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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:
( ^: |. r& t& u: N3 z7 f( nto do-business . n7 b) i8 f5 }0 z* _' d
rt random 360
! U/ k( m% f3 [& w/ H3 [) j& P& |  N fd 12 Q1 M" z) V' q; j& S0 P7 D
ifelse(other turtles-here != nobody)[1 j5 Z7 l8 I! I6 h. U
   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.
( }: h9 A2 F' e8 F) `; ~6 ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! M% n8 n8 X( K+ i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  h  N2 O5 b3 q9 ]- }: u" F* M
   set [trade-record-one-len] of self length [trade-record-one] of self
) Z+ D/ w4 i' ^3 H( O' X7 D/ f3 i   set trade-record-current( list (timer) (random money-upper-limit))
+ l! s4 L" f8 y3 @, X9 V9 w
) e5 n! L# Q) n+ h" `* n) }问题的提示如下:/ W5 r' D* v" D4 C# P, W7 k+ x
* |3 r: ~. j- {9 H' q
error while turtle 50 running OF in procedure DO-BUSINESS5 v$ o1 v8 P; M7 g
  called by procedure GO
! X& _  e  ^0 M. p9 q( o0 t8 QOF expected input to be a turtle agentset or turtle but got NOBODY instead.9 y3 X1 _( R) e" y
(halted running of go)) h6 T1 J/ t: @, h

6 ~9 e3 M$ }! e. I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~~
! Z6 o$ _& e+ D: 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! ]: Q( Q- r7 X- Z7 V$ ?0 p! a
globals[/ Y" d! |5 V0 I( h
xmax
+ o+ K- Z# r/ F7 Gymax
  l" E* Z/ H! bglobal-reputation-list2 `, o# z6 O: V3 Z
0 d! k8 F% I) O; G+ ^0 g
;;
每一个turtle的全局声誉都存在此LIST* q. \( y. s2 A5 }1 O1 o0 a
credibility-list
- b5 V; n3 q# y: B;;
每一个turtle的评价可信度8 x  w9 T: B. B7 a7 p# D
honest-service
8 Z; p, C; y" \unhonest-service
' w4 B! ~1 F5 J; q) c$ E2 {oscillation
! b- w9 F% h2 K- qrand-dynamic" L6 E4 d7 a4 o& G# R1 l3 P
]4 f- ^' h% A& Q) ~% i, x

