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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:, s  G+ r5 v1 b2 k1 y4 w5 @
to do-business * z5 B' F6 C: F& M& g
rt random 360
5 G. _" s0 p- e% g+ [ fd 1
, y9 ~' o! s9 x  }( I" n ifelse(other turtles-here != nobody)[( H: K4 c) V0 t$ T- [# D2 R% s
   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.
& `5 \. \3 |- |4 k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* g% D: w& {/ X8 v, ?' I' G$ {   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 p8 u7 z: l& @" L
   set [trade-record-one-len] of self length [trade-record-one] of self
0 f0 N8 [2 s( @% h2 j   set trade-record-current( list (timer) (random money-upper-limit))
1 \9 h7 I' I* E5 f+ e# r# h  o+ L- q# V5 r
问题的提示如下:  _! |2 [4 \: K3 Z- L
1 u- u$ O9 o# V! o
error while turtle 50 running OF in procedure DO-BUSINESS( j$ s; d, P6 H7 Z& h& ^& q
  called by procedure GO
. M% q. {! n  b1 a* h  o% QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' R' v$ E: p8 U) R+ {7 ~- J: u; ~6 @
(halted running of go)! C* ?" n  k) d# w* j( r
, z" f8 }/ z6 c) r! I# B$ a
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~~
! K% u. \+ x/ U. d# D1 U% c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/ p- X2 H7 K9 b% {; X: H
globals[/ \3 v7 v+ l, l; E0 E8 b
xmax
3 A# J4 ]& I7 ^8 A1 ^  [0 n$ Aymax
) I' m. r. l% Q) pglobal-reputation-list$ u: ^/ \% m2 x2 @! x8 \* G" j
/ B# U! P1 O2 c0 T& `8 W6 x
;;
每一个turtle的全局声誉都存在此LIST
' r4 H9 `! x* Vcredibility-list
& B7 Z& W7 G! a8 n1 P& f% \5 y;;
每一个turtle的评价可信度& d$ q* ^/ G5 a+ D7 @
honest-service0 h! N% j) _& N
unhonest-service7 c- ?* J- s% }5 _
oscillation
' u# a! ~+ K% W( H* b+ Zrand-dynamic! M0 I: d2 [/ p0 \+ z+ _. Q
]0 x) Q* X" q- M' J

( G4 J+ Y6 |3 N8 Eturtles-own[" K3 c+ |) l# e  I# p1 A1 {
trade-record-all
. D, i$ `1 N" c" |3 N;;a list of lists,
trade-record-one组成
& \4 R% t7 G/ V  Q  j& ptrade-record-one
- B" S" Q( V+ t5 w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" K* z$ N# Q" [3 {6 a! \

