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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:( z8 @$ l2 t9 e6 ]
to do-business
, ?) i! [. L. \+ _5 @, b rt random 360
( A' I- [' Y7 @ fd 1
! Y: S+ b' R( o  z, [% \ ifelse(other turtles-here != nobody)[( E( v2 n. q* a$ C7 v0 H
   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.) J$ i  `0 ]) u& U9 }6 U$ k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& t: Y& T) c+ v! Q  l4 H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ Z, G" t  [, d! d; Y& U2 C
   set [trade-record-one-len] of self length [trade-record-one] of self" _# x) Y/ `6 N2 [  U5 k( {
   set trade-record-current( list (timer) (random money-upper-limit)). T1 o" E: P6 q" N9 V

* p; j7 w( F5 k% L问题的提示如下:, y$ D* n. ], B, j
, k$ b0 @0 I; C8 [+ ^1 A9 s1 A* l
error while turtle 50 running OF in procedure DO-BUSINESS
4 X; v4 N4 u1 o* R" s% S. ?  called by procedure GO2 O. |7 i$ g  r: X' m/ [. R
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 _) ~2 ]1 @& I& ^$ L
(halted running of go)
4 k3 c: \+ M% I. T8 W" k
* l. {2 t$ _1 w8 s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~~
9 f" K: U6 x$ p3 [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
/ N8 E) s. {. Q- T% Zglobals[( }8 F; ~+ W1 j) C* s
xmax7 a$ q3 _; ]) Q5 t: o0 r
ymax
1 B5 `# k" A* S8 Y  l. ?3 j- [global-reputation-list
2 ]( j) y9 J: J- H2 y7 z" ?. w& p' a# o5 A. e
;;
每一个turtle的全局声誉都存在此LIST
6 d" a6 g% r& f% mcredibility-list
% G4 g& M/ O" F2 t( V;;
每一个turtle的评价可信度! E  \+ e" |5 i
honest-service
+ d) S* G) S' B+ s5 r8 a9 Kunhonest-service
( Q4 Y& O! x7 I. {) poscillation
2 p8 m+ y7 g% H3 c% brand-dynamic
! G1 L2 A% R, L9 M]
+ s. G' l) P- s) _) ~
% R2 f. m4 @! w/ W$ n$ |/ K7 Wturtles-own[; K+ A' Q# U5 u( p! B0 U
trade-record-all: T2 {( r1 _: |4 S
;;a list of lists,
trade-record-one组成
8 p/ e8 ^3 W0 C8 I7 ntrade-record-one
; o) C% K& F) C! M0 b$ @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 y' P4 b0 a( _0 b6 m' ~3 G( B
;;[
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]]" d7 _6 t7 B* Q5 l3 S
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]- D4 m9 V$ |- ?3 l& w# }1 }
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. e" ~2 w: |/ I& l6 ]9 S# V
neighbor-total* q) L* `% N8 y# K
;;
记录该turtle的邻居节点的数目; `7 r2 |! x4 Z' H0 r5 t
trade-time0 R7 @" A- d: W( D
;;
当前发生交易的turtle的交易时间% W, w% T( P5 B! R$ Y3 [: a# T
appraise-give
! }- H& K5 p" b# g* k% i;;
当前发生交易时给出的评价/ u# j. Q9 F1 S" j' L5 p; y
appraise-receive
1 v" S, P, ~9 ~;;
当前发生交易时收到的评价
7 }! d! r3 C2 F" Q. Cappraise-time5 t" s4 |6 N8 D
;;
当前发生交易时的评价时间
4 C! q) n! o# }local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ q- u6 O, ?' j/ v: ?2 ptrade-times-total2 W5 T: U$ U9 C8 v6 P- Y1 G/ {/ t) u
;;
与当前turtle的交易总次数6 K4 z5 ~2 O8 c. D4 h" \9 N
trade-money-total
) |/ A; N1 U7 s) u) y- d;;
与当前turtle的交易总金额# B# L* N! B6 T4 o# K  C
local-reputation
& C3 ~" h- v& K5 y  p  uglobal-reputation
  w1 s) }0 H% s! G: h+ ^credibility
; X9 S. [3 L0 x4 a;;
评价可信度,每次交易后都需要更新+ G  z/ {# V/ B
credibility-all5 k9 K6 C% h/ [  _& @& b
;;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: H$ p7 l) o* ^* b9 R8 n
! d% Z2 g1 t; ?; j
;;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( Z) J# K+ B4 F. q
credibility-one
* F4 J, _) P+ v;;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
* |+ ^* f9 R. M0 t7 V+ tglobal-proportion
3 w2 @/ \" m- E. l' K- m, ^2 Acustomer9 \/ p& X$ v% L$ }8 S$ }
customer-no5 k) u' x4 _' u/ _1 A+ D* x- V4 s- u
trust-ok% c4 N4 B4 B: v- o
trade-record-one-len;;trade-record-one的长度
5 E1 t. R7 g- F6 p+ v# D]" Z# z5 t% e+ f4 e3 f8 H3 D5 Q. P, S

