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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 X9 q2 k! f2 V- C) H% H/ \1 W9 Oto do-business
1 }9 e9 b, Z  o2 E1 \ rt random 3608 w/ ]& J7 `# U4 b6 }
fd 1
0 M% C3 A5 x1 g+ c3 V: ] ifelse(other turtles-here != nobody)[( B' N& D8 V$ x
   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.. X; M2 U8 X3 H+ n
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 V# _$ b5 O. H$ k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  e5 w+ m. H- ^. M3 p7 f   set [trade-record-one-len] of self length [trade-record-one] of self
+ _* u5 ]0 @/ b2 D" f   set trade-record-current( list (timer) (random money-upper-limit))6 R, u' H0 ^  T$ F
/ p% g! p8 D' ~# Y, o
问题的提示如下:
# z4 |7 R3 x% S: J) Q# i- T% d6 H4 W, \9 ?2 j& m+ C
error while turtle 50 running OF in procedure DO-BUSINESS# X8 a/ r- {- {: R6 k8 g3 `! |
  called by procedure GO
( O4 H) z( @3 m, M! u& p4 H2 POF expected input to be a turtle agentset or turtle but got NOBODY instead.
# {! O  {" k* ~& P! W
(halted running of go)
, a0 l5 o: r# q/ s) }) S
, d! z+ J5 B5 g& M. \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~~- C1 |6 B6 V5 f+ J) k2 z: T1 m* s
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
% y& H2 }$ B- o$ q7 q- Iglobals[
% O2 B; I7 F0 y+ F& x6 |& ]xmax+ {+ p. c/ h. F$ j
ymax
. K4 `  E% {2 p  c) dglobal-reputation-list# O! u' [7 P+ N8 s* y

7 J' ~6 j& s/ ]4 }8 [, F1 I;;
每一个turtle的全局声誉都存在此LIST
) T) M2 u2 |5 V2 l2 Xcredibility-list
! z8 G. m. J4 B;;
每一个turtle的评价可信度& W* k! M- O0 l# `8 }9 |1 N5 ~- R
honest-service
0 D7 [+ T6 n$ d( a/ \0 xunhonest-service  g/ y9 {/ S& m& Y' N
oscillation
4 q1 y6 ?9 h9 nrand-dynamic
4 t0 P. ?4 h' X* `+ _]
/ _- u, ~. F/ L$ T; g/ _0 }/ h3 _$ s& g; o
turtles-own[
) M- C; {' |3 e) i; dtrade-record-all
6 Q  h0 J, v& ^/ c. O;;a list of lists,
trade-record-one组成
' z. t# |( w6 v/ ztrade-record-one2 o; R5 `- ?/ r; C" e) t+ A9 Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 }* P! g& f0 \/ ]1 U/ {; B' ?: c
+ C' k7 U3 M; k
;;[
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]]; l8 Y, g; u9 U" \  R
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]: J3 h2 ~4 W' W, l) f
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
- B- P8 x7 Y6 g) H: V& ]+ q, ^' pneighbor-total, Z& Z- V4 I7 j8 o9 A6 x
;;
记录该turtle的邻居节点的数目' |- G* c# ]. {- Z4 g$ y- A  i
trade-time0 ?  M. u3 R- z) N
;;
当前发生交易的turtle的交易时间
# N/ n( K, h6 q/ rappraise-give9 J* {) {8 h+ p6 w
;;
当前发生交易时给出的评价5 k2 E" @9 H" ~3 D, p4 i
appraise-receive) l) b! _% A6 |# h% ~; D/ n
;;
当前发生交易时收到的评价
: l5 H5 r! U# Q0 z* Sappraise-time/ p  B6 p2 |) v" \
;;
当前发生交易时的评价时间
+ L) D4 l/ {: N: R& X* o5 V! H, Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉4 ]$ y4 O3 t) @5 v' ]4 n
trade-times-total
9 d) A4 p" ~* K+ B- t: s" C;;
与当前turtle的交易总次数
+ y* g% h, F2 l) B8 ktrade-money-total: V; S; b; l$ s& q. y5 _# r5 b3 S# V+ `
;;
与当前turtle的交易总金额5 P8 ~# s9 l4 l" C# j+ `, _8 a
local-reputation
' x, E( W% k& v4 {global-reputation
5 B# ]* o0 U0 f" lcredibility7 ^5 `; ]' L0 \2 p) ?
;;
评价可信度,每次交易后都需要更新
0 u2 j% G/ C' Y+ t6 ~4 ccredibility-all
/ f. W! W3 _, ]2 S8 ?;;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7 f0 T9 `, o9 l2 R" L! b! p% H1 _

