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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:
4 w1 E$ |9 {' t( i* sto do-business 7 B5 G$ W6 d1 W( z: f5 {" i
rt random 360# ]6 A0 f9 I6 S% c" R
fd 1
% k3 q; I, `3 C! @- g0 t  O ifelse(other turtles-here != nobody)[
( P+ u: k( M0 t* A- T/ 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.! p) T0 ?& Q9 M- ?, T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ X8 R) @7 G- S* O. W  j: b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 }6 [6 H9 I' [# q  N& r
   set [trade-record-one-len] of self length [trade-record-one] of self
! p% p8 I6 q8 w: S+ s  O7 X- E9 q  b0 D   set trade-record-current( list (timer) (random money-upper-limit)): l" m% o! t, q2 S. u
0 I9 U* Z* B5 r7 T
问题的提示如下:2 E% I" w. J- a5 m# A
  c9 }( Y( ]5 F! s- G
error while turtle 50 running OF in procedure DO-BUSINESS) X' w8 W  r  ^2 t
  called by procedure GO2 g2 j" ~1 O: t5 z9 [# P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" H: i1 u$ x  Q. w! A
(halted running of go)
) T9 g& e5 J8 k% h* R, S' K2 [! W3 N9 m5 I6 d) t! R( {' F# k
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~~: Y* P$ V& }+ ~. `
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) ]6 |) `1 g* T* Q. R4 _6 q2 l
globals[
7 O2 w: U7 U; U' v7 {. p* ~xmax1 z& t2 e6 {) B( }. S3 \2 [
ymax
/ c+ [( a0 h6 {  {" x$ Q( uglobal-reputation-list
/ ~; s. F$ ~7 p' p: `+ B, K- O  z0 j" ]
;;
每一个turtle的全局声誉都存在此LIST
7 Y- g. b/ W8 W. t! F; \4 |credibility-list
; F* \' O3 m! b/ [; J;;
每一个turtle的评价可信度
) O) R$ ~0 r% zhonest-service
9 V0 k& k1 {4 j& w! N3 `unhonest-service
3 g" i% F! t. }oscillation
; T" X) p% g  qrand-dynamic
0 T9 {$ U8 B- P$ B# h]$ S+ k2 a, E: |5 t$ U

, {8 x& ~/ W4 Q* F0 m/ Y# lturtles-own[
! b. F2 ]  Q7 q) i8 Btrade-record-all
' d( E* S  @% I% i;;a list of lists,
trade-record-one组成
9 {1 [: |9 U  Z" S6 }& ?trade-record-one! M( c7 K! D0 \
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' Z4 H% X5 r3 c. `* i* @, J: V( E( A6 t; t( C2 z" j
;;[
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]]6 p. o0 K- l) S
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]) ]6 ~- A+ k$ J+ m( F
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list4 d  o) e/ E3 A" v* M0 [# K
neighbor-total6 D/ m8 i( }4 D; L& }
;;
记录该turtle的邻居节点的数目
. j' u. S6 u" k9 ]  Ptrade-time
1 W2 c, w. `  z% x' F4 C;;
当前发生交易的turtle的交易时间; I  g" W* \% p9 ^8 @9 A
appraise-give
5 X: N( N9 |. j, Z4 O0 t0 P;;
当前发生交易时给出的评价
  w# z( P" z$ W& e+ |/ Wappraise-receive
' X  v0 m: {: v  \;;
当前发生交易时收到的评价
( E! D9 k! d3 E" {! p. s- o1 Pappraise-time
. x6 Y' r  n+ I. [0 E, T% E7 K;;
当前发生交易时的评价时间- V( o7 ]8 h/ R( W7 H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 i" L& Y& X4 ~. v6 m8 d3 {trade-times-total
8 L: ]7 f6 X5 }$ A- i  b/ p( s5 T;;
与当前turtle的交易总次数+ D' t8 Z- A& d/ s) |
trade-money-total
" p2 Z( n2 n' D/ h1 U;;
与当前turtle的交易总金额7 O6 l* h8 y' G; z. a3 B: f
local-reputation5 J6 F) [9 v( L6 E) A& c
global-reputation
9 F2 m' ]4 ~" T' fcredibility( S" ?, [+ d; [6 u8 A; Y
;;
评价可信度,每次交易后都需要更新" `$ s9 p' y3 @
credibility-all! c+ Y. S3 Y$ q% M& ~9 J5 \: m
;;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 E8 r; j0 |1 R. ]- [: }3 ?
% S' i: w7 K9 }
;;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' j4 n* B: @. i2 G' t. @8 n
credibility-one) G, ]1 }( t9 v
;;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, V$ `: v0 e- T8 F$ K
global-proportion
- j/ I( H+ V; k2 _/ I) G9 X' Acustomer
4 V" ^# w# S" f) K3 ocustomer-no
: w8 m' D% k) `+ O9 vtrust-ok& f% y* O/ F* Z. H' ^6 J
trade-record-one-len;;trade-record-one的长度# u7 H- q& J4 r, D
]0 l5 t0 u/ s! \6 ?. |" x