4 n0 a  H) q- E) t2 _; y0 h$ ^;;setup procedure
' g+ }" I& @+ u
: z, \7 r; h  m+ Eto setup: x- P* E; m. K" g+ |$ j

: S2 X6 J5 b; z3 j7 {, m. pca

; g0 \4 q' R* j, m) ^' F# L- `' o( t( P% m8 h1 S& P
initialize-settings
* F  t$ b5 k% G% a% ?! ^/ C
/ a- L5 W. |$ N
crt people [setup-turtles]
3 ~  r9 ~# \5 s3 n
2 W  X/ H" F7 [( h
reset-timer
- t. g% \6 \' C& ?2 C& t
& n9 o" E/ k& W) C1 k
poll-class

9 h, Q8 j/ E1 u' N) E6 q4 V) o/ a- ^+ W1 J8 Q) H8 r/ Q
setup-plots
0 M; t% q. J, d4 P* o0 N
# C8 s# I2 x# @& P3 Y; a: B: E
do-plots
9 _+ {' W: l- E0 @1 ]7 \' P7 B
end+ t7 r$ D- |3 `9 Q% m8 N

( C7 u8 r2 }  Rto initialize-settings
3 r  `, R9 p2 L& S
) N. B  d; F& g0 F; b! Lset global-reputation-list []
+ ?" \0 r% {$ D: {3 D2 L
- z' V& D% Z# i. K. B' c2 T
set credibility-list n-values people [0.5]

: `7 o/ i5 e) H2 t8 R& S9 m; T! q
8 ]) B* [. Z+ a1 L5 R. eset honest-service 0

/ W+ r! }5 k* P" F
3 D: _# O( ?1 D6 m- A& [set unhonest-service 0
+ B3 M; [) `3 K3 G" t

+ H+ ^0 U1 n1 \8 n* Z7 ]- P- |set oscillation 0
: k; B+ ?2 ]8 }3 A

( n/ H5 G% [% p7 L5 Tset rand-dynamic 0
. f8 z2 V; e0 w! A5 ~* i7 s
end/ o( Y9 S4 G# \& l
7 [7 H: m0 l  W0 Q7 t# x  T
to setup-turtles 4 L& y5 H1 H% E/ e" |! {* d
set shape "person"" W2 {% Q9 ^; a7 L
setxy random-xcor random-ycor% K  ^; j1 r" `; f
set trade-record-one []- `! E! ?6 r( n( `

