2 S9 ?/ ^
7 j( y7 t5 [0 k& g* B
[
8 ?: Y1 r/ u8 j* J5 k( z& J

9 m7 u4 X+ V% U& i9 H! r* ?& ddo-trade
, M- Y7 _0 z: @. i& D# m

* ]- D) a. ~5 }* ~) E0 vupdate-credibility-ijl

& N, U- k2 a% R& M' C; q1 a9 X, n
update-credibility-list; k6 K- Y% J/ Q! }3 r2 x) o
% ~$ c# Z( G  m. K6 K
8 o- r: R. ^1 ]$ u( f
update-global-reputation-list

; y  i% j+ D0 [8 p4 I/ F/ u+ C& G3 v/ I; M; h! ]
poll-class
' h+ g2 `( S3 m  f) n7 J

) _4 z. v2 }7 u9 p7 tget-color

3 m& N3 f2 q6 }& ~# b, c3 U: C: p9 z5 U$ S0 A; h/ T- l
]]5 G* b# I/ F7 T: k& n
7 n$ O& ?% j- L) E6 E6 I" N5 Q
;;
如果所得的信任度满足条件,则进行交易; w; r- S1 b; n6 O4 g, V: Z3 ~) y

& u+ H& t" b1 ^7 U[
+ g5 {' q# p7 A/ w+ y* _
4 _8 v& X$ f- E4 v' ~6 @
rt random 360

( M9 v, M6 O& ]7 @) w! I& _) _. p" ~
fd 1

7 b/ o% f, M, c) T
& h: }: J0 q  H; Y7 R]
& T8 ?2 d+ T5 o- H* W
# ^9 w) ~5 G: x6 w
end

  E' y9 l# b  O8 M
- t# y" E) K" cto do-trust
7 @5 R( |) i% l& L2 B7 Sset trust-ok False
+ `' }, O) R8 o) [0 D1 i6 g) b" X' B0 u7 K( F1 j$ Y. \

9 u5 D8 u* C/ \- u' d3 P5 llet max-trade-times 0
) ]. ?, M- c# }) y- {& e' Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 n1 ?, H8 m* O% b( ylet max-trade-money 0
- j" I6 I8 @- bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, \: L; B/ t9 c' nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( L0 l3 G- [3 {2 N; H% ?
7 O4 v4 v) h+ P0 n& Y8 H+ M
  J0 Y$ [5 m3 w8 S1 Z
get-global-proportion
/ y  ]* F: ~- Qlet trust-value
, \: P+ R2 n7 ~+ F8 W3 nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* Z0 I! O9 U0 L1 ^4 ^. [  a
if(trust-value > trade-trust-value)
* `" G6 A8 x9 D$ w" i& f[set trust-ok true]
: I/ y! r1 r3 \6 Iend
" c. t% O& V4 M. o3 {* c. D. v
; g6 }$ ]9 Q/ P2 P8 `9 R, y0 Eto get-global-proportion( h8 ?4 x! C; ]. d$ H9 ]9 ^
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' G6 `1 t% e4 T5 E' M; i% p[set global-proportion 0], t5 M- x: n/ h8 s4 e2 L8 p  P; A
[let i 0* h0 e0 G9 k, ~% t* Z3 m. o6 L
let sum-money 0) P5 g9 L1 t% F8 n7 h1 G0 K
while[ i < people]
  ]7 C, N( @! p9 \' d9 B[
* A9 o- |/ Y4 G- hif( length (item i
9 W* ^6 z3 |8 x+ l) U[trade-record-all] of customer) > 3 )
7 }% q7 J2 Z$ L! t
[; F) A) M. u- q2 P' C
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 q/ l2 I+ M8 r
]
1 c' {# A: ]( ~+ N8 y) {# Q" }]
9 T; S- h( ?0 c* r7 ^let j 0
9 v* O# W8 [% a9 S. p+ V. Mlet note 07 ~1 M$ J& P2 l
while[ j < people]5 z% C! T$ `3 k! p! p# B$ I! W
[/ p. X- Y0 Q3 k0 d/ T2 l+ z" a5 \
if( length (item i
: K: L2 S0 w4 i& Q0 n' i[trade-record-all] of customer) > 3 )

