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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:3 z  o$ ^  i, E# b1 E8 p% f
to do-business
* R* [+ p0 R! e0 O& g7 _ rt random 360  T" M" d/ \& E5 r7 D; v& l8 R9 _
fd 1
/ F: e1 P9 m! |5 {; }1 Y ifelse(other turtles-here != nobody)[4 N: n$ f- Q6 E. a) M$ I7 }/ 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.  U3 x" S2 _0 a7 `! H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' A7 p% O2 b4 @- m2 \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 g5 f# C) B4 a: g   set [trade-record-one-len] of self length [trade-record-one] of self
! Z5 r$ a5 O: ~, L   set trade-record-current( list (timer) (random money-upper-limit))
/ X' c3 n! E% m' w  J  m/ D- A- z2 C$ n7 H' R1 B( _3 ^5 ]* g! }
问题的提示如下:, C' ~' I% ?8 Q
0 n% j; m* x4 G0 q9 I0 V, d
error while turtle 50 running OF in procedure DO-BUSINESS$ D' t: F. Z2 |* h% Q' v
  called by procedure GO
) {5 z/ {/ ]# e. b; I6 ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 Y, ]. N* ~& t  I1 {" ~7 O- v
(halted running of go)6 c, G/ _& f# |9 e8 C
, Z. k2 ~- e# G* o5 [: o3 d1 }
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~~
( t) s6 H9 u& F; U' q' a6 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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参与人数 1仿真币 +30 +2 收起 理由
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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- d, Q, w3 C" F# h
globals[
" ]" \' G7 Y3 yxmax
5 C/ X  j5 L$ jymax
1 H; z3 t* p  b1 [global-reputation-list( x: V. V# t7 Y5 `8 y" y& N( s+ c
1 f8 A) M8 a5 O  Y
;;
每一个turtle的全局声誉都存在此LIST
* K5 F" W" j( W9 B# Fcredibility-list
: j6 I) T8 i/ {0 w; F5 P8 C;;
每一个turtle的评价可信度
  z) [. j1 W! u% A# {6 [honest-service
: Q8 a  W8 R$ M: junhonest-service
, }' J1 l( z# d0 B- \' j3 |! ^1 toscillation9 v0 _) b+ O6 g2 ]. i# m
rand-dynamic
" S0 t6 J, R! u( I8 `]
- C7 i- _2 e$ l  i- v& L* |! i3 W" X; J
turtles-own[
, ~$ {  I2 v) R9 D/ s: Utrade-record-all9 M) d4 G7 v  P4 P1 J
;;a list of lists,
trade-record-one组成) ?. {! E9 {0 J* [
trade-record-one2 N" t( U8 B2 q3 w$ b7 D9 v. Y! y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. O# R8 M  y2 R8 X- }7 _