( J& |& \6 x0 `;;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
+ y5 c. n3 C- u# s' ^# i; ecredibility-one9 T1 ^: b- ?3 k) J4 k: t% k6 ~; C. 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
6 @  f* @! b3 t  Y' Sglobal-proportion2 M4 c0 ?" ^! P! p
customer% B$ ~/ \1 k. ~% w8 q8 g; d
customer-no
5 x' ]7 b1 G, c! ^* X* `trust-ok7 g, s! l, l- k! H
trade-record-one-len;;trade-record-one的长度7 k3 w# u4 K4 t1 |1 B; `- [
]5 K# a! _- T$ p$ X( Z6 [
; j6 F$ X/ O' T; V. h
;;setup procedure$ r$ I5 B( r  z( \
8 [1 E1 r, `7 |# @) }3 V- Q4 W  q
to setup
6 E8 `$ M& G! X. ~1 U
, ?/ g7 v# b8 _: G0 z9 J  \+ Y0 G. pca
) j" T0 r( ?" r4 V4 s

8 c6 M8 O/ C2 j/ B8 K3 @- J2 Oinitialize-settings
7 U0 K- o1 F# ]4 t% g

( U: b5 H# {  g, \% wcrt people [setup-turtles]
; a+ v9 {3 w& M( q$ J8 t

8 E3 ]" a! `" E# {. c, nreset-timer
( K# S3 ^' T5 s5 m+ B
4 ~1 ^$ Q  J3 n* Q% Z* c
poll-class

9 L+ I5 f$ M4 d; `) z: `/ |& h0 v, U% F* e' `# m  |$ B2 k
setup-plots
( p4 B: C' U/ J& t, ~( i% R8 i

* G7 X3 i1 g' m6 C( }do-plots

' m% U! H( A$ P1 @end3 ~$ w, A7 B5 t' H
( n; w' q7 K0 f/ K$ i% w. ?8 r6 B2 |6 ?
to initialize-settings# Y2 g; |% s# Z) M. L- h% |9 Q

" M# i- j+ n! R* D( `set global-reputation-list []
% ^" Z! K9 r$ V% T- g
8 U5 [4 N5 ]$ l/ F
set credibility-list n-values people [0.5]
# e8 ]6 w/ x5 u% @

( e+ Z3 t4 j5 k9 z; _$ Bset honest-service 0
0 k3 M, g5 E/ c  i
/ H# E% _, y! y( Z
set unhonest-service 0
3 i/ k) C% _' @  _  s

2 c" v% K' E) `" ?5 R' n! dset oscillation 0

, [" ?* w$ M. w; f) T: x  w
: A/ F/ `6 _  C0 }  U% Qset rand-dynamic 0
, K( n$ P1 H5 C! O7 K$ c9 b. E3 p
end4 W: Z' e' C/ b+ m. b& `" r* N

5 }) b+ A" m6 K) Uto setup-turtles
3 t4 J# M# ~9 v; C/ E' Iset shape "person"& y7 w& x, e1 G6 F. k. l
setxy random-xcor random-ycor
, p" E6 R. N  `set trade-record-one []0 a+ I7 ~) V6 |/ \0 L

: T4 E- _2 w: P" |3 P% Mset trade-record-all n-values people [(list (? + 1) 0 0)]
" N$ i- F/ z4 s5 P1 D2 E% T# i

