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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:; A* {, u. r2 z
to do-business
; M/ }2 W" Q# V9 m2 n& w rt random 3606 K- M; r5 v+ D' L0 S6 u2 ~
fd 1
0 d9 Y2 @/ d) P! r, R ifelse(other turtles-here != nobody)[& D# V/ W& t" Z! B( z) `# X# 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.8 V8 w( }# l% @1 k! ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & A2 Y' H) r# G1 z2 J* Q% J
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 Z! Y6 C9 ?( M6 `4 K
   set [trade-record-one-len] of self length [trade-record-one] of self
- ?# f+ P5 `* @, L; Y2 g1 ?7 X   set trade-record-current( list (timer) (random money-upper-limit))
" t3 c  }* Y$ r% n5 S% i
- Y6 _  w4 M2 L9 O. e: X问题的提示如下:% `! H% v- g( h3 u$ a
( B6 y5 z1 [& G
error while turtle 50 running OF in procedure DO-BUSINESS. ^/ V' T8 |2 \* @) |6 m( E
  called by procedure GO4 T8 ~3 z1 G$ Z5 W/ C3 a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* l- }. ?+ E9 ^) @
(halted running of go)
$ ]8 c) E& P' G. r% j- J3 p$ j( I, B- r- o
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~~; r! S2 }3 _. @' J# f' h4 b
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7 V9 k+ V1 z( w% J  n1 Y
globals[" y7 e2 N5 M- v  d  J
xmax$ f0 E. t' A# b
ymax  ?# x- B1 y7 u3 _8 n( g' Q
global-reputation-list3 s5 e' d8 ^# [9 ~4 F0 W$ F6 A
8 c% |' ]$ ~# X8 C6 ]
;;
每一个turtle的全局声誉都存在此LIST$ t' `8 W$ t- f0 B, B0 K
credibility-list
7 M9 f" q7 c% K! L; h;;
每一个turtle的评价可信度& p8 B+ k5 ^) S, a  F* E4 g: {
honest-service' ~- P- E0 A* t" m$ ?4 A8 G
unhonest-service
1 |. o6 _- T9 X+ p! J# H6 Joscillation
# u) |- i9 F: s1 m; Jrand-dynamic( H3 _4 c2 e; d3 Y  J# B
]
+ Y' ^, h, T% R' }: ~) O( K7 ]# C; b4 h( g% W' Q3 a# h! \
turtles-own[+ O9 L9 Y4 _$ j" ^- K8 W5 W" W! u
trade-record-all1 W- V3 e, h) [9 u  m' `( W2 A
;;a list of lists,
trade-record-one组成
2 c9 g' I$ F3 [' ?& Otrade-record-one/ D6 c: g9 k; f/ Q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, y, @8 ?# h" Q9 \6 U
& I' ^' y, J& d$ T;;[
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]]
2 t1 B4 |# \( v2 i9 Htrade-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]
/ g0 G* F+ {; G" xcredibility-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
2 k" _$ r0 y6 E7 [) G( j1 hneighbor-total
* F. P' c% g+ F9 k/ d) e;;
记录该turtle的邻居节点的数目( k; k. O# R3 \$ k# z
trade-time
# U) M+ P6 v) @( K( X+ P;;
当前发生交易的turtle的交易时间
/ Y2 h+ H2 ?% b' X' T, {appraise-give
# H/ G" M1 c/ K( f;;
当前发生交易时给出的评价
- M: R' e: T7 o* H8 ?5 e/ Zappraise-receive; T( J; P0 a( E! }9 N& y; l
;;
当前发生交易时收到的评价
' n" @6 b  |8 s) R5 s  s9 i$ b( Yappraise-time
* D3 K" J8 Q  J+ K3 i, `;;
当前发生交易时的评价时间
2 v- x1 o1 I. Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉) q2 d# {$ @8 c! h" Y: U& P0 R
trade-times-total/ u+ }) g" W7 f, V9 a5 M, U
;;
与当前turtle的交易总次数
. \! |0 E; E5 H; Ptrade-money-total( r. f6 E! `& T$ i7 ]" O# v% o# W
;;
与当前turtle的交易总金额
6 e/ r1 b  c. Y1 Plocal-reputation) V! c8 j$ p! {0 u5 f8 _+ \- k
global-reputation
8 O6 R! |$ V. O; jcredibility  F, I3 m' P# y- ~
;;
评价可信度,每次交易后都需要更新7 o. u1 @/ f; s  E6 T9 A/ _: V  Y8 P
credibility-all
% `, H0 ]+ ?* y$ @" R2 \9 @;;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: \6 C6 D2 o  e' p

