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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:$ u0 i' m5 H1 l  G8 G
to do-business 6 e2 t7 |( I4 U2 u
rt random 360
' D3 z, I) J; E8 w5 C fd 1
  V5 s7 @- o( X ifelse(other turtles-here != nobody)[% @3 X: {6 F$ v6 K" K# V6 J
   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.2 u: ^8 B( z# k; q5 f0 n3 K8 U4 v* B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 T# F; K( D8 x& t+ |2 ^8 c6 b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 f" z! s8 s% D6 J* T0 `% p  P  _   set [trade-record-one-len] of self length [trade-record-one] of self8 B% J0 [; d/ y% Q" j
   set trade-record-current( list (timer) (random money-upper-limit))
9 P' _2 h, Q9 }# p6 s% \" I9 l
问题的提示如下:
4 d+ `# x* D' i  }, C4 t
, m6 e) a, ?8 Z) k# i3 E' werror while turtle 50 running OF in procedure DO-BUSINESS7 K" U. O* X2 ?8 c% G2 S
  called by procedure GO
  R1 c$ I( {2 L' h% x' Y1 V+ KOF expected input to be a turtle agentset or turtle but got NOBODY instead.; E/ r+ |: R  o% n1 c
(halted running of go)* w) C0 X1 X: M) t- f  |

, X% u$ R% f2 ^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~~
) Z) }7 m9 x! N; P3 A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' }+ l5 h7 u+ s
globals[
' T( y  c, E7 v4 M' d! ]8 T6 |xmax
+ f8 K, m% p. E# ^/ |/ Z5 v: xymax
& V/ a6 t2 H; d6 k, ?* q& Mglobal-reputation-list8 ]- z5 h  N1 v8 N; f% n9 p
8 ?8 r3 b) j2 k$ K' y7 s
;;
每一个turtle的全局声誉都存在此LIST  `2 b0 j, U& A1 _3 y; P
credibility-list
+ l7 n' z+ m& C;;
每一个turtle的评价可信度" T4 n% G7 j: O% `
honest-service6 t( w! @0 W' }: j- X$ G+ s7 a2 V
unhonest-service" J3 O+ F2 u" x; N; M
oscillation
, M; I! L2 K( Vrand-dynamic! P, `2 R. j% b* @* N/ o* N7 G
]6 F# y% l$ x7 B: j; x5 A. I

# f! B8 z+ }$ O& ~turtles-own[
$ C9 ], z, k( a' t) l% `trade-record-all0 H/ `. G, K' I" B8 D8 f: A' {$ a
;;a list of lists,
trade-record-one组成1 T# I  K- p! A1 G" e; u
trade-record-one
( w  F! c2 n! M( u# |$ l/ 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; Z; y4 H6 R2 |6 x0 Q1 H& E9 m
! S! M3 S  P8 h" P. L5 \% M, 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]]
( R" r3 b8 k9 G6 j, ]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]. c! V/ d. G/ o$ A; }( f
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. w1 J7 O" K  l0 h; T
neighbor-total& Y+ ]. f; X. E: C. q, P( n
;;
记录该turtle的邻居节点的数目% W/ H( w& P  g6 \" l& ^
trade-time
# c3 c% K6 I9 q# S6 s;;
当前发生交易的turtle的交易时间3 k! V: N( j9 j) x6 T: Q' [" a
appraise-give; s( k2 P: w; V3 t% C9 F. q) s' k* n( O
;;
当前发生交易时给出的评价
6 m- j' ~8 z- }" B7 Q* G  vappraise-receive
+ Y/ d" C- ~% t% B;;
当前发生交易时收到的评价
+ q* G  p5 k& W8 u: xappraise-time
4 z% _) B/ r; g# S$ ~3 P: \;;
当前发生交易时的评价时间! o% C0 n5 R1 d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% _4 R$ T$ ~/ U1 X
trade-times-total
; r5 D3 p1 L! f1 l) L. Q;;
与当前turtle的交易总次数( V8 O1 t8 {" N+ G
trade-money-total
# Q2 ^& _, A0 t' k* S: L2 @;;
与当前turtle的交易总金额: M7 ^' k5 [, K9 R6 ]$ Y1 [9 u
local-reputation! q6 Q% h' n' K0 C0 U& R
global-reputation0 \3 a+ |& M9 ]( W8 ?# w
credibility& d# E0 V2 `" i+ b
;;
评价可信度,每次交易后都需要更新; q' J8 R5 u! X, ^9 o7 ]2 C
credibility-all
3 t! p5 ?  m& [+ {3 F1 t;;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
1 n2 Y0 z- ]' P; J9 R' f' y4 i# s& ^1 a7 T$ Q  O9 K" h- B0 [
;;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
. f# q; W5 R1 M  I' U( ucredibility-one
) h& T5 x& H) p, d$ b1 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
: }: Z5 T4 L& h) P1 e$ Q9 Z" Nglobal-proportion
0 K1 P+ l) J9 rcustomer+ G8 S- d4 J) C, L: X
customer-no! c) c" F9 e0 e& n
trust-ok# E. O: O7 j5 c. J: w
trade-record-one-len;;trade-record-one的长度2 S6 b( T" c1 L0 a5 T6 B3 U
]
5 D# W5 D2 i4 ^
; r: p# {5 q9 A: I2 Z% s;;setup procedure: L+ x" U2 [! Y' y