- N& P+ J9 G! S& d;;setup procedure  a( F# [. w8 ^& x9 n* }7 k: y
9 Y' T& d) r6 o
to setup
" k$ ?2 p, }" p- G/ x, w6 p* F! s5 t# K* R
ca

, y2 `8 o/ q2 X" H) W6 _! q$ d! r4 y9 ]
initialize-settings

- d& a) V! L5 x4 F* e/ J1 ]" H/ T$ b' \4 o9 j. a8 R. J
crt people [setup-turtles]
. T2 J3 \  \  T. _+ V! Z
4 C% x; o* n1 m1 J9 ?7 a5 m
reset-timer

" i$ f2 R9 M3 Z) @. b" N3 x% \3 ]
5 C- Y# T3 s+ F$ }( Tpoll-class

, A1 d3 H9 @3 s) b/ B
- d7 m5 K8 Q- X% \! jsetup-plots
, b& o& c4 R4 O0 p
! h4 X9 @7 i1 W  i  @2 ~& R( D3 N
do-plots
- T# h3 T: g4 Q1 Q2 D
end
  I/ J! y" k( W* \6 X5 e) v' j5 p$ B
. D* Q! X% A  L$ R8 Zto initialize-settings
+ E( X( R$ S7 M& u2 e5 }: x8 F; w* K; y& m3 u6 C0 e' @
set global-reputation-list []
( L( Q0 `9 _8 p

4 U8 h- c- d' W; G0 m$ ?+ A! {set credibility-list n-values people [0.5]

$ z" u+ ^: c. k7 ^) J* r9 _0 W! ?/ ]; u4 w7 s
set honest-service 0
3 M; J1 q  |  M5 Q
* y/ S% I. A' n% O6 V+ n
set unhonest-service 0

  x0 N$ N: T/ l! A: S9 i
6 t. y* X+ }& Q5 Yset oscillation 0
  z( @2 s, O1 X, \7 ~
6 h& `6 m+ P+ J% P( d0 I- S" `
set rand-dynamic 0

7 J& b, y8 a" C# H2 a9 Bend
( l. y1 b6 p' p. g! R* a1 V- ?9 y- ^$ T. V
to setup-turtles
6 a! ~& b$ I0 P4 G6 gset shape "person"
+ u9 {/ `- F- O& A: h  F: _setxy random-xcor random-ycor
9 S  k1 Z" K" x: hset trade-record-one []
4 v, i- K8 h. p- L" z
0 B2 G; ?8 `, j. F
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 [3 G6 W) J9 m

