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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:
: P9 ?  N$ M3 B/ t; u' c9 ato do-business 7 g9 g1 C, j7 X9 @
rt random 3607 {6 d* b- c! }
fd 1  P6 i- N2 p0 a+ R+ l9 `# |
ifelse(other turtles-here != nobody)[
$ ?4 {& D5 w8 @4 W, r   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.
# E) g: p- {5 w3 h& e! q* o: C   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" e) T+ W0 a* ^6 j3 D: G5 k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) @: L+ o2 z" p+ [" I7 g# J+ D   set [trade-record-one-len] of self length [trade-record-one] of self( r# q4 Z2 Q! N( A" d
   set trade-record-current( list (timer) (random money-upper-limit))6 H7 N( M0 D- Z) T& B7 }3 O
  k3 t) y, E* H- \: o
问题的提示如下:! V9 Z2 ~/ ]+ P) v, I  V! h7 ~0 l- }

- Q! E5 |4 S/ a9 ~. derror while turtle 50 running OF in procedure DO-BUSINESS
: U6 d$ x* A* g7 G- M# _  V  O  called by procedure GO! E" ]4 Q* e$ u9 O" W& Q' u6 O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 I8 ~; S) G' K# k( ^" @/ C
(halted running of go)
$ F- i4 W7 M- d2 n: ]$ y. E4 J  y/ p1 U+ 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~~
, K) i1 L! I2 n- D( ?0 Z  b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
8 Q. H3 W! b; h3 R; dglobals[1 O& G  J2 Q* j8 R4 |0 j
xmax4 ~( M; g" ~% A" @2 \5 s
ymax/ R- W; H) @! U2 w- J; D$ A
global-reputation-list
6 ^9 f: \) Q8 `8 n4 o
+ z9 c" B8 T6 R;;
每一个turtle的全局声誉都存在此LIST
( e( S) w4 o3 |! Hcredibility-list
3 u/ c$ G  c1 U4 j# J;;
每一个turtle的评价可信度0 g2 r! R- w$ }! @+ d  L
honest-service
9 m; z3 g: i# k% ~unhonest-service
! }6 d* E# @' yoscillation6 V0 _: I0 f! L5 W! a! F
rand-dynamic
1 d9 `/ L/ U& W% X6 j3 R8 c9 F]
7 [4 j2 `( Y1 R6 |4 f' l* P
3 {! d0 y! ?* f. |& kturtles-own[1 S$ H" G: ?) O! L
trade-record-all
2 @- P3 }8 |6 d' \0 B2 V& f8 {/ a;;a list of lists,
trade-record-one组成2 f) h5 C/ }9 B
trade-record-one1 e: ?  T' w  C! L# p3 h  D5 r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" C4 ~5 O$ Z) A
; |2 \) b: R  G5 }. o) l
;;[
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]]
  @, M; D3 W( h& o3 Y4 ~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]
$ s/ R+ v1 W; t4 E  q) c7 Lcredibility-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& u- M* `3 X4 }/ Q, f4 Z
neighbor-total+ \0 }# u* ^9 x: s' x
;;
记录该turtle的邻居节点的数目
6 w5 m& I* P: I8 A: N' A. l4 Ptrade-time
8 U0 g: |- E' ~% ~. h- t* };;
当前发生交易的turtle的交易时间
- k. T  [  J  G/ O" Sappraise-give% F: v3 \$ |. c% `/ X( d
;;
当前发生交易时给出的评价
$ t8 T" S4 v5 c- R, h9 _appraise-receive
# u; m- U7 w8 y) I; b;;
当前发生交易时收到的评价
5 G6 J7 o  w* B$ U4 ?% j7 j, gappraise-time1 A" Z- n: }8 @/ a/ R3 Y
;;
当前发生交易时的评价时间
$ ^: U! p4 a  e* ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 I% B; R+ n: Etrade-times-total+ Y2 y) e2 h- ]3 ?! n3 V
;;
与当前turtle的交易总次数
) \0 J) ?; F* X9 M0 E$ Dtrade-money-total4 A' L2 O# X6 C% O$ X6 ?! ]
;;
与当前turtle的交易总金额
" z' o+ s' E6 y0 W' d( N6 \1 \local-reputation
9 t+ d- U7 Y3 f& iglobal-reputation
$ x6 h6 g# g5 {, D8 q" ]credibility
$ T/ s5 n0 e# M1 S; r& V;;
评价可信度,每次交易后都需要更新
; @2 J: [, @$ \3 C% Ecredibility-all& c4 Y$ \$ z  h- K* s3 d
;;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  F2 F; K3 t; Q, A* ?7 n+ E
6 T0 K$ B. h5 I1 s
;;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
/ z4 k( J/ L1 P* scredibility-one1 y, a. [! x" }9 x  P
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
9 S3 H  z9 H, K9 M# P, a2 ]  {  a# O7 @global-proportion
" }  @/ ~5 L0 f: Bcustomer( ]0 H- U* l0 {8 o4 i
customer-no
9 [* U, N0 N8 z/ u5 w8 `trust-ok
8 o* ]1 |- v' o. Htrade-record-one-len;;trade-record-one的长度
' J: {- s$ ^: `9 l9 ?6 h9 []
5 _5 x  P- D) Q7 N( M2 y! E% V3 A, _( }) W" H# g9 [
;;setup procedure
$ T' E  L1 G* n4 n* w3 S5 ?1 B" p! ~+ p, \  X* A
to setup
6 ^! \9 G+ g4 g, g- J) d4 _
) [/ f/ t1 L$ o; X" d4 Aca

