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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:
+ v. B3 C; @6 vto do-business
% J6 }5 S% A* b/ M, q! V! i rt random 3609 T* Z3 _0 Y" \5 ~6 [  i3 u
fd 1
$ i8 O! T( X7 q! |* E# U ifelse(other turtles-here != nobody)[1 S8 K, o. v# ?( t9 g- @: P3 ]
   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.$ H8 k% ]' w6 q; h3 v3 o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : n+ i0 {! @& ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ E% m$ V: S  H2 v* h& Z) K   set [trade-record-one-len] of self length [trade-record-one] of self
9 j- b; L% L& j% X8 ^* W9 j; q   set trade-record-current( list (timer) (random money-upper-limit))
7 F, u% O. n5 T- F
. C7 {' W% _: h) `- b7 N$ i4 c问题的提示如下:- t, Q  Q9 f6 t" \( ]' N

* |) A: \) P% `# [6 G  r% Werror while turtle 50 running OF in procedure DO-BUSINESS9 Y8 a4 P+ O& R, D( y( ?% K0 C. z
  called by procedure GO6 {& h2 P0 @. [) X7 |, ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% D# @' Q+ W5 y; q0 A4 e0 w2 {- }# l4 \
(halted running of go)5 _  Z4 N! i! a3 y. q' u, S5 T/ b

9 V6 f; W! ^0 o: L6 ~! B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~~. H6 \) w# t% x  n- |8 f% X
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
. D8 z( M  {2 y( }* X- V- hglobals[
, W8 ^3 Z2 W# X0 kxmax
+ Q! s+ R" i7 I/ Rymax
: c# |2 G. y* f3 y/ f$ t5 c+ Uglobal-reputation-list/ [! s+ @! c, x  i3 ]
) _* N. Y7 q3 B' l7 k) O. J
;;
每一个turtle的全局声誉都存在此LIST
$ `. d* M2 _- Z! ucredibility-list* ]2 C$ k6 c& O: d
;;
每一个turtle的评价可信度5 x: n+ `/ o8 Y2 Q
honest-service
9 Q4 I" d3 Y% Y2 s/ u' eunhonest-service- i/ z& r. K9 _5 ?- l
oscillation
' i1 p( P. T$ x3 k- Srand-dynamic
3 E) R7 [$ z/ [% ]; }! [7 H- |]& X' ~3 n  d) x0 ~7 i( ]# ~8 A8 }
: J, K; A" E2 D) w+ c
turtles-own[: g9 n% ?- O6 x% A. h$ x
trade-record-all5 N: s' g2 V7 O# h0 V' X9 W: ~5 M
;;a list of lists,
trade-record-one组成6 u( I  F1 H6 ?# v+ v7 N4 d( \$ j, ~
trade-record-one4 l" X5 y4 L7 V! C% P( L' R, T9 y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& b. E8 y: h' Q) X- n5 n/ K5 x
( I3 [+ [1 j3 u7 V
;;[
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]]$ Q; O# z/ X; }& A) u' 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]
/ p3 f7 {2 r  ]. |: Rcredibility-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
1 U4 S7 k/ z. v( K3 O7 yneighbor-total0 x: @  _) T, s
;;
记录该turtle的邻居节点的数目
8 u7 m0 Z& {0 w' }; V& q8 B1 Htrade-time5 m9 v  G. z* C+ v! B5 D" l) C
;;
当前发生交易的turtle的交易时间
9 k) [( d3 x8 f9 P; W# }appraise-give
( A$ c7 r* n4 f;;
当前发生交易时给出的评价
7 b* U! A) g4 \# e- w& C, Gappraise-receive
- d3 E" X' d4 C7 F8 O) ~& k1 U3 g# n;;
当前发生交易时收到的评价
% l; C4 e. J+ d' S2 \9 e2 a' m7 vappraise-time1 m. @- ~: S# W* Q2 `+ C
;;
当前发生交易时的评价时间
  `  H, ?; G( `& xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 f% S" ]7 i( j: j& o0 J# I( W
trade-times-total
# f, e: w, G- n;;
与当前turtle的交易总次数
4 v$ N( `9 ~1 ~trade-money-total
9 A1 r4 T/ _( X" ?3 E5 K' q6 y;;
与当前turtle的交易总金额" o# e2 x6 j4 [, a# J8 x) w0 }
local-reputation
: B5 N8 J, A) b0 k8 X. Q! {global-reputation
  Y# ~# f5 x- x( k" c6 ~: ^% B! hcredibility1 P  ~* n+ A* v: Z1 @- a
;;
评价可信度,每次交易后都需要更新
, {, T# {3 e6 `: v) }6 }credibility-all1 @, w6 y  q. {' ?5 J
;;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7 Z/ z: b6 |2 G& S
, d9 \$ C( O- z; g
;;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
" m: \+ k% A3 v. f6 m+ J) O; acredibility-one
2 C: [8 w6 U. W% b) g9 G% [: h;;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
4 l) l! Y& m$ T. S7 A* |global-proportion
; k. d1 [5 r& K9 R+ G! v7 zcustomer$ n% a/ V1 M( W3 ]2 G  E2 Z0 ~0 U) C
customer-no
% _3 ^1 V; g% R5 [8 }- ptrust-ok  T- l+ h: r! P* s4 d% e
trade-record-one-len;;trade-record-one的长度+ Q' I6 h+ r" E. a# E& F! R' T" @
]
, r" q6 ^# k7 B* X7 Q8 ]8 L
' A. t5 E' J0 U;;setup procedure( p* D" J9 y4 [/ t

