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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:
( S! a3 L8 R3 e) Eto do-business
- x! F) r3 [! L& r; l# M' P. t rt random 360
' ?2 z, L4 a! x fd 1* z! e& R$ g, _! P8 B% U* H5 T
ifelse(other turtles-here != nobody)[
, B7 e( s/ ]$ C' g9 o* a, S, g* g   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.& G; m2 H) e6 G: n: a3 T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 Q; Z7 B# d" [
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) l$ P. \2 E- e4 k, R6 F( ?& ]
   set [trade-record-one-len] of self length [trade-record-one] of self* r7 r( u2 k- A& }
   set trade-record-current( list (timer) (random money-upper-limit))
% L9 x, T, T  G* G# m3 n8 v  q; z4 ~. ]  D. Z1 N0 @
问题的提示如下:9 X# }, _. h1 H/ U

' S5 l7 D+ U4 ^+ d+ {; nerror while turtle 50 running OF in procedure DO-BUSINESS
* m9 ?9 @1 h+ B* |0 `  called by procedure GO
; a* T  a0 f' tOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 v" k" R" G1 K
(halted running of go)
& M' }$ E9 e- E% e* F+ Z/ s. D2 w- g- d
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~~' o# e$ x. G& @9 q
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' _' s* H4 e! x2 v! F1 v
globals[
$ f' K+ A! D9 H3 v& ^xmax0 U; Y! k# k# D5 z, T
ymax
( V2 b+ y( P3 V- m4 _3 {' Xglobal-reputation-list6 h0 Q7 \5 t. h- D2 b, \6 \- t) y

/ E3 M+ A8 y2 m;;
每一个turtle的全局声誉都存在此LIST
) ^1 Z% C, m( z6 l1 ~  zcredibility-list
# v  u+ d& S1 [$ R8 Y- o;;
每一个turtle的评价可信度
) f9 w2 u" _( r$ H8 l$ [& [3 }; khonest-service0 x/ {2 J/ B4 ]8 G
unhonest-service9 R) o. G: u, x- P
oscillation
+ H9 e! @# T& X' [# p: ~7 G% {rand-dynamic
$ U* G- G! D5 k4 ^$ }7 s- {]  |0 l& U/ T6 u* \
; I% Q) [9 }: z
turtles-own[
& |! C& I) h- ]3 ?- q, `" r' P( Q4 xtrade-record-all
; ~7 r0 E6 X' T& k' k# T. z;;a list of lists,
trade-record-one组成
9 k2 \% ]+ x3 `# Ftrade-record-one
. J0 [4 Q0 Z  D% T7 K4 s2 s! j6 r: d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( J& N' ~* ~5 A1 l
1 }" S9 k, W4 c* w;;[
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]]: x% t/ W/ t5 y8 Z& O) `
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]
: y* g4 H8 z) k; ecredibility-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
3 [; K2 J: |2 y+ e1 Mneighbor-total  R$ m2 q9 @" z4 K3 Z7 |
;;
记录该turtle的邻居节点的数目# E) K4 q9 N* N. S$ X
trade-time
7 E+ ?- P4 [: ?. N;;
当前发生交易的turtle的交易时间1 x8 w. H" w/ z! J8 Q
appraise-give
0 h# T- }5 ~, Q+ Y;;
当前发生交易时给出的评价
, }6 m7 x3 H* t' p' d& Z! t7 R. W3 jappraise-receive
2 _5 X" C9 \8 q* x0 n: c;;
当前发生交易时收到的评价
% v' U. s8 k8 O' d" nappraise-time
# {+ ^" G& Y6 T5 K5 {! w;;
当前发生交易时的评价时间$ i$ P: Q6 R0 R6 e/ N4 |6 y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( J7 {) E3 i( K9 p, u2 Qtrade-times-total2 \+ W$ l  d9 \; l6 W" w
;;
与当前turtle的交易总次数
/ i5 a0 u5 C6 V) U' Ptrade-money-total" v5 h- t( X7 C9 M( \3 _$ }) I
;;
与当前turtle的交易总金额- S; l/ I0 F+ o1 U# \# V: M- n
local-reputation0 H6 b' T& P$ \: f  m+ n: K
global-reputation
1 k8 F0 N( q! v9 f+ I6 m5 Kcredibility: {1 @" d% ?9 @' M# a( x& a. E
;;
评价可信度,每次交易后都需要更新0 y4 u( J0 S' }7 e/ a/ B
credibility-all
- B$ p* E/ d( [2 r;;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1 |4 v& {; Z5 H. W2 b