- C5 M+ m" n7 c, w& z* J% [+ U' E  T4 ~;;[
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]]
% y4 A' _9 ~* n$ Otrade-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]7 ~: `+ M# G& c. V* |6 h
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
" p! Q8 ~, q/ U+ b6 bneighbor-total3 I9 |7 Q5 [+ C; |# ~1 F
;;
记录该turtle的邻居节点的数目% v1 T. O( o2 p, [, \- E
trade-time
1 ^$ D/ y" I  P) N;;
当前发生交易的turtle的交易时间: E8 j5 {) x/ G
appraise-give
8 [- |- H, d6 ?5 J% M;;
当前发生交易时给出的评价" }; f9 T- e% z; Q; a
appraise-receive; t/ `7 [/ T/ U$ p5 d3 c/ {0 U% n
;;
当前发生交易时收到的评价
, h+ Z3 H! P% H( N. yappraise-time3 p* j/ B8 C" O5 B' s" c
;;
当前发生交易时的评价时间5 _! o, g% P, H. k0 t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. {7 P; D2 ], w9 U9 `, R5 F0 y
trade-times-total$ ~9 F8 b( }6 A- s6 g: F, k! l$ c! t7 Q
;;
与当前turtle的交易总次数
( {# q5 ~+ S: q: q7 }0 Ztrade-money-total
$ E1 n% o8 ~3 c- i' w' [" V# a* B7 y;;
与当前turtle的交易总金额
( [0 k7 Z1 u( V! Tlocal-reputation
0 C; V' L3 y. d1 Y" I: w& r6 l0 Gglobal-reputation4 B- R1 Z/ k$ ?- G
credibility
9 P, H/ Z7 F) q# n/ m4 G# s5 `;;
评价可信度,每次交易后都需要更新
0 C! L, |  S" K+ w9 P/ o6 V- Jcredibility-all$ E7 ~) t7 E+ P1 D9 @! {  f+ 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' v" i5 s# _5 R/ h( z) p  ?' t& ]
7 }0 i1 @  x9 `1 I' i0 n% O) B& j
;;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0.58 `+ c7 {7 U- D" E5 S0 I1 O. v
credibility-one5 p; t! T- s" \2 D
;;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
% h3 f- A/ j3 g! Z3 d: _* j, S4 E1 Qglobal-proportion6 u9 D% o5 Y7 v: M- R
customer6 [5 U1 F+ ~" v  k1 U% g
customer-no
: ]% c7 e7 i  `5 \9 F( x$ B9 y2 _trust-ok
9 S3 r( U$ C/ j; q$ C6 xtrade-record-one-len;;trade-record-one的长度
; e: z$ w$ z& U6 k- m8 s]! w% H- r. y6 r# x! y/ B

, Y( t! i6 W+ P' m4 B;;setup procedure! g3 u' P: C8 Y% i* m! |

& d" |( N6 X7 C2 |6 L/ Yto setup+ x/ s1 D  {" J8 P4 x4 g

: [, h' w5 u+ i/ K" X( Tca
3 G9 q+ E* V9 s5 M
  x$ H4 e/ r! Q4 i
initialize-settings
; M( s: j$ ?4 \7 c, \  `& u9 `
3 R5 B  S+ p3 E! c
crt people [setup-turtles]
1 G) u: @9 j. {3 B
3 S7 w; u( k5 j, i
reset-timer
2 X7 Q' S# m1 ]

6 s6 Q9 ^: Y' _: Q# }$ f( w1 ]poll-class

! Z0 D2 u" x* r. y
  M& Z6 Q. e5 m/ y  }setup-plots
5 `, E! @* E# O% c" d5 ~8 I# T

+ ?# Y. Z) J( C" r4 n% z! Q8 R$ V5 |do-plots
; z) X0 ?/ N, ^* n" z2 I
end% [, u: g  `/ j: R
8 y4 J9 M" I% R4 d( f% Z
to initialize-settings+ t5 p5 I& {, p8 J/ S

1 a) R# F1 q! a) n- D* Cset global-reputation-list []
4 |: K3 F( R0 c8 m2 q7 Q) [

. f9 n# z7 y3 k* R& s8 n) _* J* \set credibility-list n-values people [0.5]

. w& l  u* V" Z( N$ B1 ^6 {
* R1 |4 m; J- G9 Z+ R5 L" Sset honest-service 0

! ]& ^: ?. O- Q" T
. _7 {3 }2 S! I6 |+ k/ }set unhonest-service 0
% ~: X" ?- Y" o0 O6 I+ C$ P  X
- Y/ a, H' Q8 }# X
set oscillation 0
- M6 A% m; }7 C0 @" n. D
" C0 g$ U5 s. k* Z5 I) U
set rand-dynamic 0

/ K% }0 H, ?- ^/ j2 H# }% Kend
! v% ~+ b% q- V
/ [, ~& g+ v: O2 `5 Bto setup-turtles
, J6 V# v. A" ]6 @set shape "person"
- N4 v) m. ?9 F( N7 U; Asetxy random-xcor random-ycor
+ |+ x7 n* t8 l( R6 b5 Dset trade-record-one []
, G' v, h3 x; e. Z2 S- x

