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楼主 |
发表于 2008-3-18 13:10:54
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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* [9 ^2 v8 m; j0 V2 @' {- b9 P
globals[
- [+ O6 r0 ~+ H! l3 ^- Wxmax
5 p& x( |6 M( Y/ R3 N9 b9 G! A) rymax/ R3 R/ R; E! x) t9 L' L0 T
global-reputation-list
* u' y6 g$ f0 V9 B' B& c. a
: Y4 _ m) a5 f- B! v. F;;每一个turtle的全局声誉都存在此LIST中
) C* G3 `# h ]+ b( mcredibility-list
/ A( y& b# p e& b I; a2 k& ?5 y5 p;;每一个turtle的评价可信度
+ [5 e& g Y. s4 ^; F6 h p) @honest-service8 T( a8 E2 o j' c! N
unhonest-service$ M4 b1 Y+ b( v* k' E8 z
oscillation
. O. r. {1 }; O( p+ Wrand-dynamic
' k4 ^' c, T' Z1 C2 M X& }6 e" n]7 m4 e+ P5 c$ y
1 u y( u- n( l! u L1 h3 |
turtles-own[9 `4 h$ }$ X3 G6 v- W7 a4 N
trade-record-all
; x' L; w1 n2 r: B( ?- i8 \( O;;a list of lists,由trade-record-one组成
5 a$ b' y* y; i5 B" \0 W% Ztrade-record-one- N' Z0 F4 Q3 Z% j& H
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录
! H* l X% W! y" U
$ G2 t- o" p/ N;;[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]]
! P9 Q" S# A+ g/ o" U! }& Jtrade-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]
- Q: L! C i: \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
) x" x: u o. W, Xneighbor-total6 F2 ?8 \+ A1 O
;;记录该turtle的邻居节点的数目
n" t6 u. O7 |& D$ M0 Etrade-time
, z. `/ D( Q$ U n+ E: t7 u3 L;;当前发生交易的turtle的交易时间
% n; K; t. @: aappraise-give
. D8 d7 D6 n* N4 v;;当前发生交易时给出的评价5 |4 q3 {7 ^ f
appraise-receive
o6 c9 W% | j) b+ U. c;;当前发生交易时收到的评价
* E/ `6 k7 _( b& N1 Tappraise-time8 N9 T; C V2 ?' `
;;当前发生交易时的评价时间* I0 y/ z' @2 m: h! r! q& H3 O% P0 j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ V2 \$ e! b. w* }
trade-times-total
8 i1 f1 Z3 u) R+ c% d% T j5 c;;与当前turtle的交易总次数
' V1 f2 p, Z; i! t3 Ttrade-money-total5 E$ d& }2 N U; L
;;与当前turtle的交易总金额
3 B: y& L1 C- K5 O" _, ^: rlocal-reputation
$ G `# F, b' o. `9 T0 dglobal-reputation
1 F& M3 G/ q1 v7 j. \0 m) k% G+ @credibility# w' N y$ _, H6 J
;;评价可信度,每次交易后都需要更新
0 I5 a% a1 y7 |0 a: k# pcredibility-all% z$ l6 S \5 U, ?: N* X2 d# w
;;a list of lists,由credibility-one组成。[[1对j的评价质量的评价][2对j的评价质量的评价]……[i对j的评价质量的评价]……],其中一共有people项,根据3 M* Z: {7 b2 Y& V3 v/ G
# _- S) y- @4 J# 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! |4 G& k. d2 @7 r9 C8 D. T$ N- |
credibility-one
8 B0 e7 S8 H& M! H Q, I+ Y;;a list [i对j给1的评价的质量评价,i对j给2的评价的质量评价……],其中一共有people项
! U6 K! \7 t" j: v- \, X0 X rglobal-proportion
) V7 C" q y/ D' C) `+ Q1 E2 _customer
) n: W7 j8 T5 `5 a. Z* ~2 Rcustomer-no2 x% ]; K, p7 D1 z1 J8 ~
trust-ok
% _5 w/ f8 V9 M4 ptrade-record-one-len;;trade-record-one的长度1 E! |1 K4 H8 K6 x" f( l5 ?
