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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:, b0 e6 {9 H3 e$ D8 |  E; R
to do-business 0 ^: a9 `! A( x" z3 C" w% H- r5 @
rt random 360
1 }% q+ L( H& Q5 u& q fd 1' D& T  W# o$ Y4 H8 x3 Q/ `0 u
ifelse(other turtles-here != nobody)[
: @. Z- W; @. H! x. g8 t$ 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.
- {9 K4 Y7 D; Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' ?: l8 k) y/ {( b4 H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 f& l. {; k" y3 @" `) m- L* G
   set [trade-record-one-len] of self length [trade-record-one] of self
; S( U% I7 B' @! `   set trade-record-current( list (timer) (random money-upper-limit))
/ U1 J! L- x& b7 P4 H; E8 ~* m8 k( f. f, ~- I( h+ {/ s% r
问题的提示如下:! W. r0 J. O+ q* `% b" @  v
* {, h" x6 k' t2 F! R. ]
error while turtle 50 running OF in procedure DO-BUSINESS
% }# n+ x5 e4 O* T6 M& h  called by procedure GO) g* Z1 X8 z& ~/ y$ I7 `$ n& B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 h6 X3 ~1 ]$ ^
(halted running of go)  {1 Y: o+ x: R7 [  X$ E3 O
8 J& N) N  C! N$ j3 g  g
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~~* b" j) L1 ^4 d9 w* X
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' F' K# _" Y, c, R) Z
globals[
. f) P, A8 t9 X  Y0 Exmax
4 K  E/ p- m5 V: n2 p& n7 \( O, Hymax8 b5 M- }0 ]2 r& @3 a0 X& \% T& P; h
global-reputation-list9 X& G+ Y, \8 x, e. w) D9 I
  i% Q& H  i4 M9 L& R
;;
每一个turtle的全局声誉都存在此LIST
& H! H& a7 f: O0 V3 U. ucredibility-list
5 d- ~, D7 Y" g. ?! ?;;
每一个turtle的评价可信度
1 t# T  I1 T4 S2 z6 Fhonest-service
8 v( I( R: C! E" A+ [  Nunhonest-service. n5 a/ ?0 j7 R1 H* V. _! S1 l
oscillation2 O& }) n6 f6 _; v. t
rand-dynamic
- x8 |6 e+ T- |]
) h6 i' T9 n7 ]" u, @. ^9 }
  \2 Z3 i, Z8 u! Q; E# j& ?! N5 Yturtles-own[
* V2 T8 ?% }$ q+ K" wtrade-record-all) U6 w% ]1 D' b% M
;;a list of lists,
trade-record-one组成
: K4 j; r6 R$ j% c" A' B6 ftrade-record-one7 X8 s: k( K1 |0 ~5 |1 l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& P* _% ^+ ~4 l' D* X; E" p% k0 e+ X( P
;;[
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]]  i% h' D5 z  G1 B8 W7 D
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]& m8 u2 v7 u1 d9 R& S6 l) U; j
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list0 y  i9 i9 T; V& z. ]( B' p$ L
neighbor-total8 H" O5 ^8 o- W+ f7 L
;;
记录该turtle的邻居节点的数目- K& b$ x  v& H9 D4 w% t
trade-time
4 w1 `7 c# T. W8 Z5 [+ K;;
当前发生交易的turtle的交易时间
5 ?5 f) Q) ~2 E5 V3 s7 Aappraise-give$ v/ D- H: C! h" H: j" s( d
;;
当前发生交易时给出的评价
; ^! @) m3 I4 d& E, W7 A7 S3 q- gappraise-receive$ ?7 x) a9 Q. i5 w1 Q+ \
;;
当前发生交易时收到的评价7 z& P9 v# L2 L9 s$ ~6 l* p8 X
appraise-time
% {8 F# ]( ~' W3 D( P* m4 Q;;
当前发生交易时的评价时间8 D' Y$ Z2 c2 w! Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- z7 u* I/ j: E$ @4 A
trade-times-total
9 B$ ^. v: ?6 N, ~* I7 t;;
与当前turtle的交易总次数; H: Q! o0 }  _8 n' q  t! r2 d
trade-money-total
6 _0 V6 x! r5 y* ]6 j;;
与当前turtle的交易总金额/ Z) O% ~% Z% `* }
local-reputation
3 a0 W/ }: u& ?% M, t$ @global-reputation! U4 Y0 F; H% r) E4 H
credibility
3 ^4 y' @/ p, }7 A( x9 j;;
评价可信度,每次交易后都需要更新2 N9 G; s1 D( P+ e+ X7 o1 Z: `1 C/ q
credibility-all
/ v0 d  H; f6 e& u2 W) Y" P# Z;;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5 {% Y. {5 P2 k& t4 G. Z

