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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:# l4 y2 L( g6 ~4 v% _3 t1 }( O: X
to do-business
! b0 V; Y' V/ v rt random 360, y7 N. C2 q7 J
fd 1
  A0 H6 l! I0 F! U+ Q8 ^! a" v ifelse(other turtles-here != nobody)[
# ~0 C2 g3 O9 ~% x   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.0 o7 a. r3 p% I% |4 `$ b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 n1 H3 z9 W4 Y9 W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 I+ k: ?0 K, I9 ]2 N
   set [trade-record-one-len] of self length [trade-record-one] of self& `, V4 G& H1 Q
   set trade-record-current( list (timer) (random money-upper-limit))
: ?0 ^* j7 S. @1 W1 f9 g
0 O1 i; x; x1 P3 k+ S1 Q问题的提示如下:* e( Q: c, M0 q) R$ \- h

2 E4 ^6 ~8 X: o5 D9 ferror while turtle 50 running OF in procedure DO-BUSINESS
; A9 h) L4 X4 u9 u, l  called by procedure GO7 u3 H5 @/ ~: Y- k2 K4 ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  e( m8 M! ?, i7 q
(halted running of go)0 g+ d4 z4 x) `: G; H  w

8 F# l" k( n+ ?: Z: U! R6 |3 \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~~) U- V1 p5 x9 F* Q' u; `' R
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% E* ]( l9 {: {& U% j0 N2 D5 [
globals[. Z' q9 Z: e$ U& r
xmax2 m6 {8 w4 z/ m8 o
ymax2 K: j- B+ h  E7 ]! A
global-reputation-list3 p8 |$ O: C/ x

1 t( A# K$ k& l8 Q, ?$ h5 r0 s;;
每一个turtle的全局声誉都存在此LIST
8 G- ~9 `9 E5 N6 i) k7 ?; [" @credibility-list+ q, L2 x" Z0 C8 m* \; T
;;
每一个turtle的评价可信度4 U* U# }' L( Z4 m# G
honest-service
4 V! H$ w. ~  e2 ounhonest-service, f7 _( t- p0 G0 r1 I  t
oscillation/ q+ O9 s2 q4 I' m+ R7 G& a# Q
rand-dynamic
' ~/ K2 r1 J5 a0 h4 N8 a]& _! W2 X& G; ~( @  r; R* i
7 ~) E& b0 w& {9 A! P0 M+ J7 H7 p* O
turtles-own[
) a& Y& S! e; L6 ztrade-record-all% }0 M* R# v3 V4 t! k/ T4 G
;;a list of lists,
trade-record-one组成
- X8 i$ l' S- z7 r# P* ^trade-record-one3 a5 A6 s6 P: r. G" X) s
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 q" i1 r* w' h
" Q" [1 m4 O" L;;[
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]]+ x/ c/ K9 ~# ]" ^3 o2 e& k
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]9 M% E) m: L. C) H
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  E& y( r/ ^9 c; \neighbor-total
( F: H% Q& c. W3 V' O2 Q4 C6 E;;
记录该turtle的邻居节点的数目) j6 p  n% N+ N3 e  x: F3 l
trade-time: e+ j7 S& B  [! _
;;
当前发生交易的turtle的交易时间) [# j; k# N0 M5 P
appraise-give+ J/ ^+ j) b3 k9 ~2 A
;;
当前发生交易时给出的评价# T$ @7 s5 o( e8 L4 s9 `
appraise-receive
# h& `8 _5 T! i- ~  C' ~3 y;;
当前发生交易时收到的评价
% Q( |6 R) K6 o/ b. |7 t( Vappraise-time
2 u+ r. o$ R6 G2 n;;
当前发生交易时的评价时间
3 a! J3 B" f- b- `: Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) X5 n0 V5 j7 ?4 I% _- ?& gtrade-times-total
. n# d! B9 Z: |+ Q# b' @( r( v;;
与当前turtle的交易总次数8 D- r( K+ H$ ^. R. G7 R. p1 J
trade-money-total
2 [3 K  W$ ?( _9 J- M8 m3 U8 y: o0 M;;
与当前turtle的交易总金额
2 c% _: m. A7 S7 T: p- glocal-reputation
& p* _4 ?8 ~2 D3 T7 g: X7 J; Xglobal-reputation
* f- c- R# O/ m1 _credibility
1 e! i1 i$ }" H! n* o! @;;
评价可信度,每次交易后都需要更新6 Q# P2 A$ z) }, R( y6 e) Y% }
credibility-all, i& k) F* t* ~; G, r& A- 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
3 K5 i; V8 F# g/ Y8 ~  p# x4 ^2 v9 a+ 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
1 h# N; X6 X0 H' Q0 |7 ]credibility-one* F7 q& |, x9 P$ z1 d7 O% _" d
;;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' p( J* w# q$ z( _; sglobal-proportion
2 g2 R0 C* P5 q1 ]7 Lcustomer
6 i. t3 M5 Q) K! [% E0 Mcustomer-no; Y# A1 a5 C3 H! U; H
trust-ok
  f. }2 F8 R! j3 W6 g+ N. |trade-record-one-len;;trade-record-one的长度# w' ~( ~0 K# ?! {( Z
]
6 A- O0 G$ A$ W. w
) D5 ~/ t- ]* v4 Y) a;;setup procedure
3 S, `5 ?" f+ N! K# q+ D! E5 G
8 z* A( e7 b$ V0 @* q! Rto setup
% F( U$ T2 K( e  ?  N; C0 D* u5 B7 d
ca
5 j8 f0 a3 ?* C
% u9 u) L+ ^$ ^6 W" r
initialize-settings

