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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:3 P* _9 i! }* \7 [) C+ c
to do-business 1 ~1 h$ l8 i" O( H: B6 v
rt random 360
$ Q# ^) g3 y  G2 ^4 K4 y3 U fd 1
4 C, f4 s$ R6 g8 l3 H ifelse(other turtles-here != nobody)[. Y7 `" {3 Z* Z: B. {
   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.$ F0 H/ F/ o% h: j! |# n9 I6 b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ [/ G# P2 B, m# t4 ?
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. S  N7 n7 l1 D+ b8 U
   set [trade-record-one-len] of self length [trade-record-one] of self
" H8 L( ?& P0 X% C% }+ b" r. f! W: B" B   set trade-record-current( list (timer) (random money-upper-limit)); ?% e, T" _- b) u1 _

8 I0 b" h; W( I: l2 f6 A问题的提示如下:  ~, D9 [7 s2 r* E+ f! R
5 H0 u% U: `1 _3 S3 m
error while turtle 50 running OF in procedure DO-BUSINESS8 q' @/ Y5 [5 C: j
  called by procedure GO
' U- e! M3 C+ d" @OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; |3 t8 A% X( E3 p8 U
(halted running of go)
; m! |+ d. i# H0 f8 U2 n% p. H  j! M0 Q" U8 A$ {4 H
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~~
. ?4 E, W. B) @" e5 H' P3 i5 y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
& V9 h" C- s# B0 s2 Vglobals[6 Y, F* o; x9 m9 s/ Q0 _' C
xmax) K( R8 c8 Y& T( u
ymax2 _5 ]* U7 x# d" ?3 }
global-reputation-list! ~/ }; v5 f# K  t2 T, a

, J+ r% o% Z) J% S$ };;
每一个turtle的全局声誉都存在此LIST
) m) v& O( ?% |" `7 |$ F  B# @: }credibility-list
- C- @. n( M' C* r4 G;;
每一个turtle的评价可信度
1 }4 o# \. _+ a! |$ @honest-service3 l" r4 e9 z% B1 H1 Z  o9 I
unhonest-service
, e- ?" E9 p5 }8 I, s5 B! w% Joscillation# d3 y& C7 Q5 r7 E( a
rand-dynamic1 V- ^5 c, n. V) k" A" o7 f
]* P  p, S, J& u$ o

$ U3 ~& m4 r- f# s& ]turtles-own[
  {' E2 [( D5 a3 J" [& y4 ~trade-record-all
$ b& G7 M9 D; L. i6 D0 }0 Z, Q+ O;;a list of lists,
trade-record-one组成
* X0 Q. K1 X$ \+ ltrade-record-one
% C! W( D/ T/ r! m3 `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: h) |7 o8 G/ u( W- p
5 E, B# c5 j, M" Q
;;[
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]]3 ]' f1 k" i/ \) V% i
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]: L  J+ Z1 O9 c& r
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$ D! |% t& U; d! Z
neighbor-total
4 T9 M* [1 d: z2 [4 ?;;
记录该turtle的邻居节点的数目) q( J& w. u5 o4 a! L
trade-time8 d, W1 F7 c- ]+ p1 n1 c4 J% ?
;;
当前发生交易的turtle的交易时间
0 t) r! z. ~! ?5 q0 n, M+ N6 aappraise-give( k0 {8 e0 {& S( I. N/ b4 b
;;
当前发生交易时给出的评价, o( }% Q  l6 K7 q2 n$ P' }( {* ?
appraise-receive# _+ w9 @& H2 D  X& \$ `. @+ U
;;
当前发生交易时收到的评价7 d4 A9 L; Z8 J* v
appraise-time' f. M6 k' t% h
;;
当前发生交易时的评价时间
" ?$ g5 ^- l+ y5 v, v+ s( flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ D/ V, X" h  D$ Itrade-times-total+ y  N' v6 ?# N( \3 ?3 }9 [
;;
与当前turtle的交易总次数
/ E# [, ^. ]+ P  @+ t/ I" o' Ttrade-money-total) u% D/ f4 S# F% M
;;
与当前turtle的交易总金额) E$ n6 f$ m7 l
local-reputation
6 f3 d; f& h# H8 y* T$ Fglobal-reputation$ y# W2 {1 d! h' F5 O) `
credibility4 b' p/ _( e5 A/ E1 w3 A
;;
评价可信度,每次交易后都需要更新) M0 h: e* X& m* V  C( O
credibility-all1 l' ?: }/ k8 a
;;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
0 F, \; O# r. d/ Y; R
4 A3 @( k  @5 Z6 a/ j1 ]" S7 p;;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
0 H8 }! j: o0 P4 D1 M% Lcredibility-one3 V- Q0 n. q0 H7 Y) y2 U/ Z% L
;;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! u9 `1 i$ N  ]+ u" b
global-proportion
+ G9 F' J  k7 ]8 z6 I7 S9 R' Scustomer
5 n4 a! F' \# h  `+ a8 dcustomer-no9 v+ ~7 Y' c: C& i( C
trust-ok9 w& m. r, K% D" ]
trade-record-one-len;;trade-record-one的长度
* V7 G; c$ v: k* n( I  T& W]
" l* @& x  s; j( d" W' H+ g+ ~" L/ e
;;setup procedure) @5 t- y0 _- l4 j$ c4 G' X) G

