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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:
( U# g1 D3 F# d0 ?" o7 {to do-business
$ q  I; N/ m  C8 v8 S rt random 360& z& W# U) ^# i4 Y( a
fd 1
% o3 l+ A8 M6 @& T ifelse(other turtles-here != nobody)[$ R  ]0 `* w- Z# L* H
   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 Q+ b! r! s: W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& F/ D, I7 m! c# h8 H. j. t   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ d6 e# N' M4 e4 g# y3 `
   set [trade-record-one-len] of self length [trade-record-one] of self, C0 X, `7 F5 l8 I' `  M
   set trade-record-current( list (timer) (random money-upper-limit)); S& J' d2 a( R$ n

$ \( ?# D( A6 }问题的提示如下:4 U5 G" }) `3 P9 i% n1 w0 \% g
! v  ?3 E" F9 B3 e1 [- k
error while turtle 50 running OF in procedure DO-BUSINESS
7 a: C5 u5 M* W7 a0 B+ r3 B( r& w  called by procedure GO
* M$ o. s0 L; U0 [' P) FOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 Y8 o8 V+ Y: V0 I2 J4 K+ ?
(halted running of go)* {# G8 a6 Y4 [, W# Z! X
& s  {, b: e3 I  I+ y  f2 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~~: l! U5 |% [' d1 L. D
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
" u1 ^: l* l, T6 j9 }globals[5 W) g( ], s: o. ~; G& c  z) m
xmax% |7 P9 D5 z3 e: u
ymax+ g' _- H( o6 P3 }
global-reputation-list$ e% ]( C  g# P

3 `& e  G5 x/ C3 ]. u% {; m;;
每一个turtle的全局声誉都存在此LIST
+ O: P) {) e. b! E: E2 pcredibility-list
% w: W' ~, t1 O; t1 W% y1 n;;
每一个turtle的评价可信度/ ^% o! V3 Z: J7 X
honest-service( |3 u8 C$ @& W3 W
unhonest-service
4 U$ z% t* F% U- y, O& L8 v4 Loscillation
, V7 R8 s" g+ ~rand-dynamic
( {# ?" s0 s( R- \- U( B5 J1 E1 {]- `: Q8 i* }) W# X8 s  [/ I4 d

  Q& A" c# g* qturtles-own[7 B! ~* g, z# _5 I# |
trade-record-all
# K# C" y6 u0 J) C) D7 N* G  C8 ];;a list of lists,
trade-record-one组成3 R3 H" R1 u8 @  k; c6 J
trade-record-one
: J' E! c# Z- _5 M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: R; @/ E/ H9 t
* S3 @8 F; _4 W1 T5 b% V
;;[
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]]
3 J8 j; s% z, s# H6 Ztrade-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 Y& C* E6 s! ]5 H  u% ^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list8 [/ \& s+ L) i0 b+ G" }* S
neighbor-total
( p# n. V" y. \* @;;
记录该turtle的邻居节点的数目
3 f: Q: m; c; r" Y, F! w3 j& Ytrade-time
3 a' [; W* h+ U- k: q/ k. k;;
当前发生交易的turtle的交易时间
) s' s* f+ Z, _1 f* Rappraise-give- ~; M1 H0 |. A1 y; ^6 K
;;
当前发生交易时给出的评价
7 N# p' I) j) \. n5 ]/ iappraise-receive
- |6 g+ c# H; m! Z;;
当前发生交易时收到的评价6 W/ c( c5 i7 l  t2 m
appraise-time
+ {& k# E, n4 T2 j$ c0 ^2 b;;
当前发生交易时的评价时间1 ?8 H# V0 V/ N2 e( Q- n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ S& B- N3 U1 ~  n, y) y
trade-times-total& w4 y6 Y3 \9 S1 k. t$ }5 S/ Q
;;
与当前turtle的交易总次数6 o* N! G* D# \3 w+ ~% d
trade-money-total1 K3 s- I' |) [  i
;;
与当前turtle的交易总金额( ^# g% x2 F  n2 p( j
local-reputation: y6 D4 U" ?, y5 l( b
global-reputation
" S- `$ L1 |0 u7 u7 |  icredibility
/ `2 h$ C' x- I; ]1 u- f;;
评价可信度,每次交易后都需要更新* X' \7 l2 L8 w; t/ Z) J0 f" L
credibility-all& e8 Z% _4 `# G& B+ d6 s
;;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
! H' M/ P: f0 r1 d8 V" e9 R9 h  A
;;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
7 B. T: |$ O/ v2 Icredibility-one
- T+ @0 M& [5 Y* O# z;;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
- e  A; J  `4 F! n5 ~! J1 bglobal-proportion
- a) y! ^  c& d* ]4 [6 Bcustomer. n6 J# K" s' P7 B
customer-no
) |( z1 e- X5 Ctrust-ok
' C7 t; R2 O2 J* Htrade-record-one-len;;trade-record-one的长度4 b+ F; |9 \+ O
]$ l" Y" u, Q( k) A* F3 ?

