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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:+ e3 ]$ `+ y1 m, f8 A. b& ~3 F3 k' v+ m
to do-business
4 D0 s* A0 Q: o! z2 n+ Q rt random 360
) E3 y1 f" m; x% Y( Q. [" `( A fd 10 F/ b, x/ h7 m! |% Q$ o
ifelse(other turtles-here != nobody)[
* ^7 z) o6 o6 c4 V0 b. l+ C   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 e9 V2 ^; m" I; F- A  n# x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 j8 v2 i8 l1 h7 _) Y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 p5 [/ d. S1 l3 a7 x$ p0 i   set [trade-record-one-len] of self length [trade-record-one] of self& f$ j5 K9 \9 k4 W- v+ R- L
   set trade-record-current( list (timer) (random money-upper-limit))3 b  |. x5 K# O9 Z
3 m8 X3 U% t" I+ r
问题的提示如下:
; ?8 a/ W& S9 E7 k: ?2 a6 V) l0 [! j' U" A- N) E* Y/ X
error while turtle 50 running OF in procedure DO-BUSINESS
2 V* W* G1 g, B1 U. y  called by procedure GO
* L7 R, K% K/ b4 k$ K7 c6 B! XOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 i2 S( U' c( S% V
(halted running of go)2 P: ?* X$ [2 v8 S( w% H, B
' @* G- }! [, Y% H; W
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~~
  g* U. Z' n5 B  A1 W- R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
4 k* H/ g* f, ~+ {9 Iglobals[
2 i+ K; t) F1 Y) f, txmax+ |: R7 `; ^& f; c) C
ymax
2 Z( |' \7 J0 s# J% t' \4 H) tglobal-reputation-list
5 [* q0 M" E, C( N
! m' H# }" @' f;;
每一个turtle的全局声誉都存在此LIST
8 r/ l* k& B5 Z  s  t) w) ecredibility-list0 r1 e+ U3 c2 @& a# d2 R
;;
每一个turtle的评价可信度. w/ l" E# ]( j
honest-service0 a/ T3 H, l9 r7 H9 x: W
unhonest-service1 r5 y/ H8 M6 M" {( Q
oscillation
& L1 z% W0 n$ n- [rand-dynamic
3 p# I0 z5 N6 u0 _/ q]4 v1 M) \' Z3 r

8 H' k0 q( t* Vturtles-own[5 \( O  n- _1 U5 `2 E2 K5 l) B: [
trade-record-all
* ]% g' j' B5 }% i& i8 K;;a list of lists,
trade-record-one组成
0 ?* P; p" b* K* d4 H; A- htrade-record-one$ l: {4 H/ D  k$ t& L. @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* r$ z/ n% N. V/ a( E. l
+ V; p6 }, j: _6 d/ [# I' @
;;[
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]]* @$ _& E9 g' ^5 k- ^
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]; J$ e9 q: z) r( q! E
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
" }  O7 ~- c2 J+ C3 dneighbor-total
: z9 b. s4 U7 R$ ?! O;;
记录该turtle的邻居节点的数目
; W/ l3 D9 k! a/ p1 qtrade-time4 Q9 g3 j& @, h* m0 L7 n' M
;;
当前发生交易的turtle的交易时间
6 n  M/ C/ i$ o. \7 ]. T0 j0 M2 e/ Bappraise-give4 N( M' B+ R$ V( g4 c6 i7 Q/ Y0 G
;;
当前发生交易时给出的评价
% q: ^6 N$ Z) U3 F, {appraise-receive1 d. k$ q: h5 V7 M: q; M. P
;;
当前发生交易时收到的评价( T" y4 a3 T, u# @. c  e
appraise-time; c8 Q& V+ u& u5 d9 D
;;
当前发生交易时的评价时间
3 s! t0 G. d5 x% S2 Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) ~7 R( u4 e" q. ]9 @- Z- Btrade-times-total
- r8 `  r5 N+ @* g6 y- ~;;
与当前turtle的交易总次数
" B/ O( w: @/ |trade-money-total
/ C4 I: N& g. h4 A;;
与当前turtle的交易总金额1 i3 K' R  |) Z
local-reputation
0 c* |6 C2 v6 u5 y  ?global-reputation: B6 }5 L$ z/ t: a1 Y3 V+ J6 k
credibility3 m6 ~5 \* {) v$ w: ]5 s- B5 s
;;
评价可信度,每次交易后都需要更新
; A- F0 S5 [: W7 h0 ~6 c) rcredibility-all
: y  n. O& f% K$ ^9 L. }- p;;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
$ V3 y& H9 g, j3 s- ^1 g- n/ A" ]/ m% u8 d1 m3 y# |
;;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0.57 Z) @+ s+ S' t' e
credibility-one2 g" J" J8 l" b9 z/ p, l
;;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
  W! s0 u) J2 L: rglobal-proportion3 N4 a8 r3 y/ o6 o4 K: G5 r" A
customer& g7 Q* I: C7 ?! N6 F7 ]  Z( Q* a& p
customer-no
3 _9 y+ z: a; {' k! x- B: ltrust-ok1 `2 J8 ?/ L! a0 m# m
trade-record-one-len;;trade-record-one的长度1 `. c+ Q: b: l
]; C6 v# P8 ^* O7 ^" T

