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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:! W* w) t( X: B0 P5 v
to do-business 8 c+ l9 A# Y7 z# q! X
rt random 360
. R6 j4 H/ u/ H, I$ u9 {% C fd 1* x, G; o7 S5 _5 I
ifelse(other turtles-here != nobody)[- T3 m& u$ g* {5 Y  I# a5 S: I
   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.
+ E3 O2 e/ u2 I- Q' o# b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, x6 S. s8 H# w- z: S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, O" D$ w. h5 [' Z- k
   set [trade-record-one-len] of self length [trade-record-one] of self/ k* t( M7 T# n. B2 k+ J
   set trade-record-current( list (timer) (random money-upper-limit))8 e: z" L" G1 `% r
) t2 [' K% O" g6 H$ h5 ]
问题的提示如下:& W+ l$ r; u  J' {" Y0 x

, c/ K$ V! ]3 l# F! x& h, u' O7 eerror while turtle 50 running OF in procedure DO-BUSINESS
8 s1 m7 A) i! D  called by procedure GO) F# V7 L9 ]; b$ l: J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 k* m. F) b8 N
(halted running of go)1 F: Z6 y5 @) q! k8 Z/ a* Z. `& x

( S9 \: E' D# g9 f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~~
1 Z, L0 j& l9 T/ W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
8 C; B6 K/ [% L9 rglobals[. [; O! l& J# _) `( r3 F* n3 |
xmax
8 u1 ^! T2 Y/ j& Zymax" e! j2 L& m- [. y
global-reputation-list# K: X* r5 j4 t+ d0 w; a+ e) S3 |

; I/ V- G1 [5 G, C;;
每一个turtle的全局声誉都存在此LIST' R& J$ u% {) G% N) y' ?  `7 b
credibility-list
0 Q' @: K2 T2 ~;;
每一个turtle的评价可信度
, |7 y- B) H6 qhonest-service
/ E3 |" v8 K: e" F6 u. E! n. W& lunhonest-service
) d/ q4 J, u- O: a- doscillation- m9 ~! e5 N, @* R" X  I" g, s+ B
rand-dynamic1 ]8 P" s/ x/ k. ^( c" R# K
]) K# R% M' c& x$ p) w
) ?% x) M3 j! X% G- p: d
turtles-own[) r' N5 B( V: e* Y
trade-record-all
/ z' `7 e1 \' }; f( c- q;;a list of lists,
trade-record-one组成
  W! H5 V2 ]9 D5 b- t5 ?trade-record-one" K. j  M: L4 O9 }- z# o% X& D* U
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 D+ ?0 g+ W; b2 `; @
( [+ e# \- c8 O0 c6 Q9 V+ x
;;[
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]]
/ c& ~4 c) p8 r$ Itrade-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]4 b& N4 f! U! f' V4 S
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
5 z0 {! x/ n% U. s3 v5 eneighbor-total3 d; G: l, q  c! k7 \
;;
记录该turtle的邻居节点的数目! W" \4 S2 \, l3 E4 B6 H1 j
trade-time1 a! |6 Y* B* K" ^
;;
当前发生交易的turtle的交易时间
) j8 r0 d6 z' a- _3 s8 ?) s& U0 bappraise-give
( I/ Z6 z: i7 ]8 M;;
当前发生交易时给出的评价& D' B8 M- Y7 j8 _1 v3 T
appraise-receive' f. q) r7 _1 b4 K9 ~" v+ z- ^' |
;;
当前发生交易时收到的评价
* j$ B3 M) y2 m) k, ~( Sappraise-time
- \9 ]" O: R/ d! O. s6 W;;
当前发生交易时的评价时间3 y- R/ I2 @) P) m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) w# Q  t7 m  z* |2 H' X' n" ztrade-times-total
; u  E# y' @" T;;
与当前turtle的交易总次数* v3 ~# N- |- C" u( F; y
trade-money-total, P" x8 i! s* X- G, s4 O( Z7 A
;;
与当前turtle的交易总金额
6 ^) V/ r( x0 A* b2 M( T3 ~local-reputation
: ^0 l8 j1 I! iglobal-reputation
, R( S* L7 u/ F$ R( n" Scredibility% \' O9 r: X/ |9 c& J
;;
评价可信度,每次交易后都需要更新" W6 R0 U  E/ a2 N) y% J# F+ U$ H
credibility-all( f, n' R- q/ j& 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
) G* K" K9 I+ @" s! K" p& H
; M3 K6 N6 `: s7 _) @1 |;;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0.51 p& @1 B: r3 U! C
credibility-one
$ v  o$ _% s3 g1 a  _" ]+ N;;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' u% N" R! i( d$ Q: ^4 x* x
global-proportion
+ V* r9 U( B! [customer
4 t+ h8 P- \7 a) h6 G) k: Qcustomer-no
/ _4 D2 `. R) j3 w7 S2 Etrust-ok" _% A( x, j7 f
trade-record-one-len;;trade-record-one的长度
% ~6 U7 V, R$ [' R. i+ ?: j! `]
; j( Z/ Y( Q; K# u* [
; N# F' n! H9 A7 e' }8 t8 H/ y5 z) N;;setup procedure
3 j* I! t) U8 S( K: X
4 {# Z4 Z  A( {to setup) v- y" l8 _- g# @4 i
- M7 ?( a7 r" k1 s3 p0 `/ [7 i* O' {
ca
. B' {8 l% P# v/ k  X3 ?

