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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:
7 R% ~) L2 U; t8 lto do-business 5 S, w$ g/ n, m% H* ^$ O: Y, \. A
rt random 360
2 G; V( Y( b2 r, ~. _$ I- x fd 18 p$ L+ P" ~( B* @, W" b( E( c0 b
ifelse(other turtles-here != nobody)[
' y; Y% B$ H' j; v) @$ D   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.) w0 O/ _/ c  t9 L8 d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) n: L6 I  I) O6 l: q' R. F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 `7 e* p0 o* i   set [trade-record-one-len] of self length [trade-record-one] of self
" j. ^  h! |% {   set trade-record-current( list (timer) (random money-upper-limit))
8 Y) }2 O3 i* y/ z
+ T" R" H3 V! {" I: d. q问题的提示如下:
( W. ^+ w5 ]4 _2 f! |# t7 z
4 h+ Z: E5 k- s) gerror while turtle 50 running OF in procedure DO-BUSINESS
3 M% W# q6 V( C* a" s  called by procedure GO
% K2 s0 ~! }+ T# WOF expected input to be a turtle agentset or turtle but got NOBODY instead.& u0 c1 W/ G* ]1 N) H! W# d6 y
(halted running of go)2 |/ |( M+ ~  O' T  [9 I2 o3 {
! R: w1 m! Y9 j( j0 r, h7 v
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! L( E' a" \7 F. 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! i3 d5 N# O7 g7 @8 n
globals[0 A  x' H) x7 T" z
xmax
" T) C* W3 u+ Aymax; x/ M, l" J! \6 d9 S
global-reputation-list( W4 u, v7 q1 j9 M! j. s* B* C

! Y. S/ }- ]4 ]9 E' U;;
每一个turtle的全局声誉都存在此LIST
$ M1 i+ p! n7 D" Z1 @9 s/ X6 ^% c& C3 wcredibility-list" j' g9 ]& |1 L4 u8 L8 v& |+ r& @
;;
每一个turtle的评价可信度4 w- ~% d, ~6 Z6 M7 p. V" c; J
honest-service6 z0 Z" J- F1 I
unhonest-service+ ^) y3 U% |1 b- y# R4 S% Z/ t* G
oscillation1 a! W( I4 T! L/ j9 Z7 N, W: g
rand-dynamic. S  B0 w+ a3 {9 G- i% Z
]1 c/ a! }! N$ h" z5 t4 d
( T( s; A' O( N' b
turtles-own[
( S( y4 y+ X( U. Q/ ytrade-record-all: e( T5 ]) k1 x3 s9 k& L' ^3 S
;;a list of lists,
trade-record-one组成$ w, t$ f' x( d
trade-record-one
  q3 b# Q5 z0 E;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 T1 d2 Z% G8 ^$ ^6 X- U6 L! M% h0 A4 m7 ~) f
;;[
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]]' o4 t" {$ Z4 `! ]8 ~9 J% g
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]5 ?/ M* {" H9 u7 d. 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
2 R/ ~( a" K) e! f) S. u1 t% D: _neighbor-total
9 X6 a! A0 C$ A; Z% g: J4 U;;
记录该turtle的邻居节点的数目
& ]* c* o- O/ a% g* f' s# O# dtrade-time$ ^1 x( ~' y9 ~. c/ R% C
;;
当前发生交易的turtle的交易时间, K7 c8 o, t7 [1 K! D/ K5 a( ?; D
appraise-give
: I# Z& l4 O# _" I  o;;
当前发生交易时给出的评价2 y( J$ B, U5 f$ q+ |1 b6 p
appraise-receive8 p9 a! ^0 K. Q) r1 z: n
;;
当前发生交易时收到的评价
$ D. K2 c8 j4 q+ @7 Q, Cappraise-time! c# o* y7 P9 p4 r
;;
当前发生交易时的评价时间3 |" I, J: C. w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 G. Y& f7 t1 ?( j& b% a8 o. ]trade-times-total& K5 f2 O, h6 r2 ]! v- B( S
;;
与当前turtle的交易总次数# P5 ?9 c8 ^! I1 K* S. y
trade-money-total
& R; s7 x. |" ]/ |" u6 T;;
与当前turtle的交易总金额
9 k# u5 {3 [; ]$ }9 G/ X" w; X+ Slocal-reputation
1 _: R3 A6 `2 Mglobal-reputation; e$ `. U3 w. n4 I
credibility: S1 w, F  s" E) T" a; O% K( [
;;
评价可信度,每次交易后都需要更新3 l% y! f1 w& l; Z+ \3 a) X! ]
credibility-all
1 a, S% w8 g" |$ }& R' ]/ r;;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
* }) m/ ~1 x  @1 p, V  z  n
, S( X) q& A/ X& ~! X: ^( b! ~;;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
; ^5 ?* G# g: @# \0 C: ycredibility-one- C5 ^1 _+ `4 N# B5 k
;;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/ {& {7 V; t( a8 o
global-proportion1 S: R( C& K' k+ s- @, k
customer% }2 e0 h6 K; y2 \+ W
customer-no* f4 a0 ^: ~- N# d
trust-ok/ D( s6 s: V" Q- }: C
trade-record-one-len;;trade-record-one的长度# c- {' p2 J! I: v0 N* a4 R
]4 R8 q; {0 W1 |' f7 n' e$ B, o( O! l
+ N1 P! A6 D0 q9 m* b* \2 _
;;setup procedure
, }, \# B" K: A$ Y2 }9 Y
8 n" m" y3 O; W; B/ i: G. k& Rto setup; u* s" y1 ]; N* A# O% P, j
! P! |8 O5 W5 h" `) {
ca