# E2 ^4 t  l+ H9 b- t% Q5 z% e' K;;[
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 S! @/ Z  i6 C
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]
2 h7 x' L& _; Ncredibility-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
% L% J& F) o( {neighbor-total
, S$ z, Y$ J8 l! v$ Y;;
记录该turtle的邻居节点的数目
# M  b5 x( C5 b0 S' l2 c# Z/ _1 Ctrade-time# `* ^8 v# a: Y/ h$ N: N
;;
当前发生交易的turtle的交易时间' S: p  l) r7 c0 B
appraise-give
4 ]+ `/ Q* ~  y;;
当前发生交易时给出的评价
& ]8 N: q# V  w9 S, Yappraise-receive# x  ?2 Z4 g: R4 O' w* s! x& u; o% G
;;
当前发生交易时收到的评价5 Y% D& R/ z+ W* x* t' b4 G- h
appraise-time/ j" x- Z: C% T6 ?; j
;;
当前发生交易时的评价时间
3 ?* B$ L# D9 I& B* u% vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, R- M, r' H) D, _+ {7 @! ^, p, j' ]
trade-times-total# L' }! v* J( O) J" S
;;
与当前turtle的交易总次数! R- v8 c! L0 @1 r) R  h4 g1 n5 F
trade-money-total. L8 W( W9 `0 P- }8 J
;;
与当前turtle的交易总金额) R0 V; l) I+ H% r% Z$ Z- u
local-reputation
* D/ S  r$ B& I9 {  rglobal-reputation" T: n( u+ u0 S, @. V. h& |
credibility
$ X0 t# b- h% u! h;;
评价可信度,每次交易后都需要更新7 i6 ~( _2 Q- v1 l0 r$ \/ w! A
credibility-all0 Y( {% k+ y6 v. E0 T
;;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
: W# f+ Y& J4 b
+ R" C' {' o& D;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
: {! A2 N6 X  Y* L# `7 ^! pcredibility-one' c' F; ]! O8 O  j& {
;;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
0 p6 H: V! O8 Zglobal-proportion  f5 d4 l5 X8 K7 ~) w+ n( |/ V' u
customer
# K# V+ l  \( K' _( q2 K8 D3 U1 Tcustomer-no
: n; V! J. s' ^) b. B2 Atrust-ok
; y# u9 G  C* }( Ctrade-record-one-len;;trade-record-one的长度: |" i# [. ~8 ?( X
]1 Z# X: @3 d- s# P% p
1 X9 \3 t2 V" b* c, g
;;setup procedure  w) J: l7 K" J! ]

' m7 X) W9 a% W. X+ r. `, K. ?to setup) H+ ~3 @& \3 K* d) B- P

9 D& ]# y5 w6 q! D% M  k* Fca

$ ~2 s3 j9 x1 {1 |) e
( X7 @0 M% O7 Y& K8 yinitialize-settings

) Z) q" \) r5 G2 y$ G+ H- J6 P! {5 Q/ Q$ @1 J
crt people [setup-turtles]

2 y* _- ]/ Q% y; j# f
- d# a0 j4 ~7 i) sreset-timer
; E% R2 t& I9 q( O
2 p0 p& W6 [8 A; ?% a! A
poll-class
. Q. V% j' p; T+ f4 i) _. w) S

7 v7 l6 ~% z" m4 M, wsetup-plots

5 s/ X' w' W. Q  w" v+ R/ t9 P# J( }- l1 H* ^4 j
do-plots

& h/ M" N5 ]2 Mend
) |  j9 ?8 U5 ~, o/ G! R+ @; D' Y9 P/ n' f: P1 G% C9 m8 M9 j) t
to initialize-settings
* e4 P4 q4 l, b& d! \
* p! l0 R) h( e4 @: t! i/ c. I0 bset global-reputation-list []
0 r. y, L4 Y( S4 |; b& s) G; v

# ?9 h7 ?; s* L: j" m& ?set credibility-list n-values people [0.5]
8 U7 y- e, P* s" z/ N. w
( s& a( u/ `- s+ |! j  S+ I8 j+ i
set honest-service 0

- o& I! X& ~; d7 M4 e
8 e6 j: `5 {6 K* c/ Vset unhonest-service 0

* {, l' r) d% Y4 K
- r  }( a. B8 ^6 N. v9 n. M* aset oscillation 0
, }, S; D' M- h; K

5 W, G( K' t# l1 D% D8 m4 {set rand-dynamic 0

) D1 K$ r& |! M; f6 [end/ `+ h" _/ A+ X; P: V0 P" w8 f1 U

) @: }/ p8 C7 n2 h2 `to setup-turtles 9 {! ~4 _, p& Y* f5 `, G2 B
set shape "person"* {: _$ z2 n% @$ \
setxy random-xcor random-ycor
; l/ I" S3 Z; F, Lset trade-record-one []
, Q# r, T# F8 ]6 Z  s' c' M" a