4 x5 V1 s& P: h  _3 w  [set trade-record-all n-values people [(list (? + 1) 0 0)]
! G% I. a/ C" B2 D
+ ^0 c. r/ a/ t& N
set trade-record-current []
: D" b( w3 d( Q6 A, s& }set credibility-receive []6 v$ a0 i: @. I6 P
set local-reputation 0.5( X$ r: F* S: y- x9 _3 [
set neighbor-total 0
* W$ T/ O% X: r) Z# x1 d9 ]set trade-times-total 0
8 o: @0 m6 C1 l( Pset trade-money-total 0
* Y  u. w9 y+ S$ Q7 |set customer nobody
: c, j1 X; o+ A) r5 l1 \$ Qset credibility-all n-values people [creat-credibility]2 N4 J1 m* M: l7 i8 I& N
set credibility n-values people [-1]
5 r4 S! ^7 A" c+ D; ]: D. Zget-color
; k) z: k& F# l1 b7 P* c/ K

& n4 }& B- d4 {4 w  J  s8 dend
2 \3 U2 w9 `: m' d+ r
. y4 [& U5 ~! u. n! Z" V' oto-report creat-credibility& g) b8 h. E4 `4 }; S, X$ N
report n-values people [0.5]# a9 q3 G0 J0 A9 B
end
4 L- G  t9 B5 k% Z) C' w1 i- |
  n9 ?. I, A. yto setup-plots5 V/ o+ l' X7 j* H
# D& X4 @5 m, [3 i
set xmax 30
8 s, p4 a0 {& m1 a: [

: j$ O' I) k! q. W) tset ymax 1.0
( y" p  b9 }: C, |# Y" Z
+ g/ S$ g8 m/ f2 U# c- @+ P' g
clear-all-plots
' D% }$ ?# Y4 {$ a& H, V- C1 `- R7 ~5 D

6 X/ E! p+ a4 _; k  L7 Csetup-plot1
; S9 N* |) `6 @  q' U9 Z
: X/ Z' K5 A$ M/ g, a$ A
setup-plot2

, }6 Y8 t; J; B8 |2 d7 H9 ]. d, {& E, h! Z( ^) s( d8 e" }
setup-plot3
# Z8 c4 q# t# w" N. `8 ~3 e$ W
end, c8 b; h/ N" w
( ]' k: Y6 O* c$ T% ^4 ?
;;run time procedures
3 Z$ }$ j: a+ A) u$ H4 p4 `' p# x5 i8 }% _4 L0 ^$ r
to go
- a0 ?: r% L% a1 }; I: j( V
' d7 K+ M6 x6 d; V% f, vask turtles [do-business]

8 ~# C1 Q/ K; L6 T- n7 wend4 s, H' y' C5 @" D7 T+ ~( M

; X' p* P6 l- w. |; Hto do-business
' V( R, E" R5 t/ h* k& T$ E% O
) I/ l- c4 U4 w5 p: I: T. b
; j; ?7 J' J$ ]1 y
rt random 360

- X' E! @+ }, b* [  K0 r: [% I; H
# u! S: D: W! F- P' x4 A7 ~fd 1

6 f. I3 f! X* p1 P
$ H- H( P; `/ @) j0 jifelse(other turtles-here != nobody)[

9 m& j9 B( \  p5 N  P" h' w: D% D3 g* z0 P+ V
set customer one-of other turtles-here
4 d5 F' q% U* Y

, I7 I" C. ^( ]' V! ]# m8 u' _;; set [customer] of customer myself

" g7 o+ L* x% ]5 t1 ?& N' V4 g9 ~; J. e% M! [" z
set [trade-record-one] of self item (([who] of customer) - 1)
5 ]; t3 u4 ^5 Y  [  \3 d, j[trade-record-all]of self; n9 j4 s( E0 ]) |2 e& G2 I  c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- |/ o% O1 Z3 O8 d7 r
0 c" h$ S/ z) i, e! V0 Uset [trade-record-one] of customer item (([who] of self) - 1)% W5 d0 k+ N" g$ ^) f+ d0 n. L1 n  G& C
[trade-record-all]of customer