% {- M, v" ^  w; yturtles-own[1 \5 ?2 D# [* d0 C7 w
trade-record-all
5 {: r8 v% s2 r# t  n;;a list of lists,
trade-record-one组成. |" ?4 |( z7 a9 V9 ^" Y- x( ~! e
trade-record-one
2 a3 E, m$ o6 g) x" @;;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 [% t# w- W' v* |2 u
5 k( g% @, y9 c4 k& v
;;[
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]]: S# p" `5 o' Q* ~4 ?
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]' {  l3 [6 z& g. e6 Z2 B  \% u- @
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
, H; h; i- J5 Q/ R: v$ lneighbor-total3 T- z3 v) N  p
;;
记录该turtle的邻居节点的数目
  N8 i5 C; C) y* [7 m, strade-time
: I2 G" M3 w, a0 I;;
当前发生交易的turtle的交易时间! k2 O4 ~% D- t8 [% B* N1 m
appraise-give
* w$ T8 w$ |( R: t% y6 L# p;;
当前发生交易时给出的评价( h# z5 _6 U8 R8 i% L
appraise-receive
  e, V  N" T# E6 K5 J7 ]6 p" {/ E;;
当前发生交易时收到的评价3 i; o2 E, Q6 X7 K, F4 N$ N& \4 e
appraise-time
$ k- x0 @- R/ `5 n9 m;;
当前发生交易时的评价时间
0 h1 X& |) {5 {) d! Q* d% ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ x6 F7 C' N" S1 s3 ttrade-times-total1 A) v8 w+ S+ d/ E( G) M6 H( G
;;
与当前turtle的交易总次数) b; z  s6 l& U$ Q
trade-money-total5 {6 X2 V4 `7 j3 Z* L. i3 \
;;
与当前turtle的交易总金额
: ]* Q2 Z4 X: L! C# `local-reputation" Q1 a/ `8 ]# F! K( S
global-reputation
% ?, P9 ?$ i, s7 {4 \credibility
" @3 ]1 T3 @% z5 v, I) k  X# R;;
评价可信度,每次交易后都需要更新
! Q2 I7 Q/ `7 |credibility-all
: p! B, p9 E3 F;;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) j) U, o$ b- S9 E7 ?  v$ \
5 Q2 A% H9 R4 i1 L
;;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
! _( f- |9 C: l- p$ U7 c: L# Q# x7 Acredibility-one  H. I3 e! g) ?+ c3 o5 g, 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people
# A$ X0 c( [4 D5 Y, hglobal-proportion) E: W( S* v7 i' s
customer
4 y3 E! c2 D- W; P. h- lcustomer-no. J/ r4 Q+ ], c" }0 T
trust-ok
+ V" D* Z/ b: n8 htrade-record-one-len;;trade-record-one的长度! ^4 K5 L: E0 f( k. t
]
( p8 ]4 q: n1 q0 O1 @- k: W5 @4 `$ \. ^8 C2 K' A3 D
;;setup procedure
+ G) X; x( O4 M9 \
2 e! h9 w+ O; D8 u- @  k7 S, [# Gto setup  V8 t2 G# D7 \, o! \$ v

& F4 ~$ F$ n. E" ]# u6 Hca
9 ?5 R0 v1 K) G2 Y9 _  U& t) H1 _. G- b

& {8 \) w! N9 _1 n4 f/ Q2 o0 oinitialize-settings
, m" y# w& J2 J: G

# J+ D; V& D# p' U( scrt people [setup-turtles]

( P7 ~( P" E5 q. W5 T  _  T9 h0 c) w- v( s7 R! u+ r7 K; n0 P
reset-timer

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poll-class

1 C, p- t* b! f2 B% L( o4 s% {. H( a$ Q* z
setup-plots
6 Q, A% J. a2 i/ k! |$ H9 F

; _+ |: b) `6 `) A8 F; gdo-plots
/ o  K4 F! l+ N' E* a0 D1 Y' M! U! @
end
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to initialize-settings% s2 y1 X3 e+ R  w6 ^) V
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set global-reputation-list []

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set credibility-list n-values people [0.5]

1 m$ r5 _" Y$ e4 N* |2 [
  y3 i, a0 E( fset honest-service 0

0 u& l+ Q: T9 J) O$ D& b6 G  Y( U) V. c2 i
set unhonest-service 0

  y6 l" _& H  m  C1 k9 g, V6 c2 i
) i$ K  o8 s7 y, Vset oscillation 0
% P& |& |( P( c, s/ G6 |

