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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:
- n9 y5 t& p0 }% G+ l% n5 ^! ~to do-business # Z/ H1 ~' {; u" g
rt random 3609 k( f/ o, S  x. d! m
fd 18 E  L0 z1 z4 Z. q) V) x6 r0 R
ifelse(other turtles-here != nobody)[
7 [1 s7 C5 _- d  H% q, o- C, ^   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.8 u& Y, B8 J" D6 \; S
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ c! D" K: w; _" ~2 T4 M. y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 T! b) t3 Z+ P% k9 n5 v, h) T
   set [trade-record-one-len] of self length [trade-record-one] of self' ]* R& |& U6 O! N. q" T6 Z: z. ?
   set trade-record-current( list (timer) (random money-upper-limit))% a0 q5 @+ v/ ]# I$ X' t2 |

) |: A4 r; \, z, W问题的提示如下:
7 _2 l! x6 z7 b; X9 J6 C( v" Q
/ B1 r, q* V* w% ]/ x% Werror while turtle 50 running OF in procedure DO-BUSINESS
$ U5 e, ?. N! t" ?( W4 E( ]  called by procedure GO
8 W+ C2 ~" D4 F) v: NOF expected input to be a turtle agentset or turtle but got NOBODY instead.$ Q: q5 n3 R" Y4 c3 T+ P
(halted running of go): O  H7 `. G( g3 c! O

3 R  ^8 V, @  R& j) g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~~- M" a, X& e2 @/ ~$ w
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3 w$ t5 x/ b6 O. [! |3 q
globals[2 r' t$ t9 z) |/ c
xmax
6 w" j: V/ N+ H+ T- V, Vymax9 [1 ?, z" }) @
global-reputation-list
9 K+ C7 _" x* L9 a8 \4 t* i4 r  M2 C% _: n$ X% a! S
;;
每一个turtle的全局声誉都存在此LIST% }( u# o; i8 K8 |1 B
credibility-list
8 d8 V6 J7 J+ x! {: ];;
每一个turtle的评价可信度  w' @1 ?; |- D! j: f
honest-service4 z/ f; Q0 B+ G- G" M
unhonest-service5 B+ w; a( ]5 e9 t. l3 D; G9 z
oscillation5 O, t! p' I/ B2 j/ G: s
rand-dynamic9 g# P  J1 Q/ ?5 e5 ^, l* D+ I9 {$ g
]; d  m* s8 r/ y/ U+ ]