8 J) o% Z, ~! J5 g;;setup procedure( I0 n6 Y; F3 e9 j' @; e% Y

6 ~4 F7 E! v; v0 h. x/ ^to setup% @% p/ R5 y1 d# g3 S  b1 L

) f* M1 d1 w& i% c# W8 i3 [7 bca
* y9 X9 `' H: N4 Y
# {, G: W0 }' n& n( |
initialize-settings

( f( U% b0 m* @, k, }8 p7 O' z; ?  q8 T5 C5 m5 A
crt people [setup-turtles]
( o4 A" T( L  o/ D6 D5 `7 p/ d! t
3 X1 {) F, P# G! L+ i- O7 ]/ Y
reset-timer

1 C% x' J7 v: [, Z
* ]! ?4 x* J, v- u. W: y; cpoll-class

0 ?) U! \. r% \6 L% Z$ l9 G0 {$ q# s: o# S/ W# [% u
setup-plots

" U% n  [; A' e: q9 d( `: `
  m4 I9 N/ A1 n* k" f) r7 pdo-plots

, A5 m5 @6 ?6 wend
$ ~% r6 u3 y5 G" Z
' f: i! c  n! Zto initialize-settings
4 [9 h1 Y3 Z/ y2 B
$ i  t; T: ]) V; {, u5 Rset global-reputation-list []

5 |7 P; \1 `8 F& w7 m1 N
  Z# h7 i: a+ D1 ^set credibility-list n-values people [0.5]

% D. J+ G% Q# z5 ^- ~. x
6 v! C7 s) J% ]) P4 S$ gset honest-service 0

* q5 E( P3 Y0 `+ Z$ q8 s; M, p% {4 H. T0 R) a
set unhonest-service 0
8 v3 b8 _" z- S9 v

0 m: R: G, V3 W- Wset oscillation 0
* c& l% {1 I8 o+ w! l1 y
4 S8 ?9 i0 A( @) d% K; c* ^
set rand-dynamic 0

* W/ _, W( N) M# N- pend
/ R  \$ o+ \# Q1 C0 z& |& `1 {' u" ?: m4 z1 m. V+ |5 s- ~
to setup-turtles
% g. k- f8 u, @6 o- uset shape "person"
) V8 [! Q" i3 w8 r* @$ i/ vsetxy random-xcor random-ycor4 `7 v8 p7 i2 u$ Y+ A/ @% l
set trade-record-one []! K0 F4 x+ p8 W% K( l

