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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:4 {# {8 z- _( O* D; J
to do-business 1 i9 Z, b) j$ f5 T+ ^0 \& s
rt random 360: V5 A5 E) U" |2 y- }) q2 M6 ]
fd 1
8 }) G' M- @* _. d4 f- j2 {& E ifelse(other turtles-here != nobody)[5 \9 {1 m1 i. Q2 r! e( v3 u0 f- ~
   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.: h( g* M) M& c
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 F; J3 m+ {  w- A, h: G5 F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 e) F' P& H4 `+ `   set [trade-record-one-len] of self length [trade-record-one] of self/ o, a* f) Y& A% l, Z5 K" `9 @
   set trade-record-current( list (timer) (random money-upper-limit)), v# Q  c% ?$ R& z6 x2 x/ x/ ~

/ O% b/ P3 }2 V6 G问题的提示如下:
- X$ A6 C1 S3 p# }( [. a, S, F$ k( h, z. H+ @) W6 k# G' ]
error while turtle 50 running OF in procedure DO-BUSINESS% N& G/ g+ T6 |0 V; B
  called by procedure GO! r* r, ~+ @$ `. [: {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 a. p, b) k* S5 t$ `0 ~% l# a
(halted running of go)
3 E) c1 V" q8 i) ^  z0 t' V! K, y$ R
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~~
  ?2 n/ q; ~+ U* M& 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
! m+ @* q6 U8 u" mglobals[
5 S$ K* C- @  n8 z6 ^0 Xxmax
$ w' E* p! c' A; V- i5 o- symax3 V* G  _2 R( e. K' D3 \
global-reputation-list! M- E  d3 Y8 p% ^3 m4 t/ N
. |9 D7 X& Y- c, B. S! F0 T
;;
每一个turtle的全局声誉都存在此LIST
* _- B0 z7 z5 ?7 acredibility-list; u4 Q, O% ^0 A! U5 }% V
;;
每一个turtle的评价可信度/ [0 a2 K( m) v& w
honest-service( V- s" j* P8 a, m; ]$ h: G
unhonest-service# ?, J! _  `) m
oscillation: T0 O8 m& {, h0 P2 N
rand-dynamic
( X5 s5 a  s& z! K! I. E- k; j]
% V2 t# a0 I+ K/ @. E. c! ~8 ?' g* D; t% s. p9 J! y5 H7 C0 B0 w' Y/ a
turtles-own[
- l" f2 w9 n  {" \6 Rtrade-record-all/ O3 s# C, [' }; v5 c  S
;;a list of lists,
trade-record-one组成$ i! [- S* f" @+ Z; |
trade-record-one
4 P$ v. E; ~) H- |0 X) y  Q0 Z! _) s;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 |8 Q8 J0 f' v4 R
& U  m( I$ ?3 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]]! Q0 _7 m" M! d0 n' ~- e
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]
5 m4 n% o2 B+ I2 m; S5 X& wcredibility-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+ H, q" n5 a5 P  R6 W
neighbor-total. g+ [; i: y5 o6 C/ Q
;;
记录该turtle的邻居节点的数目
7 H# {5 C; r6 S: ktrade-time( x4 x) \5 q6 Q# _+ c# _5 p
;;
当前发生交易的turtle的交易时间
1 R, n& o% g1 e0 }4 _, {appraise-give3 t* p: Q: {4 H. w  m
;;
当前发生交易时给出的评价
2 i5 g- [- {( f, _1 E  @% r4 L8 _appraise-receive
. y0 r8 t: f" P! e! k;;
当前发生交易时收到的评价
) S3 z, Z, Z+ W, oappraise-time5 I9 ]# j$ {9 Z' V
;;
当前发生交易时的评价时间, ]+ U& e( d5 N% a0 t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 V$ _$ u# W' G) }9 \4 l" a
trade-times-total) @% z0 R- Y, O& _
;;
与当前turtle的交易总次数# \( Z) r6 U+ \1 w
trade-money-total, e! p7 @4 K8 v; ]* I
;;
与当前turtle的交易总金额- H* \  B/ {# P' E8 i
local-reputation+ A# k9 R" e( S( \; o
global-reputation% o4 @% ^' P. N
credibility
; V+ l' z' s0 n7 q! K- G;;
评价可信度,每次交易后都需要更新2 E% l& }& Z8 b1 h, b2 ~
credibility-all, U1 l% c& |) ?4 I3 N
;;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( s- ^- [8 ]# T7 b8 _

