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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:
$ b& L5 t! O9 D4 yto do-business 0 x9 ~- s. C6 I( r1 F
rt random 360
5 C, `* I" V8 X7 |2 _( O fd 1
) u6 V- I, u6 E* ^ ifelse(other turtles-here != nobody)[
" Q$ K* c( w! I7 u1 t% G' E   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.
7 c. q8 N# C4 B% O3 O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 z; q- f5 }4 C. j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  @6 T! T; z; e
   set [trade-record-one-len] of self length [trade-record-one] of self
! Q1 g, _+ Q5 r6 P# C   set trade-record-current( list (timer) (random money-upper-limit))
! r+ ~! l' W$ M% n; g4 d8 A1 ^2 k: w; ]& O) A
问题的提示如下:/ O/ Y  [' @% l

5 p! p0 l( t# T  s; G: Lerror while turtle 50 running OF in procedure DO-BUSINESS5 t( s( f7 M. d  ^# y3 y
  called by procedure GO
0 H5 k+ z4 v$ ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 a" Q8 m0 ~+ l* B$ u
(halted running of go)2 z- U! a) ^& t$ P

3 @) S+ X. y# z; n! P4 M* t& O) q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~~- K  s9 S3 z( _/ ^
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  M# c/ I3 f- l: [
globals[. e5 `( E. N- |% C2 D
xmax
4 E* e4 I/ l( z, [3 E. Tymax: j( f- q2 l3 [. a
global-reputation-list+ R) x. e2 s- U/ B" b% `
4 a" B, v2 y1 F* k
;;
每一个turtle的全局声誉都存在此LIST8 B+ q3 q& J+ m% N
credibility-list( @5 I. C( h- J/ t& m9 W
;;
每一个turtle的评价可信度& Z1 o4 y. v/ ^+ L
honest-service
1 ?  a6 [2 \" t+ C" f' ^unhonest-service3 j/ [" A7 Q, h0 p8 e: P  F
oscillation" ?% h1 D* A% P% N0 H( q
rand-dynamic' V. [: ?' r! p* y' g- {; ?8 E1 ]
]
+ W! i( \. H1 Z1 O0 u$ N1 w5 ~/ n
turtles-own[
- G0 |( |; C, `, O5 ~trade-record-all3 f2 A4 x4 D. A
;;a list of lists,
trade-record-one组成# ^0 k. E1 A, a3 p  Q
trade-record-one
" ^1 H* _. D3 `, q) I6 E;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* [! e6 C$ x: G1 O8 V3 _7 Q
: M. V- C4 }  J& k) c% b- s* 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]]
0 M6 d6 U5 ~3 Z' ?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]( Q: U" v3 i" s! S2 A# q
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! t4 j+ H( J$ D4 a4 F/ o. k7 d
neighbor-total
. w: G6 T( p  \& S  V;;
记录该turtle的邻居节点的数目
8 M) {" p; `6 V5 V+ L- v! htrade-time
* |; Z/ Q; o7 d( X! p;;
当前发生交易的turtle的交易时间+ |4 L% U+ P; E' w
appraise-give2 A! T9 a- L7 r! X+ O
;;
当前发生交易时给出的评价; `' h0 q, g: u1 q7 Q% Y& W
appraise-receive
! }' O4 V6 Q. J;;
当前发生交易时收到的评价5 d, V' Z+ T- F
appraise-time  e( {( @; j; Z5 t9 I: F4 g* ~
;;
当前发生交易时的评价时间4 ]. f7 u! k. r- h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 [1 u3 i' g2 {3 Z0 n" Z5 n
trade-times-total( i$ n* ~) s/ v
;;
与当前turtle的交易总次数, }: U8 m: [' z9 V
trade-money-total
7 R  t5 ]# o- ~9 C  D& x;;
与当前turtle的交易总金额% q9 G' ?/ q# C2 v
local-reputation" b9 @( P: n: r+ G+ Y" f
global-reputation. J; R+ ?. A5 T( m5 L" p
credibility
, I: U8 A$ q( D& y3 b2 p1 T;;
评价可信度,每次交易后都需要更新
$ Q( I7 Z* a$ Tcredibility-all2 v$ W8 X( k$ k3 i* z' b+ S
;;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
( c$ f2 B; Q6 U9 U
! b7 f. t/ s& ]; n0 M8 b# [;;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) s7 ~1 x/ u7 y6 {
credibility-one, C8 V! F) b4 Y, \7 h8 O
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
9 Y3 ]/ @' R5 J) i) L  p  V5 z* G( D# r$ Gglobal-proportion
3 x% K/ K8 M. @4 Bcustomer8 |9 ^) }" W3 |8 F
customer-no
7 k3 M. c, s% p, D5 {! I; D! E- B- N1 Ntrust-ok2 I) z1 h9 A9 e9 s1 Z  ]
trade-record-one-len;;trade-record-one的长度4 T  r# N2 \- [" }& @
]8 ]# l& c* n5 V' F9 w

