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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:) k+ ]/ Z) f& C9 {# ~
to do-business
( B7 N. P. p; @+ K! h. B rt random 360
6 ?# ^2 `. b4 _# h7 O3 g4 H+ Q fd 1
8 Q3 i+ U& S9 @5 s3 o5 f3 { ifelse(other turtles-here != nobody)[1 l( z8 C, I" h5 J
   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.5 o( L# o; q2 L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 e0 Q# k& V# s$ W) [
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, Y0 U/ H2 X4 U+ v$ ]
   set [trade-record-one-len] of self length [trade-record-one] of self
5 u; s/ n7 A& I+ ~- |" ]! M: C   set trade-record-current( list (timer) (random money-upper-limit))
- W8 j% {( n! }' p9 Y1 f
6 D  k8 J: H& M7 V问题的提示如下:( b6 ]/ b( [8 Y9 A* Q% K
, H1 L% K8 g/ ~/ f/ i, S
error while turtle 50 running OF in procedure DO-BUSINESS0 b% ^' j# U5 j- R* k: T
  called by procedure GO
, g4 n/ R# _1 g* U$ {0 yOF expected input to be a turtle agentset or turtle but got NOBODY instead., f6 i5 Z5 H$ }) z8 P/ I: z
(halted running of go)
1 z# B+ O7 f9 V4 V& t- q$ F+ l" |( }9 \$ v$ @
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~~3 U5 x! ~- D$ j  [; Q
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( v6 y6 y! j  U3 A
globals[6 d  {- {5 X9 B4 U: t& i9 @
xmax7 _& D* F, p9 Z# ~5 {: d9 ^
ymax; V; ^/ ~, m+ @  b
global-reputation-list$ U# V* c9 A+ z  V; [2 H
# W: r( |% R/ n3 e+ Z
;;
每一个turtle的全局声誉都存在此LIST
, i8 K$ i% A. s, Y+ j2 rcredibility-list
2 C& U4 f3 h; H$ @4 X0 V;;
每一个turtle的评价可信度
% j* X" _& {' \1 t1 S; }  b- h- }2 S% chonest-service; l) |- x+ j4 M3 M; v+ ]1 t
unhonest-service* X/ r6 n+ c" |0 [! w/ c
oscillation
1 ]: f9 }0 Z, B" Y& r+ Prand-dynamic
( L( ~+ e( j# }$ []
( t4 U6 s: q5 d/ A  c# ]5 ~9 T9 n
. h4 v7 w; s2 Y. K; ~9 Rturtles-own[
: t5 `, ]3 I$ Xtrade-record-all3 D5 ]; r* Z9 g" a+ f
;;a list of lists,
trade-record-one组成/ R6 [0 j* }3 `, n: Q, e
trade-record-one
" v/ x' g( N$ t/ {0 b;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ i. P* h2 w) [$ a- ?
( Z6 }  b, o3 m: u% S+ _
;;[
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]]' \7 W' J0 c, \& G
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]0 o/ G% E  N# z+ A' W) E
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/ M3 f& I, x7 V; [* {
neighbor-total
( X6 C! Q" d9 y9 K( ^" S# b;;
记录该turtle的邻居节点的数目8 w  m& z8 c. g5 [5 w4 B
trade-time
; s+ Z/ @/ }! W* ^;;
当前发生交易的turtle的交易时间
. @& P1 i1 I6 \6 v/ E' iappraise-give! ]0 z1 t  q& A/ n4 A& b$ `* y
;;
当前发生交易时给出的评价7 v' `6 U# ]/ [( i% [
appraise-receive
6 y! M# n" @6 @& D( _) v" j0 Z;;
当前发生交易时收到的评价/ l- r- D' a# e" P: x5 e: {
appraise-time
% V% K& |" ?) w6 E* z7 h; ~;;
当前发生交易时的评价时间
" i8 v' {* m5 @! _5 olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 C; R, k6 h( wtrade-times-total5 h2 i4 ~* T5 w% h: p
;;
与当前turtle的交易总次数8 y0 J4 ]& V* A! ?; e
trade-money-total
: g+ M7 ?' Y1 x  T1 C3 w;;
与当前turtle的交易总金额
3 S2 T: Y8 ~0 _; R$ Clocal-reputation
- z  n2 t/ {- h9 ^8 O  `: Bglobal-reputation/ h# @, b/ {1 h7 p4 Y' G5 ~
credibility
6 x1 F6 W0 n9 r; ?" O( C! q4 ?* E;;
评价可信度,每次交易后都需要更新
# |+ Q; }. v% Vcredibility-all* r- i  |* S: y# e( _7 J8 b
;;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% Z  w+ d0 U3 S3 p( j5 ]/ x4 W
8 K, t3 f5 \  K
;;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
7 R' a+ Z* e& r( dcredibility-one# R4 ^+ f6 f- V, m, m
;;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
# K; |2 c' j/ ~' a- ]global-proportion
+ L* u% \5 ]- Z7 Ycustomer5 ]+ P0 _, R! l- t
customer-no7 o# [: Z: G8 ]1 d
trust-ok
" n. z( c. C; Z, R1 Atrade-record-one-len;;trade-record-one的长度
5 z" s, H) I& |* Y! E4 S]( p, B1 n# U$ ~% P9 x
! w1 b; p) j9 c3 P* W& K
;;setup procedure
1 A. [0 @& }6 W
0 k& U& p2 P/ i7 }0 c1 ^! t8 f. C9 [) Kto setup
  i; G6 X/ p1 |% m" z' h
, d+ P" W( B2 ?0 |9 g3 u1 Aca

