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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:
5 W( f; N6 b# D* k4 y( ~. |to do-business
9 O6 f- O% _8 k9 l& [ rt random 3603 r, q! M1 I$ K7 x
fd 1$ j8 o9 [8 i# b- @- a) K+ k4 `
ifelse(other turtles-here != nobody)[; j9 r2 g3 u% t
   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.
- u: d; V7 q; `# h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 j8 d8 F) L/ ]! ]" m* a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% Y5 v+ }/ k5 s/ x) D  D
   set [trade-record-one-len] of self length [trade-record-one] of self) E! n% T# e9 f; V3 J, F
   set trade-record-current( list (timer) (random money-upper-limit))
- B4 J$ H  N  Y
# V& ^( I" g% u3 l% j- R问题的提示如下:
; B1 ~/ i( M$ w4 ^9 j* i; W
' z2 _& c; T/ E+ V' terror while turtle 50 running OF in procedure DO-BUSINESS, T, s/ l, z5 f, C9 S4 I
  called by procedure GO0 ]7 P, ]% Z" N. J' M# E( R
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; l& m+ d+ S: x# D
(halted running of go)
% }# H5 I- G+ _( I" F% S) V; B
- `0 I6 u6 S0 q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~~9 t& }( c/ e% g: m& {0 K
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) {$ I1 D8 H. q8 I- @" k1 a& j+ [
globals[1 _( j$ j$ i- q2 E4 g) `' o* h
xmax& A% n% L; @& E0 A6 R
ymax: I( C5 q! J+ D: W% a. m
global-reputation-list
8 B+ f$ [" d( b8 v+ q& Z9 X2 e; V9 A( G
;;
每一个turtle的全局声誉都存在此LIST
" B" e6 q4 f" S# |' y+ y- Kcredibility-list, `5 v0 d: g( K, @
;;
每一个turtle的评价可信度/ k0 {- d) N6 o, s5 Z7 A
honest-service
8 }4 s, b2 V. p: j7 wunhonest-service& N+ z* @( W# p' Z
oscillation
& R, k7 ?6 D# N9 H3 ]( m& `rand-dynamic7 x# t  d* k- s( t
]+ A# W* y! z- P0 O2 s

6 W: h% i$ M  s9 w- D9 S( oturtles-own[
8 l" u8 n" A, r; O. ktrade-record-all: t/ z# K9 q  ~0 p3 a
;;a list of lists,
trade-record-one组成
7 D; W! a2 B: Q4 V+ `* xtrade-record-one& q+ l  Z9 }( D( K! d3 [. C* i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, n7 m' R$ a; q( d% P
/ P! l" v- }* x
;;[
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]]. j/ W# {0 K& R# T
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]
* \& B. a2 h( i  qcredibility-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
; ?5 J( Q  d' T6 d# t/ {; Oneighbor-total
: N5 x; ]- p+ P# \4 I# Q;;
记录该turtle的邻居节点的数目& p+ {: p# E/ M+ q1 P( [0 p6 m* l9 a- C
trade-time
  n% U! L" T  Q: r. l# u  K;;
当前发生交易的turtle的交易时间7 r6 J3 m  H- ^, j9 @" W
appraise-give
6 `3 c3 D$ l/ C;;
当前发生交易时给出的评价! |. Q% ^6 _( v$ }# e! t5 m: ~
appraise-receive( t) x3 u: a; u
;;
当前发生交易时收到的评价; c) J9 E& C8 I! G8 H4 n) \7 y2 v4 [- I
appraise-time  X* O1 p7 a  ~" J9 ]3 O/ o/ M6 U1 Q
;;
当前发生交易时的评价时间& l; ^$ P1 ?( y( }, S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 u1 |  E. r. B3 Z$ I& jtrade-times-total9 b! ?$ L5 B4 ^. n5 j, C9 Q
;;
与当前turtle的交易总次数5 S7 }9 O# j- N% r4 U
trade-money-total  T) o2 [8 r8 O5 o% V' s
;;
与当前turtle的交易总金额
4 C7 |9 V) j) |, a4 K# Ulocal-reputation
. q; g- Z3 b% T0 T6 `( m  w4 L; p" Pglobal-reputation
4 ^2 N# v# p' h  d" lcredibility) `) k' [' O/ W# u( r
;;
评价可信度,每次交易后都需要更新
6 E% [9 ]* i9 I; a( Z! zcredibility-all
: G/ p; p, H/ V; t: Q( v;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据% m0 g8 f/ u! A- z0 ?1 V) @

