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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:8 `4 _, ]! [8 _0 d& C. q
to do-business 6 T8 x: {+ E2 I  O
rt random 360
! I) f% \4 H  d6 N: M/ b7 W$ a fd 1
+ g9 L, _8 I$ U8 I7 g$ ] ifelse(other turtles-here != nobody)[7 j7 A- O$ p3 }7 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.
0 ^9 W. b3 M; f( Q& D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ ~) k6 z$ Z2 S/ m' ?6 h) k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 ~4 c2 p$ r- o% R* @' o7 c" u1 k
   set [trade-record-one-len] of self length [trade-record-one] of self% X+ j8 {( R7 @3 H
   set trade-record-current( list (timer) (random money-upper-limit))
+ H$ p) t) _# p  @
8 H! X* i* p3 C5 \& s5 u4 P; B问题的提示如下:
2 _1 O" b& Q: g4 N  x
% I+ K5 X0 f+ e0 ?5 Nerror while turtle 50 running OF in procedure DO-BUSINESS; T! a1 A8 @/ l- Q, T6 j& ^
  called by procedure GO
5 c3 a( W* o- w& T4 w; M5 V/ Q. YOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" e9 J/ \0 g; \+ i1 M/ X6 z, b. o
(halted running of go)
* _! |4 C5 g& g3 \; d9 H& u
4 `% h! c0 x# ?# L  b9 `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~~
8 I) A( N. F3 s5 r% y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
! f6 J" w  _) p1 L8 Y' I& {6 a4 gglobals[  ]- f5 D& m- T7 O& t2 L
xmax
2 m' ]* E. Z+ ]" `) {1 C9 p& ?ymax
  A* o( h. b6 ?& Nglobal-reputation-list
1 u+ G( N+ _7 T& Z& F9 M& @0 T4 n0 V8 t
;;
每一个turtle的全局声誉都存在此LIST$ B" e" Y9 V$ f
credibility-list
' J* V3 n, Q2 P( [4 O;;
每一个turtle的评价可信度- d" g% [* l4 X  v0 h- ~8 K
honest-service) @$ o3 L6 {- V4 U
unhonest-service
8 K+ }6 x3 C0 koscillation
2 J( ^; l1 M' T( G: |! prand-dynamic+ \8 T) ?5 r4 H9 w: M5 b
]( B: ]! d5 u: b$ L/ ^, t% d
" b! S+ ^) T; ^! m+ [
turtles-own[
) ~7 v! e1 v8 }5 etrade-record-all
8 _3 s& E# G- v, P* p;;a list of lists,
trade-record-one组成
1 t! w2 {$ Q! Htrade-record-one
  p7 s; ~, t+ D6 O9 J;;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 i6 @2 D# k: D# f8 @5 \
3 c; E  t) b. k, c  w  b  d. 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]]
' j1 R& L  \; E- b: E. J5 L# x! \  @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$ s: F! \2 ^/ R  {( ]/ x
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
& v- {: v. V  A2 Bneighbor-total
* j3 L" e' B% {;;
记录该turtle的邻居节点的数目
& h) ~8 {9 U  N' [* Strade-time  w( ]% V2 m2 e9 d; K5 Q
;;
当前发生交易的turtle的交易时间. Z8 y  c8 D+ r
appraise-give
6 `- I% \+ ?) r& d0 r! b;;
当前发生交易时给出的评价, a9 S2 @: a- X) R0 v, {6 O
appraise-receive3 Y$ k) j5 ~$ `( ~7 I' {. ~. s
;;
当前发生交易时收到的评价5 ?. W0 `- q4 e1 T) Q
appraise-time
) ?9 y# l0 i% C  h4 |, S;;
当前发生交易时的评价时间& ]( U( ~/ Z. B3 \4 Y+ x$ e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 R* t4 c* ?  @4 n- Wtrade-times-total
% }3 ~4 {0 @# a+ U6 z- T;;
与当前turtle的交易总次数. @, h% e8 j% D
trade-money-total. ^  d/ H% I) A  Z1 Z; L# {
;;
与当前turtle的交易总金额
! v& m' j# g/ p( Plocal-reputation+ t5 n! A! n) a  D% c
global-reputation+ s7 [& J: C  ?2 @4 N: y$ ?  ~
credibility1 a. U& P& G; p
;;
评价可信度,每次交易后都需要更新
6 `9 l/ w  A2 m3 q$ U" ycredibility-all
2 O3 g( e2 B) L( f0 C9 y, {8 P;;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" C5 U2 g( U7 O  e! E
+ g7 Z' D$ ]& l
;;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) v6 H/ n+ ^" z/ n
credibility-one
; S# I, U9 Z" \. ~$ K) O8 e* c$ s# q0 r;;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! L5 V( @  y) S, l8 H% b
global-proportion
! @* @5 B) X7 S& e/ P: Jcustomer
5 M' s/ x  f: b, Mcustomer-no  }* K6 I0 q1 A4 k
trust-ok
8 D: c$ E2 l4 v- \8 ^! ?7 k: Ctrade-record-one-len;;trade-record-one的长度
5 N( q. z" E* G7 F6 e5 @. d5 \7 Q]
% o( n; S# [4 T$ P) W. ?8 I+ _* R! O+ A) t8 g+ n
;;setup procedure2 T* M9 V2 N! j' b2 q

