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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:1 k. D, P0 ?' U5 X2 i
to do-business
& w0 Z1 o% T' m* v rt random 3604 H- E9 |* z& d2 t, `1 |- F' U
fd 12 }* R, }4 E" F' E# t- e
ifelse(other turtles-here != nobody)[
7 C8 E  U' k+ [2 B   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.) {6 d  I( z& n# F7 k2 M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 g$ B3 e! E0 `   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- b# K0 c" w$ H& l) z   set [trade-record-one-len] of self length [trade-record-one] of self
8 y' V. E  p' O% ~- I! k   set trade-record-current( list (timer) (random money-upper-limit))
) G8 S- L3 I& _: L& Y; j* B: b. V: {) N$ B7 ~# r1 s! D; r
问题的提示如下:; T5 `6 q) r+ G9 Q. ^/ N+ r

, @, O. D& f+ }9 \; X$ o  ferror while turtle 50 running OF in procedure DO-BUSINESS6 a6 k  _' u+ ?  P
  called by procedure GO6 S' {6 l! P1 F
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 d# e6 n# [1 N# s4 A
(halted running of go)
$ B4 G; [0 r4 J$ F: _
6 _+ |1 O& V" `' _! E: T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~~% \# [$ P: j, t0 W. v3 a' h
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( F2 ^5 A, m) Y
globals[" |; N9 j: D6 [4 t9 a( N9 c! U3 c
xmax3 T' m2 S/ ?# F7 \3 d+ t" c4 v9 j7 ^
ymax
; _) b  u! v4 k5 Dglobal-reputation-list$ P! ?) @9 m; C" U$ T1 n
! Q+ R$ y5 @( P, A" k) i+ A
;;
每一个turtle的全局声誉都存在此LIST
( f0 t4 }0 |* X( j% Y/ [credibility-list* X. z& H* s6 r3 V- p4 D7 |: D( T
;;
每一个turtle的评价可信度% v1 b* w1 f& _$ g/ f) ^& _
honest-service$ b; c3 A% y5 ~! q( m0 r
unhonest-service/ Y6 u) W% |% ?# G( z" `" R
oscillation
& L6 G2 O# h5 Erand-dynamic9 a; K0 }$ `& `9 c" p, ?4 L4 G' D
]5 |2 i9 J1 i" v
. W- y% ]$ k4 F' }; n
turtles-own[4 b- |8 u8 _& v/ i# j2 q. z+ R, U* m
trade-record-all
0 ^% U' ]6 Z( @;;a list of lists,
trade-record-one组成
# J, R- i4 d& F, \  p0 n! \trade-record-one
/ l, N5 e4 d0 y5 n# p4 X; d/ z' y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* ^" v8 f" Z3 r2 y. B+ I" l! J