0 Y8 ?) v- @7 ?set trade-record-all n-values people [(list (? + 1) 0 0)]
" o" Q4 h! {) r# T( u
' `* J- q2 |/ y" X
set trade-record-current []4 m5 ^; a4 h# w  v7 b: I8 R/ \
set credibility-receive []
5 G, o  s+ w) Y' D! m; y5 wset local-reputation 0.5: }6 y! Z7 [8 O2 O8 B9 f
set neighbor-total 0
0 [$ g  v, l0 c5 g& J, Fset trade-times-total 08 K: C" L, U2 T# E
set trade-money-total 0
& {/ e" f, f7 X( f" R  ]- D3 Kset customer nobody
* E* T# t) @1 T( h; N8 }: w. |set credibility-all n-values people [creat-credibility]& T0 J5 b: T' f1 V+ j2 }  U# u
set credibility n-values people [-1]$ E$ H! Y' x8 B
get-color1 u' Y3 R/ ^# A0 K# V& D9 e

' a1 B# @. }4 Vend, u. R2 j! R& y
3 ]; m, ?( _- r5 W) Z& x
to-report creat-credibility8 X4 d- }! j! g' Y7 u8 D) k
report n-values people [0.5]
9 v# l( u( t8 S1 {* Eend
0 }1 n+ g# F# U# {8 z6 P0 y' h& c9 o/ S7 S3 s. R2 l1 K
to setup-plots
7 T" M& S' E9 n7 U0 @* ]6 _
2 c& |* c( l1 r$ z1 Gset xmax 30

' ~$ d  L6 `/ q: c" N+ V9 ?3 ~" U$ v5 m' D- i$ H
set ymax 1.0

; z6 m1 Q0 o; Q, n4 I' s1 T$ l: G( h' j! O' g, R5 Q8 O% u1 k
clear-all-plots

2 M- p1 x/ A+ w* z
8 e# J" s  b" _) u2 f1 lsetup-plot1
3 H& N5 I4 N6 n+ @" E
) D, P# d2 b0 J
setup-plot2
1 ^( i) S7 p( {+ d* d

' Z: `4 e4 N6 ?1 A2 [7 _setup-plot3

6 ?0 p/ s, w& v  Q2 G* oend
" i$ @4 x* Y+ D0 c4 h5 r( Z" M, G1 R
;;run time procedures
# I' _4 u' @* ?/ v( t) B' m/ |3 X* _
1 P0 r, i! t: }, B* ]  ^7 Nto go
3 X) j2 e  ?* P2 g& w! W' l6 f) T
ask turtles [do-business]

3 x; o0 p1 G+ O) ]  [end# x$ E; |$ o2 A4 j
$ w3 m1 i6 p  Z% z6 {
to do-business & g; h, ^) J' Y: {$ o4 V4 Q

1 C% }9 v2 B: {# I7 N+ B, v3 F4 [' v1 C7 Y2 z; P
rt random 360

1 |# Q. o! i6 l' r1 r5 X
9 B% Z7 M9 I: y! j; T& V( _fd 1
, I1 d% h) b: {' O$ V  }* x
& {2 ]9 Z) Q* x8 p$ r' G
ifelse(other turtles-here != nobody)[
/ N  ]$ e6 j; |- B  R2 V
4 m6 }) h* ~& T( k
set customer one-of other turtles-here

: M3 f2 u" K! D: s) ], Y: ~9 ^* ~3 @4 O5 L
;; set [customer] of customer myself
  g4 O, F: {0 Q. T

9 J" B* o# E9 n) V, ^set [trade-record-one] of self item (([who] of customer) - 1)
, \: j: Z( }- l# g[trade-record-all]of self
8 A: S# }  M- }2 C* ]0 D( Q7 p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% Y$ ?8 Y* T( d( t6 s0 b
" F1 h3 M9 j+ O) g$ m. Gset [trade-record-one] of customer item (([who] of self) - 1)% Z: Q- o2 F1 ~# T( \! O
[trade-record-all]of customer
& l' q( U( V$ S0 J2 R- R6 A
5 h0 E9 i. _4 u+ q3 H/ G, [
set [trade-record-one-len] of self length [trade-record-one] of self

. k5 P( }$ m  M- e* O5 y" Y5 ^# c  }6 X- M
set trade-record-current( list (timer) (random money-upper-limit))