+ c* v% V8 c1 z* i$ ~) v' {/ cto setup7 I+ I0 l: n( G
+ L) ~- Q* _/ C% B2 Y$ _/ }/ y' e8 I* H
ca
/ z4 C  f# p8 R# D$ J4 n
8 g' b9 Q% B5 M, y( L
initialize-settings
4 f0 a$ M) \* c

! c5 L- P9 F6 Z0 I# O$ s. qcrt people [setup-turtles]
" g9 B' J1 [6 k' o; g$ p- P

. v- X# N9 I) l4 m1 g7 Rreset-timer
; S8 u1 f% E& c6 W

: u9 u9 u$ Z0 f0 j$ C5 b( upoll-class

4 J6 f, {5 Z  O3 x+ F1 z" Q/ @; s; r4 V, O4 p  R# u
setup-plots

  u$ e9 n# e4 f4 Z$ K3 b- s/ E- v4 ]4 z( G% S
do-plots

" J$ F3 ~$ H, G- u; Xend
) n/ |) y4 v4 v# W5 u6 W% q
% i* q9 J# b) `0 Ato initialize-settings
8 v" Y1 v3 s3 s* z* @
4 }+ N0 k8 ]& f+ pset global-reputation-list []

& f4 d/ J' f' @+ t1 r) c* |
$ e  o4 ^/ g  {- Bset credibility-list n-values people [0.5]

- S% ?  C# N6 [8 ]5 V+ ^6 W! v$ @* D9 W$ ]' T
set honest-service 0
- ~7 V! c/ Y, y
" t& q8 Q, I8 `0 s. u
set unhonest-service 0
1 g% ?7 i+ a- q+ V

. m* @$ k7 G+ n" _set oscillation 0
% C2 t! k5 ]" q1 |. [, V0 \

3 `( r2 D; E4 Y$ {$ p$ Dset rand-dynamic 0

; R) j5 v) D% M5 F/ C" qend+ X) w$ u! Z: ~) u

4 I8 F% l# y9 t) ^to setup-turtles
/ {: G* O1 q# eset shape "person", g2 ?( {5 Y% g% H" k/ G
setxy random-xcor random-ycor
" i* j' [5 j9 T+ Oset trade-record-one []
- j0 x* K) n7 K; v$ F

