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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:" C" H. O1 S( g5 g6 m
to do-business
' }' H: F+ {$ l rt random 360( Y# ^# f! `  x! b
fd 1! V" ^# \8 n) n0 W* h6 F4 }
ifelse(other turtles-here != nobody)[$ \$ Q# N* W& l" O" W6 d" ~" i
   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.
" @7 e! S: ~; o: W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! G, m2 Y6 A6 @5 Q: R$ ^. ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 o3 J- S4 r, b4 A3 {; ?   set [trade-record-one-len] of self length [trade-record-one] of self, L2 t  _" h7 S; i
   set trade-record-current( list (timer) (random money-upper-limit))2 `) E8 Q! P, L( Q, \
, d1 p. A/ L# _. B. H
问题的提示如下:
! {, s) U2 Y+ S4 }' [6 J8 k2 V! W$ a) e
error while turtle 50 running OF in procedure DO-BUSINESS
& M( Y) I+ Z2 \) h3 j& k! Q  called by procedure GO- y3 ~( p0 Q2 n' f5 u& E, G& Q4 _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- p# m4 K- z$ I% ^
(halted running of go)
8 K+ c2 K8 D4 X% ~1 l6 Y$ l2 X8 ]. x7 u9 p: p7 [% B& W) c7 y
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~~. B( K, R- |7 x0 P6 j$ m
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
& X# x6 r/ I# W! Z4 U4 h& Hglobals[( ]9 `/ H' b4 D0 k
xmax& X% I( y+ A; ~  X8 N9 h
ymax
% g# o8 A7 w" c& D3 T/ lglobal-reputation-list
3 O9 C& k* d7 _$ z1 }
0 b! V1 V6 o* n* f5 U! }! S;;
每一个turtle的全局声誉都存在此LIST
0 l- f  C7 s( a2 k) W/ [( bcredibility-list% X) }8 l* l* ~( W% H! L4 ]
;;
每一个turtle的评价可信度
0 Y( ]: m: v9 z" k& }. }' B% E, Qhonest-service4 X( P9 {3 c0 c4 @5 j
unhonest-service, ?6 [2 a7 O# @. Y7 c% Y2 e. H* G
oscillation
" a! C& z6 [, l; {% ^rand-dynamic
# F. b# z5 ?2 ~]
/ i; [/ z" b$ p7 L* M  q" i
/ y6 C- m7 ^0 Y4 {8 }turtles-own[  a# {" t* m8 m) V- W0 I0 Z
trade-record-all
0 m' z7 _' O  ~" V9 C! r- m9 Q3 a4 E;;a list of lists,
trade-record-one组成
: `0 L& l! I4 N. w" b+ z. x+ N6 Dtrade-record-one
/ H  I4 r( H/ C;;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 g2 @+ c" w( V1 z' e( n" Y