6 D5 l( W8 m( z$ H6 ~/ F% ~. Zset rand-dynamic 0
" \5 c# t. ^2 G! g& _
end
. j! u& x( F( `2 h, a# i
8 E( x; F- \# U1 B1 ^7 Hto setup-turtles
1 {& I) {+ a+ f! dset shape "person"
7 s# U) k4 O& Q5 Hsetxy random-xcor random-ycor5 n, m& S4 d) E8 R; I
set trade-record-one []
" g# _# e" ^0 v2 r1 S, E; G+ I
: b: u" x: k* h0 w
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 `3 {8 ]9 o( x5 h, ~( I' m* X
7 n& H! O6 |# N* P
set trade-record-current []  w! K- x7 M- ]8 U9 `! T, f
set credibility-receive []& c+ m* j# v$ N+ W
set local-reputation 0.5
/ ~1 E' h' R0 s) J/ h3 w( I. L- uset neighbor-total 0* |9 F# L7 u5 i/ x( ^( t- Z; M% N5 R
set trade-times-total 0* @1 O! A/ l3 x( y- a  E
set trade-money-total 0
4 ?0 s: a( u6 Eset customer nobody5 m$ ?* D- b7 e) [& E7 q2 o
set credibility-all n-values people [creat-credibility]! K# u* e$ P  u5 Z( k9 S
set credibility n-values people [-1]& ]* W* z' A0 E
get-color  K% C+ V. a5 P
) i$ ]. Y: j; s
end
$ Q- a! e" Z$ z1 R* p3 E# ~) P9 |/ S, U3 S* ]
to-report creat-credibility
4 G! ?% B( k2 g: V  O% nreport n-values people [0.5]% F5 m, s6 q7 ~, ^
end
: r# ]- S! Z$ z  j) F0 ]. Z( R4 h3 f4 q( p+ c" l3 x
to setup-plots/ e5 w. }7 y3 V- d) c

. S* b* q5 g* P/ [2 \* z& z, Jset xmax 30
& U$ m+ O  N( u- E/ z
; o+ x6 {0 N+ v  B) x
set ymax 1.0

7 d7 z4 a- j' \8 j. N$ @/ y: z0 [) s7 `+ L
clear-all-plots
* Z+ t" C9 z7 m0 d9 A8 w$ J
8 R! m  O# k" Q! R, u; J
setup-plot1

7 @3 L# G6 y- u
( \0 t7 s9 K7 ~- O% S/ Bsetup-plot2
& `/ }( ?* k' _

6 J. T+ g, B- J' c7 E( h* b  L4 Jsetup-plot3

6 a9 Y+ J  w. [) send
( }, Q3 O- l9 F% {& {- X( [8 u2 i5 O: [: O3 z
;;run time procedures
. i$ h: k! m8 i8 v7 b; b3 B
# P* w7 i7 M1 t' zto go( e& j4 p( G* D$ L
1 G6 M9 r" a- D/ e' `+ h8 ^
ask turtles [do-business]

9 E* c9 C; M$ u4 D% R0 B4 Iend
5 C" X# Q" Y" [  w, m0 [+ ]! }7 p, J8 \0 h2 G& o7 u$ V
to do-business
! n" {1 L* t! r( C; l: ^& H) X
  l; k2 x# G0 c# p

! k8 u- S$ E# A9 P% C& lrt random 360

1 j& L- d- F# E+ X' [# S$ ~5 z
. E# v1 }3 ]. f8 {& nfd 1
. X4 G. T3 k4 s& \7 a" x, ^
4 q9 p* q- k3 a4 ^% Y4 z' `9 P6 W
ifelse(other turtles-here != nobody)[

. l* F- g: w$ ?$ F( `8 y
! i" B  T* g$ o) Uset customer one-of other turtles-here

- a( n( S$ ]( C% F
1 t: b; c9 l+ K4 q+ K: P: u;; set [customer] of customer myself
& |5 ~5 Y0 ]; I/ Z; Y  l% q

4 E. L0 ?! {7 rset [trade-record-one] of self item (([who] of customer) - 1)
  B9 a+ M5 k* ]9 K7 E4 W" @[trade-record-all]of self
- A8 d- k# w: [, d/ p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) a: f' ]2 \% e! Y
( N6 V% t* ^( f7 d, B$ L& Oset [trade-record-one] of customer item (([who] of self) - 1)! W0 [3 E8 \) d2 P
[trade-record-all]of customer
2 q) g' o5 V. G9 Z" F' K  k
7 _" b# Z$ {9 B6 G( |
set [trade-record-one-len] of self length [trade-record-one] of self

/ O' ]4 e0 G- f. J9 l* t' |2 {& U  [- k4 L3 I, W9 ]7 L, B4 s
set trade-record-current( list (timer) (random money-upper-limit))

