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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:# n, s! ^" _$ D  s
to do-business : \% o  @$ |: M. T3 @* j, b
rt random 360
1 w$ d9 W4 ^3 r, J; d fd 1
8 U1 A2 k9 D* W6 X ifelse(other turtles-here != nobody)[
- c4 V7 h+ d& g; V: ]   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.
; ]1 V7 [! h! ?( ~# b' }! T- ^9 b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      v8 g+ n/ z1 d4 K  J4 H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; q0 F9 x5 l% U
   set [trade-record-one-len] of self length [trade-record-one] of self
8 P% a1 q/ \6 Z3 L+ ^0 |! K   set trade-record-current( list (timer) (random money-upper-limit))/ h) J/ {3 ~* }% T9 `

8 n2 z$ Z) ]; K2 ^8 A/ o问题的提示如下:% d- i/ {4 T8 a  u- @5 h
8 D% v4 ^! h: z% J/ u9 E6 d( l/ X3 C
error while turtle 50 running OF in procedure DO-BUSINESS
4 ?: g6 k3 J' [+ |  called by procedure GO
8 T2 l. _4 a1 M4 Z8 [& B3 {OF expected input to be a turtle agentset or turtle but got NOBODY instead.: F( N' V2 t( R8 p; |' s8 t& W8 r
(halted running of go)) |; d0 ?1 y$ ]/ k0 K3 v
2 i0 ~0 {' J' k8 T8 K6 o) M% W
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
4 X0 S# q  e/ X$ z9 g! x0 n" I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
' V$ n( x$ v% B# xglobals[
) z6 A" x. o5 a$ ?) Rxmax
% v2 G* m, z3 a0 i* N+ E8 _ymax% ~. D7 g. y7 n2 d" a
global-reputation-list4 A- I# C% b# t
0 s; k8 ?: ]3 t+ V" B
;;
每一个turtle的全局声誉都存在此LIST
( g' s9 K3 p$ |! `4 m/ K# [2 r# g# X3 G# ^credibility-list
( `- m9 k$ y6 a2 i0 o% e0 @  m0 B;;
每一个turtle的评价可信度; @5 `! J% n5 b# }8 |  }5 t8 N
honest-service
8 w0 o; r1 R. o( ounhonest-service
& M& W8 Z* j- ?; W& q1 f, s' Doscillation: W$ y7 |2 v0 w% _
rand-dynamic9 v+ g2 M* R: j7 f- m- X
]' Y5 J7 z- d& C  h5 V9 s
" m- r$ o! ~3 m0 Z# i# V
turtles-own[
% E9 m- U8 w4 ^+ n" I4 ltrade-record-all: ~4 N3 g) r  b$ h# Y9 Y2 |' ?
;;a list of lists,
trade-record-one组成
6 o8 p7 T/ h1 Y1 `0 [- Z. s  ytrade-record-one
) ~8 V9 u$ N* R7 R0 Q4 ]! {/ 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4 h, {$ H' p* J6 I% i1 g; F: V
7 M9 y) F) j: Y. X8 s* A) ~' j. B
;;[
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]]* e) ~, Y* _. t2 j7 c* |& 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]
( _; S( ?  P7 e3 ~0 p+ L1 fcredibility-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
; F- R  k% [1 ^" Aneighbor-total+ z( x, f5 p) H: T
;;
记录该turtle的邻居节点的数目
# J; M; \( \6 _$ ptrade-time
$ ]" d5 F9 j) T  h, D: {, I0 P;;
当前发生交易的turtle的交易时间" t3 ^2 k' V1 o. f' M
appraise-give5 }1 p% D; z6 }' q2 w7 M" C
;;
当前发生交易时给出的评价5 `9 H" P, ~4 U; p( a
appraise-receive
3 f- A1 F' W7 w;;
当前发生交易时收到的评价
0 J3 c& S' C1 Rappraise-time9 O* y0 X$ Y* X
;;
当前发生交易时的评价时间8 Q. Z9 B# h& B% f9 ]7 j" q4 F6 y' N6 f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* x  t4 `: O1 ?
trade-times-total  @- ]# P/ n. A4 B8 U4 i& Q
;;
与当前turtle的交易总次数% ~7 C1 C- B8 S. I; T
trade-money-total$ L! ]- {& M: ]. ~
;;
与当前turtle的交易总金额. i- W! w9 E6 P4 G
local-reputation5 [$ b1 e7 d/ L" H* A$ A
global-reputation' _9 e) t0 f" L# h/ x# F
credibility- @# n, J% c: V2 J" y! d& s3 q& L9 [
;;
评价可信度,每次交易后都需要更新- j1 J$ d" \) |" y1 _
credibility-all
+ l5 s7 _1 n. R;;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
  O' ^; q# P1 g. R- c* g' Z- Q& G7 x7 ]" R1 Y/ 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
" K4 E; m# k8 G- c9 _6 R  Tcredibility-one( f8 X1 o# c# u. w. W
;;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 `2 e1 e' u( B. f! K* l8 Z3 `
global-proportion7 ~) z6 N. z2 R
customer
! h7 ^% e5 B% E8 W; r/ a4 H- jcustomer-no
* Y7 b. J. Y- v' Y! n( Ltrust-ok
) G" l- f2 {. etrade-record-one-len;;trade-record-one的长度
2 ]% @& _& v9 x3 y]' O" l3 {  d4 N9 g+ g

