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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:; w0 l1 L3 z& F: H1 u
to do-business . [3 ]) w3 J" O5 T: n4 }
rt random 360
  j& V3 [9 T- G$ H: f fd 1
8 |1 k1 s' f  \: }8 m+ L ifelse(other turtles-here != nobody)[
0 @4 K, Z: M/ s/ h1 M3 m8 \: R( |   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.
" M  u: l* N: ^& ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  _; E; E  A% s) }( d  J# Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. S1 U2 {  ^8 z   set [trade-record-one-len] of self length [trade-record-one] of self( W+ Y* V" q9 m( R* d$ Q* R  U
   set trade-record-current( list (timer) (random money-upper-limit))
2 k: q* [$ {- a& `# _/ \' n/ O/ h9 ?: ^; k) h
问题的提示如下:0 a- h0 |% O" F) i9 s

8 f) I. s, X- G) e5 `error while turtle 50 running OF in procedure DO-BUSINESS
6 Q& E3 I" B' N4 |- s( E$ ]  called by procedure GO( A: L9 I: H# ~. E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! T; }4 M0 ?8 l: k1 c# |
(halted running of go)& L1 j3 D- s) |. D+ B
: q) F/ n8 h# C, y: C  z
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 n$ e7 C8 ], I  K$ Y1 x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. I( A: C- [% l! j& W
globals[8 y! D, v0 h! w
xmax
2 Y4 j  M, w$ L/ o2 Hymax4 H! G' a( M% B- T3 g/ h
global-reputation-list
, A* \5 S1 a4 U3 d$ s% s3 r6 m# u5 G( N1 k  N& R( ^
;;
每一个turtle的全局声誉都存在此LIST
0 N/ T3 s6 A. o- wcredibility-list
; ^" ]( O( U1 g- q0 m! V;;
每一个turtle的评价可信度6 _! U+ t$ B; t8 r  o
honest-service
- D/ _) z& T1 B: M2 k+ {unhonest-service+ M7 T! k" M  j
oscillation
5 k( g+ A$ C, L; \! |% {: i- ~; [' xrand-dynamic1 @) W% w, Q7 W8 ]
]
7 N0 q7 c) e5 W$ w
) R& ~; r* |) K  ^* Bturtles-own[8 P) B( T5 |- J; v# `
trade-record-all
1 L6 s6 b2 T" D' J;;a list of lists,
trade-record-one组成  b2 {2 i) t% K/ U
trade-record-one# g' b: W" G; t6 E- q9 X
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 T9 A& {6 t( {* V) Q

  k/ a% d  |  I: J% f! J0 W;;[
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]]
& d6 \( d+ B2 c8 Ttrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]0 \: E( |: |1 I- Z
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
' L, V' _" ~+ U* |, q/ r# B) Y+ nneighbor-total# C, C+ m& K  S/ l
;;
记录该turtle的邻居节点的数目0 l4 M4 A  V- e& {
trade-time- Z- @3 [* r& C- ^
;;
当前发生交易的turtle的交易时间
# z# P: h8 S: gappraise-give
3 }7 h5 o8 M$ q4 g6 S3 P0 q;;
当前发生交易时给出的评价
( N9 a/ t' d5 r3 r8 \: i7 m. X" o1 Kappraise-receive7 r; X' W% \0 L* n- k* v+ o
;;
当前发生交易时收到的评价
1 e- ]& D) Q9 {: ^6 |7 Happraise-time4 |& M! C; r5 a" q
;;
当前发生交易时的评价时间/ }. L) T$ G5 z  [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! r; J/ R1 o; W: e2 ^# w' ~0 z
trade-times-total
: E  H5 Y# d5 j3 f. y" w+ R3 |;;
与当前turtle的交易总次数4 \+ t! T; @# Z# n9 y0 E9 f8 X
trade-money-total1 i; x+ i, i+ [' w* T
;;
与当前turtle的交易总金额
( ^. `/ L$ B; T7 O& ~- g% }local-reputation' O. c2 C2 W* @4 w0 F( y% y8 Y
global-reputation
8 ?8 _) X/ l& e& i3 qcredibility
' J8 T2 n2 p6 X2 s* u6 b;;
评价可信度,每次交易后都需要更新
6 J, d* T/ ^& U. J4 K7 C. b( Z: A) U$ kcredibility-all
8 U  v6 {, P) r" ?( v! R9 ^5 c0 ?0 n;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据# f: C' V7 ~" H6 W- f
& s; q6 n% U$ ]# @- X, d* g" N
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
6 k! o( c2 ]6 Z5 R4 p! jcredibility-one- \) m) f+ f* H' ~: x+ A, n
;;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
9 p  L6 ]9 z/ |5 x0 N3 eglobal-proportion" t0 w( |4 Z* }0 ^6 E
customer$ }# G$ w( n+ Z! a8 l, p
customer-no. p8 }7 ?. p7 a9 E( L8 T, D- k
trust-ok. W, ~$ p; |% _1 X) h. l' V; L, C
trade-record-one-len;;trade-record-one的长度
1 g5 ~# \7 S  u; a  a1 h3 p]' J" ?! E; o. ]9 F% k# e- g9 W, C

