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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:7 J6 n# N  z3 @, e1 r* }7 ^
to do-business : x$ ~6 O+ d+ }) g4 _# Q
rt random 360
4 J0 k+ M- O9 {1 e$ Q. B fd 1
$ J4 `; ^5 ]. s  r5 N! ^4 I& v1 e ifelse(other turtles-here != nobody)[3 s- x9 v) h: B1 r1 C
   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.
! z* Q0 y) f8 u; K& W. e+ @8 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 c) R9 B/ \! M3 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, `+ q2 o! \* m: l; x* T/ [% J- |   set [trade-record-one-len] of self length [trade-record-one] of self
  U0 X$ H3 U* m. G8 ]   set trade-record-current( list (timer) (random money-upper-limit))& ]! O# d# n' ]! {4 b

4 `- h+ E0 O4 k3 K9 J4 b6 z问题的提示如下:
" U' d/ |% Q% N2 R
: N/ m$ {  Y' z- ]+ uerror while turtle 50 running OF in procedure DO-BUSINESS
  X# H! a/ D- F, A* C* L! i  called by procedure GO
% c3 g$ D. E9 a3 w  dOF expected input to be a turtle agentset or turtle but got NOBODY instead.  R, u* N& ~! `8 O( f$ n
(halted running of go)
4 W# ?8 u# M3 r! t# z) p3 q
: A9 w& G4 _$ E0 o3 F$ s5 Q- i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~~4 \9 M/ K' L8 i4 j; k: L
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
" O' s2 e3 A, H# h! ?globals[
3 ?) C# U# W+ |* Uxmax4 B9 P4 K# R- j3 n" R
ymax- h0 d4 I# @- c
global-reputation-list* o+ k" a2 M5 ]. z8 x

: Z5 z7 Z7 D( S0 L4 j;;
每一个turtle的全局声誉都存在此LIST
; S' T" j& w# P" m7 @credibility-list
- v5 G: I/ K/ F- I; a! |;;
每一个turtle的评价可信度
3 [' c, ~; m0 b% P; u' Y0 m- Nhonest-service
; @$ V; W3 H9 U/ R& v3 j( Nunhonest-service
1 |2 L2 Z, N% g9 q$ ioscillation% i: G) u9 [; R
rand-dynamic
# ~' e, N. k& J; D/ j]. T* k5 A1 ^  Z2 Q* `9 r

, ?5 y( J. {( n# H% }' g9 Rturtles-own[
( c. F( ~: W% `2 I( K3 }trade-record-all" h8 H" R2 ?/ V
;;a list of lists,
trade-record-one组成
+ y. C' D& I( }3 itrade-record-one
+ P5 Q, d3 K8 u/ }9 Q" N4 E' N) Y+ y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. m& E! |+ x) h! a