( |+ n' U( Z( wto setup/ m4 G0 I- a' Y2 ]: f

9 _; D' b1 r! O3 Aca

; c" `% b+ U8 F9 @' ~: F# M" G( T  |9 r* F% D- B6 M9 v
initialize-settings
; ]! g2 R2 s/ L- O. G7 @8 c

. U6 B& C8 b% j/ H/ g2 Scrt people [setup-turtles]
" p4 A. f& w" @0 _" a5 O$ w
& c  B9 Y4 s. F5 v
reset-timer

% y3 S+ b8 G/ p1 w: S3 x" k3 T1 H7 g; D* Y; k- I8 e) L
poll-class

+ q% ~( Q) w! |" p/ y( Z. c  m8 o' M  A, \9 F* l
setup-plots
. k! _9 Y, W6 Q
2 S9 }0 i+ K1 _" e5 H2 W* k
do-plots
. Z0 J! E( f) D# T  c" O. N% _
end* [* A' ^; e, T
0 [% S+ m# N% E( Z$ d4 X
to initialize-settings0 z, l) e4 h1 {, z. Q: E
. j& ^/ g- v( r+ z& f9 e! h
set global-reputation-list []
3 |* Q3 U6 l- ?! ^3 f" U% G

- c3 B0 q7 |- p8 uset credibility-list n-values people [0.5]
8 M- _, ?- c, F2 @7 b$ E
$ _: Z5 r1 c8 z7 c* [, k# |, e( r
set honest-service 0

- I- U# o2 m$ y( n7 |( n. F6 e+ ^2 [( g1 _$ D, @
set unhonest-service 0
& ^& s7 O% b3 O: L
( a8 y2 A4 p- W0 V5 K5 h
set oscillation 0

- {: G1 i2 ~- P2 d( x# m" q3 C6 ?/ K! Q
set rand-dynamic 0
! L' {6 A) Y5 y. c; ~4 R
end
0 r0 c8 W- V2 O3 y8 x. ~. f' j& G2 I% H3 D/ _
to setup-turtles , u# y* `6 k) R- F
set shape "person"
9 N$ G  |$ ^: m6 @  ^" ?setxy random-xcor random-ycor! B$ i* U. L  Z1 w* ^4 l' l: y
set trade-record-one []) ~% I; A. L2 f8 e3 b% m3 O( n
0 D% R' C( e! ?  \- a* x
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 {6 U( \6 e1 T2 z. I6 `

