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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:
  y7 r+ g; c$ [3 a+ j# q7 a  uto do-business
) Z% K* {, k- e- }5 X rt random 360( Z) D) }; a( h  X
fd 19 A% H) j/ K$ b# m3 z: J$ j& H
ifelse(other turtles-here != nobody)[  R( [4 m/ s0 F+ W! Q  A0 a% K
   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) y; z$ q% U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 }) @6 n7 K' B' T/ v; E% h+ ^' {   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" f5 n0 b3 T! Q. e' Q' C2 X  ?& X   set [trade-record-one-len] of self length [trade-record-one] of self
) }$ x" _# d1 m3 a6 A   set trade-record-current( list (timer) (random money-upper-limit))
: b# |$ s* h; c! W3 T$ ]5 U, ]- n
" G" \6 `& R- q  I. A- S8 `问题的提示如下:  E. W( A) d$ d8 q3 S; Q3 m
+ r9 E# d8 o/ {' C: U) }
error while turtle 50 running OF in procedure DO-BUSINESS
) S; i# O0 A0 b& t$ r7 G' F  called by procedure GO
, n/ }. J/ I- b7 G; S- _/ vOF expected input to be a turtle agentset or turtle but got NOBODY instead.& h! y! e! i5 B+ {3 D$ l5 |
(halted running of go)+ t& h, |, T; b& k# J4 g
9 Z, O+ d5 S8 t
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
3 i' E- g8 P: [0 A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
0 g4 Z6 O5 W, Oglobals[
( @: E2 D$ m* |1 ]2 G; Oxmax
4 R, a  R% {3 f8 {3 s8 mymax) G+ k# d3 b1 Q( g, E
global-reputation-list
3 r. }6 D/ \& [: M) O9 ]3 ?) K' `' n8 V5 w) M
;;
每一个turtle的全局声誉都存在此LIST
' L1 |2 Q3 d! ^6 gcredibility-list
1 {$ U) d: d( g$ b$ U5 |0 {( };;
每一个turtle的评价可信度* R# k" V' i7 U9 T7 u- X+ X
honest-service
& R1 h) K3 w( Nunhonest-service
$ J" K1 [6 m+ o+ }2 s  Hoscillation, H* r0 {# M1 ?8 k& U( ?' m
rand-dynamic
. p* W4 @: \' X  r) H8 o# g]" H# a0 o1 i6 r- e3 }; e: G
2 v. _9 D. j3 H- [) k
turtles-own[# M6 O8 T3 a' `. ~, ]6 K
trade-record-all
$ E$ G( ?) p2 [& _;;a list of lists,
trade-record-one组成
8 f7 ^: C3 s) B% W! s8 m3 G  z5 itrade-record-one( C& A6 a0 P) V- A4 o/ f4 x, ]/ h
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. L  I2 }" E: [9 `, K
( L; \" r  a+ C# u4 r;;[
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]]
9 X: R, z0 W3 M$ |  v" dtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]2 @4 n0 q. t8 {7 x; ?3 L6 b# I
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; w" u. }" }7 q* L4 e  G) e
neighbor-total4 X/ C4 g& ~# ~! O9 u! R8 r4 T
;;
记录该turtle的邻居节点的数目+ `) q# E) ?5 H6 l* }* ~2 z
trade-time' k7 o, B; j/ E* {
;;
当前发生交易的turtle的交易时间
. f& ~, `7 p$ `$ L8 Fappraise-give
; P" [: u8 M" k0 N1 W;;
当前发生交易时给出的评价
, ?" ]' r. z2 w+ ]appraise-receive+ S6 c% j2 a5 P
;;
当前发生交易时收到的评价$ o  m5 f5 k% U' f! t
appraise-time2 s3 q: V1 R6 u* Z* Q
;;
当前发生交易时的评价时间3 c4 u4 o3 |) i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( `4 ?4 B7 r1 s" e2 {
trade-times-total
! z9 Q6 ?& x  _; u! o;;
与当前turtle的交易总次数( e" }" G8 j$ D" h9 H5 Y  f+ k
trade-money-total; l/ u/ L( t# A8 u% B5 d$ Q2 r- T
;;
与当前turtle的交易总金额3 m  N# n: g0 [2 F
local-reputation  @. ~1 D& w0 E$ E; ]  F
global-reputation9 l+ L! h, t1 Z5 d
credibility% g" \- R% O3 S" |3 d: S& X
;;
评价可信度,每次交易后都需要更新
, w$ _7 ^) y  C: y% z; N% y  Lcredibility-all
. ?! k' F2 I6 A: j0 X% {! 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! [' E0 x( k. H! ?6 i* C/ i

