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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:  c$ N' m$ s8 Q9 O5 ^
to do-business ) Q" I$ Y& [( H% {
rt random 3604 V- F' F7 a8 Z5 _/ @
fd 1, f/ L8 O( ]0 W, C
ifelse(other turtles-here != nobody)[
& K3 ^9 |& W: e7 J. f* D; D   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.
" p5 s1 u( x. ~5 O! u# t7 P! x0 e9 _   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 `  Z$ U. O% f/ q$ {0 @( P
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" \! w  b6 R# t# _; V   set [trade-record-one-len] of self length [trade-record-one] of self1 J  _$ b3 k, B2 m
   set trade-record-current( list (timer) (random money-upper-limit))1 R6 m% c, A8 O0 b1 J
0 P; Z" w% Y+ j/ ]3 `0 o  }
问题的提示如下:& E3 d3 |* x. R" l( H+ |

: D0 t9 y7 F& V0 ^error while turtle 50 running OF in procedure DO-BUSINESS
1 o- n+ G9 i: M3 Y0 M& j  called by procedure GO- M) [9 \: t& Q$ @" n5 }% Q, \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" g0 B- R, z: q7 S. n) e
(halted running of go)3 }  \' y; u# G3 g4 U( ^

6 m+ J1 J8 G" f7 {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~~
& N, F  A$ ?( V7 a! C$ r4 h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9 r. g+ Q+ h- {5 B; w2 N
globals[
7 P. N4 n* F2 M0 X" X+ ?xmax: Q  L8 |; ]! z. n# N
ymax& w, y! q# h$ @* [: G. W9 M
global-reputation-list
8 @; h' e& X  H2 K2 j/ `
- D% f9 g9 g9 Z" J# g/ l6 J" j;;
每一个turtle的全局声誉都存在此LIST& o) z% g" a; B9 @) m5 x
credibility-list  l7 d4 m, X4 }
;;
每一个turtle的评价可信度; W' X( C: L  x- ^' d7 \
honest-service
- Y  Q# R  G2 Q8 ~& \unhonest-service0 d+ Q0 @& G) n: [  h" w& y
oscillation
4 W2 X0 k+ s8 L  g* ]rand-dynamic
+ F+ R$ h+ W1 Q9 J5 d, K$ [+ T]3 @7 l& G. R! S& [0 s
4 g: @' m# m: B% i6 Z: b
turtles-own[1 _3 z1 t7 [! l; a/ k+ J) ^
trade-record-all
- _4 |! j$ v$ ~* ?$ D* a. t;;a list of lists,
trade-record-one组成
! x9 S+ W# r9 Y8 [; `& a. [trade-record-one7 W3 `% M$ t# a6 _1 N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ o: f9 d  K0 ^1 |5 q9 e5 _
6 r/ ^, I9 `" K2 l2 C! y3 @3 `
;;[
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]]
1 {3 q0 Z# ^0 o4 Xtrade-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]
" f. {$ \! ]& qcredibility-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; k& p3 D- e- g3 f8 Z' c
neighbor-total# j- U! h$ x& u3 r7 P4 ^, s1 e
;;
记录该turtle的邻居节点的数目8 ?0 @0 ~' Y* G6 O& D2 q
trade-time! F" q! p! O# @/ p
;;
当前发生交易的turtle的交易时间- p& Y/ t2 r8 t8 B  A/ T8 ?
appraise-give0 @# R7 S/ b  q: e, i6 ?
;;
当前发生交易时给出的评价
5 @/ a* r0 E( q" Y) n. Z) Pappraise-receive
2 h- _/ O5 V6 `! X3 ];;
当前发生交易时收到的评价0 G. _% D9 }2 {! y9 p
appraise-time2 Y+ e9 X! y* C+ h
;;
当前发生交易时的评价时间
- H  @' s* R6 i" V! o$ Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉/ E/ c. |, u) {4 g
trade-times-total6 |) v' ^% A' a. K; _: l. Y; c
;;
与当前turtle的交易总次数. f" t! ?/ y8 L# ~+ C  r
trade-money-total
* M- @7 u! K- U;;
与当前turtle的交易总金额
$ [; G4 D# z* i; W& Ulocal-reputation) \0 O0 q" u2 ^( l
global-reputation1 q) y% |* {. N1 Z0 w
credibility
% _9 @' H8 ]# X;;
评价可信度,每次交易后都需要更新
' q$ V9 }" w" T" c' I3 W0 ecredibility-all1 ?3 V$ ?3 s% z& `+ N* V% H! J; 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" }8 e' q3 T8 P+ p& Z% I