! B9 v( H' r% f: }1 R5 R+ V;;setup procedure
2 r. `8 R+ W) O9 G/ C& N# m# w+ O8 i$ n3 d
to setup4 r1 y. m( K6 b# P$ H" C, v

4 y5 f% Y; H4 h% ~7 Dca

$ I6 {, F% I0 H0 Y" y, s& h0 g' P
+ F4 @' W- x) d6 |5 Ninitialize-settings
+ Y; d5 z1 Q- z' w, u

" t" o. t/ j( B  J$ G! {crt people [setup-turtles]

' R, H7 ~5 D  S6 Y* E) Q# y. K& |. Z& W8 _# S7 C. ~
reset-timer

" N2 l5 ^8 l) y. x& t/ g. S7 z" [( s) F9 l3 ]; _
poll-class

; `- w' M3 D& I. a2 K
- I! C. V3 v  rsetup-plots

9 p, S5 X/ G0 m8 G; Y6 U
+ [0 D% w$ p$ N9 z" U) vdo-plots

, L% ]" t. f' bend; `1 j% c$ p. D$ _( b0 R/ M; g
8 I  c: x) }' X( |
to initialize-settings
3 t2 _# P# n4 F' `8 @" O9 T/ s( F. C" x, R$ j
set global-reputation-list []
* {( h% U( s- m: {2 x& w7 T0 p) Z9 A

7 c+ F- b' t, M5 z. Oset credibility-list n-values people [0.5]
% |3 E* D" s9 q/ w* t% F/ O
8 s# C- m2 C/ X5 m
set honest-service 0
% ^; N* o7 w/ T- Q- q2 L
$ B. N# T: N& x1 m, ?/ P2 K8 |
set unhonest-service 0
1 s! W* y( [, ^  h6 ?4 L" ]
, w. {) `8 ~! _8 Q, }4 U
set oscillation 0
9 p& w& a, I$ V7 q0 z

" x/ z8 |+ i. y$ @$ J1 ~* J. b; jset rand-dynamic 0

' g2 c6 R- F) ^& ?8 }; r; wend
9 S( q( |/ Q" i' u. A- W" A
( G! x* ^" \! @) H  H* n- nto setup-turtles
& G* q8 `8 l' f6 a  lset shape "person"
" ~5 L2 o' p, S# n% rsetxy random-xcor random-ycor
8 s" a  @, M* A3 j# zset trade-record-one []! h! n# y2 ]: E8 _$ B

