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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:+ p7 `1 u/ K# j) L: j" h8 u
to do-business 1 R! Q; F2 l$ ^; U/ M
rt random 360
3 W4 }, x8 m- |& F, q$ N fd 1
( \6 A, P+ G# p. {2 F  s ifelse(other turtles-here != nobody)[
7 V2 p5 T3 b' n6 {4 g& y! 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.
* y4 [! |+ O# b( j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # {: ]8 q* s; m; g* E# G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 N+ l2 S4 t& t9 o! Y
   set [trade-record-one-len] of self length [trade-record-one] of self
3 I* p0 y. G5 Z  V7 m+ l; f   set trade-record-current( list (timer) (random money-upper-limit))3 F, V- S% R" Z
2 k0 f. E( k. J- p+ K
问题的提示如下:
6 B* o; m% @1 G5 N5 z- Y! V+ R0 A2 i8 E- p# q; k( m
error while turtle 50 running OF in procedure DO-BUSINESS; x% N! C8 p) Q) T4 Z% \
  called by procedure GO
( }+ W  D0 D7 q0 a" j! sOF expected input to be a turtle agentset or turtle but got NOBODY instead.% ?+ u; M+ t! C1 ]
(halted running of go)/ X' m' c9 }& E* h- s* y

+ r4 w+ p9 n5 R) e& f2 z# r7 z: y! 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~~
5 ]2 m, p  e2 |+ {+ j0 H% R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
$ V, t! Q( v8 S% b% `5 U0 aglobals[
6 R- `7 N1 b: T, Bxmax
& R1 B: I+ N" J5 {( lymax' Q- \* j5 o" L# E6 g4 K' a
global-reputation-list
& T! i  a1 z: S, i" a/ s. i4 v0 N' ~% D
;;
每一个turtle的全局声誉都存在此LIST6 e& g( w2 O- o0 p6 t
credibility-list1 M2 p) T. [$ J# K, C
;;
每一个turtle的评价可信度2 G8 {& y) a8 x. e/ w% P
honest-service3 n8 s( S2 F- Y7 q' i; C
unhonest-service' c; Y% _+ k, z) Q, U0 r6 c
oscillation# n5 B- g: @5 v8 G" o% m. M
rand-dynamic! J7 W* E! S+ m, M" `- P
]8 T1 {/ \, g1 _. v
" Z$ U# G, u8 s9 v2 A+ ?* Y8 A
turtles-own[% {+ g8 c) R* _6 G) }' I# j
trade-record-all
/ Q  z6 A  J$ z- k" o' N  g8 B;;a list of lists,
trade-record-one组成& b5 l9 q6 D2 x  I
trade-record-one( z- J8 P* J- a& b7 @6 Q  i* {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 p0 ?4 G7 ^; O- v% T5 R! s
" y' c3 K5 Q4 X5 e# U% q;;[
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]]
9 d4 Z% n" o7 ~' y! \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]- {7 X# c) J' V
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
. o/ B2 b7 Q/ R3 D2 X2 ~' aneighbor-total2 c7 [& x" ~! T
;;
记录该turtle的邻居节点的数目
# U4 t. O  a: }( H- l) [& d, otrade-time
, y# n3 W2 d' ^, s4 S;;
当前发生交易的turtle的交易时间
+ F& \* x7 C1 F7 c4 [1 tappraise-give& }8 I& p) Z9 _3 t, {' [' u
;;
当前发生交易时给出的评价
, T! a6 ], W  N1 v- Uappraise-receive9 s* P3 p( E- x
;;
当前发生交易时收到的评价
5 M9 N- M' o0 E8 a* I3 T8 _9 j( h6 Iappraise-time2 v( B% w7 h" R. m8 o  f7 `, [* u
;;
当前发生交易时的评价时间
  M* G( I4 l# a  elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" R* Y7 J9 f* S! gtrade-times-total2 A4 [" l9 h/ T
;;
与当前turtle的交易总次数8 t# t: G& O" H
trade-money-total$ L! ]# w% Z5 p" W3 W2 _
;;
与当前turtle的交易总金额8 j: n& t- x) d/ c6 ?1 D; Y
local-reputation
- p2 q* S% X0 ~$ P4 i" F& M4 d4 `& Eglobal-reputation
0 D) C3 z+ w  T# F0 N- R) h% Ccredibility
! i4 G; W" S+ k) J! h6 O( D;;
评价可信度,每次交易后都需要更新6 R: Y1 q& M, j+ s
credibility-all
. {! L. g1 I3 `;;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
$ @& L' N, ?0 f- i; \
$ j8 f) \/ `* b3 _, 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
* A: w( S' e2 ?+ acredibility-one- H& a. K5 G2 J  w
;;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+ m# Z# j  N) E; E/ G1 I
global-proportion
* D2 T+ E- A( {3 mcustomer+ O) Z# F( L" ]& K8 g2 ^3 S0 a
customer-no# S( C; b/ T- `! T
trust-ok1 Q/ Y" F* o( d! ~7 }8 l# m% h
trade-record-one-len;;trade-record-one的长度1 p$ `4 {* ~/ I. ]3 k5 g) z2 v  Y
]. |6 k& h" R5 V! i
0 D! S) J  I0 @& x' L
;;setup procedure; n! D' E8 D$ \; X
# [0 i) u0 M/ ]- A5 U: f6 q
to setup6 g2 n% [7 M2 j

