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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 v( U& ?" |7 b7 {5 [$ Xto do-business 5 ^5 N# N5 C7 R  M' l
rt random 360! c% l4 C3 A5 v  u% Z3 k2 C4 o
fd 1% n- X% y" |2 H2 }; v% B+ x
ifelse(other turtles-here != nobody)[
* p2 @) c3 M$ X) r   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 G9 T/ O5 N0 n. ?3 `   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! `+ ]3 ~: w4 Y  ]' l! p4 [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* H1 H8 Y& q+ o& H/ `  Y* ?   set [trade-record-one-len] of self length [trade-record-one] of self4 L, w% K: e& {; h+ g' Z! ]
   set trade-record-current( list (timer) (random money-upper-limit))3 |1 c! @+ q2 x( z$ B% f1 J9 x

  o' K: A, }& |7 x问题的提示如下:
4 g7 U8 ]! {7 h( }5 J, D( |# F! k
' K0 l2 u& b2 y. k& verror while turtle 50 running OF in procedure DO-BUSINESS7 f9 S% C" v: w8 V
  called by procedure GO
2 D' {$ D( F) @7 WOF expected input to be a turtle agentset or turtle but got NOBODY instead.8 F. |5 m8 G1 p+ k; P
(halted running of go)
$ J+ N8 ]$ \+ {" }9 N* o3 p4 R
4 D2 k6 i, N$ n( F/ C. F4 p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~~2 o' y3 O, P* L0 k" o
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
( k9 x1 ~2 y& S2 F5 Kglobals[& D# y' t* F# Q( T1 K1 o: g
xmax
; Z/ O2 }9 w: ]9 ^0 ~+ @8 ~ymax: H! d- t1 T3 k8 b& e
global-reputation-list
5 z& A# G/ ^: f7 R7 L+ K2 V- l. Y1 }7 Z- H9 M2 I5 A
;;
每一个turtle的全局声誉都存在此LIST
) p6 T7 F! a( _% Tcredibility-list/ M+ o5 M- s2 c) q
;;
每一个turtle的评价可信度
9 Q, i4 g1 s# `* Lhonest-service
+ V' O6 t/ S) k$ }  lunhonest-service
1 u& n' q9 {) Q) F, N' noscillation
* M2 e* _+ o7 s$ u3 b$ ~6 lrand-dynamic
) G# C* m' ~" m# m* H: a/ J" P]
- P0 R! h# w4 E+ }' Z) `6 C; k; k* K8 S% K4 r  X
turtles-own[% P: C8 u1 D$ x; B5 V$ r
trade-record-all; r- U6 n3 A* H0 v: t6 h' ~% h
;;a list of lists,
trade-record-one组成
  x. g$ U3 P( ~3 P; |trade-record-one
' U" c8 {7 s. r( d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* j+ q' |  Y% T, Y* g& H
% W' J6 l8 a9 u7 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]]
3 Z7 t# z! `6 L5 y, y: Ftrade-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]
% f2 F$ Y. ~. ~% G! U7 ocredibility-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. j5 ?- l' U( k0 {( d$ i
neighbor-total, S) T& l; Y# j( k8 s) f
;;
记录该turtle的邻居节点的数目
* j6 N( K# b+ [( A: n# Dtrade-time
1 M  v4 q6 F" [- P* d;;
当前发生交易的turtle的交易时间
5 O/ M3 \5 t2 G$ {/ i$ Fappraise-give
( _  V  Q/ X% G8 X$ N5 ?4 l;;
当前发生交易时给出的评价
2 W0 Q6 J& l2 z3 n* z% vappraise-receive
8 x5 O; f5 t' ~$ C;;
当前发生交易时收到的评价
3 X* G7 [) Y7 Nappraise-time
& ?* O8 x: q0 a, ?2 g;;
当前发生交易时的评价时间
6 o$ q4 b0 H/ D8 llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 \# {+ }7 q/ f  r5 W0 c5 b
trade-times-total
1 ^) C+ ]1 s: ^" N3 ^;;
与当前turtle的交易总次数
: @, i+ r1 j: u. I# Ptrade-money-total3 P6 k+ F2 a" v7 ?3 O! l9 Z; a; |
;;
与当前turtle的交易总金额  E' @( f9 w4 X$ X1 `. W
local-reputation. {* y1 s; g; ?0 j
global-reputation
4 K5 a6 c6 v) j7 jcredibility
, s' Y6 ]! K3 b;;
评价可信度,每次交易后都需要更新' c- f% [5 g$ K7 t
credibility-all
: n- d5 W8 M) i;;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 c+ Z& h+ t  i% D9 }4 B
+ m5 H2 g4 k6 d- _;;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
! G! b7 b# m# {; I# gcredibility-one
" |0 c4 k# U! l$ Z4 ^% u( q- v$ [;;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people2 B9 F' h0 {( ]: t7 R( }4 x
global-proportion
$ Z& O* Z% }2 n. q% Lcustomer
! A6 A+ M, T, @7 t9 Zcustomer-no
( h6 }; L0 M4 K6 Q7 |trust-ok' O9 Q5 B5 B" T
trade-record-one-len;;trade-record-one的长度
2 ^- d& I/ T8 ^) e6 M. q]
& P" a" ?- e7 u% w; Z6 J
1 Z8 G2 G5 @: l' ~;;setup procedure5 E1 w/ \" s  t4 m' E

