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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:* A! S: V, ~& x: n) ^
to do-business
+ I; d6 y0 A6 `( v rt random 360
2 Q! c6 }, \& f8 W* l7 s1 |% w( @ fd 11 G0 f' c7 b3 _, n% l' F
ifelse(other turtles-here != nobody)[
: X4 @' D, w& p+ Q$ 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.  L3 Q5 j' [2 r5 e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 Q: n# h- K3 }: k8 i# M9 W% n% e
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 q  K8 j% @% N; v2 |, n+ Q7 J   set [trade-record-one-len] of self length [trade-record-one] of self
" [2 L& w8 N& J# ?/ k   set trade-record-current( list (timer) (random money-upper-limit))$ Y+ ~, O: e2 j

. |4 h$ X1 m  H3 u8 d* J问题的提示如下:! x0 r4 c# n9 @4 x% I

# {" L7 `8 R2 herror while turtle 50 running OF in procedure DO-BUSINESS
# n. V) s5 x1 p2 Q$ N; P7 D3 a4 _  called by procedure GO! i! V2 E2 N* R! e
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 U5 i; M( u# C( {: S  a
(halted running of go)$ A* P% p) v2 }) ~" B$ [, ?

; w- h3 w" N0 m' 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~~6 k2 {$ B  e- J: z
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
' x/ ^9 C- f( F: B. W( T- nglobals[8 U) k; ]. F8 B
xmax) l3 r9 R$ Y9 u9 `  |1 p- t
ymax, C  t9 p3 t7 u/ a' J5 N' L4 J7 o' t
global-reputation-list
$ Q, |9 m% b. `# |. o( k- G; Q' D  W  X3 S+ [+ Q2 w
;;
每一个turtle的全局声誉都存在此LIST
3 Y  p1 o2 d- y" z/ I0 gcredibility-list2 c; t& p# t/ \6 a+ a9 q
;;
每一个turtle的评价可信度2 |0 s) b- }6 a5 I7 ^
honest-service
2 }7 o9 i5 N2 ?, B' @* bunhonest-service
0 o0 T2 @- I! I% {oscillation( F) `! B# P6 y: M* ~. `: i" j  O
rand-dynamic
( J1 Q( G, a7 r8 S( ~$ D! V4 p]7 t  {6 M' D/ B0 [$ O
$ d- d  G1 e3 j  u1 ]9 L8 k
turtles-own[5 L- j1 V( I& b6 R, ]
trade-record-all
" f  y+ W8 b# a* r5 L8 b2 D5 \;;a list of lists,
trade-record-one组成
5 i7 a, l% v7 G% W1 m8 N5 q; {# Ntrade-record-one
" C( \6 a' a0 X;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ Z( z7 ^& p- n* t! E

# z# Y* E* [# N5 B+ A6 g9 b* f( L6 d;;[
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]]2 t" b6 `  W4 z3 t& E8 P6 ?9 ?
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% r: n" T0 @/ ], O! |: k
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
4 D7 o! C. b. @7 c0 ]neighbor-total
+ U9 L/ x0 @% @" P% \;;
记录该turtle的邻居节点的数目. _- _0 {  n* F' d1 Z0 ]+ O9 ~
trade-time; z+ `& e4 h+ ]: P
;;
当前发生交易的turtle的交易时间
: a) v9 @5 w( xappraise-give
/ u" ?5 [5 ]  I2 G  x;;
当前发生交易时给出的评价
) s, g- {: W$ J3 X+ yappraise-receive2 R' V" n8 Q; ^$ a9 p# x+ y8 g
;;
当前发生交易时收到的评价
6 P, O( F3 v$ @3 x+ @0 f( mappraise-time* _& G" h+ g; W& }
;;
当前发生交易时的评价时间
6 j6 Q% o9 `" U0 ?8 Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  k( R+ k) J3 T
trade-times-total
: S3 s! v9 o9 k) g7 R;;
与当前turtle的交易总次数
5 }; z1 w! B' Q$ R: P; N( B9 ttrade-money-total
8 n' f  A. j% Y' A9 j;;
与当前turtle的交易总金额
% I# b( v6 [. R* q8 k& ylocal-reputation
+ d9 q- ?/ B+ d1 T7 o9 sglobal-reputation
7 |7 T/ y& Q* M, {credibility7 }0 G3 H# c8 H4 H# P8 j- h1 P- c
;;
评价可信度,每次交易后都需要更新2 n% U/ l+ W9 [
credibility-all
" r+ n- K8 F# t$ V( C. T8 a( l;;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% |' E: S9 N- @3 z( G0 g' V& d