$ _: a+ d3 R7 D4 |to setup6 {( y3 @+ k6 G" e+ Z8 j) i! D1 U% ~
$ _4 P6 k1 v2 A" H6 n& O/ C; p5 B) `
ca
' Q. N+ I8 }7 h. f3 w: h
5 u# @$ _& ^$ Q) U/ v
initialize-settings
& y6 C7 V/ m4 l' m  k
4 |; B, `9 k. L+ k4 G( ~
crt people [setup-turtles]

- I. |$ R) X7 L4 c9 i  d1 j: S- t' v: q
reset-timer
" x) s. N+ v0 ~$ E! ^, n

* G( V5 I& x2 o2 }6 L8 h3 |poll-class
9 f- h6 G& H' D6 l4 f  i. d% ^

( O" F: D# X7 \; n5 h0 v  y0 ksetup-plots
; E6 V" P& L/ O) U2 |. z6 G
! f2 u7 \2 e! C+ C
do-plots
, [7 Q  q: z6 M( U1 g: I6 k
end8 m2 t% _& Z& y8 m+ M4 u! t( n
2 ~% @5 n1 g7 q# Y1 V% A
to initialize-settings
9 I+ }& Q6 D9 B8 C7 @
* T. ~3 j2 h+ K6 Tset global-reputation-list []

: Y! @+ x/ G/ z* w6 F( C3 U) c" v6 p& u, E* q* [1 R6 b
set credibility-list n-values people [0.5]
5 \* n9 K( Y+ S

8 g7 d/ `; l+ E1 U: Gset honest-service 0

: d1 q, y8 ~5 t, H1 b9 E) `0 E  b) b( v- }0 X
set unhonest-service 0

+ J* h5 ^- d7 R4 \7 C" f- C9 L) g9 o* s$ [% g3 O2 F- e9 V) {- v* Z
set oscillation 0

