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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:/ o2 Y- l# j7 l% P
to do-business
0 L9 y# k7 O+ G. K rt random 3605 X7 t) a/ u$ k  d# I% G
fd 1
7 L1 U: q' z, {7 X% D ifelse(other turtles-here != nobody)[
! t1 C9 V* s+ _3 i  E& a   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.
) n! m8 t7 P3 c0 C* `: `   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# K$ O  \0 G, U8 b( Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ y2 S, q& Y* Y" }
   set [trade-record-one-len] of self length [trade-record-one] of self
5 f' S: l* ~2 @$ F% G/ [! W$ x8 j   set trade-record-current( list (timer) (random money-upper-limit))0 F; x* ^  ]  [$ O  J' L

0 p$ j+ G: ]" n' l问题的提示如下:9 J. K% h" E' p) D2 G7 h

* `3 `) B* k& w) t9 A7 qerror while turtle 50 running OF in procedure DO-BUSINESS9 d- U. m/ O6 N. I( P
  called by procedure GO) X: \: O. {6 g! d6 s- A0 e8 L* W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 a) p2 {& }0 k6 |! d
(halted running of go)
2 p# e1 _- L1 I4 \4 q6 k. t9 y3 I: h9 f
9 x0 N% t' T+ B* V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~~, P* J! N6 ~  i8 N! a2 O' K9 g
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- x* ]; n& ]$ C. ~/ z
globals[& h/ u/ M: }, l/ B: [0 f& t
xmax
& Q8 Q, b$ p5 W: Qymax
3 H7 J, P: c' ^# y) B3 r, B& m- Bglobal-reputation-list
0 s) Q/ `5 j4 V& j
7 Y8 r  W" W( B2 }, \; U;;
每一个turtle的全局声誉都存在此LIST; l- W- u& ^2 M
credibility-list
- a+ E* x& q1 R7 {# V  y5 o;;
每一个turtle的评价可信度/ @( [: ~6 l, d
honest-service
$ ~3 Z0 c7 O; v! g+ \5 g0 c6 p) Gunhonest-service
% o1 ^4 k+ x% Moscillation
1 n9 I" P* C6 v+ c3 \) X9 @rand-dynamic# J: h* L  j! h
]
* D: Y' U4 k7 c+ g
- ^5 v" i* M1 c6 U7 I, Pturtles-own[7 r' U. L! t0 X. d! ^4 o- S9 X. D
trade-record-all
0 ?& h+ N: [/ o: n. m3 u8 W% T;;a list of lists,
trade-record-one组成
1 X- i$ u: d4 @* J  `0 j# C( e4 {& btrade-record-one$ [9 U% T  z/ v8 J- ]$ x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 X2 y' q3 H1 ]- w, Z
  K/ C, E0 k2 R1 w  l( A; p. p7 d;;[
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]]
6 z( k1 ^6 q& r4 ftrade-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]
$ H  k/ ~5 r4 x+ Tcredibility-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list6 P0 T) o, V' N/ d) l7 a
neighbor-total7 |0 C8 |0 k" z' Z) Q: s
;;
记录该turtle的邻居节点的数目
/ \9 v* N) N2 o- gtrade-time6 Z! h/ i% i  h/ d2 x
;;
当前发生交易的turtle的交易时间
- \0 X2 P7 ~% m# N. k( n4 Sappraise-give
9 n2 K# U& }+ n;;
当前发生交易时给出的评价" Y' S! O/ s2 x; j
appraise-receive% f& i7 c9 P( q9 l7 ^9 I
;;
当前发生交易时收到的评价  T( f6 P1 ~) c- c+ K# M3 U
appraise-time) z1 [: b. Q; x7 E4 x: J; Y& j
;;
当前发生交易时的评价时间. O, m& M8 i5 n# o  z& q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- K, b& P3 r9 I. [8 ntrade-times-total
3 z- l4 ^8 a! e7 p;;
与当前turtle的交易总次数: z% f0 W7 B: _$ Q/ L
trade-money-total
( V+ x! i2 }/ N% q;;
与当前turtle的交易总金额% d: G( I5 Q) u7 }; P1 z/ U
local-reputation$ P7 K% F* m! H; ]4 l' l- C
global-reputation
: N& c( P5 Y' f- f& Dcredibility
0 o6 R/ |, Q9 f( e' X1 u;;
评价可信度,每次交易后都需要更新
2 i6 O& B9 `7 ]  s# ]  mcredibility-all
0 P4 F. Z+ F$ e+ c) [;;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
- [- m- D5 D2 T/ H' ^* |( i1 n/ f! s) Y: Q
;;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
2 c  P  n8 ]1 y8 {/ ?. Hcredibility-one
, O. E+ V$ z8 E: C9 f;;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people5 i! @( N# h. G4 D0 {+ i
global-proportion5 t# q- T: v% i
customer
' Z7 l/ e$ X4 U% S% s0 V$ E# jcustomer-no! s) g- A# I" P! S% B1 T6 u5 J0 P
trust-ok
2 x6 X7 t1 b; w' Btrade-record-one-len;;trade-record-one的长度8 z4 y( j. S" O$ e  j
]) G; ?5 u9 d; K2 Y; k% r