' w% B0 f$ H/ Y' U# Z0 N3 S* _$ R+ Q4 |; C5 C) R) {
set [trade-record-one-len] of self length [trade-record-one] of self

( {; Y3 W0 U% Q" D
9 N1 s7 _' E/ o, A: T+ @set trade-record-current( list (timer) (random money-upper-limit))
* E: y6 h4 \, A5 o1 M! |

# j" O1 N+ _+ a7 F4 h: s/ L, vask self [do-trust]
2 A, [1 @1 q& ~- X;;
先求ij的信任度
" Q- c1 U4 ?7 n7 Q' p, j8 P& p# M, d! k* i( p- D: |; h
if ([trust-ok] of self)  p! }' m0 F# @% Q3 d3 d% Q
;;
根据ij的信任度来决定是否与j进行交易[
# B; |" y  |2 W- d: sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. @: H! p- ^- N5 z# H$ l/ {# c' N! B, v: A4 x
[

4 a# R! i& R$ d5 M5 O; N5 i
( H  B1 v4 Y# Z& f6 {% V: fdo-trade
. R$ w+ j* x4 X' @1 V, G

( P# j* O0 v3 C  x/ g& Dupdate-credibility-ijl

/ |4 ~9 G5 i0 ?. i
2 v0 F7 z; c0 T+ Fupdate-credibility-list
7 c5 K3 D7 c5 N) k( r
8 s% o3 U2 t( s3 {
. e3 k7 m/ E" C, w
update-global-reputation-list

1 O3 {2 g. ~' h+ z$ T
9 T$ z0 y1 n" d+ I6 wpoll-class

/ B! _5 P7 G4 P. t; s3 e) S$ X! \# \! c+ ^) ]+ ]: s
get-color
, l0 Q/ S! w4 h& Q" d+ `* u  ^" Q

5 C# ~; W2 ^5 F]]
: W( r; Y9 F  E/ V* o. ]
' F0 a, [& `' E3 u# N3 F;;
如果所得的信任度满足条件,则进行交易( z0 p) J, q7 ^1 E: s
8 ?% @5 G2 V& a
[
9 n. ]* [/ I! K3 h$ K' ]
- E) B6 `# _! L  u( Q
rt random 360

5 W+ G( R- y0 ~
' i' y: a5 q+ q# y  `fd 1

. W* o: D3 c; M
) `- Z, L* e1 O. a- D! Z6 V7 P$ r]

9 p' k, `% U5 \$ X! b- i
7 R6 I/ S/ c0 n/ Y  _% m$ O! cend
; R: _) }( ]5 y) O
7 a# a8 c" E& ]( l. J' D5 T
to do-trust
/ b/ O% v' L- j, m# Vset trust-ok False. q& \/ @" [/ t& ~4 d# b

2 @' E( a8 V3 S9 |! n( N

( w, s$ O$ U7 P6 ]let max-trade-times 0' {0 {) G# \0 q4 m  f2 D+ y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 Y; p1 J: b4 b: u' Olet max-trade-money 0+ l* W6 S% g+ A5 g! w5 }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! r: d. C) @( w  U2 @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" P0 U- K, D! J0 ]% v; p8 W1 H% }% F3 O9 b% k0 R
) Z1 J! _( J9 f. g( {
get-global-proportion  W* x, I6 A! c; Z7 M  ^
let trust-value' C1 `" E) k) A2 g$ j* w' o
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)
- Q7 M# A* H2 Z9 D
if(trust-value > trade-trust-value)! T3 t$ |4 e" e4 E7 B
[set trust-ok true]& B8 O4 D8 v  Z- _
end
6 ^! f$ j$ E' \* ~5 V0 v
0 o& {: {% a- v1 E" o) E! Hto get-global-proportion
3 P/ L; E: `. j5 ^+ Q6 iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  F7 C6 k" A9 A6 g) v, B
[set global-proportion 0]4 _% P. ~  Q$ F% t$ z1 q
[let i 0
1 p  w( U; b% J# V$ F0 nlet sum-money 0
9 X  @! d3 A5 I) Q* K& bwhile[ i < people], H( Y6 @* G/ o/ \
[
  ?$ k, K. Y4 W0 {/ Qif( length (item i
' j9 ]  t" r  S( [* y[trade-record-all] of customer) > 3 )
6 q+ d+ i8 v* i6 I. ?
[
' h: P! p5 {1 }6 F% j- dset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), G: p3 u  X2 ]5 t" F: c7 A
]$ q+ O6 @7 b' s5 b
]# K% A( n/ u' F1 ^1 M
let j 0
+ r9 k  ^- o7 m! G$ U' k" Blet note 0
) ~- P4 W3 z9 R8 P; q& Uwhile[ j < people]2 j6 h% l& @/ [- m1 c: t
[
- b* U6 r( ?5 x5 X7 S$ p% eif( length (item i8 }% _/ S" m" u3 H/ E
[trade-record-all] of customer) > 3 )