% K& F; H; S: O. u/ Dset trade-record-current []) N8 B# O6 W% s9 V& |& ^. j& I
set credibility-receive []
% Q7 q) Z/ ^, N$ s0 t1 Xset local-reputation 0.5, l: I! v* L1 X9 k5 Q* A
set neighbor-total 09 Y& F2 m+ a0 W) r
set trade-times-total 03 z  Z) D) I+ v3 m/ @. n  @
set trade-money-total 0
/ ]/ M$ l% A2 l. n& P9 _set customer nobody
' ?+ p5 d; `8 c$ zset credibility-all n-values people [creat-credibility]
/ R. ]6 R" K! i( A. eset credibility n-values people [-1]% r  R- H, ?( X. _6 l
get-color
* i0 Y7 x8 V+ c0 q, a
. s& e8 u5 j7 k. _$ r  ]4 p, f
end% ]! l( K; {# Q3 I/ U, q

; }: |+ z- f5 Y' _! `) |to-report creat-credibility, D* _- ^& S, R2 d  s0 x( U
report n-values people [0.5]
! e: K$ A* P( x2 G; Oend
9 |6 o3 m8 g3 R6 D& t. i' Q& _% A
  |2 D8 V- b6 G& K$ y+ J: ato setup-plots0 @' R6 E5 l# ^' T% l$ ^% X. D
9 Q+ y; M' x1 w
set xmax 30

- m4 T! \# @7 M% Z0 U1 J3 z
4 e+ H& o9 A+ ?$ }8 [% o! X3 tset ymax 1.0
" K8 f/ U, K: R( O0 Q6 c+ }

4 u' x$ I) i3 e7 Oclear-all-plots
" \1 c- M, |2 e

" {. D0 l+ X$ p6 I% d; ssetup-plot1
, D# D; D  o" T2 R
- f- W3 `7 q+ s& k* H4 ~8 d
setup-plot2
% A- Z% g) d; Q2 V1 R" O
1 `" O( a3 m+ B
setup-plot3

- W6 \/ L8 S* x+ _end1 R- x, c; ^8 O+ n% @* y! F7 V
3 L" z2 ^2 j, C: E9 l0 ~
;;run time procedures
7 p* Y1 `* Q9 g6 r9 d9 G! z* D* s) R8 K
to go
) h$ _& c" R7 U6 G  u, g
4 O& {7 Z2 O+ ~, O+ S" c" Bask turtles [do-business]
& x' t( W- y' C1 W3 \& g
end& Y% i( P! C% u) S3 L' w4 c5 h# ~

3 [9 W7 Q2 T. ~5 q% v( Rto do-business ( r, g* M7 g, R" v1 c
/ D9 ^7 r9 u7 M; [- k. @
  w$ `3 P4 A9 B
rt random 360

4 k4 I8 ~' b3 Q
' r! Q: V" ?+ ]( tfd 1

! I, b5 l! v6 g& M4 c3 q6 `- h! E, V
ifelse(other turtles-here != nobody)[

6 l0 j7 d  t5 p% L- P1 l' B) E
( P, j9 u' u2 \" Qset customer one-of other turtles-here
- X' S5 ]9 w' U; G1 {$ a

! i0 ]; m4 b6 _$ n;; set [customer] of customer myself

# h; Z  R  N! D- g5 J) d
9 @# o2 q' Q0 s) |. M; q5 gset [trade-record-one] of self item (([who] of customer) - 1)0 i  V. K  i& e
[trade-record-all]of self3 [5 k! p" {5 c0 Q0 y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: L0 u/ `1 Q; g. X0 v7 l9 C" V, |" k
set [trade-record-one] of customer item (([who] of self) - 1)" J* |1 l  R6 U
[trade-record-all]of customer
7 d- R) a; F7 a% ^& o- n* E- X