3 B3 x4 H. b& ~7 @: xset trade-record-all n-values people [(list (? + 1) 0 0)] ) E& }. e0 p$ b6 ^2 C1 m

; T0 p* c" [& U4 {. Jset trade-record-current []1 z) f% k: C# D- h, W: M# s
set credibility-receive []
& W1 u0 n1 n3 Jset local-reputation 0.5
& P; U& \6 ]: S+ Dset neighbor-total 06 Q, ~8 L  @' Q
set trade-times-total 03 t; p; p* G  p( l! i; H  m
set trade-money-total 0* f& E7 M5 z9 Z6 c# e+ M
set customer nobody
# `: U$ @* S* Kset credibility-all n-values people [creat-credibility]7 {7 f0 P# y. B
set credibility n-values people [-1]
0 w* J6 T; x1 A% b9 H; R) wget-color
4 i( L& t$ @( y' Q1 G: D1 G
/ m  ]0 c1 k  v7 |$ G/ Z6 @
end7 d& ]" w4 u! Q6 }

& G; A$ k2 n& ^  X4 dto-report creat-credibility
9 v1 G' C6 L- G3 n+ R! @7 ~report n-values people [0.5]
5 F) R0 F2 _: g2 S& ^  e8 {+ Eend' E. n9 Y3 ~! K: o% ?

& J( R% T, v; J# G! r. X5 |) Dto setup-plots1 @  W# L9 e4 `& o8 t* g5 P
, ~" c6 C- T0 A7 Q4 X  g& l
set xmax 30

% X4 F* T  r& z, m; o* ]- P; u8 J& q
6 I# C$ b; F" D$ k1 Dset ymax 1.0

* m8 O! h( C* g  Q+ |( B% c
9 a$ \# F# p4 U* J, nclear-all-plots
( |- k3 x. ^4 c

. d1 m( ]0 ]. b) [# xsetup-plot1
# a5 B3 @) s& f
2 q& }* k6 ^6 X- ^; a# T
setup-plot2
4 a) s6 U% S/ q5 u

6 \; x: s$ p6 ~' p- {5 f, \; `( _setup-plot3

! O- j8 g; G' j+ @6 E+ u; C% ~end
+ ]6 }  z6 i' {7 \6 i) o' y1 e
; ]; [. |, h7 n" s" y" h;;run time procedures
) m/ C3 ]: G! ?2 S1 r, T8 Y
. N. f- N2 {" A* `to go
, l, K# ]3 O* u  i9 Z, a3 n9 _% W- z) |3 _$ ?& |1 c: e  h
ask turtles [do-business]
0 U/ a) L6 \( F. e
end1 y/ Z* a: o" ~& d/ w

8 W: P# @7 L2 x; U6 u; G& Jto do-business
3 Z3 U( i" a3 X) d) t. _; r3 Y

3 F' j9 {) e0 z1 T5 b8 [, R# A1 @0 |9 P! T0 {) _
rt random 360

' ]' C- p( Y* \2 t! H
' ]% K/ b5 X  T' F  v3 pfd 1

% ?- w4 [3 H1 O( L
, D% f" A: C$ s- \' T/ kifelse(other turtles-here != nobody)[
2 Q8 Z1 Q+ r0 M0 |+ N$ L

9 a! J4 T6 k1 p, Y8 p4 eset customer one-of other turtles-here

5 Q; b* l5 @6 c: i% O& k& k
, C# j) @6 P% V3 S8 o1 [;; set [customer] of customer myself

( ]1 `3 ^; y) L* l  R$ w6 G/ Q5 t5 Z5 u+ W
set [trade-record-one] of self item (([who] of customer) - 1)
5 Z5 m% r) Q5 T$ ?7 Z[trade-record-all]of self, D) u8 _6 l1 g: t& P  k
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ H& f% h' _1 S! |

+ K2 w8 v& q9 Fset [trade-record-one] of customer item (([who] of self) - 1)
. G# `1 u4 w% c, H$ U% f[trade-record-all]of customer

! k- |0 e7 i6 e+ |2 z! c9 ^2 X: s. S
4 y' z  M9 Q+ Z, u2 a' uset [trade-record-one-len] of self length [trade-record-one] of self