' w' P, ]2 m5 Q! u  K# Ato setup
  l; f7 N+ ~& ]$ `. c2 H; f* Q; I6 Q  Z7 n
ca

) _" l0 t* i* O/ @$ Z- F, G; p
! F9 V+ J8 B9 P: H% T: m4 ainitialize-settings
6 w  E  E$ t: T& O

+ k" d# |. s( I2 o4 f6 _crt people [setup-turtles]
5 e6 G' {/ d9 }; c: y" o- \. s, G
8 [' ]/ D, J9 ]  \
reset-timer
1 K+ Z- X: E- J) p2 ^0 u# w% b

5 |; H, f2 t1 y- b. L; n0 n# opoll-class
' i1 P/ R7 {; T2 X5 K
# ~; B7 W" v. L# o" T$ M
setup-plots

* z6 S/ H3 A" o; W, X1 w) c" O0 D" l9 A  [1 V
do-plots
. M  U* c) X$ z9 t& O
end( v( ]# Z2 }* J5 r' _

* v5 ^9 K4 K6 E  c6 m4 m8 b# i/ kto initialize-settings
# s  b1 ?" F( B1 N* t7 c( B7 E" Q7 }& C: d- t; v& T
set global-reputation-list []

8 H2 @2 j, w9 [; M1 p8 y- {8 n
- }) @- Z0 u& F0 _( Kset credibility-list n-values people [0.5]
+ q( ?) E# I' i0 R
7 \; Q, `5 P2 R+ v
set honest-service 0
- w' I3 @& V0 I: k2 C/ a

9 l) G5 c  v; ]& Kset unhonest-service 0
: q) n! g/ M" W& D

+ ~; A* v/ Z; V' v& [8 {" kset oscillation 0
1 J* d3 k) W  Q3 P# Y% u

- z/ c2 P! G; k, ^set rand-dynamic 0

% G: ^( t, |0 B& Iend% H9 Z- F& I1 n) j% s- @, H  d
& d9 x! ^/ o# k- U
to setup-turtles
! `) v! X, C+ s! O  oset shape "person"
$ {, N% y! Y" R4 g6 qsetxy random-xcor random-ycor
$ g/ U# N* c9 Z) K# u6 L. [7 _6 B. Oset trade-record-one []
- i, C5 O( l0 ]1 D9 O4 b

' G, Q7 B( H/ S: y1 Y. I6 Tset trade-record-all n-values people [(list (? + 1) 0 0)] 8 q) r& \# y0 S9 ^& V

