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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 e3 E; f' S8 c& l' A- }
to do-business 8 c3 l* s8 x! |
rt random 3602 _! ~. O0 N3 A/ j
fd 1
6 B$ P* B6 A& \ ifelse(other turtles-here != nobody)[: V1 d5 D; }; y' T5 ?- d1 U& R- w0 D( x
   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." w3 q* T) t8 ^7 U( p5 X* z3 U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 L! ^9 X5 E: i2 J- B( v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 X- \) C- h: S+ V/ z7 Y  Q   set [trade-record-one-len] of self length [trade-record-one] of self4 l  A; a4 ~+ @' W9 H+ E# J
   set trade-record-current( list (timer) (random money-upper-limit))! ]2 F( R0 h  i* [1 ]

* @4 w' o4 Y1 T3 G问题的提示如下:% J7 W, N) B) N! j

& v* W$ `* P5 }error while turtle 50 running OF in procedure DO-BUSINESS5 X' y$ W7 @' B% ?$ t
  called by procedure GO
7 m: n  f4 N; Q# T6 ]6 aOF expected input to be a turtle agentset or turtle but got NOBODY instead.2 t% \; ]: O8 \
(halted running of go)
5 {% s) _5 e; F, X& t6 Y3 ?6 S3 w* [3 L, E9 G( f6 a
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 Z5 u# Y5 Z- j( f  W5 m
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
( h3 C* |" @, bglobals[
/ e. d6 W. T' b3 m' P0 Wxmax
6 a' J" ?) X9 q9 L* ~ymax9 l+ Q& C# Y. n  f- T; @
global-reputation-list
( g, R3 L  g% d6 k
) b: v7 ]/ C& y& n! v, ~( Z) {( F;;
每一个turtle的全局声誉都存在此LIST; q2 a# Q8 d' }
credibility-list
% M0 G* U% l$ A6 b" @;;
每一个turtle的评价可信度
2 h; L/ H. J5 l1 u; _honest-service
9 R: D' c; r" A, L  Uunhonest-service& |. R7 G9 |2 ^: U# w
oscillation% F/ H. g' U, q$ O  Y8 e! n
rand-dynamic2 }  c0 ~6 @$ {' b4 I9 j# c7 ?
]( [3 h; P7 w" @+ U) w1 ]+ f9 g1 ?