" ~* k; p5 _9 U0 t: D; I1 z4 l
: e5 \$ X% D  K7 Z# t& t. v8 Task self [do-trust]
3 n8 f- Y2 ^$ e1 j  L' W3 ^;;
先求ij的信任度
- B  k& }$ [$ d( U" U' v  l4 c1 ~7 s; W% w% Q* j7 a) @
if ([trust-ok] of self)( a  W2 P! G$ E! V" H/ u6 y; d
;;
根据ij的信任度来决定是否与j进行交易[
7 E) ]  [: C2 R$ O+ F! x) z* Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ x$ a  p; x) E- v* M3 V- \# \6 S  p# v/ A2 M9 `/ B3 p
[
) f: G6 ~8 J0 f) U# {1 Y
' k" d0 c7 P. s9 d) v  ^
do-trade

" J9 @- B) B+ ?
' e% f, V+ }' E9 Rupdate-credibility-ijl

* l4 f8 a7 g' w3 E/ x8 R% Z- ?
update-credibility-list1 E  g" i* y4 k2 r( {& [$ g, i" X

$ M6 K4 g0 V2 i' R& x" l
# v9 F5 K) U  O) p3 x0 y1 G9 wupdate-global-reputation-list

0 N% b0 O: j% y4 K4 y2 v9 H+ y
4 F( k7 x4 z& i3 e! ]" u. `( {& Lpoll-class

2 H. ]8 X: P# _3 w, \% X9 v1 |9 H0 v& b7 g8 V/ j  j
get-color

( s: |& J& M6 N7 t7 E  K& {7 ^1 f4 Y7 ^  e$ p* a3 T
]]
; Z- d( h; {; w- G. m# H# D3 x2 A. M! P+ b0 D( s0 f0 i, u: `+ y
;;
如果所得的信任度满足条件,则进行交易
' ^! L3 J$ t5 P$ H! u8 V# y: L& q. P: q9 a
[
2 i" r5 D2 [5 e/ \. {, {& O
9 t7 u4 I9 c' z! z# _" X* L& k, R
rt random 360
7 m' B) `' L. y8 L. k
+ C0 c; w- d& W0 ~# ^5 g2 S
fd 1
" z& C0 F* u3 u' ?( Z1 t% n

5 r& n( R  [5 J8 t+ []

- W4 n( p! M9 K: P6 g
2 Y  q- X0 K6 C- f5 L8 B; jend
  o4 u. Y) f+ }1 |  w2 M* k

* m# @, c( q8 a- @( P3 @to do-trust
5 r* j$ m2 g2 W  I7 P/ }set trust-ok False) y7 H2 |  l) ~, ?( L! {

3 T7 l, D  s6 a1 C& V4 R! d
+ J0 a$ J3 c5 x$ e
let max-trade-times 0
5 z* g% v8 ~! O( H" kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: u1 T/ c. w# w7 w* c; p# c
let max-trade-money 0
6 f6 ]3 b2 |% I+ ]! U# X2 a+ Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ T3 |# X' W5 i& ?2 |$ Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); E& [! v7 _9 e1 z& h& S

% _$ @% j# ?! c8 C+ D( N% R
; Q  D" R/ c4 O; S% m
get-global-proportion
! E* |/ F2 P# ~$ z# ]( alet trust-value: ~, B  h; Q2 K
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)
( V( A' C3 J8 Y7 M
if(trust-value > trade-trust-value)$ {7 |. f+ R! x$ s
[set trust-ok true]
' U7 `" }" p  Fend
* c" `% ]: g$ E' l) }5 d. }. u# Q5 }2 r6 q8 O; X
to get-global-proportion
% a& Q. K1 h3 W( R7 P5 z/ i: kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  J; ~( S: K5 A( i9 ][set global-proportion 0]. ?1 o0 D* x& C8 _1 F9 o( E9 W
[let i 0
# A! i, L! \4 Y! z& P5 A9 ?% ylet sum-money 02 t  i! A8 L; f8 b: b3 Q
while[ i < people]
" Q) u0 I$ @0 Y' v[- y8 @$ d3 w* w9 L% ]* p
if( length (item i& m& q7 |" P) H% W2 S) \) W
[trade-record-all] of customer) > 3 )