! i* r7 p, z/ Z& X
/ h$ b8 Q) E: b$ Binitialize-settings
6 j3 l8 i7 \1 t: P5 ~

% H1 t# p; H7 c3 \. |3 \7 {crt people [setup-turtles]
$ v/ p, N  `6 \

; H3 D) N1 z3 ^% f/ N( M& Dreset-timer
* ^) E" ^& y' l- ~+ W1 \1 i
) m, j$ @' D5 W: z2 C% B5 y& H
poll-class

- T2 T0 C' [, c/ ^
  ]4 A% T% I6 k% h6 W' k- zsetup-plots
* Z5 f$ O. e. R9 d& v

" ]7 I# ]5 b# c2 [9 ~3 gdo-plots
* z$ @2 l# b0 x9 [3 H
end  e; W' V, M5 a
$ b# X' m% r4 j
to initialize-settings7 M% _6 {. A0 `6 G0 C9 e

3 @: E" [! q! N9 ?" rset global-reputation-list []

/ G- W% F. d" Z6 c: F" E& d' j" b. v/ a& a: I+ j% r, S
set credibility-list n-values people [0.5]
- H! a4 g# w& }6 x- J% ?. W

* T3 x% ~6 E0 P9 b4 C# ?" vset honest-service 0
+ m: C( l; W6 E

; A) ?, \( O' wset unhonest-service 0
/ }) _" g$ x9 b8 X
0 j. Y: X# Z. \/ _8 n2 W7 V1 w( y: r
set oscillation 0
+ U4 }! B% {( j. [/ ?

5 q; ^9 d. L3 ?3 C: W* i( cset rand-dynamic 0

5 [: l  j2 m" z% gend3 U. _+ d2 M% J4 Y8 X6 ?" J2 o

4 k& f3 n! ^. u! S% `/ e0 r- eto setup-turtles   ^' F( `6 F* M, d6 U6 }- n* y% E6 i: C
set shape "person"
; F! f# p1 t; S& u6 X4 gsetxy random-xcor random-ycor
, [# l; Q3 j9 \) v% C! l) b4 t' Fset trade-record-one []6 y9 H- d+ K4 \) `0 e  B