; ^( b+ J* h4 u/ O8 |;;setup procedure
! v; w6 K- d& Q+ k/ M" j. Y3 w  T' k3 p6 r2 C1 z) ]
to setup
8 e3 I( D4 p$ t& a) A- ?' L
" q7 C2 A; N: N8 ^ca
. S2 r- x* V1 I2 H, i% q) L

2 e( Q4 @0 ?* B; v( l: ginitialize-settings
; x" T! i( E; A  _# Y' q* C
/ G$ L+ j+ }. ^/ V
crt people [setup-turtles]
9 Q5 o+ o5 _) U5 A3 {) y( I4 t
1 K4 I( Z, b( `# M) ?+ h
reset-timer

0 E- @1 F) k6 B$ s7 N; p
$ J* x" ^- h0 tpoll-class

: D+ |0 h6 q+ y
$ y6 g2 ~; p, C  wsetup-plots

8 u! U$ d, f) B6 g& ~1 O$ d2 S* ^$ R! O" U- u% o6 p; O' x& ^& |
do-plots
, A3 P& y+ A3 I# l1 D
end- Z3 a# J1 E6 I) C
9 J2 y# ~) h& g' B/ ?
to initialize-settings; v- |- u' E( l
: [/ J+ A( B9 E
set global-reputation-list []
: `2 ]4 ]0 k! [# ]

, f8 d4 ~* i# Q7 z& Wset credibility-list n-values people [0.5]

8 X# r8 {) G. t
5 X: S: ?! V+ v3 Lset honest-service 0
$ x! V3 f  A6 e/ v% _
4 x1 `8 {/ e! W
set unhonest-service 0
1 D) k: p& J: x9 ]' Q6 c
. P/ {* {" l1 L
set oscillation 0

( x' e9 L9 `3 r- o; V, @; D- Z: n/ i/ Y, Y# k
set rand-dynamic 0
6 `- R# s- X9 ~, `8 @  D
end6 T5 W! P2 u* S8 j8 T

. i0 g% x4 {0 `  nto setup-turtles 5 R( a  r4 m' Y3 j9 B) X1 B# ~
set shape "person"4 P  z& D- p$ q8 e# ^: S/ b
setxy random-xcor random-ycor3 D6 O9 w* a: E1 B) s  ~" [
set trade-record-one []
/ k. f5 p4 E7 t" t
- W# D. X4 V- l) l. ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 i1 R0 K8 x" U  v% f' b5 ?% N