+ X% G+ p4 R, X' P$ _! I" V1 [[4 J: P# O7 V% ?; ]+ I2 S1 J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ \! L/ K9 }. n# c0 r' }]! @; ^5 U7 N) w; N2 l6 |7 K0 E
]+ {7 g! ?! ?& @' T8 p# ~. w
let j 0. I4 P7 A$ G+ b2 ~% v5 n6 i% q2 b
let note 0
4 Q. l& l; s# ?' a0 y4 X4 a# u; Iwhile[ j < people]* V3 [& `- Q5 G1 Q5 O. L3 z/ \) K
[, {$ N7 ^5 y( _; |' P" l" r
if( length (item i) K/ F9 _3 @( V5 b
[trade-record-all] of customer) > 3 )

6 h* Z) w# y) U[
5 w/ z4 \' U6 U' oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 n  I( R4 B( x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 f0 D7 w0 r8 w; v% W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( P+ a1 T( z4 K
]
6 }  h. c4 O2 [: }# X]
9 g) K0 _; n) t$ h8 W9 ?set global-proportion note1 [0 V3 L: _$ i! W$ b8 t  o( R5 T7 Z" r
]' H1 }% e, F- \1 K: y. s5 o
end" T5 u0 D+ j/ R$ ?- c" z5 [  j

' a5 O+ x3 ]; O7 d- kto do-trade6 w7 H: I7 m. k2 m
;;
这个过程实际上是给双方作出评价的过程
& t' R8 j5 D, e) h2 n. {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 R  O$ b" z& N- c5 q! dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% s% x* U' m. C& t$ K2 Y% mset trade-record-current lput(timer) trade-record-current
1 O7 u8 ^2 m' E5 j. b, w;;
评价时间
. z- M( C7 L" l+ _ask myself [0 g$ c" O: X  H3 A+ ^
update-local-reputation
' t* H5 N0 ?! D- C4 N$ ~set trade-record-current lput([local-reputation] of myself) trade-record-current0 ]! W! s- `; J
]
4 N4 g2 I$ K% q" i! Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" b/ w& Y) a! y( v;;
将此次交易的记录加入到trade-record-one" a. u. W) [- ^, U! Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 ]5 o/ O4 {) K( B0 ~6 t$ {. L0 I: N9 c
let note (item 2 trade-record-current )
( n, w8 V3 l( y1 V4 b( p% Gset trade-record-current4 i- @: y/ R% g7 R( M; n; o: Z  U
(replace-item 2 trade-record-current (item 3 trade-record-current))

* T) n  _. u6 @+ L8 Iset trade-record-current8 S7 E0 b6 U, b* L
(replace-item 3 trade-record-current note)) R* _( T2 G# r1 d- h' e& [, H; d
* y) S0 ^3 M2 O5 c- j' C: z; d
: P! T7 Y! o: k/ s
ask customer [
* M9 l6 F+ g  v5 S# v% m' Tupdate-local-reputation
( @1 U1 E7 K* \3 U. B2 G$ c8 Lset trade-record-current4 f; A' m7 K9 _! D' \  B! |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! S* a" ^2 h5 Z& ?
]# s) A; `4 F' l

. s+ @. N4 v6 K- r. O* B

$ h( [  h6 A( n" x+ V' Z0 i, Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 I! Q- B! f; O/ B! F5 q

" l" B/ [( q% E7 O2 `  xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" e% m+ z/ b  V& g4 D$ t6 n
;;
将此次交易的记录加入到customertrade-record-all
" Q3 i* F! R2 W. _$ }. Tend
3 G* G6 N, D( G2 ]; t4 l7 j# o. `6 E2 D$ l
to update-local-reputation
' [0 {* w7 c4 f% N: g6 ]set [trade-record-one-len] of myself length [trade-record-one] of myself- g2 y, a  J* o/ S8 O0 \, j4 j) p

