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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:7 F* P: p1 b/ c3 W1 }0 P! |( v
to do-business " i( |7 V, }4 s6 ]5 {/ M+ h* N
rt random 360" }& z; ?- W" r; L6 S5 [0 A
fd 1
& Y! K' p3 D: Y# r ifelse(other turtles-here != nobody)[, M4 L) G. v; U/ h; i. m4 [& D  N
   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.
0 E/ J* W) h2 h9 f3 t9 V5 a& c  D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) i9 j) m5 u" w$ L# _6 l: [4 G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 T( p: ]% S0 A  X; t
   set [trade-record-one-len] of self length [trade-record-one] of self' H& v' r( M; R/ F0 y
   set trade-record-current( list (timer) (random money-upper-limit))2 R, C( c/ q' K* C$ }. g4 ]! [* l
! g$ `& D1 y8 B) Y
问题的提示如下:2 m' q9 i: e, G' L2 S

% P/ t6 ^2 I7 L; herror while turtle 50 running OF in procedure DO-BUSINESS
& S! T$ v* a/ ^1 f  called by procedure GO4 @  v& E) O: s$ S; d2 B; l$ P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  ^9 J: F2 O( u
(halted running of go)
8 |. q. Y& O3 q7 [, U7 x) X) _  S; ~. s2 \* ]/ l
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 s" K% G' {& P$ H2 \' H( Y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: D1 J% |) h6 A5 d1 w
globals[
  [: \* o' p2 _4 Q8 rxmax: o7 A4 E" ~1 U3 }% {/ T
ymax& l, Y7 M/ l2 G: e2 q
global-reputation-list! F* x4 m2 }  n2 r

1 U( e+ ^" P) m% F;;
每一个turtle的全局声誉都存在此LIST0 e  n3 l! @3 N7 ?. P6 S; x
credibility-list
* T; Y0 i- Y2 ?% }! s5 g;;
每一个turtle的评价可信度* ~+ \4 t6 ]0 W2 Q& {& t6 D; s, K3 k
honest-service
( z; r$ a$ _2 c/ _; {( i1 {) Wunhonest-service
7 F; n' V/ t- M9 ioscillation! C- L/ O  q8 Q& x4 v- e
rand-dynamic
  f; M/ u3 N3 n0 F# U1 e) m]8 T# D# k6 i1 N  I

- d) g# a  u1 Gturtles-own[+ Y! N% r; _0 ]( ]+ x
trade-record-all
% D! G5 K3 v: ?  Z7 V- ^;;a list of lists,
trade-record-one组成. s& ]6 g& u1 Q8 A9 \  @+ S0 S9 n
trade-record-one
$ M# @2 i, @7 o; C1 E: `9 P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* y/ Q' T, A  {