8 Y0 G% G0 B# I% D2 O8 `;;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; Q' L; [/ O: d  m3 }* u3 a
credibility-one5 E. `! [! W0 G, m9 e1 _2 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- w7 `* _7 w0 C4 Y6 m( N/ \5 K
global-proportion
6 J) O3 h0 L6 o4 m! q; S* A2 Ycustomer1 l: `, w. f( u) D7 O* v; h. P) F- \
customer-no
& F2 a% K( j3 y4 w5 {$ n0 @2 m: atrust-ok
1 |  k5 H* o5 S( b! `trade-record-one-len;;trade-record-one的长度4 U6 m. X1 a1 J9 x5 b' `4 U
]
' G& b+ K9 q( b+ ?2 [+ e4 }& g0 [4 Z  ^5 S, l
;;setup procedure
' H+ M1 m, W1 b, T! X5 ~8 u! Q# {5 O* f7 p6 ]
to setup
" N! e0 F& |' u  n- M1 I" Y- p% d0 z5 C# K6 i7 A1 [
ca
$ y9 Y6 S1 W# a9 |

  h& d3 F; N' hinitialize-settings
6 X) \- y+ \. j) W8 b) l( N7 b; C

, Y7 Z# x( H/ @+ D1 ucrt people [setup-turtles]
1 m( O- R& z: M0 S4 y* ]% n; y

. B$ X0 P$ v& t4 x5 greset-timer

( f* o: N% J$ z# [% ]
  r2 y3 @) D4 I* J. Apoll-class
  d  J2 d. D3 M# V% W
' w* l0 W% r! L  L5 g! a
setup-plots

3 e  t8 [" S% ~
! g; a; y& S" l( gdo-plots

6 {8 w) R: X  w4 ]3 ]& yend! {  d' R7 n. c; w7 Y

7 ^7 }+ ^1 Y# K0 T* @  r- Q4 Sto initialize-settings
+ L9 I! P! `/ p$ h3 o
$ S; U$ V6 Q) X8 @; Y5 T& gset global-reputation-list []
6 S- S7 F* t0 g
" z* ~( O% k, Y( V2 U% _" i
set credibility-list n-values people [0.5]
' e/ U& x' ~( S# H5 {
% S2 N4 ^4 \5 e3 s% A  t) w1 j
set honest-service 0

1 n  Z) V2 l; C& }; a& p
- P8 Z9 b2 }1 C6 {set unhonest-service 0
, o; U2 |/ r% t6 j5 h

% z" Z/ |. B  `& `' @set oscillation 0
2 a8 m' o/ |! k$ b- o  z, }

( z3 Y- e( e/ w- v4 n9 U: Iset rand-dynamic 0
  }: ]) n4 D( Z+ o
end2 B2 O  v0 y, l! Z: H  C2 X; ~

' w; ]- p; U4 K% ]to setup-turtles
0 J$ ~) w' ]4 v6 E  ~set shape "person"
* G9 h' k) h+ A$ d% lsetxy random-xcor random-ycor
8 h$ ^; c- S+ \7 i; c/ eset trade-record-one []; ^: C! Y: ~1 `" E

  N& H% O6 C2 x0 _0 `+ Z, Hset trade-record-all n-values people [(list (? + 1) 0 0)] ! F+ l- S9 y" J0 D9 k( a