4 A' l7 B' Q& L;;[
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]]
1 u2 w! D9 e! J% u/ _% Z' ztrade-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]5 d) }4 r( ~" p5 m) }+ ?
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
9 O' r3 e5 [  R! p5 L" A4 hneighbor-total; }; P+ F# h' \1 g' _% b1 U
;;
记录该turtle的邻居节点的数目: P4 C. j; {+ O: U1 k+ e9 ~
trade-time6 Y1 A# G7 r( r1 t* [4 `6 \
;;
当前发生交易的turtle的交易时间
% X* o! B) R  ^" wappraise-give$ n1 ]3 r1 \' a6 G, o5 U% x
;;
当前发生交易时给出的评价+ d5 H& _+ F  Z- X9 @
appraise-receive- M! Y  O$ M/ c' f: U! Q9 v
;;
当前发生交易时收到的评价/ \4 ^: R8 _8 Q
appraise-time
' r3 b) X  I) B;;
当前发生交易时的评价时间
8 g, m; |, {- ~  H# W3 nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 i/ }$ m! V6 ^6 `4 x* W5 R) j. ]trade-times-total
% }8 v: I5 u! ?  M) N;;
与当前turtle的交易总次数/ a" y* d6 N3 t! r
trade-money-total5 t# J$ |2 K4 `  A
;;
与当前turtle的交易总金额) s. a/ e5 H. ^/ l6 J* C" z* h
local-reputation7 x1 }4 y$ |( w- G
global-reputation3 N# s" j/ J& W. ]: ?% D0 ]
credibility. q$ v1 ^/ O( K! t+ R4 T
;;
评价可信度,每次交易后都需要更新: [3 ~" ]6 }0 {
credibility-all7 Z# |; w! V2 g
;;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
! k) l9 t$ D8 W8 d9 l) k
' m; f1 c3 f- D) 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
0 j- f; R7 x9 P: M) Q  P1 Zcredibility-one
7 w  A2 \$ V1 g- s7 L8 ?" {, `;;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people0 X. C3 k" q: m4 \% i+ D$ D# @. f
global-proportion3 j: h/ W" O6 I9 A0 i
customer
, R* G2 {# `& Tcustomer-no1 D5 u5 i2 e& \' g- i, M
trust-ok& ]" X$ A6 g% r% g) e# e& H2 c
trade-record-one-len;;trade-record-one的长度
+ \. \* r( y4 [9 f]
) c1 i8 Y+ b% `0 t+ ~5 h' A9 }( h
;;setup procedure9 e- z( w) W! {. u& M) l
, L7 o+ c# ~1 r/ T( K/ A* d+ k& H
to setup
6 r, p7 ]8 J+ K0 L; B: U5 |: w0 E, P+ d
ca
. d( O# z( v2 T9 R" U" S, e

) c0 V# y; K+ g. h  j% h2 T& qinitialize-settings

. k! |1 _+ w" z; }7 a6 {; ]
: `7 K# J5 N; S4 u" P4 fcrt people [setup-turtles]

3 w. T, P  `$ X  ]5 n! `1 M- r  _9 b. D- L
reset-timer
; v& P/ q$ m- L8 ?- l2 k3 F

$ ], w4 ]# L6 Z' j( Ppoll-class

% c- R* Y# t: x5 B# g5 q
  H4 ~# \8 |- C2 z+ F" G. |" F& T) r' Xsetup-plots
! O4 L" s+ b* l4 t9 \5 H( O5 p

5 ?% f5 K! g5 E* L( ]- D! wdo-plots
2 S8 A6 {. P8 W' V7 _, n; `
end! Z4 h: c% C7 N
# y; ]! ]" C; D3 M) S; h. d! F
to initialize-settings# Q( F. I* G, W

4 x% L8 N# p  v* o7 E2 J( H) Yset global-reputation-list []
5 C4 X& |  }( N! X: o
! u) s5 G, M2 g$ @0 O% |8 H: H
set credibility-list n-values people [0.5]
, W; f9 ]  n2 p1 K4 v8 q9 U( x
9 z: Q( o1 m+ f
set honest-service 0
; ?$ C; p% |5 {5 ^/ y

* S6 }8 V; q& `$ {0 i( x9 xset unhonest-service 0
& Q  f# J; j& C3 |0 k3 O
6 [5 C# o3 [6 e# j
set oscillation 0

8 F( c1 v; Q$ k4 Q. H! R" l, P) I$ u+ ]
( D! }  _+ Q9 x5 d$ Mset rand-dynamic 0

0 u% i3 m0 J$ Z, \/ ^end; |8 J1 q- z6 j% Y; t7 ^

- ~' L* v) j6 C3 ]" ]# R) y1 eto setup-turtles 9 f+ a$ p$ D+ I
set shape "person"1 ]' S* {% ^4 {" [" T  y
setxy random-xcor random-ycor
2 s/ Z3 ~! a1 r: F' {( oset trade-record-one []
% z+ b% p- }) k5 X& m* r, a+ q& G- M