' P- `! y  B  b, I. wset trade-record-current []
& e) o/ a9 o# U) a1 nset credibility-receive []
4 \$ ]! t& [: R  D' kset local-reputation 0.5
0 k8 A4 y. i( F8 V! c) r; }set neighbor-total 0
) L2 _( J  q/ N" D( k7 dset trade-times-total 0
5 t1 k6 e7 f" C: K* ?set trade-money-total 0& e! H) ~, ^' v, p; F9 G" m! M! M
set customer nobody
3 r* |% L" W9 jset credibility-all n-values people [creat-credibility]
! U# _; G$ d! W9 V2 jset credibility n-values people [-1]- A1 l6 R% c1 E7 d8 l
get-color
! Z3 C& }0 m) V7 _

% R3 g# Y" x9 B; nend
( A  A" o1 g* u( `0 b8 o# w* m
! l1 H# |3 N# F! x  Nto-report creat-credibility
7 _. G, H1 w& y8 sreport n-values people [0.5]9 d& s2 F; D, f) T6 y
end
8 {) Z6 Y; E7 h' \# ]* W" z* B9 p; Q
to setup-plots
0 g6 }& i$ P# n5 X. W2 y, ?/ B; z: d4 i) V+ W1 \: J5 J
set xmax 30

8 ~* X$ d' Q( O7 D" r: V3 J* Z: o: J- \
5 E2 S7 U5 W/ d/ u) A* Gset ymax 1.0
" l  Z$ `% _: S% \4 o% h
+ ~8 _& b. q" T1 @
clear-all-plots
) i0 n0 s* ~0 ~: }% Y# s
& J( b" N9 \& @, a& z" W) |* p
setup-plot1
6 Q; h* A: x0 U- x: M
2 \- W0 }" s+ }& ?
setup-plot2
1 C  y7 x4 ~, F$ F. I; w7 q2 y

. o1 L& q  O5 y6 I! L" s) u! s5 rsetup-plot3

* @  n( }' D8 k" Y% Dend: i2 h5 Y. ]7 Z0 f( y' C
. u, Q1 ~" w2 a9 B9 J( o
;;run time procedures
9 ?$ q9 ^5 `/ T# Y$ O6 k- E0 \8 w! z: B9 j5 {! ~7 |  Q4 @' h
to go& j: I( O5 L" R: V7 k8 M
% R. `8 R2 c3 c
ask turtles [do-business]

4 p4 ]5 G( z0 Zend1 ^* N5 a8 j/ b1 H: s0 i& n
9 ]/ I' Z1 l% N; X: i0 {0 N
to do-business 4 m* Y4 g* d4 c
* f4 U% L6 i) Y9 j0 G( ~
1 {/ d- u9 @* |/ f6 Z3 K0 G
rt random 360
( w  `( g& c3 q" k

) o# w8 v) E) y6 w+ a+ ?fd 1
$ k" z3 p. ~) _/ x' p; F& P% U

: `) i6 x4 i! [' i) O0 Pifelse(other turtles-here != nobody)[

; g& B) O6 D2 c7 u: X, r4 E8 r- I( b  ^& q1 d9 [$ P9 D9 Z; q
set customer one-of other turtles-here

* t+ {8 x, |- _; N5 E# q! g
; e' @  R( {* l' S) Q' N;; set [customer] of customer myself
; T4 j5 P. v2 x! [# [1 r2 f
6 i. k, r8 M* g$ M
set [trade-record-one] of self item (([who] of customer) - 1)
! [" \2 @$ O" e5 V! B( ?[trade-record-all]of self
! G4 Q- U- S# [/ y( s- S% V;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! ^6 G. Y2 w  c, S: Q4 A; E
( D1 {1 O/ L1 T8 d( s
set [trade-record-one] of customer item (([who] of self) - 1)
5 o  d1 K( }, J  L# i9 c* E/ i3 \) a[trade-record-all]of customer

1 f% U( z* q/ {$ C, D7 i( |+ O1 e* D7 T4 `; t/ J4 g1 d
set [trade-record-one-len] of self length [trade-record-one] of self