! k3 r: Y2 i8 A; q  A& o0 j0 @% B0 b( t* T5 F- e% i: Y* u$ x
initialize-settings
7 _+ k5 q3 T7 Y1 a
2 F6 w8 d3 @) ]$ T8 T( d' a8 U  M
crt people [setup-turtles]
1 |. D6 Z8 X) p/ m5 |. `; _. h3 I  ~
/ l0 i9 c+ r- k' q3 c2 O+ p7 R
reset-timer
: p7 p$ q" Q5 s& i( C3 f8 D2 |
+ P0 `4 `3 S9 b  g# |
poll-class
7 p/ ]3 K) o7 f6 \4 c- g

# W- x, d3 p3 n1 Q6 L, osetup-plots
. l2 g9 r) R  e2 j8 K: c
' A( U1 N9 y* h
do-plots
3 f/ s3 S$ h0 E& z/ C
end8 s/ r8 F: T! d0 g% D& D% v
, f. P# |7 G; B( Y1 U' e, \
to initialize-settings: g2 n" g8 {. z

' T& g+ a5 h: W& o. sset global-reputation-list []

1 q( X, D' `, F' z" y
/ F) E5 s, A- \2 H8 `, wset credibility-list n-values people [0.5]
* L2 W1 X( d1 n1 d5 E; F

% F) H+ O1 Z, z! W( _- ^: M5 {set honest-service 0

. d+ O# d. G" Y8 X- l( g1 i- |6 Z: \% }+ f, [. W
set unhonest-service 0
" a" [/ i# r8 ~& v; j. ?+ t

