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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:
+ L& y! A5 v" Y6 ~# @: |/ {5 eto do-business 6 M4 {6 o0 L" d. O  o) O9 t
rt random 3608 `! J' }- Y$ M$ y1 N  h, `
fd 13 K% H. e6 g$ U6 J
ifelse(other turtles-here != nobody)[8 i' ]' q6 p5 I  I" S
   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 Z3 N/ A' f8 b6 V& B  d' R* h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- }+ ~* a9 E- G( ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' B7 t; M2 ?1 k
   set [trade-record-one-len] of self length [trade-record-one] of self
5 X. C* u3 ^3 n) Z; s  L/ G   set trade-record-current( list (timer) (random money-upper-limit))& j& n7 V  l. e! N) p6 @

% z: Q+ a3 a. \' P- _/ o6 ?0 m% l问题的提示如下:
3 |3 s/ M7 G2 Z2 U, ^' w, A
& m% x+ W# O5 T0 }3 ^8 H" n- o/ |) H; Xerror while turtle 50 running OF in procedure DO-BUSINESS0 w' P+ V+ E$ n: S, B4 N" p, R/ O4 i
  called by procedure GO
' _3 g% b2 ?* K# F0 I$ p& {( n" QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 S+ y6 E; ?+ T( J9 M2 [) b
(halted running of go)
2 b, t3 `$ f# ?# i& ]4 n0 l$ W) u% t* W+ X' |  ?3 s  ~( a) s! P2 v
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 E6 c; P1 b. `( x$ v& x
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# F$ u( f1 R3 Z# j0 U9 ^9 _
globals[
3 ]- T. x* |& K& M- J* @9 b# o: Mxmax
8 S) b1 W1 B- A0 _ymax2 O) V# V% {5 x$ B% u  `! I7 S
global-reputation-list7 W7 K. f7 ?: g: Y% B2 P
- I6 ?) |0 f% C$ r
;;
每一个turtle的全局声誉都存在此LIST
1 Q  Z- }4 a: k2 v. ~credibility-list* t7 X. E6 @, d+ h9 [2 T
;;
每一个turtle的评价可信度7 {) L/ s/ n) ^
honest-service
) M- _8 V* x- K& @unhonest-service! P% p* A% ^( q; {
oscillation% s% h$ M. b5 |( U
rand-dynamic6 C# Q. F! a0 A. ?
]1 |# \+ q6 a' T9 i
* ~# e% w2 C" [+ o, `
turtles-own[
/ O. w/ v. z2 I' Btrade-record-all
4 Y: c' x- c0 x3 a' L;;a list of lists,
trade-record-one组成
8 i+ x' x. v. \0 k9 ]- y4 Rtrade-record-one* n7 W4 R( w- j, o8 s! z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 d4 D: I% |3 c( o8 F* Y/ ?  H- p; D  b! Z$ a. a/ y
;;[
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]]. q4 r+ _, d: G" F7 z: g2 ]2 F% 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]8 H9 e6 D. G1 Y% ?
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* Q8 m0 s- H* P+ Q1 ], n
neighbor-total
8 c, K) l7 G+ j+ \6 @# A  ^7 F1 a;;
记录该turtle的邻居节点的数目
& ^( M2 d( y% @: H$ e3 J# R3 |( Ctrade-time1 B0 A/ \8 \3 w* T, d. l2 U9 f7 f
;;
当前发生交易的turtle的交易时间
3 L8 B9 d% Y8 I% @. Oappraise-give
6 H) ]% x: ]; Z* e# N: G;;
当前发生交易时给出的评价+ b! K: O( F, C% k2 V3 t& o+ D% f
appraise-receive5 T/ U" B- w9 K2 Z# f1 H0 G; {
;;
当前发生交易时收到的评价; b$ }: C' w6 ]8 l/ ?$ `7 K
appraise-time9 |& w/ L! M5 F& _, e
;;
当前发生交易时的评价时间
5 H6 `9 U  o0 x" G* i5 Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 T$ n8 o3 y$ J, @* Strade-times-total& w* o% t* C  w8 p! i$ f
;;
与当前turtle的交易总次数! q& s8 L% |/ z9 z
trade-money-total5 t, S6 u5 ]8 J: M( g* R9 z$ K' E
;;
与当前turtle的交易总金额8 R4 G/ j' E7 H3 M5 V4 q8 ~& S
local-reputation
2 B4 v. c5 T# k& i/ o6 aglobal-reputation7 h( K/ x3 i! p
credibility
9 o/ p/ y5 z( }; @7 _: b;;
评价可信度,每次交易后都需要更新
- @- E) g  Z7 Qcredibility-all+ J- r  [+ ^* M% B7 X
;;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
9 T) h% O+ _  L- n, G1 r& j( S& n
;;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
1 T0 Y- f/ K5 d, }, wcredibility-one( l, X/ Z' z4 r# {- D- a
;;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
% U8 j# V* @, q9 i& R, g; L" Y+ h3 Hglobal-proportion6 A/ A3 y  W7 T/ @9 f3 [
customer; l' k& o- r% j: V  G2 G/ E/ M
customer-no
2 |2 H" L' Z# o0 H' y8 Mtrust-ok
# z( w' z# J3 K5 |/ h& C$ ^trade-record-one-len;;trade-record-one的长度
. K5 X7 Q' ]8 a' P  v" |]
- z2 q/ S! T/ S" K. ^! `, y- N3 L# c% J' c& x
;;setup procedure; v  T" G7 ]7 _' ]# i8 @

