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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:/ O& W6 i1 \! i9 S- b+ y
to do-business
6 ^; L2 D% _+ \2 f" P rt random 360* D3 ^" ^' B  }; B. O
fd 1+ i6 f8 G: T, ?& O8 d& ~6 P
ifelse(other turtles-here != nobody)[
: b3 g: D0 x3 }% a   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.9 L4 d; y. e8 d) D; ]& Q3 h6 H0 _
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 _* s4 O6 b% a6 R3 i; O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) P4 |  Y- L( I   set [trade-record-one-len] of self length [trade-record-one] of self5 S: V9 R& l& w; M
   set trade-record-current( list (timer) (random money-upper-limit)). ?, z. m) m6 D1 w

* _* y0 ~& E8 b9 d$ N问题的提示如下:9 L) C/ J6 I% _3 Z# V7 j; \

) x8 }- e1 m; U5 werror while turtle 50 running OF in procedure DO-BUSINESS
9 B" G) J8 O5 U% U  called by procedure GO
3 t% I. ^. i, k6 A, y/ _+ O! ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; E) D% @( h) D; I5 C7 H' x
(halted running of go)4 d( ^# E. k0 v& e% l5 f) r

, {+ y' T3 `& V# L& `9 J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~~* ~& F" ]( k; O) O( P# w9 m
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
7 O7 I: y* S0 }+ H" K) z, u$ e' F  Nglobals[" N! _$ U6 x7 U
xmax" ?4 ?( k% _; \& {
ymax
: J5 m" F4 U0 ^) s4 d3 }$ I/ ^! Gglobal-reputation-list6 [5 _# M& z* M9 _% e
& j8 o: a$ g9 {$ _- u
;;
每一个turtle的全局声誉都存在此LIST4 u; X5 @' F# A+ }( W5 v
credibility-list3 Y2 ^- J. ?4 ~1 A0 v% |
;;
每一个turtle的评价可信度2 {6 Q7 R! b1 Z  B
honest-service
$ ?, t+ }* {% [, R  A) zunhonest-service
' D* w( T' Z% v  X3 @/ roscillation
4 G9 `8 a, b/ O1 [rand-dynamic
0 _8 d- ?% ^6 r]
. N* v- \. j5 R" n! z7 \4 f4 U" c$ j+ u" s8 V2 W
turtles-own[
$ y, C1 ]+ [4 k" m6 H. q1 ]' q" Rtrade-record-all% F, y2 q1 i+ u; d6 j
;;a list of lists,
trade-record-one组成$ L8 R$ {. Z' c7 T: [: R% G
trade-record-one( G2 I& q( t1 }0 ?, r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 u- I* u' M, z0 M' W
; x5 D. X7 U; K. @" o" y
;;[
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]]
$ W2 E* h( {! Y- Btrade-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]8 R( {7 R! i5 t6 p& s
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
2 [/ q3 T9 @* }( J/ Ineighbor-total
9 A: f# z# Q$ h;;
记录该turtle的邻居节点的数目! i  Q& `) ^1 [; u6 S/ l3 j" b
trade-time* y+ T, D3 V$ `2 D2 ^
;;
当前发生交易的turtle的交易时间
% a, V' b& _0 mappraise-give
( B) n; ]* O8 [/ B;;
当前发生交易时给出的评价
1 j4 Z" C( }5 A& X" F5 p# m, H. m0 Yappraise-receive" P- S9 f& R- B  a8 d0 [5 O
;;
当前发生交易时收到的评价$ R+ u9 c- x. i7 P5 T
appraise-time
% q8 h1 [  L$ ]$ d; r;;
当前发生交易时的评价时间+ B: ~: |2 d" }" i( `6 U3 z) `
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
# K% u9 _9 u" ~3 R3 X6 e6 ]trade-times-total
) v, o7 t- Q) n7 i1 t/ H. v;;
与当前turtle的交易总次数
* t3 [* D  b2 T5 b3 \1 D& H3 }trade-money-total1 @. Q( L' [! W9 l! k  B; f0 w, e
;;
与当前turtle的交易总金额
2 O; E% U* e( Vlocal-reputation% X( f/ a& ]1 q* ~( q" g
global-reputation
# I7 |- g  X5 V7 P' T9 ocredibility7 C9 U6 v& g2 O! N4 @9 G* E! k7 y
;;
评价可信度,每次交易后都需要更新
$ |1 O/ @0 n7 I4 i  [1 kcredibility-all
+ }8 M$ x8 O/ k* D4 A' T;;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# D/ s3 I; ~) T+ m; e
/ p% d( K) ^0 D+ ]2 I6 @- H4 x# C- _
;;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, z2 ~) M/ n6 ?% Z3 M2 k
credibility-one' j6 ^; k2 u- p% t+ a) N
;;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" m$ T: O7 Q/ P: r  e! a" `3 d
global-proportion8 j2 u' N6 D' h$ [8 z
customer9 {9 U, b, t1 F3 m- [3 L( I$ p& V
customer-no& u$ T- J4 S& F6 U
trust-ok
' X0 L- o& E3 x# I2 ]" g& j" btrade-record-one-len;;trade-record-one的长度% _" o2 j5 D* L3 V+ z
]# V. Z0 }+ d' D; z5 N4 ~