% T6 ?. y8 T9 n# N9 o9 |
+ Z, e5 D+ e' ?. M+ }5 ]initialize-settings

1 {' n1 M  n; {  D
3 i7 ]1 X" j2 Q* Q; q+ r6 c  jcrt people [setup-turtles]

. a/ n, n! C  k7 n/ r8 G) n/ M% O& i- Q+ F% m( R
reset-timer
( {  ~, e/ ~) K

4 F2 N/ T8 t, K; a2 ^$ Lpoll-class
" l! ]: T  I/ N& }. [/ W

; A) \3 L$ q8 @. @# T. ^$ N( Lsetup-plots

! X; {/ n) p* g! h3 m
* a0 q* [) E3 l; [do-plots
( R! p" ~& s' Z1 L2 V/ E  a, ^
end9 D7 p( z( R9 j$ }' l
. O2 J6 }% {0 l8 G
to initialize-settings
! I7 D0 U% w4 o; r7 R: w
) J. e7 x) Y9 aset global-reputation-list []

$ ?' M; I/ k3 f  r9 P
  [% p+ p+ u6 G. K: f" Gset credibility-list n-values people [0.5]

3 `6 L, {! O% b+ e- k) c2 U) {, m
set honest-service 0
4 x  f$ b( s# R1 }

# ~2 {9 K, N% S, H+ Tset unhonest-service 0
7 [0 H2 X! {# x: o
& l5 n1 e9 h. h0 c$ R. K
set oscillation 0

% ~9 ?1 D' p* @9 s+ D& D- u$ b9 Q& e9 T4 g
set rand-dynamic 0

, P( _7 G4 S6 y6 v6 |end
8 s! x/ O8 n, }
4 U4 @, \+ {! t" lto setup-turtles ) a1 u2 E  v' K% U* V1 [
set shape "person"1 N- z" p$ d' Z. P
setxy random-xcor random-ycor
9 q4 p( o- ]. e8 ?' Z& X3 z8 Cset trade-record-one []
0 g$ I% c! R6 U5 e$ a) `

. n6 A$ i; S1 E  l7 Rset trade-record-all n-values people [(list (? + 1) 0 0)] ( w1 T2 e& W. j  U0 ?8 \( G0 P

