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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:! U* S, [$ s" E1 t: X
to do-business 3 r) @4 t$ i; _7 S0 @
rt random 360
' x% k2 j# {2 u: ?- i/ x fd 1! h- C8 V9 o6 c' {6 E4 h# v8 ?0 Q& S: [
ifelse(other turtles-here != nobody)[0 h+ I  r9 m: k, D5 Y. p1 X
   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.
) j5 D% z) q6 B$ w3 m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + M% S4 A7 @! l2 g3 z% Z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 L5 n! k# g' U   set [trade-record-one-len] of self length [trade-record-one] of self
( j) b" ?1 ~: j& X( ~& V$ @# w   set trade-record-current( list (timer) (random money-upper-limit))6 S8 `$ ^& Z7 k7 j2 R# M. C
) h+ I- a7 G  J" A' f: @
问题的提示如下:6 Y/ v4 e( o( q) Z/ q

# A! q& g* s) t/ G. C2 P) g( u3 Z7 W( Merror while turtle 50 running OF in procedure DO-BUSINESS
( `9 r: J2 z7 s: J/ k& y  called by procedure GO4 }- v3 w) R, z& s) |# K( m
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' }$ W6 N$ w5 C
(halted running of go)
& c! {' f4 x" r: {: t
; s$ L& B: i9 i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~~
* G. k7 G8 ^9 _" T! K, d# Q! t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
" J1 T  U) h+ b$ C* o" m1 c$ nglobals[
" k  t# p) j  j2 r+ C& t% [xmax
# G; }& Y9 I0 K3 X+ p( g3 U1 y/ Q! N2 [ymax
- g0 [6 c9 R7 J9 g5 gglobal-reputation-list
+ K2 g/ U4 R" @! n4 M  S) w7 h! |# ]$ ^$ _3 @
;;
每一个turtle的全局声誉都存在此LIST
1 t; n: R  G9 `credibility-list2 F. C+ g% R4 i5 Y2 X
;;
每一个turtle的评价可信度$ H+ U3 J4 r# [0 {( y' L
honest-service( q) _3 [4 W7 H/ b$ y% N( {
unhonest-service
1 F1 b; ^' g6 W' S- ?0 koscillation4 h. |& J$ f+ z; k! `  a. \
rand-dynamic# ^* K" P, B/ S2 H- i0 d/ [
]
- Y  ]& q5 M' z2 y, W: c. T. A! C7 H5 _8 p6 r0 \  Y4 |
turtles-own[
* d; L& \9 C: k* y* W6 ?trade-record-all
- L/ Y% K9 I- f2 m- w3 a$ T! n;;a list of lists,
trade-record-one组成
) x1 p+ [0 ?2 Otrade-record-one
# Y( b% o( a7 s;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 J# s1 L( L! y7 Z  |+ k
4 d) U* d: R& b0 @/ C2 V/ 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]]7 w$ N) n$ q# Z
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]
. O8 ?  I9 ?# I8 r: Bcredibility-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
; P; _8 Z7 d  lneighbor-total2 |7 J0 ]5 j) V* S( }
;;
记录该turtle的邻居节点的数目
4 D6 e8 v. T' j  g9 R2 O3 X$ y; ftrade-time
3 I1 V$ h4 W: F;;
当前发生交易的turtle的交易时间
& I9 \- d- j$ Q5 Gappraise-give
. \* H+ n) l* r+ j;;
当前发生交易时给出的评价$ \; A6 P! \* e  j1 d4 I( v1 O
appraise-receive) ]* \, F1 h; G
;;
当前发生交易时收到的评价& u2 |) t# ^& k5 q% G
appraise-time
" g9 m4 u+ R+ `1 c;;
当前发生交易时的评价时间
- c# m! t4 G0 h9 U" n& vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 b. M  D$ {! i8 w, g- b
trade-times-total
4 C- K/ q3 S7 Y/ @& `- f) q9 U;;
与当前turtle的交易总次数
/ ?+ a1 S! F7 x. W7 f$ ltrade-money-total5 I, C2 l) \: J
;;
与当前turtle的交易总金额6 r* h' H, t0 F7 `5 s$ E$ z( L
local-reputation( \7 Q$ S0 W, N5 L2 _
global-reputation
) t, g5 l& {9 G. B1 Tcredibility
( E- S$ f7 }/ s8 J2 u;;
评价可信度,每次交易后都需要更新
" a- V7 {& q! w/ _. h% e- `; ucredibility-all
3 c2 z, T: Z3 Q! S;;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7 f$ E: T% K) L8 M# ~& t
: }$ A1 b7 r2 c7 I* I0 x
;;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# l3 F: {8 c! T" V2 L/ I
credibility-one/ V  L8 |3 F/ W6 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people6 R, v5 t$ b* n& ^( b" I
global-proportion
- A, Y. Q6 ]8 \4 u, m4 o9 G0 Fcustomer
* H1 U& l+ M* ^) kcustomer-no
' h) [8 k& |/ ]trust-ok# Q9 i0 x) b4 E9 Z* C" y' b
trade-record-one-len;;trade-record-one的长度
  o: }0 I  a' P, `) M]
; l1 f" Q2 P# V! w9 L4 i+ G% y
* W& ?9 g: k, m/ B( b;;setup procedure$ s( j  E% G; J) a5 u+ g