' i- I; U. T* P& h' Yinitialize-settings
- Z( }6 x9 o9 h8 l7 j4 V% `3 j
5 o5 k7 o6 ?' V: V3 q
crt people [setup-turtles]

9 X/ z, ]6 X0 v3 ?% }5 _" G3 a! i9 ?$ v
reset-timer
9 u- S: k% T2 Q0 C3 g! p# ?

& |% |! ?5 z, r5 k) M/ upoll-class
4 D! w  W! R0 z8 ?! ]3 `. i. f' ~
3 U) I  ~$ s) N/ n6 h4 E. t
setup-plots
/ ~  _) p% E/ f2 a9 s! O

* @$ _$ E! e7 w) ~: e: Pdo-plots
: R1 f( _8 V+ l. J5 c
end
8 V% C2 Q/ H  U" Q- B4 b. N5 f" ~
; |7 R( ~% Z. Z( w0 T5 Z: ^; m- dto initialize-settings' V  C9 p0 v' [% b. F, M
$ z& _3 G; t* T  L4 |7 e
set global-reputation-list []
6 g( [( j1 w! A) W# L  m1 m6 F

, g8 v! V7 a% T- aset credibility-list n-values people [0.5]
+ p) Q; T( O; @  O

1 M4 l. N# k7 Oset honest-service 0

2 p3 E+ D, S" e' f' W
0 o7 h5 \3 X+ U" e  Kset unhonest-service 0
) c( M, z* h* ]9 A5 P2 j. o6 s2 H
5 x* z- z1 J" b+ }# G% ^: ^
set oscillation 0
# ]# s1 i) K  A/ p& m, D

" p8 I9 V2 I, X: _3 ?" Dset rand-dynamic 0
3 z1 r: A; w/ ~0 U5 F" D
end
: _9 M7 {5 Z7 B* P
7 r3 X, V& g! ]- Y3 Y* N% Ito setup-turtles ) o: m4 o/ y$ N1 N" h
set shape "person"6 n- o7 I: q6 ]! ^+ J
setxy random-xcor random-ycor
% f% O) J% ~1 X1 R$ K/ q5 P/ fset trade-record-one []
2 l) p4 i! d1 d. b% S, u
0 {. {% S7 l+ J' J
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 L8 p9 k" a! }

