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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:
9 E7 ^0 W% G9 P) E* Yto do-business 7 |' \& }( m* E9 r( Q9 r/ N2 [- \
rt random 3603 S* ~. ^* q  {
fd 1
9 a4 U  y7 V2 r7 b ifelse(other turtles-here != nobody)[
% w- Q; U- m% u4 z* u, m; N   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.( k5 s4 J* o$ b2 U( t1 `
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 ?4 a1 p4 ]5 H; g6 i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. e8 u( O9 F6 m' f  F4 j: `$ V
   set [trade-record-one-len] of self length [trade-record-one] of self
/ B) b4 G) Y: r% a! Z   set trade-record-current( list (timer) (random money-upper-limit))
! J/ E( W- E# q+ x5 {
  f7 e: [; W9 ?- q& ~问题的提示如下:+ ]  o/ S( K1 @

/ m5 p# A# z+ b4 rerror while turtle 50 running OF in procedure DO-BUSINESS
. W; e5 |! @! X  called by procedure GO) r4 T4 w* X- ^5 Y. X% D0 r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) b1 X2 O5 K2 d, t2 _
(halted running of go)
/ e: S" Z1 a6 G2 q, q6 v
* ?( M/ p6 L' Z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~~5 `1 N, u! }6 {0 d. g( {
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
$ |) _5 S& T/ d1 V* Zglobals[
9 y( b) K5 x* Y0 U& v) Kxmax  Y9 }! C2 y% G0 p
ymax
5 a1 F; x  S1 m9 eglobal-reputation-list
5 `) n# |. R- P" l' }/ N5 x1 z
  v! O. d) o: ?  H;;
每一个turtle的全局声誉都存在此LIST6 I3 E6 O6 n3 u' V' z( f* Q
credibility-list
' v. u% x, X: Q;;
每一个turtle的评价可信度
- `& d) l. ?8 L, A, W' _9 |honest-service( d" P2 @1 ^7 n
unhonest-service# c6 ]- _) T  ^( u4 }
oscillation
+ p) C7 K1 K6 I  o+ b8 `1 @rand-dynamic* f. h2 h4 K0 m7 [4 h1 @' W
]8 \1 }+ G9 d2 q5 |8 Q1 j! N
; A- N/ v) k6 ^1 z0 S1 B
turtles-own[7 p5 b" Y1 a0 h, s- N
trade-record-all( Z0 ~& W" P4 t1 N
;;a list of lists,
trade-record-one组成
2 }  D: V& ?: h1 o& @+ m$ \trade-record-one
- o7 `0 u1 Y  U7 r;;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 {2 u6 d4 s6 o) t+ i# a
) L) V5 h- P* ?8 m! t* x
;;[
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 R- }% u* u% ~  }  C2 f7 F
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]- ?1 s9 R! t+ R  _' u: j
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& B) a2 _2 v& k# |0 Z" G
neighbor-total% F' }3 E! |5 t/ v& o( K; d/ X
;;
记录该turtle的邻居节点的数目
. b; f+ n( ~/ ~- m0 [trade-time2 e) o# G6 {, n
;;
当前发生交易的turtle的交易时间- f6 h8 w1 L' l. t! m
appraise-give* h1 A" v7 F) M- ~/ m
;;
当前发生交易时给出的评价& [. R/ H. ]  G& Y6 C& t$ f
appraise-receive
: i& E  E+ z( {$ p;;
当前发生交易时收到的评价
5 p- j* w5 \7 W( k" D6 z6 sappraise-time
) G. V9 R. o2 N* }4 \;;
当前发生交易时的评价时间
& _( ~9 A" o' F( ?* ~9 Q$ \' I/ Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 j1 L/ l3 e* b- E8 _9 g2 ftrade-times-total
6 D1 {, W& {+ V;;
与当前turtle的交易总次数% Q$ A- ]" `( u3 `
trade-money-total
. o* b2 C& C5 R;;
与当前turtle的交易总金额
' j% X# Z0 a3 i) ilocal-reputation  V0 e$ l$ Q1 [* W; m
global-reputation0 E" p- T% f! i( Q, \9 S9 s0 {
credibility2 X9 t; C" M; [& m9 x: ]8 s
;;
评价可信度,每次交易后都需要更新
5 I9 h* S  M4 Z8 P, f- P% S! H" q9 Jcredibility-all' N1 H& Y; T1 ^* Q$ I, P  [0 ^$ Q* 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% H- n; R3 l7 d: w9 `