" }- ?- R( b2 K, O$ N$ b* i& k& mto setup9 ?% P! I7 O& e! k
! I& o! j  n" e0 }) N0 @
ca
# `- Y! E3 p2 a0 w
; e/ C$ A0 f; G- n
initialize-settings
  h# ?3 u  U, L$ d* z; F  o8 D
  V# m, g% V2 o
crt people [setup-turtles]

# R8 a5 J3 i) [0 P1 w1 q
1 b# I$ [# Z3 ]reset-timer

9 `) M6 X9 s& V- D& [1 U* o* }+ y! {
poll-class
1 _/ z: r- k: K4 E

9 P5 L/ o, q/ ^/ f" Psetup-plots

/ i3 ?2 U  c9 U
& i6 k8 }% z, L' }& vdo-plots

9 q: f0 l/ |; n* y4 uend
! @) F, s) @) P2 _2 C* [. K: b" C2 a5 I) V
to initialize-settings
. C0 T2 d3 m% m, @
/ P% L9 v2 D; hset global-reputation-list []

" A8 y$ W, N  ~* b) c/ Q2 H0 B$ d; b' L6 Z
set credibility-list n-values people [0.5]

. {- y& p2 n! ^. r+ v4 O7 h. }0 `6 \5 C. l% ^7 N0 ]$ d
set honest-service 0

* ?) l0 \# H4 p3 c$ m% L7 |1 q& D- |. i( Q9 }5 K  P
set unhonest-service 0
5 x1 {3 K5 C3 r3 p: q
! g* X/ N& O- {9 K: d* ?
set oscillation 0

; l+ v  T# V/ a# T7 d' n6 L0 V7 L* M9 n. T/ E8 S" R
set rand-dynamic 0
$ w$ J& s# D6 @
end9 j6 B3 V$ f- p5 M1 A$ ^' g

. k; Q* ^6 D4 {  C( {. lto setup-turtles
  h3 g! L! y, C7 S8 T1 yset shape "person"/ @! m( O; T" R5 K$ O
setxy random-xcor random-ycor' f# R9 X6 W& e- w4 z: ^$ ?
set trade-record-one []
7 f4 E) N0 E- H/ L2 l

