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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:2 D- r# k5 D6 A) j- l
to do-business   X/ ?7 l) S6 G. z2 d  r1 x5 G  J
rt random 360
' ~& C+ l& \5 I3 G; T9 L4 t fd 1, a& d6 {6 Z" S3 L
ifelse(other turtles-here != nobody)[
$ F( m+ O9 j) {   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.5 x" i6 [1 o3 c4 Y, M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 e" I& S$ s5 x3 Y* Y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 W0 [; f- u$ i! P) t& L   set [trade-record-one-len] of self length [trade-record-one] of self+ o7 H0 `# }  S1 z# U
   set trade-record-current( list (timer) (random money-upper-limit))
+ F, {( ?2 U6 p% G7 F+ U
* W: Z8 b) ?  H" i/ R$ n$ s; Q9 Q问题的提示如下:
" J8 w4 o% K0 ~) G8 f  }) i! I2 ^- ~$ E! \' `; b
error while turtle 50 running OF in procedure DO-BUSINESS
7 N4 V) H  K6 z' Q$ p  called by procedure GO7 ~! b, ^- ~$ {& l' D% h
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( p! I- h3 B1 E1 C
(halted running of go)
. |8 q" U  _) N1 D3 S$ {/ r& ]' ^& r- f: H4 k6 Y$ n
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~~7 P8 i+ I7 F- Y  X+ D% {9 E
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- A0 @( T* X" E' _: |( Y6 H% v2 ^3 ~
globals[1 e9 m: |+ E4 d1 s1 N, A
xmax! J  C, O* o2 ]* g, H0 u4 U, j
ymax
: W' q" p3 V) p( }8 Uglobal-reputation-list. U3 v# c6 |9 [8 \

8 }' j3 y' C% ?- G9 U; {8 ~;;
每一个turtle的全局声誉都存在此LIST( e! R/ k7 J8 m* \$ r" M
credibility-list7 ^" f" P! ]/ H' O, k, I% U/ Z% ]3 b
;;
每一个turtle的评价可信度
; o4 y1 m1 Y% ^, Xhonest-service& F6 V; m4 }* H0 O* x
unhonest-service9 a8 n' W$ C1 e# Q( c% H6 \0 I7 y
oscillation3 Y0 n# T. \/ a7 p# I" Q
rand-dynamic# L  S. k  X' o4 A3 a2 Q' `" d
]; U% E- V) d! `. D9 z5 Z, i

0 o1 d$ v2 Y! D+ rturtles-own[
, E# J0 ?2 e& Z$ P) q7 Vtrade-record-all( r$ P. m4 n; p9 x# a6 t
;;a list of lists,
trade-record-one组成# O  G; X! ~5 r9 K5 F
trade-record-one
5 c$ _( o! d, W" K+ 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
9 z. f! @" M, A5 E
! M* t- ?$ N" W3 ^;;[
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]]7 r4 u. c) a$ L4 `+ l- ^5 X4 Z0 o
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) g" x4 X- j" E' E) @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
- |7 _4 b5 _6 |( v/ ~0 S6 lneighbor-total8 r5 U6 w6 t$ A: N0 u" J. _- h
;;
记录该turtle的邻居节点的数目
3 f3 m! m6 {1 S) J8 f0 Itrade-time
3 E9 U' G* H6 s! c( F' N1 y% X. n;;
当前发生交易的turtle的交易时间
/ d7 Z: ^. l5 B: Y; [0 I( _appraise-give" r* t+ A! C8 P. T0 M  Q
;;
当前发生交易时给出的评价3 w! m) E- Z8 k
appraise-receive
" ?' B: M1 Y+ p; B( e4 }" V8 ]; z;;
当前发生交易时收到的评价( z; L  G+ J; z
appraise-time
: w8 g% B: v& Z;;
当前发生交易时的评价时间
! s# m& {8 G( D  m# J' Y: R7 {  Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 M- R! a2 D" b$ W5 [% j" O+ r. t& Gtrade-times-total# k- c/ ?9 r1 r1 D! k3 u
;;
与当前turtle的交易总次数
0 j- t4 B3 u3 t; m4 c* Q- q- mtrade-money-total3 ], j# b2 ~+ j  R  K
;;
与当前turtle的交易总金额
4 n# t& J% [' ]' k8 W) R7 Vlocal-reputation) ^/ }/ U- V0 I3 ?. I6 O2 i; a
global-reputation8 |, P* F8 b( |# r) p  A
credibility
- n8 X! h) f% V! D& R, x;;
评价可信度,每次交易后都需要更新- A) T. h" j+ v0 s
credibility-all
- h+ N  K4 Y! s5 u( ~4 k;;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
7 l: K) F* Q. Z! M6 `' d' g4 I0 `1 Q
;;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% |) m8 J# I8 P: N8 B# n
credibility-one
) N0 u( R, Q* v0 y; O;;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) l  p3 T, p: L/ S; A
global-proportion
- }' n/ Z6 I, A3 Tcustomer
( i7 U3 M0 ]4 M1 _. c* t- ^customer-no0 P  C8 T# i7 u$ i
trust-ok
6 i: n& P, _+ Q9 k$ `8 l6 Z% Ktrade-record-one-len;;trade-record-one的长度  e2 t' @) x  L3 F
]( b0 ~8 f3 f, W6 O