2 p2 f9 C8 b; D
& j* v& _: W, _( B: hset trade-record-current( list (timer) (random money-upper-limit))
  X+ j7 [/ K; Q2 x

: H) c! W- k& m. I5 N, K# iask self [do-trust]! t/ V# G- t+ G8 |* Y3 e
;;
先求ij的信任度
' H5 V+ [( b5 ?# K
$ H4 _0 A" b; P2 W% l  t/ Xif ([trust-ok] of self)/ ?% _5 l0 }  K/ u2 G9 w  b
;;
根据ij的信任度来决定是否与j进行交易[  ~6 f) h6 Q" t3 r( T, u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- x9 A, ~4 `' S3 |/ c4 V  P! X
6 f9 w  w& k9 n[

2 z- G9 ~+ y& G0 U) c
8 H  e' _0 a2 y1 sdo-trade
/ W1 w0 W: ~* m) }9 B. k
5 |$ F5 k6 f) f; n0 f
update-credibility-ijl

4 I  m7 P" `( x% g8 T, m9 H2 Z6 H& O
update-credibility-list2 n" _/ E9 {* Q4 ?1 W  V1 i- s

, ^4 @# ~! n! G* ~" Q2 l
: P. [" s) ~$ R/ B# supdate-global-reputation-list

* s. Z* \$ S, s+ o, d5 @
& m% e) y6 L& x& R5 m' |poll-class

- D9 z3 C7 g$ a/ D$ Q
4 B5 n  Y* X. B9 @, J9 l7 a" R' w" xget-color
7 P7 x! m6 _. O. ^9 V( W

* T4 U& a: @( m; ~% b, G]]# P2 Y9 _1 e7 W! q8 ~8 L
" i3 l: w5 }" ?4 a' W6 f+ {
;;
如果所得的信任度满足条件,则进行交易2 I) d) C) v' g* d9 \3 A( u
1 Q/ X$ |' W8 m# R  i
[
; @. {! x  l8 c

& J( L0 z/ I0 d! U: }rt random 360

1 ?+ k6 W% ]; g5 j, [! Y8 `
& t) H/ X( C- S: h' ]: [: gfd 1

4 j+ v- t! z# L0 J. j5 @
+ z4 c6 y- k0 q: A. l2 D0 U]
, H8 B# a+ a5 B0 i+ b- u

6 _  Z% m8 m/ O' Qend
( H% Y6 E: C9 Z: Q% B

/ a, T. q& b% L( bto do-trust , E5 j. c) T3 E5 j2 |; N
set trust-ok False
- E; i; S1 q8 i7 ~3 g& Q! V. O( R: z

6 m8 R7 _2 Z4 ilet max-trade-times 0  H$ e, r( `( }2 C# I; q" _/ ^1 E4 k. ^% [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ m" W! S7 }% N
let max-trade-money 0$ L5 ~: \: L7 ]* J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% Y& ?& v0 }' r# L) I9 R: [6 [let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( i! Q# u) J% Q+ |( }2 C- O
7 N3 Q" B* |# M. A

$ |4 T9 p( @6 P1 oget-global-proportion
- j% S1 {3 h8 u9 G4 f+ h+ i# u" elet trust-value: c6 D9 o$ Q+ w) ^3 c8 U4 S$ I
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( ]' M  `. T6 q% n/ W0 G( V1 p
if(trust-value > trade-trust-value)
7 z5 k( K, G6 ~[set trust-ok true]
4 c+ Y, A) X2 wend* D( `* z6 m5 v; Q9 v$ K3 s* Z

+ x1 |: ?& b+ S& G# Wto get-global-proportion1 q3 q0 x2 |2 B) c# t) l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. ]1 M9 c+ W0 b7 @: O: }7 |3 Y[set global-proportion 0]
' g; K. |3 d7 n0 P  V1 j1 h2 e# a[let i 0
- Z9 \: d) R0 Tlet sum-money 0
' g6 P: k# G) B0 m+ U! |( t0 Bwhile[ i < people]" y3 m) a+ D1 S" q
[
5 ~: [. g% ^: t/ D6 gif( length (item i
6 k% [. x  I9 x5 t: U" f[trade-record-all] of customer) > 3 )

