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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:6 r5 ~& e1 o7 L- A
to do-business 0 ~# E* e5 ?9 Z" z4 P( |/ z
rt random 3607 k1 V3 C: C7 U% K4 w
fd 1
) p8 Y' J+ N4 ^( f% T ifelse(other turtles-here != nobody)[3 ~% Z" u4 H- B* j4 K( G1 i2 c' G$ M
   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.
9 h/ x# I' C/ h" M- H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 l! G1 P) H# v. a8 P( C: r! j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 E, B# J$ K) c* Y   set [trade-record-one-len] of self length [trade-record-one] of self3 C' V- u+ x& d) R1 [' E' m
   set trade-record-current( list (timer) (random money-upper-limit))
$ _6 f4 r! b, ^( g3 @$ a6 [
. h# F0 b4 Q5 f0 z+ P3 Q问题的提示如下:3 K% w: U- W$ F
6 m" J6 k' V1 p+ U3 V
error while turtle 50 running OF in procedure DO-BUSINESS
6 G0 f) X! ?1 \5 g0 I8 w  called by procedure GO, h9 j& c2 N2 h6 l& T8 ?+ o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 p! }. _5 o% x# W! L3 k
(halted running of go)
/ i3 e5 [$ b1 H1 z- a) M6 o
/ \2 a& j& }7 A% t# [4 o, V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~~1 b1 z/ X4 E) [. m. z4 z6 ]
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9 ~3 Z! S: g- d' Y, f! {
globals[
! T  a4 n* H% m% q. Z& O; |! Uxmax9 b  O8 _) Q' ~/ U) V: \
ymax
) a" o$ I7 t, S+ l! L4 S1 w, kglobal-reputation-list
& f! N$ ?. w+ @; K0 e. Y  a. W% s# J2 R7 l& i7 t6 ]  O
;;
每一个turtle的全局声誉都存在此LIST* n3 h3 r4 C' Y: c+ c
credibility-list
) u: d# r/ h: K( @) u; [' q;;
每一个turtle的评价可信度
& N8 V. P# H: o$ c3 Whonest-service
1 ?% Q7 J4 t' Y4 Runhonest-service
* N" B" N* E4 k* x9 ^oscillation
* F. }8 \9 N" x( X( a) p) vrand-dynamic- q  }  D$ m4 G! l
]3 G" U* R5 y+ c

. R4 r3 a, h# Q3 d. Bturtles-own[
0 x( ?/ q% T& Dtrade-record-all
& ~$ W# U* B, c- `* \- G0 u;;a list of lists,
trade-record-one组成0 K0 T2 l7 L. m* L1 D
trade-record-one
( z% W( o( S- \& X1 c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, t/ w$ }3 H/ [- c

