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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:
: {4 h* l) _) F/ V/ i, j6 k( z& {. wto do-business
7 [' n( ~1 w% K9 v! ~1 D rt random 3601 D% K" A% i5 d! G5 l2 b& P& p
fd 12 Z! O% x2 C  g/ T. _
ifelse(other turtles-here != nobody)[
2 W9 d, l6 A7 {+ |   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.
+ y1 s; Q! {& Z$ P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 d7 x1 E$ @( s2 t1 S1 t  f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) W8 s1 |' a( |$ _, e* ^0 Q+ K   set [trade-record-one-len] of self length [trade-record-one] of self* z5 q0 p( E4 R. z
   set trade-record-current( list (timer) (random money-upper-limit)), \4 M  E4 r. q0 J) N

  a4 J9 l" _  T( }! W7 F" z5 p问题的提示如下:
0 v0 n. W: W6 p9 C. W2 V/ F  T( D& J/ Q% l7 V0 [: C# V
error while turtle 50 running OF in procedure DO-BUSINESS
, b8 ^  I8 {  O$ L  called by procedure GO, ^1 D" e; I" g2 Q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 z' b$ m7 U: D" H# B# d
(halted running of go)4 {+ r4 c3 n7 G% B& O

0 {1 _# f6 z% }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 u' f: P% _( {+ Z
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7 n: B( y5 {* q. M3 Z
globals[
  t& l- J8 f+ K* o) Nxmax
4 e( z7 P; k8 h9 x8 Z3 Q3 K1 Yymax
1 d: J. y" {: g9 p) A6 ?5 ^global-reputation-list
0 F& e1 N$ Y2 t0 F/ A4 F! L, H, M. D2 M7 `& X$ {" U
;;
每一个turtle的全局声誉都存在此LIST
* N- k" O; Z6 A5 c4 |2 s0 \credibility-list
5 e5 _: N- n& ]4 A1 ^' u;;
每一个turtle的评价可信度
: K7 R0 V4 O- G8 W9 phonest-service
2 k3 r4 W3 s5 U3 @unhonest-service% \; G) X1 A3 x6 p
oscillation2 O/ [/ u6 j- B" ~$ |, e- F
rand-dynamic0 V( w. _" U* w
]9 i1 h9 D/ |3 |# q* y! b

" {% a9 B( y% O) Eturtles-own[; @+ q# k5 K4 v/ k- L
trade-record-all' F$ m, j# ?& j0 N" k! n" n' N6 s
;;a list of lists,
trade-record-one组成
$ M8 c" c* x" _- q  _' M1 Ptrade-record-one
3 l3 Z; w1 R# i" ~# h;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! @/ H7 z2 k+ J# K) F2 r9 x$ c

, L! l* c; F9 |;;[
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]]
! d, u" G% e- d6 e9 Itrade-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 c( g- p$ P* U( s# c, Z
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
0 z+ Z; x+ ?. S: k% A- Kneighbor-total$ D) d' C5 s% S! S
;;
记录该turtle的邻居节点的数目
' J7 }8 f- W5 m0 s9 E2 A& xtrade-time
7 K! ^$ I' P4 d$ T;;
当前发生交易的turtle的交易时间: m! I5 i+ D: u/ E3 k+ f$ [: C
appraise-give
$ _4 N$ B* N  W& b4 Y;;
当前发生交易时给出的评价7 r- ?$ `1 L: T* p
appraise-receive
% C9 G# K/ z/ D  I5 };;
当前发生交易时收到的评价, b! w  }2 e8 d# w4 h6 ~, Q
appraise-time4 v8 T7 w$ C' w( O
;;
当前发生交易时的评价时间
5 t4 E; a0 l9 i1 nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 h3 j: S5 x3 Q" Y5 s9 m8 W
trade-times-total) M* q7 C) E" ^# E7 n' a( j& B
;;
与当前turtle的交易总次数: z- [$ y9 s) ]# n) m4 _
trade-money-total- F* r9 c* D( }5 g
;;
与当前turtle的交易总金额$ r& [' c! C; \1 |7 A
local-reputation
* G+ Z6 Q# O+ g8 H5 |/ hglobal-reputation
# L" H/ U6 Y, L8 @4 zcredibility: ~% U. ~9 f2 R& u' j7 p! C. a
;;
评价可信度,每次交易后都需要更新
* }0 M- Q. O$ Z: ncredibility-all
4 j, g. l0 r3 n' o7 g4 e;;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
+ P4 Y0 X8 W2 G# Y+ u
& V: i( j: k! T1 D;;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
% C  ^- K( L9 p) m4 h9 w+ tcredibility-one
9 n% }$ R  r$ r;;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people2 N( z) E/ |) g6 v; e! {: j
global-proportion
6 E; f2 B+ c; Icustomer3 b" y% z& D7 [7 \* [
customer-no
1 E, c1 E: j8 ntrust-ok2 J3 W, M0 b  k: {) m( z
trade-record-one-len;;trade-record-one的长度& Y1 l1 [0 b; g- F% q9 M" j
]) V+ g1 E5 D- t