- z* m( m  L( U7 D/ J; v5 |/ o6 m1 n/ z- B% J( x7 m
crt people [setup-turtles]

/ H+ C- k4 I9 J2 m" h/ l) h* t5 z, _  }/ Y3 y' ]0 y
reset-timer

/ s+ A" E$ J  n7 S1 v. g
9 q! b8 A; X  [: o7 ~4 Npoll-class

- D! ^2 B2 l9 T5 a! f( H
9 K+ K. O8 ?% Vsetup-plots
- Y2 K* A* Y0 q+ E8 m! P# W0 G

5 G+ z$ [9 M  w! K) i/ Bdo-plots

' X8 \4 |( ?( d8 Q3 k# D# gend
7 ^0 f/ H" N9 q& p1 M' K2 M4 d1 W& U5 j0 H0 X$ X' v3 w
to initialize-settings% J; `1 x/ I5 d/ I& ^+ R
4 y& B6 ?4 X2 k; N% r
set global-reputation-list []
4 a5 d8 k9 u& F2 r

5 o  P# Q6 q# B7 X* M* n2 Yset credibility-list n-values people [0.5]

5 `5 k$ u* c+ y
  N% X% p( L! W' bset honest-service 0
9 r7 N- D9 Z3 U+ N' ]- k
5 _0 n; g0 \/ N" a5 t. @9 J; h
set unhonest-service 0
8 ~9 M1 v6 J" Y' C
9 P3 z1 A- Y+ V# V0 |. v
set oscillation 0
& u! T1 C7 M' l. e; L
' x4 f* K/ P* V; m3 T) u
set rand-dynamic 0
& M5 j6 I$ ], k
end4 j) |& c4 N# m, N( j

9 K& f6 i7 {1 Q' v( fto setup-turtles 2 R% T' V( S2 P
set shape "person"
0 ]. |3 A+ Y! y4 }, rsetxy random-xcor random-ycor# @5 p, v: z! a& I% `
set trade-record-one []3 K6 ~: X, i( n6 O4 a; K