+ U( ^  Q" o: V; \[1 q9 E. V" j7 v1 m" N
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 {' W0 {* m9 q/ L
]# X# Q( p) G, ~, b% _$ C( a/ e
]4 h$ a. N+ v6 s) T6 O( f5 f& o/ G
let j 0
: x  L* Y, m5 M- L) T, p1 ulet note 0; G1 `% i, v  M8 z% Z8 W
while[ j < people]  ^+ t7 V1 X% i+ u- a
[
5 a- }4 |7 A2 X! V* v5 H0 }( s; P7 u% iif( length (item i7 x1 G& j; R1 [5 L, D) {* f7 F
[trade-record-all] of customer) > 3 )
8 G2 m4 v4 y/ L7 O# K
[1 y8 f% O* J' r6 _) \) h% D( V
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* O' R' c' o! ?5 q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( h' F3 Y# h* t0 d! X4 M
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ k) h' b8 J& t, Z* a# o8 u]' E7 n+ O' j2 o  L- R
]% i0 Z) \+ V1 P+ [. x, k1 D
set global-proportion note0 ~: Y- H6 y; I1 r& S
]
$ P+ M+ l: A; j+ e; F  lend
0 `' H' H0 Q4 b  s; |( W  g/ |: y) o
" g, m$ d; U' g* vto do-trade% N/ X' J% q8 }+ f3 k3 K2 }2 l5 m
;;
这个过程实际上是给双方作出评价的过程9 c' B1 a1 I/ s" W7 o+ {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; L2 Z3 n( {8 g3 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# Y* L" n9 v$ H7 _
set trade-record-current lput(timer) trade-record-current4 I4 n$ Y3 P& b3 U/ H5 Y
;;
评价时间
0 [4 {$ D; C" w8 G) u9 P/ |* Iask myself [
+ m) P' }4 z' q* ]5 lupdate-local-reputation$ B9 {' V& v1 |& l1 J  d, ]
set trade-record-current lput([local-reputation] of myself) trade-record-current
6 Z' ?% U' W6 c; N1 W# p1 s: E]4 ^1 \/ s8 g; M) Y; P$ P, T. u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& @0 F$ }* f' d3 \" D, T% c& I;;
将此次交易的记录加入到trade-record-one3 A4 k# P" h3 W. c! `4 f3 |! M
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 H" c1 W" y! G/ U7 E+ Olet note (item 2 trade-record-current )' P% v+ `; b8 w, S
set trade-record-current
8 u4 v3 i1 y3 t: W8 Z3 k(replace-item 2 trade-record-current (item 3 trade-record-current))
5 A0 p* Z3 n" r+ X
set trade-record-current, Z# D: N' ~2 C3 M) u, G8 T
(replace-item 3 trade-record-current note), [$ P: E! K9 k% ^8 Q' |" t& F

: V% g* h0 E- b5 I2 j
/ }7 y/ S" g' J# z
ask customer [4 o9 W9 A  K5 ~. [$ r# P! W) `
update-local-reputation
: r2 J" ]6 @7 r* |7 r+ m0 Lset trade-record-current$ b6 j5 X- N& A3 O, z8 n. d" c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ x8 P4 o' G7 N+ z% Q  C# F
]  K# O+ Z) F9 @0 W% s( y

) X7 ~8 ?+ x/ R5 T
) l) J% S/ o7 t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ j4 R5 [6 i* @1 I' _8 l0 s, ^
0 I+ h" v7 v4 A+ E
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, t4 L: W. N4 H+ K;;
将此次交易的记录加入到customertrade-record-all
1 j( D; O' i, J) r6 `3 Cend; G& j0 E- Z/ d' H  v* o. g

