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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:1 _- t+ y) {/ N9 G! _, B0 M" i6 X
to do-business ( N# o# A+ X) l
rt random 3607 D! ~4 P$ Y. S! w, [
fd 1
- ~1 G9 P, B0 M8 f$ b8 `7 X ifelse(other turtles-here != nobody)[; Q( P; B! R( |( ^2 W
   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.6 r1 m* _4 ^8 w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , z; M$ X3 n2 y; @. h: s$ v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 s( x. y# f9 W: t; L- m   set [trade-record-one-len] of self length [trade-record-one] of self& T5 k, y7 }# I: l
   set trade-record-current( list (timer) (random money-upper-limit)): x: V6 d& T5 G' L8 x; `
  E1 E0 d6 F: M. z. E
问题的提示如下:
" T4 k9 m( G/ Z" t: A- S" p
) C; [9 U" Q; i( d; @6 y5 Kerror while turtle 50 running OF in procedure DO-BUSINESS
% r( ~% I! @! R4 |: _" b  called by procedure GO; j9 P7 Y; n3 n- d9 ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) {! b: R+ [: g( l0 f, L0 C
(halted running of go)3 C" u% [0 N2 ^+ I* }) j0 Q& D& W

* `  p, x. K" A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~~6 u% s- E# i1 e  q9 p
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! ~/ z1 P4 A+ Aglobals[
) L8 m' N9 A$ u8 T( p. x$ Kxmax
1 O& w" q  @, m# g8 y' {ymax, _0 j$ W& y3 i$ f, [6 V/ M, i6 T  r& v
global-reputation-list0 @7 w: F0 O3 J/ U& m' h7 k

, L6 `$ ?0 E' n! d;;
每一个turtle的全局声誉都存在此LIST1 y! [2 O& d; L# [) y7 t
credibility-list- A' j  ^$ t: a6 h2 ?
;;
每一个turtle的评价可信度8 j+ W) f; Q) x: l' {- j0 ^
honest-service5 ^8 x+ N1 K' X5 s- E
unhonest-service
+ V+ s( w$ H0 Loscillation2 a2 M3 a2 G' ^4 [2 d* z5 f
rand-dynamic( @0 F% C$ F; q+ j
]
  S% g( B4 A& _2 F' f, B2 s
: H5 R) O+ i9 W1 Tturtles-own[" u3 _4 F: Q" i2 \+ S8 B+ l
trade-record-all
8 K% d7 W! Q4 w;;a list of lists,
trade-record-one组成! x8 ~* G# Q( Z  T  T" U4 I) h
trade-record-one. m! c3 i' e' {9 e7 d* D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& O! ?7 g+ R4 o2 u6 [* y3 F% T) y* u
8 _! s# R1 Y/ P8 Y8 `2 ~' n' a! T
;;[
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]]
. Y& j2 I, H; ?; i$ N' O6 U3 ~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]% s+ k7 B9 o4 E9 h& Q5 E2 ?
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
/ O* z" v3 S- l8 X, Z1 a# ^0 o  Tneighbor-total
' r; _+ u7 T, T7 U9 I; d;;
记录该turtle的邻居节点的数目
3 w: e# `, R7 f  `1 r7 Etrade-time. b1 f! h1 G! o" d) L2 a
;;
当前发生交易的turtle的交易时间
% t9 f& k& e9 a0 Qappraise-give
" P' R* ^4 s, d$ ~' B" M8 v;;
当前发生交易时给出的评价
5 t: q! e- n$ u  ~1 `/ Y2 {appraise-receive+ o9 j. ~! f6 s. b7 ]; ^
;;
当前发生交易时收到的评价
3 w8 h' j- k6 |; B% A4 happraise-time
6 I# Q4 ]4 }2 p6 `/ ?" @! ^; L;;
当前发生交易时的评价时间  x: I9 Z5 |* f' d1 K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 H1 z/ Z6 O3 z, s' p
trade-times-total
' U+ H- J2 w0 n- n;;
与当前turtle的交易总次数5 g' o7 y' Y. i; [1 }# w9 P
trade-money-total
- A2 W2 B5 `! q5 ~+ m0 {;;
与当前turtle的交易总金额& x, D2 ^2 ^0 j( D! m, \
local-reputation
7 b; m) e9 J% kglobal-reputation
. K4 T' \5 x% }4 c) {credibility, K, h) u! Z( f7 H* P4 Z
;;
评价可信度,每次交易后都需要更新
" D1 t% p. E4 y* ?credibility-all
1 D5 Y3 O: H% };;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: W# q7 W' ~8 N- d* \
' r1 H. d) |+ 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0.52 q$ A( I/ G: S5 l' ?
credibility-one+ R- W/ s7 o1 _( v% G7 O) I! ~1 {
;;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" Y! S& b# D0 r4 x3 C$ b. `
global-proportion
) u8 |; y, N* O6 q0 xcustomer
4 p5 Y- q6 P/ wcustomer-no
7 U8 v+ D- g/ f$ R: ktrust-ok
/ b$ I; B, q6 X8 s, qtrade-record-one-len;;trade-record-one的长度
+ M' \! y% j3 P]3 ]( G' p& M) Q/ ?
6 n5 }# b$ c' {0 p
;;setup procedure
9 ?" A* G" ^7 A( G2 h$ T0 P6 q7 o# y: d0 a
to setup
( h7 C& `7 c7 ^" w* M4 D1 F+ s- {* }8 l* x8 F1 b, }5 q( r
ca

