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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:: C6 @# O, E3 A
to do-business / M& ?8 c0 R1 g- t" a
rt random 3605 Q: H* i0 I+ e; {, {
fd 1
8 r8 ^$ c) i. ]  p0 J6 |# @4 J ifelse(other turtles-here != nobody)[2 J# c( J% @8 C: r: Z* T
   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.+ ]! c: _1 G! w0 l! f3 w& T! s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 p# Z" d% E9 Q' Z6 O' p9 o4 ~: S
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 Q) p9 ^" v: ^( |: S, R$ I/ O   set [trade-record-one-len] of self length [trade-record-one] of self5 N* k: W& h: k! [) g
   set trade-record-current( list (timer) (random money-upper-limit))7 o% ]0 E) ?* t3 [6 r2 |: g3 C" T

! c/ j$ z7 L9 t% Q$ C( n' U问题的提示如下:5 h3 G+ g( V: O1 P& |+ J* d+ N- g
) J. T6 p5 X  x, U: K6 G- V! p
error while turtle 50 running OF in procedure DO-BUSINESS5 [: F( U* E# W3 z; C
  called by procedure GO; z. q4 O2 s: y0 s7 l. e
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 C5 Y' W/ t3 y
(halted running of go)
9 ^% l, [3 J6 ~3 ~1 T0 p2 e5 R7 z" T/ V- k8 H
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~~8 H. T" b+ a/ @& U& P# S" 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
: L+ f) v/ f+ c& `globals[/ u/ }2 h/ p% T6 y! ^- R
xmax" `" G& }' A' O5 {+ f+ V* E7 \
ymax  ]3 q( x) v! R) a# U; N5 V
global-reputation-list
# i6 s# O5 @9 x8 R6 Q# p9 b& T0 h0 Z* j; g/ l
;;
每一个turtle的全局声誉都存在此LIST7 a4 O7 m& v: L! x! _! k0 T3 H7 d# u
credibility-list# \: m2 x; |+ K7 d3 J
;;
每一个turtle的评价可信度6 W* L9 g4 f  [! V2 w( u" r
honest-service
3 `9 |% b$ h* \# F! {7 v" }- Gunhonest-service3 o2 v5 K/ N: f9 {
oscillation8 I' q! {9 i8 T7 O# l
rand-dynamic
# ^0 w$ Q/ T( N$ |) v+ x: r( S- []* Z" c* B4 I# n$ {

, ]7 }! O! Q- C9 q, }4 @' Yturtles-own[; i& X' h& {4 W$ Y' c
trade-record-all
9 P+ e  o6 E, p: F/ a4 R;;a list of lists,
trade-record-one组成
; ^0 [# p) k3 j1 v' J+ y4 Htrade-record-one
3 Z9 d) W# M, F7 ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  A/ r/ ]9 e8 }3 {1 A
* e) o; n2 Q2 {, v# t6 l. h& W;;[
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 s' S3 T! ]( p6 B7 E+ u, `& ^8 _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]
& K% G' z# E' h% H$ R! ~2 kcredibility-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
# I/ e) H- C4 o# G& ]neighbor-total4 H/ A/ b+ m# E5 i
;;
记录该turtle的邻居节点的数目
( U. a4 N1 S4 J3 gtrade-time6 ^* F0 s/ R+ B' m
;;
当前发生交易的turtle的交易时间
, m7 W/ {5 h7 C2 Aappraise-give0 n/ }8 q5 o" L; }4 v
;;
当前发生交易时给出的评价/ q1 A8 z* u- I/ {2 m5 \
appraise-receive
, b  Y6 ~% u3 D6 h8 S4 m;;
当前发生交易时收到的评价4 B( [* g- p3 r3 H4 v2 H) Y) G. _
appraise-time2 l( K' \4 `7 k6 ^) p: k. D2 ?% g
;;
当前发生交易时的评价时间( @' z- _1 Y' I1 P+ R& z7 a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ I- I' n  Q9 l3 ]  @trade-times-total
0 P9 Z. d6 z8 C( k$ n$ x+ o4 v;;
与当前turtle的交易总次数9 D1 s2 p, i9 m( h* u  f
trade-money-total
$ S4 ?/ c' @+ O- a) J5 Q;;
与当前turtle的交易总金额
. {+ P# {$ V$ g5 _4 Vlocal-reputation
2 C+ e2 }+ s# n+ f% [5 ~4 |6 Lglobal-reputation
  Y: t' Q; X: e- E, Wcredibility' D; [7 U3 ^, k
;;
评价可信度,每次交易后都需要更新: [; {' F# }% f- j" v7 ]4 f1 R8 F
credibility-all! ?# Z1 d4 C$ x9 O) b( H
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据# g* M8 o$ x+ l" i" C% w