* [) R1 z8 q# F0 yset [trade-record-one-len] of self length [trade-record-one] of self
7 ?+ u# r. u7 I6 {! z; s) H
0 ~0 ?0 o1 D+ A( c& Z2 w
set trade-record-current( list (timer) (random money-upper-limit))
3 W% v) E/ i4 l  D9 I4 q& ]
" R$ F# J% N- I4 Q* n
ask self [do-trust]8 H6 r% W& W2 W3 ~* H
;;
先求ij的信任度
2 O3 @0 d$ a& }3 N6 N( M7 n
7 x; _- a+ W) i7 N/ u7 t& Jif ([trust-ok] of self)
  N, K2 l" x/ k8 M! D+ p;;
根据ij的信任度来决定是否与j进行交易[
$ N& x) D, K! z4 b0 dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* F7 Z9 H- Z0 u5 B0 Q$ o$ D' d7 p
" t7 ~( F$ b7 D" a  q( c
[
2 F; b- M! S$ {- N2 S$ M! U
! a6 F" r0 s! }) ]3 L) [
do-trade

( J  M! h% S5 b) F
' R0 J! S: N5 l6 ~2 eupdate-credibility-ijl
' s# H% w% {" Y2 `/ W8 D+ B$ \9 [9 m
8 s& F& t( r2 i( s# Y! J
update-credibility-list6 V5 S  g; @% _- g# d6 u

/ Q! D5 c7 E6 y4 H: K! C1 g- N. U+ l# o! {( h- M$ N3 l
update-global-reputation-list
9 q8 i6 T* ^3 Y0 r! {7 l
7 u$ j7 l) v8 c
poll-class
& V1 v+ Q. [, M; ?1 |

. A9 h) {$ Q+ j) I  n. jget-color
0 p. T" G& P1 b2 F. z

) T: p7 \/ r- w9 g* `]]
  J' q; B2 o. X- |9 ?. U+ W  R2 f6 O, j
;;
如果所得的信任度满足条件,则进行交易) X3 J+ z6 `  G( z( P* o
+ j4 m; T. h0 N+ d3 l. ~% O
[

4 X5 u; \. S/ L! E/ A. k) p5 @. S! ]8 r
rt random 360

; E% u; X2 w! H
8 M% r) ]) ]% Q5 n8 U) P# N3 t" jfd 1

" p; l, L$ v0 g4 L. r( |$ i( L! c0 ^7 m- Y
]

+ D/ N3 ]- O/ n; |
  n7 ]6 i. E7 c- T6 ?# S7 z! k5 Iend
2 k, m/ D6 B" v9 ^
: ~' v& k( J5 |% p
to do-trust & s" R4 r8 L/ z
set trust-ok False
9 H* N* ?* Z2 k+ J
1 U, R6 C- B7 Q/ E/ ?2 R

3 e: C- k; }+ W0 V1 Q! ilet max-trade-times 0. g3 b! _& C2 i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. k# n1 \6 Z: h4 `$ Qlet max-trade-money 0
+ j$ |. o! o6 O2 {0 F: Y% x- fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; @; z4 y- R- x' H- D, b
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ c6 d2 H# }+ q; Y) B6 `( C" A4 F; n/ ^, B8 }$ e

0 V% z# o8 O! C0 Y8 iget-global-proportion
+ c; ^' S* P8 @# Qlet trust-value# Z0 T) j5 W9 N1 A
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)

  l$ ?+ l" Z& g2 Vif(trust-value > trade-trust-value)) `  A- E: u) p9 i, o7 A+ D
[set trust-ok true]4 Q- T5 m+ f$ j7 g
end+ X; ~3 u$ ?$ n5 M* M

  G  f% j7 a4 t7 m7 N* dto get-global-proportion) n: f, ?$ `: A4 q8 {: H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! K& {8 ^3 M' a
[set global-proportion 0]! H. ~( i# \& {8 r' t. M# g( a
[let i 0/ j* P2 I& Y0 j+ C8 N
let sum-money 0
0 K7 O) m6 \0 o* m" t1 N6 f4 `while[ i < people]
% ]8 `- R# ?3 F, k[' p" z; d* s5 n" e: K; V
if( length (item i" b# K- p7 o) s: d6 B6 n- E
[trade-record-all] of customer) > 3 )