  \* Q0 T! G/ z6 q* d( A0 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]]
0 F( b4 H) H" I1 g% Xtrade-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 w# k& v& y0 X3 T  ~2 _" p* ]
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list7 V8 L5 |  B; l5 D" P
neighbor-total* ?- N; i! R' J7 T. f0 @0 u
;;
记录该turtle的邻居节点的数目
( [/ j3 l* B" _# H, T3 B: m0 |trade-time0 b0 S" h' a7 a5 \: Z# k" y, \
;;
当前发生交易的turtle的交易时间( T- F( E9 B6 U, n3 \2 o
appraise-give
" `% O6 M$ m! Y1 C+ @, ?;;
当前发生交易时给出的评价
  u: K4 d# Q1 M& pappraise-receive
* g! j! \  S# K6 g( W5 a- u$ h5 M;;
当前发生交易时收到的评价
6 ?1 n, w3 F2 @$ Lappraise-time0 c8 k& {2 i! y+ E6 H, b
;;
当前发生交易时的评价时间
' p7 W7 o2 ^4 Q9 z" Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# d0 N+ e9 o% V! W% j! X! ?- N
trade-times-total
, I  G& d$ t1 m" N$ ];;
与当前turtle的交易总次数5 M( t) g" F, L" t" d9 X. p: D6 {
trade-money-total
9 `( K& A3 ]' n; H;;
与当前turtle的交易总金额6 ]; |) g. R7 X! G
local-reputation
2 q7 W2 g* n9 J3 `2 ]5 P1 Rglobal-reputation1 z8 _2 B2 D, }- v/ z1 k+ O6 k% n( `
credibility
7 z/ ?" K) K) u;;
评价可信度,每次交易后都需要更新3 y- O& K5 o1 \. t- p) }
credibility-all
2 _3 e4 s. U. I& v;;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
! L2 b% R* C5 k9 ?: e7 I& N& v3 |. b/ a& D5 R; k( x0 T& F; ?
;;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' C% C# [3 _: ]. f7 \/ e8 P! ?5 v
credibility-one
+ H9 Y4 ^& |5 Z;;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% G1 r2 [2 G  F; K2 t+ b) k
global-proportion; S1 J$ \+ b6 @* h. D$ ]
customer
# j3 E- G. u8 m; c* xcustomer-no) L* l+ |* w# r8 ^; E2 M  q2 r9 i0 R9 a
trust-ok4 \( ?. p, r; D2 a6 D! c( p4 v
trade-record-one-len;;trade-record-one的长度) N( x6 f* `* i3 R9 A# n
]
) I, {9 [2 o  a7 [, v# I
8 I9 `* r, M* ~* ];;setup procedure) d4 r7 R( Q; @" r( w, n0 d6 ?

" D. c' T* i4 _4 s$ `: U! y" d) Sto setup( j5 V% E6 \  U3 U; s

6 T/ S1 x: ~* g: x# `8 F8 Gca
# p( A- K# J9 ]) [% e1 R

1 C) A+ U- R  B7 M  N8 Zinitialize-settings

1 u  m2 Z! N# c9 @$ h- a* R  \  Q
. T- I8 r1 F# J- i2 O( |! j9 Ecrt people [setup-turtles]
) r% Z+ ~( N4 s

9 M1 H3 D) B! V8 @0 p5 \reset-timer

- l- ]" j* D' }5 j) H: w
+ T  f) M& B' n- _& U7 spoll-class
& g6 ^2 a4 O5 U1 c/ ]

9 J$ d8 J3 E- vsetup-plots
, t2 N2 i7 ]8 F# o% M4 L) m
$ K; v$ Z. m- \9 G3 m) Y" n& `
do-plots
: k6 L; S/ S! z
end
( K+ g/ K3 s1 F! @, \7 ?' K+ `! ^; K; I- A
to initialize-settings, [9 I0 ]# `7 W4 t
2 D2 s- D1 e3 l$ K
set global-reputation-list []
- k9 N, F" {/ @7 H, o- S8 T
! a$ G5 ?, ^- G( t( ~
set credibility-list n-values people [0.5]