& r9 z: o2 ^* c: v' _! L;;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* A/ b" ~8 _! }6 r
credibility-one, l9 n9 M" D) j0 c  J# 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$ b0 n$ f3 F9 O; e$ z' |
global-proportion. R& S$ v& k% `$ e4 U' e% d
customer
% K* I8 s5 f* B; `, W2 dcustomer-no
" [* s! w5 }5 F$ i/ V& S9 s8 [trust-ok7 q+ b" O+ V8 Z* O  R
trade-record-one-len;;trade-record-one的长度7 B5 V5 n+ _1 D! K/ Q
]5 V/ k2 I7 m0 K1 Q
% Q! `4 W0 t, q( r8 q' K" Z* s
;;setup procedure* s9 K& O" {) k, v+ }! H3 u! d# I
2 f8 M+ M% |# p
to setup: z+ S% w0 {+ }3 V6 g

9 I1 Q6 y) e' M3 Z3 O( wca
# {$ P! r" \5 L( N! O) F8 u$ L; A
) n9 w- ~0 E6 @2 ~+ P5 p
initialize-settings
* m7 B2 t" Y" P# n& B
! R& Z' }$ h5 M8 ~" p' Z" A! v
crt people [setup-turtles]
* @/ h$ O* `5 e; \4 X  p* j
  {- s. P  \- E4 F+ U! l4 w* z+ d
reset-timer

/ |: l6 @8 M5 f4 `* }4 s
! o7 S/ c, r+ W  o2 Ipoll-class
! f; W% x" v/ i2 R! x
' t; q$ H: j" r
setup-plots
& A3 I' W" ]! J6 g
* Y3 }" a$ ~/ y, Y" P
do-plots
! \; A1 C3 X6 d1 b* W
end
/ e5 q/ w8 ?0 _, L; g* g2 d* ]5 s; v
# r  E: e) n9 E0 B3 f* g" Y' Yto initialize-settings) H0 J- r) N6 d6 }! W: P0 f$ B; f
3 i0 m& g  c0 }6 d/ B
set global-reputation-list []
  C1 N& F; Q: z2 j1 U7 e
. m. j' t. g( ]  b1 y
set credibility-list n-values people [0.5]
6 s  R; D: d8 V9 h* J

8 F/ X9 ?+ f% R" ^/ H, U7 h+ Nset honest-service 0

- q0 U/ ]. _7 ^5 V' Q5 S
3 ?, J1 K4 s/ kset unhonest-service 0
- i& w4 P9 T8 G* V1 [! Z3 T6 X

" k( W' P! ?9 _1 P! Z9 v' e: N/ Fset oscillation 0

7 T/ N; r, P4 x  \/ Z* f2 ]
# ]) l* B' Y- D" o+ Sset rand-dynamic 0
$ W* `6 F/ S6 o2 s6 z' H
end& I+ p6 B- H. b6 L  v+ e
; f& L- _% Q% ]; _5 j! H- K" o- p
to setup-turtles ! s( ~5 @! T! k' V* {* D8 e
set shape "person"
: w: Z" b$ u4 E; @) c: ysetxy random-xcor random-ycor, n3 K' D3 ~9 [. Q
set trade-record-one []; E* W4 v7 B9 ~/ T2 k$ Z% ^