7 P% H# D& P! L$ U* h! P5 ]set trade-record-all n-values people [(list (? + 1) 0 0)]
0 K/ d# F# v2 s. L$ k6 k9 o

9 W$ }) N/ [8 M' g0 V" Rset trade-record-current []
6 a0 I. B' g4 B5 Q  F: k$ dset credibility-receive []
3 Q# E; H* \# b  D" }! A, Nset local-reputation 0.5
1 f% _: m$ H5 Q5 v! ^" jset neighbor-total 00 k! u) Z3 ^+ Y. S
set trade-times-total 09 y2 |4 }9 C+ P& l
set trade-money-total 03 r# I3 |! g& ]9 z6 c# N0 a9 h3 ]1 N
set customer nobody
2 ]" W5 r: U) b9 z  o) w* Mset credibility-all n-values people [creat-credibility]0 A( A& H4 R/ |3 x, z
set credibility n-values people [-1]
5 }" \) Z0 B6 z; Bget-color
- w9 [' a- T/ j2 o( W. m! c8 \
) h8 L1 V( b5 m; {0 _/ ?( O
end7 T" T/ q- _2 |! S, I2 C+ {# j

( m$ {# J! p: W. l2 yto-report creat-credibility+ x% x! j& V! f$ }; C& s3 ~* X
report n-values people [0.5]' o, e4 e$ K" {( y3 k
end& l; V, J$ H0 l

. @/ q. `' c+ jto setup-plots
/ L7 @9 W* J8 R2 @  A3 H; ^% O  V9 U$ E6 x& a+ f, Q
set xmax 30
4 v. H+ W, B$ m3 k8 ~  E
* t4 p1 f9 a0 ^2 n" o
set ymax 1.0

; g+ h( H4 o  _( @" n+ A0 S# a; h: @6 I3 V5 H! I# v
clear-all-plots

) j5 p( [3 T/ z" G  Y
; c8 p; N! F4 y9 `6 |$ U9 Qsetup-plot1
! H3 R1 O  K3 Q# S# e/ m

( n7 a4 N/ L! X/ `' ?setup-plot2

3 a/ s! |3 w' J- l' s  A7 ]% l  p$ ^. A4 q) m4 t% q
setup-plot3

" L6 K# p& R  |. U" o/ Jend
+ j/ H( g% p. w1 \' f0 `& I& L4 a; ~5 \; p
;;run time procedures
+ H, D6 h8 N9 w- v7 u0 H2 w. E$ ^  i
4 r" m3 h) }. j6 ^, _to go
. t5 P% Y! o4 w. }, l, V$ t  k" _4 i2 S( `9 Z! G/ U7 `6 F' ^
ask turtles [do-business]
2 f8 e9 I: w* J7 e3 H
end( v$ x4 ~' x* r: N% |6 F

, R. x9 B' r7 E4 j8 F/ oto do-business
! |0 \. X1 e5 `6 N* E- `  e8 i
" M9 q8 q7 v$ |. z* N6 k
# p" }; w# |1 n. t7 J2 ~* Y
rt random 360

* a: b) n9 A: G7 R0 o* o5 k' b; b+ q4 I! a4 ]5 [) R/ G. Z- ]- y/ M
fd 1
* N) `7 G/ F* J! G
$ w; g: q, x9 V- p1 x7 f4 f# ^
ifelse(other turtles-here != nobody)[

% P2 K  J; m, K. `9 c/ W: E, S+ p& K) I3 d. D
set customer one-of other turtles-here

, y- I  w  x' ]  \: h" @
  e5 f0 |2 m) d% ~& C* P0 R4 n;; set [customer] of customer myself

9 Y1 e: |# c6 v% o: ~1 s
" {0 e) x" {6 v- A$ v% ]& cset [trade-record-one] of self item (([who] of customer) - 1)2 q, s  Q4 X) @: n
[trade-record-all]of self
0 @/ H" {! E4 e- @/ h6 p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- X) U( s6 |' i1 c+ F8 w' l
5 Q( ~' n, g, ]! @! S* ]% O
set [trade-record-one] of customer item (([who] of self) - 1)0 y- r8 @) y0 M( f9 K+ A5 ~, n
[trade-record-all]of customer
2 o, ~$ y- F/ e3 B/ c4 I