2 X4 N0 S: U5 j- M+ w( j! N9 E6 B* p. f" k; }
set honest-service 0
" Q3 @$ N, K0 P7 N  }4 q; q  |5 o

. ~. E. b" R3 w' y3 q# k, @set unhonest-service 0

: f& M2 n4 X- D; n& E8 S( v. f) r1 Q
set oscillation 0

2 w) K+ U; L$ x2 R# T
6 r8 G6 w8 q& n3 \* D/ Z9 q: Mset rand-dynamic 0

7 l, O" v8 U1 @+ O/ jend3 j; u/ Y5 s* u2 K. m8 F4 k* M$ G

3 R# {6 D' Q2 s! M6 Q" R9 C* Kto setup-turtles
! E6 H/ x! i" U) v8 xset shape "person", M9 t8 y5 v+ }. s
setxy random-xcor random-ycor
8 W6 P# W; ~- p* Wset trade-record-one []
" h2 V6 a, T2 E0 W  o3 _9 Z
! M) W! x3 C7 ?2 H3 N" Y
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 e" G: P+ C& v! E- j! `/ v
& G" \" ^: w& D1 P
set trade-record-current []
/ v# z% \3 f1 S' d/ a4 Aset credibility-receive []
8 [2 Z! o6 B3 l8 H1 R5 [set local-reputation 0.5, b7 G8 i) R: b! A. p4 H, V
set neighbor-total 0
: A# ?& M0 ]9 j; x% l0 pset trade-times-total 0- c, h( o6 T; c7 q  I( @* U
set trade-money-total 0
) X3 Z% K. z2 U$ e: K+ A; dset customer nobody
* a7 o- S4 ~' {) H5 F6 ?set credibility-all n-values people [creat-credibility]8 K! M  m: J$ \2 F$ n2 J
set credibility n-values people [-1]
7 m( d( |/ {  L+ Y1 ~1 g8 bget-color
3 C" ]8 i/ q2 M

3 h8 v  [* ]3 l& l2 [end
6 _5 w5 V  R! ^+ ?/ A, B5 e% ?
/ M2 y  {8 |/ s" H: A6 |  m; Cto-report creat-credibility3 c. P! G9 _: L5 F$ h) _9 A
report n-values people [0.5]
( E6 W5 B9 w+ L: z* n0 O  Nend
! M! Y8 o+ v! h( \# g. [
/ `1 o" L4 q$ uto setup-plots
! m! V6 _/ D1 w* w
4 W0 ?, N, v. A/ W4 tset xmax 30
6 t1 h( \- w9 L7 H( a$ v

% O& v0 O$ R6 t- F+ p  m. D% ?set ymax 1.0
" v& q% w8 e. {  K1 N7 O

& }8 i# P* Q' O, v, Rclear-all-plots

3 T- N7 g2 v( k  ~* G
9 K1 Q% _- K+ l6 Gsetup-plot1
9 ^/ h# p9 Z; b

4 X( v% b. @& Tsetup-plot2
9 r, T  H5 S& A, G$ ?0 M0 ?1 e
/ v4 ^, i( }+ Q4 A0 t# K, S& z
setup-plot3
$ e# }3 R% F% {* b  j; @; v, s
end
9 {; C. C; D' E6 m* E! x, x! o; G. H, l7 \% F
;;run time procedures
9 {1 `+ k( g* A: |/ A7 B
% a- V5 W4 S1 L4 D1 w" Q1 _to go
7 T! d& p8 [- e4 n$ T4 _. ?7 h# J3 f1 \8 d! G) g
ask turtles [do-business]
' z: p, L* H9 q3 d$ k
end0 \5 T5 M2 i, n) [& U+ e

; T& J/ {, Q% `& N3 ~, \to do-business
& r* I6 y8 L! I+ K$ C8 J: N0 \: ~
6 e* q" r( ^3 ^& u/ C

6 B4 n( e4 n. }! L) B) hrt random 360
7 u  a- y3 v3 p2 f8 f
2 x! ^0 R0 J) E
fd 1

% B& i5 T' L8 s: f
2 J7 H4 D2 @. D5 Oifelse(other turtles-here != nobody)[
) Q: M! P$ J* w' u# z( |# F

8 I: {$ t) H5 f8 {$ \; s; sset customer one-of other turtles-here
. w7 F( I+ h1 y7 w* d) @6 B

( d1 v6 K% c1 K% f;; set [customer] of customer myself

! J# l& w$ s9 @: s$ U8 Y, \  T! r' G) n% b$ T/ |# h! g
set [trade-record-one] of self item (([who] of customer) - 1)6 e% S2 p6 }3 v2 E3 Y; b
[trade-record-all]of self3 d: f8 v9 q( ^% N' I
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 p8 y+ m* H$ u- W- @# _
# A6 ]- E7 L3 j5 `3 ]
set [trade-record-one] of customer item (([who] of self) - 1). z  P- c: N/ [# m
[trade-record-all]of customer
; s1 ^0 w3 P- K) B