% \2 C7 i6 ~& J* B! |9 i& n: Iset oscillation 0

, b9 T& L3 c  s) r. [1 D8 f
4 d: z5 a8 E- q, ]# }& ]set rand-dynamic 0

3 a, b% ]0 i& P: g+ O8 L/ u# [: rend
# u  [! C4 @# T0 B! Q. u
* W& e  q1 x) o1 B5 Dto setup-turtles
# q9 A$ x2 z. U4 P, S  Z% rset shape "person"2 a( r; x0 H. {
setxy random-xcor random-ycor
8 a7 z. q! j& Z2 c: u8 M& W4 G' }set trade-record-one []
1 {) z7 q# W6 L) k
2 D# P. z: ^% p; n
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 S5 e- |4 |8 [
9 l1 E$ R  s2 `6 K
set trade-record-current []! S: ~- `# z- h! J
set credibility-receive []
8 ^5 @) W0 D1 {set local-reputation 0.59 x6 d7 H* r3 {  j
set neighbor-total 01 J. D9 Z9 i* I8 y+ F
set trade-times-total 00 i8 p: n/ t1 r) M, ^/ i% [8 S7 r6 I
set trade-money-total 00 i( l9 b* `/ ]' X3 `
set customer nobody" w! k9 g, }8 w% `
set credibility-all n-values people [creat-credibility]2 Z+ e- @  L1 {. W
set credibility n-values people [-1]8 n1 T) _; n& b! F$ Y
get-color7 Y1 e6 k$ {( K& H
$ M+ H; m/ q) n7 _. u/ ?, T
end
) A1 X/ G7 C. b2 j
& }1 `7 p" J5 {$ Sto-report creat-credibility# L: @1 L! w% D" ^
report n-values people [0.5]
; R, o7 }6 c  C/ b9 Bend
, N- L1 P+ D9 k3 m! A2 _# r/ y% T3 H. t  {# b+ o
to setup-plots
9 _) }0 C8 P+ Z+ Q; B# a8 O' a9 y4 R. S
set xmax 30
  Y7 j* O: `( P% w/ [

1 z- h8 g0 T* k& Z. G3 `* P+ hset ymax 1.0
" ?! i7 k0 f8 j1 ]
: c, m0 o3 C1 \. ^: p
clear-all-plots

+ q  I7 V/ j- }4 L6 l2 ]$ c& I1 y( S
setup-plot1
: m0 ^7 h9 z( N
0 `2 E& K6 W" U5 H( ~$ t
setup-plot2
; J  e; w0 l% B) A' \1 b/ z

! W$ }; ^0 c; x+ }! x3 P# W+ ~5 Psetup-plot3
  }2 t8 y8 Q0 g- z
end$ U7 ~$ i$ t" H; o4 C
# F# ^4 ~- W  G+ w. U5 E
;;run time procedures$ v. |8 g' _9 p' d

- G" L* m3 [: j4 r/ d( v' Lto go; l+ h8 \# N5 Y) D9 }' x
+ T9 H4 {4 `  O
ask turtles [do-business]
5 m2 s! {" p1 S% g# I( T
end
0 ?6 Q! d+ b5 s9 j, d
" G  w% s+ J) m  vto do-business
4 `; r0 v) R8 n) X0 A! P
, w$ t9 Z+ y( r3 Y: I7 ?5 k

- n  W7 ?! \+ ]% R% lrt random 360

3 W# e' u( p( M( T$ k' D3 x" \5 c* K1 Z) Q$ o
fd 1
6 w& \: f% ^: N$ J8 _6 r
* n8 o" x4 |- C3 @
ifelse(other turtles-here != nobody)[

+ I, J  d* ~3 H! a8 M4 o" O) ?/ P' Z  _6 b3 b
set customer one-of other turtles-here

7 Q6 l7 e& @+ o' ?$ U- E
- e8 _3 h6 b& V+ i6 {3 t' R4 |;; set [customer] of customer myself
9 W, _+ g1 a6 i! {0 N; h* C2 u+ R

) p" w4 V3 T7 ^; ]' E, q2 rset [trade-record-one] of self item (([who] of customer) - 1)
; ]2 j5 G1 u/ m  S[trade-record-all]of self
& @2 |( }, a: @1 @. V3 R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 e' f6 u8 `: e3 ]8 m
! N$ P+ B9 Y7 R( J5 z8 @* Q3 Nset [trade-record-one] of customer item (([who] of self) - 1)9 k  G! Q' S- p0 A
[trade-record-all]of customer