% D/ _2 P% {7 G6 y# G
$ Z. K9 H  F1 z  Vset trade-record-current( list (timer) (random money-upper-limit))
7 X5 J# i7 x, B. e4 c, K
# R# w. E  u3 T. R, D
ask self [do-trust]8 J1 X! o& n  m) J: i. U
;;
先求ij的信任度
2 t( U' m0 F, O1 I+ V5 E  _! J, ^5 F  u8 l
if ([trust-ok] of self)
, ?+ b0 G  v5 G5 A' r( G;;
根据ij的信任度来决定是否与j进行交易[
! g1 ^# P; J+ G% d0 oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- R6 E% Z2 Y, G, B

( c6 J( e' c8 }6 P[
' a. `! d& b% A8 m

! \8 v+ f- U- R! n. X* x+ o* N; x+ [do-trade

4 M5 e2 u6 Q  `0 N) A; K! I/ B$ f, k- c2 N6 b1 p
update-credibility-ijl
8 S0 [5 z. Q+ o2 @1 S6 I% B8 O

4 M6 m6 w, S; D+ L6 l2 d  Mupdate-credibility-list# t% J1 {- a* ]$ N' M* c6 p6 R# j
6 E% g8 L4 o* B/ R7 b
3 N) ]9 r( O9 A* ]7 w6 h  p
update-global-reputation-list
- X- C2 L$ ~. q; }' M

' W: K" L+ S% J3 \! v" T/ c) Zpoll-class

8 h& G) X- E1 B+ _2 P6 J5 @1 N9 w; T- r! A. e4 X- Y& ~2 d
get-color
+ n$ {# C8 g: ]* ]; q! c* x7 F

6 Q/ H. D% U- C& h" T9 B]]( f; _  z2 g  E  Y3 }# v

" D  T7 J) w" Q% ?. d/ y;;
如果所得的信任度满足条件,则进行交易
& c0 ?4 d# U2 e+ b  b6 p: d( Q; ?/ B& D! p: I  M( W5 n; h
[
; _# {/ Z8 D0 l3 y

% ~( r- s% V5 B$ L% O3 irt random 360
; i6 o% Z! R5 h6 b: I
4 j8 [+ R; s/ W
fd 1

% n7 M3 i& x) t4 O* M( ]
% A6 C3 _! l, c: k  U$ o& r]

# o5 _& o: U1 {2 t% \. D; d7 V. a! {
end

7 V5 K. F+ p5 x' f( S, r
0 J" K4 V! z1 Cto do-trust / L7 J1 E/ A4 {, y
set trust-ok False
& x+ L9 @% \0 y* l2 [( h. M9 O8 ]" n( n& b0 j1 t, F) B
* n# d' H2 Y5 F/ R
let max-trade-times 0! S" c9 X% X4 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ M& k3 g% m1 Jlet max-trade-money 0
; s1 c; S! o' o7 `! _) k' i; a" d5 ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 A$ D6 U% Q- m2 h/ X+ d/ Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 U! \3 Q! v* t0 P+ U
; f5 }0 C% H0 ~1 y% }* _' o( F! C) O
9 P# o9 M& M9 W: V
get-global-proportion) r  X% z6 C% U% M0 A/ x4 L
let trust-value
4 Y  o  g. Z8 n6 `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)
8 `; f9 F' I& z+ l
if(trust-value > trade-trust-value)4 |6 h( l* r- l+ G. H# m$ z
[set trust-ok true]
* L) R* Y) @; |* @. d( r: \end
3 l" T7 l1 v3 P6 q- x( H9 M; _5 T. f# E( [. ]
to get-global-proportion
" y$ w/ w$ i0 a3 gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! Z' {4 p" ?' P- t1 B[set global-proportion 0]9 A  C( Y3 V8 c# _) F/ x7 i/ e
[let i 0$ n9 y, y6 R2 W5 H9 e
let sum-money 00 m2 z7 G- R" M0 \0 H# ~% M
while[ i < people]
& Y  H+ \/ t; ?' t[- F, c: ]: r8 L' n: c
if( length (item i
, I$ |- l% \3 ^% X) P[trade-record-all] of customer) > 3 )

