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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:
& D" n2 o$ q- O5 j; [to do-business 1 t4 |% a1 |9 B* A. i3 Z
rt random 360
; C% o) T' Y2 T- ^* a8 J' y, t9 X fd 1
' C& h. A9 T$ S! Y: T/ w: e ifelse(other turtles-here != nobody)[
; R2 J& g1 f  `0 i6 H8 M) [% F   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.3 m" ?5 R" h" I1 t
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ x; o2 r; E' C. f, a' [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. ?0 L; K# g0 T
   set [trade-record-one-len] of self length [trade-record-one] of self4 B- v+ f( Q# z0 ^& v9 \2 p3 K
   set trade-record-current( list (timer) (random money-upper-limit))
6 D: _& h6 F3 M
" ?' W% C: A" {3 f& z问题的提示如下:; j! w( r! u! C$ J

  g+ B1 J1 Y& r3 i: o  l! {error while turtle 50 running OF in procedure DO-BUSINESS
. S& g  N! F) y4 X  called by procedure GO
0 l" Z4 A" |" ?4 T& gOF expected input to be a turtle agentset or turtle but got NOBODY instead.) Y# y, o1 V  t) J
(halted running of go)
% z- s1 B2 u/ \' n! X. L2 j4 d7 d# ]4 g) R! ]/ T
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~~
# N& e) w2 [' i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
+ E& l) d. h) a- s: ~6 \; v, m! \0 N' {globals[
! s' D- Q- s$ Q3 [3 c$ i+ ?9 f5 i- E5 hxmax
5 g" z" M) q+ E# M+ i. oymax
$ T* Q+ a) o. [  P. o' Tglobal-reputation-list: H- m2 Y8 n' v8 x' B

( |5 a1 R2 V3 H;;
每一个turtle的全局声誉都存在此LIST
# A8 e. @0 O, s( w4 K) kcredibility-list
5 c( ^; Z: V; {! [' ~. w' b;;
每一个turtle的评价可信度2 I1 p+ J& U3 ^3 |3 |( X4 a7 B* E3 }
honest-service* N$ z; y7 @$ `+ V6 V
unhonest-service% I; \2 F' u) _$ `: H5 e1 k7 Q! o
oscillation
) F! }: I0 z9 u8 U% prand-dynamic5 F. q$ q# [9 J6 w" j
]
4 p+ Q" b# ]5 d1 P8 A
$ G5 |* ?! `! H2 k0 }: jturtles-own[5 k% S0 X, e0 K: ^  W( q) o
trade-record-all9 [+ \, l& c- C  N. l% w6 y
;;a list of lists,
trade-record-one组成8 L% W& J! }+ u1 o4 B5 g% F. r
trade-record-one  K; J. x: _" E* b$ j% l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 x% `. J' A5 h  Q' `