# o: B( ~0 B, n# `3 V! Uset trade-record-current []
. I+ ]5 M& ?* N6 \3 f! \  p; Nset credibility-receive []
/ _0 I# y0 Z$ n" {. c4 G4 Yset local-reputation 0.5( z+ S2 u3 x7 J: Q
set neighbor-total 0! H% ]: w7 l6 n( G3 n
set trade-times-total 0; I# [# @& j( U" t, K% @; O/ s# A, j! L
set trade-money-total 02 l3 L! D+ A  X% d$ s, M
set customer nobody) W/ [" c' X- X; |1 A9 E1 Q
set credibility-all n-values people [creat-credibility]
& p# q/ n/ ]3 U* _8 `& h- Nset credibility n-values people [-1]( V- A: \- m8 Z' A, q2 L
get-color0 l4 W  O7 ~0 v) q

: ?/ s, b) N& M4 ^' Vend* v2 G2 T& x2 C" p0 C

  S$ r" ]# x! J8 yto-report creat-credibility
0 v# I/ M/ T* V4 ^9 r# U4 Y$ hreport n-values people [0.5]) E2 ?. b7 I- y5 \  l" p8 q# R
end
; o$ b1 Q0 k8 a1 H# b, B9 j. s. c' X, u. e, q: E# k3 [
to setup-plots
- q7 ]& h  J1 I$ B9 X% Z- N0 b0 X1 r5 U  V9 Z* |* H
set xmax 30
7 T+ s$ X* [+ l  m

$ F6 @# t# [5 Q( U* j$ Sset ymax 1.0

- q% d7 W2 B2 }$ i- B0 h: `; R9 ~
clear-all-plots
$ y5 v3 |8 d" o+ a( Y2 X
2 D; s( \' p/ ~7 T0 m4 O5 O
setup-plot1

7 O) \2 S8 o* k8 x: T# W1 B8 e4 S& l2 y4 U. R  d2 m) R
setup-plot2

5 i. \! [% ]0 T! R  ]; }; W& F
: A: V; I: A, Lsetup-plot3
" r, V: e  }7 `; s* _% E3 ~
end
) |0 |4 @, w) C! B; D% t4 w. l5 t, w% q1 A6 ?
;;run time procedures, k2 Q* y3 C5 {& L6 ?' P+ }

) h: |; |9 N: uto go8 H, ~% h$ l  k5 I$ h8 ~

7 s( C$ P( y, Oask turtles [do-business]
. m8 g1 X$ V% n0 U5 s8 U
end
1 n# Z! j7 C: q3 X( d+ [1 o/ F3 ]. l9 x$ ^7 {8 L
to do-business
9 m' x" M3 e0 d

. R9 i+ T" j6 @, [+ _3 o& h* C; w8 A( g9 e
rt random 360
% Z! \1 E1 ^8 [' i
6 f9 d& K" W# D5 @3 o
fd 1
, {: Z$ L8 ~! v. q3 S& c% Q

& w" J* `/ p' W8 ^% W/ V/ U& j( T) vifelse(other turtles-here != nobody)[

7 s1 [: M2 i" c  W
& [9 u2 H7 M$ P  Yset customer one-of other turtles-here
/ }4 S; s* b8 F
2 e  K- n( Z& p2 C( N8 b
;; set [customer] of customer myself

3 e* S* Z8 o) z8 `3 j$ {+ ^
* |) E5 h) n' `' a* I! uset [trade-record-one] of self item (([who] of customer) - 1)
5 c, A# u4 R  K3 W; H[trade-record-all]of self
5 t2 _  L/ e8 F' T' O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 H7 f% G) i% n
" c- x9 g6 v9 t) \& z8 H% Rset [trade-record-one] of customer item (([who] of self) - 1)
4 B; _( u) f" x! {0 X1 ^  X[trade-record-all]of customer