, V9 S3 i3 W) R: y8 E' x;;[
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]]
" j  n4 c9 n, \$ `+ Z( ?$ q/ B: A  C0 ~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]
% m8 n, t# F  O; t" x! _; s% Vcredibility-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  o( z9 a9 R6 A$ [
neighbor-total9 x6 @( y; e. h; H/ I
;;
记录该turtle的邻居节点的数目
/ C8 _7 O7 G; o* itrade-time3 T# @7 p3 X5 x- L, O$ \
;;
当前发生交易的turtle的交易时间! M; m" t) p7 h/ e9 B& u, C: K$ u
appraise-give# f; X; X6 I& {: ~4 z2 ]2 i' p
;;
当前发生交易时给出的评价
4 Y' }( o. R) r& Y% n3 X9 Iappraise-receive* ]& j0 ?* D" p2 B+ Z
;;
当前发生交易时收到的评价/ e$ z5 R" c  A
appraise-time- {4 Q/ I: i8 j& F
;;
当前发生交易时的评价时间
( Y# X4 z* F  V& \6 G8 `local-reputation-now;;此次交易后相对于对方turtle的局部声誉  \) z3 f" b. L  F$ }, Y* B& e% Y
trade-times-total. E1 M* ?- i7 \
;;
与当前turtle的交易总次数
& v% j# t0 t0 O* B# a+ }trade-money-total
, _- p9 K$ v6 d. x;;
与当前turtle的交易总金额/ ^2 @; o, Z6 J
local-reputation6 U! Z# r* |: ~0 R
global-reputation
6 @& L/ W$ J9 p/ V4 @  c  B* Ucredibility
, I2 }) ?% v$ v; N$ T6 m;;
评价可信度,每次交易后都需要更新3 X2 r- s& K: @$ N0 B: B
credibility-all3 k& l; g5 z. f. N6 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
, j$ k8 ]7 b8 _2 H. U  b1 r9 O$ @  k- \% o: s! i
;;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' l; h  O; B/ A
credibility-one
% j3 P& W  A2 A1 d$ Q;;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
4 P- k- ]9 V$ rglobal-proportion
! v3 T* q- _9 ~: j, t& a  ~customer
' d: s: P' q" V5 _customer-no
9 S8 w# [  |* [" U7 itrust-ok" a) n/ M- H) C7 r) X5 R5 i- Q
trade-record-one-len;;trade-record-one的长度
' M$ [6 Y4 j3 s$ R- Z' M' H]# w) s# S7 ~6 t/ K% G8 o
% ~$ X3 f0 [, }8 g4 f4 Q; d
;;setup procedure
9 ~1 E# g1 e4 @  C# x
( k( j* L/ Q2 ?. m1 S# B# _to setup# g; ~, N7 j3 [- u- n' J; T5 D+ E

) a( B  A9 |% R" O) lca

! J$ `) d' v, Y/ A7 x" S; _' q' Z" y) W
initialize-settings

2 ?7 X  W, |8 X2 _0 p4 V; T' }2 O7 o  o% Z0 j
crt people [setup-turtles]

8 j$ m5 ^. K. W. O3 ?: l7 ]" x  O8 }- ?. h9 s# k
reset-timer
4 C+ G8 ]) k7 _
. o  y9 I5 ^+ d. X7 G
poll-class

2 |0 m+ O1 e( E7 y8 [
& ?! N" D( L+ p' }7 K- z3 Usetup-plots
+ j/ A$ s6 Q4 n: Z+ ^8 C$ U

9 m; c$ K  R- }2 C# k$ z( a  X( ndo-plots
! M+ T+ \! U  z7 u
end* V. n- z$ d8 E
) c5 ]+ `! v- S% t0 w" j
to initialize-settings3 ]9 }( ~) P" K: f7 D
4 d7 B, e1 w. ]" _2 I
set global-reputation-list []
$ T) e9 I; ?/ M+ r# a% U$ w

' E) j; Q2 L# {1 G7 Z3 j) {set credibility-list n-values people [0.5]

8 o  |9 c- W; E' H
, ?3 A: E. |( E, E$ Aset honest-service 0
+ p% W: [  N/ _  k: q" a5 l

+ R' |# G6 i% ]" W6 G' Xset unhonest-service 0

, d/ C" L  Y5 X
$ J! x. I0 V; s8 O8 m( Y) uset oscillation 0

$ c- q& L. m/ \3 \6 `# Y$ g7 Q2 X  |& J7 w
set rand-dynamic 0

$ g; D( I) X5 ]5 P0 C4 T1 ]end0 a" q+ c, v2 t6 x
% ?: }8 n- l+ S# g9 Q4 e! H+ z3 T
to setup-turtles
$ l; c8 ?% U+ r- d/ Bset shape "person"( y+ A. g' \2 n$ I/ `  K6 a
setxy random-xcor random-ycor% f9 r8 G0 T8 y$ ?
set trade-record-one []  V7 q5 y1 }+ D/ `& k& A