]
( B7 z: W" [: e
; f$ B* t8 `$ f8 s;;setup procedure
0 O: X# F$ x" Q
5 S& y4 J: W8 N Zto setup
5 m/ S( f2 m, o4 t' b" G, W' h" i$ C6 ^
- y$ ] E+ V0 T- d: Yca
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- z- `8 I2 f1 v$ linitialize-settings% Q# {4 S1 X8 q% U
( q4 {! o- `; L. l- t0 K
crt people [setup-turtles]
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reset-timer
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+ K; ~0 E: d) npoll-class- l0 a, I' r5 Y$ v: U- _6 p6 g9 J
! P& y! w+ k" u0 @) ?/ \9 X
setup-plots
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do-plots$ ]! B0 a/ o9 x$ D" D5 h
end0 z. V$ j3 C; V: O
, y" |0 N( j! lto initialize-settings+ L; T# k( ]0 f r d3 Q% S
) r+ K6 ?3 d1 W2 _set global-reputation-list []
3 s$ C3 H ?# s! o- `7 A
0 k7 I0 e5 _8 a6 gset credibility-list n-values people [0.5]
* Q% p* e; \+ b4 r/ [2 o
& J S3 K( v1 b N3 p! n: Xset honest-service 0& T x+ p. Q: |7 b L9 h: V; W& j+ b
/ T2 _, `6 g- P5 e, yset unhonest-service 0. h4 D* H5 d8 }3 [. ]( B
" P3 m- p8 D$ z. c$ H+ O+ b& hset oscillation 0
& c' w7 O! n) c: H1 b4 {% L3 `
7 t) W2 h5 B* `: P8 }4 qset rand-dynamic 0
, [/ x3 K& c5 `9 z6 Dend! k7 Z. o1 X( }4 j I8 z
5 O/ H9 t- v# ~8 m2 Qto setup-turtles 0 ?" b' f7 z1 Z7 H! d; h( N
set shape "person" O( l2 K$ A( H: T
setxy random-xcor random-ycor* h# Q7 b5 v% f$ ?, a1 R, C7 S
set trade-record-one []
$ ]5 |9 X: \. s% ^/ S9 Z8 i' l- R! Z" R
set trade-record-all n-values people [(list (? + 1) 0 0)]
% Q7 l% m# U; M6 V2 K$ K# f/ J2 {: b$ _6 d# S8 r7 F& A2 A8 ~
set trade-record-current []7 k" C8 B1 j& v8 O( q
set credibility-receive []
5 ?+ P) D! g4 W- L1 w# A3 eset local-reputation 0.59 }1 a4 ?; d% @) S- ]1 q5 X
set neighbor-total 0( P' u: F0 ^9 m+ F" n" R
set trade-times-total 0
( L) e$ e. R: e0 t4 Xset trade-money-total 0
, X# d6 `1 H( r5 B( I+ cset customer nobody
- t! L. w, }/ Bset credibility-all n-values people [creat-credibility]% u, ~7 ]9 h6 H+ \( J6 j
set credibility n-values people [-1]
, \' R8 F6 `2 b) R( W# v0 j% `/ k- rget-color; B+ z5 ]# t/ d( R7 B( J9 ]$ t
0 h; {) z5 _! P6 d
end
1 Z9 [! z& K' F8 V# C
7 O& W% M) D. q; y) `* sto-report creat-credibility
( V9 X2 ^+ i% r" s# c3 i0 V ?report n-values people [0.5]2 s# D) f" [- v' P8 T9 T. u
end. s# P h: Y' w; R+ @$ Z& v
( h3 N1 B' }; B% p0 eto setup-plots9 M$ _& t" H b, ]
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set xmax 300 [: t: J8 _8 f& P, b
- g, j) z$ I5 V* cset ymax 1.0, `3 m/ F+ Z# a
8 x6 q; X, X; Dclear-all-plots( T0 F# [# m( U, A
2 I1 a( ^6 @% g1 l" fsetup-plot1
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A( Y1 N; u* R. H: w9 ?& fsetup-plot2& j4 c1 T5 |0 n! b. v5 |/ b
5 T4 S d+ g/ Hsetup-plot3: I! y( L" o. m
end- o, v1 K" @# x( V- b9 ~4 T9 ^( C
0 m# o2 x4 Y; t* }1 x;;run time procedures
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to go