5 s, r1 t; d" Tset trade-record-current []
( E1 f7 O" b. ?set credibility-receive []( T! q  s  M5 L/ ~
set local-reputation 0.5
$ H6 z9 C; |0 f  S2 B9 G2 Kset neighbor-total 0% |0 D  u$ c- U0 O' V. [' n
set trade-times-total 0# Q& w" W( w4 M. v! M
set trade-money-total 0
0 N! l: q6 C4 e9 ?4 ~set customer nobody
6 _% |& O, I: I! R$ x9 eset credibility-all n-values people [creat-credibility]
- I/ r/ i, f* \7 w8 q0 d; |set credibility n-values people [-1]# T' b% G0 Y. K# g/ x$ |% C$ \- B( z
get-color# N6 ~; L; |9 s+ u5 Z( x/ o
. l9 Q1 q/ g- \& w6 p) |' k2 L! v% ?
end' Q" V+ _/ s2 u
* ^/ Y5 {3 H( S' O* n% ^5 j
to-report creat-credibility% \  A8 ~# L$ b. F
report n-values people [0.5]  u4 a4 j, b7 v: k& @
end
2 o$ x! V4 A: O! E
% ^: e- e) n5 m9 Y6 _to setup-plots
8 c/ S- A2 Q' ]* ~' a- z
6 K% `+ L6 B) d7 [5 iset xmax 30
$ R7 H/ A0 y* i2 f
4 u1 w- Y0 g2 r! V' ~0 Q6 R
set ymax 1.0

% ^6 W; R* t: b! a$ r: R: K5 c1 p0 {6 D: R5 I8 k' G
clear-all-plots

% Q" T. Y8 F5 a" s0 H9 B# v6 m5 D0 l6 ^
setup-plot1
# t2 [$ G% w7 \" c! D' |$ n* G) t
7 [4 a9 Y6 |' d. B
setup-plot2

& e. ?0 c2 i  ?& [2 t8 g& F/ P+ d! ?$ L
setup-plot3
  x- z- t; k/ \. c: N+ y! b5 G
end+ f0 H' A0 A7 j" Y

" G; w5 R& Y3 o: e7 _: B;;run time procedures0 j: h( G) `$ ^

5 g1 K3 N) ^4 j, F* G- hto go4 X+ D/ {8 p6 u9 V& C

) x6 x! \( F- x% q% T6 sask turtles [do-business]

5 T) T  N7 b8 w6 \end
- |$ w: d5 s3 N; F+ C5 r0 D( F, n9 r8 p& J5 M8 D* a+ s
to do-business , E! l4 H& n) H' z  `) I9 E) W
. F8 d3 E6 Y& b7 d

# G- {+ q2 s8 Hrt random 360

# ^4 v, L, r9 P9 G7 A1 f$ e
; @" x' ]2 J3 {4 A4 V+ K3 C& K' lfd 1
( w' r' B- _4 T7 I3 @$ Q

$ r" Z: E- F  Y4 K6 A! N3 H0 b8 r. Jifelse(other turtles-here != nobody)[

" D3 E" Y# g5 C& u7 h5 b/ i" _
3 o' Q! D/ A3 z3 B# @set customer one-of other turtles-here
2 J/ K7 ~0 i, I3 P! H9 j6 \: @' v

" G, m9 \7 q% S) v  e" |2 i; _0 Y& s;; set [customer] of customer myself

6 }! l% |5 m9 `4 ?
: y& m- L9 @9 D- J5 sset [trade-record-one] of self item (([who] of customer) - 1)
2 E' B( V1 D- l* e2 I" {[trade-record-all]of self# X8 `  x% O+ T% ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! T3 ^7 a+ F9 \$ S
. L( c. B. _" d: T- H+ O) I6 Uset [trade-record-one] of customer item (([who] of self) - 1)
2 H" {6 B/ X) {0 n[trade-record-all]of customer
5 y3 N5 g) m( S4 f( z. o