  E# S% u. b; d& `ca
% q4 d+ E9 C6 |  d8 \4 f4 Y( i1 M

' D- k5 x2 N3 ^% Rinitialize-settings

# _" K% g2 D0 i  e
" ?4 B/ I% w# x# z7 u' g/ ocrt people [setup-turtles]
; j  {' m% f4 b8 o
/ D6 A7 R! X7 j! M% L( r
reset-timer

1 q5 U6 e6 ]. j6 {# x9 x9 G. o/ e2 `, P8 E) R6 Q3 T/ u! Q2 k& x
poll-class
' z& B. x3 Z) u2 Y0 s# w$ t
& V. H3 r# j' y$ W
setup-plots

; n7 N9 m, S, {0 f/ D8 r' i2 n) X! k; s: ^! ~9 K3 e! f
do-plots

: y8 z: f$ D) o; n$ Zend
8 o+ q; \- d9 ^
% [- K$ b. O" x! o1 s( a: G! xto initialize-settings+ h! W, X) j: ?' P: O9 ?/ {
. C; u- B- W- R, x# C
set global-reputation-list []
/ E5 N' x  z* {- X% k
9 {5 e# r% e8 D, ?% K- X- ^
set credibility-list n-values people [0.5]
! @2 T2 D/ \) {5 V$ s$ h3 ^! I

8 a" |$ I6 l. \5 ~0 E, r- m# dset honest-service 0
1 V7 z' G4 |! Y8 E4 k1 ]
( I) K9 T4 a& \6 B2 e
set unhonest-service 0
* p- c' M8 T6 @

3 Z% G+ x# s% l$ g* H" c! Bset oscillation 0
6 v! ~% m7 i5 E4 d! W

( m; y: v3 l5 i8 l  Lset rand-dynamic 0
; t: L9 S; }: |4 R" e- G1 b
end% X* Z) {! ]# D2 _; a; c. ~" y

# u/ f  o0 k$ v6 f& h% mto setup-turtles 8 f, D, {+ c! Z& V. j. y3 U9 [. h
set shape "person"7 R% M  p  `3 X) ^; Q
setxy random-xcor random-ycor
2 ^7 O  D5 G0 @4 u2 hset trade-record-one []5 ~+ P. h% g* h! {

