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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:
: R' u9 L4 `& ]to do-business
# \/ Z$ K: D( Y# I' ?, F1 @4 M/ f! o rt random 360
2 Z- y3 h  p# @+ ` fd 1
% Z2 M: L0 y9 _6 Q/ m ifelse(other turtles-here != nobody)[/ w4 R% U. @9 v: e, q: v+ Y
   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.
# e/ G9 v! U" d" V4 `4 t) J7 ^   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * O' m1 ?9 V, v8 X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% B' z/ H, ^( Y; x  d. r& v0 K   set [trade-record-one-len] of self length [trade-record-one] of self: U& H( E1 i1 [6 I  u! s5 o- W& q
   set trade-record-current( list (timer) (random money-upper-limit)); m8 k4 {3 X2 l3 E

' b6 I& h3 E) G- j/ E问题的提示如下:8 K- k; n* n- K+ w6 z- z9 M5 e& W
$ i4 D2 `, K$ @4 b: ]
error while turtle 50 running OF in procedure DO-BUSINESS  p- w& m; }% s8 l+ P& ?
  called by procedure GO# s1 m" h% X$ \3 o
OF expected input to be a turtle agentset or turtle but got NOBODY instead., A2 j% [# b8 B# B; `5 |
(halted running of go)& p" U) X1 c# M0 y- Q
: ]- R2 ~' w4 R3 E! {
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 T7 e7 ~( R8 j  P) S; |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7 a  B+ E- v9 Q6 ^
globals[$ j9 Z" K; @# B; H1 z; Y
xmax
: h5 L4 ~7 f! Vymax
' J: G. s: ]7 K- G3 _! f) U! bglobal-reputation-list6 L& a9 G4 ^* C. e' l) b

4 S$ u8 _( m$ H1 V) i;;
每一个turtle的全局声誉都存在此LIST8 m4 D8 @4 M$ d" P. Q- x2 ^
credibility-list) E2 a' A! \( ?5 G+ h) H, ]
;;
每一个turtle的评价可信度
: b) S* C  o+ H8 a! e; l3 xhonest-service0 _" t% f# r' ]9 m8 G' M5 U  I
unhonest-service
1 q8 s! ^4 @9 }" C/ t$ C# eoscillation
+ \- p% @0 E! P2 `1 ~' ]' Yrand-dynamic/ j, Z  Z6 F1 X' X5 Z( Z3 t! b6 w
]
: s+ w# H1 k; [- ]9 p* Y. o# f# ^2 H# ~# ]# a8 u
turtles-own[0 p: M* J( ^7 i7 {' B% }! K7 ]
trade-record-all
/ P! m  a- B, [8 w: }- ^;;a list of lists,
trade-record-one组成
# l! g% o4 p) T# p, G5 K7 Vtrade-record-one
" M0 z6 {+ ]( \0 N1 A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ V  g- g5 E" C5 u3 j. B
$ y7 P  U: X6 e;;[
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]]+ ^6 b1 U  F; U- b. M& o- a
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]
7 }" t* q  ]7 F6 Q2 {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
/ }* g' \7 U3 a, e# ~7 H6 h- b( Tneighbor-total
" U" K& B# B3 U1 m; u;;
记录该turtle的邻居节点的数目
5 e* I7 K6 q' dtrade-time
7 Z6 D- {1 Y, }" N9 `' [1 Z;;
当前发生交易的turtle的交易时间; q! m8 [. ~* t( [
appraise-give
  y, T$ m# c' i( a( A8 l" d;;
当前发生交易时给出的评价. U3 O* r7 w! B( f+ r  ?- P9 u
appraise-receive; h3 ?2 X% r) C! b$ J
;;
当前发生交易时收到的评价
: @' x0 `; K1 C" E. h& Uappraise-time; [9 I* c6 l4 i- c# y/ E+ x% I4 h
;;
当前发生交易时的评价时间
, N% S+ ?' j0 k9 I7 M9 `local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; V) P# F" [/ Y* M7 G3 W& [) ytrade-times-total
1 t* Z$ i! R4 ^7 T5 ]. ];;
与当前turtle的交易总次数
6 I) W2 ~* m3 j1 k* |trade-money-total
& c+ d; v4 ]# S+ P; Z4 d;;
与当前turtle的交易总金额5 E& `$ O0 L5 M: ^/ k/ o0 I& e
local-reputation
5 K, V  y1 m/ I! o( r5 _global-reputation, a6 q$ A: R3 \7 R7 ^$ ]# g( o
credibility
$ a  r; g2 p  X6 R! R7 w;;
评价可信度,每次交易后都需要更新
! _! k) X+ T* h1 }credibility-all/ c. I0 l) Y3 h, ~$ 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
! j' D; f; Y; h! j5 P: y4 O4 m) F" J4 W' `
;;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
& l1 L3 j. m8 U; E- acredibility-one
' E4 q' c" Q$ |! }8 R( G;;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
# _  |' |& r; h  q5 Zglobal-proportion
- r+ @7 c) {- t" h: C& lcustomer. r  }) Q/ P6 B) I% D
customer-no* A" z, S2 @4 S- @# c/ E
trust-ok
9 @% \0 M# Y& ^" m) ?- ptrade-record-one-len;;trade-record-one的长度
9 H( r! Q: j% T/ y& z! e, o8 U]
$ \5 @. B% K4 l( }
" G3 h2 F4 m: w; ~( D9 Q" O# D2 U;;setup procedure
, y/ E4 |0 B2 R
4 \1 G4 x0 ~- {* r2 oto setup' X* a- q9 X. ~( r
/ H+ y6 r- H& o+ }. D- V3 `
ca
1 Y# b) w( Y' ~; w2 @" s1 u5 X