+ J' R$ m3 R) M6 c+ p" }! m;;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
2 Q4 F5 v% [' Vcredibility-one5 X- o5 B2 U/ E+ s
;;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
& N: {6 n% b, s1 c$ Z2 _, {global-proportion0 |8 |- X0 v. W! A" N
customer
5 l4 }9 X; q$ n( h; i7 u# ~customer-no
$ A/ O0 N, {, h2 h5 R9 f+ Q; A  Otrust-ok
$ e* n9 Y/ g3 g/ p, Otrade-record-one-len;;trade-record-one的长度- i% }. J: I, h+ A" A  ?% ]; ?
]) G3 K& l$ g" |6 ^( I
0 V  |1 \6 \2 n( E) d- g3 }4 @
;;setup procedure
9 \* K+ |- [8 Y6 J# d
5 t4 D+ K( }4 _6 h) E2 {to setup/ ^. w  V; O6 E7 \7 k! `# [

/ @* e9 o" X2 k# \8 z7 Ica
6 U# H# K6 Y( A4 x; A; D& ]

* ^- @% r' S, ]) l0 O7 f" hinitialize-settings

' D  J9 \# ]* ]* b, v- _3 Q, {  Z: d% ?& Q
crt people [setup-turtles]
# H& \  S& m& v! d+ W
2 H7 @0 J% [* s, z2 o% D
reset-timer
) i8 E  O' F" L

' R9 d. D8 u4 C8 [6 ?  V1 m! Wpoll-class
) j  j+ ^2 S9 _4 Q

7 O  j7 U9 s) j  K9 |8 Qsetup-plots
) z/ q7 T* V: W8 v) w7 ^  Z, b! ~

& m% W0 m: a$ v7 ldo-plots

7 Z5 r4 o/ T* l% U+ fend
! w) h; \! C( a6 n7 w) W+ ]* w, |0 n: `2 e' Y" n8 k4 g
to initialize-settings
$ r' l: u7 j! t* Y& [0 K2 b' _7 @9 ]
set global-reputation-list []

% x/ `9 b' g! K5 l; O7 x: W0 x
( [0 T0 Y/ u) E# w0 {& hset credibility-list n-values people [0.5]

! a  V* Y- l2 _" R/ ?& f, H1 Y) z5 l& x. I. V
set honest-service 0

3 Z: f3 Q9 T# g, v) R+ B# ~; T- k7 f
set unhonest-service 0

# L3 x+ h! w1 I6 d
( y% Y9 y" n, u3 q# ^8 }set oscillation 0

7 C. Z1 j( h! M+ ~8 e6 m8 f8 t) _# t. X
set rand-dynamic 0
7 U& B) o5 n) [5 c
end- v, k+ \5 X5 z% F3 b

5 `0 Y# W2 h) F2 |6 Q# `. ?0 Wto setup-turtles 7 P* ]+ t$ I- h; `; ^' [
set shape "person"( k  ]1 T5 M* c% u! _6 }
setxy random-xcor random-ycor
2 C7 s7 t5 |, Iset trade-record-one []  a& C& ?) M) n% u