& l9 p6 O( i9 D* B0 l" i5 v7 Qset trade-record-all n-values people [(list (? + 1) 0 0)] 8 U5 S1 U7 _& m* t
5 \4 a' E* o) ?4 H, K) I# [
set trade-record-current []
; \5 \% D% d6 w; }set credibility-receive []2 u+ b3 r) F5 O! J% P" K( D
set local-reputation 0.5
5 J; z* B+ K( r2 c! A& oset neighbor-total 0$ p0 v$ N# o) e0 F9 B
set trade-times-total 0
1 ?+ X- I: H: p( Q5 }4 p0 m  rset trade-money-total 0
2 A/ T/ Y, p2 B4 Z& m4 pset customer nobody
4 ]% X- p6 ?4 W1 L6 G2 _set credibility-all n-values people [creat-credibility]7 i9 x) n- Z5 x# C! l& D
set credibility n-values people [-1]
" D9 b" g* c- c7 Mget-color
! q1 X9 t1 l; Z" C
# ]3 U$ G6 U4 f. b% q) e
end
! v7 L1 c& D' o& y  y8 ^1 N. t% I
. n. G! w3 v0 R" u' F- mto-report creat-credibility. P6 g! W; M7 U! Y
report n-values people [0.5]
8 p/ N  V- v7 b7 Z  xend3 d8 I6 A; w2 O$ a8 w3 P6 A& a

; ~9 W% F/ p. ]9 Z! f. cto setup-plots1 o2 R8 v8 U  |, G
( D: ], N& ^' A. O2 c' D
set xmax 30

! O: _% Q! x  n  }8 L9 J3 z( T' \' I* d, i& t) |( J) N
set ymax 1.0
' Q( K) G/ }: z! i9 t

) u# N7 d0 q3 z% e7 M& kclear-all-plots

- y2 H2 K+ i4 Y9 v3 a& N. b; H# r& [0 V
setup-plot1
% u. ~# J7 j8 V  p0 L' U
: D! m$ }$ y% v! x: _
setup-plot2

/ @7 g) Z4 m( W
$ V+ X% X- F7 ]7 p6 Rsetup-plot3
" h# }- u* f9 F, o) y: ^4 p- B1 |
end$ ?  b% E- O, S2 L7 K

  [- y7 u. Z) e( Z;;run time procedures: E" J4 J$ l2 B/ I" n8 v; q4 w
; T; a" B# i! n# B! c) `  O: @! \& I
to go
5 S" c; R0 e0 Z, [9 s. G- ?( {9 N% y8 P
ask turtles [do-business]
- w' i' B- C/ j: x% {' l& }# w) M, c
end& X1 n+ ]. K4 @$ o8 L! P6 @

- T" C( D+ z4 M, \to do-business
1 ~6 S" t- D  u2 d

5 \2 @: O, \1 O9 r- N+ [- y6 a8 r, m) V4 o' ?" _! t
rt random 360

- z8 c. f3 h  A: C& z% J1 n
* j. u6 b7 Z6 k9 p! q! c$ r+ ?& Mfd 1
0 Q( h, Q2 Y- `9 H

8 y( h& Z; I5 T2 j. c2 r% cifelse(other turtles-here != nobody)[

- C+ N! }$ H# E. m' o1 T7 o: }% t" V
! R1 J9 X" q8 k- Uset customer one-of other turtles-here

& P, ^0 Z0 @5 A' t4 [( p  q& }
4 ?4 Y; r0 t3 @9 x- `( E;; set [customer] of customer myself
: v% I: g4 V5 y( T  [
9 \* _+ s  q" s& i" j4 c$ O" T$ x
set [trade-record-one] of self item (([who] of customer) - 1)( _. E0 i: U3 P
[trade-record-all]of self
4 ~9 d5 t% w8 O; X/ \, k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' A" h" {7 v+ L' X1 Q8 c

( k% K& X1 a) }2 \set [trade-record-one] of customer item (([who] of self) - 1)
- G( p( l7 S) j, `7 b[trade-record-all]of customer

' _# X9 F! [1 X3 i, n4 I7 V5 Z8 _3 A! E. j- m1 Y* D0 N
set [trade-record-one-len] of self length [trade-record-one] of self