6 A+ L2 p5 ]+ k& b& U+ \% t;;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- p9 j1 ]6 |$ O+ @
credibility-one
% u( l3 K3 x: S' y3 l) ^+ Z;;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; \) H" p9 i2 A/ q
global-proportion
" K9 E+ p: n- W# C6 S3 ecustomer9 G: }/ W  [( G% Y
customer-no2 \2 m; s! C, Y- m9 ]
trust-ok
: {7 f- e+ h  Q* g9 U* W$ X: Otrade-record-one-len;;trade-record-one的长度# m3 T& [( L5 r9 [' R
]: h, s: b) t3 j$ s) l7 |) q
5 Z% M5 ^# y. X9 m6 v' Z8 T4 t
;;setup procedure
# h$ E  d6 d, ~& [" \3 |/ I: g& i* x* U* K
to setup8 k7 t: [' v/ V: t+ F! k. o% P7 `

6 g8 J1 n& q8 E5 R* Z0 ~% Kca

7 f0 v  K: a. a; F4 q1 G5 S2 p- v! @8 M
initialize-settings
- H( c; R9 s: @" f3 G$ [) X9 y/ v
2 Y1 @  `/ r. K, m$ m+ F/ u: C
crt people [setup-turtles]

6 ^1 y8 ]: t0 S; j* j2 T5 V0 p* L- e1 y7 h4 e
reset-timer

! s$ G$ ?' J* _% N" l  }3 f, O6 A0 f  m" P5 ~4 s: Z
poll-class
  ?6 X- r; z* j' Z9 x: M

4 q4 _) r* S% Csetup-plots
5 j5 G* m* H5 I8 x

- M6 h' e$ b$ F* ^: I& b: Xdo-plots
( t/ _' K' U6 I7 U- j0 Y4 ?
end: ~2 ~: D4 d+ z5 D5 H8 T: C* Z

- J* }, X3 {* W2 |+ \- e! n7 Gto initialize-settings
, Q! K% |' r8 Z$ `% F% t, J; _) F4 \! H# V5 A
set global-reputation-list []

5 L. i+ E8 \. w2 T  O5 n" H9 o% N
set credibility-list n-values people [0.5]

( @+ X2 X4 V5 `% Q1 ]# N
, a6 Z, w9 k( u+ v( A5 Kset honest-service 0
* D2 }2 n6 b: B8 Y' e+ e
9 l9 P3 o* ]! e5 n9 E
set unhonest-service 0
; ?  a1 }; l4 W: s4 q$ y4 F