5 y0 x; G9 A& t; P1 K, a  t6 [set trade-record-all n-values people [(list (? + 1) 0 0)] 5 h& p, M! f* e: d5 A& }4 a
2 s( V: I; l( Y! p' y& F; C" E" P
set trade-record-current []
+ R' z, k6 [% F& T% d6 v! i9 E0 fset credibility-receive []
2 T9 P2 L" v) n% n* _set local-reputation 0.5
5 f  A0 g% [0 Zset neighbor-total 08 D  A4 T9 w0 W9 s* ]4 A' t: M
set trade-times-total 0
- l7 ~% w1 F' w! oset trade-money-total 0# W' ~+ I9 x) x4 y# Q
set customer nobody
' E: g! I! n0 z! O2 r. \$ z) Vset credibility-all n-values people [creat-credibility]
3 D: M! S" Z8 Y5 Rset credibility n-values people [-1]
* `  Q4 Z$ J* U2 o( q; dget-color
* n5 k$ m, H3 `) m' i9 g* t

  e$ m8 r' H: mend
, j5 v. ^5 n3 \' K
: {5 U4 }& c3 C+ v% Xto-report creat-credibility) e9 Q+ s8 s. |5 w! N
report n-values people [0.5]8 b9 Z7 k5 x" u- ?& j
end
$ Z7 D/ e' I9 u7 i# W# G! I, {4 J% d' R2 ?
to setup-plots- A% F9 v1 P9 e1 f$ A
) m! v2 B8 E7 X( l6 e6 V
set xmax 30
4 P* o! F1 q* @* B0 B$ ^
3 \6 V1 A9 S& D7 m, A" g1 ~
set ymax 1.0
; p7 D- v5 s' U- S5 H
3 f9 W7 g* N' p
clear-all-plots
; G1 n2 g9 I- }  j+ ?
* U0 x0 G9 k# c9 O7 j4 ^) Y# _" A* t
setup-plot1
' M1 t; l  T$ n4 C+ E- M5 l+ }. Z
* U+ S3 b9 w  t$ r) R
setup-plot2

5 I3 ]9 l9 I- |, m/ p
, u# @/ _" }  V) X- tsetup-plot3

6 ?7 Z* z1 p/ m1 tend  b' U- ]  `& r

" ~$ ], F( {; x- F3 z;;run time procedures
* Y/ C( w& z0 T: W: ~: `
# f4 ]" F0 u& j2 d/ Uto go
) C; n$ C6 ]! R4 J* ~  x1 E6 v0 I4 c0 t; _: n
ask turtles [do-business]
4 }9 n9 y. |/ `5 u
end4 t9 ~4 P4 @( c
/ D9 }+ j# W! e: s5 b) K( `4 I8 a
to do-business
- N) e# T) R  s

" t  S9 O6 H& d; b$ k  A2 P' ?! C3 K# h  ^5 v
rt random 360

' [8 ]2 b0 g; j7 h$ y
3 {1 ]$ N7 B  I9 zfd 1
% s! g: z" G/ h" O

8 r. s, k7 T8 h( A& a. Mifelse(other turtles-here != nobody)[
( x/ L: C! f, X3 x0 h, K( P

. y6 v& \  J. M; P: e2 Vset customer one-of other turtles-here

" |! Z: @( w# P* o% @  ?5 i! `5 h6 N0 P* O+ E( z& x9 Q
;; set [customer] of customer myself

0 S, Z8 a: R! t0 g! n& @% w
8 }8 ^: P# u$ }9 w) ?set [trade-record-one] of self item (([who] of customer) - 1)! W0 W0 v2 u, N  I% W4 z
[trade-record-all]of self
. G& Z4 y6 ?0 w7 P; Z6 X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ }  L: j2 w9 C4 j0 B8 m3 D

- R4 i3 s" C. ]; `1 F4 @set [trade-record-one] of customer item (([who] of self) - 1)9 E8 q1 ~* F' s) Y
[trade-record-all]of customer

& T1 d) G/ p6 s1 ^  A9 V
5 G/ U; w& B/ m% @7 A" {+ G1 k* Gset [trade-record-one-len] of self length [trade-record-one] of self
9 r( f, U- l3 g, R' I% n9 Q