4 w0 i; p, b5 H$ n1 }/ g) }- z5 S; D' D+ L
set rand-dynamic 0

- L/ Y; d- y4 A$ h4 `end, O% ~+ l/ ^7 E+ r- c, Y) L
4 A6 i2 d4 U' {4 _: F
to setup-turtles
! I  e8 `* f8 x- W6 p* zset shape "person"
) _5 l0 q/ m- W# v; Tsetxy random-xcor random-ycor( B* X6 r% [+ y- T% _7 U
set trade-record-one []
" J/ [) p$ _8 `! E. C) T+ {
. y4 U# _$ |' m0 E1 n( t
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 r4 R4 p/ i' H! U$ [/ u* Z/ |: _* ^
. B+ M8 V( w% H8 ^0 s7 [* q
set trade-record-current []# a2 ?6 m) W( c3 @; O5 g
set credibility-receive []
. _% A' K, a4 O8 qset local-reputation 0.58 t" N, o8 Q* B8 p' B: I
set neighbor-total 0
- U; E+ i6 |+ l0 B. gset trade-times-total 0" w" I6 x6 v) U, b
set trade-money-total 0
6 p( b- M, _9 m6 r$ Eset customer nobody
, b  {$ m+ {1 Jset credibility-all n-values people [creat-credibility]' j. y3 E7 x* a7 y( J$ }5 {
set credibility n-values people [-1]
7 G* V( p( j7 l# C2 o- K# }get-color
0 b& R) P- t9 f# E& W& y/ W! \

$ V4 ^5 h  V9 Bend
2 K; c: \5 d+ F0 |4 _6 \, V5 o% N7 ]4 ~/ f- E. H# l
to-report creat-credibility* x0 f5 v. B1 k1 [/ E; m! W/ R5 m( r
report n-values people [0.5]1 E1 `! d& Z* X* |- W$ w9 P
end
4 }# x7 _2 |. a0 d# T& u0 q; P' |7 \  B1 @6 I1 W/ Z/ G
to setup-plots
8 c% Y/ ~3 {0 m" w8 H
& [# z+ ]* `: \( d, h- bset xmax 30
  @7 l8 v2 j: K! N* L7 V. {2 @

# c+ z( a6 d; dset ymax 1.0
3 c( H- _8 X5 i3 g! o: o+ u' Q

" c- K% g. t, k  W0 Yclear-all-plots
5 j7 F% V/ q) N% H8 D6 p4 |; r

9 {+ y4 N- M4 J" f; Q+ Y! Ssetup-plot1
9 t. o  K9 N. R+ Z7 q* V5 B5 e0 w' e
% W& |8 ~) _: M. Q7 J* C
setup-plot2
5 \3 A- g! E0 V# J5 o0 k& P
- C+ i' F0 g- o
setup-plot3
+ K2 j: N" c) e' ?
end
: _5 N; j( u: t9 J- {% E# S9 L2 E" K* D3 }* w& F  i+ s2 X
;;run time procedures
4 F5 Z$ A& \. L+ v
+ O+ q! m! {/ [: n) Fto go
5 V. f  H) k3 _; w& \' X7 `
2 g# [& @* K& ]3 X/ p+ Nask turtles [do-business]
# R) W* I$ r1 Z4 {' z4 i2 T
end9 S; k6 _6 v2 e
; H% e  n- j% Z4 s, y$ W
to do-business
4 N. I) c/ Y" D$ I3 V* V$ S- i
$ G. ~. j: [6 x! M- j9 y8 O
) K/ y4 n, A+ ?# A0 W8 k+ Q6 \3 m
rt random 360
9 E& r, ]; T9 z0 D3 n; m6 B
9 \% Y) d( T$ X: G$ h% l/ w
fd 1

# |" \7 P9 @( c8 Q- o' }6 Y% ]5 X: z2 L& Y. W! A
ifelse(other turtles-here != nobody)[
6 D4 S/ d: V5 U; m1 P* w
5 [8 h% }6 p9 ]$ l# b
set customer one-of other turtles-here

6 T" l5 S9 e: d; e/ X5 `2 y" y: d
;; set [customer] of customer myself
: x- y, h8 U5 }- v
4 k- H' o$ F7 \) P$ s
set [trade-record-one] of self item (([who] of customer) - 1)3 s2 K0 g! M8 R# w! N0 c. G* A' C
[trade-record-all]of self
8 X' a  t' [* g8 S) O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) W( }6 n: C3 ~) u9 f3 Y$ s
8 O5 b6 j: K0 i
set [trade-record-one] of customer item (([who] of self) - 1)
0 n+ i: k- P" R% e" ^) T9 _% [[trade-record-all]of customer