: m) `/ @$ a) ~4 K;;setup procedure" k) f# t0 W* j9 ^0 w' W$ R% Y- {, E  u5 S
! w* ^' P. a, Q1 L% g
to setup
* W! E& m2 B$ x% V3 u# X
7 k9 Z6 L% J2 V) nca
% P7 @9 Y' K9 m: H% e. `2 W

4 J, t1 M$ v8 A7 b7 T2 A4 ?% dinitialize-settings

  L8 O& T4 M& |: P# o* q9 k8 [8 y3 @7 q) w+ a- X
crt people [setup-turtles]

2 r7 j0 Q" s. k' L  Y6 ?7 V1 q: ]7 R7 M# U5 Q) K
reset-timer
! E6 t! N1 v% ~- {9 `# A
7 x; Z3 v. C. P! v
poll-class

  I, `, K  I: v+ z" V$ t, M! J+ L- q! J
. T( E9 H+ z5 N) C8 K. P* Vsetup-plots

& j: j+ f( z/ n  s$ P- `3 L) m0 @
: F- S+ d3 C0 q1 Z2 r) Mdo-plots

7 @5 k8 K/ j- `! X8 G* P3 W9 Q4 c% ?5 }end5 m/ T+ A, f; f* \& N  u
+ b3 N, k, M( q: c1 z7 ]
to initialize-settings/ u. y; e9 e' ]( y/ x+ E
3 U/ f* v7 Z6 ~% C( [) W5 Z
set global-reputation-list []

4 y4 Q8 `. _* Q9 {% y9 E# C2 I" ]' X$ @0 T' |
set credibility-list n-values people [0.5]

% F. ~6 q; u/ b) J) L' ?+ ^' Y1 V* E& H1 u
set honest-service 0
! e$ g0 ]) |: |+ v( K6 F

9 ?# ?+ u; x2 {! p5 b* rset unhonest-service 0

. h0 R$ Y$ l" B7 y8 |
& S  T% i* W/ l  Mset oscillation 0

3 B- D) M/ a2 l0 l! g# ^4 v6 T) q# V- ~, k$ u
set rand-dynamic 0

! A. v' a0 G2 z  N0 R# }5 r: [end# p, L7 ]0 K3 T' b3 D# |+ i
" F2 q! O6 x% D$ n) k
to setup-turtles
4 o* Q) r  E# V* J9 U8 y& ]set shape "person", Z* L$ ]7 ^$ }* R! Z9 A6 `
setxy random-xcor random-ycor, t' R6 E+ ?  H
set trade-record-one []
! \& W: X: ]1 J0 [
6 X% K% i5 P/ L4 }4 w5 z
set trade-record-all n-values people [(list (? + 1) 0 0)]
* l! ~( {" I1 r- u' g