, ^, b0 G- h3 m. g* |" a% b4 g;;setup procedure$ j" R  |9 @8 F- n5 ?- J$ n
' @. z1 r/ Y2 F7 E, L
to setup9 u) J4 U& i' n
* L/ u$ w, S" O& @9 C
ca

7 d3 ]; X2 S2 W) w* V$ H5 w) M% N- t* R" C4 i
initialize-settings
/ {6 ?& d% t: \' U2 W" F/ L) o

* a% H3 T+ y0 u4 Rcrt people [setup-turtles]

$ X6 m' \# t- {( s: z, g+ h3 S
) Y' B1 O* T8 ?8 K: Z1 Hreset-timer

. m/ S" i( |; s" U$ H$ J( s3 `7 l3 c& G
poll-class

6 h* T* A2 r2 W  E. P$ N- b- }4 D% ^. Z: D
setup-plots
1 @% \, ~% n; {3 e7 i

! z/ O- U' s# {, K" Ydo-plots
! A2 w% g! D% ^: ]# N' n
end
; r# N* m. ~- M6 |6 }% ~  A& W8 K9 h2 \, k
to initialize-settings# {" u& k4 W& n9 [: K7 Z

6 k& S% ]1 `" Hset global-reputation-list []

0 Q9 m4 u7 @4 q5 X$ ?7 y8 r6 x, l9 m$ o0 W* r# d
set credibility-list n-values people [0.5]
/ L) i8 N' ^& p$ K, B
# |- H3 \8 |; @" R* h
set honest-service 0
4 o$ t7 M* \, c4 S1 {& f5 W5 K

$ ?" ?$ j- m& T& A, rset unhonest-service 0
: g5 d0 V( ?! M# c! I, E' ?
5 P' X, \4 O1 {" h5 s2 o& D" h
set oscillation 0

& ~* S6 N/ G  _4 B
- q( u, ^7 M4 H& Tset rand-dynamic 0

1 h( j+ v  D; @* s# ~end
! f% Y7 m0 l. z1 F2 b
9 x, U: ~' r; E7 W5 w' }to setup-turtles
0 Q0 }  W, r. \" ^( _( N' Yset shape "person"# w1 W$ C5 `% F
setxy random-xcor random-ycor
; C* o# u9 K* L8 a' Cset trade-record-one []
9 W: P5 [8 }8 `% x) i* L

1 y0 N7 E8 y" ?3 V9 Fset trade-record-all n-values people [(list (? + 1) 0 0)] 0 @7 ?2 j6 f; q0 W2 a$ A