' k  g4 d- X" j. I$ i; ?$ ~1 B% K% m& L! c: N* g" M/ Q2 w
initialize-settings

! {' r) q$ d6 P. ^1 f9 J, z, ~: X' d9 H) l
crt people [setup-turtles]
: g" ~2 Q3 x2 `0 e
* p8 \3 y( Y, H
reset-timer

# Z# }5 C$ u5 I0 Z! W
, N. A+ T! Z* f+ E2 Kpoll-class

& G7 ]0 v0 j/ T+ h! H! }. s$ B9 x3 `) ^! ]% y( J2 P6 t
setup-plots

9 b$ E0 W( ^( Q6 X5 g& |, Y  x; d6 r
do-plots
2 J; f* j6 Z0 `6 _
end
/ r! j7 v2 b& ?) V7 T( @3 o$ z2 c0 u5 ~- ?( G/ X1 b/ e
to initialize-settings
, u! s9 ?, G3 z
9 R% l, m9 h4 {set global-reputation-list []

2 f' N- S- b8 o5 d* _& Y2 m( H0 X4 H
7 P! O" z# [$ S* y7 Wset credibility-list n-values people [0.5]
7 u; y0 b+ `8 M3 `% L( h

! c6 O7 T. T6 `3 U4 d) ?set honest-service 0
$ ]$ T7 w# ?4 L1 f1 p
7 p6 m. ]- X& a
set unhonest-service 0
7 O9 M2 U; m: F; |