6 r; c0 [9 v2 R; P% ]2 |set trade-record-current []
/ m% G1 s; Q, @5 fset credibility-receive []
  n5 y$ E' e* ~, ^# tset local-reputation 0.5, Q: {1 L9 o* j
set neighbor-total 0& h; `# G/ @5 M
set trade-times-total 03 ^# H: }+ q- u# ]4 J
set trade-money-total 02 N$ ?  j7 E& G, q$ v/ _9 E
set customer nobody  n  |, \% M$ a4 q7 |- o
set credibility-all n-values people [creat-credibility]5 e; Z9 Y; z+ P3 C* C. r! _, `
set credibility n-values people [-1]+ ]+ [7 @. ~; X3 h  [% P8 A1 c
get-color
" S" |- R- }# F; b1 K7 u) _& H
- Z! ^! A; `) c- T9 K1 p
end# P" B" B) [4 i3 J% q8 ?! h

9 u5 v) ~7 R5 a# ?- Mto-report creat-credibility
8 ^+ @" q0 x5 I: W! n) |$ H& jreport n-values people [0.5]
+ ?7 J1 w7 j" I8 Fend
: V' {8 W  B$ J, Z+ {
; A7 Z: z' D$ dto setup-plots
* C9 I- n1 L% F% w' D& ~
+ t1 P  w; Y9 X* Hset xmax 30

7 E6 w% A3 c3 \3 I$ s% e. `5 _4 M; ^. g3 z% C. m. L
set ymax 1.0

3 y3 w* K7 `: s; R9 y  I- Z, @- T3 i4 Z1 ^" y0 O" L9 }( x
clear-all-plots

6 c- ?7 Y* \' E2 P1 q
: f, j8 d  h1 \1 Vsetup-plot1
6 X* Z. V% u0 E  q0 e" h
+ x3 @6 D9 ~: ?1 T
setup-plot2
  k7 w" L) u6 [
' o7 T/ f% d& B# L8 }3 B: T' y4 G
setup-plot3

" w# l2 h# P5 q+ M. z2 C* Q9 u7 Y7 Q- Xend- z& a' _. n0 H7 j

: _' e1 M3 T( D4 v7 l$ t;;run time procedures
5 n$ F* i( K- ~; F, D6 P( g( ?6 W6 {& X+ _- H9 n! Z
to go" w+ f4 X" w! p9 H! R' Q  \
& `9 B3 ^) Y: K$ G
ask turtles [do-business]

( V% U+ z2 M* eend- M5 u5 v) i) z# F  _
& I. b" i# ?' ?9 K
to do-business
9 f& \( w2 Q) x/ j

8 K7 [$ S( Q9 Q4 @* b& Q8 |2 s5 C- T& e) U, }% d. |6 ~
rt random 360
  q  P5 }+ B% u+ D4 ^) d

- @: r/ b8 W2 l3 b0 D% Gfd 1
6 h/ k2 |% ]8 o2 o, f1 b' ]

: @0 x$ \/ p5 ^' t$ ]0 @ifelse(other turtles-here != nobody)[

, b" F" D, Z& |
- _6 L  L; [" A* _7 H  h2 bset customer one-of other turtles-here
( v9 F- ^1 b8 `  X
! F4 P! W" b" q. L% l1 c/ _
;; set [customer] of customer myself

2 {! k% b' v, z$ x" v# ^; M% E1 b# B3 F" h5 i; t
set [trade-record-one] of self item (([who] of customer) - 1)8 W: e% U6 K! E% `
[trade-record-all]of self
" n8 W, t5 M5 X1 w1 Z5 d7 o8 j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ h6 @3 R# Y  e; C5 ~# `9 a7 ^/ z, |

2 M1 H, l& j  n9 Mset [trade-record-one] of customer item (([who] of self) - 1)( p* T4 v* E% V- f7 J. U
[trade-record-all]of customer
5 u* n. U1 @6 ^+ d7 |% Q4 ^  L