$ e: ~2 e" f' o5 g' d) h;;setup procedure
" w) Z/ E' d! q1 ^7 V5 v, W
: `+ p- W" q% ^8 ^+ C' A, i/ yto setup* M+ t1 k7 R7 F9 s
4 x9 ], u/ K5 }( H& m+ T2 z) ~* ^
ca

5 ^  h: R, G! h0 C" s9 E
% F- J3 U$ D4 z: y! C- }; t" pinitialize-settings

- l8 M( h) p" d0 q) i7 r
! H2 ]. S! j6 U% z, F& S) v* _$ jcrt people [setup-turtles]

7 W" E* ^6 `* X5 v2 x+ ]2 V! m' c# ^/ g) i$ d: C  j0 H
reset-timer

$ B$ e4 v3 |& Q  A0 n* \( J2 U6 d; l
poll-class
( b6 g: J0 y" t9 s

# e+ P4 d; I# r6 I- nsetup-plots

: X% @, v0 `6 S' r, j
: W1 p3 V( R* u4 W8 Z6 F5 T0 Gdo-plots

6 e' u" t$ d/ m$ N3 f  Yend9 S  B4 I7 F+ G& F8 m
9 v0 `! h- G. \  P6 |$ ?4 Y
to initialize-settings
( i9 M( h9 R9 r( r' P! q
2 [5 S* m' X1 i) v* i; l' n+ Cset global-reputation-list []
/ Z( P+ L8 [% K8 A5 ~; U
5 E- v4 T, k6 P9 J
set credibility-list n-values people [0.5]
. X* V9 D# N7 t  L( O' x4 X; t

/ A( w1 f4 K' \) }) ~! k  kset honest-service 0

% I+ R! G0 G! b. j- s& y8 H; [9 p  i" f" E5 s- J& t$ B
set unhonest-service 0

" h1 V( f) @3 s9 t. J( b' V+ q# i: I/ O( v
set oscillation 0
6 ?/ d% o+ w' @
9 |) Q; G9 t0 ]
set rand-dynamic 0

0 q* a, j& v* y. Y' X' S3 Iend: h  w6 W# P& f5 z4 F2 e" K+ h# W

' b$ `: x7 h+ K& ^to setup-turtles
/ X/ {2 {! _- hset shape "person"" }* m- Q; ^; e& K0 |* _
setxy random-xcor random-ycor
0 w' B: W2 K/ p! _% O+ V: Eset trade-record-one []/ w; m: E7 R. b: W7 l- c