$ F4 F3 n! v4 b: {! I' d1 @3 z;;[
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]]
, n2 h" {* p! i& p  Y/ Ftrade-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]$ W' g' K, j( N! |  T
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! {) ]& [% h8 a) X+ h, l
neighbor-total
3 J  I0 ]5 P2 P;;
记录该turtle的邻居节点的数目
' l0 y4 y3 ~1 y8 j$ N, d) ktrade-time
6 ]" H! u  B$ C8 H( }. _- O% B2 K3 K, _;;
当前发生交易的turtle的交易时间: ~# A" ~0 B6 Y0 K
appraise-give
4 Y+ Z  h! R' L2 H/ v. x5 Q2 U. e;;
当前发生交易时给出的评价8 u4 l9 O: y/ k( X% Z! ?
appraise-receive& e2 ^" h8 ^# h- _" w) y
;;
当前发生交易时收到的评价
$ ^2 s# |2 e) \; r. g  Oappraise-time
( g7 ^1 v7 V: g/ I" L;;
当前发生交易时的评价时间" d8 k  J2 F! k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 ]' _8 l& h, j1 a+ x( C  rtrade-times-total
7 H: G/ D4 `+ c9 s+ N;;
与当前turtle的交易总次数
) R* W$ s5 o: s( G1 Itrade-money-total  f2 b+ {3 n! L! i
;;
与当前turtle的交易总金额% V( D9 B7 \# Q6 v+ ?$ N
local-reputation
9 \. v" \/ K" w7 }% }6 {) K% G! z0 Jglobal-reputation, S- Q6 {+ b( C+ }9 d
credibility3 P+ V8 C) u4 w- i2 H  a# {
;;
评价可信度,每次交易后都需要更新5 x* v# z! `4 T" \. L5 x
credibility-all' c8 Z; c: r/ Q7 w  f) X: g2 a/ W: d4 f
;;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
3 O. f( Y8 i, [' {7 O* I2 y9 ?' I" _& s+ e/ _
;;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* N" ?7 u) [  d4 y; i; n
credibility-one( P% x" B8 X; z/ A- u1 h! U
;;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# ?- t7 |0 t4 K/ I1 ^" a
global-proportion9 ^: L' j! c5 |  N5 a
customer
; {5 m7 N: J& U! p; Wcustomer-no& w% }5 p4 J9 G, R8 v
trust-ok
( ^: j; b' e& R* i' S9 @trade-record-one-len;;trade-record-one的长度6 w& {" p' u: j% I5 Z
]" `/ A" B) }; h) A

; G% K; L1 K( R9 U! g+ L* f;;setup procedure: o# I: ]& J  E5 v# t
5 c& F/ e8 N8 e8 R. ^3 o9 P% J' v2 b
to setup
) x3 N6 V" N4 v" f0 Y1 f: X1 L7 E% y  j4 b; j1 P9 a
ca
0 x! u% K0 e) @7 b( G% I
" o$ k( d3 l: R" j% j" Q
initialize-settings
9 B, T  V7 _- c6 I8 c
  @" p3 w/ z+ z+ y
crt people [setup-turtles]

) W0 @" {9 X& P6 }/ Q
# b) V/ O* p' l' C' F5 R; `- yreset-timer

) `) h" c8 Y6 a- R" b' r+ O$ [3 k' x* Q* @# x5 `
poll-class

0 I; |, |! P: v* q# S) V# s# Y
  A' W2 t" B  P4 F$ }; g& jsetup-plots

/ O8 A) W; Q+ K( T1 u: l
% Z6 Z5 z6 v! c9 O/ b( [" Bdo-plots

; K: q- U" R: p- B3 u; K4 Zend' U9 \" b7 L- _) U
5 ~4 c2 |$ H6 B0 s3 `& ^
to initialize-settings; {# J6 a$ U$ C' H1 f
: L# h; O# X) Z: K/ r. r
set global-reputation-list []
$ s  d/ J2 ^( ^' f  s& b1 }
& b: U% G+ {: `3 Z7 f; q1 P
set credibility-list n-values people [0.5]
; k* D8 D5 h. ~8 [: p! Z
5 ^' p" }# X: ^) b' \! T
set honest-service 0
3 G; t2 Y8 P) z4 ~. H: G  Z, t

" ^5 {, D8 o# C0 h. Q! eset unhonest-service 0

( a& ^( x+ T5 t) k( O0 n0 B% y
9 s1 e7 U3 b8 w2 |' {set oscillation 0
2 @. e. l8 E: x