  y4 w  D: s4 F* q; `; g[
* n+ _- C% M2 e' sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* N3 v5 @$ d+ U7 u* a' o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ Q+ w) W& |& \9 u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 ?0 L& S: y: t, {6 {% q
]" |9 z6 b. j2 w) j& P
]2 K* z. g- ]- I. f# y
set global-proportion note
/ `/ u& w. z2 z+ j5 y; q]
" A0 ~( j) `. p1 uend0 ~' y. {. j7 v# }- L. S

4 x% S$ G; U% l* Q( Oto do-trade, p; d6 G' z' k
;;
这个过程实际上是给双方作出评价的过程
+ |7 G7 M( V8 C' ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 l) d" z! Y2 Z5 ]5 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; \$ [0 {+ C- _( iset trade-record-current lput(timer) trade-record-current
- Z) Y5 I& z$ H4 a;;
评价时间1 O" p+ A! W$ C6 M" P
ask myself [
) z) D0 c2 x' r% V" cupdate-local-reputation+ m1 @% _  j+ Y1 W
set trade-record-current lput([local-reputation] of myself) trade-record-current& j, r9 I5 p, j
]& u, f0 E8 C# W, Q" F
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 |/ W1 n0 E  T
;;
将此次交易的记录加入到trade-record-one) w* x# C- X9 p9 r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, a  {6 S8 c: Xlet note (item 2 trade-record-current )7 Y9 \) S# a  H* A4 j+ B7 D2 ~4 a7 ~
set trade-record-current# S  N: z4 i0 D6 H0 D0 e1 m
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 ~1 R9 U4 m& Gset trade-record-current% r1 p! _  I9 `+ p3 }
(replace-item 3 trade-record-current note)
  s3 Z6 P% j7 L3 E
# n6 {$ o' i  s# _( X: ^4 K
2 W$ y/ M8 L4 b, E
ask customer [
1 J0 g( P9 n; F% `+ Gupdate-local-reputation3 H4 }1 k: q7 a
set trade-record-current+ g, b9 H8 m. U) _8 v  b' n9 c* X
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ q4 H  {2 m$ j: h+ ~4 G* U; Y
]
' Z* v2 S+ Y% V! B; z  [. E9 U8 K, E" r4 x# S* u1 l; u
# D: [( W8 S# W: T6 }/ g. C5 q$ \
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 B: C6 i- Q2 i
/ @, O3 x# N9 e, j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: ^1 i; d5 h) a3 B$ o5 v;;
将此次交易的记录加入到customertrade-record-all2 _. Q- E- [  F
end
" F( a1 l9 h7 X: ]) i5 G" H( |
to update-local-reputation5 }3 c$ S5 q9 Z& [( I$ X1 E
set [trade-record-one-len] of myself length [trade-record-one] of myself
, `9 z1 F  k0 j7 k! Q
9 V! ?! H5 Q' V; l8 w5 J! G
1 I% }0 {; ?3 i  z1 R;;if [trade-record-one-len] of myself > 3
4 X$ p; W% \2 B
update-neighbor-total7 i) R  A+ s1 E! Q
;;
更新邻居节点的数目,在此进行! r7 n; f1 H' z6 B+ E* Q$ W
let i 3
1 A# |' i, y6 j: h2 k3 x9 [2 }let sum-time 0
- ]! R5 X: l) ^! wwhile[i < [trade-record-one-len] of myself]1 |+ |- b) }; N. s
[
; R* c$ w9 y! w: xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: ?: v9 J& l, N" l; pset i; v2 e$ F& |. W9 L3 j# s
( i + 1)
$ c% V$ J6 Q$ C; C5 ^- Q4 d
]$ J% ^  M! T; h5 X4 ]6 \, p
let j 3- ~6 J1 P% S3 Q, H1 d# n1 p
let sum-money 0
4 \- c: |- r/ _: z: |* M9 M' {while[j < [trade-record-one-len] of myself]$ _+ }6 q" K2 a7 `
[
/ z% j( j2 X4 j. w7 \, Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time). ]6 G; Q, P) x7 V4 g+ \, ?+ R5 y
set j
! W; e1 N  L- h9 r) }  q, s( j + 1)

