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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:
/ v" Q  ~: K9 d/ J( g# w! k* uto do-business
: f7 P' F7 i! o  K! I5 C* h rt random 360
: M" G. q# m3 I; V fd 1
  c1 _7 c! a# I0 l4 H ifelse(other turtles-here != nobody)[
& Z9 X7 `  {' h! }   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.
5 @5 y5 ~5 [) }0 B9 J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( J1 b+ j+ q4 s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 i& s/ ~& K4 Z1 ?
   set [trade-record-one-len] of self length [trade-record-one] of self
; q& J: T- N* w, j8 @. i3 }   set trade-record-current( list (timer) (random money-upper-limit))
, h' M7 A) |+ B1 j
$ u5 _  l! a" d, v5 z( q% i% p4 o! t问题的提示如下:
% G0 D, @- @& b7 B' a% J" Q5 _
: e2 @# Q; b3 }- M& z! S" oerror while turtle 50 running OF in procedure DO-BUSINESS
5 o& P. K: c/ L% F: z! _) V) \1 M  called by procedure GO
/ G9 E0 Q+ ?  m" F! eOF expected input to be a turtle agentset or turtle but got NOBODY instead., T- z5 L9 Q' G
(halted running of go)! Q" d, p! f  z8 u$ c9 K: V% E
1 k; B9 O! n5 V+ _9 z: f
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~~
1 Z6 [' d, U# h/ o4 B7 m# }! x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
& Y0 l, |6 Y, Q( E7 D9 Sglobals[
- T$ F: T' a' L# Axmax9 S- n* Z2 y6 n4 O' M4 ?$ H
ymax
% ]$ ]$ g0 F# N( l7 u6 V& k& jglobal-reputation-list$ a" h) `) x5 @* o; b
" O! u2 ^) ]2 ?3 ^7 N
;;
每一个turtle的全局声誉都存在此LIST
, r! v- N+ b2 G" u9 ^9 wcredibility-list
1 D4 X5 O5 ?6 f7 S9 d! C+ `;;
每一个turtle的评价可信度
) k9 z' r% z$ C3 X; O9 W% Uhonest-service' g: s, Z2 v5 K1 w% S# x
unhonest-service
1 _2 O4 T7 R0 N& W7 \6 J1 T" yoscillation
3 o0 E8 ?, ?! S0 `% F: trand-dynamic5 G% L4 ?, i. R; y0 x3 ?* q4 {
]4 S# A$ u! {& G0 Q3 p0 O; H8 v
6 D+ I. ~0 x0 d* W& X
turtles-own[9 g" A0 a! [  U2 c4 \
trade-record-all
# z& i# Z/ P# R: _;;a list of lists,
trade-record-one组成
5 l5 Q6 A  O  h+ g# j6 y1 |trade-record-one9 v# n0 x# k2 F7 u, n7 i  f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 g7 d' C0 u) m5 M8 j5 O& B. ?8 J
, A6 B2 z% e0 [
;;[
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]]
% c" N7 _" [" h: Ntrade-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]
" M( D! [  q! J! dcredibility-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
4 k' F. d0 }+ D- ?% p8 O9 r2 eneighbor-total
1 s: r2 E% `, @% G" M# f  h  I;;
记录该turtle的邻居节点的数目* @0 }( T! J& l
trade-time' X( C( W/ O$ Y) W# U6 S
;;
当前发生交易的turtle的交易时间
6 v* k3 @$ Z  D1 T4 Sappraise-give2 o; S8 j# ^+ M+ p, E
;;
当前发生交易时给出的评价
* W0 A& T9 t' a% t( F- C& Q. ?appraise-receive
3 a9 Z+ I3 P) ~: U8 e3 r;;
当前发生交易时收到的评价( w: k; L) Y% C# S2 d
appraise-time
* c7 B# \( R- X" x$ r4 J: M5 k;;
当前发生交易时的评价时间
/ \% M* [' Z6 |& R* Q9 y# Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  i7 d" W+ u9 p; I$ p
trade-times-total
3 r. x5 O" m  r" X;;
与当前turtle的交易总次数+ m  ]; z, r$ O1 z- S+ Z
trade-money-total3 I1 k  x# [3 F  |- L
;;
与当前turtle的交易总金额
" k6 S& a, \7 Plocal-reputation# I; {6 K! z2 @( v9 H
global-reputation. l+ [7 Z  }# x' `0 @
credibility
( b1 b: c! ~4 I% {/ s. K4 y9 {;;
评价可信度,每次交易后都需要更新
7 o- T2 L: ?5 {credibility-all
9 S4 ~" d! g1 V6 c% j;;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
  J5 a) ^% t0 H" k, B0 p1 U. L1 _* X6 \# S
;;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# P8 R% j+ W0 ]! p# [; D
credibility-one
/ h/ F" S$ ?( u& Q) m- 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
* P- Y4 K! I1 }2 L. F! I6 Mglobal-proportion
" q: P: K) y' d: A7 {2 q$ D# b) H1 m' \! Vcustomer
; O/ ~) s* a% Scustomer-no
& w5 G" P( \- U5 U* Y$ J- Ptrust-ok1 M: }; d% K6 S$ V5 P+ T  f3 x. `& J
trade-record-one-len;;trade-record-one的长度: }" S- s! ]- o4 w- \& w' y
]
' n6 j9 {) R7 D5 M0 N4 ]/ O. s) V* A. u4 d: G4 \
;;setup procedure
2 y# c! ]) R. }- s9 ]1 s- b- Y" y) W: S' ]0 w% f
to setup, A& v+ f2 p. b% h
3 }8 B. v2 k, s
ca
& O: `+ i# I8 D6 A9 [& N, x* p$ q
, r7 I$ t' x6 e* g! c& q" K
initialize-settings