6 u' W* [* a' bto setup
  W1 O  u$ M8 {6 s) H9 u9 w! ?- D; h; k- L
ca
; A. @( P! J4 W- B1 R+ A
0 X; `0 `2 X7 ?9 A- q8 f
initialize-settings
& W5 @4 h4 b' q  B0 @
6 y& ?' z9 T/ J/ c# g
crt people [setup-turtles]

3 a5 x4 L( z/ e1 m; q8 @! m5 z* c8 [! J& b# d6 e0 m; [( L: R
reset-timer
; Q2 e4 F( h* H! L* X
0 _) w0 n# [! M6 n! B
poll-class
8 {% C. a1 [! {
7 R2 Z9 q8 G5 B4 K/ a' }+ a5 r9 }
setup-plots
% k+ Z7 X( O1 ?: j3 V! [

' f9 w' n* \  k$ x) z  }+ N3 c+ hdo-plots

6 v4 \& d! U" F# l; [2 Aend
# n& I, a( V3 N1 [& `, ^7 H$ C7 {* @- o$ Z. m
to initialize-settings
4 ]9 e1 {$ h( A8 d" Y
0 [! L& B8 {+ y& g" p2 g4 H& A8 Aset global-reputation-list []

0 I7 [) z/ n4 T3 M5 C! |( c, ^7 k# M6 j$ O- C
set credibility-list n-values people [0.5]

2 m, g2 _' \9 N, y; k5 e  D. m# M! `! ~2 G
set honest-service 0

( w  v/ ~/ f3 w& N2 k. V: e) b' _: j. R/ h9 Z0 j( L
set unhonest-service 0

% N0 A2 ^8 z! a& C2 `8 X- X9 k* h2 d, f( Y  F
set oscillation 0
; z2 y) \% n+ s; l# ~

9 O$ ?( }! Y- \, bset rand-dynamic 0
# Q) `! D9 [6 _- L
end8 I) T! s: d$ f5 [2 h
. i& x/ R$ a$ l" i" w( {
to setup-turtles " p7 w5 [& l; f4 Q2 G9 N, P# x
set shape "person"
9 K$ C1 E4 t: Xsetxy random-xcor random-ycor
0 h- O, p9 ~( O# l) [set trade-record-one []+ k4 d# y2 J' T. P

4 \, h. j" T9 V7 ]. yset trade-record-all n-values people [(list (? + 1) 0 0)]
9 c3 d  d& B2 @& G, c

