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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:: q  q' O# K1 n2 p* O
to do-business
7 r8 l3 F# E; x7 P% a  \7 V2 O- s) F rt random 360' C; i+ l2 o! x% V2 a
fd 1; P. D' R8 k0 o" s% `
ifelse(other turtles-here != nobody)[
. b7 N; q( `* v; Z! ~   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.
5 Q6 t* g+ `, X5 d* e* C& v   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      I/ P- {9 F+ z$ ]. P: e3 l
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; n: _$ r* C6 @5 |
   set [trade-record-one-len] of self length [trade-record-one] of self
- F0 r. B, A5 r   set trade-record-current( list (timer) (random money-upper-limit))
) z8 F4 l% K2 @; f4 `4 i! a  k
3 D! s  J, A: b( v问题的提示如下:
7 {0 A- H+ t# _; W0 N* H) s+ d. ]: c6 ]
error while turtle 50 running OF in procedure DO-BUSINESS6 M% [7 w0 [7 B; b
  called by procedure GO
3 a5 P  K0 j, k6 E7 DOF expected input to be a turtle agentset or turtle but got NOBODY instead.
- s. p# a* u. D; ]+ N% D
(halted running of go)4 f0 F) O1 i: l! P$ ^

" U7 V0 K- b& ?4 s" O' V5 I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: O2 A/ ~8 G; N
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$ Z+ d2 S2 ]+ o4 b
globals[
" f/ d% U! e% n# c7 Fxmax
0 p8 M- @+ e! O1 M/ cymax
5 o2 N2 n9 {# t7 n  Y5 Qglobal-reputation-list
3 o; a1 @( g" O5 Y- c- F$ p4 N: `& q' i
;;
每一个turtle的全局声誉都存在此LIST
# l9 A" V4 l  R( z& T5 fcredibility-list# `6 ^* q' f% D$ c
;;
每一个turtle的评价可信度
* T2 g+ h" B: Qhonest-service1 `1 y8 Q% n* n6 e
unhonest-service
( F, O& M- a  m. l! K$ U! c/ V. Noscillation& \# V, o3 e# [9 Q) f5 D
rand-dynamic2 |) a" w/ U$ a5 u  G- x
]
) l  y/ W: N0 H4 b7 S5 c
( A, q; n1 c9 y; H9 M# oturtles-own[
1 x0 x7 G  i: @  Gtrade-record-all1 V. h) z+ `; E% z8 j
;;a list of lists,
trade-record-one组成: W8 R, @3 @1 S
trade-record-one
  ]& W$ O# K& u1 N$ 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/ _4 }# n* l3 \4 F
+ [9 |: g) y; T' R0 T4 J' q+ z
;;[
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]]
4 W6 N8 M+ `7 ]# c) O. ~* X4 ?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$ X  B. Y8 j- W+ {  h8 I) H
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- Y) H2 g# A$ j  h* E1 C
neighbor-total: V5 r" h5 h7 ^2 `3 n2 N, R* J& f
;;
记录该turtle的邻居节点的数目5 ~( V; h0 L( y# q( i! U
trade-time9 u% F2 |* z1 p7 W* J$ `
;;
当前发生交易的turtle的交易时间
/ J9 P! s6 R5 c3 O3 h* G- L- k' Sappraise-give. |+ c. u+ W+ Z8 p9 A1 ^
;;
当前发生交易时给出的评价! z' V! H# z$ Z: L- s
appraise-receive  Z. g/ o  y# o
;;
当前发生交易时收到的评价0 D% \/ n! u7 m- r( ~) m  l
appraise-time% U- P9 l  Y* i  _
;;
当前发生交易时的评价时间" j7 ]' c5 a5 D. ^' X
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 ~' K  X/ K. L
trade-times-total
8 ?* X; G+ k% P; E2 r;;
与当前turtle的交易总次数
. O5 }& [, X; x6 N3 E' ltrade-money-total, J( f" e2 M/ F9 @$ A" {  T& M! y
;;
与当前turtle的交易总金额6 u/ m" v/ Q4 h5 O
local-reputation
, t5 j: l6 l* K! W9 Aglobal-reputation1 s  P$ r0 {* Q# Y  H
credibility
! B* S. r' t9 y# ~6 v4 x$ Q) y0 n! B;;
评价可信度,每次交易后都需要更新
5 D! _) n) b9 z9 ocredibility-all" W7 z/ i+ Q, \2 z, F* g
;;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
* R- ?9 W" |7 `+ U. t3 H6 p3 c5 O* @5 n+ a4 L6 Z9 w1 W
;;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$ b5 H, Q+ C2 K7 L  E! |+ Z: c' A: T
credibility-one6 u! d% v1 ^; j% `/ Z" v8 {
;;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, d4 M+ D+ V* r; o8 @, R$ e
global-proportion0 @& R* l! ^4 I  h+ q' b$ X' ~3 t
customer
7 m# g2 Y4 T6 F1 N$ [7 I! F+ dcustomer-no/ N0 g4 D1 b0 {2 d9 }
trust-ok, }7 Y4 G8 w* W9 q' `. J( c9 w
trade-record-one-len;;trade-record-one的长度
" Q$ Z- z" W8 M]
' K% Y' r; ]9 o
  C+ h$ j9 h6 {" ~+ J5 Q) Q: q;;setup procedure3 \, d  m2 U$ G! F8 m+ F& V1 p