- ^0 t+ |' s' X! D9 {set trade-record-all n-values people [(list (? + 1) 0 0)]
5 q8 B$ v0 S) Y* |5 `# B
9 n9 }9 Y/ D5 Y. F& k, h
set trade-record-current []$ [$ D9 m2 e' T& p# }
set credibility-receive []6 u, q4 x% {4 y* l, [
set local-reputation 0.5; r. v, D% {' X  X8 _* q
set neighbor-total 0
% z" T$ z$ G, {2 [* p0 j0 eset trade-times-total 0
) X( E: M2 \9 p  ^set trade-money-total 01 k8 u' G. A  `' D4 P  s9 z9 H
set customer nobody
$ G" {' G2 U+ P! o: Jset credibility-all n-values people [creat-credibility]7 S) H" X) }9 S
set credibility n-values people [-1]! G  A) D8 n3 y$ L1 A2 \/ M, u
get-color' J6 l7 Y& ^% L1 u+ u0 d8 R0 B8 Z

3 q& m" p8 {" b1 W. J; J5 g! Dend
% W+ T+ D! r9 ?. i1 C1 ~1 b3 Y' S+ Z6 w5 U# j
to-report creat-credibility
) r, J& G% G; T$ _% [% e! wreport n-values people [0.5]! C: y! J. }% b2 }% Q9 v
end+ {( q+ o' l, ~# b: A5 I
4 `2 Y+ u& t. B" }( M- T! t- w
to setup-plots4 w+ P6 W$ L; e8 }8 p( L; h1 k
" U: ^( X6 L6 ]% m
set xmax 30
0 O+ I, U- j9 {1 ]4 x! C( V
) a+ ?' v+ T+ r
set ymax 1.0

2 T( ?$ H0 n8 _% f& h+ C1 i, n1 k6 l- H# `+ O
clear-all-plots

# |  W- x. Y9 @: _; P% [7 X' ?$ _( N9 F, o( Y
setup-plot1

" P: S( @) B/ Y8 I& f6 p# n, z0 E" w9 e& I
setup-plot2
' j8 [- K! m/ a

1 K3 B7 s5 M" M& wsetup-plot3

9 o7 q7 |) x% W" T/ @end
  s" q+ E! r# S0 h% g2 H0 K/ r" b8 n1 C0 Q; D5 {
;;run time procedures+ U) c+ {0 N: B; j
$ x" K" N# J0 D( p( P$ u4 y
to go4 [; [) N' [: E+ Z" D

/ A; E4 |) L+ N; v! g9 sask turtles [do-business]
* [+ _8 u& N& I- n
end) P4 J( ]: M$ h
+ b* F" x# ~6 [) i2 \" t$ @  T6 c
to do-business * [6 Y- t! _1 c3 [* |7 {/ X- u
0 i" y8 _8 Q! {: Y
6 {7 f' w! a! K" o1 s3 @
rt random 360

: |9 N) d; g% u, e
" v- I* o0 V$ b0 f, Q* I) Xfd 1
2 \4 k3 B8 T" ~% j' ^; k+ ?
5 W4 F1 ?# j! L5 _0 Z. p4 e! R) r
ifelse(other turtles-here != nobody)[

  b; {- x: P4 s: j
2 n3 z% M2 `9 _9 K6 Fset customer one-of other turtles-here
+ B0 S5 e2 q0 I: R3 D% B/ t7 g

, Z2 E% d6 P/ i8 S& a. _$ S, k;; set [customer] of customer myself
: C: \+ U  T% ~( C8 _) V* p9 v

6 H6 |; {- Q5 a5 R1 s  _) Gset [trade-record-one] of self item (([who] of customer) - 1)
' Z6 k; M5 r2 F" w. M[trade-record-all]of self- G9 ^' m6 i8 ?7 B! F. a) H5 w
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: |0 P7 ]) v, k+ h
$ t) _* M* W6 h9 x. J9 cset [trade-record-one] of customer item (([who] of self) - 1)
; M8 l5 T) z  p% |! T[trade-record-all]of customer
/ B. Y: V6 Q3 I  q4 m3 W$ A2 I

; t7 e2 @2 r2 t& s# cset [trade-record-one-len] of self length [trade-record-one] of self