: Z: O' Y* X9 Y; h) cto setup* R/ G: I4 ^9 M' \

1 ~2 a/ ~% d: j6 v# cca

" C. Z& j6 q( x" Y7 t/ W& ]( Y2 N# i1 J8 Y2 u: _  y2 r' T, B# B( o$ A
initialize-settings
$ J! a* {) ^  u' ^6 X; H$ H
  |' j& \- B- b4 G" q! M' _/ A
crt people [setup-turtles]
- Q, `- F$ b( v' R. |( l/ O* d
  y% x. y! `# c# s, v
reset-timer
4 E- G/ |3 x5 N' q- T
1 F* q6 a4 C0 o5 \
poll-class

. N" `1 O. m3 H4 S3 c4 {2 u5 Y+ s+ \% ~4 |* i& I# l; A. g
setup-plots
7 a6 r8 y6 N% i! Y7 Y7 ~' _

! o+ `4 O/ x7 P) l  W6 ^( R6 P( ndo-plots

3 w8 P7 m3 X5 C9 Pend
. r+ s$ z) d) i0 t, C3 o- C5 x9 l  F# _9 Q* f9 X4 ^
to initialize-settings  R4 |, ]3 S5 i' }* b  A3 s0 s

* o" A' ]5 A9 H+ W' G% Yset global-reputation-list []
$ _, I! t8 q* {9 c
4 s% v1 r8 v) K5 [; s
set credibility-list n-values people [0.5]
% b% E7 v2 C! x( f0 P, K

% l% k" [' m8 R( L: uset honest-service 0

2 r* T3 E; j. i
7 s3 d8 N7 D) \8 t; l2 ~set unhonest-service 0
4 Y1 b; Z9 D+ M

* r& K1 w0 l- B7 i1 n  `9 Vset oscillation 0
. v! ~/ K8 f! A( h0 H
$ j2 V) @/ V5 y! u$ U+ E. t2 g
set rand-dynamic 0