, S, f# S5 n, {$ z! F. \set trade-record-current []( @$ Y8 ]: x6 d8 O
set credibility-receive []
0 Z- b; v. T6 E+ wset local-reputation 0.5
8 {4 |7 q( D9 I  l$ e- @set neighbor-total 0
, Q. S9 M0 r8 _! P5 Jset trade-times-total 0" ~7 h3 z2 N( Z# @/ r: s
set trade-money-total 06 U2 Z- r1 K9 O5 f( b8 H* V7 g# I
set customer nobody
; S8 N: \* N. ^( o1 n- Vset credibility-all n-values people [creat-credibility]
5 ^" S! |8 m, b% n1 Cset credibility n-values people [-1]: Y1 X9 h) G* N  Y( ~: \* f$ J
get-color+ U$ h# L$ g9 c; p7 [

7 T- c* q0 }# j3 Kend
1 a+ K  g. x+ X0 N) D
2 E% I5 ]5 A7 {5 ^2 B0 K8 wto-report creat-credibility! ~( `' E1 B, \: r" C+ B7 h! n
report n-values people [0.5]
$ B1 y- @. A$ @" l) iend! F5 H: r5 c7 F1 p& c( t
# S, G. [) P5 Y0 q
to setup-plots
, K0 V! h+ }/ j+ e8 F; `
3 ?% ~+ `: l6 J% uset xmax 30

' t4 q7 K0 F8 h! H3 H- e' p  ]4 U0 o  e. v
set ymax 1.0

9 g% a' [3 x6 ~) Q1 D9 g; j! H6 k
. C# e2 H9 p# u9 Y. c9 ~$ Q! _clear-all-plots
4 m: A6 r' ?8 q/ o
, D0 v( R! E# A
setup-plot1
% o4 y8 Q/ }: x  N, B
2 s7 M  ?7 ~+ |; V# ?
setup-plot2
# D# }4 {& s. Q2 o+ w5 B* F
0 z# s1 D5 y$ ^* r9 i' }
setup-plot3
  A- j" A- M' W" c
end# i: d. ?, E9 \0 B! T

0 P4 Y. a: R( n& _2 p( M+ C  R;;run time procedures& e9 P2 X  K% t% Q
# {, b' c4 j3 y/ L& e+ w) F$ @
to go
) @' z) v$ \5 {# H+ Z8 a" z7 _/ ^9 O0 e  a& Z, r4 V. ^9 F8 t
ask turtles [do-business]
$ t/ ]' L$ s  n& t" Q
end3 V1 a  C' s  {9 d4 M" ~

/ o: n- C, I& e7 u6 Kto do-business 7 Y7 _6 Z6 j- c3 m9 g' u) Y8 T

' {+ [' `, A( G* x# H4 e: D* n
) A2 S  B9 P& A* W  m" S# }rt random 360

' T, i5 q0 U9 T* [4 d. U% T9 C4 w  j3 ?; u. }+ n- g; h
fd 1

9 ]' f4 Z) R2 G' q0 k6 j9 N3 w/ l& S) C4 h4 m% j) H
ifelse(other turtles-here != nobody)[
. H0 W& \9 F( i( L0 t; ^

$ D9 ~/ o) ^, Rset customer one-of other turtles-here
) ~3 i- W2 T+ g0 ^5 T6 ^+ K

8 Z, j# ^5 v6 j9 {0 _2 h;; set [customer] of customer myself
! y0 W: j3 A( U& Z1 J; F4 K! l& q
; j9 J# J: h1 R5 D: x4 F
set [trade-record-one] of self item (([who] of customer) - 1)! E* K1 I( ?9 O& |. h
[trade-record-all]of self. Q. N  I0 c* |9 M; `, n) A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! X- K$ k/ O$ `: d# [4 r/ N

1 I$ X) U+ Q# O+ y. B" M' O# hset [trade-record-one] of customer item (([who] of self) - 1)
4 r$ J& Q0 ^$ b! M" R[trade-record-all]of customer
, _/ ]* a  J% E8 L+ u0 V5 w% U4 o
0 |3 e+ B. S+ r# a& G3 z
set [trade-record-one-len] of self length [trade-record-one] of self