/ \3 u2 K$ y( ^to setup
7 l3 i+ J4 F, R9 ^
5 P5 F$ ~0 ~7 M5 D' w. \ca
' P) i) N& V( f7 F: N0 o

$ K; K- f+ y2 w# {: b/ Cinitialize-settings
6 ?& K* F, P: }$ @

; K4 I6 T' d4 qcrt people [setup-turtles]
7 D0 l% P2 _$ h! J* D; x

. K% c' c/ _. Q1 _* xreset-timer
: y6 v$ E% h: b" `; u* d+ V+ C

) q2 I' ?. k' l4 M9 x# M/ B( Y/ ~poll-class
3 \8 I* H$ l+ q+ |" ?  a

4 I- @$ J# j% Msetup-plots

& y9 Z8 t; g5 L
1 ]! Z5 D6 D2 B$ f/ b. j5 Xdo-plots
# M) p9 Q' Q: N; w) K
end
; C# N( n9 c0 G  c0 Y5 y/ b5 f! e
3 a8 H+ G9 ^0 q( w) h4 oto initialize-settings
& a" z0 v3 h8 Z2 K, ?
7 q7 y2 g! V# v3 r) Zset global-reputation-list []
, }" }" f. R: f9 W0 A
7 E6 g8 z9 _) ~, }0 a, [
set credibility-list n-values people [0.5]
$ _' _9 |/ o; W! q+ k1 `

4 b, M4 U0 [! Aset honest-service 0

8 r6 z. a/ x4 p1 b, n$ {4 k
9 m* o+ k! F( D0 Sset unhonest-service 0
) m. e  H0 Q+ a

# g  e+ `+ Y% M( A6 Q8 Z& Hset oscillation 0

& w6 Y$ k! f9 b. E, f0 F
$ b8 \/ f* @5 R0 g* c* ^$ m9 b: `set rand-dynamic 0
+ r, t" y2 r' H- J
end
: O4 [+ @" P, [% s& p3 `# F
1 @- M: ]& N7 u9 A1 G* h- Lto setup-turtles
( s' [5 ]( V" l6 _* v$ I4 l$ }set shape "person"
' V- l5 [" f  b! Msetxy random-xcor random-ycor' j9 x+ h  ~5 t) ]
set trade-record-one []( F5 K/ E, p2 `) b# S) x