% c* V7 F# H% vset [trade-record-one-len] of self length [trade-record-one] of self

7 A  z5 j5 q  a) [: y8 O/ S- V  o
, I$ J$ z6 c. j; @8 G9 d6 s; ?set trade-record-current( list (timer) (random money-upper-limit))
8 i4 o3 r" A2 @3 e+ [1 ?, k

2 y1 R7 v. V6 [) M% Kask self [do-trust]
- p/ v2 V/ K# X: f# P+ y;;
先求ij的信任度0 V1 H+ V5 V% u$ Y; u0 L
3 r. \; {1 D$ K$ d
if ([trust-ok] of self)
2 o# x* k3 l3 n& J9 }1 m;;
根据ij的信任度来决定是否与j进行交易[3 u7 b+ r9 l8 q& |, Q+ a# i( d) T/ [  M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 V4 N' K. P& y5 \* m/ K7 }2 J

0 @4 S( K. @5 {/ r- \' v, L[

( k$ }2 ?0 ]! j2 J+ l+ z! d* V/ Q; @) `% B( V
do-trade
, [4 u" ?0 G' G

: s/ s/ V( K/ [/ E# \update-credibility-ijl
& t7 t! m" i5 J  {6 w# ~
1 f' E3 R) D+ i! ^# f$ G' S, R
update-credibility-list: k- C2 N3 m  R% W8 W

4 S9 A$ o. O: u6 `* H$ p+ k
  q  Z* v+ ]% E- F$ Qupdate-global-reputation-list
& u2 L9 l, \. `; Z3 c

9 n3 M1 d: w4 f( A8 Lpoll-class
7 W; p. V& N& T; I& E
( T' l! G, ^$ G, t* S% T
get-color
7 U. j/ ?/ v9 V0 J' r6 A6 h
  _  h( A0 N6 w4 ^
]]
! e9 n  ^( m/ Z* Y1 C4 v- u. k2 f8 T6 H/ m5 Q
;;
如果所得的信任度满足条件,则进行交易6 N* p! ~+ ~8 u( }

- O# I( x5 t5 T* u. K6 {0 t8 v[
3 j% ]- N8 ~2 i
- Y1 U- ~9 k" Z1 {
rt random 360
' P+ x* S! O) q( C; K1 C
- m7 T) o0 E" U5 H7 k
fd 1
7 a) `! v2 O0 d
# G: a. M$ z/ i
]
5 P' j  f$ a! l2 s
5 [( U% B" t0 G7 [. n" w* G6 `" V
end

( ]( z9 P& C% p' q
3 j( Q! O) u4 e/ u& ?, i, Nto do-trust , ?/ W" S9 `+ O& @  W8 \, u% }
set trust-ok False& M, j! x) n0 p8 p, O, K
8 c9 G1 g0 b; g( a4 h1 K

' G8 c8 F4 t; r; f/ K* r. ~/ Xlet max-trade-times 0
. C3 a( r' p* f/ p4 U& Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 T- z4 Y1 _$ J: G2 [1 n+ V0 e
let max-trade-money 0
' ]) j3 u1 |1 a) g/ xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, C/ ~; S0 Z- p  Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" i6 Z2 C$ q; h4 ^! ]/ s9 Z) T
2 S0 D+ ^! B6 z- e+ O

3 h( v3 M+ F  |4 p( D; w; Aget-global-proportion9 f/ M) {1 J  m$ B% E/ ]- h
let trust-value0 T5 W& e, h% 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)

/ H: I+ D3 G7 B& e+ @if(trust-value > trade-trust-value)
7 p1 _6 `, x6 O% {" k& i& O[set trust-ok true]/ Z* }3 P1 w( e, c. |
end; ^3 ?6 g( T4 M3 L

