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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:
. v/ j3 S! \) Y6 a5 P5 `to do-business
7 l$ {) b! s1 U9 i% C7 v rt random 3606 a# ]3 F- V% @9 J- W( }) p# c
fd 13 J: o! @4 N9 h% T% o0 K6 ?4 n
ifelse(other turtles-here != nobody)[
5 K8 A( ^1 ?' d+ ]/ ]! I. l% {   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.7 {7 s8 N$ }6 J  d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 n' `9 n0 P+ |/ ?/ v, J
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 D0 v4 V  d$ O: \, x
   set [trade-record-one-len] of self length [trade-record-one] of self1 l7 A$ [0 i3 A# b" A) J
   set trade-record-current( list (timer) (random money-upper-limit)); Q4 {) U6 j" x/ m# A1 g) B" ~
: o$ K' F7 Z. P2 ^+ n' E
问题的提示如下:. @- {& |% ^$ m, ], M

: F7 g( u; o+ A! T+ U3 Uerror while turtle 50 running OF in procedure DO-BUSINESS
, D0 n1 K6 b/ G1 l( Y$ {" Z5 b  called by procedure GO
! A# O( W, O0 l3 u- T1 s+ POF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ m* `2 h9 X; j+ ~6 j1 |" K6 Z
(halted running of go)- K0 |+ P1 K) q, Z4 W& E

3 a' r: z4 V" t( ?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~~+ i; N( p; q2 p  j8 i" [
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
& i1 a# l# i) v2 q# P: ~globals[  u+ R# y! s* h" [) P( c
xmax' h- U0 g* @! r1 I, d/ M8 t. A9 p
ymax& V, Y. B" }/ x( h" [' t, H
global-reputation-list0 O% g: f4 B, z3 c, e' ~2 g1 q6 h

7 e9 g8 i* P% K, i;;
每一个turtle的全局声誉都存在此LIST
/ V- W0 N$ O! M5 Y& X& _& [credibility-list
5 N: y& `. N! _. [+ H7 J$ I;;
每一个turtle的评价可信度# m) s/ n0 n' R8 T6 A2 }  ]5 q
honest-service7 [  e" l3 k' m" D5 Z
unhonest-service4 a" M3 ]1 r2 x' ^
oscillation
) Y% C; V( q$ X9 }rand-dynamic
7 ]. P, J' @! {]
7 D/ z" w6 s  A' L
& _! ^* @- g! j: ^9 a* X) Iturtles-own[, b. Z5 q3 v# l( _0 o
trade-record-all
" F* T8 X5 N: k6 t7 l;;a list of lists,
trade-record-one组成6 \) V5 B8 B  m" n' r, k. p! g
trade-record-one" `9 j4 l' D$ _( b1 i/ ?5 ]  r6 s! R
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" F4 r  ?/ ]2 \4 K- D# E2 J8 a( k
1 C9 Q$ ~& r. Y4 ]% D
;;[
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]]
  k6 O) n9 a  Y1 Z( Ctrade-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]) U1 t. u, r/ Y8 |9 y5 ~. 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" B* Q2 {- Z& A# C" g: Q' S; F" W
neighbor-total; [+ I; G: q' X
;;
记录该turtle的邻居节点的数目" V9 [* s7 K$ C
trade-time% q) E. E" m) G. l
;;
当前发生交易的turtle的交易时间% c# [) t8 y4 I0 [8 T- ?6 O1 x( @* V
appraise-give
$ r4 X1 k( p; o5 ^% Q; `;;
当前发生交易时给出的评价
+ U8 r% J5 k% Q9 C2 ]) O4 h. }2 W  \appraise-receive
' ]7 B2 c: l: P" D;;
当前发生交易时收到的评价
4 ?9 m9 Z3 P  T9 T8 Uappraise-time
6 s+ S5 e1 k+ c1 ]6 ~0 C;;
当前发生交易时的评价时间. ^* N6 W& I$ k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 \% D9 E, ~$ a% Q: m* ttrade-times-total' f0 l$ k5 |1 f- R" U, N2 h
;;
与当前turtle的交易总次数4 F' i4 d, g/ Y9 Y: z4 E
trade-money-total! a' R' x# R4 _2 P% T( y
;;
与当前turtle的交易总金额  F" C7 M7 F  s4 }# f
local-reputation
5 h% A: d% _  Q. O2 K+ }2 Vglobal-reputation
8 h1 p& R/ H9 L; E; Hcredibility  W! u) {. V5 X* [( O
;;
评价可信度,每次交易后都需要更新
. p* O* l! F5 O) gcredibility-all
  ]( u6 Z6 `5 K2 {9 ?1 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6 W4 |; _  W- Z0 C8 `; A8 O$ e
4 O$ K" g# g6 L. J6 D5 Y! U
;;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0.53 u' U0 \! c- U: y" B7 X
credibility-one
' a6 M/ v# V6 G" p7 W& a. g/ @;;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/ e1 s  P! E; ~  _: E8 Z- T; y
global-proportion2 a2 H) f8 x. A+ S/ p
customer" _! ^4 G+ N4 s! d, [" m* O" ~
customer-no5 v# m  e" `6 c5 B
trust-ok( f, F; I: K- z2 u7 q1 @4 E2 d
trade-record-one-len;;trade-record-one的长度
9 n  S- q9 h. Y+ L2 l]6 z" D  k) a( ?  }