" B2 h  d, C# E3 g: @6 v/ b' i0 p6 @
;;if [trade-record-one-len] of myself > 3

- x& W& e) ]$ \+ Q9 g5 E, Y% H$ nupdate-neighbor-total  \/ r& ?9 f* b5 C- q8 S9 o
;;
更新邻居节点的数目,在此进行
& J& [, K1 X; f5 `9 o9 t6 h% b% jlet i 3
0 o+ Z1 F4 S. z& R! p6 d2 b( Glet sum-time 0
3 r( O$ D# q0 w  ]6 Lwhile[i < [trade-record-one-len] of myself], ?; s4 }1 ?, |" }. Y; [9 \
[# Y! [- z  a3 G/ n; z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); R$ f' Y5 X9 `8 S4 [
set i/ B$ V# v+ |- g4 o; z/ n
( i + 1)
3 q9 d/ p, E, E. K
]
8 B0 s' v! X; S8 \let j 3
% P4 l' |' T7 s4 Plet sum-money 04 p( Z% H! \+ s$ e; \: M
while[j < [trade-record-one-len] of myself]
: ]# n& i, t+ A- `. x: _( n[+ u2 @$ ]) I' M4 N5 b  h7 `  `3 E) l
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)
; {6 u$ `- X! S" Lset j
0 G9 q7 U7 L0 S! j( j + 1)
; X. V9 J! P, e9 a  [
]3 X; ^1 ?( Z) b! K5 \" y% I
let k 3$ {* c7 T& h$ {; \
let power 0+ R* D( `  a1 {
let local 00 z- ?" L1 Y- E3 v; U3 R
while [k <[trade-record-one-len] of myself]
- o" U, G- v* X! ~% t[5 f9 Q/ L, o& _. j  |. A# ~* G
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) # y. L3 G$ v' E0 }$ a! D% C
set k (k + 1)' y' W. |" \! r( ~
]
2 u4 p" I( G5 A! Z9 M6 Zset [local-reputation] of myself (local)/ \' r! ?. }& S$ l
end
% ^  N. G, h; Z! D5 A9 z$ T
) r; Y: D$ C4 C% m& f* g4 ^$ ito update-neighbor-total
; k' G. R# n" ^0 v$ V& X
2 d: {9 V  \# Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 o7 X, ^8 w9 g' s( s1 o# ]$ Z6 y0 F! Y( e
7 q. Q( g: G/ b4 M6 E2 `& z5 c

- B1 L0 d2 c$ jend9 h0 ?8 {) N5 i9 v+ O

* U( ^* Q: |5 w( T4 r8 l* H- G  Eto update-credibility-ijl ' h# l1 Q1 w; h- f$ E& T) M: W
4 Y9 p' `  _. e3 `1 G# I  g5 e
;;
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。) M% O7 M- `! T9 @7 j3 o. L8 G
let l 0, X  z7 M! B6 {3 E  [( t
while[ l < people ]1 N& W6 o1 S2 A
;;
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
0 {( V" V  B( e' h" q[
) s; G6 J! ]& S$ T! N5 |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( p( h% ?- t2 y, p& z3 ^# Tif (trade-record-one-j-l-len > 3)8 k( h' L+ a% ~5 ]1 b
[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( I( j% @1 G0 V! ?5 ^3 {: ^
let i 38 L4 D9 H. }+ o+ N1 A) R. I7 m% C
let sum-time 0
' ^3 h6 x0 h+ r8 A) hwhile[i < trade-record-one-len]
1 ^- u. W  k% P) A) ][
/ A, a1 s3 @! V& p- T$ [1 dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 E/ ]' I" F! g) j! R' Eset i
7 r: C! Y7 a" M0 w( t& a( i + 1)
" h9 e. o) a& D. L0 D
]
2 J6 w  Q6 R* \: Xlet credibility-i-j-l 02 l  K- T" q8 f) i2 Z4 ~
;;i
评价(jjl的评价)+ A( S% Q6 P4 B; k
let j 3/ `- Y! L8 }, q( _+ Q  E& ^
let k 4
( {. k7 Y# x7 _) @$ Ewhile[j < trade-record-one-len]
, j  H: R: T" M. U3 F7 u[
# `+ a3 c0 E# P; ^* k9 C' Xwhile [((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; {. C2 `, \9 r. b" J  ?1 O
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)+ Y" E, h4 j- M
set j& I9 W7 S! N% {# B* ]* P
( j + 1)