5 d6 G- ]5 u* v( A. {
9 Z3 S$ U  v# e0 E" `$ k' b+ Bset [trade-record-one-len] of self length [trade-record-one] of self

6 X0 @* H3 |# U  S8 D/ I- `
; Y8 R+ q3 A! ~; W8 q+ p7 n" Wset trade-record-current( list (timer) (random money-upper-limit))

/ Q4 @: A- Y( j8 f- b& D! c% R% s* L& G0 O- S* ^
ask self [do-trust]
# h/ j4 O2 i! W+ d9 {* n, _' h' S;;
先求ij的信任度+ f; x3 p' k5 p% M3 N& s! \
& S. Y) d5 _3 L4 A- h: d, [
if ([trust-ok] of self)6 o. }) H# [' x5 L  R2 ^
;;
根据ij的信任度来决定是否与j进行交易[
9 s  V, u2 E! \& J/ Q1 N4 {ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 C, V5 U; x9 d& x; J- j
* g/ Q7 M1 F0 L% U. L" W7 J
[

5 d5 z, k) z# {( w: E3 X" Q' o+ |/ p, `- f, O
do-trade
; L$ ?0 p4 M/ B  g1 n
& r! ~. J+ H$ s- \: @0 ]; m4 x
update-credibility-ijl

+ d: K/ N8 `( U+ F
9 f. O. l  n& K+ Hupdate-credibility-list2 y- V$ F6 P" s9 |2 _) M- Y# L# T

# r7 s# V# b  @% `' a2 o- d$ C6 k6 o8 ~$ t
update-global-reputation-list
: i& M" _8 K0 D  R2 m# ?6 U

( l4 |! k7 L) K, s! T$ G# {poll-class
1 g9 C( H5 [6 p4 z
9 b$ ]* O3 Q) c
get-color
; Y; Z7 [$ s5 M+ N9 H& \: o

9 j- O3 f0 n( ^( B% M9 Q]]- j8 I  ~: o$ ?; N3 X( G' `

: s) \$ Q8 X9 |;;
如果所得的信任度满足条件,则进行交易
4 m2 u; ?4 W9 L$ \) X1 R" e5 \& z/ n( j' W* ^& N2 C
[
. o3 w8 g& @4 H, b( g

. u; N% U- Y2 o  \/ ~3 }1 krt random 360
$ ~) N# E+ @. Y
) Q! R3 i5 y$ H
fd 1
7 o/ F* @6 U4 Z0 q: C" C4 s

1 t  r1 Y$ q4 K" l6 `/ h]

) M* @9 [6 i8 k! P5 f0 j6 ^6 e/ e0 l
end
' |2 ?# l6 _1 s( H' S2 p. i

9 {! D4 t5 N/ N  a7 T5 J, Kto do-trust 5 U' I! u3 F0 G8 f
set trust-ok False
$ _6 h% Y; m+ m  ~/ y; w1 X' U+ w) P! W6 {! ^

1 a4 q' q0 o* \% g0 H1 z+ f) n+ V7 Ylet max-trade-times 0
8 n" B( z4 x0 C/ c& wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& E9 T6 k0 Z- P  }# Klet max-trade-money 0
& ?- a2 z; R" ?7 u' w5 Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 A; D8 O+ a! j$ D6 d* D: q+ }) jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" J; f0 N- i8 f1 O/ I' S$ y