$ u$ m  C( ~' y; H" lturtles-own[
( T' r( F7 x3 M% @: Wtrade-record-all
  k* u/ i  Z: d5 u& O- s, q4 }8 E;;a list of lists,
trade-record-one组成
- A$ }! F  Y3 t3 p7 f" Mtrade-record-one
1 s/ l& o$ [: a. M( v! U: A& e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& t5 a% u( a! c' A: o( y; N8 I
3 _% y% A& r2 Y5 L2 Z7 d) Q9 @/ @;;[
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]]
; Z" @8 y7 x* Ttrade-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]8 V4 }  M7 [, b7 L
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
& D6 L" Y5 s: X5 ?8 mneighbor-total
5 A* _1 z! {0 A' u/ E" ^; r;;
记录该turtle的邻居节点的数目4 k; ]4 M. f1 F) R( `) N
trade-time
1 }! E" h) J; n+ j# C;;
当前发生交易的turtle的交易时间
' h/ h$ m  W( j3 {7 Happraise-give
& G! g  |. n9 B. s( _$ O0 v;;
当前发生交易时给出的评价; a+ H$ s+ p. o( w: O0 q9 y
appraise-receive
$ Q: e8 t) G1 {2 v4 E) y& B! H  v;;
当前发生交易时收到的评价$ w$ q# S4 H  H, m, j
appraise-time; _1 C9 H8 n6 B# }7 M$ Z
;;
当前发生交易时的评价时间
) e& S$ n  T+ a' @/ r- qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 E# ^, q6 K) K* P7 _( @2 `6 Wtrade-times-total
% J, O+ I6 `) ^+ @# H( l;;
与当前turtle的交易总次数
; ^! l* K& t9 Q. I* w* v( `4 ytrade-money-total
8 f0 @. J8 l0 _  M# W& r;;
与当前turtle的交易总金额+ f& r) x# x) ?- v4 t; R' k6 y
local-reputation
2 b! e& i5 T& h6 |" c% K% W# vglobal-reputation
) r" F" j* S) mcredibility7 M( L# W# ^5 h9 b) S: S/ d
;;
评价可信度,每次交易后都需要更新
9 M" z/ d3 B/ X  G% ccredibility-all$ k3 J' e3 S  O5 Q
;;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
2 t) I: }, [/ b4 l" L
5 r5 F  k$ Y7 N: m9 v;;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, \' ~) H. n6 x7 s# \+ _
credibility-one) h2 _) [7 [' _2 |9 ^) 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people4 r% R& n" o3 o$ J+ p
global-proportion
( z/ R( t/ p  E; Bcustomer
" i) G% {5 J9 b. o8 W+ y" kcustomer-no1 A* Q2 Z: c! `& L4 F
trust-ok
, D$ G5 L" [3 B& h  Q; Ptrade-record-one-len;;trade-record-one的长度- M5 U  {4 O# E. j( r/ p/ U
]
" w8 W  u/ D0 G8 g" G4 E
5 @2 _: |+ k- _9 T;;setup procedure
( W$ ?; E0 ^% b* k9 L" T8 P8 l% B! M2 s5 |/ J" l' i
to setup
+ z3 u0 G& d  f" M/ S) }( c6 f5 X& d4 U' `# E" J
ca
' Z5 n( j% e9 X3 }7 L6 o
; q/ W/ @* K, B; n5 L5 }& S
initialize-settings
* k  O- N2 z: l7 J  [# [, t
6 h+ s0 m6 l& j' ]6 H" X
crt people [setup-turtles]

. H7 G$ x3 _$ I8 ^
2 Q3 l  }* H7 D1 Q: `) Q* Creset-timer
/ s. P4 {- I: x
- }& l) m2 [8 Z' _/ }, v8 m) ^8 p: r5 i
poll-class

1 ~6 H4 Q7 I$ A7 @5 A, }9 @8 Q" p# u; K/ B$ \8 `& k# e* i# J
setup-plots

5 k) ]* p8 R* P/ s& z5 w: O9 o; S. ]7 B  c- p: G& F, l4 d
do-plots
: m3 m/ c6 ^# O( h
end
% m, j8 E) H" r9 x) O7 Q. J; @
! D6 H, v; \5 o$ a" nto initialize-settings
% Y5 ~9 H3 M) S5 y" p& J( O+ [
! W) T, b5 V" p$ d6 C6 O) qset global-reputation-list []

+ |/ U( }" O2 r2 w; t0 ]0 B: w4 L; D: f# E  p9 h
set credibility-list n-values people [0.5]

* G- i3 O! t. g5 |$ P$ [8 ~
9 @" l/ V7 [$ f$ d5 c2 o5 Kset honest-service 0
( g7 ?& o, K. Y$ x# g

9 b. W9 T8 {* O  A& p/ k3 jset unhonest-service 0
" B: z3 M, J1 Y- g/ \" o* t

* Q0 l0 v% k" Y  K; w& _set oscillation 0
7 `! v( y. o0 B! x+ C6 Y& [8 s

; D1 J' m  k  l' Z1 O7 }( X8 @6 ]5 \set rand-dynamic 0
1 u: d& o% r7 }7 a8 I* q& l
end
1 v9 {$ R3 r" D
% B- h9 G3 g" W  ?2 v* k! K4 ato setup-turtles , l, M) B0 i$ R, h" d8 _, Z2 Y
set shape "person"/ `* u0 m9 V; [8 q  ^' S
setxy random-xcor random-ycor) Y5 M  ?) z) s2 x8 v
set trade-record-one []' U" T8 k% f) n5 c' C: ]