; t% L2 Y( H$ h3 X6 v2 _6 g9 {7 ?set trade-record-all n-values people [(list (? + 1) 0 0)]
8 ?& t. ]; L4 Y- i- _
% B6 u" \3 }' d
set trade-record-current []) G/ d9 D" @+ K! f9 w, W6 E6 |
set credibility-receive []7 e" M& p  V# o7 m
set local-reputation 0.5
" C/ N2 W; v- A% Kset neighbor-total 0
) z9 Q6 q7 m2 l9 u+ g: ~1 B1 z" ~4 Tset trade-times-total 0
/ p9 j) r, F7 a% R' y! B1 |set trade-money-total 0
9 j/ f+ B1 @9 Q2 {8 Z$ \set customer nobody
" L! G* _! ]: J' \set credibility-all n-values people [creat-credibility]
6 b! ^4 y- W; E8 {( M5 e$ Fset credibility n-values people [-1]
  q, O4 s7 W  t, Vget-color
% @- n0 A; `9 u: A& C

: D* ^; C; q, M+ K+ Z, s8 uend. g4 O  v) D* @9 D2 c/ u  x4 F; a7 p
/ T, D2 ^+ {5 F! I( J! u
to-report creat-credibility
5 b3 C, v1 n" I3 u* V! Ireport n-values people [0.5]
1 c: Y4 c# C5 F- L! q2 v& ^end
) |+ E! }& ^% x* a1 X- p- y
) h" F0 O! P5 p8 ito setup-plots
/ E$ F8 ?% a$ s; ?$ X$ o
0 t9 Q+ L% d4 g9 yset xmax 30

6 ?! l3 V: d. Z, |: A- Z! k/ j4 V  v7 S( W3 q- b  ]: O
set ymax 1.0
! S. z6 A: j2 ~! x  o2 C* L1 z

9 j5 g  u& v& `0 s& \; Qclear-all-plots
$ N( U. o7 a" Z6 s1 Z* `8 o4 e5 o
9 k2 e5 @! d$ S0 V5 z
setup-plot1

% I) ^* H# @. E  O) V
$ _9 f6 T% T$ }# A7 v" ~  j; Vsetup-plot2
6 U+ t" Q, y* Y7 I

6 @9 \* d% \+ r3 p9 ~' c# qsetup-plot3
' [3 }5 a5 d) {% [5 p" Z' Z
end" _5 p0 c/ ]. V

5 E* S5 Y* }7 X. L  X4 K;;run time procedures& U' L: j: A! J- ]# _
) u% [% h9 e& l8 @" @
to go0 d' [+ `& t) I) H" l) q# N; ^( I

% R- ~5 @: I) V8 S! |ask turtles [do-business]
! R, P: Q  Y6 L, X3 g$ y
end
9 }- M+ d, Z; @! x
$ q5 l9 V8 v. g; Cto do-business + j* S  ~; L0 w# F$ \/ H& ]

. u4 v0 t* L) y9 V/ r8 J" n% S2 h- e% `" ~/ A( ~. @
rt random 360

7 g, W; E4 ?& T- v9 n$ i/ P
" a8 A: `' x6 S$ A7 ~+ ifd 1

; s$ R" @( S2 w  r) O5 t2 T+ I# X
ifelse(other turtles-here != nobody)[

/ q: }( D2 w' y7 G- D, o5 {% F  s* A7 f
, s# |9 L1 s- H3 E" xset customer one-of other turtles-here
& Q" @: Z& j: B
- r' Q5 N; D" Z- C/ b
;; set [customer] of customer myself
/ H) ], P# _( Y/ l- ]7 L/ @
! M6 K! T! V$ ]! H; a5 n+ \" v3 T
set [trade-record-one] of self item (([who] of customer) - 1)
* N$ i5 @, H  a' v6 s* T[trade-record-all]of self9 x  K, k! {; i' c8 A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 Z( n) f$ S5 L. r3 o
, l8 ~: W  V3 ~3 Z+ n7 Z
set [trade-record-one] of customer item (([who] of self) - 1)
2 `8 C/ F4 Y- f# Z9 P1 H[trade-record-all]of customer
0 A: Z1 }8 t! H' m) f
" {3 l, O) E1 x  }0 z1 |8 r/ \
set [trade-record-one-len] of self length [trade-record-one] of self
) {' ?% q0 \6 }
- V7 U  b0 B* P
set trade-record-current( list (timer) (random money-upper-limit))