' e9 e/ o5 Q8 l" \2 uend
; {( g+ _" s% D2 M- ~  i# E5 F8 m" O
to setup-turtles 2 I5 I: W5 ^3 A
set shape "person"# k) H2 q$ g  Z8 B! U# a' s) G
setxy random-xcor random-ycor
( f/ z9 y4 Q6 R& A" Zset trade-record-one []" ?8 d2 M2 t/ ^
( j  @7 V" G9 z1 ]& F6 Q) a, V
set trade-record-all n-values people [(list (? + 1) 0 0)] % e4 p- w* I8 @9 f+ q# x' A9 D+ C
4 O0 R1 l  x; D4 d$ J
set trade-record-current []2 Q7 S" d! \$ C6 N
set credibility-receive []9 f' b5 L- }5 z1 y( T! Z4 R
set local-reputation 0.5
; g' Z  @3 I% R9 A% ^2 E" q0 wset neighbor-total 0
1 U4 p5 R1 @4 E& Gset trade-times-total 0
% d8 }. H. ?0 Q/ N  O7 [set trade-money-total 0
) A! k1 L: \& r6 k6 |set customer nobody
3 ~6 z/ i5 K6 y" Rset credibility-all n-values people [creat-credibility]: I7 B( n1 z4 g9 z4 d
set credibility n-values people [-1]5 S& a) r  f8 D) i
get-color( I: v# R: [1 e" M

3 }- Q  h5 k. r9 o0 j# l" e1 Oend$ L, q$ i& n# V/ b+ q

5 ?4 b/ c# q+ U$ Lto-report creat-credibility
& f9 e; y" Z# Q; Jreport n-values people [0.5], t% X7 }0 k6 ^0 i# O# n
end! V- A1 r! H( t8 N$ D; b- u

2 Y0 |% ~  o3 X3 Qto setup-plots" C3 w( q% O# e& U

! X8 u2 f" l% b- |! W% G$ d! jset xmax 30
5 N6 }) v' e+ y- B6 G6 Q
' h' ~( D4 p* m, C& h
set ymax 1.0

( m: H6 l! s2 k6 k6 L# v
& c- H, ~  e4 V' Oclear-all-plots

: R+ U) o$ H8 o* Z" L: ?: N5 I3 s/ g2 |1 q
setup-plot1
  y8 w3 ^9 u1 C$ Y2 I, D7 E

( O) J) S3 u# R6 ~8 g% Dsetup-plot2
4 G  n, k! O, M' A

, P& D! y$ `- Y/ Rsetup-plot3

: M5 m* c5 F. X" Y2 K* F; wend. Z( t+ K2 K' i- p( P8 F, F# Q. Y9 Z
  ]6 s5 H9 ?. q& A# S  V! _
;;run time procedures
8 u) g+ O3 ~+ S0 G4 U1 ~/ k: L% a+ A! e3 Q* |' j' b; y2 i" L
to go
+ I9 X. B4 b9 i( g# H0 M
" F3 Y, T4 m; W* pask turtles [do-business]

5 u  r2 u# t( k- Q" X; y# U# gend
2 v8 j/ w- A! e( P* N6 V  N3 q) o: x& J6 ]2 l, v4 Z! }' P
to do-business
, x$ }8 O6 m/ T* p6 h6 F- x
, E- t& A! Z4 ~; j/ @- y" n
* E% h; i8 b/ K: G3 S9 _; s: q2 [3 p
rt random 360

  |' R) p! O" T9 U  i  Z4 _' H, W. l
fd 1

% [" c) a. d: W# r3 \9 B8 Y
7 L/ T+ u4 V8 q( Q' _- T/ P2 wifelse(other turtles-here != nobody)[

5 ?' w1 w7 N3 `: _
! i5 O/ [- R- Y7 L% r$ fset customer one-of other turtles-here
- K. h! {7 {( r0 @" ^" ]
% U8 l* {+ F8 J7 w) T2 z. Z/ v& K
;; set [customer] of customer myself

* l0 `  I5 Y/ F1 C& p5 {: m+ t% _0 r$ V$ S  R5 d; e
set [trade-record-one] of self item (([who] of customer) - 1)& L* u% x$ V+ y  H; ^9 U7 z
[trade-record-all]of self
3 d  G) L$ w0 g7 Y) O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& N) J9 d$ q" R" e& ^! z6 G5 x7 z8 B: f1 |7 C
set [trade-record-one] of customer item (([who] of self) - 1)2 a8 K. k3 P" B) X$ E
[trade-record-all]of customer
2 [' L9 i- H  z8 p