- D% N* m, d% R& m  e0 k. Qset [trade-record-one-len] of self length [trade-record-one] of self
! K1 r. M; X4 [1 P. O
) q2 W0 l) c) j: |
set trade-record-current( list (timer) (random money-upper-limit))
# o4 l. \9 d: s& v1 l
% p8 x, y& N0 [4 }3 o: ~
ask self [do-trust]
3 Y0 ^& a- k& p6 I, @;;
先求ij的信任度
; t& n9 k0 ?: w0 _& P+ i7 W
* X* [/ k- G0 K" [- P3 Uif ([trust-ok] of self); @# I5 @+ @2 L  y& n
;;
根据ij的信任度来决定是否与j进行交易[
! U/ R& \8 u4 X5 mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 D. Y& C( m. c( b( X" m' Y& s/ G6 U/ N
[

& r2 |: s+ h* R5 Q* v( q5 T: @8 t6 q- h+ z' v# H
do-trade
" o  d( z$ ~0 n5 V  Q" M% u

6 B6 \+ I4 l) m4 \, |7 I% }0 ~) Nupdate-credibility-ijl

' @$ k5 O/ e5 ~/ E2 }% }( v" k2 e5 H2 v
update-credibility-list6 J: P! B8 h% c9 s
7 V( W+ \, D7 f

/ a; J% Y; D$ Jupdate-global-reputation-list

. N3 k/ d# R+ _0 n8 H! l: ^4 s
3 H5 I6 e4 Y( p' K$ Apoll-class
$ Y. C& N4 h! @3 `! H* P

4 u5 J* o5 e8 k  v+ }/ sget-color

9 d7 ^8 o7 V, i9 {3 X0 T0 W9 ?" W& }0 K; j
]]
+ m/ Z6 G4 t) [# u) q; X* W* ]8 F& T& _6 e. _
;;
如果所得的信任度满足条件,则进行交易  K) X) s+ g; g8 @2 z

8 v6 u. X5 G- |+ X[

7 V4 [  i7 y1 b2 Y$ {1 Z
  j5 l: P+ h1 H% o. T6 j* qrt random 360
, I' y" R1 U! v" A7 Y6 t: _
) Z+ X! h3 v1 ]
fd 1
, D$ \  M* `: v% ]( w9 {
% g" d, o$ M1 s7 d! c) p9 E% \
]

9 P* i+ R- l8 [4 {& Y* ^" }' H* _) \& E) l9 J' L
end
0 {" K( x, E) X, c9 d8 d: H6 J" K
! j, r. f+ n' O9 v  D
to do-trust
# H, B3 Z. B' t+ bset trust-ok False
4 d, M  B5 D4 Q0 y" d& C* a
4 `" W" v- F, r) N& L+ Z4 s

5 X8 @8 x7 ~6 s, t  rlet max-trade-times 0* J% u8 `% S4 ~0 Y; ^; ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 t7 ?$ E4 P  V9 x. A  ~
let max-trade-money 0: g" q' m# v9 W2 [& h1 D) t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) U) {* N1 ]0 X) r5 N) [6 X* glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 w/ P  o, c4 R# ]& f4 [% |0 ?( P
3 ?( I- B; a. i' W0 i
/ {/ Q( k# K$ F/ T2 y' n5 t/ B4 C8 q
get-global-proportion5 O) Y5 l5 C7 \  B
let trust-value5 e! t0 ~3 K( W' b9 N7 D) I
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)

+ S. T; H9 a/ O' C3 e  [if(trust-value > trade-trust-value)- d+ X3 I+ ^7 k; i
[set trust-ok true]8 l' X/ u6 M0 H1 m8 g+ Q
end
6 x6 _+ F$ t: r4 V% N# x, L0 c* x( h! z4 j) |
to get-global-proportion4 s* N$ S& W" Y2 e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% ^4 P  X/ t, r* Z/ A[set global-proportion 0]- A- ^; \( h8 i3 X2 M
[let i 0
% m( [3 ?  j7 c3 z4 M) elet sum-money 0
3 i" S' t; R6 K* Zwhile[ i < people]5 G( U4 F  O5 ], d' x! q
[
, l" a) [6 n( q% g. A# ^! g  t% Cif( length (item i# V0 e" z9 X: D' v
[trade-record-all] of customer) > 3 )

