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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:( h, H* k6 K2 l" A0 m
to do-business ' |' F2 {4 ~4 F0 F
rt random 360
) x# ?3 E4 {2 v1 G3 A fd 1' p- K4 a' x3 O) D
ifelse(other turtles-here != nobody)[
0 _3 I* b! I- x# r   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.
4 x/ C/ A- ^1 M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 n& J, N' O1 W8 s3 m4 U" K/ k  x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 |7 N+ Q- I4 V; _+ V
   set [trade-record-one-len] of self length [trade-record-one] of self  E0 C! Y& ?5 H- E
   set trade-record-current( list (timer) (random money-upper-limit))* n% T! w6 M" m* q

, c3 M) B' ]6 K% _+ S5 y5 P/ @' J问题的提示如下:) N% |! t; }  ?% _, }* H& R

" r; R" [1 \/ @4 Herror while turtle 50 running OF in procedure DO-BUSINESS/ m& A* t- b* _/ z  y
  called by procedure GO
% D" z! J  o9 M! |1 dOF expected input to be a turtle agentset or turtle but got NOBODY instead.  H# ]" h. K, g2 b3 B
(halted running of go)' r) ]: ?3 U8 e, p
# J% ~$ y4 E* A* O' F) K( C
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~~
3 ~2 a' D, F- L& |& m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& p2 @* Q0 k+ g6 w. E# c
globals[! s& f, P. e/ g3 M6 c7 \4 u
xmax
: w+ z5 e, _- j! y0 q$ t7 s0 f- _ymax
/ h2 s; l3 N. r$ V& B0 T5 lglobal-reputation-list
9 `2 r; H# D9 N& B
, z, W0 Q, M6 A2 Q$ U  R. |;;
每一个turtle的全局声誉都存在此LIST
* w- Q( z9 K/ _: t" |# Jcredibility-list$ F" r+ X' ]' R, I3 A# u9 @
;;
每一个turtle的评价可信度
# c* Y, f0 O  `/ t/ n' x. H9 Y! thonest-service
2 x! ?* S, ~0 `# y! u' Gunhonest-service
" r2 M# m$ D7 ~+ F" ^* t- R$ h) Xoscillation
9 W  t( k( D* c& _rand-dynamic5 I: \7 `0 H# N- j4 v* J8 z
]
6 F2 N5 E8 B+ }5 h
8 t4 }1 }, F( J# d7 i/ cturtles-own[4 V0 h  S* @6 v5 |/ u
trade-record-all
$ N9 I0 @+ ?! V;;a list of lists,
trade-record-one组成" M. {2 P3 ^+ F7 G) P& \
trade-record-one% T8 C/ C4 q6 K6 {2 E0 B) y& R( 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: H1 I+ x2 u$ }# N% p+ G; V
3 C& V# K5 K/ b% }* \; U
;;[
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]]( S8 ]' {. n! U9 s# ?# T5 h
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 p6 z4 o, N3 {6 ~
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& ?3 D* L- S2 Uneighbor-total8 n+ S6 A  C% ]: q) V/ N
;;
记录该turtle的邻居节点的数目, Z8 U7 [7 _: T, H; f* p
trade-time1 z/ l( Y) `& N  p( c$ O
;;
当前发生交易的turtle的交易时间
; X5 Q  g$ T0 L4 }! }appraise-give! B+ T% x. K5 q; u, S5 c
;;
当前发生交易时给出的评价
2 q' }) ]( j' L2 B' n  s5 q( Aappraise-receive
, q$ G* l5 K/ d$ K' g;;
当前发生交易时收到的评价. k! l: y0 w5 f! g$ B; t* K
appraise-time* l2 C) n/ `% I! h1 E' G0 ^
;;
当前发生交易时的评价时间! a' r. p, d0 e5 S4 w7 k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- |3 O7 J3 \# i
trade-times-total
: v2 a9 `6 S6 W  V( n' ];;
与当前turtle的交易总次数
, l  t+ [  S- Y- Qtrade-money-total
  r/ P6 {- H  V) v: G;;
与当前turtle的交易总金额
, f" E+ k% N) \$ ^local-reputation) N' j+ S' l2 ^' A# h2 j
global-reputation
: A% ]! e& I. q& b" [credibility
/ I3 k0 F1 `# {# z- O9 P;;
评价可信度,每次交易后都需要更新
" x6 @# [6 i  v- Ecredibility-all
  ~& ?8 Z* }) f  v;;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
2 m: e' o& E3 o9 Z9 l6 t* r6 O7 C
& j4 E% l7 M: C$ G& F8 t;;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
5 L( z* v9 f7 E, ycredibility-one8 E* W0 z- J; M  D) W  s
;;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people1 P; T- d$ e$ E& s( Z0 Z
global-proportion
$ Q1 ]% D8 F2 o2 X9 Icustomer- Q# s: I' T* |7 t# w
customer-no& V/ y( V/ P9 V, l( h$ ^9 d8 b" o
trust-ok
" S( M0 m9 a/ q- g+ Q2 Gtrade-record-one-len;;trade-record-one的长度
& v" k+ f* [9 s% ]# [# R]- r, H6 m1 _+ [: b" A8 Z! I! v; j