! X' V1 x0 V' C. o, d;;setup procedure
+ n6 [/ m# h" ?& ]+ q  K6 ?0 C$ ]; I: j2 Q2 ?
to setup
4 ~7 h' M$ p  J/ i  |; S2 z" ^+ x% v$ J1 |( z8 @9 e* r$ u
ca

! ], t0 V" N" j0 y7 G' Q
) k  w/ d6 B' Xinitialize-settings
  x2 X- K6 L( ~% i

9 e1 E3 Q! B) N* H! Jcrt people [setup-turtles]

0 f; ^3 i. Z6 |) W
$ Y# y2 W, a  \/ |" w% Xreset-timer

! T5 S. H5 a! X! M- c/ m) E
* K+ b( r# H% K1 I, P% O2 n% ^poll-class
% @* ^* x# x4 H4 P+ c- p5 @/ H* R( k4 `- Q

5 B' i2 r, R5 v6 y# ksetup-plots
. A2 Z/ l! C' \7 e; U

8 T7 }" @  s) b5 I; jdo-plots

6 _$ c+ t0 ?; C& ^: G- Y" }4 \- Wend
: a* k, O- @6 e1 O! K, w% \4 N& p) N
to initialize-settings2 R- O& V1 N4 b" k8 N
) ^* p1 d  c  f" I, ?  \& ]; `
set global-reputation-list []
2 r  l: ~3 r3 B" T

7 y3 f# |  E1 W! xset credibility-list n-values people [0.5]

4 G* J8 X& }6 ?# u5 Q5 v  b
1 W! i% X! t6 C9 Pset honest-service 0
2 b. g1 ~1 K( e3 W

1 c0 x3 w7 I2 T0 Dset unhonest-service 0
3 D" Z0 K) _# _
4 Y) A3 r+ T+ l
set oscillation 0

; o4 o5 D/ y5 f; B/ N9 j8 T* c2 D+ C
set rand-dynamic 0

) R- ?- l' i0 C5 Fend$ f8 ?/ m" x& G

# v6 m" ^3 z- s" n( }! D6 Vto setup-turtles
& ^! \% [# }8 K% rset shape "person"  ?1 b) E4 T$ x8 S2 X: h
setxy random-xcor random-ycor
$ v) b. i$ w2 y8 Q, h" C9 tset trade-record-one []9 G3 d' _3 x: ^) X

0 v  H) _4 T& hset trade-record-all n-values people [(list (? + 1) 0 0)]
+ W9 q/ D3 h, J# K- P* m