( W( c. m/ w6 G6 Jset trade-record-current []
8 m" N# X1 z$ l' j6 p' gset credibility-receive []
8 D2 N: ]$ o* J$ I" s% wset local-reputation 0.5
9 Q* L9 f' I3 Z- {; uset neighbor-total 0
1 }4 S! _; _) gset trade-times-total 0( }5 C3 Z# t9 z
set trade-money-total 0# |6 }% ]# _) ^
set customer nobody
9 P5 S: s0 D: F8 }2 C9 zset credibility-all n-values people [creat-credibility]; L/ C" F" x" N4 Z
set credibility n-values people [-1]
  j2 w, z: a5 v! A$ hget-color
6 a2 o. g3 q/ D6 [' S) a$ I& @
; B0 r" g* ~5 X# S  ^  Q4 Z, ]
end
/ K0 e4 K! [; P: l2 ]3 D" Z) {: w/ i5 T! F
to-report creat-credibility+ Z4 g% a7 B6 A1 E, g
report n-values people [0.5]
% |" ?; m& F/ i* @1 |& d( E" vend
3 l$ t! A6 h& E. s& i
4 ]( {* @9 [( B0 O9 K% dto setup-plots- ]% }4 N6 ^% o8 k( {  n6 X4 W

/ |7 a2 j4 e- a- Bset xmax 30
1 V; O7 {( _5 y- ~2 d7 W
& i1 Z6 P; W, X; e. L
set ymax 1.0

; J: ]) ~! W* L; r8 s
3 l9 }; y1 e& A% T/ w2 j. H: }5 tclear-all-plots

' B9 g. Y0 O6 T; Q4 [
2 W# c( F9 s2 G9 _+ V) F$ K: a6 `setup-plot1
0 z( B# q3 W: E! P' b3 m* D

8 L" P% \, H2 C' F" b8 U- vsetup-plot2
# u9 K, N7 W% M5 \' W: ^/ t$ w
: c6 i5 o; n" ~! S4 [
setup-plot3
0 `% H& [0 [% @! w3 v/ j
end2 f1 a7 E0 Q+ ~

9 ^7 C# N0 ~5 G$ S0 o;;run time procedures+ l; H* ]: C, v' w; f% C# \# v

2 v# N- L( j* |! n6 U& M% Rto go7 k- {$ B/ H+ T6 M; x9 E

! B3 z4 K" M. a" j4 i  a8 |ask turtles [do-business]
7 q, v# V7 O8 Q) W& m
end  h0 d( @% K( `. \9 D
( M( Q) Z4 y# ^/ @4 x
to do-business 2 t* b( d/ X# R. o( P  u4 b
1 w2 p: c# ]3 l& h
8 ^% S- T% P% ~
rt random 360
1 E5 s  g# Y8 V

9 R$ h" N; u6 R8 R  P6 _fd 1
/ m4 G1 b4 y: x9 L! l
) k+ m5 a; `1 Q- y
ifelse(other turtles-here != nobody)[
4 @2 `9 t' A$ l7 R- @; ?

  l  ^  Y; T% hset customer one-of other turtles-here
' S7 n8 ]1 F" V2 O. m) s/ M! B
. {) p! k$ p# J/ _
;; set [customer] of customer myself

7 K( ^' t! F" _! D9 Q; j7 M& u' @2 N: _
set [trade-record-one] of self item (([who] of customer) - 1)
5 q5 a2 }* o3 ^9 n* \[trade-record-all]of self
/ W2 l" f# w" ?7 `% f3 K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 g0 u; r. x! m; e

4 G* W/ O1 g' E8 ?- mset [trade-record-one] of customer item (([who] of self) - 1)
" y. X( h6 I) }8 I  i+ r& [[trade-record-all]of customer

* O$ z) \  K& @
: g! X; I% {- D" Q; {6 Vset [trade-record-one-len] of self length [trade-record-one] of self
7 F0 D! L' K8 W  G+ _: K
7 a, ~' i2 _9 {* y# n8 z, B
set trade-record-current( list (timer) (random money-upper-limit))