' F" v3 z/ C' h/ _; {1 u4 I. v;;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
3 n: Z% \9 V$ _: }9 q& t! \! ~credibility-one9 @0 K% W. u6 z3 C/ R5 L/ A
;;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! f# I- p, _; v8 `/ w* Q
global-proportion
  J3 E2 u* u* Icustomer
8 ?% m! N; f. H4 Z% _' E4 Lcustomer-no
) S. h; U- P3 }* {trust-ok
! z0 g3 J8 }/ T' u  m9 w/ @trade-record-one-len;;trade-record-one的长度; M6 ?3 l9 g( e6 J
]) m. p6 @9 c& m: p7 n; M+ K0 o
$ r9 y3 B& M8 D9 u" q5 |2 C. d' I
;;setup procedure
( b0 F8 B, m$ Q0 C0 A, p/ R' Q$ Y! T
to setup
0 `+ t# U$ c$ {4 _3 \  V
4 q- r5 e8 j2 s% J# ~" @5 oca
. u2 X' X7 Z6 E$ r
" h& ^+ B' d- H8 U" T: i
initialize-settings

! q2 c1 z* S1 o5 O. I) k4 Z' J
- G# x4 k8 k) f( r1 G3 \crt people [setup-turtles]

9 |5 P- ?) ?4 _5 z- c! r0 f* Q) g( C2 a2 |7 ?5 M, _' B' v
reset-timer
- @8 T) ?, L" W+ Y& h- A0 c3 j

; m5 Z; ~0 q; M# W) M' Y7 epoll-class
% m- H( s  \3 t" S2 L3 u" k" d
- e% |( B8 |$ M. J
setup-plots
' S7 P7 r: g0 Y5 Y7 g" a% g2 o

& |6 p0 B$ \+ S" d9 qdo-plots
3 L& ?* h! |0 {  Y( ]
end9 U% D( Y2 \: x. Z8 \0 y

2 C. w" H8 B5 m# l3 z9 ito initialize-settings
, b  Q$ t9 w: O
* A" W1 X9 Y5 aset global-reputation-list []

# r" H( J1 b) d7 H6 j3 }9 ^$ x
+ B6 E  \  b2 Y3 `set credibility-list n-values people [0.5]
' e: G2 o" @# O7 k5 w4 {
9 T& l8 I& L7 b
set honest-service 0

1 a3 g" u; y. `' _! x# z- \! D* z8 i. x2 l. e
set unhonest-service 0
- Y( ?+ P0 w3 B3 `1 u

( ~5 K( @7 x! `$ U. ]; I; C$ c. Iset oscillation 0
  F* M5 ?3 Y; w* @# f
/ W0 l* C3 s! n. a0 c/ |2 H+ |
set rand-dynamic 0

: B5 D7 j( N1 Yend# X  D& L6 j) R& P" j+ c
# g" D( j. q8 X4 G/ P
to setup-turtles ( I8 B  ~3 c  E
set shape "person"
3 Z+ H- N. L0 ?+ r9 z, Gsetxy random-xcor random-ycor
, @0 B9 @5 [6 ]4 Q) Vset trade-record-one []+ f6 q, Y3 [6 \- i; t2 n
! E2 {2 j# G$ m% q' D8 M# ^
set trade-record-all n-values people [(list (? + 1) 0 0)]
: s; C* u) {* H0 o$ U, i& [