9 T, H( X0 c1 l8 n7 Z, u
! b  z) w7 }5 J1 zset trade-record-current( list (timer) (random money-upper-limit))

- N! }- p' H5 {2 ~4 T& @6 y; `" t/ A9 L, B2 h8 l; v
ask self [do-trust]
' O3 k" Z" F( H; E% w/ |;;
先求ij的信任度
0 u5 [7 y' R* I0 g+ _0 g' ^5 q$ j0 {3 w) Y6 `
if ([trust-ok] of self)
- I& c" g1 U! [" w& h;;
根据ij的信任度来决定是否与j进行交易[
' A. L- d" b4 L8 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" e8 b6 ?# M5 O$ A1 D7 \

) U3 [2 D# `- X' |[
, b7 U; E. J! k' U
' n2 {) X  a" }
do-trade

* X9 j+ K/ f0 R: j, |* p  h$ `% f- V7 ]
update-credibility-ijl

# \3 d& i& I) l2 Y# f# `1 }0 k% p) l. x3 w
update-credibility-list+ m" r! G" J. ^# T% t( r1 b& ~
4 k& c  I$ }) |. {$ Q; [$ P

# e0 n6 e- u% b! C9 t- aupdate-global-reputation-list

- b9 @% \+ M% o" O' y6 {5 H4 v! I. ~9 I# ^% q: t; T! g
poll-class
8 J1 H, U; h0 D4 M0 q

* {# {6 r8 M9 ~! v: xget-color

2 W6 L0 P7 N, g- E1 {" z; k5 f- H' k! L8 i1 X
]]; R1 s2 ~8 e  `& Q: L
0 @' ^  G( d( w: h4 G7 z
;;
如果所得的信任度满足条件,则进行交易
2 [! i  g% d; g! s- h6 {9 b/ I5 {0 \# @8 D! H' a% x- B0 e
[
: n# o5 ?- G9 l7 h* x, R" M, D
( n& i# R9 _% R
rt random 360

/ E& G1 K5 S2 x- R/ a
, `2 E3 f+ x6 u  vfd 1
( t1 d* R# {$ I+ z0 b
  B+ l' _4 |) T& }* ]9 I6 W
]
  y& B, n/ v, b" E
6 k, S- ?: T4 M9 P! v) `4 S4 a; }
end

% S, p' K5 Q4 _- b+ I7 D
8 h# k% a  P# y9 Z; M+ \  |# Cto do-trust
7 ^' u; A9 u- x8 l8 U9 X8 Hset trust-ok False
; N- T6 ^! _* P0 k7 j6 ~3 P# M+ F  g6 q0 v+ I+ V" e% Q

" Q5 L' i( V8 h7 S* f0 q  Jlet max-trade-times 0' P4 @! D$ |0 c7 u& n2 p( ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 v9 M$ v4 u8 R! u8 T. dlet max-trade-money 02 ?. g0 I3 o) x& B4 [9 l) Y9 L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  o5 C- j6 D+ s0 ^% f5 A4 E, [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# d  P$ }/ M) E1 L0 {
& Z) D2 W( W6 d! f7 l8 g  V1 ]
5 g- j  M0 w' r! w# d
get-global-proportion
: m1 f/ n2 J1 S8 u3 K. b# Ylet trust-value' I* y+ N$ N2 G- w* L( W4 n& 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)