2 Z% ]. O$ q6 U7 Vset trade-record-current []9 u6 W4 g2 `" R8 _' J9 ?
set credibility-receive []- }- p, q3 F6 f, r/ |  Y/ m
set local-reputation 0.5
4 Q) S; q, Y7 T% x; G) Aset neighbor-total 0
. h: W* D& L5 |) l# A0 Iset trade-times-total 0! ]4 i7 n5 R+ E4 L/ H
set trade-money-total 04 M5 Z% q5 T6 X8 k# E8 y$ L, S& |
set customer nobody
# g$ c) g5 u- M; \0 E$ R' R. `set credibility-all n-values people [creat-credibility]
$ x5 Z6 o/ I! s# ~/ Lset credibility n-values people [-1]
0 ]( e9 H- ^1 D$ ]2 P+ p1 ?get-color
: |' L. K# m2 M& |  E; p! X

: A9 I! }. _+ Nend  G3 C: t" g9 B% Y& g* w- ]
* Y6 x7 O! W* m
to-report creat-credibility6 D0 q' B  h" G+ Y9 a* D
report n-values people [0.5]
# R2 o3 L" K! _/ p) H# qend
3 b* W2 c) i5 W4 O) v/ r  B* k: ~  w/ W5 p1 |7 ]  g: L' I" c
to setup-plots
" X& d6 }5 n! u4 i
- U, S% f9 k/ G" Yset xmax 30
2 `$ P' v: [5 U. R1 }+ M' }
; S9 A" L! ]  u0 c7 G
set ymax 1.0

. V7 E6 H1 {9 H
5 S! y: P" X3 ~) @% sclear-all-plots

, ]' D9 [* ^- ~/ |* t* j0 Q
5 j/ v8 M8 y. F4 J- B/ osetup-plot1
- E6 T. B; i; U" N
3 o9 r5 g1 w$ v
setup-plot2
& n, u5 d& V' H; ?
/ a: q; ]  D+ Y1 I
setup-plot3
2 |4 z  I# g3 e. M/ n  w7 ^
end
2 m5 V& b, c# S6 A" |" b5 X5 b4 \& {  U7 ~
;;run time procedures( \7 l) J' J2 _. h" u
# M# }0 z* U1 r$ _; v
to go( M7 o; @# ]' P; Y! A+ ?" `

% a! o$ t- M& x0 d5 Jask turtles [do-business]

( g2 v6 r4 G3 _; [end- R% e! |0 y6 O* _' p' v- [

& q2 ?# Z) H: x6 g; ^to do-business 5 S+ M& \  f& F$ N  h0 G: `2 u5 n/ J

' c/ d0 u- h# d- u6 p; C. m2 {0 ^4 N' q$ h8 D! e3 H1 O8 C  C3 [
rt random 360
5 o! g# p8 M) O8 J2 J/ }; w6 Y7 s. E3 J

7 u( e- q7 J, G' jfd 1

: R8 F  h2 s7 T3 E) m7 I0 L6 k- d( H; L+ @& b5 P) p
ifelse(other turtles-here != nobody)[

8 E' n* K% ?5 `4 `  `; x: f* `; P2 a9 D! W; |' A
set customer one-of other turtles-here
4 z# r2 A/ A" N! A9 ?
1 U8 A- Y7 _! {5 Z% U
;; set [customer] of customer myself

  T5 Q# E$ S/ Y4 G' ~
) ^1 s" R% i# s3 uset [trade-record-one] of self item (([who] of customer) - 1)  l- I& e3 F& E* f5 p) u
[trade-record-all]of self
( Q7 ], v, s7 E! I' s7 |& |) O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 X4 c- c5 A7 m9 c6 g+ t; s) m! T3 V$ Z# p
set [trade-record-one] of customer item (([who] of self) - 1)
! }4 g- y0 [& c7 k5 W[trade-record-all]of customer
7 u5 m2 S2 M4 v" z( M( q/ a
1 ^2 u4 H/ b+ E& i' V
set [trade-record-one-len] of self length [trade-record-one] of self
2 B: u! I6 N7 y1 \2 s0 u1 U
; z2 r% V( x: a8 b; R
set trade-record-current( list (timer) (random money-upper-limit))