6 @! d+ u1 R3 g* Q, ?7 |* S7 O- y% b4 w& p
set trade-record-current( list (timer) (random money-upper-limit))
0 S# |; j% m  m4 E% B( Y8 `

' n8 K. C! e- |" U6 lask self [do-trust]
- X/ W0 _0 V! x# x& M- l;;
先求ij的信任度
2 [$ }  [% Y  v3 n9 ^! r  ?/ X9 f) w. v; ?& W
if ([trust-ok] of self)' @! j/ Y9 f+ r' Q8 P3 J8 k  E
;;
根据ij的信任度来决定是否与j进行交易[. c* O7 K- V, }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; x  n+ [' U  f, k1 K* Q9 R/ b3 J
[

. `* Q3 b- L9 X( L( O) Y$ y8 d5 w
- G9 `* }/ ~3 ]1 Z$ z! J3 tdo-trade
3 S; G, P; U+ m+ ]- I

1 A! P, c) ^, h9 n- Wupdate-credibility-ijl
  y6 ~5 R% Y- g4 G. z9 f: U  W
2 [  J# c0 q* u) o" X- }3 G
update-credibility-list
9 m3 T  t! H: m
! n7 I# M( F- H2 Q$ x

% W* u! Q+ o; mupdate-global-reputation-list

( q% j# i& V" K3 ~/ t$ O% u$ _+ [, k) V4 z# ?( t2 [' |# s
poll-class
6 o# A" [+ W, `
& |3 x: O- t7 O8 i8 ?
get-color
* ^: ~0 [8 ^" [9 ~8 T9 U
7 i& \, K$ o3 k" d
]]0 k4 ], o$ _5 @2 x4 l% n

( p& Z, p  N' \, [- n;;
如果所得的信任度满足条件,则进行交易3 F, G' h% v5 b! T1 e

# l# I5 q4 V5 y# R2 E( |0 y[
% r7 T* |4 R9 l" S0 I' ~* t6 t
7 ?7 M! Z1 S+ H, ]. [1 ^  w
rt random 360

1 ]" ]# R4 v/ P* f1 W2 L
7 g- g' d& o  b, a1 l9 f+ b( Pfd 1
( v- N8 ]& G2 N& Y- X; q

5 y, V5 ^# P/ A9 I4 n1 I]
+ B9 ^% O! n2 a2 y2 Y% X
- a) X5 Z0 T9 F. R+ |
end

1 }  J2 Z, K. `6 ~8 _) z+ v1 r2 m! ~  m8 n/ y# q
to do-trust
. L. F( t- l4 b9 g# f  ~set trust-ok False+ q" y" Q: U# Z" r3 r- y7 e
9 `* X0 e4 [0 R* G

5 {$ e5 Q1 |, J- S, l7 ^+ k0 Jlet max-trade-times 04 G. G8 ]) J- Q+ d6 J; v) r7 R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- j# h0 H" ?9 Tlet max-trade-money 0
. J, \+ R1 O% lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 ]* N" `# |* W: x$ |let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 Z. l9 U! `( V
( K  D: N) ^# k9 B4 y. C) U) e

( N9 w1 }+ @+ Y5 B  Qget-global-proportion
! R( }' C. g1 ]let trust-value
* D2 R$ e+ `' h0 v' P' h' clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ r4 s) ]5 d) a& w1 E9 v* F
if(trust-value > trade-trust-value)6 X5 F! h" q- ^% D; M
[set trust-ok true]
! V) @& }% o2 H6 d6 cend3 Q$ t; M& |: d! W

* m, p) N. R( t8 M- _+ M' ito get-global-proportion- i# u! D; S8 _5 Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; w) O& {$ c& _! m' I3 m- p[set global-proportion 0]
5 W$ f0 g" v  E, R( t; }) r1 [5 d  A[let i 05 c8 [: f5 s8 _3 h: A+ k
let sum-money 0
; F: M1 D7 L) d) ]  ^. c8 W4 Uwhile[ i < people]. U* v7 X$ k: k5 I8 E
[
1 G- D, D+ W6 Cif( length (item i$ Y8 J8 T& E* P  _" X% S
[trade-record-all] of customer) > 3 )