. J. ?6 J' s  b* v* Z+ w$ |8 ^set trade-record-all n-values people [(list (? + 1) 0 0)] 1 Z* |3 ]" d6 o# X1 `9 ]
# W5 _2 W4 N5 ?" B) S, {- M
set trade-record-current []
! o) I3 l8 ~. ?/ S6 h0 I1 @5 pset credibility-receive []5 k* c: m. b0 _7 d) B& e& K. _4 i
set local-reputation 0.5. @# Z8 `  t1 m8 G" A9 d7 ]3 k
set neighbor-total 0
8 Y$ _; ~' X; oset trade-times-total 0( |, w/ E" E5 i6 t, E
set trade-money-total 0
' m9 c4 A  j" Pset customer nobody
5 p0 o; N3 ^' D8 Gset credibility-all n-values people [creat-credibility]4 v; W2 U+ I1 D8 q
set credibility n-values people [-1]
: I& H9 p2 ?3 d$ z4 r" {get-color
1 }: {+ {7 M1 j8 [. D% L- @5 X+ {

" X/ `6 y  ~! Z: K0 D) Send& \3 o5 V9 g3 L  A- H

+ A2 n7 \  g1 F% U9 _# J' Gto-report creat-credibility3 c8 I; x" d0 J! @) K
report n-values people [0.5]
1 c* O- P" u0 S( Tend
7 A" h, h8 w; |! O) ?6 z
! @+ N  @+ T+ z) hto setup-plots
1 t( s+ Y& }& U. F9 ], y; }$ ^( d( B- f( c# g
set xmax 30

1 P# E6 \; ~' w
+ U6 _/ O& r/ m: bset ymax 1.0
/ N6 [6 L  j8 d/ l+ w: `6 t
1 ~7 s; ]" d7 E/ y
clear-all-plots

3 y( v2 v* O, @  G
% c; @* c7 M3 dsetup-plot1
" L$ ~4 ^* V/ Y* r
# @/ C$ k  N2 |* b
setup-plot2
0 Z' ~; h6 f6 ?9 t9 J3 T: }, G* y
* t1 C/ ?% h% R* ?
setup-plot3
4 k: R5 v1 s, p3 \3 k; W) Y
end6 s8 U: p5 `4 r# C8 I$ t

1 y8 K$ ?; q( J: m' ^0 K) w! F8 C' s$ F;;run time procedures
9 l! U8 s; }7 F0 ^, }' I* _1 E! E- R5 t2 v/ t  B$ @
to go
" O# Y" M. H& z+ k2 s2 y, d% U' V3 M$ \9 p% Y
ask turtles [do-business]
6 N1 U) T$ b6 @( {1 o7 Y" M
end/ e- p! l- ~" u# T3 ^& I0 b* ?

; t7 T" J/ e% F# V5 ^( ~4 ~- Cto do-business 2 s5 a: }/ M7 D4 D

. {/ c! r8 t& s; c% L
3 n, ^7 \+ f# C! m- {rt random 360

2 R- P. s" L, P$ c, [: \9 M5 y0 t
, r6 r% B: u9 p" r2 {fd 1
3 i; z. g4 Y: E0 S
- n" n/ A( I& ~& q% z! M
ifelse(other turtles-here != nobody)[
: ?5 X& @" D5 O& f! u5 N- O$ J2 ~2 t/ B

& v7 \: O) b# ]/ E$ Fset customer one-of other turtles-here
/ `  ^4 B$ u7 g3 A+ d- D

! F6 f' E  ?. J# f" I;; set [customer] of customer myself

5 ]- U; k0 S8 W9 b
! a5 }8 Z0 G1 {) j; [5 zset [trade-record-one] of self item (([who] of customer) - 1)
" W! t, z8 I/ V; _8 j* P[trade-record-all]of self
2 J9 T) ~  k7 I: |6 Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% f3 Q5 K7 y/ v# C
4 n! y- {' r7 S3 h7 q- I$ s
set [trade-record-one] of customer item (([who] of self) - 1)3 O1 S9 p8 [$ a9 y' m
[trade-record-all]of customer
; `$ {% i! z4 D$ e, j6 a# F

