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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:3 u# B  \5 i& k3 I1 [
to do-business . ?8 P0 |+ w2 f! z1 e" t& B1 D! d8 m& @' l
rt random 360
; l  r$ d) D2 i) ^9 `& _ fd 1
$ t5 V$ @. d5 `. \ ifelse(other turtles-here != nobody)[! @6 a1 G( S- e5 R4 v$ H9 r# n
   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 j$ x( h( h: O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ x$ N5 e# B8 ~' W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* e' q, x% S9 D- z4 Z* X( c   set [trade-record-one-len] of self length [trade-record-one] of self
- @# N& G, k9 e/ @: X   set trade-record-current( list (timer) (random money-upper-limit))
8 j% A% o5 l+ K: b7 p$ ]2 v/ a% j8 l0 g7 b+ l% |/ k4 f
问题的提示如下:
  K5 a8 s! T  j' e' Q# P# m- [+ p8 l) x" Q9 ]& {9 `, p( R
error while turtle 50 running OF in procedure DO-BUSINESS: @' F5 _7 I- [) \& G: i
  called by procedure GO# i0 s+ b4 S/ E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; g" x1 @( ?7 C9 u
(halted running of go)5 z' T$ Y7 R- ~+ g% q
6 S* c+ \( j) b8 t7 a! K5 g
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~~: Q9 w8 B/ n+ b9 V
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2 O; S( P7 i: d7 S  H3 S3 n
globals[  r' P, I) c1 U5 Y
xmax
+ ?( \/ G. C. J- q3 w# h& f' _% ]ymax
7 e. J+ Z9 P3 u4 xglobal-reputation-list1 j  u% X4 x5 A7 }6 M. a

; o1 ^9 s) @# S, U  c1 j;;
每一个turtle的全局声誉都存在此LIST
7 g. Z0 @$ ]+ n7 i+ B$ }9 ]9 ]credibility-list
# y3 M* S" E7 f+ b;;
每一个turtle的评价可信度
( v0 d; H: D1 o5 F6 }( u) nhonest-service
8 D/ ~/ H: M6 p# a* u, uunhonest-service
# V1 o! v/ v* l  Voscillation, ?) W) p% J; d
rand-dynamic+ w' O' h7 Q! W+ w, q2 i: Y
]2 I& N+ b9 k& ?7 r# t" ~, }1 @' F
3 i+ }( N( _' x9 r2 ~) L8 e" z
turtles-own[
+ o7 ?" H8 ?0 l) x" t: J! gtrade-record-all
  B8 G, A) ]7 g' O' D: ~4 f+ F;;a list of lists,
trade-record-one组成% X1 O+ u; t  `  t5 [9 K) t
trade-record-one
8 r5 z# W) d- _. _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* D& g) k0 u9 }: f
" S6 ^% c6 f1 H% v7 g" e
;;[
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]]0 {* H% H# ?/ Z  p# A: }
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]
0 d& f1 J8 t8 J5 Z' D: H! Lcredibility-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
4 j2 h) H; F# j1 Eneighbor-total
  x/ y/ T3 K" I+ s;;
记录该turtle的邻居节点的数目
, C4 `4 p. `# A# \1 Itrade-time
) x2 C. W: |' i- ^& z( l0 h;;
当前发生交易的turtle的交易时间
, T4 e8 G- I- wappraise-give" R) N6 C7 K1 H/ @( m% ~
;;
当前发生交易时给出的评价1 l5 P- ~6 s" w' T* M: |
appraise-receive
7 b' s2 Q) w4 y* b( Z8 u$ S5 C; P* i;;
当前发生交易时收到的评价
* R2 h4 L4 i4 Bappraise-time
/ D- G8 V4 a  _' I9 |  G$ A;;
当前发生交易时的评价时间/ z0 j! {: m3 M0 L$ R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) A( c2 i. y8 Gtrade-times-total- s; S+ g" p+ Q( k
;;
与当前turtle的交易总次数# s  d' Z* j- U& Q9 [6 V0 |
trade-money-total) G; L' P1 D) r. ~: N
;;
与当前turtle的交易总金额# u& u) v$ }9 {" p
local-reputation
5 C8 r4 a  q0 V5 x8 g9 T  K& sglobal-reputation
8 j7 h: P+ W& d% H% T4 {( M. lcredibility
% ]+ Q! N( m. D6 M0 m3 N$ f;;
评价可信度,每次交易后都需要更新- R  K* h; Y: w$ Q4 {) c
credibility-all! M( k- @% D1 ^3 x* 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/ P* [2 _+ B( Y