; z$ E6 Q$ `/ D9 Hset oscillation 0

& q. J- x+ U. y/ W+ V: r1 A# g8 |4 u, S2 m" s$ C) Y
set rand-dynamic 0

8 z- F( L4 K! }- O" g" Aend
( h% x9 ~' U" u& }+ T% K
4 G9 k* ~+ C3 l6 H# o. s4 uto setup-turtles
+ x5 W( q' \7 n1 c0 y! zset shape "person"
" Y$ D4 L2 I+ ]2 v  h2 ^6 ?) ~6 vsetxy random-xcor random-ycor# _( ]9 c) h" ?4 l$ _# P% a
set trade-record-one []
; t: x5 w$ }, `4 `2 F
( Y# O) H# s  ?' z9 M! h# [
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 i0 y6 N9 C+ B7 b/ o
# e2 s: V, F0 k9 j9 Q7 q) I
set trade-record-current []7 U' [- R6 e9 `6 X9 Z8 E5 G
set credibility-receive []
2 [+ B4 |. w% g2 [5 R6 [set local-reputation 0.5. h3 j" q: z5 v8 O
set neighbor-total 00 ?( J7 K6 p, w0 {% p6 O! n% K
set trade-times-total 09 t8 R$ x+ t& a% O+ d: y6 _! _
set trade-money-total 01 Z: X  w9 l# T4 T& L0 A1 h- }
set customer nobody. ?# q  s( w. \" r1 V7 a" t; x# d
set credibility-all n-values people [creat-credibility]6 ~# v3 m# J- A/ p( k
set credibility n-values people [-1]/ U  i& n: J0 ?8 c- r9 q9 s
get-color% z2 I, i3 P! o/ m/ X' Z
) |3 d. t! y% r4 T
end) C$ [9 V) e9 ~/ ^
6 x6 ^/ l5 f# r! }2 R/ e5 d
to-report creat-credibility/ Q5 s9 Z; [; L: ^* q
report n-values people [0.5]
4 x) u" G1 \: k  Q" cend1 t7 Z/ ?( C# n# E
* X( F. E5 V5 T- D1 M* S; M
to setup-plots
) |/ a' |  [/ z+ b5 P
7 }0 |7 A9 B5 Bset xmax 30

3 j) ^/ q0 F& ?' T  Z
4 z$ F9 q2 S( ]3 X6 Gset ymax 1.0

8 }& z7 w3 H1 d, y% o5 \
0 E1 ~+ Z8 q7 Iclear-all-plots

0 J0 q3 @- @! J' H
& S) U8 A/ ^# b# d* _! z" \2 f3 Csetup-plot1
5 `. Q# L4 e# u. O# E) l2 U! z

# Y' `# m* Q! h% Usetup-plot2

; o/ _* v( P" e6 Q# F  e! @; g! l- X: e9 o( c$ g* W
setup-plot3
" l5 ]8 v6 V1 A" C5 _
end
4 [" s$ ?4 t5 f9 c3 K* Q0 b$ [  a* j# l* `; Z* e
;;run time procedures
# r0 L' Q2 w- s3 n& K) {  ^' E" G: l, ~4 [% M" V
to go
; A6 m) b5 A* y* y5 U0 t7 ~5 S& E4 a
ask turtles [do-business]
& @4 D) c, L* m0 Y  ]
end
8 ?: V8 q% C+ E! `$ Y/ X+ q) A3 Z% ^( k: H' z
to do-business   P2 o6 N/ V( B. t4 O$ c

* n* B+ q: C. H+ m% ^- K
! W4 P8 T5 p  d% q# d/ K% irt random 360

2 U' [/ H6 n1 ^: F+ ]- [
; I" h- k9 e& hfd 1

) \# r! @& X( u
$ s+ V; l; C0 b: z  Pifelse(other turtles-here != nobody)[
$ r8 B! E3 x8 ^% s

2 F6 X; n5 h* z9 }9 t# Bset customer one-of other turtles-here

3 S/ c8 J- q  ]& [; p4 R8 t( t9 X) c1 V+ N; F) b& I
;; set [customer] of customer myself

# l: [! H3 [' K) i
# n5 j  b2 T3 i, @5 N1 q/ ^, }- oset [trade-record-one] of self item (([who] of customer) - 1)
& v8 _/ m* x* i. ~; p) ^+ r; ?[trade-record-all]of self
: J2 e: o( J+ m9 i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 K) `4 j8 I1 v& o5 l) S

" Q! m. i. t' v4 M* I! f& ^2 w9 v- qset [trade-record-one] of customer item (([who] of self) - 1)# w! Y6 u, I' d
[trade-record-all]of customer
8 x1 ~. N; V6 E