9 D" ?6 H' p( [5 c* S6 I;;setup procedure. a. f) W0 K4 g. }- B. I  r# U6 C

' ~- ]% K! N( N& M3 g9 jto setup
7 r& }! A3 K2 w: g3 K7 K7 \9 F0 q+ O# r( d3 }3 V
ca

. G; ^$ l% q% D( R  F8 V/ L4 m2 w, b3 |4 P3 G! ^
initialize-settings

3 e$ l+ k  ~7 y0 u1 q) ^8 E  f0 f- _0 ?" h3 m1 \. @! `" ]. P
crt people [setup-turtles]

# h2 h8 h1 M$ l; R) g# Z+ y# t. S/ {/ v4 M
reset-timer

: C# c# @0 a$ q2 v( G) v
3 O3 A& u+ Y# Q2 U3 ppoll-class
2 h& ^+ w& O  D9 C# N

% {7 {5 }0 M% \) h# Jsetup-plots
4 T' C9 z2 |4 ?: E4 e/ W1 c

- j- [6 e+ B1 Tdo-plots

  _  A, c5 @6 E  Q. eend* @& ^1 h% Y. Q5 p8 P1 w% c! X( `

0 Z, E8 X/ x9 t, v8 k6 Y( Ato initialize-settings
9 F( {1 E2 E! I/ j9 _( h) \; i, ?$ B8 @& i# p
set global-reputation-list []
+ l/ z9 V. R7 m( m. G, G

2 [- @+ Z2 v; y( cset credibility-list n-values people [0.5]

6 U7 u1 r* L$ n: E& i
* }4 i& e& f/ {+ a' B$ rset honest-service 0

) [1 N# m6 n# \4 Y6 z' w. C: U2 J3 O& k1 p8 P' |% [9 e$ n+ a
set unhonest-service 0

; I, \$ b* N* d8 b+ C
$ N$ V- D4 L, nset oscillation 0

* b6 H+ Y; L- i# I2 Y, W& Y8 \! K
set rand-dynamic 0

5 Y+ p8 J$ H& J0 S; bend
3 m' H9 J2 b8 F9 ^5 K2 B8 W( ~' N+ y% K, O( P8 e# @
to setup-turtles ( D. ]# h7 g1 u
set shape "person"
: d/ J( A  d5 msetxy random-xcor random-ycor
4 Y" Y0 P$ t# j# [% |! W* g. zset trade-record-one []
5 x' c2 E2 Q0 [' Y0 J1 J  i; k
; j. W4 F& B% `5 x
set trade-record-all n-values people [(list (? + 1) 0 0)] . y6 ~; f5 s6 }8 `. P