. M$ L' E: M# K% F[+ ^3 j% ^) Y. V7 I7 X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; S5 f" E6 l( T/ [& t]9 }$ a9 [8 Y8 R8 ?+ ^" Q
]- }6 {6 U5 r# ?4 n
let j 0
: Z1 |; ^4 E6 @8 A7 y+ Jlet note 0: ~( ?# N# a' z/ Z+ l+ G
while[ j < people]' S- c4 g  R; {+ r( k/ Z
[
, H; j! g: z  ^% mif( length (item i- l! j5 C7 `; q
[trade-record-all] of customer) > 3 )

, m2 [! U$ H: f9 I[/ F# t7 b( S# ^7 ?; o2 k3 T, X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 |2 l. W# T7 k5 J* p# D% A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  Q1 _% b, I" T" h/ Z$ R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 p) _; m3 M4 c
]
4 b0 G* K) w7 O/ j]% a2 f3 S8 k" P& D8 x) K8 H
set global-proportion note
& I# B- o5 i- h1 n# a) v5 e]
! c9 `% P) A9 dend+ f4 b3 O1 G9 t' L, z& w
4 Z: z3 _7 o4 w3 _0 }8 ]
to do-trade
7 d! h0 a$ t# @/ Y3 b6 {( k;;
这个过程实际上是给双方作出评价的过程$ T0 u0 J1 F9 x9 z* B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ r- y% I# J. ?+ s: h* G" [6 Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 v8 e7 l8 Y# b! ^$ X% \set trade-record-current lput(timer) trade-record-current
% X5 k( g# `# z8 Z: L+ s$ \;;
评价时间
/ R. x' D/ z; w4 i# \  Aask myself [
! M  m( `$ T8 S( ^9 }" v0 Oupdate-local-reputation, w) Q- C+ H8 `% R* u( f$ B
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 ?! K9 t$ [3 @# z/ j# \3 Y]
2 i8 G) z$ V/ r( L' K! z. I) Eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 C  N+ G7 y" n( W/ ^$ q
;;
将此次交易的记录加入到trade-record-one. c. q% S/ S2 P" R" t3 t' W: K
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); V$ f$ h% Y. [9 l& [2 k
let note (item 2 trade-record-current )2 _7 ^) ]( b# G3 {: a; ?& r
set trade-record-current
* Y$ w$ q; G9 B' E& }) b(replace-item 2 trade-record-current (item 3 trade-record-current))
8 m  P& [* A: f6 _9 M# X
set trade-record-current
# x( t; `, V4 f2 H4 W4 ?/ a: x(replace-item 3 trade-record-current note)3 X4 k7 t3 l" o1 P( V' Q

( f) X' O9 M1 ?
6 ]/ C0 E( F& X4 p3 B
ask customer [: O/ N: v" _" z& ]. s- G9 [
update-local-reputation
. S+ n) Y  a) o6 y/ }set trade-record-current
/ \+ f! x( p8 m! [6 i3 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 @5 x3 j: v% Q  {  w% G- Y1 ]" T]
* o; [( t- t( p) J- `5 ^7 Q$ s' _. }" N/ }/ ?3 l4 [1 V6 G

$ y& i/ v' L: E  A$ `. J1 K) v, [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 Q& M: G" Y4 d/ [3 \
/ }  J! l$ `; y2 o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 m, l7 N5 Q6 w1 B( f  g# @+ ?;;
将此次交易的记录加入到customertrade-record-all- ]( e; i4 ]- a0 @  r" O  r
end% W5 G) c4 y. b