# o1 v% k, R9 i, Q/ S/ O0 H+ f+ Y* ]0 w! B0 |8 W  G. u0 }
crt people [setup-turtles]

2 R1 V7 Y1 H( [8 k4 a* C7 |3 Z( K( Q" a) i; i1 a% W8 g5 D9 Q- [2 B6 X
reset-timer

5 E7 k  g5 y+ z+ n2 Z( |4 s$ L  ?! g/ G- O! Z; K  F/ p
poll-class

& ?; q7 h; f2 Q- i! m; m4 I
) U# E# O3 F: n- u' p( Bsetup-plots
, P+ y& U1 L" w+ `

9 ?  x, w  u. ~# x+ ~" zdo-plots
" t; R3 i: }/ T1 |& P' d) h
end6 w( d9 l: z$ ]6 r* K" ?
* R# L1 j9 S& H  z. x+ B
to initialize-settings4 P7 K! q2 T5 z' E
8 E) p* b) g" o7 O5 Z4 U$ G
set global-reputation-list []

. e9 A- J7 w1 M) u
% v2 V* k+ ?, r2 f$ L# R  h4 E5 Hset credibility-list n-values people [0.5]
- p8 |7 x( x0 \- t3 K' h% r( i9 @

; W% U( F/ E8 g& E; }. Oset honest-service 0

% t3 O: }6 k) ~" {4 o% N. j7 r# B% G. x# e: G4 o+ ?3 ?  ?3 K
set unhonest-service 0
* B- c1 t1 n% b+ }+ {' r# O) H9 a
7 F4 o8 G" C" N- r4 ]
set oscillation 0
0 C4 i/ w& y- v. C5 h" o& e

5 l5 E* O0 c, h  Z6 ^. W% Gset rand-dynamic 0
# l) Q* h7 {$ F0 k3 Y
end
: q5 B: k+ p' Z, y8 c* Q# N$ ]( D( B8 v
to setup-turtles 7 M1 A8 v5 y+ D% U
set shape "person". T( ~8 o, R* v" E- l3 Z
setxy random-xcor random-ycor
, L7 [; ?+ K$ ^2 G( g( Hset trade-record-one []
& G& c  o3 D9 j