1 r3 q4 E! k  o( K  f3 yset trade-record-current []! |* M, S( ]" \9 I) S, I
set credibility-receive []
9 f1 p/ }, [0 B0 b7 n! t2 J- _set local-reputation 0.5
& @6 w) t* _2 H! Z4 U3 s+ Gset neighbor-total 0
1 q. z, Y1 `% N! y3 Kset trade-times-total 0! m# d' f+ J) ^% G; o4 n
set trade-money-total 0& `5 v) k4 Y/ a% d) u
set customer nobody7 c( q3 t4 \" d+ P0 b6 _
set credibility-all n-values people [creat-credibility]
  d! [, J5 ~' ~1 U1 {1 n" }set credibility n-values people [-1]
( G/ g- ?1 T( s+ g- H; mget-color$ x0 _9 v; g( E7 ^' @' N
( X3 O% C5 B1 w9 I/ o
end
! M6 _  n5 G: p4 \/ Z" A
  [6 C6 b3 l; W6 R7 Q- L7 W2 Hto-report creat-credibility4 ?. d, @& n2 x
report n-values people [0.5]
# e+ J5 }1 Q$ J$ X( lend+ l' i8 u& G2 b+ [$ s' y# X% \

. ]$ b, [3 B0 J4 j/ @/ b- Qto setup-plots
3 x4 i! w0 w3 x+ A8 w4 Q: Q1 q# L# `: X
set xmax 30
# I' F' I2 w" G7 z

  e" G+ g' w2 S" W% }set ymax 1.0

4 d( P1 |6 q3 P& ?/ `+ [) o9 I4 J& H8 t! ?+ N
clear-all-plots

; Y9 p4 T$ Y; u  s& C/ T% o2 O
: \& p) R, P  X( osetup-plot1
# Y; A$ [2 e1 Q: M) {

1 ]# `* x% g# ~! D9 |. J- Y( ~- i' @setup-plot2
& @/ X! A  R& C' {6 \  [; H2 G

' A/ n! f' W( n# [/ I2 p4 gsetup-plot3
- z& _6 N7 R, a* p4 I$ |
end
! S) a* g4 s* X  U& m, |; n6 l* R: P, b) R
;;run time procedures- i  h* f: n' G

' P% M7 M$ G& jto go
+ ^, R' x- c8 z- H3 M/ w. F7 |
- F( j" Y/ P0 E4 M- q  C3 |ask turtles [do-business]

( u5 ]7 u2 p0 a$ Cend
, k$ J% M* A8 C2 m3 w& f0 h5 B3 ?& O# J" d3 |
to do-business & k$ H5 R4 w) O2 N  w/ Y( ^

2 q8 B* a1 n, a7 f% o$ A( l2 f+ m; ]2 n2 n! Y3 y+ `: x& K
rt random 360

7 ?- v$ Y7 o( H, C' }9 s7 k7 Y4 ?: L0 E5 m# \: v  h' s0 A
fd 1
; p3 y4 e; G3 ~0 W; \3 w& A# X

7 ?  B- D( [& F1 Pifelse(other turtles-here != nobody)[
5 a8 ^" U2 Y- q1 W- G$ o( H3 u# a* }

  [2 W4 x& `* O, g' k; Lset customer one-of other turtles-here
, }1 p3 N- [' e* |* d7 z

% a  ^" P2 f- ^. i! D;; set [customer] of customer myself
$ P7 I. N: k" b, J1 u, j

6 o+ U, o/ R% }1 M2 Hset [trade-record-one] of self item (([who] of customer) - 1)# p. t7 I, c7 H5 [- y4 g+ c
[trade-record-all]of self
  Y$ e. m. n; b! |+ W) ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" Q+ q) M' y$ B! |5 m
& S  o( q* e# \% s4 p2 n, E# @% X" S
set [trade-record-one] of customer item (([who] of self) - 1)
* h2 u5 L" G0 b( s  s4 n2 _% A[trade-record-all]of customer

- @' S5 M# q* b2 b0 K7 j6 w
" @4 Z2 |; i+ P' G9 Z4 z' n* n! |set [trade-record-one-len] of self length [trade-record-one] of self