, L/ x, M4 u0 @" dset [trade-record-one-len] of self length [trade-record-one] of self
" n' m& ?. v- e/ {  V( ]

! @7 [$ o0 d6 Q. B4 S0 Lset trade-record-current( list (timer) (random money-upper-limit))
9 w, L- Q0 |, b( M% ~* b: Y+ j

) l2 p8 o# s1 }" [ask self [do-trust]- d$ L, e/ N3 b( u# e# K* A  J0 C# P
;;
先求ij的信任度# M1 V9 g/ {' E
, |9 W) x8 M7 y  B* d9 I/ @" P
if ([trust-ok] of self)
+ _6 q8 _) K* h;;
根据ij的信任度来决定是否与j进行交易[. x+ X( G: ?0 ~* ^: o- G3 Q' Z8 i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 n$ \2 Q* L% ~1 i$ }+ i0 p

3 J% }2 m9 c7 U% t6 H5 L: X[
6 U" W  Z( q0 `: Z

' S0 O; W4 \% J" A8 \; tdo-trade
9 ?  A7 C; A" _, G$ X  Z3 O. S; T

2 E* G7 `$ B" [6 zupdate-credibility-ijl
0 H. J# `% P- F0 |) i2 v( g

9 s' F' m6 k+ a+ wupdate-credibility-list
1 h& c" z1 {( D6 x8 Z, ?7 a$ z
/ d3 J/ b- u0 }8 j+ L
4 D! I/ {! c3 w6 [8 o" Z3 I
update-global-reputation-list

$ n, |& J, T' d* C
# @5 V' V; ?  n* G, ^poll-class
7 [0 ]% V; i) s+ p" \

' u4 t# {" i6 K9 E. D0 _% b, eget-color

& i: k* @  E# D& ?3 |9 N6 }5 ]& i' A7 @8 V
]]8 ?- F4 B+ |8 D! _( c* i# F
- o) I! B3 g& h& w+ C& Q/ @# g
;;
如果所得的信任度满足条件,则进行交易; ~& ~! s( ~* C1 {  S- ]

# C5 P; T3 g* q1 c+ c[

2 B$ m9 L+ p  d* Z( b' a# X
) ^/ @. n7 T) Mrt random 360
2 L; j% ]/ U% V' D

/ C& K* C  _( k' {9 pfd 1
" ?, D% n  @0 g  N$ b# L# n

2 Y# V, |8 U0 X- e% C- k9 t]

) C& R3 }% \- i; H( U; }9 W: ]2 K$ ^
end

' @* c' d) C" @  G" E. O; T
+ h( Y- h$ r9 W, {to do-trust
1 E$ r/ h4 K+ }( B- Mset trust-ok False
; N" t! G3 c1 C7 g, A( i2 ?' F# c7 R

  b, O1 c2 }5 u  N8 R6 ~; Q* @let max-trade-times 02 a. j9 P) v" L. Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 ^  [  r2 V# u) \% T
let max-trade-money 0
: I% F# [6 V6 |: H: y( \& O* Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( W5 _/ W) X) tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ \: O0 P. Z" l/ Q; K$ ^1 N. j
- q  ]* e! g7 h, F4 ^

# q& ~; N9 w: B" Gget-global-proportion0 v2 ~# G) E) X: h6 X0 \
let trust-value/ {8 A3 H1 T: m/ P0 u: v, B
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)