- s% C& j  ]) p' [% K# q! z;;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 K, L) p8 m9 b  {$ ^) h# J) Mcredibility-one/ ~6 B4 K' C% o" I5 N2 V9 c
;;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
) E" P) b+ J+ Q$ }global-proportion
# N% ^8 X% t9 y/ ~8 `5 |1 hcustomer) g6 ?* f! `! P& K% F
customer-no4 t) }' U$ u% ?. D* d* Q- r5 r7 |
trust-ok: ]; |. j/ ~" u4 c# }* g
trade-record-one-len;;trade-record-one的长度( j  b9 Z( n* y4 Y7 M5 t
]
$ c2 w! _; K+ R( p! H5 b# E' ]
;;setup procedure5 s" m5 `! Q; T
7 u( T" p. y* W5 S
to setup
+ t# Q" T  h* V. f, T
7 B5 T3 z0 |+ s7 _8 u: Rca
% B3 M" n& ]' W* O) O+ w4 F$ w
7 Q$ X2 R8 p4 W, S
initialize-settings

& e+ D; z  x5 @1 r. b
2 i9 w" O0 F6 f& }/ I/ kcrt people [setup-turtles]
  q. s1 q9 K" D/ |7 b2 z
# C3 u5 q  h. P/ |7 @. K
reset-timer
! d3 L9 E# E( E, L( V9 j. f
0 v( S, _2 r& k5 ]2 r1 {
poll-class
4 o& L- b4 E: h* b3 W+ E
; H% J! X. _  W! G9 Y* F4 a# ~5 v
setup-plots
9 D- u+ O3 D  _8 P) v
3 g/ U1 s. j4 a" T: k
do-plots
! S( S( I& s7 a( L
end/ R5 u: q: m0 t2 G" @7 C
5 ^; |( q# P  g- a4 F$ W: ]  d
to initialize-settings& H1 n7 ?; B% s
! x: D* _0 G0 x) Z
set global-reputation-list []
( P; ^0 z& l9 c* i' W/ e# X

, `/ p0 B8 g9 f- a! A+ x- p( \set credibility-list n-values people [0.5]

: D7 ?2 Q+ a( R4 `
) q' q  W6 ~' r7 ]0 yset honest-service 0
6 O- v6 x0 ]( d" X0 J! Z' L

, V+ z9 s2 C) ]6 mset unhonest-service 0

& w: b6 }) i* ], Y8 B2 \
/ P) u& V! V3 T( ~3 Pset oscillation 0

& R0 i/ _. n8 _- \0 t' s7 M, N" Z, v6 ~: o
set rand-dynamic 0

, D4 c7 }9 c6 jend6 w1 l, o+ q1 D7 {' |  `9 V

6 h& ]8 [" F: O8 nto setup-turtles
3 K- P& t7 J  V# j5 e2 Eset shape "person"
( o" V7 h  J7 ?: L* l* V# N0 Lsetxy random-xcor random-ycor
/ x. F. m* n+ cset trade-record-one []
9 z0 n, ^! [. m& P5 y3 K# J- {. ]. z
; W  Y+ ^3 C- i/ [) W, T% c
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 f5 i4 g" D6 N+ v* k% Z5 @& }