3 N7 p+ Q* Z2 ?; a;;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0.57 T& P& c3 I2 ?
credibility-one5 H/ _4 j% w9 p0 r4 P& J
;;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
3 t. z( f" `5 A, k8 oglobal-proportion. R# n4 D& `1 T! N' B9 M
customer
9 Y/ G% f0 i/ ^9 T' I4 Fcustomer-no
9 D  ^' }3 u8 c3 Htrust-ok
. Z' t' |& ?2 [! g. a5 S0 I, I' Htrade-record-one-len;;trade-record-one的长度
1 v1 ^( a# _. Q9 l6 J) Y4 W]# n; z' _9 v0 w- X! Y2 T4 a
% `8 U5 y3 p' \: ~8 a
;;setup procedure
1 p7 Z' z# A) P9 W  \
8 {7 T0 i1 m+ H2 eto setup
2 u0 J' D1 d+ a1 `% h* {' d# ?  v# a
ca

: R8 ^2 z- {- W0 A' @$ j3 Q/ S4 X; z% N; `6 ~
initialize-settings

% ?5 Z1 W2 `# [0 S1 W7 ~$ O2 X
5 q7 Y) J/ ]9 R9 ~0 k1 `$ gcrt people [setup-turtles]
! w0 X0 X9 X, O; ^
1 P5 a! J& \) n$ j
reset-timer

; T4 N  G; T$ R) ^
% q' X" T2 }& O! A- Dpoll-class

4 b  P) @" v) t- z$ H, w! q9 e9 \7 I; z
setup-plots

  }5 B4 b7 G- B/ F1 |' u
* k7 A1 r, N5 Gdo-plots
4 G& d2 w. P# m2 |* ]
end3 e, {/ Q0 Y9 Q) k' e4 s; |
$ p' x) P% R4 H* P5 t
to initialize-settings) x9 z0 Y& L$ m

8 v: J5 z7 |+ c& [+ uset global-reputation-list []

4 g' n& c; V7 u1 L
" M) y+ T7 q3 C' P& H6 F3 E0 Aset credibility-list n-values people [0.5]
+ C# t) s" m' o5 K2 k

6 k2 r; m' \6 lset honest-service 0

  C0 q+ V( G0 J
. N, j, K7 j6 ?! }; I* lset unhonest-service 0

$ o  e7 L" M5 G/ q2 b2 g" P7 H1 p0 A. C
1 S+ {; k+ ]5 `. Oset oscillation 0

- a; R9 y4 c+ g0 o2 W$ @/ R8 D. x3 Z9 }: Z3 p
set rand-dynamic 0
: B  b" C- t3 [$ L! B0 ?  ]
end
: i  y% [1 Y- q
7 p9 Q: x9 u" V" p  B) ^5 u" B; fto setup-turtles 3 u' g6 h1 D* i3 y' o
set shape "person"
8 d# ~/ Z1 o3 V* \# n" |: Gsetxy random-xcor random-ycor
0 d' w) n! ?+ f1 hset trade-record-one []8 i/ k1 m  B: n

% }$ O4 o: o: \/ e. lset trade-record-all n-values people [(list (? + 1) 0 0)] 9 _  _! Q2 k: ~6 I8 S