1 h5 `1 _; Z9 l" q9 w, X% f' Oset trade-record-all n-values people [(list (? + 1) 0 0)] 9 Y( {& l. u( A$ N

  w- {- C# g$ L/ U8 H. o8 [5 jset trade-record-current []
! b1 L- p3 m4 R1 E% J) Xset credibility-receive []1 X( p9 `, h6 y! w! Y
set local-reputation 0.57 k% c' j* `% H# U% R8 }8 O
set neighbor-total 0  F2 O/ F% ^, J% [
set trade-times-total 0: Y! S4 b1 F% H# O: S: ]
set trade-money-total 0- f/ d% ]( S7 E  K( }9 m
set customer nobody3 @( A& @2 w  Z* q4 c
set credibility-all n-values people [creat-credibility]
& B' K# D$ I6 l. w9 K* }set credibility n-values people [-1]1 O. C& {9 S+ Z; U, G* I) O5 e+ S, H
get-color7 b- L9 g* ]- S# Z6 ~4 B
9 u6 G, j' p  Y
end) z' X& o  h" L6 M

7 X0 o9 R5 ^8 S1 V' T" [/ vto-report creat-credibility- ?: b& \8 t& f2 h' ]
report n-values people [0.5]5 {0 A& F5 {+ N1 o4 ^& x
end
8 V% G1 K, l9 A  ~
+ o7 ~% l7 L0 L# d" Xto setup-plots
* ], k/ @5 s5 _
6 S& |! {/ i6 `: U2 yset xmax 30
. X& ~- U8 Z* c) ^) u( \
9 a- B9 t$ l# p% C
set ymax 1.0

) D6 U- u7 z; V9 p  r
/ \" O' ?* a8 v9 H4 B* L* x' \: cclear-all-plots
9 `1 [! Q, o9 A7 Y
" I" Q2 }( v7 `6 {/ z- X
setup-plot1

. c- a) f5 Y, M
" z. _3 x3 h% Z+ W6 O& e/ \: Z% zsetup-plot2
& ^! U* f8 \! O

& j8 _4 r; O* h& V0 Dsetup-plot3

1 z$ R$ L6 l0 Dend* S$ ]8 e7 s, t' I9 E/ g, ~
% c; @8 k. E" \% p7 L* @
;;run time procedures
) C* n. I/ J# B# l: M: ~6 e8 R  b- ?! C+ V( C
to go- B  w- n/ y* g, h* g3 R
8 P: f! @8 b! f9 M* g% A( j# x
ask turtles [do-business]

+ r/ u+ z7 r' h0 Aend6 c, \, v' d' ^5 a- m) d

; R7 w# M" j0 D! e" ?to do-business
. U' w# S1 A( l4 z. g  A% g
  B' I6 D$ k: L1 b

4 D) B& a1 ]% lrt random 360
: o, j  o% F# G0 T% X! N- I4 O
/ ]2 t: a0 K  i% x" W0 m2 g
fd 1

: h5 y- d1 s" n
& ?9 z" `7 m, U5 Y! zifelse(other turtles-here != nobody)[

. g8 q0 T7 a& U& I3 X( k0 H, @) X- h' D3 Q( V7 H
set customer one-of other turtles-here
( g0 v5 ]/ U; v

/ @; ^& K0 v# D5 n;; set [customer] of customer myself

0 m% ^. b! m9 G( q3 \/ c
+ O0 \4 ~8 c& |0 Gset [trade-record-one] of self item (([who] of customer) - 1)! t) F, ?4 S0 q
[trade-record-all]of self; Z6 y9 Z& Z0 |  [: o1 B- t
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  C0 X" F9 L! h2 \  I. z  L% j% l  M, \  f0 W. H
set [trade-record-one] of customer item (([who] of self) - 1)
6 @% g" c" M3 e- O! g* m8 v8 ~[trade-record-all]of customer
( A# @1 M' c( v
" t: F1 F6 ?5 {; E5 f5 M
set [trade-record-one-len] of self length [trade-record-one] of self
" f% g* {4 f/ }( x