' A- d* b( e8 i( i6 f; G;;setup procedure4 \, `1 c" S  v- e( c, t: N

! ^3 k! [* e) k% G2 [/ [to setup
1 a( f; N7 R; M& W. O
' W% Y# ?2 V9 ]( F& c! u6 n4 X; Fca

" t* O5 l! Q+ O
1 p; K2 `! s* |& W3 S) {initialize-settings

2 Y- d6 t2 N/ k: @6 ?2 h* f
7 y, h3 I4 T0 B2 |' B& Acrt people [setup-turtles]

" p$ R- Y- \4 U) v/ ^. H3 j8 q1 ]  c& \/ w% O& e8 U6 q% x% M
reset-timer

/ Q3 B3 g. J1 Z1 H* E1 c. |: r1 M" X/ @( t' [# U8 K
poll-class
+ Z6 J3 `5 ?: L$ }
5 v2 i; O) |9 a( L
setup-plots
. s8 N4 E5 Y0 Y

# ?6 g# W+ v% s4 B" Mdo-plots
! N. f5 y1 N9 K! K- X( `; J6 C, ]
end
: w, h8 }' K' ]. k: L0 N1 D
8 r9 s. V% M+ _" Nto initialize-settings
: t) s- R  ~& W* i: }
- y$ O" v1 G* ~; E# Fset global-reputation-list []
5 n+ x9 p0 m6 {1 b2 r2 x: W! L
. ]7 W4 f4 t5 \6 D0 x2 }
set credibility-list n-values people [0.5]
4 R& g! e- k- n