9 m: X8 x* z0 u) a( n1 [6 a;;[
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]]& t3 F1 ]( ]9 `6 ?; _4 W
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]# q, i. D( V" Z4 G
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' p, T( Z; E0 Q; zneighbor-total
  L5 i- n, m" g% T3 @% {$ Y0 O0 j0 Z;;
记录该turtle的邻居节点的数目
$ ~) q; \9 p9 @0 ptrade-time* i0 ?- q/ D* H
;;
当前发生交易的turtle的交易时间( R- G8 G: L2 Y) s" Q" E
appraise-give/ P2 s; m* K- A7 k2 B
;;
当前发生交易时给出的评价
6 ~9 V( i1 I# J* ?appraise-receive6 R3 b4 L2 \' g. r! \) h' C
;;
当前发生交易时收到的评价
) N+ g7 m, Z  l( \: S. ^) jappraise-time
9 C; ]" N( f, `* g+ f+ j% Z+ a4 J;;
当前发生交易时的评价时间' L1 A! X$ e$ s( R- _  R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. n/ n$ G& l0 i$ Q4 ]2 gtrade-times-total* z, r$ |: C, v8 j
;;
与当前turtle的交易总次数  u+ F7 o# {" g
trade-money-total
4 v" j: H' u7 X* }3 P;;
与当前turtle的交易总金额
& U) N8 l* |; flocal-reputation
3 V- d' p$ l; l* P4 Z$ c* zglobal-reputation
% ^* \* S7 ^- ?! `9 _3 d& S2 ]credibility
; Z3 g( U- W+ w2 `( ]- b' };;
评价可信度,每次交易后都需要更新5 {  K# j  _8 h8 F
credibility-all
% ], c/ \! O1 {7 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
7 |- L2 E, I  a) F/ P6 ]
+ T% k! u; Q& `5 Q( ];;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
& S2 ~3 f/ f( t. u; f7 A( gcredibility-one
0 l6 R% x0 s1 ]. F; L;;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# o& F& T( i7 v) b  `) P  k
global-proportion: c) }5 n" ^4 B) N
customer
( t, Y4 A0 O' m/ X" h  f0 |0 Bcustomer-no& ]) J, B4 |) s; r; p
trust-ok5 v: J% P+ \# p+ i: R6 e
trade-record-one-len;;trade-record-one的长度  b! \# y- `' t" R& J) U) W
]
$ w! s+ f2 a- L, f: G. T) X4 C, ]8 M0 P2 C  M
;;setup procedure
" W* b& I' y  l) O/ U7 {; m) j' u, |$ r9 s# ^! N
to setup0 A: T& u% V! P3 i/ D
! @" w4 m0 ~, h
ca

* j5 U" Z) }: L! E$ C" z: M0 v& f9 ?9 _8 T$ ]8 g0 C
initialize-settings

9 g5 {) t3 t# K. W+ `$ o
  M' H3 G; V- \& r* t' Kcrt people [setup-turtles]

, I7 t& ?. o& f/ d$ p0 S; g' P9 t9 ]% p: m7 E4 M
reset-timer

& W: Y) Q6 v: e+ N" j7 @: y! W
; R3 z2 L9 E& y% {  x% ^% Jpoll-class

3 i! `  n; C7 I. d
6 \! a+ f( q$ Q+ Ksetup-plots
+ R# L  b, T7 e
# x# y' I. Y) s9 K+ f
do-plots
$ _; _! ^' `- N+ d
end$ P6 ?( Q0 Q. U. J/ ^) e) W
" R0 ~2 O- g( ]! C! o' a# X
to initialize-settings
# I% ?8 o3 V2 y. o1 b' f; N6 H5 d3 O$ e: N
set global-reputation-list []

4 p5 F4 v$ [2 ^, p1 _; N- u/ W
4 d: P/ ]3 l. k, T, A! Iset credibility-list n-values people [0.5]
. ?+ \, a) ?4 J/ I. i' w! G

: u" l( t# \' Q; R1 e+ a, tset honest-service 0
6 ]8 n; v& w" i& S

+ T& n* C& E) y3 m5 u( ^# ^) Yset unhonest-service 0

) u& K. {- O8 p* X3 B! p! s* b% w3 f' Z! C% U
set oscillation 0
1 w5 E; T! F7 i0 |" l
' W+ I7 o* J6 V( z  I
set rand-dynamic 0

( J9 {. p( ?$ T5 o1 E- zend
6 W  {+ t8 g, s6 l3 j/ }% G6 F/ g+ |& G  F3 R3 e6 l8 W+ z( q
to setup-turtles
+ Q9 n/ J! f6 r8 e0 p& h1 v7 {set shape "person"
5 g8 p4 P, M5 g  \' Y5 v5 @/ ]% h& gsetxy random-xcor random-ycor
* \1 h# T3 Y3 a1 `: t6 gset trade-record-one []
. s$ u( s  J' U2 D

