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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:
* V/ X9 |- e5 _' ~5 Gto do-business : o  A& D* o% n7 ]
rt random 3609 R: X4 s' E7 l% H: ?% @$ h8 r/ o0 t
fd 1
9 W6 L2 Y% p/ S ifelse(other turtles-here != nobody)[
+ ^) H! u6 `3 X! ]2 f5 z   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.
# T" O3 U. n5 u8 r- l+ d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 o) G7 r! y4 ?! \! x
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 l6 p" F  U8 X3 e   set [trade-record-one-len] of self length [trade-record-one] of self
8 |; {/ p5 w& G& e, V   set trade-record-current( list (timer) (random money-upper-limit))& A" [$ Q2 k5 D! P' B7 g
  |8 N6 `. g3 Z; V' K/ A7 |
问题的提示如下:
. i1 i' q! y. _2 Z/ J! a1 h; ~6 ^2 n/ U9 m) k# o- t  K
error while turtle 50 running OF in procedure DO-BUSINESS
1 w: o4 @* ~; `9 k1 d) l; y8 S5 _  called by procedure GO4 X* H! @' k9 [" D. z( M( w6 J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 S. Q* t2 P. R/ Q4 ^2 h, n, \$ a  {
(halted running of go)
4 c/ @5 @4 P4 i7 m: m4 U
  m2 }4 I/ m5 l8 {5 F1 _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 P! A4 q* A( n. l, r) A- D" t2 Y2 ]
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
) H  }( A; r" }  Mglobals[) s$ T" f+ x; H, J
xmax. I8 q% I2 i3 }$ R
ymax; l) b  D" ~* |
global-reputation-list
3 R, J% D) I& A0 a1 c( J, d) R( z/ p; A# L+ Z
;;
每一个turtle的全局声誉都存在此LIST
* p# \4 Q- h. l* @credibility-list
  ~6 l3 H7 I3 `) N;;
每一个turtle的评价可信度7 D' T; M4 u8 U0 l: v
honest-service' Z( A8 h. U' ~0 X8 Y( G
unhonest-service
0 ]! W0 ?% e% O: }oscillation( k" R6 _. F- q. z2 X# x; k
rand-dynamic/ w& V2 [  C! F- P; Q3 [
], o) `/ n* ^6 l1 h) O

* R5 W0 |4 |! jturtles-own[3 T: x3 t( C. x1 c
trade-record-all2 f* k3 f* ^. e2 t# L
;;a list of lists,
trade-record-one组成+ J6 @+ V, E% W3 s" u
trade-record-one
! q% N7 J' h1 Z. y& H3 i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ D1 P/ z) e( s( I( ?. t+ g
+ Z# a" ?) T; w6 [
;;[
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]]+ X# J: L3 g2 k0 r' s& ~
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]1 }& S$ K: J7 J' }$ a
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
* |1 {! \( Y; n% P! [0 Wneighbor-total7 L8 @  e1 P% ]) u
;;
记录该turtle的邻居节点的数目7 ]9 A9 s( E  _- H6 {  _
trade-time2 {) l3 n. ]  d4 D
;;
当前发生交易的turtle的交易时间
# _- N) _6 @  B  i5 }! s/ A- O/ \appraise-give, ^& T2 O7 D* w- G
;;
当前发生交易时给出的评价! Q1 [* k% M7 q  `8 b% Z4 h
appraise-receive8 T$ R, n& {5 U- P
;;
当前发生交易时收到的评价* {3 h. T: ~9 e; r  O& {+ F
appraise-time
6 g. f0 j1 W  q" Y+ k1 f  E;;
当前发生交易时的评价时间2 B- Y: z* F; g: ]2 n4 g$ M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ @& @& N; e" ?( ^trade-times-total" i( r9 C9 a- h# Q0 D3 A5 B: U
;;
与当前turtle的交易总次数
7 T' @" X! A* n% S) ?! Ttrade-money-total/ O, ~9 j. R4 G+ i1 F; ~, c
;;
与当前turtle的交易总金额
' T: A2 Q( d8 s/ v/ T" t1 Dlocal-reputation
6 j+ C3 ]* [  E- W& j" s  Q  }; aglobal-reputation
! n2 n% o$ N. A5 {. m4 ?7 ucredibility
! t9 H- u: W) {4 J- l7 H! @/ _;;
评价可信度,每次交易后都需要更新1 u& c, m3 a# C! e6 _2 ]
credibility-all
% U2 O4 Q% a# ?: P5 H;;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
5 ~5 b  e/ u) J# X' t0 A) J
/ e8 ^# A; |2 c, ]6 ?  A;;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
9 X7 D3 N9 x. ccredibility-one
# N( A+ Y. i" f3 a8 h7 Y* d;;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
1 }0 ^% Y9 m; M. H. _9 K+ A$ z. f1 Aglobal-proportion
0 w( M: [+ Q! Q6 q0 ]& ^" wcustomer
" b1 {( [3 I5 @5 V' S9 [" W1 kcustomer-no
. I; D" [" c# a3 X, b7 xtrust-ok
* g. l/ Q5 ^/ [1 {1 o! y# S$ N7 atrade-record-one-len;;trade-record-one的长度
# C9 |7 D, M7 K. w- f3 s. S]% ]2 _3 T( D6 J4 U