0 v; d8 K8 Q8 z6 D6 e; N6 sto get-global-proportion' L# Q+ X# i- p9 |7 A" `8 T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 q0 V& X3 R% B/ m2 ]+ N( ][set global-proportion 0]
3 n" B8 h# f5 a+ Z$ p[let i 0
% R+ J1 p8 n2 K  S5 N) Z3 H  P  G- Xlet sum-money 0
5 |3 N7 q  Q& g+ L9 O. G5 swhile[ i < people]
* a' _8 \1 G7 o9 U[
+ ^; e6 n2 V5 `  J+ f# I/ R- kif( length (item i
2 V0 L9 |# P8 L+ M8 U[trade-record-all] of customer) > 3 )
  z) U2 i/ h4 W' E% V7 ]7 w( p
[, l/ ]0 ^/ p8 j. `0 m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; I+ q9 _3 d$ I4 ?) I& f: P]5 C6 m  p9 B1 r% G" _
]
0 Q: }9 H7 T" y9 v2 C! f7 F9 m7 ?. ylet j 00 J4 g/ L3 q1 y3 K  z2 [
let note 0. `( Y8 E; Z6 `% q) B
while[ j < people]* V8 U. Y2 z1 [, B9 L9 w2 M: N$ o
[
, w4 o: Z9 D( |1 v& @) _. u5 m: Bif( length (item i! R* Z+ V* o3 W& Z- D( i* l/ Z* q1 Z
[trade-record-all] of customer) > 3 )
; w+ g  k5 v# v8 f% F- {5 C
[$ f+ }; ^: w* H0 ~' Y( \
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- @, u' u' }- t) ]0 e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 U8 W" b& ?" M$ y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ u# o7 ^9 k& a; E" m& I6 }]
) u6 r* b! ^6 ~( I3 i]
* z1 i2 a& v' i$ I) ~+ tset global-proportion note
  q* n. w- H) D( O$ [( V% X: `]( a# `; p; ^6 Q* k! m$ r' v# ]8 S' P
end: a- Y; R0 N9 h! e. V; d8 l
6 f2 l9 k4 e9 C/ m
to do-trade
7 g3 [. {6 S6 ^4 p6 y6 C;;
这个过程实际上是给双方作出评价的过程
+ a0 H, v0 E" L6 l  D9 e& I3 e' nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& E6 |  m, o6 j' [/ m" Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 C  a/ Y1 Z3 G9 v7 rset trade-record-current lput(timer) trade-record-current
- _* c$ Z1 Z2 Z* U, O) ~;;
评价时间
  L- O' L. m4 s1 q9 F* ]ask myself [' s) f0 T5 `* _9 H
update-local-reputation- e$ W% S4 b3 M2 Y# @5 o
set trade-record-current lput([local-reputation] of myself) trade-record-current
$ {. l$ }$ B6 e5 @- b% y; x0 Q. O]
# D6 l  S5 x0 d0 P1 tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 k4 j4 G7 q* }8 n8 h
;;
将此次交易的记录加入到trade-record-one
; T, }  c/ l: S2 j6 o  Q' ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* C! H. b0 s1 ]0 Q; u8 P; O
let note (item 2 trade-record-current )9 b+ [; E" a( b% \3 o* m) V! q9 s
set trade-record-current9 @. O+ Z  F0 E
(replace-item 2 trade-record-current (item 3 trade-record-current))

- @8 W$ S* C3 E, Bset trade-record-current
& a: k$ h$ t  {+ q5 h(replace-item 3 trade-record-current note)* i2 ^  Q9 c8 I  |9 x
2 {/ B8 H. @1 ]) ^4 g

5 @3 f+ Z1 @1 U! Z3 }5 i) iask customer [
+ b$ n/ {+ R3 Y2 Y$ t" wupdate-local-reputation
% x) Z3 s$ s8 @1 A7 d: A9 w* Tset trade-record-current% t5 K$ k4 C" Z2 V6 @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' Q, m' M; t- T3 M1 |" m* t
]
' f2 \8 P  D7 W
  T( n6 g& ?- z  }8 u. o% x5 m' H
8 X  Q: W* T0 O: y9 ]6 d. _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- N4 [8 D) I, d4 A1 G7 k
9 o3 n; q4 z+ K0 }; V9 p' A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! e3 {) h6 {  o
;;
将此次交易的记录加入到customertrade-record-all
1 t2 l8 V- n' x7 T' v9 mend* L, j3 d$ v6 P$ C# [
- e$ @0 \, `2 s, {5 m
to update-local-reputation  w. q- R( }& ]% \5 g% u3 g& `
set [trade-record-one-len] of myself length [trade-record-one] of myself. S$ @9 s4 N+ K* i* A