5 W4 s+ W  P7 X3 ]0 x. Mset trade-record-all n-values people [(list (? + 1) 0 0)]
; S$ G$ ]# D- i' _3 R

; Z! a: W4 v8 A2 @6 o8 p  [! V  a4 Cset trade-record-current []
3 a& \- B& G3 h, X; Gset credibility-receive []
" H+ Y2 G+ J6 A! zset local-reputation 0.5
7 Z7 t- E  h2 {. E* h- ^& h' m1 jset neighbor-total 05 ~8 L! F$ O4 ?  K5 K0 W" `
set trade-times-total 0" q; k5 g4 C; N/ k' P+ j9 P
set trade-money-total 01 r3 u. }6 y0 x9 S2 f
set customer nobody. ?0 S" R1 ~  h  C7 G& r# G: ]( ~
set credibility-all n-values people [creat-credibility]: `5 w' A1 j4 e; `1 K
set credibility n-values people [-1]2 h- Z* P' }; A' y0 |$ ]. {* c
get-color
4 ]' T9 t- X; m  y  \! f4 m

) ?! s$ l/ Y3 x& fend5 \& r+ K' o' c

/ U) I* Q- C9 Y3 F1 h1 [( e0 F1 P0 [5 Hto-report creat-credibility1 K% ]4 J7 u9 M/ G* o
report n-values people [0.5]: D. L( q( t+ ?3 {
end
# v5 t6 s1 m% r
, J* L9 g/ P) j$ Q3 Eto setup-plots
% D1 S9 G; K: M8 b; ]; U& G4 ~: z" C3 g. V! @5 M
set xmax 30
9 \6 M2 m; L! W) D' r6 Y, `
1 @" e: D/ x" `; Q2 w
set ymax 1.0
0 |% M0 K8 p" Q
! h& z3 v. K8 T/ ^4 ?5 w& G5 k
clear-all-plots
; x1 h8 Y7 @  a

# c) _  A# f& s# `  g8 E; dsetup-plot1

9 k: n  q9 W: ^0 z( a  i' O, e  \5 R8 o% u( H* O% q8 Z7 }( n0 |- ?
setup-plot2
- X3 ]: u4 n0 e
: h$ Y2 {" N' M; ]$ L- l
setup-plot3

% L8 ]- \8 c2 c* ^) B6 p8 Fend
$ l" i# q! ^, a/ j/ [) \1 T% {  J3 T4 u( D  |, M! k
;;run time procedures
* `: v2 c" I: Z! L* j1 b. h# C% J1 Y6 U" Y) n: ]9 Y
to go
" D5 c/ ^7 }1 K: r2 J1 y% I- X# p# Q7 q( m5 `- d
ask turtles [do-business]

& L1 \, H# l1 Z1 wend' Z7 L( N3 P6 Q" `; b. Y/ E- B
7 [7 D. C' Y& p- t! V$ t
to do-business
! n: ?" I0 y4 m

8 `0 ^' {8 L: N
' [2 W# U, P+ [8 }  B' frt random 360
9 m. v5 Y4 T9 Z6 q7 r3 T
5 o% V+ Z& a$ D) L3 z7 B4 A
fd 1
, W: W9 k* e( X7 Q" t

1 S4 I& I, M. y& j% q' mifelse(other turtles-here != nobody)[

, E# ]! t" i2 p5 g) W
2 F1 Z5 e/ s! |/ T/ uset customer one-of other turtles-here
& C- T" L8 E1 \/ i" p1 z* ?

6 r3 z0 ?) p* p0 i6 W;; set [customer] of customer myself

+ \- R4 d4 c. i! x6 s/ S0 ?3 j5 w3 E, P7 p# G; X1 F. y
set [trade-record-one] of self item (([who] of customer) - 1)
4 L/ U# J/ V5 j' Q. i9 L4 s2 Y[trade-record-all]of self) j& {0 }) D1 f( |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& v  Q* m+ R/ Q2 `6 s# \: I; b  R# l; Y, r* \8 A% v
set [trade-record-one] of customer item (([who] of self) - 1)
- S- m7 B2 P; Q" e# w" }2 p% Q[trade-record-all]of customer
2 r: k5 y% _# y( _2 W
6 q  K8 _$ t/ P! b2 q7 j5 Q% p/ Z
set [trade-record-one-len] of self length [trade-record-one] of self
# z9 {7 {' d2 o4 Y$ Q" q* K+ R