8 y9 x: N2 m2 cset trade-record-current []2 i. r: W/ B( r  |
set credibility-receive []
: G2 _: E& M' C% }, q2 O1 nset local-reputation 0.56 |- m2 J- O- t/ j- Z$ H
set neighbor-total 0( L! u  W: ?6 i* M: Z1 @* C
set trade-times-total 0
- |2 w! V, g4 ~: i  Bset trade-money-total 0
8 A6 Q" }+ f$ I& Hset customer nobody- J! J4 G8 Z" `* k% \
set credibility-all n-values people [creat-credibility]" ?4 |/ B% t. h) `/ `! E% H
set credibility n-values people [-1]! h, u5 e  k# J
get-color
7 }6 y7 y" \1 s6 g  w  i" ^3 l

' }# t7 t5 E; l- |- Aend
" v% V) H2 o, A7 H* h/ j( Y# x6 F, X, {1 m# w2 g& b' A; @
to-report creat-credibility
. C3 r/ Z! C, b9 P% L3 Qreport n-values people [0.5]
% z9 x- V" b. h' k' L2 U1 ^% uend$ K, Q5 e9 `, `, J% c$ j7 A
( k# O$ q: t- n. U
to setup-plots' t; C  S7 f7 B2 Q6 x
0 [2 p. H# K. `, G3 ]( N3 Z% _' p
set xmax 30

8 L; f  g9 M0 \
! W6 g5 C& P, {7 A1 I% Rset ymax 1.0
1 y, x( H4 M# B0 L3 F
/ K7 ~# z( P, d4 H! ~. H) y
clear-all-plots
7 [" f: `$ }$ F6 P9 @9 I
9 c# O+ B4 I; V6 K% E
setup-plot1
* P! c3 X* g) G0 |  ?9 E
/ F7 \- R3 i, L# o% }  \
setup-plot2
1 A% ^( a7 Q. M" }1 @6 H4 q

$ L& W# W& I1 e+ Z) Bsetup-plot3
6 ?2 Z: E5 e' i
end
2 @/ [$ G5 ~! L, J
" g. l/ h5 M& E$ I8 M;;run time procedures
/ D. F  J: [: x6 T; l, i# @8 z/ `/ Q, X' G$ P; \4 @
to go
1 d1 r' m9 l* Z/ z. }& `: D) v! D  K# q2 j
ask turtles [do-business]
$ z7 l) J3 f" \
end! R( E+ |- \# {; |7 J3 {

& f  O. |* l" }# A# k/ E8 |to do-business
: H) ~) a/ s' E+ E# G$ x/ t

9 W, J  ]) a7 A- B$ `  ]8 Q0 o+ D8 H- ~9 p3 ^3 \# C6 S+ K
rt random 360
+ h% p1 I0 p2 P
, z: }4 ?: ^8 x/ `  V+ x8 g! h
fd 1
3 f1 p5 u/ @0 k; v

# z! q7 C' U6 v7 J2 Lifelse(other turtles-here != nobody)[
& p! x" ~( ^) u( I' ^. b

% d( t- u1 e. {# g& g# c* S0 oset customer one-of other turtles-here
( D0 x* B; x7 n
8 O. Z; s2 `% O, e
;; set [customer] of customer myself

5 s  ~3 t8 ^" z: a$ C' A. a/ K8 [- ]: ?  j7 u
set [trade-record-one] of self item (([who] of customer) - 1)
+ M3 ]1 u" \" a[trade-record-all]of self
+ T% s6 E2 h, B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 F) C  d' S+ s& j2 Z6 k( y1 y1 g; j0 f6 Y" M5 Z, E
set [trade-record-one] of customer item (([who] of self) - 1)
- M5 r2 v/ q$ L5 q7 E1 _; I[trade-record-all]of customer
: x/ T' e5 Q2 F/ K& r0 J2 a% ^

+ M9 {& M* a. U6 {+ ~3 ~set [trade-record-one-len] of self length [trade-record-one] of self
9 K& p1 p3 p  H% L9 p( C1 c