9 \) Q) j3 r% p; [, ]' |; Aset trade-record-current []% o( H; [) M" z  e* u+ q
set credibility-receive []5 o3 n/ T' n" i( O
set local-reputation 0.5
! e- ?) o4 o3 L* X& Iset neighbor-total 0" T0 T" j( P3 K1 e$ D' g+ n
set trade-times-total 0; k$ f5 C0 B0 P2 |
set trade-money-total 0+ u4 P6 ~) n! I5 M  d% Q) O
set customer nobody. E. P$ r$ N6 H# K" ~
set credibility-all n-values people [creat-credibility]* I! W( D6 ?7 Z7 s
set credibility n-values people [-1]
$ v& |, G+ E- }- C. R! q9 N1 Gget-color
" E( b& s% l' H% Y3 k( [8 d' M5 M

6 C) ^+ Y: t6 r! D& Z+ ~. rend) v: |) X' G: U% i) C) R: H

; M0 @3 s7 k2 h" a7 ?1 C" z. K: I5 Fto-report creat-credibility
' ]5 G: `/ E9 _, Nreport n-values people [0.5]" E: z1 z& ?7 ^# T- `9 ~' h
end
% }" n5 L! h0 p+ B; E  T; w
* a+ _7 A3 y# I* Q0 {to setup-plots6 N- y- W* m# O0 w' q9 o: X

, ?5 u$ w4 r+ {set xmax 30
" [5 a5 I) Y; E, N; u& y! z
6 V2 r5 }# [5 c# P% x1 A
set ymax 1.0
1 H9 j2 {2 X# w5 M
0 R- F; q0 a. S. \+ b' {& V
clear-all-plots

/ K( C9 e% b. s  @  @& j1 O' C5 A  v4 J2 p6 K5 f; h6 K, _7 c
setup-plot1

1 t* N/ w  E9 Q* ~. X& ~5 k0 p' A2 p) Y6 |/ \9 C  p- P" e
setup-plot2

  t8 j8 b( Q2 {( e
4 a) |/ j3 @% r1 H# @$ Jsetup-plot3
( m6 v( Y: K# x4 a9 d! @- `
end! e* k8 }+ W  J7 V1 D# t! ]
5 I  A/ V) a9 N& C
;;run time procedures
5 I' p/ D4 }4 x- V# o
7 N# c' a; i$ h+ D% `to go' P8 l$ @" _7 T; r4 Q8 o
$ Z# a- E0 u* Q7 _, p
ask turtles [do-business]

) E8 W0 S; n6 p/ C5 ]end8 y- f  X' n) `! v. c  m. i
7 X  y) @" S7 ]( g$ v- I
to do-business + T0 W; c. v# t; }8 r5 w
5 O3 }) @- j; W; @
) M) j% P' ]6 S
rt random 360

; v/ A3 Z$ n: X* L! b. a: w7 X, Q8 Y$ q! M$ f2 i
fd 1

3 z( [( [* Y; u2 I$ G4 P# _3 `) H5 k6 Q1 J
ifelse(other turtles-here != nobody)[

5 w+ s' X' N3 ^4 u( O* H0 k; _) b9 ^/ T: P" t+ T% `9 y
set customer one-of other turtles-here
' q+ u+ Q4 m9 _3 O3 S

' L% F& F4 S: V, C% o5 S;; set [customer] of customer myself

3 r) I& z# [; c( z+ X+ s6 l; }8 M3 J5 L1 v6 V5 p
set [trade-record-one] of self item (([who] of customer) - 1), z, s. B6 l. O
[trade-record-all]of self
, s0 Y4 V' K7 g4 I$ W: q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  q6 H  B, a* I5 E2 h# ?; d4 B; F
$ I& w9 k* F+ ]! r
set [trade-record-one] of customer item (([who] of self) - 1)  U' N6 E6 o% f. l4 X- x
[trade-record-all]of customer

+ b5 K' h. x' p6 L* E: a( u. z2 @
set [trade-record-one-len] of self length [trade-record-one] of self