6 s( o, `) {; a7 n! tset trade-record-all n-values people [(list (? + 1) 0 0)]
4 ~$ t+ Z. e! S5 ~' B; k

: T2 T) K: V# M" tset trade-record-current []- }, _6 h5 r& N) R( n; c3 M9 _
set credibility-receive []3 L- W) c, d4 H5 Q
set local-reputation 0.5
: y/ E/ t; j2 iset neighbor-total 0
( t: b5 ~9 E3 `) e# t" @# \set trade-times-total 0
5 T% _; D; K  e/ xset trade-money-total 0
5 R- X7 y/ d% F2 M8 [set customer nobody) K( Y3 l& S- e9 c) Q
set credibility-all n-values people [creat-credibility]
6 o; F) B. {3 o5 q9 J( O8 _set credibility n-values people [-1]- e5 D/ x- B4 X% I9 K2 `
get-color; d! i. o4 K: M0 O

6 Q! ?, j  k2 s; u  Z0 `end9 W' j# `3 [, q9 |7 R

8 Z9 A# O: v* x5 ^+ h$ r" r( c" ~to-report creat-credibility
. s* d% Q1 s, q# @) h1 @report n-values people [0.5]
/ e- G( ?. Z: g3 v# `; iend
, e5 U: A( A3 D% A0 |& C/ N3 k( R$ w
to setup-plots$ c, u$ i5 s' r% M; Z

/ I: f# t) W* P3 W- @  \! wset xmax 30

  T1 L4 {! L7 i1 Z' n0 \7 L- p( |# B! R
set ymax 1.0
% }$ m# `4 A# d

# A& }$ g: Q3 R) ?( K1 O. Dclear-all-plots
' u! ~1 S4 g. U. c) g
, ]% k: ?+ G. T: x' ~0 O
setup-plot1
8 ^- [) x9 a; Q1 R5 O% U

$ ?; l1 f* ?1 @2 [5 C$ Usetup-plot2
6 n# `  E/ X7 Q- `
# S1 T% l0 `* ^0 g( ^7 t# o! ?- X
setup-plot3

) E: z; R; k3 V5 d& \: gend
) A' h: z, g4 u' i. K! ]  N0 c0 [+ B- b& K6 Y
;;run time procedures
1 B5 `/ ]9 F! {' u4 s1 V  I9 S5 x' E, G+ s1 G4 M
to go
6 |* H$ y( z( ]/ a+ \+ N) y$ D% n+ {
ask turtles [do-business]

  k- t2 h! P" c$ L# i- q6 @end
  M- Y) G# R* y" {5 v4 V, E3 Y" @: g3 c6 a
to do-business 6 ]- X2 Q4 c# \0 ]6 Y

" h8 W- B- {  @8 p( Q: u
: v0 N& O! b7 X" qrt random 360

) \0 Z. B. Z+ F0 o% ]' C$ N% E2 Y; K5 \2 Z1 S  G( ]" a
fd 1

! }. o! d% V* u7 n! H
) e) S1 Y! F( kifelse(other turtles-here != nobody)[

2 W* T1 j7 l8 Q% [& i# Q8 ^$ O% F' s* w' q
set customer one-of other turtles-here

9 }5 i, {2 Y$ G5 Q* p3 B2 `! S& J( q; t
;; set [customer] of customer myself
! w  |5 [5 v/ \' P8 S5 G7 c
; S& S9 c$ A* C
set [trade-record-one] of self item (([who] of customer) - 1)/ z; k2 z7 Z3 G* Q- U$ v
[trade-record-all]of self* q/ M) y% i4 R% n
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 \% Y. {9 S( g6 s( A

7 T# ?. X8 k1 Mset [trade-record-one] of customer item (([who] of self) - 1)  P5 ^# e# k; l/ D! x
[trade-record-all]of customer