7 [5 j0 r) X# m+ pset trade-record-all n-values people [(list (? + 1) 0 0)]
+ x2 M2 J" H! C2 w
5 h' S6 y6 d* C- v; y# Y7 T7 g; _
set trade-record-current []2 O( |% C9 T" a7 E8 ^
set credibility-receive []
& p. }* b4 g& ]! C$ [) Nset local-reputation 0.5
7 e" k* n$ v1 A. E1 U. }# N0 N' [set neighbor-total 04 L$ B2 L' t! {5 J$ m  j. F7 K6 c) K
set trade-times-total 0) R. s3 ^7 m8 E  X
set trade-money-total 0" T  _7 c+ ?/ @( V8 S7 }
set customer nobody
/ X9 P  Q& k: v& k* z2 i) C' s' A! R/ }set credibility-all n-values people [creat-credibility]. v2 r1 [' A% u2 c
set credibility n-values people [-1]
. p0 Q" Y; h2 `, c5 a0 l6 Aget-color
7 `( J# ]+ ?5 H

0 f4 O2 a2 }  ]; W; Cend7 J3 b; {# T8 {, }. Y

: a- J$ O  b3 Y/ G6 Ito-report creat-credibility0 p9 y' M+ d7 x6 v! ^% q2 V
report n-values people [0.5]
3 ?1 d$ ^& O1 X/ n: n" Z- E7 e$ {" k( Iend8 w# H0 o- s8 Y; d
! \0 s2 q# s3 {/ i2 G/ T
to setup-plots- Z5 J6 h5 }$ _
% [3 G6 t8 U' O; ^
set xmax 30
4 o! c! a) `0 e) `" Y$ e  F

; |. T. ^) Z+ v- {set ymax 1.0

: J0 c4 u; h! |4 Y' K- ^! l' v6 z! S/ I9 e) |. U
clear-all-plots
0 x) E0 H: V1 E$ M
/ u& U- E9 H; h7 ?/ o
setup-plot1
8 l, T) d" d' O. }

; o5 a+ ~& X% Y1 {: _# n1 c. i" Fsetup-plot2

  v1 W+ r# P/ d1 ^. s' \! d/ v3 a  _( O4 g" j" B
setup-plot3
% L$ R0 s4 o) p! M% `% e
end
1 E) c4 W3 t1 c( l+ e! z& t2 z" B
;;run time procedures% W: X- p) X% ~
) x/ x; F! s9 f2 |. M4 y6 @' i2 P! \
to go1 }4 q: s; r( x: ~1 g2 B

7 N; b  S8 m; \; q( A) Oask turtles [do-business]

- j% @+ ^$ G/ z0 mend- d  E* C. m! x' V7 D; M: g

& l1 b" [. }- D* P, mto do-business
2 C  r" Y. i  {( K
6 M; |& f7 h% U: {
& S* q2 V; G! {, b( S
rt random 360

# N/ e# Q7 v+ o0 p3 c  b
* X  j1 ^! R( W- f# A" |fd 1
; g  f( N$ f. J  U6 E9 s3 u

6 U3 y+ ^1 V+ l3 L0 e! h4 t: O$ q  C& ]2 _- qifelse(other turtles-here != nobody)[

1 B2 n* I, w5 _) E% y
' |# W; n$ ]6 _, S/ ~set customer one-of other turtles-here

  J( l# ^2 f9 k+ B5 |1 W4 h6 U6 t9 c( s" g. s1 b
;; set [customer] of customer myself

6 `$ I4 K  ~( @- D  k. ~' O
0 N2 W- n$ A, V8 F  A; D# Xset [trade-record-one] of self item (([who] of customer) - 1)
* n/ E& B: Y) m: S0 ?' ]- [: U[trade-record-all]of self9 R% U) k, |) F+ _& j; g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& u- x0 E* }% `1 D
$ M( O, _9 x3 uset [trade-record-one] of customer item (([who] of self) - 1)
; y4 f: A( R. m4 k$ t: r[trade-record-all]of customer

! {; m8 W" z0 \  C4 f, j$ y4 T8 a! O2 _0 D/ ^$ J5 I% R0 ^  F. b
set [trade-record-one-len] of self length [trade-record-one] of self