1 o9 k1 z8 ^( C/ C6 f$ V# ^, w
8 W- \8 ~0 Y$ d+ @  hask self [do-trust]6 D" m" F0 `5 a8 i8 g* \7 C
;;
先求ij的信任度
# B9 A: r7 S! E# A+ T
& E6 X1 i; ^4 A" B/ jif ([trust-ok] of self)) ?& J4 z4 c6 Q  n
;;
根据ij的信任度来决定是否与j进行交易[2 ]0 k) ]0 N; i1 m- d  Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 F2 i8 s, V1 E) q' {1 n( z

$ L$ T5 v6 Q9 ]. U[

- S9 l5 Y* C: T' d# V, u% W( j; [& i
do-trade
( N: r2 [4 }' i! l" U0 t3 \

& g3 c* y& \; qupdate-credibility-ijl

6 ~7 S% b, o" i
1 Q8 t, K( a' n) \$ x5 {4 e3 Bupdate-credibility-list( `) r8 G* h0 X" k5 r/ p% B+ ]

# Q1 m7 f, `9 q* P1 ^0 S7 v
- X$ @$ R: T. H" s, O8 aupdate-global-reputation-list

& u5 M8 U! l4 q3 C9 M) A; \! M1 e% }- S) v! U( `
poll-class
* Z' e( b2 Y$ f3 t" X6 F

. @3 Z! C: G8 A1 Xget-color
, x" S8 v- T9 M
2 u, h1 q! l) T/ n
]]
4 J9 {# H9 H" E* I3 z# ^  L7 s; Q+ }+ q. @3 M$ e6 x
;;
如果所得的信任度满足条件,则进行交易
. ?0 c! P1 @, S$ Z3 k
- i( V4 I1 k) P# ?[
0 q4 ^5 I3 c. _
4 L; G1 `6 G# R
rt random 360

4 f/ s0 {2 R4 x2 z1 G* V) ~/ K! s3 B: H8 o# W, P% E) V
fd 1
" @4 K% q" i" o& t7 d! g- O% M9 j

& N* w7 ^: L$ C  d1 D1 n]
; b) R' v8 f( S: L/ a7 B! j3 r0 F3 ^
) ?  K/ t1 B8 q7 c
end

% S/ f3 _/ M% f# Z7 n6 Y  g/ f" ^# M: ~8 M# H
to do-trust 5 v! _  c+ M7 |( n$ G9 n; w
set trust-ok False  v$ r( F2 F* E3 N3 w$ Z

7 f/ o) K7 l) V2 W: d6 u

7 o4 K. i% e0 b, E& Jlet max-trade-times 0
* r  b: z* e' _0 Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' e7 K8 a" h4 {! tlet max-trade-money 02 a2 ]: r6 t# |4 w7 `1 i7 V1 v' j( p8 A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. T6 F3 D8 W! v7 k
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ N+ c2 |2 y4 u" o6 ?! U  O6 V
9 |5 _: P* A4 }2 W6 m. y% h* [- Y

, g9 ~; H, M/ m5 ~- mget-global-proportion' E: d1 i) C; {( O
let trust-value& @* r9 [& f; C8 ^1 i/ @
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)
( {$ s5 Y9 n- z9 m' ]
if(trust-value > trade-trust-value)
4 {8 ^4 J9 T, p! _1 e& I[set trust-ok true]( ^& U# Z6 h/ ]9 ?' ]% c, O
end: B$ z9 O3 t  C7 a
6 Y6 q# f: d0 `0 k5 O9 b. K- e
to get-global-proportion
/ m0 O- |9 v) L0 zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ S( \! z, Z3 N  S2 o7 P2 S[set global-proportion 0]
+ m* V& i, y) _$ X! b[let i 0. N4 C6 T0 l( p) h& }4 z/ H
let sum-money 0$ B2 I7 [5 R/ G7 x- @
while[ i < people]  }* l; z$ C$ f  O# }. I8 v
[2 b1 s1 z9 k6 Z; O8 o
if( length (item i
9 b# j1 b: k3 z[trade-record-all] of customer) > 3 )