# \3 X$ c- V  j% J" C9 tset rand-dynamic 0
/ m/ I+ U" z  G+ z' S& R- d
end
! t9 o, i7 y* H& k" q
" C' W7 h! W5 I8 V4 ^& `9 v1 h4 Bto setup-turtles
8 z0 H2 `" M" f, K/ v" Nset shape "person"
4 F( |5 W1 A3 U7 Ksetxy random-xcor random-ycor& N- u* h* \  U. T( \/ Z
set trade-record-one []
" ^7 i1 t0 [. I: ?% v4 K) w
1 W* F) h7 a8 n" M4 q5 l
set trade-record-all n-values people [(list (? + 1) 0 0)]
& H6 _8 q) W! p1 A
, @: `( b6 l9 W6 q+ _
set trade-record-current []
/ b" e' ^( ?5 U+ R" qset credibility-receive []
. ^. p& o' r, f6 Yset local-reputation 0.5
' I0 j) `; E2 `( s: k0 @# kset neighbor-total 0" Y0 V0 M! s+ c  z0 v1 o
set trade-times-total 0
' e, R. Z1 B0 E' J# Tset trade-money-total 05 O& Q" G- v/ J- Q" @* }; ^  A
set customer nobody
( n2 V# ~# N) C; ?1 Q7 k5 u* \2 Q5 Oset credibility-all n-values people [creat-credibility]
3 K* X8 L' C8 Y) J+ Jset credibility n-values people [-1]/ ?" B6 c8 V8 C4 h+ `! A7 l& T
get-color* L9 u7 t4 t, l+ G' I' y
( V* Y" Z8 N+ {
end. |4 p' b% B. {7 n

7 W- p; i& l$ d0 p3 n: ?; Y- I! Rto-report creat-credibility. Y4 m& D3 |4 U& u
report n-values people [0.5]# ~: F1 \  x4 }' R2 v0 {
end7 S8 `& I2 s$ x
) q0 Z$ @+ `2 \# w
to setup-plots* s/ [0 C% z/ k7 E5 s

& C# {( ]9 y1 E& c! d9 t3 Kset xmax 30

4 \+ G$ D# C- X- c+ X$ e) |7 l3 L) T- a; y/ L
set ymax 1.0

, ?/ k6 i4 D. r" [/ |: |
/ R* z: M. ]* M% I, A* e: Cclear-all-plots
5 F$ g4 n$ }7 n! J# W; i& K* A9 I
% K$ t% E% H. `7 I: d2 c$ W1 G
setup-plot1

' k! p* z  ^) w, F7 u4 H/ I! ^9 W3 m
setup-plot2
: P' a, x4 M; q1 d7 N# @8 ]* X
" R" [# Q+ _, y; `, t4 g
setup-plot3

) m: ?& y2 x: Nend
" n4 A" x- e) r+ ]% m8 U5 w3 W% {% N+ [
;;run time procedures2 r; Y8 m* s- G8 ^# e8 d2 x

" q/ Y1 }' b3 `( eto go
+ i, Y0 G- Q2 i( L* G: {( o  W/ V
ask turtles [do-business]

/ Q% Z* r7 u' [8 kend
: }0 r  O% J4 E8 I4 _: D; R8 h5 O
to do-business & N, `6 b' T) {' h. O3 x

! @( r% q% h& h5 n- G) o
- k$ g& m4 w: wrt random 360
( w# U5 p: g" m, t$ H2 t3 g

0 v. v! I( m3 E+ l8 o# Z& Nfd 1

  b& K1 p( g. p0 t
+ f; ^5 ^' U1 p  M! ]5 }6 b; Bifelse(other turtles-here != nobody)[
! y$ N6 O, Z6 d+ U4 l: `

- X9 H, A' o. bset customer one-of other turtles-here
9 T: K6 O4 y, x# ?5 K! b

0 R# h' }5 U$ B# k1 ];; set [customer] of customer myself
. A% j2 {( w( R5 Z7 D# o4 c

  _' g$ ]1 u# j) ]set [trade-record-one] of self item (([who] of customer) - 1)1 w6 D4 U5 f4 h
[trade-record-all]of self
" W* z& L9 P, P: l9 Z. i- j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) ?2 O" _- k. m! g% E
* l: U9 ?- A3 O! k$ _- w# T6 `" {set [trade-record-one] of customer item (([who] of self) - 1); J7 w: w! E; x- Q. n0 z% ]8 P
[trade-record-all]of customer
# z1 L3 E* K  ]1 Y. @1 b. ^) N" P/ G$ T
/ e. d/ d' ?4 Y$ X$ B1 t6 T/ U
set [trade-record-one-len] of self length [trade-record-one] of self
/ b: R- d: y! J' o