/ A3 D3 c7 w8 j& Y% @" |
/ h0 s# h7 O  T6 r" q- u& K0 b3 Vask self [do-trust]; E; M( R' e4 e  T/ X$ h1 U
;;
先求ij的信任度
9 J  ^* ^, K4 q1 V1 o- _+ }5 f5 J1 V. }
if ([trust-ok] of self)# w0 E  b5 m& c: z7 d: T
;;
根据ij的信任度来决定是否与j进行交易[; h4 g1 a) M5 V1 G5 E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. R, o; D8 f) [7 u& Z9 P* p, j" s7 X0 g4 k6 `; Z& J4 Z
[

( x7 ]$ ~$ P9 |9 J5 U0 k- @8 b4 {) x# {  v0 p& k! f5 `# n& m
do-trade
; N. m! O+ ~$ R
, |  ^, H$ a) a5 a7 B1 y6 X% ]
update-credibility-ijl

1 m( D) ^- f# m9 _+ t- T7 {/ D6 Q4 A2 c6 }" p! P* n
update-credibility-list+ E5 R: b5 J5 e

+ Z+ v' s6 _6 ~! w6 ?7 w, v; i
update-global-reputation-list

; k8 ?2 g1 s# e/ a6 P
5 X2 l) L! a+ upoll-class
4 b! A! o' x! k8 v8 h8 f

" b1 w/ e* `( ~! d3 ?! F4 S. s' aget-color

: Q; M! D6 X& g" Z* V8 j
! g3 S; T. i  k; U. q; O7 Z" T]], N3 P. e% k- a3 O
5 t2 P: m/ v4 z% T% G
;;
如果所得的信任度满足条件,则进行交易
1 f9 {, U$ `) X: Y4 R: e0 y; w: [% _( V( L" f- M5 x$ u
[

& y6 m, i( r7 w0 x; r" j) m3 m! J$ B9 @/ f3 [! [
rt random 360
) X- z/ o3 L& |4 m$ Y
5 A9 o* b2 V. d$ l9 u' U) }
fd 1
& U' q9 v% ~  A) s5 t0 r  ~: a3 n

% n0 d' Z2 s- o/ U1 P5 K0 a  I, g]

1 P$ @. e$ H2 N  g1 M4 @4 p+ X, A# q8 I  E
end

0 J2 L" o2 @" m& X) @& K8 O# L( Z; y1 J- q: K0 `$ A+ X: u& C
to do-trust
& `, h( S; r5 P$ m3 G" Mset trust-ok False1 o3 f+ F6 U0 ]; [
' [) A- ?0 k" H( C

4 A4 i( F& C# K$ P9 Qlet max-trade-times 0( J; X8 Q- M6 Q5 \* }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! j* \0 u  e% ?$ W& Wlet max-trade-money 0; o  k, r  `$ J! e- N/ c7 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 b. f+ V* ?5 ^3 w7 D/ D! a
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 g0 _/ }8 Y( [8 [. O
: z  t% ^; m' {0 ~' {" j% G

' `" ~" ^9 b! s, K- ^get-global-proportion% C, b" |/ r* O: ^
let trust-value9 w% f& v$ ^5 g8 l# V3 n+ v
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)
$ a4 Q! d8 ~6 R! a3 H: M+ \1 g' d
if(trust-value > trade-trust-value)
$ d) a/ \; x4 v: D1 i, m[set trust-ok true]
2 P% e7 m9 l4 F" f9 tend1 C9 }! Q% b( [% M
- w3 e7 j' s2 Q8 e
to get-global-proportion: J1 Z0 V4 {8 J& L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), T' L, u6 Q# G' j/ I
[set global-proportion 0]
) z; h3 ~! l' h2 F' Q+ f4 Y1 u[let i 0$ A, {  d( ~5 z0 h$ [" b
let sum-money 0( P! A- ?5 @/ N$ ~: B9 U8 b
while[ i < people]
* c( w( W! i8 G1 m& h[/ \9 M/ i, h9 `' M2 R- A; c
if( length (item i4 Z1 {; S# y1 f2 e1 u* B5 U
[trade-record-all] of customer) > 3 )