& Z9 ?% H1 `7 c+ D0 C% y/ {6 V
set [trade-record-one-len] of self length [trade-record-one] of self

' A/ S: c; @( ^1 [- Z" E9 g  J; y  o* L. z
set trade-record-current( list (timer) (random money-upper-limit))

! _3 ?- L. ^1 n1 T
: E8 v3 u/ o* I) C9 f4 \) lask self [do-trust]
  {& j6 H+ q2 D: z;;
先求ij的信任度
; R  a. o6 b* ?% f' L
* }8 H. U0 R9 W. Pif ([trust-ok] of self)
" N5 K# p5 E2 @8 q;;
根据ij的信任度来决定是否与j进行交易[
, j8 A3 X  p* `  s' dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 D8 L4 Y& m7 i" o
# D8 t- V8 @7 v7 E* s  E
[
3 m3 v5 {+ Z6 }- ]

# m5 Q2 y0 ]* G$ wdo-trade
. k& z. A3 _7 u2 V+ p" g

4 ], C5 d5 m& t8 @update-credibility-ijl

, X' y5 V2 b$ O9 E
6 f- L0 ^) ~! {' Z: W2 `update-credibility-list, A8 f' j% ~8 n  W
/ O" h7 A6 l  ~. [

! t* b) ~; [: v* V$ F# Aupdate-global-reputation-list

, H! I6 b3 e+ E( `9 W
* k; }- H- o1 q) {! Rpoll-class

7 N" P2 N6 A! Q7 @# I" J$ l: w
" f( i7 }8 v. u* g7 d+ g( S  pget-color

% ~* f/ I3 B5 `! f! Q( \4 y- m8 z  f- l7 U/ X9 O6 |
]]6 d: R6 a; Y1 I1 j( j& ~
4 l. E2 M' V5 ~0 k9 w' f
;;
如果所得的信任度满足条件,则进行交易5 ~: q- T/ I- ]# D  p9 c' k" S# P4 W

) a3 H) V6 J+ O" r) O( q[

6 S. T4 d+ Z2 N1 c& T, d& b
; z" x* o# d, g3 x8 [3 k+ i0 hrt random 360

, {- p% P) O4 {' P
# C" Y9 h# c1 B5 X4 s( Mfd 1

5 e  b4 M! p/ W8 e
# ?* j5 U* }; C7 c+ }& B]

- T5 d* e% B$ G7 o5 F
1 }7 Q. f% l8 V: ~end
  ^; R& W  B8 @( v' X# x
  Y5 Z) o) C% |' ^0 W1 z* D/ m4 B
to do-trust , n% U4 f) U9 X
set trust-ok False
5 k. J0 ~/ v* t: D/ `  g
  X" o, D7 W- T% C

# ?3 x# o  b& `let max-trade-times 0
/ Z5 G: g# E# @, w0 J( Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) H+ f$ U9 K# r9 Q# ]( K
let max-trade-money 00 P6 X8 U$ t% w3 y1 |: R+ U$ d
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: s1 t3 h# K$ @  o( y- Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  a- ?+ L, I# g( x' Z+ |2 i9 o2 T) T
2 O6 l2 }- M7 o. X  W* u9 H

6 ?0 u# ~( d0 a; Z8 ^1 u  s/ ^get-global-proportion
" O. x4 `# \8 {: Plet trust-value
; a* H7 N! X7 s+ Rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