# O/ Q- K5 t7 ^6 K  x1 pto update-local-reputation( z8 D! l, m2 X  d1 \
set [trade-record-one-len] of myself length [trade-record-one] of myself1 U/ E9 J& w; w2 W2 ^
% {) u' z; u. _" x0 M6 K1 U9 |
4 U( }& ~. f6 L5 K9 D, \
;;if [trade-record-one-len] of myself > 3

) l7 E8 i7 ?, \7 k! b4 nupdate-neighbor-total* r# c" U$ `, I8 r) e$ n/ [
;;
更新邻居节点的数目,在此进行* M# `0 Z# `0 D5 q
let i 3* l, H: M8 o& B* Q$ q
let sum-time 0
+ {/ X3 t& g) e7 d) K1 Hwhile[i < [trade-record-one-len] of myself]0 W: w* ]6 b& r
[
- R; k5 m, m1 d- v/ ]1 {- bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% I- X) q) P* A* F* Sset i
& O- w' A3 {$ l" k# ^2 D( i + 1)

. o9 S  g' X4 E1 w0 z]' _8 j* P7 ^9 \9 f$ I1 I: E
let j 3
* P/ l+ |" Q0 I( d- z( k+ l$ vlet sum-money 0
8 x7 B% n, K$ s$ ~$ uwhile[j < [trade-record-one-len] of myself]
& {$ F: D4 o) a0 [7 M# I' T[
0 C. e7 R3 X& o. O9 M& i4 h7 q: Lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 J4 ?7 Y, h; Q; C  g! E) K$ ]( Lset j- `3 W1 D% G$ Z% _* p3 R
( j + 1)
- r% r* G- B' Y/ s; K. s8 Y" o
]8 S) L) y# F, A, z4 z8 \
let k 3
1 y2 Y; Z# k& s+ Y" {* Slet power 0! K6 l( I( w4 l$ v
let local 0
+ @/ t" a. K" _( A  j, l, G: Swhile [k <[trade-record-one-len] of myself]. @- m/ j' g' M- b" f- Z# e" X
[
+ i$ `# `- m3 S, hset 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)
- N; W& G) u3 W# P. b4 |5 {* Wset k (k + 1): o7 {) i  }: b
]; A! I9 v  A/ U& X* \5 Y
set [local-reputation] of myself (local)! {( N9 W/ z4 Z7 O
end
$ T; T  x4 Q% ?! U8 @! ]3 Q2 N) O  Y7 ~( [
to update-neighbor-total3 q* }; |5 R5 V& Z* i
- f. s7 S1 P  @) R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 @; A# o3 m- Y) n/ G" k

# [) |  e0 B0 A; R. A
1 C' c; S0 c3 d/ G; f9 M
end
8 P# V# B+ B& {: v& g* w$ N+ y% c+ s" [7 w
to update-credibility-ijl
7 u$ ^$ Q& V2 B& M+ o. t. g7 }5 ?  b$ \
;;
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。
" {3 u/ w' ~* k; a, D) d' J; ]let l 0' @3 `! K1 {5 y/ ?8 h; O
while[ l < people ], @  }  O) b. E1 _* D+ j
;;
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; H, |6 G2 h# g) b& l" N
[
' u9 z; N5 s* S' j7 X; hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) w; H8 Q, a% A: H% y  ]  q9 X
if (trade-record-one-j-l-len > 3)
8 f" M& I7 Q8 e8 ]2 y[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-one2 [# C$ H% F/ G2 `5 k9 f7 k# m% a
let i 3+ g. N9 `6 ?& x8 _& N/ ?" Q
let sum-time 0* j6 w3 `; @6 v: D/ i4 T" {
while[i < trade-record-one-len]2 u1 w* e9 f# e9 V3 J$ D
[# c2 ^7 H5 q! q' d( Y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- x3 R- q- p: t1 Z* Z1 y( {set i
2 Q5 b4 G6 ^4 @- T  @( i + 1)
2 J1 j5 m/ j* M8 U
]
4 d) i9 ]: O) G* w, Clet credibility-i-j-l 0+ H; P/ w7 h( H0 C5 z2 p$ D
;;i
评价(jjl的评价)
# @0 {* E  p# z# a6 Z# H+ [let j 3% \! r# M7 ]% F" z, p# Y  f6 ~
let k 4
6 h7 m9 F8 o9 Uwhile[j < trade-record-one-len]
/ a% ~9 v4 i" E7 B' V0 C/ e& m8 ~' i/ e[
5 |# a) p% i3 qwhile [((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7 D: |" g. m) c$ q; _( F% 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)- w3 {+ ~0 i0 h8 W3 D$ i3 R
set j6 j$ M5 ~) @, }
( j + 1)
1 n9 v. x, U$ m& @% {7 ^& \
]
& l4 c5 z( \6 r) K: P2 c4 o3 ~. ?; ]& L' ^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 ))2 N0 l7 ]- @' @3 Y+ m
$ d/ j7 Z* g) r) `: T
0 x6 E* Q( g' w! `) R- G) A: ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. b. @- D; Q. m  p% d2 k4 C$ @;;
及时更新il的评价质量的评价7 j! Y" \) b0 k! d: |
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 S" S3 Q$ k5 m* [# h( k
set l (l + 1)
- Z% \  }* I/ w3 }0 G9 \/ R]
' `$ `% E4 x. ~6 N/ P2 jend; R& A( A: I! J2 _