0 d' f+ n) Q8 K) m0 C& w+ ]% eset trade-record-current( list (timer) (random money-upper-limit))
5 @3 X, s# e4 T# W! h

( C- J1 r/ H8 v& X) M: l- _" Hask self [do-trust]$ l8 }/ A- x8 Y
;;
先求ij的信任度
  u' z0 a4 o( z7 `# z% Z9 K) Z2 B: k* ?) D6 ^
if ([trust-ok] of self)
' c0 B: @7 j, \" T2 s;;
根据ij的信任度来决定是否与j进行交易[
/ |  p" J8 o' S; [: \. K1 H" Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 P+ ~. g% q! y9 b# D' Q1 v( V5 X4 g# M" e, `: ~
[
7 k9 ~0 c% D$ |3 M5 m2 g
  |7 e* z. \2 X  t) t! l7 q2 k4 e
do-trade
9 \/ N( q/ f: [4 ^8 T6 F- I7 S

) _6 f: p9 m$ L& vupdate-credibility-ijl

5 @( n: `/ o: ~
" ^; \6 i+ M6 [2 aupdate-credibility-list
6 k3 {# H. ?$ E) `7 x4 o

' M5 j7 T0 h$ [! \- K9 ^4 X6 |. u8 N) G; E3 b
update-global-reputation-list
9 ~. n1 v" l! s" O
/ k4 U$ @& q- u! K7 ~! |$ `) E
poll-class
5 k* Z) ?4 B' c7 ~& F3 p1 s

3 z+ _( u) m: K$ ?get-color
. C/ |% p2 o) n- t8 D$ f

2 ?% I3 ?/ \/ u# u, ^6 B]]4 M1 u& ]( }$ J5 ~' ~6 C

9 F! E4 s0 p; f, @; ~' M" F9 {$ S;;
如果所得的信任度满足条件,则进行交易( g; S6 V- {* ?* N

" y' h: I' [0 K: v[
- d( k  M6 v. K

' r$ {% Z; N5 v. c9 H( n% Xrt random 360

, |9 h& M7 U% J7 K1 [* ]9 L
6 E/ w& K' _- C' cfd 1

" x1 V" o& u; [0 t, z- _% M9 N0 Q! ?8 w+ J
]
4 S  ]. C( B8 U- M- _: ?: {

: m8 C3 {1 {/ R0 M: v. Z% K/ X+ vend

6 h, l  U7 }5 W4 E& {3 ]6 ^- g" R6 }8 B1 N
to do-trust 1 m9 M5 Y0 r' f: `' b+ o6 }
set trust-ok False
' L' P' W! A. r& v: c$ t- Y9 i5 ]5 y0 r# n

, p, \4 s& E7 zlet max-trade-times 0
0 O9 B- D( H. J3 e3 Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* ]( {- b- z) Y6 D& o) Q+ L7 I0 ~6 U
let max-trade-money 02 v; J- p' k* x! W) h4 ~
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" G: s/ j* c: S) |5 a; t8 J+ Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ a' n& v6 Q4 h) z$ ]9 C7 d
& B1 f8 W: w( y3 s) @% B
3 x, [( B% d- _* l3 ]4 `/ B# p
get-global-proportion8 n3 F& D0 h' M& b/ V# H! q
let trust-value
' N/ t2 u9 ?7 c9 Y; _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)
/ B1 s* g6 N, R) X% G) p4 }
if(trust-value > trade-trust-value)' h$ Y/ W5 o- r* T
[set trust-ok true]
! t& t: l3 q6 @% S+ G1 k8 Mend# R& M& U3 h. Z2 }1 x