, D8 p$ J1 M* y7 m1 Z: \set trade-record-current []+ L( G7 f& R1 \0 k- G! `9 l
set credibility-receive []
. k% b( }% I9 u' G& _; Nset local-reputation 0.5
7 J! m4 A* H% E5 F' Nset neighbor-total 0
: k& K! ~, m1 ~  ?set trade-times-total 0
9 d. v- \) b3 P2 n9 s6 ]set trade-money-total 0
0 x% {7 _* P" _' ^set customer nobody
& Y0 E2 w: b, {1 @0 ~* rset credibility-all n-values people [creat-credibility]+ x, b+ B( k: g& L
set credibility n-values people [-1]7 Z: k/ {. l% e( y% b2 E9 S) r- f
get-color- p9 {" o+ O' y* X- L6 }

! E6 A% a& j8 r( g2 c8 Rend
4 H( n, F* H! r5 @5 L% {: v
: c! W7 p* B( P# c( ~6 ]6 Bto-report creat-credibility
( y: F2 X$ v' d0 I; ireport n-values people [0.5]8 X% N  N! t+ b8 X4 w: i
end
$ e0 c6 k- \& V4 L" W4 }' p" B; l6 X' o& w$ d
to setup-plots: P1 C; b# Z9 M" ]' g7 A# w) ~
( b: @" X3 K' l# @! n
set xmax 30
! E8 X0 D, T+ P0 q: E

- X5 Y9 f" c3 t+ u" M1 K1 l. Eset ymax 1.0
4 @! s* F" I/ I" r+ O$ W
4 Z0 q2 l8 e: e" F. ^# X
clear-all-plots
+ D) }+ ]. L* {! Z' M

& g& l$ ~( g, ~- ^8 Z- Tsetup-plot1
. g7 r3 C6 e* l3 i+ b% B
+ |1 j( i3 S8 [$ a  U' Q" [
setup-plot2
. V( R, X  S" y" Y: D4 ^9 o$ H

  D5 O- p, G" a9 J6 Z6 _; j* Ssetup-plot3

; s, Q% `; Z2 ~7 z2 rend+ j( @8 F6 o' S# s2 s+ @) g

# h$ _! d) H3 h, R; M7 t;;run time procedures6 e1 d/ a; Z+ I5 S4 G" Z$ \
7 W- E: A' k8 @% e- r1 s( A1 d
to go
# E; M9 P2 x0 y3 c
+ N. N# T8 a+ Vask turtles [do-business]

1 G; p6 q' j3 k- ]end; `) @* B! A, u4 d, q1 S
+ G! O" K& T* @
to do-business / c# ~* G; ^! p! d* }+ v- m# ^; r

! @1 Q  Y4 j( Q( w5 c9 @! A( O6 p5 ~6 P& u- X; u
rt random 360

6 D% {2 J/ F! `. d! D4 |. Q7 l' D, a$ K$ r# j. z2 s! R# D( F8 ^+ D
fd 1
  C8 N: }4 R$ i  e! B1 J

. \' ?  U. ~9 d, {# R; Rifelse(other turtles-here != nobody)[

: Y3 H% |9 i. @9 W* X( ~0 Q1 A+ f# A
set customer one-of other turtles-here
0 S: d: u2 e6 y  E# O0 Y
. v/ U9 o# A& @8 `
;; set [customer] of customer myself
2 e/ S5 @  T4 _

, w% ^# e3 S; z+ n1 Oset [trade-record-one] of self item (([who] of customer) - 1)7 n. q% n' ?2 a/ O: f+ v2 ]5 L
[trade-record-all]of self
% z  q" |- u4 s6 o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# [5 L  j. T3 z# A
0 ]3 P: B5 I6 K) Rset [trade-record-one] of customer item (([who] of self) - 1)6 Z! e: U7 w/ l6 Y7 y
[trade-record-all]of customer
( M2 u, L. Q2 d# Y
. n# M/ m; X- r# `) h$ t4 z
set [trade-record-one-len] of self length [trade-record-one] of self