$ x  a/ `! j: w) q, E0 P2 ?set [trade-record-one-len] of self length [trade-record-one] of self
" T' h. W1 ?+ F6 \& E4 N
7 ~$ T) @  X$ R
set trade-record-current( list (timer) (random money-upper-limit))

" T8 t- l3 S" G' a% j7 S+ {2 t: N- K+ K7 o+ q- D
ask self [do-trust]
4 }& o7 K7 i- K5 v% l;;
先求ij的信任度
5 j3 O$ Z1 `% @2 y7 E* r* \: w, ?( V: i( H; z8 n
if ([trust-ok] of self)
7 }" }+ O" q; ?' F;;
根据ij的信任度来决定是否与j进行交易[
/ A0 O2 o" |, H& _% F" cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) {0 n8 Y2 p8 N
4 a! M. l  J6 K; h* U# x[

; Q! R9 ~0 ?" M$ l' D0 I' m
/ T0 Z7 s" V4 o& _4 e* g6 Q, ~, Xdo-trade
8 c0 B5 e8 z2 G# w! h' Y$ ]

( j2 I, E; Y' E# b4 Gupdate-credibility-ijl
1 p3 I) k& w1 G
3 m3 y$ b3 Y; z3 L4 _
update-credibility-list8 t+ u6 o% K/ P# ^! n. K9 G0 Q

: c% a( Y4 W/ }0 N  i! A: _& b3 w$ S% e4 B" S, O( G2 I
update-global-reputation-list

' I$ y" P+ }# X$ V% [) x; X' J& k0 \* @9 f# y
poll-class

& k5 R" w, I' e" i
# _# t9 {# r. I0 E# k6 J, Oget-color
+ K: Y- H, a2 U. R
* R3 z: q- V- l8 O
]]5 M+ ]6 B. M4 e/ H7 l7 R

7 d+ \6 P3 a- A;;
如果所得的信任度满足条件,则进行交易' W/ g, @# k  O+ h
: m$ T' i: n. Q) x9 ~4 j  ^
[

6 i% l" W7 W0 \+ L* o% {* s3 N( f# Z' s# G! I) w# u, ?  `0 G
rt random 360

! o& j& G% f) r8 A7 A8 i$ r' @  _! I2 M) Q
fd 1
" v3 m  R; g0 p1 Q; u

% X$ S9 l) ~( E" Y, Z]

8 S& j. M9 e1 Z1 M5 v& M$ x0 y4 C! @) w
end

( E0 `2 w4 u3 l2 P+ d
2 l  S2 e7 E. g7 k3 [: mto do-trust
  ~- z4 ]) b6 D+ Hset trust-ok False) Z! i9 ]) \, u- }4 Z& l/ z
4 X4 Q! J; A$ a* w: b
! x" d& \! u$ R9 Z% u+ s" f
let max-trade-times 06 M6 a4 z7 K! t. Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ c% @) Y) l8 q6 F$ W
let max-trade-money 0
: I* o2 ?: a$ wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' @# A% E3 b- N0 O: b2 z5 {% [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 S9 r1 I% M' J4 u: o: J
0 S! {6 l1 q) w+ J/ A
$ R+ x& F/ U% m! W" I3 q
get-global-proportion9 |) o' S( Z4 k) ?
let trust-value
6 d2 @" \2 w  I8 W! o# b' M  v# a8 dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# N" G; g! ]% ]( i) aif(trust-value > trade-trust-value)
; g3 w" B- [$ R& I0 G" ~[set trust-ok true], [0 ?- E( ~" M% q9 d; N0 G, }/ U
end
7 B! t$ l" ]( }, \; Z, L0 C8 \3 t3 G0 K
to get-global-proportion) a' L5 g) M4 Y2 W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 ?5 I$ P3 G9 \# S, A
[set global-proportion 0]
) o6 X& u3 W$ O3 Z4 o$ }0 e. }) e+ m3 J[let i 0
! Z0 T4 s8 b9 B0 T  v+ O6 Dlet sum-money 0
8 }; ~" {! B9 v( A9 I8 v: Jwhile[ i < people]$ B/ S% H* a1 J$ D
[# I% n# E. t" x: a- G4 B/ S; T
if( length (item i. b) k) j. `4 U& ^9 p$ T6 l
[trade-record-all] of customer) > 3 )