$ F# @# z: q2 _. ]9 z# qset trade-record-current( list (timer) (random money-upper-limit))
1 A7 J' ~$ r  J/ P! v' S

4 T5 \3 Z5 i+ h- D* L3 t  Sask self [do-trust]
* F, M" R6 E3 O' R( ?, D' T;;
先求ij的信任度
6 @9 A6 U0 b- z+ v! I+ x* \1 {( ~  u9 F! P) ?( f$ c
if ([trust-ok] of self)
0 R3 F; a2 ]9 R0 x% M;;
根据ij的信任度来决定是否与j进行交易[
, M- v/ c) S1 qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 Q# y9 p$ p" C* ]+ E- H
2 t, I* U3 J4 y
[

* \' S* A  c3 V5 T7 ~1 \" e5 x
1 x0 f, q' g2 B, q" [9 S6 J+ vdo-trade

6 h( E6 k9 i  T6 v* n! @& a1 {8 p
6 F7 i' U. p9 s* c( X( fupdate-credibility-ijl
9 _# N! p+ M+ K, S, H
1 ]- h, I  l; V2 d& s2 S8 E* Z
update-credibility-list
  M6 i4 i; d# L( @9 N

' k' Z# F* Z+ m0 ^0 f3 `( j9 c1 t' M! f% _0 \! V! ~" }* k
update-global-reputation-list
8 P2 A' J, ]" j0 _0 \7 ]! P- ~

3 q0 G$ [) e$ U4 V& fpoll-class

; H- o  r8 M# l+ a: E& Z; R) q( A2 F
get-color

8 p" ~: e' ^- ?) H$ w  X1 }5 O& {; N* f; |- y/ l$ _2 i& [/ \
]]
0 E$ s% W4 N' ?/ j
/ ?% B8 m: C4 X. Z  ~;;
如果所得的信任度满足条件,则进行交易" x5 ?# v! n3 Y. }9 o
. M7 H4 o7 w! q
[

' P8 d6 l. |) ^; _* Y
4 N0 y+ ^0 n: wrt random 360
* H4 u" p. z9 V$ Q; N7 E
% R, a  A! z0 \5 h; P6 d
fd 1

8 o7 M3 [& o6 ^6 }! y4 z
( \$ Q* n, r& U( C: ^! K: w]
3 F/ H" \8 }  a4 ~* S- D

% D0 W  V' R1 |6 o# w1 A- Oend
& m6 f" k$ M. [* I

& R& ~- Y3 j4 fto do-trust ' m1 _% Q3 |% I# X+ Y: @& p
set trust-ok False
# A" p6 h+ i% f/ e- r1 c
4 s+ m. i1 g% X' H9 A9 g

4 U1 ?1 \1 ^. G; o6 _6 Xlet max-trade-times 0
. J9 _) x6 @1 i7 A6 |1 x* Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 Z, P6 O% T% T. b( G+ P
let max-trade-money 0
; w* V5 V  |4 ?, f3 {7 {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 p3 V' @" `& m3 ?& o( zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, |1 L7 h( i- j) H
. r5 e( R. P) N! q5 P' U

! S% e, o% m+ t6 F8 A* ?6 Wget-global-proportion. r$ c$ e; A8 a; z! O8 [9 V, I
let trust-value
. m- }0 m- Q( W! u; o6 `7 ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
4 ?; J( g, M! V
if(trust-value > trade-trust-value)
8 B$ Y& }% t/ d( [9 l; E[set trust-ok true]
) M& e0 J$ i, I3 Q3 t# }# @end
$ }0 N1 {" o, A4 d9 g# l) n/ R
7 P- v% v9 [* Oto get-global-proportion
# f5 d8 x/ {, B* v% Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) Q! S" L' b2 ]0 _5 ^  X4 a[set global-proportion 0]/ o" X5 D* O1 _: B
[let i 03 h2 u  i& ~4 j2 w6 ^% [( D
let sum-money 0; X. s' e/ f6 O' D( ^; w# H
while[ i < people]
3 M, [0 d4 s/ a. b& A4 X& \[
# G$ b0 u6 C  A- o( }& H: tif( length (item i
/ u9 _3 _+ d! A% R[trade-record-all] of customer) > 3 )