& f# M% f  G" l/ z* Q! aif(trust-value > trade-trust-value)- z5 }( k5 ]; i$ b
[set trust-ok true]
: @$ w5 @$ W! D2 B/ K: Yend3 E) S8 L0 U  e2 k# s
# z: D" T* \% t# y
to get-global-proportion
' a0 q; q$ }  \; f, v) u' Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% ?+ u3 a8 X- J  }/ D. t) A
[set global-proportion 0]7 S. a; f. O3 i; F0 C; E3 U" k5 _
[let i 08 T* U# H+ d9 m5 U8 Z0 N! k
let sum-money 0
4 t$ @' O5 i( l+ ywhile[ i < people]
$ J. U5 [/ g" w$ @) i  N7 A/ ?[- {4 Y) w, h4 G
if( length (item i: e  B9 m, p/ P: n
[trade-record-all] of customer) > 3 )
3 a+ y0 h/ D. ]9 J
[) H9 z, C$ x. F& \+ ^- [! X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 n6 y6 P: I$ h# {]8 x& o0 [! l3 _' o) p
]
" C( E2 c4 u2 X5 Rlet j 0
+ m$ U9 K! ?1 ?' G, A5 [6 Qlet note 0  m/ t% m0 q. p* g% o  N
while[ j < people]* W3 g' d  g- o8 \8 r; |4 t" J
[$ @% V  @3 g" d6 N7 K  S
if( length (item i- X, S" M+ R' A$ \7 q
[trade-record-all] of customer) > 3 )

% q; K1 X& X5 I. l) I9 ~" ^' e[/ N* y% R4 G: y6 g# L2 p- {) C" k9 _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 E- q/ ]7 S. K+ S* T! R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 p1 i4 V5 ?! `, G0 j0 e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' i! x) R4 q: h$ h8 {1 |" r
]
+ ^) K7 @. C# Y( |7 A]
3 v+ [" Z+ P5 Q; Y" o  Rset global-proportion note  S2 }! n- x4 O! D  e1 a
]2 C* P" V5 Z  P4 X$ m) I6 Z6 c
end
2 \$ N, a+ n; o5 z, R8 B# W, m) x9 D7 |- @# X& k0 D& f" X
to do-trade
3 p# f! a0 k5 ?" P+ \: P;;
这个过程实际上是给双方作出评价的过程. _" h) v2 ?6 F- P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, j2 W8 ^' w  y. S0 \, Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( O" _" C& o" y9 }- Y/ k6 b5 Xset trade-record-current lput(timer) trade-record-current
+ G3 _4 }: r6 l& n) c9 g* X- w;;
评价时间8 D  U$ y- s' F, r8 r& _$ F
ask myself [
- J+ b3 o" c) l7 H+ Z, }update-local-reputation
9 X5 w; n( u) i* nset trade-record-current lput([local-reputation] of myself) trade-record-current# s! E* ^4 O; }; f5 J$ A5 T
]6 P+ k  f8 T& @
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' m# d/ Z$ y, }5 t
;;
将此次交易的记录加入到trade-record-one
( W. w7 [- u  i4 p( @$ e1 kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' E3 d5 e0 A+ m/ g8 D1 ^
let note (item 2 trade-record-current )
9 t+ ~0 \8 G! q0 f: N& t- P. qset trade-record-current# J' O1 ~, g! [+ |7 s& P
(replace-item 2 trade-record-current (item 3 trade-record-current))

7 O- ^2 k3 W$ G) `" A& _set trade-record-current; y& I; V% N" y: E9 T
(replace-item 3 trade-record-current note)9 Z, |6 S/ L( p# E: y! c
3 u! x) t6 d% m8 p! P

4 r' K( }( Q; Z+ ^2 q$ r1 Bask customer [
) k* X& V5 M, O! Xupdate-local-reputation
3 c  z- Q+ e2 g4 T3 K; {set trade-record-current
: r. J" e. `# P. P" d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% H; _4 j2 u4 P- y$ ~+ n7 f]4 e- k! b/ X- e( M
: Z) p4 _, V6 G! g  H! Z# q

