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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) ?1 b( i. n
to do-business ( T  @- m1 x9 M' R& [% J
rt random 3606 G( M. O7 w; Y" R3 N+ a+ }( e
fd 1# U. F/ T  u6 ?5 c" W" Z1 ~
ifelse(other turtles-here != nobody)[- S: T" y/ R4 G- y% g
   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.1 {" |" F" Y# f: A/ v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 b0 B- \! q# L! \2 b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 `1 g% T8 @9 Z6 t, p- {+ Z
   set [trade-record-one-len] of self length [trade-record-one] of self/ o9 o- k2 W1 ^* ^" L
   set trade-record-current( list (timer) (random money-upper-limit))$ `( o) _9 J4 M/ U5 }6 [
0 D, T3 n/ m5 Z2 `" @1 w0 h; k
问题的提示如下:
0 Y) Y% T5 P7 b3 E: D- V1 F. ]0 ~: _2 @: J; o+ S, Q  Y3 a1 {. o% y
error while turtle 50 running OF in procedure DO-BUSINESS
3 Z3 t  X  g. \" c9 Y9 c  B* z: E  called by procedure GO, ~  t. W+ v  u& z3 a; e
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ L3 Y: D! K" z5 U/ B7 ?. j
(halted running of go)$ H$ ~. G+ s/ C. m* D3 b$ ~

8 {. h3 r0 i5 m$ q' |0 b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~~
7 D) B/ s# q6 A& I4 w& n( f- 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" n7 Y' r" x7 Z. {
globals[
! ?3 P" a2 E8 [8 f( J# z/ t, oxmax
) C' e7 @6 h* D+ Cymax
. ?$ m8 ]6 h9 x( Y7 Kglobal-reputation-list
# d0 u9 P: ?; g. H9 |
. s7 i: i0 a# g7 B% N( S;;
每一个turtle的全局声誉都存在此LIST
+ `' i9 l) G4 f4 U5 o# C: N# _credibility-list9 ?8 b5 G. I- Z6 f
;;
每一个turtle的评价可信度
! M% e+ E* K1 V  D$ }  Q4 I# qhonest-service
! Y* m( n% p9 k" l, n" Punhonest-service& ~9 r- h$ j# e: w) b
oscillation# M6 `# d9 H5 W( ^9 M
rand-dynamic
# _, e9 N1 m. l% d  b& u2 G]) k/ g* @2 E/ f0 X
! c+ z. U% m3 Z; w0 I
turtles-own[
: m8 `. Z% i( C9 N! t& utrade-record-all2 e: N  F. U3 L) I6 \; X$ P  d( E
;;a list of lists,
trade-record-one组成
# b) {. s! @' |/ ]$ O$ v! ztrade-record-one
, d2 u7 x3 ]8 Y) F9 K. u8 V( D8 y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) e$ o3 x5 f2 @6 P) s