' C2 ~$ k/ J. s( S" Dset trade-record-all n-values people [(list (? + 1) 0 0)]
5 F: s% H8 O* C. G  e# _/ M  c7 R

- I) a: s5 O: ]set trade-record-current []
/ K5 [. h& a1 R8 @: P1 Cset credibility-receive []
; z4 x/ D/ t' j* a  eset local-reputation 0.5
' U+ _3 I. p  A+ rset neighbor-total 0; y& @0 C3 |+ t3 R) |  S$ Y$ h
set trade-times-total 0% V! ]" y  j2 t! b# `' u* b/ p# E
set trade-money-total 0
& X( |) j- c3 G4 k8 Rset customer nobody' I  K' \3 `* G( Q6 [5 p, `
set credibility-all n-values people [creat-credibility]
0 M# C$ i; h5 w. o& Wset credibility n-values people [-1]
* @& E; |, q. K% j; U* d0 Dget-color* Q7 K5 |5 X# I% n/ h" w. Y

2 O% e& L+ p" O- yend4 l4 m, B8 j" _" h0 l, a

5 M$ C( E$ {/ p1 z. @to-report creat-credibility
' R5 ?% F. t$ w6 V  u5 e. ureport n-values people [0.5]
0 Z% D- {7 u4 \* fend
/ @* ?5 _- B2 c9 v$ Y3 `# O5 G$ U
to setup-plots- S# M9 Q0 w3 E1 H3 [1 T" Q# c

5 m# J! T. ~9 Xset xmax 30
5 E8 @$ A+ G4 q- m, E
+ q" B) [: Q9 s" D4 Q
set ymax 1.0
8 t* f2 X$ a: O, A5 s

" O, Z2 i1 c) d1 P/ f3 P5 ]- o+ gclear-all-plots

: m: A6 z6 g7 z  r4 r" J
+ X7 D( M/ x+ P4 N% ^setup-plot1

# E% [8 D- o2 q" n# j  g
- s! e; ~+ J8 g4 L! ssetup-plot2
& j6 C. s7 m' p6 H6 n9 E
3 z4 c( U. F% ]
setup-plot3

# i! S' ?6 N( dend
/ A" x9 a" L% ^
) k- ?5 R4 Q, p  _# };;run time procedures
4 x# D( N$ s5 L& a! V4 I
" e4 ?  e) J- _' Y) x! Cto go
" @: R/ n8 H. z) n4 i
* n0 P) Z! [7 k5 _( Q# W( M8 m5 |ask turtles [do-business]
2 W+ K2 R: o: Y. V! ?% R- x3 c
end
3 \4 u6 d2 E; _, ^/ U% J1 B0 ]$ y- ?- Q+ ]  F
to do-business
3 ~  `& l) P& C* q5 M  i  ?

# q# P. Z( z. f9 \; Z8 @4 Z2 M" n  F* Y/ g
rt random 360
% ?2 C3 \  |* l0 P2 n

! U. W! R9 q# ?fd 1

3 G" y2 R2 d; x; D! B. r! t- q
; W+ W$ f5 Q5 M2 [! tifelse(other turtles-here != nobody)[
7 S- B; @- Z- e7 @8 R
3 e+ ~5 |! A. }( J7 x3 P4 y/ Q
set customer one-of other turtles-here
3 h2 j: d  i: p- F& }
1 p- C5 ]! b# E  l# L7 L9 |
;; set [customer] of customer myself
7 V/ B# \, p; k& w+ \

& Z2 E! M. g. [/ dset [trade-record-one] of self item (([who] of customer) - 1)% v+ L8 o, r. J; E
[trade-record-all]of self
0 {2 J) R, b4 k6 o( l8 \: V( D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; g7 @5 K, Z0 Y
" s- t8 }: R! U
set [trade-record-one] of customer item (([who] of self) - 1)) R$ D4 l3 }/ F+ L. a. ?5 }$ k+ ~
[trade-record-all]of customer
# f0 Z4 Y( C1 |% R, _
% [- h- H( G3 L( g$ o4 ^. L
set [trade-record-one-len] of self length [trade-record-one] of self