" O3 A8 `: J0 d0 r" r7 i' |5 g; k) ^+ c+ P4 ?9 N+ N3 t% X
ask self [do-trust]
% J# v# x& e. M9 l;;
先求ij的信任度
+ z6 d. H4 i0 n3 U  Q( h- x1 c# e
if ([trust-ok] of self)) H: T9 H; v$ f  H( H' s
;;
根据ij的信任度来决定是否与j进行交易[& S" }! Z/ y# M% {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# `; e: p5 W6 t, \6 W, n
5 O2 g3 h: I$ S9 ]  A6 e6 a! I[

" }: p& F8 ~# w% e
5 s( O# x1 R" {8 ?+ R4 o( Y' xdo-trade
, M2 m6 T0 K# t% X  y+ u

' p& v/ {7 `0 d, `update-credibility-ijl

, @8 [& l8 Q5 [" L9 V8 V% p, A' R8 A5 ]3 t) |9 p
update-credibility-list1 @5 F- h* q" M& Z

7 x6 Y/ d! r+ R# {
) |  B5 M' j/ {5 gupdate-global-reputation-list

% L3 g& D) S! P/ n. L5 I$ H% S2 s; ?4 f! R. m8 ~. c
poll-class
/ m5 K+ v! \4 O( r
2 X5 E4 R9 K  s7 K4 s3 |
get-color
0 W7 E% }1 E1 A, [

0 n6 ]9 z# S8 i& |! I]]
$ y" g1 q1 w- m. X8 Y: s% c
: n& X1 E0 i+ j- B3 h+ k;;
如果所得的信任度满足条件,则进行交易; g0 P: M. g- ]& o! I+ N& \3 w4 Q- v
4 f& x; G6 Z0 o; a! ]
[

- p% X* ?& L; W% H' H2 E, W: o+ [1 h
7 \' h; e. t8 Y5 a5 art random 360

. F/ v8 J& ~& y+ k
3 l+ R0 Y; j; D5 E& q1 A  [fd 1
8 B; ?( g5 ]  z- m) |

* V7 D' ~) d  M9 T$ s3 B/ ~]

" H% r9 K8 C7 z# W8 ]. j
. O7 C8 H: Q+ [  O. jend
: k' \) ]2 \% x7 j6 M3 U) y

  Z& u; J0 }" @9 R  i  jto do-trust
0 Q7 J; x+ a5 f5 t0 ?4 uset trust-ok False
! \' m: @! ]$ _6 m5 t; z6 V/ r5 t8 J' m# V# I- n
, V# _% j, i' k0 i6 U' y; Q
let max-trade-times 0
2 z7 u& v" o% B  [foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  C- @5 y% O; s6 s4 K$ G0 ~4 U, llet max-trade-money 0& }2 k! b* O+ l$ p  _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 e7 W# Z6 ~& t( a) u' S$ y$ r  u/ 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))
/ K3 }) Y9 y" T+ ]: ?
9 {1 F1 S, F5 \" P; f% }* ^

; m2 N+ @  j; N5 k" q4 W7 @. r' L& R$ O2 Nget-global-proportion
- t  B0 r  N4 h9 T" }( I' @let trust-value
, z! V4 D8 H- T- r. zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, R% s& [1 X) ]1 t* E- d- Z5 w
if(trust-value > trade-trust-value)8 b, w1 ]% F, i) y, p: d  g+ w2 ~  k
[set trust-ok true]0 L: _$ t+ ~& L
end; X3 l2 z; ?3 F7 E( L% ~) I