- H" W- h  Q$ N5 I6 B! oset trade-record-all n-values people [(list (? + 1) 0 0)]
* s3 w2 T/ Z! G; {( P5 s2 r
. ]% y9 u' W7 z4 d5 i( M1 O, z
set trade-record-current []; Q  M+ n- q" X5 C  w: J3 {) u' \
set credibility-receive []0 J9 ]7 I( s3 m9 e
set local-reputation 0.5
  W4 z9 u$ ~3 S- S$ c- K) cset neighbor-total 0; a: @# X& r% ?. L
set trade-times-total 0
/ w9 a) i) ]# O0 U/ ~/ p( mset trade-money-total 08 \1 C# k( Q  b- B3 M
set customer nobody# [3 |; g7 e8 G# s
set credibility-all n-values people [creat-credibility]
" G* b. x7 T! a$ vset credibility n-values people [-1]% N. U, i8 I( z( b* O% `6 D) I: |
get-color! u* t, v4 x0 Y9 a' `! L! @* S3 T1 l& z
/ {& w4 O/ u" A3 k) ~
end/ ?) b4 e* f: w; I
9 |/ q( E. |; Q( a& g- x3 q
to-report creat-credibility
1 o4 m) B1 d' B3 y$ N& f3 B5 }report n-values people [0.5]: x, }2 T9 S- ]4 h' u+ J
end3 y- k7 y/ a* n
* `- Q7 y  j' R% K6 A( Z; u4 z' Q
to setup-plots0 j' G2 T$ q" }; C
# {/ f. ^( R, \, Y$ F
set xmax 30
" N3 v8 q+ C, O; ?( P/ N

; f1 n( u* a! A$ [5 yset ymax 1.0
% z! D9 z9 O& j
( g/ l* K% x+ V) a. k: j
clear-all-plots

6 P9 r0 b( M7 R- q7 a3 q1 E( d
# Z% e+ A2 q) ?$ r, Q" ~7 M/ Nsetup-plot1

0 }4 `  a$ }( J. j$ V
! b7 O. j2 ^; s& q' d# N. bsetup-plot2
5 n# q3 k9 R! m8 b) d- z2 B

0 ?" q  Q$ Q& m# I: n9 W. g" \setup-plot3

- s8 G% E) i5 y4 O2 lend+ f% o4 ?; k$ |6 |
  ~  H; j8 W2 b1 d$ h( M
;;run time procedures
5 y; P' l) [& @7 N
0 {  A) C' j; ?$ J4 J0 ato go5 z. G" z2 F+ p5 S
% K  s! W2 L, K5 F4 A4 M
ask turtles [do-business]
8 y% y' r3 V7 ^% ~+ r/ @% D" h
end
& r: n+ n5 _& a$ I
  r+ b1 v& T& ^3 zto do-business & u, C* T" X- E
8 P" K( n8 K4 r4 W/ |6 d
: G* `) R. k% W% V
rt random 360
- o' {+ _* @. p9 q* {# X

( ^6 A, K$ Z4 v& M, {% B2 ^fd 1
: u8 ^0 L5 \4 l) D3 e: O

4 Z/ O- X1 |5 _ifelse(other turtles-here != nobody)[

* E& h5 E! R; z' |6 l9 U9 p. [$ u, n+ m# o9 O# t& z( K4 p5 l
set customer one-of other turtles-here
( X( Y) |! y/ T# b% U, A; @

# j) O( z' j" E3 u6 Q;; set [customer] of customer myself

9 ^( A5 _0 e- B& }( ^( Y" b: b1 ]4 d1 \, e: y4 O
set [trade-record-one] of self item (([who] of customer) - 1)9 t" s% X2 |( i
[trade-record-all]of self+ O& {% e+ J7 @: u5 k1 ~; v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( K2 ^! O2 X& M8 E& @% W( r6 }( W: e8 L0 ^$ J" v
set [trade-record-one] of customer item (([who] of self) - 1)
3 k& |, O' C: c7 [: e9 x[trade-record-all]of customer

1 [+ E" ]# W) x$ |+ T0 S2 y0 b& C, o) e& V( _, X) M4 V1 G
set [trade-record-one-len] of self length [trade-record-one] of self
- R7 X' z: W) C* t: \) `