- W& h0 B3 j+ b& B5 ^set trade-record-all n-values people [(list (? + 1) 0 0)] * f4 d" \* R$ B, f6 h
# q. p0 q- K; C
set trade-record-current []
. W" _8 F: a7 l# j) Oset credibility-receive []4 D5 D2 {9 z: ?6 z  j
set local-reputation 0.5( l# ~2 X4 Q4 P/ Y3 I$ V9 y' [1 R4 Q
set neighbor-total 0
! ?8 K/ }; u. E6 J3 k" a& K7 Bset trade-times-total 0: `5 x2 Y; T( K" @7 D9 W
set trade-money-total 0
% V- p; }  {2 W9 A3 k, Lset customer nobody
1 L! L0 r$ S# wset credibility-all n-values people [creat-credibility]( _3 C9 d9 e- v
set credibility n-values people [-1]
* s* v- o8 T) J1 P# a! Z& _. }" lget-color
# a* u9 H4 k3 P/ c! C) H5 A
* B7 I/ i" e) ]1 w3 v
end
. m/ J9 C. A' ]; c& K
( `; y( R: h* a3 u) |- tto-report creat-credibility  s" f- n+ Y& R' a: ]. _$ [8 n9 Z
report n-values people [0.5]
% b, R( S  ^) k  {2 `end  X2 P' G% _) ~- o. A( y
: ?& {& }3 C+ C4 D
to setup-plots" p/ O: h$ N! ^( F5 @; d
, |; h- C' ^/ b/ {: c
set xmax 30
: S8 X: I0 d# I( N. O
* z6 r9 d/ _+ J. H" F
set ymax 1.0

3 M& q: m! H0 \7 v' R  a
0 N6 d" F# {& ?9 a( P, dclear-all-plots

1 A7 M5 c1 D, a9 V' s% H7 A  M) V0 e" T" w( }9 I9 k* @
setup-plot1
+ F% b& K" v7 G8 Q0 t4 \& Y3 k9 X" A
9 W+ u- w" ~" ?5 l0 y! d$ E
setup-plot2

+ s: s  Q- b5 l7 e6 p! I. r: e! d+ H* U/ S+ o3 n
setup-plot3
. E4 L9 D+ Q2 O( T# r
end2 M' H" D0 }: a

( S: T" V- V0 }, P* d- a+ _( t1 _" [;;run time procedures
; S5 T3 ^$ y) ?( \0 f7 \, l
, \* `. N* C( e/ D7 P4 Q: lto go
. m( I7 b5 |6 m9 h& A( e2 v8 }7 J7 {- i- v
ask turtles [do-business]
, P" E2 }2 u" P- Z; `# P$ G, s
end6 d! O# V( n& ~+ T0 T
; w' f7 u$ c. l4 B5 E2 C
to do-business
( [: \4 P0 |0 n% e; \: H
8 R8 [! X5 E) A, ^! g& s

8 @' I0 m6 p" ~3 A) Lrt random 360

7 M% X3 c# o4 D# o4 n- p* N5 ?
+ u: a" T' i3 a( j2 P; C4 f* nfd 1

" K7 V6 r2 L* X- L/ ^+ k6 o; t/ f$ t. `9 y0 P" P
ifelse(other turtles-here != nobody)[

" g( R3 g# ]+ \8 z/ S. W2 w' L: \
set customer one-of other turtles-here

* U4 C& ]$ v; j: w, @, C- G. T, I8 A9 z
;; set [customer] of customer myself
+ ^$ f& e( i# v5 v2 k

. J9 t& q+ s2 ~: D# \! nset [trade-record-one] of self item (([who] of customer) - 1)
( P4 \8 r6 o% ]' l$ h[trade-record-all]of self
) j8 L2 X& H. z( L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" ~7 s- v1 ]6 A; I
/ {/ ?/ s) P; X/ e. c* B
set [trade-record-one] of customer item (([who] of self) - 1)
- [/ S3 P# l: `) s[trade-record-all]of customer

  ~7 K* B& n: v7 q$ E. l7 s# q: Q% w8 |9 i
set [trade-record-one-len] of self length [trade-record-one] of self