! w4 L( M% }. U( \  o9 C! t, H$ J[) h3 V& O- |0 y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 \' C' {$ ]' F9 v; E  P
]
2 W$ y- Z+ n8 Z3 y5 w( I]2 D5 Z* g* m  _# c! u3 Y/ {9 {, a+ z
let j 05 z9 N+ n, \* J1 y# d( r, e
let note 0& J* h6 _; O/ ]# E0 w! b
while[ j < people]
, U  i  {! q7 O  _: h; S3 L8 o[* Z* Q/ X9 h' _$ \
if( length (item i
% ?" {% r& g& U  J+ J2 Y[trade-record-all] of customer) > 3 )
" L* ^: H5 E4 e: k% L
[7 ]9 y% K. Y, R. {1 F6 y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% [$ g, \3 m0 f4 x$ E5 S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; X) M) k: L3 J) _  Z) U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# v7 B8 T/ b! @7 v  M8 G# t& P8 I]" }" O- P1 [: m5 x3 Q) U  C5 q; F9 a
]* j4 B+ b. O* t
set global-proportion note
3 d, v+ n) V8 N, b- `# S9 }9 }]
' w2 O" G8 I( l1 M5 hend
; t6 o- B" c. S# t/ P1 u% X: {
+ C4 Q# r6 O. ]to do-trade
4 Y1 D! X; {# o& o$ ?; p9 X;;
这个过程实际上是给双方作出评价的过程
. c& L$ x) o# W: g' X, tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# ^/ [; w6 b$ O& m+ x( Y, d. Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& Q/ z' L1 P1 D' i- Tset trade-record-current lput(timer) trade-record-current/ d% g1 i' [9 l4 `" w
;;
评价时间
) A* x- I2 Z( N9 ~# Q5 oask myself [  l2 g6 c* g9 q2 N8 k' ]" u
update-local-reputation: Y8 Y; d$ Y+ s5 K* O
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 U; P& H" C" Z: [+ }. O]
/ V9 G( ?! W! `" G% G( ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 k  V' H- a& y- Q, t: {
;;
将此次交易的记录加入到trade-record-one
  x# b8 C; a# q3 F5 K* Tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 c7 r& o+ e" L$ H! ^let note (item 2 trade-record-current )6 V% G# D  l1 h1 Y4 e
set trade-record-current
: ~, J5 `. ]  F) E(replace-item 2 trade-record-current (item 3 trade-record-current))

9 n  r+ J3 O5 w+ `9 m1 ?set trade-record-current
" ]+ H) N1 T9 E5 f(replace-item 3 trade-record-current note)! J4 o$ R9 t3 N  r( j1 `

; i0 ~; r5 ^* X+ @1 N  [2 T

6 |7 \5 w* s/ q+ }5 Y6 k8 pask customer [
4 Z/ S4 y" w5 B3 ^$ ]8 \9 |- wupdate-local-reputation6 ?3 z" `$ S( J0 U. \3 C
set trade-record-current) ?7 _( m+ v& j1 x5 @3 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: T( Y" q" {: U5 V7 c
]7 D  \% b" C/ [2 }( r+ T

) W& |& E4 A- Z$ C0 J  g1 y2 R1 x

0 E) ?* q. A2 g- r6 L+ E, Z; f' mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. N+ w) b& Z/ W/ f
- ^* {. D  v$ W( H( p3 e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) T- L; S6 G3 @$ i, W  A$ R0 v
;;
将此次交易的记录加入到customertrade-record-all& @! b. d, x+ g* |
end# ]( ?- o2 `. f9 o: m