- n1 q& o$ J$ t% Q) {0 [[
: y! j9 h8 M1 b/ u7 V: w/ cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' s) ^5 {' N$ E  v]
& e6 u' z7 |" T]0 @0 d8 H7 ?5 @# ^2 T2 `7 v
let j 0
# \+ K( M* e( _2 Slet note 0$ Y/ P0 l( K) Q
while[ j < people]9 G, E) C" J" }$ S/ M7 o: x. {
[
+ u+ v8 w, `( b8 F( C. }' @if( length (item i& V. _: S" V* l0 S
[trade-record-all] of customer) > 3 )

# G- G1 A( B! y; T6 L[
2 ^3 O8 g" n$ d. pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 U. A, m4 _' n5 g9 y' b7 u3 c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- K4 J4 B( y) d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& t& T0 p/ T3 H" P/ Q2 H7 N
]. a% v& `* G$ A$ |0 i5 G
]
! E. M7 N4 K# Y& G) Iset global-proportion note+ o0 ?6 X2 h2 [6 b+ x9 A
]% n2 ~+ x5 r; a$ e' O& J
end
- i4 P/ F$ F5 I8 ?; R$ [' d7 ]/ p$ [& _5 M% H4 E
to do-trade
2 K6 J7 A! H4 O& K) N;;
这个过程实际上是给双方作出评价的过程
4 x4 T2 U/ Y) u" f5 t; aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; L& o9 g1 _! A2 h. O7 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# Q2 f* r% Z  O9 r
set trade-record-current lput(timer) trade-record-current5 }  M" \+ d+ a# j( k! C
;;
评价时间9 W3 T, `$ Z0 U0 v' |7 p/ Z
ask myself [
  o8 H: K, c, n, fupdate-local-reputation4 E. y0 R4 F7 E9 [% w
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 g. v# d* r2 @: o7 |9 q7 O]. T, T5 d" N+ n0 p& B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, M6 }( P7 N& V! z/ [* _;;
将此次交易的记录加入到trade-record-one/ Y; P; E( b( K3 N6 U1 }# C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- k  L- }3 ~5 u" o+ W7 s4 K+ `let note (item 2 trade-record-current )9 k8 d/ G# ^" z( M, ~/ N
set trade-record-current
; G# s' I  d( b0 V* e(replace-item 2 trade-record-current (item 3 trade-record-current))

& l9 A+ e0 p6 V  Cset trade-record-current& J; k1 P. \; j' T; b
(replace-item 3 trade-record-current note)  t) T9 N  y8 j
3 Z* `: w, v9 }* ]

- ~. ?0 }. C. u: o9 Y' B7 B' ~! w% fask customer [, @: B: b4 y. M4 o; K$ t
update-local-reputation8 d% A! j# V% T9 D: {4 N
set trade-record-current
! ^/ s3 u. D5 g' V- Y& Y4 w(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 d/ O2 C& i- w7 q7 g& T]
) Y3 X) R' g" z' Y( G  W
5 ]/ p. V' _8 ^* n0 T
2 D/ b6 `6 }( r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 A  r! l2 T; B( ?( A6 ?* |- B

! V# q: J4 B! Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 d! N9 e' ^. Y9 d+ J4 e
;;
将此次交易的记录加入到customertrade-record-all
! q& o  Q5 t2 C+ S: e4 ?end
; o& r8 I5 w$ H0 i4 S
! |+ U4 e, s5 p) v0 Ato update-local-reputation" g. {& U! i% Z
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 }% r: C* s% I* ], @& y, X1 z1 _, b  S! f
3 Q. ]9 a3 }1 r6 F, I, L8 Z7 ~
;;if [trade-record-one-len] of myself > 3