2 E0 u: J: n# }) eset oscillation 0
7 C4 a) [/ P# P. b, ~, R: z

& `2 J- G4 ~) k" k% K+ m8 G% Yset rand-dynamic 0
. Z0 ?5 f3 M  C0 c( ^% _/ Z  Z
end
6 R9 }" X( |2 E
9 }0 s8 H# Y$ U/ D! c3 x6 ]to setup-turtles
* z( n4 S8 T% B8 mset shape "person"
- n7 Q" G$ _) y  w; qsetxy random-xcor random-ycor
$ U1 Y( \1 a2 C# {# Y& Fset trade-record-one []2 ?: g& e2 Y, M: [: v9 w) p$ s1 a
1 X6 g5 n$ y1 `, r( B
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 _8 m) V$ R* O3 B8 o" [0 n
. l1 P4 F- z/ S7 u8 ^
set trade-record-current []
, j* x% W% r' L( J: \" d: |# h) rset credibility-receive []/ m1 C3 ^! \* m5 a2 J- p& y# m  ]
set local-reputation 0.55 o9 ~; H) |. U5 Y$ B$ U7 X9 J4 D
set neighbor-total 0
: F) q. n& r9 g  b6 Sset trade-times-total 00 L2 _) A) e8 W( f7 n% l  r
set trade-money-total 0
+ N+ N6 n1 r8 [4 ^# o- Kset customer nobody7 T" c) a! j4 K$ J6 B" {8 A
set credibility-all n-values people [creat-credibility]
) y2 d0 i3 i/ G3 q; o; g. oset credibility n-values people [-1]
6 k+ ]& E) ~- I  Xget-color
6 ~" V7 {$ S/ b
/ f7 i& d: ^- M+ \% A- L
end
6 c- V- f2 c9 `$ A6 u+ g' H- Q' o1 X. e5 E- I: p
to-report creat-credibility6 j5 R4 y* y; o- z/ A+ P4 K2 A4 X
report n-values people [0.5]
% ^; P! U# L* g9 cend3 h! E& [1 H( f! a2 \
( f, k" Y$ {; P2 t0 w
to setup-plots7 ~0 f5 o- V( a! l
; o' v, y. o" F/ n$ c% N
set xmax 30
7 r, G: \# M# }3 K; j
  x, v( _% J/ f7 k3 c
set ymax 1.0
$ ]. n! D& I: L4 N: g* H# E

1 V: y$ f5 m! Q6 Lclear-all-plots

, ]" u' F9 Y9 N
5 L( m1 @6 d# f9 wsetup-plot1
* w: {6 K% ~0 j

/ \5 p  c7 F. R$ F3 h5 C3 Y: |/ @setup-plot2

% ^) q1 s! D" _% h2 D2 q9 \! `. Z! G' S% h8 D' S, Y
setup-plot3
& }  W& @" d) S. b1 _# b8 E7 X# P) Z: B
end
* Q7 Q/ T% m! @) S* a) x8 Q; \) ^' Q. M9 I
;;run time procedures
- d/ U  H% V# X# m) _7 j  ~+ U& _" t
& y/ t/ H  G; Vto go
: v  \5 r" `( Y4 X, u! Q+ |
8 A- F+ i6 \0 F# v& A5 }$ ^ask turtles [do-business]
" U1 ^# d' ?- |9 d6 m% D" ?9 R* k
end( ~+ j% t: h) ^4 V
5 Z1 a3 |( F$ K; Q
to do-business
3 }, z! V/ E+ b; S  w
( U5 X& m+ E. t3 A

( e7 O# e- ]7 y4 |# P1 D6 y( C0 srt random 360

, ?, h. m: {$ D/ K, t  c8 |* `5 t( h4 y3 u" O
fd 1
4 r' q- H, i3 x% |
: {, L4 L/ K# P# O3 ~, T  Q& {
ifelse(other turtles-here != nobody)[

- i7 x5 ^9 ?; N; Z! }3 v& ]
+ m, w9 [: |% C& h$ b0 Vset customer one-of other turtles-here
9 X$ ~, q) i& M# t, v: ^

$ F0 i9 H* a/ q9 Q$ T5 H;; set [customer] of customer myself
6 ]4 q! l1 {# H, Y% A* N7 V
- @/ d! p' ~7 A+ v9 z' v( w$ N
set [trade-record-one] of self item (([who] of customer) - 1)5 U( y' Z4 b* k; V
[trade-record-all]of self: I6 ]! L; C, H: {0 I7 y5 @
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 Z# K9 `! I) g' K. D; ?/ `7 q( Z! G  C7 m) v; P2 L4 R) E! r
set [trade-record-one] of customer item (([who] of self) - 1)
/ n5 _6 f! G7 [6 [/ h8 q$ |[trade-record-all]of customer