, A, b4 W5 z2 G& V: T& m2 Uset trade-record-all n-values people [(list (? + 1) 0 0)]
  L) [: l. I& t6 u$ d- W9 F
' M. u# _; ?: w; U
set trade-record-current []
# |1 ]: t8 B* l2 ]set credibility-receive []
6 Y' T0 Q/ d5 D) f' F0 q/ p5 zset local-reputation 0.5
4 z$ i5 l6 N4 ^5 b3 |set neighbor-total 0, {2 ^$ b: v* o0 c3 `
set trade-times-total 08 p, M; `8 j' v" _
set trade-money-total 0; g& D, ^7 q7 b
set customer nobody! K8 h! |) w) ^4 X$ O+ k* A
set credibility-all n-values people [creat-credibility]
. ]( p( {0 o3 X3 }) Q1 Lset credibility n-values people [-1]
9 A5 n! Q# U4 b$ h  I9 Iget-color4 u( R. ?' D! ~8 L
& ~9 q6 b: ?( f2 A3 g; Z
end
( o7 E: h& r+ i6 {+ \: M& H  _. h/ p* u# c+ u* X% R  U: k
to-report creat-credibility
$ X: c! u/ ^* `7 t8 Q( `! O& l$ M- }" ?report n-values people [0.5]; N/ \1 ^. F) h  \) J4 x$ Y8 L
end. h  s0 l) H; H+ O2 h

! S" J" r& ~7 i6 s- R9 ^9 Xto setup-plots
  P/ T3 g) b: H2 D# S! _! w0 X- O. d& ^
set xmax 30

% L/ t3 f0 k. M. ?$ U6 ^* X- n7 L1 u" y+ [7 g
set ymax 1.0

* _# k5 Y# Z/ ^2 @
1 M4 D) F+ I6 h7 S1 i% Sclear-all-plots

/ `) R0 V  u. n3 X& o: a) E, I: h3 e: d; P
setup-plot1
* B+ c0 ?  q. E3 ^
! |8 i9 N& n8 Q% p- I9 Z. k
setup-plot2

* ~2 S! J. t/ W4 [. _% ?2 f+ z! `
) H9 q) C9 t) ?8 x  e2 }% C7 I' A$ Xsetup-plot3
! `& Q( c/ K; `4 v% _0 Y/ Q
end2 p) A- U; b1 X8 y+ Z. K. ]
" |6 Z& h# F$ g3 ^
;;run time procedures! a# ]1 B& E$ k0 U9 ?
9 r: W5 M  U0 y0 c/ _- m" n1 D
to go
  [$ F/ B( b2 v/ b9 m# R# X* E- N; p; \) e& L
ask turtles [do-business]
3 T4 A5 I3 g: U# i4 n
end
' X6 F& u! A/ z0 ?! r
0 M' f# `8 l- x0 oto do-business 1 v1 l! }2 o/ v" c# r' D

  e) {. E. y1 S% j1 h# x2 |: v# D& ^7 c" }
rt random 360

: T/ K' X" _7 j/ n- Q4 P2 R% M
3 \$ l% d5 `# Q8 y; ifd 1

! v3 s' D# q& m4 m1 Y6 [
$ B7 @9 h4 Y; Y0 Y0 y' K! S- j& Mifelse(other turtles-here != nobody)[
1 h  y  s3 l3 a. |
' b0 S1 V; \1 h4 Y0 \: w
set customer one-of other turtles-here
/ f, d, Y' _( K+ \5 R# _4 w' _/ o
8 C& s3 L. S& o' `9 h
;; set [customer] of customer myself
. m8 {/ e, h+ s# D& ?6 D! a& T6 I
4 x0 |- r$ F& ?* A+ U" x
set [trade-record-one] of self item (([who] of customer) - 1)
  u$ v9 i6 D: }+ U! W" U[trade-record-all]of self
- |# u9 x$ l- ]: H0 X3 U;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 B5 K. @' w! h7 K/ z% J. x9 k$ Q