8 H$ t- ^. _* W& p' f) ~set trade-record-all n-values people [(list (? + 1) 0 0)] 8 U, h1 R3 ]7 \# V$ O5 F6 ^

9 [% p2 a3 f9 b: sset trade-record-current []
* L) N. S4 J' v# E( a  O, F0 gset credibility-receive []9 q1 {) d9 n6 c8 h5 o% u. a
set local-reputation 0.5
/ l2 Y# y3 ^0 {; pset neighbor-total 0/ t- U% d9 J4 e( k' J9 B
set trade-times-total 05 @) |$ N- n) \0 r- P+ S
set trade-money-total 0
+ k) L' \* R( Z; D) @5 g/ zset customer nobody
3 _  k$ B6 q+ R1 e  M* i4 Yset credibility-all n-values people [creat-credibility]
( t/ K3 u" U6 gset credibility n-values people [-1]1 ^; \) [- C5 X! j
get-color) L7 K. h0 J7 {* X: f( H
. K1 l3 O8 W4 j9 o
end% ~# ]3 I3 |4 @, L; ~

! \6 m$ X1 ^* X$ _6 nto-report creat-credibility+ s6 D$ m$ x, J3 p3 d- T5 L# h7 G
report n-values people [0.5]: l' O6 s9 ^) N1 w) ]5 t- g& }; O3 j
end, K8 B! Z; q3 h1 |9 F
) E- i" P9 [+ d2 ^8 l7 Y- ?
to setup-plots7 T/ n# h$ U$ k6 ?6 @5 \! B" F

) s+ j: y7 t& r- |set xmax 30

/ h7 F" t6 {) Y3 k. S5 m+ `8 k0 D7 l. u4 K
set ymax 1.0

1 |" ]: m! g5 [- T" M- {/ a
2 c  Q* z9 g3 U  ^, M8 z4 Dclear-all-plots

- k# J  U0 M% l( ]" e1 O. l& H, C0 }* R
setup-plot1

5 M3 u8 V3 w. p0 |# [! q+ L
7 Y% f# m# F. Y" k3 nsetup-plot2

# U2 d1 a/ D! D; c3 q* k1 q
0 l9 ~2 U3 q9 G- v7 p# V! @) ]setup-plot3

( [$ g6 m$ z2 U4 t3 k2 C2 |  Eend
& K5 c+ ^; U9 n* h! I( R) B  W) z$ X: `' {, @3 M) x2 ~5 M
;;run time procedures6 a( s7 ~. }! D* f, U
. n8 T$ p+ R4 J
to go& v5 M) P1 E5 M7 Q0 S; ~

0 F$ _) ]. k- [ask turtles [do-business]

7 R; y* R9 Y7 Aend- D, ^7 w& U( W. |3 C5 Q! E
+ {% `. r) v. b( H
to do-business
. p) `2 ~% Z2 m- g' l% _9 P  x
! ^: O9 ~$ n  g7 n, K0 v

% t( z0 s6 p8 Q* y- s; |rt random 360

" Z2 v! P. c1 v/ A5 i+ f
" B; T( O, D/ v; w& xfd 1

: R& K7 X3 f' S* g
$ J6 l' \: P' ?ifelse(other turtles-here != nobody)[
9 N6 D% z# n0 z8 d1 `
* W3 m1 e6 A- N% g) N% f
set customer one-of other turtles-here

' a- ~1 B6 Y2 y: r  Z
. c. ~8 l" ~! R1 D' ]% ]4 F. l( F;; set [customer] of customer myself

  f* g$ u  r. y5 a" u5 ?% C
) \: t* i, y( V& aset [trade-record-one] of self item (([who] of customer) - 1)
/ J3 a7 E0 g* f/ d[trade-record-all]of self
) t( P, x8 @( Z+ H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 \" A* @" T) i' u
0 Y1 q4 c# j3 X7 Vset [trade-record-one] of customer item (([who] of self) - 1)0 u% G3 T7 |) ^. Q5 Q
[trade-record-all]of customer