% \& W4 x1 f0 j0 [% L1 h* {set trade-record-current( list (timer) (random money-upper-limit))
( @2 X# F( o1 H0 o
) ^, I' R4 G' P
ask self [do-trust]+ u  v3 v! B  v; H2 }& u8 m# n
;;
先求ij的信任度6 e$ z( f- ^. V' A
' ~+ S' a/ s& P$ a
if ([trust-ok] of self)
+ d; N  @$ X: o3 c" Q- \;;
根据ij的信任度来决定是否与j进行交易[
: [8 P$ E) ?' M2 B! v8 rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: }: D0 Y8 b7 o" K6 X% Q: a* \* M4 Z( W+ N+ R3 c
[

- d6 Q& L% `3 g7 C& `0 C
/ v. J2 W+ _5 _: _5 pdo-trade
. q, X0 y$ n+ D7 _  e9 J

: v$ p- F0 z7 x+ D8 ~# }) wupdate-credibility-ijl
3 f( \  J5 O7 B, |2 k$ s0 ^* a" y

0 O+ j& |0 H( u7 e! X' s, p% |update-credibility-list4 i! `4 {% d; M. b7 h2 A% Z7 A
$ G6 h0 E7 t9 {, k. N! m

% N0 d. M1 r2 T3 z3 d3 R3 O  G" bupdate-global-reputation-list

+ K5 t# A5 V! `; e. F# s; S) _# W; l  T$ i, V. P
poll-class
9 b; r# P' X. i' F1 u4 o

4 U/ |( X0 A6 q! G; kget-color

$ }' v" W+ M6 M3 \3 [- i6 I* s
, {1 ?$ r& X- m( i+ ]]]
8 h# G  J0 |5 V! z3 D3 S. ^
( {: S+ z, F9 L) f* M;;
如果所得的信任度满足条件,则进行交易
/ W, i$ w3 k1 n9 Y
: {$ H9 C: O& ^8 p[

* c& D+ j# n: |  @$ H; C- D7 _8 ~, H* B( V% o
rt random 360
8 m, K  q4 x6 o! u
" T) o' C' H3 ^; n
fd 1
1 P* c& h7 N- S3 K3 M' V1 r' O6 N3 }
, G9 Q( }9 l0 {9 k) G+ l- ?4 P
]

$ n3 @+ S7 b1 Q1 C2 Q7 b& K6 ~: ~6 \7 T% {* Y
end
6 T$ G4 t* D  _* G7 D' G, P

' B; {' k, X: ]' z6 i: s" ~to do-trust 1 ^4 e, l  O* \0 z6 @1 w
set trust-ok False
; ~+ B5 c, C& o6 }6 r5 ?4 h7 m7 I
# u) J7 G. ^( O- [( P& ^