: y( r- u; Q7 t' t  ~- u# Y) n* X' W9 {[8 H  S* X! S7 m0 \- ^! g! U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 o4 w' G5 v7 b
]  d% c& {& }# _
]& e7 X5 ~8 d$ i* ^9 S) v$ B  P% d7 J( C  t
let j 0. x. {+ G8 t+ O3 r
let note 0% `. _" c5 J$ ]
while[ j < people]
* z$ g1 x  b% W1 l7 Y[
$ }" d% n$ s! W$ r% z& `if( length (item i( }1 B8 @# Y$ p& G( X5 b
[trade-record-all] of customer) > 3 )

5 N7 d% Q3 U9 R) Y; ]6 u7 E[
# u$ t, a% B  Z' w4 H% Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 d( G, }6 y# J) r8 x[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- a7 r" h. M- f9 J4 @9 h- R1 b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" _, I9 J: \/ `6 d
]# s/ {  e" l% W) z
]
$ l! {& `' E, f6 T  N0 b; W0 z  nset global-proportion note/ F& k6 k$ J$ a0 m- ]
]6 w! `" d) }2 G0 _! ~- D
end
1 Z& d, R; t  d& u
; x. A1 ?( i) h8 fto do-trade
: e" a3 E, Q3 z2 \;;
这个过程实际上是给双方作出评价的过程
% V/ `. K- {9 aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ C' y; j" i2 x; J/ e! I5 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" B: ]9 H  f$ Q4 D
set trade-record-current lput(timer) trade-record-current# t# y& p, c' L0 Y' f
;;
评价时间
9 m+ X) ]+ }6 j, x& `) p* Zask myself [7 s) x7 N/ t8 |# U) z. E+ f9 t
update-local-reputation
" ^) r8 a/ \# w% W/ l: ^  S5 I* Uset trade-record-current lput([local-reputation] of myself) trade-record-current
/ d( j6 S* q+ \& {6 A# ?& @8 E]+ N+ y7 X  C7 h# r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* B0 a( U: p* r9 v/ P;;
将此次交易的记录加入到trade-record-one3 o1 p/ k$ ^+ x( I
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 O+ I8 u- N$ M* Z% h0 e) @
let note (item 2 trade-record-current ). d. K. u6 w2 t
set trade-record-current$ h' t( _0 K" z: r. A
(replace-item 2 trade-record-current (item 3 trade-record-current))

) F$ o; E9 O7 y7 Z' C" v, Fset trade-record-current, W. W/ H- _/ H0 F' ?
(replace-item 3 trade-record-current note)+ V- p; N0 {8 i% P5 s% r0 x

! \" x+ U9 l/ V

: k- o: x& d5 Z# yask customer [: F6 _3 h+ j1 M; e0 }( c/ N
update-local-reputation
! h$ x" e. Z- ~3 Pset trade-record-current
. d, A6 C+ h5 c1 w! V; g: Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# S( r& a0 N4 b2 t]; W3 q- n) E6 E& |4 V7 E

7 N! K" d" Y8 ^9 `' u7 z

; R; r# u! r, ]  j. A9 O" D0 uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 h4 _1 V# B' y- e( F5 C

2 Y7 l' S1 b' R% `% M. Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( C0 t; A  i6 Z% y; I- o4 M" Q) ]( S;;
将此次交易的记录加入到customertrade-record-all
" v! j  s7 `1 X5 ?; k& k) A; Q1 P" k- Nend
# z! u. T) H+ O1 J/ A1 H( `
2 W! l: Z* J1 j% {# k/ s) Eto update-local-reputation% u0 b% K6 }, N% H- g! d" [0 j# g2 |9 h
set [trade-record-one-len] of myself length [trade-record-one] of myself) R$ N/ {1 I5 }: I" _$ a4 U" O# H; b
  g, u2 K6 p; ^5 K5 C9 K/ r% S
0 _" q& y3 o' D/ G
;;if [trade-record-one-len] of myself > 3