+ Z5 l+ v! R" J  m* a( b;;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0.59 {5 A* g' T' s& [% a4 T( I, X# [5 J9 u
credibility-one
& u2 |& {! f5 a2 T; N# T;;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people8 Y0 C* P3 x2 C& ~3 C
global-proportion" b5 E+ R! I8 i1 F0 C5 y; H# b
customer
$ G" @: K6 A% r: t0 _( Y& j+ Q$ kcustomer-no3 y7 T3 a$ K0 h; N! }! b& f, m
trust-ok
$ P: ?$ v0 W! d& Q! K7 Ttrade-record-one-len;;trade-record-one的长度& l6 i1 P& ~  E9 n( P
]
: n* S+ Y% s/ R! A' I* D9 M0 x: {3 r5 e# W) C8 H
;;setup procedure
1 ]3 h: R' i, ?1 R  H
7 ^8 S$ q. y0 B0 Hto setup
' `& n$ p" D+ ~5 D' X& h: }8 K& g9 I/ {5 ?, m% x; D! p
ca

3 y; D, N8 h; U" U4 s/ b# k$ j, {
8 [2 m; H3 s* h4 R' D# r4 ?9 B" Jinitialize-settings
: y/ o* i$ h: p( ~- i6 J7 f6 G  f
- P) h" Q1 ~, U* W. w
crt people [setup-turtles]

$ M! R6 w/ Q# k. W
7 _, _+ u! j' u% ereset-timer
0 U+ v* G. y  @" v
/ F# Q" z5 s& U9 t
poll-class
9 |7 \+ v: A9 t% W) b
& w: X3 s6 s, P: o- h3 p+ k
setup-plots

5 M2 \; w" S1 J
9 {& U: ?+ O- ~, ?1 U7 Edo-plots
) q- n5 R, C1 y' I+ {
end- l' D$ g$ h7 G. a, v9 M
2 C% a" P5 V  d8 F) _
to initialize-settings
; }% m1 M. x8 q% R) A
1 u- l7 N0 l; M* |8 `' }( O) sset global-reputation-list []

' ]" k6 F4 D# N5 b
' |: P' I% o4 L9 Sset credibility-list n-values people [0.5]

  N' o' D9 d1 [. q/ [/ O% Y  W  _; ]2 H; k" N' M0 n
set honest-service 0

% Q" c  R4 l$ L  _! U  ?: D' p; M. |# H7 k) f$ G0 m6 q
set unhonest-service 0
7 D4 Z0 ?, W( k# d' l0 i( Q

4 }" A# J6 i" V7 b6 lset oscillation 0

  J& T7 [; b, V  }5 b
* K) g, ^% c, F8 _0 Y1 ]set rand-dynamic 0

8 w- l, F8 g3 A; [1 I" q- g) Nend
( R) _" \3 ?2 t
7 T/ f. l$ l( b. H. C- o3 w6 V8 t# m) eto setup-turtles
5 M* k: z* f6 R- D' E* {9 w4 Kset shape "person"- Z- G* D7 A( ?# s1 w1 V. f$ u8 M
setxy random-xcor random-ycor6 b! S- {  x, x8 Y, S/ a# G
set trade-record-one []
, K: g3 w; V% }$ ?$ V. q* [0 h" _2 w" v