. |; ~% R1 q0 M) N( C2 H0 i( `set trade-record-current []
. V) X7 h% Q9 I8 u% D6 qset credibility-receive []
1 |* F4 s( h+ Q' Jset local-reputation 0.5
4 O) l& F4 e! u0 Zset neighbor-total 0& a1 U8 `9 G# T. R0 o3 k
set trade-times-total 0" x1 h* }* k- I# @2 o
set trade-money-total 0  H6 h0 o! n( s) x  v) H; T
set customer nobody) L, e9 {% q" j1 B
set credibility-all n-values people [creat-credibility]1 Q3 d, [! a! o& b
set credibility n-values people [-1]' r4 L* x) {$ k+ P! ~  Q
get-color
1 \8 l1 Q: v2 ]) o7 `& l

+ E6 ?) h4 w+ t) R2 y0 _$ Lend
: O8 X- ]& c% m$ J* |9 w( Z8 Q3 ]) F) o9 B: }  |7 }# f
to-report creat-credibility/ _) r$ P' ^. v( [8 F/ Z% p
report n-values people [0.5]& {0 z, V; [, x! `7 K) u3 V1 F! S
end$ o% F% Y4 e! d
0 Z7 Q3 f8 p& g  h+ i' u
to setup-plots
$ G1 }& |# E* b7 p/ s. c' K3 I  ?/ C: Z0 m5 z' i
set xmax 30
1 g" i- ~. ^& L1 X9 M% N

$ x9 S( h- y. Y* Q2 i% m* cset ymax 1.0
  ]' x; x6 x  h4 }, T

& n1 o6 T7 a1 T4 H* Kclear-all-plots

$ N/ p- A. y. s7 u  i0 C6 l" p8 l) W& m; g
setup-plot1
1 [4 q2 q  w; ?+ F

4 K3 L( O/ F- P# ]setup-plot2
+ F* n) N7 R8 r+ k+ [  a
. f5 v0 P) @" q, m
setup-plot3
+ W3 g0 r& o& N" r( p2 _" `: r+ m
end
; C% H7 i5 j5 B: i6 Y- ]
8 o6 i! n& t: _7 K: O;;run time procedures$ Q( G- C1 \5 c5 w* v8 T+ o. V
9 w8 N3 ~6 P& ?+ M0 Y
to go
8 Y9 N+ E2 ~* C; z! h) s7 {8 m7 x, X
# n2 J5 V% A! p/ ]ask turtles [do-business]
) B& }% b0 V, W
end
0 t# O* n7 z# T" x! [# e$ M* [+ @. t7 W! s3 R8 q
to do-business
$ |0 W3 A. @8 P" `+ p

8 E, U) V' r. w: }
, i+ w( R+ J: i$ ]rt random 360

9 D; v! Q+ @' j
+ p6 S& B; J, yfd 1
/ \  F3 H. F$ W( t

8 N( R1 I0 d, K: A) }* aifelse(other turtles-here != nobody)[
4 r! _/ j6 B" B8 l1 P6 [! E

" A; L! K2 C) X1 Nset customer one-of other turtles-here
4 y6 X& z* `5 U6 ^: X
6 y. u$ ^3 {0 \- }- G, P7 C& _
;; set [customer] of customer myself

3 C! W! w% T1 P" D  m' d
7 v7 `. F% u$ t- j% t' ^" Eset [trade-record-one] of self item (([who] of customer) - 1)& p# s7 [7 S: C+ i2 e* t" @% k! @
[trade-record-all]of self
9 W3 Y, y; B$ I+ e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- K0 ]% l% P4 I

' k8 V* {( S/ o& bset [trade-record-one] of customer item (([who] of self) - 1)9 m1 _3 ]* e( Q  H7 A; H/ S+ ^
[trade-record-all]of customer
" _/ ~$ A2 D) }, u- G1 Y

) I$ h3 N3 c; _4 Aset [trade-record-one-len] of self length [trade-record-one] of self
, H4 O  c# G& \5 }5 a  R