0 N2 H7 Z4 A* J" J
9 M- `+ b, J7 q+ k+ |# ]set trade-record-current( list (timer) (random money-upper-limit))
. x& r* R1 o: A0 `+ _$ |

; C3 P! i8 G* Z1 cask self [do-trust]! {& z7 f0 l) r& P
;;
先求ij的信任度
  q7 Z( D& I5 g' N8 n5 A" a$ J/ k+ h( y; I8 C: n! ]8 T9 }+ `
if ([trust-ok] of self)
3 A" t8 Y. x4 I7 p; ^;;
根据ij的信任度来决定是否与j进行交易[
; U# T* |% H0 K! x5 rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: @' ^* n/ F5 H" Y% U! f+ Z* h
4 x8 @1 h; b+ ]& X[

& }. y! p% |0 ?& G. j
' Q+ l# k; r% e: V: g8 ?do-trade

  P) R8 X5 e8 {5 ~$ Y, M( n8 Y) ?- Q+ X& J" x9 u4 n2 |
update-credibility-ijl
" Z8 {9 s9 ~* u# Q5 C3 |
/ c0 H9 y) Z  N1 J
update-credibility-list
" g  B- b* c: D6 U! o& ^
0 m1 \3 ~" z7 q' j" w3 b+ k

. `( |. l1 L+ J) }6 supdate-global-reputation-list

+ R+ m4 J, p+ u! u5 w8 e
: k3 c  x) ?5 o; @: fpoll-class
, M- }: ?7 x, ?' }0 q" u
5 a' M2 i3 ~' `" O
get-color
5 _- Q7 p" P/ u$ f9 z: U2 z
2 V, I  T6 b7 a; H
]]
3 _3 u- U8 M( r- b4 Q4 {8 w0 b& R/ u8 F  @6 e) q9 R8 n
;;
如果所得的信任度满足条件,则进行交易
' _2 u. C2 D3 g$ z0 n0 z/ Q: n9 l
[
( `9 |' {% A1 I# g) |
- _5 [$ n2 ^1 v+ D, Y& c% h1 M/ ?
rt random 360
) }* q! C: f& |1 b* h
% u7 F* d# I' v6 n$ N& J  a
fd 1

0 b' C) S- o' i; j! w1 T- w1 R! r8 |; |; e) r1 S
]

6 u9 F7 [9 H$ O9 C1 B3 k; t- b" [) d% u3 _7 L% c
end
0 F6 [3 A2 S% p0 t+ Z

3 z9 I3 D) X- g. E4 Nto do-trust 3 w/ j: y* G' e  z5 b
set trust-ok False5 O) E* A7 O" z' x7 b; J
8 T& `5 q: @( ?, Y- i+ i$ V

$ {5 B+ E. o( S! {1 j/ H$ x+ J2 Vlet max-trade-times 0" i. y8 m* U8 D* }* H
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 [+ D7 @  o6 C; ?let max-trade-money 0- r  G( u: U; e6 J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. A' G2 N' U6 I* m9 [: ?. u) W" F% J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ d+ d: @1 j" Z

8 C5 X  D) Z% ~& k  j: _, R

8 ^, y3 o! w' N' ~get-global-proportion
, M" S4 I* t4 O: q' Clet trust-value
! U" a  E* @% J+ D& r1 i3 Glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 ~% n; e/ U/ ~: @; H' K+ Kif(trust-value > trade-trust-value)
) |7 D. z: F7 U' v( E[set trust-ok true]
+ c$ L9 y% d: A1 g/ w& v1 [0 Hend- \* p! K  b5 F  T* o7 s