# e% m8 Y5 W; X/ }8 R& _$ rif(trust-value > trade-trust-value)9 {  q  ]7 K+ {4 e( r' B/ n
[set trust-ok true], e- k7 S& N* B4 ~( y8 d  ]( r6 M" \
end
! ^7 T* {" N! t. p( l
4 S8 D3 t6 t' V$ Pto get-global-proportion) a& Z* F9 [$ g4 Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), \# `1 C( R9 U
[set global-proportion 0]
+ L$ B$ T# i! M: w: m[let i 0
# T% _& s0 |# l$ k* a, q6 ^let sum-money 0
& d: C/ F, G& |: p9 G( b% Rwhile[ i < people]
0 P. m! h9 r  \7 W; @/ S2 M3 P[( ^3 K( L$ A/ H
if( length (item i
8 B& G5 e1 n$ S4 n% j' T: _[trade-record-all] of customer) > 3 )
9 d: D4 N$ W/ y6 F2 x
[; j9 @( ]2 a8 r7 l. [+ Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, S# ?1 n' R+ z]! |/ r0 w) `2 L# O) R+ e2 [2 e
]  U  n$ u& o( m( U& a/ G
let j 0* K2 h. J! c8 P' h' z+ v) ]
let note 08 |" c/ _/ k6 ^- Q: H& r
while[ j < people]
" r- T9 e" s3 v+ q6 l[
% _0 v5 f' L' q! d3 p- Cif( length (item i
* u1 _' t! d  d7 r[trade-record-all] of customer) > 3 )

: f& Q" g! r3 K. j0 Z4 O[- H& k4 ?, X1 H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 Q" t! ]3 @* v' K
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 K, {, i: S! x. z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 R- \( K; W$ S- ]/ ?! a]
1 p! q/ }3 c: O]
6 X& \. {! ?- Z0 `set global-proportion note0 {: I4 M  ^$ |4 b( x
]
; r3 Z* t+ \$ _  yend/ D: @6 q$ j+ m6 E! i

9 I9 o, A4 e  Y- |$ r, Uto do-trade. m5 k7 g, O- Q( U4 [6 ?0 e$ W
;;
这个过程实际上是给双方作出评价的过程* P" w) c" ]6 n- P: `1 }9 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' y% M6 J5 H, r2 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- q" B" d0 H9 [) t& R* g% [set trade-record-current lput(timer) trade-record-current
/ ^" W7 M3 w* |. P+ c4 o;;
评价时间
" U- g+ g. k( p3 ~, e* K1 \5 y5 f1 l) {ask myself [
( Y. N2 m* r* N; Q! Mupdate-local-reputation/ S4 }$ J  n5 |7 O% `
set trade-record-current lput([local-reputation] of myself) trade-record-current
" \( R1 N9 B) e/ H( X]9 T0 R7 t! ]) ^/ h# y. ]3 |- n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 k* N7 ~. H. c& t2 l2 r1 D8 q
;;
将此次交易的记录加入到trade-record-one/ N' P8 R/ u6 s7 {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 O1 G; C, B! m( \" l' M
let note (item 2 trade-record-current )  t" C" W$ G- |
set trade-record-current
5 z; ]9 ~8 }5 X* s) c8 u  z(replace-item 2 trade-record-current (item 3 trade-record-current))

7 Z) i  |* ~4 {; P7 X% a6 qset trade-record-current& p3 F( c& a" P9 H* z8 _
(replace-item 3 trade-record-current note)
) S9 f) k5 y. A
: K. t6 i3 V4 w+ E
  w" D1 O) q# Y  M6 R$ y7 }2 ^
ask customer [# K! P# [6 f& w9 a  M. F0 L4 l
update-local-reputation
/ f0 @2 A  W3 t8 q7 n7 pset trade-record-current
2 Q9 Q4 v, D1 a! f" G6 w9 Y3 u$ o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- x& i) A4 [7 x6 q]. m5 |) C8 ~( U# C( E
% Y- m% {5 ~7 B/ g% Q: P! z
! P9 B! d& M. g0 q. p# k+ f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% A$ \5 I% o' \
/ J- R) [( l( X/ N9 j/ {1 e) C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# v( S% h' n% b) S# J
;;
将此次交易的记录加入到customertrade-record-all
% r# s. t, e6 i1 b1 I  `& R4 Pend' P9 M, g/ u& W" r" \" L
2 f1 ?$ x" J& R- {4 g
to update-local-reputation" Z, A. s7 l* o- s" M
set [trade-record-one-len] of myself length [trade-record-one] of myself+ r  Y- W( A7 e# c; s/ s
3 o( s9 B5 |! ]- t7 v: m
7 \. s4 }7 D- C) }: x- }: f; k5 s
;;if [trade-record-one-len] of myself > 3
& n1 z& g" K0 ^: \0 s
update-neighbor-total- }- W& N7 K8 v# q8 X
;;
更新邻居节点的数目,在此进行
8 y+ r( d8 q! k* y. D; blet i 3
1 c& S) d6 l5 r% V6 G% Slet sum-time 0
# e# N7 H( Z" f. J4 Y% Xwhile[i < [trade-record-one-len] of myself], h. b# N1 C9 @+ Q
[4 j0 t4 w1 k$ a& j) |
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; D- Y5 W) ~% hset i; \6 r9 ^- N$ I5 j( G
( i + 1)