6 ~2 s) Y! A# b7 K  U;;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' ]& i$ l) S9 M2 T' N
credibility-one
7 [" s  |9 e6 ~# p+ I) P;;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+ z, G( Y5 Z- ^4 Z! ^+ z2 m
global-proportion
, z* {, d7 X% Dcustomer
1 ~' Q% x% W7 Mcustomer-no
1 V- G% ?4 D) S$ R# {+ F! Y( Etrust-ok+ C  l1 M& V# E; C3 G
trade-record-one-len;;trade-record-one的长度
' g# y7 U" |% {' |, B0 y5 U5 o]
* K4 U+ \# @0 Q
2 ]8 ^; N$ |- w) r& @4 ]6 y;;setup procedure6 v  t, c. C3 H
* W6 {% F2 Q% J* }! v. f* o
to setup/ d; l- J" t/ n' l- C+ L& p" L

% ^/ `1 H. }; j0 `2 K9 eca
7 n4 X' B/ v( U+ L( s

7 J3 n, c3 K" R( |) Yinitialize-settings
2 j! Q7 c+ W# j2 H

0 O. I3 J2 t# \. A! l$ Ncrt people [setup-turtles]

5 b1 ~( Z, B; _- K8 u
. @* l; ?7 o7 G* D$ mreset-timer
2 g$ S- s3 g* n: s0 [. F" ^, P

( s' O6 p3 C' b! Z  c- s9 f3 |poll-class

. [7 C" d) Z$ |& K$ X+ ~1 R, f( Y* L6 H
setup-plots

; q" o+ ~, p1 \  D
9 D( e$ j9 V  n/ M! pdo-plots
: \$ |% O4 k1 ^5 h/ b
end6 T7 J( c2 ^* l% r: l& a* c7 h

6 @. b  c- m! X3 e% {' _% sto initialize-settings/ n: T3 [" K3 r1 Q0 ]) C# y

- N4 ^1 D: p" xset global-reputation-list []

& J* l; @6 ?4 B0 g- |( t
" h- L. L6 k) t* h" Mset credibility-list n-values people [0.5]

, j) Z; N& d8 E( K$ s
9 j! S. |% V7 s3 d* n6 kset honest-service 0
! f9 U. p; \1 x5 w2 s2 r6 W
7 C* B) X/ K3 x8 ?
set unhonest-service 0
1 `( @& n: a9 K. ?

4 n. j: o7 M- n  M  Oset oscillation 0

1 l* ?# p# d/ D7 q$ S, @9 e" F" \& c  F
set rand-dynamic 0
% [# V# I: b6 W; M1 u9 ^
end
- U+ p" |' d: ^! Q
0 F2 V) a  J, \6 A: y* `% J. t  Cto setup-turtles
, J3 T0 D( J0 J0 G# Y* m: \8 n6 iset shape "person"
$ x8 J( n6 o$ X, v7 [setxy random-xcor random-ycor
5 `4 K. C0 D  q- z# O8 hset trade-record-one []$ }2 N  A- L# z3 N: V# A