- Y6 ~' |% F& u' a8 c4 o6 X;;setup procedure$ P2 W, ?) i6 \2 R6 B
5 ~# M0 j9 G1 `! b1 J- c! W, t
to setup! Z0 V% L: n: y7 X) V3 Q% N" h& d- N

% ?& x# {" V: I: Bca
7 l0 K1 o+ F0 b
5 F, e/ @' l4 f4 w5 W5 c8 d
initialize-settings

" n+ x$ L& m% c# B1 B1 {& _# R& |- g2 `2 u* c0 t
crt people [setup-turtles]
+ ~& F5 @* G" l  T4 f

3 g+ Q  z% l9 ireset-timer
  n5 @; ^! W3 Z
. ~( C# g: o  H1 M# R
poll-class

; R2 R/ V9 v6 ]/ U1 h& S6 S; q6 O8 `& J' \7 F  n9 |
setup-plots

* z/ f) d$ l1 H/ G% y/ T& E/ h
1 e% [, E# M. X  A, Y  M2 Odo-plots
& S0 O3 Q; V* x6 _
end% C; W/ g4 e' y  }0 ^$ W

8 d4 l3 y- {. Nto initialize-settings' ?+ u! M3 K4 \: W- H* A% Y$ {

; ^' h8 O- s# r/ m0 @set global-reputation-list []
3 L* c# _% T6 }5 a& E* S' M; G( B

* v+ a; F1 Z: E' }. Vset credibility-list n-values people [0.5]
& N# g5 w' g& n  ^$ p3 d7 H
. D9 }8 A5 A2 R1 A
set honest-service 0

+ z6 U! L- `' n; o( M& q" t) a+ L8 ^
set unhonest-service 0
- R% X  x& X( u* v: Y

4 w: R2 T& _& P" bset oscillation 0
& j1 ?' L& b5 P9 H$ s

" @: ~6 F8 C" j$ i( {" }/ mset rand-dynamic 0

% ~; |; Q/ r: y( l5 Gend
( H, p8 [, S5 M5 o3 g( O& o: U+ T
2 [" h( s2 d. o+ g* c% ~to setup-turtles
* Z3 `4 B; }% |1 e# Kset shape "person"$ l- u. M. ^/ k7 b8 ?/ n
setxy random-xcor random-ycor
$ A; t3 @3 p2 o. ?# c4 A" q  Kset trade-record-one []8 x* x- _$ E* e; q8 [0 `

0 ?, N2 y0 A) s* Yset trade-record-all n-values people [(list (? + 1) 0 0)]
$ P) N2 M0 O$ C/ z( K- |