2 i( k& W8 ^4 Q& Y[/ \9 s. N+ ^2 |+ l7 j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ U4 o/ e; H. u; W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% h' \  E5 w1 r2 E( p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% a: m, _6 P7 M$ I1 [
]) M1 P: q  j$ [9 I" C3 T0 E
]9 L- Y+ C8 d5 b/ _* F' H5 E& w
set global-proportion note
- z* B- l" C& @& {( T4 j% g7 ?]
5 A: u) O7 V. w. }5 }9 y8 N! t% Iend
$ G: u+ ~# s# a  V3 c+ p- A; ]8 q8 h: U$ o# n, z' B
to do-trade
# L! Q5 T: e; p& O0 g1 i7 E' p;;
这个过程实际上是给双方作出评价的过程" `4 i& p8 {; d# e1 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% h6 ?4 A# q: @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) D. D+ p/ T* H1 q& }5 ]4 D( sset trade-record-current lput(timer) trade-record-current, g/ |; _- T' y- e0 J' H1 y) \# l/ I
;;
评价时间
/ Q! U6 N1 r3 R1 K; y1 O' p4 W' Oask myself [
" L" w' h$ P+ A" j/ vupdate-local-reputation% z2 H- B8 M2 \7 g1 J
set trade-record-current lput([local-reputation] of myself) trade-record-current
. _) |0 E9 f; A]
! j4 h) {; l$ e0 k8 W! Z/ Z# t! xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' d+ |. Q6 v* X;;
将此次交易的记录加入到trade-record-one
! ?) W0 h; O: |* }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 f: \0 q1 f* ^4 y4 c7 a
let note (item 2 trade-record-current )
! f, f& G& i: e! B& g+ Tset trade-record-current6 K% |+ l3 E' `! g+ Z, [7 H) I
(replace-item 2 trade-record-current (item 3 trade-record-current))
; O9 L2 h' f1 z3 ?
set trade-record-current
3 q' ~3 ]+ k4 O2 S1 W: p(replace-item 3 trade-record-current note): q! R; s# X4 D

8 D6 H) l5 u' T6 [9 L: J# X

% N, ?0 X9 H# aask customer [
+ H( ^8 E0 U0 ^5 n; aupdate-local-reputation' n: c" T2 ^/ k" k9 C
set trade-record-current( o# h8 I3 v1 x- r1 ^/ X- }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' P& j& v0 c  I$ u4 x' R7 s
]
" O0 r6 l4 S) q
+ `  c8 K" U' g

( P3 ]6 B: N' k5 ~0 Z; nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, J- r* ]. d. ]( y/ ^6 [

1 I, D5 T0 q2 T/ a3 }( Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 h) @' j7 t7 P; J2 I3 [; }) };;
将此次交易的记录加入到customertrade-record-all6 s7 S2 t5 w/ O4 R8 Z. x0 r& E
end0 t8 r) A3 C" c- U' z; q% d  c! q
4 h+ j% ~9 y! f* U, t9 @
to update-local-reputation8 s6 s9 n: K6 _- o+ N& b7 ]! i
set [trade-record-one-len] of myself length [trade-record-one] of myself$ e; J  `" }# k& O7 k2 r8 d9 ]
# L% @$ M( s8 s) L: f% a

' C: J9 ~4 @' w7 b, \! B;;if [trade-record-one-len] of myself > 3

; E  z0 S9 _$ Q) c/ J+ e- hupdate-neighbor-total
+ D! G- R% t. O5 O. M# w& j;;
更新邻居节点的数目,在此进行
/ x9 X! o+ k, Q+ ?8 Z# U" blet i 33 @" Y2 m0 c+ x; L% g% k8 ~/ X
let sum-time 03 Z( V5 n4 _3 c( k4 k
while[i < [trade-record-one-len] of myself]
6 G$ a8 W0 r8 S6 `0 t# ~[2 ^, Z- {: C6 J) h6 ]5 N6 T6 V7 a% F0 f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ F5 Y0 O) H" Sset i
% G5 ?% R4 ]% A- p9 h- x1 x; j( i + 1)

- Y: E8 u0 d! d2 b! ^6 X( ]  t]
6 T6 O- G& A+ T. P( L+ Plet j 3
* R+ l( d' k8 @1 flet sum-money 0+ ~- k# M- @& b/ D9 v" d
while[j < [trade-record-one-len] of myself]
# L* c1 q2 E! V  r$ z[. k( ]6 d) b& R) M( M2 J* U9 R
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)
, w. V/ Z( @& _+ a4 X+ x2 p7 a) K" }7 vset j( o, g( ]4 r, o/ W
( j + 1)
+ T) H% m) F' t9 d; E3 a  H/ K  p
]
4 z- Q- t! L- J' {; R2 dlet k 3
* B0 T  H- z& K3 S* W8 Z5 mlet power 0
3 Z6 N; m. L' w4 z" q1 _let local 0
3 a6 w" _4 k9 X" Lwhile [k <[trade-record-one-len] of myself]
1 R+ S: L. f4 _" |; A1 s& y[0 ~* v3 X9 Q& H) K, I& f: [
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)
' i; X4 J7 ]& r5 M  X( g7 vset k (k + 1)2 N7 |" _6 h4 q5 E( v0 ~2 j. `/ m
]
" n* @. n7 l9 N) {4 Y+ fset [local-reputation] of myself (local)3 q- o  z+ @* _. _6 O8 C
end" X! Y+ c, P7 J( n, i. t' H( S0 ~