9 b$ v$ _9 h9 L/ }! nset trade-record-current( list (timer) (random money-upper-limit))
% C+ @  r# d( {* n2 N# K8 G8 N* Y
* R% U# a; Y& u7 w# t; o. e8 N6 Z
ask self [do-trust]
  v3 T0 G: V# a2 B' ];;
先求ij的信任度  ]- ^: c  A  x- n3 \, E  k
4 i) P: X; @3 }7 u1 {
if ([trust-ok] of self), Y. b) y  _8 f# Y0 w( b; Q- h! j  q
;;
根据ij的信任度来决定是否与j进行交易[
( E- j! a# Z  `; gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 `2 g' \' ?2 b9 Q: C
0 @( {% q8 U5 Z; g2 K7 P[

1 W4 K+ T+ i2 n& z: u4 P+ [. K3 G3 x& V
do-trade
4 m2 v5 f+ m3 V, a+ k6 T" q
- }6 `1 m% W4 T! H4 ~( L
update-credibility-ijl
1 z1 Y/ m/ d/ D9 D: L, X

  a! z4 ~5 f' q( ]; x) Uupdate-credibility-list" C7 O" m" q8 @8 L2 b

6 E, f  i4 R/ t2 [  x0 S3 P) B) z# d1 d# x+ d) U7 Q9 ?
update-global-reputation-list
8 y# E# Z; n6 |8 T

/ h' }4 w) Y9 A! Epoll-class
3 x; ?, a* s! t  s8 d8 f8 |

1 {1 E( t% ]  Z% K, S% n  `get-color

3 Q5 V: e0 t& O! Z1 J
$ F/ L7 }5 X" @, M0 M* Q+ L( C]]6 q7 A* Y3 o+ ^& t% Z; R4 |
5 V% h2 E) j7 O0 L, B9 `8 E
;;
如果所得的信任度满足条件,则进行交易
; u" b  N+ H, W" a
8 @2 s: z. A1 M; m3 F( [[

  B0 t9 R& L3 P3 X, R9 E, r( T+ x0 s7 o8 G, x
rt random 360

' D4 z/ @2 [0 s
  C* h0 p7 V+ b$ g* m- g2 E/ }fd 1
1 v: R1 a( S9 w

6 C) _" L8 [- f- ?. v( P]
4 t( ~! t/ Z4 u) M! |

% S9 W5 }/ h; U/ D- B( G2 Gend

$ z( d7 h0 ]/ L" a/ h$ Q+ x3 c$ Q9 B, _
to do-trust
4 F9 j) f9 Z2 g9 ?. H, z2 Yset trust-ok False
$ F) v+ i) S, q: C+ A9 C# U/ a0 m0 \& J1 I! w' |% y/ Z, r

) r) P! g: g% N/ V9 T. K" j' V! C* olet max-trade-times 0
2 O/ a4 A* ?. W5 {foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 r) n  N. _4 {# W+ f& glet max-trade-money 0$ ?5 u4 d+ ?# d
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 R7 T* J' @9 `, J* ^  s) u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# ~8 I; e# X; j+ K( E
/ q. U3 s7 G" k
: X" a* u4 u3 Q3 r- T7 \/ K
get-global-proportion  e9 M8 J" S7 v# m) e7 q* g
let trust-value
5 V0 z5 g" |, ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