; a, G1 Z' B$ B5 X# V$ D/ ^;;[
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]]- Y+ b: F7 u2 b. a+ m
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]- I& r1 V: n) @0 g
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
6 U3 `# ?: f# ]/ b, Z$ [neighbor-total. Q- M- r' M6 k* O6 K1 L
;;
记录该turtle的邻居节点的数目
; G6 Q7 c% s6 o7 S; ntrade-time: f4 O; G5 Y% Q; W% m
;;
当前发生交易的turtle的交易时间) g9 J. x( l& h4 a1 \) ]
appraise-give% ]  I9 d0 @6 v0 T" N2 z
;;
当前发生交易时给出的评价; W9 h$ T* o5 Q9 \! g3 q- R' I
appraise-receive
; F. L8 |0 O# y- ^$ [: l;;
当前发生交易时收到的评价
# E* ~4 L  F" D+ happraise-time9 P3 z4 g; M$ x) m# n/ M
;;
当前发生交易时的评价时间
0 @6 B2 W4 @% }& clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 N3 ^5 T$ t( M/ }- P& e/ i3 n2 d6 A
trade-times-total- G' ]; @5 j$ V, q6 n$ J+ d: y
;;
与当前turtle的交易总次数; I' r5 N4 U/ G- N9 i
trade-money-total1 M* b' O# R4 o. Q  v+ P; w
;;
与当前turtle的交易总金额# \/ e$ ]  K# y) _9 q
local-reputation( m  a5 |* B( [5 S& ^- Y0 S6 C9 r
global-reputation
% e3 D/ ~: x& E, X& {# ]credibility
2 [9 V( v8 n8 b& o: v% H* B4 T;;
评价可信度,每次交易后都需要更新
7 S* Y& q+ J1 E* w* Ocredibility-all- b3 ^# {& x  ~* G& U5 x7 k
;;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
* z2 i$ q! ~0 p9 q+ u! L+ b. H
) h1 b! L; F$ ]+ k;;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) q0 C9 L* `3 h. n- r8 H0 W
credibility-one& ?' Z' U) W7 A' ?( ~
;;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people5 J/ c9 i1 Y/ b3 p. D
global-proportion% H2 t( E6 N: F, _; F- W
customer
+ H. y' y8 g) M2 N7 N' Fcustomer-no
$ X2 Q7 ]! n* G( Ltrust-ok: S7 G4 V/ r# w% z
trade-record-one-len;;trade-record-one的长度( k& J0 g' ~0 M3 U# ]8 R* X
]
) d' Y# o2 w( i/ q3 y; W
4 n  h  G" E1 s. j;;setup procedure* \2 v5 t4 u& m, D1 h6 t- W: ]+ _

0 W6 s# u# ^; U. ]2 D1 Pto setup: f* I( @, l, m8 B: w+ {

/ P1 s# ?' ^# Dca
5 P- H: G' f+ h$ v
: E4 `3 W. y! s% @1 C
initialize-settings

( H% Q5 T+ P! v$ Y% \& j
: U6 x9 a8 W8 H2 h4 Wcrt people [setup-turtles]
4 o8 N- V2 P& Q, t6 g8 V
  b" T  y& V, M- P, a4 K$ p. T! Z
reset-timer
5 i% @' m/ a- k- b  |1 G3 M
$ s* K& S  [  X4 h" C- v9 l6 U: y
poll-class

0 Y4 u5 }* y( b0 \' c% k4 d$ j; U# n0 L' s) A; }
setup-plots

4 O% C! l/ s$ p: r( o
& p9 h6 ^* H, S$ B8 |) ^- odo-plots

% _4 C' A/ A  o  Y1 [: K& Eend
+ k. ~" L* F9 t: L; I" }( I6 E% h+ k+ Q2 Y
to initialize-settings
0 C' V9 ^2 c' E0 N/ @9 R
3 w- U4 k- P% L; Z' m4 O0 D6 Zset global-reputation-list []

: s9 ~3 u5 K5 P( c% o. y4 G/ D, O
7 w% ?$ p' _0 jset credibility-list n-values people [0.5]

. q, J6 b6 j( b. K
3 r9 A: g% B9 j" F# Oset honest-service 0
; ?  O$ x- ^+ O4 t( d( K0 N3 c/ [

) k: F4 O% G; ?0 ^1 O8 pset unhonest-service 0

7 ]* _1 c4 g1 z' \  i9 \- l2 E9 s$ m" s7 W
set oscillation 0

- P- }  |! h4 U; ~8 x9 d- Z& i* ]
6 P6 A( n/ [: b2 f0 ~& {; h! E% sset rand-dynamic 0

) p/ W$ N  y9 I+ T) dend
5 T  ~; |1 P6 s7 Y; [$ i0 @' w+ }2 L" J- v! r
to setup-turtles
, @; i( k* Q! d& H0 u, Qset shape "person"
7 b6 Q' D! S/ P- J- `: Usetxy random-xcor random-ycor% D: r- x6 O- e
set trade-record-one []
  M: t$ a" f( X" P0 h- a
0 [( O' ^2 @9 u* I) R
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 n9 v" ?7 O/ ?4 v1 @/ K+ j