3 c$ X5 q# L8 G" jset trade-record-current []
' w7 h& C) g5 y/ s) }set credibility-receive [], A  R: h( B, ^# H; M  r$ I6 k
set local-reputation 0.5
: e& X3 B! }0 k' }! eset neighbor-total 0
; T" V5 U  o- u3 p5 N4 vset trade-times-total 0
5 n( f. P" N+ a: h) R9 ^' fset trade-money-total 09 f" d+ K( U: l: T+ N# s4 u1 E
set customer nobody
# f: N7 O) D" L* ?9 dset credibility-all n-values people [creat-credibility]
9 @2 ^+ H' i: G% q  q+ I9 \set credibility n-values people [-1]$ f6 S( T. L( Y4 i1 S7 v- l
get-color
7 r, K# y  a$ |9 u/ X9 c  V" e

1 M7 Q1 p7 x- V3 l" |end2 _: m% j, U" |
, F/ E. K7 n0 u6 S: @
to-report creat-credibility/ Q+ _$ B/ _! @
report n-values people [0.5]
, }- |0 }8 {2 _/ Jend- W7 ]3 e' ]2 Y) J, \

) ~2 [: i! `2 ?2 @: n- nto setup-plots% T$ G+ f9 g* W7 U8 I7 i

; M1 d8 B2 T) e) q- N" |set xmax 30
  E1 E) t8 N, u* I

$ X; c' P5 @8 fset ymax 1.0
  I; y  J# h0 r
* k+ R& H9 A3 ]) g2 F
clear-all-plots
$ m/ g, b$ I% O) V- B$ h5 N

) a' R. X- N6 U$ g6 Fsetup-plot1

" f1 Y3 b6 c& X- \6 X. ^. O  B$ C! n+ L3 r0 E5 Z
setup-plot2
. G7 h1 O! w( j% p7 f2 V7 z

0 z' B" A7 l/ q* q, }7 x2 |setup-plot3
" X. e3 K8 G7 w" ~6 V. N8 Z
end
: W' S2 K# @" I) {7 h$ m/ ~2 \0 E% t- H7 Z4 e( K- o& u* A
;;run time procedures
' q: e2 Y" ?4 w, m7 \6 N+ I+ K
7 q6 R& e: \' }- E# a- Xto go/ G- `  q% L2 E0 G: i9 R/ M0 h
* b# i% ]& a/ \! P- o0 g, F% g
ask turtles [do-business]

% V4 }6 [9 v! k, t+ uend
* K- d* \& d# r1 ]# T1 @  Y3 M3 @
3 q. P+ h4 o9 o4 w2 P$ Zto do-business 0 ?/ y4 _/ H1 E2 L/ \# i) J3 K

6 B! _- g, ?1 n. M% N, a. l/ ]1 F4 Q3 U& C& m4 O$ m& _9 e
rt random 360
/ d* Z1 E3 L4 g' k

; z3 W3 T& Q; a9 s+ {fd 1

3 Z+ Y; h- G/ \
$ E* _; H0 ^+ E6 c! qifelse(other turtles-here != nobody)[
0 P- z7 H2 \& E) e/ s/ h

" c  e; k7 m7 x1 _; iset customer one-of other turtles-here
2 e. l" q# e. x3 _* p

* h+ M, ?  b$ e) R7 b' S" x- v& k& Y;; set [customer] of customer myself

* R6 U  G/ N; w& S/ ~6 F* c& R2 H) E, l/ X( \) z
set [trade-record-one] of self item (([who] of customer) - 1)
: T1 d" I* [7 F" a[trade-record-all]of self
% ^; U0 S/ }9 m) i. g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ R- |: k1 i: q* ]+ j

( a5 W$ [3 T+ C, o- [7 n# F. U, Nset [trade-record-one] of customer item (([who] of self) - 1)& r$ [  H+ r% V7 h
[trade-record-all]of customer
- o: d+ d2 }# b' Z
/ Z# l7 f. S2 z2 g+ e8 z% y
set [trade-record-one-len] of self length [trade-record-one] of self
( Q3 A% }- |  w2 g. f
) y$ k) M" w+ ]6 q3 O& R
set trade-record-current( list (timer) (random money-upper-limit))