) e! i+ l( E1 G& ]. }  hset [trade-record-one-len] of self length [trade-record-one] of self
3 O/ o( x$ g8 W8 v* W

$ O# q! t+ P# Y6 w3 z; L4 O( f, O+ Z' sset trade-record-current( list (timer) (random money-upper-limit))

" k& q% w$ ~7 D* B: G- |
+ p; z6 n! Q- L" C  a) A" x9 E( wask self [do-trust]  j0 X$ |/ w. K, B, s# R
;;
先求ij的信任度/ n' h) c" B! [' u2 X1 E- @
( R, P) S( t+ P6 p, G% `: ?. `
if ([trust-ok] of self)0 d& F7 C; d9 s( b
;;
根据ij的信任度来决定是否与j进行交易[0 q% C% e4 R( g0 X. @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' T' L9 t# K( d( \# N; v
* ~& `" \! m3 f1 S' o# b& \[
: E2 a, F- ]1 W* g) e7 \
  I! }7 H& B% K: M: Q$ F- h
do-trade

6 _/ P3 z9 F& E$ y6 x( `# n* `. G2 y$ |$ A
update-credibility-ijl

  k2 k$ A, b9 p- J  q  Q
. c% {6 s$ c% s& _' Jupdate-credibility-list) j  _6 z0 S3 ~2 \3 Z

  l& k) t2 R  g6 k. V! x
" V/ c% p0 }6 n% E  _update-global-reputation-list

; S  I: j; g3 [4 V% O' a5 w! h/ m( r) ]& ]' E
poll-class
2 s' ?  Y( Y/ R& J9 k: Y; a

6 P# r  p; _  {. oget-color

/ J  t  I4 W1 O+ N- I9 M$ v
+ Z7 ]# \# L6 R" G; C- [' ^]]
; x. h6 K9 h% u( q" @" i) z3 I! f4 R9 Z
;;
如果所得的信任度满足条件,则进行交易
4 m4 Y6 s" H! M' [, l; g* X! [/ [" e' ^! w+ D6 F: O& h
[

8 b9 b# G0 y( ]$ P) Y" ?
$ Q5 H. G0 J6 A. ?% P! u! V, F/ |rt random 360
( q5 D0 S% L+ @; k

$ o% K0 ~* O7 H9 L' c/ X+ afd 1
, T& C8 u3 V) B( P2 s6 g+ t! O

; @* J9 U8 {& o+ y5 r$ H; D]
' l, f6 M6 M4 i; R9 V

' p9 H9 Q) w; ~- W/ v& ^; I! kend

* {, b; F- N; a
2 e/ }% E/ p  m5 v& [  K% a3 Oto do-trust 4 ^1 [+ n: y! Z6 s9 ]6 g! o# _
set trust-ok False& T" N5 ?( M4 q5 d% s
' h/ j: o$ N5 c5 [4 G+ O7 {

6 S/ P/ ?: ]$ e" y) A& Qlet max-trade-times 02 }* ?1 G0 l; l4 t: z8 r# h- L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ Q/ W) V, q5 v: U: Q7 o6 |) Slet max-trade-money 0
- G- J" _& G& U+ [/ P- c  i4 kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( n' x6 j% k; O) W; y  m" o) d# ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# [. @1 p  U$ v# O; [7 U  ~6 c