9 F! Z. ^# R' @1 B# H4 eset trade-record-all n-values people [(list (? + 1) 0 0)]
2 S: G# \' j4 B' D

7 Q" s9 V7 G+ Tset trade-record-current []) e5 P1 C  h# F: x* l+ t* _
set credibility-receive []2 h: k6 D# e9 R6 B& s1 c
set local-reputation 0.5" ?8 W/ [  ~; p5 [
set neighbor-total 0$ q, Y/ ~+ T* O! @/ }; t) J
set trade-times-total 0
1 o# L0 |/ N/ _: @$ n! N9 T+ Oset trade-money-total 0. y0 s' Z& d( t- f- U% }- U
set customer nobody
/ c3 h; @+ T6 g7 _set credibility-all n-values people [creat-credibility]- Q$ W( o9 _  V9 A5 N4 i
set credibility n-values people [-1]
" z9 S' e( V. ~5 L/ F8 V, S% Oget-color" J5 |- }/ b! D3 \' L0 m

# ^! w+ b; t- S+ \: N& Cend4 X3 \2 e1 t8 _4 I/ `
$ h+ d/ i8 m4 D# J" r( e4 o  x  J
to-report creat-credibility
; [, I" J' Q' k& lreport n-values people [0.5]
9 b1 K5 Z/ @# c, V6 s* Zend: u6 k* N! D6 D3 o
4 p1 z9 Y6 n( ~& [, @9 }; n; p
to setup-plots4 W, y' y  _7 l) k  @; r% V3 H
8 R% _6 Y: U1 n% d2 o: f5 D
set xmax 30

  b4 O. K7 g! h$ j" L6 D' r0 ]) u$ s4 b% X' b# b
set ymax 1.0

( _0 @/ Y, \; M5 F5 L/ _7 T
; i+ V! `/ A, Q( E) H/ d5 _clear-all-plots

" b& _! T/ m; s+ @* V, @- Q, [. h; f" \8 `- R
setup-plot1

7 u. U' F$ H& h# \& @5 Y: _9 F. a" V6 q4 J' g. t
setup-plot2
9 U/ e3 G4 F) `' {4 U
3 d! D$ A7 e' L
setup-plot3

2 e3 g, u4 }: @. v1 K0 gend4 x. b' l# w% u: A

2 u$ ^+ w2 O* \: G5 n3 n;;run time procedures5 i# Q$ ~) q" w* U

" r* j6 @' _& \! |to go
" w) t8 }. w3 E, }# T; C4 p9 G  [8 B1 {  [- ~$ V- u
ask turtles [do-business]

3 `% q3 c1 V( L2 c4 J) _0 uend
: F/ Q* o1 \$ n! a0 j: ~5 M0 `5 t7 ]1 R- j: `( }
to do-business $ d# N: l* G, H9 D2 e7 p
* T% I5 s& L. r. X, A1 s5 |
8 G; p$ I/ h: J5 _/ b( U
rt random 360
6 l/ J- G+ s! ]* F' `
* f$ t% K! Q: N+ N0 N
fd 1

* U5 G  F6 f4 G* }
1 P' J$ P8 x7 j. j  vifelse(other turtles-here != nobody)[
& r8 i" _9 n1 ~
% K. ^# b7 A' C
set customer one-of other turtles-here

+ s8 b( A  q- ^& y/ f+ t+ _: l1 [& a$ r  ?
;; set [customer] of customer myself

& ~$ ]4 W0 s+ U# u# ^8 A
+ m8 r  b: k! \set [trade-record-one] of self item (([who] of customer) - 1)% X* e* X% _" a: e
[trade-record-all]of self/ Q: j+ V! Q% J0 O( D! J1 g- s4 N
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. [- O9 E) w0 @4 ?/ C
8 p8 o, l! n4 w: i7 @! z
set [trade-record-one] of customer item (([who] of self) - 1)
* H( ]) b* H& E! [+ q! b[trade-record-all]of customer
. m& H$ ]( N3 b- n: s: }
; h7 y5 f/ O7 m! V
set [trade-record-one-len] of self length [trade-record-one] of self
4 Z# D9 u: {1 x! P( k  c
  `1 v6 Y! L; b, X7 L0 u. E
set trade-record-current( list (timer) (random money-upper-limit))