; X% h0 z& E3 I$ jset trade-record-current []: [- \4 o( L$ @
set credibility-receive []
# Y) \; d4 F. vset local-reputation 0.5: f! B4 b, V/ G8 k$ I# j# K
set neighbor-total 07 o/ `' |) l' c3 x& ~
set trade-times-total 09 h* V$ ^: v9 z# Z
set trade-money-total 0/ C/ Z7 y" N2 d" j# z6 G, D( r* J
set customer nobody; I/ M! R" a+ W9 X* Y/ V
set credibility-all n-values people [creat-credibility]
" Q- u" S% ]# V  R+ z6 }, fset credibility n-values people [-1]% C9 T- A7 u  V% f, d2 h
get-color/ n4 s& r5 P0 n! `8 g5 M

8 x) f1 R4 q! ~* o7 v3 ?end5 j9 y1 E: f/ f+ V  r, r
2 W! M3 F% l" P" w1 `6 a+ l
to-report creat-credibility
1 i1 U% O+ W# U' O! }0 O9 r3 z8 jreport n-values people [0.5]
  m) i9 x9 V# M% _, f$ x" Jend
. e4 @5 h# \+ j7 V
2 ~4 R( y" p% T) p% E( Lto setup-plots
" M( M* {  d! e+ Z
9 c% O/ G+ Q1 o. O) |5 A: I; q) fset xmax 30
" ?- ?; G. ?9 i

2 I2 g  S& f$ x4 R* ^& a* `; qset ymax 1.0

. T# N9 ^4 R" |5 W/ C9 ^0 @; T, V2 [. {/ e
clear-all-plots

* v+ H" s* c+ r0 B( ]
+ s5 w* x2 d: d1 ?3 t; {9 lsetup-plot1
2 S" L" p7 k! f) X  o
$ O( ~  y& g( I, d- \
setup-plot2

; \# M! f4 v( J6 `% L
; E  i" ^0 h1 u5 ~' B! Bsetup-plot3

9 [! j! r$ R' _, v8 ]: R. \end
' \3 Q3 {9 k* \  m5 C% P% A0 Q, M. V; v7 O
;;run time procedures' F7 ]) i% `- n4 l/ ~3 h
% u0 k$ K; N: e) }3 ^% w$ N( h
to go
, U  U5 \0 B( h7 d# x9 v& _' `4 g( j6 D" Q% ]5 v
ask turtles [do-business]
9 X- ^: j6 K% ^+ S
end
: i$ R+ t5 f  e) R  H) C& t+ e* W6 a: M: o3 a$ w
to do-business / M5 ?1 m+ n, i5 }6 x# m
$ m  X+ h' ]: G) m& N5 {1 S5 e

' \+ {7 D. N. m, [rt random 360

% z+ d& z+ w+ j& p
& X3 z: {- X' cfd 1

- ?! S5 f  w5 w, w/ b
+ a5 P* ~" j0 wifelse(other turtles-here != nobody)[

/ B) R' _8 y/ O# g- `2 E
8 z, B. ^+ c4 G6 aset customer one-of other turtles-here
5 V. ]$ j. Q8 X% K8 M
7 J, f  g3 z: ~+ T
;; set [customer] of customer myself

8 y! [+ O0 R* Y& n# t' W
* C2 o+ Y" U; x6 h4 yset [trade-record-one] of self item (([who] of customer) - 1)" p6 ^1 s2 h1 z/ R0 g
[trade-record-all]of self- L2 U9 }% h; C  a! Y$ l8 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 k8 ]& |2 S5 t" H3 x$ k9 _6 I0 H, b. ^. {
set [trade-record-one] of customer item (([who] of self) - 1)
- o3 o. F" B+ K3 e0 y0 _: \7 ^[trade-record-all]of customer