1 k9 M/ J/ h3 X) }* X! ?) L/ m
2 h% e, B  u) J) Lset trade-record-current( list (timer) (random money-upper-limit))

' K' x3 o1 F  t/ X$ y+ h1 s, g5 s
ask self [do-trust]8 k% s* V& {4 K- ]
;;
先求ij的信任度
6 R9 Z: E9 z( R" C3 E% j; P0 w  {$ T" v
if ([trust-ok] of self)
; f" b& W( O! L;;
根据ij的信任度来决定是否与j进行交易[
6 C/ g( Y8 Z/ i; G" T" B. w( R4 h/ Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" J, m3 x& B$ a* h
: l# }# N0 C+ y[

/ `* L* w! d6 i0 ~8 @8 E3 w
$ z- `4 ~- }4 z9 I) qdo-trade

2 x' D$ ^, p8 _) q
1 u3 Q8 x( ~) r- [8 ?( lupdate-credibility-ijl

! w( A" v/ j2 g4 s$ ^3 @
4 v* d; }, T/ v+ h: |- R1 Vupdate-credibility-list
( _$ K" z* [$ t3 S% n

& b3 Y" Y" B" G7 |7 J4 ~* n* U  C$ S
update-global-reputation-list

) V- ~' c9 o/ V- X
) h6 b8 m" E, fpoll-class
- G! I0 |/ m4 r# P7 x5 T2 G

& ~& k" C8 [, N5 Mget-color
) r' k; q! G  w& S( _2 f/ I  b% b
6 }* e  H* ]: |( @; a
]]
3 L; ~3 h' U8 k: B9 [; g, }. f7 y* g) r- H' z
;;
如果所得的信任度满足条件,则进行交易/ M# w3 ~+ Y# h) T$ X
6 V9 ?# N% E0 Q) W$ C, L' Y
[

9 o$ C/ i' Q+ D# k+ d$ _
% W. b1 ~% z. b3 v% \rt random 360

2 F" M" Q: V* ?/ v# l& C' d0 Z8 c" O" G& n& e5 \
fd 1
' c% s! x* F  ]  @7 i% j% q
, g! J1 Y0 e( i8 T+ _
]

4 x5 y- k6 D9 ]/ P& X9 u" V& {" R: D8 M/ {, x
end

$ n) \  ~( U) Y- i6 ]6 I/ b) s; n2 G% \/ B8 P, m! N4 o$ W
to do-trust
9 a9 s& U; \5 {! jset trust-ok False
% F& w. K4 P' U3 f% N$ V
0 \; b, U# \# h" x( g
8 f+ }- Z0 `$ D9 ?0 s. b
let max-trade-times 0- {) V- v0 K4 b, h
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% ?; S" w& ?: D7 r7 slet max-trade-money 03 o4 \, ?7 _# b" U) y! |) g+ _& B
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% N6 @, q3 Z2 Q! P0 N1 F1 slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; g; J: o8 [0 p1 Q/ p0 _2 ?. ~: t# O1 `5 a' c
# [7 G1 l7 I: D6 D. k" B
get-global-proportion
2 m6 r/ ]- \. G! blet trust-value7 S* k* u& u/ j5 K# f
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 Z2 C2 z' b8 Z9 F
if(trust-value > trade-trust-value)
; z& j# P) W5 f& D0 p- E[set trust-ok true]
* a- e* e# ?" u, y( U8 }4 V: ~4 d$ ~end1 A3 e; _3 u: Z. A9 \$ h