: D' s; r2 a, Q: M  Y[
$ _( T! c7 Q# H+ u! _" F/ d7 sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 V5 o) g3 u3 @  e- g]3 O4 v  v1 J; c9 y9 O7 A+ x8 {
]
" V1 ?* y0 T8 |4 E: b. Y" ulet j 0
4 G: `0 e+ @  z' b6 O. v6 c  |2 wlet note 0, W2 O: x" d2 \# }4 E9 L. a
while[ j < people]1 i) X3 h. `, v( s
[+ |2 ]  ^) v: T. Y
if( length (item i
7 y7 k# X; y  V9 i) i0 h[trade-record-all] of customer) > 3 )
+ [% i7 w! c9 k- h; k9 }
[
5 n: y3 X& Y8 A% B; g# D. f8 C& h0 cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# P- Z, Z# c) W) h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# L, ]# l% ]; O$ _$ O/ B, |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, j0 x6 ^, P3 d]6 P+ S3 r7 \, N4 ^9 @
]1 W, _6 u, h; f  e, g
set global-proportion note
# \. [' h/ }% T6 Q# X6 i# V! j]
+ @% f! K2 a- u" |  wend( P0 O+ \) f5 a4 ^5 V

7 e, o6 g3 B# L/ ~3 S! |9 D; H6 I6 gto do-trade. p- Z1 ^# N4 \) K. Y/ A, W
;;
这个过程实际上是给双方作出评价的过程3 X3 Z, G  c" r/ f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; G, }& f$ s! O2 A% M( s5 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# O+ p- i/ J' x
set trade-record-current lput(timer) trade-record-current" b' h2 d, q. d2 ^
;;
评价时间1 D, O; v/ s0 Z7 Y' @# ^
ask myself [; M3 n$ V. s6 J* P! [! g. Q  M
update-local-reputation
- d8 m) x4 }7 w  M9 k1 _( G$ q  zset trade-record-current lput([local-reputation] of myself) trade-record-current
4 `6 h/ ^' ~9 Q* H]( y9 l! P! ^3 g7 F  P$ k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- R+ e. T1 d( V( u
;;
将此次交易的记录加入到trade-record-one
- g/ s: I4 m6 `' T: l/ R7 nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# }: g9 N& S" x2 k  a/ [let note (item 2 trade-record-current )5 Z  b) U, [# W; n
set trade-record-current
, a) P+ h% o, c# z5 c(replace-item 2 trade-record-current (item 3 trade-record-current))

( x8 V5 t5 E) k9 g3 J/ X4 `5 U+ Gset trade-record-current1 E- I2 L. {  ~( ?" `
(replace-item 3 trade-record-current note)
, X) ~  l' K4 N5 s0 i+ S/ h, d0 {  g* B8 a5 Q2 u: ~
- |7 i2 t2 f- |' M
ask customer [$ O( S# s8 H1 t0 h
update-local-reputation# c. W1 {$ G3 N0 u/ v
set trade-record-current
0 H0 u3 Y+ |# ^3 g4 T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ Q2 U; m8 I- I' s0 k3 _+ _]
3 {& P$ ^) ~9 n, Z- {% Z  `# v5 @: H; k/ n! e: f
1 K; b' N& P+ U2 N9 M7 D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  C( R" u1 q! X: s7 U

5 w, ^; ^2 ?* Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ j1 @4 h( ~$ P: N/ U! d! C;;
将此次交易的记录加入到customertrade-record-all5 w8 m, q+ ~! \
end+ D) s% Z2 Q% w6 J" N
% G2 ^+ @# a' M0 W" C  K
to update-local-reputation* ^% F; u7 s) M
set [trade-record-one-len] of myself length [trade-record-one] of myself
" x1 w+ D6 j& g. i! P
" t& v; E8 |* ~- z4 ]
) x6 ^* o" \! U8 t. R: z( h! n6 C- y$ v;;if [trade-record-one-len] of myself > 3