) Y8 Y, d; F; i% V; R$ Q3 x* y6 E[/ V& y6 Z: V& i( C' |. f) ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ O& _3 D+ e# ^/ `1 \# p1 c]
( E& [) w5 m( v& f: b0 I]
3 G* R' u( }) l$ v' Vlet j 0
8 R2 g$ {7 C; F. R$ m6 [let note 01 q( w: ^/ ^8 y8 o7 s, r# M/ G- v! U
while[ j < people]
8 P: b  Q- Q- ]7 W! l# D- b# q[
& a/ X: c+ `8 u6 B- x' Sif( length (item i
! a' c: G, o& X/ ]) c9 e; g) s0 M/ w[trade-record-all] of customer) > 3 )
$ z5 U2 o! f7 R$ f8 U
[
! V6 W3 b+ y, }/ \: @: yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- Z9 b3 U# t" G+ V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( S. \( F5 j- v, j" k
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 E+ p& Y) v. c* K, Q9 V! B
]
  w" k/ W* _8 W" v$ E; ^5 V]+ [9 R5 f3 ^0 x- x2 @& _# f. e
set global-proportion note
6 p# S7 q3 n, D/ p* [1 e$ k]
" f0 w3 o  @0 C. Lend, a4 z, x3 R% h5 G' C0 w; b: g
$ `: t' c) N7 U7 W* P1 j+ p/ i1 M
to do-trade
4 C; P% j2 C) T' b8 {0 Q;;
这个过程实际上是给双方作出评价的过程
" I# z. _, t2 u- |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; [( {9 ^1 t: U+ yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" H: S0 B6 c) ~* P: N: S. M
set trade-record-current lput(timer) trade-record-current6 W/ C) ^+ e) V3 Y
;;
评价时间
9 K" N. v; k# U' _6 X1 {' Pask myself [: e. C3 f- u. j- I
update-local-reputation
5 B( j% t4 n4 c% fset trade-record-current lput([local-reputation] of myself) trade-record-current
6 b. g2 w( \5 V]
( d2 G$ o/ D( p* l! {- J  yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ n2 w& y) |, H
;;
将此次交易的记录加入到trade-record-one- k9 r3 q2 v3 R; p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 y* _( h) H, m* Q/ Y+ I5 }let note (item 2 trade-record-current )
- A# r% X$ K2 X, B4 Z) S& vset trade-record-current3 g! n% }& Q$ u% r
(replace-item 2 trade-record-current (item 3 trade-record-current))

! L% Q, Y/ Y0 a  U1 Aset trade-record-current+ S& E3 P2 K( l; r$ l! v
(replace-item 3 trade-record-current note): q9 b! l5 T- p8 j* `

7 N' u8 H! F( k) E- s

4 H1 z$ t' s2 H; Q* c9 G+ _6 v; Vask customer [: d1 l6 V# {" m: z) Z: t7 s5 s+ B
update-local-reputation
3 F: i) J5 l! m) g/ O  tset trade-record-current
" x) f! |9 S. s1 P0 B0 m9 s& I+ N! l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 {; j) ?% g, a0 B4 Z. ]( ]
]$ a* h( L: t! [$ G! ^* F3 b$ [( r

$ v; r0 B$ W+ D
0 r4 f  Y7 ]4 h' c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' A; z) y* x  n7 B, T* N+ c7 P3 G- @
# }# z# ]: }( ~8 M7 l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! Q8 h+ M4 S  n3 f8 [  \;;
将此次交易的记录加入到customertrade-record-all3 [; X7 z( {) Z  i
end
9 e: n3 t. C+ N! d: n$ B: b* h' l- w( h* c' `( j
to update-local-reputation
0 ]$ r9 c& R/ E2 h! i0 Wset [trade-record-one-len] of myself length [trade-record-one] of myself2 ^1 O* x( ?0 Y/ W