1 S7 v7 X4 y0 ~/ X) ~& H' R0 l" ^9 E! @ l! j9 I% O3 v/ u" B H
ask turtles [do-business]% x# X/ k5 K' X# n) L
end
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to do-business . v9 R1 T* v1 V$ P* C
9 j2 ^( p7 R. |( L# K
: G9 j2 G" U0 x, |rt random 360
- R' S* t+ M+ e$ L
$ ~4 N# O' w; w; t# ?! Dfd 1; f* }9 S- T4 g4 H9 G
% p! j6 s8 H. B9 F8 Gifelse(other turtles-here != nobody)[/ x$ Q$ ?9 b; p0 p" ~# d
( d9 _! ~0 O2 d- P" L, p
set customer one-of other turtles-here2 Z! a% o" Q0 X
% j" z! R, j' L4 O* ~" ` s9 U) i;; set [customer] of customer myself
" Q( R, B- f- Z5 q, `. h
* c& ?4 c* E4 \, N) D& n& Jset [trade-record-one] of self item (([who] of customer) - 1)
3 L- E" f1 X/ {* ^% O' W[trade-record-all]of self
* Z9 Q8 @. n( o6 n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 j9 n( w* N) e0 t6 t' A$ k! `( B' z9 E% Y+ e! a% d. h! T% Z
set [trade-record-one] of customer item (([who] of self) - 1)9 M( G6 p! m* \: t# N
[trade-record-all]of customer& f3 F6 e1 a& h H7 W7 _$ T
$ ]+ J4 R: j4 x$ v. {set [trade-record-one-len] of self length [trade-record-one] of self
% S) ~* Z- q( a; g" U: R/ P# ]+ L2 r1 d# e( r: `$ a
set trade-record-current( list (timer) (random money-upper-limit))
- M* @7 _/ r4 \" U! r' B, Q
$ M& t- ]3 [. N% j1 Qask self [do-trust]
1 a3 G" X9 b/ F1 D- Q$ |;;先求i对j的信任度
; m. d5 ^# \ r c# x. {5 D5 N& r [4 T/ L, \# m
if ([trust-ok] of self)2 F- _( r3 l+ |# x: }
;;根据i对j的信任度来决定是否与j进行交易[8 [4 i. F0 w3 f/ R$ N8 q
ask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself) y: `% _% m; J/ n
; z; w) \3 p+ c[9 x* K7 o& m, ~" h( r. y
+ ?. \: ~' ?. R$ H: _& r
do-trade# Y2 X1 w& R: @2 v5 Z4 x: V" s! x
2 F C% R6 R2 ^" F; }/ k: N) C
update-credibility-ijl* N& K) T# X- w Y
9 x# g+ n% K8 }) s$ Z
update-credibility-list
" L: @: ]6 g- ?. P5 L f6 C1 }5 X1 @2 ~) b5 L! c" ] Z& t
0 f2 \, A$ G* t* S, A0 fupdate-global-reputation-list
$ W; x3 E- [: @( f4 S* }4 Q m# w0 J$ M( n
poll-class
5 F" R- W( f$ W. c( V) D) V/ E& T7 d' W9 v6 A" u n" a+ k' X
get-color
; X) w% u3 n" K+ Y9 `$ X
$ Q+ a7 n* M; h9 R+ U/ m* W]] E; H5 _$ q4 \+ @6 y
8 R# W. i4 y. t k% V2 i/ C
;;如果所得的信任度满足条件,则进行交易5 ~3 U/ B2 \: V5 V1 {0 P3 D) d+ ~
' H- K* a) q1 p4 B) w, \( c) x[
/ ~$ X6 e7 S% y) V" U9 g" ^* M7 d7 I9 [0 E, f U
rt random 360 `5 z6 Y0 D. D$ a; f5 T; i
+ P' L. C3 W/ u- `fd 1' B# R3 n& a2 R" ~" m& c
0 i0 B) ~3 S: D0 F* K4 z
]
6 R) |6 F( S4 F* i! R ?: D; O- b8 d+ b' M# U& G5 ~$ `( }
end3 x- A2 W6 E6 \8 W% D+ \; q6 g* H
* t) I+ `2 C2 Z* i$ ~to do-trust ; O( ~/ q7 S" n3 _1 Z1 E
set trust-ok False4 ]6 w0 E+ y3 q& i) n+ o4 U% C/ k
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let max-trade-times 01 p; y5 _. c4 v% r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! {7 v q& B3 u& G( h7 k