# R7 e" @: N9 x4 [  W
2 z2 m- I9 O  B) }set [trade-record-one-len] of self length [trade-record-one] of self

! N8 h: O4 |1 @; |/ T/ w- v( Q4 |# T' g& L& U0 G
set trade-record-current( list (timer) (random money-upper-limit))
0 l! q) C) R% t* X1 r  z% M
6 c' M5 ^5 \: p& l/ X4 T2 E
ask self [do-trust]
8 m! |6 _6 G6 ~;;
先求ij的信任度8 r% k5 P6 G7 K& Q- L

1 C3 n4 |/ I" V' ]! m* uif ([trust-ok] of self)
' ^/ c$ W1 i" B; s: [7 _4 R;;
根据ij的信任度来决定是否与j进行交易[7 _  K' l  B7 L" t4 [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 x, Z: n, t2 c8 B; g  Y) t
2 J( d' {! }4 ~# }( K[
4 r* _2 C) G, d3 Q
$ O2 Y7 p7 n* D* `* j0 H8 z& I# b
do-trade

8 Q4 d8 o: M: B
& s0 |2 Z$ g; i/ Z0 @& l7 vupdate-credibility-ijl

# w/ t9 }7 A! r4 F) l
1 A! p* R- G5 z/ v. \update-credibility-list1 q3 k* E, d# @" Y% P/ ]1 {
' d7 L, i; C# _; g' {: }) v
& N; c+ a5 U  g5 K7 O2 H
update-global-reputation-list

# s. Y4 j1 M' ?& q$ p4 p
* X! o5 E5 x4 @3 D# j- i" N/ G  lpoll-class

3 {+ `( X2 u- D7 \; C  A% H6 l; W5 C1 g1 ~) i& }
get-color

0 y, m4 l; U. N" v+ y) U; S* ?( R5 ^2 \( {5 Q5 L& y0 `3 ]
]]  Q9 f2 @$ K+ y7 V. F; a

/ J+ x2 M9 l. {  q;;
如果所得的信任度满足条件,则进行交易
8 n/ i- C: B. N
* `, g, m' _5 b; S, e[

! d. Q8 Q& E6 k0 j
, A6 H, ]/ h, b/ x" d5 ^7 rrt random 360
7 V% z( m8 R. B1 i8 P

6 ]1 _; v; k" m8 Efd 1

! M2 P; ], p5 b6 b% @- c
6 d9 A6 Z$ C+ J. {( K4 t2 P( Q: s3 C]

. r! o3 X) @& e) \
" r* l9 u/ m5 r. h7 e4 wend
8 b; U5 P6 ]5 O- r$ r+ W8 T

2 T6 @1 C/ d9 H, B" h0 qto do-trust
& u0 N" h) ]$ @' [3 T/ k  Qset trust-ok False
2 d: u; {& v0 |5 _, F1 I
" x" \# J$ T  I6 j* t

; ~9 d& S* ]5 Tlet max-trade-times 01 {0 h9 b, I) _8 b
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  x. q" Y* n8 x$ F9 u  K! rlet max-trade-money 0: R3 p. ?8 p  @+ N; g5 K2 ?7 E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ T" J1 b( E# u  |: n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ b) {  y1 a- Y. g! y/ r  }. c- O+ i( o7 w; A( M) O+ Y

* L+ J& _# z- h/ ?) Z8 U1 r! sget-global-proportion- l7 n( i5 {, N4 ^* D
let trust-value& |( m( H# {/ P" X# c' e
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 o3 A  K9 w& d" g/ Tif(trust-value > trade-trust-value)
* E) W, K: m6 h& ]/ k[set trust-ok true]+ _" ^' ^- d. c
end
$ s: `& P# h" O  H$ D- O, T! {8 H8 J! S5 w2 b, ]
to get-global-proportion5 U" j* ~  u6 i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ S( l: d) [& A9 q/ q
[set global-proportion 0]
& h4 \! C( f: W+ @) I[let i 09 k- _& V, }+ i0 [
let sum-money 02 r0 Z! t- U' W; w- h5 _
while[ i < people]
# U, j5 J& [4 Q% j5 O[3 L. \2 ?# R* x  T4 i9 Z7 r
if( length (item i
( j( S# @' P, c' ]4 i[trade-record-all] of customer) > 3 )