% B( m% ], E6 C' w; U' ^get-global-proportion2 s' t+ J; ]7 ?
let trust-value
# {0 K- I* k4 d. J) D8 Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: W- ^4 e, u3 D. c
if(trust-value > trade-trust-value)+ `# A! f; O# V/ [- t$ b2 w, R
[set trust-ok true]
, c1 C, w7 U: D1 M$ @4 bend; n3 a6 L! x* f3 |7 ?2 f; L% M
% Q* `1 s% G. \9 ]% Y
to get-global-proportion& y2 [9 @8 ~5 {: Q. w- B' g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 S1 u( R3 }- B0 |; N  t[set global-proportion 0]* T+ V9 A: u0 n
[let i 0
% q% `/ k1 ^5 |- _let sum-money 0
2 k, y! ~' ?- G0 B# W( p7 y8 D9 bwhile[ i < people]
: S+ L1 X3 U5 K8 M2 a[
4 L2 P' P$ H2 N( `! lif( length (item i& p6 W2 _3 X6 W7 T: T. x7 F
[trade-record-all] of customer) > 3 )
0 B2 x0 n* ~% k( ^2 L; }% b2 l! M/ }
[4 n8 O: F& D; a$ r* J; |7 n) g9 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: M% [$ @) L, y5 ]2 t( L]9 @+ {, P  L6 Z, A8 T
]
2 P: d. w; J5 K  P* `let j 0% W2 l; c: l& J
let note 0
! T, g1 U% s- A% R, C( w$ A; zwhile[ j < people]' p& y' F( T4 y$ m4 D! O' t, c: B
[
9 R* Y& R( V( H( Rif( length (item i
/ w2 g3 G# Q) Z# J" C( W( q: S[trade-record-all] of customer) > 3 )

8 E; l: B- \# \8 |$ |& H& J: i[
+ \* t* o& O1 x5 r* tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 u- L6 n) q& d& i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 K8 v7 k. W- ?, t: y6 n4 M
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( V  P1 O3 F8 a# F2 m% f  u& f]
7 H. S4 Z' a% P# Y0 v]0 }! _& a8 f, K4 a
set global-proportion note3 T; H/ p2 e+ z  H6 @& ]  c5 t) ~" Y5 W
]; L# F# S, ?6 @0 v. i
end( b- J; ?! Z* ~  ]0 e% P( K
4 g3 o3 t4 ?1 i. B
to do-trade
; E! |4 `% ?  @;;
这个过程实际上是给双方作出评价的过程7 f; z& B/ r" v: F1 y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* M& o/ ?" T6 z, {$ y$ ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( T* V2 N0 W- [
set trade-record-current lput(timer) trade-record-current
8 h4 f* H- {1 f! r4 X; \5 k;;
评价时间' h* i; F  T3 M6 H# ^2 ~: F
ask myself [' B3 O2 ~! J# K+ t3 @, K% a
update-local-reputation3 W0 t' E% W* E. G
set trade-record-current lput([local-reputation] of myself) trade-record-current& x$ t% F  k5 h1 A9 {1 r
]
. s( j6 |) m8 ~# z9 bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 Z0 B- u" a4 e;;
将此次交易的记录加入到trade-record-one! Y; L* c- W. E( y( m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ c7 R1 }! D& A1 @
let note (item 2 trade-record-current )  T* Z7 [6 K9 M: M
set trade-record-current
# l8 R2 J! e1 G(replace-item 2 trade-record-current (item 3 trade-record-current))

0 R: X) s' S$ c  |, w" ?, E0 zset trade-record-current' w* I- F8 E6 U( N/ x2 E7 f3 {
(replace-item 3 trade-record-current note)4 A& R& B) ], u/ T7 Q3 `9 n0 \: ~

& s4 S! {$ w# A( f8 }! u5 h1 G9 p
# h4 h3 W: N- q+ s: M
ask customer [
! f$ ^4 I. i" w- ~  Iupdate-local-reputation
, M. s3 U1 A; M. b: G0 jset trade-record-current
9 u  `. i* n/ n' q' q$ G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; A0 U* ?8 ]8 {; A
]
  U. \8 D- c* M
5 s9 S2 W2 o: B& v( c7 G

4 Q* q& s4 l- O. Y6 `/ F+ o; b  gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! c0 k0 r5 L$ G# {6 ?
9 {# s  Z( Q! d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 {* V9 p# h6 U# c) P
;;
将此次交易的记录加入到customertrade-record-all
% s" V# R& o0 Gend
7 c) Q' k" R, h- V$ F% ^
( c$ U2 ?- t( ~to update-local-reputation
. I9 r3 K0 [0 Z: jset [trade-record-one-len] of myself length [trade-record-one] of myself. X4 }, X. E( d9 ]# t, ~' S8 o
, y5 Z; N) H& p5 m