5 S1 W1 P$ E4 Z/ x4 yto update-local-reputation) A4 E9 O6 [3 i6 A  C
set [trade-record-one-len] of myself length [trade-record-one] of myself
: S  A. y! m/ O
; }" Q% J0 \- O6 u1 c$ y9 A' \: p& m1 g. V! ?7 w; r" Y# v
;;if [trade-record-one-len] of myself > 3
1 E9 e/ [: G9 T  J( ^+ i$ k
update-neighbor-total9 S8 H8 p& ]6 B1 `- D/ g& z' ?4 M2 D$ r
;;
更新邻居节点的数目,在此进行3 B9 Y$ W3 }/ O5 X8 O
let i 3( D) M9 {$ H" A, q0 P
let sum-time 0
8 o: X" B' I/ J/ E6 g  qwhile[i < [trade-record-one-len] of myself]1 @: _; ~! a  g! U7 \( b8 L6 X+ [. p
[: M: {9 g' E4 C: ]7 U7 Z+ ~! q+ N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). z  Y) z; `" S9 T/ Y0 q8 @0 x& M
set i
- R5 p9 i0 F: R( i + 1)

) `& \' P9 B: H; x( a]
' h0 G' x' k$ ^, _# _6 p6 k4 m5 w5 Vlet j 3# X; ~7 h- ?, J+ ^- J
let sum-money 0& X& @! D9 b6 Q) I: E
while[j < [trade-record-one-len] of myself]6 q  K6 l3 K- d# T6 M( x
[5 C7 H) j3 W3 S1 t" 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)
9 k/ Q! h- d/ Lset j5 F  F2 C6 h! _# Y$ T
( j + 1)

1 m: D4 a8 P# }% ]. ~" @- T]& d: `, t# ?- V5 X
let k 31 K$ S5 `2 I) N6 L0 I
let power 0+ ~7 H, j# a- _- [! G* n
let local 0- ~$ ]% @% s+ T5 l3 X' _) e! F3 x
while [k <[trade-record-one-len] of myself]
' ?: d' e. R" Z! d0 Q[- t; D8 G) }+ t$ a8 I& J
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)
6 {% p$ v0 z% e7 E) _4 k2 Qset k (k + 1)
3 k1 h( v7 h4 Q" P( ^]
0 U4 t: c1 j6 Aset [local-reputation] of myself (local)
' ?7 {" C. G# ~end! D8 h3 a& r, Q
/ @$ c  ]" N( t9 z
to update-neighbor-total
  c* s: }" t: q7 o7 o" C3 u, d6 Q" @& x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, E; A: O* R8 h, L% s4 w
  w: S, h: |/ l- l% c( S
5 Y1 V8 l4 t7 ~0 H! r/ ]; }
end
2 @0 O) J0 \- E; K9 `& S6 i: B0 v8 M( v
to update-credibility-ijl
* ^% w( z9 S, c1 ^% K* K$ P4 }  N: i7 a4 G! n6 D1 O) ?
;;
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。
( B/ Z3 ]1 b  k( u9 h+ N  Mlet l 0
; o4 U) G8 p* m) X! @% k4 Uwhile[ l < people ]2 y( V, B+ j& H3 [6 N( i
;;
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
$ f8 i- @4 S; [+ h[
* v( t2 B. |1 E3 H+ E6 Tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ d9 M# {, K# {if (trade-record-one-j-l-len > 3)) i$ T( ~! v% j5 `5 V
[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
$ [8 S+ l/ m. G+ v* W0 F0 s; glet i 3
  c5 i) _5 j  @9 B; }let sum-time 0/ N4 Z' O. `8 Z2 ]% F
while[i < trade-record-one-len]
/ ]/ S4 x/ m8 P# J[1 l0 y1 Z% _2 X) W7 E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, W8 e/ n: L  m  o# w1 pset i. W5 H: x! z( I& x
( i + 1)
) [5 I7 m' K# X8 s
]
# D" @. ^/ `* R; U5 k& [4 ^let credibility-i-j-l 0' O: o; H  l/ @4 U8 }( W0 _! j
;;i
评价(jjl的评价). U) J: e9 J% f; h8 {0 @% i5 Q: V. E" \
let j 32 {- Z- c  ?/ G2 p3 L: z
let k 4
9 W+ z/ `( R; v: O& X" Y- bwhile[j < trade-record-one-len]
% |* b) L2 E8 r: f+ h. g[
! M* W9 U) e- G# o5 u9 M2 k- E6 ]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
* W+ ^+ e- J2 ^7 M  b2 pset 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)
2 d  r; h. _" k9 F; _+ M+ K9 uset j
' X* b! T$ P6 t, r' Q4 F0 u0 |& e( j + 1)