2 k/ ?( X% |8 }% j( a% A' N* t; a# q* y$ f* [: t) I6 f% {/ \
set [trade-record-one-len] of self length [trade-record-one] of self

: S1 V0 a" F+ q! m/ x! Z2 f! M( _1 C
set trade-record-current( list (timer) (random money-upper-limit))

2 h5 Z1 d/ R) a& r8 d! I4 @7 ?/ G: V, C# y5 p1 _* J% F( I! K
ask self [do-trust]) T0 x: P) w6 {/ d5 z5 j0 {4 p: r
;;
先求ij的信任度2 B; p! q" c: h" q% |9 b# @
/ q! g& ], `) v4 R
if ([trust-ok] of self); b4 s  N: `2 I# h$ x: R
;;
根据ij的信任度来决定是否与j进行交易[% @* m9 f1 w/ o7 ^, R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" r& A# i2 K( o" e" N$ l. ~% f' |# _/ m" g' K
[
% |( ]$ M- X: x$ w) K5 [: X

1 X3 w. L3 ~) Y9 b2 s6 W+ z& [+ Z0 c8 Ndo-trade

# ~/ S9 Y! o: z5 K0 r! r% J) D7 P( U. B: ~
update-credibility-ijl

8 j* z' i7 \4 K8 f8 e3 \& c1 |: P, a8 W
update-credibility-list
: T. R9 l5 B) ]& Y

) b- ?9 W- R" R# Y( A0 F9 ]$ Y# H* @* i
update-global-reputation-list
1 _  V; Q7 r2 J3 w. M  [+ }" g

, W* x3 W. z7 epoll-class

% o& W9 ?, @$ I/ v6 I" s# c4 R: @4 N: I" T  C& N- t
get-color

8 [+ a2 t8 k  a$ `9 U
5 |" [( P" Y5 u4 F$ S& o]]
$ @! L: O; P2 c* T+ @1 r# ]' ^" D- P7 X( v3 M
;;
如果所得的信任度满足条件,则进行交易2 `2 t1 d5 L" l$ Z6 K. |9 `

2 Q  u5 x# e' G$ r3 m: O7 `[
8 t' s, \: `$ a3 t* w3 M7 R/ A( _
! y% J8 W7 g) i9 Z$ {
rt random 360

! h# V$ S& q( j; v7 r* r- m9 U  g. W5 X
fd 1
& c7 J* e% U2 f! f0 h6 X

3 o; D, N; P9 x! n+ D]

$ ^! L+ ]3 G3 @4 o
. g5 w$ i/ N) e6 p8 X) ~8 Zend

. b; z5 ]$ C$ m! n! N0 c1 `% [$ h) r. r& I. `
to do-trust * I: }0 k$ S9 j% {) i. [0 x
set trust-ok False
& y  K: S' k! n& r! G( a0 L3 d! I! ^+ `1 e' s0 J( F# k" A

8 E8 |* l" X& x6 `2 X. C7 v" vlet max-trade-times 0% {4 T+ a4 c- N; K5 e0 c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ T5 z( |) c: f8 alet max-trade-money 0. k* B9 s$ J# o$ k' Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 k8 z1 E! [2 R7 Y: Klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), y* @8 r: Q& L3 k" U* E
7 L8 q8 j  T5 C! f