$ a+ A1 @3 s& C8 U, M5 Z4 };;setup procedure
) x# u% o9 I3 T: k3 B2 j2 u; ?- v4 c
- }" `9 O5 t) e) T6 I9 I7 fto setup/ L( {' V$ G/ @3 n& t6 I5 ?. G

1 ~8 D4 n' S* {: ]# S2 eca
& T/ N, V5 ~$ |) u# L4 f
9 z0 q6 X4 u* E
initialize-settings
# b7 T! I  \1 O' E0 b/ R

: c' [1 N0 P: ]3 Q7 ]1 pcrt people [setup-turtles]
3 ~! R( A2 o- c1 \
& s' F* _& f! ^+ k7 D4 q
reset-timer
) ~: h, C1 p- K* X3 m  h

$ a' y  j& C: a- ]poll-class
( V. N# ~( a; M
% `6 m' T  A. r2 ^3 @
setup-plots
0 c6 N; q. R0 [5 j1 O& w7 c/ f
0 x' T7 f3 \) s% n  p7 e0 c
do-plots

( e! U! k7 I/ y1 |1 {7 Bend5 I4 `, [5 W* Y5 G

1 M) W$ M/ k! K: t0 g6 yto initialize-settings& h. l5 x( D% C' ?$ G+ [9 l

! L' G! p/ j% c5 tset global-reputation-list []
; |4 p* Q' a& i  U, H) \) `- A

% Q. ~% {! }( J3 v. j2 h. eset credibility-list n-values people [0.5]

. m9 i# R& s7 D) R8 w- ^5 a3 Y* V5 k7 E) S( D
set honest-service 0
. h) ^. `5 s3 J; @% q2 T- U
1 K+ H# |, Y- V7 v- [- ], G" f
set unhonest-service 0
0 t' q; X  v6 e9 H

9 q: [2 P6 c- ?' w( qset oscillation 0
0 u( U2 E7 D) x
# p+ o9 K6 ~8 V' V: ]5 _; k8 I) [
set rand-dynamic 0

2 n0 h( Q5 z8 z5 f: y) Tend6 _2 b- ?4 l! l7 W' o9 _

1 W( o8 @9 f$ d8 b6 h$ lto setup-turtles
2 H# T: m5 |: y& Q8 nset shape "person"" C* q& A: F% ]9 K/ H& i
setxy random-xcor random-ycor, J7 F  _; X8 x) t
set trade-record-one []
# d6 N: J7 c- V5 x9 V: ~

& S& H3 {' {4 ~8 rset trade-record-all n-values people [(list (? + 1) 0 0)] $ S4 J  A) k8 u  O* e* _