7 h3 W: S: E0 x) [+ eset trade-record-all n-values people [(list (? + 1) 0 0)] 8 w; o% N3 o$ n+ ^& [+ X! i
2 u7 X6 f5 R' f9 b$ d6 M
set trade-record-current []
4 `: _: G! r4 U! kset credibility-receive []
, W3 H" g6 w' }8 [set local-reputation 0.5
7 |' A& W# p: t* qset neighbor-total 0
6 m" ^8 q. g2 r1 {, a% e! r. Kset trade-times-total 0
, O9 x3 y. C& @set trade-money-total 0
/ S/ i+ Y3 Q* Q: r/ g* }set customer nobody9 U4 `, ?& j. _& i
set credibility-all n-values people [creat-credibility]
+ ~1 h: C0 Q" c& n: s. N2 e! z8 fset credibility n-values people [-1]2 ?0 Z5 E7 o2 ^; \, Y: F
get-color/ s1 ?0 K$ e( Z- \7 p' t

3 g4 H  e0 v1 Z  }( n& J# I  nend% o! E7 K% e( Z# d8 I- [' C
  W( c$ ]# X% m0 a# m8 k
to-report creat-credibility7 ^& H" j* Z6 g- W9 X  J
report n-values people [0.5]
, j5 V' R, f$ A: z1 qend" X6 A0 a  L8 ^% W; h
. Y  \0 h; y$ o! p1 t, l
to setup-plots- T$ v( [: A( Q% H- d

; V( v2 \/ N; u( P8 z+ t8 Z7 \set xmax 30

* V7 H( z! b- F- r/ S' V  H% u& t7 ]0 d6 {! q/ r# ?6 ^& E
set ymax 1.0
* @; g, ^8 {* @4 S5 `" R, h; J4 Z1 V
. z0 I; Q  b0 R7 z0 z
clear-all-plots
( X; I* C: z9 s: h/ t( z

- {9 i% L; F, \5 |8 F' o4 Ysetup-plot1

( d1 u/ Q; _* U" p) J; l
. u$ Y  G& c* B9 Q2 `8 c; }setup-plot2

2 l$ d" _- H' @6 c
' w+ J5 V3 E' `4 [/ n  Rsetup-plot3
  Z, u" ]- v: g, ^8 H6 n9 h: {
end$ d. U5 \; y+ `/ x2 D  X7 L' V/ c
1 U! b  z4 ]5 e; y; h5 l1 D
;;run time procedures; A# z+ ~5 u% A( U& ?* ^5 B" i

7 x0 a9 ]$ O  E( f; h7 d$ ?to go
9 B- B) q& H  f- L' u7 d+ e* `: K3 A$ H6 F' T2 H5 g
ask turtles [do-business]
. A0 K0 X0 j* a" V) N
end
2 w! D3 w* R7 @' f5 _- F+ p3 B0 Q% j2 q
to do-business
; D9 G0 K) o6 m. d7 H
8 Y* S7 r( C) D/ N' _
5 p3 r) c/ e; W9 `& X
rt random 360

9 L3 ?. J2 `# l& h  `! S- o' K7 I+ s  z
fd 1

; h2 o1 ]6 Q$ T+ U; X6 c+ b, Y& Y, s5 b+ T6 A
ifelse(other turtles-here != nobody)[

  K( k& a4 s. s
- F1 l, B/ b) hset customer one-of other turtles-here

4 Z; k0 }/ P3 ~  \; v- k7 d+ d# p
;; set [customer] of customer myself

, E9 a% a8 T9 Z( t
# q+ t3 r1 E) }set [trade-record-one] of self item (([who] of customer) - 1)
# d5 z3 b2 p7 ^3 [[trade-record-all]of self
% K/ L1 C0 i$ r; V7 q7 ~9 `& c/ Q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 R) N+ O# F* E9 i0 s" u( ~

+ S/ N; {2 `& d- fset [trade-record-one] of customer item (([who] of self) - 1)0 ]5 t6 f( Q/ r# Y+ ^
[trade-record-all]of customer
8 `* i  r% z; X' t

: f: n( I# F# N+ `set [trade-record-one-len] of self length [trade-record-one] of self

4 ?, c& k  v5 m! R$ ~! _
) I( ]! K+ S9 \2 Q4 `& S% Tset trade-record-current( list (timer) (random money-upper-limit))
6 B% X: Y8 `: a  H