; r6 i2 H: B( A7 K4 ~8 f' ?; W" ^5 Y$ _" x: j5 F3 h
;;if [trade-record-one-len] of myself > 3

$ v: z/ f" d" {) Eupdate-neighbor-total$ G* l5 X- d9 X5 i; x3 V1 b( V9 l5 d
;;
更新邻居节点的数目,在此进行" f4 @/ \" y7 [; Y( m# F& F5 a
let i 3
2 b2 H$ ]5 @% G9 a1 N# h9 ]! Flet sum-time 0# u0 l- ~, a0 |/ ^: N1 a5 W
while[i < [trade-record-one-len] of myself]
2 T$ l, e; k' U- ~! o* f[, J. V2 [8 ^2 `" |0 K  p* |; i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ f) h4 u2 ?+ v, a* `% i% `
set i
5 B9 R- S9 ?/ Z0 B4 V' ~' @! S. R( i + 1)

+ B$ O( @. a& |5 G! D  j% m]' n$ f8 X' R0 ]- d( Y8 m; g4 M
let j 3
1 S; @6 o2 S" l" u' n+ Llet sum-money 0
! f1 }0 e& p* Z+ u& Fwhile[j < [trade-record-one-len] of myself]1 J+ Y6 _, U- G
[
4 h2 d2 K8 ], k9 e: Kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)) b) J# O, T' }
set j# r+ t; z& a6 Y  A$ s" P
( j + 1)

8 I* }" b- I; f% y# m! i1 e]
) X* ]5 _8 I; I" X8 x2 t' |let k 3
- m6 w4 L0 d5 A$ V2 V  A0 mlet power 0
% \# @5 p# L8 u8 i; T8 Mlet local 0! _$ t/ `* E" \; {. v
while [k <[trade-record-one-len] of myself]
! A! ?) M& s, b6 C+ I[
5 i( h3 [. B) v/ \& |' |; A7 ~# Hset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) . w, B# T: a# N  I9 I" r
set k (k + 1)  `, H0 ]1 A, c3 ~
]2 o7 @( n8 F* q# D+ X9 w  b& q: k
set [local-reputation] of myself (local)  n4 l! B/ n' s
end
. E/ Z) \. Y# F% p( n* I
$ a5 ?# ?. l  m: kto update-neighbor-total3 W/ ?4 _% j2 ^, l' l3 V5 @. ]

& c& r6 [4 i& n. |8 ]. {. X* dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 w# |" c. ?, a0 M
/ B# }! Z! C: P

& \4 @) p6 _# H9 G" jend
0 L( f! F# s& d; ~+ e/ R3 k1 {9 P3 o4 A. ^' b7 U" d2 b1 r
to update-credibility-ijl + D2 {. u- B, j$ R" C7 A, f) S/ }
) N2 x5 Q* M/ z1 G
;;
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。
% n. A9 j/ @$ ?4 U% t2 M2 B2 clet l 0) W1 K6 i9 z6 h& [. X3 W
while[ l < people ]; O$ |4 ?. ]5 z* c* U1 P- O
;;
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
2 w2 w( {7 U" E" V- g4 d  S[
; Y- Q6 f2 l7 w( T5 u5 }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 q: U, g; Y6 }8 e+ Z
if (trade-record-one-j-l-len > 3)
" o- U* U3 B: R, G! l[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( v2 f" P% s: F
let i 3
  Y9 m$ `- B% ^% v, L1 u+ plet sum-time 0
* u5 v8 H# A* L% V& O( [while[i < trade-record-one-len]% T& Z3 W! {) `; V4 k
[
) i& [6 E5 l7 }6 P6 J; z3 d- h5 lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* B. ]- W" N! [1 A5 ^) Kset i2 M3 a# H$ c# n3 ~2 w- G4 c
( i + 1)
; z9 r0 F4 \' N
], u. M$ @0 a) }( Y: P- b0 M
let credibility-i-j-l 0% A; w/ T. ?1 ]" v( e
;;i
评价(jjl的评价)% V3 ?/ `$ i/ O
let j 35 g  }$ o& A* Y7 B7 |" s" L$ R
let k 4
& p( O; C' g4 ^2 N! z- P1 _5 n! {; Ywhile[j < trade-record-one-len]. o" D+ U; o* @
[0 h& J+ H7 V9 R4 e9 R. d% m
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
. o0 k/ j7 p+ I1 }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)
" c5 I6 ^1 f4 C* P1 g; J2 rset j4 D' Q: q6 \8 X4 _& b2 i, w
( j + 1)