( b7 _- @* k! Q2 J" j# m
" J7 W4 @9 c9 g# |% F- @/ c9 hask self [do-trust]% M5 h9 U& X! K" B% k$ K8 a& k
;;
先求ij的信任度/ D4 n2 m- ^9 d6 n& w# E& P
2 I/ k# S1 z8 U( H
if ([trust-ok] of self)
' `, q9 |2 u" m+ P. G* ?) H, D5 Y;;
根据ij的信任度来决定是否与j进行交易[2 U4 o- D( `5 }  b
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! b4 _: s3 E, S; R# D3 I0 b

" _+ U% M* q! g# G  U, @[
+ m" t3 k. F1 P4 t- ~5 Z

9 s8 ?+ \7 V  U' Q' z4 C, _do-trade

, d  I; O6 ?- O% K: Y; G9 W3 e
7 D. S4 M+ n4 r& a, _update-credibility-ijl
2 [! f7 a2 a/ r6 @7 y- N8 @) w$ E
3 p' @8 g* R# a
update-credibility-list! D! W3 D/ X. j! I, C3 }

- w& r5 E, m# p  o2 X# B9 J
( l5 n$ p- M' A( J) u$ K. w  W" hupdate-global-reputation-list
) |/ |# }/ R, c8 l

" r% j8 N) J' ]9 Y/ T/ F+ Wpoll-class
, V# r! S& p" l* I3 @: P  k" C7 G
! @1 Z; U& W- v/ k
get-color
; @( }9 Z) }7 e6 s; E
/ _' `( G8 m1 {, Z
]]
3 Y2 q' H9 n# r1 q2 e% g9 S% [4 I, [! i; s
;;
如果所得的信任度满足条件,则进行交易- A& Z! A; G) @1 W$ f
& n5 n$ Z# n/ _
[
5 S7 x% N, B2 G  x& k

* e- {! B% k4 ~  y/ vrt random 360
+ c7 c, K( X0 K% ^
- R- P2 @; a. J0 M; i1 U! K' K9 O1 ~
fd 1
9 c% k& ^. t% M/ }" e
) [1 S, a- K5 c& B4 J
]

5 L0 v" m( k/ o' q) ]& u# ~% Y! \7 l/ e- g
end
$ F" h/ m5 p9 Z$ P7 u. z
" Y+ z* o9 e# k
to do-trust
' F  Q) K) w7 _# o! E0 [' I" R5 d, Gset trust-ok False
4 R8 U) W, j  ^$ F, A) }% s2 d7 Q
0 p4 F. w0 N7 R/ i% Q
3 B- r9 E) Q" f4 j4 [3 x( O
let max-trade-times 0, J5 s. Z7 {# O8 Y* {: c& c2 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 f7 b' |9 W7 K
let max-trade-money 0
$ E) ^" s: Y; H* w/ Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ O# h. i$ D2 c( M& R2 z) }; tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). W1 h0 z: q( R, O

+ l& Y- p6 v* U9 }2 ~' z

; n) z! z# K: |2 D; E  F( eget-global-proportion
5 B# ~: h3 d+ R. T) C9 O! G8 |let trust-value2 _& O  J) e5 S
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)