let max-trade-money 0( ? H/ f* m) h( r+ z6 Y: u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: h1 o- I$ _5 ?) _8 B# Q, K' i! Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). N) G3 Z0 b* H+ n4 h
3 r% d& \/ O8 i
/ { }+ }2 p- q9 v2 l- d
get-global-proportion
6 x$ C3 M" P4 I4 D2 Hlet trust-value3 I4 x0 [1 r5 _7 |0 w" O
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)
6 V& M o5 L# ?if(trust-value > trade-trust-value) Q7 z W) o }! t" ]! f! \
[set trust-ok true]
& R* ~. Z5 n' ^9 S% v4 I2 n5 pend4 K0 L0 M: J* }5 y" s
; D) D# i/ Q+ C, b+ A/ cto get-global-proportion
1 ~3 R. e3 G J8 P- F5 x/ Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' W+ X. U2 R1 s7 B" O[set global-proportion 0]
`( A3 Y. d5 Z1 I( Q[let i 0. u8 @8 k# h: s% ]; Q
let sum-money 0
+ N- }, E( K/ M% c" T& xwhile[ i < people]
+ P6 D ^% \( x H$ B- d% c+ l1 U3 i[
- D d/ k- x; a3 c9 ^) K" z: hif( length (item i' r! z8 }- n7 c( I7 Q
[trade-record-all] of customer) > 3 )% t) n9 ?+ O3 {
[
3 u3 f8 ~7 ^& P' dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" s1 P7 ?) [8 L2 r
]
1 l: R, p, e6 U% }0 O& n]3 T6 t" U/ F- L2 ?- |
let j 0+ G# [* c' l- c. b, I6 E
let note 0- X& q) i$ J. t: m+ A: O7 Y7 S
while[ j < people]
* v3 o- V; P% ]3 G, Z$ e[; ~( o& |# m7 v4 u3 l% y
if( length (item i
& `! b0 g. d3 f" Z( z5 Q. S[trade-record-all] of customer) > 3 )1 V8 n$ H' e% m- y7 D
[
& l& B7 D% A9 c/ W9 M7 l" uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ x0 Y8 ~) c' {( k, [$ U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 z c0 H- ?& Z0 \
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: ~. {/ Q! ^( S* k: O5 n T]8 U3 B% e7 r/ s+ p. D
]% r! F3 `5 p4 q" A( T# ]
set global-proportion note3 n. _; U& L2 R* ?' o' E8 l7 H
]
! D# Z& s( M* R/ ?8 Rend( f* H' K- R7 A7 S; h
8 \4 _: }7 Y2 \# a4 [1 ~ S7 p
to do-trade% H. l3 Z: r3 k! P
;;这个过程实际上是给双方作出评价的过程
% V' p2 k% R! \* e& Bset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价9 D( {0 O6 ]$ X% m3 a8 K2 u
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
2 x1 N/ i/ J! r8 [) tset trade-record-current lput(timer) trade-record-current
; W: G1 f2 A3 |- t' k;;评价时间' U! x/ q- k! @' [$ e1 |/ {
ask myself [
. P7 {/ K1 W- Y, x1 Y. m1 \* k8 Nupdate-local-reputation
# ?2 s/ t/ @) _* V8 E0 c& Hset trade-record-current lput([local-reputation] of myself) trade-record-current
9 y- b( J5 p5 D1 v7 R2 U]6 V! U! S9 |$ r9 h7 Z7 t
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" p6 K' S, `6 a5 y' {;;将此次交易的记录加入到trade-record-one中5 ]1 l3 c$ b6 m# ^" |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' C6 X, F$ R- U$ L# M* S* `let note (item 2 trade-record-current )/ s* s; R) J# q! \
set trade-record-current. H' M5 i { i% \( x$ l
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 g7 Z# @0 F6 g: M& C. k. {set trade-record-current
! Z, ^& r- {; d( X, K, j(replace-item 3 trade-record-current note)5 X& N2 t! o: _$ U