& c+ V1 Y8 l8 e& R" s. m9 J' A3 q3 ^) R( [/ _# n
ask self [do-trust]+ m) r# A' p! I  Y
;;
先求ij的信任度) m5 {/ `  M. B1 Z6 J* ?6 f
7 b  ^8 r" k; P) D7 L
if ([trust-ok] of self)
) I* n) C! \* O;;
根据ij的信任度来决定是否与j进行交易[' j0 }' }5 D/ {! U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ U' n6 \' N1 ?) k' C2 F/ Y4 Q+ A% ?$ N4 c' h& U! [( J+ t3 i9 L
[

6 y: G' d  p8 u$ Q
" a* ]1 u! n" `+ ~do-trade
" B2 m, N) e3 Q- X: y0 Y

# j3 m* L9 o, Y- h. q1 s; `8 f, P& iupdate-credibility-ijl

3 Q! O) T# l( c/ O6 Y8 t
8 \9 ]+ e% a- C3 b- v$ b* ]% O' N+ {update-credibility-list
9 x; d# g: r2 T4 G
( ~& V9 Q) u) u! c; N( {
% E1 o- L' l" f/ O* W9 }& u" e
update-global-reputation-list

6 u0 h4 W+ M  y. ~& p2 v6 H. G& O
poll-class
8 f$ a7 O) i% T: H- g! N3 ~
( k" C% ~+ s  w" q5 Z$ \3 i
get-color

  ]+ r/ [+ L2 y+ p- \/ C% |0 p
: D% E5 }! ~) Q/ m. b* T]]# z1 M" H8 f( f6 d# m( Y
9 d3 ?" y( m% `5 `3 j- q
;;
如果所得的信任度满足条件,则进行交易, W* O$ v9 e+ s. `! I

3 L' @/ v0 R1 H[
- w+ `) C# ^5 g. `

/ y$ m2 T" j: G# ]) Trt random 360
" N2 ?$ W7 e# k3 l2 d1 T) V; W
" A( Q! [# i# F) ~6 i0 d& b
fd 1
7 `4 S- X8 ~$ M1 m" _0 t  i
: z/ w0 @9 Z4 N( B, F
]
9 L$ o! ]8 w4 K- p+ \

' L/ c: N7 d. n' R! d7 Lend
% {2 P& I1 O  ?, B- m7 E5 I8 b
+ g- T% m. }; N
to do-trust + l" g$ n; P% l; y; E3 c& u: S
set trust-ok False
+ e- V! c0 ?; X2 `# u; K+ S" F
0 X9 i! P* B/ x

7 G# Q  S3 X' }8 ~" Nlet max-trade-times 0: p' M& u$ _) }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- b7 L/ a& y& y7 Alet max-trade-money 0$ k4 y! i9 L9 V: l4 }7 g  A0 e' S+ a
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. f0 r+ B+ D! X# }1 ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" m5 v; d8 B8 U+ m3 u) a5 V5 c; X2 A# [9 t7 O8 q) F& @1 a+ Q
/ I  h. Z7 k% `- K$ W2 M. _% x$ |
get-global-proportion
- S) I5 q( C5 O  m# I8 qlet trust-value. d% \. m6 J, S" P! d2 O
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)
$ A# R* ~& _0 b% x" {% `3 V
if(trust-value > trade-trust-value)
* N! m- J7 f" z0 [* ?7 }6 s[set trust-ok true]
  _" q( s( J) r  K& rend
5 B& U+ E+ V! s0 n; v5 }1 V
  V( S# {/ n9 f9 o7 O! u0 rto get-global-proportion* p9 }5 `; [( z0 W0 _- M! z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 K( C2 M2 `; `! G' J[set global-proportion 0]! q- B6 ~/ Q) K6 _3 K% j. E* ]7 c
[let i 0
( k6 a$ X6 V" W1 b+ z6 l/ `let sum-money 0
( P5 \; v1 f5 @0 v7 W; ^" pwhile[ i < people]& \* A# l- d6 Q2 k. X3 z
[
& `% [# q# F5 d1 O: Q7 pif( length (item i
# Q' J6 B# `8 m& K3 {$ j- d- ?. ?. n[trade-record-all] of customer) > 3 )