9 o" ~4 D- z( c7 k. N: ]initialize-settings
! a$ Y+ Y5 E) `9 ?5 W# ^# h. K
! c$ N) k% v3 b2 x" P) f4 _' T
crt people [setup-turtles]
+ `2 J# E# G! b9 H6 m
: c1 }7 w$ l, T/ v& N
reset-timer

4 L" |# ~* _/ T9 t( e5 v- a( l8 A/ L+ W7 k
poll-class
) ~- o% ]# I! C6 }; q

6 Y9 t: t& V& [: Lsetup-plots
+ ]! F7 Z! ?6 f  i, z2 R

) L: G! q; x7 ^1 V) h7 X4 Qdo-plots
4 B& s# I) I, I( |- N& t
end
6 a0 w0 D( S. }- F  q& k, s/ i& x% f" ?; O
to initialize-settings
+ c) A' a" g7 @( U9 P1 ~0 }2 X
! |0 f. H2 \3 R/ wset global-reputation-list []
, ~( ^$ [! O' D4 |4 J$ n: p

; H5 G( m( P) ]3 y0 N5 |5 [set credibility-list n-values people [0.5]
! M  ]/ f; l; T; G0 w; Z4 D0 e) R
- a% B  m# Z# y; U; |0 D7 U
set honest-service 0

( R5 q* e# E* w5 Y/ e4 I+ D" X5 L! Z0 O( F1 C- B
set unhonest-service 0
. [$ i* m# C5 n  ^+ M4 O
3 r7 y  X! g+ J2 b& y% ?- z; ~; W
set oscillation 0

( q- _- R; A6 A* {' ?* X, b& V, E5 O' V: X) ]* @
set rand-dynamic 0
2 D+ u8 U+ h& d8 y* q
end+ p( Q& R! Q! q

2 \( O+ o" @: l. D6 H0 eto setup-turtles
  y1 P& b) T3 Wset shape "person"
9 B/ v) j, Z" ~7 ], r6 T& \setxy random-xcor random-ycor; C6 E! [# o" b0 @0 `) B6 _
set trade-record-one []) B- z4 {- c) H3 j7 D3 c

