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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:
) J) a; {) L, S3 n/ c% z% `2 Rto do-business
# ^$ u- C" Y' j# u# \3 L# t rt random 360
& @. k4 a1 H) G: Y* K- z$ Y fd 1
1 @! M. {/ y0 \( N% C8 B1 D ifelse(other turtles-here != nobody)[
3 I) p3 d; G6 W/ `( E( Q6 Y   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.
/ Z# S: M! s- J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 ?9 L1 s/ O7 f* H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 t$ x  i8 x, ]8 z* ^2 h' A% u   set [trade-record-one-len] of self length [trade-record-one] of self
- v) r+ q% d; p7 c6 A" [1 K5 N   set trade-record-current( list (timer) (random money-upper-limit))4 j. p2 p0 Q$ Y7 K, Q; I

' z# W7 t" X7 B. x3 M# V问题的提示如下:
. \. [& }0 v9 N" I- n' M9 Q5 J. v3 E, t# t5 ]: C
error while turtle 50 running OF in procedure DO-BUSINESS& g/ G. G. B* s0 C, f1 ?
  called by procedure GO; B2 X4 D" `6 E5 G  [+ R' x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 N( R' A# m4 d0 S
(halted running of go)- d% M) ^! V5 U, Q  v
% }/ V( t/ e9 ~- m
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~~
8 {- ?, s. a) f: a0 p& 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4 ?: K- D) E) e
globals[4 O; A* w5 R3 ?2 a. C2 E$ v
xmax
3 q* i, G) \- I; Nymax2 b4 x7 q$ A0 {0 w6 f7 ?/ ~
global-reputation-list) e. \8 Y5 y' _

9 a" w# L+ N  C9 g' o8 I0 w;;
每一个turtle的全局声誉都存在此LIST
) @" ?8 O6 l- l( y+ Tcredibility-list
6 B3 g' t" s) p" F9 J+ M' t3 b7 M;;
每一个turtle的评价可信度$ P  t# m3 G4 z; B2 A6 {/ v
honest-service! K6 y4 ~2 u; P+ ]; g
unhonest-service
6 E+ r  l7 @) N5 {oscillation' \% d7 P2 L) P7 H# a
rand-dynamic) r: L9 X( k- ^2 O* |- r' U1 l
]
* z0 f" F, K! y% G' W8 T% T) N
. ^* W: O; o2 ~$ ~turtles-own[6 A: W* K' o( V0 r# C, r: n& p
trade-record-all
2 o' W: f' @" M- C4 R  S;;a list of lists,
trade-record-one组成
, ~+ \' E0 d/ ], k/ Btrade-record-one* l9 r, ^# [1 ?( u$ Z. V, U4 g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 B; }7 H4 N, x! u
+ M& A2 |3 u0 T: M: l6 E
;;[
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]]
4 q3 O0 u3 E- Rtrade-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]
: w" }. Q6 Z1 }3 c  l" e! P! xcredibility-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
: T& L8 x' g+ V( oneighbor-total
# o- A9 X0 r6 C$ f4 Z;;
记录该turtle的邻居节点的数目
# Y5 }6 B1 T) m: W4 Ytrade-time
0 ?. [* o6 X" h3 O; T$ f;;
当前发生交易的turtle的交易时间* C. Y/ F/ e: r2 U5 g3 ?* z
appraise-give  s+ ]0 u1 g/ Z  ^' b
;;
当前发生交易时给出的评价
3 p! a: g2 {0 x; S' \- dappraise-receive
0 m  n0 j3 u7 Q7 v;;
当前发生交易时收到的评价
3 U- I$ s" A5 s3 g5 d! |2 W- tappraise-time( t2 |; A) z6 m' Q# S1 b  v
;;
当前发生交易时的评价时间$ R( N# u' R( m& E7 U* U+ y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉# a6 r% `+ C+ m/ N
trade-times-total: C  x& I4 o4 u$ C
;;
与当前turtle的交易总次数
- P1 x& w1 N) x, |trade-money-total
* r- L: ~1 F9 e9 |- l1 C& v;;
与当前turtle的交易总金额. R5 i5 S$ J3 g* Y4 |1 h
local-reputation4 v! U. j3 |% `( G3 C9 E: F
global-reputation
0 {' y7 T' T% P2 U8 Rcredibility1 x( e8 c" s# m1 A; L( z
;;
评价可信度,每次交易后都需要更新
! C$ C& W* z3 i, Gcredibility-all7 e  C- [) F5 z2 K& R  |
;;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( z+ G4 F5 i7 a4 }' |