# D( @- k) t6 E" G5 |* n* h) ^8 ^. H
  a* `1 }* @' H! t8 lset [trade-record-one-len] of self length [trade-record-one] of self
# S/ i+ E5 \+ g* K$ O
2 ]/ C( Y0 P! G- ^8 \! e( f% k  e
set trade-record-current( list (timer) (random money-upper-limit))

5 f3 t+ X, O5 U- ]- n  @8 ?- j% V& ?2 \9 k/ Y+ h
ask self [do-trust]) a- i% Y& G4 }
;;
先求ij的信任度
( r3 L& C) c/ ]! k% z6 X. b4 b7 {; A; E( U9 M
if ([trust-ok] of self), E& G6 q" ^* W3 b5 u
;;
根据ij的信任度来决定是否与j进行交易[& L' u+ U  @- ~; s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) [: b! Q( R! s- ?+ G  A7 D5 d/ Q# L# Y! L; I* c7 o
[

" A6 h5 A6 y9 H3 Q; X
: \# z/ a2 c8 Bdo-trade

/ |6 z2 h. n" o" K6 ]; t( v9 `5 }4 x1 b7 e
update-credibility-ijl

$ x& A3 F. `( l4 W9 P. z5 ~( a  Y$ {% R8 K9 M# h- @
update-credibility-list
2 w5 P* W; K6 F" c! k
* T+ n* b$ f5 m9 Y2 s* b

8 Y2 ~' W0 k9 k8 v" \0 ?update-global-reputation-list
" f' m! L# P/ i3 b% p
4 o! P( Z- r6 e: U( M  S
poll-class
" m9 E  U: B+ u8 a$ j' |

! _! @( e7 H' z, xget-color
3 }' r  M- _* M4 W; n3 n

. N3 T+ m+ W3 n% ~. c5 w]]
" i1 ?+ A' M9 `2 }; b, s1 W
( Q- ?: L, u$ t;;
如果所得的信任度满足条件,则进行交易; u1 m4 x) T- L% n0 _3 F; \
0 ^/ q2 o' a2 u+ z& Z8 ?5 Q  O% @# K
[

# |1 h, {0 r0 \& c' H5 h
9 L  d  Q  q* |3 i" Grt random 360

: k2 h/ Z" \7 H& `0 a3 E5 G+ Q3 O* m+ o8 r9 L
fd 1
9 E0 s) K6 `/ w! }5 m

; e% m0 K4 S8 k/ X, y) E3 K* b]

, ~/ T% i# b* O1 o# P
; W3 E* f' V# P, s( C% R& Wend

0 v, U+ _1 l* l3 Q0 q* R: i8 |/ A" Y6 W1 ~
to do-trust 9 h/ J  O( F) f9 V* u1 Q; ?
set trust-ok False
$ _% a- b: J. j- B
: {5 ~: C$ |2 `- w) S

  y  z0 u; r6 w( m. c0 _7 O" \let max-trade-times 0
  D0 K  v$ W3 A! Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; f$ F% B9 n2 V
let max-trade-money 0
, W# W+ I3 |9 M! Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, @) U9 \/ r2 |3 i  I, z* ]2 ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). J  _+ H" Q" f' D" j  h

& V) z3 q# q8 r$ ~! ~% m

5 u7 |) {* @4 E1 P3 w( Kget-global-proportion& e) G( X! q8 X) n1 {9 g
let trust-value0 D& D, S- ~# N, b
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)
; E7 {9 s% r) f- @
if(trust-value > trade-trust-value)
5 Y/ j6 e* [  W9 ^& x[set trust-ok true]
7 w2 f. R+ T& A# b! yend
# q1 j) `; f+ c5 D7 i- v; Y5 ?( n2 S' _
to get-global-proportion
/ x; f9 ]; ]: ]' U$ u# ^% o, p8 ^ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 a9 h& ^! G7 T" S& X[set global-proportion 0]
$ _6 z1 f2 [3 D6 ^[let i 0
- I8 X6 T" |& Nlet sum-money 0
7 |7 B! M: [( N" C0 ~  q( s, M# wwhile[ i < people]3 X, u& v6 k( b
[
4 ?9 _; j9 S. }8 l4 l* Mif( length (item i' J! W9 e, A/ Q4 g7 ?/ b
[trade-record-all] of customer) > 3 )