0 y/ `) z) I, y3 v$ a9 B) d  A- s[
5 ?8 E) H9 K! A. xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# z0 @: Y% ^/ Z, `& K6 [7 ?4 ^]. R4 Z% z# H. K- {3 O+ `
]& a+ g4 N9 E8 P2 R0 w
let j 0
: t" b0 l" ~, X  ]7 T+ T; F* }let note 0
8 i4 P  u/ I& Y8 Pwhile[ j < people]
- E" l/ Y& w! @  {[
* k- J! r  U( _& H3 tif( length (item i, w/ A( s8 h3 O
[trade-record-all] of customer) > 3 )

  q/ T/ i* P. Q' N[
' c. A- F1 f7 k* }5 difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 l( R; g8 \2 l# {; l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! n7 Q# i9 |3 T. |9 r0 t, K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 ?0 A; \& q. ?# r]' x* n7 ?; y# W
]. s: r" ?9 [, w3 L3 }# u! Q
set global-proportion note$ S* v  S# B% N( N9 A  u5 c- i) D; E2 b) F
]9 J& j% _( X9 K8 B! |2 {
end
4 `& P% |; c: o- ?9 H% m7 d7 p4 q) ?. y4 M
to do-trade8 C2 M+ A1 ?+ \# J9 J4 ~# j5 y
;;
这个过程实际上是给双方作出评价的过程
) p1 z. Z# }, j2 [. K; Y9 A% Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 ]5 q4 a* O- e/ y" Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 g2 z0 z9 \6 n& h: b. f
set trade-record-current lput(timer) trade-record-current
2 r! P8 A7 f) K# \* v, I) A9 n;;
评价时间) f* S  {5 X8 n
ask myself [2 W2 S5 D+ d6 h! r! B
update-local-reputation
# m$ ^: c3 z1 B- B, e( g, }" i% ?set trade-record-current lput([local-reputation] of myself) trade-record-current
; d1 V6 h' q8 L7 a  c5 e]+ W  f) l4 ]5 [6 C! G) n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' x7 s/ p0 x+ W4 D
;;
将此次交易的记录加入到trade-record-one
  X1 d8 W1 f1 @- |! z/ K( f8 gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), H" G& x( Y- ?: _* ]
let note (item 2 trade-record-current )6 \. B' P" X- ^2 a5 I; ~( p& ^2 Z
set trade-record-current
7 `  `" O/ P: q, f- q(replace-item 2 trade-record-current (item 3 trade-record-current))
1 k; O; M7 Z0 [1 _6 j
set trade-record-current) Y/ x7 M; j5 Z& w. T  \
(replace-item 3 trade-record-current note)
4 d0 z* E# W2 L+ c7 l6 M2 ^. G* d! j; N
2 [+ G0 ?! m9 B( m3 B
ask customer [; u9 s0 F' t4 R+ b3 r( n
update-local-reputation" B9 w1 @2 ^6 D; Y+ ]
set trade-record-current
2 P4 J: Z4 ]* {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) Q$ W. }% D, L# ~" _- h$ T]
- R$ Q; V, b. I# ~% o  A& l, I
" u& f' `% t. N. w( q  Z
3 |  U% a" M! O6 q* W) Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 m2 m9 D" j$ @( y4 G) N" M5 s( `
" Z6 b  I9 X3 \2 I, z% |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ ?$ a& i5 |+ @. G8 X;;
将此次交易的记录加入到customertrade-record-all
5 P# ]3 x$ f* h2 Q' k/ X* [. ?end/ {# p. n! z) W2 X9 [4 k8 w/ l3 p