) v1 V* N; Z3 ~3 _0 P1 U1 ?;;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  _2 f' I! Q* m2 ]  [
credibility-one
1 J: q4 _4 ]6 |8 S; A;;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
$ h0 r4 ?0 _& ^1 Y8 uglobal-proportion
' Z( T4 ?0 q, I" F; bcustomer
$ R, k% P9 p1 W! K% f( ccustomer-no- j8 e. ~1 u: \0 P* D
trust-ok; X0 x0 y8 S! N) l3 w! N- o! l
trade-record-one-len;;trade-record-one的长度
. J. W5 V0 z! h]) I8 p0 d' H; ~7 p

- u' O( I9 `0 x4 ^! L& ^;;setup procedure+ P* u& a( M* u6 N

/ L& k9 D, W" w6 M0 Rto setup- z' H& N. }; Y/ h- ~, o3 k/ G2 ~
9 j$ [; O' j' |# N5 n9 N6 A5 ?
ca
3 {% O5 Z: [7 K; Q1 m
2 I3 a; E- k( Y1 L* t% s
initialize-settings

' b7 m, ~0 J( E6 d5 T/ n. t2 x+ _9 c+ |7 K
crt people [setup-turtles]

  x. h; e2 ?) v5 S1 V
5 w) E. e3 z7 R1 Breset-timer
& K6 P; A; }9 c) k+ t2 B; F

/ o4 I% A2 [. kpoll-class

* e& F8 j7 e5 {) Q6 }* |9 p1 r
2 T. i6 n. L/ @& ^9 |- P4 Jsetup-plots
* Z; H  ^$ s& f5 l4 E* I* ?
  ~1 N4 [3 R7 \# O7 M" c- p
do-plots
: a/ l- ?- ?6 N7 F3 H1 S
end
( L& d; b/ J2 A/ h; |) \2 Y. ~5 I, g, \4 Z1 I
to initialize-settings8 ~& M& d: Y, O* s, q8 ?; s
4 J- \) I7 X" I0 k! t* U: Y( z0 {
set global-reputation-list []

, |3 Q1 _! k/ \$ F
% M+ J# f: y9 V+ C7 Lset credibility-list n-values people [0.5]
  M6 w9 H$ Z! T! |
4 v- _9 `! q( t
set honest-service 0

4 H4 b/ [: U2 h: l, N2 R3 d" s" W; h5 v8 Y! L- ]' G- m
set unhonest-service 0

6 m8 @) o1 m; r. p& I0 O% [
% M3 J# L* S& x+ \set oscillation 0

2 f6 x% ^. u4 T. t5 t2 ], {0 l
% z& d1 J9 Z. M6 h* yset rand-dynamic 0
* ]2 {7 |( ]" ]4 K0 z
end
* z! \& q  Q) P! v: f! {7 k) W
& C+ A! r  f% X7 l' L* Lto setup-turtles * x0 X! l! o; `, ?& h" f  }
set shape "person"
; z) _  Z, k8 R( x! A# g/ F$ Ysetxy random-xcor random-ycor
' K" ]$ Y; G4 q* V5 [! iset trade-record-one []" @/ L6 V* f& x# @' p, Z- b- l% N
7 |- N% L& _- `/ F1 _+ Y
set trade-record-all n-values people [(list (? + 1) 0 0)] ( n- I; m# F+ M1 L$ Z