7 [2 G1 n6 C/ Z, {. U7 r) i
9 i0 D" s, t/ @set trade-record-current( list (timer) (random money-upper-limit))

! O! b5 t+ H( q" b; a8 @5 ^1 `& A; [2 @$ c( F
ask self [do-trust]4 S) {( H/ i1 A8 o: M& ~3 D5 i; p' C
;;
先求ij的信任度
+ x: B3 b1 J& V) T& W5 _3 a
+ t) u/ A2 `/ `! ?+ w, zif ([trust-ok] of self)
1 e1 `/ m* Z5 b' N/ l3 r, `;;
根据ij的信任度来决定是否与j进行交易[
7 C- c. j6 F7 Z- [+ Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 P$ [$ Y9 D4 {3 {$ k4 u' S! ^
, \, R$ k- V: G& z/ t1 L) u6 X[

" S. [( e1 p6 q) o0 |6 w/ e2 O
* ~. {' k6 @8 Z; e0 R: o: Ndo-trade
- d- U# C) X, C+ [

% G) g. H% @7 v# p2 _update-credibility-ijl
4 p( J  K' Y( Z6 @; B

, }( ?; z0 _( Rupdate-credibility-list
3 w- S& i, x; i9 o4 O

, m2 A% l+ K# `
  [0 T- h& A6 @; Y9 O5 B& Vupdate-global-reputation-list
1 x* Q. t% G2 E& t2 Y" R

7 l, t+ f1 a4 c8 w* d+ t: c( u. f0 Fpoll-class
8 Q0 k' l2 C; i- A2 `2 t/ J/ Y

* w" }% d5 ]3 f+ j0 h; l7 `5 Aget-color
# g. p! ]5 {* D5 a: k
) I4 i1 j) r1 U4 t* J
]]
9 A, B9 r) T9 l9 N$ l* X7 C  o' Q" M  t$ Z% c
;;
如果所得的信任度满足条件,则进行交易/ a+ @) u% k" J! k

3 H9 P8 o, j2 i% A5 y- H1 G6 a[
- X  @. S( C& b: t$ p

4 e* R& ?' d! |& D( c( Nrt random 360
. D4 y( m9 ]" l- d/ M7 f& @! K9 x
- j: ]# e$ Z! a1 w1 T0 j
fd 1
) ~4 u* `# e. u! [

6 x- ~6 X4 e  M# X; h1 _; i  q5 l" A]
/ I! V2 f6 R- [- h# A1 k
+ x2 Y3 W! ?* x9 u& Z
end

# K3 h: M5 _& f# H. H+ N
" M# E! a# S% Yto do-trust . q: l7 h1 ^' [/ X% @8 |2 |
set trust-ok False
: Y$ y2 h' B: _- ?  L/ F. t) _) U; _+ b& c& X7 Z- q6 i* X
+ j- x6 |( y6 }5 e" o
let max-trade-times 09 g0 }! `  R1 y" O: N- K( a. W9 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- G! ]. @/ w) w$ ]5 n
let max-trade-money 0
+ t6 V/ I2 B* r3 ?$ I% |foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  y, @5 I% M  [; jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( x7 K1 `* l, H; p& o' Y
  b& m$ D. P1 z* m5 }

- E) g! r1 t& xget-global-proportion
2 a9 W, e: }( x- a  P/ [6 t2 flet trust-value' a" h+ L0 @7 b2 ^7 }2 I7 W' W
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)
1 Q1 O+ U% N& o! `2 N+ k
if(trust-value > trade-trust-value)3 @: N5 V( N. V" g: f' F  s6 r
[set trust-ok true]  _; a( [/ L8 E( U3 Q
end4 l6 n0 b' E6 g

7 i/ P# `7 R4 n. g4 P9 A3 }) s5 Zto get-global-proportion( B( Z/ c% t4 i* d; `0 ^# U" y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 u5 N( g7 R3 T" m" f) ]* U4 x. S
[set global-proportion 0]" R! f/ f' b2 L. a( T
[let i 0
/ L  z$ x  m+ ~" C1 n& Ulet sum-money 02 w  w8 w) @4 J2 {. ]
while[ i < people]
4 \: f. n. l7 O5 d$ x. J* x[
7 r8 L5 J# \# n9 B) h# vif( length (item i9 n  Z% f, c) x* ]. Y9 C+ \
[trade-record-all] of customer) > 3 )