. G. S( y; O5 {5 ^- jto get-global-proportion
$ d+ O3 b6 Z3 g2 B: v% Qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  C6 ?! M( J1 O
[set global-proportion 0]  e9 P0 W; r1 X  i8 S
[let i 0
! V4 g1 j' t! E: xlet sum-money 0
5 f/ X. c! t7 O4 z; ~& d  f+ fwhile[ i < people]# ~3 O% |: t4 ]& E
[
! ]/ b$ D/ j) @4 o/ jif( length (item i
# l1 ]% F# D! x8 P8 ][trade-record-all] of customer) > 3 )
' z  h: {! N$ ^) {7 ]  v2 L; i: t) d2 o
[% W. @4 O' a6 v1 B1 B
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ o; ]. l3 y7 f$ a/ C  P
]2 L% ]$ \0 E: Y& X
]
7 e( w4 N2 V- I4 Plet j 0. C" _% F% O, u! t# f4 l, f
let note 0+ g5 e# {; A. U% J  Z
while[ j < people]
; M5 M. h! x% k% @[
7 C  L# a) d5 u4 zif( length (item i5 |  W) n8 t& L9 H: x
[trade-record-all] of customer) > 3 )
9 b+ p( S2 [/ ^* C
[
) W2 g- [& G; r2 @, Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  j1 |0 Z4 U3 r3 y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. u0 O# d9 I$ S+ ^7 H7 C- I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% j$ b6 P1 d' L7 H$ L0 m
]
& P/ _0 J+ r1 ^* ]]
9 q# w' ?- @( F; y! f. ?5 i+ Mset global-proportion note6 m6 q" V+ z/ L3 v" b* P& l  P: B
]7 x/ {+ P( v$ O2 u: ?3 W% w8 u: w. I9 w
end
" d5 J5 O) T, N
/ g* m' e/ h! `to do-trade
$ \! p' t5 R- j1 R;;
这个过程实际上是给双方作出评价的过程+ e# Y4 b- n% K! S' N# B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" G  @4 i; T4 Z% q4 X: Q! B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 o- ?' c  I: T1 B& z+ M$ v& H/ m5 X
set trade-record-current lput(timer) trade-record-current8 C7 m( U7 e" E8 R. n9 U( Q
;;
评价时间1 R) D/ e) P1 q3 r4 Y
ask myself [
0 q+ ^1 O8 \+ `2 ?update-local-reputation3 I5 ^  P6 O; I# p4 j* _: J( D; D' X: S
set trade-record-current lput([local-reputation] of myself) trade-record-current2 m  |* ?& j0 s' X$ d
]8 ^& k- J- |' }+ s" p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 P: I. V4 X! U% M" u5 V: G1 r
;;
将此次交易的记录加入到trade-record-one
8 ~+ R# Q3 T" S. j1 k* wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 H6 ]- F5 P0 D+ {7 W1 T
let note (item 2 trade-record-current )0 J/ o) t! |: U: I! k
set trade-record-current
4 O# p! r( l" l: n(replace-item 2 trade-record-current (item 3 trade-record-current))

+ e- G1 y, u: }9 D6 eset trade-record-current8 c) ?1 V6 l. r8 K' M: o( O9 q
(replace-item 3 trade-record-current note): n( r$ G* R0 L6 z, _, _

0 R0 o$ i1 n  e# B) Z0 I. ]2 c
3 y! a" M% {; w& G
ask customer [
6 o5 A) D4 ?. ~- _8 A, A  }update-local-reputation
0 @6 {- \( }" t: n/ m; E8 L4 zset trade-record-current
1 M+ u2 Y; E+ @& x  Y  q" ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  l6 H3 j, s8 n2 D# E, S]+ N6 z( @, S. Q3 e
# d. K' P( k* N0 \4 y$ ?+ y

- l3 q4 v0 D  |' f3 ~: \$ Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 V) w; o' E: g$ r5 r" U