3 a/ t' o# k1 Z4 s) F* r9 U;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
$ m- z) N+ U+ [  P! C1 M8 _credibility-one
4 |: y7 ^6 ]* L4 G5 `  X# C5 i;;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, z9 K, S& D2 F5 W$ O( f. Q
global-proportion8 r. J/ [9 v# ^0 a
customer
$ ]. S3 d. Q( icustomer-no
: r4 V) j/ h3 O  `trust-ok
6 D' k" C3 t9 c. d1 N) ktrade-record-one-len;;trade-record-one的长度
; j! x0 e, c1 b' c7 p9 K]' ]& h% n1 G. G; a- P

8 H2 a$ L0 L- A( Z/ [;;setup procedure
: r# K: p# W/ w9 F& c0 Y4 e, ]- h& ^* J  m( j
to setup
9 R& P6 R5 @9 `& S) v& D) e  @: j# `# f, K# p, W0 ~
ca

7 r- C! H) L8 u: V9 _7 F/ H5 h" y' @* F& }+ k4 c/ m
initialize-settings

$ e6 P" h  E  q! w. ?3 l/ i0 O( q6 Q: X9 r# [  B% p
crt people [setup-turtles]

3 y2 t$ U9 Q6 E( @% a6 v" r0 n2 F- k4 u
reset-timer
* K7 }  _0 ]+ D- ?. J9 |

: S& q  A* L5 o3 m  k$ S' R& `: y: Zpoll-class

" j4 h; K5 P7 l9 P; c' x- S5 t# v* U/ [+ @* C6 I7 A
setup-plots
; z7 f0 L& m8 S
  G, h: L- k' F' f
do-plots

: f/ A9 ~- @: R4 F9 x( V7 nend
0 s7 k. |+ t9 q2 \8 y
. K( c* x6 ~: Hto initialize-settings
* C6 a2 O6 w. q! g( g5 Y# Y4 |6 D+ m1 u9 \
set global-reputation-list []
  W7 X: K$ B" Z5 f1 o4 q7 g. @+ W
- A" Y. T5 O' C5 J) |. l( ^" {  J
set credibility-list n-values people [0.5]

- X8 C# \6 l9 @8 C2 Y% S$ R& q2 C
/ E8 T# u: x6 T8 ]0 Z( F, ]: Vset honest-service 0
& P2 _; J/ G% C2 V, E

1 g4 Y0 r- R  O  f0 uset unhonest-service 0
) c) b+ g" H% n( ^; Z7 \
6 ?+ C% h  `& L# f( a- L, z
set oscillation 0
6 \( j$ M8 ^  f: `8 @% U: `
' S, m* M3 R" j* @7 l
set rand-dynamic 0
) l, t5 }) A% _9 y8 d# q$ A
end5 U6 K# ?! I6 |9 H- O/ ?3 w