& O# u9 d, p1 K: sset trade-record-current( list (timer) (random money-upper-limit))

6 K3 V8 ^4 v8 t: q* L8 ~# R* w: v5 f! O% U7 s& j" z
ask self [do-trust]
% y/ \/ S) u0 W- x. d& N: J;;
先求ij的信任度
: C8 K: N3 w4 g; l7 E, t. u7 O1 n9 Y2 F
if ([trust-ok] of self)$ V9 o- v; A6 F3 u
;;
根据ij的信任度来决定是否与j进行交易[$ W. z! K4 ^+ B, c, P. E/ x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; R6 U& Q9 c9 m7 x0 C/ F% p

, P, o: K3 E% z2 C& j$ C5 j9 w) N[

- Y8 h0 x" M% U; K
  _9 ~8 o/ Q- _do-trade
% N# G3 V7 {9 Q( e
5 {3 A6 {* q, P
update-credibility-ijl

  \9 _- `, K8 k. }( d
$ d2 [" W4 C5 n. xupdate-credibility-list: U* S6 A" V! o4 Z* {' r6 ~+ _

; S, R1 R* R( j. b& z- g3 }# Y6 W. i2 q+ R4 w# {* L& J
update-global-reputation-list

2 N. I. k" s8 {9 f& D9 X, E: {
: Z9 U0 |" w0 P1 \: _; epoll-class
# m7 v8 @3 I0 q/ X
0 }% t& v% D1 @7 F/ P; N
get-color
8 X' E: B3 f) R
% `: ~) T# @: b0 A6 J4 I- t
]]
) e4 v* Z% `0 k4 \% I+ D. [! }* @; Z. V6 ^, C
;;
如果所得的信任度满足条件,则进行交易; x  W' O4 j6 P& z, {1 S& w
$ j/ q; g$ T/ G
[

! z8 q4 m- p7 D  t0 _9 c& n) \; P4 ^- V% V' L% x6 @0 e3 V" g
rt random 360

0 O  h1 M3 U- X' j0 }1 M! v9 }5 W# a+ M) _% w+ d0 K1 H
fd 1
1 W. ]7 n7 [+ P' P
: ^- P4 I4 F! l" `- K
]

: `. @; g7 s7 m/ p' B
; @0 ^: u8 Y, }$ y! H8 ^9 |4 Cend

5 x4 }- H4 f! D1 F0 I8 y7 Z9 [' c% J
+ e9 C4 w( S6 q9 ^; x$ Oto do-trust ! d$ i; l5 [+ ]/ E+ M# j
set trust-ok False
- v' B" ^) R# v
- U3 b( R* m  m
9 i/ v1 m9 ?' m+ f' x4 }) x
let max-trade-times 0
, S# Y5 U) [  l9 l4 |* l( mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 W- \  i2 b8 \( B. b
let max-trade-money 0+ M- \2 i; @! D7 a# H0 {# V
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 x( s8 Q! V' ?8 @6 r
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 H* e) T$ I2 ?) C" ]+ {8 p, `7 ]% i5 B- F
8 [3 b. Q& S; B- x1 p
get-global-proportion
: x: \& o7 |. i- hlet trust-value
$ x  Z. R, @3 M' i1 b9 n, k1 |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)
9 t1 n$ z$ O2 T
if(trust-value > trade-trust-value)
3 x; ?6 w  E: Y[set trust-ok true]
% w8 f' t) k+ Zend3 h! X: }: g7 H( x6 x# w