% U  ^. J+ h/ ^+ h( i1 Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), Z2 d' @3 y* H1 _% @
;;
将此次交易的记录加入到customertrade-record-all
0 [+ u" p7 d8 C  N! F1 x9 Xend
7 A$ v0 n7 K* ], t& r% @; o" H' y  d  T! J( k/ T
to update-local-reputation
1 H. f) [; n/ Aset [trade-record-one-len] of myself length [trade-record-one] of myself# Q2 O/ @+ N1 t* p. w$ s
! P: \- z. F$ v5 O  f

- F. z# x$ J# ?4 ~# L;;if [trade-record-one-len] of myself > 3

" x+ A' C+ ^9 Y$ }# f) ^3 Cupdate-neighbor-total
" O+ T- f$ `% Q- T0 c;;
更新邻居节点的数目,在此进行( ]6 z$ j* l7 r$ ]8 a8 _
let i 3
( u: m) b1 D5 A: y' ~4 {# j! m6 F- G# Rlet sum-time 0
. `/ T0 f( }! _' H+ Hwhile[i < [trade-record-one-len] of myself]5 H# `0 F. t' j) m
[' x' A+ f6 d5 B# C
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): G. h: e' s  `6 `, t
set i) ~8 S; l" F. s9 Q$ o
( i + 1)
  f2 P# m: ]  j( l! z# R
]! I& x# E$ u/ ~; o, z) q
let j 3
$ V1 P& f2 I9 ~" \8 W' nlet sum-money 0
. i. q/ S6 D/ K% k7 A2 nwhile[j < [trade-record-one-len] of myself]" j0 S4 Q7 R& ~0 [) M
[
  O5 I" I: M+ c) Z1 |5 [2 ~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)
9 ^/ Y( k# g, V- N# ]7 Eset j
$ k; Z7 I5 m4 T( j + 1)

& c, M( w. w1 i4 A; u3 ?]
4 w* I: |( f  Q& q9 e' Qlet k 3
6 v; r: c6 ~) ^+ i: d% \# Jlet power 09 I+ \8 c1 [3 I( c% O  P
let local 0
% D* q* h( y7 M( Y$ I/ bwhile [k <[trade-record-one-len] of myself]1 |" @5 D) t$ k2 h3 F
[
, `: I. k" w1 rset 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)
6 Y: Q( z/ t8 h0 v5 r( Wset k (k + 1)
$ D6 o% o; k' o6 @]
2 y* h/ ~* `5 ?4 sset [local-reputation] of myself (local)
. y0 D: q: A0 {end
" Q/ B2 z; f: m* R' v! i7 Z
3 Q% m5 h& ]' Z: I. u; ?3 r& {to update-neighbor-total" e( N9 f; ^& @8 }
9 f1 J5 y8 U3 i, n( x8 `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% M: n3 E' _) m
/ Q! \# B  f6 x" t7 G6 q
" F# R, A% h3 l' `' }- C
end
1 w5 v# {- h$ d4 q- X5 i1 D1 d  @* A4 q' ]: u; I
to update-credibility-ijl * ~# Y1 i0 K/ S, X/ h$ E

+ p! r$ l4 S, I9 H: m( T;;
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。
8 J% g# E) }2 P" x8 o* x8 D8 ]let l 0; O% J2 h6 F7 ^- P. Z2 [; b2 \* F
while[ l < people ]
0 U1 H1 u& ?$ U5 v/ \6 Y;;
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/ ~$ x( V. R( ]7 Y( ]' i0 k* L( g
[' q2 y/ n/ f5 \' X2 h" j! j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 z% s; m( d3 ^if (trade-record-one-j-l-len > 3)% D/ v+ i$ @0 V6 w9 J; v
[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-one9 ^, u' j  n9 ?+ g2 R$ n; \" U! Z
let i 3
& J) E7 P1 ~' ^$ [. Q) Blet sum-time 0( ^1 s1 ^. p. F+ c$ X% L) z
while[i < trade-record-one-len]
+ I$ j6 o& b( K[  \7 I6 r$ }' o7 L0 l0 i
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  m0 R9 K( U  B/ X  G/ S6 n
set i
) ~+ Y  f- h9 ]1 h6 ^( i + 1)