* B8 c% f, M2 d7 {set [trade-record-one-len] of self length [trade-record-one] of self

/ i  ?4 `, w/ D3 S; G  p) W# [
$ C+ X, k7 X0 lset trade-record-current( list (timer) (random money-upper-limit))

/ Y# I2 A( e& D& ]  m2 _, ]# T+ f+ e1 z3 S, B, }
ask self [do-trust]
1 `2 a8 n, X9 f3 n& O; A/ l;;
先求ij的信任度
$ s4 k  h0 G. I! P. L- ?2 Q8 T! g
if ([trust-ok] of self)" |4 V7 ~; t! ^+ y+ b
;;
根据ij的信任度来决定是否与j进行交易[
1 {9 E* S" f3 u7 V5 Jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- {8 g( R* ?0 _# m! a8 D4 u+ N5 a# g5 x
[
0 U$ `; M5 g8 T/ }

  C. i2 P+ W) U, V8 mdo-trade

* R$ f1 I' K  D" i. k  t* ?
2 Q3 }3 Q3 l0 B9 tupdate-credibility-ijl

! X/ u$ F$ V- ]) d3 E6 `9 O6 c
0 y. E8 J) @0 f7 F2 K3 J( g1 d1 nupdate-credibility-list, u4 ^& T2 I! l2 h. |$ n

+ z5 [, ~, }7 v8 q( V/ {/ h0 Q- f1 W8 \9 O- W, B, h# y
update-global-reputation-list

# F* Q, J+ |! k# j, K
8 }3 Q% r6 @* ~( @( E) F& b, Z0 vpoll-class

) h8 l; ]+ Q6 J$ U9 D* S  n7 H" |7 j/ X. Q; ?: f- I* Q2 I
get-color
' R6 S0 w! N/ `) s9 [' w
# S3 q8 i+ ^, ^) r! s6 Z1 c9 R
]]
7 C8 `3 n$ s! _4 r% q" |9 _' @# T; s! A  R8 j$ X6 Z
;;
如果所得的信任度满足条件,则进行交易9 m: ]' k) ?; k9 z/ n

6 W' ~8 ~6 C* `$ j: }[
# [! C' t! ~* i' w: ?2 q! J: a* {
) _7 r" j! I! {) r2 M" i' H, h
rt random 360

; l* g7 ^" S. D$ B8 R
1 }# A2 M1 v# k4 J- xfd 1

! M" f$ v2 `0 s0 _5 |: P4 I4 _. t9 O2 u  H4 Z. j' d
]
/ Q6 j: Y. l# i2 ?3 A! k% e2 Z9 X
  T# o$ i# w( E, O- m  P! o
end
* n6 p3 m4 i, E0 o4 B2 K
$ p& I2 M+ `1 e
to do-trust 2 J1 }: }& I: c8 x* P
set trust-ok False
. [4 H- T3 t. t4 E: M& z# ?! A9 i4 o" ]$ s$ n4 p" M6 u

! R$ T6 l& v5 R- }3 z# \" ]let max-trade-times 0! {) U: h1 f: O  K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: W. _, C' f/ M; i6 E
let max-trade-money 07 S' M& M9 S' M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' y$ A1 G$ ~, t9 a: K3 W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 p6 t, P4 X1 d/ p- O0 z3 a
2 ^, _1 A& z# X  b1 w" @2 _
  ^7 J# T" f3 W  q6 b8 t
get-global-proportion
1 ?0 l( q% W! \  j9 Alet trust-value$ p# B$ l0 D# O4 v' 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)
' J  w) i9 \! g# O
if(trust-value > trade-trust-value)
- @4 x  S: k, D# i+ P[set trust-ok true]
2 A; X# D; y0 V% r$ ~6 m' r- Xend
" n+ m- U  m) W8 C. v( Q. a. o$ G% o' o4 [9 e
to get-global-proportion8 Q0 L+ C6 Y% j# N% X- z. I# ^
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& ~6 k# d( `( q2 @& u6 q; _( @7 h
[set global-proportion 0]0 J9 I3 I- ^% ~7 D
[let i 05 S* [0 ?0 @- ^- R
let sum-money 03 l1 j, H# t; P
while[ i < people]
0 Z) v# j- B1 O7 O5 @* `' H5 P[
% m: |3 z8 y/ |if( length (item i" c. a- @3 f! I
[trade-record-all] of customer) > 3 )