- l# d& w: m- |+ J. t& z) Y
/ r* Y: W2 n& v2 r6 D8 `/ a2 kask customer [, v6 {1 e5 y5 H
update-local-reputation$ l5 U' i/ b# s% N; n
set trade-record-current
9 L6 B' y4 i* {8 B) d# E1 M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 B" P) n- v9 P]
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9 v, S$ x. `3 L: b
; _+ p5 `0 Y0 g* c8 ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ l& ] b3 _' Y4 e1 ]
2 f8 C, k& n/ p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); t8 x- S/ A* O) d0 K6 c0 B
;;将此次交易的记录加入到customer的trade-record-all中
! ?5 M* D+ @" m c: M; j* qend$ c7 P" M& }5 C) L0 j5 b+ {
. Q; j) o! n' u5 _5 r7 h& qto update-local-reputation
! X D: G0 l5 K5 @9 bset [trade-record-one-len] of myself length [trade-record-one] of myself I0 J* m+ ~" P) z
% X" ^# [1 k, M" f2 }6 ~$ I2 G2 I; f; E3 l; }$ B" P2 v* w
;;if [trade-record-one-len] of myself > 3 3 t$ o4 h8 E; q7 L# u
update-neighbor-total
8 [/ L6 Y0 Z1 b- C3 u9 W% l! O4 D;;更新邻居节点的数目,在此进行- B2 ]6 Z/ ^+ _3 M7 J. b2 L* d
let i 3
' q+ M/ m7 m( {& U- c3 h4 i* j: _let sum-time 0! `" M/ j W: `3 I( \ g
while[i < [trade-record-one-len] of myself]" o2 q2 x6 ^3 Z1 \0 I8 [3 W! x
[* n$ G1 |: j5 G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- H0 Y2 }9 G/ Z5 m3 p! c7 o0 P
set i, e( s% M) ~1 b# T4 D2 N
( i + 1)
" G$ \) e. i& S1 F. }. _3 A# |]
$ [+ q0 |8 l$ o% p4 clet j 3
. Y9 C; d2 P$ Q+ _( f1 flet sum-money 0
1 ]6 V/ k3 |! L, Cwhile[j < [trade-record-one-len] of myself]7 Y; z- U) ?* _* U' T( o& X
[: i: Z" J/ f' y6 {+ y- _
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)
6 m+ E) n5 x/ H+ n& [4 ?. Jset j8 z/ E; w% B' B- y
( j + 1)7 `) f7 Q+ H6 P* r% a! @7 d
]7 Z5 J, w9 f S4 E3 n- j, ]
let k 3; N( ~! `9 I& b* G/ Q9 n: d' c0 F
let power 0
3 ~- \: u: P2 V5 k$ o. T! Ulet local 0/ l2 m/ H# Z' v1 i1 Q- o# R
while [k <[trade-record-one-len] of myself]1 o- v2 l, \- }
[
M# Q0 F/ F3 d- \: U8 @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)
) d: i' x0 T. I7 L) M9 Rset k (k + 1). |, m" t2 P) }$ F# f# |8 s
]" ^# T/ K7 [+ A: M
set [local-reputation] of myself (local)
$ u/ E4 e I, U) [end8 g. q2 v( w" q, ^$ a e( c. x
( H4 Q+ x1 e& b- t; N% U
to update-neighbor-total/ _7 o2 f, ^$ e- Z! x( c
5 _! J9 R( ?8 j; `& @6 a
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: _" u/ _- i) \" J U
3 e7 Y6 A7 F* W
! `2 o1 |5 E; h# T; j, Oend
1 g+ b/ a4 [, h5 [; f ^, n' v w% d& [/ w& Y# z! c9 p; K, Y8 M
to update-credibility-ijl
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8 @6 U& s# `$ O5 }5 u8 T1 G;;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。
, t. @' m1 O7 zlet l 04 V( s3 l# D5 w, Y
while[ l < people ]$ M* s5 i# E1 Q2 Y+ D
;;对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 k) q( ~, W4 r5 e( I% D2 u
[
+ p" c( Q1 b% C4 E, m( Flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 n, F/ t/ m3 z5 D4 [if (trade-record-one-j-l-len > 3)