5 L5 x) g. I  K+ M- c0 J. uset trade-record-current( list (timer) (random money-upper-limit))
( ^' R$ j7 f' t

- |; w: A% V  Z8 ~0 F1 lask self [do-trust]" _1 F  ]2 C! A* z) Q4 E4 s
;;
先求ij的信任度
7 B5 Y, D4 n- d0 D# W
. b! {7 X! v/ D/ ?" d) z4 Jif ([trust-ok] of self)! g) e9 S! R6 u! `
;;
根据ij的信任度来决定是否与j进行交易[2 L+ g9 w' i, z0 R2 `" \& c5 i! y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; O% W% t. \" u- p$ c3 L

3 l' k0 {4 v/ A' y* m9 ~* a% ][
$ v7 |7 e3 j7 P+ D$ [' Q9 v
$ K% A4 h4 V" `2 _) L8 R
do-trade
! e* _) P, s; l1 k6 ]
% L! E; w0 [" l: q/ h/ y1 A
update-credibility-ijl
! s9 m  O: f9 [/ z+ L- h- Z

2 `. `% e1 G4 c+ J' Tupdate-credibility-list2 j4 y6 {8 Q! b

4 D$ |2 n2 B9 q) p: ~4 i* }% `
update-global-reputation-list

( `" a5 l. a. W9 @' F" e2 s- w" U3 a% k' I
poll-class
+ n5 S! _* \" k  b' h
! I0 L: z# H% ]
get-color
; R# B. W2 @/ G2 E- {

3 F: R- L9 G" H+ }$ x) ]]]9 H: m; h& j  v5 I  I& p" a

3 o$ A6 P/ v- y+ {8 p9 d;;
如果所得的信任度满足条件,则进行交易
5 U3 V5 p# L  \% E5 r7 @. H# F; ?* ^  p5 F3 k6 ?( S! E
[
" V9 {3 @* v* c9 @; d5 w3 U8 [& E  ]

% T+ o& b, u8 Ort random 360

% O9 F( f5 c/ `! P( |& d  C" d( `+ C0 Y4 |6 N- ^$ l2 H2 t
fd 1
9 B- I+ q: q% K6 J; X

1 y; j; [, q' W" G" F1 G" G6 n5 A]

& ~" c+ e3 Z4 X; g$ {8 Z# F
. N( z' d8 k  |, W# R! jend
3 D. `/ b$ `" g& Q# ~0 a
# a6 g* n8 H* l: I9 K7 Z
to do-trust
* N* g" C5 U9 R0 nset trust-ok False( N( k7 G( s: b4 m* Y

5 e( j: B6 u2 u" V: N1 H- b7 M7 ?
5 X' e% h3 W( o" D( L" m5 {4 z
let max-trade-times 0
! y% I, |/ g* `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 g- a& ~, g8 C% ~; A& wlet max-trade-money 0$ C4 P/ a) ~7 t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% Z: z" v3 ?5 c; t0 w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 ~. D8 |7 V& r6 r+ `1 c

, T6 y" B$ W) a1 L; ^" C; D
- y4 s6 ^+ S( r/ U- v5 q8 d
get-global-proportion. ^' R) L* ~1 M9 n
let trust-value; F) X* h& L. b
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)

0 V4 u; I' q: ^' [& {- @if(trust-value > trade-trust-value)6 ~9 G  L2 k2 m& R2 l" ^4 t
[set trust-ok true]
0 q  }# O' G2 r; d2 o8 q: m  S) lend! c7 k& }0 j# }7 Y5 b2 d
" B4 N5 ~3 H- R7 N5 K3 e7 H0 y
to get-global-proportion
9 x0 x& s3 z9 U5 Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). w9 {6 ?) O" a0 ~( R/ G$ U
[set global-proportion 0]
9 q0 H: K6 S* i3 c' w[let i 04 H3 b. j( r9 \7 n
let sum-money 0+ T! {4 C7 L- S
while[ i < people]+ {. b. {' S4 Q8 x
[0 M  k+ q4 D; Z( _9 o$ l( F" a
if( length (item i
6 G8 L3 O( @) H! O% ^/ g% b% m[trade-record-all] of customer) > 3 )