  j# Y/ H! i; }) wturtles-own[! n% t4 c3 t7 A3 Y. J# h
trade-record-all* w  Q) t/ H* Y6 f, |6 Z5 j8 U: Z
;;a list of lists,
trade-record-one组成
6 Y' J1 |: c/ f8 n, c( z4 g4 Z) |trade-record-one
4 q9 x$ f- f3 c5 V/ C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" B! I8 x* P: p
. Y0 b8 r) M, }5 Z;;[
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 [0 N2 Q, Y# k! A: y& `* `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], P3 C, E4 K# I, O% 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
5 J" b8 \1 A, }, R0 x7 s5 Dneighbor-total# y1 F# a/ q1 S) G4 R; m/ a' v
;;
记录该turtle的邻居节点的数目. H: o: `3 u/ k$ z
trade-time2 W0 |* h; L& B9 l4 e7 }) [
;;
当前发生交易的turtle的交易时间$ I2 L  L' i( i& l( D
appraise-give3 H' Y# }3 i. P5 u9 n
;;
当前发生交易时给出的评价& B* r/ Z; Z5 w* ]# A9 Y5 W2 \
appraise-receive
/ Y) Q8 N$ C: ?8 M;;
当前发生交易时收到的评价
: E- E6 H$ I& v, f3 iappraise-time( a( u* J3 d5 {8 g+ ^
;;
当前发生交易时的评价时间
. C, t  j) T& e, ^4 h) w6 glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉2 h( |/ d0 z. F1 `6 b
trade-times-total
  G# Y$ ]7 C* L' Q% k;;
与当前turtle的交易总次数+ S; R& A3 j8 k2 [
trade-money-total  c" b6 Q3 u0 i! `
;;
与当前turtle的交易总金额
+ G8 U( q  q+ u* H( S7 ~3 zlocal-reputation( @- |( i3 _7 V  ^+ P" l2 h% n8 \
global-reputation4 Q4 ]7 z  Q) q7 X9 Z' u
credibility7 E% w) `9 T1 [6 B" b' C
;;
评价可信度,每次交易后都需要更新
' j  e3 E! c6 g7 \% @2 J( Ecredibility-all
, ^  R- ^- u5 u; T2 P;;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# P6 j; E0 [. `& R2 i9 M" |
" y" @6 V! f. ?, q, 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% E: \$ X& R$ c7 t6 j
credibility-one% C' o* V1 w9 I" b) T
;;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: p( B8 K1 J/ R- G3 V
global-proportion
8 p; t/ E' @! \0 f4 |! g/ @customer
; y/ T/ X9 h, V8 ~( e! Gcustomer-no
/ C* |% B% w, K3 a  Dtrust-ok. J2 Y- S) b% H3 |$ R+ N" B
trade-record-one-len;;trade-record-one的长度
( c# S: u" r( g' K9 w]
$ D% @) y3 v; U1 n5 `% b1 z* [! Y) m& c% s
;;setup procedure7 g* G! K" u1 {1 ?( D- n- D3 Z

+ D9 m. L) ]" b/ ?to setup
) W9 ^% t. ?2 h3 U( R% y6 q" Y* I- L: ?- Q* V
ca
( d) z4 g+ V# ]

# h8 O) F  B7 Ninitialize-settings

8 o: `# c  X$ U! G5 i0 N/ |: t! i3 o( \1 D5 M. L
crt people [setup-turtles]

( u( n9 m" R5 s! c/ x% I# ^$ l+ {
2 \* z- H) B% `( ]/ _reset-timer

& `. ~6 Z# m3 d# [' V8 R; s: q+ ~6 T% {
poll-class
; E# K. N& ~  {, u( y# u
0 n& I  g  [& p( F
setup-plots
9 E* t3 ]& B% x9 z8 O

& H" ]9 J- Y- r* kdo-plots

0 |& f! z/ x+ c" D. t  L; Y# Y0 fend# T: O( D' R" c( S6 W

1 L& W3 _! L# P% X* Eto initialize-settings: D" j. m8 z# g) a8 E( p

) e) Z' u! K, J, _+ l; gset global-reputation-list []
7 n% ~: M7 g$ L# _

3 i) Z3 ~) b' F! e/ `6 Bset credibility-list n-values people [0.5]

5 s- J  f# d) G& ?* C! Q, M2 v7 t3 p7 x9 x5 j! m" o
set honest-service 0

# v4 S' Y1 X3 J+ I! K: X9 e" r  T& B! d+ t& u  v
set unhonest-service 0

" c6 j. [* I) i% ~4 o
" Y# ~' g0 h: t% r8 h8 q4 }2 Tset oscillation 0
% m1 j7 M! _7 L4 D# D3 [0 b. t9 ]( D
2 q) D6 |- Y6 M6 C0 s( e. R; _
set rand-dynamic 0
7 I) x+ c8 I5 ?2 Z8 k0 O
end
$ j/ y9 j) m+ `5 A+ w) S- ?6 G
; z: }/ b- @; v3 U/ d! ]0 oto setup-turtles + X* w. A! i. c/ @# k
set shape "person"' J4 U- {! X% v& N* q
setxy random-xcor random-ycor9 c. Y$ d" V9 M* ?" t+ d
set trade-record-one []! n, d& N1 S2 ]$ d6 G