  E/ i! e. b# A# aset honest-service 0
7 ^( Y* L% m6 u& P7 j% M5 o: x

' t* Y: D% J$ z6 F$ b9 |set unhonest-service 0

+ l+ {0 @* u* c$ r7 A5 G
- D1 h1 k' H% ]- y# x# i& qset oscillation 0

1 t) ]( \3 e, B/ k0 I" M9 m, m! _( h" J+ R/ P" [" D+ M5 d
set rand-dynamic 0
7 ]( a8 d/ K; |3 U
end
8 {) x, D& L5 m5 W  j2 b6 U) V$ f2 i! R  p
to setup-turtles
: E) I6 w; I& wset shape "person"0 `  G1 N3 }: H. [5 ~; N, ^
setxy random-xcor random-ycor
5 K% }7 M& n* h+ X9 M) `0 D. F: fset trade-record-one []5 Y9 D; A3 c9 X/ q
0 ]& h( ~9 J% R" B
set trade-record-all n-values people [(list (? + 1) 0 0)]
, K* ?! {& Y, O
* m" K0 {  _) g5 v! R+ g+ k8 \& h# q
set trade-record-current []- J% K5 P4 c$ H: k' |8 ]. K( b
set credibility-receive []/ D+ S9 N% U7 ~& ~/ B
set local-reputation 0.5- ]2 k/ B4 ?1 l5 e' k
set neighbor-total 0/ P, T$ {7 Q5 ^  R1 @
set trade-times-total 0
' {" M$ A, P$ S6 o$ b+ Q2 h6 z$ Pset trade-money-total 0) t) G5 ^. }' S* O3 m
set customer nobody  ?$ m6 I; X  z& E
set credibility-all n-values people [creat-credibility]
; ]0 P3 H8 x4 p! c7 {3 eset credibility n-values people [-1]
0 o- B7 [9 I$ |2 N' Jget-color3 @$ R6 `/ E) I1 d9 p' u9 V+ g7 R9 ^

6 y7 N8 ?' P9 ?# rend% Z) W! o( k  b$ u6 g& E" H: V! M

% l# I! Y# O4 u# {$ w: r3 u7 lto-report creat-credibility
/ O0 \2 S" ~# e! {- _* [report n-values people [0.5]
: \! k' S. w) \' S) I, i* b7 U7 X9 g8 g4 Qend# q! n. F% P; L- Q8 k
' N/ F3 n8 W  @! L% f- i
to setup-plots# X  y0 ~- q7 y: a

. f2 _9 {, r& \) Sset xmax 30
' W% \1 ^: P7 u

  p, J/ c: Y6 R" C1 K% i  B: ~set ymax 1.0

; N8 Y; }3 j! N# {, F  L) R
7 J; t- T- p9 N+ z" dclear-all-plots

6 P; X0 @( d/ j- A6 O- k/ z
6 k. r# l/ T5 w, x5 M& v$ Wsetup-plot1
; i! {6 y" W# n8 ]; W9 f; X) t
( O5 W7 h; T7 ^6 a: @  j
setup-plot2

, ~0 Y, |* l+ ~$ H$ [0 F- ?4 K3 h- B! A, c7 s2 E
setup-plot3

, [1 I- j3 w" j2 Rend  z3 F9 Q/ q1 l3 R9 ]% z6 ]
8 M* W: }  m7 P8 U8 }! E! G- y( N
;;run time procedures# `) j3 s( b" B+ `- i9 ?

1 _8 Q. f0 Q6 ato go
* K9 Z) P2 z& S. K  U% @
0 v% r5 c+ G  g  u( uask turtles [do-business]
2 ?9 r- d2 u# h0 {( N1 g, E2 Y- w* c
end/ L# `4 e/ {: Z1 `3 @& \

; G: o+ r1 L; S5 H. jto do-business
; \: s2 g) S/ ?  x4 N4 @+ P1 c
5 h* V1 q2 D9 s# `
$ D4 b0 |  H  g
rt random 360
  G" p& b7 T8 j& I$ t
/ p" h& F7 C5 t8 V* e! o3 w. x  V' X
fd 1
4 E6 J9 k1 t1 M/ F) f& H
- g) E7 m- w/ l( q' `1 f
ifelse(other turtles-here != nobody)[
! A* R0 R0 _/ E+ s( A
5 r6 P0 _- m; V5 P- m" r( I
set customer one-of other turtles-here

2 s$ F3 [9 M$ p$ A
! h' y2 F& \* s- v- a; F# G;; set [customer] of customer myself

7 k, K& i  `6 d; p$ y. J$ F6 t3 N. v
5 d  H$ |/ }* C/ F# Sset [trade-record-one] of self item (([who] of customer) - 1)
2 ^  Y$ k) [, @9 P  p[trade-record-all]of self
- \( s: M0 G$ ?( B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 s$ v' P3 E9 ~, K* F- |$ o7 }
7 A" f' {. j+ Cset [trade-record-one] of customer item (([who] of self) - 1)+ b8 Q7 `( H1 r( y+ {1 H5 `
[trade-record-all]of customer
# ]8 x. H4 m) }6 V5 q