( i& t! l  F) l8 w& F% t4 U: e3 tset trade-record-current []4 Q2 k# g) T; F8 q) R( ^$ z4 V1 p
set credibility-receive []
( z1 n, g2 g, P. {set local-reputation 0.5
/ i) }; y" O, N: D- ^set neighbor-total 0
0 @/ r2 p4 q: x6 jset trade-times-total 0* y( q  V& B3 v; d' m5 L# w( q, M
set trade-money-total 00 y3 g' l# W9 r, R/ @
set customer nobody
8 w6 @9 [3 p# Lset credibility-all n-values people [creat-credibility]
4 U/ D3 S! z8 gset credibility n-values people [-1]
. g- [7 r# q* M( w5 u/ f2 Nget-color
8 [5 Z9 j2 W* n3 Y, Q
- E% |; s0 A. {% r- q+ X2 h( ]- q0 H
end
. F3 C/ _( m: B
* [" n- H6 u5 Q1 \4 h) Eto-report creat-credibility/ \$ ~' L0 _8 {1 `# u7 L
report n-values people [0.5]
& K, E( X! b- }) v) @end
7 x8 s4 E: V, z# G7 k4 L
- _4 _2 `( O- U# |6 bto setup-plots
5 F+ g% f1 J. V; ]
" H7 `5 L8 Z% ?set xmax 30

: P# d, S4 m0 s. H
' q- l8 @0 ?$ B$ f' s. Zset ymax 1.0
( Y7 E! ~. |  ?3 c( _8 d
" Y5 z5 q) Q/ a6 G. L: G
clear-all-plots

) z) f0 x: p, u3 P+ e6 }$ \, H7 A# y( Y
setup-plot1

& v- x, ]3 l6 b" x+ @- Q. d" P
0 \$ [; r/ s- q1 l1 ]! {7 rsetup-plot2

# O: y' ?0 e0 k7 T1 _, P
) w- ?* O  j1 ?+ M+ n! ]+ v$ Fsetup-plot3
7 S" @' u3 A) M" |: {& @  v
end
. K# Z' _( w( Y7 @5 \  o
. W. U! f. A$ C$ |& D, y2 T;;run time procedures8 F' h5 H8 X7 ^" w- X
0 K& k1 f6 _3 h
to go( O) j% q. y. N: e

+ Z9 A( I! V' [/ B) mask turtles [do-business]

+ \; ~7 z9 b8 g/ \' A" I/ ], Aend
) x' l( X& T( h$ T1 W0 t4 t" m' Y4 r$ g4 A
to do-business
& O( H; g! }# |

0 i2 Y+ C% z& L, j& H! m5 S1 B6 q/ `$ I4 R5 E
rt random 360

- O2 R- @$ g9 l$ b6 d% ~, F( Z  c$ u; O1 e) m: V  {/ F
fd 1
. E% u$ d5 O1 O3 U9 X0 H; X' \6 e
$ N& x7 y* z' k1 R( `7 O
ifelse(other turtles-here != nobody)[

4 |! X, R9 K4 U5 l( |6 X3 Z. L
5 t0 J7 y$ _$ V9 F% w% Bset customer one-of other turtles-here
& w4 Y5 h( b8 @8 Z
, k* k( z. p# J7 Z
;; set [customer] of customer myself
4 M% f% v3 s2 _# p
/ K  z! i3 E+ u6 A3 W: i" p
set [trade-record-one] of self item (([who] of customer) - 1)
- `) N: X/ T4 x2 h[trade-record-all]of self
/ x& o% W: g# U; k" R( H0 k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( f2 q4 z, f" {% T' K$ X9 p

3 e1 D: \) u* [/ b$ R7 Y9 L! nset [trade-record-one] of customer item (([who] of self) - 1)# F- t4 M1 H/ ^# W# B- h. Q
[trade-record-all]of customer
, f" B' k# P3 ^% `