1 X: g- Z# C' {1 o# q9 Z[
6 U* M! N. \* Q4 w- ]: \# wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 q! `7 q  H% J9 t) a]
# N+ E- }# o; g& q1 I1 f% y! H( i]
( U9 G, D" r3 @let j 0
" Q6 z* _3 J+ q' g; }; Flet note 0& a+ X% Y3 X- O3 a4 D
while[ j < people]
5 n& B' \, ~+ k) G' U7 D/ z[
+ _5 i& }. {, }5 ?5 j& Sif( length (item i
1 Q9 v/ f, |' X4 F[trade-record-all] of customer) > 3 )
9 N1 p$ l* E( v
[
1 y/ [" }5 B0 O0 v# G) x+ Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! r0 K: l) ^. r! F3 b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) W3 i# o# a2 w% F" _  N8 j0 T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; n% R" e, }: ^6 S! ^1 Y0 p# _! B]
" J! Q$ s2 y* N; ?! j$ ^2 ^]7 \# n/ L2 {/ w& V+ f$ ]. c
set global-proportion note# Q# y8 {8 C8 f( C2 V6 x
]
* ?# M1 C" e% r/ U1 u- Wend) H! |+ ^, h+ D$ x

% ]. H. S+ m6 U" c$ `4 k$ r# K4 c, `to do-trade. N/ j( _- E1 H
;;
这个过程实际上是给双方作出评价的过程
9 v5 G1 Z) i5 H0 p3 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ P' W5 F  q. |9 n+ F/ H- E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. W( h6 f2 w8 A" x% U& L4 h% g$ tset trade-record-current lput(timer) trade-record-current6 u, D1 b* x4 j
;;
评价时间7 ^$ S& l6 E- G
ask myself [" s8 _9 _8 z6 f8 J. ~- {
update-local-reputation
, c# v0 C  d7 h2 rset trade-record-current lput([local-reputation] of myself) trade-record-current
  V4 I7 w+ L3 Y& ~1 f% g2 A* b]3 E1 _, X/ i' f0 S1 l+ Q; F: G# |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  \6 f# O* j- {;;
将此次交易的记录加入到trade-record-one
0 I8 X+ e: g. R1 o6 T$ Y; ~set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ s. r8 {! n3 q' a3 u; L
let note (item 2 trade-record-current )
& Z8 P/ D  E& _& o3 iset trade-record-current
2 T/ z) P* {8 A, `' @9 ^  p/ \(replace-item 2 trade-record-current (item 3 trade-record-current))
9 K+ J$ N% Y: }6 `* X( e5 L& h- J
set trade-record-current0 c- w6 C6 l2 u2 _
(replace-item 3 trade-record-current note)& N1 S/ _4 F& Y4 Y8 Q, G

) J) M5 u" M) A( Q
% X; t, D" k6 x! p2 |/ n) F
ask customer [6 h3 q8 a. N) j+ `, e
update-local-reputation
5 d- r( Z% b! X' _set trade-record-current5 M3 Z# G9 y- j+ c# B* {5 L. `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# c8 F. L7 G) o* d( Q
]
- d- r! W! O8 a# c8 s2 i  S" s% r* ]

8 j9 h* [  O0 r. Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ i4 v+ Q% w2 c+ B1 H
7 Y7 {) K- A' @- M$ n! u" l9 Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) q8 c$ p% \/ P0 o* U
;;
将此次交易的记录加入到customertrade-record-all
- b6 O' m* p3 V9 N' rend' ]8 a& G4 e2 |# v6 U' }$ O$ \7 p