* {3 ]$ l. z2 Y: L& [7 lto get-global-proportion+ S2 Z; K. c8 O( ?
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  j$ J8 e; X: \  {[set global-proportion 0]
" A9 ]  i) ]- W2 c+ I( o[let i 0! E3 v; V3 k1 @( h/ m- J6 O
let sum-money 0- j+ h+ F6 D) S
while[ i < people]
+ e6 O" Q( x9 a' ]1 O[6 U2 R3 m5 W" D  \& n1 |
if( length (item i
/ w( q' u" \0 F: F" w* h[trade-record-all] of customer) > 3 )

: L2 M/ Q) N" l7 [/ O: Z5 d[* T: P9 ?5 X  L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- e, O5 k2 Y- |
]; x* |# z* o" i: w# t) Z3 s
]4 x7 r6 e4 J  d* [5 z, p( c
let j 0/ O) X2 X) M" e9 R: y3 B
let note 0
6 Q6 q4 w1 A% b( N: g. A% H; nwhile[ j < people]
$ E+ |" X9 W( f8 s[3 \8 I+ f7 @+ h
if( length (item i5 x. N4 s( F3 v" C; z
[trade-record-all] of customer) > 3 )
3 O7 ]4 Q; F: Z( M& p6 o6 E1 z
[7 C2 }% H; @' p) u2 F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  X  ~9 N8 E+ O' c* [4 V; Y0 T+ k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 N! k; a) y# S* i; C/ B/ z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% J( {9 U$ T' ^3 l) {5 J! W; X, S- N: A" ~]
) R2 v" U& g' m8 P1 v]* C' m, Q. t" L  E
set global-proportion note7 D. Q' \0 c6 j0 d$ n, s
]
% o  Y/ }/ I+ Y" w5 L0 Bend
/ ~9 Y. t0 |% F, H7 P5 M  }
) a" z# F0 `/ {4 ^, s  Rto do-trade  z) S; _3 X* i% U# W1 L
;;
这个过程实际上是给双方作出评价的过程' @1 y  b( E( J6 z& f, ~3 P5 Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 O% q( Q0 u; V: Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 K+ ]* O- u: w5 j% Z
set trade-record-current lput(timer) trade-record-current) n* ~( s8 `' l7 ]* b) ~% J
;;
评价时间
! a2 j$ d+ M' x# iask myself [
+ e1 |$ C* K, Iupdate-local-reputation0 m! V( _) C! }( ]( d9 ~
set trade-record-current lput([local-reputation] of myself) trade-record-current
" h8 x5 X( s5 Y; W' |]' p0 N2 x7 Q2 c' o8 a4 Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 T7 z) D0 d4 c* P3 }0 ~
;;
将此次交易的记录加入到trade-record-one
7 p; c7 W- Q1 v4 o! o/ Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), a% C8 S' d% k3 a9 B. v4 i- d, j
let note (item 2 trade-record-current )3 s' u; q, P+ e6 G. E
set trade-record-current
, ]  x( J: F8 O& h, b1 s* p(replace-item 2 trade-record-current (item 3 trade-record-current))
& G) Q' p( a7 E
set trade-record-current
/ d) r' _: ~8 U(replace-item 3 trade-record-current note)
# a2 {/ B( o' D- Y; P2 h. ~
& ]8 z3 {. ~8 E+ g

$ t+ v1 c% n1 Z6 N* eask customer [& |7 _& z6 Y, F9 m  q. z! h  D
update-local-reputation/ B2 M* k/ q/ f# J! E7 ?1 Z
set trade-record-current) s5 x$ t( n  f, Z8 n/ x$ x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( g7 s; v5 s' e. z
], V6 p5 D) k* }1 y
% @! `0 a0 b1 S2 F. a3 P
# {& v1 _0 O# G: r3 u$ w! g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. \8 G1 b7 g* _# |& @
, ]+ A; w) A# m4 g2 o- _& a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 k/ b6 n" L0 R- J1 R;;
将此次交易的记录加入到customertrade-record-all! P. |. s3 K( r* z
end
# E1 s% q3 x- M+ D5 u2 C. o0 W
$ }# x$ w- D! j6 W- M2 Cto update-local-reputation
; c" f& O& H. n, m5 \3 w# x4 xset [trade-record-one-len] of myself length [trade-record-one] of myself
4 k- p' A6 b" K' h
  L6 F8 f- Z3 u# X9 q% d: R6 b+ t; H% \0 ~8 S( G+ j7 @! F
;;if [trade-record-one-len] of myself > 3