+ Y9 E. |$ k# L, L% j& @3 W;;setup procedure
+ G3 P$ I8 B$ k7 I3 L! R4 W' b+ E
to setup
! o" q7 l/ Q' k3 \6 ^# o3 |, Z' V
  X5 N! K6 L9 m/ a! A% M, \ca

0 n: ~' k( F* K7 b
% S  e6 ]& E$ a; V7 Cinitialize-settings

1 N1 g5 e! ]% K3 b& n4 d+ z! F5 s2 ~+ n) m
crt people [setup-turtles]
. c. T- U* I7 }- g, A( L0 S. j

8 }( i6 K7 |+ g+ Hreset-timer
1 c2 r4 O9 ?6 h) G+ f
+ n; i! {( Y, e$ {8 ^9 V( [, @- b
poll-class

, Z4 t* G9 w  ^' C$ j4 Z9 L( d, X& O6 D& {; `3 Y
setup-plots

5 ]6 c) {+ X2 u0 p, R. i
. V" ^2 ^' L! r* A% Y7 f; b" vdo-plots
9 W) {; y9 I' T: P; l
end- z. e! L" W. }2 {9 @

0 I. t! O5 L- v. ?, G& `to initialize-settings# r0 y2 l2 O( W5 s0 a  n

5 x; \, d" ?1 I3 e1 e  Z/ v! mset global-reputation-list []

- d* ^5 }4 z* i: Z  S* v9 t2 @0 _  i( J
set credibility-list n-values people [0.5]

; Z+ x1 O2 [: ~- B8 E6 o6 M' }% Y0 K+ o, w. t0 W, z
set honest-service 0
' h! i% Q: x9 O9 Q( v$ W, m