  y6 b5 l" ^7 F2 b$ x3 M;;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0.56 R( L/ Z) T% ^  z6 L
credibility-one
4 O8 ?% b+ M& ]9 q% ^3 B- I+ i;;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people5 R2 J% C% V; A9 C' K
global-proportion
! [6 X' }" D9 F% [customer
2 I9 a8 U! ]! mcustomer-no' P- ~9 x0 w; y0 y
trust-ok
' b+ Y* r9 j# Z$ t& Vtrade-record-one-len;;trade-record-one的长度0 ]. \2 h/ q+ _
]- v: ^  X8 I5 t" h
& ~, }5 ~5 W0 I; k
;;setup procedure
% r+ T( t3 o3 y, [. |* v$ D" t( z, F
to setup
' k7 C6 {) P$ m' @) v) \( n8 p3 f. ~! F& ?
ca
2 \( B% Z7 C4 _" P; C
% B# \3 q/ x4 I# {2 n* E
initialize-settings

3 L. x# a% J% x; T
/ a" [) |) i$ m8 S7 T, b, gcrt people [setup-turtles]

% }; h3 @8 V2 ~  I5 P/ q$ ~% g1 W& `+ e  H4 j/ F  G& o
reset-timer

7 u6 u# p: W7 G- ^' J
& b. P: j, s& D5 a, Jpoll-class
4 m# p4 w. Z4 h" u+ L# ]
2 y7 E6 v: I* y$ J1 r: o, a( x
setup-plots
# T' ]2 j- g7 u8 S
, w: }, M, e8 `; J
do-plots
2 Y5 l; h8 J# @, w5 }: {# s
end
% |; u8 j( l/ J8 k) I8 `- x" w6 w% ]9 k3 _) `$ K
to initialize-settings
- i) e: w3 k* M( h
/ Z- R$ H7 S* t% T. Xset global-reputation-list []
' m/ k8 L( E+ i* g# z7 R
" _8 I/ v0 L9 ?1 q6 `. V
set credibility-list n-values people [0.5]

" E( C* O+ L* D! c: y: t- d+ ?' \
8 R0 ]  ]5 b2 S9 w3 Q# _+ Uset honest-service 0

, F  O$ x. v0 @7 G# N2 y; j, ^& ~' ~0 V, G* I/ U
set unhonest-service 0
9 C2 k3 D2 n7 O+ N+ A3 _1 ]

2 S1 U7 X4 A; ~& gset oscillation 0
" d9 R& E2 H% V1 G9 W/ u0 ~
: G% K0 u" q* I; H+ E
set rand-dynamic 0

: I2 i  i4 Z' a. D) v& C9 |end: \5 y" Z  t' t. T  s; h7 i- L7 R

3 _- X0 O3 h. Q% Hto setup-turtles ) ]" a; _! B. T  O) K; }
set shape "person"- M% T$ |; q9 C: E$ g9 J( n
setxy random-xcor random-ycor; @1 n3 O, H  R5 w/ j
set trade-record-one []
; J9 _% `% Z. v# y( E
! L2 E, G3 y0 a  r( h8 b8 _) ^! Z+ \
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 ^& L2 P4 H5 M% f( F8 f