% h7 c5 q% u7 Z. |: xget-global-proportion
! ?$ ^) R/ `: D6 Xlet trust-value
, d  ]' {8 c6 r4 `/ vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, s9 X3 l' A; g; V, E7 t% _; W1 q
if(trust-value > trade-trust-value)
* j% L( f& x9 [[set trust-ok true]
* b+ y/ `  A4 T0 C% Hend
7 ?: Y* K1 y  Q3 k
% i$ o6 s# E# A# k4 V) {- ^& v% d/ Kto get-global-proportion
. B) A) g6 v4 [. u) u, Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( ~: A7 ]* I( v! T  O! l1 `[set global-proportion 0]
* o/ y- G" `1 w- b[let i 0
& l3 Y) \2 s7 J. c# y8 _let sum-money 0
3 V. T% `7 a: l) X% Dwhile[ i < people]+ ~& f8 ^* Y/ }' Z9 l8 B
[: z* N! P! L2 ~% H3 U- |) K
if( length (item i
6 M( |- k* e* S$ y( O[trade-record-all] of customer) > 3 )
' T5 E* V8 X/ ?1 c+ m  R  T
[
. C. l6 ^, w1 `' V& u$ g3 P- J6 Dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 E$ t8 o6 D0 N8 f, O3 v
]/ k4 x6 ?; Y5 |) I  Y* R
]
$ O) z: I) H) S' Wlet j 0
- d9 `7 b6 g( |6 |+ a# xlet note 0
  W$ y4 {4 ~# L6 ~: S8 V3 C0 R" dwhile[ j < people]1 y2 {* U6 M. p. ?2 E2 l
[
7 e9 F+ D" S4 e  M6 Dif( length (item i5 e( E# f# s. _3 E
[trade-record-all] of customer) > 3 )

. ]1 |! f. h  M1 `) u[
, ~$ N1 C0 L: d% X8 O0 Wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) F1 P. H' K& _. X& [. `' W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% ~6 y$ c1 ]5 X, J: H9 o2 y( D[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 [5 z6 \" ~0 p4 l% ~! }) U1 G]2 z  u" X( B- n4 S
]' `% S$ g" F+ _* g; x
set global-proportion note
1 ]' A: Y5 ?/ @+ d; S5 ~, V0 g6 K]
- {/ [2 s1 ^# E' send1 G! r: ~& v, G) Z& C

: q, G1 C: C& y- Y' Mto do-trade% F) P9 q% }! S& m$ @
;;
这个过程实际上是给双方作出评价的过程: K' B! b& K% @: m/ W' c% D  l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ m; N! R5 l* j$ {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: h( Z1 Z0 v4 o0 P% ~
set trade-record-current lput(timer) trade-record-current
; g, F+ E6 K* F( u! h;;
评价时间( Q7 s7 v8 w1 U9 Q$ U+ o5 W7 v
ask myself [1 s& c0 T) ^$ {2 ?
update-local-reputation
0 s* x1 m6 C1 U, l0 h# wset trade-record-current lput([local-reputation] of myself) trade-record-current
8 X6 m" z- n) ?. X2 M# R]
0 M$ y" T+ r9 C0 I# N7 O4 cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, a7 \% r* f: @, Z! p* n;;
将此次交易的记录加入到trade-record-one  U7 n+ c: b3 b: P& h% U& s! c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ t2 d2 t. j7 R. C# ilet note (item 2 trade-record-current )7 t' Z* z1 b# F2 h9 R
set trade-record-current
$ j6 l6 Q/ m5 v$ I(replace-item 2 trade-record-current (item 3 trade-record-current))
0 Q9 G: Q5 F) i0 S7 U" c
set trade-record-current
+ ~; B! g) {/ @6 g  k(replace-item 3 trade-record-current note)# O% p5 i/ c7 z/ y

+ b1 V# f; v8 a& h
! d8 `% i1 H8 A" v
ask customer [& m2 B' _+ d- q8 X; [
update-local-reputation
3 d* g5 K! u8 K9 tset trade-record-current
- h3 m5 r: J9 e# d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: d$ ]. p  f9 N]
1 V1 n. c# K( O$ d" D* |
: a; v  `5 ]# n/ l: h
4 o; T& \0 ?% k# C2 X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* l+ v+ H/ F( Q) b/ {  o7 w
1 y- G# k# ~: N' [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 v5 m6 I' c! U+ d
;;
将此次交易的记录加入到customertrade-record-all
6 y) s) H. F7 \) t6 K& d9 f8 pend4 F. h# t. ]& s4 V