* |. d6 u7 r4 m' |, cto get-global-proportion
' f, D" R. v: z/ m' C9 ~, Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. w  y- d- [2 _, v1 W/ R, ^[set global-proportion 0]+ d% y. X" H  _) N
[let i 0
# O# O8 t3 i/ M5 K9 ~let sum-money 0) ]% c( T, F# G) B. e& I1 G( T6 ]+ T
while[ i < people]! w6 ?, [, h; P( G' `) \+ Y
[
0 V$ g/ W9 ?- \+ `  M5 M8 Yif( length (item i
- T& N; t( e  X/ n; Y) d[trade-record-all] of customer) > 3 )

5 j# [( [) J& W6 x[
5 e3 \4 c+ ?' _, lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# ?+ B0 }& Q7 \. ]7 c4 _]& J6 k4 |5 u( o1 e, \- M
]
+ ~9 R2 R$ y6 q8 G2 D( Zlet j 06 M# o" ~7 S1 I& @& C/ n
let note 07 f/ `3 O- P' L& b" ?1 w
while[ j < people]2 P5 e7 @  J6 B3 i
[# @# x; f' Q8 |4 }: v) b$ G$ H
if( length (item i. @" c( g3 r- h2 `0 Z3 s, Z  w
[trade-record-all] of customer) > 3 )

% N" Q4 W0 M6 b' y7 V[3 F6 A1 t+ r+ Y' m" p: o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 T' X3 g" ?$ Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 f' Q6 C9 L; q" @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' C5 t6 A# w! L2 O: P5 r]
( c3 G* W, x, @- ^/ D]5 R: K( O7 |0 p% B
set global-proportion note, T1 P. j6 [9 o9 }+ E
]0 H4 ?, f1 s; S
end( b6 W5 e" s' g) _) P
! ?/ d8 g2 U0 X- l% o! s9 x4 J6 ^
to do-trade
7 _9 r5 [0 `3 g; V+ E- ?) _;;
这个过程实际上是给双方作出评价的过程$ E, B9 @* a* S5 ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" |" {8 W8 L" T( {( Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 w, [0 ]6 W' w$ ]9 X- A
set trade-record-current lput(timer) trade-record-current. T: {) u( e7 t( n) T) m
;;
评价时间
. {" w/ T* w' v% |5 K/ H- \ask myself [+ ~5 O3 Q- ~; p8 w* Q" D
update-local-reputation
3 c4 K' Y1 U, Pset trade-record-current lput([local-reputation] of myself) trade-record-current
" \/ a6 P5 y6 B! T  t2 o8 R5 G]* ?' |% B4 R' e/ E5 [+ D2 g
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: k0 M  `* i5 b: A0 x9 D$ J+ c
;;
将此次交易的记录加入到trade-record-one
) G3 ^3 l- |4 x4 N/ Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ N" T7 l! Q3 `- s! o: Plet note (item 2 trade-record-current )
0 V# ]# Q1 n. ^( h& ]: |! fset trade-record-current
2 X% e4 ^$ {. G) H(replace-item 2 trade-record-current (item 3 trade-record-current))

/ z6 v$ T) k" {) Y2 t3 bset trade-record-current
2 P5 Q2 F7 Z) Z4 Z1 {: N(replace-item 3 trade-record-current note)$ t6 A7 g  m% y( O
7 j" J+ }' c4 t! ?9 |
4 l! h+ ]4 }: }+ Z8 p
ask customer [
) h2 }; M& b3 X% ^( \& _update-local-reputation
; k9 P5 x$ ?- b3 eset trade-record-current
( R0 I+ r- M9 r- z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, v# F2 }/ K8 g, q; v
]3 w% d- |# N) R2 M& |
$ N1 F* V! z# h; V- |$ |# l9 K
  _; J, g7 F- X" B! Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 p  ?, Z7 b8 }' V) i
  n" b* G/ Z4 q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" @! z0 ^3 O0 G;;
将此次交易的记录加入到customertrade-record-all
/ T8 ?: S7 o4 ^$ ?( d+ \end
6 @/ F. P( q; i  q
) G! }. A3 Y7 d6 b# L- X; y# oto update-local-reputation
9 X: R. z5 r8 bset [trade-record-one-len] of myself length [trade-record-one] of myself
: y3 m" R4 }2 l' L# J" Z% @" Z: p! U