. X  T2 g+ l% ]. C3 L" Gset trade-record-all n-values people [(list (? + 1) 0 0)]
: `/ ^: Z" B* F8 s4 y* O
' ]9 g2 D2 Y6 \2 s: j/ _8 j
set trade-record-current []
+ M4 I9 k7 k  y) ?% w" W! Aset credibility-receive []8 y* ]' `! B2 M1 k: E/ {  Y
set local-reputation 0.5
( V2 B& K( U" U! Cset neighbor-total 0' M) t) k! w) J* o/ H
set trade-times-total 0" [& p+ i* _* h: u( C# b% o
set trade-money-total 09 [( f7 ~6 H: {' M% a
set customer nobody. y  S9 F  B. x! e  J' l
set credibility-all n-values people [creat-credibility], e4 g. c) M# _  v* ?0 a4 y
set credibility n-values people [-1]: k; p% q( ]/ I7 p# ~) @
get-color
9 c8 ]1 E. s0 R' R; v

0 v4 y& E" S% E! aend
1 M  b2 W1 C, t7 q- a& S/ C1 ^
0 ~) P2 Q. _2 J" d& M4 uto-report creat-credibility
$ E! i4 G3 t  I% y/ |& ^report n-values people [0.5]) k4 a( a; f2 I/ j
end5 @7 B+ ~2 _' [" n
2 Z# a& E7 Y8 `
to setup-plots
3 Z% y# T- M. e, [: A% _# V/ _) @, g% {8 m2 H3 l- K4 p0 \
set xmax 30
; d/ h! _% \5 e. d; \, I  ^4 m  q
: n3 n* N  K+ P1 T* X/ k0 u& D2 l
set ymax 1.0

% z( _/ }+ f: h" w4 D. {0 [" [" R' H# n8 C6 E# D
clear-all-plots
( c( [2 Z/ O* W4 ]+ X( G

  G( U# k+ t+ A. Lsetup-plot1
! n8 z! E: P/ E5 C/ `4 e

2 `/ q% E) w0 J) k) Vsetup-plot2

8 K8 Q2 H* j7 y% e7 S; ?7 h4 K- J- m4 H. y0 ~! e; k
setup-plot3

/ F2 X1 U5 E. z; Eend
. s0 I5 u: x" m3 `  {# h( ]+ F( W0 C+ q. T1 z
;;run time procedures% b5 H$ a1 n( [  V, }
$ b; C. A) S, Y" o2 d+ d
to go
/ M' B; L$ w. q! ~  X& y& M4 q! Q+ W% K0 O0 F
ask turtles [do-business]

: v0 _3 p; Z0 L4 J2 oend
2 a% D0 `3 U* l5 n8 _& }& f
9 M) w* ~1 C4 V- B* H  jto do-business " _) W& q% Q8 a7 p, v3 h3 \
& G! ^( \- F) A" I1 L" U

0 J, [/ |" U0 g* O9 z* \& ?8 E2 ort random 360

) Y0 ?+ u- t9 P: Z) ]" x( g/ |! L+ J6 H6 O* I/ K9 t
fd 1

3 G( o! e- V% o- k0 ^  N/ u0 ]: m9 _* K# a/ f/ \
ifelse(other turtles-here != nobody)[

& t0 M! j# N! \. h, G- G9 E0 ^8 `& }! O) z: `) j
set customer one-of other turtles-here

9 |8 U2 Z# Z1 t; ]) ^! H8 Z
1 e7 ^7 l' v) b# R$ }) @) E;; set [customer] of customer myself

% M& L8 ~8 f/ x4 v0 L6 Y
0 G; o8 T% ^. Y! i' @" }3 _8 Oset [trade-record-one] of self item (([who] of customer) - 1)
. O  T" B8 }9 G! {5 ^& h) h/ A[trade-record-all]of self5 J9 q( u  i6 e4 y' F. y6 O3 B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. }9 o3 U1 y- O' T+ r
7 s3 Z+ B+ c1 U. o
set [trade-record-one] of customer item (([who] of self) - 1)
7 d7 L* h6 i2 w, ~9 z+ i[trade-record-all]of customer