1 P1 Q  Z  U/ W- f; X# `to setup-turtles
1 K& Y' j- ~/ V% J3 y, O1 }$ P, V: T+ |set shape "person"
& ~/ h+ A' l& E8 d( z0 |setxy random-xcor random-ycor0 n  J1 g( k0 T% X+ F
set trade-record-one []% |  }4 i1 g/ S+ A: {0 B% F
  q, i+ w4 X" U$ D. u
set trade-record-all n-values people [(list (? + 1) 0 0)]
, e6 }5 p3 {  I" l/ q! \
& z  U) p' n# H+ s+ R1 _
set trade-record-current []
* j& S9 ]" D5 i. l6 `8 s2 Y9 G* Uset credibility-receive []
7 ?: u/ T% Z5 I# p- D) H8 K4 D1 jset local-reputation 0.5
  a' f/ U$ ]9 ~5 U7 A8 ~$ O" ]set neighbor-total 0# \% p1 B  O/ a( i8 Q5 n
set trade-times-total 0
. N! |$ @9 P5 H6 T4 s0 B# |5 }set trade-money-total 0
4 q- K4 S* X7 B! v* _8 y( T% eset customer nobody
3 n' b/ n1 e2 fset credibility-all n-values people [creat-credibility]0 X/ I3 M9 S( u0 K, w
set credibility n-values people [-1]
+ }& l5 m" X$ c7 c, E# p  V+ Wget-color% e5 P: |- \+ ]% I1 P
. l1 R( l- _- Y& p, \+ U/ W' L
end
( q5 p: o% {* T% Z( ]" Y4 A  q. N) |: l8 \) Z% @9 H. V
to-report creat-credibility5 O: I3 g+ U3 m3 M. d) B
report n-values people [0.5]
- I5 R( Z; q) oend" @2 k" o, {6 d( U0 O+ `% h* y

4 u$ _8 C7 ?& N- Oto setup-plots% `+ \8 d" R( l2 |
4 o6 p' X' u6 d) q/ h4 n
set xmax 30
; l; g3 L0 K% G; |. u& O5 m- O3 @% t+ ?
& |* z# E- D2 o! T) [
set ymax 1.0

* R$ m, J" e7 z
( V6 y8 F" }0 }- L( W, v* {8 Nclear-all-plots
5 f) J8 t- o+ h

& q3 V# p. b, A7 F5 n2 }setup-plot1
2 Q; f+ j1 q  e7 v
& X9 Q/ o# X: F) }' E# v" r# c
setup-plot2
; P8 @3 i* g& r+ t2 F7 P) O

( p/ l& @2 z2 Q  [setup-plot3
1 ^3 _) c$ D# a3 ]* h/ y
end# X- i! H4 q0 _0 E  N
# J  J4 j% @; D; i8 h. g
;;run time procedures% a' m- r9 O% _# N* j  w

: Y5 h  J( |6 N' H, C5 y& C8 Ato go
% V" a5 B' ]: {8 L4 T% a1 S7 r2 z1 W4 K- k8 u8 x8 @3 b
ask turtles [do-business]

: N* p$ ?4 \. R; |( o1 Y) b% H5 i2 }end
7 a) d  w( c3 |5 f" T: L
* w# z" L  b! ?! xto do-business
# [1 H- F- C2 X" l( r# z

$ ]$ s+ N: q$ G5 S
+ b1 w' ^) Q7 a! @rt random 360
6 \' V$ v/ y- U. W+ r

5 @- @4 n: @7 D' v4 d5 Z  q' Gfd 1
+ ]( f6 B) _4 v% ?+ x1 c

) t) c1 _; P7 I' Gifelse(other turtles-here != nobody)[
. _8 N6 p$ }4 P, I$ V

" i1 |5 A- f. |) r+ rset customer one-of other turtles-here
* T* N; U# [1 g" }: F0 j' c) ]

# c: b" ^; \6 _# q;; set [customer] of customer myself
+ C1 `1 i/ \. B1 ?) k
- B6 {! i, ~( w# t" p
set [trade-record-one] of self item (([who] of customer) - 1)
! w: D4 d" u* E. K9 Q$ p2 l7 H[trade-record-all]of self. x; p$ v! \* N: d- Z& }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; w: l! I; R9 n6 p4 _! y) b6 l' n
$ ?6 x: H8 N- Q. c% y8 X9 T
set [trade-record-one] of customer item (([who] of self) - 1)1 T/ D; u  g0 X
[trade-record-all]of customer
" I- r! v8 G# D3 z4 ]! G" l4 @% H
0 }2 G4 H2 O3 J. T# @' A
set [trade-record-one-len] of self length [trade-record-one] of self
( ?+ D: R) x% J: F
5 g# N9 X& I- ~+ R& W* L
set trade-record-current( list (timer) (random money-upper-limit))