% i, S; [% V- F6 @set trade-record-current []
) I; \/ D% i% s/ b  |  B: i: u3 Zset credibility-receive []
/ Q: t  }* ?& A. o* x' n$ u* @set local-reputation 0.5/ {  O; o7 Y1 z8 K1 ^9 z' W
set neighbor-total 0
5 W9 i2 J+ ]7 ]" l. Z( Pset trade-times-total 08 m4 c( b. ^( O
set trade-money-total 09 z! l* k0 [+ ~4 j* `& N" j' [5 q
set customer nobody" V# F" f6 k2 W: Z0 p  y! R
set credibility-all n-values people [creat-credibility]
5 L& E! q1 K: [1 B; n# qset credibility n-values people [-1]
0 h% _& H0 c: tget-color
. `4 y( P% @( E5 D( g

5 p3 v5 }7 E+ T/ T/ zend' N+ D- e! P0 `$ C3 a' f

$ @5 X) M8 M) O! l2 y+ i8 ?to-report creat-credibility; D- a  }, g& t
report n-values people [0.5]" \) c% i/ ?" ~' G: W5 G
end
) A+ x9 ?3 A$ E3 }
% z- Z% a6 a3 d5 P, Eto setup-plots4 u! v1 i9 l1 H& W4 y
% L: s/ D* h* Y6 I5 e
set xmax 30

  U+ L$ i7 Q- t+ S
9 g2 E: S* r+ a' W8 Y) Z  qset ymax 1.0

/ v" q8 ?" u/ c  `+ E$ C* s9 [+ {, ]& o* o" O8 {. F% t( C4 k
clear-all-plots

% h; Z5 v% H5 b& j7 U0 q  g" `- t' {2 }5 E" M' d5 \
setup-plot1

) L$ H. d) K, F- J- ]; i
- H2 B' M- Z2 z# R' B% ?setup-plot2
* C* j) o, R7 `% E+ [3 E6 i( P/ L/ y
, p3 R* u1 @3 J) k: q" L
setup-plot3

/ ~" ~+ M/ A" O9 W( cend
6 d) k+ J! c3 C! d& h0 J4 [3 \# y- U; j  |3 @$ n3 }# D& S
;;run time procedures" l2 |, ^* [- m3 m+ k% T4 J0 Q
- F; I0 E% O8 ~' s) y
to go: `$ ^+ \1 X+ r# j0 A  C" l

4 x, V( t0 `; T) Y+ g9 X$ _6 pask turtles [do-business]
( i+ J9 B, F" i/ t. t$ m0 n4 f
end
2 l. e! ], h. z% b
5 g, Q. ~6 T4 p, Wto do-business
2 T+ G; B0 V& ?2 s/ o
: d$ [3 q& x3 n
- {# p2 O. m' N( Y2 _
rt random 360

& ?- y" U, M0 I  X9 D, F% N6 H# h! {$ d: r+ c5 Z" Q* y* b
fd 1
, }" u. F  x8 Q# y' d/ m+ k$ u# c

6 G- M* ?- x: H2 J4 R5 sifelse(other turtles-here != nobody)[
' R( P! e7 }. |2 {" Z, ?
- y" C9 X' E# }
set customer one-of other turtles-here
* Q3 X6 W; }3 k0 o/ E: I

  I5 P/ @0 b) u! ^) N5 a6 s;; set [customer] of customer myself

$ G! C! S$ h% a8 F% z# ]- U6 X
$ D$ @5 t* c9 H$ f$ w' T5 i( Lset [trade-record-one] of self item (([who] of customer) - 1)' W9 I0 H  n' Q7 @3 ~: F
[trade-record-all]of self
& y0 Q- ?8 ~+ z# {6 x. }* o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 j$ E/ |& v3 n( X& j& x& {9 k5 H+ n& t! j( m6 c' s0 |
set [trade-record-one] of customer item (([who] of self) - 1), V- H4 X3 P! d  f& S* U  K" P
[trade-record-all]of customer