' b. d( _' T2 b* w4 [& sto update-local-reputation  f& C) A+ e) S- E9 v/ j$ M
set [trade-record-one-len] of myself length [trade-record-one] of myself
* f  A1 n9 j" D; n: ?+ R+ E$ I+ V
5 j, ?/ q7 d) J8 v. Z) t( ^/ k6 X; x% p% l- f+ V7 u
;;if [trade-record-one-len] of myself > 3
" P+ C: d1 s) ]. T# J6 _2 r2 s
update-neighbor-total
5 y; ?' d9 m9 y* q7 P( {;;
更新邻居节点的数目,在此进行
) [; L6 N3 x9 L. o) ~5 S" b0 Tlet i 38 k" h/ m% Z! a7 S1 M$ w
let sum-time 0
. B/ X3 n1 e3 e6 p: Vwhile[i < [trade-record-one-len] of myself]
$ |+ f7 w5 D9 t: R6 Z" ?+ T! T[  c6 x0 O  }# i3 r8 a7 {, ]; P" B, |
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 _# w  g9 T  @$ \- g- Kset i
& N9 }" r/ I/ ^3 D0 R4 |( i + 1)

" H6 P2 }' E' e/ o& m4 O]
$ G+ x' f) F; y) S6 z4 Q! [3 mlet j 3
% X# |+ ^7 \7 w+ q5 i# E# J9 y) Llet sum-money 0
% J$ [* e2 C# n4 Xwhile[j < [trade-record-one-len] of myself]  W, l- X7 n5 s. N; g; u; B+ G# i
[4 i3 D) r3 A$ K# g
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)5 J9 J# q- c2 k' y5 }6 X4 n0 }8 x1 v3 P
set j
4 ~. H/ C! ?4 ~. w( j + 1)
1 p6 P$ S% f4 g3 s
]0 n3 d8 s4 k; V; w( |6 r
let k 3
* p% `7 X7 m" P! M; N# Xlet power 0% p3 M  E9 G) _9 I! m
let local 0, h4 M  W/ q% W5 L1 s% s# ]
while [k <[trade-record-one-len] of myself]
0 Y/ e7 Q) g2 K8 X7 X# l[
9 N; D. t2 e: O0 t" mset 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)
! E/ F2 C% b  O, Cset k (k + 1). o; a& j0 r9 g) `3 o' r4 @* n4 ^
]6 ]( t0 y' n  s% N
set [local-reputation] of myself (local)9 h/ |( g1 g5 D  S. b0 ~& E
end8 K! ^: `" c2 p' A1 z1 V

5 ~, \" U: R7 }8 t$ ato update-neighbor-total
, h% Q- q( N6 L7 J- c  A: B+ t
- L5 p5 c# C1 J5 i; z% Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 h- R/ o- X) q. _! R; @
% I' j. c" _7 b1 |7 S; j5 q

+ p0 N* k2 b& f. e/ bend
) i' {/ w8 O+ z9 j
: p* U7 n0 U( q) i9 ^to update-credibility-ijl
2 {5 c# `; ?5 s3 G6 _+ _1 i
% ]9 \- F6 |- N# s( w, E;;
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。
, ^; ]3 o# a9 h9 Y% d+ \7 B4 ?let l 0, N  R) }* w5 m0 ]0 }
while[ l < people ]/ O( r" i( @. H0 D$ a" I/ O
;;
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' w- u- z9 O: m) O$ ]9 E* K
[
4 S0 v5 }7 D$ `4 f4 llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 n2 T4 _' I; `" [  xif (trade-record-one-j-l-len > 3)
6 I8 F. i0 O0 l/ O8 u( ~  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
$ f, |5 @# E1 Z: Z! Qlet i 37 E. p$ n5 z, Z' ]$ N
let sum-time 0
) e8 Z2 G1 D, }: ~) Nwhile[i < trade-record-one-len]/ o1 m4 [7 y8 z! k
[3 d( J0 J# s* U2 o. n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( O6 j8 o1 L+ v
set i" f; [6 o: n( i6 H0 N
( i + 1)