) c) x6 _# b6 K; U- ]; _9 e7 K7 Iif(trust-value > trade-trust-value), m9 l+ Z. V7 f
[set trust-ok true]+ H5 u' E' j1 X/ L# ?2 P) e- W7 C1 z
end
) W% e$ s- e( C5 R( _! o# y# L
5 T" f( V/ N( N* J* Y( e% A8 U5 {to get-global-proportion
, p  B# a1 I( [& Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 l* i' k- `6 d' J( z  l
[set global-proportion 0]6 ]& i: M6 u. i+ W# c# t
[let i 0
8 ]$ E! m+ a- g# R$ e5 |' [" E: olet sum-money 0
" D+ e" M/ I. Z/ [+ `while[ i < people]4 N6 g; i# j& F$ m) j& |
[
; |+ z5 U# {! Uif( length (item i
3 w2 Q) M8 [* i$ G( T8 C, n# O[trade-record-all] of customer) > 3 )
6 [1 |! f- u5 }% `
[9 [1 i& I/ S7 k8 w- [6 C: c! l: ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ c3 |1 P; `( B& m! S]  `* q8 H8 U$ F+ g4 h
]
) q* P! G) M) V, |. Jlet j 07 c; ?( F( b2 t! I0 G+ R7 G
let note 09 Y" Y0 T( H4 b* c. M& c
while[ j < people]
% p( L5 y' y. ]  g+ T, ~; k+ r[- }% D; G& b# }% \0 q
if( length (item i1 G1 R5 T  [( `9 u
[trade-record-all] of customer) > 3 )
- L, f! H* S) O; {' h) l
[( a5 k; u+ U8 V
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 ^6 j  G) b: h& p7 t* a4 n& Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  Z6 Q. P% d4 I5 m$ B" G- s  F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ D" l, _. S: [4 E9 ^0 C  \; r7 C
]0 [( A1 p" L- m4 ?& i3 j5 s% r
]
% m  u3 R+ ?& Qset global-proportion note- ^2 k" M5 C8 t. t
]
7 v/ C0 u! K! pend
% ~0 K+ ^8 Q4 k) r$ t+ N: J1 c; r" x$ ?/ d* H
to do-trade( w6 x- `. j, O, B$ |/ j2 _
;;
这个过程实际上是给双方作出评价的过程- k% F  S9 c6 [* I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 }8 a) |% |9 l2 aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" Q1 r! l9 R# E/ ]
set trade-record-current lput(timer) trade-record-current: \- {" s. o2 W& i$ N" R
;;
评价时间
  p. j) h$ d& }( G9 i& y. V+ W" e+ Fask myself [
  ?, C8 {5 `, U# G$ @' b: g2 @& hupdate-local-reputation' |8 ^, y6 G% ~( M/ o) N& D
set trade-record-current lput([local-reputation] of myself) trade-record-current8 M8 o) Q% w$ t0 i
]
$ q! \* B: {% u" n# a* Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ j- r% o) G( K! r;;
将此次交易的记录加入到trade-record-one
+ C8 H& w2 Z& ?: T1 lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* z, v7 f9 ?5 P, Flet note (item 2 trade-record-current )
) m( e6 k8 p$ ^- Mset trade-record-current4 B% u% f* l' I8 B% K& V
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ R+ m* D5 Y8 l! m
set trade-record-current/ O- _2 p! t2 e$ I2 {. H
(replace-item 3 trade-record-current note)
1 P2 k# N  H9 k1 f0 G' X0 d" Q. K* \$ ]. f5 w3 I" u" g: h6 V$ [

# H* y- S5 }. h- h; {& C/ u: K% sask customer [
! \$ j% C  a4 s. B9 {update-local-reputation( B; n; C" b' z3 p) ?+ c3 M2 }3 m
set trade-record-current
6 c  F" U0 \7 ~/ N+ [$ [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  z( x  h' @( i' D
]' S0 M3 L8 s+ \2 A: w) H

$ O9 T' [" j2 C% N% D6 N
1 ^' l+ L- `# i' C/ c; D+ }% K: Q0 u+ l
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 i4 L6 T2 y* S, X

8 Q) i! C5 _; c# @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 s5 r' U4 H$ D' x  d. a2 `;;
将此次交易的记录加入到customertrade-record-all; H) w7 ~. I6 n+ Y: J' {
end
+ E6 x2 ?7 S% V2 l3 o  `3 U, k1 s  u* K( C& C, q5 e& I. b3 \
to update-local-reputation# k: T. ^0 l: G7 A& d
set [trade-record-one-len] of myself length [trade-record-one] of myself
. t4 ]4 j7 r1 h* c1 Z
7 i9 _6 m# p: [7 G5 z: k* Q
. k- G4 f/ a% \6 F7 ~# t5 \;;if [trade-record-one-len] of myself > 3
, x# ]; r7 I4 |  O
update-neighbor-total/ B7 G5 M' e4 S2 x+ e% K
;;
更新邻居节点的数目,在此进行
+ c9 n9 I! S! @  J0 ~$ Qlet i 3
6 ], y) N+ F: G: P* {8 l" a# @8 Ulet sum-time 00 C( o2 F; T. n. ^
while[i < [trade-record-one-len] of myself]6 Y. [7 W) x6 N! c& p, Q1 ^
[
; g8 C' X8 J: F4 `1 `3 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( ~& k, h& {0 jset i* {# R* C5 Y. Q2 e
( i + 1)