7 A3 x% `6 y9 a1 t[. n9 x" S0 e; y: ?0 {1 T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& p- }+ t* X  G: X+ |' n: W* g* |]
1 {+ t8 g: p. `% o8 |6 e- t5 T$ p) H]; J# I3 |8 |# f4 I
let j 0
$ w6 g0 _# u1 {" V- ?' ilet note 0. v& z' \1 t% k. O
while[ j < people]4 E2 D( z0 a5 n/ R4 E
[: {1 m! j9 f% X7 i
if( length (item i
7 ?0 u6 r6 `% H9 c4 x[trade-record-all] of customer) > 3 )

1 N( ~' s7 T. b) r[
) R2 y& d5 J8 K( `3 s" E7 Mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 ~, [( M0 s7 f( C9 M+ X; d* R# I
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 D0 G; r% x4 t, u6 I8 L' O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 E! w3 r, m0 u) i4 L- ~]$ g" M& I2 B% y8 K2 V! g- c& k1 Y
]" p9 |* I, T$ Z  G/ ?$ }
set global-proportion note
" T5 o3 I7 t% g5 G  P) L6 q]
9 T5 Y' @0 D0 Iend" q+ [! t# c; |4 J' }1 a: d, N

, U, S  e* q$ _$ U& K1 [. Yto do-trade3 R* U2 `5 z" o7 r7 Z+ R9 |
;;
这个过程实际上是给双方作出评价的过程
3 z- Y6 W( |3 }2 O: {( Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  V. ^5 d6 A9 |3 Y# A* Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. t- R9 u" w! ~. L$ s$ ^
set trade-record-current lput(timer) trade-record-current) s4 b- z( B3 y  j( B) X1 B
;;
评价时间
" x! P. c+ M" ?" c+ r0 Wask myself [0 I& C/ Z8 O- m& T$ d5 W+ k
update-local-reputation  V- P; @6 S! L! E$ x
set trade-record-current lput([local-reputation] of myself) trade-record-current
* d& V' @7 e9 Q8 D+ k]
5 f2 w, `6 D0 Aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 }. u. _5 Q% `5 c" A' I;;
将此次交易的记录加入到trade-record-one- ]$ x; [  R3 w% R: I) S5 q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 q/ w! U$ e; {$ J& b. b
let note (item 2 trade-record-current )
% L1 s' x4 G& dset trade-record-current( U  a& K5 o/ m% h  m
(replace-item 2 trade-record-current (item 3 trade-record-current))
# A& Y+ Z' x+ x$ g4 C5 B- ~
set trade-record-current# V1 p7 |/ G4 i0 d
(replace-item 3 trade-record-current note)3 ^6 ?8 A5 d& p: v) t  ~+ k" x- ?1 r, q
2 V+ T5 r- ^6 q8 p* p. a# m) t9 C+ B
9 B$ @& x3 B5 M" K
ask customer [
6 T- e2 ]8 d9 Uupdate-local-reputation
/ T6 S* W5 g: ~5 H; jset trade-record-current
8 J+ a  a2 x! X& {& C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 \; Q. v( c! w]
9 ~) f: e: Q! i3 }- U' H0 z
+ L5 ?! e9 x; m' p& A0 ?