" t7 }, ]0 z- r$ V( 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l的trade-record-one
) p8 Y ?0 m8 s8 Q! z7 Mlet i 3
3 W/ O' j6 Y% [( a) Ulet sum-time 0
' q; s8 S* h1 t+ s* @+ j6 R& Ewhile[i < trade-record-one-len]
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set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
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( i + 1)
5 g5 n- G8 `9 M4 B]
. J W2 q( J: U* I3 \+ E# wlet credibility-i-j-l 0
1 r' z' m* q8 ~5 ^. p+ J5 R;;i评价(j对jl的评价)0 g( c- @/ f4 ~5 Q
let j 3
, |& C0 M" M, S) K% alet k 4
0 ~8 K/ Y) ]; G" h$ _3 Rwhile[j < trade-record-one-len]
1 \. r N) l! o[
# c n) T" \6 c" b# b0 \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i第k次给l评价的这一时刻,l相对于j的局部声誉
8 P7 y3 _* F: Jset 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)
% P" z9 r8 S2 C. x2 H$ ~, P, u) Qset j7 L( C3 J& A9 a# v! I6 ]( v
( j + 1)3 k1 q1 z/ ^0 n
]
^7 h8 V' g0 g& f4 {) F1 G' hset [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 ))
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let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ x6 f) j8 O4 ~: K8 I;;及时更新i对l的评价质量的评价$ \6 D+ b6 e( o8 L1 t6 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 \, g& D! P6 @* m0 T K1 Vset l (l + 1)& ^; Z- H$ A0 ~% m' K5 U
]5 }! I' l6 m# ^! n+ f: E J
end
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to update-credibility-list
* _: I2 T# G% K+ ^, Y; Dlet i 0: V1 @- P- Y, Z0 y- B
while[i < people]
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4 O, ? A) r- r" ~; l4 V' Zlet j 04 e/ g* C; `0 m; k7 q
let note 0% O6 ?* Y0 p/ p0 ?2 B
let k 0! L+ U, G: _, H4 ]) I" N$ B
;;计作出过评价的邻居节点的数目
+ f( H( h; e7 Awhile[j < people]
+ E8 E0 R2 E' |$ [/ }# |[) S$ W" c9 K- E& S
if (item j( [credibility] of turtle (i + 1)) != -1)
- @$ k N- f- @3 y2 Z4 d" J' e;;判断是否给本turtle的评价质量做出过评价的节点
( N. j5 }, |) Y% N5 b5 Q1 j) w[set note (note + item j ([credibility]of turtle (i + 1)))2 n- ]' Z; m6 {! u: W5 O) v: M) @
;;*(exp (-(people - 2)))/(people - 2))] [* z i- Z! W
set k (k + 1)
# q- c+ i: h9 y; I' k]
3 `' ?, ~) _# j2 z: N8 v1 u9 @/ Pset j (j + 1)
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( K% f4 c) e/ Z0 \9 I6 Hset note (note *(exp (- (1 / k)))/ k)
/ j# \8 ]5 N3 A5 Q# E+ xset credibility-list (replace-item i credibility-list note)
4 X c* _( y U. Z6 [' |/ c" Gset i (i + 1)
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end
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to update-global-reputation-list% g( c, U7 k# I+ S8 G" y
let j 0
& b# ]8 P, ?) f$ wwhile[j < people]
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7 ?& p+ g4 [! Ulet new 0
) O( C' G2 A+ U1 E3 E# R;;暂存新的一个全局声誉
% z) |; R+ q$ }( g* x- s% V9 Glet i 0
3 w' M3 Y( q8 M. g! }let sum-money 0/ b$ q. J; a" j8 N. Y: F( V. \, J