/ v' U0 }3 f: [' u) T0 }" @- |% Zif(trust-value > trade-trust-value)
; s% A' y6 c+ J$ Y  e[set trust-ok true]. x! U% r' |9 n* N7 S9 f% P
end
7 w& ]% Y1 O; Z, p) N- Z# |$ ~$ I0 K; F; Q  B, D0 p9 p% j
to get-global-proportion
3 S8 R5 C& e) i/ ^' ]5 }1 iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 @8 s+ [8 M  t+ o! K/ [& I# f7 H  S) M[set global-proportion 0]
0 f" [, S: _4 O* j# Z[let i 0
% j! k1 x2 Y' jlet sum-money 0
8 p) n  G7 R9 Z, y4 T! Dwhile[ i < people]# Z; t3 s: L& }: V  E7 _7 s
[2 K4 ^* C2 C" M/ Q4 \2 S( I: q
if( length (item i
$ ?, m4 P* d, R% d+ j8 u( N+ e' k[trade-record-all] of customer) > 3 )
3 p! c+ R( e& N' C0 K3 n6 j& M
[
- B' c  e2 D# h7 `" [/ g- y# Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) r  ?0 |! T+ ]# G; X6 `1 `
]" X$ U" B4 X) K; a; [
]4 S& E2 O6 J( s+ ^5 ?
let j 04 `" N7 k5 i2 a" V
let note 0& y8 _$ h9 z; E. g
while[ j < people]* X/ S4 D# ~5 D8 _# \
[
. P( A' M4 r6 T6 _1 I3 mif( length (item i
  y! e) I# k" B/ G/ }/ C: l6 n$ A[trade-record-all] of customer) > 3 )

" ?% K- q$ n! C: D3 A[
" L" f% A$ L) x6 Z5 H1 pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 P0 D: [  C% c6 B# Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 I/ v+ A" K. f- L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# W0 q6 D, {. ^3 t! y3 b, V
]
7 L0 {& P( Z. T4 K" |]
" ?4 q+ O9 X0 _0 h, b* Kset global-proportion note
  e% _- j0 Z7 t3 x5 ~]
' c/ c; V) u$ t. U# y) send
. R; U3 X# }/ u, _' ?# w
! Z7 G/ M8 m# N8 Lto do-trade4 Z4 ~5 }# @  d+ N9 c
;;
这个过程实际上是给双方作出评价的过程
- C& `% D1 ^# F2 H, x6 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 r/ |5 W! E- _8 A# m7 ~3 B5 N( u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ Y1 T( X/ O% F- {. b, Z
set trade-record-current lput(timer) trade-record-current1 {# _) M5 {9 |
;;
评价时间" L* K' V" `$ H0 `& X3 l7 j4 C0 \$ F
ask myself [
$ [- P+ f; l, b$ D1 E' Rupdate-local-reputation1 w) z  P/ v. p5 S6 j
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 V) z0 k  P9 v* n]
# A) f( [5 L5 Z: [# tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 F5 M. o0 C& R0 A- l* U9 c;;
将此次交易的记录加入到trade-record-one+ b8 Y  f' X4 X& z7 V
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 y$ m7 G$ @4 Z( ?7 B$ qlet note (item 2 trade-record-current )
2 i" z4 l) v+ W# w8 Gset trade-record-current
2 A. S  @1 |$ e, Y(replace-item 2 trade-record-current (item 3 trade-record-current))
0 r3 N- z: e8 c/ ~3 M
set trade-record-current7 z3 Y  M- Z  z& Q
(replace-item 3 trade-record-current note)
8 N. o% t" F2 }9 F" o, o+ ^4 _/ s  Y/ K4 F6 U

7 ~3 ~8 I" Q4 S4 ]- u) @4 Iask customer [3 f( L3 g# G1 L" A
update-local-reputation' _8 Y0 o* F/ K3 I
set trade-record-current
6 K/ a& G& g$ I(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; Z) K: G& B$ n: b6 C]9 A0 Z5 g# j" p8 J% i) K1 x

# v3 v8 @7 W3 b, {$ ]
; [& r) R. E. k2 q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% V9 e: W2 G0 T

* L4 u0 A1 w  e; ~1 Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 L$ T0 o" U4 `9 a5 `;;
将此次交易的记录加入到customertrade-record-all6 y% {) w9 J: l+ V5 f* J3 [
end7 ]! [: ~5 y; T1 S