4 q/ V! c- y3 ^- p( Z) C]
  H: b" u4 n: c# p1 l) Rlet credibility-i-j-l 09 r4 P# O* K7 [2 b
;;i
评价(jjl的评价)
3 m/ k1 g* a! T' elet j 3
0 ~8 m0 K; Q$ c+ @let k 4) o6 v0 m9 P, V$ p# R! m- l* G
while[j < trade-record-one-len]% L& C1 V# Y" o
[& }- D' ~) n7 p( [
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; [' \; k8 t  r7 Dset 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)  s* h. ~0 U6 Z
set j$ I( \, D) L0 w; b& ^
( j + 1)
% v! {( R6 k7 A6 {, v% h* l
]
; N4 W- M' o/ {) ]' |1 l( [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 ))
0 T8 Z% U; C( I  J2 x
5 L7 o* H% }4 d* X* Y
  n$ F$ X. G/ t3 s8 w' i/ j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; J2 U8 Q* A& S3 o;;
及时更新il的评价质量的评价. Z+ ~0 L  `  i8 j# Y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& k: x1 B1 Q! g2 R- c; yset l (l + 1)
' i9 C0 P8 i; S. B: r, S0 d( D]
- n& k" E* a# {# aend8 w5 L) ^0 V1 e) M: `: Q$ V" i' N

" J  L, U6 j6 Q' a; |to update-credibility-list# N: v9 a% `3 y- _; T
let i 0/ e: A# n- K  ~0 H- D. U
while[i < people]
; H$ G- N2 S5 W" Y5 L2 t[
; _1 X$ V. z1 [: z' Elet j 0* a+ g9 B4 I4 v+ a
let note 0
/ P+ e4 Y8 T: O: v1 r5 x. Dlet k 0
& g" {! s% R! W;;
计作出过评价的邻居节点的数目
1 `* Y5 w5 F) l0 o/ Cwhile[j < people]- I" A& m+ @- p7 x
[! }* `) Q& [/ ]# P
if (item j( [credibility] of turtle (i + 1)) != -1)
0 p. L; l' s* N6 m/ s;;
判断是否给本turtle的评价质量做出过评价的节点
' N3 ]6 s6 I6 {[set note (note + item j ([credibility]of turtle (i + 1)))
, a& w* O  e3 M0 d: d' |$ e;;*(exp (-(people - 2)))/(people - 2))]
. P$ W8 }5 e1 u5 z
set k (k + 1)
4 [) D& G! k  S. |]& M1 p' X' s; O3 e0 C9 N0 y8 `
set j (j + 1)
/ R' C1 X# d2 p]
% E/ n+ m: O: L# ?. }. m( {* X2 Lset note (note *(exp (- (1 / k)))/ k)8 O) I& E( J5 v0 Z4 m5 b
set credibility-list (replace-item i credibility-list note)9 S" o# L1 H  n6 t
set i (i + 1)4 Z. J' V- t3 y/ P) j
]7 D( R* v) _# C% {) A0 ~$ T
end$ O6 E% K; B2 E" g
7 D, b2 b. P/ n3 w4 _) z
to update-global-reputation-list  D; f1 k- `1 X# D, V% m
let j 0+ A5 V7 q' d5 h' V
while[j < people]0 \! K: m2 _$ V% o
[- y: H3 ~+ I  ]* i2 n0 f
let new 0/ G6 e  N7 x7 l7 q  O' X5 j
;;
暂存新的一个全局声誉
/ l6 G( K+ Y2 f' f* Z% Ylet i 0
- R! q" V- R) c2 olet sum-money 0
$ ^& G0 k$ X, r8 @6 Y/ H. klet credibility-money 0+ b2 ?& K$ h7 p. b! V* h
while [i < people]
4 J- }* a! ], W1 ?; o[
3 h9 K: ~; g! F) j% y, {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 q1 @4 [3 v. @+ l' n6 ^! ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ K, d5 \( j$ R& k5 j9 D( i' @! {
set i (i + 1)" {+ S% c; X$ ?- R6 D& w
]
4 E! [7 \! \5 e" [8 s2 ^, j* hlet k 01 H1 ~8 y" i9 g
let new1 04 s. Z2 n2 J" ?1 Z& d8 Z5 F& k
while [k < people]+ ^- k2 A' S8 s! _3 E- O' ?" p
[
3 x7 R, g& c- X4 ~) r. V6 _% ?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)
! Q' F, U; w. _. N. R, `set k (k + 1)5 p9 y  A# C: H8 i1 q# @
]* l- E6 E. ^# N7 a( q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' b/ _3 A7 t) {' r3 _7 t! O# }" kset global-reputation-list (replace-item j global-reputation-list new)
8 c# }7 o: ], m' H4 s7 k  ~+ Yset j (j + 1): n, {* X$ K# A0 V9 y" y
]* z$ r/ l: o+ W; Q7 r" H' @
end# Q0 Z- c3 W+ F/ n