9 X0 o; W/ h2 Oset [trade-record-one-len] of self length [trade-record-one] of self
  }1 }) p& B5 i1 K1 p2 P! F/ t: k

+ `. X$ b& s) w" R2 Z0 t) tset trade-record-current( list (timer) (random money-upper-limit))
; Y" }  T0 ]9 \& u9 t& |
8 `0 Q4 j! `) {: W. _1 B5 u
ask self [do-trust]
  |& L, B% E0 D;;
先求ij的信任度
" Q) g! P) T7 u8 v' T- D
" h  F5 ?7 v' Gif ([trust-ok] of self)/ q8 `# O- `: L3 E1 b. D) o
;;
根据ij的信任度来决定是否与j进行交易[
9 I2 U+ Z1 b" N+ [1 s/ e& Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ o! A2 ^' V5 W  _
; b8 {$ B3 J% E# ?
[

5 G3 C- b4 ^# j% ?% x/ F% }5 ~" t$ Z9 F
do-trade
' h6 D1 G: v7 F
) e4 P. n0 _, M+ P& ^+ T- R. [
update-credibility-ijl

' ]  s* A3 a) D$ c" ]: l+ J0 i: j8 S0 z/ J5 m* R+ j
update-credibility-list
$ {5 X# V( P! X! A+ ^
- g4 [. D8 i" R  q
  a9 M' F( ]  S: a# H6 z: ~$ R/ K# a
update-global-reputation-list
; }- {( ], v6 k% e- Y
; Q8 u3 {. p& m! g7 Y6 h2 ~
poll-class

: g" f' o0 U0 b8 a8 g9 i" v. K# `! J3 R( ?0 U
get-color

  X6 i( S& E! _* p
! I  @. C& X  [& F' _  b]]
8 ]( I7 C0 D0 V; g+ S/ m
9 J0 N4 V3 J" G2 E$ s" ~% v;;
如果所得的信任度满足条件,则进行交易
) N0 I% C0 P: K0 @( J
8 {' h3 J0 M! A4 }  n[
! L8 Z& H' J- ]1 N4 p& u/ ?9 }) p) a+ G
/ }. o: I+ k' V6 h% g* Q
rt random 360

  N# K' W6 v1 z  U1 |' |7 o  f; t/ y2 Z4 w! Q) r# r
fd 1

; {  q0 \  _$ i" D! c* g, d( ~& W# T8 c
]
* T6 E# k# j! E9 Y5 k# a% q

" z+ |6 D, \1 z& A# Fend

! W, u! g# Q8 V' Y
* y1 @/ j! Y$ `& M" A1 O, N6 oto do-trust % _$ Z* r6 l+ A* s
set trust-ok False. `1 r# V  j- h' _+ I