8 }3 H2 T4 {+ fset unhonest-service 0

  o/ E9 c& D  q$ h" V; S3 M$ F2 E3 C) j. p; O: Z8 \$ l
set oscillation 0

( O7 K% W! c. I' B# V( I1 u. h
6 M) L: E6 i3 Q; }9 iset rand-dynamic 0
5 D: i0 e7 X7 M6 [
end
$ I0 }; [5 Y$ s+ c7 l2 l
2 r1 Z9 I1 r! yto setup-turtles
/ A  v9 Y8 Q) L) w8 T; L' i' a+ g" lset shape "person"! B- s& P% k3 E* ?
setxy random-xcor random-ycor
6 a4 v$ J2 \  W9 }: n$ lset trade-record-one []
+ k# C( d1 T6 _
2 ]4 o$ b  N* p; A  P' c* R* i1 d4 S/ A
set trade-record-all n-values people [(list (? + 1) 0 0)]
( W, g$ {7 K3 g: e2 ]; F
+ w2 Q- |' o, ^) o* N1 n
set trade-record-current []
& f& C9 \% C) _0 e/ o( Qset credibility-receive []
: N3 T: k- K+ q! x5 P8 Cset local-reputation 0.5
! d. U9 [& q& `7 Fset neighbor-total 0
: V  y7 M: V  sset trade-times-total 0" Y9 h7 n' _# Y: o9 X1 P: g
set trade-money-total 0( y/ l9 A$ M# J3 c- P, w
set customer nobody
: r8 F, Z4 D6 x7 z! y7 B; f+ Iset credibility-all n-values people [creat-credibility]
$ G6 {1 x* X9 [$ @% k  Zset credibility n-values people [-1]
2 T3 [+ S9 N5 q# Q) v- Bget-color  S  a1 ~! O+ [8 S' \- P
% j8 _: c) R4 m1 i, \1 N
end
  A; X  p/ [" \3 h! d3 u' M( q
' k: r. e3 f$ w- r# s7 \to-report creat-credibility
* `: B0 ~/ b  G1 hreport n-values people [0.5]1 P  o7 d! F. X% I' L( Q
end
* ?) e6 B: j# p4 F, y& c3 o4 b. H0 I/ \6 p# k" K7 s( O
to setup-plots+ P2 ~7 ?! X. k# ~9 {

1 L, w9 [, y: e5 E4 ^set xmax 30

" O; `) W! i! t
0 o0 b# h, E# m* c% x9 Oset ymax 1.0
8 [5 O0 [3 V) D' r
+ r6 }0 K. a3 d: p
clear-all-plots

: ?0 @- U, r* o  r4 v' H9 ]0 a$ q" M  c  S& n! H; l$ Z
setup-plot1

: H% A- {0 H) m* L. E# x% U: `. l. {  t9 Q" D5 d, o5 r$ t
setup-plot2

& O& q6 O2 l* s* H3 G1 \' Z( J# S( Y* e; L! }7 V3 t8 g$ e
setup-plot3

' F+ x; q7 ~% Z& Y# eend
8 u$ `( }0 I. G) @/ o& D
1 g$ k6 h) |- }7 s: A' N;;run time procedures
. s* O1 |2 G! e. E/ G7 g. K& ^* E6 t* A  ^) D
to go
; q3 E3 O: ~, ~! K
0 C. S" n, o- V. bask turtles [do-business]
# R1 v8 x" a$ Y6 A- m  I
end* B- v. p( W* Z* b
2 a% f% b! v9 ], C, Z
to do-business
0 R. T7 W+ l' v! e. @; S

- `8 i1 o0 ?( o7 z/ X; R. n8 l! L& s9 m2 x1 C5 [
rt random 360

& o4 i% K0 X% Z
7 y3 ^. N0 K3 |' ?fd 1
3 R  f& D% J' r

8 x8 M% A3 o* X' o* difelse(other turtles-here != nobody)[

' t, H' e* S/ L1 P/ E- k+ D. H' z, L- ]3 G- j
set customer one-of other turtles-here
1 ^- i* V" n" i

& t7 }( `/ o# j* Y1 t; _5 }5 N;; set [customer] of customer myself
6 z0 O& v5 R8 h8 `

6 N/ g! j3 W+ _+ A7 uset [trade-record-one] of self item (([who] of customer) - 1)
2 T4 c. C6 o' a8 K1 B# F[trade-record-all]of self
! P# Y6 c3 T7 D: D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' z& t- a, q' m0 w1 @* ^
3 B0 N% X$ S( f" Iset [trade-record-one] of customer item (([who] of self) - 1)
/ z, w, o' R- T' H. ?[trade-record-all]of customer