1 [- {4 z$ F; |3 j& s- f( a1 [# yset [trade-record-one-len] of self length [trade-record-one] of self
. P3 L  }, }! X9 v
& Q; z* A; g5 q2 y1 k; `/ q; P
set trade-record-current( list (timer) (random money-upper-limit))

, _3 R: ^: |' j
4 z4 j! m3 s' W3 t0 w5 g0 J" w% uask self [do-trust]% U' |* h0 I+ L* a4 U
;;
先求ij的信任度$ n$ V1 v- T$ P

; b! E* p' o5 dif ([trust-ok] of self)
4 C0 C; R! z2 |$ J  X;;
根据ij的信任度来决定是否与j进行交易[) |0 r8 k3 l! Z  g% J" O* }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) ]# d/ }2 F2 P  s
6 T# X( W  k9 M6 V1 X5 z9 i9 Q5 b
[

) T7 p  l  T$ }/ l2 ]# O
  I) j: V7 b: c8 gdo-trade
" s. t4 @2 s4 a9 J( ?$ I: q9 i* W
7 [$ g& e2 H+ E4 R7 C1 x
update-credibility-ijl

7 i) K5 W/ w$ p7 `2 d2 `0 }: s2 }: n( t- \7 x2 `
update-credibility-list
5 `* g# [& R& ^
# G1 _7 e% A/ P* H& j

' C9 [8 j- ~5 gupdate-global-reputation-list
4 i4 ^8 A7 D- o, A

  A. _& A0 T) w# i6 _7 |poll-class
, O* x( E8 {: W7 p' q& }

% I" _( w! Q  Y$ A7 b& A& E5 A6 eget-color
% `2 z$ s7 O) w) w# I  G

/ W2 y0 f+ Q" p, l]]
- X" I0 }' J, N3 x3 p
5 ]' k, n& D. T* ^7 m: n;;
如果所得的信任度满足条件,则进行交易
+ A4 ]$ q  g; E" W% ~5 A$ w. K) c/ z1 ?- k( r
[

6 Z$ K/ E7 c$ v5 \5 R3 I4 `
) A) \; O: j; Irt random 360

5 x9 t. ]/ A4 \4 h7 R& S+ \
' K' H9 p. _, s1 Z+ S# N4 i+ L& Afd 1
. S; j2 @0 F6 W. I6 j  Z
, k2 e. F7 ~4 ~/ X( l
]

: A- s; k) o/ m/ @6 Y' q0 b+ F" q, C2 n1 I* l
end

" _* l" q6 q6 v: ~  B# ~6 q5 J" i$ D0 M7 |
to do-trust 1 \. o8 h7 G" P1 F. Z. `
set trust-ok False8 P& |0 {7 P& F. J
7 Y1 q% O4 ]3 c  @+ _& E

: N" j! e9 ^! a' G1 H' nlet max-trade-times 0( X' J  m, a- \# N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( y' U, I0 A8 G1 }8 K% m& r* \
let max-trade-money 0! ~1 [8 D- H% z( r( |8 {% P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" @$ z- {  q" W7 \0 z+ z6 k
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ c. A9 a+ i# g' B7 `+ B6 @" @6 u2 N
4 W8 e% w% [3 w! ?
get-global-proportion; s/ x: c6 ]- s9 c% r
let trust-value
3 x' |+ V! I) t+ i7 Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 E/ L( D" w, I' `+ s2 T
if(trust-value > trade-trust-value)
5 N% a" ?( Z+ _- L3 g[set trust-ok true]9 ?& v0 t; c3 E& G
end. o# M7 i! ]( P