5 I1 t$ y# s6 K5 i5 ~' Rto update-local-reputation
0 _0 }6 X1 y) I" nset [trade-record-one-len] of myself length [trade-record-one] of myself
5 F2 ^/ d0 m0 O. E2 k+ L, \
' ]8 m. ~+ Y- |7 N5 n' Z; g6 n' ]# x' t# t+ a: F
;;if [trade-record-one-len] of myself > 3
5 c4 f$ e  Q' C- w! \
update-neighbor-total
6 N& {" T% ?8 _;;
更新邻居节点的数目,在此进行# R( ]( S/ ^! @  @" |" L) E& H& x
let i 3$ H# I4 F' y6 d2 i2 [) I
let sum-time 0- ^1 \, s3 }/ e/ O* n# D
while[i < [trade-record-one-len] of myself]
0 z  F% |/ Z9 v) K[0 k. C5 B1 \( a$ I
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& {  x. y+ C# G% t; \! ?/ X
set i
& D. @7 G8 @. d( i + 1)

2 b3 D* I& k' G. ^6 p]
6 W0 U( y2 L. ?+ \  J* X- ?let j 3) L8 Y8 D3 p% Q. s' i! [
let sum-money 0
9 x* b5 G, F& a; Y' o% e! Awhile[j < [trade-record-one-len] of myself]
0 [* d2 s9 I  ?[
' k2 j2 E0 g+ E9 h, K0 y3 I" @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): b0 n4 T* a& U+ h* p' T
set j
) w! z! F0 f" J+ s( j + 1)

) C( G' Y( n" l8 ~- Z]4 x/ ?, C5 |7 q( S7 K; h3 \
let k 3
7 B+ Z0 ~& F9 c- d& \( Vlet power 0
5 q& B: \: `: M4 Y# Klet local 0
( A' [1 _: \  v: V# _! l4 `while [k <[trade-record-one-len] of myself]
( W. w$ F2 \' y9 S/ Y[
; b" B" ~. F$ Q& X. B7 oset 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) ! v: s# k( ~2 T: |$ h
set k (k + 1)
7 G8 G6 V% k: k, o% @# }, p]
. D: }, A( a6 O; d# J6 [. eset [local-reputation] of myself (local)
/ G+ g7 F% s6 Eend
% s3 i: @' X6 g, o8 ~3 X. A
! _/ t  X: Y0 z8 Mto update-neighbor-total. @. K: F( E, w0 q: }- w
& L3 g5 ^' r3 ~3 p1 \2 [2 i! ~5 p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ U  _. _7 r3 D: J6 ?" Q8 e6 y! {* j6 a& H

; s- d1 J- X6 b3 X' k3 Jend
/ y8 ~# X  @, f: i) o/ }
2 P# y3 h8 s0 i8 \& H! Wto update-credibility-ijl 8 W) M& Z2 Z# n+ A5 g

0 [) i/ X) r5 M0 y! Q0 h6 _+ t5 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。( g. I6 P# g  Y$ @  B$ s
let l 03 y  X6 T0 W% x1 Z9 g" `
while[ l < people ]" W0 a1 u* q3 \/ l
;;
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' j1 @9 M" B* C! v0 t
[
& S1 ^* e: ^7 s+ [) \2 w2 p; ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ c3 G$ P3 ^- a' i8 ]0 o1 {  g) w+ Dif (trade-record-one-j-l-len > 3)
2 V3 P. I$ Z, V1 M# Q[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
* m7 F+ A) E6 p' P! N- Ylet i 33 `, w- Q: `9 ?. E
let sum-time 08 b) P- W; \6 v
while[i < trade-record-one-len]; P9 p% j1 \0 \! E4 p; Y" }
[% B* Y& q: o/ q- s* v8 d, k- q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 o2 b  U! e& w/ ~6 _: Hset i4 A" P. U! y6 U
( i + 1)