0 A9 l7 Z$ K) }
, f/ A- Y1 f( n# a7 v" N, o7 Lset [trade-record-one-len] of self length [trade-record-one] of self
# ^+ I7 w0 i+ t: Z1 Z7 n

: h- ]& `5 Y* \/ ]" X+ ?: yset trade-record-current( list (timer) (random money-upper-limit))
* @( ]" o7 w/ H. m
  }7 j5 q% o& n3 H; X3 Y6 E
ask self [do-trust]
; r1 t1 i4 V% r  a' h: [$ H;;
先求ij的信任度
" ~, S2 L1 f  Z3 b( P- v5 V! b2 k
if ([trust-ok] of self). \) o% i- G) B3 j3 T; {
;;
根据ij的信任度来决定是否与j进行交易[
( X2 }% K( |$ ?3 w2 q6 Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) [, q) E/ y: z/ r2 K

1 r. N. \, L: G; \[
: H/ r2 U- X" i0 R
9 a. k* s6 P9 c, C) o1 |& D( S
do-trade
0 e+ T2 |7 D9 n1 x) p* X
* q$ L; q4 K6 r$ u
update-credibility-ijl
0 x& L$ i) k: m1 e# D! k+ U  r6 f

! ?* q6 \: y2 m( D' r+ @/ Rupdate-credibility-list
" ~" F  f2 `, A! S* `4 `, C0 l- ]
! ]6 X: p: v, X8 M8 f; @* D+ b

3 o4 q6 x; D7 \: T& E! zupdate-global-reputation-list

4 z/ T4 |/ h/ \6 h0 ?0 R
" {: T6 j5 s6 J& L  D6 epoll-class

( ~0 _9 q4 G: W% f( \" o% @) y+ C. t- w/ j  Z' H& A. J
get-color

$ r( a. N  \7 b8 t( }9 k1 G" u! f' }  v% _  l- |- I/ ?$ U
]]- \$ @2 ~7 z6 D" \) e

9 U" b) ]4 B# t;;
如果所得的信任度满足条件,则进行交易
0 e) e7 Q6 N# m: i
3 w/ ~4 o* v& a5 a" }, T3 j[

& e4 D7 V$ @2 j3 L6 l# W- l; I' E& E  ?, g  Q
rt random 360
& V/ x3 q. m% s8 c+ g
* Q- w& u4 R; v' X
fd 1

0 N4 |% n. F' i- \3 J
7 o8 s8 B" w, T% a- D1 y+ d6 S]
* W' P( H5 N3 f+ ]# {; [1 H
$ z0 s" b( Q1 N" d
end

; ], D7 I, a! ?* M$ W6 Y% @" s$ ~; E6 {4 ?1 d* N) p1 R* N* \
to do-trust 4 |" W0 U2 y# O2 U: {
set trust-ok False
* b# Y' S; C7 s/ N5 n
" Y- Y# `# @  G  X

7 ]/ {, I) r. h- P$ ^5 f$ qlet max-trade-times 0/ o. [+ h! ?1 B0 C- S7 m* k( o- M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 a6 n+ \! Z  ?. ulet max-trade-money 0
- T  t+ e9 ~& _" }! `' [% eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" {, F9 a- b" T( b2 L, B: A& t- b% qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 e( z2 i8 V$ K. n* p8 K1 i+ J4 t% T' U5 n# Y) Q; R

; p- U8 R) o, Q3 h6 d5 B# kget-global-proportion
9 J' Z' S. u* X8 ], `! Slet trust-value
. w$ X/ E: x9 ?$ ?* k/ [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)