/ {1 ~4 {- a* A# Aset trade-record-current []
  [7 |, d; r# l/ l7 O- W$ Iset credibility-receive []
% Y% H& W, y! s2 rset local-reputation 0.5
* i8 n  f, `0 t3 q; ^( e9 @set neighbor-total 0
5 J: w: ^; G3 b# gset trade-times-total 0
# t2 A/ K% m; d8 j* hset trade-money-total 0
5 u: E& p# Y6 F. L" sset customer nobody: E1 {0 _& o3 v4 F- ^4 @
set credibility-all n-values people [creat-credibility], C+ C! v7 F0 v2 K- g! ?
set credibility n-values people [-1]% p. N( @9 d' G0 a
get-color  L  s, C8 M# w( o8 v& {
& R' L5 D/ p$ b5 t" z! D
end
; o4 d# g7 Y. W. G/ @) ?# s
5 I: k! m7 v$ i2 ~6 g6 E/ r( rto-report creat-credibility
# A$ u2 V- q6 V, |5 L! F: wreport n-values people [0.5]
' l. _4 ~0 [" {0 B% U: e2 y5 eend
; I! {! W; P' [6 Y( U
% u2 K  T) x! q/ r4 x  Lto setup-plots' p- ]: f& c0 X6 ?: o" n( A
: O* ?) G6 ~+ k$ ^: w
set xmax 30
0 X7 C+ e( b) T

( F! ~( z3 }$ m. ]$ g+ @8 mset ymax 1.0
( `1 C- `. {  Q, _3 k* p

4 g0 w( N4 F9 |0 n# Gclear-all-plots

# q3 `- C7 N& O& d/ d" o6 [: ]7 D6 ~' i3 M9 k# a
setup-plot1

/ m2 X) D4 {) i% D- x' F8 p, e* P& m' I- W1 N; `
setup-plot2
  d* [5 X" u+ S2 R  q) [( A- U
& ?$ d! [4 M% c, U/ ]
setup-plot3

5 o4 y* _" [4 m5 o/ q, R' Qend
# r+ S- ~  g1 [
  C+ c. z" Z3 H' O; u;;run time procedures
: T  Q- C1 n7 Q. C
: Z8 L, B, S8 [. \& }6 c9 `; l. q1 jto go: K  q& A  R1 f) q% C2 [

- l& x1 r, a8 a# t/ m7 A* kask turtles [do-business]

4 ^+ G' h+ f. e- b( d- Eend
, \" H" N2 N% @: ~: Z* w
, S* b3 h9 v. L- Pto do-business
: q% u6 ~8 y$ a" o1 d

* n* `) R" U# L9 d. {& S' C% Q4 c- m5 `$ ?. i2 N4 p
rt random 360
* j. ]- F, o7 ~6 r0 k) T
. _: B( S( M6 T& Z4 P* P. i7 B, x8 n+ B
fd 1

" b+ j8 A: O. {4 l8 v' B& M6 C) M2 B3 a4 @( ~7 {& r
ifelse(other turtles-here != nobody)[

. q# {5 Z  Q9 b# b( d' x$ j  c
  i& e8 a% b2 Z4 b9 vset customer one-of other turtles-here

/ C3 c+ @0 V+ v; k; x- }9 J: N) Z. g- v% Q/ m. Q# i  B
;; set [customer] of customer myself
5 r/ I! b0 D) A$ W) t
' \: W2 _0 i# y+ i7 l
set [trade-record-one] of self item (([who] of customer) - 1)
+ u+ R2 i  t2 q4 |  g! x[trade-record-all]of self
2 N# g) g, E: l( d2 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ a; e. o" `' W- m  w" W3 n
& j  Q) w/ K4 h, xset [trade-record-one] of customer item (([who] of self) - 1); [" i4 O( {/ ]
[trade-record-all]of customer

3 y7 r/ R! I) z1 M6 _' P
2 Z6 J1 l4 p, i* O3 o4 A: pset [trade-record-one-len] of self length [trade-record-one] of self

  |, l/ l! p; e2 i
0 U7 F7 e5 Q6 }2 `set trade-record-current( list (timer) (random money-upper-limit))