6 }7 B( L4 r& Gset trade-record-all n-values people [(list (? + 1) 0 0)]
+ h9 ]3 S4 B4 e4 [/ [1 ?; {! R  u

2 c4 U, f& Z0 O( w6 |set trade-record-current []
7 p2 w4 i" N; }% yset credibility-receive []/ ~; y- w$ P. O4 E4 U
set local-reputation 0.5% C) o3 D% H8 G' P& L& k3 J5 R' G& m8 e( \
set neighbor-total 0% P1 Z9 T% ?% |6 o  w! }" _. D
set trade-times-total 0' I, ]9 u4 W# J. ^3 c
set trade-money-total 07 W! h+ L  ]- W( [! g7 z9 |
set customer nobody# u7 j' q- W4 B( Q' K& g
set credibility-all n-values people [creat-credibility]
$ M( j. J  C/ i/ `4 @( xset credibility n-values people [-1]
& }. X* M% ]5 F0 l" Zget-color( D6 b/ F7 I, z; m% U. n8 s

) `( [" Q5 E1 w! L: S; q1 qend
, D% n. |9 A- z  i
6 b# v$ @& X. O+ b; ?8 Gto-report creat-credibility4 x& Z) }2 Q! z1 t
report n-values people [0.5]6 @5 `/ s; d; p- A( J, q( ?. r
end% v3 p  L9 m; P. i: A% e0 F) X1 w
; r: W  \+ R7 `+ B& L
to setup-plots
* |, L+ b7 H/ t. v2 m9 l
8 ]; [( g" ^/ I. m) t! `- U- [set xmax 30

& z7 W& }: [3 d; }: E
( c% ^* k  `; \- o, D5 E, Eset ymax 1.0

: J: Q9 d6 Y5 L: l5 s$ g
+ N. J6 X. j& j9 z* E$ m' q+ C( Dclear-all-plots

8 u9 C# s: q1 t( G
! `5 ~2 Z( g5 a! fsetup-plot1

8 |3 k0 {" E( o5 {8 `% G* b/ U& W' p  q4 j
setup-plot2

9 t1 n% N0 d( B6 F# M9 r% Y7 U+ o* J" d3 |  w
setup-plot3

2 Z6 v, ]$ G1 [3 x' Fend
* \* b8 ?  y2 W- B: P" F& ~% c% j3 [$ H6 e+ |: u
;;run time procedures4 @2 n% d' D; o) D
% D; P' B) \4 t4 D4 w
to go
5 R! ~' |" F/ X7 a1 X6 a# V" N3 ~5 S* {  Z1 e% \7 a! [- m
ask turtles [do-business]

/ c; B3 Z$ {  I1 Y) vend( `* ]$ K. ]3 ^
. T& M- F4 }- N  G0 P4 j: q
to do-business ! ~9 f4 r, ?) o2 T4 X4 Q

- R- V4 E" X- Z2 m0 V8 ~# b- J( I
  \% M4 @: N! t1 urt random 360
! q# N0 K; p) g; e; q. q; y
. r8 i+ X2 Q. [2 y; ]3 h
fd 1

7 [$ `3 ^" C3 u6 W7 J8 [9 T: @6 M. |# K( ~, ]" B* a
ifelse(other turtles-here != nobody)[

: g7 j: I4 b6 N. e* ~% J% i
! q, u! E, @2 a; \* U$ |1 R& ~5 xset customer one-of other turtles-here
3 ~# `5 e' O6 ]% `* h7 E
. a/ {" Q8 I; e  f; i0 c" ?
;; set [customer] of customer myself

: R5 K( U4 n* L6 z6 u+ B+ ^
! j/ t, t; g; s9 ]' t1 @set [trade-record-one] of self item (([who] of customer) - 1)% G- m5 K5 `  F, }2 \
[trade-record-all]of self
) A, O( ~, p( @7 h9 q& [8 _1 m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 n; M  @: R" D" m' z

# `& {  @8 o( K& ?# X4 _4 g. x' Dset [trade-record-one] of customer item (([who] of self) - 1)
+ N8 G( i# g, h2 o[trade-record-all]of customer