7 Q5 L% W0 M) s7 o2 }6 j[
+ j0 o" j  ]7 S- Hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ c; X1 V! ^8 _
]9 d  @: b/ }! _6 ?' Y, J* y
]9 W% \6 T5 B# o7 j9 I  E
let j 0
. ]) ]& i7 j  G4 D4 V5 J5 _let note 0
; ?5 O* w# N8 p5 ?while[ j < people]
; }. L7 W; j" b: L[0 A, I- X9 N% T% s5 v: t! S
if( length (item i3 s" _6 I% c( P: {( y& A. }# M
[trade-record-all] of customer) > 3 )
# f, H9 ~' u  K, c7 t1 Y
[
  ^" X/ O" r6 M8 Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" P, N( C* l1 s% {! z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 G- e: L4 V3 ^) R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; N  P' h% M0 P# K: F! U* q: W
]& U; C4 `. e" ~$ ^4 o
]
( t8 f8 E. f( m/ k4 M4 A0 gset global-proportion note/ r& X) W& d" H6 h5 d2 E3 a
]
# O' Q/ y+ b8 `& dend
3 Z! i/ `/ \; y% Y3 k" `
) |! f& o$ \% P# lto do-trade4 t2 A  a" Z3 b0 L( d( D6 c
;;
这个过程实际上是给双方作出评价的过程3 [- m: ]" |" P# N" W4 ~; V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ P3 v; m9 u5 iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) Q3 W5 J" X5 o- d( |/ K2 o
set trade-record-current lput(timer) trade-record-current
, M2 B: r; @3 ~6 \: L;;
评价时间# P; T% i  f$ h: r3 r) @6 l8 x
ask myself [
1 K0 O4 r8 p( }7 |update-local-reputation
, [" Y1 R5 R% S3 W. J5 ?; ?: ]set trade-record-current lput([local-reputation] of myself) trade-record-current
( h* _5 ~+ U) h7 `: z% ^5 g]1 |  s9 W6 C' f$ b8 n# n: R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" @% g, N8 y8 H7 b8 h; a* w;;
将此次交易的记录加入到trade-record-one) o6 k# A$ u# K8 y. Q  {4 Y. [( t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 @) s, w& j# z, m( e
let note (item 2 trade-record-current )
9 W9 R, D) n4 S6 J" {  N( C4 pset trade-record-current) r( l* ]/ B: K
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 m  d# [1 s' s1 q6 Bset trade-record-current
* R2 X/ k$ c0 s(replace-item 3 trade-record-current note)
/ q* i& p; L$ |7 G0 r
6 T2 J$ K5 o& e$ _; X

# Y# Q8 Q3 i3 ~; Uask customer [
8 w; Q$ t! M' A+ }update-local-reputation, [# [# J- q2 N. e) U2 h% A
set trade-record-current
9 x' o. B% q1 Y% A7 g" T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( N$ y: K$ ^8 q! R, p9 \. `]
( f6 a' D% y7 U8 x# m
" P- r% @+ L* {. \* w7 G
2 s; g7 c7 U, c/ f4 p6 t7 A1 }( C
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 x0 g; j# c1 |/ i) n, P