& g& O# L4 u) n+ i7 Yif(trust-value > trade-trust-value)
2 p/ T4 o& [* X- F[set trust-ok true]8 h0 R) M% A* U, u
end
# @% m1 s" I# Z1 |3 m* f, O! r# `' I) e& U0 G
to get-global-proportion9 R, H4 ^$ _% a( H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 f0 V& D. F" Q, E" w
[set global-proportion 0]
4 E/ A& E! t2 U" ?. c: ~& L3 N2 [[let i 0# t" e5 H  ^( t
let sum-money 07 C  Q, @* [  X4 |# ~' ?+ b
while[ i < people]: u4 m6 `/ F% e4 l% @9 r$ S4 H
[9 d7 H+ ~8 b# ?& y
if( length (item i
9 V: f: {  T- A4 _6 c[trade-record-all] of customer) > 3 )

1 O. v+ Z+ L7 a4 |) R- O: O  L* U[& r8 j6 t9 f; i" j% D3 j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 V; E4 D- o  S6 K: g) p- O0 B
]$ Q+ j2 s. d3 R$ R3 {
]
) F) P4 U  v3 `' N5 t2 ylet j 0/ ~6 J4 y8 N2 Y9 Y
let note 0
: P  u5 N% J6 p' J* b1 Twhile[ j < people]
2 f0 h1 t. N) f6 m: N[5 w" A  C: c* O5 g6 F' Z5 o  w! \- ?
if( length (item i
3 |2 M' S5 ?3 ?, R( F8 A1 Y[trade-record-all] of customer) > 3 )

( V% k  E! O( G" x[' J" ^/ e  ?) h2 t3 _# p% L
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  `6 A' F5 W5 Y- O1 L, l, j# h" M
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 y1 Y8 P$ h8 X! w  e( Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: I# e; G) v% r; N% A
]
' V9 [" `) d% z) F9 I1 {]
! p& ^+ ]! Y* E6 T. o$ nset global-proportion note
. E% V. p2 D3 G3 ]+ L& N]6 R! n; w  C5 K
end
* @, c$ x& x) i8 ^8 ?( t! J
9 n9 i) q$ `/ q1 V* [to do-trade
7 r2 p. ~; I& K# W; G7 M4 };;
这个过程实际上是给双方作出评价的过程
7 U) `' s5 Q& A* }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) p! a6 f' P  \- R. ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ y9 }+ }5 p4 N$ `
set trade-record-current lput(timer) trade-record-current3 |; W7 I9 f" ?
;;
评价时间
' c/ Y- O: x0 H' Y6 B, g, J; Z6 xask myself [5 s( o7 f  y. ~* f
update-local-reputation) ^! I( P2 V3 [2 s; u  c( D/ g2 @
set trade-record-current lput([local-reputation] of myself) trade-record-current
# ~* M/ o& _* `4 W* ?2 s" _; n]" [6 L; {" g$ ]$ E( r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, d3 V! S- g( a( T* k$ p' B
;;
将此次交易的记录加入到trade-record-one
) x5 f4 s0 T0 u6 {+ nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): c- v, J! F1 \  N! K0 U
let note (item 2 trade-record-current )
( e4 m0 D) {, ]2 ^% Xset trade-record-current
0 z7 b$ ?2 C! {/ v* v(replace-item 2 trade-record-current (item 3 trade-record-current))

1 V3 m; Z  {* l4 `8 `set trade-record-current
. n& S2 S8 k* F4 j1 t; u$ Z(replace-item 3 trade-record-current note)
3 w, V# E9 ^5 W) \! d4 E: T, R6 r
4 y6 W3 F- Z6 d! O1 _
. K% n1 p0 H4 [# m% m
ask customer [
$ K6 Y- y0 v$ V7 P( Supdate-local-reputation
' I  E6 P. l1 mset trade-record-current
$ C6 _. X! E9 V* I' ?& Y/ Q! h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: _# F( J. [. j7 o
]' E8 k9 J5 i& N# H

+ C; _: o  ~9 F+ M

6 h7 H. F4 K2 A1 S" Z( Jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 t- H9 r# F& a$ y: a. V3 u* B- H

7 c3 d# Y9 y5 d% b! A6 |# R. m+ gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 h# f: J* h' i* `% [$ n2 }" E. U;;
将此次交易的记录加入到customertrade-record-all5 i) o, n/ I- r  z
end/ i  n6 T0 r- j& _' _# l