. p/ M0 _/ T( e' a/ h# s7 ^
0 ?- J9 {  A) f- ?0 @' W4 G7 {& aset [trade-record-one-len] of self length [trade-record-one] of self

  S: X1 U- {, J$ c# K4 _0 l0 [  U) d# l
set trade-record-current( list (timer) (random money-upper-limit))

. Z5 X" U5 L9 l& [
9 `2 w) Y* J$ \4 A& b8 lask self [do-trust]
0 ]/ D" n2 F+ ^;;
先求ij的信任度
) Q& i4 B( K% C7 a/ ~: q2 e) M! P! a; H: s: B
if ([trust-ok] of self)8 L  a/ k9 D- D- v7 k  m
;;
根据ij的信任度来决定是否与j进行交易[  n# n7 n/ }% i9 O7 j5 o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! A$ R7 f8 n4 C3 Q( s% T/ P' w4 V) {: Y8 ^! ]
[
) f2 f$ t; Y6 H5 ^, J1 M

7 o3 c* \) w8 I9 K" }9 g  Sdo-trade

, O6 [: c: ?/ s, O8 a- v/ v$ c7 _9 f% S
update-credibility-ijl

& E5 m. Q9 e2 Y) K" d" ]# c. Q  \. n5 v
update-credibility-list' [" F# u; S. l4 ^( x! {
0 j; M5 c! O- V0 f" i
9 q8 Y0 F: \. a3 t! K' E/ d
update-global-reputation-list

& k' g( p; y+ l: }6 u5 M
) B$ [! W% k3 @* [poll-class

5 \4 R0 T! x5 G
6 {0 a0 _6 f- i( W* Qget-color
, F, H6 ?* j9 g" o3 |
7 s( V) b" R8 }; U* F  ?" P% P
]]! l) o$ K% q( y4 J( v2 t, ?

* o6 O* b5 F* [, d;;
如果所得的信任度满足条件,则进行交易
9 W) \2 I# D& ^5 A- J7 a
: x! R9 b6 y8 r* f[

4 e* D- H& ?2 R2 |3 K
: z" k6 l4 h2 d! Brt random 360
" }, K" i2 o; i2 O) C

. H# e- Z7 M  Yfd 1
1 m+ R* w2 w  [0 |7 V) }' A; t

) t* @4 V! \6 z' `  B( ^* r]
. t: z4 j$ [3 G" E: N
# f1 e: K" _. i( P9 `# C) x0 T
end
  Z2 B2 o* E- u. A
/ p0 E; \7 m8 f2 f
to do-trust 2 `& |+ W* N. a5 R0 r
set trust-ok False" V$ [7 W! D# ]" \! V* \+ _) d

! {4 ?( q$ O. G; f

% I( S6 `: j( y3 x. w" }# xlet max-trade-times 0
/ M& Q0 t9 k: gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 Y, B$ r. D& f5 E
let max-trade-money 0
( n4 O- D: c8 _& d0 M9 y5 _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  s, Z3 R, W: H9 }' Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 c% k/ K8 F/ P* K- ^

$ X) D1 a# G' \& I/ \* Y6 Z/ d
) g% r2 @4 B6 y: _
get-global-proportion
2 U; N, [; f1 s$ s2 A; e4 J. k# olet trust-value
5 V  W" r! B+ ], ]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)