" C% ?; H: y) G5 s4 r4 Glet max-trade-times 0
. ^2 f$ z* |: G2 C4 l. k( b/ l! fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 D  t, h# j  t* Z$ k# X$ g' y& E
let max-trade-money 0
3 L' ?* D/ \2 u4 B8 b4 kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 s( p) L8 J2 m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); Z5 |5 g% C$ C
+ y' _6 ]9 J$ o. z( r7 l
6 ^( E* o4 _0 u" ]6 l
get-global-proportion
; D/ O+ }: N8 j/ C. P3 Wlet trust-value
# l' W+ F  w) A: g8 w& I5 H( Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 a$ Q# _3 q& ]9 ~if(trust-value > trade-trust-value)
: |% C* P  e2 c' d* [[set trust-ok true]
& \) c4 L# T+ c$ ^/ H: ^2 J9 N+ W; Nend! H5 D' H0 w8 r: [* N
: \( W. ?) U8 l7 Y2 s8 ^7 O
to get-global-proportion2 w) Z1 ~& w0 |4 E7 K
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): d" T* s" S: H  H6 B
[set global-proportion 0]
0 `) B& T, ~0 h% w9 g[let i 0
/ i9 q) H( C! |( [let sum-money 0% H, e! K# x4 u2 `* Q
while[ i < people]- u! |' ~8 q" _0 u* ?- h) M
[( u) q* T7 a, ?& _0 n
if( length (item i1 w/ Z* W- h+ f! l
[trade-record-all] of customer) > 3 )
; [' G# c, F1 u8 \* l. ?2 J
[0 g( b1 k1 D8 V' k4 c' ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 O; R! P- B: D$ m1 N# }% Z]
5 d- Q4 r( X, ~: x]
3 h' p3 Q6 v% M/ [4 e+ f. v9 h/ rlet j 07 H7 r7 G! ~$ c( m6 T
let note 0
/ f! ~" u) U/ Hwhile[ j < people]( Y, ]) R1 X# `4 {. R: p
[
  [+ Z# c9 }5 \if( length (item i
  X) B7 D" d8 I3 a2 }% l[trade-record-all] of customer) > 3 )
. H+ \: H5 l6 V3 q
[0 H3 L) i9 }" ]  C2 M
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 F# {6 ]5 B9 C/ b6 M" X$ 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. F% [2 v: y* {  }# x9 O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; N0 w- t/ T6 X3 R) X2 M* z6 V% _]" ?. y, d" ]2 c) M' d) D
]; s% n) A3 G1 O; A. y8 F  x
set global-proportion note: E8 h4 U$ T0 }- _6 u
]
& @3 @- e8 |# A2 O0 h. tend
7 K4 B1 i4 x$ X: A  |7 ~% i/ c/ C( L- [# ?
to do-trade- m+ B" n9 ?5 Q
;;
这个过程实际上是给双方作出评价的过程; r1 p+ _0 Z) F, L7 Y. I" {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 G& n* k" f6 [: `. R3 M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* {/ y) m; i# M- \- b* @
set trade-record-current lput(timer) trade-record-current* [9 w$ c% L  ^. m# Z
;;
评价时间
& O/ c' R, i5 f4 U/ E9 E" C$ eask myself [7 }: M, M. K6 W, I, Z) q% Z
update-local-reputation
) h8 B8 Z! e4 i; ]- Y% jset trade-record-current lput([local-reputation] of myself) trade-record-current
( j- q4 z& U2 S, R7 i5 K]  d- p' ], k% ]' M3 o4 m$ m* ~* y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 {5 V( l: N$ x0 O8 C4 z. m: r
;;
将此次交易的记录加入到trade-record-one
4 B, o$ o7 U4 H# p5 s6 Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 r, Z/ F: R0 |8 Ylet note (item 2 trade-record-current )
* l1 U2 m$ O  I1 j" F/ `  q7 w" ~6 Sset trade-record-current9 P' T/ y) Q9 R0 V
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 G- W" r# r' [9 ^  Kset trade-record-current
: x. u- V5 ?1 A' F( U(replace-item 3 trade-record-current note)4 f4 c9 X9 a7 q" [' a! f
) S7 Q' s9 U& x
2 l! a4 d3 U* @& ^% E
ask customer [
& |% Z& B7 x. O3 E; aupdate-local-reputation$ X3 {+ p9 F* k' V
set trade-record-current
2 R+ x% U1 |  g7 R2 f6 ?- i% n(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; `3 w5 [9 I  y]
- X: m2 h' ~* Q* m
1 Y1 p0 {" X: R# l8 Z! Y) f& O  ^

+ t' V9 O0 Y* H" X/ b+ Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 O5 j- [8 U6 b, J: V

5 Z! _5 h: F, nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& S/ l1 _0 R. C+ \6 N
;;
将此次交易的记录加入到customertrade-record-all" i( |% X# c4 D- b/ y# X+ J
end
, X+ }8 j" I) v' H! {
2 ~+ k6 _9 ]3 Q* U3 D, gto update-local-reputation2 m1 `, t; n$ X# I3 Y+ z9 V# i0 ]5 c
set [trade-record-one-len] of myself length [trade-record-one] of myself/ ?; s% c$ g3 D8 }( P

. l: [' [1 \* O' o/ j  t: g1 i1 j, M6 K' v
;;if [trade-record-one-len] of myself > 3