* X" r. n) ^% M, Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  z* I3 j% O4 b# u1 i7 L7 ?5 L7 L;;
将此次交易的记录加入到customertrade-record-all
: p/ Y4 J( Q8 G% K! Rend
; n* X& w- Y3 ^6 I) a( I2 P
" y$ _  ^) I( J4 \to update-local-reputation. s% n8 n7 N* i+ i
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 f9 T6 B7 Y2 s; S0 t8 _! L; z) H4 ]
0 x9 c- U7 n7 M& ~; C8 B5 _  M+ I* F
;;if [trade-record-one-len] of myself > 3
" _+ Q7 j. ~6 P, s0 s
update-neighbor-total8 X# z" w1 P  D& S7 W+ a, M
;;
更新邻居节点的数目,在此进行
8 z4 M& v* |+ O  k6 M; z) dlet i 3
  M" |( ]9 l9 E* }& @; Llet sum-time 0
" F& D# l5 `2 e: E' D$ Y, ^4 A* O. dwhile[i < [trade-record-one-len] of myself]
+ T0 T0 s9 P) j7 B& O[- l1 y8 a) k& y5 i( Z7 e$ f6 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 G% ]4 ^  T" C6 m+ e! q5 Dset i
+ [5 _- u0 u" t6 r# |% G( i + 1)

  `2 o# X# I* }! S" L# J. X7 j$ t]" e$ ?- m$ ^0 Z" ^# ~( @: S+ S6 d: p
let j 3
4 s" X; X) d6 L* F* Klet sum-money 0. i/ K# i1 {7 e) u
while[j < [trade-record-one-len] of myself]
+ u; G* N' c+ A9 R- |; o% u[/ L0 `& }, T" f4 S5 A
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)5 v' U' d2 R! p) u. |' k
set j
( `' B3 Q2 t! i2 f; k: T( j + 1)
4 ~; p! `9 N! S3 ^5 u
]
% x, L. f$ [" a1 \0 ?, f, nlet k 3
) S0 ~& v- o5 A; xlet power 0% h6 F* H" r$ ~2 W/ N# w$ a
let local 00 i" l3 {# r' _4 y" w
while [k <[trade-record-one-len] of myself]
" S+ `2 p" }4 n3 M" p% W[% C8 g$ u2 N8 h* S  j& e
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)
# }# n* j' e; U, ]" nset k (k + 1)  B6 B% F) ]& s: N5 f/ d! p
]
+ r8 d% c  j; s- ?% lset [local-reputation] of myself (local)
2 M& K3 c+ L1 |& @3 ~! F* Oend8 N- l# o4 `5 K1 _9 S& `

* E) C. ]: z5 |- _  a& L% Ato update-neighbor-total
6 R/ S5 Q* V# J7 p) \: a" I4 r% _% n: @* W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& m, f' T( [4 i, f0 t* C9 p0 o9 B. `! x

5 t* r. D, r" Uend5 r  x9 t  v  m& x" a) ^% ~8 x, g
! O- K3 }4 |# B* f8 R3 Q0 C0 \
to update-credibility-ijl
- b( Z, g! W' \/ c  s0 y  {8 F- ]$ T' l4 l
;;
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。6 V4 `; l# v0 p0 I8 @1 o/ @
let l 0  P5 ]# R+ X" p
while[ l < people ]
+ [: j5 m$ |8 g0 i' G0 G" `  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( C' T5 H" w6 h; u7 T$ y! J  r& G
[
% ]9 V# G" u2 y: B2 f, s: Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ c8 T0 @; a1 N0 u% e3 n( c# Cif (trade-record-one-j-l-len > 3). E8 g2 c& p' v, {
[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
( T2 O4 q8 O5 `$ o0 J6 Rlet i 3
) T( X( e; A+ E9 ?8 ]; {let sum-time 0
$ g. y! s8 W( j, h& H& H0 x! {while[i < trade-record-one-len]
, x% \, X$ j+ g* Y) X" U[+ J3 V3 M8 A$ j4 ~& M2 P, ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 r, o. y" D, C( G5 J& A( _) ^set i
& T, b. d$ [6 c4 q; ?. X! l7 U; v( i + 1)