  R; {. j! D8 K, g3 T;;if [trade-record-one-len] of myself > 3

5 N& j4 K$ r, N/ o. e3 `update-neighbor-total
4 p5 H. h1 D* N;;
更新邻居节点的数目,在此进行
+ s8 V+ u8 A* Z) q  k$ S1 Clet i 3
+ X1 D; ?0 I# i/ m5 l# b% slet sum-time 0  x3 G- M' l% R) O! I1 k& `2 m
while[i < [trade-record-one-len] of myself]
9 N" J' J/ n$ T  O( i) V; h! F[
$ E9 x+ i' _6 F" c! T: D1 Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- v5 s0 m5 P* [/ h
set i' o1 i6 O) G$ c
( i + 1)
7 w# T% J. C% c) M9 l
]" v0 W4 |3 q: v: i) [
let j 3
2 L2 \% r5 ^4 [/ J) v3 glet sum-money 0( C0 Y' J& v- }
while[j < [trade-record-one-len] of myself]
4 }' W3 v- U0 U+ |, Q9 @+ M4 y[
) c8 b6 V$ _* V3 C! w+ f7 T0 W* x4 hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 [$ |8 \7 T8 l/ oset j
2 ]6 z! g/ X; r  }) o( j + 1)

* _3 E1 r* m6 c& c2 F+ C6 ~( W]
- l5 }* e/ g1 p  E* X0 @  x! `let k 3
6 M# _" j* F6 K& t* [! \4 b) f# Qlet power 05 c; L1 H7 Z& q7 @
let local 0
. B2 W7 O$ P4 X' I; L/ owhile [k <[trade-record-one-len] of myself]% r$ j$ g' U1 _! W, v
[
+ n" ?1 h. x4 i3 ^# Iset 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 }+ d- Q) A& D5 p7 N1 w: f
set k (k + 1)
* k+ _2 A8 L5 I  \]! W9 \/ d& G* H- |- i
set [local-reputation] of myself (local)
4 P, x& C3 N1 R1 Q6 lend
$ W: f+ n& q1 e  f
$ J, r/ T9 w6 ]- N: d- O* ?to update-neighbor-total2 ]4 k+ z! z* ]3 j8 L

+ y, l8 u4 A  l+ Z* vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( e* C1 ], ^3 Z; G/ g3 g+ }, C) d2 Y2 I0 O* G

5 e0 s- v6 P. l6 F, Dend
+ F* `4 i' }( ~; p2 k  `4 d
  I$ r8 m( U0 Z0 X" G( ]% L/ uto update-credibility-ijl & L2 d% r3 h. r) Q: k& h" H0 m/ v
* W2 E8 O5 q& g1 @" }( P% i/ n; W
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
7 p+ a$ I" S! D. G/ \let l 0
1 j0 m! y: x% u0 P& d/ Fwhile[ l < people ]# y, `; l; Q% `5 u, i' B' L/ e+ D
;;
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3 |( |4 i7 T; H" \
[( U0 R1 _: l/ O  u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 [/ f1 |8 v7 U/ ?if (trade-record-one-j-l-len > 3)
$ z  c- C/ x% P( Y, }# o[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
, u2 z7 |3 w9 a- P% D* glet i 3* {5 b3 W+ `! u$ e
let sum-time 01 a! k# l" T/ T5 @3 l6 _2 V
while[i < trade-record-one-len]* ^1 t$ ]' O2 ]: P8 b& @
[
0 P- g0 l) z. o9 C3 Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" R% p2 s; O8 z  Q0 J  R0 Yset i7 L: {- m" j1 K
( i + 1)
" f# x; C$ o5 I  K: y( P! j/ @9 V% f
]
/ \" S) X) c$ A% u1 L3 slet credibility-i-j-l 0
, J6 ]% V7 L# D0 @9 {, s;;i
评价(jjl的评价)
8 ?# V* u9 g5 G* x5 alet j 3
7 Q$ o% t2 i2 _/ g. R" n1 }let k 4, w, H5 r2 Q. B( i8 Q3 S
while[j < trade-record-one-len]& A9 A/ A. p# a. b5 y
[3 W9 E& U2 d1 d$ }# J4 Y6 O
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) o+ I) N+ f' d% D) ]4 n+ |* x& G
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)
  ?3 W$ X3 [8 J6 m1 {& \! o: Kset j8 U9 C3 k: I: j9 g
( j + 1)