/ u8 Y2 g; V* B. Q]
4 K  s, X. y% L& q0 W- 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 ))
3 P+ ^! d* t% X" C$ I! A. |8 O! f- u' s) }3 z
7 t0 W# L- E( i; j! B; Z& s" q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 ~8 T& X8 z5 N% [* ~$ t;;
及时更新il的评价质量的评价# B# q& f% U, h0 ]2 X
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: o5 C+ w2 [4 X  {set l (l + 1)5 F! o& L" X% C! h5 E- U
]0 y( T6 i0 g# }, z3 b
end" o# {9 _7 V) l" ^4 q% X5 t

. ?! Z2 k9 ~$ ~/ bto update-credibility-list6 C  Z3 C- [/ B1 F
let i 0: x5 X5 w! L2 [; j# D
while[i < people]8 y' R' }3 a6 e; Y
[
7 M) x- i/ Q2 ^7 {) e- Wlet j 09 p8 G* ]6 L, m/ A' v% A& \
let note 0
3 z: e; n9 `* z7 f( F% J3 jlet k 04 }. _( X  e4 K4 \$ ?( @
;;
计作出过评价的邻居节点的数目8 [3 ^* |  U! t' V) {- v# {  O5 t- g
while[j < people]# h8 `. S  t, o3 @
[
8 V$ [5 L3 f5 Sif (item j( [credibility] of turtle (i + 1)) != -1)
$ \* P. q& }# Q/ t2 Z;;
判断是否给本turtle的评价质量做出过评价的节点
  i  b: O$ G/ j. L" i[set note (note + item j ([credibility]of turtle (i + 1)))/ D$ B9 q& N& y: ?: Z
;;*(exp (-(people - 2)))/(people - 2))]

0 g3 c0 x( Z6 r6 P& [" c1 `set k (k + 1)3 N2 d: L9 y/ y
]
  x; M: A- g- Rset j (j + 1); J1 E$ B7 V; d- C" ]
]/ E6 Y5 E) H/ k  j4 k2 q
set note (note *(exp (- (1 / k)))/ k)& c2 z% C) ~* s9 `7 b1 `+ k* w
set credibility-list (replace-item i credibility-list note)7 {* L( v. r* R- q' U3 [5 {
set i (i + 1)
3 B$ k& \7 |6 X3 ~$ v3 {5 }% i" C]
# R+ s7 ]2 I, ^3 K3 Y! Dend
+ p" ?# ]: f8 J. A2 G  O" I# y' t3 o2 s/ I# E9 Z
to update-global-reputation-list
% k3 C1 e: D4 A7 r- hlet j 06 E  F1 n4 Y- f! ]& U
while[j < people]* x( P" e+ S6 |2 |! g9 R4 Q
[
* A2 B$ t$ @$ u8 h4 u5 qlet new 03 Y3 _3 D& U% P% L: H# V
;;
暂存新的一个全局声誉
. D) D+ ?' l2 ]; T) Zlet i 0
/ B6 w! `3 f7 X* G) V2 Klet sum-money 0
( O4 G; @8 o. k& wlet credibility-money 01 k! e3 P+ m( n0 {1 N. c
while [i < people]7 ^& p8 n% M7 ~+ G0 w7 Q6 l$ y
[
6 G+ Y/ |, \; X. f0 M2 wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 r* w/ d# ], B" I9 t3 X1 C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ Y* b5 l6 u. x4 E9 s6 T
set i (i + 1)* F; }9 a8 O$ p( s: w
]
% R' A( G5 p: Zlet k 0
7 `7 c9 x& d$ \, X+ w8 P8 @let new1 09 [6 S1 a5 A- Y9 z0 ?: I
while [k < people]
2 X& a+ c1 x. P' S/ J+ `- \# w2 ~' i# y[$ V% S5 C* H; s2 |
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)
# z6 J* D$ p: X) h* Q; K! G/ Xset k (k + 1)4 s- D; W" A. {1 q7 C1 y; I$ [5 M
]$ c# I5 {$ O: ?' Z% I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # t1 l/ G7 R, W# p7 g$ ?. b
set global-reputation-list (replace-item j global-reputation-list new)
- s& K2 x9 v( I+ Zset j (j + 1)
4 h6 |9 l. d, C& s) F]6 d. m1 D/ v' j+ u2 F0 Y
end
+ Y# Q0 Y, O* t  ]4 [8 Q0 a3 v) B! z  F9 }, x6 d# G6 J
( p# H% I. }/ c3 M8 T: Z
8 X6 X9 T. Q1 v& J4 u
to get-color
7 v# n! d! {& C& e1 V  |2 N
! x  Q) D2 A/ L8 lset color blue