# O+ Z9 w* d8 X* [) S1 O[
$ Y6 V: {9 W- G2 @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" |' N3 x5 g: I1 I& E; i* d
]
, T3 W0 m" ?  o* P]  X! X( }. c" S6 p' W
let j 0
2 q4 B- l: ]( f7 Z3 \0 v0 c; Glet note 0
9 d# r* Z' z; Lwhile[ j < people]
/ o# x" C0 ^; K, C( B1 U[
4 a2 W' z8 _; @# _( d* Hif( length (item i* J$ T8 q* b  H3 G% U
[trade-record-all] of customer) > 3 )

! J7 W1 N) H. o1 A1 h6 Z[- V- A# Y, b% J% D( j# \
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 ]# Y8 W5 E( i; {[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: h' d' z' y$ {3 Q" G$ Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 C- Z% n$ |: d. o1 W]
( J# t/ N$ |7 m/ t& j) S9 E7 b  @]
# u, C* G! U' \: kset global-proportion note- a; _  N7 F6 H: ?* u  I7 Q5 _2 C
]
4 |  R9 A: V* z& cend% S0 M1 t7 _( W4 r2 R: {: }6 w, C

+ @: h- m  a/ d- A& Ato do-trade
2 T* ?( b3 U. y, n;;
这个过程实际上是给双方作出评价的过程/ ?! ]0 Q. u) b2 b, \7 |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" @+ s! u/ Z; q: F1 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 e6 ?! g* V: K( dset trade-record-current lput(timer) trade-record-current* n* x) k2 K6 q8 n6 x
;;
评价时间
% F, u% y$ D% d! g9 Q  Lask myself [
$ H# `4 s" d! V/ ^( yupdate-local-reputation$ U8 R1 V* t. N1 J: i2 V) _/ _
set trade-record-current lput([local-reputation] of myself) trade-record-current) m! j' h( n/ ?0 V  {" z
]4 A0 k7 g- x9 m7 L' r. _% R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 h# q4 R; l5 j( x/ h8 O
;;
将此次交易的记录加入到trade-record-one! H9 v3 U# @: p$ @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ _4 X6 s" G( H2 mlet note (item 2 trade-record-current )! s/ d$ ^6 x$ z4 s9 {6 P
set trade-record-current
. _) k- P7 E9 m. G7 \5 [(replace-item 2 trade-record-current (item 3 trade-record-current))

1 z, J# y2 a0 jset trade-record-current
, ^" L# {( B+ w2 R. ]* A- H2 M(replace-item 3 trade-record-current note)
7 `/ R2 }" R  O" Q
, }( `0 ]* t1 N) {
3 U; W' o" v  H: J: ~: U( z6 U
ask customer [
* r& o& G$ ^/ S# ]  gupdate-local-reputation
! Y# O! Y( U' Qset trade-record-current: C) j- |; R7 [3 Y  `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 T0 A5 y+ A# f% U& `& c]# N4 S# q* ]6 y
- i# `$ p* [# Q& S" J& z
( Y/ u. ]( T  b, o: f! O0 X, _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! m5 K( [3 T/ n0 Z/ q, v& l9 H
" M, F( S, B7 m- h; m) m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  S0 z5 T5 Q4 ?9 x1 q$ P# @;;
将此次交易的记录加入到customertrade-record-all6 X. G) y. t, t+ w# ], t9 B
end- Y# S9 e' o$ B, t