8 v, ]$ S7 g: `0 U. p6 S7 Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% [. c3 l$ P# L2 @

$ U* M" y$ \% B3 Y6 Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* ?  R5 u1 p" _$ N
;;
将此次交易的记录加入到customertrade-record-all
% p; k) p  [" D" l7 F, o) dend
0 w2 [6 U# ?% _
3 z1 @7 C& ]( s$ n) L- \+ [to update-local-reputation
4 M# ]3 a0 w8 k: m/ Z+ O1 Fset [trade-record-one-len] of myself length [trade-record-one] of myself
+ d8 z  ]! I& s" c. k3 e
5 \6 B, N3 W! i1 z* `# F6 }  d) S3 b! Q% x& `0 J- a- ^' Q
;;if [trade-record-one-len] of myself > 3
& Z0 F7 F; s2 |
update-neighbor-total5 E2 q; l# Z; ?8 }
;;
更新邻居节点的数目,在此进行
; K% G- k0 x( y  elet i 3
: W) y' L& V) R2 k# s' L* ulet sum-time 0; d: q. y" x8 b- Q
while[i < [trade-record-one-len] of myself]
# P/ d6 i) E0 Q8 s; N6 i' d[( L- d( }  e: Z" g& G. |" g! l
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& Z, Y) r5 I0 p  s: P
set i$ t- p% F0 Y$ E. s, v2 F1 u$ t
( i + 1)

' |4 l8 I, M2 I4 @7 R; V2 J]3 q  L# Y8 J. C$ f
let j 3; g8 l9 P% n3 v7 M* b: X
let sum-money 0" L& E9 S0 j' l
while[j < [trade-record-one-len] of myself]
: K5 P1 N( w, V- z& E; i- T3 h4 R[
$ k. D- A5 ~, e  _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)
  S5 ]' M* q0 `! `3 pset j
/ T/ w) J; Q; R7 D* @  k( j + 1)
1 M; E. p% n' S/ Q4 z, u
]
& y3 X' w" t; n$ |let k 3
5 A4 A* C6 `: `5 t, n1 Jlet power 06 ~' B- `3 ]% X2 G
let local 0
8 o; i8 j5 t2 W/ O1 ~while [k <[trade-record-one-len] of myself]
$ K7 I9 F/ k" {7 c[$ W4 X$ Z$ z( b
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)
5 ^* E4 v1 @+ pset k (k + 1)
" u; }3 s9 J$ l7 m7 y]3 ?  q6 e; s7 g" a7 q
set [local-reputation] of myself (local)
- H0 C% _5 r. t8 mend- i* z# R6 I9 M2 Q# \7 a5 Q& U$ e
+ ?  ?! c# U$ A  M4 B1 k
to update-neighbor-total
, G) G( F4 }& l- _" ?, p$ T% N4 a, c4 T- @1 |& e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  B) }; Z  ~( t$ ^5 x% l
  g3 U8 V7 h2 ]( j6 s4 J: D
$ r: j2 B& ]/ }
end
7 r% s+ Z# ?" a: S' v6 ~2 {" p6 H2 Q1 l$ r# o0 W, a% |( _
to update-credibility-ijl
# X0 U% t( `' a- T, C, }
" H  u; B7 e' K$ Z$ N8 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。
3 E9 l9 l; `% M2 A; Flet l 0
7 E. |/ ?4 g% q5 U& m  Xwhile[ l < people ]5 z4 a& K* Q. o6 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; Q4 p' r% Q4 [; \
[
& O" b! K3 G5 V, [: R3 ^' Tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 ~: G6 K/ v6 s. C  j9 bif (trade-record-one-j-l-len > 3)
" I0 ~+ v! {8 b* 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-one7 E' A: @, x! v- B
let i 3
. _- d2 f/ ~; H2 {* y( Q, r( t8 x2 }let sum-time 0
* [) f# E* l/ Z! Y+ b" W) L7 u$ gwhile[i < trade-record-one-len]
! H4 B" R; ^2 v! O[( k+ z7 |, U1 z9 M* I" I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  A# t9 b$ X& V# b- B. p- Gset i
; Q7 y1 z4 N, q7 O) P3 j( i + 1)
; m, ^* u; O) W9 {1 `$ U
]- v0 |6 ]$ d2 F
let credibility-i-j-l 09 {' _: Q8 f: j7 h# ]7 n3 n& [
;;i
评价(jjl的评价)
( j9 j) H# b2 v8 o9 ~let j 3
3 H1 B+ b1 S  L- M6 O5 olet k 4
9 @2 ?% t  h4 L4 s$ I# B2 t9 C- f1 Vwhile[j < trade-record-one-len]
, [" \* M( U- R! h1 R# e[# V* ]' g# o  F% K5 d1 M. r* B1 H, F
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
. i# L( E  X: d1 f8 J6 [1 lset 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)
7 T7 U: I' C" {6 v( w3 n! u, Hset j( ]7 ~  x( `9 T& l1 p1 X4 b+ f
( j + 1)
) ]& G) u/ y' r5 e
]
$ {3 E: S9 ]" F+ D0 |1 P- jset [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 ))* W3 J/ b+ q( ?9 q* R
- _1 J6 n. L" S, ?1 p) ?
1 S2 `% t4 x8 l; |
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ J1 P+ N1 z0 _; _7 |
;;
及时更新il的评价质量的评价4 x# k; e( x! [8 a& o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 X( F. x: T4 z* {* oset l (l + 1)$ |( u3 @9 R# `. C
]
( {% `  m  M' k) b6 B* Wend& ^5 \2 f4 U- N3 `6 k( H9 H% f$ a