5 `* b! O# V7 |6 W" `7 L; b5 Mto update-credibility-list: f1 z2 V5 ?/ @$ W$ K
let i 08 ]. s4 p# m7 T8 E% J, a+ o
while[i < people]  v+ }7 @6 i+ ~3 m* H
[
! n% m: x: n6 M$ klet j 07 P% Q0 Y( H* {) J; K: d  }$ l
let note 0
2 T  ~& u; G) l4 u5 flet k 0) [5 r1 h2 q- _* h9 v1 \  j
;;
计作出过评价的邻居节点的数目
. O( G( r8 Y" {while[j < people]5 f/ q; B. a! Q7 f3 A8 P/ w" ^
[
' h6 u2 n% u" Mif (item j( [credibility] of turtle (i + 1)) != -1)1 T9 [& O' x7 \& a, W
;;
判断是否给本turtle的评价质量做出过评价的节点* B9 ^( Q1 R: C, H+ b9 V0 Y
[set note (note + item j ([credibility]of turtle (i + 1)))1 D% a, r9 q6 b5 ?# D
;;*(exp (-(people - 2)))/(people - 2))]

( m2 [: E  C' I/ e1 s1 nset k (k + 1)
; b5 w0 g7 r# ~8 ]- h5 S]
5 P2 t) c! }& r( o1 S0 C6 A* Iset j (j + 1)
7 H/ P0 w+ F6 c' `7 M* Q) w]
3 R3 B2 [! ]! e- Z! [# hset note (note *(exp (- (1 / k)))/ k)2 c0 ?7 D) \% W6 j' e+ n3 k
set credibility-list (replace-item i credibility-list note). w6 S3 Q; M9 C! s1 x, R6 p9 W
set i (i + 1)
9 V& l/ {  b: Q7 O+ C' j]5 ^- Z* w9 R$ k* m7 q& p
end1 m( o' q' v, J7 n" r; M7 M! P% k
7 j( z+ G; S; |* G
to update-global-reputation-list1 f! U2 w; E' S
let j 0- \  z2 f+ v" q/ \
while[j < people]
' m! I/ s% R) N[
3 Q3 D1 \* T: K: y- R; D2 D! xlet new 0: L, `# y! p$ ]
;;
暂存新的一个全局声誉
; y& _" Q' X" i2 B. c/ w% M7 ^) zlet i 0
* L2 ^! V. j2 @let sum-money 0
) w- @  `7 j$ w8 c2 Jlet credibility-money 0" s$ j8 ~: m$ h" k8 s
while [i < people]5 j+ H/ I0 v) T4 y' j* A0 Z) d
[
+ O6 h, w. y) ?. cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); {- ]- x& {% e* D, i3 M
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 u! a7 a& F6 l: N6 ?" W! t: }: Xset i (i + 1)* [2 C+ a# W' u1 Q1 t( e; S
]* r4 A* q3 _  L
let k 0
- q# ?' W* N+ b  ^9 y: C/ d; Mlet new1 0- W+ Y: B8 r. J
while [k < people]$ o6 k1 I* E$ R4 B! C! G7 l
[3 D% _3 L: H9 W- H5 u! d& a
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)
3 S5 i% {; m: X% i) H. hset k (k + 1)
* o  x0 G7 a2 |' e- k]
, p$ `7 N$ t) q* [7 wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + Z; J8 p4 z/ l* Z
set global-reputation-list (replace-item j global-reputation-list new)3 \4 j9 F. x; r4 b% n  M
set j (j + 1)
. `: I# F3 B! n. F  R" O% C]% y% @9 I( f4 u; C
end
! D4 N3 L- V  ]2 ^3 a3 T* g$ I6 W
' c$ i# A" a( f% F, r5 x% q6 {& w# L) p