% N6 E2 _9 k& [. h! }- g% ^( E. E& ^( G' [' }" I- Y2 X' k5 g
ask self [do-trust]/ Q3 C# Q+ T! k- y: w( `+ [
;;
先求ij的信任度
, }, b7 e' W# d9 Z' I3 j4 ]& X+ E5 U1 h: s' R' S# f+ C
if ([trust-ok] of self)
- s) x4 p; a9 Y, G;;
根据ij的信任度来决定是否与j进行交易[5 B3 w, Y8 C1 N0 e1 n) {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 R" G! p3 N" U- Q+ I5 K0 I+ y. h; f
[

( I' X6 X3 o+ S' A) n, B3 p# C
* Q: ~5 S- o, q# M- N  tdo-trade
6 x6 i; a+ Z  @1 W/ o1 \
6 a2 S! {" E  ]: V. a, }
update-credibility-ijl

: L; `  v& @0 R8 ]: L& I& @8 f/ t$ b9 b, C: l' }* Y" @& E7 P
update-credibility-list) J6 U7 _& A9 q4 v5 S/ K! h( {
8 |' p9 ?6 A: s0 ^

5 ]* x/ b, R2 M! P, M/ p' T2 ~: nupdate-global-reputation-list
0 @/ i* k/ `  }; w
& Z: o- s: B: W% `6 D  L; Q
poll-class

0 t! }3 v# `- N7 p& M
1 M) I( {  C7 ~* [5 d2 i7 d3 \get-color

6 K( L  s" b  E; U
% j( T. f5 O7 u% N  ^* o* T]]9 ^+ U9 X/ E5 H+ V9 s  p
- q, v4 Y1 |# M: S4 E1 A
;;
如果所得的信任度满足条件,则进行交易
' I$ \: ~' V6 L( c
7 L6 ?4 {, r% }. E[
+ G- U+ M: j9 S, p: m9 ?2 a
& _( t3 W9 @/ m8 f  K! T
rt random 360
4 `, s# V- c/ {$ i+ j; Q0 L

; y/ N7 s4 s" e  @8 z9 h6 J0 {& t/ efd 1
! }. X" m$ A9 l, `2 ]: j0 S- Y  l
0 Q7 e6 e, ]1 |3 c4 s6 F7 w$ h
]
8 }& v# o% e' X  {7 b

* S1 ?) w) _0 d2 b3 N: H3 {end
7 C, ]  u& t: x' W
+ a" E5 L5 D& x- b& o: k1 x
to do-trust ' q4 k' n9 h* x% |
set trust-ok False
" ^/ E. i7 H6 j% d3 [2 M& h# A! i. w: R  V
4 u0 _' a+ N( N/ T; @" H% O; r
let max-trade-times 0
" h3 @+ W; _/ y5 t9 T  v8 w% V; gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: |: F. ?# _+ ]/ Q4 U
let max-trade-money 08 b* g, F9 V4 |3 D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, c. O3 J+ ~! K) o( L" L+ llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), J3 K/ Q# z7 ~* e5 P0 z
, }& v- p2 n6 x4 _2 Z3 X, w3 s

" R7 z5 r2 X* F& `6 ^8 Uget-global-proportion
; p" I: i( b# K- Dlet trust-value# {% s0 I8 D# E- e  d1 H8 h
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)