6 _1 _/ w! F2 ?( c2 M" i7 z0 A3 y  e# [
set [trade-record-one-len] of self length [trade-record-one] of self

6 D/ ~( a% b8 g( m* ]# z7 u0 M# ]' s$ P" }& |
set trade-record-current( list (timer) (random money-upper-limit))
/ N. h/ R8 B1 H# s5 f4 H
2 y2 C6 f$ T; k! ]; H  L8 P
ask self [do-trust]2 Z, n9 o* a/ ~8 ^9 x. o0 q9 Z
;;
先求ij的信任度7 y4 ^3 \8 I: e, N% n; U

" V' E3 L$ A5 t$ w4 W; i2 Xif ([trust-ok] of self)2 [9 ~) a2 G3 V8 D& C& k
;;
根据ij的信任度来决定是否与j进行交易[* e# \0 f8 H3 s) ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ T1 f5 p. ^* Q. N( G& b
7 |6 \1 d+ a. b. L* H3 `. }[

" [3 W( \* K% A' D4 j
* z  l" a1 s7 o# u1 x* ?do-trade

1 i$ {2 I$ T& N8 T4 {
: \$ R# y, h+ ]6 H* n  M0 @update-credibility-ijl

! H: w; z7 _0 G+ Z- o  W; d; v2 m
, H# n' D# ^- A7 k' }  r9 P6 R- Jupdate-credibility-list
2 ?3 U* |% Y2 M1 Z5 K, T- O
' j$ O2 {8 ]) M; _' Y
0 ~" `% X7 i+ U2 m3 `
update-global-reputation-list

% n  N+ n; L! j1 c  w) }3 F4 I+ X0 r8 R8 K) P
poll-class
& C4 X2 P  J) R9 s# d- C; b* V9 x
! i  V* V5 |+ S) k1 h# P
get-color

* i, ^. |& Q$ y0 ^: L
$ r3 H# b# L6 w' x]]% w( D" }: m  \- l

4 G5 U+ y# O5 d" d9 a4 |;;
如果所得的信任度满足条件,则进行交易6 O5 D! X2 H& N+ k

+ ]; O+ D+ P8 F' B4 b; k3 o) l[
, V7 D% \* `" W' m

# S- h5 ~  I* h. R/ l0 V8 ]rt random 360
; q: [& o# |5 g

0 d( F9 S& B. r7 Jfd 1

4 r8 M5 n8 {* u8 f% o% e0 `$ O' n& @! k0 ]0 M8 R' ]1 M
]

' y1 f% p$ y+ Q5 f8 S
& [7 m; ]( L- n7 }4 J/ k8 send

# s* Y$ V) j1 s  ]5 H7 `% U
' L4 n% g& b0 h- G& \/ J8 h) fto do-trust . M% `0 s  A; b1 {1 w
set trust-ok False
/ {6 `9 k# p9 ]/ s: s8 U2 X( L3 w1 q: l
/ m* j5 N5 M. R$ f5 @7 I
let max-trade-times 0$ r8 P% x2 D/ E3 @, c/ ]6 I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 h: y! E' T7 F4 A$ g5 \let max-trade-money 0: L1 ^' B1 e9 k' ?8 J. I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 W, P/ Q$ q% O' I& ]4 ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& O' z5 V: {5 x% ~$ U0 k- y0 o) E+ h1 B% Z% E; E' c( i2 ~, S

0 {: L! e& s5 m' y4 j2 lget-global-proportion+ c( s* t- C% D
let trust-value
5 ^. Q4 v' A1 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)

8 W* T& R' D8 I0 A  vif(trust-value > trade-trust-value)
2 z/ U! ]/ @# z[set trust-ok true]
' G& L. k3 y( B' M0 N4 s  _3 w( iend
. x9 q( q1 ?3 ^3 |$ w( k
5 j# o' t! P$ ^/ _; K! Uto get-global-proportion
2 ?- c  K8 }# M% o! Eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) ^1 g; L8 V' f5 O  E, Y- x[set global-proportion 0]6 K" ~6 w6 c7 S
[let i 0/ h; z- _# R, O% n' ]. D* o8 H
let sum-money 0
; }( k' A/ y* h6 F6 _- ~+ Uwhile[ i < people]
$ M9 \9 D+ P/ k& K4 w& N[5 ]( @" c1 W+ Q; N; i  S) ]) e
if( length (item i/ Z- W* F. C" P, C
[trade-record-all] of customer) > 3 )