& c& R; b7 [' C+ G% ?$ h6 Q
6 B+ E" C  n/ x$ [- B3 Dset [trade-record-one-len] of self length [trade-record-one] of self

% ]  ~3 `  b/ F$ Z" W: p/ q- g7 G" S, _
set trade-record-current( list (timer) (random money-upper-limit))
. X% i) O9 o. {
/ i+ y7 T8 C6 N; X# m
ask self [do-trust]& C1 Z1 B) d' L# n& [# F) D
;;
先求ij的信任度
8 ^& F" L: M& t0 c( R8 R
9 H7 E9 ]4 p7 X* D3 o, [if ([trust-ok] of self)
3 Y! \2 G: I+ x' o;;
根据ij的信任度来决定是否与j进行交易[
, H) q3 T6 {: Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' w$ N1 A6 f) T, H

: `* C* R7 h  `) U[
/ j$ Y3 B, P. _0 i; h3 ^+ y# ]  t
9 W. g# x  t% W4 ^
do-trade

- C3 w: G6 Z/ L
9 P1 {/ s# \4 X% m" C2 l% ^- |7 p+ nupdate-credibility-ijl

5 [7 I+ B5 U( Z* i' c$ ~. [. v0 I3 t1 `
update-credibility-list5 P4 L9 a2 ~# K9 F, {

7 c5 b( U6 D. j3 n1 t6 S1 p1 H6 _' U! t
update-global-reputation-list
2 Q. ]0 ?: x, Z0 n
8 s7 ^+ Z+ C1 E, m) h
poll-class

, Q) A6 ], ?6 o2 Y) D) d1 g. H( ]* r: s, v
get-color

$ b1 m: ^& I. A
6 R" s8 k+ O# ^0 d. m6 f]]
2 m5 B" x' b% m, b, K$ i! V( ~8 K2 R/ p7 H6 D
;;
如果所得的信任度满足条件,则进行交易3 u) U1 G5 W% s
% N' z- Y6 k$ S+ ^" e; ]
[
2 Z9 {% `' {1 |1 G, ]; w2 |4 s
; c+ L3 H% I: s5 M7 t
rt random 360

! f. I" D8 b: r7 q3 C* `$ M9 R8 @+ G! J- I
fd 1
8 u/ n% f: u3 E! w6 Q

$ S1 a& A) |+ V  `$ Q/ N0 t/ b]

" R* }$ G8 o& r" s# Q+ h" X
2 j2 @6 W$ \8 }! y/ K) d9 J; _. E3 g( hend
# B3 U: P3 r2 ?: w0 z/ ]

) J3 N7 D  r* U7 Y9 kto do-trust 6 J& z5 i9 L, D5 }7 b: q) W
set trust-ok False
7 V+ l% Z9 W; O3 c
9 E! ~* \& m) U) ?6 s' ^
8 L9 o& r5 v! q
let max-trade-times 0' Z$ |6 E4 g1 F1 M  _6 Q5 W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ D, e. M* ?% [
let max-trade-money 0
8 x/ \1 M& ?1 w; @  bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) S: T( x6 t4 g" m9 M9 w3 @+ }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# {- [5 n- g' H. m% p
3 k' w- u( z0 S" g2 _) o
9 M8 M( J* Y) S% u
get-global-proportion7 [! D% p2 {. H* f
let trust-value
1 P0 V6 Q; s3 ~$ 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)