. ^' j; ^' g/ x9 o8 k  C8 J. r
2 a2 J1 `, g3 S4 ]: @: |" W
get-global-proportion
6 k$ F3 D% ]8 ilet trust-value
5 I5 f# q& ]1 u6 Z  M# n% plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) d  s. E: y1 c7 {if(trust-value > trade-trust-value)" z1 d, Y2 @6 J) X- V# e6 W
[set trust-ok true]. a2 ^1 ?3 r6 a
end
. Y" R! @% V& ~( J0 w2 Q; k5 F- D8 V% O, \9 u6 c. Q
to get-global-proportion
# V% }5 D; P( z) O) [& F5 Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 e9 |0 g9 v8 I, A[set global-proportion 0]2 z- g! b. d  ]( ?9 T- U7 k
[let i 0
* x) d; R8 |# }3 T8 B" glet sum-money 0+ o0 U; E2 y2 s5 X+ u
while[ i < people]0 f( W& C$ H/ |  a
[7 n, Y6 {0 ~& p
if( length (item i9 {" H: t, X5 S% {
[trade-record-all] of customer) > 3 )
& d9 F; H5 c! g; z; S% U, E' u& M
[7 ?, R( n9 T' p  d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); a+ F. n) ^3 I$ _% x8 K
]  o' M" A6 J6 o, F  d1 t0 _* I
]
+ L+ g' t, b/ s. alet j 02 ]" L1 S+ W, }$ s# d
let note 0
0 S! l0 a& R6 C+ ^) v& `6 k8 s7 l8 Jwhile[ j < people]8 \3 T( c/ c! u( L) l
[
' [/ E: }/ D: x2 W3 G& p, r: \! U+ pif( length (item i
# A! Z4 i  k/ n5 q! Z  n[trade-record-all] of customer) > 3 )
! G" ]- b$ _! \4 @, r7 \* [5 A+ V
[# w* Z6 r5 V$ H- a  J, j# ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 F: W, E3 X; ]& y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 \% S; P3 E" I1 H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ P" T' l2 s: _8 F& i]
- b% }* C3 X2 V]4 p/ i3 `( N, E% R# {6 _
set global-proportion note
- T4 |: n) ^( a; }0 ~; J]
, Z7 }" D0 I! p* `* o3 `end
% N+ r/ |+ o/ t2 p. W- R
4 f/ d# J: S8 l: {1 Ito do-trade- y  J, ~8 Q1 R% N! M+ y
;;
这个过程实际上是给双方作出评价的过程
5 L: b6 y  C7 A7 ]  r# i1 E$ q" }+ fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' T9 A5 j! A- B6 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 K: C3 B- j9 O, ?2 i% n' J8 l
set trade-record-current lput(timer) trade-record-current9 Z6 Y% G. k6 U- G0 G3 u! P
;;
评价时间
1 l2 |/ L1 D: wask myself [
  ]( g' b1 P" w3 o& z9 J" Qupdate-local-reputation% }3 R9 D* g+ y9 T/ E# [. j
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 X' ~- v) Y! \2 b) v]
9 {, _4 I1 p/ y! i8 gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! p0 e6 b8 ?# W0 {- h3 ?;;
将此次交易的记录加入到trade-record-one
2 ~' Q# n. Q2 ~+ I3 o. @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' l/ _4 M: p* Q' ]
let note (item 2 trade-record-current ), m  N& d- c6 E- q7 O) }/ E
set trade-record-current
2 z( {3 a( Y% ^( a: x(replace-item 2 trade-record-current (item 3 trade-record-current))

; U* a4 C; F3 I* d+ Pset trade-record-current
- |3 L" c1 y# j$ o. l(replace-item 3 trade-record-current note)- V0 o, R' F5 V% W  e: e
3 \- \/ i+ o. N$ b# T" O8 {

+ Z& F- j/ O8 u5 K- N3 M, Bask customer [0 }: ~7 U$ O2 x3 {- l" J
update-local-reputation
# p# e( _7 u7 f9 {set trade-record-current3 X. J" |: X% W$ F1 j# o& Q( O
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ [- R( |6 j. n1 ^. m& p2 U
]  j1 D' r* S8 u/ b4 P

- k+ \6 V" G: X  ~# j  u) j" a

1 p! e1 S% M* o  Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- C( d6 k& d: D. e& Q% F" A