. D% H  G- y% K+ Y( o4 L; N, fto update-local-reputation. U8 Y& \% T, e+ q
set [trade-record-one-len] of myself length [trade-record-one] of myself+ g% {1 f; J3 E" b4 p$ ]( X

: o8 i9 O7 p& ]: A! R  A: f" `/ W
2 B; Z$ x8 z9 Y$ S6 ?  O; w;;if [trade-record-one-len] of myself > 3

  G5 Z+ `: X  i; n: oupdate-neighbor-total
2 V! o1 b7 F5 d% s0 j;;
更新邻居节点的数目,在此进行5 h! a" [' P2 B  t6 V  G# g, u$ P
let i 3
+ e+ Y# D/ h# t+ p4 \let sum-time 0! u9 w% O9 F1 `" p( o/ @
while[i < [trade-record-one-len] of myself]
$ N; D* d+ W% U. \1 E& [1 |[& }5 h& N5 U1 W5 h
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); ]# E! |- Q! K
set i
, e" V$ b& z8 w# B% i( i + 1)

( Z1 i0 N& |5 X9 T' E]
4 o1 e1 g* {+ L9 I5 Tlet j 3
- S2 @" e0 D% i4 Zlet sum-money 0
5 w& c) p  f; G- C7 ]+ `/ Bwhile[j < [trade-record-one-len] of myself]+ E6 l; T$ S* \( I" H/ J
[
% B$ Z9 p5 w4 c) J2 n  x( _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)& T6 H: s$ e. ]# }  ~) f' S( t
set j8 s" K$ @( v# g
( j + 1)
6 X5 {* d  F. A
]
* k+ U" m  L2 u9 j  b" Slet k 3
5 ~& Q% D" M- v; [; Glet power 0. v5 Y. `: E( C7 J3 Q
let local 05 n! K8 P4 x+ x0 k; p! m
while [k <[trade-record-one-len] of myself]
* n$ o1 d8 ^' ~6 V[! S) s: a, x- T8 f; {/ i: b' R! \
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) 0 g1 e) F; `2 t
set k (k + 1)8 L( e/ F0 i2 `0 C. F2 F3 \# j) L
]/ y" U. @2 `! e+ S
set [local-reputation] of myself (local)
2 v+ \( K  j6 vend
+ N, k0 c3 A: c1 `4 v( _- P' t' z- u: z: ?2 E0 H" H
to update-neighbor-total
. @; G, j8 @/ [: @/ x7 N8 n
! q$ i: h/ r+ T8 P; ]: {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ Q( f( C4 _) y
7 J, r7 u: S8 o& c' H1 t) H
  B0 Q& e: |5 n# V+ x
end
/ V2 b1 i  l! [& e" U) A1 U0 K2 G: T1 N2 d- q$ i/ K5 b# ^7 _  M. S
to update-credibility-ijl ( r% M7 k1 N! \7 f  y3 v1 [9 v

* |5 ?+ {$ w) ~  ?8 ~6 q;;
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。1 X% Y6 C9 H; g  Q8 L
let l 01 l* d7 U$ P1 Z
while[ l < people ]
$ x4 f  ]4 z' o& w1 w+ t;;
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
- z* A5 t  M+ n[) H* w- \. h2 p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  Q& X4 b  l4 A& i/ I
if (trade-record-one-j-l-len > 3)
5 C. H9 D1 e" n[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 Y% X% z2 V' w
let i 3
: c/ m& j7 w; f$ m) Clet sum-time 0
- _7 {/ K6 j* o  M' V* G+ Fwhile[i < trade-record-one-len]
7 T( s* ?4 Q4 N7 ^[
& G( y8 H& \2 g1 V$ ~1 I- lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* Z3 @( w. y# H
set i
9 q9 [2 `* h* U* g5 `5 {1 U( i + 1)