( G/ V' T3 f1 T8 b! j3 a3 F' z# r: `$ L
;;if [trade-record-one-len] of myself > 3
% H$ V! f* J: h+ M$ E1 I
update-neighbor-total" l, J: W* x. l$ ~0 J& Q
;;
更新邻居节点的数目,在此进行  g' [& H) n; s1 B
let i 3
$ X! N: K3 M- Blet sum-time 03 G/ p) S# `/ a
while[i < [trade-record-one-len] of myself]
" }* K) f1 u8 V! n7 k- |4 j[
/ B0 c  ^, z, T9 g! K" b+ e8 Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" d5 w; J$ e- r
set i
3 y4 n$ `/ p: w# f- E; O# P( i + 1)

) j2 A4 ^( e! x# n]
, a" O  l5 q4 b. \+ Tlet j 3' I3 S0 `8 _+ t
let sum-money 01 X5 [- W1 G' }( Q' C
while[j < [trade-record-one-len] of myself]
& E, |* [4 ]* r5 {/ q) O+ q[/ p4 s! ]1 C! \9 U8 O
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)0 {# o  P) n; B4 W& o& w+ v$ R
set j! Y( J7 e" V4 S+ A* ]  j
( j + 1)

7 p  F  e, n& g- E0 t]
& ^" Q8 t3 o' f! |) clet k 3
6 O& u0 {$ g3 v; n6 z* q( nlet power 0
5 z- L" x4 ]# r) X! X. Olet local 0
1 H' u9 p$ T, g5 Z3 I8 jwhile [k <[trade-record-one-len] of myself]( c2 l8 [" \6 z/ K4 h: \. F
[
+ A2 N) e; n# O3 e5 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)
6 e" Y! h2 W5 [0 qset k (k + 1)
( n2 w+ o! z/ @4 u) m3 s9 k$ h  s]
4 ^3 u3 _/ {9 D: x7 }set [local-reputation] of myself (local)
( P$ R# X4 B8 I  U, A; lend8 z; B7 ], J  \9 e8 l) t9 M

+ y( i9 y' n0 G( F& W9 z$ j" kto update-neighbor-total
2 h. I% p2 x- ^9 L
, c6 N# ~9 Q* y, v0 Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; h' h" I$ h# @

( _8 ?: y! Z" H7 Z. r5 l6 g5 d
6 F, {- R, F9 o; D# w' z9 K
end& p' p* S- R$ W
& z2 H. Q/ F0 x
to update-credibility-ijl - k* [( A6 ^4 D2 {  k