/ r$ I0 b; K& O/ F) `set trade-record-current []" k* o' U( b- l9 ^! V: q
set credibility-receive []
9 f6 w0 D8 [- D: w# w( R0 p, g2 \6 Nset local-reputation 0.5) b8 p( J. `! J0 a
set neighbor-total 0
5 r; g3 o6 E1 c0 h9 `$ `" |1 w3 d1 k8 Qset trade-times-total 0+ ^1 @) C4 I3 j! Z! T4 Q  d
set trade-money-total 0
& G, P& Q% G# |  Bset customer nobody
' T. z& m: o3 k0 W/ jset credibility-all n-values people [creat-credibility]7 E, e* d, B% Z2 M
set credibility n-values people [-1]5 |2 |( F& l7 n+ J2 }
get-color5 t( O& g. c2 Z+ ]

- \# B, c% p" [" V' Aend2 ~) J) l" G! J7 f. ^# q
. y+ A- D  m6 ~# e+ b
to-report creat-credibility1 b3 D; ?* J0 `9 D
report n-values people [0.5]2 U5 Q% g) e, N/ ]
end
; \! m8 R% K4 ?3 o* a; a& v) `7 v9 O" n5 ^
to setup-plots
+ z! ]1 B0 j3 ?7 `
7 C- s' t* y! k) [3 C8 P  gset xmax 30

; Y' {& }2 S2 f: t
0 E( G, y, r* H. hset ymax 1.0
9 W; W; J2 V8 ~
$ u7 Y* V0 h6 W1 i4 Z
clear-all-plots

& d, s! k3 D1 O: j7 w0 r6 L1 \# I1 q( W" o2 k2 q
setup-plot1
: V# |; k  a4 N6 H2 x; N
. m( t) j4 @6 ]4 j
setup-plot2

+ Q) Z/ Y! \! ]1 B2 C3 B2 K3 y# P4 z9 K! e( t" [1 }3 o
setup-plot3
& l9 z7 n( S: g5 y6 N1 v
end
  ~! m0 u6 s: m8 l# [+ `4 j4 j( C" }) t# x
;;run time procedures0 X+ F3 p4 x8 d7 ~# E% |
4 i! }' l( n  q0 a0 D4 F" W
to go
; v* I" q; p4 e# d+ q8 s% s
2 h3 }8 }* y3 q2 fask turtles [do-business]

% n  C# e5 `8 `8 N5 D7 p. zend8 Q! [0 E. o5 J- F6 \/ {

. f+ `1 y- M) V. l9 v, Mto do-business 9 l: e, w1 r5 ~# G( c
0 L( a" b2 g1 A! R8 P
1 {& Y3 O  I& V; d- S
rt random 360
' z$ K% D' b" l. z  r
5 `) @( G: O: I& Z
fd 1
# f4 }5 T6 P6 S, W
; G  l  K2 l0 i5 q% Q
ifelse(other turtles-here != nobody)[
; f+ c, o& m7 M! \; G  z! M3 g
1 ~" T; [' n3 K9 u# j
set customer one-of other turtles-here

/ a" w& @6 K+ ?8 E1 h& |- v
+ k1 U* y0 n: v0 P& b6 o;; set [customer] of customer myself

( {0 X1 W" U+ U. V
; i2 E9 f, o# x; |3 g4 A: Eset [trade-record-one] of self item (([who] of customer) - 1)
' m- B' l) h) R, ~[trade-record-all]of self) ^) p5 }2 d) U* V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 J6 _; Z& }& p/ o
. e  x  H. L5 X) W2 p: W% q8 nset [trade-record-one] of customer item (([who] of self) - 1)
3 t( A5 e$ u7 `( l0 _& N! y/ n[trade-record-all]of customer
0 b1 R* e8 c/ v1 o. e) J