8 y& e) J& x" |# ^+ T1 u7 X: B8 |" m* wupdate-neighbor-total
8 {. t6 T! l* N+ h9 d8 O' L;;
更新邻居节点的数目,在此进行
6 a5 i/ T  x+ i3 m3 A% F4 c1 d* S0 Vlet i 3' t0 s; C( y7 m$ U- @$ w
let sum-time 01 z5 [6 `8 J2 a+ d" p! e
while[i < [trade-record-one-len] of myself]
" z; Q  f. s9 [" [, p+ P[" a9 q- W& I& `- m' \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 y* ^4 s6 v1 |  d1 A5 F
set i
$ y9 f) i% N4 e/ V" c7 }+ |5 m$ T( i + 1)
$ d6 S5 t* g8 h4 D. u3 r
]
% L- y, h+ ~! Glet j 3
4 j6 H3 o, E2 f8 Rlet sum-money 0; \; f, O# s1 [, a1 S5 ~4 |0 p
while[j < [trade-record-one-len] of myself]- j3 ~$ e, w. @  p# X! U
[2 q! O5 z" P6 ]  C% m
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)# ]$ O  H4 ?& \+ k$ O/ W
set j2 w! t- v. p6 x
( j + 1)

4 ?6 C+ I/ F' k0 [1 p8 o]9 r  K) p7 i# C7 i, O
let k 3
4 g% |  Y8 |0 ?8 h8 ^let power 0- I) ~4 T& {1 b
let local 0# h: q1 g6 q+ Q3 B2 [, y0 c4 I4 R
while [k <[trade-record-one-len] of myself]" x2 i  @2 T4 i1 j, _
[
( Y0 y: }, w! Y: K. P3 Jset 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) 8 @7 n4 U9 s) r6 V' k6 n9 b
set k (k + 1)6 _  G- k# I& k* ]
]1 W+ F  Y" U/ E  S% Q! C0 E
set [local-reputation] of myself (local)
8 X# k. `0 i% d  b' p# o( ~' s8 k2 wend0 m* k1 U  g% @, A* T3 P* ?
# I" f# A2 Q. [. A: C
to update-neighbor-total
8 K) M: w9 l2 t  t, Y$ J' g) j; p* Y- \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 o' P( C7 d2 v% }+ }* s6 J$ S$ X
, j: F- X5 ?/ C4 W
; [4 G; I( m, [. n
end
0 E2 s6 P1 B$ \3 k: ~; q3 R2 n! V6 Q- W! i2 a2 c
to update-credibility-ijl
& C5 j/ l' B6 i5 n
( z* y! C( ^3 }) M# D5 W;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。& f9 D5 A( R' D' H1 ?% }, S# A
let l 0
7 n! v* h: X! pwhile[ l < people ]% q/ B+ s4 G7 s- b
;;
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
' s, h; o' E- @0 t# h" g% s[
! H) @+ L& Q. f1 z) j/ c& S3 Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer), J7 s- h2 x+ q
if (trade-record-one-j-l-len > 3)
2 T+ |1 \+ B4 g- h[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* j  ]$ P8 N7 F
let i 3
2 a+ [" l+ P) V( ^+ hlet sum-time 0
9 ]) w) K( K" a; i& q( G. j: K5 ?while[i < trade-record-one-len]
# w, e0 G3 ]0 D% X[) c6 j9 Q0 H* j: A& r3 r8 A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 f! p$ j$ e- D' u) o
set i4 y( p' {# L0 K0 f/ d
( i + 1)
" \5 e; w+ X$ f7 I3 L3 ^* }
]
3 [$ U: r8 R* t+ }let credibility-i-j-l 01 N, l# s- D) ?' K/ _
;;i
评价(jjl的评价): u4 E9 I; R- q2 E
let j 37 W0 @8 J! ?7 s$ _
let k 4
6 h9 Q* e9 H* n3 S1 q6 qwhile[j < trade-record-one-len]/ Y/ Q* `# d! x  E2 i
[
+ B2 k  B* Y. I/ e( d: w, iwhile [((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, P  L, S' a2 n2 K- _  z: }: 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)3 v1 P; T( `. m! Y, M! c: h
set j/ D& n2 `* x0 D4 e# r3 m, x
( j + 1)
+ r! A' z* F. \7 G! a( Q( s
]
: l' k3 E  w4 ?& cset [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 ))
1 N: [. v( v+ O! B7 P; h8 c5 t
* H1 j8 Z: K7 `/ H  T' e/ v$ ]5 y