* C- [) u  f' ?1 ]# T- {;;if [trade-record-one-len] of myself > 3

  _# ?' B3 t( Q. ?. cupdate-neighbor-total) V6 b6 I6 A& m3 b( G1 e
;;
更新邻居节点的数目,在此进行
! ]) W8 Y' y, u/ W7 ^' E; `+ Nlet i 3
! m0 `5 {& v) S1 l) ~( _9 @let sum-time 0/ B9 S3 v' C9 X* ?7 C! ?( S
while[i < [trade-record-one-len] of myself]
' ]" c! j0 T8 m+ w$ ^8 _  {* N0 G6 n! r[1 ~$ x7 x3 S) Y, Z# C" v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' p8 K6 [# N' P7 R$ }* ]5 O  ]
set i
8 v* x9 x2 P$ y8 {8 J8 }/ B( i + 1)
/ a8 u9 K( I2 w  y; W7 {. c
]
/ c: R& i7 K2 Q- u+ Flet j 3" c" h. v1 F7 @. S9 K! [' p
let sum-money 0( @- W. A4 z/ X9 V5 G
while[j < [trade-record-one-len] of myself]
+ c. y& n  ]; U* v9 K: |[0 N8 m) v/ M; P( `4 y
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)
$ q7 t5 q7 I; Xset j
+ p5 ^* M0 ^0 q) ^% M( j + 1)
5 w* e0 M  z% L1 m' a* `2 q2 O4 O2 V
]
$ D" a% k+ h9 Z: ~' O8 {  vlet k 3; N7 B& s4 o7 [4 h0 P# n
let power 0
$ I; i( @3 q* V& H* U1 klet local 03 }9 B  W6 z: [
while [k <[trade-record-one-len] of myself]
. b; [/ o% {4 s' {- H3 V. D[
  ?6 Y0 V% D/ Oset 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)
6 k: O. [; M* d! v/ pset k (k + 1)
* \8 n* o' X7 }7 X: @( P]
& {- a8 S2 d' _( ]set [local-reputation] of myself (local)) h5 ~7 n  L, Q* H( H( I( |
end. d! ^9 z+ b! B0 K

+ o0 M. g* K7 x, J( [# oto update-neighbor-total
' Y) P/ m6 Z7 p6 l- z* i+ O. m- Z/ {6 [- d  F; A  r
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 r- i! ]) f0 h/ f  p: J3 N
0 B: S; E/ N9 t" ?
9 |  L2 W1 C/ _* A0 c
end
% B0 C0 I5 p6 g
& f7 N. H& p( ]8 s9 lto update-credibility-ijl ) d1 R' c. S# {/ |

. C, ?# c- V2 `% T$ u;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
8 U& _* i$ C' l: r; H/ slet l 0
. i: k* ~5 W! pwhile[ l < people ]# X. n* o& p/ K  A7 O- M
;;
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- N4 a7 i/ U6 h) ^9 C# a
[
/ m; {2 D; e2 b4 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; p. l" M7 s# B; o5 Iif (trade-record-one-j-l-len > 3)5 M' m4 U5 Z( G6 g% s7 N
[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-one0 F+ |! w1 m" T' W" @1 B
let i 3
% |6 J& V) J8 g3 |& X" m( Rlet sum-time 0
; v# R% J6 y$ R. o- [3 h* rwhile[i < trade-record-one-len]* a) ^( g/ d. K
[
0 ?& C% m, e  `3 Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% q# N$ v. U# k' k1 v
set i5 \% H0 L4 P9 q3 _) ^, P& c
( i + 1)
; G6 f3 n! S  w7 J: D. [
]
! n. |) S. c9 ]4 M, |# blet credibility-i-j-l 06 [4 Z, o# u$ H% G: Q! z
;;i
评价(jjl的评价)
# |, ^) i: ~+ X, w& D  dlet j 3
  E" A* P$ w' G" Qlet k 47 ]+ x. ~5 t& [" P: s- _2 A' X
while[j < trade-record-one-len]
( R& x. v) k( p- ]2 t[, Q% j( i* ~% @2 ]
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
! g/ \$ [1 M8 @' s7 D5 Zset 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)  R0 r- x% o1 l; i
set j: m; _. a/ e/ A) u0 G) f% n% |
( j + 1)