0 u5 b. n; _! |4 Dset trade-record-all n-values people [(list (? + 1) 0 0)] ' Z' ]  \1 L- F- g
7 K! G$ V! s& W' d6 J
set trade-record-current []
+ V* o" Y" C% V* `' e' Gset credibility-receive []3 f8 G; R  m# L- s" r  \& k" R( Q
set local-reputation 0.5, C' a+ o9 e9 W: W
set neighbor-total 0; Z- `+ A4 s& u; |2 A/ E
set trade-times-total 0
' v: M2 t$ E/ F& T( Vset trade-money-total 0
2 F3 m9 G  X% F7 |% Mset customer nobody
( ]( Y$ X; Y$ `) s2 U, Rset credibility-all n-values people [creat-credibility]  j5 M9 O8 J7 k4 M1 B' @
set credibility n-values people [-1]
0 [/ y2 v- f! K. s0 q9 O, J3 |get-color
3 B) E9 [9 X% z! P  m! q
9 L5 C4 g4 r9 w& k
end
5 _( L( O8 l: t; P4 |1 Y7 S1 o, V; k$ o: z7 ^2 t, o/ I
to-report creat-credibility
+ G+ ~% K) G* k5 h) v, }report n-values people [0.5]7 }' ^% x6 A8 B' \4 D
end
+ }) [1 A& j! o- @' p( v  m% Z5 i
to setup-plots- Q% x8 N4 B: T, j$ N" l4 p

1 _  O; F9 V* A) \$ }set xmax 30

& y' E& R; [! `$ ^% ]/ n; K/ q0 k0 T$ H6 [
set ymax 1.0
( F7 v7 W6 F9 I$ V- n
7 M1 l$ ^: h7 q2 h( w5 z$ Q
clear-all-plots

4 D, u, L3 L/ q- L* a6 i' A: l/ K) V7 d3 H) _' d9 N4 f
setup-plot1
5 }/ I! k/ J( B9 {- O

( n6 p5 t* [, c  tsetup-plot2
% {7 E5 @/ `/ R8 `  n" W. s

* u! R! \* @" H2 K: V$ Hsetup-plot3
' O: c1 }* }+ L' S$ d  c
end  O# e7 \" c$ B! A) F$ _. w
$ ~8 A) p3 l" ?" X; o
;;run time procedures6 n5 b! ?( ~+ G# H( S4 L/ P$ P

6 n$ @' S& s' z6 e. |! U- {to go+ J% b  x0 n2 y$ S7 I) H0 Z/ W

# v# q# _! G; \ask turtles [do-business]

6 J) d* w) X, B: h, A7 Fend
! ~% r* o9 C) l+ S* J- J, g9 J8 \4 C0 a0 y
to do-business / T9 R5 P0 ^$ w, T5 l
1 c& `1 v, r6 u9 j0 D
- e( H3 g" }. W3 q9 T
rt random 360
/ o) B6 j1 G( i0 Y! g% u3 f5 E

. y$ b* T. ?$ G1 Sfd 1
' E6 k# i8 r; n' t2 p
, w6 l; P+ _3 ]. Y9 k
ifelse(other turtles-here != nobody)[

! ]4 k: S! |! M2 U, b! d+ A% x9 B9 f& ~4 X
set customer one-of other turtles-here
/ m! S% L3 `+ E7 u1 y  ]
. h# \- e/ Z6 o8 c6 R1 B) V6 X* E
;; set [customer] of customer myself
) m( N" n% U8 O3 |1 T3 d/ c

4 i5 w( N: k$ q4 D8 P4 |* sset [trade-record-one] of self item (([who] of customer) - 1)% f1 r  Q: U* h5 g3 P
[trade-record-all]of self+ v& }; ]4 y( l0 |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" n) t2 g  m7 I