! V% F7 Z% O' f. Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ S! K, t, Q: J8 A' D+ @
;;
及时更新il的评价质量的评价5 H' L$ Q, s6 `0 t2 @
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 t4 _/ X  O$ ^
set l (l + 1)( u) |) ^1 r" E6 _. K4 O
]
8 o0 V  p) Z8 i% q$ Yend( P3 |" S9 X/ ]; p# m3 }
8 M" ^) j8 N  w0 z$ p: K4 K* v7 m/ ^
to update-credibility-list9 Q) a" `. {/ }8 \* D+ O7 P+ M
let i 0
7 [$ G1 F& _& j( M) ~. _) d" Pwhile[i < people]
4 j1 n5 `# f! p# X4 o: s[/ t! ^3 ]: Y3 ?+ x: h, c4 F, E( O
let j 0
/ t2 ?) c7 s7 y, ^. }0 O4 Jlet note 0% h  h  Z2 f) S: u' u$ d
let k 0
: k& E- f1 m0 |- ~1 g;;
计作出过评价的邻居节点的数目
$ H& y: u* m5 U4 x* p- swhile[j < people]2 A+ R% {7 k& n+ w" t
[- I) z. b- D: B& }: }
if (item j( [credibility] of turtle (i + 1)) != -1)
3 b& k- A( \% G$ O( ?* i;;
判断是否给本turtle的评价质量做出过评价的节点
9 C0 H" {0 x3 _. f& }. I[set note (note + item j ([credibility]of turtle (i + 1))): q2 S  Y( {& Y# S; i% T
;;*(exp (-(people - 2)))/(people - 2))]
/ R0 `: b) _7 P: i) z3 q+ l) }
set k (k + 1)
5 C; w2 N0 T0 }! u8 _]( X  k0 D4 E: {! [6 e
set j (j + 1)2 e, Q0 p# ]% G7 A0 h
]+ a  t7 x( d6 T5 u
set note (note *(exp (- (1 / k)))/ k)5 k: D& a% D) v. ?, f3 d, c1 X
set credibility-list (replace-item i credibility-list note)2 w5 o3 m, E& U
set i (i + 1)# K4 `2 {: e5 Y8 g0 V2 t
]
- [0 r: y" Z: n; y# [# O" lend
2 ^; Q; q* W. i9 |; m7 b
& Y9 b+ I6 h  v: Y' @/ vto update-global-reputation-list
2 I" }* T1 P$ L# X/ A( ~let j 0
. I% X0 }2 I8 B1 owhile[j < people]1 [  S' p$ x5 c% a( H+ F
[. a1 K* J1 `% W. v+ ~* K4 \
let new 0& }3 X, M8 }2 O- r
;;
暂存新的一个全局声誉
5 I+ k8 X2 I2 Q& B& t6 {0 dlet i 0- Z' ?5 r" t; u, O8 ~
let sum-money 0
4 ~) n' s5 |$ V& P2 F: ulet credibility-money 0$ k2 V+ w. a6 D7 D
while [i < people]$ F7 q$ `+ O6 J$ w) |. B, ?! x
[
3 I9 q% z; z& yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* I8 Q) p7 ]* u. Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): Y) h  B2 R& W% j
set i (i + 1)* N7 `; n( X% m) W0 T3 {- W
]
1 P. H: N- e! t, Z; v( Vlet k 0
& G5 k  U; W: ?$ i- ^let new1 0/ s0 O0 N( ?% h1 s3 V- e7 s4 R* p
while [k < people]" L% v- L- k( z4 O* E. l$ Y
[
& s; f8 N/ e1 bset 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)
0 g  W9 O  V% m, x- T2 J  K* Fset k (k + 1)
# L0 y# G0 k4 D# R) h+ M! y$ v6 v]& I' C$ ~6 f. ~) I/ V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 t- S7 T5 S+ p2 I! b4 G0 sset global-reputation-list (replace-item j global-reputation-list new)6 D: K- F5 V1 S; V8 u/ ]
set j (j + 1)% \, Y3 ?. j6 ^' _7 x* H5 |/ j9 z& W
]' |" s( X# @5 A: b! ^
end' s6 X  f3 w7 [4 k, i5 q4 [2 c