% b5 \  C+ s, U& G0 J! \

  d# h4 ^0 s  u( w4 x' u; z, Xlet max-trade-times 0; z. N6 Q0 G. ~! h+ V2 T& T, _1 N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% y" F3 s6 V, s* |8 Ilet max-trade-money 0
0 m) w9 s7 G6 s6 {: `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. w; Z+ c, s% u* w  ?! qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# w! k/ a+ b) E1 h8 X( A' Y: Z3 |. q; D' ?
: V1 ?; }. y7 j$ l9 U
get-global-proportion9 s! L, ~$ F% e. L/ ?3 h2 k
let trust-value0 H9 L& W4 k1 s
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)
( D, z9 K% R0 F. f1 m
if(trust-value > trade-trust-value)$ Y% G7 d) e: G6 j8 A
[set trust-ok true]8 g8 n  s7 {  F/ \1 H& ?# g5 o) k
end
! a; x9 R& b) O6 Y' M% }' g/ T7 N% E* Q% n
to get-global-proportion6 `/ G- L' n6 F1 h( @+ E! |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% t& Y) x3 ]5 u' t* g* V; z[set global-proportion 0]6 w4 x' D: S  e4 s
[let i 0
& B% g* G/ x! y) g$ W+ b8 a' n- S4 clet sum-money 06 O6 z) V! k7 q$ C
while[ i < people]
0 W: n1 _, K+ _4 `[( T( p( G5 d  @" L# U
if( length (item i
, B3 d& ~5 a# I- u) S: n- f[trade-record-all] of customer) > 3 )
$ y  j: l8 u! e# ?
[
3 z7 G: r  t: Q$ R0 W& Cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% k. k) V$ x: b1 _]
( Q2 D, r% `! ~: X" e6 ?2 C]& L( I" k$ V: Y! f+ N; i: s
let j 0
. y( [+ G! _7 {" h3 ~8 M9 [let note 0/ x  U7 y* K# e; ~$ A$ U
while[ j < people]
4 _; U/ i& c3 ^2 c5 B2 w[
/ }" }3 I: X- _# Z* i; Lif( length (item i5 H4 m1 R0 M3 X, ^, @6 r0 N5 t
[trade-record-all] of customer) > 3 )
$ h0 |2 m8 q8 |* }2 `
[7 p3 J  l6 W7 J; V3 v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, n; B0 I1 U& O4 ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ ^& e3 b8 T5 r& S# D$ x1 C1 `: i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- u5 E: n! U4 o  H0 J
]
# w; s) m$ a: q' s]
, O0 L9 c/ \5 d4 \set global-proportion note
. E+ C, u8 d+ \6 d* a0 \]2 z* j2 b* T4 z( _
end& _5 R. N  p9 I5 \4 g
3 m9 |* d' C* I: Z2 H/ U* c+ p
to do-trade. H$ s/ ?; d. d$ A% t
;;
这个过程实际上是给双方作出评价的过程" g3 Z1 A) R5 T8 O% j1 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; X4 a2 u8 d/ ?$ ^* ~6 {* E5 ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 S: F6 j- W5 F
set trade-record-current lput(timer) trade-record-current# i4 X5 R' \6 o3 m( J, |
;;
评价时间
6 l6 |* {# H( |8 F/ yask myself [
" y) H  l; `6 ~: S! _update-local-reputation
: K+ x+ k6 [/ Q4 X. |set trade-record-current lput([local-reputation] of myself) trade-record-current
: D% }  D8 N8 S- E" ?/ C$ z0 a* p]
- H( r/ c: O, y5 n2 Z; s8 u9 eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* z  O- P# h" u; }, D
;;
将此次交易的记录加入到trade-record-one
$ j7 p5 Y. V, R# T+ p  nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 [3 g1 C9 r7 Flet note (item 2 trade-record-current )
+ z; P$ c" Q; J1 `0 E( [" Vset trade-record-current* V; \" G) @1 q
(replace-item 2 trade-record-current (item 3 trade-record-current))
& e" r/ R6 F' {% s* V+ m
set trade-record-current1 U8 K  `; U6 {( ?' B
(replace-item 3 trade-record-current note)
; u4 q  z3 x, p" C* k$ F; c% \( n2 j- @) P4 c  }

) J6 z. e* g; b6 ?ask customer [
) p  A' ~) G! N# N6 i; [" \update-local-reputation# @0 `1 ^; m( B6 l
set trade-record-current
1 U! V# R" R2 y% V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 n* ?7 L9 K( ?9 Y  C1 J% L  g: j
]
$ P: u0 V- {3 F8 B  S1 s& G: O) E. J& r; J
' a6 f+ k! {% b  q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. J; h/ _( j. P, O

' {* y1 p" a* X( M4 k+ jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- m& Q. @0 F; S" l# s0 B; [;;
将此次交易的记录加入到customertrade-record-all/ Y# E: p" d, B) G6 \
end
/ X1 N) n: a- _! {) ?- B
- ]" u7 {" \, k4 W- Pto update-local-reputation
/ ^# Q; f+ ^& n  m6 u# g4 Z2 sset [trade-record-one-len] of myself length [trade-record-one] of myself
+ G0 H7 F( Z' ?0 \; G! f( y/ Z7 b! j) s3 R6 A& m. a* ^