6 B: ?/ E' ~2 E' Q0 @* y
8 d3 f3 Q2 I7 g0 N! \" Hset [trade-record-one-len] of self length [trade-record-one] of self

: E2 k* H% r2 Y2 d. ?. X" W
! J4 _6 p" N% c( r+ lset trade-record-current( list (timer) (random money-upper-limit))
5 k7 T( g8 `7 Y, c

+ i; O) s9 @5 M- `4 v% F1 Fask self [do-trust]3 e! B8 |' P8 X5 W7 a3 v
;;
先求ij的信任度) B2 \4 F& o# C4 Y5 ]. R

: v( M0 F7 m, e$ ^2 m% hif ([trust-ok] of self)
( d' y3 a9 t4 y9 Y0 s7 [;;
根据ij的信任度来决定是否与j进行交易[
3 q3 d& j9 Z' J3 C; b* h+ [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) N) i$ {# I% y% z, B- t: J
- a$ m& S% W' r0 q# _9 r5 ^
[

( q- u! ]+ M! j; `) l! G; K3 d6 Z3 h- I0 g! n. @3 Y9 z
do-trade
+ Y; `6 D! x- i# ?
, k- D9 T' q& a# ]8 L5 m% M
update-credibility-ijl
$ y" N  h! s: R8 G

: c) t1 ^! }, L  t- m% Q8 mupdate-credibility-list
* Z; U, n) E  B# D8 f4 N

0 x, l8 W+ P1 \4 X
) s: T' C0 f) S9 y8 Q: Xupdate-global-reputation-list

1 |, m# H, ~, M$ a% Y% l8 W8 o
% t  E# s- M& ?0 Z# W" Qpoll-class

9 Q# i5 g/ z8 f. b) I& @  @7 s; t/ r
get-color

- n: f) H5 {% h- P
1 R4 ?6 H8 B( Y]]) G$ @" s# L- R5 A! K" x! f4 Q( `4 x

! Y' O- i2 ?1 [" n, m;;
如果所得的信任度满足条件,则进行交易
* x- _# V2 G( q; e5 i' [% s6 V; C9 U" t7 |( j* d
[
: N) D4 |8 y3 |! }9 F
+ B9 U6 u" I8 e: }  r7 |/ l
rt random 360

7 Y; j! j7 _0 P, }$ g+ p1 u
% p' t& H2 |8 {0 a7 r9 P( [( _. bfd 1

% |5 ^0 _' \$ B: [. C& K
( D4 O) C0 z/ W8 }" s' B]
; \5 U6 S& l1 G% f4 p% ^

  [! K% X- ~* m. Hend

' U  V" }5 U, W& j/ V# `
) \5 Q/ c/ @* n2 k" \to do-trust ' t/ f# }1 Z3 `+ |. q$ o
set trust-ok False2 p4 H! c! Z5 v7 g

- u, O- l+ o! H0 r6 ~

9 e) @; q- ]7 Q& [( o) v2 H& {+ Flet max-trade-times 0
( o* J( p; k: `' n) fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 I  r4 q, r& G# |let max-trade-money 0
  a) H2 ?4 M  a: L4 U; Bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# }( G+ X# V8 h, O6 q) [+ }0 jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ `7 ^1 @: X. ^  Y% l
! H8 K8 ?1 O9 u5 {

8 j8 j% \* r- ~& ^4 f/ Kget-global-proportion8 A7 x5 o: q* s4 C2 l8 z* I
let trust-value( Z3 k+ n' g3 m8 d, q
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)