$ f1 j2 v9 ]1 x9 C1 k! b. Y# x$ W5 ]# P1 z* f' T: r
set trade-record-current( list (timer) (random money-upper-limit))

: |5 F  ~" O, u2 d. d% ~. A; a( O4 E
ask self [do-trust]' M4 ?# c+ a( ?  r8 g9 b9 ~5 p
;;
先求ij的信任度
  s' J/ u  j' w+ A0 S& U
: e4 r- |( F$ i; m+ hif ([trust-ok] of self)
8 \, x% f# O+ ~& U% n) X2 k;;
根据ij的信任度来决定是否与j进行交易[( [$ k5 U- e2 T! T" M& x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- F% P% `9 @4 I" ?) f6 ?) F

8 a! p* ]1 C/ g" @# Y[
' C" y6 e# ~  f9 X1 S& J' i
5 V* v1 L$ x2 J5 `. t& G6 F7 g
do-trade

' E* M" j- w% s  b' F( \1 q1 P2 F6 f3 Y  q& g& P
update-credibility-ijl
! l5 T$ c, i8 W( P
8 j: V3 g. J/ c
update-credibility-list
& r  s2 L3 Y1 G# c" X% @- z: y0 E
6 o1 T* {! |0 h( k& l2 T

2 L7 K) l+ j- X8 mupdate-global-reputation-list
1 v* A" X4 C" J; }

- q# |1 j5 o% \poll-class

7 S7 r9 z9 \6 V7 ~# y) Q* v+ G+ t( |, o4 F3 s
get-color
7 [, s2 I7 }" c7 x7 B/ S
7 C; N4 h. Q1 x/ x
]]
! \% D7 R7 [# Z  U1 N* f) e3 [# w. T# N' M. m& f7 m$ a
;;
如果所得的信任度满足条件,则进行交易
, _3 s- @  V0 i0 f3 M3 N
6 S' j/ _, C; K3 ~0 M[

0 E) i0 e7 t; H" P5 k
+ h7 ]  r; b# A, s# R$ a; ~0 Vrt random 360
4 M! t. w. ]1 t. Z! N. Q9 {0 z7 X
2 B( P' i6 Q" Z3 R$ i
fd 1
# @7 N' P- Y- p5 B  y
" S5 b, \  Y$ c6 i
]

6 J( E" k: a# ?- ?2 U5 h0 |$ d! ]8 c/ S# [: g8 h' p/ @
end
0 b% U! f, |) Q2 S% N1 w- t

. R$ G% M# S7 f- c8 s% f) a' ]* zto do-trust
  C% x1 j7 ]' {- Fset trust-ok False6 p; K. W8 B. c' ^; o

5 @; t( @: ^( x& `6 X2 H2 q
% G: B) Y+ y! p& `( f7 K. T
let max-trade-times 0
/ o/ v" o: m; m; L# ^3 c6 rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* @) W! E' P0 E, t6 t5 O
let max-trade-money 0: ?1 \: M+ l* i7 |7 f3 I3 \$ r9 d
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 ^! ~3 L0 }3 r; y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: S5 M6 m6 o+ p* j( C+ S5 \" C# K6 E9 O; x

" B: p0 ^+ A1 Z- Uget-global-proportion
: _. W+ g. `  g1 \let trust-value
4 x" }2 Q' f  @) klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 L# m+ U8 c2 V4 I! U7 _
if(trust-value > trade-trust-value)
9 V0 }3 N* Z3 G[set trust-ok true]: ^5 E9 h7 |9 O3 h& j
end0 @; _" o+ Y* B( q9 b
* e: p0 a) S+ |* N$ w
to get-global-proportion
) k. I+ \* @0 o' [. Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  r+ _& e* T1 L( q3 f! v4 d; M  C[set global-proportion 0]7 o8 D% B& ~( r8 q' _; t
[let i 0
+ x; C. s1 E6 p1 Qlet sum-money 0
9 S- O% C- J+ ?) U9 {7 p0 Ywhile[ i < people]
1 k( G$ P9 m# o[' A; G# ?, Y7 m! c" M7 D! N( J! |; u
if( length (item i6 j; }7 a' R* L2 r7 D+ \2 A
[trade-record-all] of customer) > 3 )