- g. s! V  H0 ]' m]9 X8 Z+ J- T/ d4 a  j2 B# D& \
let credibility-i-j-l 0
" H7 ]* i: V8 T;;i
评价(jjl的评价)( O0 i, T) r+ M3 w9 s/ u$ l
let j 38 K) Z5 h3 X! P$ @
let k 4
9 c( `  l7 X& W+ \while[j < trade-record-one-len]
2 [) u/ u3 L8 `# ]4 I3 Q[& K# e1 H2 V6 ~5 m4 v/ X, 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) e0 t4 f( C6 v4 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)
1 y2 @; ?- [1 hset j+ D5 c. Z1 y% v5 ~9 s
( j + 1)

% V: O7 e( n# i4 r]( w8 b2 P. S4 {
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 ))+ g9 T0 Y8 P# w! z6 Y1 W, ?) x9 m
& z2 F, f5 t  L( [: x4 E" N

9 X9 t, [; ]% T' `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 [/ h- t( s" Z: |6 v
;;
及时更新il的评价质量的评价
' F+ M0 L; C" u& R- d' N  {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; T  S* @4 {* q3 F0 e
set l (l + 1)' ~8 ?: a5 x/ e( _$ y; c7 R
]
, y9 E, o: x2 j0 n7 dend
3 N/ s4 ]* u" q5 g+ G4 ?! ?
, v% @( Y* D0 w3 `0 cto update-credibility-list
+ Z# t( M; w0 e- llet i 0( X9 W( b2 a& ]
while[i < people]6 I/ ~, H9 v* O* s: V. b+ I
[7 t4 Q; Q  a8 m/ n5 @
let j 06 P# X8 _1 j: v0 x8 l0 M% j% }9 `" Q
let note 0
* ~" ^" `7 ^! Qlet k 0
; o% U( _6 R/ p" ~- c6 O; U! b;;
计作出过评价的邻居节点的数目" U5 D5 z$ b; i8 m9 \" q
while[j < people]
* n2 g8 C  `+ M2 O/ d[; p; A7 _& f5 E1 L) I1 K
if (item j( [credibility] of turtle (i + 1)) != -1)
9 S2 Z3 C" d1 z;;
判断是否给本turtle的评价质量做出过评价的节点, o5 Z9 v8 X$ z3 F! `6 E0 e( p
[set note (note + item j ([credibility]of turtle (i + 1)))* p/ W# g9 _: g$ O
;;*(exp (-(people - 2)))/(people - 2))]

! q4 D6 P* D9 I* c# g6 w0 g' Qset k (k + 1)
6 W0 b$ P  h0 B/ h& `! q]
8 D3 ], T& g2 H. ~) F3 Q) Iset j (j + 1). _6 d8 d3 k( u. x$ m2 U% @
]( m! }# ^( T: k0 m  ]( p
set note (note *(exp (- (1 / k)))/ k)/ o! e2 m; e. i
set credibility-list (replace-item i credibility-list note)+ e- ^' b* a2 Q
set i (i + 1)/ J2 n) O6 B# d9 r+ {
]
9 T$ W: e+ U/ E( vend5 a+ H# J5 w7 l