0 z" L1 d3 N7 i) {3 f# H) V8 D3 ~7 x. @]; e/ g; T. A* B* {. m
let j 3
9 W. A, M# t8 s: j9 }+ X. c8 Slet sum-money 0
# L. y6 ]' {- H2 ]$ Zwhile[j < [trade-record-one-len] of myself]
! i) B0 k* L; U[' O  ?' F: u/ j% L& G
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): \8 [$ N! }* r+ J3 F
set j5 f$ l% H' r' r
( j + 1)
1 a% m, j; @: _6 Y0 q
]6 Z" r1 U8 }! ~  O( ~2 |- n0 B
let k 3
' y9 G7 x8 Z. @) d. K" a* k8 n  Jlet power 0" |  b0 {/ u9 W' b( n
let local 0# K- S/ u0 C; x$ V$ r% t+ z9 [
while [k <[trade-record-one-len] of myself]
4 X4 j. f1 |, n" x[
0 V: d' R$ p5 K8 i9 w: y8 Mset 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) ( b9 q7 \' }  e
set k (k + 1)
5 W  F6 ?) ~7 w% A! j  R]
+ B8 x. ^, g$ _0 xset [local-reputation] of myself (local)
" p" X$ G! ?' Send
$ ?( T% V) K9 x/ Q! Q, L  l) x3 ^% q) ]+ x8 \: Y7 b
to update-neighbor-total& e4 Z* }5 P0 [5 {" q
! L2 z2 l) p! Z$ ]1 M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 O9 L+ |* x3 [3 q4 }5 U/ {) @. u
# `+ [- B1 X$ C3 `1 u7 {. l
9 i0 {8 x( G' `, v0 W
end
7 E' ^* ^, \( e9 t5 ]  _( \' a+ ^. d$ w
to update-credibility-ijl
9 K" E- i* F; B/ @0 l8 X
/ e: N* M) I5 R! a) _;;
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。+ Z- D0 y4 [; b% T7 Y
let l 0
+ A7 v- }. ?  J" _while[ l < people ]8 |7 |3 d; [# X) O- c0 X
;;
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
" c. t/ G7 z7 ^4 F+ y3 Z$ S[- s6 Y, x) r/ W/ {  a6 Z" @
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 X9 D$ H8 r! Wif (trade-record-one-j-l-len > 3)
. |9 m9 G% D. S* g$ L+ U1 }7 |+ X[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
4 s2 [% N! B' D0 Qlet i 3( B( E5 w1 T3 _2 Y! z8 r  j
let sum-time 0- p1 C+ r! J" t/ }1 D
while[i < trade-record-one-len]$ o3 C+ v4 a! S0 W
[: `. i1 {4 C6 n5 K  c; [
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ C) P( r9 O2 F3 p6 G1 i0 e% @set i
! N. @9 v7 R% e% l2 w* M8 V( i + 1)

& m, P* {3 ~# x  v2 h+ S! ]  z1 j& F]! {: t) n: H) D. K. G6 V; J
let credibility-i-j-l 0
( B3 O% W/ U" I/ s" c4 j! ^5 c;;i
评价(jjl的评价)
7 d1 {# W/ Z8 I3 Llet j 3. S$ }( x  R, Q" \( E( x
let k 49 j6 @* F# h' c% J# o
while[j < trade-record-one-len]2 T( K8 h# F' y* z; Z, d
[
' o* t( D0 ~  bwhile [((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9 k7 s0 r' |7 k4 l% V! F7 M
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)
! A$ H5 m9 I3 P( p9 a/ h1 V: Pset j
' K- E/ j9 c5 n7 z# r2 b( j + 1)