  Q2 J8 b- O+ |& @0 Q1 f- P* `  D% }end
* X+ K9 L' F( F! y$ y* n
3 f. D1 ?$ [# l! d- M- ?to poll-class& Z: V! c6 Z7 M* n# a4 ?
end
  R* M/ T/ w, W! U/ ~8 z
( M  E* ?3 r) t) I8 s8 xto setup-plot1: s2 i% n: p% G  f/ t8 b  P
" x1 S. V9 }+ U' Q" I& [3 V' S; e
set-current-plot "Trends-of-Local-reputation"

; r6 `. \% X) s8 E+ ?- n$ H& G4 h0 V" V5 \* i/ D( F3 |
set-plot-x-range 0 xmax

' v. D. Q6 ~. W! S! d" ~5 f. e& Z# y. d
set-plot-y-range 0.0 ymax
1 \+ L* U! f' \- y5 y
end
" Q0 o2 Z$ r4 u7 y3 B: |
1 W2 |# q( V" s2 y+ ?to setup-plot20 _5 V$ q' N! L# E
, n# Z: ?* ]& h2 i' m; x( q
set-current-plot "Trends-of-global-reputation"
, w$ I4 o& p- V, ]) V
/ p- [6 h- q4 Y  Y% X
set-plot-x-range 0 xmax
& |$ I$ Z  t  E; ]- F0 p- N

6 B. X% d5 ~7 f8 q3 t5 X% K, nset-plot-y-range 0.0 ymax

, y9 ]1 Z  a% Z* b) Y5 g$ yend8 k- P" \, x) J2 q7 N9 A* a2 x

% l2 A* B1 Z- C( m! o! Cto setup-plot32 u5 j; Q% a# ^$ G1 N
5 S. T( q5 p" v& f) }7 v$ [
set-current-plot "Trends-of-credibility"
0 H8 e9 [7 L  U

( f+ U9 O7 a0 _, u  R+ [4 y; f$ c5 Z+ Dset-plot-x-range 0 xmax
1 h1 U% y: b# V; _! I' Y

; g4 B! h4 o' ~  g0 p1 xset-plot-y-range 0.0 ymax

+ F4 |' h6 k; c' _$ x6 I0 `% O! ]end
/ ]: c4 E0 A; z3 G, z# z! u/ A( B9 ^9 n' V
to do-plots
" L  X) ]' ]$ |5 |set-current-plot "Trends-of-Local-reputation"
4 m' q( H: g6 {/ p8 z5 Mset-current-plot-pen "Honest service"1 s9 E, z5 s$ N, k8 X' G' ]5 |
end
/ @+ n5 j1 x8 A, h2 T% q
; H! l0 p: t# ~1 @- ?[ 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.  M( d; W, I6 f

8 f6 t  q6 s9 d/ m3 z& [1 H+ c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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