0 }7 A7 l0 c( u( ]% @9 T; S! v2 ~
) S, y2 \* l1 G4 q0 Y- _' }7 t( H* Aask self [do-trust], ^( R! ]/ L9 ?' W
;;
先求ij的信任度
6 q- R) [- ?3 h: q9 T* O
1 q: }6 B! W: f8 Oif ([trust-ok] of self)
7 q/ b% T5 j0 A$ s. b; j* c;;
根据ij的信任度来决定是否与j进行交易[. `% Z7 K/ u  v
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 k8 X4 }0 x  G3 B2 k6 y' s

8 m% Z( E' O1 ]  L  t[
, J: q# `# l! q$ H
& g) X1 _8 f% I
do-trade
( @+ I- l: S+ K9 G% [0 z- B8 |- w
: Z; d9 O$ S6 y0 I: c
update-credibility-ijl

, g! h" Y8 y1 v2 \0 u$ `/ C8 E7 D
update-credibility-list
% s; T6 P- |3 e
5 t+ _* s5 C, ?7 M+ P( R% s
2 h; V# S6 |+ ~- a' p% B
update-global-reputation-list
. C) [; h( y( u( q, N, j* y+ D
! J* t: O; v: e% D, c4 G) J- e3 z
poll-class
; ]0 g/ N8 a  N' a. e

4 Z) Y) A+ C" ^/ _6 Tget-color
8 ]5 s0 q3 E  a) O/ G) w. [0 R( S5 l

# W* }$ S0 a. P& V4 j9 T& U. E]]
% X  v5 G( }, v, c1 K2 P) f
0 c$ b1 s! {9 d0 m, m  T2 `5 l# t;;
如果所得的信任度满足条件,则进行交易. N, D  e  D6 ]7 P: e' m3 h1 ~

/ }9 P6 t/ O( Q! m0 G* w! J[
! J8 V* u/ z+ `8 [) _0 D3 i2 s. c, y

  s0 U: J2 a" W1 l7 E% ^0 Qrt random 360

% v% u' e- I) b) |4 H% P% Z( _& }  @' p6 ~# N
fd 1

# ^. H9 @4 q3 F# A& Z" |) B' j
/ O/ [" e$ j! k0 J4 i3 O: g]
* c' D: _) K, o! I
" P! ^8 _7 F" g: S5 \5 C) J
end
3 d+ W0 b5 U6 _% z% P. c
: P- ^+ }  p9 T* W; q
to do-trust 1 ~& E6 h% y' @. q' L
set trust-ok False( C) c+ h* \! M2 [# I
5 A5 s$ Q6 h: Z; P2 k+ H
1 x5 x' b5 H& V2 d" L3 R/ w0 @# Z3 Z
let max-trade-times 0- r: f0 `4 i+ F+ Q& A, ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  W$ c2 r! M1 p! v4 B/ [4 @! ~) Vlet max-trade-money 0
/ D* R+ H3 G; ]) [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 E$ S. S, q! J* x  p. _  Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' i& Z: X5 [# s+ o7 v

- m( I' n# N& Y( L9 }( u2 w( ], b9 d
6 f: G1 @9 i! e. K" ]: C+ {
get-global-proportion
5 P  h( W) I6 j) e+ W/ a) X8 clet trust-value
: x# M6 Y2 {. H! ?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)
; H# L( @1 h' M8 X
if(trust-value > trade-trust-value)8 r9 W. `' k) n
[set trust-ok true]
# g) S7 ]& z8 [& Zend! v" r1 k3 ~. L! T$ X" X/ J
& l; F, ?$ Q4 A- X8 E2 u: @- ]
to get-global-proportion" b; B4 _9 C! i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, B# D# |) F9 \/ J7 _, s[set global-proportion 0]8 @5 r; h) V% c  t( g; G
[let i 0
0 k! W9 J' h) l' g0 y4 tlet sum-money 08 W! k. e- B) b
while[ i < people]' L& K: A3 d& h1 S# ^( }- k* ~
[
, ?' ^! I0 R. x6 r0 W* v, |if( length (item i+ S* V0 L8 n# @1 }0 S- @
[trade-record-all] of customer) > 3 )