  n9 N0 u& J0 }, m]
; B, ^; k) ~7 E2 ]* N. w" f" fset [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 ))
9 a) B, z8 L# a3 c% N# `
& ~) x' z) A% u; K
" `5 P5 H0 h% C2 ~7 n. a5 Y# d4 {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ S$ _, s+ N! ^5 A/ ?, ^7 `- d;;
及时更新il的评价质量的评价
# O4 @3 E3 Y$ A5 Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ T7 m* u" |7 k" |3 [
set l (l + 1)$ k2 z9 ~- i7 g1 Y$ x2 t
]
1 i# A' I  V) \8 k: K5 N" Kend; c- D4 Z1 D1 t, U, z' H

2 I, P1 P8 ^; nto update-credibility-list
6 Y" v$ Q4 f3 v+ vlet i 0  A7 ~. s% A, {+ r4 R5 U* H
while[i < people]! J0 J$ N( i5 K& e; H6 A- u6 y! |
[
9 x9 P, C, M! E0 N( rlet j 0
( x* {# A6 Q8 Llet note 03 m$ o0 \; w% z7 s8 [! E) Y8 b
let k 0
  {2 m/ _' {) I;;
计作出过评价的邻居节点的数目' [" v9 M; D9 u' w9 L& |8 ]6 _
while[j < people]+ t) a$ W* p% L+ N
[
) f  j  q* D, r# R9 Z4 wif (item j( [credibility] of turtle (i + 1)) != -1)
) O' r( C& x3 R;;
判断是否给本turtle的评价质量做出过评价的节点
+ y1 ]% a0 A* ^[set note (note + item j ([credibility]of turtle (i + 1)))# \: W( b+ G& |' \
;;*(exp (-(people - 2)))/(people - 2))]
, M" B' `1 u7 @. M3 K- O
set k (k + 1)
/ Y3 A% k! D9 K& m]
& s+ N* m; v3 [4 N/ r, l/ kset j (j + 1)2 K, V, R6 g& P' Z$ v" p. n* S
]6 U" K+ T. l5 j8 x. @' z
set note (note *(exp (- (1 / k)))/ k), d' X% W% x3 }
set credibility-list (replace-item i credibility-list note)( _3 i+ ~( a- T& d/ @+ D6 Y
set i (i + 1)
. Y% B; S+ W, m0 B. G]3 u  j8 {$ H4 G7 }+ A: r. m) W2 K
end& H. h* m# |' S