let credibility-money 0" R7 J8 b/ p: i9 V4 p' G, i+ A
while [i < people]
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set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) M2 U: s# l. T) B. Q: L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) h' e: Q L. C, q
set i (i + 1)
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let k 0( E; D& b1 E6 H, }6 K7 ?; b
let new1 08 v; T# q8 L% F$ e6 [
while [k < people]) ]" T4 c/ l( x0 K1 a2 O8 P( j
[
e! M; ^: M' I0 U. P1 {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)0 D# F6 S6 I u+ H
set k (k + 1)7 [6 U5 i. [5 R2 A- a5 J/ Z3 C5 D& a
]
, Y5 H; O; d) {1 `$ {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) {% z+ h* p8 I5 W. D' y' A
set global-reputation-list (replace-item j global-reputation-list new)* T+ ^' Q7 [5 R/ }8 Y- b# y
set j (j + 1)
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end
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$ ^' t- p7 R' b! N' `) {; F
" d. R& y9 u" uto get-color! S, n$ g/ J) T( o1 Q( e
% S1 H4 m7 _7 Jset color blue; q& \/ c' e2 m6 F8 \) E
end
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, ]- W s# u ]. i4 s" b. r' Jto poll-class
* R7 \1 F) K2 A5 J. b5 H( I! W7 _4 V: |end* r" v1 h; e" F* e: s* [3 t( a
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to setup-plot1
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6 \/ H9 E3 q q4 H% j7 G3 f/ sset-current-plot "Trends-of-Local-reputation". _: m0 f9 A0 M* Z: w; }
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set-plot-x-range 0 xmax% @! F1 r- I9 o1 O) r/ V
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set-plot-y-range 0.0 ymax
2 f% l$ e5 Z! X2 Iend
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7 J# f# L. i/ T+ Y f$ I' qto setup-plot2. Q+ e2 b# Q" k
4 f- E b% H9 U/ n. {
set-current-plot "Trends-of-global-reputation"
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set-plot-x-range 0 xmax
# j: o$ f7 [8 C+ ?9 x N# a* T _4 Z" v( |9 i: U
set-plot-y-range 0.0 ymax/ H6 g, b7 W- Z) ]9 G. M8 u5 {' q& M
end1 k. W: ]" G! q4 a7 v2 \
0 \9 _8 t- Q# a: M- I/ V9 C; bto setup-plot3
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7 d& g' T( o9 ?, n/ cset-current-plot "Trends-of-credibility"" B$ x* F1 q0 j g- R
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set-plot-x-range 0 xmax
3 R( j) p1 k3 E, u! S# J3 T6 C" ]" V/ w2 V* ]* i+ m' [# k1 Q& u
set-plot-y-range 0.0 ymax
y" ^: A" n. V" H' a+ Nend
& C# U5 t2 @7 y: l) ?+ \% {0 [* U, e
) Z; D6 L2 \* y0 @to do-plots
& [9 a( e6 x0 T8 C: Xset-current-plot "Trends-of-Local-reputation"& O, u) H- Z. o! \
set-current-plot-pen "Honest service"
% R4 s, A' J w/ B% p1 Z; vend
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[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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