& G, M2 G8 ?: e3 a* b) D# c2 y% _/ b
set trade-record-current( list (timer) (random money-upper-limit))
9 g8 B! z8 Q% ]% v
" I& f/ |4 f' l5 m8 `( Q% z
ask self [do-trust]. @$ K) G" w$ ~; S. r
;;
先求ij的信任度5 V$ B7 r2 W& W5 Y  W+ P/ w

8 c/ K3 u1 p/ y2 @if ([trust-ok] of self)
8 j  V5 T3 L7 z! u! q* q# s( V7 Z- x;;
根据ij的信任度来决定是否与j进行交易[
/ ^5 r8 ^5 r3 V2 X8 Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! @3 A2 H7 S6 H& Q. Q
8 u6 C; k3 `, B$ K- I* N[
% J- s& R5 R+ [; H2 `, J2 I# @2 D
1 g. [: U0 U$ u
do-trade
! ^4 B7 ~3 _. A' q

5 Z, L) y5 }& h8 m% I) @update-credibility-ijl
1 k) j) ^8 N% F8 C. I" s
  p$ G$ x# ]- Y7 x
update-credibility-list. L1 J% b+ l- d9 k2 I7 c: _
$ K' P! ?) E5 A9 U2 w" C0 i

6 k, J5 A; h) D5 n) \9 n) I( R/ Rupdate-global-reputation-list

2 l4 F* X5 e% \; w
' H' S* c+ ]3 F0 Q  S  ^poll-class

+ D4 C) S& |# }* O6 g6 q8 d- h  x  k4 s" U, d9 a' C( k1 S% n* W$ t
get-color
) ^2 T1 X, Q* S, s! c! W+ q3 U+ v! z- c
, b0 H# d: f9 l
]]4 E7 `. S9 Y( V: b

0 D: }2 Z, W! v;;
如果所得的信任度满足条件,则进行交易
; {: G) o) Z9 y9 r
& A' @2 c* N$ Q! s5 K  d[

) D" o/ T% x1 T* w: w$ K9 p$ v7 f# q8 @  k
rt random 360
0 x2 p! X. |$ M" T$ D

: }( m0 B5 u3 v/ Wfd 1
$ z# G1 k8 @, Y. A  g

1 @- {) C& }7 `- l/ ^]
9 b! y. F) {) T1 ~  N4 V
5 _1 l6 @/ I2 |) h
end

! \& y$ V% O; ^6 K4 S& w
/ s; Y7 A7 z5 }8 Q+ w1 T1 xto do-trust
. _3 k) b; P4 {# ]) iset trust-ok False& Z0 N  S8 r1 ^

/ D6 E$ J% }. I' y6 a4 L! c( I
9 F& [) t  W" F7 k- t* `+ q
let max-trade-times 0' w* P* g+ r! O: ^: V8 j# w! |0 c/ o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 B/ P9 L9 ]4 B4 B  [5 Ylet max-trade-money 0
/ j. k( C; \. Y$ f, {% X5 Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( ]1 F" Y. G: J. |2 ?6 n$ Ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 a3 p% x8 N1 d' ]2 ^
6 M; q! G# Q1 z4 r" M% w

8 L* S9 i$ \! g7 X/ `6 nget-global-proportion
/ g1 C8 b) G. A# |/ {let trust-value
/ {& V) d% ~( ]5 p. |" d; j; Y4 ?: dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- u- J( o2 d; q5 q% B$ {7 bif(trust-value > trade-trust-value)( Y: z0 e0 K  W; a* ]0 k$ I) j
[set trust-ok true]
! f7 h* c" p8 G( v1 h1 fend& @, F7 O( ?6 k/ J$ J- }; `