5 o6 ?5 G' V3 p, E% N; R: vif(trust-value > trade-trust-value)
1 j5 v# G8 p$ E9 k. a[set trust-ok true]/ @: P& F3 O0 _# j2 F
end7 u6 n0 G& i/ z3 b, m
& C0 G. ?) `: R& C
to get-global-proportion: Y. G% N2 A' O2 [
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) H9 Y( A! t% v4 ?, g
[set global-proportion 0]
" h4 c; J% L& X[let i 08 v: F/ m  \, r. L7 ^4 v
let sum-money 00 m2 n  I; ^+ x; M
while[ i < people]
# a1 O8 h$ s" c1 w: x& {" d$ C[
0 T# t9 K& a- tif( length (item i* F; r% `, [) c% z4 b2 E
[trade-record-all] of customer) > 3 )
, k( S  N. X. T( Y
[: v+ M" m- e9 H, f! x
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): _! V3 r5 m" V, M; {4 @# A
]
/ o( W9 k% X( w9 E0 _]8 e/ u, {) ]+ W  [( f
let j 0
7 H/ ~# n8 t0 E- K# k7 Y, O) e; |8 X' slet note 0+ p3 I+ s4 s, m0 T/ j* |' l6 i
while[ j < people]- `3 H) E& p" m6 q) o/ C, C
[
$ w5 h; r. k* Z7 C0 j8 x( ]if( length (item i  _7 U" {- p! ]6 T5 n/ [. }
[trade-record-all] of customer) > 3 )
/ B0 O9 ~2 i/ K- Z1 D3 x9 t8 i
[. r, ^3 L2 i" a4 {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): F- u! @+ }( _0 e/ q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  R+ ~* m& a- T; C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; X) W  m8 d& `; z0 A% M
]
2 I) @: o. F4 r" D, I! v]
$ v/ J( |" ]5 I4 Xset global-proportion note
# [7 t6 z+ A2 d]
+ X. |1 C; n; x" I$ H. Q$ iend
0 x/ L7 u' B7 A2 a9 j. X4 d2 H8 X: q- @! _
to do-trade1 }* }9 R& e3 m' S/ a8 H
;;
这个过程实际上是给双方作出评价的过程8 y4 `4 i8 X1 I) }* D: X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; e% P& J5 h/ b" p+ z: G0 dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( L$ i! V0 p5 }' A6 G' X5 V
set trade-record-current lput(timer) trade-record-current+ h8 b& F5 G6 Q8 a
;;
评价时间3 h9 G" D- ]3 ^8 ]+ O# G! Y
ask myself [" G# [- B) Z+ R( p3 _0 ^  a
update-local-reputation, ~6 O2 A3 h( H4 \# E
set trade-record-current lput([local-reputation] of myself) trade-record-current$ h# W; ^) P- b( i6 `  d
]' e& ^& p9 t% c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ n% ~& H* e* a4 s
;;
将此次交易的记录加入到trade-record-one; Y' N. H; y0 ~5 A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 M: U, i- g$ Y9 Llet note (item 2 trade-record-current )1 V* [: }0 C: z. B; v' m  p* k
set trade-record-current
4 f1 ^; {/ U" H" W: t6 S7 ]: A. n(replace-item 2 trade-record-current (item 3 trade-record-current))
* s% u0 B: X% Z- T+ Z: M9 X& }
set trade-record-current) I% O+ n* O' ?# B% G; @
(replace-item 3 trade-record-current note)
7 b+ Z0 i. ]! m
& I! Z4 S# t% e2 u7 L
2 B9 l* w7 V1 s1 v
ask customer [& W: b  O5 S* ]" w3 ?% ?
update-local-reputation
3 ]5 j9 |: a3 _set trade-record-current
; l2 g% b& c& Z3 W+ _6 k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 ~5 b# d! m. F6 ~* v' _: Y
]: j- _* o% r6 v! s- w
6 P# i$ o& p# Q' X% o  R  {8 T
6 y( i! V% k( p% r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 Y/ m4 J4 {/ H/ h5 e

' u& F0 }+ x$ e$ \8 P: l2 t9 P- hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 C2 C" ?3 R# R$ `; O+ L
;;
将此次交易的记录加入到customertrade-record-all9 ?' ?, P: N: G* `6 o3 A
end
, d& @) p: f0 E  ^4 u, R& ]; P$ O2 P1 ]7 l9 h6 z2 k- x( x
to update-local-reputation% T# X) e5 s/ M+ E
set [trade-record-one-len] of myself length [trade-record-one] of myself4 A7 j: N2 w% _  B# D
% H4 O4 |: f4 Q4 n0 d