: w+ |& [" \8 ~0 z! eif(trust-value > trade-trust-value)( X4 p6 ?6 Y, @7 O0 c% f
[set trust-ok true]
0 N7 Z( f& M- o2 s, P8 t3 n6 C. hend) \% O7 c5 \/ D) Y, y  ^! R
1 C; A5 L$ z8 y7 y" c
to get-global-proportion! x4 j/ K3 x2 A- O: e( D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- l1 w; B/ a4 F' h% k[set global-proportion 0]
6 Y1 l  K" a' z# i[let i 0- ]% x1 u5 Z! @9 ]( a" \
let sum-money 0
- A6 q, C1 ]6 t, Twhile[ i < people]% A' j0 p5 m) p: S
[- E2 _  I8 P: Z+ P
if( length (item i/ f: C) s+ i8 ]4 @
[trade-record-all] of customer) > 3 )
% [9 |0 v, ~2 z0 P! h/ O9 ~: ^5 ^
[' Y' G* |- d" K8 |7 R9 B
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% O- n- J2 R1 A' L: E) m
]
( ~3 k8 q, E, r]: w: g9 A$ p0 t
let j 0
( ?% [$ |0 o4 R+ c6 ^let note 05 z! O5 A) z; ~5 k6 L
while[ j < people]3 J6 p/ R% d4 p1 Q
[4 `: w% K* l) Z5 Y; \
if( length (item i. O8 M6 d9 _( V9 p9 N1 e
[trade-record-all] of customer) > 3 )
; v+ E/ r! l1 Y2 D2 t* V
[
2 L9 h: |" c, ?+ V1 @! p& zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 j6 O0 |" p9 j4 T, f: D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 k+ T; G& o" Z% M  ~# j, S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  q. [5 A, @" M# \8 D$ i- h]
' J: o. j0 z+ R+ U$ N! v8 Z& r]
: s6 U: P2 l( N' |# a3 C9 q6 I6 W5 [set global-proportion note
; Y* ^+ t3 Y' J]
* f4 X  U& l4 Y* D/ L) q2 Lend
9 Y2 u; [* d0 I) `; e* b; c. F9 f( X/ I& X4 T
to do-trade
) _1 m: H( u8 f0 I; U;;
这个过程实际上是给双方作出评价的过程
) n0 |( o: \. F" [# Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 l9 I- N- t5 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. c+ W1 |8 {3 b9 v7 J6 t. F4 [4 Z5 {set trade-record-current lput(timer) trade-record-current
4 y4 _: r" ~6 r5 K/ p( o;;
评价时间
2 A# P- _- `+ l1 eask myself [2 K  ?3 p9 N" G9 `: m0 ?
update-local-reputation
# L3 a7 Y) k6 d% a5 Q: h7 c, E4 hset trade-record-current lput([local-reputation] of myself) trade-record-current
* }. ~$ T9 w; A0 r2 n]  ?: k5 ?3 p3 k; |6 _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 w* i, G& y% D, d7 A- Z: ];;
将此次交易的记录加入到trade-record-one7 `* L& q" N& `, J$ _5 o* Y7 l) J- N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( J* x" P4 H, _" ~. z  a* _$ t. wlet note (item 2 trade-record-current )
% R  ~7 v# B! ]  C& M- Oset trade-record-current
  U" s/ x8 K, E(replace-item 2 trade-record-current (item 3 trade-record-current))
. v; ~+ Q4 c6 n! [: Y9 U7 c
set trade-record-current' r) G: X6 Q6 s' e  f
(replace-item 3 trade-record-current note)
- a% y) i' e7 Z& H4 ?1 v* k& x+ ]
& g3 ^' o4 j) j2 V7 h: Q
ask customer [. ?% k1 _1 ]3 C: b: `
update-local-reputation
7 U$ [- j  W% ]0 _5 [set trade-record-current" ?1 d7 e4 j/ ?5 [1 b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 E# u- G  O+ t3 Q]
8 f: J% f, y8 A- {/ L2 O& n4 p9 F# ^

9 B. c. y" ?, R, E$ \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 A* H: R* B/ m, H( O
; j  ~$ Q1 I7 X, x& S/ E( a! |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& I& K" t2 P( u- K$ j; I
;;
将此次交易的记录加入到customertrade-record-all
0 x8 P3 e$ d& Zend- I* c' w, T2 ~0 d' e