8 |# X4 X6 F7 c, P+ t5 H, i9 a3 c: F; J' y
ask self [do-trust]
2 [$ h; r+ B$ ]/ E$ v7 ^; A2 M4 `;;
先求ij的信任度
9 }6 M; e, j3 q3 x
2 Z9 w9 B  j' Z' wif ([trust-ok] of self): ]5 m6 S2 ?; d# m4 p
;;
根据ij的信任度来决定是否与j进行交易[
7 e! y1 }. o3 z& S/ C* |6 Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  A# V; z$ b- c4 [- u: x

1 @7 F2 F. e  a& G[
! c2 T4 a! Q  G  V' x. `2 B
3 a7 n9 _" j* L" I- o$ P- m; ]
do-trade

, B+ G- F6 N5 n: e
9 k1 W/ H! x- eupdate-credibility-ijl

# Q0 @$ W  P. C9 C$ g$ t/ C. Z
6 `' t3 {" [: wupdate-credibility-list
* s$ [# A* F- ?$ f
" ^) Y  C" G" D* M4 f8 E" q, Y+ c5 L
1 E: q$ s0 b0 h/ z- Z  J
update-global-reputation-list

% l6 A' W7 L, T* S$ [" s4 f. m+ b5 x, K& d
poll-class

2 W& |: O+ `5 J2 N" @( t0 c1 J. ^4 g. S3 g: Z1 }
get-color
6 t/ y( g) A% Q0 {  @

  r' Y2 V3 ?, \]]$ I& O' x& w( ?6 H0 i8 J5 @" k
, [3 m+ M( p& y+ Y- ^
;;
如果所得的信任度满足条件,则进行交易9 A4 F3 a* [' v% l' c* s& _9 C

. |& Q: z+ T/ b( E$ w0 h[

0 j$ `# S/ M# E, N, b0 J- G" t# Z! v0 S" l0 W
rt random 360

2 ~! {. d8 ]' f' E* |4 |8 J
' }' I3 {: g. C4 ~- t( qfd 1

4 ^2 k! R* e0 X2 l  L& A! j
6 E% l( J! K9 F! D" ^+ L* N( J]
0 n, a* M, a: x# @  z
% J- j- {4 F* T6 I! r. m. `( b2 D, P3 C
end

% H* j! v9 `( ?! h: ^% ~6 V1 q% k7 [+ d! a  ]' X
to do-trust
/ t& S! L, ^, g5 }3 wset trust-ok False' x' F* \1 b# ~8 G/ ^& r3 ~
# M( h& x% A; X9 X