: X9 Q. a4 l6 F- ]% o# v6 a% H, H;;if [trade-record-one-len] of myself > 3

0 i: ^9 V& \" gupdate-neighbor-total
, Q' D2 e! p6 J$ ?9 J/ \+ c0 m;;
更新邻居节点的数目,在此进行8 m) q  `( u" w. _4 F) t6 p4 y9 B
let i 3* |% q1 H6 Z# [8 m+ K7 C$ }% |
let sum-time 0
* P% j: S$ a& d5 B) z) o- f, `while[i < [trade-record-one-len] of myself]7 P( x- ~: i+ R- o
[7 Z1 Y" i6 s8 _$ c/ F
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& [1 W. q7 a$ @  e& J' F* }set i
$ A9 E) T& J2 H- v( i + 1)
! P; G4 y5 n7 ]% h7 u. G& K; Y9 L
]" T/ [8 M6 Y6 c
let j 3
9 q  S  ^* @0 R8 l! T* Z4 Olet sum-money 0
2 x( o0 A; d1 }  Awhile[j < [trade-record-one-len] of myself]
0 \# P0 R" |9 l7 N: R[& {6 q4 b, l8 `% q2 d7 g
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)& T1 _7 {2 i0 X
set j
4 M  h5 f) f7 |$ G8 L( j + 1)
1 o  }& W4 \. j0 l0 V$ d
]
. G5 ^7 @. A- J3 W2 [5 ], Xlet k 3, G# ?3 N8 Z2 U" R1 g9 b* d
let power 0' e: `! l! L2 ^8 _: l$ b# n4 ]$ m7 R) E/ _2 H
let local 0
  R, d+ ~2 O0 a7 rwhile [k <[trade-record-one-len] of myself]
( f6 J$ _+ Y) X[# _3 g/ c2 ?! U" v9 V5 s# C9 Z; Z
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) + S+ G1 i7 q4 ]
set k (k + 1)
( v. }' M4 P0 w( v9 v7 T- d. \]
8 J" k  K$ C8 _2 a, h* E* Eset [local-reputation] of myself (local)
; u- D1 K! t/ j2 d: ?end
8 u4 E1 a  ^* K9 F4 u
/ a2 H" Q( O4 @2 y4 }  Z; h: Jto update-neighbor-total7 ^# [6 N) T! ?: o" }6 O5 K& W
' l/ @1 s8 {* n6 p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" f6 u; \2 ?# w6 c" L8 R2 M% |7 D& ?% a2 ^( A, ?
  c/ U! t5 `9 [+ P
end
5 w. f" x' ]& i1 k' y+ E2 P: W
4 \: h" h& {* lto update-credibility-ijl
4 Q, h" b: w' a* p0 h- o# ]4 [- W1 G" _& y, ]) l: F! y1 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。/ B  y& h7 u& [  q% m: [' u; J
let l 0) z) d4 Q7 P! {5 k" k
while[ l < people ]
* ]7 {% a9 d4 g& T4 g. x;;
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" `! w% y% h! y7 {* |6 r) E
[9 H" f& b1 x. Z8 D8 i8 x. {: K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 c+ d9 h* C7 r7 @, d
if (trade-record-one-j-l-len > 3)
# @' @" r( a: u[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
+ }) G, K! s+ f, e: Tlet i 3! \7 Y) o  ?# z6 {  r# J- @
let sum-time 0
' Y/ u) W, d) w/ Fwhile[i < trade-record-one-len]
4 A! ~' x6 }9 F. x, q$ A0 F6 S[
( `# ~" R3 @4 y1 `6 Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( K! m4 W/ Q8 _! K
set i. w$ }$ m0 e( b4 V! {+ ]. V
( i + 1)