! C+ ^! Y& D6 {to update-local-reputation
; T1 p; `  q4 k$ U' b0 gset [trade-record-one-len] of myself length [trade-record-one] of myself
+ v  ]! R, N0 _' d+ a: x& \
2 a% o1 b- V- \# S: W% `, I8 L9 y. u: Y
;;if [trade-record-one-len] of myself > 3
0 ~& J8 [/ M' S
update-neighbor-total
) I  p3 M5 }0 g+ s" ^& E  v;;
更新邻居节点的数目,在此进行
! W0 w1 N3 h6 w7 Q, Plet i 3# P& g! g7 l2 I  O2 |
let sum-time 07 D  u; E3 Q; C+ g7 e
while[i < [trade-record-one-len] of myself]) E8 L+ h2 M% i% D* g6 ~
[' t, O. }8 Z2 c  G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" u: }" K. T2 X6 [6 ^( `6 k: |, M, d
set i# p1 q- M6 v! _
( i + 1)
: k  l) N/ o9 C4 X
]3 \8 m/ c: j, D3 \
let j 36 F* B1 u) z# r
let sum-money 0$ ]: z$ G/ M7 A: Y+ y
while[j < [trade-record-one-len] of myself]/ ?( h: e, R# E! }& R
[/ _- v0 K& o4 r+ s0 r
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)  V+ J7 L" d' C4 n4 _9 q( `
set j4 s: m7 _, D5 N+ W( W0 A
( j + 1)

) l% A0 ~' s/ u% e2 L]
6 b, E# [3 E- n- H3 Blet k 3
* c7 x  H$ x4 E) s2 Nlet power 0' @4 v6 B+ U8 |8 p; ~
let local 0/ Q5 ]; Y% W/ d) j
while [k <[trade-record-one-len] of myself]# \. ?! k3 N& O4 J  k/ y
[: ]' E+ @. l0 ?" O! E7 o6 Z+ 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) 2 l7 P$ R; L% Q2 k; ?" ^+ W
set k (k + 1)
' M8 x8 s0 ?( s0 P0 J, d]+ F  _# |" Z1 [6 A9 E: C
set [local-reputation] of myself (local)
6 F: k, a9 ?  lend
. n0 e+ i7 b4 q, }9 e- }: R# T# ^( b
to update-neighbor-total3 m7 |  Q; i) j8 e7 t6 v! W& K

3 `# E4 R4 `# M. U' @7 {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& i6 d. }0 _7 G
1 j; O$ W" n, Z& Q3 R
' D6 h3 o. ^- {* l0 E6 B$ o
end. ]& X- B' f6 v* @  ]9 k6 F
5 }2 M. r* c  X( s. `# @" J0 R! D+ E
to update-credibility-ijl 3 x7 d2 S$ h8 A' ?3 V. f0 A

- B) G5 P; I3 Q9 X! T% x* P6 F;;
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。
! t8 T9 i' v% o2 r8 Wlet l 0
8 j2 I1 G- s/ N2 A/ Vwhile[ l < people ]% L  O# h4 A0 h& r6 l2 s
;;
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
- c% U9 E+ J5 r1 S4 @! T# B2 O[
, ?+ s8 w8 A6 u: glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. ]2 n* v8 |! F- H6 kif (trade-record-one-j-l-len > 3)
, A- E7 E) X7 ~. S/ ]& T[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
# u8 a4 `$ t: W- B  {  ilet i 3
% V- p- @" y( G1 {let sum-time 0
/ A1 P# j% f) cwhile[i < trade-record-one-len]
' c* Q( z; ]( ?; B  i$ u5 g4 Z[
' E+ f/ ]. |0 S* ?% r& @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ ~4 h* u! C2 z0 v2 c5 {$ l
set i
: U5 ^: q  p; L; k% ?! L( i + 1)
; A- f4 U( l  h9 P- ?
]
. s- u3 d% [6 O1 @; qlet credibility-i-j-l 0
" a, J4 Y9 [# m8 i  o;;i
评价(jjl的评价). E) W# Z$ Y2 y
let j 3
9 O$ k& _+ f2 X2 c+ z3 Slet k 4
2 ?. t8 a( p, N! Q/ F. M' U  o8 Fwhile[j < trade-record-one-len]
4 [6 g+ o! f, Z* ^& ]0 w% M[% b1 i) R; {  m  R
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7 I* l: i8 i* z" R, L
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)
6 w2 j, P2 n; ?: q6 a7 xset j' d  j. o7 H- U+ ~/ M
( j + 1)