5 e% [4 O* y; h5 T: |  {]! K+ T/ J2 P3 q; V0 s" `
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 ))
( l2 v6 I( I/ V1 G6 A( X
2 K! C# {5 W: r

+ f& g. H) B. X, \( }( ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 o& y4 M; I( F;;
及时更新il的评价质量的评价
) o; o# V& ]1 X- j& jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: x: X, y+ P/ U$ q& r8 y2 B% ~
set l (l + 1)
/ M0 _* ^% A; Q' X]; B: O3 E' J. A" f6 {2 W
end
" y. e9 }' Y- X0 z% r
4 q- P# Y0 G  i0 d) hto update-credibility-list# f0 G5 A4 [3 b1 _
let i 0
* @4 P7 x0 C8 i  Y# J8 d7 C) t! Kwhile[i < people]
# X( D% g, Z1 J2 W[
4 v# z5 X; q* m& g8 {: t& xlet j 0
! V6 h4 n: j3 Rlet note 0
8 C$ e9 n0 `+ v8 W2 f9 }let k 02 K& J* ^) P. a8 j  j1 V
;;
计作出过评价的邻居节点的数目
- \: B" W4 ~6 e* c( d  r2 Jwhile[j < people]0 ]9 k0 i) q, x- s$ U/ k# Q
[
$ F2 o2 Q; ]3 v1 E( dif (item j( [credibility] of turtle (i + 1)) != -1)+ v" @6 s4 R6 C5 M
;;
判断是否给本turtle的评价质量做出过评价的节点$ Y5 ~% p  D6 }7 [* r# l; Y
[set note (note + item j ([credibility]of turtle (i + 1)))
$ W7 v, b# H% S( r5 U;;*(exp (-(people - 2)))/(people - 2))]

, q9 f) o- {! T( J; ^set k (k + 1)
$ d  C$ `, m# i- F+ b* P' h]
( B' V) ~; n  Q9 h2 E$ q& |/ mset j (j + 1)5 ~% c- i. {! k1 h" S0 A" A
]
3 f+ E1 M- ~  aset note (note *(exp (- (1 / k)))/ k)( f6 f) R( g: C
set credibility-list (replace-item i credibility-list note)9 o8 G" `' M! r4 L. U) g8 B7 x/ P
set i (i + 1)  p+ g3 S/ h; f5 o0 l
]9 R+ Z3 S$ |. r4 a
end! q  G. G# W; N" A
. i7 }" W: [6 a
to update-global-reputation-list* A" \; L. u) S- G3 h
let j 03 ?2 l- s  f6 q* d
while[j < people]
4 T: e" J, ]7 J/ V5 U[: z4 C- s' a5 k* r7 U. w* c
let new 02 o4 _: s! u3 j
;;
暂存新的一个全局声誉
5 j0 J0 p7 G' T+ S7 \let i 0
: C' d/ Z7 B1 {8 S! Z/ rlet sum-money 0
* n) K( }2 s# ~& Klet credibility-money 0
; Z: m  N; U# G( Y, Z( hwhile [i < people]
0 x& s8 R/ F$ \- @! Z% }[! n, Y9 A2 x" i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 f! c8 [& ?5 v0 `' u: c3 H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 l7 K: C/ k$ U
set i (i + 1)7 B. p, {$ r8 S0 I
]$ q7 K$ W5 ^- ?9 g- ?
let k 0
2 I+ _/ A" s1 v% E; b% [9 _2 Plet new1 0
: K$ x: G& F- o' a$ Owhile [k < people]
0 m5 F4 s# n0 T- ]& u[
; N6 M/ w' w6 r/ E, L  M/ T% D1 wset 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)
( ]6 L& r% C3 a$ ~set k (k + 1)3 S/ |  A6 r! D9 o5 X: W8 N
]0 z) y2 C) U) S; P9 o) D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' H9 u9 ]2 r& |7 Y" N
set global-reputation-list (replace-item j global-reputation-list new)
# n2 C. {0 {; C, @1 J9 ?6 Qset j (j + 1)
$ K9 L& E  q* f( t  }2 t' T]5 Z( e7 o0 n9 D8 M1 G
end
% K& L5 g, m( B+ E
# i* x/ g$ P/ ?3 l( z
. f/ t  _, ^; v+ Y1 }: R6 |4 W: |1 b9 Q6 N# O/ H$ N5 n8 J
to get-color
5 Q' b3 ]+ {  z* G4 }& }; O5 X  R- K
! x6 ~* F. g- ^# Z, t9 sset color blue