" A# B( a7 Y" v: v4 l) pto update-local-reputation
+ z$ \6 n- r; Xset [trade-record-one-len] of myself length [trade-record-one] of myself
1 G; D  ?2 @1 w, R$ u
0 ]$ p( F: e8 @" h7 S( y: ^  {/ @, K- c7 o
;;if [trade-record-one-len] of myself > 3

' }$ u  a7 O7 T, x& q! Wupdate-neighbor-total
9 ]' H# c$ g3 r' O$ Q1 p3 Z;;
更新邻居节点的数目,在此进行
8 ^2 Q0 p8 l" hlet i 31 `1 r4 Z7 f% M" E2 K6 ^
let sum-time 05 Z6 I9 O. G5 y
while[i < [trade-record-one-len] of myself]
7 m3 ?  N, X) r1 _8 h0 S2 v[6 L$ c0 V1 Z9 u9 T- g7 _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& T% ]! o7 D" r7 x
set i
1 u7 w+ @: u. K$ F" u' }( i + 1)

3 _# ~2 l; o; l]: K7 W0 Q0 _' A# ^
let j 34 M3 v: A, Y! n0 Y, _
let sum-money 01 R0 B* I8 m) u
while[j < [trade-record-one-len] of myself]
5 i. q: U  A4 i. w) k[
" G: Q( E0 n% E; t8 a! Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ O2 r2 i7 K% T, v' u" F
set j
) \% {; F% A* H( s( j + 1)
3 ~3 F; E2 X( q9 H
]
, D* P2 W9 N/ Glet k 3
, X; w  Q+ ?: u) }  I  C7 i8 Glet power 0
* h3 M9 `" U7 }/ _1 Q. `let local 08 W$ L2 g% Q) e( [, h  Q9 k
while [k <[trade-record-one-len] of myself]
- A: C6 G2 \* J$ g9 @[
2 l: E% X# C* R5 Iset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) / `, E8 l2 v$ b0 p
set k (k + 1)( C( a. \; U# I& ^  C. H7 R
]
) e, @- o# v- S4 a( c1 wset [local-reputation] of myself (local)1 h. w3 p7 B( n
end
! m" H6 B2 u6 z; U& `& X! I: @! e- i0 j( z- P, _" y3 B
to update-neighbor-total' R! T* J  R) U, K) d! B

" ^# Q3 }: S  uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ b, K' x" |4 {5 k4 @5 j$ I" f- Z% S( Q+ H# t! ~" S

# Y1 Q; {' y' Y, a' Uend
+ q$ ~" q$ T- Z* H4 `9 {1 ?1 h
- i3 K" S' N: {- s1 j# ?$ ato update-credibility-ijl
" R! b- g% J* r8 S
  q% N& ]8 A( _2 A;;
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。) ~4 f0 h# F# O! B
let l 0
0 @5 f4 Z# F; P: f4 E0 m$ Ewhile[ l < people ]
# F2 K1 T, p  B0 Q, v+ C/ q' r;;
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
& F( T, w0 W3 R, \8 |6 V# {, l[- q) F& z' P# j$ h
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 ^7 T7 C! e& \8 a' F, ^. iif (trade-record-one-j-l-len > 3)
, P' ]0 s: V6 T[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-one8 m* R0 q) _5 ], e; ~0 U5 J
let i 3: W% n. m% Y  A; ?5 F
let sum-time 08 I- s  M: g0 K- E5 \6 b$ P0 J
while[i < trade-record-one-len]
* @+ e4 K, K( \: a3 z+ h[5 Y& {. }, ]0 O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) r- \* F' x5 r, R; S- S9 u1 Aset i  Y2 ^- j6 O- B; g0 v
( i + 1)
" t* M7 d7 C7 v" S
]3 z' v" P  k2 y# ]
let credibility-i-j-l 0! `' W2 R9 r0 e& [
;;i
评价(jjl的评价)# v4 p7 `$ Z& P* y& m
let j 39 h) ?& y$ J) w) @4 Z
let k 4
* }$ v% D* D0 ^+ G6 a+ A. awhile[j < trade-record-one-len]
- H. t- @3 C0 J+ ^1 J# h: w6 f* X[7 B$ \( o4 c' Z: w4 Z9 ^. l
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
! ]  m: P7 v( Q- Y: C+ l/ l# Uset 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)) Q+ O# M& p4 Z4 m0 [( }+ x* a
set j$ X1 k( v9 q: @- {# ]# Q
( j + 1)