5 y% g' Y- v& {3 O* ~  x% o]/ o7 @; ^7 z5 \+ m" L- \
let credibility-i-j-l 0
: C. S! T1 }' |5 x;;i
评价(jjl的评价)  O! p" ?) R2 p) U0 z
let j 3
9 t; E0 H1 F+ w- z6 Zlet k 4: j" l$ |! I) L4 J0 i+ `1 l
while[j < trade-record-one-len]
7 D3 [3 t3 N+ Z( m, h1 C1 x6 H[. Y! W+ s. O6 n# z1 _3 J, l
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
5 {5 f1 u4 n% i. A6 Hset 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); w- [4 m- T: |' b5 s$ ?
set j
2 H5 F, s0 y1 w' u5 R: B( j + 1)
2 _) n. F4 s7 i: F  H9 z
]
$ s- j  }) v( ~! B1 H# E& n4 yset [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 ))4 k2 p7 T. D1 U

3 e; b3 y. j! x5 F4 [* k
3 w' L, R! s6 i5 D; `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), X% `4 |, E% M, J9 O
;;
及时更新il的评价质量的评价
7 z' v, b6 C* Z! M4 k% Jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ I2 U: l: M3 N9 d8 ^- [! Yset l (l + 1)
! ]) X( |) R& s: e9 H* L& X]- M, M' |" D$ e. I! r+ K6 w
end
: v; q5 M' c2 y3 x5 X1 r
2 c  E" S5 g+ N9 B5 Q$ V4 yto update-credibility-list+ U2 O( u- e) A; i& n# j4 {
let i 0. x9 j/ I1 a; s/ P. U. A
while[i < people]5 I, F- |/ {! Y' b7 S  L* n' Q
[
/ g  s3 b* ^* O, f/ o8 d1 Glet j 0
2 b/ w, m. t8 L7 Q) J3 H0 M) k+ h3 Mlet note 0
- g  F  V# x( n/ E3 Plet k 0
$ R7 \* H. W/ j4 G- E2 [# n;;
计作出过评价的邻居节点的数目
: Z+ e; r" x) }# I: L) C) cwhile[j < people]
( D$ x- j+ j) _' V! j# L/ W[
1 |7 p" H' h2 o+ J0 gif (item j( [credibility] of turtle (i + 1)) != -1)
1 x# l: F- p: d- j4 V6 |% _;;
判断是否给本turtle的评价质量做出过评价的节点
7 v* T& H" _1 f$ M9 O[set note (note + item j ([credibility]of turtle (i + 1)))0 H7 U- U4 W5 o, ^3 @( e9 g
;;*(exp (-(people - 2)))/(people - 2))]

# i, `3 A3 U3 s# P; [9 @set k (k + 1)
1 N  P) G9 f2 C]; C* ~" }* t8 j4 O  S$ x5 \  R  d0 W3 _
set j (j + 1)
3 Z/ X1 Y( \- C1 z]
5 h& V- q" K, n) ]! U# tset note (note *(exp (- (1 / k)))/ k)
+ A* g- h' L; vset credibility-list (replace-item i credibility-list note)* j. \' X. T) O9 u$ I
set i (i + 1)1 ]$ e" T9 Y' D7 v# c6 W
]
8 [( {+ ^3 d% \$ c- X( z  `end. d9 e" h/ A  \+ Y