9 v. P- Z" s9 v) a6 pset trade-record-current []
9 M+ }: T& T. x( w& q' E" q. vset credibility-receive []: T/ J  ?1 n, M7 N: x- f+ u
set local-reputation 0.5# O9 E- d2 @& Z7 v4 R  x2 C
set neighbor-total 0
% E( K7 e: O! c5 \set trade-times-total 0
3 u  k$ E6 M; cset trade-money-total 0
% I5 T3 c# }7 b6 _1 O- p' cset customer nobody
7 c5 j/ g, W- e& ^9 Y; s+ A) dset credibility-all n-values people [creat-credibility]
5 Z& }$ O3 W7 a: n4 pset credibility n-values people [-1]
0 j( l4 j- {8 H0 U9 |4 l. c6 Hget-color+ |$ r. ]" w# j4 c9 F7 T  K
0 a8 n+ I- \& L
end
% v' N& a% E' u- b# U
' B0 L, F. j, w3 mto-report creat-credibility
: H1 H" O4 E/ F" l- c6 H+ Dreport n-values people [0.5]' X- K+ _$ p( m% Z' J+ \: T  U1 D
end
9 }+ z  }7 |7 V1 K1 o, o; q2 L  |$ I. ?3 V8 K! p
to setup-plots2 R/ d( w7 i* E; b

9 p+ f. M* C6 `set xmax 30

4 c% d8 K% O( q0 R" ]
! z0 f- @. j. [+ Kset ymax 1.0

; f2 r1 `" i" P; D  Q
- ^7 P# C3 B5 R  w( M' v& ^clear-all-plots
) P* B  X; R% s; d

& d' n9 `1 S9 l+ B* Jsetup-plot1
' y  E( q2 w+ Z0 L9 ^' L6 S
& [6 m! b$ F8 g% |0 m  B( F  Q
setup-plot2
4 H- S+ D) o$ J+ c! Z- [

5 O8 S: L: n" |! X- A; Y3 ssetup-plot3

( H1 i3 n* E7 B8 bend
6 D) B* W" ^: i6 K4 ]- Z8 a( M7 `. t4 g2 h0 Z% h
;;run time procedures- [$ S0 Y) @: E) h0 [
/ r' y; J: H3 z. g0 r/ k
to go+ B+ C5 j/ U9 ^' h4 k, l+ `
5 C; n+ C: s3 o2 J9 }7 D  Q
ask turtles [do-business]
/ i# N$ x5 P9 c( j4 q
end% c, S2 W- X7 c7 ~  X/ A9 R9 r
- M6 S' d( p! S2 v, C  S
to do-business
* S. p9 T7 E* S3 |( w8 ^) z

8 w$ a; i8 }" o' K0 h* l5 I$ S3 f) A1 s2 q% W
rt random 360
) j( p0 X, ?7 n4 k- {( h
, }3 @- [2 s2 T: T; I! n/ R
fd 1

5 g& U0 ]* i' j. h: W! e; r( r# b
ifelse(other turtles-here != nobody)[

8 I! z2 r3 ^5 H; l& G0 X- ^( {6 y! b: X* k* C8 W
set customer one-of other turtles-here
+ p8 g% }) W! u1 g" j' A
1 ^( d( v1 P/ }" X5 g" p3 r# n/ ^$ L
;; set [customer] of customer myself
  e1 s% X% s. R5 {) t. E
6 {7 T8 |/ k* [
set [trade-record-one] of self item (([who] of customer) - 1)
+ F, C; T" X& D* Y+ j4 X[trade-record-all]of self, a- z& p- r) ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 z, z2 Y) P5 ]+ e! `0 L/ d& n1 m1 H( L/ |" V7 B
set [trade-record-one] of customer item (([who] of self) - 1)
* p8 _0 I; @- y4 z) |* V# l8 J[trade-record-all]of customer
6 H3 P; q* s; L! z6 g
6 j( i7 W/ z" W0 a
set [trade-record-one-len] of self length [trade-record-one] of self
3 w0 c, n* V3 t( |9 j) D