, J# Z" K, f1 V5 e% y3 Qupdate-neighbor-total
$ W  q4 d9 f' W3 d: t. p;;
更新邻居节点的数目,在此进行
8 R: x- Z7 |9 _" a  V# R, vlet i 36 Y5 p% U7 v/ ^
let sum-time 0
% }' \  J6 Y/ Gwhile[i < [trade-record-one-len] of myself]* D* f; }: {! O$ I( R0 O( v* j% B
[2 k- c1 q* ]# X/ s5 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); f7 _  \6 i! i- V2 N* _5 d
set i. Z4 X  V5 }6 b( S8 l
( i + 1)

4 u2 _- T: ]1 u( R3 _, G]* {' n! q5 d) _* e2 O8 D% l
let j 38 U! L2 H0 e' W, I
let sum-money 0
" B3 k  r$ X# H. N! w; {3 @; c4 I2 iwhile[j < [trade-record-one-len] of myself]
  T2 L! K- R, R- c[" M6 v4 C7 z; J  t3 p
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)
- \" ?: S8 N# s! ~% d$ mset j
& q/ t$ g: }3 N3 D7 s: N/ k( j + 1)
) d7 C+ I! L3 H( f) y1 b
]
1 y+ |$ i# q: B6 h) @5 @' Zlet k 3
0 \, y: C& g2 j" p  }% olet power 0
1 e' c! H7 Z9 k5 slet local 0. @8 l: W% F- W+ @* {# Z0 b$ ]9 x; E
while [k <[trade-record-one-len] of myself]( z, P2 }, v; t8 p. E
[
4 r: J7 j, u2 O" e0 r' @* _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 i/ F: K0 v' j2 U6 z3 s+ a( v" v) R1 Sset k (k + 1)
6 w+ X5 h0 E5 J7 u8 B# q+ B- |5 R) D3 w3 }]5 L1 v" @( Z; U% w+ Y' T7 C' O
set [local-reputation] of myself (local)
3 O' l" A- D9 H) `end
6 D0 V4 ~$ Q5 M$ j
, ]) t$ ]. x1 b0 oto update-neighbor-total
. ^0 |" m) R/ V* \; b  c7 H' m7 O9 x5 D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( E1 S+ E1 r' d% ~# G) S
! s7 G6 Q5 z8 r2 p0 i1 k# l

7 l+ s9 M# D! l6 kend
) @4 O4 p" [/ I/ d7 G8 i- ~! f3 \- A6 @; h6 J* q3 @+ V+ B( p
to update-credibility-ijl 4 x/ N0 z  @" e' L
  S% I8 b& f7 E+ l- b9 y
;;
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。
( X" U# ~9 @, M+ B  v/ Alet l 0! ~' o" n) E, L* N0 o
while[ l < people ]2 \" w9 y, ^2 f* e; L
;;
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
, j3 b0 c) _2 M[
9 r6 @% z1 c, k7 H* Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 T# D2 x5 _3 R9 h" H0 c
if (trade-record-one-j-l-len > 3)& O: M! w3 y2 Y7 V7 e0 S
[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' L& Y6 ~! S0 O; a
let i 3
' c( A6 Z4 f4 z2 `. rlet sum-time 0
) W* W+ Q8 \+ m$ z( W( pwhile[i < trade-record-one-len]
- q# s: S1 q% G( H[
# ]1 ^) @( w6 j% Y+ I  }, yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# u( L2 P' q" hset i
; Y! F( }3 g( e( i + 1)