) }! C' z- Z4 R4 C, E" d: q;;
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。
2 r  e+ O* M6 G9 R2 Ylet l 0  X+ u% K; g; z" x
while[ l < people ]  s+ h% }& u; @2 E2 z
;;
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
, N5 O1 @0 S, G& s$ y[
4 f+ L' e+ w" a. u! G/ e) E7 {let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 N& ^, F: m. Q$ c& q  Pif (trade-record-one-j-l-len > 3), I; p# D/ P7 q$ k* ^6 m! _
[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
* P, k9 [: y' Hlet i 3/ x) G% o6 b  _
let sum-time 09 T7 X: K2 T  |$ _* k+ |6 b
while[i < trade-record-one-len]
5 M. C7 D0 J: ^3 u[
! P+ D, R2 y, H$ Z4 Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 ^. ]- c1 T5 }& N& }: E' yset i
5 }0 {2 x# e! ~7 w# u6 D( i + 1)
$ b/ r! }7 Y* G
]
( v. e9 q: d  z" m/ n* H- E4 blet credibility-i-j-l 0
3 y$ V5 V  t/ }$ X0 y3 {4 c2 f;;i
评价(jjl的评价)( Q' u: b. d5 y  g
let j 3
0 u- b8 F- U9 tlet k 40 I% E$ F/ o- k# `. y' W- g
while[j < trade-record-one-len]1 t5 g+ y. r: ]7 _7 M) p
[
5 O  i$ E( u4 Pwhile [((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% s6 w# v) e8 b& p7 b5 v' J. W
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)
/ s: z' s* T9 j- f% h5 q: o' F3 Lset j- F7 x. n* \& u/ E  k" q- a
( j + 1)
6 a6 `( m  ?0 V# y. l3 h
]/ [! A& c& i1 i2 k* l& E
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 ))2 p  k, M6 t* I: r/ R( M! i
4 {( p) v9 W2 I0 [! A1 k7 f% |& ?
& j5 e" [  ?! W4 M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" T  H: ]5 H' Q% a( s6 ~5 E5 L;;
及时更新il的评价质量的评价+ r% D$ z2 t. Y4 T( Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 J$ X: d( N9 Y6 Rset l (l + 1)
: y1 w2 U2 c& j0 b$ L& Q: x7 B]
/ N! P& s& I' lend
: e& g$ X4 v: z) C- h
: {( q) @  l: Ato update-credibility-list$ j7 _, o- w$ o* h' H
let i 0. J6 @8 _/ y/ @( G8 [1 O
while[i < people]* k6 z. ]$ e. H4 k  O
[
& f) {$ j; p1 J3 k: d9 ]: ~3 ^let j 0
# B0 a. _; o! X  K7 mlet note 0
" F* H- d: C) l0 r/ H9 Flet k 0. A' w. i( R; r7 R
;;
计作出过评价的邻居节点的数目1 b0 M6 V9 d1 g& s- v# T( g
while[j < people]" G* F% V* J" m& O2 D, U+ Z- w/ u
[
8 I( ^# n8 t: n9 Q8 _if (item j( [credibility] of turtle (i + 1)) != -1)# H0 w1 A6 Q0 Q: a5 W8 E
;;
判断是否给本turtle的评价质量做出过评价的节点6 p+ o" P- P) d5 @7 t
[set note (note + item j ([credibility]of turtle (i + 1)))5 C! s& U0 O- J! Y
;;*(exp (-(people - 2)))/(people - 2))]
; @: g# |3 w5 v/ ~5 V
set k (k + 1)
5 T' i5 C$ V- {' L* @5 O6 a8 U4 o2 g]
9 K4 J; Y& d/ Gset j (j + 1)% Y9 ^+ y6 m! {# L9 P
]9 H. i# [; O( K; q* Y& p6 e
set note (note *(exp (- (1 / k)))/ k)
1 X# ^1 S' {- }& {  Bset credibility-list (replace-item i credibility-list note)
6 J7 j# N; e% s* Tset i (i + 1)' k- C, n) z$ X2 d7 E
]
. ^6 [- {' X$ `# c4 v# Eend
! L7 V8 A5 @  q. H8 s- h- a+ a+ k3 ?. B% I4 B
to update-global-reputation-list/ r( l5 }. G$ Y5 }  J; ?% y
let j 01 o! x% @7 S0 }& X  s
while[j < people]/ S- x9 ]4 o! O7 L' Z; i
[
$ s9 i. z5 u* R9 k0 Q. F$ Glet new 0
( U3 \$ |3 @, [% U* d6 U7 i;;
暂存新的一个全局声誉
0 [' X# y" t  i' [% s' R1 ^; vlet i 0. N& g6 ^9 n0 g" U& ]- n# z
let sum-money 0
  r" ^6 C$ U" ^( }4 Slet credibility-money 0
, o( q0 Q7 F+ B8 @% W% l% Bwhile [i < people]3 ?! ], j0 e( \/ }0 z
[8 m; j6 \. M7 E4 V2 C3 J/ o# X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& P8 q& x' M$ _0 g  bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 f3 ]' c2 S" W+ \$ n" |7 p0 n
set i (i + 1)
, @9 D1 u3 r( @% Z9 Z! U- a]8 c# _9 k: [8 i9 i! T3 A- r9 V
let k 0
; h) c3 t4 K; K: O) Slet new1 08 D: G. e2 X4 m2 I: t" K" |
while [k < people]' b# }4 p: c: v6 a
[
! G3 c. ]& F  f1 lset 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)! e4 `' u) X# E
set k (k + 1), M/ u( F: `/ M; v, I# A
]
. ?; x# A1 ~" f9 R3 [' ^+ qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; y, }/ _2 v! E" U
set global-reputation-list (replace-item j global-reputation-list new)
, h& @! j, F9 `; s3 Uset j (j + 1)7 [  `- z0 ^8 ^5 i
]
! A7 A  i3 d) B5 ?0 a" \9 Cend
! E+ D3 F) z8 ], e# G( ]# o3 f" U6 M
, D$ {. J/ q. @+ H, n0 p' a9 E" W
- ]( i& x. S* }: F$ d/ z! N/ g0 n2 H6 X5 d
to get-color
( U1 w' C3 d, v, e$ Y8 [- Y6 P6 ]5 h0 Q+ W9 f: J7 g
set color blue
/ }: _4 d( v! K; a" t8 ]
end
) z7 O" B( `- ]6 H' m6 ?' \7 h- {8 u( B" J  v6 E! Z
to poll-class
1 p6 }. a% O3 H. ~, I8 V: I5 ]end4 e% z* E% g& ^