4 |( Y: b# z8 P4 I( }2 Wset [trade-record-one-len] of self length [trade-record-one] of self
: U; U; [6 Y0 m; r5 z# J: C

$ R6 Y, y3 p6 x% z7 G5 m* F! _set trade-record-current( list (timer) (random money-upper-limit))

/ ]* j2 y) l8 C* Y9 \1 w( d' v5 S9 y
ask self [do-trust]
" v, u% j% }  X8 g, \. ~3 v;;
先求ij的信任度
4 H6 P# g5 P+ i  w
" J3 k8 [+ h7 G& I- s# o# Dif ([trust-ok] of self); L* ]" G' W1 W5 p, y
;;
根据ij的信任度来决定是否与j进行交易[
9 E) `* V9 C0 _8 n- b1 Z1 Dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 o( f( t9 x- g/ s* d' i$ Z' @; q
% G- G& n' T4 \% w& F# X) q/ {[

; c/ D7 A+ r6 C; U1 F, _4 H9 ~. c1 @- Y( B0 J  e
do-trade

, L' n; h7 v- g$ D2 E( {4 c
& U4 Y) s9 w) `& U( Uupdate-credibility-ijl
# V/ _& t/ W; U1 c8 B9 S7 @
" `$ O8 ]. N' u$ c2 x
update-credibility-list
' v$ i1 @7 F8 P& h( i4 k+ `
3 i" q3 v5 a; J0 G1 k. A6 Y
" F1 g! \) w" Q) b, ~$ m1 y6 O4 `2 ?! b
update-global-reputation-list
4 |* P! I' j/ |! ]  I5 `
8 d) y# H+ H: h
poll-class

! f, e: R6 ~3 o8 c" e: O- E+ {! L% b5 u  X
get-color
0 Y) `/ E" P6 v1 c1 p
' v6 ^, V: M( d- i
]]
2 p% J1 y% h$ C/ g# K1 v7 Y/ f
4 N( Q9 c' E, s& u% B4 ~;;
如果所得的信任度满足条件,则进行交易
' d8 k/ P7 B" F6 `% G9 @
+ l9 o5 I1 C9 |. t: u! [[
0 I0 Y& o2 c& d/ ~1 O+ ]9 P

7 h& Q2 k/ H" T) l, d1 prt random 360
9 n- e# [* @. h* l) k( `0 Z

" k; \9 q' K* p% [% v" ^6 Rfd 1

  R. G4 G" D# q2 p; R) x& [5 o5 F, ~$ ?, F- [( p! M5 F
]

0 z: t$ f$ Q3 X$ c+ I! l
; L0 U5 b7 a  f9 c( ?end

) g/ q9 j5 s' s! O0 K: {# U: k' M8 r: ?3 p8 k
to do-trust $ s# K6 H* v0 x( v2 k
set trust-ok False
7 S8 C$ t# a5 B; d4 G
: I" N9 U0 p5 r! [# G

- I4 V' p" f+ A1 S3 A* Tlet max-trade-times 0
6 i  y5 S; [# ~" t; q* lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: P' K# ^, d/ C
let max-trade-money 08 W8 p9 x8 M7 b8 ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% k* N# z- _  K* `4 v( `, [4 a
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 \9 B" q! F/ ?

) a# Q( `; l0 j1 G3 _% x

7 V+ @4 y! a  Cget-global-proportion
( ^+ ^- c5 W# ~0 H! u# d& i8 Xlet trust-value
# n7 E4 ^5 ~- n- J& glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: ^" q0 M) W# P4 ~: d/ Qif(trust-value > trade-trust-value)
" ~8 z# X6 u( A% ?[set trust-ok true]
& H3 p$ Q4 O& n: K( @end" d" q- n# Y$ X; _; T