- `& a- s3 y! p" y5 b" X[2 M6 H+ j7 U  d% F/ w" G, |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% x9 G& Z9 C6 E]9 O/ g1 J, p6 ]  r
]' P0 Q" j% Y9 w8 f) f. }+ Y
let j 0! B  e0 r3 v. D8 s( W$ m8 V
let note 0+ W  b4 {" c7 [: O
while[ j < people]! p$ `1 d2 V/ R. Q6 x4 w
[
: P1 E9 p; e: m; @0 bif( length (item i" X+ y; E  v1 e8 k. I# U
[trade-record-all] of customer) > 3 )

; s+ ?* N2 Z; X! r; u* q5 C) |0 b[
3 u3 M* T" |$ V: |1 Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! ~2 L4 v. \1 n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; h0 V- X# L$ B; l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 E9 f5 h/ n0 }" l]
* ?2 Q8 A2 v4 @1 }( [0 j; W]
$ I5 c) t/ y' ~5 {) E+ e# Uset global-proportion note5 ?# N  O0 ^) C, w& X3 D
]
& z5 a7 d& _& y. O0 [- send9 s- K* l' u$ a  {* g8 ~
7 L# V% ]( O& Y1 o2 d2 u
to do-trade
1 ?) L  ~7 b' X' s" j0 Q;;
这个过程实际上是给双方作出评价的过程# g5 c2 H. Q8 T. \0 Q3 _& w" N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: ~- H, h1 }# T) V' zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  w% V6 Y7 ]: W& o5 ?! i8 i
set trade-record-current lput(timer) trade-record-current: }3 @0 W$ Z3 ]( O+ k' I3 w- O% J
;;
评价时间* a$ ~6 ?! Z) M- q
ask myself [* Q$ ^8 ~7 @, _) s( C1 }0 @; V, Z0 q
update-local-reputation, A+ [" L2 @4 v% o
set trade-record-current lput([local-reputation] of myself) trade-record-current! j! R8 I7 E$ O$ z) |6 B
]
& I1 ?- W0 c0 M" O6 h, Tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, I; u  _, A& X, L;;
将此次交易的记录加入到trade-record-one
* m9 a. v& J2 l" ^, N6 Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 {- Q* m; O8 d) s2 K
let note (item 2 trade-record-current )
* F. i; q* k7 d4 w3 |: K  _" Kset trade-record-current
2 z% ?. T+ Y1 Q, {1 n. W" D3 \(replace-item 2 trade-record-current (item 3 trade-record-current))
, Y5 m: Y5 G! q: k1 z  @5 t: J
set trade-record-current
3 `8 d* j( a2 l" Q7 K' x0 [" P(replace-item 3 trade-record-current note)" O, N" q9 h: l' t$ Z* @" Z; j7 g

7 ~: A0 m3 D! P1 c2 K. P: e7 ?' q

2 o+ {9 u( o) _, q1 Eask customer [) P1 S! [( ]$ |6 P
update-local-reputation
2 T2 G4 D1 j" g7 y$ `set trade-record-current
$ Z/ [* ]* A& Q6 f( c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* @' H6 S0 c$ x4 T]
# h+ y6 W) `2 N/ v  p* O! V- H; c0 h' v; M3 U) f! a" p5 q
* F* g: H  ^+ `, a* [0 p
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 E8 n6 W" P6 q+ }
" D5 G* c! S. f3 m9 B" v" y( W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 Q7 y% L' p8 ~2 e0 L: Z9 B
;;
将此次交易的记录加入到customertrade-record-all+ a1 A& t5 z1 \8 c4 M: Q4 V" c
end# y, o' M1 p2 E+ ~