' \( U: b! A& ?4 u0 j$ l- Wset trade-record-current( list (timer) (random money-upper-limit))

0 U, X- T: O6 ?! f. ?
' P/ g0 Z  z+ k; t. \  Yask self [do-trust]
# c- _: o2 g5 ?. C# s;;
先求ij的信任度
5 k! q* b- a/ B) p& B6 v. ?# e8 m
if ([trust-ok] of self)
7 n/ i9 N4 y8 m# O( U; N;;
根据ij的信任度来决定是否与j进行交易[
) y/ S5 E9 x; ~  |7 Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! B) ?1 g' B* y* I3 h3 `2 [5 t. u# C; k- i. _
[
  F" f) z6 m6 @3 Q) }" l) o
- f$ n0 ^; U. a( {' v! H
do-trade
5 u) X$ F, {1 s( Q
, W7 V+ G  C4 j5 ]8 ^# T
update-credibility-ijl
2 M" u0 W# i: u
, y; O8 Y) ]8 f( z1 ~
update-credibility-list4 T7 S9 `$ x& S( d+ S

" n0 x) [% D0 k! ^+ P5 E8 J9 ^1 [; m# F0 D. e
update-global-reputation-list

9 z# F9 G. L; ?& A* E- p8 w. h/ }2 T0 B! A" \' Y
poll-class
- ]$ J, ^6 x# z3 c

1 W- e* ]1 b; r6 r! \8 S7 eget-color
$ i5 w0 y$ c2 b9 k1 |$ `4 l# w
& t5 N. @" p2 C
]]  b+ _* Q5 K; H. ^
6 X) p' ]2 G# J. c! _. H0 v, l
;;
如果所得的信任度满足条件,则进行交易' m9 b/ g; h! _

, M3 Z  b% ~8 s! P. g/ p& q2 ^[

! Z% t! Q6 b4 ]6 X5 i3 ?! U
( {4 z- ^% I) I# h6 b5 Urt random 360
* ?5 }+ y/ P- b9 S$ g) g: B( b( O
$ U. l/ r& r$ |& I' a) a- Z, H
fd 1
6 @6 X& I8 }: ?$ J+ [
! ?7 i! y! B/ N$ k6 |6 e
]

. [0 s7 R- o% F4 t, u6 C7 Z, R9 @2 h" T8 N6 e
end

* a. H0 o5 H& O7 P
! w! r- z: q. U3 e9 @0 ~8 Ato do-trust   J% _1 p$ B, V! a0 G0 [8 d$ J
set trust-ok False
( H) q8 K; ^' X9 d  o% T/ y9 F3 [9 {

; I# e& _4 O) @+ C. F& C% X9 t6 Ilet max-trade-times 0; t7 X& t% v: Y1 J% D4 A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. g3 [4 Z: l5 e# g. a; q- R
let max-trade-money 0
) Y, v$ v7 R/ A& r5 J3 F5 A0 fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* D& ?6 ]8 N* k' V2 x
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 {6 U0 p0 z' g$ H. o! u6 J- l4 p1 h5 o5 e/ i1 O) x% g% r" U4 h
. J- m' Z8 H/ g: V9 i* ]9 e
get-global-proportion' D( ]% {/ B$ O4 G: c
let trust-value( w7 ^, U- R7 C
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)