- s2 t% |! v6 ~* m& x0 vupdate-neighbor-total
4 r& b: O* f* k# }& s1 i;;
更新邻居节点的数目,在此进行
: f4 X% s# q, K9 E. z3 vlet i 3
" w" s; i* g$ E+ Z* y! }+ flet sum-time 0* ]6 N* K: g7 ~6 P- J  {
while[i < [trade-record-one-len] of myself]
& q2 t, r+ z. o2 S+ z+ a* ~' R[
9 O( k& Q+ n3 A1 Kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- i, X0 S( @' R6 d) e% w$ zset i
2 R5 L' s1 L7 ?: G" m% G( i + 1)

% _9 I- X" K5 \]0 A8 z! G, ?4 A& o5 O
let j 3: N( Z2 T3 N9 L" b7 Z+ R2 B3 T) M# _
let sum-money 02 |8 U5 Y9 q, N! W
while[j < [trade-record-one-len] of myself]
" }% P/ ?* a- Z/ I$ X  `[" J7 b, T3 W/ T! [8 N
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)
1 Z( ~6 x: L1 a/ c7 r. D4 Xset j
1 ?4 c$ Z( j$ J$ d+ u- s+ d: J3 X( j + 1)

0 m% [. e$ {+ T]. E: ]/ ]2 B8 G
let k 3) A* Q  Z2 d# P7 N; k1 ?
let power 09 X6 A; X# x0 i* m7 c
let local 0) X3 a2 u% g5 Q$ |9 a
while [k <[trade-record-one-len] of myself]
0 E+ X. _+ i# m. V) j[
& d9 q! T! N$ v9 |6 Q8 V) pset 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)
% ?6 O! T3 H2 d8 e6 tset k (k + 1)8 T9 m; z$ a% e0 O
]) a' b" \( \5 W- ~1 E7 n0 J/ K
set [local-reputation] of myself (local)9 [! Z3 h, ]+ d4 ^/ {- A% t+ y" J8 p
end* T1 ^9 B/ t# d4 l; N% ^; L
7 c8 v0 Z. E8 C4 H' H4 g% c
to update-neighbor-total) f' b& z5 ?8 x- Y+ J* t- g
6 u0 O0 D  @* g7 q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( `+ {7 `3 B( M* ~) s
6 Q) u0 [8 ?3 p: c
5 @2 u- l8 t5 i# g7 n6 Q& A
end
4 m3 m) e* E- L1 Z8 ~( ]& C" o0 y1 F& ?  B
to update-credibility-ijl 9 ]8 C( m/ B% O$ V7 k$ D* b
) H% P; m: E, _% C) @2 A  H9 B1 q# [% }! k
;;
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。- m1 L. ]6 ~# V2 ]; j7 N5 m3 }
let l 00 p# g4 g/ s/ n& ]0 N3 M6 h+ L
while[ l < people ]9 G2 a# D5 Y, W6 p* 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5 A6 \( G8 d+ y9 e
[
; l1 Y" w6 r% Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 U# E' y& U$ x$ y, Mif (trade-record-one-j-l-len > 3)
8 Q* V; G4 u; q7 n. j/ G$ F$ i3 G[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
; d: `0 e; g& }6 Q) {9 f. Z' x2 e8 ulet i 35 C+ i* r# U) q
let sum-time 0
2 ^# Y/ A7 Y4 T+ a) v/ {7 Owhile[i < trade-record-one-len]
1 N  [" l. e8 M& e4 h[1 h" [' A) ]0 U! i' G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! x; h: b2 P/ S( n& E) ^
set i
; G# g4 i3 h/ Z# h* F9 {( i + 1)
6 f0 `% v4 l! C) h, i! J+ m
]+ l: R- I4 b( g+ U: ^9 w
let credibility-i-j-l 0
  a' ]$ t6 t- C3 _* p: ?4 e;;i
评价(jjl的评价)5 l: P2 |4 W# }/ B* }1 G7 _9 C" t( \
let j 3
  w7 [  J& n$ o# @( e5 ~let k 4. A0 U/ f9 q: r7 J+ g' U
while[j < trade-record-one-len]6 T( L/ H1 o0 I$ T
[, Y7 V/ O% X4 N0 L
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉# q0 A7 G5 [* ?: @: H$ P0 r
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). C% y5 K2 h4 [1 s* Q, W! S