& F1 e) ~2 j- S, v$ ~! ?0 ato get-global-proportion
1 ^, T* z5 `8 f) o  o% g4 C  {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 f( h# d2 g/ h& }
[set global-proportion 0]! \9 w7 A" W+ S9 g
[let i 0
& z4 i' B) U( N( Llet sum-money 0
9 J( O  `5 W7 i0 jwhile[ i < people]
6 z9 J6 Q7 S0 N9 c% {" s[
. ^1 {9 w3 ?- v# dif( length (item i( \1 i+ D! y8 {" o9 ?/ K( f7 s
[trade-record-all] of customer) > 3 )
* }6 {: F  F) ^7 _; R
[
) `" S/ u, ^6 ~& I" Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 D  ?& {+ a$ S% A]4 u4 |! j! f# |  ]  \4 a# Y9 e
]
2 m6 [- f- D' ]5 zlet j 0
+ b$ N" }. d! u1 r1 s3 M* d: o$ N2 Blet note 0
/ K) h9 m! E9 T7 \- l- B+ gwhile[ j < people]7 j8 u, C7 R$ l9 g
[9 n& D0 h$ b4 R% ^5 w
if( length (item i' y2 w  `' E$ X: v, F/ |
[trade-record-all] of customer) > 3 )
$ ^5 b) x/ u3 S  A4 ]! _
[, l4 R0 h* o* D* C5 z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 l4 E- x2 o  v: U( @' C1 F4 Z: a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  M0 k% \/ o! L1 p[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ h' w% e# t8 }* ~% q9 r# x
]
) j9 }+ ]/ O, }- j' Z( I]
% C5 f8 l$ O2 [: ]9 iset global-proportion note
5 F# {2 `8 C4 h  Y$ e/ c! L# K; y  |]
# K( g: `& V( y5 M+ a9 _6 rend- V; U( g% H  m4 w: c
8 b9 j! r' J' n' s5 l
to do-trade
& m& p9 L% f( z, v/ I;;
这个过程实际上是给双方作出评价的过程
) I4 D6 c! b4 q& W$ y, gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 I( d; @7 m3 p3 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 A% ?  g8 H! o8 t* R# j1 a
set trade-record-current lput(timer) trade-record-current. A4 ^8 K: H1 P9 z/ Q
;;
评价时间/ E; |: |( R& o! P5 X, W6 v
ask myself [
( Y3 d5 _# T) i- U, x5 Qupdate-local-reputation
5 Z' K1 S+ K( H3 pset trade-record-current lput([local-reputation] of myself) trade-record-current
- F: P, Q+ G7 {$ V  c, {3 _]5 o% d$ z; z9 U8 R. f3 X: y, \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" c6 i7 C8 H% G; r( G8 m
;;
将此次交易的记录加入到trade-record-one
' N9 v: l8 _1 w- ~4 }: y) ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- Q3 D5 I# k9 z% z, t( e4 O- u
let note (item 2 trade-record-current )
( ~0 e; `9 |+ `set trade-record-current! W" q' V! b+ ?: U/ ?2 I
(replace-item 2 trade-record-current (item 3 trade-record-current))
! }( h, M& }$ E
set trade-record-current% ?2 p( ~; E6 R' Q
(replace-item 3 trade-record-current note)
* j( E* k! h, M# a# n1 p
8 X% K1 i- g4 j3 w- @/ k; \

. R' l7 O/ b6 M4 vask customer [" @, c  e" l; ]) K3 E0 [7 D
update-local-reputation$ F7 \5 @7 B: K7 E2 f2 H. A1 y' G
set trade-record-current- }: e1 n4 n! y9 j$ f
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 X$ e0 t" E: M' `! x7 q]3 o, V# s7 z  \% D
6 |2 q- N& C7 j8 M6 B  y/ }

/ W" {2 ^" W, N  ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 s: [& D4 [  y. `# p' t# B
2 }. `  ^+ |/ h4 B! z7 p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ @( D; ]$ ]8 Q. n;;
将此次交易的记录加入到customertrade-record-all* I3 ~% P  U9 J3 O! ~
end
* H- g5 Q/ i0 L6 Z9 {. q. b6 e+ k. C- V2 W
to update-local-reputation
6 Z* D! O* c3 Y: N6 Sset [trade-record-one-len] of myself length [trade-record-one] of myself5 y+ r  _' c" J+ K6 {7 g0 N