8 s$ [" n+ }! t6 m* p  K8 g9 S4 Eif(trust-value > trade-trust-value)
8 @1 m+ P- z2 e) U" W& c, V[set trust-ok true]
' M5 I: }3 ?9 T2 R0 c+ aend
! s7 A- C9 y' c% A
5 \* E) g6 y# ^) b" ?8 Y, ^! W2 Qto get-global-proportion
' {- l+ Z! M  k3 M$ O( u. D/ U+ R- S2 ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 T/ O5 o9 D/ P  ^1 g' F) V
[set global-proportion 0]
/ r# t6 [5 v, K9 D7 g, G[let i 0
, e- W1 j3 b3 D8 e0 Z; \5 L# s! Rlet sum-money 0
7 M5 d3 L5 @; }3 U, z! gwhile[ i < people]
7 t! {/ e* T1 k4 w[
1 f) s) h3 ]/ ^, `  bif( length (item i
1 g+ l  `3 }: S. u7 r  u0 x+ ][trade-record-all] of customer) > 3 )
8 s! z( W" q9 t
[
7 ^6 G2 Y/ M2 w2 m7 S9 Sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 l* J7 Q" D, h" D
]
; h8 v2 a$ T+ j4 `- S]" ~0 n0 s+ O$ `8 W- N
let j 0
$ ]6 b8 n7 H4 U+ Alet note 0
! Q2 F4 T* N8 b" P2 l: f# P, [$ y8 Owhile[ j < people]$ N  p% U; i9 @7 g1 c% T) z1 q
[
3 K9 g  |& k9 Mif( length (item i
  j8 L  N* N1 r1 J[trade-record-all] of customer) > 3 )
) s1 Q/ y3 v; ~1 o2 V3 P
[
: W2 g" r4 Z6 }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* s0 R9 r& v+ u) g& H8 Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 \* s% D3 _% _: O7 H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 d. X3 n4 h3 j+ @]' Z( _! o& b4 n8 }
]6 ~9 L* [9 U. o+ \5 L, ]
set global-proportion note
5 r3 d' e5 j  w9 t* {3 q5 k. `+ G]3 F$ G0 ~1 s" Y9 i" s; Y3 H
end5 u5 M% F3 ~& o& {! Q  m7 Z( x- u  k
0 j: p/ R+ D7 X
to do-trade' T" k3 p. {2 O% y6 Q# w3 M, O
;;
这个过程实际上是给双方作出评价的过程
1 O& M& U+ O" x# ?) E' Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 M- W& a- D5 \6 s) C- V- Y& E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& M6 N" M/ s" [& b  K" ?' ~  o4 }+ F: e4 lset trade-record-current lput(timer) trade-record-current
# ]5 |( M8 E. P* I9 q;;
评价时间
& j2 G" x$ l* }$ aask myself [* L" |4 r/ x4 }* k9 @4 K
update-local-reputation8 [! O5 y( H4 q8 {
set trade-record-current lput([local-reputation] of myself) trade-record-current: s/ q" r4 s8 a
]
$ ^: s. l* _7 I: kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' c! V" P7 M8 d$ i4 r# G8 W;;
将此次交易的记录加入到trade-record-one
2 c# |* w6 r  yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), K# d9 X& h0 N3 c8 o4 Z
let note (item 2 trade-record-current )) S7 C8 F" s- u) D$ o
set trade-record-current
  L5 A* x2 U' w3 w(replace-item 2 trade-record-current (item 3 trade-record-current))

5 z" J# u% L7 X" ~9 B4 Mset trade-record-current" B* U+ ~3 V3 k* d( ]2 {) m5 o
(replace-item 3 trade-record-current note)
3 p, f4 ^! h2 G& y3 t
, w- x, e* {6 W6 H9 J# s
. R$ h  ^! K+ q6 J$ \8 M
ask customer [* [6 M4 E& b: a( M- s
update-local-reputation" U7 p& c7 X3 {
set trade-record-current3 k) g; v: U, \) l/ ~5 g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 w8 R/ z# I! ]: P& O2 w
]9 h8 a( K, A# K6 F' d
/ s" D' {7 Z! a  U: i+ Q  p/ K

7 {6 S3 l) y5 T, J0 x8 m; i& J" I% tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* h# O; m' \0 `" E* O

1 P5 z2 x1 E) r# d4 fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# Y7 v) @* U, a3 u;;
将此次交易的记录加入到customertrade-record-all4 s, `  N, E' }( b. F
end
5 q: U* \. [; s9 ~$ V, t9 ?8 I; T0 O3 x' W4 K+ _; I. V
to update-local-reputation
( C4 b" r/ q0 c7 D" o" Jset [trade-record-one-len] of myself length [trade-record-one] of myself  [' h% a) ]" g2 X+ q: v# e
- U- H! y! I' }# l  n* s5 v