3 T+ c/ }# m3 p+ ~; H& v% Lset [trade-record-one-len] of self length [trade-record-one] of self

+ Y9 E- `, f  w' N" T* L7 ~5 r. H$ Y1 @& L' M# y9 s
set trade-record-current( list (timer) (random money-upper-limit))

! l0 {5 U, e& [' d
& K( u# n0 w1 f' K& I4 D' d2 mask self [do-trust]
( y* N! _2 f1 s4 f. F& v* q8 V! [;;
先求ij的信任度: Q. |) a9 {+ @

4 [* j; C4 t, Aif ([trust-ok] of self)
+ X) L  k6 D/ |$ N% _;;
根据ij的信任度来决定是否与j进行交易[5 q) {# l' d8 ?; [1 ]! r6 r3 F4 K3 A
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 W- f1 ^8 {+ s4 F

9 a! G7 [9 s, k/ R6 ^[
; B$ `9 K# |% s( T& X
& {. S, t: R- w9 r3 D$ p. r5 r
do-trade

1 ]( r4 V3 I+ N( J6 P8 s8 r
) ]! g6 f7 k6 C4 T6 s' p3 A# A7 Y* x% {" r; eupdate-credibility-ijl
% h- g2 s- L6 H2 B

  ~2 G2 h- a! `update-credibility-list) j0 C/ x7 ?7 u8 s0 `' A$ |: e; Z
. @  z, `" @9 i

( X& i) J) v6 cupdate-global-reputation-list

$ z: k) Z- R" X( v% x9 m: G( P/ b/ A3 c" `# @: G  o' `/ F' F
poll-class
' d1 ]: ?% g- E4 z% n, w& K
0 H: @/ s7 b5 ~6 |: L
get-color

0 }: a4 r& z) E4 v9 R4 `+ M. p9 j
: c0 q1 o8 t. X6 }" E]]5 q4 D+ u) E' [3 w$ p0 ]/ x

: G& F. z" l+ `/ m9 ?;;
如果所得的信任度满足条件,则进行交易
) ]: _1 v+ i; J3 N5 z, r; R- l: l& e; g5 L
[

6 Z5 w; D5 t7 E2 W  ]9 U0 w; w7 |3 O  l8 A9 b( {8 W
rt random 360
4 v+ d. ]( N+ T8 i4 j8 h$ Y
& |& ~+ B$ I, X; z8 z% z
fd 1

: T" J1 B- E* f( _& C7 j
& V5 @2 E' X/ s4 N]

) s8 B; u/ A" M6 ]; O1 }
/ |% G. c' r/ g3 Z. o; @9 a  aend
* _( ?. ^/ R( t7 z

" G9 H+ l( f, f3 Kto do-trust
$ h0 _1 n, R6 P0 S8 [set trust-ok False
# u6 Y- A& K1 H4 Q. v" p& ?2 E
# E- N" T% y; P: r' W& g2 f% c

  x6 \$ O( T% A0 Y8 G2 zlet max-trade-times 0% b% h  p1 ]) ]4 S6 Z$ \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: U) r/ }& F, Dlet max-trade-money 05 f- O3 a; {# s  E3 E6 p& @0 v& [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 b- A* ]# F3 [1 A& r. S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% E/ w; r6 @$ `/ e& B& Y) O
' N! h' o$ s/ [/ I7 q6 J
! C$ q' N& Z6 y( B
get-global-proportion
1 f. r7 p$ U. t" g  B- Olet trust-value
: S% C- F! @. Z) C  Q# blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# I& n: z# _* W( z1 q, Cif(trust-value > trade-trust-value)# g+ ?/ `' p5 s& Z) c
[set trust-ok true]
7 w; y5 m; M+ [- ^, i( Dend
" C& s/ M* I& Z- @4 ]1 J9 b) ^  C+ V, i+ z8 H4 P
to get-global-proportion
( }* q  H8 ?$ B7 g& [" h; i6 `; Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& B, _0 _/ S6 a! i# q' }[set global-proportion 0]
" [: Y7 g7 j8 `' ^[let i 0+ z% O. G3 O( f9 y' [
let sum-money 0
' l: Z5 \: J$ \9 I6 f6 ^while[ i < people]
: U1 e  I) P% E$ L2 N/ @  ~- C[
/ k9 h  g" g2 {$ I. gif( length (item i1 b4 w9 i. v( B# c) p7 a1 J6 `
[trade-record-all] of customer) > 3 )