) \; I8 I  w, Qto update-local-reputation
0 T! C: D; C; T2 F, lset [trade-record-one-len] of myself length [trade-record-one] of myself4 \2 T. C9 q! o
/ `- a! p$ j# `# ~* P6 K
4 O3 {8 O" G' N4 {+ h
;;if [trade-record-one-len] of myself > 3
! c' `/ {6 t- \* {. e, v5 s; F
update-neighbor-total" k/ C4 I6 y1 ^+ k4 \
;;
更新邻居节点的数目,在此进行# ?7 s! ^& Q+ f6 z; g& a) r- s0 ~
let i 3( m$ m4 z# s) \# W( F
let sum-time 06 X% ]7 m9 b" v
while[i < [trade-record-one-len] of myself]
1 p! L" c  y/ O( U- {: V[
0 L8 K! |8 `" m. e% g1 L( |  gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' y! k: s% |5 X0 G' |) t6 t+ Z
set i7 f2 I/ \2 d3 Q* p7 K6 C
( i + 1)
* Q  U0 N" E& @, C3 j% C
]6 {7 R% B0 f' j: ~4 z, M
let j 38 z8 ^' d$ Y9 C; \0 Y
let sum-money 05 |  H/ i7 b& q0 o$ R
while[j < [trade-record-one-len] of myself]
7 r: X5 W( @: |; m[  k+ G1 x. D& h3 z' m
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)
0 q% _* L, z6 wset j
, \& {' v' \% Z, {: w( j + 1)

$ a( z! w# f! u! m' c. _0 |]
! h* I! u! r8 f; j. [0 Mlet k 35 Y6 W. F; z7 y
let power 0
8 ^9 J% C7 \7 P7 J% Ylet local 0  L: ^' \2 [0 z/ p
while [k <[trade-record-one-len] of myself]5 V1 [. X+ q2 `: y; a( E
[& P! B8 Y+ V, b- F/ [( \7 x
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
- A+ ^$ {# @- w% Yset k (k + 1)
% m' n! q$ m1 {) t2 o]
. Z/ G1 P" r% ], }9 eset [local-reputation] of myself (local)
1 N. n9 ^, f0 o; e% Dend  a) u* Y) w$ k

3 X" ~) i4 v  V8 `to update-neighbor-total* h" ~  ^( [$ E# d" A
! c) V- R. \7 I$ l' Z; d! z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# _, N  W; h- D! B; `0 t6 I9 R
8 ~/ Y; U. h8 ^0 u

# Q2 N4 R; E+ y8 ~8 ^5 i5 |end4 ]! c4 v  g6 X0 \) t) v
+ G, D% o0 W, W8 {0 b5 u0 F6 ?
to update-credibility-ijl ) H# R/ a  c' ^3 l5 A. b9 v% b
* R6 b: Y& e1 b7 h; s
;;
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。
3 g  A0 I3 |* J  Blet l 01 v2 ?% ^" d6 y. B
while[ l < people ]9 [% U& D: s% e: S
;;
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
6 [7 w1 e6 R# \- }: U( E[
0 g& z; f7 x% jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 D/ y" M9 E/ m( |
if (trade-record-one-j-l-len > 3)) i; V6 T+ d; l
[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- j, G* P; |. h) X* j' y( ?$ n4 e
let i 3% M4 w% W  E* c( e5 T3 K5 K6 s. a- r( V
let sum-time 0
1 W. {: K6 W6 z, R- L2 q) R2 Gwhile[i < trade-record-one-len]
- k5 D( Y" w& d/ D* C[: `. @; @  ?8 H- J" L& U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: u' g* h% S$ H1 v) T) \7 _set i
% u: F- a# u, e& w: [4 c( i + 1)