2 \  [' K: F% [: S  p9 B' c! g/ Lask self [do-trust]' O) F% I& T2 T) \/ _
;;
先求ij的信任度
) ?: n) w" p0 J( A: i; A7 t2 ~5 v; V( G+ |
if ([trust-ok] of self)
. P% L" N, }4 m! x0 y, x/ n. ]: A;;
根据ij的信任度来决定是否与j进行交易[4 Y3 Z; x( w, ]2 ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: c0 a, A1 u- C3 q$ i3 ^/ V/ j- ^2 V9 z/ R1 }6 d
[
& e) C# u- t* L9 o( Y

1 }* ?2 P7 b' _7 hdo-trade

% J+ ]' }& Y; G- J) \8 D! f% l9 `' u7 {2 z) J. |: r0 J
update-credibility-ijl
/ D2 P; S5 t" O" y5 C  S# S
7 ]0 I% t) a3 M( Y$ U9 l
update-credibility-list
! W- ?7 V# r+ U. h7 p5 w
* ?- x& j# F* \9 c; O7 t( H

6 G2 u# v, H" I; x# x4 X5 rupdate-global-reputation-list
( G1 R7 A) I( Z# ]1 ]
* M6 ]9 w$ [: m" a( w
poll-class
! |, H9 M/ D; T6 C" |+ u
4 Y. P  H8 h& U3 f9 f
get-color

* b, ~* y& `* c3 \' ~+ E- k9 p; a  D  \" `8 u
]]
) Z$ _/ R, ?6 s+ J! n
: w+ s5 e+ n0 Z2 Q- u;;
如果所得的信任度满足条件,则进行交易
' h5 [/ p4 `0 F; n; V' L3 J$ \
! Y4 T+ r; t+ Q  B" \8 M[
* N2 {3 ^* r% N; A
# |4 q# j1 M4 `! O
rt random 360
# z6 q1 [1 A; _( @
- W/ J+ O6 S+ L% z
fd 1
! P' h0 H4 t9 m9 Q, ?9 v8 t
4 b' F& v6 h& V" j
]

% w# ]8 Z; G5 i* P0 u, i- a- b3 ~! i: U% v
end
  }' t, S/ b% Z7 Z" ?% `

7 E: Z. \9 m  o& W' Y7 y; F8 @1 kto do-trust
: p. d! j; q& H0 ?7 P9 o9 w/ @; tset trust-ok False
$ B0 y" x9 |" X6 _. `8 H2 `: W; D/ w: g7 z* t! Z

: o% V2 T! \  B) I  B9 U- clet max-trade-times 0
- _% S6 z: m2 h) }9 k( uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 t% d; d2 }7 F: a+ B7 ]
let max-trade-money 0
, j- P) Z; c0 G4 P1 W  Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 ]5 G: r! ]) v: p- D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 n) M  j' [0 f- L& e
3 [/ {+ z- Z5 ]7 u

0 c3 {  ]2 E) p0 L4 R; |get-global-proportion
, Q5 D3 J1 g; {# rlet trust-value
& [; x5 w( ^& p( [. a8 Blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

! e8 m$ L- P8 H  \if(trust-value > trade-trust-value)
. m# \9 K+ j! G$ ~* }[set trust-ok true]: L- o- J" k9 A$ E$ Z
end
2 q, I8 T# c( @  V6 B
0 z% r$ f6 |* o- R5 h$ A7 Gto get-global-proportion8 B3 ]  }; w) M, d+ V: \5 X7 j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ G' t/ N/ [# E/ K4 E[set global-proportion 0]
7 s7 O7 ?/ `! y9 F) C9 p[let i 0# G: i* c* E3 v& J& D/ W7 C
let sum-money 0
6 z, h. [7 b- K8 `8 Xwhile[ i < people]/ y; X2 t+ L- M* k+ w# t2 |
[
$ x2 E. |' `7 @if( length (item i6 ~# Y5 i2 K2 p- T1 n/ }
[trade-record-all] of customer) > 3 )