4 b$ s/ W5 N  _5 T* c# x% W; Q]
+ m% _* u! [- p4 u% A+ slet k 3
3 k2 i5 J- B) o7 v" wlet power 03 z0 D4 s+ e9 H0 J4 Q. f8 u
let local 0
- g# R5 L* F  K7 C8 nwhile [k <[trade-record-one-len] of myself]
+ f) ~% m7 S4 e: Y; X% ~" f4 j[% |9 B/ E4 H# }; k0 B
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) : v. G) ^( C# D/ @7 B
set k (k + 1)
$ [' C( e5 S! ]' x0 ^]
9 [/ M2 L$ G3 ~  `9 E: m3 qset [local-reputation] of myself (local)
% X, n# p- f8 pend
# V! h) X- w# N$ _1 P; q  `
* j1 v! j+ i" j+ `3 Xto update-neighbor-total
& S/ w! @; W; j! w
* \. t0 e9 x- oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. `( f, H' T9 h
* `, V, ?  B5 g0 y; Q6 S/ z" q1 p
  N/ l" m6 x2 _* _1 w. W' @& D
end7 |5 B% o5 K( |' R& B

# i) S! f9 e5 \/ C# `0 E) z9 Lto update-credibility-ijl % M7 ?! B7 [/ \( A7 l" k
. l, C( y- P1 k) 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。
9 D1 n1 S) `% T  Flet l 0
1 k- ^0 h* ?9 U, j( vwhile[ l < people ]. D0 N% P( y2 ?' C
;;
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: G5 H0 K" ]: F) o+ i3 X( c
[/ M' |7 i* E9 o" Z' b' F6 p" q) T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* _7 Z7 ?8 T& V& {: _0 v! _5 Kif (trade-record-one-j-l-len > 3)
0 D+ v( m! [( ^7 M, p7 K  P[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* K% x" n! O. g
let i 3. G* Y3 Y  s2 o: i9 u
let sum-time 08 B8 {6 b, m. ^8 e2 ^- |! i1 Q
while[i < trade-record-one-len]
0 [& I* w' Z( y8 d[
, J+ @: C% k* t: r7 w3 [) m* L4 s( }set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% t# X4 K. @& }' ^8 Eset i
# ^; z* a) i* _- [3 E% l( i + 1)
' @5 R+ R6 K$ m: ^
]
% {) W0 R2 `6 N' G3 hlet credibility-i-j-l 05 H! _9 P) H6 c2 O
;;i
评价(jjl的评价)
; K+ a# o/ u- V7 k. Z7 x6 L/ _let j 3
6 V( }4 ]6 y8 {- Vlet k 4) I; a7 {& k: Z3 A2 u: s
while[j < trade-record-one-len]1 O0 l4 @/ L% M7 }! z: n
[
$ u) j& x5 J3 ^9 Uwhile [((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 R0 ?2 U6 Q& P
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)
, _  @% f# D& H3 Vset j+ E, m1 W9 C( t! X5 ]( {/ |# u
( j + 1)