- j4 N- k5 b3 Tif(trust-value > trade-trust-value)
5 C* d: f0 `- l[set trust-ok true]: g9 o, k/ O9 E; p: `
end
; F! S8 S% q/ A1 S, _$ k8 l, |" i3 L, K: z; K9 X- c
to get-global-proportion) M# m0 B: F* Q- _; a" L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 T6 ]  z2 K9 D, m& t[set global-proportion 0]
7 R1 U# U1 V5 ?  n! O[let i 0
, G: p) N& |& i* g2 D+ ulet sum-money 05 w9 T8 e7 j' z# b4 f6 L2 ?# K5 f6 F
while[ i < people]! \1 ~# n/ A2 c! }6 h$ N- ?- P/ I+ A
[
! l: z7 y) r6 n6 q2 ^if( length (item i- T* r$ P2 ^, V% |
[trade-record-all] of customer) > 3 )
! [6 \; d7 m( p: e+ S
[$ k4 d+ j- Z' O5 q5 E% y9 J! G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: I8 x2 C7 f! m* g]; s8 ^: N( t$ L3 \! u- J
]5 [( u0 o& J" U; i% [# s( {
let j 06 P9 n8 |2 g! J2 M3 t! \' l
let note 05 I7 s* n9 b+ M/ T5 `' ]/ v4 v# K
while[ j < people]; a- I% j/ {" ^0 g( n: J& k1 d' f3 h
[, B  o% ~8 `/ Y
if( length (item i3 w# V3 L/ z0 X; ?
[trade-record-all] of customer) > 3 )
4 ~+ T  {3 w1 |( T. A
[+ @3 ~5 j* z& S! [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& F/ Z& X; ~* z3 T6 @  X
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. P" ?0 l: D( F3 W( s! e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; ]' i" A6 J/ P, \. c! T
]& M& ~& ~8 U; Q1 K' j1 V1 H: w
]
0 P1 k0 J( a" sset global-proportion note
( d9 `1 T4 F# g]! t, q/ [) ^9 V3 g' v1 \+ b8 h
end
& }9 Z% u; E: [' }$ L& t: v" `) M* K
to do-trade6 j  z/ ?7 c& B7 C* I
;;
这个过程实际上是给双方作出评价的过程- L2 j5 l* X1 G. V  X+ w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 x+ Z0 p; p4 E0 `% h$ c" p: t: H, Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, W7 Z: G4 p7 nset trade-record-current lput(timer) trade-record-current
( ]4 C$ ]5 O6 }' \% ?;;
评价时间
" U7 _+ ^7 @  Y, Q  z; u0 Nask myself [; ?9 t% `# S  ?8 d0 [9 K1 Z
update-local-reputation' K" U, E0 D4 @# [
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 O. J! P/ t* G# t]
! A5 H' b) O2 Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 M4 M6 v7 _! R6 j+ m$ L7 b: z
;;
将此次交易的记录加入到trade-record-one
* @' f6 ^- p1 Q+ mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" w# L# A2 t( h0 N1 U
let note (item 2 trade-record-current )3 g7 q% }& N# K( N
set trade-record-current0 E3 l5 s4 i! ^" x5 E
(replace-item 2 trade-record-current (item 3 trade-record-current))

" D  n/ q' e3 w2 y1 u5 ]set trade-record-current
, L3 J/ {% z1 f7 y4 B(replace-item 3 trade-record-current note)9 [3 B* j1 L4 x5 s
" ?# U* c( l7 _4 M6 n. \: T
9 o2 ~. L1 n. \7 h( m, f7 o
ask customer [
4 u1 x; d6 O6 g' Gupdate-local-reputation
1 [7 @7 T3 R: \8 @1 X9 mset trade-record-current4 D1 ?1 @; y3 p7 g1 k7 [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( B7 q, R# ~9 n' ^
]! }/ `% s+ N. z3 \  ^
  |9 a7 Z3 D! r* x( e$ I

& j2 _+ A$ T$ |  K7 r& Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. g4 c/ c' I0 V. [( q% i

# b, a4 e2 F3 q- z  Y$ c  fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 |. Z3 i8 m/ [. |, T/ ~% `) O;;
将此次交易的记录加入到customertrade-record-all( |: y6 Y% N' K
end
# {9 h0 X- M; E0 H
4 B: I1 ~3 K/ p7 t- nto update-local-reputation
2 g# u4 v4 n" W2 ?! o5 ]set [trade-record-one-len] of myself length [trade-record-one] of myself
7 R! l! A3 c9 }+ j: c2 G) ~+ W7 h" I0 I" O" E