% m6 u; }9 N; ?8 j/ f! W1 Qset [trade-record-one] of customer item (([who] of self) - 1)
7 {/ D/ m& F) J* o6 V( M, z[trade-record-all]of customer
4 w: a+ _% R, k. p& K9 [

( [0 I+ q5 i/ v6 T, oset [trade-record-one-len] of self length [trade-record-one] of self

, S/ A2 ]# }# g. ?0 N$ G# \, W" \; C; z3 l8 e  s
set trade-record-current( list (timer) (random money-upper-limit))
! j: K, O; a5 M" J" Y" ]

7 J. `0 p+ ]6 hask self [do-trust]
, |* g" \' H# i$ P! N& o2 j$ _; A! \;;
先求ij的信任度
$ |  s( e6 Z  A; m0 s
6 s1 {  \4 \2 ]) C2 X5 u: ~if ([trust-ok] of self)
8 j' l( j/ _& s2 ?$ h7 w. i;;
根据ij的信任度来决定是否与j进行交易[
( I- o  l, Q" }2 z6 O8 Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  ]% p8 s% c  ]  Q4 N
( m: s+ a$ o+ T' [; p[
0 z- c+ d' N$ _, K
6 M3 j0 A0 o' Q& t0 X6 H
do-trade
% }3 i, c- o) P+ c

6 ~" z/ A! e! c2 F1 C! F9 z5 Uupdate-credibility-ijl

/ H' g8 ~' m: W! e$ U+ }
8 N, \) W4 O: oupdate-credibility-list
" @4 c: c5 f/ ]+ E- N
+ P+ s, X% ?1 K

+ x+ z1 ]. x, F8 ~update-global-reputation-list
" e: @' N4 e' u/ m

+ n1 b; a, U' V! u3 D( [poll-class

, _6 }: E9 Q% n" h( y% c- N" b
' T9 B$ x2 v+ t5 C- G% F# o# u. `get-color
7 P6 p% s7 P* e" {, O1 v, c+ O

- e+ A  ^* v) g4 u; K- b]]* v" A: x% l; [

- H7 H5 Z2 K- o;;
如果所得的信任度满足条件,则进行交易
1 D* \  Q$ B) F& I* R; q9 O& Z
$ p# U+ Z1 E# J* ?/ P[
1 Z9 i3 f. g' o$ \0 l9 v* c3 v

% p9 m' ?: `( j/ q/ l3 w: L' ort random 360

3 n; f6 K+ V8 p  k6 I4 r
* v6 x" f7 l; L( Q) afd 1
0 c& h0 w; U+ W& y5 A
0 Z2 E" S" ~4 p% }
]
5 n7 W! c2 N  I+ D* e( t
1 g: U3 \) h. C0 J0 ]+ t
end

9 k' N" M% B" b+ l' V) l* d( I5 p" w2 Q3 K- H; l5 [9 O
to do-trust 9 `% P# m5 R+ H' T5 J& j
set trust-ok False
; D0 @0 t2 A3 R, }
) i0 `" H6 H7 ?9 I* ]
" ~4 B1 B# B8 V+ |$ ?
let max-trade-times 0
2 E0 R. R& [% b1 O- D8 i8 B8 K+ zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 c- l9 V5 F8 nlet max-trade-money 04 V; k  C7 l, b; [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' F7 F! Y* V+ ], k8 ], V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- m) }3 A7 u  C5 I
: r) I9 _: Z0 Y7 q2 H7 b

1 E) q, F$ T  Dget-global-proportion1 S" S1 l6 f; D) c+ e8 V
let trust-value
9 A0 Q+ D; p. Tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ M; z3 d$ e9 p0 v- O. p9 [
if(trust-value > trade-trust-value)1 q4 E5 Y' m' ~$ Q, t& A! c/ u! R
[set trust-ok true]
( K2 N0 E; {& T. }  {" Bend; E1 f  T" Z% {; a4 Z