2 Q) g' x9 x) k: y2 ?5 p" w]6 ]  H- T4 Z% o# L) M! g
let credibility-i-j-l 0) a% R  R* c2 }- B1 t9 e+ e' C
;;i
评价(jjl的评价)2 G+ X6 w- I5 C2 z
let j 30 ~& A! l8 L4 z8 |  G* D
let k 45 i* G$ C  X  m3 E) R
while[j < trade-record-one-len]5 S0 l( s# h! g( r  w! K  s; F$ _' E
[9 _) A" y( d( q; S/ g
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" e6 {4 ~1 u1 ~- ^
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)+ E0 e+ \8 f" B! H/ g5 Q; V
set j( F9 n# Y, M$ p. h1 {1 @
( j + 1)

* k% S" y; ]0 G- t* r]
. c! Y* {5 I6 m* H* f( j1 uset [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 ))2 T+ T: F: ^* H6 m0 x
' @7 t* e5 v4 f

7 d$ |9 [" l. a  b# \4 |let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; t) d% L7 ~. i9 Q;;
及时更新il的评价质量的评价& _; D/ A9 u% _. q9 \' Y- i& l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" V* D, L0 c6 }2 y
set l (l + 1)8 {) z5 P6 q9 m9 `
]
1 s7 z6 v/ y% J4 R2 D: k5 Wend* L5 c6 q4 W1 ?! I; R
! g  d" T% \+ s: S+ R1 G$ g8 Y7 s
to update-credibility-list
% V! X- V4 Y! B5 D( alet i 0
1 X5 Z- n7 {: p9 K# z! Gwhile[i < people]: }: c9 _7 Y, @, ~  B9 }
[  q) }3 u+ @# O; i7 C/ E
let j 0
: K" _- j2 r( u! `. C$ T( B! vlet note 0
0 z6 t* K$ B3 i! z5 V1 v! \& @& Glet k 0
. ], E! K/ y( ]4 |7 l. G6 N;;
计作出过评价的邻居节点的数目
+ z- O) y  ^. i7 r% nwhile[j < people]. Z) u. E# c4 L; ]3 q, U
[
: R9 `( V. o- Bif (item j( [credibility] of turtle (i + 1)) != -1)* ?* D) q) h# Y3 O' F
;;
判断是否给本turtle的评价质量做出过评价的节点
3 c) O" B/ c# E& L, u[set note (note + item j ([credibility]of turtle (i + 1)))- _7 ?  `& m. C8 H
;;*(exp (-(people - 2)))/(people - 2))]

% D# c% W6 E3 Q+ u- Q2 fset k (k + 1)) }! _. X! V; q& m3 c* ?- Y
]
5 ~; A. D6 E8 {# v' n: ]  `+ Hset j (j + 1)
4 Q0 g1 r% v' v7 f" \) e]
1 I2 Z' W6 d" f. `# Gset note (note *(exp (- (1 / k)))/ k)
$ t# c9 r# l- E4 a* m3 Pset credibility-list (replace-item i credibility-list note)
6 z+ f" h) ^" B7 T) H/ qset i (i + 1)% b# R; `4 |# ?0 L  s% J
]7 d, \. G: W8 Y% V
end9 l7 Y$ V. |' y% K) Z3 w