; m1 p9 _0 e; n& a1 e/ xto get-global-proportion
4 E1 E, d: m: M! _( ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; w, _! l5 N2 p+ |! G6 o[set global-proportion 0]5 \3 [) G# b' c! a
[let i 0
, z+ T& }$ v5 a. v4 flet sum-money 02 a7 M3 o) K/ c2 }5 ?: |0 ~
while[ i < people]
" s. K* h/ d4 K2 {" w[
0 h/ k. `$ Z7 G( J% ]! \if( length (item i
+ q/ `* _' ^. n! g[trade-record-all] of customer) > 3 )
" G4 |. |1 h8 C# P
[7 N' P" \8 x" k/ m3 k9 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% U) p' f6 P; a: {]
1 D$ Q* S% O" ^  z8 h9 s]- m9 i- X4 t5 h# q: Y* }
let j 0/ q0 i5 o$ w% _4 v/ i# I- f' g
let note 08 F. n$ X7 A0 T3 |9 O- E
while[ j < people]! s$ Q' q2 D* C7 n" A* n$ P8 l! E
[
- o2 o5 P# ^- k& W2 Y5 h. _8 A) ~if( length (item i( S& Z$ u" S+ q. A4 b
[trade-record-all] of customer) > 3 )
7 g) ?: Z9 U" y. u& ~1 O
[$ V% e% q! q+ N5 w5 _$ o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 A: a4 A7 m$ y1 y) t: y3 r# [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  Q/ X( X3 @% f! o3 g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( s! M. \# |6 e7 e, k, h]6 ~+ M# n9 a& D
]/ G* Y0 M5 A8 e0 ]; h
set global-proportion note; x) W" P1 [7 q, Z+ _  F$ @
]* s5 q% ~: j+ ?
end
! @- n( S4 \, ~9 T" A- Z6 ~; \% q, o% H6 d+ p8 J0 k* ?
to do-trade) o: r$ o: b' P: i
;;
这个过程实际上是给双方作出评价的过程. e+ E8 v* K% g, N# `* p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" C5 C+ J- R6 [' R! F/ o* w! m9 F' C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 I3 R7 n: v9 s1 Uset trade-record-current lput(timer) trade-record-current
: ]/ m# K$ s6 m9 q# ]/ P: p" J: S;;
评价时间3 O  e! f& V. W; Z
ask myself [
3 t. C7 {2 w5 a& \+ W: x1 d( hupdate-local-reputation% o$ V; g% @' N" a* _* ^( N
set trade-record-current lput([local-reputation] of myself) trade-record-current0 s& x5 G( c& d1 ^1 o
]  a# E; n3 h8 R) y3 z, J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' e, [3 a& ?* A( h- Y
;;
将此次交易的记录加入到trade-record-one* @! P. v' Z! ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 Q6 W* D3 ^' @8 w* y$ G( ^
let note (item 2 trade-record-current )
- ?/ e' N- M: U$ q# {. f" T' O' Cset trade-record-current
  G* q" W" M( F9 O& b2 u2 r& @3 y# f(replace-item 2 trade-record-current (item 3 trade-record-current))

$ U9 {" Q9 N3 U4 @) Gset trade-record-current8 a. C5 S8 n4 b5 v" ?1 j6 a1 h& e
(replace-item 3 trade-record-current note)
: X* m$ W8 ]4 q' C+ ?% C$ e% L% S9 \/ ^; b4 m$ Y% i
8 M. ]8 f& o+ Y# t
ask customer [
2 f0 L$ w, m2 m( ]( Oupdate-local-reputation
) h" x; U) C6 [; D, S3 k+ A( U$ bset trade-record-current- F, P$ z' `$ `0 f
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  R3 H* K8 U. o, Y2 g) G9 O
]3 d3 M6 w6 \+ p! W8 b8 F3 z
! {& R  a! R5 o2 ~8 c
, Y5 M6 f, ]5 G
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 N- D8 T+ P2 A# C& C$ G

" z! h0 f; B' v! I$ s! {7 b/ a1 k: N4 `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 R+ \9 D" s( Y  n
;;
将此次交易的记录加入到customertrade-record-all, V  w& X4 L6 }) E: G" j
end
; X$ w6 E& o# S# X1 q. j: }% V  T1 N5 Y7 q, B
to update-local-reputation
. P4 W7 n1 y. l- ]0 w5 ^set [trade-record-one-len] of myself length [trade-record-one] of myself
: i& [0 P% O. P' w# m- K$ a, f+ @9 G% R1 b5 m