2 Q8 P, \% p' U, _. h]: W+ }4 c  k& ~, y
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 ))9 H0 Y( b7 a' P5 w) x* D" l
! B! ^1 I2 J/ |  }9 J+ `- ?4 _

9 A4 C9 j6 _4 @6 K8 n) Plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ K" ^5 A7 `6 B
;;
及时更新il的评价质量的评价  l2 d2 m7 _- V+ c. ^) a
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& \. t- I0 K7 G
set l (l + 1)) K) V; @9 g! @9 p5 w# S: i
]
% X! x/ @: i, B5 v9 }9 m8 s4 vend
! ^/ {, a" K4 n1 O# Y* e. y$ c% R
( ?# H7 F. R. }% [& V) G3 Y  p2 \to update-credibility-list5 t! @8 v$ j, j! `
let i 0
& ^. Q' V! Z) W# j; s; Ewhile[i < people]
* N6 O$ A$ Y" m" q/ f, ^) V[
: b5 ?% E2 B' n1 [- y; Qlet j 0
+ j7 c2 i5 k, q8 o* {, ]6 Vlet note 0
" M2 T$ @1 _% Y% jlet k 0
+ E% H# L' F8 N# g/ V% j3 C6 _;;
计作出过评价的邻居节点的数目. L& H! s, a) Q: s- m
while[j < people]
8 a- D# _% R2 ?3 E, O; v[
$ |0 y* V6 w' T! _if (item j( [credibility] of turtle (i + 1)) != -1)
$ E* C8 j$ E, P  M. H;;
判断是否给本turtle的评价质量做出过评价的节点
0 a) Z- k. H" i; c+ ?+ P% Y3 i[set note (note + item j ([credibility]of turtle (i + 1)))) I; a: K/ a4 N
;;*(exp (-(people - 2)))/(people - 2))]
3 N, e" ]1 |: a( v
set k (k + 1)
$ J2 c3 l9 T  O8 ?- x]0 D$ z# J" d' Z9 _0 w7 t$ D
set j (j + 1)
! H: ]8 {+ o( K, \2 O. U, X8 [], u8 n7 _& c4 W$ O* L+ ~( J
set note (note *(exp (- (1 / k)))/ k)! i6 i9 }7 C, k
set credibility-list (replace-item i credibility-list note)) Q4 ~/ W0 A$ f- L% M
set i (i + 1)
' L. M# t9 c6 m; ~2 T: h, L' m]
* D8 }1 p2 M0 w4 j. t8 Uend$ L2 H* F1 r. n- j' y5 A
) O) o! q- t4 R3 }
to update-global-reputation-list
+ S1 [, g1 Q, H; j. a8 m# T% G$ L+ xlet j 0" T' ^! c# ]3 M# P: H  e4 v
while[j < people]) `% c7 w5 R3 z5 C
[+ C8 ?5 q& p) Y. q$ I0 @) \6 c
let new 0
$ T0 }" C& @% Z" H# Z4 l- _;;
暂存新的一个全局声誉
8 w7 L& Y* |3 f1 Qlet i 0, O& `2 a7 j8 z8 v# r# ?7 `! G9 j: k
let sum-money 0
7 J( N2 L. b7 p" u% {5 h6 klet credibility-money 0
! C6 W+ w  C& C' zwhile [i < people]
$ y) s% `$ U. v) X[
& {/ D- G2 r5 |5 K; g! G% l3 Tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ S# R6 u0 `1 L8 B( _8 d5 b# k  T- `) j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): q: i! C8 b1 y$ n6 g2 j# U+ t+ J
set i (i + 1)
( d/ K8 [. E; h* `+ d/ p]0 ^5 C( ?0 `3 m+ Z/ ]; T
let k 05 ?. `' ]% {/ M2 P0 O8 B( o4 {
let new1 0  x/ q5 _4 ]. k9 r* y0 _0 C
while [k < people]
. [, A- s# @# r0 }. w" V. X8 e[
6 y4 t/ n* _9 \: nset 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 E5 n: r# I! S
set k (k + 1)3 D9 B2 l! s+ Y& V/ I
]
& u7 {3 t, c7 f# s: |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - u" B! g8 e0 @9 Z+ o
set global-reputation-list (replace-item j global-reputation-list new)" u9 c! `! T5 o' c8 @* V
set j (j + 1)  X& a4 |! C- F1 T. K3 P
]
( {1 |$ S& {# O3 `3 p$ Bend* v/ Y& Z! a5 S  t( }( ]
! G1 I5 g9 r! k6 t& Y