6 e; i! _! \9 |( L# o" Y% {[8 h( Q( V  r) t4 d0 K
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 r1 E% K* v  G( u8 j8 A
]
7 u* n! z) F  v# a$ W# []
4 ^  V5 J% h. ]" l4 ~let j 03 N+ Y: |4 j3 G5 N: ]3 A
let note 0
2 ]1 O% R- O6 ~. C" j8 V, lwhile[ j < people]
1 R8 x% B$ k7 I' [% [9 ~[* K: ~( x; h( t; Y# Y7 p& e% O' k
if( length (item i% H, V; i3 w' b6 w' E0 @7 e8 A
[trade-record-all] of customer) > 3 )
  O  C7 [" c. r6 M  A
[" p1 P8 T6 x* s: x1 B+ D. ?8 [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" o& g# H8 ?7 G0 N
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 y9 H5 j6 ~  s' ~7 d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 B" Z# E, i3 ^! @& F) W  _( ?( D]- _2 e$ e/ |, |# B+ J% i
]
3 v- s" y7 l4 U+ |set global-proportion note( n2 Z, Z# y; s  a9 c6 ^
]
8 ?+ V% k8 \7 send8 R* p# r$ c; j; n+ [+ Y
5 X3 F1 K) b7 W$ ~& c. D# u  z
to do-trade
# Z( b1 a1 P2 Q0 r6 ]* C3 v' @;;
这个过程实际上是给双方作出评价的过程
7 R' @  `( U  `# ?6 ], uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" D0 e+ Z- ?+ l. n6 o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) j3 c( E" \1 T# o8 Pset trade-record-current lput(timer) trade-record-current
) D3 D' p" g5 l" z' P* s;;
评价时间
; V% K/ \- L: m8 u1 Aask myself [- L$ |* ^  L7 y) B3 t  _8 ^$ r
update-local-reputation! I7 Q3 A( M7 Y$ f! W/ e9 `  a
set trade-record-current lput([local-reputation] of myself) trade-record-current
- C" f+ B$ A/ C7 F6 d4 p& h]+ J- |# |; Q( D$ K9 ^
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 A6 T" J; X5 f7 q2 [5 _! A  A( n. U5 w;;
将此次交易的记录加入到trade-record-one
% }% S; E% A/ N& d  jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 Z1 c6 h  Z: B7 m% y) olet note (item 2 trade-record-current )
& ~7 l$ [& r3 ^+ @' Q& Qset trade-record-current
; H# |4 N8 B/ n- W, T2 M- s8 }(replace-item 2 trade-record-current (item 3 trade-record-current))

* e% V- G- j! L" Y, i2 q2 B5 S! iset trade-record-current. L. u1 u# q7 a7 [
(replace-item 3 trade-record-current note)* b0 o0 w; p. a5 c% S3 w
, p5 E5 T. V$ F4 c& \
8 S+ a$ a# p8 t" f3 m/ ?3 I' \
ask customer [
0 o9 j9 {6 V2 \1 B2 Gupdate-local-reputation# n$ E& w- ~* D  o
set trade-record-current$ e. H. K# \0 A* h8 T- `* h- v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 x4 e% H  z* F+ h  Z5 K, a/ a
]
% {2 g& Q% [: [! t. u* V% {
  [. C9 Z  J9 u3 P) K
8 Y- V$ x* }( j7 H, o; m1 P" k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* a) s0 a- L8 n( {2 T, U; O
  Y: E5 _% I# W3 V1 u) l! e/ U' W# _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ J3 A8 C0 O5 h6 r! h, m2 G
;;
将此次交易的记录加入到customertrade-record-all; k$ e8 ?/ i( w
end, u- r) b3 z) R