1 V* p* y$ @! O0 i]
" W; B- M! y! d# ?3 Cset [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 ))
: g& Z) n( M, ~9 @. m6 H9 G3 {0 u9 Y  G/ r/ O

( Q. i2 _# x  i2 ^. e/ F2 klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 M( _0 ?" ~% m3 i9 }- q: |;;
及时更新il的评价质量的评价
) H& @' D. f3 W4 y( A; {, bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" ~" ?# H" C! @( ]
set l (l + 1)9 Z* q* p; Z/ n9 ~; E8 N
]
: C) x, o5 H! i  L0 bend; H  Y, v2 n/ Y
& H8 S. d- X1 v! i8 W/ s; c
to update-credibility-list" Q  r- o" M3 W' F4 q
let i 0( b8 H; z/ M1 `; p: y0 Y6 {- ?5 T
while[i < people]! {8 d) I, t+ f' {) v
[$ s' s. ^: L! E' R
let j 0- R9 n1 \! z- m  e" h& N# w" j
let note 07 f$ ?# s* D$ G) c9 m
let k 0
; e/ S' S: l; {  A, d  x5 D;;
计作出过评价的邻居节点的数目
$ k3 K) r( j5 U2 }while[j < people]
9 T4 N& s3 K- o1 X' s[, C0 \% P5 t% I6 h* x& a/ e
if (item j( [credibility] of turtle (i + 1)) != -1)
. m, U7 @/ r$ _% O;;
判断是否给本turtle的评价质量做出过评价的节点, q. w: m2 O4 E$ g9 ~: D
[set note (note + item j ([credibility]of turtle (i + 1)))
. [$ c( ?7 J' ~1 ?' `;;*(exp (-(people - 2)))/(people - 2))]
- I/ p, V& ]  K6 ?4 `% i1 |
set k (k + 1), T: W# H$ e' h8 u3 Z% t2 r
], S# |6 P! c# |' N. \6 h4 t
set j (j + 1)
4 A( Z, L  \* U; ^& M/ C* c]
/ x! A5 X& ?: u) @4 Q$ Cset note (note *(exp (- (1 / k)))/ k)
7 y. o5 j. p9 [6 v  H3 y% }set credibility-list (replace-item i credibility-list note)
- u. ~' D+ w5 `0 j& _set i (i + 1)
2 F/ v5 t- h. t) J4 t]# W4 b; c2 ^2 S7 d1 O0 i
end
* h! ]0 Z; b  w; ]9 R
* E8 r6 q. @- \; H# s7 H& S( ]0 c8 Yto update-global-reputation-list* c' L% {* [0 u, |
let j 0% r/ `8 X& ], ]
while[j < people]* R- [8 c' h) v: D4 s# K4 C
[1 w) K' j6 d; W# q& U$ o
let new 0. ]  O' T6 \" P
;;
暂存新的一个全局声誉# g% n6 E0 v$ o! x1 Z
let i 03 b" t: R& d4 M1 j. j/ C/ A
let sum-money 0, A+ p7 Z7 z2 w6 e: p, V
let credibility-money 0& w+ F: n. J$ v! @
while [i < people]
* i9 k3 ^& x& G$ Q& Y1 ~[4 B! A/ ]( _9 G5 `9 N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) w. v2 J. o; }" c+ n. Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% T1 q! i8 \# H/ P$ h8 R1 Sset i (i + 1)
1 S6 R4 t! Q1 m. J- U]
. N- d' `# c& ]/ L4 l8 Ylet k 0  w: H; Y6 Z* A: D
let new1 08 D  i5 c; A$ V6 n, A
while [k < people]
- z; N, J& r9 B1 O, l2 U, `3 y7 Z[, C2 U, s4 }' \$ ]
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)- ?( |2 D" V8 w1 F0 l3 e
set k (k + 1)
0 Y$ N, B/ P# k/ y]1 a8 r& ~* r5 V1 u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, {  |& X- V% n3 _4 a& Eset global-reputation-list (replace-item j global-reputation-list new)5 I1 r- j- b7 K! h; H, a0 l
set j (j + 1)
; [. ^1 \) r. C2 i4 }]
" P0 i* Q; t$ |# M% pend
, Q4 B7 M# b1 I, P! Q; M6 D0 f/ H: n* k  X  K& ?3 J' M. J
' ~! z) I: n* {8 U7 z