  v8 |9 v8 _  ?& K; x' `. zlet max-trade-times 0
% r: A' i: c; f/ C! y; j5 ^* ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 i; ?4 P7 [* olet max-trade-money 0" D# R' C6 m  t/ }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 V. }# l  }4 B9 z& S) }5 I: g+ Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, }: V5 E7 K% x" F: E0 R3 w& S: H% g) E: d6 n; e2 q  C/ Z5 b
1 P! x: t: ]  `* O
get-global-proportion
$ t1 ^0 }3 c  O8 z2 k5 d# glet trust-value
& G9 |; {) n) m) p2 l7 }. V: Z5 alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
& ^0 ]2 c# U- M0 L
if(trust-value > trade-trust-value)' P3 J4 K* P1 N0 H
[set trust-ok true]
! ?0 x% p% ^7 o  I5 o4 f# ~6 Bend2 p) f: n9 }( D) R- Z
7 i( G* x, C/ z0 K9 k
to get-global-proportion& ^' Z) x% C1 C8 c5 [" c
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 k  T  f5 |9 X3 s3 e2 B
[set global-proportion 0]
. t( m+ T' k/ R* I* A- W, O4 ?[let i 0
1 s, d: [% p8 {( ^let sum-money 0
& E% y8 S$ w- H1 p3 f( y$ h3 S4 O* @" @while[ i < people]2 r7 T! T+ E3 g- v
[
3 S9 A2 c2 s) F4 L3 d0 D- Iif( length (item i
  Z2 y* Z3 j+ |' h# G; R1 v[trade-record-all] of customer) > 3 )
) o) D9 i, c: f) k
[
$ |- i6 [' A* r9 q) }, ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) t, M4 M) W4 t]5 U4 _* D( f$ R# I7 [$ j
]
1 _- o# U# A5 y0 X0 K& Rlet j 0
$ g: }0 I- b( x! @/ p* Zlet note 06 v3 _  u; u* @$ Q$ H( }8 i
while[ j < people]1 J0 M% Z6 B' a# H! }# v4 w. X
[
, ?+ ?$ u! s3 A9 W7 O% T- o! ^if( length (item i
; v! ^; k$ Z' S$ i* e[trade-record-all] of customer) > 3 )
$ ~7 K  K+ g1 H* P6 S
[
7 ]. R9 `0 T# c$ f" s9 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# h1 ~: \6 v, _" P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) y0 v4 }' k7 W& u9 d' l4 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ j2 V& l( p, U- `; Q" X
]. J; r7 x+ x# M2 p% ^' ~
]$ |$ N4 i! ?6 @6 L. ^! \: V; [
set global-proportion note
6 I. c/ V% |1 I# G. D, h8 o]
# L) k& P! B: P; y6 d$ W3 Q% `end
" M  U$ x" `1 y
3 }3 I# p7 R+ |. G) N& b# yto do-trade
- c1 m6 r  \! t! P% m! h;;
这个过程实际上是给双方作出评价的过程
6 N* ]1 @2 w4 |2 e5 N1 D' |; Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 I7 E. Y3 X% R  C8 D) E0 [# Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' {0 o6 u0 h0 k0 ^
set trade-record-current lput(timer) trade-record-current
* l* p3 j" u+ K( p9 x5 L;;
评价时间. I7 W# Y% A( v( Y
ask myself [
& g4 y* r) t4 t2 K0 T! J) o# qupdate-local-reputation/ @6 E0 X. L. X; }
set trade-record-current lput([local-reputation] of myself) trade-record-current' u! M+ q) A/ t: [1 O- @
]
# L& Y4 d& k% I6 D' N" K+ a( kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 @% ]$ D6 ^. N% Y
;;
将此次交易的记录加入到trade-record-one# M. X. S, f9 v+ S8 i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ q  k3 N% @, {- Elet note (item 2 trade-record-current )
8 n" f% k6 j. G" |. ]set trade-record-current$ z! O; o# g# g( {5 p( Z* b1 Z% f
(replace-item 2 trade-record-current (item 3 trade-record-current))
# G' }0 s0 F9 H: B
set trade-record-current# D0 V$ ^6 E3 i# S  s( h
(replace-item 3 trade-record-current note)
9 o! b3 ?  w" e4 Y4 y, P- {9 L* p. d) A1 U
- j6 x1 z2 n8 y& K" i
ask customer [5 @: D1 B* L, m, q
update-local-reputation; h8 I- L7 t4 n5 N( s9 E0 z! G
set trade-record-current
8 H7 e5 X& s/ Z0 p: x( F8 q  z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" h2 e0 ~" ?& p  V( ~) m]
$ \+ @; V9 s# c! k6 A3 K: Y1 |- d) L" r0 z8 |1 P% s
( X  k5 `- `+ {( U3 X0 Z  v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 F' V+ M4 p9 c( u
% Q% x' O- [8 n$ y' C+ \* v7 N
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 Z9 X2 h  J: j;;
将此次交易的记录加入到customertrade-record-all
- n# c% u' r* s% eend6 g% e1 }, O% a6 [* }8 l3 N. P' v: |
  y  Z+ L* a9 Q/ d; A8 ?# d
to update-local-reputation9 F$ n- x0 ?/ t* F4 W
set [trade-record-one-len] of myself length [trade-record-one] of myself/ x, ]5 ]  P6 i, d3 y