9 B+ n3 O% Q) g' m' U$ Fto update-local-reputation' c. A0 d, B: }( e1 a( d
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 I& O) K  W/ @5 ?6 I8 d% L3 @" e
, c' D: M8 k' ]2 V% B2 B. z5 B, n  x- [" \3 Q( l: x
;;if [trade-record-one-len] of myself > 3
  f8 c1 P+ P5 Z) A& W
update-neighbor-total
% m; ?- t! \% q, b;;
更新邻居节点的数目,在此进行7 i$ A% U7 S/ p" F- i5 }
let i 3
6 A( X/ z3 ]! R2 Alet sum-time 05 ^* |+ i+ e# R. u# Q
while[i < [trade-record-one-len] of myself]
' j) V- k/ H" {[/ H% x) s# D  F" b6 I( y, F$ X7 ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ d* {% t& @. [4 g  `/ Q: rset i
, E0 e! g* b1 H: r0 z- _( i + 1)
2 Y3 V, v: i' ?1 W! ?1 L5 i& D: j
]; `2 x. ^, m4 V
let j 3, r* Z* z! |" L9 m
let sum-money 0! ]" t% N8 Y: Y5 _+ v
while[j < [trade-record-one-len] of myself]
4 k( ]" s/ l7 c4 {" @[
5 }% t% [$ E5 s: q# W; E, iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) d, j( K% X8 o* Z- l) Eset j/ ^3 R6 m( j. J- P9 ~5 \
( j + 1)

1 z# P( W3 l- F' C8 @]
0 A4 H  y7 ]8 }: I) slet k 33 y4 c- p: k: _4 ?* _  Z; W2 g1 k
let power 0
7 D6 h" O( ~3 vlet local 0
6 ^* X- e5 w( j2 Ewhile [k <[trade-record-one-len] of myself]% p* q& p$ [- E$ \* \
[
  O) g9 C  t( U! H# ]! k+ x4 U+ aset 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) # D5 B! o  E3 K3 w; C) b& `
set k (k + 1): J& A& {6 [3 s( v' {' u  \
]7 S( t3 I1 O, T$ x  j+ }
set [local-reputation] of myself (local)8 ^' E: z  M2 M! v  ~; J+ T7 g
end% m. k3 `) z1 C( F0 n* f9 s% N
9 Z9 V8 `1 K0 w, m2 K2 [3 w  j
to update-neighbor-total4 U! j0 A$ w+ _! a6 n

0 _, x! F* m" n9 Y; dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) C9 Y% k8 x+ }  _* Z- o7 k' O. k" ]* `2 s. Q2 T' d" b