( R4 Z! A( N; C6 X2 v;;if [trade-record-one-len] of myself > 3
! d: d1 {  N* u+ i. p: L9 ^7 S
update-neighbor-total
$ R; [0 E2 x4 u9 N5 e5 j;;
更新邻居节点的数目,在此进行9 L! I! @' i+ H2 a
let i 37 E8 i9 Q& L3 L5 i  {
let sum-time 0! q7 Y. G0 w/ h3 c- L
while[i < [trade-record-one-len] of myself], T, M8 Y$ s9 }3 J5 H
[! M1 c$ q. y/ n" @! K( G% \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 ~4 Z& W0 I6 G1 i8 {* vset i
/ g  B/ F1 J  R& i  [( i + 1)

1 u; Y2 A0 z, U& `4 |* _]
- S0 ~3 H3 r- g9 w: _3 Llet j 3
* M3 m- [9 R+ U, S: ilet sum-money 0
7 c, n& `' M2 B4 N$ a+ X+ Cwhile[j < [trade-record-one-len] of myself]/ i6 u; R( Q2 b1 o" T# I
[1 X) M% s9 e+ B0 s- T
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)
7 S- `5 V. g/ c3 W) h5 F2 a. |set j
3 b' R0 E6 a! `+ `' ?% P! [5 b( j + 1)

- @# f, \) k- L8 `# R]7 S* k% g* b7 v6 R1 A6 N
let k 3
4 H) {. h2 I$ Z3 \9 ]let power 0
+ X$ I& c: ?, M/ x3 B3 f) y' ulet local 06 A: _7 X  G1 K' _* [
while [k <[trade-record-one-len] of myself]
1 d% Q$ J( m$ I: s# h0 N) U[
" N! z4 M' T% w$ f6 @0 oset 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)
, J3 r0 j0 }% |  F! z  N1 Z$ Hset k (k + 1)* {4 l9 I- z) e
]
! C& A2 U' C4 a& p2 T' o0 Rset [local-reputation] of myself (local)4 ?* ]& _1 e+ Y! e: F
end
" b7 N, X+ N, Y" T
4 A2 Y, A3 j8 a4 G2 Kto update-neighbor-total' Q- l. Q) t4 D* i0 A# N
' F# j8 h  n' W9 [8 V, @7 V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. X$ M: @- ^) g
  m2 d) _: x8 a: {8 z/ S" q( B

! F8 e# d% [$ S1 ~! g/ ^end
: H" c. B% O2 I$ B( T% n5 j* a/ v# J
to update-credibility-ijl . r# d- d- P" W6 |  l4 q& ?7 U# H
9 r8 n8 p# W6 B
;;
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。
. d, i' L: j/ y/ r; n! plet l 0
7 w* C7 I6 G9 j/ O6 zwhile[ l < people ]
& b+ j2 n5 N4 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
% q0 c4 _/ m( o# t: S5 L, ~: o[
* f, n& j. ]* Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 y2 b  J3 y/ |
if (trade-record-one-j-l-len > 3)
, V! K; B4 k, h2 n- f[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-one2 V- P/ [: S. l: d9 n! i
let i 3
, H6 [0 S: C& d& f5 Dlet sum-time 0
; ^6 J1 o" X; x4 d; r( swhile[i < trade-record-one-len]
. [- R: b# p. J7 }; {[( s1 y1 u/ e2 N9 Z% T/ L) g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' q$ z. z0 x6 D/ p3 B  C% |set i
) N0 A, b6 l; W( i + 1)