8 i/ S# V* y" ]- \1 ?: _; V9 \/ W% a; F( R
set trade-record-current( list (timer) (random money-upper-limit))
( u% a8 I  j% d/ L  I
- o0 \5 K% A" O7 ~
ask self [do-trust]3 `8 j% z) I5 v& C  A: j
;;
先求ij的信任度
9 e9 `% A* Y7 H- s) t; V: w' {* F. a- C' {* Y
if ([trust-ok] of self); Z% P* l% G8 a! |% k" P6 L
;;
根据ij的信任度来决定是否与j进行交易[  i% t! {' V& {' J  {" Q0 a3 P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# G$ o; l) N% X

4 `( w& K  D2 V+ c[
4 N5 }8 Z4 n& m' d( B; t: C
% a' d1 _8 ~8 `: Z# l7 |$ w; u' H
do-trade

/ E4 I- T/ m8 D  }
  E9 h5 k: N: lupdate-credibility-ijl
+ y5 c# k. r0 ~2 Y! p# L

  w, W; f; b7 n' }4 o: ]update-credibility-list7 H7 t/ g# i: K3 @

; Q' @, q) b+ Q( Y+ l9 h( A
3 q6 U% S/ ^+ jupdate-global-reputation-list

. o* J/ ^2 i! c! S' O
( X  p1 V9 V9 M$ g8 l- X, R% Upoll-class

, P7 g$ }# x0 I0 Z. y! h5 c/ u2 y3 ^, E& O9 i4 e
get-color

1 a! ~4 F. m- f0 D3 |8 a3 {9 i
. z" a, E2 u( B/ z2 _$ g3 ^]]
4 Z2 Z( T5 j* j- T
  Z# P0 |' F2 Z& {7 z5 a5 P* @;;
如果所得的信任度满足条件,则进行交易8 {1 g2 z8 l, B7 r
- V$ y1 L% M+ C* H6 s9 N
[

6 N  z& P4 V% c. P$ v2 \" B; z% ^6 t& c: n9 {
rt random 360

& ~/ E* Z* {# @  i: r( Y7 K4 I6 Q9 h! |6 i9 ]9 w
fd 1

7 ^! t+ h8 G& t8 y/ f( [- W
* o/ l- S4 _( t! K/ D4 [9 Q8 y]

- O5 L) j3 _' C" M9 C8 G
. h  h5 N8 w* V/ J, W4 U$ Fend

' x5 O8 T" E6 D- R9 ^% o  y: L- i6 u
to do-trust
$ R+ S* ]9 z4 I/ a( P* M/ \* Jset trust-ok False; |% U4 q% H& l6 a) ?5 F, g8 U% p0 C