. I9 Y; N% l4 G* ?1 T5 X5 };;[
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]]  ~0 w! @, l( b5 l/ E0 o
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]' ?0 ^1 a' H( U( Z# t; C+ k4 s6 {8 r
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list- e. P, K  Z4 U5 L! S6 d3 `
neighbor-total6 `0 X/ Z, J  ?1 ?
;;
记录该turtle的邻居节点的数目
+ v( l" I( c. a; V3 y. E% J' L' Rtrade-time
! C$ E4 b. q2 u" N;;
当前发生交易的turtle的交易时间
# `' s) W" E# f7 @  H8 Kappraise-give
# ]7 f* M! J5 ^6 q* p;;
当前发生交易时给出的评价
7 R) M- ?. m; @+ t; }! i+ vappraise-receive
8 v- W9 t; g/ w  E7 J" I;;
当前发生交易时收到的评价
& j* L/ |7 M# ^+ F& o& Y0 xappraise-time
9 \6 e+ P  U! E( B* a) m/ d: b;;
当前发生交易时的评价时间
: v& E+ y2 A& V7 B' Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 |  q, }. R2 Z. itrade-times-total0 O6 q! J4 q/ a9 R( R
;;
与当前turtle的交易总次数
4 L! }* C5 S9 ]2 O& P* L8 Ztrade-money-total! s- f. ?+ a! H8 C1 P4 t  D' F$ c
;;
与当前turtle的交易总金额) u8 b* A, I+ k) e7 \" U* [
local-reputation6 w& n" q1 M" b7 x+ v* ^
global-reputation
! [/ u8 Q1 K! p9 u  o, j% icredibility
! d. R1 [# A! O+ q) S" E8 y;;
评价可信度,每次交易后都需要更新" T; ~( p% I( h  {; f
credibility-all/ X0 ]/ n5 c# d% j. r" n' 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
+ d/ L5 L( I3 _  E( Q0 z4 s3 G- @' T7 e- z# N
;;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
8 v* ?$ H* G& z8 Ucredibility-one% @9 `4 o" g) I5 D2 N$ K
;;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; A2 ^% F& m# X8 f  v3 V) g" [
global-proportion
8 b1 G& f* P+ _: \- xcustomer
& X/ m) H% p" q" e. jcustomer-no
; r4 a. \; N) htrust-ok1 d& A) v  ~8 i) w: l
trade-record-one-len;;trade-record-one的长度
9 L1 ?, c3 m" o]
; {" I  G( g5 n) X" r, U) ~% o: _, R* B+ B( N/ Z" V
;;setup procedure9 V6 g2 K3 N" [# o$ o9 O5 b

  b0 o& c- r1 Hto setup
1 d8 [) L* i+ D. q
3 U3 \8 A7 |) i) K8 Z. ^ca

6 k5 i; M* {0 [8 X- F) j% y% C, T
initialize-settings
6 x  `3 D9 P+ Q0 ]4 k

$ t0 n/ a- d- S. e/ [crt people [setup-turtles]
/ s. `3 B4 i. M/ c6 J4 K2 \
  M# k) I% L4 o
reset-timer
" Z3 F+ {/ u0 F4 A8 }
6 S% A- ?, M# N8 V8 Q! h2 P
poll-class

+ I! G7 B; d- x8 n3 b4 V
9 a0 I+ Y- M2 y$ ysetup-plots
. u# m( b% d) x+ l% e
: t# t' g- Y% |& j; T' Y
do-plots

! L; k. V1 Z' o2 Dend
4 L4 `. D2 B! _7 Y, U3 ^
+ G  x1 I3 P: ~. _8 eto initialize-settings. _" A+ R6 C5 @# U: Z

9 X: X5 R0 [1 U4 K  e" F% Fset global-reputation-list []

. B8 P8 x! L$ a5 ]( r: ^
8 E' O' L9 T" q2 t$ d  }set credibility-list n-values people [0.5]
) G! E9 j6 e3 b0 M: o
/ x' u& X5 p/ F) {
set honest-service 0

- ~0 \/ |1 s6 h  U. C8 A1 K/ N
* x& x( m! D6 ^, I3 `+ ?8 V0 Oset unhonest-service 0
7 U; v) \5 u' u
/ q4 l6 k+ x- b+ ^' _
set oscillation 0

  H. F' y: [# f
) l5 g% R* R' @set rand-dynamic 0

. d& f' O5 b& N& o9 G/ y6 ]; }end' ^) i- p- ^4 F6 D

% _' Y9 k9 j% u4 G. cto setup-turtles 2 `! H- s3 `+ E7 @6 p7 @$ k
set shape "person"
1 d& ~5 [  e% i4 Zsetxy random-xcor random-ycor/ j( _: ^' f/ E$ k& J
set trade-record-one []
0 a" W0 ~4 k8 ^' {

- B8 y0 _6 O# F) p0 Kset trade-record-all n-values people [(list (? + 1) 0 0)] 3 r4 i( d; M& @( z! R: P