5 O7 v4 P* @& n, Z. p) c; r8 T6 F" g6 C; e
to get-color
: V. ~, h2 ~* Q' F
3 B4 p0 {$ F, j4 c; F6 x8 Pset color blue
. k  W7 U  x) i* q1 V
end
) v4 n0 u& o0 m- \8 V! s" I  P* M  X5 `, Y
to poll-class2 v  ]- h! u$ j" Y( Q( |5 [& P
end& C$ n" L& l  T/ D  J
5 [( F. A0 R, m( O4 y) P* G
to setup-plot1
0 u7 O5 k) P* F. y/ _* C0 [9 U% Q
set-current-plot "Trends-of-Local-reputation"
' y) g: f( I  U: Z4 X5 k5 ~: |1 G

# }* b+ q: l9 o) eset-plot-x-range 0 xmax

9 }, N. A% C% `. [4 H# r* W5 m, Z) _% X" |
set-plot-y-range 0.0 ymax
# B% m- J8 }: b0 x! `7 L
end
" v7 Y) z1 y$ o# L8 U6 a% k2 D& H
2 `6 ?$ z+ G. xto setup-plot2. \9 x  b9 D" k+ S5 z) Z# J

. j& G, V  N2 u2 ~: @: i$ S5 H- oset-current-plot "Trends-of-global-reputation"
7 B4 f  p& I7 ^& _: S8 c

2 ?4 H9 ]* _- O2 `, sset-plot-x-range 0 xmax
* Z1 X7 o( ^: u8 c0 q& A
7 F$ R# |* x( t" O4 ~
set-plot-y-range 0.0 ymax
" s  }. w1 l) v
end; ^& i( V5 X. V

# D, ?% i2 Y7 s, nto setup-plot3; `: j. A6 U) D& b" A
0 |1 N* r* M  |& I, J6 [- W
set-current-plot "Trends-of-credibility"
" C. O. U. a& @- E" F) U
8 ?  e- w( g2 _% ?
set-plot-x-range 0 xmax

2 Y9 _# I1 B2 a2 x0 q# G
# s  ]* r8 S2 u/ t5 ]" |! A& t8 Hset-plot-y-range 0.0 ymax
7 m1 h- X- Z9 V" y
end" ^! w: F% g5 W! }$ J
" K$ c$ |* L: I" G* U
to do-plots
0 e9 }2 [7 H4 N$ N1 @+ Y+ ^set-current-plot "Trends-of-Local-reputation"9 i+ ~. a+ f' g$ C& N# |% K
set-current-plot-pen "Honest service") g  G1 o  \1 ^% e; c+ W& |
end. L, ]: B, N9 g: B$ B

1 R0 s7 ?8 F; T/ A& `. F% e[ 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.& \3 M: v$ e, k6 s
5 I. @: u. y! }( d$ O, |' H% 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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