- g6 Z" s& k5 {  [/ v  gto get-global-proportion4 c  {$ @( X  M# L; C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 ~" T% i; I$ |4 r' v
[set global-proportion 0]
4 {) d) l: g& [8 W; t6 P" o2 }[let i 0
4 d$ ~! @5 @& a' q: ]let sum-money 0% M/ I( s# j7 r7 @$ |' t+ m' T: E
while[ i < people]
. @2 T. @; E7 C3 j[
8 @; ~! ^# i: E( U7 m% F" Vif( length (item i
5 S9 h% R9 O3 S" v( d) ~5 E[trade-record-all] of customer) > 3 )
4 W5 Q# n  I. G/ X$ v; I! z
[
$ Q2 m3 ~& h" M6 d* k: Y& b" Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) N; a* {' o2 P# E0 U
]' b, a1 _3 n, S  O' D
]
. a' X) }5 B; v/ k/ e7 d& I8 d4 ilet j 0
. W) W7 a) t: a# Qlet note 0
# n+ J. o: T( R- Q  Y; Uwhile[ j < people]% r% |# t2 P& p$ D5 m9 w$ g
[
# |! ~2 z" ?' l" u6 iif( length (item i
4 @5 G1 c2 z( _[trade-record-all] of customer) > 3 )
: }1 z3 n  Y8 L3 ]- I2 l0 B
[2 G4 |) u' }- Q% C) U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 R% @3 h  W, u; X( l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) f8 O' h6 @1 a/ L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 ^5 Z2 N/ Y9 U9 a
]8 i9 r) t5 _1 V6 H
]% k0 j- ~7 I4 B/ Z
set global-proportion note
, ~: G9 k1 H5 h$ m]
, h  p$ w8 j6 B+ K% o9 U# Eend
' ~/ T; e; ^) v: |& S7 ^' o: H3 L8 }9 l, ^, ?4 I8 M7 h
to do-trade
" A7 G, t: z1 |: R+ U" P  y;;
这个过程实际上是给双方作出评价的过程4 F) v7 }4 |4 X; m# m8 G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% ~' d, N; M$ {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 t0 ^5 b- p5 w! A$ ^9 [9 R) O
set trade-record-current lput(timer) trade-record-current5 A5 Z9 |. d* }/ K
;;
评价时间
1 ]" w) ]0 b% F( {ask myself [
# N9 M+ h6 _" T# P2 ^update-local-reputation
, {& F( \& L' jset trade-record-current lput([local-reputation] of myself) trade-record-current' R  `, f) Q5 E: p' ~
]
& B# E. @! w+ {! Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; O& u) A( N9 e! @) ?' c) G;;
将此次交易的记录加入到trade-record-one4 d0 x, y" k7 r4 Z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 k, E- Z* g& ^6 K
let note (item 2 trade-record-current )
( M  {! c7 ~3 N; v* R" B' I: Wset trade-record-current
  G, g# L, L/ T9 Z9 K- q, A4 a(replace-item 2 trade-record-current (item 3 trade-record-current))

4 i# f5 O8 T8 D3 g% fset trade-record-current, @5 V3 O1 d7 z5 j: ]9 h. Y5 f
(replace-item 3 trade-record-current note)
0 V( f, m: f6 ?9 I9 W2 G
1 Z! U5 p8 Y+ ?' {# f7 y) B
1 {/ H. ?6 M4 n, i4 n# ?
ask customer [
- M  s. V5 K4 T6 Z  X; Tupdate-local-reputation4 G3 o) V& _3 g( B
set trade-record-current7 A4 c0 Z$ s4 Y, p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& o( w6 A$ y6 V8 v4 O+ @
]
7 B$ A* W$ \0 U8 D* j; J
3 X) [- r0 u% o

! A% Z' u! v$ z0 W. a: I5 f! hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( Z& Z, V( u% y5 _1 G
0 {+ ^* T* r0 `$ Q: a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 X( M* U2 F4 H( E- {% [;;
将此次交易的记录加入到customertrade-record-all
  D: T! a5 G/ rend$ [$ I. T) W- Y4 B+ k- ~1 m
8 O' @/ ]8 ]; a) [) Q
to update-local-reputation
+ v: g. R. }9 uset [trade-record-one-len] of myself length [trade-record-one] of myself* d& j( Q* B# @