; Z0 L5 w2 }7 R" }1 b, k6 L) U[
. r2 Q6 R7 e3 a% kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) {$ F# p  ]: w- ]+ _1 Q5 w
]% n3 F$ F: E3 F+ B' G$ I
]
/ w; F) @( W9 E) ?let j 0$ K  W$ Q% d2 I, A% r' h- D. y
let note 0
& q/ U9 D3 U  g. x4 B6 Hwhile[ j < people]
2 {" {# ~, t; T1 g1 }- ~0 G[
, y5 w/ ?2 L8 F% bif( length (item i
4 h) r- Q8 N2 O  K. E. R1 h[trade-record-all] of customer) > 3 )
/ V) A" H2 ?0 b: C
[
2 Y( Q' z  v# p% Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! z  B9 z2 b- M. t. P; X2 w; }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! i9 }5 \; K9 h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( A- g' N( Y' n6 B- _4 c8 w]5 r# K" F3 R3 W0 A0 G5 C
]7 Z( _4 a4 m; e' k/ r! D
set global-proportion note$ g7 ^* o  R' `( h; P1 y
]& d9 m  S6 [) @) ], C" D; N
end/ W; R# Q5 w. k( H4 S
. D" Y" [" p0 K+ v" Z
to do-trade! a6 N9 Z7 L" \8 w" N; Z
;;
这个过程实际上是给双方作出评价的过程# o& t$ c# d1 N' R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ Q$ L: k- y& m3 _- h; `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ c3 j* o) U* q3 m  ^set trade-record-current lput(timer) trade-record-current
" h4 _" W( @9 U3 i# x: S# h+ g;;
评价时间2 B0 m. X* m5 z2 l& y$ x: v
ask myself [
# X8 R* X+ L  |7 U% t' h0 Bupdate-local-reputation
$ Y: N% k9 Y1 l0 K2 t* r/ aset trade-record-current lput([local-reputation] of myself) trade-record-current
) E2 V7 X+ h+ L& p% K2 M]
: v6 L% [/ a3 nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: e+ n) v8 v; r( k3 };;
将此次交易的记录加入到trade-record-one
/ q( d+ s) H- j4 {& |4 O9 U, _( Y( bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ k1 t; p6 ]* A( r7 Q5 |' b( N1 |let note (item 2 trade-record-current )# V6 e1 l7 W; g& K1 I3 y  ~
set trade-record-current/ Z. i' |& {' W7 V* Y
(replace-item 2 trade-record-current (item 3 trade-record-current))
: p/ R% }0 G; L: J9 a
set trade-record-current6 U9 f) F' l; C, R3 P  ^
(replace-item 3 trade-record-current note)
' [/ L3 l5 ~5 _: j$ F8 y" u6 ]: U5 Z# N& p) B. i

% S* e: C  h- p- [# ~# Mask customer [
& _$ w$ @' e4 ~# d3 Tupdate-local-reputation6 k% W# u7 |" S
set trade-record-current/ Z( H1 i- ~2 t4 Y9 a, t2 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; {* ?7 a1 T. l  z]/ b/ k8 b- X/ \# _" \6 D+ `

% `: X. B( @, s! ~2 I0 \
( K4 Q' d0 @) z/ @6 ^' r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) ~# O! W7 V" _. L. ~! D
6 T) s7 X9 k0 N1 O# {* S# L/ t  T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 p* q* W& R4 P9 Y7 T
;;
将此次交易的记录加入到customertrade-record-all
. `* B/ l7 |4 v. U8 v5 q( Send8 }* C1 {5 y4 y
$ k: Y/ L3 k; e  X/ j( c
to update-local-reputation5 ]' P+ D/ Z- {2 w' t
set [trade-record-one-len] of myself length [trade-record-one] of myself: |- \" l8 x9 \: d