/ n3 v, ~" Q1 Z]
/ f5 O: y0 e/ k! [& P" u4 ]! O6 R& sset [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 ))
4 j5 U3 a! X2 t6 i7 O; e1 O5 h9 w1 O& [

) S. z1 B, M1 _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" r# C( \4 Y3 m! d
;;
及时更新il的评价质量的评价
$ b. [. e1 q$ q2 u9 Qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% n* t! |9 y, W  d! S
set l (l + 1)# @/ r' v" b( F3 @  M
]. s! l! f) s: _& Q3 s) B4 Z8 F
end
, c+ J$ u5 x+ U; J1 ~' X: _! g, [) q6 s
to update-credibility-list0 U  o: \; F! C8 t( T7 n( K) }/ \# A
let i 0
4 i, V4 D' Y; N" J- Y0 Kwhile[i < people]3 F2 \) r' i9 z) T& p9 t8 ^
[% |, V8 `+ q2 Z. M2 n
let j 0# F' d* X: m2 _  o7 {: B
let note 0
4 J& ]: Z1 _" e5 jlet k 0
) {, R! h/ R7 `: l! _5 C# T2 o% B;;
计作出过评价的邻居节点的数目6 R1 P3 z4 P) X/ p, s/ q) y
while[j < people]
. n. Z6 v( A* q( c' a* }[* \) k7 }0 w; l- f/ M
if (item j( [credibility] of turtle (i + 1)) != -1)' @% r  u% o) J1 H( G; A8 h
;;
判断是否给本turtle的评价质量做出过评价的节点
7 \/ Z5 D& s6 o3 X% j  [[set note (note + item j ([credibility]of turtle (i + 1)))4 E/ i8 V) q( F* R
;;*(exp (-(people - 2)))/(people - 2))]
# x( y  Z! U, i) C! r% H3 N
set k (k + 1)
% X8 E8 A# P/ e& j]6 K) F1 ]+ A0 R
set j (j + 1)4 n* F3 v9 B- X' }
]3 y$ }' i9 c* q3 x+ T1 n( ?3 s
set note (note *(exp (- (1 / k)))/ k)
6 e3 X/ t' x0 i2 G+ u( a% yset credibility-list (replace-item i credibility-list note)+ m0 E- m( r# ?7 A/ v) ^+ ^# Q
set i (i + 1)
) e& g  q- P7 B8 l( N$ `]
  k, s6 i  t2 `/ ^. L2 Wend* c' B, \* I' q9 u# K2 E

7 }- d" R8 r3 Y8 V; J1 Cto update-global-reputation-list3 [+ Q. C5 T: D, J. u
let j 0
0 w# t$ |3 a; |7 K2 B* _while[j < people]8 T4 _" v$ A! D) @2 L& O0 Q0 W8 M0 G; I
[
, {* e! k: [( g3 J& Alet new 05 e$ d; G# j, [1 f8 E
;;
暂存新的一个全局声誉
0 c, I$ E- [5 y2 B5 H! i) ?9 R! |let i 0# q0 F9 B9 D& w0 |
let sum-money 09 f5 }3 q. z# Z+ ]
let credibility-money 0
0 D9 H0 [- s7 p" \7 [# X% N' O# mwhile [i < people]
! [/ \' o" ^& K+ M1 v7 B2 c# u5 [[
: C$ |& }# U" M9 \9 S4 w" p3 m0 v3 Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" b- D. ?& ?) c, w. @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). h. w& A* [0 @9 ~- K1 s
set i (i + 1)
0 q5 U2 G2 U5 Y3 O0 I]2 g. q5 v9 s5 _' S1 [; a2 y, G) Q3 A
let k 0
' l. }, Z! t0 ~8 P) F6 [let new1 0, r$ h) ?9 K3 d* P
while [k < people]! e2 X" o+ i) H; D4 [, B# ?
[! g- p4 A  j- `* V- w& }/ N
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)
2 c5 H- d* J2 {+ y5 _3 Uset k (k + 1)5 I  U/ y% T' |+ T: A2 `- D$ g7 Q+ K
]; H! ]% B  a" V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# b9 w; Z0 A7 E0 Cset global-reputation-list (replace-item j global-reputation-list new)
1 R5 ^: U6 ?3 ~- J2 B+ M- b4 G. ^set j (j + 1)
8 I. w$ R' j! i4 o]
. w- j' j* i$ ?+ r. tend
1 K3 H4 l& _/ G  Z2 I0 F) ?. ?: J, C/ @1 j' q) X! P, Z
2 ?, z7 h8 g; |' ^' k
8 F" J$ L( a" A) K$ U
to get-color! F1 S* E" E4 _+ \* k