3 y8 M0 w+ F" L' h# O( Jset [trade-record-one] of customer item (([who] of self) - 1)
1 {% s4 S" X2 k, e& h& [2 ^[trade-record-all]of customer
' M" A4 F* W; \- x

  a6 @! p4 O2 k' F& E. S1 y$ F/ Q3 Iset [trade-record-one-len] of self length [trade-record-one] of self
. D: D( ?5 O$ Y  q2 Q2 l$ T- J# W

: R: [- i# z1 x/ M4 tset trade-record-current( list (timer) (random money-upper-limit))
5 o" p/ H7 G9 V; V8 J

" X, D% v2 c; }* h/ X7 e  ~8 Gask self [do-trust]3 R2 \, m! ~) J0 U4 q( P7 \2 C% y% c! t
;;
先求ij的信任度
: P) T$ z: C  r% L' }( x4 O' p  O
3 I2 [$ ?+ I( y! ^! zif ([trust-ok] of self)
& g. ]" v5 {8 r. v: ~" a;;
根据ij的信任度来决定是否与j进行交易[0 u" @- Z3 T% B+ H, Q) ?; n# {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ r  F7 X( o" Z) I0 Q

+ I' [8 j$ a7 y4 e4 B[

, Y( B: v# X7 \* F& W1 m
0 O* `  J! ?' S& U) V6 Ydo-trade
. Z- T5 X. S0 O, J& c7 }

/ p1 t3 p( B8 w  U* Wupdate-credibility-ijl
& K$ j8 c4 [4 D3 ]( J
: l* o$ Y) D" c5 n/ U
update-credibility-list
2 X7 m% d: r, ]& ], J" u

% M1 R! ^3 T) t2 k% |2 x
0 f4 R9 B8 `7 p" wupdate-global-reputation-list
0 j; }- R6 A8 T. Q

) H3 G/ _& |+ Apoll-class
# q7 S; H. A- g8 |9 L* d: P
& R/ }+ ?- B* e8 ?+ v
get-color

0 |2 }. ~8 s- B' G, g; Q
: f, l) _' s( s4 A9 Y$ s]]
  g* D7 r: D4 q2 I
1 s5 n3 _9 [4 `;;
如果所得的信任度满足条件,则进行交易
' n/ D$ c1 i( ^/ k! l( O& g; v8 `0 r2 y( [' K3 N& _$ q/ i4 N
[
4 R( l) y: N% K# P% x7 b
, F9 l: I0 R2 z
rt random 360
# u/ ~9 V+ W) n+ D: U4 X& m2 ]7 r9 v
; ?: W2 W$ Q/ O
fd 1
9 p! j4 }. W4 }3 e5 c

1 e, o( k7 X2 l* V# e* N6 l]
/ c/ S  Q8 \* P# R
; r. j' W5 R7 U, p9 j
end
% v) q5 O' [, v$ O3 `5 |
! ~" I8 ^+ R1 t1 d2 n
to do-trust
* t! T) z& D4 Y* @# W: V4 S1 {set trust-ok False  @; v# `# r' S( Q# o
" m* {% K) M2 V7 F, T
0 N1 ?6 W  I, \0 O$ c8 ^
let max-trade-times 0+ @; ?6 S2 @! P; f. \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ Z; m, o& s4 x1 G8 Vlet max-trade-money 04 ?2 g  o7 ?7 z7 Y, T% A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" S& a3 i) P9 c+ Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 I/ e# ?; V. _& t
2 I5 {: i- H5 v

! A5 ~2 X1 H0 t. W; Q5 Uget-global-proportion
7 P) o! w$ L' H2 T) r5 S4 Z3 d- Vlet trust-value
4 p  O- u9 s% x! mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- K3 M3 t$ l+ c/ z$ eif(trust-value > trade-trust-value)
/ q2 q3 P2 R2 Z[set trust-ok true]# z- E& F' T* T, A* @
end9 g1 K+ C. d' v4 d% F, v