% g! k3 H" p' I. V2 B) jto update-local-reputation
4 q" g5 ?0 ]: r( X% ?! Mset [trade-record-one-len] of myself length [trade-record-one] of myself8 L4 Z; _2 A8 Q- c
: M: ^' Y: b0 Q) A) h8 ?# |
( t0 O9 ?8 ]1 \2 @1 q' H
;;if [trade-record-one-len] of myself > 3
2 {* V* S# G6 m& ^- v0 O  G# r# X
update-neighbor-total
& c# H, h+ g4 L+ n;;
更新邻居节点的数目,在此进行
; ~+ h" ], p- N2 N; Q+ glet i 3' J' B$ z$ A+ C
let sum-time 0% `- o3 f0 E3 t
while[i < [trade-record-one-len] of myself]
# X, v; l1 `4 a! s4 V1 G' y  c/ h[
; V6 ?9 _# O' R+ c2 a2 W& ^; y. qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 m# s+ ~) a- s$ ?' E, Z$ A( Eset i
% E9 X% j: u: g1 C4 o( i + 1)

9 c) g/ j  u/ h" z; @; z7 |) []; O' Z2 m) C# {4 X" y
let j 30 ]' G- S1 ~( d2 o
let sum-money 0
& N. A, a+ ~1 }- n2 R% [7 Jwhile[j < [trade-record-one-len] of myself]1 W& f: z* l, A2 Q
[
. F4 i9 {  k6 i9 Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)0 |7 h' C- a0 @( Y
set j
4 |4 L4 E! I# @$ h. z7 a, u( j + 1)
2 O2 }  {. m3 c! Q* O5 w
]
4 A% v" J6 Z# rlet k 33 z% y( p. F" @+ @1 X* z/ B- U( U0 Y
let power 0
$ }1 X; ?3 V8 [9 ~, W( b+ Flet local 0
; w5 d% d' Z& H' Vwhile [k <[trade-record-one-len] of myself]
: n* n$ O" u6 y: a/ \* e! a, ][/ ^* Z, ]% S8 _& U9 N% ]- |
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)
- |4 @& ?, F2 \1 {9 n1 g" H% u0 m% \set k (k + 1)
5 U! I" ^  y0 w. s% ?8 f( [6 X) t]' U3 L  |% N, H1 N
set [local-reputation] of myself (local)
3 T4 v3 }8 }) Zend
' F. r' a+ A8 M, U0 Q! U
7 K8 N# z) A& W  d+ P2 ito update-neighbor-total/ G1 r- I9 V9 Y( }/ b
% w5 `1 R5 t' H( n2 M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, O; }* X- E2 B. H$ D4 J
6 M* G8 G% q0 [
& P& D: M% `7 z7 W. S) }( x+ Y
end
$ a9 T5 S; C2 ?1 F% V$ L
$ q9 U( s7 t5 y/ I+ l# [" qto update-credibility-ijl
7 E6 `5 V- J0 O& B; s' ]) ?
9 r9 ]9 b# }' P9 {& q0 K;;
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。
) x& \4 e$ w4 T; U& Ylet l 0
9 I7 I1 v9 X" _5 N* \3 V& |0 O0 y! Jwhile[ l < people ]
. |  p: V$ u! j! A2 R$ W;;
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3 f) s& `7 ~  _  J" b$ T
[
: i0 ?- q* N6 {) o& C. Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 r/ o9 |) ~  r7 r. {
if (trade-record-one-j-l-len > 3)& I$ d, T9 d& K: I: ]4 c$ f
[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
9 W) X( M& I# }let i 3
8 u, j% S+ C, E0 ]5 l& ?let sum-time 0
) d1 s) G& T# `7 }while[i < trade-record-one-len]
1 H+ S' v2 o/ }/ L- o[
- n% b/ u' x, Y3 T" n; rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ D8 Q" H" f! S. m4 Q" iset i9 h5 s. m/ G$ |% i) X* ]; E" R
( i + 1)
; |$ M' c$ `$ c* b
]" ^3 h6 a! K# w4 f& X! i4 i: z
let credibility-i-j-l 0
1 \1 O& C7 h$ x' v;;i
评价(jjl的评价)* X+ m& [6 h" M
let j 3
8 M+ f0 m; ]( }8 ulet k 4$ [* A; ]$ B8 i2 p0 A# U# G6 i
while[j < trade-record-one-len]
* Z& E, M2 \5 K" L1 q$ v- m0 @6 ?[$ y+ k/ _, L! Q& h' x
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9 h4 H, d1 |# |$ u3 `
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)6 |6 T9 v5 f8 @3 K+ s. ]- |8 @
set j
) i0 a3 _& @1 ^( j + 1)