2 l! ~7 ?, ?  }2 M5 ]/ @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  b$ s5 L! b8 v( k& m  E& |0 v: R
  a) G$ I. C) k' G* l6 i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- T* ]+ h! ]" V8 ~$ _0 y2 p. S
;;
将此次交易的记录加入到customertrade-record-all
# Y1 n8 S0 K8 K9 z( yend+ l6 \# G# O2 }- H
6 ?. ~0 I/ r0 M( t' p
to update-local-reputation8 n9 y0 w4 x. p
set [trade-record-one-len] of myself length [trade-record-one] of myself
# a0 m( ~) d' }3 P( D% \. m, ~
4 o6 n, N" J" f- h
" m  }9 \% \& D;;if [trade-record-one-len] of myself > 3
* O, n0 L, {3 ]$ Q6 x
update-neighbor-total. Z! q' x8 D, D6 f- P
;;
更新邻居节点的数目,在此进行5 S/ S7 f& d* c9 F
let i 38 n4 ^8 q) t# Q4 w8 S2 y
let sum-time 06 X3 [# M* l2 C( x5 F& O; S  ]
while[i < [trade-record-one-len] of myself]* D: z$ N6 `$ Q( [$ n7 F
[
' |% ~8 P/ o6 _, v& B! M' @/ [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* p1 X, D- |( L/ g) s7 O; g& Jset i* o" J# w( Z. ]) P, K) z  e& {0 S3 C
( i + 1)

  V+ S. y% w, b2 @1 j]
" y, O2 U; G; `9 M% H7 plet j 3
) ~$ G" X) o  D/ B+ dlet sum-money 04 A8 K, a7 |) n1 z
while[j < [trade-record-one-len] of myself]/ x. }; v% H2 c+ Q; E
[
4 m* K' o. k2 D3 J- 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)9 d' s6 w1 B/ I  H0 i2 y% @& I, T
set j
2 o  U, {7 g3 t2 s$ o$ y( j + 1)
3 s! Q1 R- P5 P6 I
]- K; D, A+ B$ \, A
let k 3
/ Z/ [' G9 l4 i' b" _  R: `9 `2 Rlet power 0; A" a  p. r7 F
let local 02 W' u5 b. j& q  H; s
while [k <[trade-record-one-len] of myself], U4 x" A* T3 E$ ~2 }( y9 M6 c$ K
[
2 |0 c7 L! L" D) ^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)
9 J& |9 A8 S& `% Vset k (k + 1)8 h" r! t- T& k$ m% c- M7 F
]; Y$ q" d# w8 k% s) B3 B% c9 ]
set [local-reputation] of myself (local)
3 d3 J  T3 H7 ]3 c3 K% D$ u& yend. a' D, O* Z, H5 _: ?# m
. u) |& a0 `; v1 p; N: j
to update-neighbor-total
& O7 |4 g$ d* Q" W  [0 x( s% R7 _! o+ l" a5 K/ `  p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 l, H) z/ ^. d7 ^0 N
0 I2 P% l4 I1 z6 t