% y* @3 D- A& G/ ^$ ^" M# tto update-local-reputation( Y. t& h- ^# h! T
set [trade-record-one-len] of myself length [trade-record-one] of myself
# `: R9 E' g& ^- Y% R( S" `- V5 h+ G
! Z' U- H/ a8 |6 b: g
;;if [trade-record-one-len] of myself > 3

9 Z8 ^+ f, r  Aupdate-neighbor-total0 R: V3 F# \) h* X
;;
更新邻居节点的数目,在此进行
# k2 ~& d# ^7 e9 Glet i 3$ W* M2 d4 c" I- i( A9 Y! S+ Q3 Q. m
let sum-time 0
) b4 U% V6 T+ T8 bwhile[i < [trade-record-one-len] of myself]
) z1 m5 A0 n1 i8 v' X: v[$ \% Z. k& t1 S9 A+ A# P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( J) i) t+ z1 g3 l; B! G) {& Kset i- [. G1 Y, V) X( b- U3 k
( i + 1)

; Q9 t) r5 z0 O( w7 A- y]1 L- l3 v7 A' v1 Q6 X
let j 3$ M) @# L8 k/ t) r, V4 y8 {) o
let sum-money 0. c' S' q# Y5 k3 X* u' c# {
while[j < [trade-record-one-len] of myself]
* H2 W. s1 Q2 Y) j[
# u, o* I4 |# J" fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) F. Z$ x8 l# p" Nset j
- N4 R9 T8 U, `( j + 1)

5 w) g" ^* s3 s]
+ P/ z8 {8 P" T# _' N) Blet k 3
0 x8 D0 k3 L0 Flet power 0
1 _, |1 w) o+ S' |  A8 W' V0 I. H1 w; Klet local 0# ]  D( `7 \" w9 [& t5 a
while [k <[trade-record-one-len] of myself]8 R: W5 W% y3 X+ S& q" W7 s
[( L$ V3 n/ ~8 i* |7 c0 x
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) + m7 h( R( x/ r- d) u* N' R
set k (k + 1)
/ ~- s+ P8 y# ?' i; a]
! C' [( W2 X; x) r( C- ^! |3 Zset [local-reputation] of myself (local)
$ P9 h, S8 q( Eend& T$ `! ]2 U' I% R8 C4 v

& h' k4 F7 d+ }; |! v$ k% \to update-neighbor-total
4 V5 c: Q& e2 y0 G) B
0 F9 C- r* |9 t6 x1 O+ pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) ^  f, L: T* o7 |; b# m+ A: n1 z; I. V( [

% \/ T1 w  Z3 P6 e# r4 a; t! dend. z9 G* `2 t) _$ `
) b# C, H% p# r; h
to update-credibility-ijl
* A* M  n' p: T0 |' t, ]; `' U+ x+ @6 S4 E
;;
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。" H/ A# z1 i% F3 E9 v% |
let l 0' E: [7 @- S2 u7 M) i; z( [7 w
while[ l < people ]' D3 r+ d$ s9 ^. e1 I
;;
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3 Q0 i9 M1 J7 T* p- ?* t. N
[
/ ?( S2 m* W1 Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  `: f9 k$ U& w' j5 ?
if (trade-record-one-j-l-len > 3)
' ?) [9 f$ ]; ?7 M3 Y8 O( Q4 r[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-one6 v* ~# W  s% J. `+ V/ I
let i 3
- x7 m; x  _  N; ~$ v; e! Flet sum-time 0
$ n; A6 H2 O6 w: R# g2 R( fwhile[i < trade-record-one-len]. M! \! K1 q' B: B
[
7 z0 ~! H. j( c: H' cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 A9 U- a% m! C& p
set i- n3 _* T1 y- m; N+ T
( i + 1)
9 t# E  A# y  x
]
5 L% v6 x$ }! clet credibility-i-j-l 0- O' e! ~6 n6 ?  g) B
;;i
评价(jjl的评价)6 t7 ^9 f3 ~. H( I: k
let j 3
8 F) ?9 n' l9 K) ~# dlet k 4
6 h' z( x0 S% X* P! x* A5 fwhile[j < trade-record-one-len]
% p* g$ G1 R% ?5 y( G! i$ J[8 `4 u/ Q( a7 G, q
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6 V+ Q& B6 a: p7 W7 U2 V& u/ D
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)3 Y# }4 u, l) B# `+ g. U3 C
set j3 J) \: B: V. V* n; |
( j + 1)