& L) H- _- P( D3 n! p/ E& o/ ^1 ?
) p4 Z9 x7 G) N# K; d
to get-color
1 m6 C6 X& }- |# |" R
$ D3 \' p, e7 _; b0 Yset color blue

, ~2 V% T& u+ z, B3 y/ U5 z* tend
9 g; }+ K1 Y) l2 Z8 L6 `2 c; D- c# j/ u7 |, y  R0 E
to poll-class! d+ X5 _$ {& W# ]* j; h1 @
end
2 I* \. b5 S* o2 V8 u5 K/ n2 h: x5 g+ u
to setup-plot1
3 n& m  h( i  s' \9 |( [' I$ r1 ^
5 U1 [, x* ^4 }/ ]& S) pset-current-plot "Trends-of-Local-reputation"
8 [) ~* t2 P' N
+ V9 ^7 p, ~! n, E! X
set-plot-x-range 0 xmax
" s/ U7 }7 r0 H9 |

8 A6 D0 C$ R# g! P) f& ^set-plot-y-range 0.0 ymax

) H1 @2 x; H- n5 }end
" j, @/ t' Q0 C* `. P* r
3 k0 G1 y& P8 B6 \" C  j% gto setup-plot2& E9 n* p6 J# Y* F* `. R) e! Y/ `
' J, T4 o4 o. q" t' k
set-current-plot "Trends-of-global-reputation"

2 b( y8 l3 V8 z; R1 w0 {/ r: L/ v3 q) t. r+ m/ Q7 Q
set-plot-x-range 0 xmax

" a& ^+ C$ A" J8 x# N' y4 t2 W( f  u8 f! I: T1 n/ S, H& F
set-plot-y-range 0.0 ymax

9 L/ e, t! p# ]6 m5 qend9 V0 i% e& f; O8 i6 I0 c

8 U6 v  r" p# S9 F: C) P8 wto setup-plot3& ]+ B6 `( W/ g/ F+ x! ?
: d' x; j( u% A- A1 \$ e0 ], j
set-current-plot "Trends-of-credibility"
5 z6 A; ^9 R( Z0 {) J

6 W6 }3 R. m; p; V6 x  t, M) Cset-plot-x-range 0 xmax

; I- J' o1 b8 L# ?$ _# b$ S8 m
* o9 ?( P: B  r& D- N; \set-plot-y-range 0.0 ymax
, n* o  x7 S' o" R$ ~5 q# N
end! c0 N6 P6 {5 ?1 l7 V

8 w/ c& Q0 [6 b# i8 }# G% K+ j# sto do-plots$ a4 m+ A; `6 u7 s
set-current-plot "Trends-of-Local-reputation"3 f  N; g) N3 D5 \% P9 D& d# {0 }
set-current-plot-pen "Honest service"
0 z: H$ [9 {6 h: ]end
# R$ |3 c& [& G& I! ]
" b' x0 o6 j) m2 u1 R; `[ 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.# t8 N- c/ {  ~
, R9 v: w7 U1 l7 \
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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