5 H" M& ~) i$ a/ h]
, w  ]0 M0 ^9 ~! Vlet credibility-i-j-l 0. e% c, }, l: C1 w; Z8 b
;;i
评价(jjl的评价)
/ w' t) U! M+ B0 \4 ]) ^" J: Ilet j 3" D# s' q9 Z* c/ f5 l/ w, h
let k 4
. o1 D4 P5 G5 @; ^0 f$ U( wwhile[j < trade-record-one-len]9 `$ Y$ _7 R% {2 ~
[
: K: D+ S$ I8 d6 V9 Rwhile [((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
$ ^7 W5 k: R' b6 bset 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)
- H9 c$ j  @: gset j; y; C8 f* w; Q6 c8 e$ m
( j + 1)
6 I; J( z/ w' x: Y/ f) m* l. z
]
* k. I! }" Y/ m' iset [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 ))7 k7 E& ]9 I; m# q3 n  j
2 x/ X& u" D1 W! I) U

) X) t4 ^9 J) r0 m! O' ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% k" _# D7 a4 f% y* Z
;;
及时更新il的评价质量的评价$ @; y% n5 y2 [8 O/ I% _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ j! P2 M4 Y7 ?; ~
set l (l + 1)2 |, S7 \8 v; G3 d" ]
]
' h4 ]) C. Y, Y9 a, tend& B$ a7 ~& V- Y6 o" y

, w3 R" u) o# g& Nto update-credibility-list
4 i# R. \/ y6 e5 \3 clet i 0
8 I0 o: K  s6 V2 t( g/ }while[i < people]
* o2 L% Q3 e( W3 _+ q: z[0 @& x" k& h1 F3 T1 f% R" x
let j 05 `  J7 @" K* K! h, f; m2 c4 E
let note 04 o0 m" f1 A) i" O+ p6 t
let k 06 {* b4 L7 B/ }' m
;;
计作出过评价的邻居节点的数目, y7 q0 r+ x; f* r& N7 j, V
while[j < people]
5 y/ p6 [- u' y) l; a% j4 f& \& g[
9 t5 `  N  X$ B' oif (item j( [credibility] of turtle (i + 1)) != -1)
5 \8 n5 d- P; H$ n# P;;
判断是否给本turtle的评价质量做出过评价的节点
0 Y' t7 a" K  M1 I' J5 H[set note (note + item j ([credibility]of turtle (i + 1)))6 s- [2 L! b& Z
;;*(exp (-(people - 2)))/(people - 2))]

7 z/ c5 N  Y  W9 `set k (k + 1)
* _7 }* ?: D8 k]4 \. U6 U2 B9 ?! j9 i, `. d
set j (j + 1)) f. x) r+ t0 C. g( N
]
/ D0 G" K) A/ Yset note (note *(exp (- (1 / k)))/ k)2 d8 b! ?+ ^2 ~. i
set credibility-list (replace-item i credibility-list note)
0 h4 O5 U5 Z; w0 h2 ]set i (i + 1)3 x5 N0 k& \. S. i3 h
]8 U/ J6 Y; N5 G# _$ M
end
& y0 ^# w! l, l* z0 e; |7 E
3 ]' f# K( x( Kto update-global-reputation-list
" ^+ C3 h! q9 x$ i3 _0 h: ~( v. L: b  ulet j 0- i3 z0 J: S5 r% t$ j
while[j < people]/ I  A; b7 k" `# }( g% h
[. l! `8 T' a  [
let new 0) T! C1 R+ }+ X) k1 I# c: @* w
;;
暂存新的一个全局声誉
' k6 s' W; B  [7 V- B: C$ ^# Plet i 0
  X4 v6 f' C% p2 I# ~7 T- Qlet sum-money 07 f7 I& ^6 }+ b: R
let credibility-money 0" n/ V6 N+ Y# s- P% s6 ~
while [i < people]6 i& D3 @4 ~. J+ `# ~( v; d. |
[$ U* q/ v5 I' T! k5 G- C; X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ ~; u6 V  G, e& e1 v; @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; j: {5 u) W# t1 ?$ g) Rset i (i + 1)
+ `3 z2 P; y( I; P+ l]
1 x, d$ v3 s; a" s+ ulet k 0
$ _- n$ h) C! k1 Rlet new1 0: m; u  f. G) J* W! k" C
while [k < people]7 U; z* t9 h- l1 }
[
" g5 L% K$ L. \, K5 Zset 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)
! Y/ p6 V; i. m) D, b; A7 F  a2 Tset k (k + 1)% o! J, J3 u7 `( u: t/ U
]: N- F" ~+ g, {: b9 Q, e; N! {' w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# N0 r$ R+ `, e5 E+ y+ v5 o5 u* uset global-reputation-list (replace-item j global-reputation-list new)
! q9 D* [9 F- C2 x! x% jset j (j + 1)' E0 g( E1 t- u9 r! W
]
! y0 ^2 h6 K4 C% `1 Vend! e7 F$ L6 }3 X( f8 k$ o
' L7 r- {" M: f4 w