4 }. q: Q1 N1 {3 X* Bupdate-neighbor-total- y! n. q- k+ u; ]5 \
;;
更新邻居节点的数目,在此进行8 t1 |- O7 a+ U" N
let i 3* d/ U+ |& Z) v: I2 _
let sum-time 0
5 X% s8 d+ B$ t4 Qwhile[i < [trade-record-one-len] of myself]. L* b+ ?& w) {, w. @
[
1 S; ]) b3 d1 Z  `8 k7 u$ X) Tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 U4 C" m- e9 K2 {, ^+ vset i
! o4 K- U" s# B( i + 1)
1 ^1 k0 L/ S1 b# Q
]
7 q3 y' Y) h4 T2 M* alet j 3. l* i  ^4 x3 U
let sum-money 0
1 ]- t# A  |$ w9 Nwhile[j < [trade-record-one-len] of myself]% g2 o# P9 ?' Z# D
[
. p+ s) P) i1 B* t/ b5 O+ A3 G! xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 `7 |' W% }  `* P8 D# |" c9 ]# E; Zset j
( R* {& G6 G$ E& O( j + 1)

2 y& _, L2 G  o/ ^8 {2 h2 b]
, N5 r9 X! o9 D- b' ?let k 3; ^' p1 m1 s  o4 ]- r& l
let power 0! U7 l5 y& `8 g3 \( j* B
let local 0# a8 z- }& R! |4 H+ b6 `1 i8 M1 I
while [k <[trade-record-one-len] of myself]
, Z! `4 p; N& h* N' T9 h[" }3 z/ E7 }; C- J
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) - f0 w6 u1 n  u, Y* v
set k (k + 1)
2 }: {! z/ i: t2 c$ d) A]) c0 a9 Z+ ], \4 N" v
set [local-reputation] of myself (local)
: I- X, j0 L0 e! E( e3 d- C% \end
% F/ r. v( r5 I8 `: e( K: ~6 e6 o! w3 a
to update-neighbor-total
1 e" v) z* I+ N& d' S; o$ K5 }5 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 ]2 r# i. Q+ O' Y/ m# p# _
+ j7 o3 I4 S8 C8 I' y
/ k; I* d) C" `/ L- ^; |
end( V2 B4 `+ ^8 E. O2 ~+ i

5 h2 R8 n2 y$ a' b4 ^/ O  Gto update-credibility-ijl
! `' F" C! G% C+ U  t  ]& |+ D9 N3 T7 D) t, J
;;
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。
. }7 y8 T3 g0 }2 J$ F- ^let l 0
5 {0 I. [9 \# S& H& jwhile[ l < people ]3 }( x  z4 \0 F( x3 b: v) D% m) @
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价0 Q) m) m% O( D& G5 U2 c
[2 h2 t' J+ g* A# b& V9 _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). `' o! I; i2 i: V4 Y8 W
if (trade-record-one-j-l-len > 3)1 K( `8 |# }# W& e% y; u
[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
0 S! w/ H) W2 `6 L( ^+ Klet i 3
% C( a! _* _5 I4 U7 Llet sum-time 0
; h4 _% S4 A! n5 ~/ ]while[i < trade-record-one-len]
2 S0 M$ d, W$ ]8 X3 Y8 N[2 n& Q2 M  R5 @+ p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) g1 M! J+ L# R" ~/ _' V2 L: L
set i  a  S' H- c6 z; D5 G% {- C1 C# a
( i + 1)