2 F& A, x  m2 u. h+ D: uset trade-record-current( list (timer) (random money-upper-limit))
5 m+ A% K# u/ N* i) z
9 i5 ]" k% c" ^5 S$ J1 w% N( a
ask self [do-trust]" s  N: ~4 T- ^; E
;;
先求ij的信任度
( [  A+ x% u, [' N+ @/ D: j5 h- X; O3 ?6 m$ W
if ([trust-ok] of self)# [1 A2 Z  b5 W2 z
;;
根据ij的信任度来决定是否与j进行交易[
* e1 M/ e# \, o  H5 xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ \! m! f, }* d: K1 g
6 u; W6 S' R. u$ x0 O5 B; A+ R
[
; Q# [! Z- f' W
/ V* }8 T/ n: l3 O3 y+ b( w
do-trade

# {: |* {7 P) n( i: T4 `, t) Z) @9 N" |* w& J+ c; x5 ]- V1 E
update-credibility-ijl

, E1 W: K0 V  A, N. p
  G" j+ b9 Y. l: G$ wupdate-credibility-list
# J6 a" M2 h/ z- C

- C' |: h4 E% D* d1 K5 w
7 U2 |$ [( M0 k; f4 u' V' qupdate-global-reputation-list

6 Y, X* b8 F' ]
( w3 }6 Y; k4 S6 lpoll-class

$ z! b! H6 r+ }/ B) o# P* g5 d/ K9 W8 H
get-color
# y6 m( |' _  N1 Y0 V& ?# @) ^
3 M$ w- S  T1 g( e" P5 J. Z
]]6 ~& ]- Q- P. T* `2 J
5 d9 J6 `* @  j8 }5 {  C) m
;;
如果所得的信任度满足条件,则进行交易
- D" K8 I0 ~$ [' G  c
2 _* q/ u5 i; y0 e[

; _" `) J: c4 Z& ]0 K
! |. w1 ]$ h/ C  J/ L  ^; Y+ Brt random 360

7 o/ k0 G$ x/ ~$ s! u; h7 t( C) _. D/ P& z' N9 W8 f
fd 1

" Z6 V! C& E3 @7 y5 `/ Y1 `) l8 J8 U1 ~$ O& M* \7 _. b
]
1 q# N2 F/ X. O/ w  e4 S+ z

1 }  `1 r. h1 S% _, ?3 ^end
4 X1 G' n( L+ f' B. T2 r5 K* z
: }7 f: H! ^9 ]8 O' O
to do-trust * x" _6 L) ^# A% m5 \6 w
set trust-ok False
+ F; z0 t  I# ^5 n3 b
7 f' l& L. e* c6 L
) e7 _5 u2 i8 s; m& n3 B
let max-trade-times 00 ], t! ?: T) H7 J4 `6 e6 s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 b7 L) V6 s0 B
let max-trade-money 0
3 C# |) e  J8 {; D9 ^& Q" Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ T3 g" Z: |: Z3 R: S% {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ ?  y4 R0 [% c9 G& b* D