# s# u: ]" `( ]9 |: E! C* }[% ?3 A) U$ \3 ^0 F' f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) _' I3 P1 {7 L' j
]$ X: C9 A) k4 \! h/ C8 G) Q
]* R+ l0 Y" q2 k8 [6 P
let j 03 G6 f/ u" X- r3 ?7 P3 A) ?
let note 0
7 H( T! w2 U3 C5 h+ Rwhile[ j < people]2 @  Q: ?& W; K; b! A" h/ d
[' _0 T- z! V, R( `. Q2 x( U/ y
if( length (item i
$ f& @+ f; Q7 a8 U, U[trade-record-all] of customer) > 3 )

1 d9 S0 \' I* y$ U[
9 Y# P& a7 q  m" G8 X5 vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  u; }) D8 M" @1 {# [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' Y3 f' P% A$ }3 L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 C- s9 U' f# ?4 Q( H; \' y
]# i- @5 I' C7 z# _* Y5 z+ p
]9 I9 ^# K# \$ _! f0 N" m3 v7 k9 b
set global-proportion note
+ Y1 T/ Q+ Q/ T, d0 f0 C]
( _  |7 f5 y! tend
8 `' j  V9 U' p, ]! R. c, T# R. r! f! U
to do-trade/ v3 y: z0 N( E  I, z  s) B% m" R
;;
这个过程实际上是给双方作出评价的过程# V4 [9 T1 G* X  o* R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" _' R" p8 o: n3 k2 G9 W  z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& U) b8 C' G; q5 s5 pset trade-record-current lput(timer) trade-record-current
$ U9 @9 P; K5 J3 };;
评价时间
# i% Q8 v% j5 Q. fask myself [- U1 q+ L: o* n2 F
update-local-reputation
+ c" a" o  L( l: J2 L- ]: K" s4 q0 U( ?set trade-record-current lput([local-reputation] of myself) trade-record-current& B3 e. F1 F* w7 v
]
+ ^0 R) X  o) Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' k- W7 J" W6 V# n;;
将此次交易的记录加入到trade-record-one
! ]8 |! A% D2 c, b  A9 r3 _% Q3 ~set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 m/ G2 F$ e' l+ n3 h( b. }
let note (item 2 trade-record-current )' b! @! j  }: k; \$ t
set trade-record-current
" B; Z2 T* e& j4 y  b$ Y5 K(replace-item 2 trade-record-current (item 3 trade-record-current))
4 C: b; Y+ P6 {" p3 g6 }3 N
set trade-record-current4 N9 t( j, {( c* f; T) {- c* z$ W
(replace-item 3 trade-record-current note)8 j/ O, i1 k! S& e5 Z4 k+ p

' l! a* b( P2 F8 t& N) _

  s8 y& J4 R. ]+ Q8 \3 B# [" wask customer [! K/ A) x$ @( m* h& p# H& C  |
update-local-reputation) @& _0 w0 H: k' _& D/ i
set trade-record-current5 O! ]& J& D& W2 q) H
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 {( H: Z2 a- |; e' |5 X7 [% s]
# N: f; r% Y; R8 X# T# k9 E8 o4 n
) }) F) J4 j2 m' f% F9 n* Q& W