9 I+ T: O# w  z" R% v5 y& B3 ?5 Oto get-global-proportion
- M* F6 ~/ }# q% {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" c* G8 c/ ~& t, e6 s
[set global-proportion 0]0 \) o$ ^2 ]5 @, E
[let i 0% d) G7 @6 u! W! x/ ?0 b
let sum-money 05 a4 c- B( Y( D) z. b: j4 w
while[ i < people]- D7 ?) l8 p8 C# z+ L7 w
[
. d' ^( |# f8 J7 j* f4 {if( length (item i
' i- [8 r' ]- T4 E" Q[trade-record-all] of customer) > 3 )

+ G! F  Y1 B6 Z( u[
  B+ n! Z+ H* M' F. Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 ~* m1 p. |9 r& H
]. s1 E! i7 l: `" u7 L$ u
]
! E6 ?  E+ K$ ~5 \- Wlet j 0
$ G, H$ a; ]' l3 c  rlet note 0
8 f: O1 e6 i& T2 e' e0 s" vwhile[ j < people]
$ z# \; h3 Y' T$ P8 c+ {9 ?/ G[) ~+ `. @8 \% j. F3 o# J! N
if( length (item i
, S9 c: M6 o2 O, [- O1 E' j[trade-record-all] of customer) > 3 )

+ R0 p+ `0 j7 k$ A) y6 x& {[
1 p7 {( X& T4 I' ]5 a) Z$ T) pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ F6 p, W" s$ h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ ]3 T; P  Y1 ]5 }; `3 P8 `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ h/ G7 E9 b* u8 i- }. S
]# r/ s4 K- _+ o9 O5 i: H
]1 e6 ~& y, d" U
set global-proportion note
5 k+ ]1 F! n  a- t7 s/ O2 _]
; F8 [) O- y) f7 |end
/ x- ]3 j! b4 E1 y  f# |$ r7 Q& r( k) ~# a3 t
to do-trade  b# r( q+ K. X
;;
这个过程实际上是给双方作出评价的过程
9 U! s1 t# c  k& ]( {. L& Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# T! ?0 \; b# w, x9 S8 D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ ^9 W* i! l/ |% S# g- c
set trade-record-current lput(timer) trade-record-current$ o, p9 W! x% j3 d, e
;;
评价时间  f& ]. _3 {) r: a. C; [
ask myself [: J3 O& ^' X$ `7 `- Q6 K' s8 Y
update-local-reputation
$ N' k5 U" d& g* f2 j0 iset trade-record-current lput([local-reputation] of myself) trade-record-current
6 ^( A; D9 m1 C- o% @' c4 ~6 S& A]# s3 X! z6 N1 i+ l* d" i  K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# M! P  A* y8 ?+ L;;
将此次交易的记录加入到trade-record-one
5 u9 N5 J% D& xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' K  F: o1 P/ _+ k% s6 {; E) g* Flet note (item 2 trade-record-current ), @& i3 \0 Z$ D% T& E8 \
set trade-record-current8 g5 D) b9 ^8 f* \7 Q! A
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 u# R: Y3 `5 M" P4 x; Iset trade-record-current
* }) i( a% V" B4 P. J: V; N(replace-item 3 trade-record-current note)  D  ]2 w- R4 R
7 ^) o5 k; J; @3 s& D; T9 w" T
8 r9 k; t% R7 y% D: f
ask customer [; m5 I6 Z: y2 }, a/ ?5 q" K
update-local-reputation; d4 {! U% W% u+ i. A. K
set trade-record-current
5 h7 R' S! D" e1 [( I4 p# \3 e  `(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# U/ H5 T' ^* n5 t& h% O& h$ C
], ?7 T: v2 G: {' o& J& ?