3 F5 d5 P) C# o

% c" G3 h. i/ }9 Tget-global-proportion
) I( ~6 t3 O. d/ c' A- M7 N0 b/ jlet trust-value2 Y1 S1 m$ _4 C& k( P2 j
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 I0 y& I" O8 V
if(trust-value > trade-trust-value)
# M1 J3 `; {1 Q+ H0 S[set trust-ok true]
( g6 E0 N4 g" ], I- ^end
! [, m+ G3 y$ N. X2 u9 \$ B/ [! {1 i7 [: X" n
to get-global-proportion6 e: N- {: {3 @0 Z0 T) p+ m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). A$ E! k% O# L$ A# H, D. [
[set global-proportion 0]
, |7 c0 d3 Z) x5 Z: ]' T[let i 0: I0 E. _7 E! T! k
let sum-money 0/ s' ~$ K0 U- |' H
while[ i < people]7 f  F- Z! l; D' ?
[
$ k( c- ~# ~2 Nif( length (item i
0 d. l/ S: v. h8 D5 Q! d5 y[trade-record-all] of customer) > 3 )
) R( h  O! a: q) r' L0 U
[3 @) g" M# H5 i: M  P8 e+ k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# Y" `. r* I4 T% u( F' t' X1 t( h]
  G% C4 G& r1 P]! x, Z9 ]7 P9 Y
let j 0
9 |* ?5 m1 W/ T* I2 T7 Llet note 0; i% s4 S4 g9 E/ y( z
while[ j < people]" }$ B7 ]2 \5 Y
[/ R: V4 g0 G# W/ t+ \1 {! f
if( length (item i0 M/ T4 C2 U3 ?# K: {$ S/ p
[trade-record-all] of customer) > 3 )

$ `/ u) [" o5 ], T5 L[
; R' y! Y) W/ i4 m$ ?' fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% Y; s5 T5 k( j! C# c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 f7 _" k( z% b4 t9 y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" x( m& x1 H! _* L) X]
1 N  U# A' ]+ k* t- k]$ ]1 k0 R( P$ D
set global-proportion note
8 R+ P6 P, Y: b5 ^]" K! |5 @/ o: A; @" c
end
( y% F, I. ^4 \' W; R) W  ?) e$ Y/ ]
to do-trade3 c5 T1 u! w7 \/ d- v5 v8 ~2 |
;;
这个过程实际上是给双方作出评价的过程5 Q5 G, D' c& T6 n% k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 p8 N7 j. z2 g# [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 E( Z$ \/ C0 K0 x, [
set trade-record-current lput(timer) trade-record-current
" g. N) \1 b# }+ v( e" f0 Y;;
评价时间1 {1 I$ e$ ]  u$ t5 t0 k$ E8 }' o
ask myself [& p; m8 y. T7 i
update-local-reputation
8 z6 V3 W0 H% G  T- l) \. D6 tset trade-record-current lput([local-reputation] of myself) trade-record-current
8 b' n; ^5 c2 z: T2 q]
# m! C" R, z' o) f2 S, r, Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 N; ^2 P( g9 x;;
将此次交易的记录加入到trade-record-one# z& m$ }3 {$ k( Y8 l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 u/ R5 p6 j7 w: B! N! j
let note (item 2 trade-record-current )) @( F3 J0 D  g* Z. i8 Y
set trade-record-current, P/ N: E* D4 `. v, O& q
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 E9 c  E. t( F9 f( C. X* Y) Z
set trade-record-current, x3 M, s7 l8 \* ~% V0 }. |
(replace-item 3 trade-record-current note)( l; J5 O+ U6 A' o( c8 ^8 X
' l3 s5 q! b$ W$ X4 `- E# t, j# m( ~
6 ^: l& ~7 F( J% e3 [2 y' I7 T, [  n
ask customer [: a- K0 F+ v' ?* k/ ]
update-local-reputation
; L8 W* @7 |' ~. U' Cset trade-record-current: F" e' [- U; k) |0 N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( o* m5 o# j- s9 O  C/ E( B]
+ u) ]4 Y$ \/ l1 x4 H& |" }4 f5 g! ~5 O
, w5 X, m- {7 |& Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, h; r/ E" t  T( g! a1 b2 e

; _$ R& {. g: ?set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), K1 M2 Z( K! {0 B
;;
将此次交易的记录加入到customertrade-record-all- X. j0 A' O; s% ?. Q
end/ U( Y0 r' `8 ~: h" `! _