9 J) R) W( j) ?; R, c0 C0 S9 ^5 Yend* W% ~! a7 Z2 }7 Q  c) u

. N- y0 \* a8 Q4 ?to update-credibility-ijl
# a9 R5 }" y' B1 z+ K6 p; R3 {
$ q3 t  D# c; v;;
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。
6 H7 D3 F: x) \) C) @$ ?let l 0
. [: J; h# J% l8 T( ~! v/ M5 qwhile[ l < people ]  |( _% W- B) f
;;
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% [. e2 [0 x* q
[
& `- R; m; o; Y% T3 F3 J# ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" z9 a$ Q; a/ T1 E
if (trade-record-one-j-l-len > 3)
: c% N. i' @+ c. d5 R8 S( R[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$ R" g1 s6 p* Q9 B9 M
let i 38 \2 Z* a5 Q0 @( _9 I
let sum-time 0, c  @5 V9 [7 l- K. {: T; S5 l: x8 Y
while[i < trade-record-one-len]
1 }* w& s: p1 y7 r1 q) L. R2 Z[% |+ E& f/ S* j( }1 x8 T' \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 N/ I+ g/ R1 H
set i. O' N$ N! n( c! R9 v
( i + 1)
" O4 C1 O+ a$ O* H. ~
]
/ {4 o2 D: W, W2 Q) qlet credibility-i-j-l 07 [% O9 N( S9 y, J& J4 C
;;i
评价(jjl的评价)/ J: B" S+ k6 u* ?+ K1 }- o
let j 3
% u4 s' g& K) s; E# z) \5 Glet k 4
# \; Z3 L9 T) Z% ewhile[j < trade-record-one-len]) v7 N% f0 M. h* R9 Y
[( E1 P+ `, ~5 s* w! Q- @& |$ ?
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/ u! J+ Z+ F5 W9 y4 F
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)
& O5 z8 b2 t% X% S+ @set j
7 B. a: f# t0 `2 \! _. n( j + 1)
1 H, K8 }8 @5 U5 R4 R0 @
]
, d+ }) ?" h! g4 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 ))
. R& M' [3 Q2 l+ T' v/ \4 G  o/ U" D3 ^/ N
2 Q( Z% @1 m* |3 I+ [" Z( c# ]
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! {. s" V& b: |' P9 l  I
;;
及时更新il的评价质量的评价
+ \6 Q' g/ j3 }/ k* {/ v. ]3 ^1 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 U. k/ K- P  p. W' a8 xset l (l + 1)
- c7 {4 J0 ~! T. j) r]& W5 U, L9 |) l
end( T" @' }, p% d6 ?
8 @2 h6 }. x3 ?- c7 |8 b
to update-credibility-list
. S. o; |- ?% Flet i 0
+ J* ~" e8 _* _: x; Owhile[i < people]2 z7 w4 R" y& ~! Q$ O5 q' Q
[0 V. g( N6 T9 n; E
let j 0/ e8 t" P( I, L, l; S
let note 0
* j, P4 m, r- V: }$ a7 llet k 04 ]; q; l& X2 c( B) W1 ]
;;
计作出过评价的邻居节点的数目
: D2 R+ p8 q; v: X( s% }* _3 y* ~; @' pwhile[j < people]
5 Z- m4 @" _; k; l( U! U[0 ]  E# J/ p8 e3 @
if (item j( [credibility] of turtle (i + 1)) != -1)
( y% C8 U1 d# _7 y) g;;
判断是否给本turtle的评价质量做出过评价的节点
9 g6 S7 g2 d3 ^* S* i  e[set note (note + item j ([credibility]of turtle (i + 1)))
9 x3 ^  ~) c% L+ O* X;;*(exp (-(people - 2)))/(people - 2))]

7 ^3 R( s- M0 Nset k (k + 1)
2 f; Q. X3 @/ Z# z9 {# x]
* @; b0 y) Z( v  H$ Rset j (j + 1)
6 [. {1 n; v0 I& x2 F" B5 v]
0 `) a" \3 j, W+ b2 u  g4 Aset note (note *(exp (- (1 / k)))/ k)
2 Z; V& }- c( g1 J$ h- ^; uset credibility-list (replace-item i credibility-list note)
" f2 m7 \# V' o) Kset i (i + 1)
4 x2 E+ ?: A( X/ g1 x  r]
+ Y+ z( R4 A% P: l8 [" b7 Lend$ Q  X- l+ @1 \. k# Q6 }