$ _) q: n4 C5 \2 T9 B7 D/ @6 f0 r
! L, \5 _  o9 f2 F  k9 W9 W1 Qset [trade-record-one-len] of self length [trade-record-one] of self
1 j+ M3 f* y( a6 g, Z+ t

/ F) G  g: @' U6 `/ y& L, P9 [2 u. Oset trade-record-current( list (timer) (random money-upper-limit))

! c* u; _: {( x8 @* A6 h* \' s2 H& }! x/ p: {* ~$ Q) p! G
ask self [do-trust], ~5 l2 h) `' p& E, N, M
;;
先求ij的信任度  D5 m; N$ K  F# ~8 W
4 J6 N8 {/ Y, V- L4 K
if ([trust-ok] of self)
$ h! J: V  Z, l. Z;;
根据ij的信任度来决定是否与j进行交易[/ c: h4 X2 O  S# G- k% c7 A
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ x9 \) L+ x6 I' W8 W% T

: u: M; g+ K: v2 f! r% `5 Y[
# Y1 M2 }) B( D/ p
  x7 f  }7 u* I8 }. c
do-trade
6 a* f, }5 I; x; j

# C; C* D" m$ i; e! i5 |' [7 m' w# w" xupdate-credibility-ijl
+ ]  S) o$ E+ Q4 i& D$ c
; C  k+ b, W# p( g
update-credibility-list$ W' h1 {7 w3 m* ?1 p9 l8 `
2 N' h, g, }2 s# q: v& [- u/ u# w: ~

9 V5 H3 n& a2 z2 g2 Gupdate-global-reputation-list
) o% q9 V. a; L% P- t

$ ]$ N2 P- g( N* W4 j8 bpoll-class
5 O4 D# r( g9 \9 v" i

  q9 j3 j! Q8 C& M' V. u  cget-color
+ r6 K7 k" N8 R  g7 \

0 E8 k& Q2 D3 J( ~]]
6 c7 d8 [6 s- b: \5 r! v3 f  L1 D
- ?) S9 C" a9 k. c( w- W;;
如果所得的信任度满足条件,则进行交易
: _0 ^& k6 h1 m+ b1 E6 M: r% w, R  o" A
[
* L) l9 D- A8 e6 p' p

! d* b8 ]- J, x' E6 ~$ F2 N7 b* Crt random 360
" W- V" |/ L$ M6 L1 Q
! j- }& f: P& D% f
fd 1

* [1 D% V! p, I" F
/ p! N: @) m( A& u) g; C; m]
7 j5 ^& V; Q2 n' X: k5 c7 M; j, N
; N. h1 d+ E) E( V3 _
end
! E7 U* u0 h+ u8 w! @
5 h& j5 E/ R4 F% d6 ]
to do-trust
- P* l& Q! s6 r/ L% D. qset trust-ok False# R- L. t$ S, |, z$ E

( A% s1 k0 ?; d* R

# G% t! u  ^+ C% a- I5 S5 X& ?2 V; \let max-trade-times 0- U$ M3 M' h9 M9 [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 d' U! p. {) h+ M7 H
let max-trade-money 01 e- r. ~2 G* l* Z2 j0 x8 A7 {- ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 q; W- l' z/ V8 b3 Xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 q$ X/ z7 J0 C2 f% k9 J

8 W! M+ X% Y& h: n# d
. n/ P3 Z1 q+ O, O% V  j% Z
get-global-proportion" ?' q" L& X4 c1 z. k
let trust-value
1 x( k9 g3 K7 f* X! Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

% x+ ?0 Q1 n- ~4 s0 `7 xif(trust-value > trade-trust-value)
7 ^7 U& m" }; j& d[set trust-ok true]
+ _$ A& B4 l3 i' T* Send6 J5 F" D) E' }9 R. o$ y