% }& O0 I- S% @" f% S6 Z# g[
& U+ Q7 i3 d, E  `1 }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 I9 N: p0 z4 a2 H! U' a; X]$ o& p: |( ]* D. F1 j
]
% T* U0 [/ l  ?. M  ^9 F" Tlet j 0
4 q8 \) I+ s6 Plet note 0
" ^; v1 O" Y0 F, h5 _while[ j < people]4 i6 P5 l/ S  y  G' P" I8 V
[" l! _/ O/ `& ~6 {
if( length (item i
& T8 G- Z  u8 N. v# q  D[trade-record-all] of customer) > 3 )
  {2 U- I! b. a7 M
[
& \, h% N) \1 H9 l  gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- ^5 [( f4 m' f) G+ S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' n, x$ O- t( E. b7 g& o  a3 v) |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 i: o3 q; p3 ]' R
]% Q: o/ |6 M7 a3 `+ w$ S# t3 a" ^
]
5 S7 h+ v0 L* F- R. m' |: b6 lset global-proportion note
& v$ L8 U6 L- s# Y6 v]- G7 I! a0 T- ?6 Q+ z/ b! F% b
end. `$ b$ q3 {5 U4 p  e, N

0 P# Z! {7 |' `to do-trade$ I  J+ c/ F$ o, ~- {( m7 K6 M
;;
这个过程实际上是给双方作出评价的过程
/ B% ]" Z  H* k/ p4 {8 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- u# ~8 t' u  ~( [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  A' z& G5 V) j; u9 [$ Q! {. z  N
set trade-record-current lput(timer) trade-record-current
6 A8 y1 d  P& l& J;;
评价时间
$ d0 @0 M* Y' a7 Oask myself [
2 y1 U: \4 W- I: r3 Q- }4 Lupdate-local-reputation
" I% r# }4 k( t- i! ~' I0 j/ u( |set trade-record-current lput([local-reputation] of myself) trade-record-current
0 T) q7 [- g" U& f2 C; q$ V  r]/ {! M! x1 `/ z3 w4 W8 G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, P# I) M) M1 O# Y' G;;
将此次交易的记录加入到trade-record-one
7 _" X, e$ k1 V6 |set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ ]/ P  ], p* N' Q# Y# k" d& q
let note (item 2 trade-record-current )
; X: N+ ?& F6 F0 o1 v1 c1 D  m% A% Bset trade-record-current, [7 A; U& @; ]2 e: c+ l8 q( K
(replace-item 2 trade-record-current (item 3 trade-record-current))
% Q4 J, T1 z% ]; c3 r
set trade-record-current
! t" N7 V6 ]% H$ R5 `(replace-item 3 trade-record-current note)  k0 S( T. y! N- V
/ ]7 }8 O1 X% g0 v8 r
) S( a& N+ U' y2 {
ask customer [
9 q1 V7 B- a- ~4 dupdate-local-reputation
2 L6 E0 s: p% l& f1 u  lset trade-record-current1 Y- F& k4 ~* U2 }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& f8 @* t/ H$ I: |]* ~" o' F6 g8 e% E; X' `
3 f$ Q/ I( i0 g, F+ W- Z
1 U* F" l* x$ S2 T  I5 N8 a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ \5 ~( L( \0 v# t4 M

5 o' u) {+ I$ l+ H# w, iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 i: K! O1 j/ W( n* s
;;
将此次交易的记录加入到customertrade-record-all
6 j" h) N/ z$ u& q2 l% t1 y8 |end
: t# Z* ]* Q! w/ C: h" C9 r5 F5 y0 O5 u% ~$ L! }" l5 P
to update-local-reputation
- O! O: n- t/ k( I6 _set [trade-record-one-len] of myself length [trade-record-one] of myself
- d) U, f1 g0 E7 ^4 h; ~% B# _" f. }6 w+ u/ C& j