: N' d  X. w) m+ H: zset trade-record-current []& P7 H% Q1 ]% d
set credibility-receive []
7 b3 _8 _  U' W( V& k4 rset local-reputation 0.5: G8 c2 H8 g: L: m5 d, J$ n
set neighbor-total 0
* \) s  f( U( d& n4 C7 v4 _set trade-times-total 0
8 E9 i8 }/ J  q& d7 aset trade-money-total 0! v- V( l+ J: a! `, w6 {
set customer nobody
( C2 F5 B1 X1 g0 D/ p; O* qset credibility-all n-values people [creat-credibility]; D/ K  \. n5 `9 H
set credibility n-values people [-1]
( p! }# H/ p2 ]get-color+ e8 Q8 I6 o6 j7 G# h
1 X- t- C& E! j0 [$ E2 U2 Y- C
end
" R$ a9 R3 H- R3 |% Y$ }' ^, T/ p: \, M# O  f
to-report creat-credibility
" @7 J) q) h# ?  d+ Yreport n-values people [0.5]; y: O3 v0 {. R! x
end
, y6 Z1 Q% o1 q' o; Q9 G+ s! s
+ f+ k9 a' E& d7 Z  W& [0 h$ Rto setup-plots
0 {6 V& Y1 M4 i# [) u- s% \. `2 S
4 U+ O) W5 C; ]6 u7 L7 ?( D$ c' wset xmax 30

0 O; k3 E6 `. b  J" X0 P* ~  y; M, L: c" s
set ymax 1.0

" E5 w9 N- m$ D; R" r5 Q% u) E; Z) q) N. J
clear-all-plots
, D  O$ t' J- [$ ^
4 D  g! M3 u! p% Y- p4 w
setup-plot1
" {0 ~2 X1 _$ }  v. p0 h8 |

* T) G! }; M9 w$ csetup-plot2
) q& L  p3 w. j8 `

. z# ]/ y# n; |' {- D) Hsetup-plot3

9 \- q" T2 y/ Q& Nend3 [& R8 X7 z% W' |. I5 b" k1 t
# t0 l" k; y! [% E
;;run time procedures2 E- |% D& i) d4 ]3 Z8 _1 H, A

; I* u; H+ u% Nto go
6 E7 ], w$ R7 y) j/ w3 R
) ~* I2 l0 ^) z4 |  o# Sask turtles [do-business]
7 R  H* |$ ^2 W
end
# f' I4 W+ c  ?" H4 K, U
4 l2 I9 j8 ^$ F8 Vto do-business ( Y. ^* G, D7 O5 d: B
( ]0 _/ y1 @, e7 |+ H* J
' a# b; L, E8 R6 H, _% A5 _+ {0 f, y
rt random 360

: B# g( n" f3 t+ [8 c3 H' m; l" X
fd 1
2 ]4 J/ |7 _& B; ]

8 U" y. h' z. D+ S' w& [ifelse(other turtles-here != nobody)[

" c2 w! D3 I; f0 C2 \. O7 r2 G: k, ^5 e" y9 `7 S5 d
set customer one-of other turtles-here
/ D  Y0 f4 K8 ^- `2 Q8 G. j) ~
/ h7 x# P; R/ \& l
;; set [customer] of customer myself

: N8 C' k, ]. t6 ?# v) R' m- L! R* Z; R: v5 _: D. M& ]- ~
set [trade-record-one] of self item (([who] of customer) - 1)
- u7 c. ?9 L3 x! b1 R$ Q5 j[trade-record-all]of self5 C, D+ Z0 }' L  C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 n: G- x% p) `5 M; z" J& `7 W
/ v+ ?3 J9 T- e. k
set [trade-record-one] of customer item (([who] of self) - 1)3 a/ `2 n7 m' F6 L7 k' {/ V2 O
[trade-record-all]of customer
) h* z6 }% K- t6 u
* q, w4 N1 `1 [( q1 e1 C; n
set [trade-record-one-len] of self length [trade-record-one] of self