; o9 g, l! J; p% s( ?6 sto get-global-proportion( m1 a. E7 @3 D$ a" {; F3 m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# h" q+ |! U8 C/ L. d4 ]5 n! n[set global-proportion 0]1 U. o4 U9 a* Z7 s
[let i 0
2 ^: ?) W0 y5 X2 jlet sum-money 0$ i# a* Y, j* Y2 R. H5 H
while[ i < people]$ ]+ i) H8 F3 M" K* U
[2 X% q0 Z1 ?4 }. N( x1 q
if( length (item i
5 N' G$ z! r6 `, T" H7 x, \1 L: @[trade-record-all] of customer) > 3 )
2 i( ?8 R* |. _# j/ J0 ?; B
[
8 w  n: a  _, S7 p, c2 Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 Z6 x& Q1 Z8 y" K* L9 W( [) c# j. I]- S5 q- L- u6 p+ {
]
) a( p) I) Z  M$ f; r5 f0 qlet j 0- k, a$ w, m; P. S
let note 01 p  r" b0 w- v3 _# l
while[ j < people]
1 }& j% e4 N% A[
% L8 `3 E7 ]: x; n! xif( length (item i
5 s# y& U; T' O4 k[trade-record-all] of customer) > 3 )

, r. I0 K  P! a- F  ~[
; J; }5 a: M" F# k& cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ ]+ O, j7 x! x5 \+ l7 `
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; E8 e4 n$ j8 j9 Y- Z% S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ [* i1 i9 Z& }' E# I]
( d4 \6 \" F$ s' a]8 D' L" ?4 f( [2 G
set global-proportion note2 k+ p; R9 t$ E0 T
]
* ?2 Q3 ^* h- \1 z4 U1 X; pend
( a9 P9 @  c5 p: r3 C6 S
2 `7 w" O; l6 w7 p- O* xto do-trade
7 P) K. z$ h+ w;;
这个过程实际上是给双方作出评价的过程9 j. _' h2 X3 _" F- F% x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  `5 M7 i# K- U  V: kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* \7 S2 B4 v3 J+ \; e7 {2 w: `set trade-record-current lput(timer) trade-record-current! B3 v* A8 ~) M3 P8 `' P) X* ?
;;
评价时间$ j" ^4 H) {1 d( l7 }
ask myself [
& o( F: G4 J6 h9 n4 J. l+ p! G2 k) jupdate-local-reputation% Q9 b6 [! K( g2 ^
set trade-record-current lput([local-reputation] of myself) trade-record-current+ [5 N1 R9 L: y1 A) X. u& E
]
6 Y8 ^6 @9 \7 i; m" X, Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; X5 u' |3 e6 X2 q;;
将此次交易的记录加入到trade-record-one6 f, V9 X/ e3 h# W, C: c! t7 f/ [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); y, T6 Z6 |& a
let note (item 2 trade-record-current )
4 K7 t$ B! b! ^- r! Cset trade-record-current5 L' H# K$ v1 u9 b& c+ e/ \: m7 }& Q
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ T9 s) _& b! u/ ]set trade-record-current
# W. z7 V  l# Q; u(replace-item 3 trade-record-current note)& O* M# ~, Y% l, B" `% t$ M$ v

5 c: y' U( v4 v7 _3 S

4 K8 z) ~: H8 [" uask customer [
+ t- U% v* x$ V+ Jupdate-local-reputation
1 Z- ?2 u$ V2 h# D9 h$ wset trade-record-current! X) A- a$ X5 c; ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ k/ I  {) j" \) P]
, [' I% c  u( J7 `% t1 s
7 o- O) w* {( K% t, c
0 O( w' Y" J- }: ^6 l# ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' H' `. D9 y; t2 f. Y. g) K8 Z" B
- M3 \" P& o! V; |! J# K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ P& f) I1 {: }9 R8 \7 L4 M5 O
;;
将此次交易的记录加入到customertrade-record-all4 i, e; ^& X3 X8 J: M: s' A: B
end9 k; |" m* C; g, j: E5 h! k2 G
6 w- n! P, P) k- u+ P% ]) g5 ?
to update-local-reputation
2 F! U" i0 l) V" @9 k) y7 r/ fset [trade-record-one-len] of myself length [trade-record-one] of myself
: V! ^2 y8 o6 V3 @- t- h( a( y2 r' m