# e" q. P; `% }  e; e$ O3 }8 f4 N) Cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% u8 [0 `3 E9 i7 ^% |- d8 G;;
将此次交易的记录加入到customertrade-record-all; D9 P8 O. F1 g) r
end9 y. l$ p% V. i* B9 |# k
+ g- j- W9 d8 Y0 A6 `
to update-local-reputation2 K8 ]! z  P$ m& K# s2 |* H+ V: U7 H
set [trade-record-one-len] of myself length [trade-record-one] of myself5 G& }% a& C, T7 S% O, @* |! t& e

+ j: @/ X. K) X1 \8 _2 b
5 s; ^; C* \# j7 E* X;;if [trade-record-one-len] of myself > 3
  s( v1 a8 w# x, v
update-neighbor-total
& t7 L5 }9 a/ |: `8 m* b/ ~;;
更新邻居节点的数目,在此进行
+ d$ X4 z) E* g0 V' mlet i 3, U6 \! j' m* p* |( I
let sum-time 0- v& L5 O7 ^. o1 H
while[i < [trade-record-one-len] of myself]" ]0 Q8 v8 _" U5 H; v
[
! d8 ]/ h, W0 E' e; ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& v5 f- O+ X- f' h$ d8 [, j
set i
2 u( g5 g; {  S/ J( i + 1)

% y- z, |: d& [. t" k]
3 g  k6 M; C% p; ?let j 3
5 W( Y& ^  F* N. i- Z* x8 slet sum-money 03 u* X- o" _/ ~% j0 F! i9 h, Q# S
while[j < [trade-record-one-len] of myself]
- `+ K7 ^# ]$ u: @0 N[& V; U2 z+ m# F9 c5 `" u7 W) q/ @
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)
' v. E5 X. @$ N' B' A. P1 f7 x- Tset j
- D% F  ?. F* O# q( j + 1)

4 F. M: P( T* T5 j. o]5 B  ^5 L" R; M% C" D) a
let k 38 B) D8 v0 D4 c2 x: e" N4 N
let power 0
% I. ~- g# N: G4 H0 ilet local 03 O) E0 m, \1 R  J: H" d5 F, |
while [k <[trade-record-one-len] of myself]
# U7 D) A9 n' f! u) }[
4 J/ M/ v. t+ b9 fset 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)
' c5 T2 E! t) R6 f8 u6 ^  J# W( yset k (k + 1)  e( M/ u* x/ V/ }" |0 ~7 Q
]
8 v6 h2 u, ]) o: B9 y6 eset [local-reputation] of myself (local)
7 ^$ ]' @, G$ W2 E" _& c8 Cend
! [1 J- x1 [& }% A2 }1 [0 ]5 i/ w8 l. X8 P* T
to update-neighbor-total# i' W' M; c$ A, [& o7 P

& i- ?, x6 a; Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 ?( H! y: a) a' X# @) x. f( w/ v

6 v% _9 P2 Z2 E; Y9 ?% i) ^end
$ ~3 Q+ g2 W+ W! ~" a, y+ g6 ~7 {7 \" `* m; G( B7 v. o
to update-credibility-ijl
9 k4 M+ W7 z! P% y/ a
' U" `6 [( u! ]% e$ Z;;
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。
) x) @! v# l; B, ^8 q" R# |let l 06 H$ H4 ~& t+ g8 w: Y# Q& l/ ]8 E
while[ l < people ]; ?$ k9 w, z& I1 t: Z
;;
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1 Z& o" u( _5 d( a$ q' R6 d5 T
[$ c7 \. A; o- E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# Y1 R5 a/ W- d9 l7 P
if (trade-record-one-j-l-len > 3)
% C( h; \% c( ]. ?) ][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
& H  U1 `  H% ~2 C6 hlet i 3% s- i" y2 {) A* W7 w, b
let sum-time 0
1 w$ h: S2 k0 U! ?- j0 ywhile[i < trade-record-one-len]
( }8 F  C6 x7 t) Q" |[
4 d3 e5 Q4 s7 R/ j1 k, o2 T; r/ Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ O( }/ p' }5 Z1 }set i
0 ~' `' o2 C" `' a8 D) \6 s( i + 1)