/ [1 x- p& N1 Q4 {9 }9 l& g, }9 t+ O6 U% x* ^

6 K% I2 z; S8 S7 ?to get-color2 {) x# Q9 {% o' r

9 O5 R( ~1 b, @, ]% Uset color blue

" D  @; o) V) k7 H& Yend
% ^% C+ c( c+ Q7 T3 K3 u$ o4 \6 K! d! s
to poll-class2 r' Q8 u! z( `- _$ u* K
end+ X: T" n1 f" J. Q6 G- _6 Q

) o; r) K- Q2 Ito setup-plot1
0 c- T' R4 P0 m0 a9 x& h$ t- G4 V
2 h& Y5 L5 t7 Q5 Aset-current-plot "Trends-of-Local-reputation"
; u& c5 G. @$ F& |  u: u5 t

7 [+ y) C; }: ~! W1 }set-plot-x-range 0 xmax

9 y4 C! H3 b- Y! d' k
! T5 n, \: X1 {set-plot-y-range 0.0 ymax
# Y# x$ d- s7 Z6 C" `
end& @' v+ _( X0 l9 h1 Z% F
; ~& g0 Z2 L+ I6 Q4 H) Y$ u
to setup-plot2# e5 |* T7 M( p
9 I, J# H5 g9 T
set-current-plot "Trends-of-global-reputation"
. m, ~7 c* y* l# c6 F& t7 v' V
; F+ K: c. ^* Q# m
set-plot-x-range 0 xmax

4 k3 r: T! X$ [2 _2 F
  P, Y- C' t) |8 m: Fset-plot-y-range 0.0 ymax
% A/ t5 h; h6 P( w1 ]
end! T, c) z; E7 n
, Y1 s# i3 M: V! g; w7 j% p1 ~
to setup-plot3
& H( \% V. W2 L6 R* ~3 C& |- z4 ?) r2 @+ M/ f3 y
set-current-plot "Trends-of-credibility"

3 i& e* |' {8 T
# w! ?! j! j% |set-plot-x-range 0 xmax
& l# F- r/ F0 ?8 F2 T

2 [2 F, {- i' s: lset-plot-y-range 0.0 ymax

! N# l5 }9 g, m/ m7 Xend
  S& r/ c& Z; Z7 ]) C/ g
+ B7 }1 e! G- ?, Vto do-plots! p3 B. b; t$ Q- X
set-current-plot "Trends-of-Local-reputation"; ~7 L/ W" A/ C8 ~
set-current-plot-pen "Honest service"- B9 j, \$ W7 q% h2 f
end) V0 E, e6 T& F' U# l
; d. x2 {- `5 _' v& ^' Z
[ 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.$ b5 T; \, L  g3 b7 U
" U2 J& O, z+ A0 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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