+ T6 }$ v/ ]! t2 s[$ _% L" U% j. s" |% [  D& h
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 H& B4 Q' G: k]
1 A% Q; W6 J2 n) t8 }]
% p$ E" S. I1 j! f7 _2 }let j 0
$ H# L6 m, o4 Nlet note 0$ v9 J; s7 V* }0 [8 _7 H
while[ j < people]
  }" o, ?. c- W0 }7 K1 E# J[# A1 v; m8 }2 f2 F/ ^) a% K
if( length (item i1 [$ Z5 O4 Y6 a  |
[trade-record-all] of customer) > 3 )
4 m( Y: H! Q6 c9 B! p
[2 t2 \8 Y) F+ }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! C0 X9 r3 D  h6 Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. P& L7 r( @9 s0 j- Y0 s% q, M
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 R& p' W- I# n/ a' c* U
]
: j, @8 K/ E3 H4 O& R+ z]
7 K+ u6 K& z  U, M/ q: Wset global-proportion note
! p, F% S0 C9 \1 E]
" N/ q% p; D" T0 d7 Bend
/ ^6 |) E8 W. \# e
2 _. _$ \! j- v" R1 Lto do-trade
5 u9 c8 k- \7 h. ?: r;;
这个过程实际上是给双方作出评价的过程
  {3 w, t2 N3 A: ^3 i1 J, cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" Q: D; n; P0 E0 }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 u9 e; m, y% N4 _6 U) |5 p
set trade-record-current lput(timer) trade-record-current) ~" X- Z6 K) I
;;
评价时间' l! H) J9 @' f8 b% ~# @. v. k- L
ask myself [
) i1 o/ a" @7 ~1 p! @) rupdate-local-reputation
" L6 m+ F( W8 w6 f: F7 xset trade-record-current lput([local-reputation] of myself) trade-record-current% {- A- t; y) t% `( k8 `
]
6 R) v& ?" h* s3 }1 h9 {" Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 r  B! u( ]1 z
;;
将此次交易的记录加入到trade-record-one
2 T4 F) J9 o1 M. E, L8 Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ l# ^% _% y' W) T! i" U: [( G) s
let note (item 2 trade-record-current )3 d7 u& n  `3 w! R/ i
set trade-record-current1 Y, E* W8 k$ {7 G8 G
(replace-item 2 trade-record-current (item 3 trade-record-current))
; ^, K) r2 D9 K/ W
set trade-record-current1 X# C5 q6 E0 n
(replace-item 3 trade-record-current note)
. \# s" j1 ~# R+ r2 j+ o& O' y2 O% Q' R* _6 v) `8 Z

- d$ L  z' V' [# lask customer [
: z* c2 S+ p/ ~) Iupdate-local-reputation8 `. b; ?' o$ `+ d
set trade-record-current# t1 x5 ~4 Z* ^  W8 a9 E" n4 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 @) R/ y! \5 l1 |
]) ?2 [0 @% |/ U+ W6 m

+ o7 A+ W9 l) i; Q

$ T4 R4 E) R2 \- E- Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 ^9 g% i, A6 o' c; I- g
( M5 Z, C; l2 i# i# G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 @/ E& T% T* O9 Q/ ^- t' ~
;;
将此次交易的记录加入到customertrade-record-all
7 z! d" ?2 x: f; c$ D) I9 ~; dend. @" ?1 e0 A1 Q) D0 f% w/ x

, [5 D4 K6 e2 V: Lto update-local-reputation1 I9 I+ }0 m- D1 {! d9 Y
set [trade-record-one-len] of myself length [trade-record-one] of myself( K7 J0 S6 N- a
* \2 F) y/ L" _: d8 `( y( u