) \) B2 \. F$ c$ `  K; ~/ u;;if [trade-record-one-len] of myself > 3

# R" J0 Q3 H0 A" s. Aupdate-neighbor-total
3 a8 m+ {  G% _: S* o1 ]' x  |;;
更新邻居节点的数目,在此进行9 g* r" j2 h0 J
let i 3
8 O+ [/ L: \( s" N$ t. Qlet sum-time 0
( Q. z  Q, z; f3 p0 h7 qwhile[i < [trade-record-one-len] of myself]9 O- Y5 U( ^7 Y- E0 G
[
8 Z  H- @( G3 O" i6 t5 h1 q5 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) A. B, M+ t" L$ d1 j# e
set i" |2 z1 u8 V" X- ~- R, c- V" c# ~9 p4 H
( i + 1)

. C- L; v( ?8 o( V/ `]
5 N- {* f6 ?7 j" Glet j 3
+ ~0 g. x0 K  i, F( x' f7 I1 K  alet sum-money 0
) h: B; w+ ~, fwhile[j < [trade-record-one-len] of myself]
+ J5 Z9 b7 D( j  R8 s) F6 ?[
: n/ I( J( q' r$ ?) _! E3 W  {- nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 G' w' F  n8 nset j
" t9 x7 _$ S( H/ H$ Q5 ~# B1 w0 W( j + 1)

  g# X1 N  E7 ^7 u1 H1 l]+ G1 ?; g- c2 o! Z
let k 35 {$ v8 u* h6 D, z& T" u
let power 0, M* x/ k" I& ]4 K! e! m9 O
let local 0
6 w  l/ k6 U% X3 m9 p  W- y& I$ Ywhile [k <[trade-record-one-len] of myself]
% r# f, J! D$ g2 E0 ?8 v8 j0 d[, b; ~1 v/ h/ T: n$ A  R. G, M
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) 7 @1 j9 k+ Z! q0 L; T& T3 A4 q3 E
set k (k + 1)
0 y/ C( x" t( ^5 b# |]2 A* U* C' f7 I! N% x% ]: O
set [local-reputation] of myself (local)/ L, A6 `+ ?# l9 u6 z
end
! X9 p6 l8 v: d$ u" ]
8 k# e$ b% ?  z" A/ X3 cto update-neighbor-total
) J% ^* B+ ^$ t/ ]
& q6 u. _$ q/ U- z& eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 x9 l6 C; T* M9 _7 I! H  P

6 G: X+ `* e/ I& k% a7 r
; ^8 b$ \  k( ~$ a! H
end. J. y6 c; A' P4 Q
( n1 @. L& W' g+ o9 N: u  n6 Z7 E# I
to update-credibility-ijl : j; y, |& l' u

- z0 m  F1 X- R( m3 ~! y;;
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。
2 Y; c" z2 |# r1 [let l 05 {  e  w/ Z7 A, x& A9 e
while[ l < people ]
1 o& ^6 F6 Y6 {. |4 N4 O;;
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+ \5 `# \3 P# b. a
[
- x" z. |0 M6 K" Q2 G1 jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ L* H$ p' d9 M5 v) T) B& xif (trade-record-one-j-l-len > 3)
0 ^6 s: A% l  E+ }8 M. b[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
+ K' }$ t0 ]8 d2 D% klet i 37 S9 J5 V) x: M! g* [5 J
let sum-time 0. y' A3 D7 ^, Z4 y( G
while[i < trade-record-one-len]4 D* Y" k7 @7 }4 i
[
4 H! D6 T+ v8 M/ `/ Q: bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* A! X/ O0 [3 t/ ]set i
. R, P  G( g7 P) P; a1 R/ n' a( i + 1)