, P5 K; a6 @; N+ H8 X2 @5 j: _to update-global-reputation-list
& s' c7 _/ p. B3 Ilet j 0
5 n0 |: }) K6 r" Z# ywhile[j < people]$ K& a( f1 M' f, K
[# `- e; l. g; n0 j8 H3 w
let new 0! B5 F/ {6 b( ]% j( E
;;
暂存新的一个全局声誉
- l$ q3 A  P* i) flet i 0  u( V. `( z; i! o
let sum-money 0
) B9 [7 I% H6 y4 i) M3 @let credibility-money 0
. b' N. I( H! P6 r7 V2 r  Awhile [i < people]
3 g7 r; Y1 M9 j2 x  D5 ~* B[
, e" T9 s; I5 u( W" Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% Z3 S/ r; H$ R# w# Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# ]0 o0 ~# _' y& I+ fset i (i + 1)
# @4 {/ T( N7 q& c& d6 }  `]
* [+ ^0 {: I# i+ O/ c. X3 w/ |let k 0
$ d% V& D0 B( M' |9 f: U4 Rlet new1 0# S4 ~: r8 I; P4 o& f. b3 i7 J
while [k < people]# [# y5 U9 z6 R% j# X- l
[  S( ?- K4 `: p  f$ c: z
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)* ^  R( V8 a" b- S1 i
set k (k + 1)2 D0 t# C% }7 {' j
]
9 a' Z6 t; z. P- V; \& Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' q2 f# A' L3 @/ Vset global-reputation-list (replace-item j global-reputation-list new)
4 I3 Q6 \! T. k0 p) p2 [* Rset j (j + 1)
. u* U3 o0 C# E1 ~]* u. I+ Q: A3 n% N4 U# G  ^3 O
end2 z- T4 w, f5 L7 z# W
9 l/ j. {5 I- b  [7 i/ n4 f
3 c% x2 m' C5 V

! j2 \, ?( b3 k6 E" L4 [' Vto get-color8 V2 n  ~0 K  U6 A' \' o; b( b7 ?

8 ~/ D* A0 _1 W* @0 D+ W7 t# a# aset color blue

* y* N& n9 R; g9 C6 _6 a% q+ ~end9 j' q# o2 F# W- f1 p: J

9 k8 [" b' P  A2 o8 Ato poll-class
+ k9 I$ d/ R' V8 V/ j- Dend
/ |5 {, W0 ^9 R6 b& B4 ]$ `1 f. I" S. S# d; E! |! |, d3 O
to setup-plot1
5 d1 ?6 |2 L7 e* p# ]8 Q2 U8 t+ e/ X" `
set-current-plot "Trends-of-Local-reputation"
, h$ u$ H; t6 {6 ]6 |! B. F, z* \
2 ?2 q/ n7 D' w, B3 k
set-plot-x-range 0 xmax
& O9 i" E. S2 F3 i* K2 X8 E
8 V+ ^& W1 I1 m0 c
set-plot-y-range 0.0 ymax
5 C  {) p7 B/ N6 j: f1 T0 ]
end3 M9 }9 m5 y* o5 N* @4 U/ |
6 F! J7 e/ v# J8 O
to setup-plot2
. Y! z3 Q! ]8 ], e& G6 s0 ~" N- m1 N- q
set-current-plot "Trends-of-global-reputation"
7 G! e! d) N: q+ \2 y  o1 u
2 j) ~, O) l0 T. f% n
set-plot-x-range 0 xmax

( W8 S9 {2 L/ g1 H8 _. j
+ T  N: N5 c6 I( k) o& Rset-plot-y-range 0.0 ymax

  ^  ^- Z- Y/ h2 W7 X3 U/ Uend1 f7 |5 G! L' |0 {+ q  s
  |  d0 J. Y2 z& m
to setup-plot3. v. E. c/ Y% l7 t

" K+ q# q! V5 i: ?0 Vset-current-plot "Trends-of-credibility"
. a9 @! S1 b6 `% R( Z  `& ]4 D
- `8 R1 @8 W: a8 Z( l  [& ~1 _6 X
set-plot-x-range 0 xmax
' G. C: i8 L$ A& T9 Q5 k
4 u, T* B% f+ ]8 a
set-plot-y-range 0.0 ymax

2 N2 w6 V) n0 T- w7 x# zend
6 p$ S4 `* S) P6 A9 A& ^6 A$ P/ F1 \8 T
to do-plots8 i- d6 |1 h, m( I# M
set-current-plot "Trends-of-Local-reputation"2 i, ~+ Z5 {: d9 [# l
set-current-plot-pen "Honest service"
5 D: C1 n  e9 oend- M7 I$ L, N5 K' C1 J! J( x; \
# ~0 |  n5 D* \
[ 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.
& P  Q0 h" u! Z/ d) p
) K* B' h" D, u8 Y. f0 D" H1 F  G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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