2 N* K3 b+ W6 F: R6 ~9 o" gto update-credibility-list0 \8 ~8 n4 p; w. \3 [+ i$ R
let i 0# `, H. K2 }& e; P1 i
while[i < people]
* \& A& c: j( O, d5 u/ t[! [. I; T7 U6 n7 o  k" k* P5 ?
let j 0+ @% i1 D" l/ R. _. G
let note 07 d! k, b& ]; s$ z1 H2 D7 O& t" I
let k 0
' y5 e+ M. \6 B) ]3 T;;
计作出过评价的邻居节点的数目2 F/ }/ I: L# |* n
while[j < people]+ N. D1 |& ]9 U4 p" F6 g9 g9 p
[7 Y2 R$ @4 y, c  a2 E
if (item j( [credibility] of turtle (i + 1)) != -1)1 v# T4 V% N6 Y
;;
判断是否给本turtle的评价质量做出过评价的节点* ]; }+ X8 H: _
[set note (note + item j ([credibility]of turtle (i + 1)))
5 U4 q1 r, t# N7 _;;*(exp (-(people - 2)))/(people - 2))]
( W5 Y/ k. \0 M' F9 \3 Y, A  Q/ S
set k (k + 1)
* ^- D) @/ ^1 p- A* q$ L]) V1 ?8 h. \! W! r- s5 p6 G
set j (j + 1)
  D; J* K& M3 ~3 K# Q6 {) `/ {- s$ S8 ^]
1 l* Y$ X) C- F' I9 o3 M7 d# S! Pset note (note *(exp (- (1 / k)))/ k)
, l6 k7 g# D! \4 T$ Vset credibility-list (replace-item i credibility-list note)
% W  x* v- L8 ~9 uset i (i + 1)6 C! m% E" {3 @5 X
]
5 A% ~# i* Q% ~( z# {% Gend( D  D& t3 G+ T" x3 A