" ~1 n5 W, @3 A5 @$ [;;if [trade-record-one-len] of myself > 3

% o) {0 ]7 s% Z% d3 aupdate-neighbor-total* D5 @8 O: l: Y* R
;;
更新邻居节点的数目,在此进行1 G8 {' ~( C( W5 M, Z7 D
let i 3/ v+ R2 P8 t( z' S. I/ j4 ~
let sum-time 0
5 [4 l/ t! L8 X2 ^% b, h4 X- awhile[i < [trade-record-one-len] of myself]
; x7 a9 P! |2 ?; q" Y, n" e[
9 U, z% U* L1 l4 y' e0 Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 p- i8 t* }, t7 j
set i, a5 U  }' j' X( l
( i + 1)

) Z, C4 @1 _4 |4 h8 B% V/ }6 X]
/ c$ ~5 t+ N6 `# m5 Wlet j 3
! K: [  ~! {: B. h/ W# Dlet sum-money 0' f' m) r- @2 Q9 l
while[j < [trade-record-one-len] of myself]9 {* W( G$ W3 [' W! f
[) c  {0 M- A9 V  ?4 i, X* L
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)# {7 M( P/ ^7 @3 c7 [) N; U
set j/ e& z  t2 t3 R
( j + 1)

' S+ F! a- e; p( V6 c. H]
9 \- f' f- w; Y* P) r) M4 Ulet k 3
) C7 p' `) R- S2 qlet power 0
! R4 z5 s  N6 g3 I" B  flet local 0
1 d! X6 c/ s. Vwhile [k <[trade-record-one-len] of myself]
! A, l3 T) [9 s* @# |/ \[
# j. o- K0 O7 n% x; @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)
' S; Z6 G4 [% W4 C$ Lset k (k + 1)2 i& z# ~" V! [( L
]* n5 U! U9 G) E, @  W7 d
set [local-reputation] of myself (local)
: X2 I# Y! @+ A$ T( \& ?end
* H8 m1 P( g) M1 p! V9 ^9 @& N/ p
& q! A7 s* E! C% D1 e+ X- a" xto update-neighbor-total% V( h$ Q5 Y$ _

7 p/ d5 }9 B, |( W. Y1 R, Y7 ~9 x0 dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ U3 o! o+ [! X: @; ~6 F
) s) K6 G4 @+ f

9 |$ ]/ P/ m( ?5 ]1 [6 S3 _end3 B  }2 U& M/ u0 ?

' m6 ~' c' F- _. Z  ~5 M: p1 sto update-credibility-ijl
' C0 x6 e; w2 t; H4 R9 m% n  [8 D9 x5 o3 x0 Y2 @0 c
;;
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。! Y" O& T5 ]6 b5 o$ c% @
let l 0
& ^/ l$ O4 V, H+ k8 nwhile[ l < people ]
+ q% z7 I* L7 t  v;;
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
+ ?' q2 Y' c* z* c) R6 s7 A# u[
3 C- u: z9 ]" O+ j; J# V/ K; s% xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 C& C- L6 a" O9 D0 vif (trade-record-one-j-l-len > 3)
. w' @. u: F7 [! R! I! q! b[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-one7 v5 D: e8 J# h& h  a) W, v
let i 3
6 n+ _! ~% V% h! Tlet sum-time 02 A% B! ~+ ?) g9 V
while[i < trade-record-one-len]0 n9 d+ c' F5 e, z# A; l
[
1 s8 J' H5 G  N4 f$ @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" ~! K8 N/ p3 s! o+ ]% Kset i
; E0 e  K2 n# N+ F$ T3 Q2 t( i + 1)
4 b. s1 m! V3 y# [9 Q
]" C- @; y3 q8 T( d, M" o! S
let credibility-i-j-l 0
: w; E' c) S$ h9 D9 o. M0 J, t;;i
评价(jjl的评价)
: e+ m6 P5 c' L7 ], plet j 3' A2 }# H/ S/ a0 d9 g* k
let k 4
9 e) Y1 e5 k0 A; S4 |2 ^  p! ?while[j < trade-record-one-len]
) `( {6 x# I0 y. x& k[1 j% G% w6 U1 C: E9 x( J2 [& Y
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
& z( z( g* t& K6 ~3 {- mset 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)
: I  o  P- U0 |- Lset j  ]  S9 c. E* T9 v& t! V
( j + 1)