, J5 `3 k7 x% s, s) c]
, D0 k: m" }9 H, Slet credibility-i-j-l 0
1 ~: t, Y# p0 j  @;;i
评价(jjl的评价)9 }1 L! u# C; l+ E3 d! Q
let j 3
+ b7 q$ I! W- `; `let k 4- @! Y+ p, r! O3 m, ?
while[j < trade-record-one-len]5 Y' |2 I! M1 J5 ?0 |# m
[; Q) c  `/ V* ]+ |( R
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉, x6 \! y7 Z- R1 b% j4 O
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)& S# o+ X# ^& K. T4 b5 ]6 \; q7 O
set j
! j+ |% R7 l8 O2 O3 ^" V( j + 1)
3 S1 _5 Y. G- M- c2 I3 c7 f
]# ^6 v+ ~: Q3 b( u7 O9 M
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 ))* O% x) H2 w. A4 B# O
: Z8 ?/ s6 w# n7 i

8 N% t6 i4 A+ X, nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 k$ T( h, o/ m7 B' _. X5 I
;;
及时更新il的评价质量的评价2 E' j- y$ x" P% L& x  I! o# ?  I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- D2 y. Y' U4 ]* b5 O9 Yset l (l + 1)
2 \; Z1 k/ @: X: r! C: A7 C  U0 L) J7 J]
2 r2 d1 b! N- F% X% H, z  E7 ?4 uend- k/ }5 p, T5 k. j: k, o; W
7 _" K9 r3 j& ]6 Q8 L
to update-credibility-list
& d, f9 m+ ?! q: Elet i 0
% t, D& X  O! y2 ~+ Kwhile[i < people]
1 C- e" }- B! g6 z1 i& f[
, K, k" [1 w7 n* [let j 0- j% j5 \$ V6 i. q
let note 01 y  d. X1 x3 L, Z, B2 w8 ?
let k 0
3 i5 ~2 p3 y; _: i6 J; `/ ]  @;;
计作出过评价的邻居节点的数目( x3 q: Q  c0 N* A
while[j < people]
& I/ L+ F" |! J[# U- Q  r; z/ n( G6 v
if (item j( [credibility] of turtle (i + 1)) != -1)/ n" C' q6 @: `8 O7 z- Q  J
;;
判断是否给本turtle的评价质量做出过评价的节点
8 d/ s0 [1 s9 p3 ~) m9 t3 o[set note (note + item j ([credibility]of turtle (i + 1)))- g- |) z, }/ T2 X: N4 K$ Y
;;*(exp (-(people - 2)))/(people - 2))]

* S4 f) f$ T% ]# R  C0 Fset k (k + 1)
" j) W; {7 ^$ [( @/ y( u/ A$ M]5 X+ P: N4 a" E9 L, ~5 H
set j (j + 1)- O0 h% ~$ c0 X9 T) N
]
7 T- e1 b5 Q% j* p' Bset note (note *(exp (- (1 / k)))/ k)
2 k  W; k; y" eset credibility-list (replace-item i credibility-list note)
; E! w. B* K2 T1 j% q( l7 Y0 Gset i (i + 1)
4 O' @1 c& C- \4 |5 U5 V/ |: j]
3 f" J/ C* G/ P7 ~end
, m/ S8 S+ K" E( t2 d: D; k1 P) C8 T0 f  d" o  @
to update-global-reputation-list
9 W! U0 v8 K" n2 h1 K- Ylet j 0
' ?" F( @, a' m9 `& ?5 _. v! I7 b8 S% Owhile[j < people]
0 N' q# S& ^" T; }, {2 F. B[
" h1 P5 c; v% ~! o7 Glet new 0
$ X. N  J& w( ?: {, F;;
暂存新的一个全局声誉* D6 ]1 M- Q4 }& c% m
let i 0
5 V' W0 \  \  `let sum-money 0
8 C4 q& f) b$ O5 y4 R$ I3 U% ilet credibility-money 0
* n, s7 }6 g8 j. e! z5 Rwhile [i < people]& j" y/ H; g4 |
[8 V% x( T5 P; K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% W: t1 P/ s" V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 X$ [5 P  `  O& B% iset i (i + 1)6 v5 m% ]9 P9 X0 R" k: ^
]
1 {' ]9 M$ s/ q1 V1 l! ulet k 0
4 y  _' ?% L6 f3 g9 d6 U1 olet new1 09 t: U5 d# @! D3 C4 {# |' @
while [k < people]% Q$ i; S! Q2 `  W; J  r: N
[9 {/ e7 Q$ M" U
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)
% l  ~% E8 q4 aset k (k + 1)
7 k4 O% |! g+ ~]
& N. N5 ^6 C" _' G, |( }' M; wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " G& |# x% j& h* p3 Z0 }' F
set global-reputation-list (replace-item j global-reputation-list new)
8 H2 _4 R" x0 U9 D/ Vset j (j + 1): |$ K( U9 T6 v( F$ W* O
]; H3 `' m- h* h5 P0 q- I
end
9 O4 Y- k  ?- ]& }6 V% r1 @' {! z9 G( C6 I% _
( V! S# n% W, V. q