5 ?& X5 e. U, n* [

5 T& ]3 ^2 B4 G/ B: Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& Y* a# ^8 R4 h! ^3 S
6 U' C8 u! O$ W* W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. A7 u, W! b' y1 A6 |8 P- C8 t;;
将此次交易的记录加入到customertrade-record-all) p+ I! E! @3 [& p3 ^# ~( u
end) X  G( F( N4 x) F$ p: ]  j
  W+ h; O- G& k7 S. r$ ]# _, i
to update-local-reputation
8 Z+ d& [! M/ J- J( Oset [trade-record-one-len] of myself length [trade-record-one] of myself4 y/ D: b' h. Q  S8 R: C1 ?7 B
7 ~  C1 W  E$ K3 W, ^' j
! U5 G, @0 \& N- Z- w; q
;;if [trade-record-one-len] of myself > 3

/ e( j4 w) s/ o9 M) X7 v' {3 iupdate-neighbor-total* c: d5 N6 f/ z0 n1 \7 v' }
;;
更新邻居节点的数目,在此进行7 T6 c6 ~, \) |  C
let i 3
* y2 o% T  A$ L& Wlet sum-time 0
4 I/ W. k# e5 m9 E: T! `$ b) swhile[i < [trade-record-one-len] of myself]
) y# r* v- Y* z. \0 e1 \[% B: _/ `' d( k: _  Q# ^8 ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ k& Q! Z8 D" A, d1 f# P! Tset i
. k3 P; W0 _. m% h1 }+ b( i + 1)
; ^; m1 W( V/ @) I! z
]5 w! [# r9 r. _! C, d
let j 3
$ T2 S9 \! S  W6 Y( f5 slet sum-money 0/ ]/ v" J' L( x% B, m
while[j < [trade-record-one-len] of myself]
( a/ Z+ y8 s- x! a0 a[
- ~" S: b2 ?; Q" S% B6 ?+ Uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. X) ~5 o& z/ o0 `set j2 A+ J' ^0 V7 Y* M& z
( j + 1)

) D, J! c# l* p$ |]/ l7 m# ]9 t3 K) [5 ^6 m
let k 3  V! E7 U8 L, t1 `. {! D4 r
let power 0
5 Y* m$ D; y/ ~. C# ?let local 0, S5 R9 ?: f  W1 R  l/ B
while [k <[trade-record-one-len] of myself]: w: O& b" x  C; u; g& E; u
[: z5 {2 a" A% L5 o  a4 @
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 M3 O7 @- H& `6 N% Y# m1 Zset k (k + 1)
6 d' q  y. d5 r) j- o! N]0 n* y- k& p2 K% p1 A$ i# y1 g, ?
set [local-reputation] of myself (local)- [& ]2 ~( Z) K1 M' a# {
end& I: ], x. @& g
7 {. P% v/ d1 e+ X' j2 j
to update-neighbor-total
) _9 E& I5 x4 R. q; q6 Q
; h+ s+ B2 A; h& E  p3 t9 mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: @: ]% E3 i/ f8 X, _
0 v8 U+ h* w. l7 N: I) o$ `

7 q, D: C& d: O( e7 {4 }) \! y0 q/ o9 Qend. n" |4 \! }2 R' ?

  a6 O+ `  `7 W2 sto update-credibility-ijl 8 {& ~7 I# v3 _- y4 Z

0 Q( z0 h6 J% P;;
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。
! W; y( y- M/ O0 `" w+ T9 |let l 0) ]" C+ M! H0 Y/ ~! x$ D- z, X# M
while[ l < people ]
9 F7 ?# b: n& w5 s+ K( J+ \5 O/ 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4 N& I% R2 b$ X; O% ~$ U# F
[& q( `) v  y  z5 j# H7 D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) q$ ?( Y9 ^. `0 a2 p
if (trade-record-one-j-l-len > 3)8 t: @. T% e  b- C% i
[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-one9 [; w& i3 z1 @5 V! m' Q$ k) m
let i 36 L/ r# T: R5 t% P/ |# l6 ]; d1 h
let sum-time 0
8 X% b7 r$ y8 ^! N+ _) ?% ]while[i < trade-record-one-len]7 S0 u/ G: l1 R/ r. s, \  g' Y
[
& M, }1 _$ v" [' L! w( Vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 m: I  g# b2 {- Xset i4 l( C! [1 N0 L9 F% m  c
( i + 1)