0 d1 }; e2 r% E. {. b& X# B/ l]
' ]$ J* }+ v, gset [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 ))3 D% v, L& [0 V- w" b, {, ^5 k
3 y8 a0 H7 c. c. x
$ {: c, s/ {" R" m! N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" g* K' U& L# ]; y- h: x" J! a
;;
及时更新il的评价质量的评价
# B6 z8 |3 D6 u# Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' \7 }0 i' E" `- Pset l (l + 1)' u, `& R+ K8 `# d
]6 [( \6 u, |5 A
end
8 e2 U, ]  `) ~% l
* p9 _) e7 W6 v* \0 S# f1 Y0 pto update-credibility-list7 P  l' H/ ?7 O8 F( U$ G' [
let i 0
0 m0 u1 z1 q: I& C+ m1 x1 twhile[i < people]
  X! t0 }& W! X0 U  `[5 b( p3 w/ [8 y" M) Y
let j 0
; x, o0 e. h1 y( mlet note 0
% y, k$ h. P* Vlet k 0
8 _! E3 v- `' Y; x;;
计作出过评价的邻居节点的数目
1 ?3 |  B( t2 l3 x( wwhile[j < people]. H9 h) o$ z. J5 o" E) D
[
: D6 Y. p  G. g# L' l+ G1 Nif (item j( [credibility] of turtle (i + 1)) != -1)8 l% M! X% {# p. `" }
;;
判断是否给本turtle的评价质量做出过评价的节点
  e* i( t0 J6 \[set note (note + item j ([credibility]of turtle (i + 1))): r5 Z) u) r0 H0 E+ G2 W
;;*(exp (-(people - 2)))/(people - 2))]
$ m3 r: Z  z+ j. ^6 U! M! \6 p
set k (k + 1); Z( g. q7 f6 e7 ?: W& v9 e; `
]
' Q5 }& L8 J6 z0 l. }# T/ h" eset j (j + 1)
) v, I/ g) l; ~]
8 m# U& L/ Z/ y9 D, ]0 m9 W7 m* aset note (note *(exp (- (1 / k)))/ k)2 o7 z- s8 k3 y; u3 B' b
set credibility-list (replace-item i credibility-list note)' _  N5 ^+ L8 S! f9 X) M, t
set i (i + 1)
" g# A% `* ^6 b! Y8 L3 y]6 C7 |2 a- w& I9 F" u, a, j
end; ?; S, N3 f  V# y3 v! k