! c" R2 A% ?& C# Yto get-global-proportion
$ v" ]: B0 V% @9 w% u3 s, m/ _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ L5 Z5 }  C3 \
[set global-proportion 0]
4 f% j/ X7 V( @( s' X( `2 Q6 l) U[let i 0
* C# V( Q% U9 t2 q4 ^let sum-money 01 r1 d, ^$ `5 E8 m) k& E8 _
while[ i < people]( j) ^5 j, u; O- W/ j# w
[- g( |! F8 z# Q7 k
if( length (item i
, R- t8 I8 C  W: h[trade-record-all] of customer) > 3 )

* K* @1 |& W# ]- p- z1 [[
  G6 Q: @$ I# n4 E" v3 X0 Dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ f4 a' e9 Y1 E7 O
]
, N# L6 C! i4 X$ o: \' Q]' E- l& y5 A- a
let j 0
6 c; h( J) ?7 F5 ^. K! D7 Elet note 0
# `. B5 P7 Q! }2 X6 ]% swhile[ j < people]
+ ?3 A( C. J  \. ?[2 O& R; ~+ Y' ]+ b# B
if( length (item i
) @5 X" _+ x- I& M* t1 K# d0 S! o' q[trade-record-all] of customer) > 3 )

( N: I( G5 W$ L* F# W5 Z& S[
3 w2 I/ _. w# ~8 Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, b$ k. J( g, i. x  R$ s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 K6 A2 b3 d/ i& B
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) o; ?( d: Q& l. E2 p0 s]
: V" H2 ?% k6 W]
) [; `9 F$ n6 E, }1 d! pset global-proportion note
. \1 P; m1 C7 Z$ g  W1 {8 e]- X, u# R8 r7 P. l
end( a1 u5 a- {8 s# r: l/ o) n
! l- J3 i; }+ ~  \6 S6 r, v
to do-trade
: p/ w; f9 h; X  @- Z+ V;;
这个过程实际上是给双方作出评价的过程- ^, |( ?/ n5 k) P' i: o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ ~& m: m' W( K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% E$ @' K+ v" X6 n8 \4 j& r1 n( b
set trade-record-current lput(timer) trade-record-current
# e/ s- \$ s% _2 @( l, T;;
评价时间2 i2 B" u% M; m
ask myself [; X' }* R+ ~: g" D
update-local-reputation
' B# c9 d7 Y0 E. q  aset trade-record-current lput([local-reputation] of myself) trade-record-current' ?. x$ k( \5 l$ c5 Y0 k4 m
]
6 [7 z4 X8 B) Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( t5 e# A- K! U9 E1 W;;
将此次交易的记录加入到trade-record-one
" z$ x, x: b2 w5 O" `set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ {) E$ r2 u+ o
let note (item 2 trade-record-current )5 ]1 e  O$ A0 G/ g7 m
set trade-record-current3 J+ ?9 J0 k) u# K) F' A5 R
(replace-item 2 trade-record-current (item 3 trade-record-current))
) F4 n1 ]; F' }  V$ O% o
set trade-record-current
4 g( ^# X& J% c" C- b(replace-item 3 trade-record-current note)) r& |7 J7 f7 U8 H5 k

/ _5 F) C* E( u
% ?7 V# |  a( e. I  b& s  T
ask customer [6 ]; L- {+ z2 T& G% Z: D# n
update-local-reputation7 {; `3 X% ^- Q/ y9 \, P. c7 ~& y
set trade-record-current6 [) g( f% L4 E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ \! ?6 M7 N" d0 H: X]! c" j' P0 t/ C. k

$ S! S& @% ]0 r2 m' @

( u9 g& O8 _) s2 D0 e/ G2 fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! `; e; n! m8 Q9 i7 c5 v

2 U. T9 t4 a) Q  M7 ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- S& }3 Q  c3 `7 |; k;;
将此次交易的记录加入到customertrade-record-all
8 A& H* I- V' u+ c5 xend5 _5 X$ `; r+ C9 P( i

: {" T$ ~' l' F1 l5 bto update-local-reputation
6 f; k8 }6 r, `. Q; r! k  Fset [trade-record-one-len] of myself length [trade-record-one] of myself6 J  _3 Z/ G4 X  @* A
& E% [" Q( x" R9 K; C; S