$ p# i* A) `  n2 b7 V
; ?7 |  Q$ C7 p% Sto get-color
2 O" X% h  V. x& I5 k: j4 L* |' h0 N, r  _$ V
set color blue
  |3 y9 J5 B' O) x% Z, Z
end# l" E. _" g0 t) k0 J

/ G/ @6 P2 F# X  v" ?: I6 Uto poll-class
" b  _2 D- K9 T4 h: G/ ~1 Vend
! S. t* ~5 m$ `0 M( Y0 ~3 O* u- ^/ A$ ?# W" m
to setup-plot1
8 i$ X; A! R- A& F) a6 e% ]" B/ X) g. A9 ?
set-current-plot "Trends-of-Local-reputation"
" w4 f) ^; D8 b( u

$ A$ U+ K3 R5 ]set-plot-x-range 0 xmax

! F7 G' k" _0 X) X* b7 f9 N- @; ?$ x. k. `6 U; y
set-plot-y-range 0.0 ymax
* ~: [% s% B0 r: K/ K! c
end
- n* O% V# `" x  u; Q- S4 h3 Y- B) y+ M9 B- j
to setup-plot2* N$ m" P/ e7 B& c8 K: l  u! e
$ T, A* F6 d! r' d8 T
set-current-plot "Trends-of-global-reputation"
- ~/ |$ }$ g- ]8 P% N' d

- O, g) N& ]& P; @set-plot-x-range 0 xmax

# v5 u5 [( S9 U( j& x4 k6 [# X; N4 r8 m# q! X) T6 O$ O2 T* b
set-plot-y-range 0.0 ymax
) X5 J. w: y" f( L2 b
end
( t- z- e3 J' m% ^* _
4 }9 M3 G8 K2 R) r! y5 v- p4 P( Wto setup-plot3
% T; X- E0 h2 v' b3 ?- f7 G9 t/ z7 O8 R" v3 p+ A4 _. }6 x
set-current-plot "Trends-of-credibility"

& \2 o6 q1 y" ?* e
' E9 F+ m+ `* k' N+ xset-plot-x-range 0 xmax

% U! j- F# `5 m) q$ m7 {" ?
. u# u" D+ k; Jset-plot-y-range 0.0 ymax

6 T/ S1 n7 {6 U/ s+ v9 l# A; {! G2 yend, J6 Q  c9 Z% T. Y* r+ ?6 \
& M; e4 U/ L& L
to do-plots7 y: P  j8 f. g
set-current-plot "Trends-of-Local-reputation"
' n$ @! O1 v$ |) F9 Q5 T4 [9 [set-current-plot-pen "Honest service"
  M- G3 W+ T1 S- N4 tend
, ~: F0 ^: X# f  s0 `8 V  S5 q+ \4 I2 ]: }) d3 \+ q
[ 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.
8 F0 `& Q  s0 M& H1 z7 o; T6 O# q, i# g8 P2 P, R
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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