& G6 m, p4 q. J; q6 _) Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; M6 ^+ w# Q/ n% o1 j
0 m: M) e1 g) ^6 p# I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 J$ O; v) e2 B. W( h- L
;;
将此次交易的记录加入到customertrade-record-all
( T7 A& t: g" H  send
7 E3 T  }1 R2 C* k* D
$ B3 k; I7 x) f. a: G) t& ?to update-local-reputation
6 [; @) }) _' B5 O4 R2 ?set [trade-record-one-len] of myself length [trade-record-one] of myself
# T' I: G! y( s2 s! j7 B
; w- X1 I. o7 }* x  z
# d/ r2 d, p: R! s3 k;;if [trade-record-one-len] of myself > 3
5 T9 j7 t; _) v
update-neighbor-total% _; t, b) V7 |( J  ]3 @
;;
更新邻居节点的数目,在此进行
" P& ^# Z0 U$ A" mlet i 3" D4 L/ H, Z8 o  P, E
let sum-time 0. ~9 G0 M: a; v! {) r+ e  V7 a  n  |
while[i < [trade-record-one-len] of myself]
" I, z/ c6 w5 A! |[" Q3 k  C: H. i$ W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 I: T0 e* @' G6 e# p  H
set i' w# y/ F$ y) o6 e1 R! ?; ]  y, c
( i + 1)

+ e- j/ }1 L) k7 j: x; c]
) H! g5 ]& P1 `9 l$ xlet j 3
5 m0 K2 k' C; Zlet sum-money 01 j* b8 l6 F% Y# ]& D! P
while[j < [trade-record-one-len] of myself]
) k' h( k  k+ J8 X0 C8 h! _[- N) ~1 j+ ~* d3 p' d7 @& Z
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)# c3 \$ s! Q" c6 q
set j& W# v% m( \& E! t/ y
( j + 1)

$ [; k  K7 y, }* o]5 @+ O& D! }" d$ P" d
let k 3
+ k" m- R  l' W9 L4 a/ olet power 0
/ r$ Z( l/ c* T1 |3 G3 W% klet local 06 ~$ C1 N. v8 [* L9 O
while [k <[trade-record-one-len] of myself]
6 T% e" D6 n" H4 O; x! X[
! R5 W, ^3 T, I& D( 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 H; r0 N* k' g- g
set k (k + 1)$ ]' i5 x! m5 V
]
3 [: b2 ~8 {+ G7 y# C# Eset [local-reputation] of myself (local), R, p. p! ~. L4 |8 z
end
/ c  X8 p& c: |0 R0 s* T# _" ?8 m
5 x/ U0 b) v: w" Z5 zto update-neighbor-total
- y; F1 {' P% `5 F  d/ W; i2 t5 i) ~6 k1 R: `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* l1 i) B! d( G* E$ ^

* x+ b1 U8 y, C1 `

3 V' y7 P. {2 K7 _) c  z6 d1 g' u' uend8 G6 H) O8 H% M8 q3 j5 @2 {

* ]. {5 i6 \# ~, n- lto update-credibility-ijl
: d, V* l/ T9 B* p& e
9 b) h0 N# g: g6 s( r3 L# w8 R;;
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。- r% x2 a( @& a- R; Q9 L' k& s
let l 0
5 T; g0 V4 Q* V7 C# w  o3 c* A9 [4 rwhile[ l < people ]
3 {" y- n6 C) U9 Z6 ~" w0 e" n;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
8 s% J5 _. C; H- d7 E6 ^+ C[
4 d" y& Y* b8 c5 T# elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 @5 x0 K, }' Q8 |$ M8 u1 c
if (trade-record-one-j-l-len > 3)" g% h) t) B. M6 P1 j
[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" H  v" h! u( d+ p6 J) @  X6 Z
let i 3: l8 S$ M# A( {% A# b, b
let sum-time 0
& y  V5 o8 p- C6 jwhile[i < trade-record-one-len]
$ k5 N* {; w( o; Q1 N( I5 Y# L[
7 d( K6 k8 b' r; O# Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' Z9 |; o) A% f6 F* Q. @8 b
set i* N' I  ]# F' ~( M( E- J  `
( i + 1)