4 ]3 k4 U  l7 Y6 F

) c  m% u3 Z, G' s1 M" N! vlet max-trade-times 09 Q0 G8 {! ?0 N  M1 d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" Z# u! _8 I, H  `% D- H$ E8 v
let max-trade-money 0
( K( i$ ?3 S+ E/ [( j4 s1 yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ g# c/ t" H' Z! x( S& ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 |. w& |& t) Q( S" a- X  U4 r$ Y
6 r7 ^1 D8 v9 a/ D! H
get-global-proportion; H+ X5 ~- ~/ L0 ]: v* E/ b
let trust-value
6 s* R5 K0 V& Z1 H! }8 u; d  R+ dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
7 U) p) R: a1 [: z( |
if(trust-value > trade-trust-value)! n) v! ~$ s7 A+ Y
[set trust-ok true]
3 r+ [% R5 ]; _end
) r/ }- w. S) b/ T
6 w, e2 r$ ]. V6 e! B/ L, Vto get-global-proportion
% ^9 J. i$ o- E% B# hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ ]% L4 u- f- T( o& t$ h2 D[set global-proportion 0]
6 R# J% ^" w: A$ ~; L- y[let i 0
8 s" s) ?: f2 [' `9 H0 P$ }. H: olet sum-money 0  N5 ^. d  ?( [( X+ \" X3 j/ G9 Q
while[ i < people]; T0 [& Z/ f+ d, C
[
$ O: q, K! ~1 R. z4 ]8 ^  z2 Mif( length (item i" r6 r4 t8 p8 v. o  U
[trade-record-all] of customer) > 3 )
- \1 R, ~5 \9 [! B) j
[# g7 {6 v& {4 I- F4 E: H0 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 s) \$ n# g& Y, Z- o
]6 ^$ {9 |6 I" \' o
]( u" R6 @# T" Z2 G
let j 0' ^6 r, X4 d4 x4 W! q* M8 V
let note 04 M& J  \- M2 W" p& K- g
while[ j < people]9 W) @: E3 C* P' z& V
[
& }" N4 N7 K& G6 Dif( length (item i
: \, _, Y; }* `' ~/ j1 z9 h* P[trade-record-all] of customer) > 3 )
* r9 `3 B- \- f6 t2 u- u# i% O/ b
[
- |9 `, x0 X: r- f# p% u" Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 O4 f1 }- P  d+ i  l+ u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" F% W& z) [4 I7 a5 s1 K/ [[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% [2 G3 ]" ?, o1 }! v0 x3 k
]9 P& R4 L6 n  \9 a8 R
]
* X( T8 }1 ~, Z- S+ c8 Sset global-proportion note
4 B- O0 k# g6 R$ O  v]! `0 D1 B/ o. I: {
end  @4 x/ K3 v) l4 Q9 k7 i

, E4 q* A- @' o" w6 ~  [, K# Uto do-trade
* l- b, x, S2 N1 Q/ i" G;;
这个过程实际上是给双方作出评价的过程
% s5 l! _( n- }% u  E3 Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: p0 W8 r- q. m+ ]0 [( A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 ?& T' g3 t4 [5 P: {
set trade-record-current lput(timer) trade-record-current, ]1 [! D. @: g) m
;;
评价时间
0 \! d/ Y( u4 y; S6 M5 nask myself [
" a" W: B  \& M- k; mupdate-local-reputation
6 G: k9 f0 Y% ~4 x' b# }2 \set trade-record-current lput([local-reputation] of myself) trade-record-current& ^: Q) U: I9 m8 H  {( m# @2 a8 i7 x
]: N4 X0 x- X$ i3 a& s0 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! F* F# O; L3 h, f8 V1 q  S; k
;;
将此次交易的记录加入到trade-record-one
5 v' S4 Q. `# Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( f$ ~: Y. o/ U9 w. ]! ]4 Y) T1 Qlet note (item 2 trade-record-current )9 F0 G( e! t$ ]& L& x/ X: I
set trade-record-current
/ _9 v2 P8 w7 p( D3 v(replace-item 2 trade-record-current (item 3 trade-record-current))
9 n+ |" H" y$ A( q
set trade-record-current
8 q7 N4 V1 f" P# ]2 g: N$ E) B7 R4 [(replace-item 3 trade-record-current note)8 b3 M( R, U1 _. z5 ~

- Z7 c& o5 l: D/ q5 [: D+ X
6 I  L8 b7 X# H0 }
ask customer [; Q# U/ v+ W) k( K0 {6 ?
update-local-reputation
# Y1 J  h! Z1 x+ |. x  \set trade-record-current
8 T9 A% c  \: D' |% I( P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& ]1 P, o, }% c+ P; Q  G]
1 Y* k9 f. u% I; \, F
1 k$ H4 b5 \: p
% i& h6 \7 |3 e0 B- v# j' x' _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 |$ J5 D1 w/ _* l: B
2 I/ M" Q5 t( p6 `0 d" J, X1 \
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# A; w6 ]4 j0 z/ V( }
;;
将此次交易的记录加入到customertrade-record-all# A9 U& u" C5 g6 Y. V3 H# l: w; N
end
. E' o1 x  M! I6 j* H; Y; D% p+ }0 Y, Q% d& |  @/ p
to update-local-reputation' @+ E0 n8 u- T
set [trade-record-one-len] of myself length [trade-record-one] of myself
( D+ Z. N$ n5 W/ k# T
! w& ^3 }+ z- S- _+ P% h) P- ^3 I! p) Q/ p
;;if [trade-record-one-len] of myself > 3