7 K  g3 ?9 M7 A+ p) M, D: e
& ]( H% y8 K" W! p9 Rset trade-record-current( list (timer) (random money-upper-limit))
) Y6 S7 B4 h6 [0 Y8 p" Q
" ]; `& N: G& @% ?
ask self [do-trust]
* k  h9 `: k9 Z% ]3 b! {' }' r( w! @;;
先求ij的信任度
# b1 r( S8 h1 A
$ u- n. c6 `1 f7 J6 N  Aif ([trust-ok] of self)6 G' U6 V1 D1 v% C# [. I- i( x1 w
;;
根据ij的信任度来决定是否与j进行交易[& v9 F) G! J; x4 L1 f+ g( |' L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 F+ H5 U9 [* t9 T; d# m7 o" B. M- P" a7 Q( C9 f2 J
[

9 B: c* K. k) W* _( K% o- i& ?2 N/ u' z( a) w# N8 z' l1 Z
do-trade

" r5 s/ j8 }( ]  H2 K0 t8 M5 m
9 [, \+ |! _% t" h" E) p! _update-credibility-ijl

+ C+ ?3 i6 Z0 F
3 g3 j) m0 _. c1 V# t# Yupdate-credibility-list
7 `% v( D' z0 h0 N& a! p
: A& a: H, N1 j, F8 n! Z; i/ Z
: k& }; P6 f$ x$ u
update-global-reputation-list

( X  i8 K5 c" K/ C% e2 ?' \6 `  F8 l# s& ^! N9 |8 Z6 g  [
poll-class

2 m: t7 A9 Y  F+ K
7 k, u* \9 F8 k/ Y. W. I9 }, g$ X" @get-color

- Y  c$ a$ x1 {( C+ @, K6 }
$ i* p# u6 C- R  J+ c]], `2 h" k, Z: A
$ L* S2 I9 ^" N, ^& R
;;
如果所得的信任度满足条件,则进行交易7 k% m" Y; P; M( R7 i: J

/ R, S# k) {3 v. p7 k5 V[
4 I8 z0 {6 u9 m2 }4 a! |8 i& f. E

/ \/ J* n7 \9 G$ Vrt random 360
: g* V' a- [1 D* W! a; A

' a6 ^! l! M; K; n2 jfd 1

: M* d0 @' m" M0 }' @. O" W  ?
  d# o8 {2 W3 ?" b, }2 A]