! V# E4 l+ w5 R& r5 W9 p
. R; H5 W. u& T9 f;;if [trade-record-one-len] of myself > 3
$ z$ K  P& d/ E' U
update-neighbor-total
" F+ P4 U- v9 p;;
更新邻居节点的数目,在此进行% u! G7 e  x6 J2 R4 j
let i 3$ C+ O2 v0 C& v
let sum-time 07 ^; E3 R6 O7 X* F
while[i < [trade-record-one-len] of myself]
2 Z% J# l. x' u[
. k0 Y& H8 t# [& y5 V1 w: z0 H* uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ E+ O: Q! g( M" C
set i
; B9 b& {# w; H- J( i + 1)
3 b* K) K, ^6 Y% @5 g# l3 i7 C: j
]9 D+ Y) _0 ?$ q/ b2 S# z$ b
let j 3
# L& n& x3 N( z8 p6 j9 mlet sum-money 0
6 s; |" w9 p2 l! Z+ K3 H, I6 ]+ ~while[j < [trade-record-one-len] of myself]
% i# M" U; H# U' \# v2 _[# T/ }) v* w1 G" R
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
8 e8 T* o0 c4 pset j. J" H5 |4 D5 `0 z: S, X. }
( j + 1)

, y7 [: c$ Q# v) q]
+ l, W6 D7 L' q" T$ elet k 3
# c5 c9 _1 V9 j- l; Nlet power 09 l3 ]: T9 y+ b, L* {7 p
let local 0
' k+ K0 s* _  d; o( w- Q+ iwhile [k <[trade-record-one-len] of myself]
- }! A( A7 u8 B/ X& {8 d[
& C4 a/ I( d0 `1 g+ h8 {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) ! i& X; @  d$ P6 `8 J1 R8 w
set k (k + 1)& S9 \+ M  r5 Y2 G
]- ]1 c% J  B4 `; f
set [local-reputation] of myself (local)
, H! Y) E' K  [7 i; {( ^  V" ?end
( L2 K8 Q! A( \- w" h5 W' H- M/ ?* t4 z+ f; }+ r1 T$ z) Q
to update-neighbor-total. g$ k0 g$ r# e! l7 T
% S9 r# ?+ K6 X7 c
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! c( x8 d$ A2 ~

7 {' S# l4 G0 T% C3 ?
) N/ g% p/ |+ P& `8 m
end
7 ?, w) v" }6 e' I! i7 \" u3 d  O$ l% y' s+ }
to update-credibility-ijl
. {( W4 H4 m* m4 K/ I
7 f9 o2 ~" q! ?+ w/ @5 }9 x5 u; S0 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。
; E# T( p: P5 W7 {) Ylet l 0
8 }. b  z. b" ?. wwhile[ l < people ]5 N7 @- ]# v: n& a6 Y+ R( L! `. i
;;
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
/ u# h' h. h" n[5 ?* E, ^4 R* M2 p5 L7 r& r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): d+ I& @. H- u: F4 c6 f0 `! n
if (trade-record-one-j-l-len > 3)
4 \" t! m7 \# n7 E[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
7 D+ ?0 F- L: Hlet i 3% q# Y- I1 `8 Y# y# E' q8 u
let sum-time 0- J$ `& h' T8 J
while[i < trade-record-one-len]
) f; w/ w; a5 b, ]! p- g[
; u6 C4 s7 M% i/ bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 t. s. [6 z2 z  T* @: g$ Rset i: r* g0 q: H9 i% l  I( C% A; k
( i + 1)
3 x( Y* o/ x0 f! j
]6 p9 Z9 |7 j3 l
let credibility-i-j-l 0
; }% I: m* P" d6 n2 [6 R7 u; b) o;;i
评价(jjl的评价)/ L, v9 |1 B8 s8 ]7 G0 |8 t
let j 3
* O  c8 |& _- s+ alet k 4: p" T' j, y+ I, b3 K
while[j < trade-record-one-len]$ m: a3 g+ q+ A2 G$ G0 V, z. x
[
& D8 u4 D, m) Q3 r  Gwhile [((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
8 Z( Y4 Z3 j# Xset 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). V* Y2 K: ^2 g' Z( S, J
set j; v: x$ }* `7 F) D6 J' L7 C' e
( j + 1)
$ E: g6 A9 ]9 k- O
]
* I3 }0 _3 ~4 w  ?" R: T; H# E3 `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 ))
- @8 R" \; d0 B$ g2 l5 L  z! @: b: `4 h. m0 C7 d9 n