& v0 v& D; {' l" s. y- X5 {]! E' z2 t- G2 o0 X( Z
let credibility-i-j-l 0. U0 P$ [2 V4 S1 {2 U" n" U1 G* f
;;i
评价(jjl的评价)4 J- C5 ?: O5 f# ^* Z6 @
let j 35 ^' v4 _0 e, ~0 U
let k 44 `$ w9 I, ~( m" v
while[j < trade-record-one-len]1 h- }0 J; h' e" z, O
[
: E+ F" I! V: w5 v" uwhile [((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" H" i! W7 q/ H2 K5 U% a/ i( O. F
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)0 z4 `. \$ {. D% w1 [% f, _
set j3 u2 p( C8 e6 s6 e* y9 U+ v! P: ?: _
( j + 1)

/ _0 f- j- x$ X) h' D3 T) p4 W$ m]
2 l  f, l) N! fset [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 ))8 K. C) I# A" [! [

+ z: g' _5 \. @$ k3 g$ K
* B3 O+ G, _: o. f# G8 Z4 o  C
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& F; M, j3 W# a: E! C% E+ ?;;
及时更新il的评价质量的评价% M5 I' Z  L3 O& }% u1 J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' o3 ~: O" K8 m( t  O, xset l (l + 1)- O: ^3 ?) K4 A( b& k" p1 `
]
+ o2 W" r) p$ ^6 A9 D2 F7 n" tend) H: v  i6 @; X5 X
; ?; \; O/ n. D- Y6 V
to update-credibility-list
$ A. \' {& V* u# olet i 05 `$ Q' a( d2 z$ E6 L
while[i < people]: n2 g" S1 Q/ l' [: h; J
[
4 R3 ^5 ^/ c$ L$ clet j 07 j- s4 R7 U, J, y0 s# }
let note 0
% H, c! ?2 {! A/ u/ Xlet k 0
8 f7 F7 t, y$ F;;
计作出过评价的邻居节点的数目. U( H% u$ ~# T1 N+ \& }! k
while[j < people]
% Z+ C! Z# x9 a' w& P[  e" W  L" e- [; `! \3 w% M
if (item j( [credibility] of turtle (i + 1)) != -1)
5 `7 S, g7 p# `; V, D;;
判断是否给本turtle的评价质量做出过评价的节点
7 r  F2 E* N1 Q& ~! K7 X  e  M[set note (note + item j ([credibility]of turtle (i + 1)))/ M$ d4 S- Z0 Y, D/ x* [7 j; V
;;*(exp (-(people - 2)))/(people - 2))]

$ J# p5 l3 W8 i$ B7 T& Iset k (k + 1)( O# }+ M& Q3 w! H2 L- N. i
]
0 b" G& c& o2 x5 u" w& eset j (j + 1). N; g# N/ s( g, n
]
- O+ M* D' A8 m6 Gset note (note *(exp (- (1 / k)))/ k)2 o# b: f  T7 Z
set credibility-list (replace-item i credibility-list note)
" ]* j5 P. ~) Uset i (i + 1)( A% m: K5 m' ]( f
]; ?2 D' K2 x3 ~2 C
end
* ^1 r5 n( t! `; g0 C' ~% \" H2 w) y  Z# O2 ^
to update-global-reputation-list
0 e) o+ \2 _) ~: G  M6 c) E. zlet j 08 |2 ]% i& e" {9 o7 D8 X# Y* d
while[j < people]
) _- A! q% n7 \9 S; l[
9 D2 k' N3 r8 z1 ~6 G: B% Ilet new 08 z- v! W7 {+ d3 s* a$ n
;;
暂存新的一个全局声誉
1 |% I9 ?: q- T5 g- tlet i 0; a) _( o5 f* n8 ~( N0 q
let sum-money 0
0 @/ d2 X0 U! [$ Wlet credibility-money 0$ }' a2 m/ u2 l8 @8 a
while [i < people]8 F* |. U! a1 G- |* ^
[
3 \7 ]8 B' L; J& _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" I6 S( I+ z6 N8 o) I- Q0 C7 kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 V; b4 Y2 h! J$ e' h- B
set i (i + 1)
$ s: H9 W8 m  A/ r0 E* P- a' \: i+ \]: O3 ~+ m4 g9 T- \/ ^8 E- j9 k
let k 0
0 o: P  G% i' w9 r+ `2 l  C) `( J* ?let new1 0
, r. B5 E, E6 ?! `/ X6 j- \while [k < people]
. F5 w6 Q! U& _6 X7 t[0 |( M  }# c8 J  d
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 r$ {1 `, c0 m# k2 q, ]set k (k + 1)
& ~  A6 \+ z: A7 i5 _& j, k  H]
/ }% m+ u, b; t% }, Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 Z3 I& Z5 S/ g. o# r
set global-reputation-list (replace-item j global-reputation-list new)
' `! L$ U3 A/ G. s9 Kset j (j + 1)# i2 e% V" [( }
]0 E7 h/ \; ~- o* G
end4 R0 G% P  [2 f
1 w& d- R4 L$ ?4 D0 A/ i