$ y2 q2 q5 |. s/ |& jto get-global-proportion
; F* y* D; ?3 P* Q+ F: l  m) {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 }+ f: ^. R3 I% s9 K
[set global-proportion 0]
$ c0 v6 e; y* p. p[let i 0
) U: B; d% W$ F& A5 {) Z3 Tlet sum-money 0
* R5 X: U$ k; B& [/ Zwhile[ i < people]! K# `# [' g% Y3 ~* b
[
$ ~6 x/ _0 i& x; Gif( length (item i
1 Z* ^. I; h! w; T# D[trade-record-all] of customer) > 3 )
0 \( Q' o8 X0 M6 D7 n! t; |: l" T" t+ `
[
' u7 j& ?" A0 ?$ O" C: @- y! D) uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# H$ s% z/ P" j& |# H6 V]
9 ~5 N; s( q% c3 a% n, Y6 A]
- E0 j0 g5 p8 T! |  g1 o4 {8 \let j 05 [' F& }! [% [" ]; m0 S
let note 09 i4 e6 b: Y; e
while[ j < people]
8 A, Q3 J, p. o" n* x* Y[
( e3 C' p7 `+ @( {if( length (item i7 v" g: L+ \, j. C
[trade-record-all] of customer) > 3 )
* d9 `1 e% O3 o$ p$ G1 |8 n
[
2 Z3 v) |1 t9 u4 w+ Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# w5 B" X7 y& c  o1 S% ]. {[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. M3 Q( W% ~; H" ?7 c; \: S$ J$ y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- [. E! Q" [, ?) X. I
]
, T4 g! f* A$ T6 U5 G" n6 }6 q]
1 s: b# i& H$ v% nset global-proportion note. E/ o" g% @4 X1 F6 g5 Y
]
4 O. T$ a: b- g# c9 |$ Y/ `6 Nend9 v9 _; O; _) C1 u, g

- C, a/ q' |! E4 W& y. n2 W7 D; Vto do-trade
$ b( _- R( T3 Q; x5 B;;
这个过程实际上是给双方作出评价的过程
6 c0 k6 c( @5 X4 ^) _8 `3 W( s  ?6 e+ Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( ?, Z0 k. q3 B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 H+ n: G. e0 D" _! a: r% S) c6 uset trade-record-current lput(timer) trade-record-current: G3 K* G7 X( |; t5 X' l, g
;;
评价时间  d! o9 j4 ?8 E$ q: h/ M
ask myself [0 o7 V! |% C4 i1 o
update-local-reputation4 j/ S' x6 X, n- E. R* h
set trade-record-current lput([local-reputation] of myself) trade-record-current: W9 R2 K; ?+ F  m
]( N' m3 `( T- v3 Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ g$ H2 |6 E4 B' i! a4 U0 J& O2 l;;
将此次交易的记录加入到trade-record-one
% e+ a8 p+ x7 W+ |% }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% j5 \# r5 H- a% x9 qlet note (item 2 trade-record-current )! }+ s4 N) J$ ~9 [! ^+ `2 ]- u
set trade-record-current) I' V/ \9 m; I9 R
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ q9 v0 T: y8 X, J: w, ]' e& c
set trade-record-current8 {0 k" U8 h% y$ c
(replace-item 3 trade-record-current note)
+ d' |1 Q: T' B2 W
( f4 A6 `' m9 Y' Q' J; q7 Y# v

3 w) h, P2 V6 H" ]ask customer [
% h4 w! \& ^6 n" |3 {6 vupdate-local-reputation
4 t7 X2 x8 r6 K# m( Yset trade-record-current
! t: J1 l& x, D- Q. c3 x(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; v/ s9 B3 D% V/ r: K]
: {! R* q  i. w/ F% K" f. ]9 J' e" B1 G$ {

" j  k. M- F% ]# B; ~+ a! Aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 D% l8 P* x9 R3 R, T. F7 K