7 l1 U* G# C  x( Ato update-global-reputation-list9 p& U% _7 V1 f& u1 s1 `& A
let j 0
( |& T% h3 ?/ B# z& G# l6 Nwhile[j < people]
. Q9 C& j+ w; ~# L4 U[+ [9 f- Y( i) m7 A, G" o9 D; ]
let new 0
+ s- X$ T3 P* s;;
暂存新的一个全局声誉! E. s. P0 |; V! R6 ?: b
let i 0) P8 \% \: r' d4 w9 \7 P
let sum-money 05 x# o- N5 C( e
let credibility-money 06 C, W# L% n1 {6 p$ ~
while [i < people]. B( j  F' A8 z! z2 x
[
5 D/ B/ b. X  {1 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# b6 h6 o9 Z+ y4 ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ |% f( F7 r+ e; q; Yset i (i + 1)
2 K% [" P6 Z! S* i. F. V]
" I' a1 D* s  z$ d* I& z2 flet k 0
# ?& n7 U  Q% {let new1 0/ Z7 z8 A1 X( O: |4 P# o% O. m
while [k < people]
/ ]7 e6 G4 p. Y8 E$ u1 S0 A6 w6 G# X[
6 U: K2 P3 y, _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)
' Z( a6 ]  w+ ~' D  i) P$ zset k (k + 1)4 g; }2 e9 \$ K2 `# p
]& h; m* U, H8 [+ u# a0 R* q+ @
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % W1 k3 n$ s7 Y5 J5 j: B6 z
set global-reputation-list (replace-item j global-reputation-list new)
, e- D; I! [6 ^& V6 Gset j (j + 1)# v! l: z& |; X- m9 M1 L& }7 h- Y' F3 D
]6 X  q$ q" j( A- i7 x
end2 ]6 m) I! D8 y
0 z( m3 B, G9 c" e  ]
( ^- z+ S0 y; P2 k
  j( f5 \  m6 _
to get-color& J& j# j6 Z$ u) y

( J2 q7 A- T0 A- {set color blue
3 X% K2 Q' o# _- m
end8 |  t  d* Z/ L6 x9 {
' y! U) e) F2 f9 L
to poll-class# y0 z! _- B: [6 o! ^# y+ y" J
end8 p# N4 e# b* ^0 U6 W; v( a
/ b2 `6 B: S# s% ?- ~
to setup-plot1
5 h4 M' M5 |. r+ b- p# \+ Q: Z9 D
set-current-plot "Trends-of-Local-reputation"

: d$ s5 K/ j1 i9 t' s$ f: `6 d/ @1 r" y& H. ^2 }9 \7 `6 I, D
set-plot-x-range 0 xmax
  o+ s6 D% g/ R7 B: \
. d1 H) D; A4 [) ]" T/ |
set-plot-y-range 0.0 ymax

. \8 J5 ~# s: T% b5 lend
% j6 J5 v+ h- o& s3 j* k/ _2 H
0 r" Z+ Y- o# j/ m* f) dto setup-plot2
: w3 y/ ^$ d. X* ^7 B  @5 P) b; {6 Q* q* y7 s
set-current-plot "Trends-of-global-reputation"
7 E" _2 a9 w! \- q* w2 a
+ u: X8 Z0 j1 N1 C
set-plot-x-range 0 xmax

. t+ W9 O7 y1 p" `" z' E
! L" `; S! q& ~6 C5 j* O9 xset-plot-y-range 0.0 ymax
5 _/ q. q, m6 P' j! M
end1 b# C5 X+ P7 d+ k
& H8 m3 w' t8 Y7 [+ \% }
to setup-plot3
2 p7 N1 V4 U9 z+ r- h5 U
5 p. e) o# L4 o  y- c7 i% H) Qset-current-plot "Trends-of-credibility"
' V! {7 D. D! V- B7 o& f

& Q; y$ l# a; B2 Dset-plot-x-range 0 xmax
! U+ G3 V3 }* c! }
. v' {8 s1 `; n, {7 e: `+ O
set-plot-y-range 0.0 ymax

& \7 E" y4 A  [3 q1 ~2 R& R, \end( w, z0 v+ \6 }- \. h0 I" e

3 R1 ~4 U* a! {* m* ]/ rto do-plots& b& o$ w9 ~. z3 x
set-current-plot "Trends-of-Local-reputation"6 \2 i" p) u- X( z# p( x
set-current-plot-pen "Honest service"" }2 w' E) i. a  @# Y
end
, H2 d+ e( U, M2 a( q
! t/ d  E1 a; E* F5 b' E( C; I9 {[ 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.
- A2 ~- K; z9 Z  c: s6 v4 O& G9 D. D4 E- K
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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