: v* H, p  N, r% f5 };;if [trade-record-one-len] of myself > 3
# j! U" F! g8 T
update-neighbor-total
7 j  w1 }3 T, X  X- H1 n# _* K3 _;;
更新邻居节点的数目,在此进行* U  `: I# E+ V) U
let i 34 {3 j9 Z$ ^) ^8 T# w
let sum-time 05 i. O( v$ {# N4 a# a; T
while[i < [trade-record-one-len] of myself]
5 K- \3 a. h% e[! A) a7 P2 y% d/ p7 E* K( L
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ a5 C$ w& m. V" v" N( W' p7 }3 [set i
  K, f: a0 R% p: D9 t8 |# \- p0 B( i + 1)
9 s) d6 O. ^- P2 I2 p2 t1 T
]
5 d: z8 _9 y; {' e; flet j 3
8 M2 |/ n/ }0 s2 tlet sum-money 0, p6 J9 _( ?7 c9 S3 K
while[j < [trade-record-one-len] of myself]
0 _3 _1 `7 i" D: r# L[
- B+ y0 a9 E' D6 |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)# Y& p4 M  i: X2 c5 f1 `% j
set j! |: G3 a% S4 B
( j + 1)
4 Q% Q1 L% h, u. E; f8 ^* q9 r
]
  q! |. Y/ p7 i3 Alet k 32 F9 o8 m# s* F: k4 m
let power 0$ q1 k8 ^7 d0 [2 ^' E
let local 0
' `) @( x2 e5 n7 ^7 p. H6 jwhile [k <[trade-record-one-len] of myself]; O! C( u$ T9 t6 B  O
[9 H3 T( r0 C( i/ ~) g( F
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)
" y+ T( M6 e% N. o# L' J: n2 K. gset k (k + 1)' j8 ~/ a' ^# s" K
]
! J. ~" L/ k7 Y6 ?# }+ vset [local-reputation] of myself (local)7 G: s4 X; i1 N$ }
end$ ^0 ~$ \& ~$ I& O; ?+ ^+ c2 N7 E5 W5 w