9 G/ g( v: Y- `  @set trade-record-current []# [/ D* G1 G8 l. S( K- |
set credibility-receive []- c2 P8 |! k. p* o% s5 i2 j
set local-reputation 0.5$ @8 z# ]7 b7 @8 t. N' I" C2 {" S
set neighbor-total 0# I$ D/ U* J( m
set trade-times-total 0; g1 w1 @/ a6 y
set trade-money-total 0
1 `+ \0 Z' r; w6 W9 iset customer nobody
0 r. V2 [$ J- L* F& nset credibility-all n-values people [creat-credibility]
2 `1 S2 ]% F8 g: o+ S( n3 Nset credibility n-values people [-1]! W9 a2 _8 G% b# a! |: g
get-color9 H! H* a7 ~; a( L' j9 |/ ]  m

/ r) R) g0 q! y4 o7 H" cend
. G/ B; Y$ q1 B4 p" a  B! h! `+ A7 R: c
to-report creat-credibility! n, j. E; q7 e8 Z* K8 i
report n-values people [0.5]
& {( E/ t+ m. [# k8 t9 Aend( g/ i8 c2 i# x
" T8 D1 V. A6 y; z  H5 U
to setup-plots
8 ], r; h# ]8 ^
% d  G- k5 D2 h: R) uset xmax 30

5 o4 O' ]; j1 p3 g8 S" W
. Y6 v. p' s& W6 H  ]set ymax 1.0

: P& {8 P! [" n( C$ H
4 G7 f; `% K4 V3 V' A3 j: G5 n; eclear-all-plots
% P7 b, x" g2 k9 \2 n5 ~8 N2 e
7 ?& f0 e* B! U+ X% q" u! }
setup-plot1

1 x$ z3 i+ F: ?" f" \1 r4 c$ j/ \3 _+ }
setup-plot2
# f! u9 Z6 p5 j2 A, L) H

# v7 H2 W/ T* b6 ?* |: q0 Bsetup-plot3

1 Y1 A& i5 ~  y4 w8 _( [+ L: `9 a/ Nend
' k6 h5 [* X; Y$ b- r% b* \/ ]; d! b/ b2 g7 P
;;run time procedures4 i1 t. P4 f( u. \  @

" w) C9 l5 N9 k4 \2 ?  Sto go
) f* F+ B  H4 [% k( ?9 `- n$ m* B
ask turtles [do-business]

- b6 L& O6 H$ l- X- ]- zend
2 Z0 ^4 i  x: Q( ?" w( v
# x4 M7 b# T, ?* C0 o6 J/ ^0 }; C3 Fto do-business
+ |& q4 c: Q; E" V2 f; K5 a, u

& g; [: z5 N% c- T7 b7 i8 v/ l
$ F" e7 a# W9 e: Y" Qrt random 360
* U0 y- E" K: o& k4 ~6 _9 M

; c6 ~+ a. H1 Z5 n+ Yfd 1

* r" R) p$ I# Z
& N; j) l3 C; T" ?0 L4 `ifelse(other turtles-here != nobody)[

0 H2 |* U/ Y* |/ O  R& E( w! O$ S* U7 u  ^' q
set customer one-of other turtles-here

: T8 B% w. Y4 y* i2 E
" G! T2 Y( l8 J9 C5 H;; set [customer] of customer myself

4 p7 \! N0 _8 g& g
  a" Q' r9 _& y2 s8 p- k0 Tset [trade-record-one] of self item (([who] of customer) - 1)9 f' L  a* A) p( b6 X+ l5 s8 y0 Z
[trade-record-all]of self9 S# B5 K. N/ w( b: L  i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& a& z5 J. |/ a9 ]! N8 `

7 L, a, q2 d+ |6 x" I' z1 W# A6 Cset [trade-record-one] of customer item (([who] of self) - 1)
6 S, R3 k6 d9 I/ h$ D! }/ \7 O[trade-record-all]of customer
" \& p3 Z/ ?+ a' L1 a9 H) C
% P" y' ?' h/ I& z. ]! D) v) q5 ]
set [trade-record-one-len] of self length [trade-record-one] of self