3 |9 J9 S( z- N- E/ A* m  P* [if(trust-value > trade-trust-value)$ Z, F1 Q1 F# e
[set trust-ok true]
: Q+ x% r3 [* [8 U0 Oend
- d  ^- Y0 b2 E% n. H! L& \; ~, s3 A3 q  n  N  ?) @/ m
to get-global-proportion( }" [, g* Q, F. a$ O# ?: m  j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 k5 u( n9 y/ [7 y1 j[set global-proportion 0]: m. h7 e) g  q  F* M+ {
[let i 0
  s% c+ Q/ u8 n6 x* w. G5 `let sum-money 0
, A7 X; N: e# u& `$ Vwhile[ i < people]
! v2 M% m5 @; e* x6 i8 U, C[
; ?5 G5 b# O& Dif( length (item i  C6 A- Q: C3 B9 H: B2 V
[trade-record-all] of customer) > 3 )
" u' U4 {8 V& P/ v. g
[2 `$ C; ]3 T$ H; ]/ x  W$ K
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): U# }% Z# q% L( @- n6 c
]
* U. Y4 J" t. D; l' m0 F/ ?/ _]
  D; ?' y  y' n" c- G2 N5 M; Vlet j 0" N, x0 L8 I, l  n' ^; w3 l* J
let note 0
3 ~! r7 {3 n' D8 j& d/ l; dwhile[ j < people]
$ e8 O+ f8 {+ d) Y  p9 K( r, b! i[5 z! }3 e' |+ F7 \& ~
if( length (item i
; a. F7 T* e; U3 F3 ]# J[trade-record-all] of customer) > 3 )

5 ~( j- x0 {# S" ~6 c[/ T9 H. s3 X% u. n5 N$ z3 v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 G; n/ j% o0 d7 Z6 N: T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! n5 Y. j. j0 ~' r' `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( U: j' [5 L. i9 f6 `
]6 E2 Y" b  q/ I5 w% p
]+ \3 H0 V: w# u! \0 s( Y3 o  j
set global-proportion note$ y% r. B( @3 Q" I
]% W# [7 ^) K  {3 I/ b* f' e
end: `; u6 w+ h4 `& @  A: R$ \1 ?
! T$ j; z& P) Z6 h
to do-trade* \/ T" z* b1 z* [' ^3 l  T
;;
这个过程实际上是给双方作出评价的过程# Z; o1 \, Z7 C1 h: a4 {  B8 E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 B  G' s9 u7 @3 k7 r: K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) g- h8 b4 {/ b. y% s) [set trade-record-current lput(timer) trade-record-current
: y/ i3 Y1 P2 j: Q; ~;;
评价时间1 k7 j9 w2 d! G3 f* N3 N
ask myself [/ B$ R2 Q2 @% C" |& j: e
update-local-reputation. }+ M7 T; f4 J- H. ?; M7 m5 h
set trade-record-current lput([local-reputation] of myself) trade-record-current; U; d8 I/ \: Y7 t
]/ ^6 P- Y  p+ j  @7 V# I0 x; x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ `; L- r+ q1 D& q+ f
;;
将此次交易的记录加入到trade-record-one
$ N7 }/ B- _  s8 }6 F7 oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* a- [* m" [  `) K5 x, Dlet note (item 2 trade-record-current )
  ]6 Q; U) I- R9 h  bset trade-record-current
% M) d" n' a1 B) s: h(replace-item 2 trade-record-current (item 3 trade-record-current))
3 i: G, t  q* Q, O" a: |
set trade-record-current" r3 F, u  \; d' ?
(replace-item 3 trade-record-current note)% w. i+ M, C$ R+ I
: x0 K, a3 }! I1 i7 ~9 I
5 Q' c/ y8 Z, H6 D* T! T: P, @7 a
ask customer [9 l3 e# @* H. U, h" W" M
update-local-reputation
, M( i9 D- H. O: |8 @set trade-record-current
' D4 i  W) y* a, u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  w# p0 M' k# L3 i- W* X- l]9 k+ d% E8 _: Y: |. t7 u
* y# z) _0 ~; W& H; S# n
0 f, ]& ]* [4 L9 N* t, M/ n( B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* `8 a9 ]- @0 G6 O$ P, k
7 j( ~- ^! ~8 C' N2 C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- a8 f5 H. _( {- J, E( n) ?, ]4 U;;
将此次交易的记录加入到customertrade-record-all1 k  V2 x1 x7 h& E
end+ z2 g8 }! r* r  U

4 A' C8 \  v0 I) {& O4 tto update-local-reputation3 I' p' \# V0 |6 r
set [trade-record-one-len] of myself length [trade-record-one] of myself2 t" x) v: ?7 U3 o+ Y7 D+ @( A! ?