) p1 w' u) m$ I  Y- N* X9 |4 J
7 x$ b8 [' O0 Q% Z/ t' l+ Vend
! U: @7 b* K$ H- d

, O* p1 L& A: ]8 O% n5 }to do-trust . n5 l% B. v+ }6 ?" O: m6 f
set trust-ok False$ C9 {1 |2 I4 q2 j, f1 w
( R* {9 H. _" z# I% g8 K( v
0 z# v! @# C8 k- a6 x) |/ j3 q
let max-trade-times 0
0 S; g4 v% k2 r  z# Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: F( s( \0 j3 Y. R1 z, v
let max-trade-money 0
1 x; `! h% k; ?7 cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) T2 K0 M2 e1 V- r" @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ O2 f! J7 R2 F3 d7 ^8 g
% M* w3 C2 s; c& b3 v
! R; N* R+ A3 r
get-global-proportion
$ h! i. I; F8 E0 g6 ^let trust-value
. g. q- g! u) W' Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' V0 L' G* @) \4 V
if(trust-value > trade-trust-value)4 y7 }+ x0 ?  D% D/ |" p
[set trust-ok true]
& Z/ r: Y2 `7 m$ Fend
: u: d7 e$ W, ~4 g- M) i" {6 I
( R: e2 W1 P4 T3 Z* P7 Gto get-global-proportion1 ]. S: v( S3 Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 x: P9 P# E2 X8 Y[set global-proportion 0]) N: I* c& q, m, S6 F! [
[let i 0
4 Q. b$ J/ q+ \- m$ wlet sum-money 08 ^7 F; x. y; K$ [6 Q# C. G
while[ i < people]
; t8 F# M  S$ u, c[  j+ u) I  h- H  k7 e. A: J$ f
if( length (item i6 p/ E* B  e/ X7 C; E
[trade-record-all] of customer) > 3 )
4 X1 b4 W8 W* L/ R
[
) r. E- L. A; B, o# {set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); e  ^! _' E, I# o3 Z  P  c
]7 S$ t  |! N' q2 @' |
]2 \1 q$ w: Z( `# L' ]7 h/ D& Q
let j 0
3 u8 z8 X4 V0 q1 slet note 0
/ w  u" W; p" Hwhile[ j < people]+ V* o. l- i0 q( g
[
8 w, L) P8 y" dif( length (item i
1 ?5 f# h: V2 ~- F8 S- r. u3 s2 P[trade-record-all] of customer) > 3 )
" k3 v/ K; c) C$ i% O
[; Z; x* [/ L" W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 r: n1 D  g$ b$ W* K4 z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: R# o  B% X( i$ p& ^; _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. ^. ?, l" c. ]% R
]8 r) X+ C0 ]5 _6 }; f& U
]
5 A2 w7 z( u- N: j/ N* ?( M1 lset global-proportion note5 a3 @) K9 j0 R) \8 X" j
]
& X9 {& A4 }  Eend4 i! o7 V: n( _
* @6 @- l7 N, ^' m) u
to do-trade3 n2 m; I: |! b3 m$ Q
;;
这个过程实际上是给双方作出评价的过程
5 n  M4 R5 B! _! z7 o& Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 x  u& o" |" z$ Z2 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 A$ _. R" P7 \% M6 nset trade-record-current lput(timer) trade-record-current
8 Z# E) d( j2 y, @;;
评价时间
! i  e4 t/ X( K) B4 z$ Z' |ask myself [8 f- C9 F! d. q$ }, D
update-local-reputation
* f" I& v1 v3 C; p! X! oset trade-record-current lput([local-reputation] of myself) trade-record-current
; U, w( |+ u9 T* []) q' d  D" ^6 g1 ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 z9 O9 N8 A( Y) ?% G& e- @/ M, x/ p;;
将此次交易的记录加入到trade-record-one' }4 {% b& l9 s% R' F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 r8 I+ J2 i0 a' M- q6 P8 a  C
let note (item 2 trade-record-current ). Q! E* a% ~3 a" x3 B' f; }
set trade-record-current$ r4 c9 c9 R( c
(replace-item 2 trade-record-current (item 3 trade-record-current))

  d, ?& f( p, M8 Y. {set trade-record-current' H5 m7 B9 S$ ^, g
(replace-item 3 trade-record-current note)1 }5 s0 h, F$ h
3 T2 @0 b' x* @& k; K. B( R' p6 p
" H% r" W  b) Y/ k: f
ask customer [4 J% H% V2 W& |
update-local-reputation
8 v+ t6 C3 p. G+ Qset trade-record-current
! ]3 g& `( t# E5 |- H' b5 ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 R  K0 d& S, |2 a9 p' A]/ f2 R' Q4 c2 v; q7 _9 m

; D" X! Z! I$ ^

4 P+ e7 [0 Y3 I3 U$ V! iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( K8 M( Z6 i9 c% `" e, J
4 ?" O/ [2 P5 z. g8 F" @0 o. _+ I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; ]$ ~; N& T& m& L; T;;
将此次交易的记录加入到customertrade-record-all
, A( R+ f: S# C1 y; Dend; T/ P! h3 s, r, n% w
! A0 ?4 U4 ]- {( G' @
to update-local-reputation; U' ~# Q9 {; g1 z: v* J
set [trade-record-one-len] of myself length [trade-record-one] of myself
, f  I! c7 f1 ~; ^5 `# q; ?
+ E1 ~/ r4 w2 l7 N
0 u- ~/ w1 L& L, x3 F8 m;;if [trade-record-one-len] of myself > 3