3 n1 @: T* v5 u$ a- o+ M& J;;if [trade-record-one-len] of myself > 3
- Z# H0 k* a, o- g6 |
update-neighbor-total4 d) @0 _2 U7 D7 G. E, c: ^
;;
更新邻居节点的数目,在此进行
$ `, n$ ^  c+ A/ Nlet i 3# r- k6 g  d( M5 U" s" R7 k/ K9 ^
let sum-time 0# @: M+ h! I! u& L- l
while[i < [trade-record-one-len] of myself]
6 l, f% S) P1 y3 ]: X[
5 W: K# h* M+ u. o/ [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) M5 r; f. ]% |8 S& X
set i0 X* A% U! K1 L1 \
( i + 1)

! x5 z) N5 m8 V. y/ E# P]7 A  R" ?% w3 \/ Q, q+ }; S
let j 33 |- u) h1 {+ w% Q
let sum-money 0
* Y8 o: |  L9 I3 U1 ~while[j < [trade-record-one-len] of myself]
) b) Q7 `( u* t6 N: r3 O[
. D; o; t. U( _" D& e' i( Qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* ]' H3 a0 i- i* G* s  D) |3 n" E: jset j
/ G% c* ~* M% D; z. j4 _) y( j + 1)
4 x# G. S7 w4 b$ r+ P9 @2 Q0 c
]+ S; h7 Z) O! c$ T) R4 b; H
let k 3  M* M4 x$ [3 k2 ]  d( z& y1 o5 q+ r
let power 0
0 V8 O2 K9 g; r4 Z' ^4 @. R6 \let local 0
1 L" \) t5 s" @! g- Kwhile [k <[trade-record-one-len] of myself]1 r1 e2 `* E. U3 U! S( ]
[
0 a2 V+ E/ b5 ]- L0 @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) ( W/ S- ~$ s, l, f2 k$ f
set k (k + 1)$ G% u) L" M( [2 _- P# p
]. E7 _# I6 L. U6 ?+ E4 S6 @
set [local-reputation] of myself (local)
/ z0 C! \) X9 T; c, N' {end
6 t  G9 z/ b1 }6 K) A9 ], C" |! X+ |9 W8 A6 p3 Q+ Y
to update-neighbor-total  w$ }+ w+ g% d$ b& @8 C2 {

; H% f5 ?! @+ c( Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- \* W5 }% f/ S' p7 e

0 t' k( j$ C5 Q) R
9 C: ?7 a6 R% ]" [' P& }$ }
end6 S! y, D7 J1 n. M2 `  W+ m/ c

3 m* A9 u% m; k' j7 k$ Gto update-credibility-ijl
* }$ W, D) U; Y5 T2 l5 Q) j
3 {5 o7 @  n2 r- A;;
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。
/ A3 X5 Q3 V  u, K) klet l 0: m/ l! E5 S) W8 _
while[ l < people ]
2 b& D4 d! m+ y$ X: Y;;
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
8 C% D5 c: B4 Z3 i) r4 L[- q. a- L/ I% Y% w3 N" ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)& m& [. V: p1 j1 Y9 F$ R2 f
if (trade-record-one-j-l-len > 3)4 C& ^: g4 Q  d
[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
5 B8 g6 u" N9 ~- B1 tlet i 3
- l2 c9 p4 ?4 ^) J+ [/ a  q' L' Hlet sum-time 0
8 q- X* A7 B7 W: h6 T% O3 owhile[i < trade-record-one-len]0 e3 `# k( m( h" K9 _& N
[
; B# n8 j+ j3 G% p. C: y" o. Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 H; w- t; i4 G* h
set i1 E3 ~/ h3 r; J4 o
( i + 1)