* W# v+ G- K* I( ^]
8 ^4 x0 T+ B* ^2 tlet credibility-i-j-l 0! J/ E5 f1 T% p
;;i
评价(jjl的评价)
" V8 n0 W  U$ i/ Ulet j 3: J5 ]7 U8 {2 ]' ?& ]1 @$ y5 t
let k 4( }" R1 E* R0 @! r+ K. o8 l
while[j < trade-record-one-len]& r- m' ]# I2 D5 D9 d1 r( o( D
[! `7 a0 V  e2 f, z
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 b/ ~/ Y& I/ e6 q& Z# g1 J+ c( N+ b
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)
- e- \# x1 I; sset j
/ i" V% {' P, @/ ~( j + 1)
% R/ B" F: {9 I. L
]( N) G! t4 z$ X; Q" K
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 ))
, x5 o5 l2 U; q0 H9 o& Z8 m( d4 v3 x

6 A  h# [, Y% Vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 q7 F& Q% y8 q: R6 t6 E;;
及时更新il的评价质量的评价
+ k' O; j# ?- yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ p% W) n3 [2 u% @6 Pset l (l + 1)
- F3 w5 S# q& D& J]
: D& N7 X: Z6 X; B5 \2 r+ n: Lend
4 k- I6 \4 M" p$ v) G+ j* W: h; @  B: B  {& K4 a0 E
to update-credibility-list
( _6 \7 k2 K4 O8 Llet i 0
- j' g6 b" D) x; F' rwhile[i < people]
$ S4 g5 Q" w5 C3 o[. P. v' S. _- @- h+ s+ v7 H
let j 0
! J: Z3 x$ U5 D' ?let note 0( Q6 E$ D; J+ W1 g, Z; t- l) C
let k 03 G: ~6 ?, Z6 K$ s1 C
;;
计作出过评价的邻居节点的数目
3 z- t1 p! Y/ |( c" L& Z1 N) }1 nwhile[j < people]
4 {' y( e3 T0 H9 I! G3 \* V* M2 b2 l[
4 R' Y& }) [' Aif (item j( [credibility] of turtle (i + 1)) != -1)! w+ F+ y8 b8 c' K
;;
判断是否给本turtle的评价质量做出过评价的节点
. ]6 O& |- R! ^( D% `6 Q" g; h: R[set note (note + item j ([credibility]of turtle (i + 1)))! h7 o' `; v- R8 p" Z
;;*(exp (-(people - 2)))/(people - 2))]
- d0 W) J( P  m& f" I5 x$ T
set k (k + 1)- T- f( j3 A# S) m: y. c
]7 o& d& V, O; t! e: h9 _, q  t  g/ |
set j (j + 1)+ U- v0 x0 P* h6 @& T5 W% y
]
( R  \8 j" v: p, a0 H" R" \9 ?; F" _8 _set note (note *(exp (- (1 / k)))/ k)! }- y6 s2 z9 k
set credibility-list (replace-item i credibility-list note)
7 r! l  M- n0 ^2 t& lset i (i + 1)
! H1 ~% i1 P  l( V5 n; S]
; N$ ~% A: [$ p7 k. R- V& Mend4 o' A! |# |$ u$ W' |& Z' M, X( V