7 _6 Y* M- v* J+ _]# G5 S3 I0 m' ~' Y2 ~
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 ))
* G5 I3 }0 b; H& a0 c: Z( s! C. o( e3 ?/ H7 Y/ V

1 R) f+ o. V8 B) }8 m* C- Z% tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* d  i% v5 Q( m;;
及时更新il的评价质量的评价" f1 K" o$ o% o9 N) r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. b9 v- Q+ j! v4 {, t
set l (l + 1)
% C" P" U: z- J" M6 @& @5 P1 B) g]
' L+ R3 C) Q$ ^* ^end  o6 e0 y  [* N8 T
+ e$ C% z3 R+ e
to update-credibility-list7 h7 o% v$ r! S6 U; D6 q
let i 09 D5 b3 W# Z9 L* f
while[i < people]
& P+ s' B' @. {. u: G+ g[
! a& k1 e' `4 P3 Elet j 0
7 D) C  v6 _  M% K: {- Xlet note 0( |* e. y0 L( e: c( P6 p
let k 0
2 K3 f) C2 P4 ]( Z% R& W1 U;;
计作出过评价的邻居节点的数目- _. ]# ~  k$ _7 A  n4 T0 t
while[j < people]8 ^. Z& W2 V. ^+ ^. [6 q. o
[
" D- Y9 J( }/ I" V+ j0 Oif (item j( [credibility] of turtle (i + 1)) != -1)
0 b+ b* O- o, F3 J;;
判断是否给本turtle的评价质量做出过评价的节点
. f- D$ ^3 U0 M. @( c: S[set note (note + item j ([credibility]of turtle (i + 1)))
2 F# X1 X) \8 c. S$ X6 j;;*(exp (-(people - 2)))/(people - 2))]

& A& b/ K$ {4 ]% pset k (k + 1)9 T& ^0 o% R8 B
]
& e5 P. r$ I* n# Q0 Y- M  e' p% Y3 `set j (j + 1)" T( K$ A. Q+ t4 A. n* W9 R
]; y9 b# D/ _, ?# [' d
set note (note *(exp (- (1 / k)))/ k)
3 y# s, G0 c! i" f$ G8 K' pset credibility-list (replace-item i credibility-list note)" Z+ w3 |* {" C) G! i; [' c* y6 D
set i (i + 1)# E( x, m( [# l( F% B0 {
]
& g$ `. X5 p+ m3 j7 F7 ?end
- w. ]6 N3 }5 B2 L. S# Z5 j: M3 a, y- c4 {  i
to update-global-reputation-list
- g  V& G0 D( {# M) [let j 0
- H. h* e; h5 Lwhile[j < people]* v2 H4 p! R3 Y2 u
[$ U7 T. n6 A4 R' E# {- x8 C
let new 0
0 g8 X9 _) C  o, ^2 O;;
暂存新的一个全局声誉0 X% |8 }7 E: q3 m8 u
let i 0
% B; Z4 J* v5 B: Clet sum-money 02 W% N' _1 ]- M! _+ i
let credibility-money 0
0 c6 Q) O5 d/ B% X8 [+ q) rwhile [i < people]" N1 G9 v& l5 ?8 V3 x
[/ ^  R: a+ }6 N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 c, E* r9 ~; k6 x7 ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* k" K. g+ d- wset i (i + 1). W% O4 z5 B! }& Q3 M1 `
]- ~6 j" C$ v4 _  \+ N
let k 0! v" U' Q# E8 k1 F" X
let new1 0
0 s+ o6 C4 R! h5 F9 Y# k3 _: fwhile [k < people]
1 `$ B  [# s  d% R: M( y[6 G# ]  D8 ^5 {, ~( c& [& S; }6 h
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)- H0 i6 D3 q* G( m8 Q4 h" n# E& _3 A
set k (k + 1)
8 u% V9 `8 ?& I. F& Y6 u5 Q]
! l: r/ c" m  r4 wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( w/ d7 V: T1 |% A0 i0 Dset global-reputation-list (replace-item j global-reputation-list new)/ q& `' ^. s) H; ^0 w8 `) H
set j (j + 1)' M4 Y5 d* f' J
]
  @9 x9 ~; i+ z  u8 D4 k- jend7 b) ]$ E1 u' n4 E$ F7 V4 X
/ N" d9 ^9 m* }' t8 P