4 N  n% @/ _9 K- W/ F8 X]
2 k' ^5 g4 \) q) C$ H  E" p+ H4 J# Jlet j 3" K2 L! q1 f/ j4 q% o. O
let sum-money 02 @* G7 y7 p2 ]
while[j < [trade-record-one-len] of myself]
8 `6 i0 B6 W; w& g) t[7 A% |( O3 w' o% x# q- d
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)
. @4 i/ [, E6 _( uset j
+ N- Y+ \0 j; e6 T( j + 1)
, m( V  R4 D2 Z
]4 k& r* H( e3 @/ T3 l
let k 36 P" T5 y; c$ b
let power 0
' L7 H. w# \, V% Z0 \let local 0
. P! V+ C0 @  T" x  H1 o- Awhile [k <[trade-record-one-len] of myself]
% t/ c- Z3 W' ^- e1 V9 a1 S; f[
6 @5 Y! r/ g/ zset 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)
$ L% J4 M4 b1 V! T+ O/ u% gset k (k + 1)# v, a* W# F  F0 R5 J0 {$ b0 J+ b! x8 C
]+ o6 ]1 ]  L6 w; x- z
set [local-reputation] of myself (local), J/ m' K2 F+ z$ M5 V! F; \
end
2 H6 _8 F+ c" ~. S# n# a. i: J
  e' Z9 K0 R) f$ F# P$ A- Kto update-neighbor-total
  v; K% K) m1 ]1 ~4 a; V* U- M4 x) \" E/ L6 W3 M& A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ c0 F) {( i) @; k
9 j3 ?- v' S; \

/ S! {% u6 k$ u$ x/ d$ a. Kend
7 {% T, `3 i- {6 U! D. w6 p4 I
. I1 e5 U$ I+ u, ~# b" H* cto update-credibility-ijl 1 L, _: u: @: Q8 K1 x; r

9 |0 b/ t8 C+ u1 |1 f  Q4 M3 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。% V# F4 F- y2 z. p8 I
let l 0
) r$ c7 T0 j  p  n' c* [) A* Wwhile[ l < people ]
' `5 H) O2 Q9 r* E;;
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
4 y" a! H. n4 F  v$ ~( V8 \[" E3 ]' @- O% i: i! u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) k" R) y4 _& e9 |( ]/ Yif (trade-record-one-j-l-len > 3); G) e! A+ U  L) w! ]* D
[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
! I" b. V' s7 D2 m1 ?1 R" g/ D. Glet i 3
4 H- F( Y! f. ^' I: M" M. H2 Tlet sum-time 0; Q" h+ D8 W# u& Y
while[i < trade-record-one-len]
; Y5 b! f8 c: Q+ C$ P% |[
5 Q, [7 H  n8 Z- K; L: Fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% X3 h+ P- T& T( b4 Q* Cset i
) \5 ?* y. w: f& Y( i + 1)