: R1 x9 P0 f( c# ]4 W- ~7 F( _]8 W0 X7 X( R# m6 D% k3 h
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 ))$ ~* C" x6 j+ s0 L" I7 @

( |8 P% I8 L: |2 I6 P0 L

$ w) t$ @4 G: P  L4 N( klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), z0 [' a2 e# u* B$ U& E
;;
及时更新il的评价质量的评价" C3 c/ X  |9 n4 _1 M/ o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  ?8 M+ g& H' a' F; Oset l (l + 1); ~6 ~& s/ A# j& o) ^! u
]
: V# ]" F7 \6 x) L+ V' uend& x/ x0 k2 u7 C* V( f0 J2 i

" H+ |- }  h- d* Z; K, |to update-credibility-list8 _; k$ m7 r) U/ ]  F) @" |
let i 0+ c; R% y( b4 P' @$ e5 I4 N; c4 N3 W
while[i < people]
- N$ t& o# `* G% m2 g[
; @# ]# f; p. p. I2 @: Vlet j 0
3 s7 Z6 {" z1 B9 ^/ vlet note 0& L6 Y6 J' K: d
let k 0) a6 S" X. [4 Y' t, X" O( K+ u& ]
;;
计作出过评价的邻居节点的数目* @) k' c) I% |& b" J
while[j < people]
/ a' ]. l6 k* n5 U- }8 m[! _! K9 H( [3 I: I' L! q1 i
if (item j( [credibility] of turtle (i + 1)) != -1)! @; N) ]* C) B4 z, J8 }
;;
判断是否给本turtle的评价质量做出过评价的节点
1 ^( f2 O6 F7 [$ L[set note (note + item j ([credibility]of turtle (i + 1)))
4 T( M- V) s" H. {1 b;;*(exp (-(people - 2)))/(people - 2))]
+ ~6 ?8 r1 N; U7 e/ M
set k (k + 1)
; r5 X0 b  L) @5 W]
/ p) [7 E" l# G3 |/ |7 x2 Uset j (j + 1)% Z* |% |9 G9 Z/ Y! I
]& H0 H3 R6 J0 n$ J. r6 q% c4 q
set note (note *(exp (- (1 / k)))/ k): _9 s* a$ L$ Q2 L; z# ^
set credibility-list (replace-item i credibility-list note)7 o7 E; Q( j0 i7 w
set i (i + 1)
3 z9 K2 S2 M1 c+ P/ r]5 Y5 N9 u& P) V  T8 {, g  h+ g
end
" ~/ `# ]0 x! p- e
. l  x# _; a$ N* x; sto update-global-reputation-list
5 ?6 v# L+ W: \let j 0& e3 Q! r" x/ f6 S) P
while[j < people]8 g0 I) t7 ^0 ~; g
[
, o+ @. n6 A/ H6 l" alet new 0
% S# Q9 u' t% T6 [7 ~;;
暂存新的一个全局声誉# A3 a8 x9 K: _5 b& I
let i 06 S1 |5 W7 ]6 F3 s6 w
let sum-money 0# z9 E5 q* V% b0 Q  v
let credibility-money 0
. |# S7 E1 p. [9 Gwhile [i < people]$ }( a" A0 f- y& x0 @6 R
[
& N) [5 u- Z) q# i* Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* i9 x- C* k( i' T* eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  G) k; O  |% j) K! k# g% Oset i (i + 1)
9 ~6 M; o* j  g, k" _; X% u' f]- t$ {+ i% g3 a7 C/ {
let k 0
2 `( z! U* ?' x) Mlet new1 05 Q# ]$ c9 k; n5 G3 K
while [k < people]5 Y! n9 O; G  s- \# U. d. p1 k; W
[
* p' g3 D  {2 z- F( Sset 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)
# L/ D+ W- W, M- K0 Zset k (k + 1)
. J" h$ \% \. U]
# ?1 Z! r" V1 Z3 b" v7 N8 c; Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( L! F4 j, n3 \
set global-reputation-list (replace-item j global-reputation-list new)
9 X1 L- J$ P' ?5 ], Hset j (j + 1), L7 K9 E5 H7 Q! d& d5 ~3 Y
]
+ {  V9 Y( _  P1 K, i/ zend
) }( V5 d! h% x( H0 \5 I* Y; u, n% P& S" {
! n4 o6 q- Q3 y