5 [/ ]. W% ^% R- hto get-global-proportion. Z" D2 f4 i0 {5 R5 I& I
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) l. E/ E- L# {, j) {7 x
[set global-proportion 0]" I4 c, j. D# v; f
[let i 0
+ a6 d5 r' @5 D; v* blet sum-money 0, v# f2 e% ^; b
while[ i < people]
  Z' |/ i0 E1 [# ~1 _8 g+ [3 w[2 Z6 G* Y" C/ E! y" Y+ ^% R& }5 i2 p
if( length (item i, W# I7 |+ w( R
[trade-record-all] of customer) > 3 )

! N+ L0 H& i+ E2 L, k  d4 r3 `* b[
3 a! d- d3 u9 ]5 Q4 L) X0 o! ~$ `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# g2 F& B- q" o! S9 A9 c  ~) c]
1 Y# S2 L/ q& o. `]$ F" U  L8 X9 [, [5 N# [
let j 0# T. m# G" u8 {* L
let note 03 y6 c* ~6 ]- |5 |3 \! ?! Z
while[ j < people]
' }5 I4 q: B) {; A% v* @[
; R* K# {% ?, Z7 a4 qif( length (item i
. H' x' o1 w) G3 _- O6 X+ y) y4 T[trade-record-all] of customer) > 3 )

' q# e+ k( n3 N3 x- V5 u6 W% b" C[5 Q# C+ b# S7 _8 f- }7 @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 T# u  o8 c; E* y- p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 @" l& p( X$ V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# I1 a" e( L4 B; w+ a
]
! {) R. Z( {: S* J9 q; s& A* p]3 \+ M" H) A% ^
set global-proportion note
3 \$ i" m  u* L  C: K9 t( r]1 Z2 W/ ^& f7 i4 @! p$ H: n; B
end; {- l9 Z) a, n- f; L
  U/ _2 ]3 b- X4 e  u
to do-trade7 }* k" o8 m+ d& q
;;
这个过程实际上是给双方作出评价的过程0 c6 K* I! s  A* `/ o  I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: W* l# b; \8 ]4 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; `% s/ S1 V2 a8 A/ E  b, h
set trade-record-current lput(timer) trade-record-current
! R8 c* r7 N0 j2 l# E: a;;
评价时间4 j! G7 q) Q, t, X
ask myself [* K" @$ g. P5 H, j
update-local-reputation
: Z; C/ l' K; L* i% v) o7 V$ H! v8 Cset trade-record-current lput([local-reputation] of myself) trade-record-current% d6 Q# X, r: X9 r$ a9 d& m! h
]
5 ?+ u& n$ T! {' p% Y. L8 {7 y  Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, U4 Z/ {% K0 |; b8 y4 }
;;
将此次交易的记录加入到trade-record-one0 |, \  T. F  _5 b: w$ N$ [' m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): j; Z; [, A2 F/ R* B
let note (item 2 trade-record-current )
1 M* X5 y9 m- V6 z# N4 tset trade-record-current
, ^% j9 \7 J, q4 y9 L(replace-item 2 trade-record-current (item 3 trade-record-current))

: u1 d) ]- ~) J8 k% Bset trade-record-current& C+ y! ]  \8 d) v) y
(replace-item 3 trade-record-current note)
; {  \+ ?8 {$ L) M( E( O# i, K" j

6 `* \: h! e$ n5 d9 h  ]. t: lask customer [
, {  Q/ ^' X( Dupdate-local-reputation8 k) L" [2 X6 [; L, M+ [) ^) v
set trade-record-current
( Y/ v2 n5 g1 L3 Q# g+ Y% Z; B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, ~5 ~7 b7 P; M' q
]% J6 Z+ J2 K. Z$ S, C
! y  S. x  M5 F! a$ S5 L' A8 _
* A7 }% i! k: J0 G
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 M4 {+ o% I$ o& a7 W' g* j