5 k0 T* q- [5 C% eto update-neighbor-total
9 c" f% J' k0 Q  X6 B& s
( K/ m& `' u1 }5 k( H. Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 G# \2 L% T- K; m
2 c8 i, {2 ~& f: o- r; t
% e' N) }0 B  i0 Y* H8 [& F
end# n" t$ k  V! x+ @+ {

3 f" e. c/ A5 B9 }# e1 _to update-credibility-ijl
8 j/ b, ~1 i$ E# Z& R0 u* u8 ~5 L7 T( E9 P9 w2 h% p
;;
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。, O( c& b( S3 `6 o( z- c, c: s
let l 0
- n& `$ k5 }3 s% X% e. Q0 F7 K+ mwhile[ l < people ]- _' w. N6 P; T# u& H
;;
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
, P- t4 B  U$ ]/ `, ^[
) {, g: E+ J8 P0 Llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 k! C/ q! i* `2 Z
if (trade-record-one-j-l-len > 3)& H- t! n7 ?1 b5 L! W
[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
$ Q1 r/ a- o! x$ \let i 3
' t& V- H. ]5 Slet sum-time 0
4 J+ V- i* N/ h! E3 Gwhile[i < trade-record-one-len]2 {: _- V9 L) f
[
, q- \5 ~% s4 r8 @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 x& ], p0 e. }( l2 ~5 b
set i. x* Q3 [7 }" w
( i + 1)
2 A" }- g7 f) L9 l, {# q
]( P3 w4 c$ C+ I$ F8 Y4 D
let credibility-i-j-l 0
6 ~9 [) F9 e. I! U;;i
评价(jjl的评价)
' _) ^8 Y9 N( z# v# Y5 p/ j: m; \let j 3
7 i, c* P7 N7 N! `( L1 D' N8 glet k 4. N' `( z( |  a+ ~% w& r' e. n' c
while[j < trade-record-one-len]5 P: D! u' U8 _& x7 W/ l. w, [
[+ B& _' ]) R# U$ F# A( ?
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
/ H0 u& ^6 s9 |2 \5 ~& ^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)
  N3 q. y7 [4 F& Lset j
- `. y  J5 d) V% \( j + 1)

* t- {1 S+ g" ^]1 F% h1 Z. ?1 I0 F5 @9 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 ))$ ?. Y- E- E2 {/ u$ R, A
& B5 ?% l' A0 M1 ]