- o& z8 |! T8 U2 s7 [if(trust-value > trade-trust-value)
9 J, p" h$ I6 r  z2 _& u! c; e[set trust-ok true]. S* _" }0 I) u) B# N2 u
end. }# Z# ^0 }( F$ ?5 i/ q$ u
% [8 h" i9 z! U- r
to get-global-proportion
! B+ y# N4 Z& r2 ^) \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 C8 E+ B% n" S' L) J[set global-proportion 0]
4 _' ~5 N& q/ i/ ^, h[let i 0- p" n& \( A4 X) E; I
let sum-money 0
7 v; V$ I, X$ ]2 [' g: Cwhile[ i < people]% [5 [# y6 J& o* O8 d6 ^& C
[" n6 ?# N2 M" G! Z  {
if( length (item i" P4 A% u' V2 _1 T8 @7 z$ {& [# T
[trade-record-all] of customer) > 3 )
: P0 C# y8 c. N
[8 T" S: e6 _+ X* o9 h; _
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! z6 d) J' Y( ]8 _5 [' B
]
( e. [. p* U; O' \# u9 m0 A. K]
% v) h% H4 |9 _7 a! w2 Vlet j 08 K1 R$ S, @* k- V. n. `9 w6 u
let note 09 y9 c6 L2 W5 {( \
while[ j < people]
+ n/ c& M0 ^; P. \4 L+ f[% w+ F* V' m! c% f/ j: h; {& |: B. c
if( length (item i
! V7 J' o- y+ v# C' I1 X7 F[trade-record-all] of customer) > 3 )

$ }( q- \+ O2 T- g[
) `% O& D% I: Q! x) Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" _9 J, L* ^! n- M, ~) q0 v3 G$ D5 F  G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& W, R# y7 u: u! _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# u( p  X( U% ~' B: y; \  j$ A+ |
]4 T. y/ s" Y- y' W! t  g
]; `' f. ~( g9 s: }4 x) x
set global-proportion note
" J7 m/ m: i- Y6 \3 m]
3 D, K  G, ]4 P. ~. Q. [end
. u! c: X; ^& l2 p/ \% i7 c: C5 u2 A6 u
to do-trade  @0 }. p' ]* F/ @' W
;;
这个过程实际上是给双方作出评价的过程/ s' a# L" d3 U* B6 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 q! [/ T+ @$ s) |3 [( i3 P( Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" `& e" B) |$ D  p' L" k; C
set trade-record-current lput(timer) trade-record-current
6 r3 l1 _1 e) o$ s6 C2 t2 M8 k4 ?8 f; B;;
评价时间5 S8 \7 k5 d' H. R1 j8 p
ask myself [. K3 w: I; M& a0 R- l7 t) {' C3 x
update-local-reputation5 |1 ~8 y: s9 m3 `7 X
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 A$ w$ j8 d+ C& x# ~' Q]! A+ D9 F& X2 H0 R4 ?& P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& y) h- S5 N. T
;;
将此次交易的记录加入到trade-record-one
' w7 P0 S3 H8 eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( c8 q( ?0 c  S$ J
let note (item 2 trade-record-current )
' H  h( n# ~! e; h- @! u. Sset trade-record-current+ I+ {2 s0 o5 i' }5 R! O7 Y+ m9 ~: t
(replace-item 2 trade-record-current (item 3 trade-record-current))

  N/ e# [3 ~% x& J% }$ A/ ^set trade-record-current  j+ a. k8 H3 q
(replace-item 3 trade-record-current note)6 T* f1 Q/ z7 z
. r5 e3 W6 l7 H, I

+ ]# P( B) w9 D% C1 iask customer [
. M) ~6 J2 G9 wupdate-local-reputation
5 D% n- |. P; B! \. O9 J* ?  Y0 _set trade-record-current
7 Z8 w, M8 P# M( ^3 A  k5 r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, T9 H$ G& o' R$ _2 r
]
* e- w0 N- K( l& i2 {; e5 j- c0 H, ?4 A+ [5 o' R0 s5 g3 d9 e. s( w' l

0 A# D# u' Q( H4 eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 h! [0 I. v( W2 @! m( l
. B( H2 e) [  e9 J0 o3 l# {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ }: w2 e) W/ r/ X) l! j;;
将此次交易的记录加入到customertrade-record-all
$ j$ L. d7 v* n. t7 m9 v. |end
9 j3 D# Y& ]5 r8 A  b5 N' w' w) I: e
to update-local-reputation5 I  Q3 O7 ^" Q* Z  a  R+ f
set [trade-record-one-len] of myself length [trade-record-one] of myself
- w+ @3 D# J6 _" E+ H! e  E6 `, \) O& Y0 u3 e& S$ r