# q3 ^8 i- R! P0 ^: ]0 e' wto update-global-reputation-list
' s2 z  w, D0 Q8 y' |let j 0! n  N, D# k; x! `8 A- }! E6 I
while[j < people]% c, e5 v* g4 C8 s" h
[
; i, N' ]- U9 c2 K! }  glet new 0
/ J3 d4 Y0 \& K; K;;
暂存新的一个全局声誉
( d* w' t. b$ vlet i 0( e, j7 M, r( _2 x; D+ G0 i
let sum-money 0
& `( k0 V! L7 Z7 e8 V: Ilet credibility-money 0
5 G; S  M2 w3 f+ L& f3 C, }& ~while [i < people]
4 O' T3 j0 F& Q5 S: q" b# }[
. o+ r  s. x: g: s1 M* hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 v0 e" J# s& }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% u5 z3 p; w+ M- g* bset i (i + 1)
0 r2 Z2 `: D+ Y]
& X% _) F8 F: xlet k 0
- D; y) u( X$ ^let new1 0
8 L0 I9 t( e/ J) e) Q8 G: k/ Mwhile [k < people]
# R, y0 B/ }' B# w[
* Z2 c/ Z! Y/ X+ y3 v, Y- W$ rset 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 O: h  {. Y8 o9 Rset k (k + 1)
2 _6 _; R3 e7 q8 _]
5 [, G- B5 ]# F! K7 ?3 z3 p! Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( t+ V' ]' }$ ^8 y1 ]8 S" J1 Zset global-reputation-list (replace-item j global-reputation-list new)+ ?7 a) K( U9 q5 e+ G
set j (j + 1)
1 s( L) A" A% ~, y/ Y  y# Z) G" _8 ?8 r]
7 G) k+ |: r- bend
& ~' v. \" Z. G4 ~2 s% w3 n" L; n3 P1 j  K+ W: i) |; P
5 c$ u& S: B% M+ ?" r8 |

3 w- A& A2 L( l8 Jto get-color( ~; _0 w  q% B! I2 n+ i

9 @$ \+ ]# m8 x, k2 Tset color blue
( L- l+ d$ C$ I# [
end$ ?2 B8 f5 n* V, a  \% s, y' j: |
5 X' l4 \) D. O) w# o
to poll-class$ ~* X6 [1 i6 o5 V3 ]* h
end( r0 C, @. \; k4 g7 ^

) ]% X2 R, B9 N' b3 U" p) J8 ]& Jto setup-plot1
& ]: h; L% y+ |2 a7 |+ O, e$ m
2 B- q# H8 C" K* u( E2 uset-current-plot "Trends-of-Local-reputation"
; d4 `2 @& o2 D4 H
% E0 s6 `. H9 v; u, F  i
set-plot-x-range 0 xmax
& L9 m( p1 V4 H% M

& }9 \& c* p* K& p6 E6 C1 rset-plot-y-range 0.0 ymax
) L0 o, v  z+ j# x
end
" O3 ^3 k2 b0 K5 l- F7 }. r
+ w" F% Y6 a2 l0 M# M8 o- k) d& J% lto setup-plot27 F" E& A* U* o- m5 R# b

0 j+ K! R5 g7 Y3 S& F" L3 X7 }set-current-plot "Trends-of-global-reputation"

. U! O4 T6 S1 W
7 J6 J2 g3 `; X9 [1 {set-plot-x-range 0 xmax

' @/ k( l0 O6 S* c1 ^) c8 D- g( R8 z( z& Z* G" n& C0 {
set-plot-y-range 0.0 ymax

% \+ z0 G! O- {: Q- send$ W+ M* J8 R4 n3 P5 Q8 {
2 S- ]9 K* k: \4 b0 C4 ]7 V
to setup-plot3
; j* |6 a; I1 U) J; A/ O- v
0 E7 ^, C( R- I0 l: r$ a3 Lset-current-plot "Trends-of-credibility"
+ e# w- N+ z8 H( ~( l* P! i5 A( K
5 S+ B0 r7 C! {
set-plot-x-range 0 xmax

0 m; b( o( k2 W2 Q. K- s, W
# V2 {7 G5 G* j" G) C0 N& h( oset-plot-y-range 0.0 ymax

- c4 z1 K: h: M% s* a2 [0 D! kend
; V/ N9 K+ ], z& |5 [9 j1 }9 f
to do-plots
( P" |& d8 y# A, B  dset-current-plot "Trends-of-Local-reputation"3 V0 ?" W3 j- q; e6 p
set-current-plot-pen "Honest service"
+ c: y9 l4 W( F8 \8 v( L8 i# Kend1 y$ E- v' V' B2 [: ?
. M+ ]8 v& J6 ?8 J6 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.5 ~0 n( X! Z$ p. Q2 W
( x% }! s6 y& N; D& p& f: v- s
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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