4 _2 A" n: D' e# x, g) H0 j]( I9 J, U, ~- q% c0 X) V' X4 ]9 l
let credibility-i-j-l 0) m6 @+ q1 k; c1 u" Z0 z- X
;;i
评价(jjl的评价)2 T# r5 ~+ Z2 K+ p) U
let j 3
" w' p' Y9 g+ |/ D3 @let k 4' d- }/ G, m9 c3 N" T) z0 i( d* j( x
while[j < trade-record-one-len]
* C  r3 m5 R0 ~8 |! z. {7 A# z  X) ^  Q0 o0 a[
7 |. `1 f+ R, p3 U5 w) V$ Owhile [((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$ [6 y" B& d  _, o9 m- B
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)
/ w: j9 a* O+ i. g6 N2 b8 nset j5 V4 g2 v) t3 k. h
( j + 1)

2 _& _$ C" i! E8 h' D% l5 w# w]9 A! y1 Z; F/ D: v8 \4 I
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))7 z( B0 p3 f# Y# R: a5 Z

2 X. i: S! A) x2 U! W; N. v8 t- m6 x
. X/ L9 o: p# a- t$ X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ a& N% L7 r. C& [* k0 X- S& u* W/ \
;;
及时更新il的评价质量的评价! k4 W3 V& p* D- p6 p# c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 s8 m8 N$ r9 D% p9 l% zset l (l + 1)! |% n. O- E" E
]
: [; Y- h0 C3 H& m$ kend
1 z9 I7 w1 e# h
, q! P9 H  i- T+ {% nto update-credibility-list6 U1 r) g9 A" q# x* |. l2 D
let i 0) B3 s! E# o$ d8 ~
while[i < people]
6 v) E# Z( U. `[
0 O. d6 e# g% Mlet j 0
4 I; w  C# Z1 w# wlet note 0
: L. b, L' a& v4 nlet k 01 j' h$ m+ M1 [% ]- M6 ~; ]
;;
计作出过评价的邻居节点的数目
' W) y( V# s5 S( |3 ~* a2 Swhile[j < people]
7 p) I+ T0 ^( M  ]6 f8 w- I: @9 F# x[
8 {! R% ^2 H0 z; p3 y) bif (item j( [credibility] of turtle (i + 1)) != -1)8 j- C5 u+ a% k) F( g1 K  h6 I
;;
判断是否给本turtle的评价质量做出过评价的节点
0 ?$ y. _) H5 T1 h$ o$ P& C; Y[set note (note + item j ([credibility]of turtle (i + 1)))
3 J. y" \/ ?3 V, X: q* f# g  ^;;*(exp (-(people - 2)))/(people - 2))]
1 t- V: y# ?  t3 ?4 j# [
set k (k + 1)- t! {9 i4 s8 c" ~# W1 z2 R
]
& f$ p  q% I% q2 P" J4 tset j (j + 1)
& O2 s$ Z9 W- g]
5 }. ?4 ~0 ?' T4 mset note (note *(exp (- (1 / k)))/ k)0 e0 s; ~0 |- a9 ^1 p
set credibility-list (replace-item i credibility-list note)
6 F7 Z1 u' K' I; dset i (i + 1)" m8 V8 E* K! k% ^+ d1 n
]
6 ^0 k) ]; b, K/ n3 P1 @9 Qend& K; N" @5 T# v3 h8 ]2 D1 y

; D: b7 a2 l  ?8 D* w0 mto update-global-reputation-list
; b0 m, E. N3 ?7 Y4 Z" N; Mlet j 0$ E0 e5 x0 X( ~( |
while[j < people]
" F* k  y# ~8 b4 c( m0 `[: r0 x4 y% R; ]8 G/ @5 P' o  U
let new 0
, o* W; r9 I) y2 i6 C# f;;
暂存新的一个全局声誉6 z3 r3 w! {# ]6 s5 [
let i 0
! Q4 y9 L. `2 o7 K+ R+ V2 b! F) }let sum-money 0; D% @9 d7 ]3 ]
let credibility-money 02 \' b+ Z5 T/ h6 P
while [i < people]4 V5 ^8 s( ?, e; B5 N' @- q
[
4 \( x1 }, z) A9 M( P% ~5 f  U4 zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' q, A- G( m9 T9 ^, n: \  w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) y" `5 d( f) B. _6 |" h' k
set i (i + 1)2 p& t8 U3 D0 I. J
]! U( q1 S1 v* |* A
let k 0/ \8 t( J/ m9 L" {
let new1 0* K; g7 d4 w$ c# d8 u, |
while [k < people]8 s; a1 r3 D% u! ?. F
[6 T' i6 D0 _2 R5 D* X" b
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)# Y9 A9 h8 S: y1 `- ~+ w: O2 O
set k (k + 1)
5 k) _; @" H- l6 K2 ]& P]
. ^4 |0 w5 u* @+ m" B( Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( D2 {/ z2 ], ?8 y3 e. sset global-reputation-list (replace-item j global-reputation-list new)7 A5 `. {7 a3 X- l0 h; h8 G
set j (j + 1)
1 ?% D+ u0 E  j; x4 M8 Z9 Y& P/ c- j]
. i" z% m# @. v# send
$ v2 Z/ h% f1 e( q
. A( Y$ K. d' Z1 |, r; A& G% @+ s  v' A: \" o, t! y