! d$ N. J5 m; b1 h  u+ [$ ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- W; M( W- D( p5 ~) S;;
将此次交易的记录加入到customertrade-record-all
2 `  ]2 }5 h  H4 O# xend# `" q. y2 ~( J! |8 ^1 g
/ \" [9 ]" U, b4 g) B4 V
to update-local-reputation
4 V6 S  B1 e4 |1 j% ~  N8 uset [trade-record-one-len] of myself length [trade-record-one] of myself
# k2 U4 K- B0 B& U( V5 D6 c$ M! N3 H& N( y7 B
0 c1 [, l" `5 u9 I  Q# N
;;if [trade-record-one-len] of myself > 3
1 h$ J  w/ E! _; K+ s8 `% w8 k
update-neighbor-total
8 O6 ?/ E! V! \4 a9 g;;
更新邻居节点的数目,在此进行
7 }, g: F4 d  S/ blet i 36 D8 u# v5 h  ?0 A
let sum-time 09 k: H# [) C( h7 W6 `; q
while[i < [trade-record-one-len] of myself]9 }: C9 ~: \( `  g" I) a: b
[
" ~: g; U. s: k: @set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- N6 a+ ?- u$ v3 {, V0 x; V/ \
set i
# e8 i/ v7 ]) x3 g$ u4 w( i + 1)
' |2 H' S0 ]4 ^# P) i* W: c. j
]8 {$ x' y+ P2 U& V8 _5 D
let j 3& V' M9 v8 n$ ^& g& @4 K: m9 k& G8 I
let sum-money 0
' Z( Q3 X( \' w$ m9 Kwhile[j < [trade-record-one-len] of myself]* L% b1 s0 H7 |% C. I; z
[
7 u! u  N9 A" e  a3 sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& |! u  U4 E) E* d, h$ u
set j  v8 s3 k$ N1 L' a  G; l
( j + 1)
8 @" A) J) F- v' c4 W" b0 |
]/ [% C# o& f- K& ^$ T' V5 j
let k 3
! J3 p6 T" |5 C9 f0 L1 P# P$ [1 elet power 0
) p2 U5 c; E0 b  @let local 0
' c* R9 ?+ ?) D) s: twhile [k <[trade-record-one-len] of myself]) ~3 d: u9 q, D
[" g" h0 N6 x( X! E& U1 t$ G
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)
1 Y4 G. v! I' sset k (k + 1)
6 R! N) T- x" W$ u& ^]& M8 k* S( B! @& u$ H
set [local-reputation] of myself (local)
8 o1 q3 k7 L+ Yend0 B! a8 D) k% j

$ ^. \; ]- X& C6 x2 dto update-neighbor-total5 V) C- e+ r  h9 d1 o% @$ F. ^1 R

* r% r4 a# V+ w% Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], w$ P) B9 H- ?( I

, L' [8 i3 T( B0 u7 w

) n' P+ f, r1 M! Q. lend
  R* P9 U$ {! ~6 m- W2 [+ q3 J$ R: C' a& W
to update-credibility-ijl
) p2 T, p: N; s# ?0 P" a4 ~2 D6 E* g* U' H) 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。
% P/ _" Z" w' |6 F3 G2 C+ k. zlet l 0% w8 ^$ O7 k8 n7 l3 J9 J
while[ l < people ]- f- @+ h2 t2 q+ d5 ]
;;
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9 l; Y$ `& s0 J  w' X2 t1 I
[
( o, R+ _% P' ~/ f: f) ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ R+ W( ^* e) t  |
if (trade-record-one-j-l-len > 3)# R+ A7 Y3 Y+ z' q6 |2 n; V# K
[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& o4 r- D" M5 O0 w
let i 3
3 ~  A1 k/ l4 }3 `. |5 R! zlet sum-time 0
. a( U. a% l0 p' D1 A) _while[i < trade-record-one-len]: |. X( A7 T4 x' @1 K" O
[
, Q, r4 v  F. {' |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ s) a( s) d& a0 v; ]3 v( |set i4 q: X9 a8 w" x( c' d0 E/ B
( i + 1)
# s5 ?7 L! H; e; H
]) @4 _, m. N# x( M
let credibility-i-j-l 0% ^; K& F- L' T6 W# Z
;;i
评价(jjl的评价)
% o% U  j/ b% P9 G$ clet j 3
* b' `. M1 ^* ?4 U" Alet k 4
+ a) e! f0 z+ ]while[j < trade-record-one-len]
  t7 ]) I7 S& H5 r8 W0 ~4 ^[
, w  U; {& {( u" _4 t% Iwhile [((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; O; n2 \; K2 v6 r+ o/ T& C8 h1 T9 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), {3 u0 P3 s* h5 K" [6 f/ B& ~, o
set j
3 Y& ?4 ~- P8 I3 g( j + 1)
$ a0 e9 j6 P7 q( e! s3 G2 T
]* \, f3 W8 M7 u: i- B) G. J: _- c
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 ))- [+ b/ Y' J4 c- W  t
; w5 z1 H# i! x; M* ?