, i+ \9 P+ b7 L. e0 Nto update-local-reputation
- X% O0 x* n- r" |; w: g" gset [trade-record-one-len] of myself length [trade-record-one] of myself
/ Q: c2 `$ w, e3 X* T! I
2 t& @0 S* O4 E; [. s5 V5 U* r0 @" {& b1 x& X: d
;;if [trade-record-one-len] of myself > 3
: A+ H; h8 D0 y1 z' z6 d
update-neighbor-total
' K2 S  e- J0 J6 {;;
更新邻居节点的数目,在此进行
% o# I) D: _8 M  P7 `, Q/ w0 nlet i 3
  j1 N+ ?( ?/ v* b3 tlet sum-time 0
' y2 c' a+ J% O# `1 Vwhile[i < [trade-record-one-len] of myself]" O4 R/ L% x& |) S) w
[$ T" g7 C  L5 k; n. z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 v4 }' r$ ]4 n, i& l
set i
# o6 N# w' w+ Q& I- f( i + 1)
7 k# k9 [) M0 {  h3 y
]) o2 |" H4 E8 m# y: j
let j 3
6 V4 U' J  X2 O- |- `. g$ g$ Alet sum-money 0
/ @* v' k8 R5 g2 X% L0 W, Bwhile[j < [trade-record-one-len] of myself]
' y& W( |6 F  H[7 a: w. U/ g+ t, J! E$ v& Y1 C
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)
2 j, b1 u; A! T. z! W5 Oset j0 r" a! W; z) D# A+ X! c) F: T
( j + 1)

4 a1 M  F6 q& P" |8 c2 y5 C  s]! I  R3 C1 g% w" V. N+ x* h
let k 36 D4 I2 ^. @1 ?# V' ^1 `* J
let power 0
& ?% \5 p& J1 K: |9 l- _! O  i, e2 ~let local 0- G( j) v& H$ F* W
while [k <[trade-record-one-len] of myself]; k" e. x) o# @  o
[: l/ q+ N9 t2 ]% U- b
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) # O/ s! |! l- \' \/ w
set k (k + 1)
8 `  e  M* J8 P# X+ y$ q: a7 W]9 l$ _, J) t* V7 h/ O8 O
set [local-reputation] of myself (local)
* n: j$ w  p% m+ g0 gend8 g3 C2 G8 F; T9 e2 }7 w
) I0 K/ N9 A" y1 D* [+ F; c
to update-neighbor-total$ U. T4 v  e' w& g4 Z% w7 R
" }& @+ D( I. Q$ s5 z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& g3 H* d" t! ^  F# ?+ D/ h. D
. k) U- k" \! K8 O6 n0 }' x! @. o3 e

0 @% ^" @% x% g8 {0 }end  O; {+ {7 F5 t. e( ]7 L4 D  F1 G

/ b& v6 M3 _% ], c7 q% Jto update-credibility-ijl 9 U: {3 e0 H: N: p  r
2 g8 N* d/ C) }' H
;;
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。
7 u+ M1 m' {1 T* Zlet l 0& f6 F0 B0 R/ b% V3 Q- u9 a
while[ l < people ]
8 y+ z, ?7 C0 k# |. @" T4 d* r;;
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
) l! i6 _+ ?3 l1 {: y% j[
& I' X% e$ t5 @2 v; F" T+ _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# @7 k& V, i5 I9 z8 q
if (trade-record-one-j-l-len > 3)6 b1 E; n* v8 y- j6 s' t6 L
[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
4 O/ d$ [9 m. j5 H; zlet i 3
  A) B9 w+ p/ x0 {' q' p2 elet sum-time 0
: b4 l5 V3 p' d, w6 V' Swhile[i < trade-record-one-len]
9 Y. G; e2 g8 s9 ?, _6 H; U[
! C# O; X% @; F! \set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 p% X7 j8 z: _" v% L1 qset i. A" d0 {- Q; l
( i + 1)
2 O3 h3 t$ a+ e- L; X6 _
]
/ f! I8 F6 |, j+ L' F" y. @7 r5 m* xlet credibility-i-j-l 0
* B  B6 o: q* v;;i
评价(jjl的评价); s. `5 c8 B8 [& p5 {
let j 34 A6 `3 \- k& j3 K0 D5 \8 T6 g
let k 4& M% v( i" R9 H2 n
while[j < trade-record-one-len]: X. h- I3 e' V: [! g3 Z, z3 C
[9 ~$ @# y3 A$ t2 B( v- N
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
/ ~0 g; I1 f3 Q5 E+ _, jset 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)
$ _0 o: q- O7 c. ]4 Rset j: b: H3 j- O4 {+ }! U3 k
( j + 1)
) \2 O% |) D9 h; X4 G$ C9 i
]6 V+ J8 V% z- b4 f6 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 ))
) w4 K$ u/ Y& r! A! \
  g9 p8 r4 ^5 B/ T! [3 L