8 |3 A+ _) B9 |; e. P& w]" ?' d% I' S1 G! ^: f& d
let credibility-i-j-l 0
0 P/ f4 H% d, J) v7 q# C: _5 E+ M& X;;i
评价(jjl的评价)4 m6 r' Z, j& p5 g6 [6 H* s3 _
let j 3+ A& I0 s$ t* g! T& Y5 ]8 e0 ]
let k 4
9 \: Q2 S1 z; H& G# a4 G3 kwhile[j < trade-record-one-len]
. U+ A1 b/ K( {6 q! H5 `[
* l  f7 T  u: H. [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0 @  \6 y8 l/ {# @) o! k$ c
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)
8 t; J/ n& x& N; Sset j
) Q1 Q8 b1 u3 W/ v5 r( j + 1)
6 F& K/ k- Y0 }- P( o3 ?
]/ W( [5 s# s3 b, X
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 ))( f$ L+ j' m) G: n' m

6 k6 \5 @% h( Z7 D7 I. K& U
$ {0 I% z" }$ ^) ]9 r5 D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# A! ]6 |4 F! a5 @3 A
;;
及时更新il的评价质量的评价0 q$ }- G% [% T
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" e# P5 j% ?1 @1 D7 iset l (l + 1)6 y7 f: i7 ]$ U  U% C+ I7 l
]5 l7 M$ o7 _" V1 a$ M: i
end
! g* @) B( J) K. T2 [  k3 J1 P
7 f8 b# H9 z+ Z* D) r4 Bto update-credibility-list
7 v" v5 `+ V; D2 |let i 0  V) a! O; O' @8 `$ y7 g2 y
while[i < people]
; p7 q6 B" N7 i# u! o3 P[8 H3 [* I, g4 U6 i, ]0 R+ d( @
let j 03 `; m* J% w( v( M, S
let note 06 L: o- h! Y% N
let k 05 ~! D% @+ @* I- J% J
;;
计作出过评价的邻居节点的数目# ~; C& @% Z0 @) {
while[j < people]4 ?) h, `9 f0 O: j
[) _* x5 b/ @; u+ V
if (item j( [credibility] of turtle (i + 1)) != -1)
. {$ H9 i) F9 T4 a! F" R8 A;;
判断是否给本turtle的评价质量做出过评价的节点) k) Y' g+ |! h+ O* P2 B/ Q
[set note (note + item j ([credibility]of turtle (i + 1)))
. p3 B: K; D7 K6 h) h;;*(exp (-(people - 2)))/(people - 2))]