- l5 U* q- F* R8 g1 t0 D3 A, U;;if [trade-record-one-len] of myself > 3
# J/ V' N8 i) {/ u
update-neighbor-total1 _) B1 u$ s0 f/ @2 _
;;
更新邻居节点的数目,在此进行
$ \9 C7 E" q' [$ ?, P! rlet i 3
2 t: R4 G5 u6 T" clet sum-time 0. G- S& r1 w* X+ i
while[i < [trade-record-one-len] of myself]
% t% w6 B( c2 e  r[4 j. \/ @. a3 d7 j# l/ E: S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; ^6 z; O& g: v. G% }: Q9 b8 B1 }set i
) W1 S% b3 y% g( i + 1)
: N. @1 k' y" Z* Y7 j
]
5 J& y* B# u) J" k3 N( |6 Hlet j 3
0 q/ v8 q$ Q0 F; r8 T/ @let sum-money 0
$ B$ x7 b: G: Mwhile[j < [trade-record-one-len] of myself]5 l  g- k8 `4 K4 V1 z; F) J
[
( B$ u; C3 G  B( Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)  v- {# k( ]) T7 G
set j
, s, W) V% r' d, [$ m( j + 1)

4 l/ u& O4 W+ |) z; k]/ G6 b. x  y& d- g) s) {4 D' W
let k 3$ r9 q; {) U6 l+ [+ m
let power 0
: R) J6 V& z- J; f. C% Q% D0 `2 glet local 0& j7 e( I3 t- [3 Q1 e- Z8 T
while [k <[trade-record-one-len] of myself]
4 t. H' j" q. k. x6 Y2 e- \7 }( ^[
, P5 v' ?- ~+ q6 h; q, }: w8 a5 q* ]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)
( y1 x# r6 W$ ]6 W  |- L  O7 z; x* jset k (k + 1)( h2 j  K; u: ^" f0 I  o
]0 g0 d4 F9 G# i" U# s8 P
set [local-reputation] of myself (local)
8 b* c4 V8 \6 X% I, N5 _4 Oend, Q: H: |8 O1 M2 }4 J+ C
3 u8 J$ u1 Z1 p% J3 ?% y
to update-neighbor-total
. p- D1 _$ y7 A: [/ H1 x$ u
* \2 s4 L* o" Y$ v. T( l1 V9 cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) y* N' f( H5 I4 Y
( Q: ]/ W. Q# J- _; r2 _5 K5 E( u
- ~9 d6 Y: B" U/ U, ~( i
end
8 ?" h8 ^. ~( }3 f% z6 w  m$ j, T& k& n
to update-credibility-ijl 0 X5 Z- O; }6 a* o, r! R
/ ~7 W; ^# A6 J" \/ E8 k2 A
;;
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。
3 E. {8 g1 h! L8 Zlet l 0
  N5 r/ K" G) H/ Ywhile[ l < people ]3 G4 f0 _1 m& B  b9 z6 p: A
;;
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
3 P- [* Y/ r" ?# a* e[
7 h; C$ \% s$ n2 m$ K+ v6 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( _( E. d. `) W
if (trade-record-one-j-l-len > 3)  H! q; X$ T0 H  y& j
[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-one1 R- d  m0 Y7 Y2 R
let i 3
$ D7 M; p# I4 blet sum-time 0
1 |& L' D  a) K' \while[i < trade-record-one-len]
( `0 z6 L& [( T) }( {3 o( D[
7 t2 _6 Z1 \& d! @) Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 E! o! @8 M$ ?2 G8 Cset i
0 C- I# I8 X  O! d( i + 1)
& K8 m2 M4 j  Q5 o, p
]
' i/ d( J- ?/ g" u) m6 Ilet credibility-i-j-l 0
# m4 e( B. x6 [& I! L;;i
评价(jjl的评价)
6 d- l# A3 ]. @  Flet j 3, j6 T" l4 d8 M6 _" ^
let k 4
5 k5 ?$ q3 k) `4 Z3 M5 O+ Ywhile[j < trade-record-one-len]
, {* H! s8 J5 a3 U2 h[
" S5 J8 w/ j. k1 B; [$ ]7 f: J3 ?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
5 |  C! _- \2 i4 ?. ?9 lset 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): \- v* ?+ J1 l3 k, h0 D. t* R6 M
set j
* X) D! _, ]& c8 i$ K9 {( j + 1)