) I: c6 @# K) j+ c( ^to update-local-reputation
  B2 j! F1 K0 D' S3 aset [trade-record-one-len] of myself length [trade-record-one] of myself; r4 v, o, h' R% {, k. |
! t0 n- m) ]: P* A( W0 {- k

: F8 v7 x$ `/ W& D7 i;;if [trade-record-one-len] of myself > 3
" u+ ~* `+ _& D
update-neighbor-total
5 S. u7 Z- s* |/ q4 K" q: z;;
更新邻居节点的数目,在此进行
! a7 R0 h& K& w* J  {let i 3
3 A/ C: s3 L; U8 |5 ]let sum-time 06 Y( A( B2 r# W( X0 N
while[i < [trade-record-one-len] of myself]/ G5 R2 p% y2 J) R" C3 K* Z' W
[
, y" I  G5 V. K: Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 S7 ?, i) y; H- ~' ?4 ?% \
set i
% t0 Q4 r8 m4 W9 H+ w0 I7 R% u8 T( i + 1)
" Q) Z* m3 @7 r0 u: s' ^' D1 S
]4 K# M& ]/ W! L( d. J
let j 3
2 E  ~1 k2 {' T8 H3 Glet sum-money 0( x# U& g- }: B( z# f$ q7 Q: Q& I
while[j < [trade-record-one-len] of myself]5 T5 g' @0 q* P
[
, Y, r5 e5 E8 I+ T0 B7 Sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 Y8 [0 ~! F$ A" ~5 y* x  kset j
. x# C7 E" e% z- ]( j + 1)

# B+ W0 n5 k3 L]3 F8 _4 ~% d, K! c4 Q
let k 3
7 r6 D9 M. l) a$ }$ x. mlet power 00 t! o6 t1 K- b* U0 e' R# V
let local 0
, J8 L2 h7 q4 Vwhile [k <[trade-record-one-len] of myself]* J: t0 x# r# ?& ^
[
% F* V9 \  X% j' K' Gset 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)
  x3 A; A& E6 k' R3 H! o: o6 b9 Eset k (k + 1)6 q; b- N; V, d" L
]
6 L8 F  L5 i2 [5 [3 N4 zset [local-reputation] of myself (local)
' i& f1 i0 ~+ A- H3 vend) v% y- C* I7 }

- Y5 [3 w- h, g* o- H) ^to update-neighbor-total. c2 n  l- }7 E
: a- u2 J. V) i! ?. z3 h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 E' j  ?8 V4 \2 d0 U" G7 Q/ t6 S' Q
/ ?+ e& Z. v0 q7 ?! Z. W. O

' W* D! \8 u3 m$ Vend8 t4 x+ T/ v( q1 y% z5 G5 P
8 W# f! t' a( L2 J( M1 ^8 U
to update-credibility-ijl 4 {) y8 F* J+ o* Y6 U6 r8 E

% N1 i( |" ^5 h( k! I3 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。
$ Q; w- n3 S6 m7 ^+ y" z8 e, x. ulet l 0; p8 u0 u$ Y6 B  p. E
while[ l < people ]4 q4 e$ i; M' Y) ]8 X  \# r* C: L
;;
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
' G& C' t, h* T[6 V  N* g7 J9 |* B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 e' l( ]- i7 G' Fif (trade-record-one-j-l-len > 3)" I, _5 d7 j, A# t  u# s* b
[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
( F  E! E5 U- O5 Wlet i 34 \& m* d) X( g1 _8 {9 j4 g, G
let sum-time 0
/ e! D! b" S3 b7 X2 n" Zwhile[i < trade-record-one-len]7 D) V2 U' g& n
[
; q% |: x0 f. Y8 w& D7 m6 Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ k2 J& m) z% ^5 v5 M9 fset i6 g) k' ^8 u; L" P* W6 w
( i + 1)
- A, ~3 m9 J1 h2 s$ h# h$ Y! `
]$ A+ K, E) f, h
let credibility-i-j-l 0, j+ Z/ U5 I* A0 I
;;i
评价(jjl的评价)
) A9 x* q! h' l1 @8 nlet j 36 g: d2 R# ^- x8 Z3 a: m
let k 4# W# b$ h# s5 v' G3 b6 a5 W( ?
while[j < trade-record-one-len]
2 U! P; w8 k/ c  v- J0 N[4 c; N4 U) @5 K
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; K0 g! u2 S/ t$ a( S. h
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)' B$ f, c8 n/ G
set j
  X$ k% B- u) x$ P- k( j + 1)