" L* \4 A. Z* ]  ?& pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: ]- m5 I  G" \% U% b;;
将此次交易的记录加入到customertrade-record-all6 z. s  M$ W% g8 j2 P
end/ d8 X' F1 u& d8 w( b
3 l- B  ]) d* A# K- t# n
to update-local-reputation* ]' `& D2 _3 o: H( A
set [trade-record-one-len] of myself length [trade-record-one] of myself
: |" J% R% q, Z4 p+ g$ |% U2 \3 W6 o% s, @( |$ m. `
" v9 S1 A& d) _
;;if [trade-record-one-len] of myself > 3
0 N% f8 i; F& {3 w4 W
update-neighbor-total
) H8 W+ h/ [, l;;
更新邻居节点的数目,在此进行
' b  E) g7 w- w, x4 ~/ slet i 32 Q  a$ N8 e2 O, j+ n( x0 _- j
let sum-time 0
" x% Z. k0 U' G( m: H* xwhile[i < [trade-record-one-len] of myself]
! \- j, w. U  ^[) y6 W  k4 M3 h4 X# {5 ~7 F
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ d; U- G9 T) M% G% g3 O
set i- @) `5 o* ~: ~. P( G
( i + 1)

# b( r: k$ ?4 j4 }# E]- }) c# h+ i) e( j, s8 {/ x
let j 3- l) j) P( m. N* S* l
let sum-money 0; q- n6 W2 Z: \2 E7 I
while[j < [trade-record-one-len] of myself]
8 R% T+ C  }; Q2 d( y[
0 D* y) _* B9 N+ h% M* uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ u2 u/ Q7 ~' C$ Z7 [1 Zset j* A; ^+ ]5 {6 l$ h
( j + 1)
8 B& d/ g; y! b" j* v) q. x, A
]$ Q2 G" U) S$ F  h4 r
let k 30 z; m5 f+ z& g# T
let power 0
  A; s1 i% q; b# Alet local 0/ a: ^" j! \  X$ A" [4 i# H0 X
while [k <[trade-record-one-len] of myself]) X  W  Y; B7 H3 f* y
[
3 {4 e6 {8 t1 x# C( {: \. L8 \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) 3 ?8 }7 V8 \' e" _2 ]
set k (k + 1)/ P3 o; [: c% R$ b/ X( E- h9 q* N
]& R- W7 |/ N. m4 {: I/ u( W' K' D
set [local-reputation] of myself (local)) W) f* @0 w: F2 M1 l  @9 E6 |
end  o! u) E) L: @8 B' U9 t% b. J/ E

: M$ o0 d$ F. Q! I1 O  Jto update-neighbor-total) n* G7 n. F2 O1 O" C7 r3 k) e% n) n
6 k4 z* B$ W  g6 }7 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ Z0 t! v4 y$ @9 e& \5 `0 u5 O
, Q- N' |+ _! X' k, w' D

" g) W0 f8 y2 Q" Q& e% g$ bend
: E$ {9 a  u3 V2 y+ r5 r: P# K. m9 R! Q" ?( H
to update-credibility-ijl 2 \3 h6 b' j  ?/ H4 N

: L) u! `: A/ V4 g, X7 w$ Z;;
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。
5 I" V5 ^4 W- T8 D/ o$ X6 \let l 04 ]& G/ Y2 N3 _" ?
while[ l < people ]
( r4 ^& o6 i6 ]5 i' y2 @* \) W;;
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% L) P+ J9 X5 |- Z5 k/ E6 W6 e  I
[1 t* D; k! ?( V6 d  U% s
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  u( l$ H& \/ D+ z; L
if (trade-record-one-j-l-len > 3)
8 X/ y: F& S2 m2 _7 h[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 D8 O* M0 X. g& X9 |
let i 3' v. h; o1 u9 {9 y
let sum-time 0
2 A8 m' v) N3 T. m. Zwhile[i < trade-record-one-len]
6 @) T/ v" G9 g[6 t" [3 T7 q7 I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- N: X0 E$ A1 d( }/ a  b$ dset i4 y; U3 I. Q+ F  J, o8 K
( i + 1)