set j
: t4 q. P" f9 Y+ d/ j% X# q1 H( j + 1)
" D$ a5 _1 z# a1 u' z+ ~7 o
]9 X- `& K6 e1 X8 d
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 K5 g8 A9 G& H$ L& ^
3 a) T6 W/ {' r% p5 H8 R) f( u# f
3 w9 j* [5 c% o- B1 q+ e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ N; h( i4 L# v& ^;;
及时更新il的评价质量的评价) z. z* s2 C% F) q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 `) m- U) Q; e" D* U/ b5 Y
set l (l + 1)8 Y4 L+ s8 N$ l4 ^
]
$ l- l" y7 N1 w3 Send# A: q* ~$ {* x5 L9 U5 a
' q; N, C- D. j+ d/ ?- ]9 E( U
to update-credibility-list8 }- t3 D4 z. Z( d' }
let i 0: g& |# |2 J& ~& t4 w! s8 y3 F; u
while[i < people]3 n* w$ ^8 x1 s) }
[8 D; L3 p; k5 g" Y3 ?
let j 0, K3 v! ?  X: v+ L9 |
let note 0
' r! B1 }8 `% F- clet k 0
8 N1 e. W. B2 Y) J- _9 {;;
计作出过评价的邻居节点的数目- [% a7 C8 S* D; B7 {
while[j < people]' k9 {' q8 T5 O6 H  }) m7 C8 M& h
[' W! F. G( N! r7 V! C8 u2 t3 X
if (item j( [credibility] of turtle (i + 1)) != -1)
2 J4 }+ C  B/ k# `- O# X;;
判断是否给本turtle的评价质量做出过评价的节点
; E9 j( V: p, K0 j6 V+ n[set note (note + item j ([credibility]of turtle (i + 1)))
9 q: l" i3 k( ?. w+ k;;*(exp (-(people - 2)))/(people - 2))]
2 T5 A, e% u& `% }- @$ w1 l
set k (k + 1)
9 {, r% _2 O8 Q. j4 g  r], t% U8 b9 ]- J, F) b. [* ]& H" s
set j (j + 1)* ^( W+ J& c. N) K* _0 l
]* X  P; W4 c  n% \  o5 Z2 C% j
set note (note *(exp (- (1 / k)))/ k)% t: `8 M& c6 O; b7 c" J/ U
set credibility-list (replace-item i credibility-list note)
5 f3 v( Z$ n; {" N& p9 cset i (i + 1): D8 q8 N4 ^; }/ c6 k; ]! \
]
2 @' Z3 `9 q6 dend& \! V, _0 D/ U, ~

& N& C& \% G9 s7 Tto update-global-reputation-list2 Y; u' b* j8 E! v) B. G6 e
let j 0
4 V9 x# h& d  H, L) V7 |4 A0 U! {while[j < people]
/ W  p' K  z# x9 ][
4 x! ]6 a0 j1 S4 Q6 ^  L7 z2 jlet new 0  j# d- Y: A& B. O/ P! @
;;
暂存新的一个全局声誉5 z& _% V( A/ E' q* f
let i 0
- H# ~7 K/ v- O4 Z9 ~let sum-money 0" X5 C+ h8 {# m( p
let credibility-money 0
9 X6 Q! l  o9 C+ d( L- V( r( N! @while [i < people]
8 `0 L. e# [" }9 i0 t( _- C[
! P( B! C; p: t. lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' p5 L" _0 ?- c' k+ n3 |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 A! H& N3 D. U( ]& G
set i (i + 1)! P3 q* I+ `5 R8 W$ ^' G4 [2 b
]/ o8 ^8 K: u" V' b
let k 0
0 J( D  V' ?) y- hlet new1 0
( L8 H! k; w, {, j# O  lwhile [k < people]
* D" J) C3 Z! k0 ?; k, R2 S2 s[
, l* d. X1 b1 j. 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)/ g2 n  k! Z: C
set k (k + 1)
( \/ m, N  q% B( M, Y]- Q% d/ k( c5 ^- t* V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- O1 m# E; M* T$ B; L# s8 Aset global-reputation-list (replace-item j global-reputation-list new)+ q0 O- e( ~6 ^* U
set j (j + 1)8 c/ u' N6 f: t9 n3 [9 `/ G2 B0 i
]
. g9 {) a8 \: e/ @) v- [* |4 }3 L( send$ [2 {  T6 _* e# M9 j: f