8 R2 H5 ]; R. u' A6 e
1 A( `! a+ G2 @- {, M;;if [trade-record-one-len] of myself > 3
! f9 H. B3 u' Z" o7 \" I
update-neighbor-total6 E$ R5 [, w- j5 u1 Z' K; Z; W
;;
更新邻居节点的数目,在此进行
6 R9 I9 p* Z1 f5 ~1 [+ Hlet i 3
5 c, B# {' T2 ]9 j/ Rlet sum-time 0; D- }$ e& ]1 n& ^9 k/ \! P! M/ }! }
while[i < [trade-record-one-len] of myself]
( M1 N  n9 Y6 v' f' u[# U/ O4 A" @& s4 \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# c. {, x, w; w" f1 Q, z! T6 B& W, Xset i7 d; u7 u1 ?( o' I# {& j) n
( i + 1)
. l2 X9 J' p5 V9 B% \' I
]
& a& ]' b( A: z$ x) }9 e6 N9 Hlet j 3* x3 c$ ?6 G6 H! B5 d7 \# V1 v8 @
let sum-money 05 i1 ]/ o( {5 x, c
while[j < [trade-record-one-len] of myself]
  W6 G) \7 t  w/ q, E4 `[2 a1 J6 A. E' ]6 ~% _
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)+ K  h* g- k) H0 ]+ A" o( f
set j4 K; m) M  H# f+ E7 Q8 R
( j + 1)
/ R# R5 ]" p- Y5 c
]* O' v6 F. v' F' X; `( c
let k 3
2 u* k# I# y( q' B, _% [& Blet power 0
4 P6 R7 {- X! ~! hlet local 0
! S0 E% `3 q4 q/ e+ X( j4 e) Wwhile [k <[trade-record-one-len] of myself]
( c. m) x, |# U; }, B3 Q[( V; `1 j2 y: W6 @" h
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)
4 Z6 i  w& n  l1 h) Lset k (k + 1)! \9 d& q1 j4 R5 c3 b8 N
]9 A) I% k9 Q6 p. ?
set [local-reputation] of myself (local)
/ V/ f# @' j+ F" c: Xend$ N5 ^  e0 g+ F* m
: J- H! J, n0 S  a2 q8 q% i
to update-neighbor-total
- u) c* K, [4 B
+ \- S. x& d, }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" p: d9 V( o6 P5 J/ ]; Y

1 G: _2 I- k" S1 P1 l" H$ s3 z
0 h& ?, T' w, |0 o
end3 ^2 n  ?" P! P/ |+ @3 u3 |
" Z' [8 w0 [, w* _$ |$ Z; \
to update-credibility-ijl
' w0 C5 S- r% ~* B/ x$ U  t9 k9 B- ^' L4 C# U: m
;;
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。
  ~) h5 o/ w, W7 M9 B: nlet l 0
* D$ G1 V/ O/ dwhile[ l < people ]
& q( [, e3 Z) D4 v( a7 J;;
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
8 j& {. ]/ @( P/ J$ j. j[
- o* G' k0 m& ]0 j5 j: ?1 hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 }" w4 t# A1 C5 |3 C- _* j5 a$ g
if (trade-record-one-j-l-len > 3)) F% S8 Z: M5 d; W
[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% Z( D+ a7 w( |! v) \! L8 j
let i 3- B% {+ \, B. P6 W
let sum-time 0
6 `; V- q& ~9 X8 mwhile[i < trade-record-one-len]
+ b# {+ ~0 o5 x( e[, R8 J) W2 m# G( M  c
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) m2 ^' D6 F4 q) e9 u' h  q9 Rset i" D# U  n2 Z5 ?. k5 k
( i + 1)
6 Q* n8 [+ \9 \: ]" c' i
]. r9 k3 D2 g3 a0 S2 k
let credibility-i-j-l 0
: T$ I7 P' m4 `;;i
评价(jjl的评价)3 g7 H8 D: f$ \/ u
let j 36 m  B( v& K8 n4 C4 B
let k 4
& v3 Z+ n% z5 V3 Z5 E0 N# w% P0 ewhile[j < trade-record-one-len]; f9 @+ O( Y) |; o+ i# M
[
4 k1 L' `3 U, p$ r( Vwhile [((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
, c- U( M7 C4 j2 o! j+ J6 y$ G1 Zset 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)) {% ~+ n( \2 M4 y& |
set j
' V. Q; C+ P/ x4 i( j + 1)
" b& B8 ]; W# g0 h. G* C
]
* W5 R2 Z0 r, r& f, h2 R' }set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
2 j+ |$ {1 s2 g
( S3 M& m- _% ^2 Q