) J& O2 \. y$ ?9 P  Xto update-global-reputation-list" O1 S3 f( E+ I# _
let j 03 C! m1 Q! o4 U3 h4 f
while[j < people]
4 O1 e) {' K" P9 I[
6 J! C7 w3 a7 Dlet new 06 o1 u, X) ]/ a+ V: i
;;
暂存新的一个全局声誉
( W# r( K# T2 ^7 B5 i' ]let i 0
, S6 @: Q" }+ {. I' Blet sum-money 02 V( o3 y" [. m1 \
let credibility-money 0
4 U. a; m2 W! W# w; Z- @1 Ewhile [i < people]
! p. I$ T! p5 y5 K# ]% r/ S7 J' U[- j! i) N' T, b" T" J% B2 p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 D% b6 a! O  a+ }; B; H) p" g( bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 q+ b# R" F0 Iset i (i + 1); ]0 y' M; ^* I# F% t) Z4 K* I
]
- Y' V& h: f# E" a, ^6 M- p: A& ]( ulet k 0
, }6 }* M6 Y1 Nlet new1 0
9 R$ v) W$ I) i( T% `) c  Z1 swhile [k < people]' ~  _+ |/ b: J4 T% m& W  G/ K' P
[
2 V: p. E7 g3 C0 l- f4 i8 e( Kset 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)7 Q( s* }- h8 @* }0 r, H# u7 `
set k (k + 1)
/ ^6 q1 r. z8 v6 E]# O* Q- s0 k$ l: T) K0 O. L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   {: m' C( g: ]& o4 y4 ^
set global-reputation-list (replace-item j global-reputation-list new)/ x1 k0 `3 X) A, w$ \
set j (j + 1)  g& r8 P$ L5 o% b
]
+ k) U0 l+ a& O- z. i' Pend  P( j' K/ F) F+ x

7 y. E$ ^- _) E# _5 J2 ]8 [$ |2 C& Y- O/ D" ^. o
5 I! @6 F2 o% K4 ?+ E0 H
to get-color
+ R" ^. o0 c% @( ~0 l8 u* [6 _( G2 q0 p+ l% g- B3 [. `4 X
set color blue
9 Z% z/ ]; s- q; Y+ E$ w
end7 R- K- \$ [9 d3 G" L
& e( j2 W" ?( E& h
to poll-class' v2 ]% H5 w! `2 L; N+ N8 |
end8 u6 ~- a5 z) u7 @/ f) B

, a5 @) B; z8 b3 P; M/ Z2 B! O+ Oto setup-plot1
2 b+ `. N$ Z3 ]' ?- l- d& |' u0 v: c" H* c2 `2 }
set-current-plot "Trends-of-Local-reputation"
& D. O6 Z9 H1 j  }% `

7 B/ ~8 I1 C- g+ rset-plot-x-range 0 xmax

$ o6 l) z. W$ w4 f2 B( m1 s/ i6 z# }; K  X6 M
set-plot-y-range 0.0 ymax
( P9 \) b' K2 }. s3 p" P
end
$ \$ Z9 _4 P6 V4 Q8 U& U4 j  S1 y, @5 @
to setup-plot2
  `1 u3 a  X$ n( _# W& z4 |
6 `1 |4 \8 X  V3 rset-current-plot "Trends-of-global-reputation"

, Z) d! p% n% c( h
, y- N1 y' p6 J  Q) ~  Nset-plot-x-range 0 xmax

2 M$ h& |( O/ y* \# r! q+ h  }1 \+ M) J, D
set-plot-y-range 0.0 ymax

* M- c8 ~' p# Z3 @% Y, }- Y2 Cend
$ O6 ~/ C2 c- B7 Q: N( j& Q- W: ?2 n8 \5 [! L+ O: q
to setup-plot3
% c1 k7 Z: J' n& ^1 x# a: i
% S5 L( A5 P$ y4 a4 cset-current-plot "Trends-of-credibility"

3 I' Z* `5 v/ \2 R2 J# y3 j( F  A& E, d3 Q
set-plot-x-range 0 xmax
; ^# l" S- \% h- M- H4 X

* s$ R/ T. W9 z" fset-plot-y-range 0.0 ymax

; @. c) O' L6 s/ ~$ gend
: Z9 A+ i/ }5 k# w7 g5 T+ Y+ N; L: e! x( J' B$ O4 R
to do-plots% ^( o9 a/ m. P4 I; {" i
set-current-plot "Trends-of-Local-reputation"
9 r  r1 @$ ^3 ]- h6 i- zset-current-plot-pen "Honest service"
5 @) I. O$ B: Zend
  D1 }0 S; y+ V2 f6 W. }) B6 ?  [$ ^" p% ]8 K% Q0 \
[ 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.
" r4 S3 |; M  j# B( Z  F+ P/ t% |4 G6 r' V9 j
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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