8 H# M; f+ ]: S* v4 x. D9 @[/ D" E( n6 r) S4 I, Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). x- \9 C8 V& `! c' T
]4 @1 P( F9 }2 M
]
5 C; Y2 r" |- }/ J: vlet j 0
1 D2 D2 T1 l- xlet note 0- m# u& ?# v2 A% R' G# m: d5 m* P
while[ j < people]
. _; o" N# C( H$ y  _6 J[
; u) W) k( q$ t, dif( length (item i
5 M: I( Q( K; M[trade-record-all] of customer) > 3 )
2 V4 k; ^2 l6 R3 V( f; ~& X# ?* G% m
[
7 L! D* i+ v: l9 d, y1 }3 S; eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ z; M$ L/ k0 B[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! B+ f$ R9 g2 t8 ]1 ~/ D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 X/ s3 ~. p5 m9 k7 g' B]% U. W( q, X6 X6 K: R' w5 P& \! Q  m
]& x# z2 E( w: }% K3 v; m
set global-proportion note8 g- r* s2 M0 g( M
]
1 @6 p9 ^: |3 a, e/ V, jend, u; }$ B+ J# R3 ~( [; r+ R7 S; M5 l

2 }. Y& V5 W, n6 @+ A4 d: H0 X7 L) uto do-trade8 X1 C% J) q. C6 u$ h
;;
这个过程实际上是给双方作出评价的过程
1 n" o- S/ I" Q; K* yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 v' J" B: M  \( m% q5 A+ y$ _2 K& Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: j2 L0 U  N+ j& k* J/ y, [$ A
set trade-record-current lput(timer) trade-record-current
8 ~8 X) h9 H+ J  i9 [;;
评价时间
. _( H/ T7 }6 z" r. a2 k0 K# V/ j( iask myself [" E" y9 ^, G* Z- W! T( `
update-local-reputation" E/ w* V( v( Z" e! Y
set trade-record-current lput([local-reputation] of myself) trade-record-current# t' ]: r' X5 c0 q; a
]4 M6 K) j3 X+ ^% p( v: G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 c( v0 e! V: M; k;;
将此次交易的记录加入到trade-record-one
2 b& J  i# ?7 q* R  sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 S- a7 X9 h6 Q3 \
let note (item 2 trade-record-current )1 s4 @2 G& X4 L
set trade-record-current
2 F6 P. D! E/ D, M% v5 E4 ?* J0 L8 G(replace-item 2 trade-record-current (item 3 trade-record-current))

6 v% ~, v$ T' oset trade-record-current; c6 Y/ W1 L( r8 ~: R7 m! Y
(replace-item 3 trade-record-current note)
  J) B. g( Y: y- ?! p( u' P/ w
! s+ D2 c6 D* Y* O& t, P
; x0 ]9 [! n% q! e; K
ask customer [
% \( h" |9 H( z% g/ uupdate-local-reputation$ M3 h5 f' N& d+ t" k5 s# u' g
set trade-record-current
2 u4 [( R: d) S8 }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 l. P; a; F# Y6 \8 S4 W  Z]
# _7 O2 M' s% W1 d+ ?
7 ~9 D. I( b4 l2 R) C( F+ c0 z; A

( `# Z. u* L7 vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  d' d1 a, M, p1 e
$ ^- y5 x" ~* z$ c; R" d' ~( F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 m$ V: g& L& p. B3 j" x
;;
将此次交易的记录加入到customertrade-record-all
. I: b' c1 b' send
& _9 j$ n7 P( `  b( o. z/ _
0 F  ^( V3 K; c) Kto update-local-reputation
; [  z/ g. C; d5 Zset [trade-record-one-len] of myself length [trade-record-one] of myself& x+ ]9 I* T1 i' d$ W7 A