* X6 C6 O8 x6 F+ k) ~5 K6 Y* k1 b]3 s& u6 [9 D, Y9 t
let credibility-i-j-l 0
8 `: S- N1 ~' o;;i
评价(jjl的评价)
4 p3 i2 m; a7 D. D1 J. |let j 3
! }8 _5 u- x( z! M% flet k 4# r" Y( M. p! i% D+ S; u/ L
while[j < trade-record-one-len]! G0 Q8 x' K) w3 h1 n0 p
[
# H5 o7 p7 r" t3 G5 jwhile [((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 h; A1 p4 {, U  [0 u! t7 q6 ], [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)
8 g& j, O: _' r9 E  T! U& Iset j" }! i) r5 ^# O2 B, g
( j + 1)

' A: j. `. V* z; `]
/ z0 z# N5 @# X: K# o% c2 \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 ))
3 `: F, y% W! ^) R6 g$ L
0 M9 E( S  m2 h, |' ]9 C1 ~

! ]  [/ x6 L+ i3 h5 ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). ^* t* ^/ }  U' Q3 W5 H, R5 a% n
;;
及时更新il的评价质量的评价
( u5 C9 ?. }& pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# A( s' r6 ?0 |3 I
set l (l + 1)
' @0 }8 I0 L+ ?+ d7 r]
0 i% E! q8 P3 N+ W4 O0 ?& ?* L2 {end
- ^! U. m% j6 t* U8 ^$ x% |" P9 E! I5 p6 d& z( y9 U
to update-credibility-list
6 Y1 b0 e( v" Y0 J! E: [let i 0
* ~, _! l7 [: l+ e7 ewhile[i < people]
# t. q+ m& U9 [8 b0 {[
: N8 `1 N; c: Q) p% \let j 0
9 j- F2 F' b& z+ a0 {6 Elet note 03 d! p! M1 |* ]% g6 a# V  {
let k 0
: g) ~9 W/ w4 T6 B9 q* y0 \;;
计作出过评价的邻居节点的数目
' i8 q5 h  k4 Q: Nwhile[j < people]
5 @  T/ l- n* X7 f3 g; V& e[: R+ E" g, `* D6 e) @1 `5 U
if (item j( [credibility] of turtle (i + 1)) != -1)" L1 Z, }. i5 Q
;;
判断是否给本turtle的评价质量做出过评价的节点, s. Q! A) r8 c' h% M. i
[set note (note + item j ([credibility]of turtle (i + 1)))
! \- Z$ W) s% t1 i. e;;*(exp (-(people - 2)))/(people - 2))]
5 b. L. x0 y/ q: S
set k (k + 1)+ c" Q2 y/ R  Y; }; H6 w( C
]
) X! s# E$ r- kset j (j + 1)* g$ i6 f( h; k" p+ e( n8 Y- h! t
]# o- K* s+ N7 d. M
set note (note *(exp (- (1 / k)))/ k)
% ~4 N# q# t) U, Vset credibility-list (replace-item i credibility-list note)
; ~% }5 B, p! e' S7 p& l! ^- Kset i (i + 1)* D$ u8 t3 Q. R# f/ ?
]8 p( D! O0 f! z3 U
end
5 y* B: O' t" a  B$ a( @) v# u3 v$ O
to update-global-reputation-list  Y1 ?2 K( V/ v( H/ w7 f' {
let j 0
7 p0 r6 Y5 G+ ]while[j < people]3 p8 U* s7 u+ w# w" J/ {3 {$ \
[  b7 q. E7 J3 b) r
let new 0
  z6 L( p0 f1 l6 y$ q( f2 q;;
暂存新的一个全局声誉
- B' T! S+ i' i. rlet i 0
! @2 Z) x1 L1 P4 R/ V" Ylet sum-money 0
9 K) {2 v6 ]) U/ l6 Ulet credibility-money 0
# |4 v3 N  x4 G8 O! Wwhile [i < people]( X9 g7 Q1 T! Q$ k( |" x5 J
[7 S3 }% P0 w6 C- o8 G/ H7 w7 I
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 h4 B+ W; m6 M, W. X' o" Y3 I  T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 l! f! R5 t+ c; \2 c+ Q
set i (i + 1)
2 b: o# G7 W/ ?1 y' b]
3 P* M4 O0 J4 {/ qlet k 0- Z) T( v: k! X' m$ W  F) J7 S. m" f5 Q' D
let new1 0! f, s: I2 w/ U! ~" ^* [9 k" `
while [k < people]0 G2 \. x! n* i6 ~( c; f, P
[0 l* K4 l. S+ S! [0 g
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 @5 h2 H$ _3 i3 }+ Bset k (k + 1)' e) d0 ^, `) P3 e
]3 E' m" M" n& A# d$ L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - `  G4 E+ P4 E; k4 S( I
set global-reputation-list (replace-item j global-reputation-list new)
6 U$ i, B& y. Y$ a; Bset j (j + 1)
" J4 a! m0 Y$ c5 o; K; p0 i]! N. N, x3 }2 T$ f0 S) Z; E4 \
end; Y6 I; [: |7 r8 m7 o, l