  ^3 ]4 l. L' ^end" P- M  R2 U( Y. b% s

! R( S- Z1 j3 y% N+ |to update-credibility-ijl , d" E6 A5 o" r" q4 {3 @4 [. H

6 N  s* q3 ]& l: H# D, w( ^7 B;;
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。2 `' I; o; d# y
let l 01 K8 X$ e& k; o, c7 o( P9 x/ V
while[ l < people ]
0 O% \6 q. K4 c6 h0 {# K' F+ a9 Y- U;;
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
% P0 |9 u, P4 U* A( w[1 C: S/ l/ p3 C% P- J% y- f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), g( `2 m. t2 M2 `8 z
if (trade-record-one-j-l-len > 3)
; Q6 S. \4 @5 S( \  Z% k[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
& m7 J) L- i9 i# tlet i 3; ]' N, I/ x- m# p) a/ T! P; b3 p
let sum-time 0# H* X; X. C8 E' Q' I4 w
while[i < trade-record-one-len]% p* C! s+ R7 p) c( n
[  }9 J5 {# E/ S3 m: u+ e' k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: K5 t" x- L: y. A6 \set i0 Y/ j0 P( |% o. b
( i + 1)
  c0 e" P+ g  R! z0 j! p
]: {  s2 B5 t/ J/ S
let credibility-i-j-l 0) h3 ~$ K5 H5 ~" E5 t0 n
;;i
评价(jjl的评价)/ x/ M5 p8 z" k
let j 34 M, D; ~* M1 ^! z# o. l: @, Y- s
let k 4' D$ C! v' T) D3 ^
while[j < trade-record-one-len]8 N5 R. K0 A3 \1 S
[# ]. G7 D) p! y" `7 G# F0 s
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
* b) e; N3 Z% \1 L* M/ h' w9 Xset 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)
& [* E, |' r9 [3 Qset j4 v& W  U, o( m8 J& ~
( j + 1)
; ~* X! H# ^$ R1 m
]
, `1 t1 N4 `& Yset [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 ))
& G5 s7 {+ m/ b5 H5 E1 R6 X+ z2 k& N. \5 e2 {3 V' ~
# d* f+ ~% g4 F4 s: l. D( J  J: T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 K1 ?) `+ P& V, R;;
及时更新il的评价质量的评价8 @# L# ^" z; G9 F2 U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  ]' D1 r9 O. x5 S9 L6 v$ l; U8 m9 J2 I" oset l (l + 1)
0 {& R7 R% w, U0 m. ]]) M: n% o2 Y  s" m- L
end& Q. I/ v) _0 b& J% ^

' |& _7 v" }$ O' cto update-credibility-list
# [, e- }0 k, [7 K0 _: ^let i 0" X$ }) Q( a/ l! x# p( X7 j* P
while[i < people]
% j* L; Q* {0 I' D! P. f[5 d7 m. ~: x" a  q" f! t7 R3 t: t7 f
let j 0
" U+ N. m% N& q& hlet note 0+ D8 v! m! u9 Z0 H: V5 E2 v
let k 02 Y2 E! ~: [7 u: o
;;
计作出过评价的邻居节点的数目
+ s6 q. y# s; y% h0 N8 F# b0 qwhile[j < people]
9 ^* C- n, {* X% h/ }) Z0 y[" I2 Q: [0 D. p$ q" Z4 F% h
if (item j( [credibility] of turtle (i + 1)) != -1)7 F' T, M" S6 f
;;
判断是否给本turtle的评价质量做出过评价的节点! }  ^  @" H( B$ D0 j
[set note (note + item j ([credibility]of turtle (i + 1)))
* ^) n) H1 I" E6 X;;*(exp (-(people - 2)))/(people - 2))]
  q- Z0 y1 D3 F) }0 i# o, o
set k (k + 1); r; U; E2 Q+ L8 E: ]% d1 S7 l
]: G# W& P# d$ K6 ]; P
set j (j + 1)
, j2 r) P! v  T) p0 J* V  n]" j! l7 i4 Y3 n
set note (note *(exp (- (1 / k)))/ k): X+ j8 _% c) h1 S) K' ]! t+ h
set credibility-list (replace-item i credibility-list note)7 l1 Q  {, n5 j  \& u
set i (i + 1)
+ @7 l$ S2 a% R: p]& \0 {; d: l" O  k& U9 K4 I
end, D/ ^3 I8 H; P* K+ s) x
: q( `# p) K* h7 b& p# P
to update-global-reputation-list# ~0 p# w) Y! F5 M
let j 0
+ x4 d; V* O4 G1 J8 t0 Qwhile[j < people]' o1 t7 l5 a7 |' w0 m, J* ?
[- g- B$ ]: `, `0 z
let new 08 D' b0 y- r/ }, q+ w3 i* r6 b' Y
;;
暂存新的一个全局声誉/ ]  Y' {0 ?( i' ~- l
let i 01 y9 M; Y: `; f8 _& O
let sum-money 04 \8 G5 n, q0 E/ Z9 W: m' v
let credibility-money 02 U( l9 e8 J3 x
while [i < people]! I8 Q: @# K. S& ^4 a# w/ m/ [
[
0 d4 l9 U) s( M+ Y; cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ G7 T* ^8 L8 V, ~6 N" jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). m/ E2 S1 n& u# a0 j& E7 y
set i (i + 1); ~% |) E& `! B( O
]
0 J9 u. \9 P' h3 vlet k 04 u4 g5 ], M8 D/ ^1 z5 A
let new1 0/ P, Q1 f4 q' t) G3 h% ]8 T5 H
while [k < people]
; @' }4 d* f  p$ R9 e! n* Z[
3 r# g+ c+ A% ^$ j! kset 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)7 ~; [4 T6 q% M* \
set k (k + 1)
0 x! H% M- w0 N2 B3 Y" j]: i. i2 `$ b! B  n8 g/ e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( ?! v1 z( ~: zset global-reputation-list (replace-item j global-reputation-list new)
, a4 k  ?/ R% l! Uset j (j + 1)! b: s$ B. a1 p5 N, H% u
]
; k( F& Z' G: r. ]2 j* ]end
" L" `! R5 a% p: Z4 u5 v7 ^- ^. e