* f  {" P6 ]3 N9 v- G. Ato get-color
/ e: s- L7 l2 o
- d1 u. Q5 {! _" g: m! @* dset color blue

; Q$ \* ]# F0 ?- L7 r5 M8 ?end
1 p% k( z% l4 F% Q' S6 W' n0 j# |3 U7 q0 f9 L  g5 @: ~
to poll-class
& @5 y8 z$ C# F" [, wend
7 k9 g& H/ @: b0 D8 F
- t/ E" D. u. W; M9 _to setup-plot1
. y; l; V2 n+ v1 I" P, s' ]: F, `
  O9 ^8 R) |& R' y* Xset-current-plot "Trends-of-Local-reputation"

2 D1 m9 \# H* |' V  d, t8 F  D$ O
- ?1 _( T0 r9 S. t" V" m! Zset-plot-x-range 0 xmax

2 g5 n3 _8 B3 `3 C5 a
8 o! C3 j8 S" g1 R* y+ ?0 b6 hset-plot-y-range 0.0 ymax

; _8 k' e3 ?/ o8 ]* f0 J/ q% `end7 P, _, M6 i: P* Q8 P' K

3 c& }( ~# H7 lto setup-plot2- Z; I9 A, {6 b% d5 U

2 u: d" R7 O2 I" a) q8 Hset-current-plot "Trends-of-global-reputation"
$ _9 {" W" L0 o  s* h: ~

3 `" z8 |8 e" v; Gset-plot-x-range 0 xmax

' D1 ^* |% V, P* E! j! ]
& M4 n5 r2 {* C+ T; @, n3 nset-plot-y-range 0.0 ymax

) U1 s; O  c6 r3 Z8 J1 Vend
* Q- ?7 u. K- @  e- @% c( r$ V2 U, t+ d
to setup-plot3
9 L$ Y* L, ~7 Y* ?3 Z1 ^& D" I6 y- k' o/ N# {( f) B
set-current-plot "Trends-of-credibility"

4 ]5 L: e1 a- D7 x- F1 B# X7 r4 C" R+ D9 G
set-plot-x-range 0 xmax
+ X% `- P  S% z9 @# y4 K8 b
7 V/ M$ P6 N6 h
set-plot-y-range 0.0 ymax

9 T$ m' N* ]7 Zend# c' ]% [* T. A# f& S0 e
% m% R4 Y* W! a5 h6 \* V
to do-plots; T4 U  ~7 A2 n. [, F9 P" D3 v
set-current-plot "Trends-of-Local-reputation"4 [) E' V) E6 j1 X, K3 J
set-current-plot-pen "Honest service"
% y- w- A1 z0 |5 A' g* Lend* j8 z% I) h" G: T! ^2 V( N

$ ~4 h; Z* V! }* T# W$ t[ 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.) U# \6 r2 g8 `, G& K

/ P+ z7 ], ]) ^5 Y$ ?- h! Y: ?. q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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