0 n. i$ a" {  c. m+ C# q;;if [trade-record-one-len] of myself > 3

! |! T. j* I$ u, M9 `update-neighbor-total8 V5 {1 ]3 Y9 g9 T8 c8 o, I
;;
更新邻居节点的数目,在此进行5 m; ?" ~6 N: x8 l0 w) r5 Q
let i 3
/ v$ r( A* m! k. `8 Clet sum-time 0
% D: x& _; O* ~+ Mwhile[i < [trade-record-one-len] of myself]
, P4 p0 C+ u2 H/ a- U2 q+ u[
7 J' k9 a& q7 p% a% D# nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 Q& P0 `5 B/ Y  [2 R5 I6 \set i
9 c7 R, v& E$ U( i + 1)

( u/ g( i9 a2 I) p+ h]3 z- r  H) {& s- _) K8 `% k
let j 3
" t+ b( e2 S" a: o) `& B4 U% vlet sum-money 0
4 o  Z( w! D. L; o  Owhile[j < [trade-record-one-len] of myself]
: K" d, b$ n* z3 ^" [5 ^" U7 c* a[
1 U9 w& Q# r) L' tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
  ?+ Z: V' C( B) Fset j3 T; b' Z( [; Z2 }5 m
( j + 1)
+ B7 t$ {8 P5 n" u/ S
]) L& w( I7 l* N# Q6 o# ?& ^  q
let k 3* X1 S0 {8 M6 D! W4 g; e
let power 0
% o0 W3 c8 _! Glet local 0
# g% o5 e: D! N2 a- F6 ?while [k <[trade-record-one-len] of myself]- m" \1 B5 R3 \% ?0 B( d7 O
[
$ J, }: y( k) k/ A% 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)
5 A+ i6 Q* ]: `! f: f6 qset k (k + 1)
7 d# S2 l* d6 M" l$ q]9 t/ E8 T, P2 [& ^7 I8 d5 r" A
set [local-reputation] of myself (local)1 ^1 M- X4 I" ]+ b# `. q# v) G
end6 {; B+ Z% g: e% h. W

/ t9 A0 j3 B! j5 X/ _. l: g" cto update-neighbor-total
' I; o  M4 R! G( F- k8 f( g$ h5 Y( x3 ~5 J/ s2 P, q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 W, q8 L! O+ d5 _4 Y5 B
0 Y6 u0 {7 a. p5 |0 Q  f9 S, S
9 N) A; t/ h. H1 t" y4 }
end
1 W8 J3 \9 r$ b
: I: `) `2 N( p% J4 Kto update-credibility-ijl ; c3 R) ]  ?1 U4 v9 @; _6 ]' C, ]
0 o4 s& [& D5 n" U9 n
;;
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。
& b* O5 Q" a& p  {let l 03 h5 g; p5 N2 i' |
while[ l < people ]' W- q/ M3 e$ e' I( h7 u
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价( W" H$ P8 j3 J. ?/ a
[
2 P4 L& x% D  o: V8 E- E" wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: F- J" Y/ g- K8 j3 b' ]if (trade-record-one-j-l-len > 3)' n' V3 r# O# q% V* `/ z
[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/ F# v) t9 ^1 d4 N
let i 3
7 ^2 s$ c( {* L8 `" ?- c, u  `& h' nlet sum-time 0: r% |: ~8 b$ J0 f' W* f
while[i < trade-record-one-len]' s0 R( ~4 c1 r* k" p' I
[
; `) L( H6 k/ Zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  R9 I/ d9 M! [$ Vset i1 D$ X; o4 B, ~
( i + 1)