6 v2 [$ _( ~- S0 u: i) B# a. m$ e
- R2 j7 |- N# `& {' v;;if [trade-record-one-len] of myself > 3

% y& r, q5 N9 Q5 T0 ?. i. E5 Nupdate-neighbor-total
/ J, T" n* M& k- k( D2 _& {;;
更新邻居节点的数目,在此进行
% L! W% Q5 E: @let i 3
, k$ {7 A5 y4 S* alet sum-time 0
( e7 k/ z  v4 v1 @$ y- awhile[i < [trade-record-one-len] of myself]
/ T# p( L; E7 H9 H, t- K[+ U* o$ `8 m1 Q+ i& a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ U. _8 ^3 {0 P5 i' [4 Q" _set i
' U! Y, v7 s" O7 A1 N) Z0 a( i + 1)

  _, f0 ?# ?* C" s( {. G]
. G6 \) ~' Z4 a/ c( qlet j 3
$ A! h; t5 f! w& N/ D3 alet sum-money 0) ~8 |+ H0 ]( L6 @7 [
while[j < [trade-record-one-len] of myself]
, {; ]) _' }0 P- t( s% k! y[
) R3 n) {) n) c/ i% n/ Sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
& t6 X* k0 P, l+ [set j
0 B/ i. I  Q& D: U* O( j + 1)

. O( U; X; ~! k' ]; ~# X$ f]& [) p  z" p( n/ {
let k 3
) i, {) U. l* y( x) ^let power 0; u0 B0 B1 x* Y3 o
let local 00 l. ^+ S; \# F7 N% o" h+ q
while [k <[trade-record-one-len] of myself]6 g% s; Q8 t, p7 v- w# s
[
2 n( O9 @. @3 Q6 }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)
: Z- s% K4 Z3 W( N, h. H! }set k (k + 1)* A! T' b8 O( b7 p# @% b- v7 c* w
]
, d: C) v5 v. g2 q$ _& kset [local-reputation] of myself (local)4 U2 k4 h. Y- w  h1 V% G8 u
end
9 T: ^. E& w! Z7 w+ l& C+ C) [' T- C- z8 [
to update-neighbor-total: V3 u1 I+ a5 J& @7 K, \* L

0 p- k* f  ]8 ^' y* }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; z" W4 Q: t, c- m: b6 W

" w1 R) k' e1 n: U# F+ b
* y7 `# Y" N# R% E
end
' S: b7 ~; `8 `% S4 l1 W3 ?' [9 q5 ], W- [! v6 T& C4 Q
to update-credibility-ijl
' i3 D/ B- g! |' N  E: Q0 ~2 g/ k- h0 A) v2 J1 P8 ?
;;
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。, a  [4 L2 z; ], ~# o4 K+ t/ X3 K
let l 0
$ D# ^( _- f7 Ywhile[ l < people ]
  }) r. i* n0 p) H& z7 T;;
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6 R( ~: q2 n1 @1 a% m
[
+ Q1 G& N' [! `% Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 Y/ ~) P. E/ c5 n- C8 m- ]
if (trade-record-one-j-l-len > 3)
" I+ r) [+ ^% E/ c- |( ?[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
) m" |' t: _7 v; ulet i 3
! _9 H; S& i) _let sum-time 0' _9 Q$ \+ \( ~% n. n9 l
while[i < trade-record-one-len]
0 Q% x7 K2 t2 q+ U) f[/ ^2 L) ~. E, [; L. o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 Q$ q* U! A5 m# T9 r* x$ Z- cset i
  q4 S3 B3 P$ o& [( i + 1)
6 w, o7 E2 w9 O' i' B. W1 x  r
]
" s5 a4 L/ Q( u6 |$ L; Z' O5 w0 _let credibility-i-j-l 0: O& {$ C) [$ d+ H: S
;;i
评价(jjl的评价)2 {3 ]  A: ?, H) K) ^
let j 3  I: n* o% m/ y( C3 J
let k 4
3 P- U' S& L; [5 V6 Hwhile[j < trade-record-one-len]9 F  ~" s1 a- S+ N* k
[
, |7 L; z6 q( F  Y: D! \* 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) j4 X& S* s1 {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)
8 M( J+ e6 p" X% m4 wset j
# M6 @$ U/ u. ], m& W* g9 l2 @( j + 1)