7 d- f" k9 M* n8 Y3 K) A" N]
  R: h5 K. R, u+ j. @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 ))3 l* {" r/ l' |- N
- u) w& S  m8 C# I

* D" F! Z9 ~; _+ ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ U7 j2 ?  m" P, Z2 O  r;;
及时更新il的评价质量的评价: K0 B! d0 r! |& v: s$ m2 K6 f3 m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 O$ A! r5 F9 D1 d3 Dset l (l + 1)( F  Y" Z% S# C: Z& E, G
]
2 ?5 r+ x5 U$ Z. ^5 vend/ c$ D# d, d: M0 u
) K7 N9 f$ r: g  i0 L9 ]' [
to update-credibility-list
! w& l# D: U5 {; K3 L2 G5 Olet i 0/ k3 o; l; X) Q; y2 ~0 |
while[i < people]: N! F. a. B3 @& j" R( I
[# Y7 P' \9 m) k
let j 07 K; v9 r2 X- E  ^
let note 0/ z% M5 [5 H+ j; Q
let k 0
3 H# ^- i& c/ H4 x2 f;;
计作出过评价的邻居节点的数目
7 a  e: T4 \' k8 i) u: Nwhile[j < people]
$ \8 B4 J9 u8 s; A7 Q[
- L- Y# R+ P+ \3 `if (item j( [credibility] of turtle (i + 1)) != -1)
  l. x  h8 }) J" [) x3 k$ w3 N7 y;;
判断是否给本turtle的评价质量做出过评价的节点  [! G0 @. F1 w- b  b1 y) r
[set note (note + item j ([credibility]of turtle (i + 1)))$ Q% n2 t/ K! y$ _  X# x
;;*(exp (-(people - 2)))/(people - 2))]
- ]  B; S; \+ m2 B
set k (k + 1)) C& g; h3 o% S; N% @
]
9 S8 v  J* @- j4 N+ \2 Y; |8 nset j (j + 1)( P% q9 u0 k* ~- S. e' ]
]# ~  {5 ?8 {$ Y, D' }8 Y1 H, r" ]
set note (note *(exp (- (1 / k)))/ k)
# D( d: X3 ]# K/ Tset credibility-list (replace-item i credibility-list note)9 M4 s8 f4 ^$ x' N: c
set i (i + 1)
% n* [# H7 z5 L]: m* d" ~& u7 h  h- a" m7 y. e  Y# M' V
end" N/ [; Q- U) c, a