  `6 l# d6 `' m( b$ Vupdate-neighbor-total
& ^+ |/ L7 L; k+ _+ G;;
更新邻居节点的数目,在此进行2 D9 V2 f' D3 Z
let i 3
3 |/ T+ a2 j7 k9 p8 ~# i2 G' \3 Ilet sum-time 0
) Q# z! m# R- k$ n5 D& xwhile[i < [trade-record-one-len] of myself]* k( q2 d, T6 t: n
[6 h: U+ v* t4 [9 n
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 W4 h8 o" R1 s
set i* z6 h- Y! s+ \1 I3 C
( i + 1)
7 E  D: K* y( K* v$ T: Q
]
; c6 }' r( q: [let j 3
& V; E: e* _  H0 i$ V" j+ ^let sum-money 03 q7 c( J) @+ m3 t$ i1 }1 b
while[j < [trade-record-one-len] of myself]+ F6 K% T% }& I  z
[8 N0 d/ @7 v  l& R. k
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)$ R& O$ g0 j- O4 m3 I3 S
set j
- {( X6 Y) S, M/ L0 b6 x* H( j + 1)
# n: `3 {- s+ X; Q- G9 Z& e
]) A5 i% E7 M  D6 F
let k 31 t+ J: |6 g6 M
let power 0
$ Q# Q: j5 R" ^# plet local 0
; P- T3 ^, y: o* e0 g+ ywhile [k <[trade-record-one-len] of myself]3 E- i! h: @7 _0 i
[
# h8 p/ L( f& {3 A3 qset 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) & A6 K. Z$ q/ j, w
set k (k + 1)
* D7 l; v$ A( X3 z; ^7 L* E]% ^5 @" C* y9 n* n$ d0 V
set [local-reputation] of myself (local)
( n, U- u& P) eend
% K) R$ |4 L5 x' M7 q4 ~  `9 M  h$ D; a, ^$ S- ^
to update-neighbor-total
; ]+ {4 g! ?: ]8 b: N+ {  W: W$ k
7 x( \1 l8 H, p5 c7 B- ?if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* i! }/ @2 p* i0 K4 ~4 {# q9 a# U/ B- K6 s  u5 F

9 y! M! K6 }" c9 x9 u1 jend
+ K5 p3 I" W! E& L# e( X: s) }; ]- P4 h# c
to update-credibility-ijl ; Z) Z& I$ X! F& E. c! c" `- @
* h7 G8 j( m# A& x' m, x8 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。
) h0 M0 Y7 J, }! D+ O& Slet l 0; b9 X5 V$ {6 i% A) w# Y; u  a* s( W
while[ l < people ]: ?' p: _  _# h" I
;;
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
% P: G" D2 i* B4 @/ R/ s[
  g+ s* }4 E( _0 X& rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 o7 o0 _3 A: z& qif (trade-record-one-j-l-len > 3)
- G+ ?" }, d6 G8 M[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
; R! O2 \0 z$ r" flet i 3. m1 m) h. Q: Y# ]$ v* |2 W0 b
let sum-time 0$ }, v; C3 C6 h
while[i < trade-record-one-len]. E  t  j1 P- s
[0 j, e% C4 z9 e  w8 m' }4 |8 h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 F5 V# r0 ^" }, s# R$ o, Q/ j# o
set i, }3 w& ]9 l! h$ |: U: N9 h* _
( i + 1)
/ A% \+ G  ^) |; }$ p: ^) k
]
, a% ~% Q+ K0 ~+ g, u( L7 Wlet credibility-i-j-l 03 H: N% \) J* X% q
;;i
评价(jjl的评价)
. l) T) w) x2 g0 ^let j 3% `) |! B& v" l1 k  w# M1 b2 H
let k 4  H; a+ _# C5 c
while[j < trade-record-one-len]
& F/ t- B+ |" s) [9 o[
" {7 ~( R$ ]' Y9 O, E6 [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( V& _9 G2 }2 x$ ]) f
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)( h: |- f7 E. C
set j4 Y9 |9 \8 b; a: m; v9 [6 U3 A6 j
( j + 1)