# Q4 K, U1 J: l  l0 G
' J( E5 ?2 j8 `  R' Z) p
' S& |! l7 r$ p. C- zto get-color# j% b, q  z* A6 R- j4 V  r1 r

8 D% h9 [' z; D6 Wset color blue
, i  C9 u, L8 P3 Q6 U
end
/ m# J/ O, V$ {* O& @0 [) m
7 k# l6 [6 C- q( kto poll-class7 i. V/ o/ D% n4 ?7 j
end
/ X. ~" i& }; `5 v' F8 S
& u4 s' B3 K! @$ U: Z; W& oto setup-plot1
" Q1 i2 O+ W- S! [( e/ c" O+ Y4 x
2 U/ t) {0 }, r& t% Nset-current-plot "Trends-of-Local-reputation"
- j  C+ B) N1 @/ h8 L6 u
- B9 v- N# c' v0 ?4 a: F( O( f
set-plot-x-range 0 xmax

- h/ @. p& X$ D( R. X# r- X* v; W  k# y! A+ ~& E" Z
set-plot-y-range 0.0 ymax
+ ?/ B; m& ^/ @1 V) p8 m* _
end; }+ ]3 a6 Z! D! w% ~! n9 h

+ y* W6 |6 K% C0 fto setup-plot2
5 |$ e1 z2 |; k+ Y8 K
) p, c" s/ {7 S; Fset-current-plot "Trends-of-global-reputation"

+ j  L. l; X8 D, h: {, ?/ j* k
7 ^8 @' _0 i2 x' eset-plot-x-range 0 xmax

$ G' A1 t$ c1 y2 C5 I9 ?' X* @2 G! _# ~; A8 {
set-plot-y-range 0.0 ymax

4 N4 [- l4 M! h' u& H- ~& ^/ Cend) o! h) h& F+ W8 i
! z. O  G+ G4 a. k8 f
to setup-plot3
" v' M) f$ ~/ U$ ?1 t: O8 z% R* H0 d1 q2 _2 r+ j  d
set-current-plot "Trends-of-credibility"
5 {4 V7 w: B' Y, ?) f
0 j, A2 i. E* ?: [* K. |
set-plot-x-range 0 xmax
) L1 @0 \$ j0 V; p

2 v' [( Z0 j0 Zset-plot-y-range 0.0 ymax

, Q9 @- I7 o9 ~7 n0 G3 y. h: g( ?end
" ]( h9 {, g6 H1 v( M- `2 o7 s, O( `+ G  c5 k- `
to do-plots
6 o: _3 P, [; @0 O. \) J1 Oset-current-plot "Trends-of-Local-reputation"
# A, J5 n: U3 Y4 l& xset-current-plot-pen "Honest service"2 c. S2 T$ g5 f) n9 j6 e" T/ Q& A  J9 A
end
( }0 N6 @3 B- u' C# W- H
5 ]0 L8 P0 H6 L- n# |' B" g- I[ 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.
( [4 H0 I5 g7 @3 _) G6 J. S( @  N4 m3 A' n% h! H$ h& ^0 B& ]% h  c$ V
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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