. K8 v9 t$ V- K- b$ O% A( C& ?( M2 G% [  \& ~; u0 [' \
;;if [trade-record-one-len] of myself > 3

2 M2 |5 [# ]3 _! U1 }% {4 rupdate-neighbor-total) Z8 t$ w7 v2 x7 P  O+ h  X
;;
更新邻居节点的数目,在此进行" o  X1 U: N# K: r+ M- s, ^
let i 3
, M( r) ]7 C  t2 s2 ~5 alet sum-time 0+ K) \& S% V. a4 Y* U# a
while[i < [trade-record-one-len] of myself]
6 c2 e, k1 R8 f[' F! ?0 e4 K5 U: s' I, e" j
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): q# o! O3 B' l2 D7 m) i4 \$ m! p# ~
set i
2 g3 o0 S0 M# w) s& U( i + 1)

6 _+ N) x, }' O5 ?! {]
: s( I$ d" u4 t# O  P' L2 Z, qlet j 35 ~: [: E& k# i9 e6 \
let sum-money 0
& z6 Y! y/ j% pwhile[j < [trade-record-one-len] of myself]
) E: s. c& @1 I; G: K: ^" o[( s, r/ p0 U$ s
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); n/ q* e* O0 j
set j" s9 i0 s) `  R
( j + 1)

) o; N4 H8 X$ I: Y# o5 S]3 M! c0 i9 F- ^" k9 D, L! I- j! b( @
let k 3
8 S! ?2 M5 h1 r5 Slet power 0
5 A" i0 H$ [: \8 b0 M  ]let local 0: W% {$ X* z1 z- _. l4 j5 ^9 M4 g
while [k <[trade-record-one-len] of myself]
( _* A/ K4 ^6 Y. [, F7 S3 o$ l[
, C* _9 A% z( Q# _# Eset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
6 F8 s1 r( {3 Y' e5 P) ^set k (k + 1)
% p" E/ F* I, @; A) Y]
& f( R6 D% z8 B  j3 Z% ]set [local-reputation] of myself (local)+ i0 q& }7 i/ o# C
end: j0 V9 B% \  X7 g8 e/ t

+ |- e/ {: D2 E$ v- yto update-neighbor-total
8 D8 M' o; i' [( L+ L# C
1 K$ ~' y9 u: m& ^% a% pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; x' K* O; p$ Z& ]7 K