) ?, A  ^& [9 p. e]0 Q$ W6 r9 ^' s& b
let credibility-i-j-l 00 Z6 e9 C/ l+ T" x7 m  N( X- `# G" e
;;i
评价(jjl的评价)4 X$ O0 T  B* G% a; T* |% c; `! a
let j 3- \. N( ~6 v! C3 B3 I  w; }5 s4 V
let k 4
+ w8 @- A! \# b$ ?. y/ p, Cwhile[j < trade-record-one-len]
- u; g( i/ H8 o( }1 O  X7 Y[
) M' n  Z5 b, M3 B" r5 I. S" _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; g8 S. L/ v/ ?
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)0 a+ v2 ]% H1 i8 D  i  @
set j+ h" M* T( b6 @
( j + 1)

% A3 ~1 j" W9 }7 ~0 F  i]; g9 r6 C: k7 j: U
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 )). u9 p6 W8 J! {6 z$ Q3 A* J

) M: j; M6 a/ F1 J1 V8 m4 q
' b. ~" ~9 k+ h$ N( i, z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 A/ C2 V* u% S7 _7 _+ h! ?6 E;;
及时更新il的评价质量的评价, J- d2 g# F  X3 U# A
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 i! G, @+ [; P+ hset l (l + 1)
% r) k. q& w& ?, x]
# L0 \4 j7 P) }# [, ]* o7 d" q* }end& H: h2 ]6 ?# @

  z$ j" @% o' P7 g4 b7 _0 Eto update-credibility-list
: _; t# y. D- q- F$ U# U: Klet i 0
) f$ s3 R; d+ l1 S- B! Pwhile[i < people]
$ \' V4 {6 G* D/ o9 b$ y% M' `[, e6 H' j% A% c- T9 A2 }
let j 02 }4 z9 h. ?6 D1 P
let note 0
) i; z, ^; U! n& C# @2 q" slet k 0
& V3 I8 ^3 s" |3 G( }4 q6 _( q  M;;
计作出过评价的邻居节点的数目7 I5 v. _. c* P8 X- M
while[j < people]
: l; ?6 L6 @/ w; _[4 u, w3 A* L! g4 U! w3 k! s
if (item j( [credibility] of turtle (i + 1)) != -1)
. k1 O& Y" R" W9 A;;
判断是否给本turtle的评价质量做出过评价的节点. D$ v; V. ^5 \
[set note (note + item j ([credibility]of turtle (i + 1)))
7 h5 u7 b, m0 ~% d;;*(exp (-(people - 2)))/(people - 2))]
+ I5 e. [1 [2 m/ E
set k (k + 1)9 d7 q8 B& ~" R$ t8 b9 w
]
# {7 ^9 i' r. [6 x$ Gset j (j + 1)
: H& t( o# D8 z4 ?+ A2 T! a]
& k. G5 ?/ o' b( qset note (note *(exp (- (1 / k)))/ k)
. u& t2 c0 Q* Q. u6 Lset credibility-list (replace-item i credibility-list note)! V: h- G' j5 m( u: d8 {  h0 I
set i (i + 1); ^4 Q# L. K- P' X; O0 d6 C
]
2 ^0 [6 c3 b7 A/ N* @! f" ]end
4 c) Q, \* `# f2 K* v. N7 K
% ?5 H1 @( g) Z, ~" }to update-global-reputation-list
9 `1 V- l/ h' |let j 0  f$ @% I4 L8 d: |5 R9 l5 X2 w  X
while[j < people]
4 I2 I% |. a, h) ?! {9 I4 O  U- H[& y6 O/ w1 m) h: g: D/ ^
let new 0
7 v( p6 ~( d4 b. U  j;;
暂存新的一个全局声誉
. \$ E7 Y; K9 T0 d+ dlet i 0/ q, B& H6 y* m9 d
let sum-money 0
+ I8 V7 ~# E2 }2 J6 |! i7 Dlet credibility-money 0
7 b% \) F$ ~# c4 T* y! wwhile [i < people]
! a; a' N- }2 n0 Z[( |" E% J) K% l! c/ w2 L3 [- r
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) D6 P/ u4 I; c$ ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 O5 L9 v8 m/ M: b$ Z3 rset i (i + 1)
: q+ m7 Z, w3 {9 |: F]) E+ E  T9 ^" U  x6 d8 e: k
let k 0
1 Q9 B5 t$ |7 Elet new1 0
  J' q3 t% Q+ O- H+ `& O8 xwhile [k < people]) U7 {/ J2 l/ H1 A
[+ s' P  {  @: R# x
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)# t# y( D# v. _
set k (k + 1)9 ^' M% l' T( X# F% X1 @
]
' x  R0 \) W: n4 V! w" a- ^set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - U; I4 |/ V7 j4 P% g: r( u( c
set global-reputation-list (replace-item j global-reputation-list new)( N! C) u6 X" }# q5 U
set j (j + 1)0 O; Q- l$ K1 D% S: h
]
6 h1 Z" y# @! ]: Iend
$ {# h) J1 r) Y4 S& S7 z
0 Q0 N9 \1 r9 B% _3 r, `( ]& C6 ~% d
8 b2 G8 X& @  |( a9 m
to get-color1 ^) d* h3 P# r, r, ~6 u$ f