8 ?, C* Q9 ?5 O( ?- {: n0 c5 O]* O) U$ G, Q9 H8 M% c
let credibility-i-j-l 0
' _4 A; p: M+ I/ w- `* Z;;i
评价(jjl的评价)' q: g5 _; B0 t
let j 3$ ]1 u' S3 v! |8 L- r
let k 4/ D1 W6 r, }: u# o; m. P3 t
while[j < trade-record-one-len]
. z  L2 E/ j8 ?4 s) q[
) j, A5 ]% @0 [: o$ p9 l2 twhile [((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 s% w, I* e1 Z# ^5 Fset 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)
8 T) E" }$ d4 A0 }9 hset j
; N  w, f. L+ s( j + 1)

6 Z# S2 z8 S* _  M+ o, T]2 \( Q/ q: k3 t; \5 Y' `
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 ))
  A' P) T* z8 u" B( j. Y( e8 e/ C# S' J/ b5 ]- f8 g

4 ^" A; M7 e% U' V0 F# Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. W8 U: N! X) }/ e;;
及时更新il的评价质量的评价
& {4 h. }7 ^, V: g/ ?set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; g+ g( Q3 f0 B* D3 sset l (l + 1)
4 s; M8 Z; P7 A. T% w/ x]
+ i- I1 ?6 n6 h  S& pend
8 S* X; u8 V1 U/ a6 f1 \1 ^: p/ Y1 K3 g2 p/ S; ~* y" u0 k% z
to update-credibility-list" H' e7 O9 e- d. D, e( ~
let i 00 q+ e- ]. z5 b6 Z
while[i < people]" ~) K+ }% y) Z
[( @# b$ j$ b" \: I
let j 0
4 m7 H$ Q# v' Q+ `0 c9 C/ B* A% B5 c: R9 Jlet note 0) p! B0 q$ J" T) n  ~4 a, _/ w6 m
let k 0" R: d: P9 Y. I/ K( F
;;
计作出过评价的邻居节点的数目: M1 A; {: T/ u: q
while[j < people]
# N, j% U; C- s" R+ [: H) E! B8 n[5 F" o. U7 K% s, N$ ?
if (item j( [credibility] of turtle (i + 1)) != -1)2 U/ S( \; B& [  @# Y9 P
;;
判断是否给本turtle的评价质量做出过评价的节点
4 m% }8 n/ k5 \! h; j  w[set note (note + item j ([credibility]of turtle (i + 1)))! v  j: @9 m" ~8 R
;;*(exp (-(people - 2)))/(people - 2))]
+ b1 Y1 a: K& S" n3 W  O
set k (k + 1)3 V! M) d2 l9 ~
]1 E2 h! G: R$ Q/ Y( V' e7 J0 X
set j (j + 1)3 G& r+ T1 G* D7 E/ B6 ~$ l
]9 ~9 P. |6 F+ T& w! Y. r/ E$ N
set note (note *(exp (- (1 / k)))/ k)1 C7 X& R% C1 M' F. Z, Y# V* s& ^. g
set credibility-list (replace-item i credibility-list note)
9 _$ e# p/ x# uset i (i + 1)
- f% |% T+ V' _8 g]
( a7 y6 L! L# q) D/ e, `0 L% b& Rend
( V& G! }/ N$ N# f% `/ H4 ?. Z: @2 `) [& V7 d# Z! N, s5 {+ Q
to update-global-reputation-list
2 R0 B" m4 e$ I5 R8 T2 r) I6 Hlet j 0% f  a  F. j( J; k
while[j < people]
( D& `, G8 H0 t! y- b3 Q[$ u) c; R# {+ |& `: R0 q0 h
let new 0
: Y; Y6 c9 ^& }8 N# Q% t, S3 h;;
暂存新的一个全局声誉4 \; U8 p, x7 @# k7 s
let i 0
! j/ a2 l3 @3 mlet sum-money 0
# |+ Z$ Q, d% I( i: C  r8 slet credibility-money 0
6 b2 i5 w: Q! h- c5 u" o) dwhile [i < people]
1 K, Z2 {7 F  e- X[% G, M5 A. C0 H7 m) `* F( z3 m) }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: c. W% u8 g) [' ~8 Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ B: H0 s5 G/ j
set i (i + 1)2 d* o2 j! _6 P
]' A7 w* Y% ^- J: q" R) r
let k 0
% P$ B2 j0 [, b5 ~5 jlet new1 0
( I1 b; ^9 [7 F8 i: ^. w2 |% r# twhile [k < people]
5 Y+ z! P5 Z9 v: F" `" O$ I[5 {, I/ O6 ]! {/ s# Q
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)+ }3 e+ }& V$ F6 O# L" B
set k (k + 1)2 u" J" d/ ?+ M6 B; [( ?
]
/ Q* ]3 B+ D# V/ sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 e. y( b! ~0 ]$ N! q8 a+ Yset global-reputation-list (replace-item j global-reputation-list new)! r( b+ B: ]6 }0 |0 @
set j (j + 1)  B/ }; n7 D  G
]1 m: I6 U0 E1 l# J  Q3 [2 l
end
8 y9 V* E% N8 I" h% K0 v. y7 P3 @& Q" c8 i
  A2 S' z( y9 U3 a