, M) h0 ?) p1 S& ^  q( _1 r;;if [trade-record-one-len] of myself > 3

- C2 D. w  w+ v6 C! i% Y+ dupdate-neighbor-total
! u- D' k% ^2 M& ~3 a' u;;
更新邻居节点的数目,在此进行
- L9 `6 u& z( c$ e9 G& @let i 3. E3 i; [% p' _/ `
let sum-time 0
" \( |5 x0 f$ ]# g+ Awhile[i < [trade-record-one-len] of myself]
: {" ]8 @, h7 ]& ~; k! D[
) w0 k7 ^' A# p7 ]. F$ dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 O4 \8 W9 B, V: U4 p( d  k( ?) C; c
set i$ U9 d: X+ q$ p  ^# y8 e
( i + 1)
# Z3 z4 U- }. K8 N" P3 W$ V
]
7 U4 T( w/ J/ ~8 A  x+ K. Qlet j 39 m  |& b* Q% E0 R- s' @9 v
let sum-money 0' Y7 ~* g6 Y) Z) x8 ^4 q, T6 U
while[j < [trade-record-one-len] of myself]2 j' _* q3 r% p( ~  u- [
[2 [7 b( Y7 W+ H
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)
) j0 v2 F! x3 \8 b( wset j# n' t' Y5 g/ D( O. M  Z
( j + 1)

  x$ X$ f9 B* Y: p7 [, f6 K]
4 {  Q7 Q2 `* }) Jlet k 3
: B% [, n# y- X. Wlet power 0
, }+ @7 r( x* Y$ o1 Slet local 0( B* A6 q" j& G$ Q
while [k <[trade-record-one-len] of myself]: j; g# A. S5 ^  K* f) i
[
$ o7 C8 U, Z! ^0 Dset 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)
: B5 A+ |) H/ t  Kset k (k + 1)
9 ]- \% D. \  t! p  H, C]2 b: I+ i) Q! [5 V. @5 W, a' s
set [local-reputation] of myself (local)9 L' R1 s2 d8 g0 S5 |( Q; W& M
end4 u1 q0 }( P+ Q0 w/ V9 ]) ^* e

9 t8 l1 Q6 E4 {3 wto update-neighbor-total
1 W2 b- m! |8 K1 F- [: `" U7 N. Z
: h: A* J6 }) \: pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ v; s  I( x: i& U& n9 E- H

, \, T% P: a/ k# m; T; n0 P

- U$ M. S7 Y$ `. O5 s2 G& Yend
- i/ N4 K: ?9 v. M3 l/ \  _8 q
: n, R8 ^/ @* Y& W, }to update-credibility-ijl + y$ D( F! c. X, X7 T# k
0 c. z" U2 d" F6 E% x- l, v
;;
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。
/ _7 \! P6 \  G0 E5 s) Rlet l 0
& p5 U  }& x" q" M* e5 bwhile[ l < people ]
3 m4 O+ K, u2 T;;
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
: ?7 k$ B( d* C- a: u; ^3 b[
5 e6 ^0 `+ J6 l5 l+ elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) f+ G9 m+ G- i! s; |0 F+ ?
if (trade-record-one-j-l-len > 3)
: }; o) B3 ]( T$ e, 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-one$ H( _* k& U) E4 ~$ i
let i 3' S3 }  N. i9 R: t( K! R
let sum-time 0" \* c. j; \" E  M5 J
while[i < trade-record-one-len]
" s5 k% w- R1 h[6 m# `$ d* s& R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- v2 y8 w/ F/ R- n) G; }1 o- [6 x+ ~set i+ e. Q% o6 f( u1 @1 _5 @8 s
( i + 1)