; {8 V& @7 [; F8 T]5 f5 F+ r/ I7 v* 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 ))3 ?: E) h+ }5 o+ e6 Z5 t) T3 O8 t

7 s8 h6 _/ S# a4 ]6 j% ^; Y

2 b& }. y: h  z, \* Zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 n( R- h9 |( p; G8 o0 z;;
及时更新il的评价质量的评价
% f6 P: _# V$ b& ?- o- fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 P9 P! h7 _: T" J- J
set l (l + 1)# k4 Y! ^( T. L6 o5 m5 _
]
5 z8 k: h( f: F/ }/ p4 e( ]# O. F3 tend1 w9 t1 b  u6 w6 C3 b

. }: C5 G5 J: O3 Q5 K  p( D4 V# Q4 yto update-credibility-list: f( U& c- c; q/ D6 K
let i 0# q# E5 E8 v5 q/ h" o
while[i < people]1 h9 ~; S# R- l) C. K
[
! T! b- k: `9 h9 y% ^' j1 glet j 0' J  t0 R) ~, x5 R5 t! {* F
let note 07 n) X6 Y( B" K* V  P
let k 0; S5 @& T9 x6 k: q
;;
计作出过评价的邻居节点的数目& f: x8 X; W, u! z+ l8 R! C% d5 r
while[j < people]
! s6 W9 ^1 r8 p& n1 A$ Q[
# T) L% s- H& F1 K" R" sif (item j( [credibility] of turtle (i + 1)) != -1)* r* D0 p  S9 r8 p4 ~# x1 g. G4 W
;;
判断是否给本turtle的评价质量做出过评价的节点  _9 s1 o- Q8 m) p, o9 M  O
[set note (note + item j ([credibility]of turtle (i + 1)))
' |( F: v/ D9 N0 ~3 U+ _;;*(exp (-(people - 2)))/(people - 2))]

4 P1 d4 X! s* J. D0 nset k (k + 1)$ J& R7 _/ ]2 g7 m* Q. o$ i
]
2 }4 `3 c/ R( v( G; wset j (j + 1)2 D3 f, W9 Q7 e6 ?
]* ?( T. g) S5 P: z) @
set note (note *(exp (- (1 / k)))/ k)5 \/ ~! F3 Y- M& e
set credibility-list (replace-item i credibility-list note). P  A  V2 J9 V% r$ S! [/ E" ^% z
set i (i + 1)6 C* O* R7 G2 |. E
]" s; a+ I5 e" x/ u
end0 k% X6 g- s) O  j! ^