7 B% g: D: ^8 H$ s5 Q, C, }7 J2 y7 e]
) Z0 Z4 |# s3 ]' M1 Dset [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 ))
! j6 v, ^2 A3 @; S* [5 i
  q! t0 n* L* G% U) }/ f

+ j6 J0 a" Z; e( k0 p, }* \" Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); N% E, ~0 f6 E' V$ h
;;
及时更新il的评价质量的评价
  t; a0 O/ T3 w; B( n. F4 {* Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 M: ^3 X$ A  j3 \
set l (l + 1)' i; d; z0 c: [; I& a6 W, `
]6 f1 F/ ~% g4 a4 z" q: \- l
end
9 t* C4 T% T' r# t4 K" c4 Z: E7 S9 C% t' I! f2 L
to update-credibility-list
& T% x5 k7 b; c8 V+ ?let i 0
5 S. e" X" t, C2 c4 r! b' cwhile[i < people]
; V3 L+ ?6 \  i4 |' v9 U1 p' [[
# F/ j# V* m7 Olet j 0
0 x! f$ z2 T0 J2 o: U& w# mlet note 0+ d+ ?+ P7 V, q' j6 }; V  D
let k 03 g! N$ Z* l& p# A- S& r% S
;;
计作出过评价的邻居节点的数目
, ^0 X. r3 R: T" a3 w! a9 Cwhile[j < people]$ A; E& f2 U. y4 u
[
4 ]0 g/ o; M4 rif (item j( [credibility] of turtle (i + 1)) != -1)
% C* x1 B+ J7 K- V" t& T) ^;;
判断是否给本turtle的评价质量做出过评价的节点; L( R! [/ x8 t4 D/ }
[set note (note + item j ([credibility]of turtle (i + 1)))) t" X4 [0 D, h4 h$ J) J* x
;;*(exp (-(people - 2)))/(people - 2))]
) `- x& x4 i' g5 i( O$ K
set k (k + 1)
4 C. x0 c! P  N" N]
# q# V; M: @9 ^set j (j + 1)
7 o$ w0 e$ T; o]& R% d, v, @  g  Y& s  U- z
set note (note *(exp (- (1 / k)))/ k)
, p" L$ s3 M) o2 Iset credibility-list (replace-item i credibility-list note)
, g" P( M" C) Y% L6 Aset i (i + 1)$ E, \# Y* S9 f& @4 \
]
2 c7 c5 x1 H1 y7 ^5 Send
9 ^0 ^( {2 b! D: O* `8 |6 B+ t2 ?( \$ {, Y! a3 E7 d- }1 a! {
to update-global-reputation-list0 ?1 {) f0 k2 O0 W
let j 0
" r3 f6 Z7 b8 }; Iwhile[j < people], z# D" ^7 {# Y$ x
[
4 Y+ ]" u$ k4 M: P3 Hlet new 0
, c6 u2 l" U- v4 C9 K;;
暂存新的一个全局声誉2 M! U+ f: o8 R
let i 0/ O6 ^: ^7 `  ~+ U$ ~1 l
let sum-money 0
1 d$ H& T& a* ^( ^4 H+ }let credibility-money 0
1 `( v! i2 V* q$ m" Swhile [i < people]
; c4 r0 s5 X- U" r. `[
* |# z4 C2 v  A; W# I7 S) lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. b: C5 K8 M8 m  {; Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 E4 ~, K) U7 m2 P( G8 ]/ q
set i (i + 1)
3 k1 R1 d4 S, v- a], r+ G( W( l  Y+ O
let k 0  n. X; A: ^  O7 c. F: p
let new1 0
, P- J& ]8 H6 Qwhile [k < people]
& B4 N+ D2 e  G  C# U% q( k4 w8 u[/ `. R) E+ A+ q
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): a" l, M; ^* F" |# P* E8 M' L# J
set k (k + 1)
/ W: {& c( _6 J]
0 B7 p9 D2 g! V( M* R6 \set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - y) O# m/ Y) a+ p3 q. J3 v( T
set global-reputation-list (replace-item j global-reputation-list new): h, D  s# W0 ?( `
set j (j + 1)/ Z; |" Q- }8 e3 F7 H$ F
]
- _& H. k; a6 @9 Cend
( x- V5 _& y4 ~3 G( N% G5 I
- [" W- ^/ }  J
) u# l' n2 d, H" a
: y* h' `5 a" E  S, x2 v) S: |, Cto get-color' P" B1 ^- H; S2 s, a6 T; [+ H