- C) s" E( U+ m0 v% fupdate-neighbor-total+ n* V; M8 n, {! W
;;
更新邻居节点的数目,在此进行
. R" o3 w4 U) d- mlet i 3& K: c4 s" o+ ?
let sum-time 09 r; l  ~& j8 T, B0 i$ L/ K, B
while[i < [trade-record-one-len] of myself]
4 B; T4 L/ ^  O7 M[
! j; M# ]* _1 M) ?; Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* c7 b7 i+ f; ^3 P* o$ P# s) V: K* D
set i
) u. Z: b' [% y( i + 1)
* B+ k) Z6 m% }. ^. I2 f
]. W# w, O, u: a3 v# a' l
let j 3
2 n/ O& Z! l; Xlet sum-money 0
. ~# x/ k. m" G2 Ewhile[j < [trade-record-one-len] of myself]
6 H2 b, Z! l1 M/ ?  L[
4 w6 N1 e* Q5 ]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)
" I1 h8 F7 l) Q; H, G$ M( Kset j
; z1 @  K$ A8 H2 Z- m( j + 1)
; s/ H/ \" T  i  C
]
2 m8 R5 C2 H6 k- e+ {let k 3
* |6 j! |+ k( {6 h, @6 R3 `let power 0- }  N8 m3 d+ b8 V+ }( O# p" `
let local 0
: ^' O+ d' L( @$ ^while [k <[trade-record-one-len] of myself]9 A/ f# h4 U. {- ]7 u! D: a, h
[
, S6 g( ?& n' P0 {8 O* Y) ~! Z5 V3 Gset 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) % \2 O# S( A- {3 Y: N
set k (k + 1), M) K5 l$ b* h+ O$ S  |
]
# M* a+ v. r, B  x' B' X, \set [local-reputation] of myself (local)+ L: S/ H1 X; m6 X' a4 j4 f
end: o" I2 h  e, P3 I9 s, b
: j; ?% E* ]$ M6 L* n
to update-neighbor-total& }; e5 m2 h, C; Z" t

0 u" X( ]$ y5 U: l: X- I6 Q$ R2 H( W- uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" Z+ L6 r' W2 e
% n4 R+ [  e6 k
* v& c( ]  p% g  K
end
- c5 v. e" P% n# F/ R! E8 l
6 n* @8 V0 \, U0 ?3 X6 ^+ m; Bto update-credibility-ijl ! f; y2 o7 C9 v7 ~4 ]$ d

* K  b, Y: G+ g: W! r9 d;;
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。
9 O3 N* j3 C; w! S$ u- [let l 0
: @/ {9 a8 m5 U* Z, V, uwhile[ l < people ]
9 x# A" B- ?1 P! J, m) J;;
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. S; W5 b# d/ M3 K' G  W5 s  Z
[
: ~  t; `0 o: |# f7 _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' Q+ f7 l2 d! f- l0 `1 L* X
if (trade-record-one-j-l-len > 3)- v+ P' l2 n8 h, N) 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-one9 A! p" T( `: w# z8 H: v) w
let i 31 Y9 E0 E6 o4 B3 x  Z6 r  E2 z' N# a
let sum-time 0
$ G- u( U# F5 v1 J) m# k0 gwhile[i < trade-record-one-len]  E: s& F# O" X0 S2 K3 G
[% R$ w& p6 V) L/ ]: r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 R2 z6 I1 F$ ^0 C& d( [
set i
+ p+ e! I( g; W/ D7 p$ U( i + 1)