( }0 y3 T! Y3 a1 }set color blue

' Q) @2 o7 q+ Q6 |) i4 I/ O) nend
: Y) e2 ^6 U$ T- z$ {2 C2 G+ W! m# z% U9 f. p
to poll-class
7 f. r5 e/ ^5 s+ vend
0 ]7 V% w+ f# d4 ]" L
: O5 q$ i! P1 b6 k: y* _5 cto setup-plot1, J% R% t5 C  z

1 I: N1 v3 e9 R0 J: W5 [& ?set-current-plot "Trends-of-Local-reputation"

2 A0 {3 O+ J" ?' B) G+ o! g# y: B# b5 A# b
set-plot-x-range 0 xmax

" B& w3 T1 w+ }. i  h% E) ]$ i
$ X# [' T* I- s: mset-plot-y-range 0.0 ymax

! O- H. r# P# K0 @& |end1 Z5 k7 i( B' F& ]

9 K% _  Q, [9 V; Q* C4 rto setup-plot2/ H4 K! f' z' o1 n* `$ S
7 l6 w2 J- T$ d
set-current-plot "Trends-of-global-reputation"
  ?  }- Z; q9 m$ f

7 m. S  H2 v7 ^' {2 u5 g  }set-plot-x-range 0 xmax
  k, p- ]0 z4 O! B1 E' n
) ~+ O9 y9 T1 W4 b
set-plot-y-range 0.0 ymax

* J) [5 b' I& z2 e8 ~( Lend
% b  d' ?" z4 I, G' c7 d
) m+ O2 C+ h+ O/ Ato setup-plot3
5 r5 |9 q- G% A2 N3 W, i7 {
& v7 n# f" {) `3 rset-current-plot "Trends-of-credibility"
  I9 b* O' i/ v6 z

2 m+ I& v( ?. f7 K  u4 Uset-plot-x-range 0 xmax

& h5 x1 D! @' m# W( |1 [6 C/ h4 @. K
set-plot-y-range 0.0 ymax
2 _8 Y. }) M5 }3 N. B: D5 B
end
3 i1 l' Y. ~' e; N) F5 o+ Y* f# v# H9 T' K' K
to do-plots9 w1 s6 Q+ M3 \; \! T% B& f
set-current-plot "Trends-of-Local-reputation". B% c( d3 n4 F1 W8 L
set-current-plot-pen "Honest service"
: ~' I+ @2 r* u8 tend5 q" C" W  O; f  U- h2 q' }- d
4 ]+ U. z8 m/ f$ j
[ 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.
2 n; S" n4 y, t7 }) e
! \5 a4 N7 ^% [  ?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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