' J3 W5 h4 S, `1 L% ?]
1 B. ]2 R: A+ u  o8 e, j" Gset [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 ))+ }' O8 k( b" ~" Z4 d3 u) o; w$ t

6 U4 a0 J3 |! @7 n/ k/ n" R" C5 l

$ f4 g( t4 }8 r+ z: Y, Alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ I3 e2 [- T0 L! b7 t% w* ~( p;;
及时更新il的评价质量的评价
4 R5 D$ j9 M  M9 H1 P+ O* Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ k2 q$ M- e/ g4 v- ~set l (l + 1)- _2 B) X" c$ w
]; Z) e+ c: h  w
end$ @6 c0 c* I0 }( Z6 g
  S, t' n' s6 _7 \' W
to update-credibility-list
8 S7 p2 l6 i1 B2 y1 V. Mlet i 0) n0 x* u/ o" `5 _2 ^" W+ h
while[i < people]
; M' x6 |3 `. k$ S  l! c[
: J$ n! O$ j0 W: b- W8 Q$ @; Xlet j 0, t; b$ I! L- G9 ~# _7 S% A  B
let note 0
: }2 r# u- a4 s7 Glet k 0) U3 G2 l& H* V5 z6 n3 `
;;
计作出过评价的邻居节点的数目! |- q, f& C, C
while[j < people]' P- Z2 W' d0 [" m0 E
[, X: ?- P2 P, A- u9 q7 k+ a" s3 J
if (item j( [credibility] of turtle (i + 1)) != -1)
7 ~! B- C/ T  w* C, M;;
判断是否给本turtle的评价质量做出过评价的节点
* t  d' {8 d' Q: Q% V[set note (note + item j ([credibility]of turtle (i + 1)))( o( J2 d) p/ f1 v5 Z
;;*(exp (-(people - 2)))/(people - 2))]
* Z5 F" e  w( M
set k (k + 1)) d0 l& D- p- N  Z% j: x! ?
]
6 m8 h5 M. J% e6 F( l+ ~9 {: R8 cset j (j + 1)
# \! e$ u3 q  |. P+ |]1 p3 x+ ?$ |" M0 P  l- r" K7 \. n
set note (note *(exp (- (1 / k)))/ k)- P* A8 l2 ]3 d2 E
set credibility-list (replace-item i credibility-list note)* b0 K; p7 ^! v$ D* |
set i (i + 1)' l' t( ~* u/ v
]; {% m% L$ e. t7 R' U
end
) h/ {3 y# ?6 m2 z. l' i
( `; _- u# |, A( Z: tto update-global-reputation-list
. E. |3 z$ C% H- w* W& |, Mlet j 09 t0 u/ h1 V$ i3 d3 g0 I
while[j < people]
. k0 ~) E& y3 A[" x9 ]0 j$ q1 K' j' d  o
let new 0
8 ]9 p0 m4 O* s. `7 g+ t1 Z;;
暂存新的一个全局声誉
. A# j0 Y8 X7 @2 Ilet i 04 q0 [1 t, u5 _; `9 d% z$ ^% _
let sum-money 0
0 [; ]6 y+ F7 e& m; Olet credibility-money 05 h, K5 h) H2 A8 J, A
while [i < people]
5 Q2 b! O' X' A% @. y[0 l1 ^4 ~1 q1 |- b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 m5 }$ F- e. Y) c1 H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" Y$ F3 L! X* Q3 }/ O  x; Fset i (i + 1)
  _2 I( j' e8 F" W$ W1 A. H# w. w]
( |7 ^( R( N) Q. X, }1 Elet k 0
: l" y6 t) U/ Y) t/ F+ }! Plet new1 0
+ ~9 t, z8 f/ Xwhile [k < people]
; F+ n: D$ I/ y0 f* d  ~[
: p! F1 v$ e" N  v+ U" Mset 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)$ {, C+ K. u. W6 t+ ^
set k (k + 1)
, z& a, u0 y9 Z. k# n8 F]8 `+ b0 N4 g6 V$ A- q4 n, t$ \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 o; c% m0 B; o3 |) G3 Nset global-reputation-list (replace-item j global-reputation-list new)
  \2 a1 y8 D& O2 _% |) Aset j (j + 1)3 S% u, y; _9 Z, G5 M. I
]6 X9 Q3 b+ S; u1 ^
end% a& H* t* N' [
% D- Q8 [# v1 i/ O: R; {+ H