+ H4 p* w4 x1 P7 {to update-global-reputation-list* q5 B& _' g& j! g
let j 03 D+ G+ p' N* {3 @0 F# I; V
while[j < people]% J  e7 r; N( |: D  f6 M1 R8 B; i
[
0 |7 B- H+ e0 s3 alet new 0
& P* `5 z7 r% G* @' w3 z2 [# f;;
暂存新的一个全局声誉
) D, v) `6 `/ V: \- k; {8 Alet i 0
$ t1 T! i, H' P6 G1 Y6 flet sum-money 00 K2 a5 R8 I) Z0 U
let credibility-money 0
7 _- Y! [  c$ @3 h) w. q6 Awhile [i < people]
* F- |  E7 w& w4 G+ M; y- @[
. @" {" {) O: M3 a2 r& Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 F+ `+ T( L7 |) v$ p# a
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 J# V" I. i; F7 h7 G3 {% jset i (i + 1)
* z/ J# ~( f/ T! I1 J& b]5 M$ Z2 R+ ~' x7 L1 `) g
let k 0; j: i" `8 W* n, d/ S: y- V1 e
let new1 0
* G  ?0 W6 z3 s7 g) wwhile [k < people]: h& M) f, M: q7 Y3 t8 R, v
[
. I( S% v( v3 [* k3 Z* v! ?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)" v& e/ ^6 Y/ D/ M
set k (k + 1)3 @3 Y0 b) |) u: b
]) s  e- A  z) ^2 r% N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 w8 a+ ?" N' Y* r1 l  S- I. j
set global-reputation-list (replace-item j global-reputation-list new)% D! S5 U. z) L/ x# P8 o" Y! H8 v% {
set j (j + 1)
" r! {; a) k  [! P5 r2 a4 {]
$ d6 t( S4 g+ W& iend
8 H: M/ f# B( E5 j6 W/ `1 O5 C5 J
* m/ {& ~* W1 m6 v& F, v! _4 F1 W1 W0 J: r: _( w

$ K, x1 D: C+ q' f2 ~to get-color4 n. U* N5 l6 J
  B; D( I0 j& n; e
set color blue
0 o5 g  T6 t, N2 B
end
* `$ `5 t' N- n* I" z" m8 Z# H- d* q& x
to poll-class/ f3 L3 p2 P3 ~
end# `4 f- i/ a3 D: C0 e
" n6 R0 \. s( t
to setup-plot1
. C( f0 t  N' {  p. S6 [  r! j; m
3 Y. P, ^* F) [1 zset-current-plot "Trends-of-Local-reputation"
" I" q% B7 d3 N4 |3 l" O

  W& [! N# u. M1 M% e* t* Eset-plot-x-range 0 xmax
2 V3 X  u; T2 s& A9 Q6 K3 R

& A7 M+ g. b  k) Z1 M0 q/ C) @8 Xset-plot-y-range 0.0 ymax

2 J9 L& v3 y! [4 A+ b$ m% l# tend
( h/ B& c" M$ _) G( Y2 R4 `
& L0 O+ N- {! W0 a  {- v9 R' tto setup-plot2( B* |% p+ r* L. @4 Q, Z
# w0 ^3 m. ^, W$ |- R. L' |
set-current-plot "Trends-of-global-reputation"

+ V( ^$ i( u% n- f5 ?) M: w# H% [) [; T$ \
set-plot-x-range 0 xmax
0 S: O( o* B: z7 n) W! g

. y1 u$ v/ u9 w" y* c. }  h4 S9 |set-plot-y-range 0.0 ymax

' U! O! [# \" n5 x! Qend1 ]0 z) X( {+ o5 D  [5 V- N

) U2 V* d! H2 |  V7 o& Hto setup-plot30 A/ Z: D- i1 j  R

: w% V7 ~9 Z1 t9 u  \- O- Tset-current-plot "Trends-of-credibility"
+ j% q' b: ]7 b  o7 ]& D1 g

6 p% H. L$ G) O9 v+ _set-plot-x-range 0 xmax

( }% ~, n4 ~1 G# [, c' n+ a6 b( M0 ^- n, p' j% A
set-plot-y-range 0.0 ymax

$ W! n" I$ F2 ]7 I- [, _end
% r. m9 c2 t) R1 P7 Y( S. O* d
4 w# u2 ], I4 {5 P* dto do-plots$ ^9 M0 Y# t8 i4 }4 g/ `% a4 r1 U' l
set-current-plot "Trends-of-Local-reputation"+ o2 m- d7 i. w! e9 G
set-current-plot-pen "Honest service"& y% D" F8 Q, H3 F% Y, n
end: i+ g/ x& j  X; S" _% O

1 F9 ?+ w6 ?# P: i7 n8 m[ 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.. l& P! d. @) r7 ^5 p8 X& {% u& f- s
9 D1 M" `8 Y! g+ m7 h4 R7 k4 z
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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