# A! Q+ k$ Z, R) }1 nto get-color% U' c: p, r, Y4 Q5 W( ?7 P, |$ C

" ?; V: y5 K# B# Gset color blue
3 [7 o5 _. e: O, N" T" e
end* K% I7 j# e! U! q1 m
. L9 n! |. f9 y" _
to poll-class
+ J' X3 ~  Q7 m# X6 Wend. q+ e) \: E; P! t- J
$ K7 p# S  k/ z1 B- s6 V. r
to setup-plot1* l7 h: E+ e: H8 R6 D
3 [& r; s. i1 X- C8 u# x2 \; a
set-current-plot "Trends-of-Local-reputation"
. K2 r+ a) y' v; @0 z

. i1 t9 F$ }; j9 P5 o+ l! P7 wset-plot-x-range 0 xmax

# B1 G( E" ]* L- S1 e8 b" A+ l
' @, C4 V! R8 j: s' Fset-plot-y-range 0.0 ymax

; Q7 B. q9 y  z3 ]% ]- qend
, M( L. V/ C8 g( @2 P: q- I: o1 z
" ~3 ^2 e" p! T8 h) Zto setup-plot2
8 s3 X9 N* k. x* ?, b( E8 d
( h* U4 Y  Q( nset-current-plot "Trends-of-global-reputation"
* Z8 j+ p, I/ |/ G* D
9 T3 M5 I% `. Z3 c5 o- _
set-plot-x-range 0 xmax

; [( d8 v- G+ t5 ]+ O! F$ [9 i7 ]- g# s0 j2 Z+ _/ n
set-plot-y-range 0.0 ymax

; l8 s2 H9 ~4 Y9 E2 zend8 U+ {8 W6 ~4 w7 L( M' K$ c! C
. E% i7 l! C/ Z
to setup-plot3
. c2 H+ {& h6 c! I2 X4 g) n" {( Y) @  ?5 c
set-current-plot "Trends-of-credibility"
; e2 V+ I: h/ d: e$ x
2 y0 ^' A5 o1 X
set-plot-x-range 0 xmax
9 @* `6 w  Z* g7 A4 H- @% u; ]4 v
9 W3 f4 A, X8 U) U3 e& j  M2 A) d. K
set-plot-y-range 0.0 ymax

1 y. ^5 w$ b  a" r+ _end1 s' h" Z  Q5 i- s0 k
( G6 r6 w! A4 M* z) |% {: F
to do-plots
6 J1 X* S% P+ l9 mset-current-plot "Trends-of-Local-reputation"
2 N$ z) y% e  f! A+ o# }4 Yset-current-plot-pen "Honest service"
  q! Z( V3 u& r& w' b- Eend0 z) e: T9 p5 i

0 I0 I, o. m# @) o( H' E! o[ 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.9 |! T) _  N$ s7 F. Z

, d1 Q5 F( y0 C* k. ?) m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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