, G' E9 B. D7 k  M4 f
  o- H4 R' Z4 e8 p" }: U. Z% ?set trade-record-current( list (timer) (random money-upper-limit))
8 ^6 b" x2 M, l! R! N
* L( Z! P9 U; ?% S. q7 ~) L
ask self [do-trust]9 F1 w9 g: y% v& h3 O5 E2 R
;;
先求ij的信任度& i/ [  O! l# a7 a
0 I  v" O! J9 r8 q$ N5 G
if ([trust-ok] of self)5 n2 g3 ~4 Y0 \6 K. Q& v# y# E
;;
根据ij的信任度来决定是否与j进行交易[
+ G' Z+ E  ~2 O$ v9 K9 Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 G' a' Z1 }% k
- `' _  g, i# R2 Z% N: V$ W, n
[
# r5 V( \! E0 e5 R5 y9 |: E7 K+ v8 Q6 `
9 |) Z/ c2 J! U2 e
do-trade
. P" K( K' P8 T

  [  R4 t) ?" `2 u5 o% v  H! a% Lupdate-credibility-ijl
4 B& O* G  P7 G1 h- _
" p6 g$ L5 |) J% X" q) x4 t
update-credibility-list
1 o$ e" l' w5 ?( H

; N6 t! l- C3 w% S8 r8 m; G2 k5 U! r# C! z( L
update-global-reputation-list

! P1 p4 [! m$ e8 M
' H$ G7 b, U% F* q; [2 dpoll-class
6 z0 V5 e3 x4 U/ ]3 t# f% E$ Y1 t

0 r  r, ]% ^0 H, \/ u! _+ L) dget-color

+ d8 U, g9 e3 J7 C: D: n5 Q7 l3 Y3 M* L- Y% I" W
]]
% s1 K2 J$ [$ h" P# g; N2 f. u3 e4 }; u- o: Y/ L* G$ |
;;
如果所得的信任度满足条件,则进行交易
' i" ^8 `7 G, }8 e' I& k1 L
: X' t/ X4 P8 e$ `: g9 a0 b: T[

$ T' q9 I& q) `) Y8 ?- L% l
( \* k7 p) Y- Q1 q7 i( hrt random 360
1 w8 n. M2 z, m) @% Z6 F: V

- f: @: q: h8 i7 q) ufd 1

, B! A, J. F- B( ?5 Z1 ]6 ~: F& i( y( L1 e- j4 U. o
]
3 D, z7 `$ m9 z# o! `" A
) o9 s, z: L$ F5 @6 H/ d
end

- o1 u9 P; h- E: U* }; C% }
6 ?$ e' N3 S+ Tto do-trust
3 p& X$ K3 [5 I. D: Q0 m  J8 }set trust-ok False
1 n1 [% S' d6 Z) U# A7 P7 q. J* d! p8 j- d4 z9 C
$ Z9 Z- g# h7 |' Y$ w
let max-trade-times 0
4 _  t/ I9 O) w3 [' n' Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 u! V  B2 f: H7 ~5 X. }
let max-trade-money 03 j. @' v; _+ a- J, g+ W: y5 }5 w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" d# X6 L( N% m8 {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& s' ~! K$ f1 z: S) R
/ e0 [; T& p8 D) x

1 {/ w2 h5 E, |get-global-proportion" @6 V8 `/ x( u  X
let trust-value
. i2 N% P; ~) S! e; H) F9 e5 Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# r( [2 k$ o# z* D, }8 U+ ^( A
if(trust-value > trade-trust-value)
" ^* i7 Z! z$ w( _/ L: n$ ~/ O# `[set trust-ok true]
- N7 N# }# a% V, ?4 }2 K) Gend6 T6 J4 ]# C8 ]6 ]* ^: U- |