+ q$ t/ T! {# u0 R! q6 m4 Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ E$ x, `. u! P2 r" i
;;
及时更新il的评价质量的评价6 Z6 O3 c9 J8 Y* b9 B- m; V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 r: j  l; _+ I: ~5 U  x9 ^4 k
set l (l + 1)) Q6 z2 O: B' `) j2 A- n$ P
]" p+ q6 b% }5 t5 ~$ \
end
# }; H6 C9 `# s; ?' \$ f3 {/ U4 R2 o0 G9 k$ ~
to update-credibility-list
. F+ C6 Z8 o/ R& xlet i 02 `. B6 d% G! @
while[i < people]
- r6 P: N8 \* Y[4 I5 J- m# ]7 n# F% J, a! N" ]
let j 0$ c3 J8 m6 v7 D" J2 K- f8 \7 J
let note 0
  [# U% n/ I1 Y4 \3 d- s+ X% wlet k 0
: i3 s$ R* O2 K7 Q5 l* ]5 C. k+ [;;
计作出过评价的邻居节点的数目4 G; w6 G- ^$ H% N# _
while[j < people]
& ]* H8 t4 i; ~[$ d$ L! @' y1 k
if (item j( [credibility] of turtle (i + 1)) != -1)
1 X1 X! \1 f- o; k' G- ^3 [" i;;
判断是否给本turtle的评价质量做出过评价的节点
5 F3 o3 N4 v" H[set note (note + item j ([credibility]of turtle (i + 1)))
+ W$ `: t0 C+ Y( D/ j;;*(exp (-(people - 2)))/(people - 2))]
0 l4 `/ v3 O. W" C7 Y* P; r! g1 D9 E
set k (k + 1)9 w8 W( _# Y+ y8 B: k
]" ~! w" G3 T# _& X
set j (j + 1): y, L1 d9 W* B6 ~( F8 V1 m
]7 g) t* ~1 O" ]3 |5 x
set note (note *(exp (- (1 / k)))/ k)8 @/ F' J' r3 m& L
set credibility-list (replace-item i credibility-list note)
  D1 e6 P8 K% K0 ~2 I3 |' Jset i (i + 1)
$ N# r) I, Y# ]4 h0 @7 K1 L]
3 j$ S8 f( m: t; |! _  A4 Qend& R& x* F! T( a: f