2 v; S0 _7 N. T5 f, _: Q
( _- w4 x( e! m( b3 P8 x;;if [trade-record-one-len] of myself > 3
  ^$ e8 [" F6 f* w+ f4 Z
update-neighbor-total& |$ S# k4 G5 j  `) ^$ z
;;
更新邻居节点的数目,在此进行
6 b( a% _4 t" G( Nlet i 39 J* z) {* N/ {8 y* @- Q4 n. I7 F0 F5 B
let sum-time 0
1 O; r  y! N6 C7 y$ Lwhile[i < [trade-record-one-len] of myself]5 U0 y5 ~+ S' u3 j3 U  K
[% N- x0 F( g* g, ~7 x4 k1 P. O: q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 R  @* S: b9 i1 W5 C, c# Yset i
0 p, j5 R, Z1 y7 }" f3 r( i + 1)
7 i: X0 x( q2 z& o" D1 S0 p- v
]
9 Y  G" i2 T. y0 ]/ Ulet j 3- a: I: s- @  T, N  l  R. k( f
let sum-money 0
$ ^$ S& b. G% ?1 l; zwhile[j < [trade-record-one-len] of myself]
# r' h; W# k3 i* L[( c6 H6 y- u# H7 `+ y
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): u* _6 D, g9 F' v. I
set j: D5 o, M. E* w, M& |2 P
( j + 1)
" ?: c$ ?6 w% N* {6 |6 {5 s. j5 ~% k
]
1 ^( m/ F# n" k  ^* [* E& Vlet k 3
5 d; [4 b7 f" t2 v3 Ilet power 0
" B! S5 H" c" K7 N$ @let local 0. v8 A6 y1 Y& P  ?
while [k <[trade-record-one-len] of myself]
8 s) k6 Z" _* q[
) o: i: R" p/ M3 eset 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) 2 k4 A' W! }" K) g2 E
set k (k + 1)
/ M( S; A3 b/ \; a; C" v: j]. ^- @- @% W! v9 B
set [local-reputation] of myself (local)1 O0 Y: P6 Q5 ~+ m7 ~; n
end
# o. S2 L% N# g/ q' ~# G
5 S# @) n/ \+ B$ d7 b: @0 ]1 s8 t6 Jto update-neighbor-total4 P& ?9 v6 X* ~* s0 R
/ D$ `7 y5 X+ |6 W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ T' ]1 z) e2 T0 c
( L  _% v, Q  A* a# A

: \8 Z1 E# t# [/ r# X9 P2 E5 jend
7 G9 D& z5 A, Y2 @0 ?$ x1 {' ^6 p; @, B9 ^0 w
to update-credibility-ijl - x  b% |4 X5 f) E. \7 c& ^

/ `7 q1 i3 a( [; }3 }8 N: z( e;;
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。
- }/ l  ?* x" B( g. d& c" d2 P9 E' flet l 0: N6 J; S0 Y% y* W: f5 M2 Y
while[ l < people ]
0 F3 [$ w( d$ u8 k9 m;;
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
' h/ U4 J  z1 `& _[5 H! e2 r0 R  V* z7 R2 K' {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): V/ e) V9 Z9 j
if (trade-record-one-j-l-len > 3)/ f# ?) M8 C% d+ P9 u3 X+ Y! w! i: R
[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
# g: x3 B+ O3 B$ ^8 A6 Alet i 3
0 ]9 k: X3 L0 p, b% p! H6 jlet sum-time 0
2 k' ?0 ^; `+ f" b- ?- i. g" c4 Vwhile[i < trade-record-one-len]
: b! O6 M  M" Z6 d( ?9 l  c[3 v  O7 B  f0 b7 o% c: k: D1 ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' L  j  G5 @9 h8 w3 z: Q2 w
set i" O% x3 M9 x. L# y* s: ]
( i + 1)
. D7 |/ y* Z; \! C& }  {7 }
]
/ }3 P  n" ]1 J( M9 s1 u! g$ Hlet credibility-i-j-l 0) Q- f( F+ X- a: _& e9 u
;;i
评价(jjl的评价)6 u( j  \6 Y4 q) ^% u9 _
let j 39 [# \0 ?# }  n. @, m4 E7 o  X6 \
let k 4
6 X" m: D8 ]" x2 l6 Gwhile[j < trade-record-one-len]4 d, H1 N" f0 Q. q0 j
[
4 j4 P- B7 a6 K+ X0 }: A2 l! uwhile [((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; m) v2 n0 P: K# T. E
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)" S) ^8 s; x) C6 n0 r8 {0 Y
set j
6 B4 w2 |0 p$ o. x  V) E  }( j + 1)
9 ?( B* G: E  q: {! ]. p+ W4 A
]6 r8 y3 @+ |4 D4 v
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 ))' Z& ]: A3 h2 o
+ G4 e2 L7 S6 ?: e