0 E, K  m* l: i" a4 R0 U]  F3 j9 U% {4 L
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 ))
+ ?& w' _1 |& K( x, F: I% g
2 W# [: X) ?* ^% z' \
6 M9 I! I" n4 T9 K9 S- `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 _8 A4 ~7 n+ h
;;
及时更新il的评价质量的评价
6 C% c+ h2 p6 Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& l" u9 K) `1 L( p9 u
set l (l + 1)
" B+ j9 ?, Q! b  s1 []8 Q: ~, c; J: I9 R5 p& P: A
end- l( q! b3 V/ @0 a! M; r/ H, o0 y

2 M5 E8 q. Q* [, Hto update-credibility-list
8 j! @& B: Q' x7 xlet i 08 A' z2 H& N2 j
while[i < people]
5 r+ u( M7 x! s* b( W- R& A[
7 R) f( J3 E7 t. Vlet j 02 A3 {: `  C6 w+ d
let note 0
+ x% b$ ~" d: d8 x$ n- k4 S; ylet k 08 I* p# c) f* z. b$ k
;;
计作出过评价的邻居节点的数目
0 d; C- Q! ^3 m3 W6 E$ ?while[j < people]
$ C' T2 O' S1 W; @2 @[6 ~3 v  H* k* x% C% l; N
if (item j( [credibility] of turtle (i + 1)) != -1)8 M+ x1 w, F$ }& I" N: y- K
;;
判断是否给本turtle的评价质量做出过评价的节点
3 \5 G' Q0 }; A2 e[set note (note + item j ([credibility]of turtle (i + 1)))
9 l1 X) X+ p  H( H/ r& Z;;*(exp (-(people - 2)))/(people - 2))]
, J6 i- f. K" m3 x9 z* g
set k (k + 1)+ q2 T, ]) M% u
]3 ~, d9 A) S. T4 g* _/ I; D3 w
set j (j + 1)+ x: o! p4 h- J) I. }) Z
]
/ J, B! p% J2 _( vset note (note *(exp (- (1 / k)))/ k)* M2 H$ z. Z3 [7 J( O5 x- O
set credibility-list (replace-item i credibility-list note)
0 i# C! H( i; V0 u% S% Uset i (i + 1), ^& p1 G5 A* B' c
]
' h- A  W+ x; c; s- W# z: \& U. Lend, p4 v/ m& v. q. E6 z
0 A1 b$ x3 [* t# h* M
to update-global-reputation-list. Y0 ~1 O& ]. _
let j 0$ A( _7 l+ {' L8 g
while[j < people]
+ ~7 ?+ i" x- m+ p[
8 T* V+ k3 a" k/ t" X; ulet new 0& e7 @: O8 ^9 g! i
;;
暂存新的一个全局声誉
" s4 y# w# v0 h; g; C; Glet i 0
1 x/ Q) y2 y3 N. olet sum-money 0& i: ^; V" s, k0 T
let credibility-money 00 M, x% x6 K. {8 c" x# Z0 S: f7 |* V
while [i < people]4 @6 a2 @$ A6 T
[
8 I$ d; v2 \8 e4 [! w1 c4 `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ @7 p+ t# X! K0 {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 M/ l! Z7 v& U8 f0 h4 Q
set i (i + 1)5 }! Y! v: b2 O5 o* C
]' r" C1 o& B% w$ x" ]
let k 0( ^3 b6 s2 p; @" c" W
let new1 0
5 i6 z6 x% |! h# iwhile [k < people]
+ i4 ^# B8 i, K[' k* y$ l( D/ g! b% }9 a1 ]% E
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)
' f( q7 P/ k% `! Z1 |* S2 `. Aset k (k + 1)" o+ E, N/ n7 F
]
6 n- O0 l; Z- t% z4 nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" D; k0 N" ?, G0 K% C5 xset global-reputation-list (replace-item j global-reputation-list new)
$ T# K+ }5 A+ Tset j (j + 1)
! R: _" s4 `9 E* b: y]
4 Q$ F& t! {% X+ Y& O: K  Z; D) f& Rend0 w+ }$ J; d$ r( z, F0 o8 O' Q
4 z7 o" X: j5 k/ C7 \* R, b* l1 c0 Z