& b( N, j4 C( l( A; Eto get-color
9 u7 m, P. f0 S  T& W+ H: A6 i9 c4 b
! B+ @; w! z' s4 h. pset color blue

7 y! u7 H& r% y! X: i% ~end  _7 \7 f4 _. W* {0 {+ |

+ m* v+ }4 J9 Bto poll-class
, |. \# a4 u* p( y1 ?5 d& xend
6 O" S% m9 o2 T- B
# [$ }6 R. ^& Z5 d( yto setup-plot1
' p3 C& N& |+ E8 I" P/ ^7 P9 z5 r5 Y( f6 \0 E% n2 `3 E. I; h
set-current-plot "Trends-of-Local-reputation"

7 ^: `8 l7 {) s) Y& o' @4 {; P" H
% Q( D# Q, W9 w4 R! }7 gset-plot-x-range 0 xmax
4 a/ N: l' Y* L2 m( D* u
/ G$ r  f# _0 W( ?* w- k: T
set-plot-y-range 0.0 ymax

+ U/ C8 y7 m* S  `; S/ U8 I7 Q2 Fend
4 Z* k6 R5 F( [1 M1 H% w
* X1 K, _! H8 u5 Kto setup-plot2, ?- U. p& c$ u, U; a

7 y3 h; A6 b: o9 t4 Y. zset-current-plot "Trends-of-global-reputation"

, R) }3 Q, p; \# M$ j" x& F
  v. }4 P7 y6 B; g' T- r+ Rset-plot-x-range 0 xmax

7 o" K  ]5 p$ U& ]# {  K" _" H3 N; \1 ?! c; C/ O& U
set-plot-y-range 0.0 ymax
$ f; E, C3 x9 d! X
end
6 G. F+ G3 B6 U, v0 g
  h+ [) W: n* x9 }; i. E; J' Gto setup-plot3
3 g! }+ V" E1 E, k% E  I) u! l& f+ P. z6 \# G. v- c
set-current-plot "Trends-of-credibility"

# P4 b" g$ J& h. g4 ~. R5 ?6 `: O  S- z) |. R9 y! E
set-plot-x-range 0 xmax
8 O4 N# s1 B/ m; ~1 m$ i; `
1 _8 y' W' V' T( ]6 I. `  Q8 @
set-plot-y-range 0.0 ymax
  C* s! @: l+ T; ]
end
( G; F- V: F+ c" v- Q  a5 h* m* i% ]* V' j" h
to do-plots
5 b- O2 a$ R) B  B9 Wset-current-plot "Trends-of-Local-reputation"4 @3 Y9 \3 l2 s/ }$ {% I( [' m
set-current-plot-pen "Honest service"# f: ]: a, }, r: v3 Q- R
end; k3 P* L, E$ N. n( E* K% C
) o  [. T+ v5 B' N: J. i  [
[ 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.% I" v3 X( b7 e5 U0 B( T  D1 u

) E( a7 B6 {  L8 o( h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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