( m- {1 J( D: b8 Y" _4 f! b& r/ [  L8 `5 H3 ~8 U$ H8 |1 C
set trade-record-current( list (timer) (random money-upper-limit))

4 c$ G5 P) s# E+ d) V: A, H: i8 X+ z( ?; n  {4 U3 \+ X6 L, a1 K
ask self [do-trust]1 c3 ]; J! o/ f6 H2 L/ |6 o5 x
;;
先求ij的信任度
1 A$ ^" k! I( w! f$ ^8 p0 k, n% h1 ]/ z4 A$ M9 j
if ([trust-ok] of self)
, f6 W, _  p  i8 t;;
根据ij的信任度来决定是否与j进行交易[
/ B( m% }, z! J3 d' l! u, g2 `ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) h  u8 ?/ ^8 ]0 P% j" F5 S6 I; ?' A6 z$ @3 y7 H
[

# T; {$ r: j6 U' U
1 Y5 Z* v- T: Y2 C( v: tdo-trade

9 z& F0 U: L' k' t( w; P, d8 \
* W3 `4 s4 E) X/ K* {1 [9 a1 Bupdate-credibility-ijl

( ~. E0 A' \* ]: |# b+ C' p# F. ~4 Z
/ [* [2 [& ]0 V5 n; oupdate-credibility-list$ p; ]7 K: Z& t5 d) V( C5 D; ], D
0 \, G: ^! c+ @# z( L4 ~
1 z* O% b! N7 [% K/ j; R
update-global-reputation-list

) R1 ^* {2 T( y: V3 {" R3 y8 R7 T, e8 d2 a3 Y- Y9 `
poll-class

+ h8 y: o( o9 _1 k4 i7 n) O. T! T  r6 j& o8 [
get-color
5 g, Z" I% y; y. g& I1 z& x
  v+ I7 |# w0 V+ B& v
]]) T+ K( D8 B% L

4 a. l$ q8 y" G( T5 C;;
如果所得的信任度满足条件,则进行交易9 [/ O) w: ^4 [. ^  y' g/ {
) q" ?7 e. T! b- B* S
[
8 _9 E& x% S1 N4 S. k

/ R6 Y4 o' X/ R+ ]4 ~* B2 c- |& p( ?rt random 360
9 c- H3 \" k; _( @8 h3 K
& J, G- P$ B# T/ y7 R
fd 1
! V$ o5 T& c  |% }  [

  Z1 ~0 P  Z0 q  t( `]
0 z/ L% e* j8 J4 ]

4 L2 k% }1 {' q3 M& Xend

5 r' h# S0 k: G& [
: l5 f: e0 f6 v  a+ ]3 E! {to do-trust . h3 S1 i% D3 ~% b- c
set trust-ok False
5 m5 |" G$ P, @! X1 S5 G
* O& V9 d2 u8 T  k* ^- K
. t% C9 I. g9 i: K& c
let max-trade-times 04 M5 r- B) W7 w: ^2 t/ x9 H& g6 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& B- G) W% X& {
let max-trade-money 00 G3 D1 }% i% j1 |& R
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 `) _& X1 X9 o3 U* 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))* `- j1 t) s: w8 T& H
0 o0 P* X4 x: x; ^- p% M1 C" g6 |; {
1 n  j, Q3 E8 R& q; `( y* T: O
get-global-proportion0 g1 W* i8 h6 U/ e+ E# y6 c
let trust-value1 ~$ a) r) M  I$ F( D
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)
# u/ _0 a4 w) `* s" [0 C  r1 z) _
if(trust-value > trade-trust-value)
" ^( D/ X6 Q0 K, ~8 Q[set trust-ok true]
& c0 I. w- |( y+ I% \+ lend! f2 u/ o7 g9 v9 A# }1 n0 `2 e3 G
1 K1 ^; a* o+ C7 [- y4 K% T8 d
to get-global-proportion( t6 b1 s8 X% r4 D2 f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). u6 E6 _% t, X
[set global-proportion 0]
" ~/ Q0 H! B5 E7 X[let i 0
' K$ r3 h# x/ u4 Y: b0 L4 _# wlet sum-money 0
- h! b. ?  w* qwhile[ i < people]
/ R5 e$ u  n6 r1 I0 y1 @, r7 N4 |[' p2 N7 Q1 U" I/ y
if( length (item i
. E. p7 J# ]; ]4 X[trade-record-all] of customer) > 3 )