7 B& _$ K0 `' j9 {; n: ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 [1 r7 z7 t  B/ N9 ~
;;
及时更新il的评价质量的评价- L! y1 ?0 R+ r$ J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. @) A7 Q% Y# i/ b5 ]2 r8 Y; Gset l (l + 1)& U+ {+ V. H% F
]+ Y( W8 W" n: E' e% m7 C1 S
end2 k0 [3 D' h: s( }8 L; r! w

6 E0 N/ X  w" m; o; Vto update-credibility-list
9 k: ], @- o* }0 ~let i 00 z7 x! S6 A% g: r5 D6 t# |* ], z
while[i < people]
  P) L1 }  N( q4 Q7 y7 j[
) D" O* c3 m+ E! blet j 0
& E+ K9 q9 e; p" s! Flet note 0
, N$ F4 g1 ?/ p" C- q5 L, Clet k 06 n$ d, t. C! H7 M7 O
;;
计作出过评价的邻居节点的数目) I; h! H) l8 Q4 M5 P5 [3 y
while[j < people]
3 E9 a- E1 B7 A  [[4 h- G1 c  t! _# z/ H9 v( i
if (item j( [credibility] of turtle (i + 1)) != -1)* }( ]# S0 B0 Q8 W2 q0 o9 K" J
;;
判断是否给本turtle的评价质量做出过评价的节点
4 ~; Z& t4 Z7 F: p% w[set note (note + item j ([credibility]of turtle (i + 1)))
& {) p1 a# S  }; R;;*(exp (-(people - 2)))/(people - 2))]
' D, ]. e: E$ A0 h, Y7 c8 Z
set k (k + 1). ^/ d+ N4 v2 |  `/ K, Z  y; V! a3 _
]
$ M( w+ \5 _% q2 F1 _/ [9 Z8 H7 M* uset j (j + 1)
  g, ~3 t& M) x* U7 f+ Y) @9 Z]
5 l# Z* e* U) R( q  g0 }set note (note *(exp (- (1 / k)))/ k)
. |7 [. \. a4 X9 uset credibility-list (replace-item i credibility-list note)9 z# @. O8 R9 m4 y8 X2 G& I
set i (i + 1)2 l/ x* q3 o. l- O! a1 L
]8 D# a9 {, n; p/ f" S
end
) f. e4 i9 {5 L+ m( G+ K) K4 o* Z0 L$ l: m1 O4 s5 i
to update-global-reputation-list2 a+ g3 J$ Y: ^' ]8 g* q6 O" R
let j 07 `  y# o* H9 _- Q
while[j < people]
+ o+ C) H8 K# X8 N[
+ W8 A  @3 g- n! j" v0 i, Ylet new 0  ]" _* e  n0 `; `  W& ~$ U
;;
暂存新的一个全局声誉3 j  M& w5 w2 b! K! ^, @
let i 0
% w1 @& S6 m- ?0 Dlet sum-money 0+ e9 `7 r8 [( \- t& w: `
let credibility-money 0
% ^- @" [3 J+ e1 Zwhile [i < people]% k1 c6 s: |# t4 h* |
[& M. j9 A7 }9 d# k; c$ J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 R2 M6 |2 \) ]0 Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 c% w; J& n! M+ O: U* `
set i (i + 1), V4 G* c  E- M2 c4 H$ F
]9 g! B* W* r+ J+ J/ {
let k 0
* X2 X8 N' Q# d. Blet new1 0
+ a7 Y, L" b1 V1 Y8 Q3 Wwhile [k < people]# `# M* p1 r. v, U  c
[
9 @& y. G0 m! ^( U, aset 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 y0 T) n4 \1 A; U3 q4 Gset k (k + 1)
6 i  R- W6 V5 b& K]  Z9 e+ X" c4 M& j0 ~+ s$ ?- i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! [4 f: }) ^5 ~  ~3 {: u7 Nset global-reputation-list (replace-item j global-reputation-list new)5 {! Y, E' o$ v7 T
set j (j + 1)% b( B5 b$ c: }
]
6 a7 K9 h; ]7 t. d, r$ X( vend
! _# o3 R4 B- V4 T, {( s5 S0 R1 D; G
, c; V  W3 W6 r