: a  Q6 n/ R0 C* u" n6 N  U6 j* Mto get-color
8 b- j5 _" @- l) e" _) y) h3 z6 B4 Y+ g9 d- ]5 }
set color blue

9 {! ^! G. Z' t% z9 X, d" _end
( t& Z; f, e' J3 P2 R6 Q- O; q& I" b  a$ f( p! L
to poll-class6 X0 i( j) c3 z+ |' l7 o/ B
end
$ W; B) c2 E/ F' _8 u2 _1 R# x7 a$ t( J2 a8 X/ Z) C" J
to setup-plot1
: F( U* Z8 ?7 n/ k. f
# D; ~  h4 V* U3 t. A2 |. fset-current-plot "Trends-of-Local-reputation"
: n$ `% I3 p; k& [% e

9 K7 A/ o  I( m: dset-plot-x-range 0 xmax

( ~6 o. t7 W! N
! d; [/ G6 t3 Yset-plot-y-range 0.0 ymax

8 \$ C5 n# n" T9 f' F1 A- uend
, b) }' [% `' P7 K2 ~, S/ O# Q! k6 I# U. C* y7 [) f, W, |
to setup-plot2- A7 {/ l4 B# I4 ?

/ l5 {9 n0 R) Y) N& y7 xset-current-plot "Trends-of-global-reputation"

6 O% R9 n" a+ R
* h2 M: `$ X& }% N/ p  P* ^/ Zset-plot-x-range 0 xmax

) I5 S8 ]) B1 [, p# D- `
! I; T9 t* o# @! rset-plot-y-range 0.0 ymax

) z+ L0 j" j: r' G2 I! v* ]' }end
' }, C$ \8 h1 ]' H" O
  c! b6 a0 p4 i* B! fto setup-plot3
: W3 Q) r: |3 N: E: Q- f2 D8 ~% u2 P
set-current-plot "Trends-of-credibility"
+ R* J2 {& y& Z: s/ s) O

& g% X6 j3 l/ F$ |+ uset-plot-x-range 0 xmax
! }1 R: j- h. U

8 }/ @/ M2 V! _2 Zset-plot-y-range 0.0 ymax
) Y2 h8 z* {+ d, s* {
end
8 `9 a2 n; X% t5 e/ Q- r
7 e; \3 o1 t5 Dto do-plots! I7 _) Z0 B& W0 G7 {1 {  k
set-current-plot "Trends-of-Local-reputation"
/ \. M9 L8 h! x! ?: Y) s9 V- z. Sset-current-plot-pen "Honest service"
3 {; f( C' Y: @1 Dend
6 d" L9 K# N% ^
* U" s) {% A9 W/ k2 j1 ~5 d: \+ 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 F4 m" T' k1 S9 p4 s
. O% O" ?) o5 x' P" o7 |% r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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