, z5 i! Z4 I: S$ A( Gto update-global-reputation-list
2 `# [" H: h, X7 qlet j 0
7 M- V) [, h9 ^* owhile[j < people]
# n  }/ M+ ]' L7 p[' A5 J8 d  Y3 H" ^: ~
let new 0
! q) Z' y; w& }/ i) V;;
暂存新的一个全局声誉
1 q, t4 s, L$ N# w# L1 Dlet i 0
' v0 S) t3 R5 m5 Ylet sum-money 02 ]. y. ~$ O; T
let credibility-money 07 X5 S2 V0 e/ z8 ]- n6 \" ]
while [i < people]3 Q5 B8 u5 L7 J7 @: u! Q$ J, O$ b: |# U
[& Y% S( a6 b1 W9 O* Z$ M$ a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ j% Z/ @. f, s- Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ X. B: B0 c3 O# X) t7 yset i (i + 1)
8 J: I' r0 }/ s9 X% ^$ ]]
1 ]* u6 i# n+ Elet k 0
' z* g! ~/ x  J& e- e8 }) R' vlet new1 0$ {$ R* P( e2 h. \% z
while [k < people]/ f6 M; Q" p( c2 H; Y0 V
[- `* d# N2 Q7 `1 D
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)
+ q1 Y8 F2 X4 @% M( cset k (k + 1)  k! K3 E) M7 ~0 c; k) g$ Q3 e
]; J7 r! L! E  @7 {. N: v+ L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' J6 J. |. Z3 p; t0 ]# A) C2 X$ Rset global-reputation-list (replace-item j global-reputation-list new)
, E* [  E! ~5 Wset j (j + 1)
9 o$ ^- R+ K. [" j/ x+ p]) x6 g' E; G) J% Q$ j
end5 }* g' N; |, w4 b+ [
. I" L0 `8 D1 W- d

9 a$ v8 l  u) H8 x* a! r) J) [6 O3 W1 ~. ^$ M6 Q
to get-color6 [" }1 ?5 q- N' N/ m

6 U& E- i# T3 w  Pset color blue

+ p1 z5 j# b2 I) [end
& K( R" l& q8 {
6 `6 h" Z, p: \% \+ [+ tto poll-class7 K; }" \, y6 G: y
end1 ^; `( Y+ I$ z0 r3 l

. P8 ^# _2 V0 I& w% {+ Yto setup-plot1
. s9 B. t5 B# d3 w$ i" k" O0 Z( a* ^- J, w* m6 z0 Q3 k. ?' m
set-current-plot "Trends-of-Local-reputation"

; q) W/ F3 r3 l% _
  f! Q4 H  a. t$ u; n/ r4 Nset-plot-x-range 0 xmax
/ X: ]0 Y6 Z9 R% v; }% x! w
1 b8 z4 o# v1 X- h$ R' l
set-plot-y-range 0.0 ymax

4 Y/ u3 n; }* w; N! n; Hend
9 c% u$ G) M" s  X7 M# o! ~) m( t. @. u0 o! ]
to setup-plot20 m+ e5 G7 L9 K

0 U! a( @  j* w0 Fset-current-plot "Trends-of-global-reputation"
. @8 D5 U* }6 V8 u9 A& n

# x5 |) V* E# l& [2 H1 I( ?; m/ `set-plot-x-range 0 xmax
4 A3 _/ Y* o, H' r$ L" s! y1 R

( s3 d! A3 I* nset-plot-y-range 0.0 ymax
  d6 ~8 \& X/ a# y# L" t
end
6 L: c' P8 s& x1 n4 D
2 L0 q& E, t- bto setup-plot3
( W3 @8 f# I( x- x  ]) T5 y, L4 ~" {+ T& o  h' J# g  l
set-current-plot "Trends-of-credibility"

+ y+ u5 D4 A/ g$ P% }% J" v' I6 d# n0 i$ C" f
set-plot-x-range 0 xmax
& x) }6 I5 s+ K5 ]0 z( j5 A1 Y! D
+ {; c8 v: \2 L% k7 M
set-plot-y-range 0.0 ymax

( a8 s5 h9 d/ e+ ~5 Cend
/ M" }" U/ G9 `& @; }8 b6 x, _2 a+ O
to do-plots9 o- O% H1 \9 v- [1 Y
set-current-plot "Trends-of-Local-reputation"+ H  i; O$ h5 ]3 u- L
set-current-plot-pen "Honest service"
2 E) O; e& O" B2 y0 L2 ?# f( _end# c4 n% T9 Z- w! ~8 |% w
" a) N7 P& n) o$ v, g  h$ C2 v2 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.
3 s3 F2 ^9 [8 h. G  m' x
9 K! v. J$ u0 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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