% Q1 O7 V5 a( H3 A# _  Q[0 w  o: C4 L" Y) R5 [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* X+ R' d  ^/ @. Q8 z
]
; K& u9 X+ E: C  [4 ~' D]
3 ?7 m; `% o" G+ K9 {let j 08 Z) [1 F' z5 |& U
let note 0
: e3 J3 F* g+ f3 e% d4 Uwhile[ j < people]: ~8 n1 l- D* i
[) }. N& }( X3 e+ x+ M& J
if( length (item i% G, D/ J8 B' _/ E- G
[trade-record-all] of customer) > 3 )

0 ?- |; J8 u' i3 I- @[. P0 ~- l6 S! e' G" ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 I) B: N9 [  D' Q) ~, ~
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 U7 n$ c+ Y6 Z+ M
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& {+ w5 j" h7 l2 I]1 u# T% q7 E/ p& D8 J' N# \
]* U5 Y; ]( M7 d2 D0 r: j- a; w
set global-proportion note
; l* P; g: o# h' Z% d, w$ z]
, t9 r7 S+ ]' }# r. {- F( Gend
& T( R( q; r( J
' G4 x! |$ ?3 ?& q8 }8 jto do-trade2 _+ a5 g. t0 Y
;;
这个过程实际上是给双方作出评价的过程5 h3 }  G/ i" \& H8 M5 n: z+ c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: e. k1 R1 Q+ Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 R3 l* ~- Z8 H
set trade-record-current lput(timer) trade-record-current) J* r+ l" E8 B; z+ y. O0 d
;;
评价时间
6 k% t) q" q' iask myself [
% y# ]% f5 l9 B) }) F# ~: G! M! \. {- [update-local-reputation" i2 ~8 j/ ^. f$ ?' Q
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 K# Y7 \& x. ^5 @( e. _]
! n( z; B& p0 }8 ^/ z: f% S) Z- c' Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; b) n- V# ]+ ^2 P  _7 }3 b;;
将此次交易的记录加入到trade-record-one
/ B7 X( b5 P- yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 q8 }+ \8 j! [4 X' Mlet note (item 2 trade-record-current )/ j8 `, ~  G: b. P) |) Z: a8 {
set trade-record-current9 r; u& i2 ]( n2 `. p" I0 ?
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 m- M2 @" {% Iset trade-record-current5 `8 [9 b  W2 w8 }( z+ y
(replace-item 3 trade-record-current note)3 z$ E$ _6 y8 G
0 M, ~1 `2 x. d8 V
, f; S" p6 `0 L9 ~* `5 W: @$ W
ask customer [5 E, j( W0 U# C, }' \" y, J8 k/ h' w
update-local-reputation
5 G9 U2 C) s! |' H) hset trade-record-current
( l: P- r8 V! _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& N3 A0 W: U5 ~# \* s) h, K
]7 u# T# R6 y% }# S5 C& C
' x  V- E4 `3 D- W& A. ]
2 w1 g8 k; u9 M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* b# ?, v6 @# E& Q& r5 Y/ f
5 v& f2 G9 z1 L; X  Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 {+ D) c/ }* d8 y4 H1 {& \$ h0 D;;
将此次交易的记录加入到customertrade-record-all3 [& s- {) F$ c3 ~  R2 n* L' L/ r
end% R. n/ Z8 C& E1 J# p+ L