6 {/ s6 x7 @/ h. u! r- i  e; I. t;;if [trade-record-one-len] of myself > 3
% V9 u5 X8 _+ N3 d' u
update-neighbor-total( o& G% A& y+ ^" N  n
;;
更新邻居节点的数目,在此进行
' Y! U& z" C1 l5 D& w8 {let i 3
6 o: U6 p3 @, rlet sum-time 0
! f6 ~$ a! ]1 A2 _+ mwhile[i < [trade-record-one-len] of myself]
; x: ^7 |- P4 F0 V4 f[3 g6 |5 w! n6 k$ K7 ]& g. i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# V& @3 X1 P; X3 j3 w: B/ Y
set i
# H3 u" z! s- s( N( i + 1)
' `% o) I% ~% a$ B  g2 @
]4 e, e) P  h% P0 h* M( A( K! c
let j 3
3 n9 k% G1 g/ U% `let sum-money 0
1 R: P$ t8 k. @1 r- Z( Owhile[j < [trade-record-one-len] of myself]. M4 J5 f1 c+ u4 u
[
  x+ `& o$ n8 N2 k( a$ bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# B1 _' b" Z8 c! X4 Iset j2 E, H4 _! T) W! _/ o2 F1 \; `8 C4 H
( j + 1)
6 J5 [. E. c4 w/ L3 N
]
0 T! E  c* O/ ]( o- e' Rlet k 31 J5 P& e! a  Y1 A' r2 Q" ]* ]; T
let power 0
. Z: |- z: x+ n3 E- n& J3 vlet local 0
; W; }, t6 G0 r! _2 m6 lwhile [k <[trade-record-one-len] of myself]& i& {) J# E0 j6 R. W& f  H
[* w9 X3 l" I: `! ~4 z
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)
) {1 I( l4 l% n+ Tset k (k + 1)/ s2 ?; z, K, N: ^. q1 H3 u
]" D3 d' e& p- j( R7 a* A0 f
set [local-reputation] of myself (local)1 b8 o* c2 r3 ^$ }1 U1 L/ g% l
end
0 Q8 E. @6 p: S# h: p0 n
* C2 `" D' T8 a8 N' t3 k" L$ gto update-neighbor-total
/ _' V+ k  g  _+ G! K# A
" ]$ ]- W3 `" v  qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- i6 y8 W& d2 _  j* V
1 K/ [; N2 W! |- V! p- ^
3 g; \' O/ V( {: }: m/ Y. O* G3 Y' R
end0 P; S! L/ n" d; y$ ~
; [+ F' f' w8 ^* [) v1 m/ _& k
to update-credibility-ijl - r0 J# h' f- m/ s2 ^* G

6 T2 W  c+ l, Z2 s! ]0 N;;
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。
: z( k/ _* d5 h6 U8 ]let l 0
6 A; j4 q4 A' F* ]# l1 Xwhile[ l < people ]
. p  G  B- I3 N" Q;;
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 q5 ?: y2 Y0 ~1 {+ {9 v[  R& J4 W/ c9 r$ B/ x) S8 g0 w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 y5 i8 i$ e3 s* s* {; R6 d
if (trade-record-one-j-l-len > 3)" b' t; t, z& _
[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
, Z9 w+ x0 Z  V  w) i& v- A# f& alet i 30 }* ]4 j( ^8 T; c8 x
let sum-time 0
5 I5 a& S. {; A( K+ gwhile[i < trade-record-one-len], V% a7 }+ g3 v- P( {, a" o
[
; a( k" V# w1 s% M" s/ Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& C3 m8 R; t. p6 |1 s6 ~
set i3 N# q) C1 G2 s- M" {3 R
( i + 1)
0 L9 l- @- S# i
]* y/ B& X* {% o( B0 R! \
let credibility-i-j-l 0
8 D: H, w! H5 Z: T;;i
评价(jjl的评价)" Z. r4 x' ?# }8 U% k
let j 3) x5 y7 a6 L+ h4 C3 ~
let k 43 @* S# E9 e  P# a
while[j < trade-record-one-len]
$ S* ]" g) E9 n: i6 ?[3 t5 a" L# q3 y& |; M& s& l
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- l, i% [# n+ _$ J6 W# e8 h; E5 I9 k" \
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)
. k, ]0 j% ?6 m7 Z# ~set j& w$ L$ d3 y. Q+ h
( j + 1)