9 C3 u# `: V) S: Bset color blue
2 O. p2 H; r, d+ U
end! L* U  [% {' i
# X5 N3 @( Y6 [# J
to poll-class) U$ D0 V% q1 c, m0 |$ l% M2 n( S
end. i8 U/ U$ j" L: j. J/ f

* n. K$ X3 @5 z" Cto setup-plot1+ Z: R* A9 l0 c& A! V' I6 B

& g6 M7 O2 ~2 b& v1 g  s" bset-current-plot "Trends-of-Local-reputation"
( I0 T, ?) f; p5 l

+ O: M1 s+ r' A7 Y2 l( X' yset-plot-x-range 0 xmax
$ g- u: G- O* p* L! |+ S: m

7 n) r4 a! W) R% H. bset-plot-y-range 0.0 ymax

- X" g8 k+ @5 U' C) A7 zend
0 T, D8 ^/ R) b/ h4 X1 S3 [* l3 s1 c5 ]3 q+ c( R5 k$ Y3 U2 B
to setup-plot2
3 r9 B& o7 `: a3 v! \( [
! |" l) L+ P7 Y9 }7 jset-current-plot "Trends-of-global-reputation"

7 N5 J& V% N' Y3 E+ d1 v% f0 U
! ~, M  k& K" c4 L9 iset-plot-x-range 0 xmax

- f' Q" k4 c, m" K: z, R: O, s/ K! v0 ?9 b3 j8 T% y# i
set-plot-y-range 0.0 ymax

$ F" Z3 ^+ o2 Q& Eend/ n5 @1 @3 r( J- g
3 T, T, L8 E9 q* X
to setup-plot3
( z/ H& H. V- C$ q/ p* P7 M) l! x9 L1 x- Y
set-current-plot "Trends-of-credibility"
, S6 g3 A/ t! w
; |6 k4 n0 J( o7 E* [
set-plot-x-range 0 xmax
( R3 A/ s- X/ `1 A  C, d# X
/ f5 _: c; e$ ^; j0 S6 m
set-plot-y-range 0.0 ymax
! L6 f5 j. O* M- p" {! O9 N
end
5 I. k$ \* I( Y( L! Z; O" }% n4 G4 t* o& s1 n" n
to do-plots( ^% u/ F/ K6 t# ^
set-current-plot "Trends-of-Local-reputation"* K1 |+ Q9 J- u4 I- e7 v; A. U
set-current-plot-pen "Honest service"8 T0 V3 D0 I  B- W) @
end0 ?% @6 P- a* b% ?. n$ B0 U, S" A7 m3 y

& ]) i0 j: E* O! E/ \" W- q/ E[ 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.
9 N4 j4 b4 p8 G/ v1 W3 ?& _% B7 ^; c: R0 Z& Z( X
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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