& u/ f7 t1 j4 @+ v$ p]0 [4 }" ]. t' i* {2 o0 Y
let credibility-i-j-l 0
* E% Y) Z% |+ x;;i
评价(jjl的评价)
( y  w4 ^3 {8 ^3 R& E( G7 l9 ~let j 3
: V2 D5 z; |) n7 k; \  _+ `+ U" ulet k 4% ~  J4 `7 S. G8 V
while[j < trade-record-one-len]
# l/ T- [. q& @9 ^[
8 D) w& W; q4 V$ q% s& ^# \3 Wwhile [((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
; g* g7 O5 k) V! ?; P8 gset 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)
* e0 i4 n8 E2 }/ r' n$ u3 \; wset j
, t1 H6 K# g+ U6 N- y0 G4 F( j + 1)

: ~7 _5 `# X, H]# v# n4 q) |! Z3 L- v
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 ))2 L& U2 J6 `( v9 R$ I2 j9 Y' X
; C" f8 P) `7 N1 h3 z' m+ }3 y

- u0 u. S, R% `# S6 s3 y( }; X* `* Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, t5 o' d2 y) f;;
及时更新il的评价质量的评价
' D$ v8 z( T6 o- `, s& bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ e0 m+ Z5 F" d5 H% r6 ^5 _; @$ u
set l (l + 1)
! g/ m" a1 U- q8 |; _]
! x6 J: W" i/ x: P# K; Bend1 ^$ I9 m4 s6 D- a* o  I6 {

7 \0 o! l3 X# c& t! g8 }% \  Vto update-credibility-list; ^" P! {5 X* f. {5 y
let i 0
- G& {6 i/ P* D$ Lwhile[i < people]
0 W9 Q  @9 T( A- d  s) L2 {" V" `[
6 n" {" V' M$ H- n$ D/ f  M1 jlet j 0
& {) i1 q3 G* s+ P# Vlet note 0
  ~4 ?( z+ ~2 t- [+ ?5 jlet k 0
0 ?0 S; F4 |6 y6 A+ v! I, {3 [;;
计作出过评价的邻居节点的数目1 Y6 F0 P# z7 s
while[j < people]
; W8 Y. T9 u+ H( S  f4 h[0 Q- G9 ?; r0 R! a1 }  m" s
if (item j( [credibility] of turtle (i + 1)) != -1)$ h2 R0 _# w9 Z6 @! [$ D
;;
判断是否给本turtle的评价质量做出过评价的节点
7 c5 {; F7 z! ^" I! A[set note (note + item j ([credibility]of turtle (i + 1)))/ P" X* E; h, H* Y$ i
;;*(exp (-(people - 2)))/(people - 2))]

: \7 ?. p' f) \  Y2 N! |; U: sset k (k + 1)- o, @! J2 D! R; S  D: {* R0 T
]! U) ^+ @, G7 i$ S4 Q# b) ?
set j (j + 1)) t, [  j! O" w! _! t, ]2 r
]
2 ?* `, J6 I7 F8 ~) C' K7 {set note (note *(exp (- (1 / k)))/ k)/ Y+ M" @! S  r0 K
set credibility-list (replace-item i credibility-list note): Y6 l1 n, Q" ^0 Q
set i (i + 1): _5 o0 r7 x: D
]9 L4 U2 E3 Z4 K; d) j2 k/ }
end* n# e$ B3 F0 x: N) n/ G
/ H: V. g5 L! F! F
to update-global-reputation-list6 U* x+ K3 o. z. P/ V2 l6 V/ m2 ?
let j 01 G" V# l3 l, k3 i4 N
while[j < people]
, ~" @. D4 v, G1 N3 j, A. j; ^, y3 P# |[
4 v; ~, _( j" olet new 0
* Z" i% S) M5 }4 k& [  M' f7 |; W, D;;
暂存新的一个全局声誉
2 U& g" }5 Y$ v# g* Clet i 0% Y8 E  w" R' i* ?+ O
let sum-money 01 p0 r0 W, d3 q) i7 Q
let credibility-money 0: ~* l/ u* Y4 t- u8 f4 T
while [i < people]
* o0 Y5 F& s- E. i; V( g[2 w' X% |* B" C: W! l  g: X& c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ o; H# F# P4 w4 wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  y6 a+ w9 `( ?8 fset i (i + 1)
$ O8 }4 j8 e: m. H1 G% e]
" G; O6 N; H2 V  R2 ]. ~3 elet k 0
" }: \% S6 }- W( C1 Rlet new1 0
$ @: g1 o; Z0 t' |$ C/ r+ kwhile [k < people]
4 `9 A* _0 Q$ {( u" D. N[! z* w6 T* ?, `6 s" E' j5 x
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)1 Y+ {: H. t' E; b. i: y
set k (k + 1)0 k5 ?) `1 k  C0 W
]
$ h2 O$ v9 r, `7 N  xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( L! L6 X: d! B9 ~& d
set global-reputation-list (replace-item j global-reputation-list new)
& w; \9 Q  \! U. |+ @set j (j + 1)4 {  n  m2 l2 W+ G% u3 A' p8 f" x
]8 m2 x$ z; y; [+ G0 Q9 j) E
end
6 Y8 |5 l9 |& C: d: W+ a6 Z& D
, j3 r' R7 C, I/ a  T$ z3 p, O7 ?+ |. P4 Y5 F' @8 F