0 w" W% k3 w& s, d) hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). j7 T) y5 b' U5 K
;;
及时更新il的评价质量的评价
% z7 ]7 r" C/ i9 q; D$ R+ V& Q0 fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, p0 H- H. h8 P: D8 \# @( R( r8 _" k5 ]set l (l + 1)
- i& v$ s: s1 D1 q]7 H; _) n7 \0 r6 U5 g
end% a( |$ h9 B# H9 j1 z- a

& ?! b# H" ^. t) r0 S% a, `" ~, `% Lto update-credibility-list3 B- |( i% ]& \; y( _2 g
let i 0$ s# ~* c$ s+ G
while[i < people]2 L% u$ R8 ~8 M
[
& R5 z1 ?" U" T( J" Z: O6 Clet j 0- b# P8 Z! V( Z
let note 0
% P0 f! H, N2 G6 R, Plet k 04 \; h1 z/ c8 o
;;
计作出过评价的邻居节点的数目# q# A! E6 Y7 U4 [. {9 D. n& o
while[j < people]2 s; |+ K9 T1 J  P% D1 k' E
[
1 W" D$ y9 ~3 Xif (item j( [credibility] of turtle (i + 1)) != -1)# p" p* {; j" @
;;
判断是否给本turtle的评价质量做出过评价的节点8 s$ i  i: u# N  i
[set note (note + item j ([credibility]of turtle (i + 1)))/ L! r' g5 ]% z4 a% n
;;*(exp (-(people - 2)))/(people - 2))]
! ~* T( ]5 ^0 S" S0 L
set k (k + 1)$ O: w+ ^* A, Z; [' P
]
* @+ S. ~; L1 Cset j (j + 1)
9 ^' F7 K$ F( n& |3 g# l]
& m/ r1 j; m$ H* K. W" t$ Bset note (note *(exp (- (1 / k)))/ k)  g4 f, |* M) y" f8 V
set credibility-list (replace-item i credibility-list note)
9 b; k% R6 c. _4 p3 x' Kset i (i + 1)9 e0 a' P' K! D1 k
]
1 e+ Z2 @% m+ g8 {9 |end
) n! j' D. o" s2 {
# `; E2 K8 V4 C0 B1 cto update-global-reputation-list
( X/ k5 L: k! _9 plet j 0
3 P9 _3 D: H" v! v5 t7 `; Ywhile[j < people]
0 B9 {4 I" D& I0 W3 `5 U/ Q+ }[8 r# F- Y% e7 G5 L
let new 0
4 p' X! {9 A3 [: L  e: U( u) r;;
暂存新的一个全局声誉! h9 g7 o) A0 P: Z8 b( `% `
let i 01 f( ]4 B6 k6 {5 \; w% O
let sum-money 09 b3 N) t0 |- k. z1 T1 `: F
let credibility-money 08 g/ K. V% L! k
while [i < people]4 P! d' c, X8 s3 G# m4 J  j' J8 [( u
[
& i! l5 j/ }, M  z' G, Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& Z6 t; v2 B& ~# W( Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# d: q; I+ u% J1 s
set i (i + 1)
# P9 X8 a5 x  v5 F# m, u% R1 []
0 C$ J+ b) o* j+ h# Elet k 0. V% O. _( L1 [, m3 W: l( G- w
let new1 0$ Z, G7 l/ O8 @
while [k < people]! V2 ?: {; _2 y) x
[# A: z. \/ m" ?! e- E. N& Z* y
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)- N0 v4 g9 A- R% K% `5 Q8 ^* K' N
set k (k + 1)
( ^: j# ?: l7 l- E& Z]1 J( C  p7 U, z$ H! n( r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , P, {( N- F& P" T# B
set global-reputation-list (replace-item j global-reputation-list new)
3 j0 H3 H- X. B' e+ g2 d  pset j (j + 1)7 w- n' f  W% V3 ~1 k; u
]
+ Q, T0 k) g, E0 J! cend  n# N$ m( |+ [" X