9 T; U0 d. Z. W2 G$ f8 Z5 rto update-local-reputation
  H* \, @: z, w7 yset [trade-record-one-len] of myself length [trade-record-one] of myself$ C& {. i. t: l, B( b. {7 a
0 _8 Y: [- ^5 t+ K

0 h6 R) {$ g: w# p' J5 J( b;;if [trade-record-one-len] of myself > 3
) }( N# }7 d/ \. w( p
update-neighbor-total0 R! c! c3 p4 R- b4 }
;;
更新邻居节点的数目,在此进行4 q* _* z) Q) j" t# X+ g) E; c' b, r
let i 3/ k7 _+ B6 p% K5 Z" z( M
let sum-time 0
! l; K8 l% E2 y  b( H. fwhile[i < [trade-record-one-len] of myself]* A% V% X9 _; x
[9 w9 M0 `& J/ f' U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" k0 @3 }1 }& |" m  j2 [8 i! ?6 d; `
set i
$ _) W1 m! t( k6 w6 J5 y3 a( i + 1)
. L9 ~% t- E" M; X, H: G8 {, \
]
0 J! @: s  Y$ I1 o  vlet j 3
" G/ }% P% p0 S/ e. U6 Z/ v1 U) i2 klet sum-money 05 L1 N0 W$ \7 F& q2 E# N
while[j < [trade-record-one-len] of myself]* h' C8 F2 ~9 h) Z
[
8 S" j9 {$ h' H/ p$ x- T0 Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ n2 m8 Q4 o! X5 o+ U
set j
6 }& |9 ^6 Y6 s, l' P( j + 1)

8 v3 X9 @* V( ~( Q$ X6 }]
& i8 Q; T! H. U6 y. [let k 3/ g' ]+ ?  Q  v. C( q
let power 07 K" x. m  v5 x4 T  W
let local 0# [" Q2 N9 _; t/ X# A; p( y
while [k <[trade-record-one-len] of myself]
9 L! s) f: P- {0 e( h+ [[7 v1 n' V3 T$ r/ V' R
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) 6 g4 o& ~! U9 @' I* _
set k (k + 1)
# Q1 {- O6 P7 ?+ H$ s1 |4 G]
2 T, b2 q& a2 Nset [local-reputation] of myself (local)5 J/ O# n( ?/ R0 H
end
, G* f6 X% }! b- s( m( v* l* k, u6 {8 n, T' t% |
to update-neighbor-total
6 z, k# k% k9 ~9 r0 G, Y2 n, }/ _& E& m4 x9 i/ h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 \  x6 o2 ?! k! T) A  p
* S3 W2 k( r. o* e+ p' A$ L' G$ B3 J: g
* g& B( N) S" |0 a
end+ f! Z# F$ l. a* S/ A

8 g+ d) s! Y6 M& j3 o' l  t% ^3 hto update-credibility-ijl
- c: V0 i$ e5 q# k
0 [6 k0 _$ e! E: ]. Y;;
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。) O3 v7 e/ f  u  w' [' W  U* v5 c
let l 0/ S; x0 i: ]5 s& A; f4 \" D% v
while[ l < people ]
4 e* {" J8 U0 _  Y' u% 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
9 d( A6 G: Y( A4 O$ T6 F[* p6 R" |' L8 m7 U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) L! I8 l9 f. b0 r& t* e5 S! H
if (trade-record-one-j-l-len > 3)
0 X: \& C# Q, m; a/ K' e' `$ g: ^6 v[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
8 a  R/ ^" x! `* Klet i 3
( [+ s4 n, l" r/ f6 i2 F, S* ulet sum-time 0
$ ~3 `0 y7 b% ]while[i < trade-record-one-len]
1 u% K5 @, N# J! @6 V" w) X3 O[
# K$ }( g0 _/ v6 X$ T. C1 Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  e- x$ u' U# c3 Uset i
' J5 `8 `' e9 f( i + 1)
8 S6 ]! ]2 d; v! E
]
0 R% r0 e) U6 @1 M- U$ U4 Blet credibility-i-j-l 0  I9 O" Y: i- A" P9 j! h
;;i
评价(jjl的评价)
) ~3 ]: }0 _2 j9 @2 d0 [3 llet j 3# I1 |6 K8 E7 L5 K5 f) U5 g/ P" W
let k 4! T; y9 ?5 d7 W2 f) X$ E+ O
while[j < trade-record-one-len]$ i) G4 v& ~8 J: F+ n  J- ~
[
) p4 e+ T& B0 H  [# [; O4 r5 v, v( ]. Uwhile [((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
) g: ?. R7 |* w, G; O0 Dset 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)
" g6 r$ S  t. Hset j3 n9 g; `- L2 s
( j + 1)
' @7 b: M2 e) t4 R
]/ }* _. B& {- l7 j$ M
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 ))6 t* j# T& f* I. ?* r5 P+ t