  s( r) M9 z1 H# z, W" |4 b$ \: k4 E2 g

& z" b! }! e0 R" B7 Cto get-color7 j5 q8 Q% E. a+ y" J. q) o

+ S: K8 R+ G5 [$ z1 _0 O7 \- r6 S* C% Dset color blue
3 e1 k) D' E4 ^- n( e- Z
end
/ O. \1 C0 c0 s2 d8 F) w0 i( S/ ]* p' [. y# ?) b
to poll-class' ?; I2 Y$ L. Z* z2 h
end# u/ [2 _& p' D0 m$ J. G- Z
/ Y& L2 x) `0 g7 ]
to setup-plot1
4 P- ?7 s5 v# ]$ t- {
9 V) L/ M$ p; w) b- R+ S# V, Rset-current-plot "Trends-of-Local-reputation"
* f- [/ f$ _4 m& W
; t  T) p8 D8 y3 ]5 h
set-plot-x-range 0 xmax
4 A2 C7 K/ ~/ F9 _2 n
$ c1 P% ~$ }+ x( N( C% X
set-plot-y-range 0.0 ymax
# t9 }9 J% k& Q# E& a0 N
end
4 N3 t, Y# T0 Q( C8 p% q
, u' Y1 m  J1 F2 Q8 p+ ato setup-plot2& s0 I& K9 z6 W$ e
3 {8 |3 Q- X0 U) F& Q
set-current-plot "Trends-of-global-reputation"

# o. ?/ B* Q: j& @- N( t
2 ~& C5 Y) \. V8 A! Z  ~5 }set-plot-x-range 0 xmax
% D( a+ {; u  X6 r5 @( D5 f
& s- p' b$ ?8 p. d; l
set-plot-y-range 0.0 ymax

% N0 p' _8 h; B- uend
7 w" m1 k- X: }# d2 |9 K
7 {* @& |' ]" T9 M+ Eto setup-plot3% O+ P7 y8 v4 @4 b8 N8 u
" L# P. l& |4 E4 \* \8 l9 e
set-current-plot "Trends-of-credibility"

9 n' n+ [. x; k. a- g" s6 C2 D1 q  C# E/ Z* F- c# b
set-plot-x-range 0 xmax
1 T: A# S0 m' Q& o. t( s% t! Y( F
. a; q/ C4 ?1 z9 @2 Y. a
set-plot-y-range 0.0 ymax

6 _. v/ M2 c6 ^end4 t3 N9 p$ h+ ^4 I& k
( T2 k" t5 K  j' P! t" p
to do-plots& q& K; i) Q" E" ~8 r! P
set-current-plot "Trends-of-Local-reputation"( K6 {( L. f! w* Z3 U6 R
set-current-plot-pen "Honest service". N% `; c3 }: I' U' E
end% U; f4 f0 G# y4 t$ H* Z$ j! @

! a2 ]4 T' t. C) C, Z( D, @+ k[ 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.& \! m0 n) c0 {# b' C
: O& h( L5 j1 i" h" I: ~& X( {
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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