2 O# r( _/ V4 J5 l/ H2 `7 Dto update-global-reputation-list
) s! [  u& a5 m7 e& Dlet j 0, x8 d0 y2 c/ ?/ q
while[j < people]- K4 ~/ a- B( Q+ k) S: X
[( D* E9 ]6 z2 K- E% Q
let new 0) ?" G3 s8 z* {* H9 f
;;
暂存新的一个全局声誉
! [" B1 M( E( i  j, ulet i 01 ~* t) y1 O  w: s
let sum-money 0
7 F# V$ P( I* t) i$ v4 mlet credibility-money 0
9 H; r2 G' b3 j7 s- Qwhile [i < people]
  q3 Z! g: n3 T0 `4 r& }: x2 t1 }6 G[0 S  G2 b' W& w; e# G
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 m; w9 m$ h+ sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; k/ K+ N7 ^9 j4 d# J$ }; K2 Eset i (i + 1)
6 Q7 {8 D' b% A- C/ q]
; ]" z0 g2 @) Klet k 0
5 Q* ?% a4 U( k. xlet new1 0, q5 ]' Y. O. g# ^
while [k < people]
2 Z* s. d2 k7 O# P, |[+ p" F  K5 `. M1 R' [. H
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)1 j  l$ x. [- A5 h3 W
set k (k + 1)
9 s0 t# X+ h( d  w7 y- Y]
1 d: v/ r2 a" _" K& Iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 K+ o3 U& z5 D( vset global-reputation-list (replace-item j global-reputation-list new)
/ d6 M' ~6 E9 p+ Jset j (j + 1)
) U: [7 V/ Q$ V]
+ k  [! l! q( E( L- x5 Rend
3 `" O* x# V- F' f6 e2 h1 O/ U5 E5 l, F: r. E
- t( M0 D2 h; Q- d# l

/ f4 o# Z) s9 oto get-color
+ G0 E" `& J; U  y6 G, E0 W$ b: S8 [" J& F
set color blue
+ H! A% I) |4 T+ _
end3 H# N# G, s/ A3 K3 T" z
! t/ E$ s9 t$ `2 a5 ^! I. |/ U8 {
to poll-class  f0 K- D& m4 x, O9 T& R
end: Q0 Q' W. z. ]- z* ?  M* w

0 q/ T5 m; w) @0 J& Jto setup-plot17 c- x8 u+ d) K( |$ R( W8 G) k& j7 x

* E' R3 X, Q/ \1 b" x( p, U2 O5 pset-current-plot "Trends-of-Local-reputation"

& \" s2 H6 e4 r6 f" E
! f# ^3 G7 K: U6 ^9 Eset-plot-x-range 0 xmax
: J  l$ Q) `0 y6 Y$ A  }# E7 O
$ w1 n! B; E1 Z' K+ V3 {1 C
set-plot-y-range 0.0 ymax
, v4 f& F8 I4 {. y7 ?* k, }
end
; Y& {% O) t2 ]6 O0 H; I% ?. P/ N" I* Z# g. X/ F3 m# g) L1 V3 B' S
to setup-plot20 ?5 @) O* m  ]/ n

# z8 V5 y5 g  |! T9 lset-current-plot "Trends-of-global-reputation"

8 ^: a+ H2 ], W; ~& _3 R# f6 J; T& H) `
set-plot-x-range 0 xmax

1 D5 o( k9 p4 W: f! I/ ~9 W! b2 _; q% u3 J. d  I" O. h0 a
set-plot-y-range 0.0 ymax

6 o# E0 [0 ]# N! ~) P' s0 B% uend! P( w/ ^  \& W' U& p

/ e% v* @( V; O1 C/ O3 ^to setup-plot3
+ Q) Q: n  Z  j1 Q) D; K/ M  m. Y, _% S( r
set-current-plot "Trends-of-credibility"
: B( w7 [: L& K" Y: a. Z! N6 ~/ G
/ N8 I! N6 C  N! f7 R& R0 ~; a
set-plot-x-range 0 xmax

2 C* b% _. y# M% {
- E3 |  l1 R* L! j. e  mset-plot-y-range 0.0 ymax
/ {2 P% d" K" [
end! f% A: Q2 r( W5 n! O7 Q4 S
/ Y! C% X( A& b+ b1 z7 L
to do-plots
+ S2 q" [- ]: t" [set-current-plot "Trends-of-Local-reputation"
$ p4 i+ l' q$ m1 l8 ^' N* Nset-current-plot-pen "Honest service"
2 |3 z6 q! [' `- wend' Q" r. ?* {+ m0 o

3 t/ g4 Z. N' n7 ^+ M: l[ 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.; s' X( p; h! @3 m0 o, ^9 N3 ^" u! _2 B6 }
' N2 V3 e; O( h1 O6 w) B
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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