/ y" r0 @0 s. x# S/ x8 ^6 T]0 n% X9 _" F+ f, G1 M0 T1 [
let credibility-i-j-l 00 Z; `, w% a+ A& G' e' `
;;i
评价(jjl的评价)3 w* [. K9 f" k) X
let j 3
1 F0 E% t' Z: elet k 4
! h* \. q9 s+ ]6 ?# z  s9 O6 L: owhile[j < trade-record-one-len]
) J- P: p4 H. K- H. b0 }! _( F/ L# I[
' r, w# x7 A* ~5 X6 a6 Zwhile [((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9 `/ x! h2 ]( P
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)8 q: q# H& l5 l7 S9 f4 I: B. S6 R
set j
, k7 a0 k& v. x: Q3 M( j + 1)

2 g) S4 S! A, n7 }]
" g8 u5 k' V  S. f( vset [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 ))% [  E# i$ N& H
  N. `$ F2 Y& ~) d8 M" e) b
) G; d7 N8 ^% \$ |% n. X& L% A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 q1 m1 V- \' k
;;
及时更新il的评价质量的评价6 a7 E% I2 m+ _: B* M! O2 n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) D5 R; p) j, [8 v% z
set l (l + 1)
6 H8 u7 j- n+ ]) ?# x! C]
: R* d. `: C& n7 O! ?! C: p# Eend
9 l( E- Y2 p3 c3 ], @3 R9 D$ [% _) q% y1 q
to update-credibility-list" B2 o8 f0 g9 ^6 _' N( ~0 w
let i 0: [7 k2 q/ C, h6 Y/ `5 @' X$ x: C
while[i < people]/ s7 g, W) D% R$ N: G, @
[
0 l, C+ @9 k2 v" C% @2 L" I+ a6 e/ llet j 0" j" K4 D5 C1 o  s% j" b/ w
let note 0
% l, s; b" R% J' ?3 Y" P. A# Olet k 0
2 V/ H: ?7 {# q3 z$ b;;
计作出过评价的邻居节点的数目
3 t$ b; c2 g  Mwhile[j < people]9 g% c! O* z; L
[
, @: Y7 _1 T# V5 U2 Dif (item j( [credibility] of turtle (i + 1)) != -1)
1 |3 k" E8 H% b5 n( F* K" }. @;;
判断是否给本turtle的评价质量做出过评价的节点- T8 n, z9 Q/ u1 }8 D
[set note (note + item j ([credibility]of turtle (i + 1)))
3 f+ G1 I1 A0 l. k  v  n;;*(exp (-(people - 2)))/(people - 2))]

' g" V( d$ b8 {' C) t* g1 Jset k (k + 1)
( b* C5 o$ M% O  _+ @" V. l, h]% r( t3 n6 }' l- V& a  ^' Z
set j (j + 1)
; H8 L* F3 z3 l* x8 U$ S]
, W  V! p- U) e2 a; ~8 a, y: A5 a  Dset note (note *(exp (- (1 / k)))/ k)
  [: r3 C( f% `( kset credibility-list (replace-item i credibility-list note)
! n1 W, U" }9 H0 H9 vset i (i + 1); E3 d7 \- ~2 t5 k. `! D9 q
]( W% S+ o4 n8 O. N9 o" n8 M
end
8 m. v0 Z* @1 X# b" x! F1 \6 U- X+ N" a; C% G
to update-global-reputation-list- \( T! R" T7 B: @) U6 Z
let j 0+ J9 \* w. `# Z
while[j < people]& |4 v' o2 [& Z
[
& \( C( l+ L( Ylet new 0
1 k6 E! Y% J! G* A;;
暂存新的一个全局声誉
" i( l( I( H' m  z7 v5 _( X- zlet i 0: R( {0 v6 L- j( U3 a5 l/ k9 o
let sum-money 0
; D0 u( V% J& G$ C; i1 Q1 glet credibility-money 0- C6 ~2 I- U  x; k, }& g6 h
while [i < people]: A( R+ F" w+ C2 Q* ^3 C3 }5 `
[
* d) ^, x; H. H* e( c! X- vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 S' E" ?+ n2 h4 Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) e, o/ l3 T6 Y" U* sset i (i + 1)
& J$ G" |5 ~" w4 x( x# G]" M% b3 S# `- Q) l( W
let k 00 Z8 m8 f( W8 h" S
let new1 0
& S  s2 `, q1 j) A1 K; Lwhile [k < people]
+ c' k% y& M: G% w3 s5 P[
- V- x5 X6 V3 Z6 H/ M& Z# E4 pset 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)( b' Q8 h) H. Z) i
set k (k + 1)
2 b$ G7 ]7 G/ p+ z; u- Y9 |]
% H1 I) ~/ B  Q4 `' Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 t5 S/ e6 c% s' O* Zset global-reputation-list (replace-item j global-reputation-list new)
- t; r3 l8 \5 ^) q+ |set j (j + 1)
' e0 f6 w/ G0 h$ j]( J1 Q; z6 H$ }8 b8 W
end
* ^8 @/ E: z' w& z0 i0 F( Q) K" n1 J1 r4 g
& k( _! \. T( H9 }