, A) {  S8 y2 c! L6 D1 W0 Z' e2 w8 Jupdate-neighbor-total$ V/ D: O" y  [) r+ s: T
;;
更新邻居节点的数目,在此进行7 r* L# {+ a: T! \
let i 3; I( @' D  w' s8 N0 m% W
let sum-time 07 C( g9 c! G* {) X0 x
while[i < [trade-record-one-len] of myself]9 `( d  W7 _1 _+ s) a" R3 w) a
[
; w5 k5 T5 U( n& l7 iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 p/ S" W" X  w: C0 ^! f( F5 z
set i
1 D$ o9 ]- K/ H/ C6 b0 }0 W# [( i + 1)
9 Y- M" M. S+ I0 E5 @2 c7 q: h% B5 f
]
7 `* W" R3 `3 klet j 38 @1 s6 G# R7 f$ u! M9 l
let sum-money 0
- ^2 l% q; `' M$ kwhile[j < [trade-record-one-len] of myself]
; J/ G6 Z, I( D, e9 w& O) [# }1 X[' i  K# Z. ~; i! \; H' R- q
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)
, @5 l  T# ]9 H& p- Yset j
* |- ]: I# y/ [1 z( j + 1)
. O2 b5 Z7 J; k1 O: W  e* y
]
1 r" U: k" X, w: `. l" u' i6 Nlet k 3
' E- ?0 F. H: _) K$ [. x" Klet power 0. E( m! {- w5 [7 R- S
let local 0
4 K- a0 r" X- Z' Gwhile [k <[trade-record-one-len] of myself]! v- m! |" ]8 r2 u( A% ^  S
[7 d0 K1 D% z; p# O1 b5 ~
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 S' m4 k  Z$ c# Jset k (k + 1)5 j- _& O) B5 y" s! \" N
]4 x3 T- x  q. j* D! e! Y* Y0 e5 V8 M
set [local-reputation] of myself (local)
7 G1 B9 J  G2 k" ^) p; b% Yend: K  j5 p& |- T* K% F
# \+ D9 [5 r# U. m! `
to update-neighbor-total5 w* R$ `: ]$ {" E- E

4 d. a9 H9 S: f+ o% Q- s5 t* vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ s( C( @( F( n. w

. z5 I8 Q! p# R

" o+ o1 \; ?; m8 eend
* y9 d8 X* {) O5 Y/ w7 b- f9 J- I7 b0 N1 Z9 L% ]4 q) l
to update-credibility-ijl
3 {) d  k3 U2 ^5 a" G+ a" w
# J" W- {4 [8 u" Y;;
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。( p& |0 |0 p4 w- O7 k: s
let l 0
- D$ F* b, d( A, awhile[ l < people ]" J: G- A4 @2 r- V1 n
;;
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
( J( v: q3 t: j! H! \/ k[
# Z' H& [/ ]1 L4 H0 k1 E! }" x/ tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' M) ^2 A& k( ]% l( d4 u, Y: J* J& zif (trade-record-one-j-l-len > 3)4 k: a" S' J6 a2 g8 z8 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" i5 Q1 A) R& }/ Z0 s$ R  j
let i 3. K9 m, Q' p. W% s9 p# N
let sum-time 0# N& [( o: z. k: Z: [7 v
while[i < trade-record-one-len]
& Z7 c% i% M' W9 T+ B- e, q$ g[
+ I+ o8 i; h) x; iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): I6 \% T. Q: w; B/ b' i  z* P
set i: v- x. o5 w8 @
( i + 1)
" ~3 ^! L4 \4 q: k3 ?% B* M- c8 X) G% N
]
" k# b8 Z1 ^  H7 B5 plet credibility-i-j-l 0
) \. u7 a- f+ F6 g;;i
评价(jjl的评价)/ r0 u! x$ m" ?7 H8 S& L% }0 n
let j 3
( ^4 M* ?; n9 L# ylet k 4% O+ d: Q3 k) G% r+ ]. V6 l
while[j < trade-record-one-len]8 d4 d+ Y: o9 ^; h
[
, q; D# |* N3 m* s  Z+ s$ z/ }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' W3 f( Z* r7 u7 c
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)5 z4 f% Z4 |% A
set j! j  t, e1 p* ?# @. W, l
( j + 1)