5 Q, ?) [) T, l0 W4 \]
# K0 O2 t. Z1 Q, D8 _, G  mlet credibility-i-j-l 0( o: p  e2 {; v2 h) ^* w; A
;;i
评价(jjl的评价)% p1 q! F  X! f2 t( V( V& g
let j 3
1 C# d' g; P) G+ G5 g1 r! ~/ _3 Alet k 4
" q$ T! R: @  I6 g! X8 ]1 [while[j < trade-record-one-len]
7 U$ m8 T( Y, P! ?[
) E  v1 D# }8 n. V* G! E  u) ^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
, y( Q1 z) p7 x- \; ~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)# {( D6 Q1 T" Y
set j( O, I8 ~. v$ x' p/ K" J/ g
( j + 1)

( a- Z9 z& a8 K* e$ I3 d. l]' v; J# |- h; s: j7 w; F! F: G. n
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 ))& U3 F: ~5 S( D
5 L  J( H) i: i( G+ x% Q0 G
/ _# W. z0 M/ p/ A! [( O: C
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 F2 f  c$ h" Y( U4 O
;;
及时更新il的评价质量的评价
0 N7 w2 p# N) Fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& d& l# ^( V; ?3 k3 O. O0 h
set l (l + 1)
; C6 i" z6 C% m]3 @* X0 g& Z) Y  K( X, B) }
end! \( J: ?* [& ?# ]& n8 N

) t+ H1 i8 ^6 e3 j* [to update-credibility-list6 U: y; h5 r: T
let i 0
/ t0 I+ g4 ^- @: E: p. Jwhile[i < people]0 Y$ t3 J8 t  v8 V
[
* z$ j# ^$ F0 H8 v; }let j 0* S9 x0 g" C( H, F, o3 E
let note 06 ]! y% M! f; b% O
let k 0
! M3 x8 k$ U. _. r9 U: A/ e;;
计作出过评价的邻居节点的数目
3 e4 X# d3 z% `while[j < people]
9 _/ l3 l$ |6 H& [[' @) w0 T0 O1 H  W  |
if (item j( [credibility] of turtle (i + 1)) != -1)* _3 O, l  m4 v* C* t3 `
;;
判断是否给本turtle的评价质量做出过评价的节点
: U5 O- ]: T; j9 _7 I7 d[set note (note + item j ([credibility]of turtle (i + 1)))9 n, C) Q: R7 P2 l" f& G3 R
;;*(exp (-(people - 2)))/(people - 2))]

' f3 L6 J% q0 y* b- t9 k8 Aset k (k + 1)
5 h/ b% }" N3 R) E' L]" L" ?" H) i+ [# t8 J; O* B
set j (j + 1)3 J7 S& {/ @2 ~4 X7 V0 n
]6 o+ l0 X% X( Y# E' c
set note (note *(exp (- (1 / k)))/ k)
8 Z  J# f; Q- Qset credibility-list (replace-item i credibility-list note)/ X0 ~0 v( E( [( p1 B7 y
set i (i + 1)
8 g  A/ F+ T* y5 g6 `# }7 C. U]
5 H: [4 Q" {% @% J& Vend9 O9 r! Y. W: D, i* }' L