' d* m' `% a4 ^. P8 ~) @[
3 v! `, n( u( o+ p& Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 Y% B4 B) [" l5 }]
- e+ q: \% p! p4 y& J]
( C  P" P$ i7 k3 A2 \+ z2 ~3 A" Dlet j 0
/ O* Z4 R2 b: L. @8 X0 Z4 [! nlet note 0
/ |( j4 s& ]% A6 R8 Vwhile[ j < people]
) z# v7 |& X& v+ ^4 j1 h0 n[* G# d: C1 s. L* B) e3 C
if( length (item i' a* {" J  J$ [  E! L
[trade-record-all] of customer) > 3 )

. |5 G4 A& {- p$ w* ^0 i[/ k# c" ~& i6 x0 {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 E8 @* t! T/ t2 k+ x! n  M  M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ Z0 Z' S, g5 H& [8 w8 R( L7 s4 p) Y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; X! `" o( ?+ c]4 t2 v- m  W9 B7 w% H- v: v
]
* X( a6 ?7 o9 `+ X  V1 I' Sset global-proportion note' P5 l5 C/ ?4 E- G! z
]. N5 `' y- p: {6 S
end+ s) M% j6 R& t  U! }
' b5 a: Q  l8 z1 t; w$ P0 l
to do-trade
% h( ]$ A/ R8 ~7 ?( f;;
这个过程实际上是给双方作出评价的过程& j. s7 }7 b* R, o8 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  D2 g2 u/ ?1 S, P% I3 u2 R* _5 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; v1 W% n, ]7 G6 w) n1 O
set trade-record-current lput(timer) trade-record-current
( ]+ k! _( J1 t7 v) ^1 X: G;;
评价时间
% z( m8 H- d+ ~ask myself [
% J/ {# E7 F! ~5 ]$ X8 w$ \( N; G* x, xupdate-local-reputation* I$ u( X1 W' g+ V
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 P7 w. \3 a% {4 F9 b0 A# N/ V]
# r4 R7 e  P' \4 xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 Y; V2 L2 W1 X) J9 ~2 I( M
;;
将此次交易的记录加入到trade-record-one% |5 D* O) x9 E5 C1 x; `6 c7 E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 A, E! x$ h, _/ a- v; m+ Z- Olet note (item 2 trade-record-current )8 \$ R$ r& D6 _- K7 p4 f8 B
set trade-record-current8 ^# M& s9 b3 @3 M, X' O4 e
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 X0 x( \4 P/ b. [set trade-record-current
. `; Q& z/ Y; |, \# q( y: L(replace-item 3 trade-record-current note), `$ G% F0 u1 Z& J7 C6 _

4 Z7 l  g, r7 i' E8 J, [

! @- b4 H, T1 H. {/ l* Task customer [  k) N/ P/ _8 L# H5 |
update-local-reputation
' I& h6 ]8 h% H4 h1 w3 ]" u# ]set trade-record-current. l: V1 s" F5 V' M. H: q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  o) K+ t/ G: X7 e/ k]
& ~' S5 n3 A  T- P. e3 x' k0 E5 F! E2 z: f$ H

+ E' r6 |4 C$ L3 k0 h* Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% Z3 K& O4 b9 W+ y! {8 E

, i5 q& g$ _& l( _+ B3 q" a( H" ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 G4 G5 X" G6 a6 n' F# \
;;
将此次交易的记录加入到customertrade-record-all" f9 O3 s) q4 c$ t( d1 N; S
end  Z5 v7 Q/ u5 k* P
5 x" Q  K, |0 \2 C
to update-local-reputation
! V' c! ^* A: lset [trade-record-one-len] of myself length [trade-record-one] of myself
' R$ k3 F$ D. ?% x* ~! k7 y, {8 ^( e: R! Q' v