& ~% }9 Z) y: T: |
  f! w$ X9 [4 N3 f2 hto get-color
+ ~7 F- _9 H) X; M3 h# }  C# }$ R  p3 x" L
set color blue

  d3 q, B( S* N2 S* M/ M. xend  G$ ]4 L4 K- w! n1 H( e2 U/ w

% z- d+ P' _" _& `to poll-class) W8 R! ~. l$ k8 N3 z
end2 x. B) D, b* f- i
; @& J1 w0 Q/ j) d0 h5 w% ?
to setup-plot1
: V+ q4 u/ Q+ @; d2 M& Z, X  m, d. R& K7 t2 ], e* L9 D! }' @
set-current-plot "Trends-of-Local-reputation"

! K! M) |" |8 v, ^
3 E2 [: r  n; C3 P& R( g' Qset-plot-x-range 0 xmax
$ j5 k' P4 y: ?
! H/ Z0 `) m' P6 e% q
set-plot-y-range 0.0 ymax
3 o0 ]; L( X2 B) ]/ q
end
$ D+ K( k8 i* |. I% l2 Z" Z
% I3 _3 C% w: s* Ito setup-plot2. W, c8 Z0 A5 V8 V* ~

/ f0 i+ y! k6 s( w6 Pset-current-plot "Trends-of-global-reputation"
# Y8 _1 R! k9 i- d% E5 K
: _. L4 L) T& s# d+ f) r; x" r: E
set-plot-x-range 0 xmax
" R5 Y/ S+ Y- g  v# F% q. `

/ I) J  P  g+ o% p8 }) nset-plot-y-range 0.0 ymax
7 ^% L; K6 H* B& S7 O
end
$ K8 u, }4 T3 l/ {: C! z5 ]( ~7 Y# A$ W  X+ G
to setup-plot3
9 h8 G2 d! B1 ?& d1 N1 F8 X5 @5 u  K3 |7 x& c5 G: E0 S
set-current-plot "Trends-of-credibility"

( r0 q) m; z$ x$ A& {+ g% d9 t
; q: K6 I% c8 @, F4 y  Eset-plot-x-range 0 xmax
6 n& V! y: m7 w4 X
- ~# h- q, q- H. [4 t' N
set-plot-y-range 0.0 ymax
  N" l) m" A+ u4 `' c: J9 A
end
, x# k8 O" d/ z% f& d$ E/ d" P5 h" H5 T* s
to do-plots
8 X4 l$ V, j. i, \8 Sset-current-plot "Trends-of-Local-reputation") d* k3 _" {4 S/ H$ s3 T- Y
set-current-plot-pen "Honest service"8 X& b" C  H4 L& u9 h: _
end$ F9 t0 d8 r) _4 D: R1 r) V
; r; O* n4 c8 Q$ B4 P/ Q7 q( ^+ L% [% O
[ 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" B5 H0 n3 i0 U" L" B
/ E+ P7 u0 L" 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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