! \  {& ^+ @5 S0 d1 R% }8 n
4 x! c' v5 a1 Z; ?
end
9 o: _- P2 e/ k( y) |3 w) a5 {  I/ ~( |/ L2 K. ~. O/ F5 y
to update-credibility-ijl
) i' y+ w% f% G% I! e( S6 w+ I& w2 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。
0 {; n' |7 j; v  R- V. z) W3 u+ Xlet l 0
- a1 z1 `& f  P8 l: u3 Gwhile[ l < people ]
9 V7 I0 o, [' n1 `( N;;
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
: z, P1 U& I% R7 N# i$ V; Q( F[. f5 ]% D/ w4 P6 R0 w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 ^6 I7 x% R$ s
if (trade-record-one-j-l-len > 3)
( n4 d* Q* \! W. u1 P[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
( D$ e" Z% F: @# v; Dlet i 35 A1 w: ~3 F' ?% {5 `
let sum-time 0
6 c; C  r" J0 S9 ?& C, L4 `2 n: rwhile[i < trade-record-one-len]3 {, S0 E3 @( [% W% Q: p3 P
[
# ~1 U4 s/ m) k6 F0 U$ ?7 vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# ]7 Q1 O/ T& Y, F2 v) w* ]% Jset i1 P/ l" x6 ]- V5 Y
( i + 1)
+ u' r6 F/ p% [' x6 Z& l
]" a4 i' M# f' c$ s( T
let credibility-i-j-l 03 ^! w% d( S( s8 b0 g
;;i
评价(jjl的评价)
3 B9 `- G( z. e, }let j 3  M: X0 Z) o; I
let k 4" G+ M9 G2 h6 D" ^3 L  w: N
while[j < trade-record-one-len]
3 Y. V. {% S9 n* F/ A7 b7 W[$ P* }" c9 |9 a! x  _3 ?
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
, j% |+ K5 y: w6 fset 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)
* r4 f+ v. D! t; hset j1 c, h) Q1 w) x# s8 A
( j + 1)
* ?4 Q& w% N  v
]
# S/ c/ N% Y& Kset [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 ))
# ?: `* X) Y: B4 t/ V, c9 W( l, t/ C+ o7 R5 R3 Q
3 N) [" Z! w6 S$ J1 g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 Z8 O! S7 Z. P& a3 _  v* r
;;
及时更新il的评价质量的评价! W* ]" m& B. b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# C5 G( t4 `! l8 J- jset l (l + 1)
; D; ^) y* u; ^+ c' u) U, l]
# v( E1 a! ?6 B' p* gend
! L' l$ h0 i, j8 ~) ]. {& ~9 a& i8 M1 a  r1 M) l
to update-credibility-list
: j/ W2 J" A3 y" v' D, l0 zlet i 0
2 s2 B6 q+ ^+ I! s% dwhile[i < people]/ r+ ~( ]% N2 k9 A& Z" q( ?/ {
[3 _% c  b; b+ p" G7 r& W
let j 0; N6 V% A: ^5 _( a4 q+ {
let note 0
# q5 U$ s" m) `% k5 Y( Z. T) i! n2 G! ilet k 0
! p4 V. \9 s8 t6 L# c;;
计作出过评价的邻居节点的数目
. M1 d: j- L0 t$ S7 lwhile[j < people]" _! h' u) ~1 y9 x+ n4 ~6 G4 l
[+ ?" l  A2 s) r# Q8 N; R/ ]
if (item j( [credibility] of turtle (i + 1)) != -1)
; ]5 b" L6 L' S5 b- f;;
判断是否给本turtle的评价质量做出过评价的节点
% X: U. z7 S5 g6 W# A1 i[set note (note + item j ([credibility]of turtle (i + 1)))& M5 h$ h& Z! N# H3 H# X
;;*(exp (-(people - 2)))/(people - 2))]

$ v4 ^2 v) u. g* Y) d- v: fset k (k + 1)0 e) s8 [: l3 a
]. `% W3 ~' l2 ?% z
set j (j + 1)
4 \1 a- B" n% {: e" i]
0 i% }8 i' q2 z- r$ b0 q, tset note (note *(exp (- (1 / k)))/ k)0 L3 W) m! y5 f, I
set credibility-list (replace-item i credibility-list note)4 M& Y5 Q4 s! j; ]0 b8 Q3 I
set i (i + 1)( N3 l9 D$ L# G. t+ Q
]
1 X0 T3 W- [& p" V8 n7 d/ X; uend; }- t6 F+ I7 T2 s: d) Q* s
( ]# v! U* T. i7 ~1 G
to update-global-reputation-list7 g' |. a4 h2 X* G2 R5 o' E
let j 0
6 Y: R) x) E+ h! F3 z& Kwhile[j < people]
7 Y9 u  M) z9 a( I' e& y$ a[# e0 w" G" ^6 N
let new 0
% Q  T  J6 T( u2 Y% Q;;
暂存新的一个全局声誉: N& f' u4 D% H& A  Y* N2 a
let i 0% x8 y7 n) y0 @+ V
let sum-money 0
6 s& h; S) r) I+ {) _6 n/ B5 slet credibility-money 01 I0 y& r$ a8 g0 ^) q9 m2 W
while [i < people]8 t+ D, `4 h3 W+ _) j) U
[
0 J' o" \+ k4 Z+ f% Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 t, p* v' q  y" nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  [6 v8 k$ b- a: c' Jset i (i + 1)
3 N& }  ~+ I+ Y  }4 ]/ x]# `- H1 k2 F; @- H) M0 S: j
let k 0; s' _: B$ u  n% g1 w( m
let new1 0
) R  v1 r8 o3 Ywhile [k < people]
/ i/ f- O* Q: H& m; L[
% _' |" P6 z* T* ?4 xset 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)
( O8 X, m& u! l3 lset k (k + 1)8 e! t/ g  m, Q' Q
]
9 s2 `8 \  ?! h. ^  tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / V1 M2 h* R: {2 L
set global-reputation-list (replace-item j global-reputation-list new); J& K5 I+ g6 s  G: h7 e
set j (j + 1)5 R. j: J& c. p3 h0 N/ _! s& c! t
]5 _, Z1 v! p5 _; l/ }6 z& N9 ?
end
, \: m6 D8 X! X) K; n& X$ v
' G+ r3 j0 U9 s. N: f3 G9 I, u* G" a6 s
' R% R5 k/ v% g$ l
to get-color
. |6 n' F- M+ [* A. k
& [2 _& C9 s% @; n$ ^2 O4 Y$ s" pset color blue