, [+ ?' N$ T9 D7 b( X: V$ Pto update-global-reputation-list) ]" m! z' s/ O# T3 x; f
let j 0% v1 O' \! ^5 Y* t# e
while[j < people]
9 x  }5 W1 g9 a7 w  F0 J- v[
) Q: ]/ X# D8 ^; ~1 llet new 0' ?5 t4 k6 Q' z  [# X4 i5 _. j
;;
暂存新的一个全局声誉
+ ~8 G% o0 D& B1 b0 m# Xlet i 0
; V, q8 ^( Q% U1 |  m2 U% ?. e4 Rlet sum-money 0# @1 K; j- W& s+ T! Z4 o1 \/ e
let credibility-money 0! _2 b2 D  i/ b8 _
while [i < people]# |5 }& Q( `3 v+ x, ^5 ~
[7 l* {, t0 j6 _, T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' H& B' a7 b3 y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" N/ \: `4 t$ y7 w8 u) [
set i (i + 1)
9 Q0 ^4 W4 v+ M& |' A# m]
# A& d  Z+ O$ B4 J. |let k 0
6 ^7 l- l6 |, Q  q  Hlet new1 0
( _1 k2 Y! z5 o" W; ~' a5 Zwhile [k < people]
+ X; i% l( ?& r4 S5 `6 _[4 n+ `% J0 h8 ^/ c) _, 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)
8 S8 F! |( d- q- D  Q* {set k (k + 1)
2 W2 S; x; o2 ^( s]
& g9 F9 p! k' mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 M4 n; B: ~/ R& b! g
set global-reputation-list (replace-item j global-reputation-list new)
& Q8 T! S0 W4 C" A4 c/ ~8 Sset j (j + 1); J& a+ l; `' ]7 p, w4 {& W9 m7 j
]
9 n. V3 i: f! J# E2 s/ Q4 Nend: |$ B3 T2 T$ \

, I. X7 E+ ^2 F+ e" c
* Z4 R3 d* Y) d2 l3 K% c2 P1 Y0 L& ?# \$ m* x5 b% A% I; o+ \
to get-color
. U+ n0 ^3 E! b+ ^6 }6 {  x% n; j2 U+ E- E% w; ]7 Z7 @
set color blue

5 k" ?6 L! M# u+ Cend
- z. e& s. D3 C% h: x$ p; E, t0 @" \# ?9 n9 G. {9 ^
to poll-class+ [$ a, |% I1 q" D" K) }* \
end
! R5 r! Q4 m% C& X0 o' K3 d  T8 [8 |
to setup-plot1
. ]( s' E7 K  ?& i4 F% Z- l, v; D) X% |% @4 z1 Q
set-current-plot "Trends-of-Local-reputation"

4 t* T$ M( B' F" N7 C& g& c
7 T& {* ~3 z" l- a5 Zset-plot-x-range 0 xmax
" p, L: \: R# `/ j: Q2 F
  c4 g+ ~+ n7 u
set-plot-y-range 0.0 ymax
5 R) {# u" M$ T- A! ~
end
; d' k0 z+ `0 q0 g4 s9 |
0 L6 \! B, t( X: }& Q" O9 nto setup-plot29 u, @& Q* a* @# t
4 |3 u7 _1 _" i, Q" @! z
set-current-plot "Trends-of-global-reputation"

& A2 ?; `7 v! Q4 ~% i
0 Q0 z) L- l! l& N3 I+ _set-plot-x-range 0 xmax

; |  Y8 b  P9 Q9 ]3 h( K9 q' `' R% p; \7 p+ ^
set-plot-y-range 0.0 ymax

* _9 ^( e: \' Zend
4 R- @4 r* e/ D& g
* c/ R6 n# m, eto setup-plot3
5 f: m+ Z- e- K. r' b1 ~7 p
0 C% j1 F* N1 ]1 m8 rset-current-plot "Trends-of-credibility"

& j; H$ x0 V# Q/ U& M& @
  }* V+ h# q! e1 Pset-plot-x-range 0 xmax

/ D2 E% x5 z% I" u; {8 W
! f; i  P) G6 a9 I7 {2 w& ]set-plot-y-range 0.0 ymax
4 ~, o. g- x. D/ B; Z
end
: z, p/ j  T' z. C2 a! L( n  w
0 i1 e: d+ \* [" {4 }1 Hto do-plots
$ \' p6 p0 b# |0 ~5 G3 L3 s, _set-current-plot "Trends-of-Local-reputation"6 e7 R' i9 O+ `  @
set-current-plot-pen "Honest service"
  t. Y) F$ l# B: S7 ?8 Uend
5 i5 }/ c  X- f) g" w- Y
' W6 N. a; Q0 v5 E8 g[ 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.
* B9 ^/ N6 m) n/ ^% a% x: n( o. o; C" p9 g  B: A4 D: `
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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