) i0 {* t2 \5 N$ r  e9 `/ D* G: ~]
1 G! R! d/ }8 f; a: j/ Fset [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 ))
0 A, j' b1 {$ [8 i+ N1 g- a: x- M0 I9 T' P! [; K4 o9 ?2 D

2 n: q- a) {# O+ d( S, \/ Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 {, H! K$ @4 n2 {2 \( R
;;
及时更新il的评价质量的评价$ o; M7 }# o7 u& }, Z8 m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ ^+ a3 q  @/ [) p* \
set l (l + 1)' H3 H. l$ ?  E/ I3 D5 I( Q) C
]( v( A* c0 l5 I
end
7 S0 E8 _( p. R, O* Z* k
4 B3 S2 p1 N9 {to update-credibility-list
( }8 ~! C+ L. glet i 0
; B$ Q; O# P4 C! Z2 ~6 p  Pwhile[i < people]! t+ |' @3 R7 _  |. W
[
: o1 _7 [2 M; v. q; w7 d: [let j 0
& b! m; C1 C: X1 tlet note 02 o5 @3 O# p1 N, A
let k 0
1 m0 K. c, b3 E7 Q;;
计作出过评价的邻居节点的数目
) X( o/ ]9 l' K' V  lwhile[j < people]
8 r2 f6 B2 M5 L[
" Q9 Q. P* v+ d3 X/ p' z- V, Iif (item j( [credibility] of turtle (i + 1)) != -1)0 P+ I; e2 \, u0 }: G- y
;;
判断是否给本turtle的评价质量做出过评价的节点2 P( U3 H& t. l. g3 V! ~/ F
[set note (note + item j ([credibility]of turtle (i + 1)))+ A; o& d. R2 S2 n
;;*(exp (-(people - 2)))/(people - 2))]

8 m  c/ ]6 T; V9 ~# t- T5 A- n8 V! bset k (k + 1)
9 a8 N) Q$ p$ H$ d1 Y]! p! I* L6 _3 x. O, J
set j (j + 1)7 Z, Q( i3 y, Y0 l% W/ j
]1 u: A5 g# N9 O4 }1 T( s4 X# d
set note (note *(exp (- (1 / k)))/ k)3 E" i* H* z4 ^  Z" Z$ z% e, @
set credibility-list (replace-item i credibility-list note)0 K3 W9 _8 U9 `# f$ t
set i (i + 1)' ?$ e; r: p, q( e0 k
]  o2 `9 A% D  L9 G0 X
end9 a9 l5 e% ]6 Z3 p3 Q
) q8 W" S9 }! J6 O0 }6 Q: \
to update-global-reputation-list3 r& w% z6 z2 P3 X
let j 0
. q% D# e( J+ o9 jwhile[j < people]$ s% T* K( o0 f- R. S
[5 |. s! n" Q9 f4 j* D5 ^% Q
let new 01 T6 @; x4 b( P& T7 A
;;
暂存新的一个全局声誉% Q1 ]' o" S$ J+ s. }. x4 u8 x, R9 ^
let i 0: O% C) {! C$ \) v% h% c
let sum-money 03 j2 G# k% U, }( r/ o
let credibility-money 0
0 n( R0 V; l% q3 {while [i < people]
7 p+ c; \# `3 o# e1 v& _2 F[* {/ s9 m6 u$ A& \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) ^; F. Z4 E4 E+ N4 {8 U0 g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) A# j- r/ z7 o" S' _+ F4 W% L2 ]
set i (i + 1)
: v: ~3 N1 M0 X7 a# z  O]
7 X& ]- D/ }$ F1 W9 clet k 00 }4 u* P+ Z1 y
let new1 0
2 N- q& \4 H' T- |1 [while [k < people]% b4 ~. G* T2 J  z
[
# C# C# n+ A; Q3 \; H$ Tset 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)/ K' X2 @- K8 X7 y
set k (k + 1)/ y' u3 J9 `- H- Z& K5 ]
]9 H# X( h& f- w# |$ e4 J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / C/ n0 d- R$ N; I5 ~7 i
set global-reputation-list (replace-item j global-reputation-list new)/ A2 o% K$ N0 K! w8 _( l; E
set j (j + 1)% Z- b$ {, l% v( [4 [9 K% }8 y
]8 K# Y4 X2 f3 U  s1 Z3 w
end
5 ?* b% }; ?  W' k9 V& c6 p- \9 Y: r, ?3 k+ Q! g  Y