5 q6 }  B) \8 P4 Gto get-color6 L* Z: u, n/ D( B' Y% j

; T6 L4 S4 G, n) j$ P; z4 d( K; Zset color blue

1 ^) \7 m" |0 i" J; n7 Send
' k1 J- K+ v7 z+ ?7 `
( A. u, o9 O7 u* S+ q0 o) {to poll-class2 h! r7 h5 p7 n$ ~
end5 a. K4 v0 k' ?0 S9 I1 W1 Z2 i/ _

' y4 ^" j# y7 [( O+ `7 ]to setup-plot1
, z" C- H( b7 P8 a' O( i" E" J1 f9 q
- s* m- x' ]- x6 @( B) zset-current-plot "Trends-of-Local-reputation"

; Q) i, H% n. j+ ~+ G  _5 P6 m
! d' `6 o3 n& x, r" @set-plot-x-range 0 xmax
) c4 _9 k; f5 A; W
; w( X6 x- u8 [3 Q
set-plot-y-range 0.0 ymax
& l/ M0 m" S% v0 x. G
end
. m6 E, P3 G' Q( E7 O+ d( O
) F7 Z/ t% @2 Z/ q" W! D! H8 E+ I/ wto setup-plot2* ^' E& f$ Q- d

: r% D5 O2 e8 E2 R- v: F1 lset-current-plot "Trends-of-global-reputation"
1 q/ V! S; `, r
; _( a2 ?; t+ Q2 z4 P# E  T4 E7 O
set-plot-x-range 0 xmax

7 m- u+ v1 |0 `+ b; K: f
3 Q( x9 S+ I0 }+ e  m$ ~$ Dset-plot-y-range 0.0 ymax
& T7 h7 r5 z+ u0 a+ V% I( u6 t
end0 P; L! I0 V: v- I% _8 g& X

( P2 ?: \/ e3 m( I4 B, Jto setup-plot3
9 j8 @* L: P* y" C' o! n; Z0 u) q7 S& p' t! m0 F6 \
set-current-plot "Trends-of-credibility"
) H0 s" e, y( @$ {. L1 w' L, O

7 `( j; k9 j8 r9 [4 {1 tset-plot-x-range 0 xmax
/ E. k5 F% H3 R0 k0 k
9 }; ]8 i( j4 Y4 P! ^* J- V
set-plot-y-range 0.0 ymax

8 B7 @; E, h' Y& |end
. i  \4 H8 V* t+ w; D- v5 ~; e* N6 [  j
; b2 B* x7 L7 I- O% o7 T1 sto do-plots  K! }+ X. c7 ?$ r% I7 J9 F
set-current-plot "Trends-of-Local-reputation"+ K- P& q- Z/ j$ e
set-current-plot-pen "Honest service"
8 z6 R: E" Y; x) J4 t- uend' P; p, l9 R- J% |, N) u
9 B2 x3 W+ B& t& L* Z
[ 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.
3 v0 U5 ^  o( q7 o# U
- I$ u- z. U1 `: \5 z, U' A, i: B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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