# `; V$ n( E1 A9 |]0 J# Y$ \: o1 A# H2 i
let credibility-i-j-l 09 w, `& s& h* l7 n4 ~: }& y
;;i
评价(jjl的评价)" v. ^; d7 ]4 }7 L4 {6 i
let j 3
3 X! }/ i7 Z* O. E: E$ C2 flet k 47 x( C( {$ i/ Y; `' `
while[j < trade-record-one-len]
8 t4 u& {! @2 w[: t# C( `" Z9 H  P9 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
% i0 s8 b5 E3 c' L; [5 p: Q( _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)  U. q) @. c) C, n: d- b/ i
set j
% b. B6 E* D& C1 y, P: e( j + 1)

9 p3 l% s" D  R]: P: ^$ f. \  r6 @: G8 G* q* T
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 ))
* v) H- x. J8 p3 ?$ w" q& ^& C; Q6 `4 J5 k' F

% S; F' l. K1 i( vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ c. R! k8 ~+ Q
;;
及时更新il的评价质量的评价2 m- l8 i7 ]8 g! `+ z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 Y+ M9 H& J/ `0 lset l (l + 1)) X, a' J: O+ H. n
]
$ ?0 x7 N+ G, V' ?end
2 @; h! J. B$ n& |5 Y+ q. c  y
0 H" ?0 {6 `" xto update-credibility-list# _$ O0 _2 T- g- t- H" R; M
let i 0& C9 _; x+ U1 _& l
while[i < people]2 f2 l; z$ X8 {# D8 e7 m- V
[3 G) t! \; `6 F/ j- p2 K5 n7 P3 j" i
let j 0" {1 v0 Q" b) ?* [; \! n
let note 0& n$ \' @" K3 s# K7 ~/ U5 E
let k 0
. W4 @: G; }/ l: K3 g; P' d;;
计作出过评价的邻居节点的数目* j5 R/ r& u, k; [# d; `- j
while[j < people]
- V4 @$ u5 p3 e8 R4 f9 i[
+ S- I5 D0 a4 m( a1 ?- Gif (item j( [credibility] of turtle (i + 1)) != -1)
$ [5 K7 H8 B' Q& p' K- i5 P;;
判断是否给本turtle的评价质量做出过评价的节点
3 B) ^+ j, [: r[set note (note + item j ([credibility]of turtle (i + 1)))2 S$ u! o" W; l. ]7 k
;;*(exp (-(people - 2)))/(people - 2))]
& }# \% {9 ^3 e0 B, e! c
set k (k + 1)
7 D4 x3 z; E) T' [* B. g2 `$ q]; Y8 W, x$ q- Z4 O. {& C
set j (j + 1)
1 V) f! E8 \0 K3 U. X3 K/ p]6 w+ C* D! e$ V  {/ G9 n& x7 Q
set note (note *(exp (- (1 / k)))/ k)- [& e5 D/ C' s$ m' l0 B  j
set credibility-list (replace-item i credibility-list note)
: x& U) R' S3 m, @) ^* X5 cset i (i + 1)! R7 }; M: p. b  {& a
]. E" ^( @6 N5 t8 d8 p- N
end
6 d" ^2 I) Y/ _" }8 O, r1 n
3 u9 s- P0 q# l) H7 g  ?to update-global-reputation-list
* c3 u; w; l! z0 \let j 0% I" Z2 t$ C8 s
while[j < people]* k& `. ?/ R7 R+ p: A2 l. j
[: D6 B8 M7 f, ?0 C2 o& X" o! o
let new 0, }( J  p& N4 C: H1 b$ q9 c
;;
暂存新的一个全局声誉
6 L- b2 C1 P, R6 t1 klet i 0- W4 q- z: c0 m  k, u) N* j
let sum-money 0
8 _) {) ~( L/ J9 ~, i1 klet credibility-money 0( N7 [/ O+ M: h) r- Y$ n+ l
while [i < people]5 q& X2 I+ c0 R9 T! e+ x
[2 D5 r) e/ ]1 D7 S0 V  H" s
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( G  P4 v0 S, ?! I, n/ X0 @
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! e$ x, B5 a+ W6 D1 `5 n6 q# Nset i (i + 1)
: g; ^; a4 a& D$ ?, T; B% a: j; g2 X) K]
" L& `8 n+ w1 x* slet k 0/ ^. o  N- K) {/ r; R5 J
let new1 06 u4 r' q. K  S; Y
while [k < people]
. f/ t* p) L0 B[
' g1 n; ~0 c4 ^3 c6 t8 N; fset 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)" `: ~+ F. s3 u; P- `7 M. T# c3 C1 J/ }2 X
set k (k + 1). o6 ~6 {7 _" ^  E- v1 p5 j
]
% h6 i1 d- e- M$ ?& ^; I& W( `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 Q' }" d/ n1 D
set global-reputation-list (replace-item j global-reputation-list new)
, o. d6 l0 R! Eset j (j + 1)0 N4 B( O% U- ^: d4 J
]6 s7 k* |6 n" e8 A- K
end
! H) i2 m5 W. s7 c4 \
% a6 ^/ Z4 a' D" |) _( k- S0 I+ `  C. _; [$ Y/ C9 Q+ |% @5 w' Q
9 A( S3 _! y% N
to get-color0 l; T" W9 I. I# J" F2 N& ^6 v
% C* D. Z2 U2 i; ~$ s* Y# M
set color blue