) }# K! w# f4 Uto update-global-reputation-list0 z" i$ B. j3 h+ h! ^' c
let j 0: G% @+ W# ?& {7 R- l# k
while[j < people]
7 G4 p" Y5 ~+ Z" P3 P[  r9 T# m  Q2 z+ ]3 @
let new 0
' G: F" D. |) z% [: d;;
暂存新的一个全局声誉
; Q! D7 I8 Y: P5 plet i 07 J, p( _2 T# @9 @: W+ q
let sum-money 0
" J# Q/ n+ k% `/ d8 F) alet credibility-money 0
+ ?5 ^1 h) I, c, ^3 B9 mwhile [i < people]- j% z2 M0 g6 P; m$ V) |' b/ }
[) X* ^" y. T* ]1 e) x8 \" J5 F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 U3 d; j6 ^# ^! [- B$ Y& Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! z$ p( l2 ?7 b0 `) W$ F* r% wset i (i + 1)
+ ^$ P5 {* l7 ]& `]
6 \* }6 i( `7 ^let k 0: j- I/ j% A2 {7 [
let new1 0
9 ?: }. z- c3 A9 _while [k < people]% D0 [# H+ L7 J0 i4 k  K
[  ^/ p! s6 \5 c4 g/ ~4 q
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)
& u9 w( w- L& Q. ?- K% k8 _$ Bset k (k + 1)
7 m/ b6 q6 V. Q! a7 O]
+ O1 S, z) Z2 Z8 I* W1 e6 }set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) h' m4 N- `& D4 R) G- \0 Qset global-reputation-list (replace-item j global-reputation-list new)2 l, A5 n. [" s% {, o0 @- P
set j (j + 1)4 R2 T" r( i) ~2 m
]5 l0 E! C1 f" z
end
; G$ o7 j, P# G7 t
2 {' R* G. J6 M/ I' i3 x+ ]6 m  H9 {

( n% `6 O8 H3 s3 n5 v3 _/ A" }8 v/ Ito get-color* H# h$ w& z' X) o- X* a+ q1 p
# G8 g+ w$ x5 h
set color blue
$ f4 Q! {0 |/ {" U: h+ t; U# F: v
end, m7 }3 B( X. L  E+ I
: [: x" ~* p) u: Q
to poll-class
% Q1 B! B$ v" A4 N8 Aend7 h% c/ }" _4 ]' V3 K
2 Z( S1 ^0 Y$ ^/ P1 A9 g# ]3 m# E
to setup-plot11 y8 [3 _+ k- h. D/ T; r+ B' R5 n# m
+ B7 ?+ t. |# Z/ \
set-current-plot "Trends-of-Local-reputation"
4 x/ z% E- Y- |$ G) F# ?: F
0 r& E- G: z+ Z( K  D
set-plot-x-range 0 xmax
3 r0 ]  i! W; ^- G: R4 ~4 w

9 o- A; c# c6 B  \" uset-plot-y-range 0.0 ymax

2 r1 a9 b6 c+ Cend4 F- y8 N) H$ n* k( F5 A
, b# F! O( Y4 }
to setup-plot2
( o; H6 n4 \5 V) @& _: C
/ h! q1 j* K5 B  C1 m: [set-current-plot "Trends-of-global-reputation"

' N- w! V& i! D( ~) U& U: m# J
  G6 }; n, \  w' @$ E! i+ j/ y' Pset-plot-x-range 0 xmax

4 u3 A, f+ {- ?
: X0 {" E' F  B* ]2 m+ Bset-plot-y-range 0.0 ymax

' d- O2 q) O& V" eend0 x: n' n9 o4 q, R" J9 N0 h
5 B  [+ r( ~; c# q% j0 Z+ u
to setup-plot33 P9 m+ s  P. I9 n" N
( {% p) ~0 {* Y2 Y5 h
set-current-plot "Trends-of-credibility"
. F8 `; M) M2 ~" `4 {3 a" S& L
, r* T( J' i4 u8 U1 u
set-plot-x-range 0 xmax
8 H2 B% E% X! q8 G, k9 Q$ ]7 I
- x1 ?- u5 }: {' s
set-plot-y-range 0.0 ymax
+ Y. f8 p. D. D6 N3 G) s/ T
end" \! M4 b% @! }4 s

7 ~* ~" M' z. @& ito do-plots6 J' Q6 c9 d7 l
set-current-plot "Trends-of-Local-reputation"
  u6 n: ^/ Y) l" Y0 Yset-current-plot-pen "Honest service"6 P4 s- X1 V2 X3 T
end5 C3 w: A# R! e
! R7 s, q9 d3 e+ z/ {7 Y
[ 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 @1 L2 g+ Q& \, m, {- F1 j/ T; l9 M5 I2 E- @: x8 D
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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