& r. n% l. `4 S! z. q* Lto get-color
& F/ W2 T* I8 w4 f/ W
! b$ a6 b; M# ~8 S3 y0 R9 oset color blue

: K$ k" u! M! X$ @9 E2 Xend0 @, b2 A- B; \5 O( ~

. u8 o$ m6 m/ x4 Z6 m2 h% l3 t$ Fto poll-class
5 \  a; J2 G- @6 w0 Fend
: y/ z, s3 R0 \2 L! X2 b9 c4 K; y8 w
to setup-plot1( C, r. g; ^$ m* E: k; Z& i( T
) Q+ W# v7 k0 T
set-current-plot "Trends-of-Local-reputation"

6 w7 s& v" H8 y- M+ w- Y8 s6 z9 _$ A+ ^( Z
set-plot-x-range 0 xmax

, u  B% l# A$ j
' I( N3 u( S1 yset-plot-y-range 0.0 ymax

- m% T$ y- H2 D  }end1 K: {* b6 f( C) C4 M

' f1 C% \$ Y* P% K$ \  \, {to setup-plot2
& l& A* V3 j+ a4 z4 K! v- L2 D; c7 y0 A9 A6 X: M  X- l7 ^
set-current-plot "Trends-of-global-reputation"

# a6 A: n+ X) E8 I  [8 l8 H5 w; }7 \
  ?) P, Q! u3 E- pset-plot-x-range 0 xmax
6 h( n, X" }% P. E7 P

7 i) R2 k+ V) r, d! \' Uset-plot-y-range 0.0 ymax

$ K8 P, M" v' L7 q) h- s! wend) x. l% w( n+ F+ J
& D  E, i; }1 `* o' R
to setup-plot3
  y4 j; D4 p5 v2 T. \& i
! t4 s# t0 g7 C. N% j2 wset-current-plot "Trends-of-credibility"
7 d, q+ [3 f( R; N, F: r" h
  ^0 G, J  O. m' x
set-plot-x-range 0 xmax
( x" ]' c4 T1 n8 Q( S) I3 G+ I
0 C7 b$ u2 {6 a! d% c9 O$ O1 z
set-plot-y-range 0.0 ymax

  x' \- i% B2 e3 Cend
! V& `6 P$ D% ?7 Z* p! `; ^* f8 ~" w3 c4 T) [, r
to do-plots
3 X2 G) l  d9 Lset-current-plot "Trends-of-Local-reputation"' P- I2 E" t# |& D- D
set-current-plot-pen "Honest service"3 j3 G2 @0 U+ z) _" K6 v, Z3 C
end
. Z6 l, v/ M4 K; S$ `
8 H+ ~, }% K# w9 \/ w[ 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 j) |* x' T# N+ Z1 Q' e- `6 k8 k8 s" P! G
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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