" `& [, l7 x+ c4 K4 R2 Yset color blue

% P9 }3 \7 _/ w, \, U+ Jend7 e( m. H3 K6 b  P2 Y7 p3 Z, t6 d5 v6 e
; \" h% p; J$ \# D  L  N0 z7 b
to poll-class! h: E4 L* Q0 u# r
end% X! e$ q6 v: |$ G: Z8 O; {

6 i5 F. N) i& \! K1 lto setup-plot1
5 t8 p! V: d( O$ |
+ Z5 X% t+ X" U6 K/ i/ z: iset-current-plot "Trends-of-Local-reputation"
6 ?; f9 ^- X% b' F0 T

5 t9 t0 m6 ?8 p8 A! `( [set-plot-x-range 0 xmax

( g2 @9 W6 u! D6 ~; d' P" s+ X( u3 @2 _
set-plot-y-range 0.0 ymax
2 O, s- k- a% A7 |/ X% ^
end. @3 w" _- ^( K( ^  @8 s8 l$ @
2 M4 O" {0 P" A; r7 d% ^& s
to setup-plot2$ O& J: x% v0 D  b0 |$ y, a: S
+ H  l6 C9 b! f; n8 F) `4 }7 b1 C
set-current-plot "Trends-of-global-reputation"

. H# y4 l) [1 r3 s- `0 T0 ?, X+ W$ `  \1 Z" ]9 ^; ?
set-plot-x-range 0 xmax

. R4 J. W( e8 X% O4 {+ R6 i- m- G3 ?+ G+ ]7 e( l8 D
set-plot-y-range 0.0 ymax

# a% z/ `2 m8 i7 V) \end! Y1 g3 ]1 b4 u# K$ H8 e
8 \- u2 R. M" m' F: U9 E- @3 v
to setup-plot3
" ~7 `; Z7 @2 n2 z: u" @8 H7 J4 n/ e# f, c- v* Y+ \' U- _' L. ^6 l$ `
set-current-plot "Trends-of-credibility"
/ x/ C; \8 E3 {5 L7 P3 {* T
: \5 ^% t0 o% G1 ?
set-plot-x-range 0 xmax
+ Q* A# p+ T7 l7 H

  A. y0 g+ P2 e% l! Iset-plot-y-range 0.0 ymax

" y# |0 d# L7 q3 Dend, i* R. V; p  P7 `( d' ]
1 u2 \1 n& S3 ?+ a' z5 F( v0 I0 S) J
to do-plots$ b. a! G9 P; D' @6 h
set-current-plot "Trends-of-Local-reputation"
( y: t. O, ~. m1 O  nset-current-plot-pen "Honest service"0 _* I- j, M: e5 |: S' R# l
end
1 U( d  A- m- V, [: ?( F3 w
9 g9 k( Z' a: z0 h* K, x6 H) 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.
: O% H& {& _; c+ t" Q
$ o; Z) v* x6 @( u* Q4 G7 R; W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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