2 Z! l- J) h! C* |# Zto update-global-reputation-list1 Z# L+ P# C) C
let j 0
" V. y. U, c& B8 {1 awhile[j < people]) y: K0 o6 Z0 K; b% ?& H7 \1 u9 O
[
( ?! g8 d9 d6 @0 qlet new 08 R  X# k8 z( W* Y! f3 D& E5 x
;;
暂存新的一个全局声誉
+ s1 o3 f$ j2 M- _/ U: blet i 0
+ e& t0 X' p, b; d! Vlet sum-money 0
: h, ^9 ]  ]4 _- ~let credibility-money 0
! I7 W% l" y6 D. @  G& ?2 qwhile [i < people]* H: E% \5 ]0 D$ F& L
[
! t1 Z  \4 C: Z* M# n: n7 iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 o$ o0 D/ [- y  D/ Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* r8 L, D4 X  y9 c: L: Vset i (i + 1)# X( w" ?3 `3 k$ _  v
]
: l0 P( t+ B3 z( D5 r% Vlet k 0# B' ]( ?; B& W. g& W' z
let new1 06 R! H9 U1 k2 N- P* q3 }5 ]
while [k < people]1 T. w6 |, ~6 q( `0 b# n4 ~
[' f; F- A9 Y* w; J
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)7 j/ e' c  A6 y: q+ {! T" F( Y' f9 H7 v
set k (k + 1)
' w* H8 ~% D$ q# Q, ~8 g6 {- i0 |]
- D6 E' p/ |2 O0 \0 nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 E& }$ S0 u( F& Dset global-reputation-list (replace-item j global-reputation-list new)9 @7 a& N6 l) @! B
set j (j + 1)
# L3 N4 F2 W) e* L) y& c]
0 J1 W. r9 L: L6 @1 Y. K. j  i1 Wend, h  h' {* G9 Z3 J
1 O+ U) {; w& t
. Y6 ?" v# K) l& o

+ r0 [+ [; V3 w- Uto get-color& E9 w* B4 H! n9 R9 o3 D

" A. B, ^3 S4 p" E- Iset color blue
8 V( V( J% u! w+ W) j" o2 v
end
9 J' S8 D$ H1 Z  H9 [* w: h+ W0 H% h( d4 E/ ]
to poll-class* i; T* r1 K# t; v! ~8 H" X
end7 l2 X- y1 s6 d7 \0 ^

& G2 e7 x  d0 [+ z1 W0 Gto setup-plot1
: a5 z! Y- t  y5 e$ n$ G0 t1 d9 B
set-current-plot "Trends-of-Local-reputation"
4 C/ ]& r3 y7 {0 V4 q
+ O! {+ Q( D  i$ e+ O+ s4 @
set-plot-x-range 0 xmax

. D* N0 q( ^/ z- o7 Z, O
$ S( G; }0 A+ D4 ]- ?set-plot-y-range 0.0 ymax

1 {4 {# j9 }4 Q4 c" wend
3 O) v: k& D* |$ M8 N1 B
2 D( q, a( A' B( L" R  R2 Ato setup-plot2
, t4 D' z5 {2 Q" L& g* i% A
. ]0 u4 |- l- @2 P$ sset-current-plot "Trends-of-global-reputation"
, x: s9 e1 M: o2 v3 \7 _1 ~3 Q
8 T$ ]. S( p' P; `
set-plot-x-range 0 xmax
$ y1 `3 e# Q5 `( c, q1 O8 s7 n

$ g! L3 N, c; C4 l, p* F6 wset-plot-y-range 0.0 ymax

1 E/ X+ E# q3 t! }/ D8 _end
- e! O  ~# ^; H4 q. y9 v9 p
' \5 v" L. I$ p+ p1 y: Z: [9 zto setup-plot3
- z# c8 n4 v5 ?  l+ T0 h9 h" [2 h
set-current-plot "Trends-of-credibility"

, z! P, Q) U( f) c' |, t
( H% N! D6 R! g- g& H: jset-plot-x-range 0 xmax

  c1 M4 o' S1 b1 w, g9 m! W5 b; z8 X3 X: G5 {$ p0 c+ c
set-plot-y-range 0.0 ymax

" c6 A( @, T+ z2 N( s/ r) g0 R- x7 eend
0 W5 H. Z/ I( s& W2 y- s. _- a8 |! g: l. K7 h* N6 D
to do-plots/ {2 W4 c7 |* J, z
set-current-plot "Trends-of-Local-reputation"$ S" v6 W3 t* a+ `! R! l
set-current-plot-pen "Honest service"  s" q  |. w# O+ {$ }; b
end
( q4 H. M5 H4 K5 Q- z3 o2 R0 |7 j9 o2 t9 G) ]. s' c! B5 @
[ 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 l9 Y3 T" l# f1 t+ D
/ z4 p) _& I: w1 U5 Y+ ?
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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