: Y9 X: J) w7 S' j! }( F1 ]]( {- F0 X! |" \& H7 z( ~5 m
let credibility-i-j-l 0  l" Q9 W! X+ K
;;i
评价(jjl的评价)
& m2 B9 z9 G2 u$ ]let j 3
& y  d9 L0 D7 a/ ~( B! Elet k 4
; ]& K! E1 _0 p* c; fwhile[j < trade-record-one-len]
. m+ ]0 k. X& O; E[
( W5 C( r4 p+ J7 N  ~, P) Awhile [((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% Q9 Q, R; H) F2 g; }3 o; S3 Q
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)) S0 N  z3 B3 \
set j
- [+ l0 Q9 {  A/ U( j + 1)
; n5 \2 r: F: L& j
]
- }7 }$ x. b$ A) aset [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 ))
$ N" O6 z3 R5 Z4 U5 |! N* u; x4 i3 u1 }% f
9 W5 l: n. U" \: f1 E. {% r5 l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- m$ ]1 E7 V+ ^, U, _& M  [;;
及时更新il的评价质量的评价9 x! ?; _% m: L. X& Q: t' ~/ N* ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 J, u  N9 v) ]# w: W
set l (l + 1)6 z5 ?" M' v* C& s7 ?
]  U2 W. u* q) \7 y
end
- ?  S7 w9 M' y5 ^) G1 T) ?+ o- x
" R5 h- V0 w8 ]; T+ q$ Lto update-credibility-list! ]3 s# V3 p& V
let i 0
( ]: X" x7 ^5 c' @# ?4 n1 Y9 ?# I3 iwhile[i < people]
& F+ o/ i3 l6 z/ f8 L) Q2 X& U[+ h3 g/ A3 I8 N1 }2 r4 H8 n
let j 0/ n' y3 |! t6 t0 `  n5 R; _: [
let note 0
% c3 ?- K$ I2 K% jlet k 09 F& e; z/ N, i! X/ m
;;
计作出过评价的邻居节点的数目8 p) n9 n8 U& u2 F5 m( p( A
while[j < people]% |4 }; p0 X& D
[
. `0 M6 O8 X2 E6 ~if (item j( [credibility] of turtle (i + 1)) != -1)
$ g# W" o7 I& c: b$ o4 g;;
判断是否给本turtle的评价质量做出过评价的节点8 X; s8 h. g6 N/ Z+ @% w
[set note (note + item j ([credibility]of turtle (i + 1)))) `5 d6 a+ j1 k) D" [5 f
;;*(exp (-(people - 2)))/(people - 2))]
- }: C! O/ N" Q3 K' \: }& ^" x
set k (k + 1)
% ^% a5 J+ w) J0 w]
5 a8 h! Q7 }) ~7 t. Sset j (j + 1)
( g4 D1 `3 v8 F]! p, e. ]  K1 S5 n  ?! G
set note (note *(exp (- (1 / k)))/ k)
; j0 Q# R( D; M% @3 Cset credibility-list (replace-item i credibility-list note)( J1 M. W* v- y) d* S+ M
set i (i + 1)# E, p# `2 Y1 t- _
]4 l- ]! r! a+ q
end3 Q/ [1 Y+ _# G& A/ _3 g; D3 ^( B$ r
' O9 E' q, J% Z1 Q) o
to update-global-reputation-list0 m9 a5 K; N! ~7 c" b6 l+ b8 m
let j 0
% B( a9 ^: W0 `6 g1 ]while[j < people]' w8 N8 ~# o  `
[' N  Z7 `" a& T8 {9 @
let new 0' @  O2 t0 a) i$ K& G9 y
;;
暂存新的一个全局声誉
6 W7 y  J# D: d, [let i 0
* c1 D5 \+ X! Vlet sum-money 0
; R( X! e$ u7 k$ Q6 E* Q* M3 r' qlet credibility-money 0
5 W7 P& _- w' q9 F& H& O) J: s8 }while [i < people]
( i* R7 E5 ~7 j: k3 P) ?[! Q) {0 f& o1 a' Q7 @; [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); D( u6 D8 `# B+ @" G9 A
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% ~: A+ j  i% F" @3 o6 N
set i (i + 1)4 z! ^  s+ s) r+ F" t8 S0 g
]
! X& w3 h6 o- `6 p& G9 |let k 0( n) Z: T2 S( i0 E4 ?
let new1 0- {7 W& J1 M; W, r- s0 p' p2 ^
while [k < people]
4 j( W' l. j; e# B4 Y[8 B/ ~- X$ N' n  l4 ]
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)
% ^: Z  j# \  |5 oset k (k + 1)3 w  i4 m/ c3 A, X+ e' p( p2 `
]
$ O) N7 T0 G7 ~/ R4 r# a2 W6 @, jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; q1 @; [: O! @  [  _: R% rset global-reputation-list (replace-item j global-reputation-list new)
# u3 x; u5 c+ s7 J* V! W3 bset j (j + 1)6 g1 L6 h3 q2 }$ z7 Q+ X$ s' V
]
) q2 Y1 C- v3 D6 {- R# e% S2 {end
- b- |. L  f3 @9 d  A
' M" W. V% ^: }0 f3 H, W) e' x2 n( ^; ^6 F6 Q, G