' x( e( U; V2 f6 f2 \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) [9 Z7 K; T. _* ^* H;;
及时更新il的评价质量的评价
, \) w2 b  ^. k4 ^set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ c  R, V7 M2 Z4 ^9 G3 @set l (l + 1)" b/ h( R, P! `" I& O4 \' M2 `
]- S4 e7 z1 w& a0 J
end+ ]5 q3 D% u+ {& Q% _- Y5 J

$ P4 j* p5 L: m6 [! L& z% S5 F0 Lto update-credibility-list: T8 U* X$ B/ |. H/ z8 Z8 {
let i 0: [  ^( T/ I! I4 z# ^/ w
while[i < people]( Q. P+ E+ @5 p3 P7 @+ k7 I
[0 ^3 _" K* X* c2 k# @+ `6 |
let j 0
  B1 }" d) y0 H* t: i( |1 blet note 04 H) j2 I9 u0 g) i7 c: o: F
let k 0
# e2 Y# H$ y6 g( ~9 G! T;;
计作出过评价的邻居节点的数目* y  C0 O7 h7 y4 I
while[j < people]
$ q7 J4 O( D# `& G. V[$ e) k0 T& Z, ~8 {" x
if (item j( [credibility] of turtle (i + 1)) != -1)
4 R2 g' h8 y1 a8 @2 };;
判断是否给本turtle的评价质量做出过评价的节点7 V4 f) A7 U9 `2 L- z5 n
[set note (note + item j ([credibility]of turtle (i + 1)))
7 G- f! z# D9 p! l8 l;;*(exp (-(people - 2)))/(people - 2))]

) b  i( b& W5 o  m, l8 B2 L2 aset k (k + 1)
  Z4 v6 Q  q: a$ o]( k2 L' B) [# Q4 v% k" \
set j (j + 1)
, X" ~: y  ]! F6 b]
& T# {- d! W5 B$ a; \set note (note *(exp (- (1 / k)))/ k)
9 g, u6 o; `- G! D+ `& C- Uset credibility-list (replace-item i credibility-list note); b. L& z! H$ Y8 N. F: o
set i (i + 1)
+ |$ \  F# [9 B/ m0 f]
( m" n* x5 Z0 `! J! V0 [end
( B: ^7 ]9 v- p: h% x5 W/ t8 y
0 A5 P. l1 Q% d) |7 n  i2 |$ P: Fto update-global-reputation-list% l" j7 N9 f1 {# \" z
let j 0
6 W2 S9 t1 l, @' qwhile[j < people]
8 H6 T/ [( w; F+ i% }[2 D/ H4 P- [5 C4 W
let new 0
- O( B7 g1 J! ?0 d3 N9 Z;;
暂存新的一个全局声誉6 \$ A- G: l( U& T% Y
let i 0
( ^& k) O& @' x6 p8 S/ Wlet sum-money 0# }- C8 ?) y7 I; @9 u# X  o6 A* e- h- C
let credibility-money 0
- y; j5 D3 q' ]& h: Y0 awhile [i < people]. [. O0 U: B' ^7 |: ]: w( o6 K: g
[
# d/ y; _# f3 Q: I* Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" L* y+ J  D6 M/ P7 S: I: Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  j; m0 V* O/ \. w+ w
set i (i + 1)
; k1 d5 y- ]7 i, O2 C3 t2 X0 @]
$ b) g( s/ E2 }" k3 h6 P/ F9 ilet k 08 h  x& r8 I; m3 D
let new1 0! ]% B' ]* }$ ]' d. B1 q: Z( \& |6 w
while [k < people]
# z' s" J5 ?/ }/ S7 l6 o[
! k! s. \& U2 Gset 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)
. C9 l! l$ j1 Uset k (k + 1)
' \* p, U* I- J) Z, E0 M! F  _8 g]
7 S# c, \4 }+ l* gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 o  B( M6 }1 Y' i9 F8 A$ U
set global-reputation-list (replace-item j global-reputation-list new)
( ~5 ^0 R% D; K+ Iset j (j + 1)
5 ^$ x+ ~2 U2 [3 H/ k]1 H% U% Q, l( |- c# r
end
) f" M, l+ f4 y3 t8 I  g& u5 u; ?4 O! ~/ @3 A" t6 b5 }, [