  U# I  K# q- `& g3 Q4 e" T;;if [trade-record-one-len] of myself > 3
. L- |1 @% i, P+ a; g
update-neighbor-total9 \0 y. w4 P0 d& f  G
;;
更新邻居节点的数目,在此进行# V+ k& h( w. M" Q) G3 u% [5 H
let i 3: D! L7 J+ ^2 j' J6 N
let sum-time 0# x+ m1 s: n. g/ R" _
while[i < [trade-record-one-len] of myself]# i/ a. N' S* H4 s9 F* z# n
[
5 z# k  ]3 g1 B- F0 y# g$ Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( V* `$ J' y# n/ Q6 U. Cset i: K, Y2 B" B' x/ I
( i + 1)
; g8 `9 A: @6 r$ _
]
0 R6 d" n5 n8 o) K  E# R" Y+ {let j 34 [. Q9 L' I# O; Y
let sum-money 0
! d. p' {# U8 ~5 Xwhile[j < [trade-record-one-len] of myself]
4 O) W9 `, O/ C- U[
' o! C, r; k9 N& N" x+ Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)/ J  y* t% A) I  L- ^0 ?* H9 |
set j5 i. J- G. ~' ?# a  ~4 R2 P
( j + 1)

( G! z8 f4 o* Y4 O) L]
: J. z; r, c7 p7 u# flet k 3
, }, i3 U' I& ^9 o# Xlet power 0% f- ~0 @, G, u: M  G" O
let local 06 f) m  S$ _- l; c, s
while [k <[trade-record-one-len] of myself]
0 K. Q; Z+ J& H* w+ s( s; T[2 _" ?9 n) G: B% Y
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) % {+ @: M1 l3 k$ Z+ d% p3 r+ j
set k (k + 1)
1 I7 G. {- p4 K8 i7 Q- s* f]
6 Y0 H. y1 q, U3 A* N6 b! H8 Sset [local-reputation] of myself (local)' s) M& x  \0 B; S$ p3 g
end. t. R1 b( H* C' e3 _

+ B& o- `5 r, H/ i+ L& g* _7 T7 dto update-neighbor-total; S# k3 x+ w: l7 V
4 _' o$ D5 `; p" S" ?5 |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 a4 r- x  r( {) l' \+ E, q* Z

; `  U; s8 Y  P
! `( U- h9 |9 R7 ^# H# _
end" v1 R- q5 H' H+ a' S% [. s

& M- g5 d. J( P& t$ wto update-credibility-ijl
/ {5 f2 Z# d) b, y6 W+ }  C
: G7 U7 T9 p  U;;
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。
9 s8 s0 T6 y. a- ~8 Ylet l 0  I' G5 Q' F+ Y! x) u( Q. I" H
while[ l < people ]
9 z1 C6 o2 i) ?3 E;;
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
% f3 Z  D! M( \, W2 D9 ~: T8 w# M; X[. B/ x# c+ r. T. P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% }0 X, S/ {4 o' Z; R! {
if (trade-record-one-j-l-len > 3)
3 T; d3 O! O, ~[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- W* r/ y# P9 K" T4 N2 e
let i 3. ?6 [# |3 ^( ^3 |' Z
let sum-time 05 g6 F  g4 u7 c
while[i < trade-record-one-len]2 r% C$ M5 P" e
[
- g6 w! K* C" y; |1 Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ R7 Y* s( ~" R, ?' G
set i2 U  t6 ^/ N6 F. v3 Q3 w
( i + 1)