3 U* M" Q, Z9 N' _to get-color% Y( g) J3 R( a8 l; f

0 z1 n4 V6 d9 [. f: Eset color blue

5 I+ {8 a  Y- v: K8 B  Hend
8 l; w; }/ K# x- f, {, ?. U  t$ y+ D- S* `% a. m8 y+ c5 S3 H. ]
to poll-class% J' Q! ?( H2 p& z- r! K
end
7 k- i( y+ y' M/ g, H  b5 k& p% y& B* t- y
to setup-plot1: H- ]+ g, ^, b6 _9 M6 }* U

9 |1 k- `/ v4 \1 g- I. D* Kset-current-plot "Trends-of-Local-reputation"

. }; r7 |( Z3 ~- H0 ?) x
. z# o+ x, q. ]$ l4 e  {set-plot-x-range 0 xmax

1 c6 \( E$ W5 i# v0 c2 X8 y' V. ]" m5 H7 J" E) M8 E4 L' q
set-plot-y-range 0.0 ymax

& W. z, P3 N, a0 [5 ]6 E2 {0 vend  t5 ~( ]: F- L' G
+ N" P) e: L* N' L% y( K
to setup-plot29 d0 t; r# S& J  d% L- y3 [

3 L& f0 n' S$ ?+ i$ Q" `  Q8 C: Nset-current-plot "Trends-of-global-reputation"

8 z9 ], q/ |0 ?! S' h" O
) k6 |% o9 h2 J# eset-plot-x-range 0 xmax

1 G* c7 Y7 A5 c
# I- `" l9 |$ Y( yset-plot-y-range 0.0 ymax
' l7 w0 s, v$ j1 G& }- i8 I% W
end
5 u! g& T' c2 ^+ N7 j( J6 }2 K
  s8 T3 M$ U1 ]3 O! fto setup-plot3( O# I; l1 }# k5 ]

) I* o( W$ @) t, ]7 _! xset-current-plot "Trends-of-credibility"

2 g1 x) c& y9 a  ]
. p* j/ O. ]! }set-plot-x-range 0 xmax

: N: g* _3 o! a9 W$ \( Z6 D8 g, z8 \2 g- C' O
set-plot-y-range 0.0 ymax
; v" K# J. l6 I( p
end
  B+ {( \& J4 \% Y* r
, Z+ r5 W9 }1 }$ a3 y  i4 S1 tto do-plots0 \  L: ?  s* w# z) d: O" b9 \
set-current-plot "Trends-of-Local-reputation"; T& {+ n4 L" T
set-current-plot-pen "Honest service"! u+ \, q( o( ^6 n" X% a* Z- J/ |1 i
end
9 _+ l6 d6 o/ f1 |/ y/ p8 n. d* A7 L* _: X8 S
[ 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.% _* b, A- _6 y4 g# n( A" c

. q2 z/ N2 M8 W, C0 i) `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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