. a# B5 T; {6 yto update-global-reputation-list
% a; Z* f& p/ M  V& w1 `6 olet j 0
2 @  s- V1 B' ^8 w  p6 o0 b$ C- `+ Nwhile[j < people]7 g6 M+ V+ p8 @% ~6 `1 \! D+ l' R5 ?
[
6 S6 \5 Y4 Z4 V" \1 M- `let new 0
$ P  d: l7 [% D4 \& z) R;;
暂存新的一个全局声誉+ _. D  N8 @" Y
let i 0
+ @$ |" p6 k) @. }let sum-money 03 I4 z! E0 X" j  b& T/ d. _0 u* e
let credibility-money 0
! M7 H) B) o3 ?! [6 ?- X8 ]while [i < people]6 P9 O' P2 A& w0 z# _9 c0 ?
[! H2 P* ]' i5 ~6 d$ u4 _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 u5 p1 X" a/ n" `. a( X& `# G3 Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, n, @. G$ b% ^  ~set i (i + 1)6 U6 r" b( k* b, Z- J9 w
]
6 G7 @. U5 m8 G2 Vlet k 08 B1 c8 v0 c( t0 x3 N
let new1 0
/ w) j: F3 L! R1 J0 \7 b# xwhile [k < people]
/ }7 h! G* ?- x# l* b[
1 p: ?& o+ Q! _7 a1 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)' l$ n2 J; q5 `, N) \& x
set k (k + 1)
( j1 t! E- \7 L. V], `) T/ x3 v* q; u- P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + {5 ^% f9 }' i1 A' i' p6 x
set global-reputation-list (replace-item j global-reputation-list new)' D# @5 ^8 C- R4 Q
set j (j + 1)5 B0 B4 [5 H; l" G7 X' J
]4 C" C  \; p; c, ?, L; N. W* F
end! C1 O' {# ~- Z  k3 N( U6 w$ A0 F; \" r1 P
9 {# O/ N: ^/ i& j% ~( p
5 W1 n$ [% i' y# O8 G

/ l6 S  G  Z* P# k: B6 y" gto get-color
, H3 W1 G4 E* O# `% z  V
& `1 h% t/ c: t/ l1 Y/ s* Dset color blue

& _8 ]. ~4 z+ iend
& R+ x0 d- w7 ^& u' c# w3 B" Q( g
& Y2 s) ?- t* pto poll-class- r2 d' P4 l6 V, h2 o
end
4 y' D! J( o* k: L1 z8 G0 U  T7 x% Z5 F, e
to setup-plot1
3 _0 ~) n5 N! A# O( t5 A" b  ~9 }- _0 U9 s
set-current-plot "Trends-of-Local-reputation"

0 Z# v  Q4 i5 y% K
7 a/ J4 |9 [. ^set-plot-x-range 0 xmax

* k+ O+ I+ C6 w  {% N, n& t
& E8 Y! b: k" Q; A8 {% e0 f) Rset-plot-y-range 0.0 ymax

0 `- i6 h' x4 y. \end- C! i3 B5 c; M
" ?3 ^) B6 }  R2 O+ J
to setup-plot2  p( n/ n0 ?+ q4 F9 q) m
# R/ L! R. E/ H+ j; `4 ]
set-current-plot "Trends-of-global-reputation"
, h# |, U) J4 |; n* e% i7 M+ h
( z) J4 F! Z7 d
set-plot-x-range 0 xmax

; R; V- L6 N1 A, e/ {- I
0 [/ |$ ]- r0 L: Aset-plot-y-range 0.0 ymax

0 I0 X1 d$ _( ~, B6 k8 cend& o% G% e! v3 a) _) E7 d
1 y: s4 |* \! w( g4 V( a
to setup-plot3  }5 C8 P  Q  P  K4 ?- m* |

+ O7 z% K7 D. F; `) B9 oset-current-plot "Trends-of-credibility"

3 U0 G* \: P) P8 Z
# o. ]$ y8 ]! o; i) |set-plot-x-range 0 xmax

" I+ E9 e3 @2 i. S7 V& X
2 M3 i: g) @/ \5 C: E9 k+ wset-plot-y-range 0.0 ymax
+ E6 b. R6 ]$ y/ B
end! j; w; B2 i1 f% i! n

( I' w/ K' g( N7 Nto do-plots& g, ]2 s, k( y0 ~7 N
set-current-plot "Trends-of-Local-reputation"
6 n7 U3 }& y- tset-current-plot-pen "Honest service"; @. [( Z4 `2 z6 Q) [
end- B4 s  g) I; T/ g7 z9 x: ^  G+ p* X
# g8 V; h. `5 N3 k5 J
[ 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.
% d; C# L9 u& u4 @1 ]
+ V% D/ f: C/ P) [. S, s) J) j, N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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