% T7 d! F- k; F! [' O
6 K3 t$ q* M; ?6 t+ K;;if [trade-record-one-len] of myself > 3
% `& l4 d5 u7 J# T' N
update-neighbor-total
) p, V# g0 w5 P; L;;
更新邻居节点的数目,在此进行" ~: `# S& K3 _" F; \4 Q4 \
let i 3
/ F2 L, F0 E2 A" r4 ?let sum-time 0
& i+ L! o9 G) o7 D6 t( rwhile[i < [trade-record-one-len] of myself]
  k& O# ^, c% a+ b, n8 S  {[
! e8 o; F- @8 i6 Z2 D, t, }4 k/ I0 I. cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' c- z0 z5 Z4 ~0 Z
set i
. A% b+ Q7 q" J/ ~& p  v4 C6 g( i + 1)

: x5 }4 l+ m+ t& E3 L8 o]
, _3 w/ b- J' E5 l8 e( Tlet j 3( q! T  z( R$ G: v6 c* B: H
let sum-money 02 Y8 D/ a- u1 Z' v3 r
while[j < [trade-record-one-len] of myself]
* F( {/ L" L2 ]3 x5 @7 i/ W9 l[
2 k$ h7 V, Z) `( ]+ k  tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 N8 I7 U, ^  C- L# c& T
set j. `9 |, ~0 ?0 _4 [
( j + 1)

! `0 f- o( Y1 Y; p/ Z]
9 w! K* H- ?! i6 @" t5 @6 w0 Xlet k 30 i* I1 ~' }* v$ \  t0 X
let power 0
5 |' ]* t6 J' O# T1 M4 A# z' elet local 0
' `; n8 G3 T; P- `: n0 J: I2 X' rwhile [k <[trade-record-one-len] of myself]$ e/ {7 }5 q$ {
[
' J* [, b, h/ w5 J3 jset 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) , t% l" M- i' i' d% o
set k (k + 1), W! g$ r4 S4 |
]
+ r4 w0 C9 R1 Y- s& ^set [local-reputation] of myself (local); d! m/ M/ A. t3 v. G
end4 J# x6 M  b% ~6 k. v: e* B
$ J2 e5 d! N0 y
to update-neighbor-total3 l- N9 v9 q  Q/ t1 e
5 Q! D  \. e: w7 F  r
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! c# _* D# E8 d9 U. z# Z( u
5 d# V# w0 D( x
7 q; f6 m8 M, W/ E* ?% V' C" o
end
7 w+ x; l' R4 N. f$ A9 e
$ v- w  Y0 @# }3 y- vto update-credibility-ijl , z. U5 v- y. _. L
: ]$ i! ?& Z8 d0 q, [1 }' F
;;
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。# O7 `( y+ o, v4 {0 V" r1 I4 o
let l 0
0 P2 ?! K: ]. A) J8 k" Wwhile[ l < people ]! b4 M, Y% x6 e1 ^: 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$ v' q5 L8 Z! A6 k4 T) f
[
( T& ], h; q/ y/ P9 Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer): Q- I3 D" I' n' D/ i- n
if (trade-record-one-j-l-len > 3)# D2 s" z- E4 k& ?8 X( i# ?
[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 |. }2 V- o, x0 r/ G+ v6 ]" x2 E
let i 3
; Y. w6 Z2 ]9 M- q. h( G  ?let sum-time 0
( g! T' M. v) Q( A2 }) h0 Vwhile[i < trade-record-one-len]$ _4 x4 ]! N6 g8 ?  I4 _* O, S% e$ d
[, s( ?& X: A) R: X( k( \/ H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: Z( h5 {7 L5 C8 Y5 h  o/ [$ |2 Uset i+ h; O) \2 @+ A$ Y5 d& }
( i + 1)