  w$ ^& K! N& C1 M  s2 K0 p
" c- i6 h& M% r- L6 {to get-color
* e4 t  Y% `* L+ ^0 Q1 d
0 c, Y) T6 k6 X7 yset color blue

2 ^6 z- v7 ^. d4 X7 h5 S% Iend1 H2 l% w  j& g4 z6 r- N7 R3 C

4 r# \+ D; k# w  F) j" Dto poll-class
  x, T! Q+ C1 W* ^9 V4 e1 {- Bend
+ Y: [. r' H6 W9 j
1 X4 t) q$ |2 R. g' h- Oto setup-plot1
0 ~8 }7 A' h) o5 X5 k
( K( m1 j  k+ ?- n. o$ ]; Bset-current-plot "Trends-of-Local-reputation"
8 [( @$ ]: d8 y$ Z+ }* Y
0 W- P3 ]% J, d( ]/ D
set-plot-x-range 0 xmax

: [. ?. U: b1 F: }3 {2 q4 L5 e- p9 l7 L7 p  J$ j( D! z
set-plot-y-range 0.0 ymax
' w" P) S, M4 ~- H( ~* E6 S
end
$ q% j7 x% n# Z: Z8 h4 M
, K9 V6 i& R4 N, xto setup-plot2
3 M+ f) k: I7 t
- V( M# W+ R$ C7 z  F5 l; Pset-current-plot "Trends-of-global-reputation"

4 u7 n/ W5 F. K$ s
8 i" o& T$ u5 \7 k  K* r5 b! N" Q; Vset-plot-x-range 0 xmax
' z5 O' L' o* K. N7 G* v, D

$ R6 }3 M% E8 J7 {set-plot-y-range 0.0 ymax
. Q, K& q0 b% C1 x% |% o& m, M; T" j
end+ k  C8 L. i: L! U+ g

7 r; {0 J- o' H  |6 m+ h% pto setup-plot37 T$ d6 ]# e- D' s% `0 F6 @; L) x

/ K0 P) g% l) [7 t4 d/ M+ Qset-current-plot "Trends-of-credibility"
0 F# c5 n/ _; |" E- \8 l' w) M
0 F; T! }' T0 c: u
set-plot-x-range 0 xmax

. R9 Y$ H( a! N. E' c6 }' G9 M
* p! c9 T/ @) a; w6 ^* vset-plot-y-range 0.0 ymax
- Z& |4 D, \( D; b% q! p; H
end
$ N- {7 n) s. u5 @; E% H0 {. Y+ x3 T" P. U7 S
to do-plots) [- [6 E" r6 A" m& t8 Q
set-current-plot "Trends-of-Local-reputation"
# K4 p7 X8 B1 ~* C; w. aset-current-plot-pen "Honest service": x( v% s6 q7 u
end3 Z' V7 f6 p' `2 M+ ?, h
1 D; t  V/ b6 o( {% z9 A
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
) O. j2 D$ [7 ~( U0 O1 e! k& w: J; n1 |  j7 L1 ?
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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