* a. T/ @+ @. a+ X: u3 x2 Q; [+ T4 d1 Y  s; [& ^& |& ^
to get-color3 j$ Q$ L. K6 J! T

  L  L$ ?0 r: y, r  o. m$ a, _set color blue
% Y! d3 N; {- D# a" B
end
0 R- j' X  {2 _2 _- M. R
4 W7 r: C/ T8 u8 tto poll-class' J  A5 G; I7 c3 O
end1 r. i1 }" H% s4 I0 [

! G6 E( A7 C; `0 D! ~to setup-plot1+ ~6 f4 l5 `) G# a# u5 M5 U

2 l  g! y1 s9 v5 z+ S' Tset-current-plot "Trends-of-Local-reputation"
  [5 Y/ G7 r. f6 y5 r

/ ^8 f6 m, C5 A1 j5 Mset-plot-x-range 0 xmax

8 I* R8 T# b/ b$ I7 k- O; ]0 `: f+ b4 q! ^8 b5 _' X' @# G
set-plot-y-range 0.0 ymax
9 j; [  P1 j6 p, T; S- ?1 i' j
end
& V+ t; x$ A. p' g$ A
& n6 J6 q3 v0 _: J6 [; h+ ^4 kto setup-plot2
( B% g3 d, s  ]3 o) _; G- h' g, M1 p
set-current-plot "Trends-of-global-reputation"

7 D* g; S" ?/ w; o) [- N7 |
8 G, h" v, p7 gset-plot-x-range 0 xmax

! [& x. O- J4 U0 @8 `( A4 @! f5 O, K/ p
set-plot-y-range 0.0 ymax

2 a# ?7 g- N' _* c+ pend# v' [* z) B& `8 k) h

6 E) y- ^( \( n& [8 ito setup-plot3( z* l& {& U8 j; c
5 Q+ F1 V3 j! j% M3 n0 V
set-current-plot "Trends-of-credibility"

9 N  B. Q3 r  Y* h) u5 x  g$ D( E7 ?6 L, G& L
set-plot-x-range 0 xmax
) V" y6 K3 s# y2 y0 R
7 c4 c1 H' ^# I5 l9 ?
set-plot-y-range 0.0 ymax

  s' u5 V; g: S& C4 ?: Vend
- z' C0 `0 n/ `, Y! s2 L- W4 Y) z' d( m
to do-plots9 K, X/ a/ S% o& q: w/ V. G
set-current-plot "Trends-of-Local-reputation"
. i& i+ x/ ~1 g  W. z0 Bset-current-plot-pen "Honest service"
# Z8 U$ `9 T" `# H" E5 \+ yend  S$ v2 F8 X* |9 L" Z: |& C/ K
- i9 e4 a! v# n, k( `7 k
[ 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 ~: H) A4 S( F6 T2 K& t1 E9 n
# }! [3 o9 s2 K# z  ~, E4 R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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