" P* H7 V( q: ^8 u6 A; v( T0 ^' L- I]
+ V9 ~" s% D. D. z- e( 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 ))
( Z+ s$ l' c- w% j& j  i+ a8 }! o  \# t

& J3 B1 B; t& q4 }3 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! K. W1 s- F" N  ]' H/ `1 U! c
;;
及时更新il的评价质量的评价
4 Y2 y8 d: H1 bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ ^# Z$ u/ X; {( O
set l (l + 1)
' J$ _! |0 F* c7 K9 F  K]
, g( V" u) t) f/ R8 y- T8 Zend
, c; t! `. s) D) C) k* `9 @$ }5 t* |% N
to update-credibility-list
6 X% i3 v+ D, [. d& wlet i 0
- p0 ]. K. ?5 N  _; gwhile[i < people]
0 W# f; ~1 Q- }+ \[
; c8 b& p; @' Q0 U. |0 blet j 0
5 A8 W9 [+ b* Y% |let note 0+ \1 \1 ~1 m5 R; ]. w; V7 a/ f
let k 08 ?, A& D( b) X$ u4 E% V9 {: i  {
;;
计作出过评价的邻居节点的数目0 c" u! D8 u! i
while[j < people]3 z( l0 E: |- \8 G6 _
[9 J1 c1 T0 |6 K) m% e
if (item j( [credibility] of turtle (i + 1)) != -1)' `" g* R; a, a% S2 T& y5 t
;;
判断是否给本turtle的评价质量做出过评价的节点
+ n; Z/ P) v9 \) n[set note (note + item j ([credibility]of turtle (i + 1)))
& \" b( [8 v& p;;*(exp (-(people - 2)))/(people - 2))]
% U) H8 v; a! _: o. ]. X
set k (k + 1)8 F9 M! x3 g8 O; {: `- ^* f
]
& V9 v8 Q0 }) ]7 S- |; Mset j (j + 1)
* r1 d+ U' w7 G0 b9 E: H+ {]3 p- d/ G) }0 g0 Y0 [/ Y
set note (note *(exp (- (1 / k)))/ k)
3 ?" O, y2 w. B& `+ Cset credibility-list (replace-item i credibility-list note)
! M& p# Y9 G- }8 Pset i (i + 1)
" o' R1 |7 e1 a6 b3 S: b5 a]
) r6 d7 |9 T0 j* i( G- uend
) W; W0 _- L! j- x7 T
& h% s: E8 H+ X8 a0 _3 s2 Wto update-global-reputation-list7 I/ ]& y! m% I  D) B; z
let j 0
8 W; X+ R- k& v0 h% `while[j < people]( a( h) x* M* H/ X% L) @% P9 R
[- q2 Y( s$ y1 x7 q* c& S
let new 0
! n* l* b+ o  J' m  P: f) h3 D: q0 r;;
暂存新的一个全局声誉: ~+ r( g) \) S7 y
let i 0
6 Y: E# S2 \- T: f" z6 V* Slet sum-money 0
% q+ D9 }- O3 ]+ @let credibility-money 03 h7 d+ L/ D2 d) }. H2 }" l6 ?
while [i < people]/ K# |- Z$ D4 q+ }) l+ K
[9 ^( b& @/ @* h$ P& `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- z- j4 K& c$ X( I* y% P; X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) Y# V4 f& Y/ {/ Q
set i (i + 1)
; J; V2 |8 g% f3 n& `, [# {0 ~0 X]9 B5 H: J( U% g. x& I* r$ X4 Q
let k 0
* T3 E3 P% Z5 T& N$ Clet new1 09 `7 }, E# X  k% ~$ }
while [k < people]
) w( D/ Y+ i4 d[- a+ T. A, |' q$ g! K1 A
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): r5 K4 N" v3 f6 M% a. ~4 ^1 W
set k (k + 1)" S  P: Z& ^, e' ]* Y$ E9 Y- F
]
: O9 W# G! w5 Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( l& P* T, Z9 w- I& l: I, p: y2 f
set global-reputation-list (replace-item j global-reputation-list new)
. P1 t- z* b7 h+ d% h% d9 e* cset j (j + 1)# t, ~% i$ F. f0 r
]- c/ T3 ]- y: |7 Q% T8 L
end
1 a$ r, m- L0 I4 Q# p7 X) g9 w5 D# b5 ^/ |% r: ^) x* h+ Z