" Y- y! P! E( S- eto get-global-proportion9 f) }& \5 J7 n% c% @$ {! l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( v/ y- @2 l" X[set global-proportion 0]: o2 o& O+ O% [. Q1 J- V
[let i 0; F% N$ O. p( _# k* J* \. o
let sum-money 0
: W3 ]& w' Z4 r) T/ L9 _while[ i < people]
/ E1 G' Y3 `: s/ C. P1 P3 F$ z[
: F; C0 D+ A7 _- A, g1 |if( length (item i
1 B/ u7 t& J! l1 E" z5 d5 k[trade-record-all] of customer) > 3 )
1 }3 l( |9 r1 g  O! T& i, k) T
[) O/ ^& c! q3 V9 O, K9 @3 L# W- r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! g( a, a+ H! l% S/ r]
* R& O% i/ p1 s; h# Z7 L]
; j  M5 l0 x* |* K2 W  }let j 02 A% K: ]0 v/ x) K* [& m
let note 0
$ o1 H) ?) `& y6 }2 E9 U- kwhile[ j < people]
1 a. j" F& |9 z* N6 U/ k3 T[
( G6 B2 Q, ]; y7 p" _( I# {, w2 Vif( length (item i
3 I  O2 F. s$ y( \+ M8 A[trade-record-all] of customer) > 3 )

5 B3 y5 O& n& C! z[1 K! A) S# R# ?3 W9 V
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 T% ]$ q0 ]& ~& f+ U" W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 d/ b+ k. N$ |; [* o1 E2 b! Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! V+ K6 A9 n$ A7 l) ?$ k3 y]2 e$ V5 f" l/ h- b$ ^
]
* l8 Y1 G  l4 o( n1 `set global-proportion note
2 f2 |# Z0 s4 r! A) F! U% r, n]
4 [8 d( V2 b* }5 Y3 x0 M2 h6 Jend$ C# G* f3 {3 e! n. ^; y
5 @* ^# ^! Q9 I5 ^' }; T
to do-trade: o; B. s6 ~. k  s
;;
这个过程实际上是给双方作出评价的过程$ o, A5 Q2 ^* ~( ]. r' E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: i( [0 x5 P# t5 `1 @' W: B. Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ Y2 R2 j: u" J( v, }: ^set trade-record-current lput(timer) trade-record-current
1 _% l- g4 A: Q3 ~: g: |. c7 l;;
评价时间
4 i9 U; e% T$ z9 C! A/ |" b3 V  task myself [
" W- N; N; `* y! X" N8 iupdate-local-reputation# ~1 W! V) o$ M: N
set trade-record-current lput([local-reputation] of myself) trade-record-current# f( l1 H9 \$ ^
]1 }# S$ v8 [: z0 o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: a5 C% g# E1 ^) h6 s' h5 n
;;
将此次交易的记录加入到trade-record-one. r8 E; G; E! v+ V0 c1 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- S  I0 |& C1 d, f: a2 xlet note (item 2 trade-record-current )
3 ?" s. O( v# Mset trade-record-current
. i+ g! Q  y! X& @" ?(replace-item 2 trade-record-current (item 3 trade-record-current))

/ W# a- C6 N: w/ Kset trade-record-current
( U+ B5 I5 ?" e5 G5 Z7 R* b. ?1 X(replace-item 3 trade-record-current note)
& k+ Q2 a" S+ C/ K- D5 \, W1 S" N. Q0 E* }$ Z, ~7 V4 R: c7 f2 ]

  a* u/ y" E. z% Fask customer [
2 d' Q3 l2 z- X2 |1 u  M; ]" xupdate-local-reputation
9 r5 O/ g: L# ?2 ], [0 N1 Pset trade-record-current4 p% A' T, t# w4 p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ P  d8 r% ~" N2 x8 F
]
8 @) s6 E6 ~7 `* P  G! H- s1 V7 ]: \: X0 x: z8 T