5 ]  R" a& d. n6 O]/ h7 l) u6 t6 K! G. ]) j& w
let credibility-i-j-l 0# U6 ~# l$ V3 N, T- }
;;i
评价(jjl的评价)
0 [) {, Z7 I/ k# Z6 O1 @let j 3
. @8 b9 d+ q( x& w, Ulet k 4
2 G+ A" @- Y/ l' K% b8 j% Cwhile[j < trade-record-one-len]& e% c' t& y1 }' \) y$ O0 C
[( k$ N5 [# K7 X+ Q
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
- R) \0 U6 x- `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), i* Z3 [- L4 K$ g4 M" r4 s5 Y
set j
- v8 B3 g* Z5 p0 }" E$ O: i2 S( j + 1)

  P9 M& e$ H) q* L3 z% M: Q]+ F6 ^! Y" Z3 l+ u4 y
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 ))) }/ E0 b- m1 ~% R
5 G2 G0 i1 Y% a" l( {

. S7 ~, q1 h$ s" T- J6 @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' U: y9 {! _( |* Y$ S9 v
;;
及时更新il的评价质量的评价" S4 v! U7 G. e4 E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" @5 D3 A) q: `  J( B; P  jset l (l + 1)  H$ r8 \) G* m1 i
]
/ d: |/ d3 V' D( `2 o# Gend0 S3 B1 v1 ?% Z; M% d( i
- u. @  Y7 N0 b9 z5 f/ C4 p$ L. a! r
to update-credibility-list3 u4 X! n$ ], E( d2 @6 O) s4 v0 \, M
let i 0
; w$ N; B  _: ywhile[i < people]# E' r, _. V0 b+ M; p# w, o$ r
[4 \0 ?2 Z- t  p3 ~/ e. ?7 d( T- x6 D
let j 0( I+ H" t% {) ]
let note 0
! X2 `% t# D$ I2 H8 O. ]( _let k 0/ G# t$ \9 S) D6 ]7 r1 J
;;
计作出过评价的邻居节点的数目) D+ F2 O* H8 e# c$ j
while[j < people]
# H' O8 M9 W! n1 G% P1 z[3 W6 D& v/ n/ a
if (item j( [credibility] of turtle (i + 1)) != -1)" }  e  j# d: L. p
;;
判断是否给本turtle的评价质量做出过评价的节点
5 w9 t. x$ L& l6 Z+ O  ~; y[set note (note + item j ([credibility]of turtle (i + 1)))$ A1 X3 C. m5 Y& l$ I8 P
;;*(exp (-(people - 2)))/(people - 2))]

' U# w& X7 ], O( B) w5 z  Pset k (k + 1)
8 k: p  K1 }4 ^/ T/ P# s" l* `5 L# j]6 K  K; A! x' w' F- H
set j (j + 1)7 P8 C) k7 ]2 v& Z2 i& F; X
]
4 A' c' _( k; u5 w1 ?3 v- G  S$ tset note (note *(exp (- (1 / k)))/ k)! G8 s1 k, ]* U/ y" z
set credibility-list (replace-item i credibility-list note)
; p0 `) E0 E' R2 oset i (i + 1)0 U, K  I& t3 P4 K# f  y8 G
]) Z, V$ r: N3 w4 ~
end0 [" X* f: @9 N/ ~6 H6 v