- }2 P1 P* I' p7 b2 D+ R  h; P

( n5 I2 R# q5 plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  ]* v* Z# V9 s8 I
;;
及时更新il的评价质量的评价
2 d4 C  ~- j0 x: Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 o& T; Y# V6 ^: @0 h6 z; rset l (l + 1)  @: t1 {2 e6 g0 x# L( O
]
, p0 s3 [5 l0 F/ I- r, ?end
4 k- d+ }0 D: z0 F0 l4 ~9 P
  m. J2 _$ z5 A2 s7 Eto update-credibility-list
& ^" K2 y- K! x- N: t4 L0 Ylet i 0, q0 ~4 O2 |! B- w. x1 A. R0 J
while[i < people]" y, \& O1 H- m$ f8 h0 G0 p
[
- @0 d; I1 R/ S& p, dlet j 0; Z' X) w% Z9 b" h2 q, e; X5 H
let note 0
- w+ c2 W# ], K8 c4 o, Q3 clet k 0$ y7 s% }. b$ q  Z2 G  [8 j+ k
;;
计作出过评价的邻居节点的数目
! P- X* f  r- ~3 B' \8 Awhile[j < people]
2 ~8 G, D- y# a4 S# ?" r& f[8 }! f3 t+ S: I) ~
if (item j( [credibility] of turtle (i + 1)) != -1)8 A. k. z* R' [/ t1 i
;;
判断是否给本turtle的评价质量做出过评价的节点: A* Z9 C7 y% a- S7 ^( Y% G$ i, p
[set note (note + item j ([credibility]of turtle (i + 1)))/ N& [, \5 x. {& T+ a# Q6 q5 b9 \7 r
;;*(exp (-(people - 2)))/(people - 2))]

* M9 y$ d+ K3 qset k (k + 1)8 E, H3 g. [. S+ Y8 Y
]
( b" [" J/ A8 M. lset j (j + 1)
' x9 {  |. _9 U2 r9 b]& e2 W0 C# d; Z3 u
set note (note *(exp (- (1 / k)))/ k)9 d5 O6 X2 c- F6 T
set credibility-list (replace-item i credibility-list note)
+ G& @0 W3 X$ v; r3 A( t; qset i (i + 1)* k" W" n5 q: p6 \/ _: }9 |  n
]
9 p3 ?+ z3 x7 v1 i( K* p8 `$ a  Lend$ D5 R# [! b6 o! r" I