' X: Q! t; g9 B$ M- b+ X5 sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: G: {, k- u$ t; w* J* Z7 V
" x: g( d, {4 s$ G( X  M: I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( d$ D# G! S, |;;
将此次交易的记录加入到customertrade-record-all
; k) l! I: E( e+ v0 S" C; Jend
" O: _6 e8 b! p: f; Q; F; z: |( `$ s2 F- `. z
to update-local-reputation
$ I1 N- z2 _9 E1 R' Q6 j( Hset [trade-record-one-len] of myself length [trade-record-one] of myself
& U" M+ {1 U- g
6 p: `2 p$ p% b* D, b; @- \! H2 `
;;if [trade-record-one-len] of myself > 3
5 x( o% ^8 D3 u" H' c
update-neighbor-total8 |+ f: Z% S# }% m* g% B) N
;;
更新邻居节点的数目,在此进行9 Y2 Y" X( n+ V/ r8 R
let i 3
* Z% R5 a8 }& J% ]let sum-time 0
5 R: Z8 [$ w3 xwhile[i < [trade-record-one-len] of myself]$ U3 x4 C: B1 `9 i* I8 B  c
[, Z) p9 O# B4 D; R7 p2 l; E# ]% O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" X3 U% K3 a5 g0 x' ~set i
5 C0 J7 M2 Q; j+ c8 t# _/ ^  ]9 ]' k( i + 1)
7 N' R! @/ ^) {- m
]
7 t$ x2 @! S9 {5 H# Ylet j 3# y) X2 e8 q6 {
let sum-money 0/ l; K: S$ y7 z1 Y8 p2 }
while[j < [trade-record-one-len] of myself]
4 v7 k5 `  g6 m$ n$ P* `[
: C+ [- J9 r7 H! uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)+ F# ^& e& g% O$ |
set j( ]' w+ ?) L5 Z7 X; S7 n
( j + 1)
/ g- I! y( A, s. P+ S/ |
]5 a: d3 J, R2 R; B  z; k, F$ Z
let k 3; t1 {7 D7 g, t
let power 0! Q! V& D3 v: k
let local 04 P; g" K( i' V5 d: V
while [k <[trade-record-one-len] of myself]
( ^7 L- X8 P  |* ?8 M9 R5 M- ?[
8 b$ P5 M3 J6 |/ \; e) Yset 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) & Z) x0 Y$ ~, A- T/ r
set k (k + 1)
" J4 L' M7 ], h1 j& l& {0 i]) U5 a9 |3 P  O/ `9 h
set [local-reputation] of myself (local)
% T7 P; x$ C) J# zend! n  |" `% v. H! N6 G

- o7 L2 N) {$ Tto update-neighbor-total4 r* Z2 D& L! e5 l8 h! H# v: b
. l' y' ~1 z) e8 B& k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 }' W9 I7 t5 ]/ E- V! y( _6 y, D9 ?& Y  `2 h: n" H# P6 u

9 }- N/ c, Y' D. f4 ^5 \/ _: Jend
- D$ L: z* V. g3 ]: [
- d. @9 }+ s8 }8 U  Pto update-credibility-ijl
$ Q+ v4 ]4 y6 o/ b
# Z9 }5 K" Y9 e8 {( 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。( k; B2 j0 F% E; M6 X$ N- |) z
let l 08 G5 p' X! `& [5 N3 E
while[ l < people ]
3 s. z3 Z+ M+ ^5 q6 B' K9 K;;
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
, M, i8 o* o' n% a[9 _/ O+ y7 e# ~  S
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. Q+ b2 u3 Q  g: A( p* k9 n( h8 Tif (trade-record-one-j-l-len > 3)
4 [, |. m4 `& \8 e1 @[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
) Y& L. n" [: G! i& hlet i 3" G! Q# s4 Z1 t8 N
let sum-time 0
5 Z/ d1 g; l- [1 H- G7 y/ xwhile[i < trade-record-one-len]. b  z$ y+ `# t3 S  N1 U' }
[
; _2 S6 K" y9 ^7 D  l! Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ g3 N6 O, ?7 L* z/ F1 N7 a* oset i
8 o' d, Y+ C; e( i + 1)
. |, Q+ C" R7 e$ D9 U* ]6 G! G
]
; \+ p: F6 ~5 A2 B8 ulet credibility-i-j-l 0
* H% g" Q! H' ?" [;;i
评价(jjl的评价)
) T% B1 g7 B6 B) ]8 mlet j 3
& n2 \( p; w* |let k 4. M9 O2 t* h5 u: |+ W  {
while[j < trade-record-one-len]- h/ r; l9 x" S0 K" P5 O4 k" G+ s( [$ t
[, N$ q, u9 g) _" l* o. O. F5 f
while [((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* E$ X' J+ `; h- a* H/ L
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): r; m5 w1 z. B# d! h) j, O8 ?
set j
* T* L  }# {( i/ {6 u( |/ d8 |( j + 1)