; e- g: q8 X( i; ~/ gto get-color2 S, ]' J5 J3 p7 S' g7 M9 p# a- H

4 i& d# O& A" T- U  D* Hset color blue

  ]/ H  K# d3 Nend
1 U+ V# }; M( @, H
% Z& Y5 G& J% b- h/ S, K, Q, Fto poll-class
- v2 @" q3 a. M' m' f" Z8 f; m/ oend
5 {9 y# J3 q* _6 n0 n8 o% \5 X
+ f8 H; p+ z: C  |2 Z1 Tto setup-plot1
2 o( V# e. a7 l) K
, S* h* D: K, s( \& y: j$ Mset-current-plot "Trends-of-Local-reputation"
. r9 X( I2 {/ b1 r

* s% s! J% C. x" z& x1 ?set-plot-x-range 0 xmax
+ G) \7 ~1 r) \& l8 |6 f
  b# i& @7 @* T: _
set-plot-y-range 0.0 ymax
1 R& X) ^/ E* o3 R- ]
end
4 l; e& _# w" D& M+ g. Z9 ^
# j+ ~: ~' `( y" w; h' ~to setup-plot23 A; R3 X, K3 r  x5 y
' n( b$ H4 r/ z
set-current-plot "Trends-of-global-reputation"
! ^/ |4 i% ^$ f$ G! {

- a7 k2 ~, e5 v: m- g% dset-plot-x-range 0 xmax
3 {8 q2 U' j- Z3 i$ W, u6 t
/ w! E* N9 {: v% W. z9 W, V8 P
set-plot-y-range 0.0 ymax

, h$ j+ S4 I, d) zend% y1 s5 j2 ?! C2 Y4 G. z! l' g

- J# @. {8 }+ }+ Z. s9 g3 Yto setup-plot3
: K( e. j% m1 t0 i  @
3 d+ D* d- [" ?. mset-current-plot "Trends-of-credibility"

: m! W4 c% x: A
( V# I* A) L/ o' t; Z4 Tset-plot-x-range 0 xmax
1 c( v- f# }6 t- i+ U
  I& ~, ?1 F1 l  I% p
set-plot-y-range 0.0 ymax

. k# @" p8 _* {end
* ~3 b5 o8 m: s: j& h
0 E1 z3 m( a. Ito do-plots. Z+ o+ j7 B4 K8 g
set-current-plot "Trends-of-Local-reputation"
/ x- m) Z! l; ~, L+ V) Kset-current-plot-pen "Honest service"+ s8 M- [3 F) R7 ^
end
) \! X- I, H& i
/ w4 E7 e% ]0 U[ 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.: n+ c$ F% e- k" c8 I& F6 V1 R
" J/ X5 T) w! \3 L
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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