) b3 O! O+ X, |: p4 c9 Lto update-global-reputation-list
6 f5 T7 ]: C% M8 ]5 ylet j 0
) b$ ]0 t. x9 [' Cwhile[j < people]
! a' I" e: K: o: {$ ~% {9 u[
" \7 V2 l% H4 C/ B4 l! dlet new 0
5 v  S6 l5 r4 T; \. c/ V# i; z* `;;
暂存新的一个全局声誉. T/ a3 {1 s) w/ Y3 ^' X; H& o' R
let i 0
8 F9 S. h9 Z  C: t4 E3 Y9 Nlet sum-money 0
# L+ c& p1 o* c1 I% i  ?let credibility-money 0
  j/ q3 h/ _6 ?$ _) [7 t# @while [i < people]
( @$ w8 O. s$ W: V  Y[
. E+ k/ q8 _9 f, Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ h: r  F1 Z+ L1 w7 C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( e( P' @: N. u2 Q+ T+ `2 x  ~- M
set i (i + 1)
) q* e4 q! q! O]) }9 d: X+ [0 w: x
let k 0/ P+ i+ d, T8 ]* _8 D& a+ H$ M
let new1 0
# r% |( ]( _' Wwhile [k < people]
* `- c' ]/ Z% Z[* l% S8 {* a$ o0 y0 x7 u
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)# z2 W$ G( z2 H$ Z# R4 f
set k (k + 1)+ j- h5 H- o  x+ J! s( v
]
2 H8 C+ b5 Y0 y# y- |" Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 e- X4 T$ \) J* t/ S, S) [
set global-reputation-list (replace-item j global-reputation-list new)  g+ V/ D( {& d: t# u
set j (j + 1)0 u5 F; o7 _5 N* Y4 i
]
( x- t! M( ~3 aend* E5 Y' }% j7 ~7 q9 b4 E( y
6 _5 k+ A, a, A9 g* G

9 m* J" x6 ^  j. H& H
1 h/ c! `! I9 R6 l+ s3 M6 kto get-color. W: ], v# P; p

5 t4 ?3 `/ W8 a$ [set color blue
4 ], ?+ M9 A/ m$ w5 r+ W
end
) N- l: I1 G! }8 m
0 L* d* F9 D( n- ito poll-class
: L- M4 S% U; Iend( T  [  l- C8 K9 r' W9 t

# I# N/ v% F$ @( e/ Bto setup-plot11 t, G+ H8 W4 J# u8 ?
7 }' I: s: A! R% C' ^1 R
set-current-plot "Trends-of-Local-reputation"
+ p; w+ }# b% v
6 R, c$ G/ q6 a
set-plot-x-range 0 xmax

" R' W" o4 Q* }: D$ e+ x* M4 U& ^9 T: r& r; E4 ?7 C
set-plot-y-range 0.0 ymax

+ H7 G/ J! r! V# x+ r, L3 j7 pend
0 f7 {$ _0 O8 h$ a! s% r  q4 P0 ]2 j  G! i
to setup-plot23 P" D  E1 J: o6 |6 F5 K

. j, D! P% P& D/ m+ X6 v6 {% Lset-current-plot "Trends-of-global-reputation"

9 ]9 h4 g9 H' h& J" K* R2 B  r( P: B5 B
set-plot-x-range 0 xmax

( j% p0 @$ \2 {  |7 Y, @+ ?9 R: Q3 l5 j  j2 U+ C$ W8 q" z9 g
set-plot-y-range 0.0 ymax

; k. B- ?: [: ~" p6 m$ {end: @& V  ~' [) K% O2 r

2 t( o7 V8 n) }8 d# a) H" _3 Hto setup-plot3$ T, _' ]4 ~( U

, ?! T: X* H$ g3 uset-current-plot "Trends-of-credibility"
$ E" v9 u: p" [7 s
9 I' Z' x" Q9 C4 m/ }
set-plot-x-range 0 xmax

# t! j# R7 U8 N* l, W
$ f; w' T4 u; yset-plot-y-range 0.0 ymax
  H4 A# t; r% W' o
end# @; ?7 @( q3 G

# l& J+ T1 \& P) z7 ato do-plots" `+ n* |( c4 V1 E, N2 j  l
set-current-plot "Trends-of-Local-reputation"1 y* ^1 y( ?6 G* _+ e
set-current-plot-pen "Honest service"/ f4 F& |- S- n$ ~/ \" C* z
end
7 E5 c' |% H# Z9 ]8 ?. t! [/ v; h: \# E; R5 f
[ 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." R! l' q1 s) E/ y( c, o

( Z; O6 G5 p+ P8 r7 o. ?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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