0 }, X. y, @; e: A]; x( X  S1 v  j+ `) ]4 J
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 ))
/ C4 `* f7 @( p. _3 Q2 `& _- H/ ~  S1 z# J) ~$ x

4 E* \; j# W) f) m, O: R- y( U9 @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& T7 D8 C& _8 m3 B: _;;
及时更新il的评价质量的评价2 f9 |! B+ E( S0 ?# Q7 u$ G& ~- r& V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: G8 l$ Y' {; g: R9 X! l1 k
set l (l + 1)% T9 |0 @' E( R
]! R8 r: S2 p/ u
end
" `2 [1 \: ^) U& U, j% T. n8 a% K+ V6 w& n* G2 R3 r3 v
to update-credibility-list  W- x& U' p# X# B; [2 q- B4 B
let i 0
) y/ J9 V' |+ D: D0 Z5 e. s0 _while[i < people]7 p. ?3 L0 x' t1 B8 x1 \" ^0 ^
[) I( ~; d# u( E. h+ l3 Q, i
let j 03 v7 a" \+ o8 {  a; ~2 W6 g
let note 0
4 p6 S8 L2 C$ Y5 X( g6 S& U7 V) hlet k 0
9 {+ _8 P* I. w8 }& J;;
计作出过评价的邻居节点的数目
  M' }5 U" d# V" Y2 j! Q' s/ iwhile[j < people]
+ j( y( W' t/ E! U$ j2 z' O[
" h: g' m' W5 S4 bif (item j( [credibility] of turtle (i + 1)) != -1)
% h  F( r  P9 }" G- e4 R& ^. S6 v& S;;
判断是否给本turtle的评价质量做出过评价的节点
# D4 |& h+ j! ^$ c+ M" A3 P  i[set note (note + item j ([credibility]of turtle (i + 1)))
# I5 Y  ^  [" X* Z( T;;*(exp (-(people - 2)))/(people - 2))]

, M# u3 M/ n$ y  x. e2 y$ b6 Gset k (k + 1)8 Z/ f6 ~1 a) S' z7 p
]
4 G  D2 `5 T" o5 A) q7 t) }set j (j + 1)
, K. N/ [: E# h4 ?% X]
) M3 i1 k3 T; ~' {! z; wset note (note *(exp (- (1 / k)))/ k)3 ^+ g! r# f3 T- s# ?* v1 q
set credibility-list (replace-item i credibility-list note)* m9 _# L5 ]8 Y9 n, @' w& x; y1 }. t
set i (i + 1)$ s9 y$ \! d* E* ]* ^/ C
]
: H% w- j) D2 k) t/ {end6 s+ e8 ^% `$ d7 A, w& c% `1 h