+ Y1 @2 o- f5 q! P8 q: Jto update-neighbor-total# I% m' ~+ h( A7 b3 N% G

6 ]% R  ^& x3 w: C6 Xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 R2 X: x- L! `2 S% ~, {
' s1 p! ]* [! d  {+ [7 X
; n* Z% V8 r7 g1 a& w
end
6 u! `3 c% X. g1 }+ T7 Y
2 j6 p7 T% _" a3 S* Y) T+ Bto update-credibility-ijl
3 j) B3 t: M- t' R) t& O4 s
% x4 |/ m* @; s( \& ?5 ~3 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。
- T6 }( u# |' llet l 0
! a/ T/ ?4 p1 }8 D) Y" xwhile[ l < people ]
0 l" w* w$ n2 ~* }/ L% h  l;;
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$ Y7 g' C/ p1 `! G
[% T, W; g6 G+ W
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 W: z( W, h4 R- k% R
if (trade-record-one-j-l-len > 3)
: m: C! H! B/ p9 y* s' c[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-one5 D8 e) b, _# x$ j
let i 3
3 i1 A' l6 b( u$ a- `9 jlet sum-time 0
$ c1 x# u# R' mwhile[i < trade-record-one-len]
; J1 R4 `  x0 m5 S" ?/ A0 T[2 d$ B% E' `* U6 g+ ~+ H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* j5 q% g0 R! l/ E" G/ w4 T" gset i% W9 G- t! m! b# w1 I
( i + 1)
) |: G( j; @( [
]+ N# \% y4 ]7 {' f) d( O9 V/ k" K3 `
let credibility-i-j-l 0/ o" B2 Y# _! i8 E
;;i
评价(jjl的评价)5 k% o& k1 J5 x9 F3 n, w
let j 3& I! h3 s# R( F. X+ N0 b
let k 4
7 P4 P0 m. w( C& L$ u. C* swhile[j < trade-record-one-len], C2 a! Z5 O+ U* Z  F( U. l7 Z
[5 |1 ]0 a# ?; _4 R1 z+ Y
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% j) x- B: g& W
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)& |% M3 X( O; W; L- L
set j
% G1 c4 h. C/ W% b0 W( j + 1)
; ~8 [9 |2 T0 p9 J! z9 {0 n
]& B& d: t5 y/ c7 y# I3 F
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 ))
. H$ p3 _1 w; q. @1 H7 p$ b6 `. h  t5 w
' O* g# a+ H& i/ e# c# Q: c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 K8 k5 q4 y+ |& D2 I3 Y;;
及时更新il的评价质量的评价9 H/ M6 l8 e; t8 Q- }# w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ B6 Y- B7 ^8 e! Q: M' E
set l (l + 1). j" R" s8 l, s' {4 ?' w
]
+ ^# V- b, N0 D. ~$ V4 send
& _8 O" y3 Y  I- j& l# N7 c
2 @3 X, d9 @3 d% Xto update-credibility-list
& ?& T$ ~( {0 b$ O) M- [2 B7 \let i 0
8 T& ^1 u' r5 v" O0 {& i+ L. Owhile[i < people]* }% q/ E% R9 U, a5 j- c0 F) U
[
& z& F8 I6 E6 Zlet j 0
  s9 E' O( c5 i$ B5 _let note 08 ~: I* x1 ^$ S4 o. }+ u
let k 0  s9 v, ~1 K( A& t2 E
;;
计作出过评价的邻居节点的数目
5 W8 J/ H+ H% ?: p% `while[j < people]8 ^! B. N- b3 X* S7 @3 q  u! }0 p
[
& @# b, J$ a, f% b8 `, dif (item j( [credibility] of turtle (i + 1)) != -1)2 p. _- Z& k0 _
;;
判断是否给本turtle的评价质量做出过评价的节点
* p+ C1 y0 G$ E9 A: i" @8 o7 H4 @[set note (note + item j ([credibility]of turtle (i + 1)))
# d: _8 J: \! ^( a* t;;*(exp (-(people - 2)))/(people - 2))]

1 H, G0 F9 `2 rset k (k + 1)
7 f0 F" R4 A! m8 m* p' h+ U6 E]
7 o  U2 J8 t$ v( `$ bset j (j + 1)
9 n. I2 e2 v# n]  k2 x3 W% [& {; N. U( V
set note (note *(exp (- (1 / k)))/ k)
! ?# g5 l, T6 c5 ?3 aset credibility-list (replace-item i credibility-list note)
% }' D+ h6 J: A) Bset i (i + 1)
' a5 l6 W: h: u  K$ d8 ^]% }& e  w+ U5 D6 F' \* r
end
$ {! Y$ a8 t& a' E! ]+ R. t' r' Q. W2 h% h; L2 ?
to update-global-reputation-list1 s. D# r9 X. b$ u+ r
let j 0
8 u" h- G) h9 v$ x& S; G2 Twhile[j < people]$ _7 N8 k8 E+ P7 z3 a9 U5 `
[
. u9 M! E7 e: @4 a! ]! Wlet new 0
0 ^6 o% J& o; C/ K;;
暂存新的一个全局声誉4 U0 ]) O1 F" `: p7 _3 V( N. B
let i 04 I2 e7 ^) ~7 L% }# S. `  K5 P
let sum-money 0
2 ]" {9 p; R7 A, M( v8 B/ Mlet credibility-money 0. a$ ^( Z; n) j5 C/ T; |  l
while [i < people]& k8 H$ O6 s  R
[
; I8 M# p% \/ zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). m( N: T) q0 v! z, g: U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ e$ ]0 ^9 v5 Y. ~5 lset i (i + 1)/ A* [" i% ]0 M# m
]0 n, ~5 s. Y) F. f% ?5 W/ k% B
let k 03 W. f" ?+ i+ O3 h( i* V
let new1 0
6 _5 U, M% |2 l/ nwhile [k < people]
$ X0 ]3 G9 t* h9 I[
& V, w, D4 ^$ j  \, N' ~7 C. Aset 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); N3 l! l% w6 l2 u7 ~( i" o
set k (k + 1)5 e& h& q' K3 u. O/ E
]
6 }9 D0 A! x8 c* `* `- x$ `4 _1 [7 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 Y- J# Y2 H/ o% y3 Zset global-reputation-list (replace-item j global-reputation-list new)
4 p5 d1 D" |4 p- \' v" Vset j (j + 1)! m7 B* O" [, g
]
0 m2 p" Q7 E( `6 U9 Pend# Q' U* M# b$ l, z3 y- [3 b
3 t$ q; P  C' O- `8 Z
: ~6 `3 g! j1 n9 O, v& `