+ P3 C6 w* E4 q$ c( }0 A]- X' i% n0 O0 ~0 _/ q4 C) v
let credibility-i-j-l 0
( e% A1 B/ t. Y* i% q;;i
评价(jjl的评价)
$ j# G& }% N$ j" d( blet j 3
+ G( w9 G; \& K. `let k 4
' Q0 _  h4 x; E! V2 n: N% R" ewhile[j < trade-record-one-len]) X0 P' L4 E/ z
[
3 h: A( `; x' `9 Fwhile [((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 l) p$ Q  M* w0 {. `& `; S0 Hset 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): D9 w( |2 ~+ [9 |2 o4 Z) G9 c9 V
set j8 g! D2 s9 X+ e" K
( j + 1)
9 X4 f1 C+ w& P7 j8 m
]7 j' D8 Z) Y# s
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 ))
: N9 ]) @2 }+ P6 W
) p& p% U+ s8 f) l
$ o/ v) [9 f7 |0 T4 K' Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 ~" g( c2 I1 L% k;;
及时更新il的评价质量的评价" I- S7 ^& v8 q8 ]+ a- y* E' g$ S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ C+ ~' @4 e: ?* w
set l (l + 1)
0 m5 w, ?: v  q3 j]8 F) O, |4 h8 e9 w4 \+ ^
end: V- U( Y+ E3 B( i" Y, J

  i$ K+ M  _, w9 l3 ~" Gto update-credibility-list
- ~& n8 e8 E7 Q1 T' g$ ilet i 0
* @6 P( f: z) C+ v! Gwhile[i < people]
  A- B6 c# w) t2 A- N3 s[! S7 }: U8 }- s1 I6 n4 W/ T0 v# E( W0 t
let j 0
6 C) I, T( B- b$ {0 i  ulet note 0
# h+ D3 D+ q3 z2 Y8 D. d4 K( ?let k 0
9 I, z) i9 x, p, ~1 J;;
计作出过评价的邻居节点的数目
" U- ~+ J, I0 s7 D1 g, mwhile[j < people]
$ k& d2 O4 C' J( k/ q[2 R. _8 Q: L* c* u+ A
if (item j( [credibility] of turtle (i + 1)) != -1)
; S1 j5 ]! r* ]8 W;;
判断是否给本turtle的评价质量做出过评价的节点
$ b5 }( |* O/ j  [8 k% D[set note (note + item j ([credibility]of turtle (i + 1)))3 m# w& ]" k% h. F
;;*(exp (-(people - 2)))/(people - 2))]
' n( Z8 |" w- e# t: U1 k
set k (k + 1)
6 A& ^; L. y  v7 [) ^; K]
! _4 {9 ]% ?" L7 D# Hset j (j + 1)+ e6 T4 D6 ?- Q4 M( j& N9 Y2 n" x( m
]& r" C. W6 w$ T$ z
set note (note *(exp (- (1 / k)))/ k)
7 G. X6 D* j7 Zset credibility-list (replace-item i credibility-list note)' X$ d+ U2 }. g7 m! D5 S
set i (i + 1)
  S* C# f" d9 ^' {2 V]
* f* e& `4 {- ^8 L4 |end/ O7 V  L! h4 ]$ v7 U+ U