: l. c3 Z( e  c
& j9 K  ]9 l/ v' S8 T: Q6 u* \0 _
to get-color
, t) W. X6 ?2 w
7 \* o5 e2 {" C" j1 vset color blue
$ q6 Z# Q1 E! {
end; Z, A) S8 N3 s  ^

) L% H8 F' J0 X3 w4 [) w2 Jto poll-class8 X( w8 `9 Y: v1 y; d0 m7 O9 i
end! |/ [+ I$ ]. \  V7 F4 V
9 @8 T9 C0 D* ~: D3 l
to setup-plot1& q% i; V( e7 N0 ]& H7 O" V2 o
; {$ @, j% w' z0 B( }  \% o
set-current-plot "Trends-of-Local-reputation"

, x* M' R% w$ T; u+ t0 w3 s- G2 O9 N$ Y4 s* b" X5 |
set-plot-x-range 0 xmax

* P/ t2 v3 {9 z- O4 r0 _+ i
/ D5 c/ T- c* B, n7 M9 A! Zset-plot-y-range 0.0 ymax

& _2 b: X+ w* B2 b# dend
+ C! d  `& H+ b' }- ?. |: O7 u$ M; B2 ~; c; H
to setup-plot2
5 e. }8 v& C# b- O) [; r6 w% p( _7 O5 J+ u
set-current-plot "Trends-of-global-reputation"

; b6 U, L# F* f% P. `4 F) V7 d. [9 P8 F) V) s: D
set-plot-x-range 0 xmax

* w1 E' D3 b4 D  t' H
6 v  U% \- i2 r* c0 {) ^  ]set-plot-y-range 0.0 ymax
. f6 X8 I) T* a  G
end& K2 L4 ]+ L7 L5 ~: K# M4 z3 U
6 i+ Z1 U" `4 p8 c$ j$ _9 [
to setup-plot3
2 p! s4 U0 b4 \5 b0 ~! d
, y& R& a- e9 J% gset-current-plot "Trends-of-credibility"
( S6 X6 O8 n" M- c) I3 h

+ f! x1 ~3 m0 f+ e  x  w2 Fset-plot-x-range 0 xmax
) Z! B/ U* Z2 C; R

" C& U6 l: ]9 yset-plot-y-range 0.0 ymax
5 S- w0 J+ r9 Z3 m
end
6 }& ], N7 U/ P
0 m- k; E; ?! R1 N; eto do-plots
2 @: F- a7 w) ^" t9 o7 Tset-current-plot "Trends-of-Local-reputation"
, i9 @9 Z) c) |6 G, \set-current-plot-pen "Honest service"
% L# g6 J2 H7 t7 ]7 Nend' \) I( F/ a& U; [- y
" z4 w7 r0 x8 ?; z$ W
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
2 U' \. r3 r" a8 j6 i4 F
! Y0 J) i3 G5 b( j/ ]0 N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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