* B1 g, n5 C/ x# z/ O& ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% r  L5 t5 x5 ?+ F( f6 s
;;
及时更新il的评价质量的评价
) k4 q; y% J- t# D4 B' ]" ?set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ {) z3 s, n4 w+ aset l (l + 1)
0 Y7 f' X, p% j3 `8 M5 o7 w$ Y]- s, U. ]- C) q! Y
end# B4 N5 u7 Z0 ?: Q
$ `' O3 E5 _9 |" B
to update-credibility-list' D' J9 g* y- S, ?. u  ~# l. y+ F
let i 0  |) E9 |: Q3 S8 T  K
while[i < people]. F; g9 q2 q% f! s( H
[
( S% C6 C0 _; T3 r( o: Y0 g+ E" P) tlet j 0" V  d; e: Z4 X! E, l; L
let note 0
$ ?3 Y2 b" w3 }% ~let k 0
) q2 l' R" @% G$ y;;
计作出过评价的邻居节点的数目
0 |0 y  I$ l- V) i: X9 jwhile[j < people]
0 W4 h. p; K" L2 D. P' s[( x; p. Q$ x; ?
if (item j( [credibility] of turtle (i + 1)) != -1)9 Y1 ^/ f/ k/ F. [$ @- \+ N# q: W
;;
判断是否给本turtle的评价质量做出过评价的节点! _. X" R% h. s" Z5 d  n& z
[set note (note + item j ([credibility]of turtle (i + 1)))
& t+ y$ c8 t; N; K( `;;*(exp (-(people - 2)))/(people - 2))]
; d% {# X  W6 Q8 N9 d; _, l  Y
set k (k + 1)
4 u0 t" k2 |9 Q- \]
, w4 i* H2 {4 |7 D; zset j (j + 1)
4 E2 j1 _2 H' }' p& p" s+ a% e]0 `& d( m8 [, a5 ]* _
set note (note *(exp (- (1 / k)))/ k)
" u" N0 ?6 K9 b6 Z* p' {. {set credibility-list (replace-item i credibility-list note)4 X; A/ Q! l* Q/ Z
set i (i + 1)2 n& b9 K6 g, b8 U( G' I) o! Y
]
& }6 C( y" i6 l2 |end
6 D% M6 S$ p8 H* ~& r  T7 n" _- b0 R
to update-global-reputation-list% |" }8 E$ j$ p* H0 O9 @
let j 0' D8 y: l7 h; l% u- j+ n7 t
while[j < people]
& S  G$ H- n% S) g0 o[
; v- x7 V6 k5 `0 J* Hlet new 0( Y2 s6 H/ E% T) R" c& K# U/ l
;;
暂存新的一个全局声誉
; }4 ^9 X: Z! n( I: elet i 0* s' @4 V( K/ o* m3 C; ^
let sum-money 0
" Z6 S* |7 y2 e1 A$ T, }let credibility-money 0
' z  H4 c5 g/ g% m1 H# Qwhile [i < people]
# v  d! O8 L" }7 D  A! ~[
$ u/ p0 @1 `) t5 l+ ]set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 B, W" f/ z5 b. S/ ]" L( y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( G2 @: p# y8 I; Y3 q+ s3 ]set i (i + 1)
3 _( y0 z& }5 _( O* p2 J]
: J# F2 t" i. g- _3 Q& u  blet k 09 g& e/ F; y- `, p5 P. [! W
let new1 0
9 P/ c6 q1 X$ C9 p- kwhile [k < people]
; Z9 u8 N9 g" j[) r, R3 G# Y; f, I, M" l
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)
1 H' |$ j& `# Xset k (k + 1), L& o* o) A# B$ ^4 o
]
% j" e$ Y, P+ N1 X& `) fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ |% r3 k2 \5 t& ]$ V) l/ h3 P& _
set global-reputation-list (replace-item j global-reputation-list new), Q" T) ?& V* P2 ?
set j (j + 1)3 {4 a# _5 Y. }, N7 P
]
3 }( n: L+ k& L! n% @end
6 a, o& o$ F! R$ y% |5 M6 t
; ?- ~6 K6 l2 N( R5 C
& r  v# Y* `7 ]$ h# T% M
( m) q; H  a) P' w, |1 Dto get-color
* S. U% ]* x: Z9 C) d- s( a) c; H5 U; S  L
set color blue
9 h1 g. Z- A- R/ Z
end
* D7 @) O4 _  Y& V
* h0 }0 k# b7 c3 }* p7 Ato poll-class
( m# w: k  O7 S! P' b: r. V7 gend% p' R1 H' a8 P' k, h6 Z0 D. q
; c; y0 k& |3 R. P8 m* e" a0 m7 z
to setup-plot1' Q9 q. U+ {% l' x+ t7 U. S
; y6 y5 u) j3 U
set-current-plot "Trends-of-Local-reputation"
9 g$ o2 }6 T- `
6 e$ i: O$ I0 ^, @' w, I' k  O  G
set-plot-x-range 0 xmax
* W$ Q- ]' e  N/ x

1 ]* o* N  Q' u( t% k% sset-plot-y-range 0.0 ymax
9 T- G0 g5 B" c) |
end1 E4 t% B: m8 s7 [2 ?% o

3 j) w8 Y1 G) S8 l! \to setup-plot2+ }: b; E4 F# u' m
1 u; C, |! Z& n
set-current-plot "Trends-of-global-reputation"

/ N8 M8 X  J" u- `3 I: c1 z# W9 x( f: O$ M
set-plot-x-range 0 xmax
. d7 v4 t* t+ q, D2 S2 \8 X
, L& ]  v* w7 [
set-plot-y-range 0.0 ymax
4 @8 j. A1 C: I0 K) H
end7 z! H+ b; a5 n; k7 d

! H1 x  m1 r! }2 s  O( b- W( sto setup-plot34 W# \; P8 K4 c/ C" ~
5 v- ~. r( j. M5 U/ q, p1 Y1 x& E
set-current-plot "Trends-of-credibility"
: u0 H8 M+ P& L# F( s: w0 y. v

) a6 v4 @; f0 _) D% xset-plot-x-range 0 xmax
) T8 X6 z0 J$ s) B% ?
/ T  |3 ~9 B7 f! o: h7 c1 X* D
set-plot-y-range 0.0 ymax
5 ?" z, ^. I9 B' W: q: {
end( z9 H. Y  q/ _" {

7 O6 \: }( S6 c' K% ato do-plots3 s+ s% ]- h7 M6 c. h1 U( B0 Y
set-current-plot "Trends-of-Local-reputation"1 ?2 X( v. M* k; |4 v+ O
set-current-plot-pen "Honest service"
9 s4 @3 |9 p9 m" d+ M. S0 ~# `& A$ _end
! W2 \3 ~* W; c$ h$ q  M6 w' {9 j( x. Z1 O  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.
; a" c0 [; ^( I6 I! i' N8 L! P- o# x% R: B
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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