; ~' _- t3 V8 R% X6 G) tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, a4 s" S$ M! M, |8 G;;
及时更新il的评价质量的评价; n- c# G5 |/ H- c. ?/ ~* F3 L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 {, A+ w# o7 y+ M. K' p3 D2 _8 ~
set l (l + 1)* D; o" F+ l" @8 M6 `8 }
]
% j4 [$ T% |* W! e6 A3 eend
) C* I4 Z4 z7 H) F$ u, z3 e- C  R) w( I; s8 s
to update-credibility-list
3 w7 I5 ~" f7 w" {6 P( Slet i 0
6 J+ [% B. q4 s2 Wwhile[i < people]
/ [9 Q, X  e" A) u  t. e( }[
6 d; b% O3 ]6 _. F9 Ylet j 0
: a1 J5 S3 s$ k% M# J& glet note 0! i. h: Q& g" G( g
let k 0
. o3 U/ ^+ K: \0 C7 f9 S) f;;
计作出过评价的邻居节点的数目, J8 U( g5 p+ _& S5 T6 z- b6 _( z' U# `
while[j < people]
6 U' a7 `& F" b[
$ h& j6 D' c8 Y: E7 |6 `6 S4 uif (item j( [credibility] of turtle (i + 1)) != -1)+ H- i: E5 A- g% ?4 g- ^  F
;;
判断是否给本turtle的评价质量做出过评价的节点
; N1 y  i# Y  @5 I& L$ x( z, z) \[set note (note + item j ([credibility]of turtle (i + 1))); E) ]7 z% n% y. t0 K+ y6 s
;;*(exp (-(people - 2)))/(people - 2))]

/ J; q0 ?3 b& t+ X: v% g# [/ o7 Kset k (k + 1)7 n# J! d  g2 u  s* `. l$ F! }& A, m
]& y/ W5 h6 x  G. x
set j (j + 1)( G, J+ v8 j8 V# e1 }# a
]
# j% w2 U8 S: \6 y4 f! i8 @! i! zset note (note *(exp (- (1 / k)))/ k)* M2 V3 k) O" z( ]5 l/ Q* R
set credibility-list (replace-item i credibility-list note)" ]: t$ t: \2 D- J6 Q  b& n$ t
set i (i + 1)5 c5 l6 t, Y# u/ f0 l
]
: |; Y: [  o: xend
; `- i/ W' v+ f# P; Z( r8 |. M( i; N% `# `/ U
to update-global-reputation-list
1 C6 c5 b7 T3 L( T* c& \. q% Ylet j 0
7 {, \9 v& J0 |4 U. {. V" H: i8 |while[j < people]7 d9 U/ v! r0 [& J
[$ @  _, T5 a! T: Q' ]: \
let new 0
9 @7 r/ C0 y4 U; F) X$ o! Z;;
暂存新的一个全局声誉
+ g, f5 ?. P' `" P) L0 s1 Jlet i 00 o7 ?, u6 q# x
let sum-money 06 Q) d  X" z; k3 ?/ Q1 `
let credibility-money 06 U0 ]' m3 D$ [& ^( @
while [i < people]
" {' u- R& W/ I! a) S[0 I0 ]9 F$ f: |( j  ~8 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  l* ^+ i8 ]( p" o9 `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) v" u' Y8 k4 T- A; L; s/ E
set i (i + 1)8 r. g# Y8 F6 D" s6 U( a
]
8 \: b' H$ w3 Ylet k 08 s& I- B! [9 v- [
let new1 0
' z8 i: u' \" j# I* Twhile [k < people]  L4 f" x$ E" r: c" J
[
0 ?  d6 O3 v  O! L% Dset 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)0 u5 r2 ?7 D9 \, _" ]
set k (k + 1)/ g1 c; U% r! k4 n' m
]$ K8 v+ \9 E7 b. d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 O+ _) H5 G3 d# K9 i8 [1 m
set global-reputation-list (replace-item j global-reputation-list new)
, ^' H5 E: R2 K; F& p  Y, kset j (j + 1)) p0 a' m: n* E9 I& B5 y
]
* F" D4 `6 f* ^end- q+ O3 ~3 @( }* E0 L
- ?9 g- b- K" V6 s0 ]