0 ?- i$ [8 A. c+ aend4 U1 r  N/ z* ]: o% |

! c! K) _# p- ?4 S2 T1 e- Xto poll-class6 b! Z0 \: [2 @" m# Y
end
/ M4 c& E4 r9 l; R2 {
7 M6 Z; F2 n4 d( V* y; dto setup-plot1" P$ U* n; z: V$ P  K( e
0 z  e: {' b; ^+ H6 n4 [
set-current-plot "Trends-of-Local-reputation"

8 b7 J1 R# P# k
+ e% a" K/ x4 g; C4 I8 _7 S4 Z4 yset-plot-x-range 0 xmax
3 w' [# b0 e. R' T# h9 K; n

) N( ?/ P1 P) ?7 i; S$ C1 N8 Zset-plot-y-range 0.0 ymax
0 `8 U2 k* v: F
end$ k, X: D5 v: Z6 Q+ t5 d1 F

1 V) o2 S6 f' M" H/ Ito setup-plot2
* x, o. ^( _3 a1 W8 X% N* B: L+ ?9 h; }# L+ i! E! ]/ L& `
set-current-plot "Trends-of-global-reputation"

8 h9 E3 V9 C" K1 b. }* R, e, h5 f+ e* O. q0 y7 Q
set-plot-x-range 0 xmax
. |& Z2 q& M' g$ O0 S

. D6 H- z) ^0 ]: [" e# k" @* c3 N3 Qset-plot-y-range 0.0 ymax
( h! N' S: u2 u. g# {( I% R
end
& w% x, C9 Y4 P5 M6 t1 y( \: b+ t: R9 j+ P
to setup-plot3
+ C$ P9 K, h7 G6 B# K* B
1 i; B9 `/ u, _5 Nset-current-plot "Trends-of-credibility"
- v4 l0 P+ L! a2 b$ X

8 b7 K) y. }3 ?7 A0 g- n0 a3 w8 ?set-plot-x-range 0 xmax
4 k6 p. f' v8 X9 N
# o  O4 A* M: V1 y8 z
set-plot-y-range 0.0 ymax
/ {: v: m) j8 v! o! w
end$ Q; U, x  Y# L- T. X0 F

. m; D- M% @, m2 v: V" Cto do-plots
/ W! g1 r$ X* m0 {  r* [- J4 O2 @: F0 Dset-current-plot "Trends-of-Local-reputation"( y- o4 Z% k' w' H  u: n
set-current-plot-pen "Honest service"6 i5 _, l) N# a" Z- }
end
0 I/ _0 k6 i4 ~5 s7 @
; W+ t- U$ M0 Y9 `: W1 O7 _1 @[ 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.0 i8 S, j" C* b1 }, u
7 Q" ~/ X2 z, ~' Q
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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