( R  A6 j5 l0 I+ D8 B7 R]
+ W$ y$ j7 b* }! e. D' N& Nlet credibility-i-j-l 0
! ^) l+ ^: n3 R% V" v# @" {;;i
评价(jjl的评价)
4 j: H6 ?5 e" N0 Z! W. I! Tlet j 3! Q6 Y* Q, V0 Z  M) Y
let k 46 j0 q, x, V9 n4 ^$ d( Z# |
while[j < trade-record-one-len]
6 i9 S3 }% \. u  l7 r[
& Y& i) }+ M- I- M! G# 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- [/ ~1 |  P* K& ]" b( t; g; i
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)
# t& F) q7 V2 x4 A' a9 }set j0 j1 Y6 t1 C) y' O0 I2 R  v# d
( j + 1)

- S* h3 N6 k! Z/ N4 d2 n& Y2 m]* a. l. B7 g6 R, z) V' e1 q5 V4 }
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 ))
6 z1 }% ]  i5 K) t" C6 N
; y' l. @% W$ ?* k( S
4 w9 a% t- u" Q. w, U" A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' O" y+ Y3 ?2 P' S" a- n9 G' w
;;
及时更新il的评价质量的评价
3 r, R+ g5 j& X5 D4 ^2 [8 l: |: U& hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* g& u4 @  X* A: k, K3 n/ G; Oset l (l + 1), H5 L/ [. B/ q3 S9 n: G# t
]
! @3 A: \% |6 i$ {- N# uend
3 c4 E. K  X" P3 \$ ~
7 \- v' S) x6 w) g2 N* J, ]to update-credibility-list) K2 _( e6 F- B
let i 04 F( j7 s9 w5 u+ ?; d6 Q
while[i < people]6 n% E  I! f! K1 d- t  V2 d+ a. _
[% o3 F5 j( c3 i  A, J3 P: T/ u. |
let j 00 L* C, S2 D. {# @& @
let note 0, \+ B1 W: ]4 P) L, s
let k 02 E/ v- b% k$ m
;;
计作出过评价的邻居节点的数目& o) P+ O6 b: s+ h! I
while[j < people]: ~% K9 j: ^2 P1 f+ K
[0 S1 z' ?# f& l4 d5 |( ~
if (item j( [credibility] of turtle (i + 1)) != -1)4 N" y: V0 e8 {5 G( I
;;
判断是否给本turtle的评价质量做出过评价的节点
: G) p- a8 [& c  w[set note (note + item j ([credibility]of turtle (i + 1)))
- J: u5 Q4 a; w$ I0 O* }4 h. o  L+ _;;*(exp (-(people - 2)))/(people - 2))]
8 e7 k* c% H8 V, {' [& k8 i" C
set k (k + 1)3 ^" N0 [/ r6 t4 x# |
]
1 R: x9 N0 l4 X% N+ Y' ?- Zset j (j + 1)6 E9 z; W% M' |- S( Z. L, |0 p
]- S% P! \$ @. c7 I
set note (note *(exp (- (1 / k)))/ k)
+ A) `6 ]. S- H4 Rset credibility-list (replace-item i credibility-list note)
7 ~" M; ^$ @/ }; a6 `& lset i (i + 1)
3 a5 e- {, o" ^, X]
) p6 C2 q2 C- u+ {/ ^/ i* Zend. @& D9 G/ B2 `# I9 F' v