- z7 R' Q+ e7 o/ @1 c- ?]
" q4 V! C$ R7 s7 h( ^' vset [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 ))1 J* k( E+ N: T
0 W: d4 }* H$ O, Z
  m+ i$ t' h/ u; g5 ^8 X2 O& E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 \) D9 b1 f0 a# a;;
及时更新il的评价质量的评价' ?* R5 P- Y  U* O% r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ g% R! p' T; n. m: O6 J, Sset l (l + 1): Y, q( @* h4 t( _: B, S
]( K$ m# G/ F, b/ f' T# t2 ~0 k
end
! R. X7 v- b5 w$ X% }' G: |
# T3 z7 q2 H- j9 p* Hto update-credibility-list2 `$ Q) l6 M& n( h7 |0 y
let i 0
& W' l* }, Q: ], d4 D2 p; Z) {while[i < people]
: Z( P$ K, L( C7 y9 E/ Z1 y0 H& P8 e[8 d" i4 J& k$ \- e
let j 0
1 G$ H1 l! o. P4 C) _4 _! Nlet note 0
/ S$ @& b) n' @. y  Wlet k 00 n: m8 D: P4 y5 w
;;
计作出过评价的邻居节点的数目
- e. F' {; a- G/ \$ w, w9 uwhile[j < people]
+ X  t" X: x  u0 }4 j" p0 ~[
5 \7 r4 l2 r1 |) [if (item j( [credibility] of turtle (i + 1)) != -1)+ B& o) h# F1 n
;;
判断是否给本turtle的评价质量做出过评价的节点
5 C  s1 I4 e2 h/ v[set note (note + item j ([credibility]of turtle (i + 1)))/ a$ t( J! G' K3 O* x
;;*(exp (-(people - 2)))/(people - 2))]
: d  q# m: @( `, B1 z6 ~7 e
set k (k + 1)
7 B3 c2 V. X$ @& B" U+ s5 z]
" M: [! j( X# Nset j (j + 1)7 V1 M# p( e% n/ @& W: L
]3 Q  |& G8 |8 L
set note (note *(exp (- (1 / k)))/ k). Q# v) E. y0 J9 V
set credibility-list (replace-item i credibility-list note)9 |8 _9 F; f8 F# c: a; M& a/ l
set i (i + 1)
! _" N0 M) i1 m9 H, n]
/ Q! X9 Y6 N+ x7 H9 Fend
+ R6 v) W* {3 o9 @0 y; Q9 `& w8 K# f
7 m8 A* K; _5 |9 m! @* I5 rto update-global-reputation-list1 j  ^8 T- s- q6 ?
let j 0
0 S% V: P3 g6 D1 P  c& }1 R+ Cwhile[j < people]
1 S0 R6 V$ Z+ C: X# W. z. C[
+ F% [6 p* O$ _let new 0
/ V% I" q. T1 ~;;
暂存新的一个全局声誉
. i( ^1 |9 K- \- m5 e' _, _let i 09 H# c& T& t% V! {8 V3 T
let sum-money 0/ D/ o: }; e: [% `3 f) H6 [
let credibility-money 03 \7 t2 h5 g2 ?( J5 m8 y+ N  I
while [i < people]
8 w7 a% Z: Q4 j) P5 m9 R[
3 j' @3 ~7 a9 C8 f" g. zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  ?* B  l& k; N. z- A- x  o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: K! z. U( q' k7 X2 l3 r  m% Qset i (i + 1)' h0 {4 b- {0 l8 m# d  I% Q
]0 e1 n  M/ P' \0 O& T' s, o9 E
let k 0# J/ ~& f/ V, T2 M4 n
let new1 09 x& b' w' z6 _0 U. i
while [k < people]+ h! {( S) m# N# f: a' C
[9 m; ^6 l; C6 X0 s# G
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)9 [. n. w- l3 N& m: ], K. O# s
set k (k + 1)
5 O9 o! d0 {: @* \# t. ]) b]1 I- L3 r. O( D' Y; b1 W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " C4 K8 C9 [& [
set global-reputation-list (replace-item j global-reputation-list new)0 T& n  A5 t/ C4 @
set j (j + 1)8 z& {, M6 S" y* f9 t$ I( d- k
]
& d: W$ l# D* k2 Qend6 n; I3 {) J7 @  v* V# k/ h
  ~! H. g3 Q% q: W: a' |! U& {