6 K  ]9 Q6 M$ ]) d7 C
- |8 q% L" t1 N: kto get-color' v8 u$ D) n8 l% @: Y( m

! R  c4 g0 D& k' z  v3 A3 oset color blue
' w" d* p8 k3 _, t/ y. \
end" m6 N6 o9 N! |7 q; s6 M3 m) C

" f7 n7 q" o9 R2 Fto poll-class
, Q9 [# b6 d7 L3 g. Q4 I3 j, pend
( z. G$ t1 _- G3 v; ^2 [9 @3 F, w' l' i  X+ s& q; X( X
to setup-plot1
( ]" n" ?. P/ h1 W
" ?6 o7 O( ~; T) T' w2 L4 jset-current-plot "Trends-of-Local-reputation"

! U8 X/ E1 h6 W: J' G2 X. }1 R9 G( ]) ^7 `
set-plot-x-range 0 xmax

! j* b/ s' q# w% U" w/ v* L
2 a: Q$ U8 u* L# K" Hset-plot-y-range 0.0 ymax

; B4 S9 X! y3 f0 qend5 o* E4 L; z' ^8 ~
) ~. I( {  A3 R, z& r
to setup-plot2
, T8 {, l7 j/ [4 w
& Y0 p8 F! _* W9 dset-current-plot "Trends-of-global-reputation"

4 w6 w, c3 G: S% j0 U$ V
9 e2 U; e3 k, o. b% I* a& B& zset-plot-x-range 0 xmax
. q) B! ~' v: Z  M4 w

: C  f. q' J" Rset-plot-y-range 0.0 ymax

+ ]. m  l5 ?: a: eend# u( x- c& i& c" A9 h, ]

/ j- B. T. X' Lto setup-plot3, |& H5 W% I: k) v1 }  }7 t

* l. t8 b) o3 o# q8 k% Aset-current-plot "Trends-of-credibility"
- _. g0 I7 I/ {6 F+ ]  |

! g3 H6 E4 X  c. P, i7 D# pset-plot-x-range 0 xmax
7 X* y! V; ^- g7 D# F5 ~
5 i% o1 m( @. |5 g9 p4 d- `
set-plot-y-range 0.0 ymax

/ `" V* N' m6 S' c) s: Mend: g- K4 A$ F* x5 d

# {! i  G7 P" i- q. R6 \- ]; nto do-plots
( o4 ~+ f+ Q) V7 [) lset-current-plot "Trends-of-Local-reputation"! h2 F$ X- d4 A6 H, W5 F
set-current-plot-pen "Honest service"
4 y7 {, G3 [* K* m, [end4 W( u* l: F8 \! h

  L% q& e0 ~# W: K[ 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.
. \+ e0 o/ K$ m5 J* \% W1 G
5 t/ T% b# l9 W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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