. {: C) n8 b# u2 Tto get-color
, E/ T( e" p" e. o) m5 L$ \
6 Z; V( ]+ Y( D' H" cset color blue
4 S9 C% I7 `$ p4 u$ @
end: d3 p( P; z8 L7 F

/ h  }/ E: H2 \0 p" N! ato poll-class5 _# x% \5 l/ C1 S. ]7 Y! S
end
  S+ ^$ h. m/ {, [/ V5 f( @+ L# m. e. O3 N, i& d. y/ i
to setup-plot1# l8 S3 n$ i/ w) \3 {8 f; T4 Z

+ o( y7 }4 O; w: Z* ?  [4 `! jset-current-plot "Trends-of-Local-reputation"

; ?% H* Y% W8 f' h. Z  Z, x6 l" f/ A: M" g4 u/ A( s3 L
set-plot-x-range 0 xmax

2 L) ~/ \3 c, }2 [" b9 O
3 G# @4 ?! p" E; w8 V* wset-plot-y-range 0.0 ymax

+ p, Q" ^7 E( r( @2 L! zend
3 U- k1 E, @) o* m5 d# _- L3 ?" i, w" M9 ]* q4 |5 N
to setup-plot2
. `% U4 @; G/ i* R/ [4 [* X" G
4 N+ F4 F7 _) K* D6 c! Z& Aset-current-plot "Trends-of-global-reputation"
# l1 s: R3 X0 K" m! b' s' H: Q$ [
7 ~- |7 E) U: X7 M: \! m
set-plot-x-range 0 xmax
2 Y. o) q; \, f. \2 E

' E9 O! N' a. E3 kset-plot-y-range 0.0 ymax

+ {# Z8 A- H) T; l2 r- O8 P. wend
. H4 l; S. r0 R& t: a- O% g  {2 n2 a! w
to setup-plot3
' c& b3 M/ Y/ k- b) [$ d- B, s6 P* m, C2 {% O6 ~7 c( S) V
set-current-plot "Trends-of-credibility"

! n% p4 ~" e0 C6 C1 Z1 |8 x. R
  d! h& a* Q3 M; u9 s, [9 sset-plot-x-range 0 xmax

! R' ~7 \& U; @+ `; l0 ^. n9 y( C$ t7 X  a
set-plot-y-range 0.0 ymax

) g- ]: N; `: Wend5 @  i) A" d) }( @% c6 x7 W5 }& L
8 G$ ^# J" r# l
to do-plots' h5 I! N: E( ]  i  s$ I
set-current-plot "Trends-of-Local-reputation"
( w* g0 i1 e, Jset-current-plot-pen "Honest service"
7 ^9 r( E8 J# ]end
4 p. W+ s5 t/ X4 a' i% L: t! f
$ f2 L) e- w- {[ 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., O2 s( i2 i( H6 G5 \$ J! x
: @: i* L; G% ?) u) {
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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