' x& Z3 G2 ^* Bend6 S& [, K8 F, k& R. T
+ w1 f0 c& r" J/ G: B: a5 d
to poll-class
. m9 j1 A% |' Y. U  l4 b* qend2 |: Y) q4 x( [# b' B3 v' z9 o' t0 `

, U! _1 ~8 F, V2 _3 Xto setup-plot1
. H  ?2 k" `( B' j! x
- J. \7 f* F5 K% Z6 aset-current-plot "Trends-of-Local-reputation"

2 W' Y3 Z8 T- U  A
" W, R! B8 v. T5 t0 wset-plot-x-range 0 xmax

+ L8 O% H: ^/ Z; ~5 B" U' }4 Q6 t8 a; ^5 @
set-plot-y-range 0.0 ymax
$ J3 R9 z* i' G4 j; \
end) r- Y1 C# \. L, Q; h9 g4 V
" o' J6 `' q4 d  z) E1 R
to setup-plot2
5 H9 H) C0 i+ c* _: i3 a! Z" P7 T; q2 P
set-current-plot "Trends-of-global-reputation"

$ p2 K1 \2 B& Q* p; W
6 k6 x% P7 r7 u$ n: D0 Tset-plot-x-range 0 xmax
% G& m) y1 Y' r; E- u( ~5 s( ^# L

3 Q+ D/ v- G5 `: F% P$ wset-plot-y-range 0.0 ymax
  @: F% B+ Q' r8 y) ~. z
end2 c2 I9 A  N* D
/ |: K4 o# K" L  o% H- f
to setup-plot3. }: b1 N& U; I7 i# X& M5 H
1 P* `. Z; q1 {" [6 l; ]
set-current-plot "Trends-of-credibility"
9 R# S. }/ g5 R; J/ M
# _' a: r9 t# }4 d& d: J" d/ \
set-plot-x-range 0 xmax
" S/ V: C8 Q1 c9 u/ W* q6 d

3 T5 Z  K3 q, j( y7 Zset-plot-y-range 0.0 ymax
* v! ^% [& Q3 n9 K- B
end5 ]0 X3 p, R; D5 e4 |

/ |, L: ~) c5 v9 u/ P5 }/ }to do-plots4 d& K, W& j$ Y5 q; E9 X) q
set-current-plot "Trends-of-Local-reputation". Q6 N; X6 X# n8 F4 t: I
set-current-plot-pen "Honest service"! w  ^* x0 K! ?* L6 J, ^, N
end# y( @- d$ `+ k! t1 X
4 z# ^! A# j" i9 W) \0 o% G  [: I
[ 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 w3 m! ], F4 H) G3 `7 E9 Z: `, Z$ r: S8 J0 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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