% U6 a0 A% U. Eto get-color0 ~/ ^3 |+ s+ I* `$ U. `) I2 i

" b, I  X" [1 I1 wset color blue
3 ^8 R' k# \. f9 h5 C
end
+ A* v7 a$ y7 Z" r  |& j2 t8 ^* O" x' G( f
to poll-class( }! x! b/ I2 `' o+ [4 j) H" P" i6 _
end0 O* g, b4 \" j1 l$ j

2 O$ o! n' ~2 q( }4 E' c* V  W; V  `% Xto setup-plot1
" _2 {3 h/ j5 z- V! t* i
5 x3 p1 W1 h' [. Z9 i& ]set-current-plot "Trends-of-Local-reputation"
& [, R- L4 k& k+ O) c  R

5 E5 d4 G* T, i6 lset-plot-x-range 0 xmax
  L# @9 T# E9 H+ W4 @

% X9 A4 r( }& r# Xset-plot-y-range 0.0 ymax
8 \- Y: Y  x1 Y) s* U
end
& h) }8 k7 h# H: T1 {" v* E' r8 G: x0 `4 D; ~
to setup-plot2' q" ?$ F/ @% w  a$ Q4 s3 E; l* ]" q

4 f6 m" [1 o' j  m0 ?' N3 Bset-current-plot "Trends-of-global-reputation"

" k9 k3 y2 x# e6 \& |1 a# s; Z' c
7 B0 @5 T6 v: }2 ~! X% ^0 t# ~7 ?set-plot-x-range 0 xmax

2 _; `& g+ ~# q! k4 t' c5 a  k0 O% X9 v
set-plot-y-range 0.0 ymax

! l- u8 p4 P1 M% h; Dend
7 O5 z- D1 v9 `$ A& X/ u* t+ p2 G
4 c- I" P5 h0 R: X3 m+ [" b, Kto setup-plot3
, @+ k" z: r( |/ i
& w5 M8 o/ @8 aset-current-plot "Trends-of-credibility"
- l$ P& E5 ]2 s* M

" {* ?1 K  t8 c" U/ P! p# H+ r% qset-plot-x-range 0 xmax
, K* \2 f9 S+ W4 C

4 s+ m3 Q2 r2 t4 J  h. [- Qset-plot-y-range 0.0 ymax

9 T- V9 o. V$ G5 iend
$ o1 h1 _  Y0 k% W& m' n: h0 {+ B' h7 R) W8 `( y" x
to do-plots/ a# ^9 P% c& Y: g, M; B
set-current-plot "Trends-of-Local-reputation": ?& m! ~9 ~3 [1 Q/ I0 O, s: z/ {
set-current-plot-pen "Honest service"+ ?' f1 I( P. l$ y- {
end) @& H+ k) P4 O+ r, K2 i  Q" }

( v" R9 `  P) \9 \5 J6 k[ 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.
! W' I! b- x) M) r5 o, Z8 c+ o3 J$ I& D
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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