; M9 q" T6 e6 F3 g! Q
  J2 L' x1 f4 ~3 U6 Q; r4 p% Ato get-color
! k' f8 i+ A) \9 i' a9 l; Q7 M1 R1 I1 Y+ E
set color blue
- Y1 A: W6 I0 g1 {5 P7 u
end( `- T8 v6 t2 ?; L
' {7 v+ [$ L2 ^1 ]+ D
to poll-class
1 i" G0 U' u7 }6 o3 D  ~end
4 J: I. F4 ^9 A7 }' J
* @4 B& g& d3 C2 x2 V$ Pto setup-plot1
; a: F- ?" {% t( p
+ Q6 X3 F' ?  H3 ]3 l. T( iset-current-plot "Trends-of-Local-reputation"

3 B1 s; G" K- C2 x* H, L1 |! }9 |$ r7 s" H) i
set-plot-x-range 0 xmax
( C, K2 \. O1 L: c( Y- w

6 b$ P. P8 q/ @9 |; Y: r* k6 F0 Lset-plot-y-range 0.0 ymax
" o' w; F5 o$ p& y; R
end
& r+ M6 g! `1 _7 t: M
: k% [4 s* I: U# V9 Kto setup-plot2+ A7 q4 |) G9 {' e, [& ~2 T: G
9 B# @* V. @% X! L
set-current-plot "Trends-of-global-reputation"
' ~3 D" r5 m# |" d
2 S7 R2 S# D0 j- I
set-plot-x-range 0 xmax

, g3 j* l+ A+ z- l9 v. e- G5 I0 z
6 |  r6 Q8 s$ nset-plot-y-range 0.0 ymax
9 a+ t3 m+ V+ R* r; W1 R
end$ q; a: s! ]1 }" H, a

* |$ q& ~2 w. d/ t0 O* e# Z0 Yto setup-plot3. v$ o' a) w0 [" c* t* T4 b

( d- U+ D+ E1 \' R% s2 ?set-current-plot "Trends-of-credibility"

, K! X: l6 K5 z% {4 H( q/ N) C) s, A
set-plot-x-range 0 xmax

. I; h6 H) R" K  E: m" w( E& o2 R
2 E) Q+ S; F& k3 y$ Mset-plot-y-range 0.0 ymax

$ Y) E; _! E) S2 i9 @6 Mend
: \5 Z1 s: O( q. t+ r9 W1 J, ?4 O5 n* @( n: `
to do-plots
: y6 @7 g# J+ Qset-current-plot "Trends-of-Local-reputation"  ~- Z% a+ j: k. C5 i; N/ w
set-current-plot-pen "Honest service"
9 T7 G8 g7 H/ nend
# U% C, A; e4 Z; U2 u8 A2 n& Y- s$ w
4 U' v+ L! {3 o8 C/ n; N[ 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., u! p9 c$ |+ X6 e. i

, \0 t3 o+ r4 f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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