8 H6 [8 i/ {! t4 ]7 q4 Pto update-global-reputation-list' R1 L( I2 \- o, x; G- w1 r
let j 0
" u, @5 W+ m' }' ?; N+ rwhile[j < people]! R3 {. N3 [1 r& E/ o5 g- k
[
7 K, w% O. \  |# C% X0 Xlet new 0" M4 m" U, O2 b
;;
暂存新的一个全局声誉, j+ Z7 D0 Y0 z2 w1 D
let i 05 O) V; d( t' A  w) ?3 O7 a4 W4 \2 J
let sum-money 0" o- G- S4 J: p' q* l$ P
let credibility-money 0
* Q- a2 H) E. I( Y1 E2 Ywhile [i < people]5 ]3 m4 z* `0 _9 I4 {
[% l4 W; G$ n9 U! ~% j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; u8 K  V6 Y4 |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ L7 E; x7 r; |- c- ~2 N) ]
set i (i + 1)
$ V2 o) ^7 H5 m- g( g, h]8 H$ S/ G( |1 U* Y
let k 0' }" s) F) J! ]1 P9 a8 G" U
let new1 0
( C$ Q- |: B% Y$ {9 z0 ?8 ~, rwhile [k < people]
# a* _& o7 D% N, y[
! ]" r) |- K: G0 J/ [# O4 h( F5 ?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)
7 c) h, E+ x: {; Fset k (k + 1)
9 t4 `) k5 K7 M) _5 ~]: \( I: X; ~0 w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 ^6 Y6 @7 n7 L. ~set global-reputation-list (replace-item j global-reputation-list new)
$ X" y* Z; `8 y5 f3 b% Tset j (j + 1)# p  ^. F6 D, K6 F8 b: X. G
]( A% [: v$ O2 E) r  U
end
, X" D" Q9 }* h) m- X# h1 w& B1 q# q
4 u+ w4 W: D# z; [8 F/ E# P( \; Z0 j

  W) e$ k* m6 [$ |) H/ A8 ]to get-color" N0 ?9 ]7 o. Q6 e
8 u. X4 \" u3 T: B# l; @) h3 Z* \
set color blue
  `. S; M, o( T) L; s; n) u! n' ]
end
# ]7 k: D, R5 Y- c$ j1 v) A. `% P! O" Z2 Q
to poll-class# h" I( Q& @. u& U/ ~4 Z0 Y
end
+ |, c. J5 n3 a; r! v- Q, f
) T% q3 o9 G6 W4 Xto setup-plot1( u7 P" t3 w2 A
9 Y1 g! y! y3 D9 d8 [% }, K1 g, A
set-current-plot "Trends-of-Local-reputation"

1 d3 @; T0 }, X% o! J8 \0 u" t  x3 u* ?. k
set-plot-x-range 0 xmax

6 _. L+ R* j  B0 n8 C1 L! W0 ~3 Q
& r4 R9 A) m$ c" pset-plot-y-range 0.0 ymax
! s! o$ V7 t! v" A: Q  l% W
end
# K& u( [$ C0 y+ p, a! i, @" n% u4 b/ n
to setup-plot2
/ J4 e# z! Y  ~" ~# s" n1 B' a  x( Z- L& o) W! L9 L$ @0 l5 x% g
set-current-plot "Trends-of-global-reputation"
4 C# m% C! u& e9 A9 e

5 c  v: ~: f" G% s6 T4 T7 n  V7 k1 gset-plot-x-range 0 xmax
, X1 Y: ^6 |" G" R

' w6 ?( i. b, `/ O2 rset-plot-y-range 0.0 ymax

- Y  f2 J# j$ Q+ b, f4 _end
5 b) b4 N- Y; v. S' a$ Q
8 y5 G) Q6 N+ m. R9 x8 u$ ato setup-plot3
7 i4 h- J; Z4 j& @# @8 w6 s! R
- X5 V& e: j4 pset-current-plot "Trends-of-credibility"

; m! O" m5 c% j7 P; l- t2 i+ I/ e' _  H6 k+ K, i6 q
set-plot-x-range 0 xmax
+ @8 O5 D. Y" d
$ p/ N( }$ O$ y* G0 V
set-plot-y-range 0.0 ymax
! }! w$ J- b* W  C5 p
end
2 w$ J+ Y6 p1 f( Q$ V3 D; K
* B) |& i9 b5 s% b" p2 R5 Mto do-plots( V% _. k# t4 r
set-current-plot "Trends-of-Local-reputation"
( r; r  C$ y7 h( H: D% zset-current-plot-pen "Honest service"9 ~4 i  X  ^# O3 s
end
& C! x* p& _3 h1 J5 f
8 ?' I1 z  ]& G6 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.% {7 Q, K6 h2 T$ `; A% F, Z0 p
  M. M4 X& u3 b, f; v% Y- y9 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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