: q) U9 _6 g1 w' k3 @5 g
+ g5 V; t( z# Vto get-color
( o/ r4 |# o% f" j4 A3 s5 o  f% k
set color blue
+ y5 s- A. z& s8 L$ k; I
end
9 D9 ]  N0 D- s. O+ h' G) T
' |9 j7 ?  S4 w; Qto poll-class
. _- Z' Y. M5 j7 Q$ `' j; q  ^: o$ rend5 [/ T) q" A. b9 F

: {8 W, A0 N* u2 |to setup-plot1* a- A1 ^0 J1 _' A0 G/ g8 b

- l2 F7 L$ x# _; b# Kset-current-plot "Trends-of-Local-reputation"

: x. A( h1 Q* v. b) q2 n6 j, V9 v
set-plot-x-range 0 xmax

7 K0 }8 ^/ K& p' Y' v- p3 b0 |4 [+ \# `5 ]; @5 P6 A# m
set-plot-y-range 0.0 ymax
. c0 h/ p! G% e7 K
end2 M# G( M' t9 J7 A5 V$ }: K

! k2 k3 i' |' h& Eto setup-plot2$ {2 k3 @# l$ \4 D! S, Z
( x- X. G5 p5 J1 y5 i
set-current-plot "Trends-of-global-reputation"
6 w; J' d4 y$ }1 A9 L, N
1 V8 ?9 [1 a) o7 m
set-plot-x-range 0 xmax
% I) ~. z$ F) Z- B  L  W
. P5 x/ G9 O9 N# U' R$ v& `& Y
set-plot-y-range 0.0 ymax
1 {" ^% A+ Q+ }5 T5 B- a1 X
end
! a1 N2 {( p: `( L  o( q/ t4 a
' _: K4 x" l0 v. b2 A) gto setup-plot3
3 A7 b* A, t% s: }3 W1 X$ {( P1 ^6 t! m7 @4 d" @, Z* U
set-current-plot "Trends-of-credibility"
$ g8 q# |" F4 [
' q/ \+ s6 @% f) l. o$ `6 ~* s
set-plot-x-range 0 xmax

& T  v9 Q# \  \: h3 ^* c3 q8 z- D# p0 u7 x% B7 O; _
set-plot-y-range 0.0 ymax

0 {% D! Q2 e7 s# Cend
5 S+ o5 r& P" O8 V5 ~
4 r& |) t2 _' |6 g) N; Yto do-plots
+ ]; `3 X- w" ?( p' Yset-current-plot "Trends-of-Local-reputation"8 ]  G2 @+ v/ h, J' A# K
set-current-plot-pen "Honest service"# g" E0 p) H$ c' s' K- v" ?
end$ f% q9 b0 c7 R7 z' k. a! ]& X

) @4 r3 {- a6 l" ]& C2 N# ?[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
; `! a& N4 l7 ^* ^, Y  z/ N) O( q* z8 g. Q0 b
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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