( t! n3 M$ }" g, `6 h( K0 m- p# ?5 _4 Q! Y: K2 b
to get-color6 R. o4 ^6 I: {8 y) |

& Q" P1 x" Y( ?7 i! D1 z3 @  d, vset color blue
- t" @6 {  G( Y: z0 v% a6 g
end8 p5 A* r9 ~( E  Z4 ]
! x4 m( K3 o+ T& S
to poll-class6 A: n% y. N* Y* b8 p1 C
end
5 b) c; f) R- Q( k  {9 n9 O+ A1 W" u0 ?5 R4 O7 C$ L% x+ ~
to setup-plot1+ {$ j0 Y$ K- T: u' h7 i

& h% {- v$ y4 W" a' lset-current-plot "Trends-of-Local-reputation"
$ r- X% A+ O  s. Q
% Y8 o  B! q2 D5 a& y6 c: V
set-plot-x-range 0 xmax

- Q% A* {0 X  S) }, `: W& x
- ?: o6 [& @" N; qset-plot-y-range 0.0 ymax
) _2 {) r4 U5 I/ S9 S
end
9 m3 C( W# |* a4 H0 ^: i
( L2 }# s: B% e9 fto setup-plot2( A  |5 M, r# p8 h- L5 B0 A

* t' F# j8 E" n. E: Y1 e8 P3 }% |set-current-plot "Trends-of-global-reputation"
0 B* s  k# r6 ]+ Q

( M" P. Y4 J6 x$ z! Yset-plot-x-range 0 xmax
4 j( W9 |4 J- T% H8 b
; n8 }* i0 ~' o8 u  `4 G
set-plot-y-range 0.0 ymax
. }6 I- L2 \% a6 h' J+ g
end4 s& Q& t6 i9 P( S2 C
, T$ Q9 }- P2 z# Y* l
to setup-plot33 D9 q3 w% X# J

+ u& E& K2 ?; ?: h) m" @: ?set-current-plot "Trends-of-credibility"
, r  z+ _: F, j) Q) |

' s) `4 I4 s* M/ L; a7 qset-plot-x-range 0 xmax

- ~. L. h- p# ~9 z) [' Z+ H: n5 S
. @' K5 G- p8 _set-plot-y-range 0.0 ymax

* }4 @3 O! u1 f: @* a( x; Q+ \end& A7 U& A' Y9 m: Z* x

' b% r* U' L) `7 @! E1 _4 A* Qto do-plots6 W" a% a' m, [; U$ R, N' w
set-current-plot "Trends-of-Local-reputation"
9 A# y0 V9 N4 Mset-current-plot-pen "Honest service"
2 e, }' A1 h1 L6 ?% H$ E- `end( u) k  Q! ^5 G% R
" Z8 H' S5 R! c5 W: F9 {
[ 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.0 S( P! l$ x/ `. i
6 n& H, r5 F* S: W9 n9 o, g
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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