9 ~& C# c' h+ w+ W" Jset k (k + 1)8 v2 D5 Z! z% b/ K3 D
]6 K: B% r$ N; E" ^5 f$ W
set j (j + 1)0 O8 [4 w* z5 A5 q$ i! L
]
7 |8 B' `" M0 z2 }7 o* p, l/ bset note (note *(exp (- (1 / k)))/ k)
+ A2 O% S0 m& B2 ~2 @' Q$ vset credibility-list (replace-item i credibility-list note)
6 [; O5 }0 h# Yset i (i + 1)
+ `) G) F( d4 V  o7 A$ L]8 f; D& h4 E- l- [: ^& @
end9 r; R. }% o) _  j5 H/ T
* b' F- F2 j0 E
to update-global-reputation-list
6 d, B" w, @+ _0 ?) f9 R- Wlet j 07 Y  s7 h: a" n" k2 a
while[j < people]; ]; D1 m9 s  j) G
[
6 G4 q$ C. o- l8 W- blet new 0% O- D! X- O; W0 O* A$ J9 f, D5 Y
;;
暂存新的一个全局声誉
- H0 [( [. b! |$ K' f) M( jlet i 01 R$ {( R8 i3 a* d2 `
let sum-money 0) |8 |2 B; [- X& R3 e' V" Z2 L
let credibility-money 0
# W6 {1 f9 ]6 I+ b% A3 r( @while [i < people]/ `. s* u" R, `% K, }
[
# Z/ j8 J8 q  T, X0 ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) @  M, G6 o* b/ N
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" A3 @$ P0 e( e, {) e6 X
set i (i + 1)
. I' C* f; s. m: [6 y7 N% k]0 O- h& G; f" f- ?1 c
let k 08 [- h* l) |0 m* m. l  Q' W
let new1 08 c/ U+ W. I; P6 i8 k; J  \
while [k < people]
5 @0 t& C: e5 x: y) g[# j+ z% ~/ d& P$ b; q: g9 P! I4 w
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); I& d  E6 @$ t& j
set k (k + 1); p" \0 h0 V& Y4 O( h
]$ K9 Y$ m# Q9 |. E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . Q" n+ |+ W( s; p; x$ D4 s3 l
set global-reputation-list (replace-item j global-reputation-list new)6 Q( Q, Z6 l3 y9 ?( {
set j (j + 1)
* T+ M' O# V* d* @]
' ~( [1 G4 `2 Vend
0 s( N8 y8 k* G4 O; ~4 y5 |; Z) X% t8 z' j# a3 P! o
) T/ c# y# Z1 q$ Q4 Y
) `1 Q. \  S5 D! L
to get-color( o" d5 J& ]+ J4 O
% B# \+ v4 ~  i, P
set color blue
1 ?% ^( N* S( }( _- R$ ?
end
1 M- s! r; ^9 u5 U: S# @. M8 u/ ?1 I' K; Z
to poll-class
' |4 p" @9 h2 b: m. a9 |9 U4 wend4 [+ ^( t& q' u& M. n* }

/ Z/ N8 r' {" L5 x/ F$ f. l5 ?to setup-plot1/ K. G- U# s, o3 X9 x: p

& b+ v* |# c/ i7 u7 bset-current-plot "Trends-of-Local-reputation"

; z9 B) u7 R& z+ E  I; g' D
+ h" {2 _* c) Rset-plot-x-range 0 xmax
* D$ \# Z! @; f. h+ v3 k

/ M' O' d$ X3 B4 H; v9 m5 \set-plot-y-range 0.0 ymax

" Q$ @7 p/ e# A' F: f, i) ^/ X" h5 g& fend
5 n8 G, @' r% P- g
) U2 q9 @) u% P2 i( V# _. a+ wto setup-plot2& N. o* y+ U/ S
5 V6 ?' l) k+ _( h6 O
set-current-plot "Trends-of-global-reputation"

" L+ T6 B# l" R8 _* P/ U' [
& L* z8 w, V9 V& t6 Cset-plot-x-range 0 xmax

$ x: \% q* c5 K$ e1 p& o! k! G
: f0 X% z0 u# O; S1 l7 V$ Fset-plot-y-range 0.0 ymax

" O4 J. X: c$ s2 D1 |; jend
4 A" }9 M1 @* V  k
$ H5 x& y* S- B# R; c' n) [to setup-plot3% y9 r6 G, J8 f5 Y# N. A: F
3 v* X; m  [6 u, P* W3 W
set-current-plot "Trends-of-credibility"
8 a+ p: U  D2 E9 P) t0 a4 C
0 [  R7 [  }3 L+ K( C& ]4 H. {
set-plot-x-range 0 xmax

/ c0 S8 Z# c* v5 Z2 z
6 c3 i2 q- m. k2 ^set-plot-y-range 0.0 ymax
! _% V  y, k+ u" ~
end
6 ^% h: v5 V4 P+ H! u. H+ h( R. l
to do-plots# j/ \- |7 |( k8 x! i
set-current-plot "Trends-of-Local-reputation"( u$ x2 S5 c4 d
set-current-plot-pen "Honest service"8 M$ Q0 B2 h& x
end" ^& d) u8 ~- L6 ]3 y( R" a4 h3 ^

6 ?3 K- t, X0 j$ F[ 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.8 d5 Y; l7 A% H" v4 B# |( i0 k) [: {
% F4 [/ e' f- v- l4 m, G
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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