1 K* O! ^% b6 O1 W5 i2 _2 L6 m0 H; j7 Q( F
to get-color
( ^/ ]7 w, N6 A& r' A2 H
2 Y" [' j2 f3 |# ?+ ]  hset color blue

$ o' s5 l  ~* Y; \: Vend4 D  `4 P: N& p' V% u  j& Y2 Z

6 z# ]  `) Q( \1 O, Pto poll-class
8 p8 I6 R3 t$ }/ t, `+ Wend6 R. ]$ E. B* S0 h& j: S. x6 p
7 s& B( o2 D& D8 G- `5 k7 j
to setup-plot1" R+ w* R* }1 Y5 @# x  T: k

+ ~; f6 {5 ]( M3 b4 V& S2 k3 oset-current-plot "Trends-of-Local-reputation"
) P9 {9 q5 G. o; X+ j' F" \) S8 a+ Y7 j+ q

( R8 V5 W+ D4 c3 I3 |set-plot-x-range 0 xmax

) }6 D4 r2 k0 e9 ?1 W0 F; q  j
- @+ Z! ~- J' z8 n8 [7 sset-plot-y-range 0.0 ymax

0 N$ B: Z9 B0 oend. s8 ^0 z! F" m8 M3 u4 d

" m, t; H3 ]; F( w4 M" l% sto setup-plot2
1 K% T$ f" G- k" k8 l
3 ^/ d3 v) V; {set-current-plot "Trends-of-global-reputation"
4 {$ s) C2 q# D% o& n) G

# j" S4 h3 c- K: X' xset-plot-x-range 0 xmax
5 n+ }" O( U, v  a. m, \$ t
% ~! n( w1 ]# v% H2 q
set-plot-y-range 0.0 ymax
3 O8 r6 q" R8 O
end
& Z- {; p$ F5 |; Q, e- Z/ D" C
% {: K8 X9 V; W' c8 |% H' K; w$ l' yto setup-plot3" ]& B0 F' \9 Z8 h; `. M4 T
! Z4 r7 h! @6 _5 a
set-current-plot "Trends-of-credibility"
! m9 e) f5 e( E# X8 e
) W$ i5 s# ]5 q9 b
set-plot-x-range 0 xmax
4 _, q: t: K, M1 o2 U2 `
( Z( C+ W" l) n0 V3 Y0 ^
set-plot-y-range 0.0 ymax
* U$ H4 c8 W" ^' ^$ ]8 V# h
end
+ n7 j) o, s' }( g+ [$ H$ i( k4 y0 S7 h. W4 C' D/ s8 g& @
to do-plots# J$ ^8 H  t4 P. [; K7 ?
set-current-plot "Trends-of-Local-reputation"
7 v1 q" w3 G6 o6 xset-current-plot-pen "Honest service"
, Z7 _8 R9 ^7 K2 Nend# \7 S9 _7 w4 }( ^7 u

% T9 P, K- Q& Y; F* [) i[ 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.1 w& C) o5 b7 |% C
) B7 e) R& ?7 w3 D3 I/ p
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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