2 \& ^2 n& m8 `( w* y( `]+ V7 L2 T; d% U- c& j: z$ G9 I
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 ))
& |$ l5 S$ |, u4 h- _9 J8 c! X
9 B4 p, x3 G  M" g2 b# m
  x7 B' G* h2 ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( @2 Z7 y+ a% }  q6 _
;;
及时更新il的评价质量的评价2 w0 I% y' P2 c. W4 w4 {% v3 g
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 \1 g! R3 o+ y3 rset l (l + 1). [/ G4 u0 l& k
]3 e" L8 l/ @/ R" u
end
# N( R  U0 Y- K( B" x! s2 L0 B5 d9 Q/ E- p8 ?$ V
to update-credibility-list: E0 m0 l3 \' z/ T
let i 0
1 A+ a! }2 H. I! H8 T. Rwhile[i < people]
+ U5 G  _( ?0 @% t* q7 x6 K6 x[
5 }. e1 f4 z' K9 P9 R. nlet j 0# K, z" J4 w; ~( @( ^
let note 0
$ f, F7 s3 z: t* ]! Slet k 0
% n+ E+ E0 I6 j- p;;
计作出过评价的邻居节点的数目5 g) [9 w. {( W5 o& G8 A6 Q/ O
while[j < people]
: f# }4 n; @8 H  k' y- g# R! h[
  f% s- I1 G( mif (item j( [credibility] of turtle (i + 1)) != -1)
- C0 c) w9 d. k5 R6 S8 y: U;;
判断是否给本turtle的评价质量做出过评价的节点
0 A; P# \9 _8 b5 g% a/ P: z[set note (note + item j ([credibility]of turtle (i + 1)))
/ }) P7 t' a, H1 l1 b;;*(exp (-(people - 2)))/(people - 2))]
& Q) B! \2 I) b3 B7 V& J$ P
set k (k + 1)" B1 q9 ~% [" F. k% q, j8 Y
]
( [0 S' h) G% k, c, e# _: zset j (j + 1)) e5 Y) S/ R4 ?4 T  u5 h3 G
]9 I* P% e& V7 J3 z6 `
set note (note *(exp (- (1 / k)))/ k)4 x( N5 G; q* {
set credibility-list (replace-item i credibility-list note)+ k7 T' `6 I9 {' M# @' T, c
set i (i + 1)' ~% M; |5 W: @- r
]- M. T7 `- o/ Q$ E+ j
end$ ?/ q! U/ L  C9 |2 \' V
! c" ]0 [9 z+ d4 g
to update-global-reputation-list
8 @, L# A9 b# b% f3 j: N& {- dlet j 0- X. \7 B+ h3 ?; l6 p
while[j < people]) f7 u$ S. i' J2 y5 O
[- B  t( S$ i0 i1 c2 |7 X
let new 0& U9 {& ~6 l! y) n- {
;;
暂存新的一个全局声誉
' l' E# _& G  c$ ]  Y* g: m% Wlet i 0, n" `. z/ B" k
let sum-money 0
  \& _- G3 X# c+ I; E& ?let credibility-money 0
- H- I. ?) l" [# R+ Q' `% _while [i < people]
! s9 Z  z$ ~; }  b" G[7 a- L% T8 B' g" ^
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  x0 e/ h: n5 C$ L, m4 y1 n) e
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* M; ?4 ]7 [  Q. n; H3 P
set i (i + 1)# M- l* o; s* I3 S. M! y; l
]
+ q/ _, k, w3 }: Blet k 0
# _6 q3 `+ b' h& r2 clet new1 0
9 Q8 o* n1 u/ U) }% Mwhile [k < people]! h; S% _8 C* ~9 S0 c
[
& X0 I$ l& e' W7 ?6 ~) P& D2 Qset 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)* [8 @4 p6 I3 E% v; `8 ^1 k$ c
set k (k + 1)
& Y! @+ I% ]& Y]# F; J5 p) P0 u4 e* ?! `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / Y7 t" O' R+ a1 A: W/ T
set global-reputation-list (replace-item j global-reputation-list new)( D8 K9 D& ?- G6 k0 ]; X  i' H
set j (j + 1)
5 q* }% C6 d8 h, u( }0 C]
) Z% ^: q# x3 ?3 Send
4 b8 p7 K& b' F# F! ]% X7 a' w& s8 g- g$ l  m5 P