8 X9 ^: @+ M* y5 e  c' D7 V' j
% a! J+ G$ S: @) Q( Gto get-color
! G2 u' {% w+ C
) J: `$ N$ f/ c8 ~set color blue
, m( g; X# F  Z" x! c; w* v. ]
end
* `( L4 L7 i% k, m+ O& r* Q! ^& U# n+ R, R+ V- N# Y5 m/ W
to poll-class
' Z% [, p# W9 ^/ iend
6 H. c8 D1 @7 x/ j1 B, @5 [. T- w6 s* ~9 x
to setup-plot1: J2 {, b1 t# G
. g1 W9 Z* _8 Y  @9 i8 a
set-current-plot "Trends-of-Local-reputation"

/ d- G8 t; I* }2 @6 Z% L1 A7 z2 ^# Y
set-plot-x-range 0 xmax
4 Z5 r: B! X" j6 c6 i# b  g; y
/ E, R, K% A4 N2 u) o
set-plot-y-range 0.0 ymax

# t6 y  K' Z" @* A* A# Gend& ?/ I9 H" K( B

1 ~+ y5 p8 o; Ato setup-plot2$ k  h$ }; e- A. P- B. U
, o9 n2 D8 p  L% t
set-current-plot "Trends-of-global-reputation"

2 X/ n+ R6 V  e: |. x! G# M, L/ M' \  N( ^# A
set-plot-x-range 0 xmax

! |9 W* e- v! W; \3 k0 h+ X0 f* A) T6 P0 _) i: @8 l4 Y( y
set-plot-y-range 0.0 ymax
1 c$ J& q! R& W7 }+ X
end5 j8 b& h3 r1 Q/ Y4 D
; ~& D- J: n- s# n5 J0 w
to setup-plot3
5 a4 U) ?# i& r1 i' Z2 j4 W
% f: m) t# I: P, b: Nset-current-plot "Trends-of-credibility"
9 P6 D  U3 P4 |( n0 Z' I

8 x) u3 F* U5 a3 {) l- ]set-plot-x-range 0 xmax
7 K8 Z1 q( n8 T9 V6 E/ q, o: b8 r& y

/ B0 o. h! k" O$ I1 G" s' U: Nset-plot-y-range 0.0 ymax
9 }0 J6 H! _7 m* u8 Q
end- X$ _5 D. @& K

' `  ?2 c+ l4 bto do-plots
* p+ c' ^& Q! _0 _4 Vset-current-plot "Trends-of-Local-reputation"5 s( |  ~5 a! G/ S7 r# ~
set-current-plot-pen "Honest service"
/ [1 i) h. ~  N+ T5 yend
- ~4 c. a. y* E4 V3 H- r: B- m
! R: w' g" l0 |1 u+ _( {/ w# ]3 z[ 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 j, c8 L8 I: \+ t" n8 ~+ M

" M& B1 o# n3 ^" S* U( T4 ~. k# g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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