+ _2 V: _7 S% C4 W  E
4 E& \6 ~3 N6 w* Yto get-color
: o7 g+ U0 e3 j- f; d: j
& o$ T$ [2 d) g. @* ?9 kset color blue
/ w- S# `: n6 |8 r
end
5 O4 }8 }# T! _0 j5 P8 r! o( B: O, q& v! q7 E
to poll-class
6 E% L; V8 T0 h) w; V1 Q7 pend
/ A/ F5 m5 U+ n
  H8 y! s! y: {) c4 U% h7 uto setup-plot1% B9 a" g% D% C9 L; |6 z6 Q% O

1 H% a  t- T6 Aset-current-plot "Trends-of-Local-reputation"
" e' }1 x# m* f% d" p! P0 x1 H
- W) l4 o' T0 h; F0 z
set-plot-x-range 0 xmax
4 x4 ], ?4 U- R4 q% M  O( W$ P

' a5 D0 u* W& q& h# O) Fset-plot-y-range 0.0 ymax

! l* R$ O  O* C' N% O6 _4 B1 K% `: xend+ g- l4 ^  q1 @- M. w

1 _  j$ g+ V% u0 u9 U: fto setup-plot2
- S5 k8 t5 H- }) i- w- y" k
7 }! X. l# G4 zset-current-plot "Trends-of-global-reputation"

$ b! y: b  E8 V* e9 [
6 ?% y5 W, ?/ ]7 G+ V+ N7 qset-plot-x-range 0 xmax
( _. ~1 }- v% J( f
4 `3 S2 O3 x; b; P# v) E" k
set-plot-y-range 0.0 ymax
+ S5 ]) h1 O% e& H& F* C! f
end' L% K2 V. X0 Z/ o) g4 m% [3 u1 G
9 |, C# S- e4 d8 d0 h/ A
to setup-plot3. D) D0 |2 i% U1 h+ I) K6 X

% `$ t/ E( F4 T  B/ p' ^set-current-plot "Trends-of-credibility"

. H, ^- M5 F2 V2 j7 ?! w# Y4 L! \  R3 R9 t) t. ?8 o
set-plot-x-range 0 xmax

8 l5 y4 S6 W" |2 H
$ B' s  F! C0 E, [% |! ~set-plot-y-range 0.0 ymax

% g, i( [- s- e. hend. z3 f& M! {3 s3 X0 ]

, T) L/ q2 f- {. L8 V7 q- Vto do-plots& D6 V- o) s1 ]
set-current-plot "Trends-of-Local-reputation". _$ R1 V' d, s$ H
set-current-plot-pen "Honest service") X* C' b. s& \4 g4 [
end
: a7 S! x2 Y$ b) V' {1 s$ W8 K' U" u; h# g& T
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
8 b* G3 L$ h9 v* u) j1 q) u
  H+ }3 Z9 f) y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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