1 O: ^1 m2 O1 {end2 i" \/ @+ e, q0 U

  M& L, l  x) D  M6 O9 u3 ]7 Bto poll-class9 k* h' B! ~( m  c& Q5 }; J' f
end
9 ?/ p$ E8 @2 d7 e% P0 L4 H
* O3 K9 i, h: _3 B& I+ m) g- s) Gto setup-plot11 `( N* C" ^5 S- \% }

5 F" D$ h  x- a- e. Yset-current-plot "Trends-of-Local-reputation"

$ ^+ Y$ [) ?, L7 L* i. G! ~. ]; \
) u. x5 |- \/ Gset-plot-x-range 0 xmax
+ q2 n$ U, _$ X9 k# j8 m  n
/ _4 w3 O6 @9 N: }
set-plot-y-range 0.0 ymax

% g0 e$ m1 ?7 h; j6 H% [end
7 V) d) q$ k# y; P! X7 I
' V/ u& h) Z5 E6 K5 c! k- l" q' tto setup-plot2) c. p% Q" m. H
; {9 R$ c/ d9 n  \6 j' L2 U7 g% u# r! l
set-current-plot "Trends-of-global-reputation"
3 x% w  M) H7 K& J2 B

0 e- [3 A; h5 p& r8 m5 pset-plot-x-range 0 xmax
3 E2 W$ O! Q+ b: @, c+ k
) [0 G' r8 c4 _& V# b
set-plot-y-range 0.0 ymax

' J+ s" j5 v! L1 b7 `: i+ _8 t( Aend" I( i1 s$ l9 h
1 ^; E$ o- f8 A
to setup-plot3+ F2 i4 s/ V0 F' w2 U) ], Y

; P4 A, C( N: h9 j7 qset-current-plot "Trends-of-credibility"
/ V/ R. V4 [% g, T" |8 g

# ]# R5 `9 C+ y7 e! k* ]7 bset-plot-x-range 0 xmax

$ M0 S0 Q8 u. e& f0 |! v. I, O2 n# _4 v* v; b) Y, ]! [0 L
set-plot-y-range 0.0 ymax

+ W( S4 X9 Z5 R& m! @: {6 c) _end
. K1 K5 `5 f" Y3 B' F& G, W# O. [) T. e6 ^8 i  ?1 J
to do-plots
2 p  H3 t& l, t7 H7 N5 eset-current-plot "Trends-of-Local-reputation"
( p6 o, F( \; Dset-current-plot-pen "Honest service"
% l5 z' L# J6 l; O1 c1 a. Iend
2 O5 Z, P' l0 y8 }3 f2 @2 c, e5 D& ^- V4 N# p! q, l
[ 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.
1 z/ c6 N1 ~& C8 u. F7 {/ d1 x3 I9 m% G  _1 \5 k' O
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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