+ I+ x, T& e' I]
3 Q  W1 \/ i. S  X/ f/ M+ Ilet credibility-i-j-l 0
# G4 D+ g* l7 F+ H;;i
评价(jjl的评价): _* \* `) f4 {
let j 3- h* w9 P8 c4 W8 {
let k 4$ n0 B  h- Y+ S. u/ [; f2 f3 d: X
while[j < trade-record-one-len]* z6 l0 U7 F2 f+ u+ M0 _! M. o
[, E3 V5 k# j5 H. O. v: M4 [  G
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3 F# i) X# j6 P0 b" O+ K
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)
0 ]. V+ ]4 j; g' o% Cset j$ @9 q" z, N. _+ L/ s
( j + 1)
5 v* |- y' }  n2 s
]
, U4 r! a( Y( [& }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 ))
- u: w" m5 A! s3 }8 S* a  s; }* _* z6 d4 p7 V4 X. |
  g* b, X# W3 `6 p6 L8 n
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& |" s/ U0 s! x: L4 b;;
及时更新il的评价质量的评价
- x4 g, G+ Q) o, b" f8 cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ E! G3 V9 R0 v
set l (l + 1)
6 p$ Z2 j- ^3 k; d- U* w* J]6 v/ ]2 p! N* _: @8 S8 s
end
7 O9 C. ~* S2 T0 |- g" W: f6 X& s; B" C! E' x
to update-credibility-list  `3 C$ i* q& _
let i 0
% H0 V" \+ y1 v" D; N! P* Jwhile[i < people]+ P! w# M7 H0 G5 B
[/ R: K' d+ E% l+ X
let j 0% G8 i3 g$ }/ X; O
let note 0
4 ~8 }& ~( o! g# Zlet k 0# p, G' @3 R9 m" A) n) e
;;
计作出过评价的邻居节点的数目
4 y6 l1 @" v& a8 N2 Mwhile[j < people]
7 D4 B6 t* F/ N* h7 ]0 Z( G+ T[
6 w9 e- v, K0 e) Hif (item j( [credibility] of turtle (i + 1)) != -1)
" G3 n9 p7 f' I) d1 T;;
判断是否给本turtle的评价质量做出过评价的节点
$ Q$ Q) t* e' h7 `[set note (note + item j ([credibility]of turtle (i + 1)))! b) \- Q, J' B7 |5 U
;;*(exp (-(people - 2)))/(people - 2))]

! ?7 Z; |& Q4 d! d. w2 d& d2 B1 Hset k (k + 1)
+ N& {$ {4 G3 N]
/ ]  n% w4 z9 nset j (j + 1)( w7 M0 v: K0 I8 l3 V; J+ y  h2 R
]
5 }) L( W6 d" a- Y' y+ l6 Wset note (note *(exp (- (1 / k)))/ k)( Y6 ~) Y" P" W* p
set credibility-list (replace-item i credibility-list note)* Y. C; D( J) {. b; T7 `
set i (i + 1)
# ~- h! u: ]( a6 ]]
) B  H: m( t: q: c& l1 n8 a1 _. Uend
1 Q, M2 m% V( @- I+ ^! z% ~% K! p
to update-global-reputation-list
2 f% t/ v; c* q5 v. @' ~. klet j 0
4 h" n( v7 J- [7 Z: Gwhile[j < people]) g4 z, u1 ^& ^4 Y& q
[" b3 s) k  l; Y6 e8 c. S* c- N5 p
let new 0
' \# I7 q$ {7 c3 m  r' f;;
暂存新的一个全局声誉' ~0 s+ z5 A' J9 N$ Q
let i 0
/ ~+ C0 E) w6 L& xlet sum-money 0" E. H5 E( J! \1 G. ]: e
let credibility-money 0
9 ]( J8 X4 m+ d+ W2 Cwhile [i < people]
6 b. W  a  n. P$ a0 N. m[2 w$ H7 c8 X: d1 m. k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- _+ e9 I& ], z/ r/ Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 C1 w1 t1 H- B5 T4 C% W
set i (i + 1)/ b# Q6 P$ W4 O) n* Y8 i7 n9 b; ?
]
- l9 l  u) ^. N5 f- w& _% Olet k 0
5 U1 _$ M" X) K0 Vlet new1 0! t- U) y# e0 Y* ~6 m' h
while [k < people]
+ E2 s; w5 N, k5 N2 H6 M; u[: C* ^. G# Y- o$ m: p
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)9 ~* ?/ c7 c' R- u& v# X
set k (k + 1)
, y1 B6 Y$ {; y1 I6 N]
% M9 r( b  @0 P) o! Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" x& T) R3 C5 zset global-reputation-list (replace-item j global-reputation-list new)" D, }% I7 ]7 `7 S: c
set j (j + 1)5 f1 I6 i% |7 V
]
8 [# f" I. ^1 I- q( |* a9 c' bend
$ |3 S- A* m: b3 n. c1 K
4 c$ D" E- J% Z& P( N0 R. f% R
  e: f2 m# G" N5 ^- U, n& U: i6 \# w$ U
to get-color8 t# G7 i! I( w. l5 l$ k2 f
1 t' p! m  x. @& g
set color blue