8 h7 x; h' @2 ]! e/ b: N
) S3 S( C! h- @3 C! l9 s# [to get-color
' Z/ W! ]- F$ P9 ~& i: ^1 F! v( P- Q
set color blue
, P9 W& M( E* m3 D7 N- F7 f
end
2 d3 r" }3 Y* V; x6 N9 q# Z1 d: {! T8 p3 j6 ~4 @
to poll-class
  g  k' n+ F) \2 q9 O+ oend5 o3 u% b  f2 ~' `3 d  E& k" _/ W

% @0 h1 {$ t$ W% `4 eto setup-plot1& M, S' K1 j* x
* |# I- e9 n8 \: Z
set-current-plot "Trends-of-Local-reputation"
5 Y. N! K. R2 U/ L7 M

( T0 U( X. o, p. Z, Jset-plot-x-range 0 xmax
, u4 K8 Z+ x) ^4 E# A/ g* t4 i

0 @; Q; d* y) N. a9 A, Tset-plot-y-range 0.0 ymax

3 }$ Z- h' x* @9 n3 t: @end2 N: z* }; m3 n0 j6 y0 ?, i
+ \$ V8 q$ L: |3 [8 J! s# j
to setup-plot25 k) B$ D+ D; K$ I! c7 N

+ {) v' M: `) M6 B: D4 wset-current-plot "Trends-of-global-reputation"

/ m0 k% @/ T; v
1 T& w8 @4 e& U$ Z: R! l- k' Iset-plot-x-range 0 xmax
. e' C2 M4 h! @
) H) v4 r1 y) z4 b4 T  k9 v1 a! U
set-plot-y-range 0.0 ymax
! |% w5 i3 p# P5 D2 L
end
  D4 J2 Q4 s/ t9 S4 f: T/ ]0 d6 E  n7 `; h5 {  t& J2 ~
to setup-plot3
- ~: V" Z6 I9 L% w* Y9 x6 U# g& P7 m- s# H
set-current-plot "Trends-of-credibility"

1 I  O) _+ i1 |6 r( A
- u$ s& {0 ?: ?8 a/ q! mset-plot-x-range 0 xmax
8 I) N/ X/ M/ m+ O4 ]/ t4 _
) B9 \1 }; P' [/ p) h" J
set-plot-y-range 0.0 ymax

4 a, z2 w  v  g% I* t1 Oend
3 s' P/ F4 Z6 n: }3 C) z0 l2 C$ ^5 g4 F2 ^, A) Z- d# W  K- S' U
to do-plots
! x" l8 @: s' \& w% lset-current-plot "Trends-of-Local-reputation", b; E! ~$ Z" b7 Q4 r7 o* k
set-current-plot-pen "Honest service"- _+ a( p+ v( T) o3 k1 y' c
end
. i5 i; P5 w; x) Y0 [  \+ z' f  [: z( d# b
[ 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.8 t; G: R! ^9 n( Y2 @
" }6 y5 N# t9 Z/ t  j4 K
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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