0 m, g6 n7 }, F  ~' Xto update-global-reputation-list. k' [3 b# n0 ?5 e: q  o) Z4 K$ }; t
let j 0. L# B; R3 i, a0 b2 l
while[j < people]6 ?9 l/ ^$ s+ X. _* P& j
[
" }; B& K1 T7 H, \" Glet new 0+ p" L6 g( \' J& D# k) W  B; L
;;
暂存新的一个全局声誉" r: T4 T2 [8 i/ s
let i 0
4 P: Z% [" W6 o) ]let sum-money 0
0 ~; z/ |8 v9 Zlet credibility-money 0
2 K5 X3 ^' e1 A1 s; }; Cwhile [i < people]
6 T/ U- T; z8 u: S[
0 d& A. Y8 b) C# y, Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ q* A- m# }/ i9 H1 R& |4 I# B! ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. I- Y: z6 L; g1 }+ t0 aset i (i + 1): l* w1 \, @0 X
]! B3 f0 u- K  N* H* o/ `0 N/ w
let k 0
  _: K' t4 T( g" b$ G0 m3 blet new1 0
6 w; ^* J7 r0 X5 L" N+ M: D( ywhile [k < people]
1 ^1 s" j# O" M& @6 v! J3 K[
* q) H) a' `0 a# G' }& uset 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)# K  I2 ?  e. a' j1 g. j
set k (k + 1)
8 W) N1 X+ R3 a, w]
9 Z9 H8 ?; m# O) J1 L: v2 oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , A# o$ j' q$ A& V$ C
set global-reputation-list (replace-item j global-reputation-list new)
  U' Q0 S. e! i. A7 c6 e3 L$ E" iset j (j + 1)
/ Q  R) }; O1 |! y8 u5 v]8 p1 `1 x1 k8 ~  U
end" Z1 }, @4 y) \$ u0 y
: B  ]. g% H. t3 y. J

8 `1 w1 K( m  s2 F* g
6 j# E( V) T5 f* c. U6 gto get-color3 _( P# {: S5 Y9 _6 `- o
) ~, g! b- O: U+ h" o0 [2 \& W
set color blue

+ `5 [; m3 F9 p  k' zend2 b- q& d! x5 v9 p. w2 F

( b8 o: I1 e  Z( M0 w* Uto poll-class
8 x0 ~: l, e3 [1 ^+ n. nend: ?# J# m1 h& T! h% t& L
8 t; [0 h- `# v: h' y! e' i% X
to setup-plot1
+ q$ U% J# D2 v' v4 k6 f" t/ k# H- {
set-current-plot "Trends-of-Local-reputation"
9 I! }" a( r8 D7 o0 T- _7 a" d

( Z" |4 v( q+ [" f$ K( e2 L+ Hset-plot-x-range 0 xmax
4 G6 V6 x: S! |7 Y4 i6 w7 M* B% ~
, U: D8 h( D1 i5 X/ ]$ ]
set-plot-y-range 0.0 ymax

, Q& M3 o5 c% T1 ]" `end
) x' Z* B% P/ R. H5 `* M) ~, G; d3 r6 v; V5 h; `
to setup-plot2
! f# \  V: n  N- o) N  n3 n# x' ~. J* J
set-current-plot "Trends-of-global-reputation"

$ }% f8 o3 w" [5 z" n. P  A7 q4 k3 L7 y; Q0 H) r
set-plot-x-range 0 xmax

  A: m8 z! r3 S. ?! i3 k9 Y
+ X  y8 N' j' M8 Q) Y7 O" uset-plot-y-range 0.0 ymax
' @9 w! u0 ]( G2 X, V
end* T- B  L2 _6 e/ i& Z! w6 f

8 j! b3 R! V: _6 j0 x8 @! Vto setup-plot38 |8 y8 K. e/ Q2 L; ~5 A# ^/ Q

7 L! l* D. {1 K) yset-current-plot "Trends-of-credibility"
* t  h; o. S& P, P# n4 l
! _( y4 t- ?; ]3 b) V' f9 [
set-plot-x-range 0 xmax
# m  e; v$ I) V/ e
& m( M9 d8 C/ ^+ z
set-plot-y-range 0.0 ymax

. r# B5 _0 e& }, ?0 w. ?7 Uend
8 t/ g) n' O2 E1 b  [6 \' Q- v* h5 c+ n5 P
. i. k$ i+ k# F6 A7 \to do-plots
7 b  s& ?' p* i7 n7 v% jset-current-plot "Trends-of-Local-reputation"- i; i* [1 q7 @' Q( n% Y, C0 I; C: T
set-current-plot-pen "Honest service"& J$ D: _- l1 S$ ]6 g
end0 l5 ?4 Y4 B( [4 J. s
3 F8 B9 I( F. E9 X" H
[ 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.7 x& \0 U9 @) M0 x, [6 j

) U6 L# J, {+ X0 z( f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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