" r9 r( U/ R" wto get-color* _6 p# A: ^  J, E
: o- N* m- K" u6 |0 T" k5 }) p
set color blue
* x- G0 ?; ]" M8 \% f
end; f$ k& L; ?6 Y- l/ U% S3 I
- [; @+ h' M/ C+ s
to poll-class
$ b( E+ V3 t: N$ l  X% H' i2 y+ }end
! i( }- b: |" c3 X5 A
/ V1 F5 b( j) a. V- Q5 Y+ N6 W, Jto setup-plot1
/ ]1 b. v& D0 o% m4 f+ ^& D- k2 j5 d1 w9 u/ ^1 t6 \& @
set-current-plot "Trends-of-Local-reputation"
% {. Y, n9 Q5 i5 ~7 [. Z3 C
1 E/ d5 A7 o& w1 ~; b" A
set-plot-x-range 0 xmax

* `2 k  g/ T3 r
1 P$ o7 |9 m4 qset-plot-y-range 0.0 ymax
, J$ y9 y: p$ p! j
end
/ C/ k- N/ X. o" H' w8 [+ X/ S+ j+ h' p: c1 O* @9 x
to setup-plot2$ ^. _0 K8 _' m+ O5 s% L2 }- h
1 ~; Q5 \$ `  k9 z3 D
set-current-plot "Trends-of-global-reputation"
" V8 h1 l, F$ V# E- _- H4 f! ~
8 q; r* d# ?1 b9 H, v1 ], u2 p
set-plot-x-range 0 xmax
1 b( @6 `6 x& D# b# H5 d
3 P: j1 s% J2 ~0 H7 e) w
set-plot-y-range 0.0 ymax

  R1 Y' I8 A5 Uend
* h3 {# H. S# u5 e% R  g9 h
! M- X, M! Z0 m. u+ Y1 ?/ Kto setup-plot3' ^% M1 T1 ]3 x  r8 E- `7 D( F

% x  E( ^" G. [# r# e- n6 K0 Xset-current-plot "Trends-of-credibility"
6 K+ ?$ ?4 x$ d4 `5 h
1 U  g% m; O' y2 Q& ^
set-plot-x-range 0 xmax

! {4 z. \& y! }6 I& h4 G
$ J; Y6 J/ n8 @! e5 _' n  l# Mset-plot-y-range 0.0 ymax

2 H" }) q( u- \0 \' w% g6 d% Pend* q% e, Q7 n* O& s3 K0 o
$ T9 [- _& @) ~9 z: n5 B
to do-plots3 @! U8 X. ?' o0 B9 i! U
set-current-plot "Trends-of-Local-reputation"7 G" |( g+ Q# y9 I1 {: z* y8 `
set-current-plot-pen "Honest service"4 C+ f, Q4 a3 @3 G: Z  o2 Q
end
) r- ~8 l6 D6 B' S+ J+ }; i
9 K. v: g( k* [  l[ 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.
3 x' ]6 Q- S) j6 o9 Q8 h8 T+ F2 i0 e  ?+ \$ a
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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