* w* ^/ h( B/ @6 g+ X1 I: Q7 wto update-global-reputation-list; m# g) N2 G6 o8 z& B1 a" h
let j 0) z% c. ~* b1 T( W3 t  d# D# ~
while[j < people]
' ?5 a4 o' M. X3 Y, W[
' h) T- r- t' Mlet new 0; A4 L9 l9 k! ^; Y% ?0 j( J
;;
暂存新的一个全局声誉
; G/ w& M( K$ {0 L+ X% Klet i 0
6 U5 y" w( h& m" g" c- ?let sum-money 0
; N* X- @; T$ |: y6 jlet credibility-money 0
! G% W9 n. M5 i+ W3 ]# W( Nwhile [i < people]
9 E4 ?* A% H$ r! P5 T- A[$ P( R" N) W# ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 x% u) a7 d% `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 O3 @4 K1 N  P# I" Qset i (i + 1)! A7 X( j7 ]. G
]. J8 |7 g4 s" F$ x% M, }0 }
let k 0; N' y, E# T% d" a7 n  M- V
let new1 0% g$ ~0 K7 d( |* J& C4 j$ r
while [k < people]# x4 X) U+ G0 U, C( |5 i3 @# m
[
% m4 O0 z0 o) u  sset 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)
; V9 x8 p# _: J/ ?% D8 Rset k (k + 1)# {9 O. ~# @  Z# B* @4 F* R4 m
]
4 J* a0 ?% C9 b: Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* H$ @3 o+ t. |+ ]( m5 ^set global-reputation-list (replace-item j global-reputation-list new)4 M) \1 C2 `! k4 P' f+ C9 D
set j (j + 1)0 f7 w  o0 F: M/ t& [
]6 R9 F. t# J1 q8 b
end
4 y! V$ l# S* x6 M" A/ ^, L
* q3 l, ?. O- M! B' ^) y; [3 R- K  ^3 I

+ f, a! h4 r5 C5 l4 }* D4 qto get-color
9 f0 [4 D; X8 u5 d  H
4 ?1 v  G! r, o3 _1 Dset color blue
; T/ P5 C' V1 K% M
end8 m* V/ j: `  E5 R

5 p, u8 ?& B- G0 x7 M* `to poll-class6 r( R- {8 |# f7 R; T$ p% A2 m
end+ T6 C7 E( E1 a, ]0 [! V
1 s4 Y$ G% v% w  c
to setup-plot1! p9 P9 p0 V; Y/ [

* ~4 ~% Q3 x$ @9 }1 D  Z) Vset-current-plot "Trends-of-Local-reputation"

$ \3 E: H# a# Y7 X6 M; i0 J3 z% B, Z7 w/ y  `
set-plot-x-range 0 xmax
1 K9 f9 d( V6 Q8 u
$ z3 E; r% _  D8 H
set-plot-y-range 0.0 ymax

1 ~2 `: r3 I# [0 L: t/ c; ?2 P2 Kend
7 A; W9 [! f, U( E! M6 A6 d+ Q& h- G7 V0 o( S
to setup-plot2
, c( I9 x3 j, J9 T& R2 L( J2 k4 K0 P
set-current-plot "Trends-of-global-reputation"

4 `. _$ ?9 g2 n/ A# r6 o, {9 C" D9 Q7 ?4 X, z! K, {
set-plot-x-range 0 xmax

' n+ \" [  I/ u5 E$ M- E
$ g0 y$ K# Y1 X5 uset-plot-y-range 0.0 ymax

: Z7 w4 T4 J; ?& D3 S7 v' wend/ v. I* N2 U; D0 v# X! d3 d
8 K" b1 f/ a) r: T+ ]
to setup-plot3
$ v1 I! L4 D7 k. C) S, R5 x- l% T- f3 C" U1 k
set-current-plot "Trends-of-credibility"
0 X& w5 X' E; b# A
* W$ u: h7 e7 ~1 M. P" `. s+ U
set-plot-x-range 0 xmax
: t6 n6 B" s+ J8 P

1 u0 q+ _" ], ^6 n( Gset-plot-y-range 0.0 ymax
: V5 d9 ?2 w0 T4 {& c: g$ S
end
, ^! l5 p9 q4 F" i! L8 N5 f4 X: D) o( S# v4 ?  T
to do-plots
, c* H: M" Y9 x& [! G2 ^! Fset-current-plot "Trends-of-Local-reputation"& O- J( \$ j. X- `0 j4 J
set-current-plot-pen "Honest service"% G. T9 ~7 P& q( K
end/ e$ q  ~4 y: S  g1 i5 l
# d7 `* h0 M, A2 l, D
[ 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.
, w- l& u' D! ^: g: p3 [" J* a; u) m3 S  w
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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