& U: [0 ]- f% t( J5 v- n: _to update-global-reputation-list
$ v' F7 F, [8 e/ N2 Mlet j 0
  Q7 @8 s; M0 n: L  M2 U$ y3 {3 @while[j < people]
, p. y6 _' x" ?3 l9 b[# ?% Q' @5 E& j
let new 0  a+ O4 q: u! y; r" r" K
;;
暂存新的一个全局声誉3 [8 A3 J! q6 x8 M
let i 0. T* p6 X/ k; P
let sum-money 0$ o4 T3 l/ y! Z/ {3 F) l6 O
let credibility-money 0& |; B4 }0 {' t
while [i < people]$ Y( X6 T  b, ^6 \1 B
[( Y! Y  R; I# G2 _. q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ E8 \. `% X, ~3 mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). b6 w4 Q" A  r! ?2 _) \3 T
set i (i + 1)
0 n: d2 X, r( m0 {( n8 w6 }. o]
  ~/ u% N4 T: `: T$ |let k 0& @2 J# q1 n5 l4 ^8 O/ _* ]
let new1 0
2 m* n' |2 b( K, _: Uwhile [k < people]
* |& l4 A. O8 J9 N, W[
5 k6 r# a3 j/ V2 f" \% d/ Pset 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)
- @7 L* j/ S4 G& qset k (k + 1)
5 B' m3 u2 t$ C: u! o$ U' U+ ?( x- Y( i]
+ p# ]* g- T, Y; ^9 iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: I% {5 V/ f# A& N! yset global-reputation-list (replace-item j global-reputation-list new)
/ y1 L3 P; z! Iset j (j + 1)* K* B  H1 |) s% S8 i! E) B# r# A
]
1 A) i9 R' B8 Rend, R$ [3 o  c. j8 T8 z$ F
4 @1 H9 C% D2 P
$ l9 p4 p( O% f$ w: t3 e

" o8 v; l+ b; M5 T6 f4 l0 C6 Oto get-color1 `( B8 h) j5 G" b% Y

/ Z8 h& ]! b3 }0 d2 A& n' qset color blue

7 G# j7 D' ]4 Zend5 N" R& I/ w& i) N: a6 L( \* Y/ W! V7 w
5 Y: E% p) {8 b# W
to poll-class9 h& V! y$ H4 h$ Q  }- G
end- m. o. c! f1 [3 z1 q5 R" o. d
$ W, ], ~: Y6 K0 N7 X1 q
to setup-plot12 I9 P. n2 O2 j% B; k
0 f/ H! l  w6 Y1 b/ t  a' Q
set-current-plot "Trends-of-Local-reputation"
  z0 ]3 _1 z- W6 W' `6 x
; a8 H) U  ]  H
set-plot-x-range 0 xmax

& K! Z6 q5 s) }1 Y5 y1 @+ e$ r2 |+ m  E4 t8 C  @1 e% P0 @, Q
set-plot-y-range 0.0 ymax
+ M: U& I1 ~. _- `' [
end' c- W% w- T3 _0 ~& P; G) T

1 G4 o  T8 j. o- ~  T6 H* z4 pto setup-plot2
6 J, M8 q8 Y9 C& \; ]' r8 l6 `* M& W/ M- d3 g9 i/ U  F6 \. Y
set-current-plot "Trends-of-global-reputation"

' R+ c* g  S+ k
" Z7 v# n1 F! ?! y# Bset-plot-x-range 0 xmax
# u& L4 ?, \1 z6 T: ?
2 x& M+ L$ Q0 S
set-plot-y-range 0.0 ymax

; N# Y. V, f, W" K: ]" E) Pend
6 G; m! I& T/ D: @4 f  A  V5 S! ?# J' x) X6 T/ M
to setup-plot3+ r! a( G( b) a, O, |; i' n
4 K) Z7 @. }6 }
set-current-plot "Trends-of-credibility"
# B0 t, V* W7 ~( |, D) ?

4 L% V; V4 P) J2 i  n6 ]" X" b2 ]0 sset-plot-x-range 0 xmax

, f$ s9 h4 J1 p6 q! {+ `: c
. p! z# ~9 M0 A0 bset-plot-y-range 0.0 ymax

4 L8 Z; z, N; i; q1 {0 S) Fend, J& G& |3 n. n5 x1 l" y- l, X

* p3 t. Z7 d0 {5 Jto do-plots/ l: X* e1 c1 d( T& T* k
set-current-plot "Trends-of-Local-reputation"
3 ^1 i" E, r2 [9 ?/ T% ]- Rset-current-plot-pen "Honest service"
! S( k- `. l0 g" e- J4 {1 vend
4 s, w1 I3 I* r2 T, c. u" v$ ~& m; p4 J4 }3 {8 B
[ 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.& F+ m+ {5 U# w: K5 V

) A; ~3 `' A+ [. N  |% R' H7 Z! `! i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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