/ a) _/ q* v, s" N+ M1 l/ Fend
8 @& F5 B, C! H' H# @0 w5 c9 _# q# K8 m! W& B" S
to poll-class; S0 c- J5 j. H) M+ O& L
end5 `1 L  M2 c0 g9 b+ i6 `! q

8 a' p' O9 p; C0 F- X6 f2 Wto setup-plot1" V0 \, k1 K3 ^5 v9 n* L6 G5 s! Q. L1 ~
0 w& }! s& V2 }3 x3 u# y. n+ N9 G# Z$ w& u
set-current-plot "Trends-of-Local-reputation"

( `/ Z9 }; O; m! i1 C* C' b4 s- M7 m
set-plot-x-range 0 xmax

/ |6 P- O, U  n0 g, M5 q& x4 n8 {; Q: k" ]& k" [3 q7 W
set-plot-y-range 0.0 ymax

0 W4 y* C2 i; l; uend( N4 m" P7 b8 O/ E0 Q
  r# c' V3 s% w" G4 I
to setup-plot22 `7 U& l: ?# A# m+ K) B  Z- }

7 Y7 \8 l2 |# c' g# ^set-current-plot "Trends-of-global-reputation"

$ R6 j* v# h4 t9 [/ l! ^) X* I0 f: U% ^! n7 w0 ]+ j
set-plot-x-range 0 xmax
& t4 O/ X5 r8 U! A
6 S$ V1 d- ~3 L8 r/ N+ d
set-plot-y-range 0.0 ymax

' m: c8 |, }% d* F( o1 |3 ~" Eend
7 J' a! E, J3 k+ R, x: t* b) }2 ?  k7 i/ F8 c. Q' A
to setup-plot3
! d: _* e; }' i2 C$ g: t- I! a2 H
0 t' d3 k- I, z0 D/ wset-current-plot "Trends-of-credibility"

# z, @) w# ?0 o( t, _" {7 B8 c, V( J5 H
set-plot-x-range 0 xmax

8 r2 q( Q3 r* \9 V# |+ U+ [( b5 s9 `
set-plot-y-range 0.0 ymax
% Y3 \0 p6 a  n% }$ x+ G
end1 g- c, |' e1 {0 F' |7 `. C5 w

. p) c4 D; W* g: X( {8 C7 Y! C* tto do-plots, Z' J( n6 U# i$ ~: t' \. m
set-current-plot "Trends-of-Local-reputation"
; }, ~) r1 M/ ?: S- Q8 v: [; jset-current-plot-pen "Honest service"
, t- Q6 i) l* kend7 f& q6 @' l  d7 A: R

3 |& Q/ |/ k8 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.
# X# n3 `+ K* G* D3 l! k- [
9 D7 n+ j% A3 `% I+ t+ w9 \- A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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