( b7 w0 E) }$ U7 U; V0 nto update-global-reputation-list
, P) _0 d8 x: ?2 Q) glet j 00 z4 V3 l7 M3 u' c8 G
while[j < people]4 K' N  E1 |0 F# f
[, y0 J/ ^8 i5 ?
let new 0* \: Y7 \5 {+ e2 Q# k
;;
暂存新的一个全局声誉: R/ A: z) _7 Y
let i 0- n& \3 ^4 W( c$ u5 Q
let sum-money 0# f- R& y! x! r+ G8 N, T4 o
let credibility-money 0# `/ h2 ~$ U; L) F& S
while [i < people]# E# }1 |0 L1 E8 E4 r
[
9 u- _, q! p* _$ J* Q4 _2 h, A0 `" hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# e9 Z) C; z3 T" c% P3 wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 G3 x4 n4 p2 L1 O6 Hset i (i + 1)
4 D- [* N- M' z4 P$ f]
( g! @# _; |/ @let k 0
, A0 ~/ J6 T2 e& k3 Vlet new1 03 _3 R% N! Q- H0 R, M3 X
while [k < people], s2 O! o) }* z  c3 Z  Z/ j
[3 ~- A8 R& P$ a% U. q% u
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money). d2 R2 L5 Q4 J( E
set k (k + 1)
0 o6 K# D/ {" }6 e; w3 q]7 x; X( {2 P4 [" g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 B9 z5 V* A* S7 ]
set global-reputation-list (replace-item j global-reputation-list new)  n, D9 ~& V6 Q* Z. v! L4 d1 H4 [
set j (j + 1)
: a9 `8 `& o% s1 R4 r% ^9 w]; k2 c7 v+ f8 C# D6 D
end0 \! E# ^0 u. k+ B/ m
4 {( M, P& \* {2 A% O
$ Q! C/ ?. ~" d$ m# `

% i3 R( {; u0 y8 f( Dto get-color
1 A1 f) R. e2 X6 \# G( V9 k0 n8 D4 x
set color blue
1 D6 Y1 O" p9 ?
end
! E9 A  g0 F/ y! ?' g5 ~
4 i& ^: }, n3 ]7 I! [2 J* u; {: E! ]to poll-class
2 {( }8 E/ P  r; c) m6 n' Wend
( W, A+ O5 j! c4 w) ~( o
+ o! x7 _* L% I, v1 e6 }! Pto setup-plot1
3 N& l' o6 j3 q5 j- e" o5 u; B$ b9 G7 X- ~5 i& P! z8 e* U+ J
set-current-plot "Trends-of-Local-reputation"
! o+ |( a+ Q7 y5 @& R; w

+ ~' u1 S# I- q- \* \$ {set-plot-x-range 0 xmax

, i7 l4 ]4 o8 K4 k; R) E6 N4 P. M% x1 E! J9 A
set-plot-y-range 0.0 ymax
2 Q( {; v1 r4 P+ c( q! g
end# m( u  |1 b6 {$ ]
4 W' `' K# w5 x, `5 [- w
to setup-plot25 y' a- b4 x) T- U
! F% _  T. {8 M- a6 m2 E
set-current-plot "Trends-of-global-reputation"
! S. l8 ^! m5 H

& e3 O* d. N6 g- U8 V5 J0 aset-plot-x-range 0 xmax
# A* G5 _; u$ y/ {' w6 d
7 Q1 d, f1 N3 N
set-plot-y-range 0.0 ymax

1 ]4 I4 u! k6 T. dend$ g& u  l0 ]+ D+ z1 Q
1 Q( C: z! e) Z) }' }/ p) A
to setup-plot3  S+ g$ k- Z- o- h

+ U% D! j2 o! X% e! T! M2 q3 rset-current-plot "Trends-of-credibility"
' r+ P' k% @3 C# O: L3 R

0 W# `7 m  w- f% qset-plot-x-range 0 xmax

- J" O) J! h3 m/ D+ K; ^+ Z  f( G- b8 C2 m
set-plot-y-range 0.0 ymax
: C/ g9 s1 X) }) i# i
end2 E, ?" B4 q. H" V

$ }/ ~% R) |# h7 v) q/ E1 Kto do-plots1 l9 S+ Y7 r# V% ]
set-current-plot "Trends-of-Local-reputation"
2 A5 `" `; x" I% R. b& Aset-current-plot-pen "Honest service"
# ]1 a% G& f2 N: [& _: T" o9 i1 k; aend! ^' g  R. C2 M  W3 g$ m1 f) T
* e, {3 s, [& q4 g( j9 A
[ 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.
( X* B  C; g7 t0 k% K, R
, T# A( ^  i1 R% E2 p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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