* M  I; e1 D, \+ ]; p" R8 w5 Rto setup-plot1  V+ }) X4 g" {; I5 ]
6 R1 E. R/ j: N9 c! N
set-current-plot "Trends-of-Local-reputation"
- c0 B! `. m1 V
0 U, D/ @3 I' o  I. h; `
set-plot-x-range 0 xmax
+ U! h4 o8 X- d- R( t( u

+ i+ @$ F  X# b0 Uset-plot-y-range 0.0 ymax
! S3 A& m' q" O4 f9 y; \  [+ ?
end
) @0 V, Y3 t: f3 T6 k6 ~" a. }. U$ s; c+ J$ o
to setup-plot2
( B* x5 u2 {( X6 m; a* s; X, n" L0 s; k
set-current-plot "Trends-of-global-reputation"
9 j) p5 v: T  w0 B

( h* w; F8 g% q* V4 w! sset-plot-x-range 0 xmax

! u0 c/ s5 ]' e- G- B5 ], M# @& M5 ?
set-plot-y-range 0.0 ymax

8 P9 F: R+ t7 Bend$ J3 t$ i7 [* X$ c7 p

2 J9 f% h+ H4 s! S1 {+ f8 Mto setup-plot3
* H3 N9 ?+ `7 \& z+ G" M9 w2 J: `( f
set-current-plot "Trends-of-credibility"

- W; b; r+ t3 S& J! {; Y. h; _  A) u  j+ `( m& i
set-plot-x-range 0 xmax
7 j+ \: [$ z2 N3 n+ N, w) S
1 x. i3 X1 J0 F/ }
set-plot-y-range 0.0 ymax

! y. Y# G2 h- a" d5 |& ]end
. W) ^3 M" y/ r0 D( K, Z" S9 q8 d, A( o0 O" f! @) Z5 s0 ?: j
to do-plots9 i; \7 ^) Y! Q* \
set-current-plot "Trends-of-Local-reputation"$ W/ Z9 v, m1 N4 E3 d
set-current-plot-pen "Honest service"
3 F8 X4 r! f5 @' J) n% pend5 C& i2 h& Q5 z& t' E

- Q9 D+ L' m9 x4 y! D; {0 }[ 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.
4 |3 I8 A! Z6 Z- q& i& [* F; y* j- W" [- Q3 Z& g
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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