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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:
$ N' q; U: V6 w( @2 V! y* Eto do-business
, F' O  B0 A% i" }8 M( z* s rt random 360
. ~4 o7 Q0 @0 U; r/ j fd 11 l( Y( Z9 P! i% B7 u" \% ]# }5 q/ R! h
ifelse(other turtles-here != nobody)[
! J3 z) f8 `/ X  A   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.8 P. R3 [2 x3 v3 j
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " O( Y% [! ]' j/ ^! n( l  f! O0 n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" E. M0 I5 O0 _% t
   set [trade-record-one-len] of self length [trade-record-one] of self6 b4 h, t; p) t
   set trade-record-current( list (timer) (random money-upper-limit))! H5 C- }6 x1 a$ T

# K3 b0 ~# u0 I0 Y问题的提示如下:6 h+ N) i5 H0 `- R( c, Y! u) o7 a

! H- v9 M0 G, [. n) gerror while turtle 50 running OF in procedure DO-BUSINESS0 Z( b3 A! _) S+ j0 @. R+ m
  called by procedure GO9 z% U( g8 G8 ^* O5 k7 E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 ^- B3 j7 `9 X/ w! M
(halted running of go)
2 z1 X# l- a& O7 V; ~
7 ^; _) D( J1 C4 s6 i& K0 U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~~
2 {; U/ v3 R* M& X. m! w8 O: {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, a5 \- K( }0 t7 @( n3 b' v! ]
globals[
# c& O9 J' f, r, {6 }% oxmax* j6 P3 c* [3 s6 w$ f$ O
ymax! B) d: K( F3 B. G$ ?0 r
global-reputation-list! e5 W( u2 F, e8 [9 S- ^& |

! o; {/ s' B- T; H* |;;
每一个turtle的全局声誉都存在此LIST
/ H4 m8 a) \# x1 Y. x& Scredibility-list8 D/ U3 p4 W- q1 v% r
;;
每一个turtle的评价可信度
; {) T% S; \5 u' @honest-service
! ~' f# @0 R$ y. _5 J$ uunhonest-service
. h: z( j7 j0 V8 Q$ ^( l+ \oscillation; w6 @2 w. a( ^8 z- O
rand-dynamic" @0 J' w# A/ e; `' i7 y
]
! B( B$ x: z% E& ?6 G* t5 j! W
5 x) |2 w0 K  p0 b; Q3 dturtles-own[8 W* F9 Q7 B( q! ^9 b9 U  A
trade-record-all
; A' E3 L! A% Z" N& w9 l1 x;;a list of lists,
trade-record-one组成  c" @6 G$ i# |8 T/ C" r3 H( C- P
trade-record-one
8 L/ e! G. g/ Q) s3 X* Z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 M5 Y6 b3 B+ d, l( K1 l

8 C3 b2 P, j! _0 n) y;;[
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]]
* B9 p0 _) N3 |" e, N& {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]& T5 _3 Y) Q7 N5 x1 J  h
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
' f& J+ @" |+ c/ hneighbor-total* L( x+ {& R. W: e: }  L6 L
;;
记录该turtle的邻居节点的数目( F' \( R/ z) ^- g& l: K* N
trade-time+ P/ a- j& |' D
;;
当前发生交易的turtle的交易时间
* ^2 Z) W1 O' u4 P) x0 F8 a$ V4 f8 \appraise-give
9 d8 T) H- B6 E& P" E, H* R;;
当前发生交易时给出的评价6 y) a) d, A2 {. |
appraise-receive0 _# j2 ^: Z! j* A
;;
当前发生交易时收到的评价
* P; f  L$ u; u% f& Xappraise-time
1 v; _* y+ |; m/ j9 ~3 q;;
当前发生交易时的评价时间
! @& Y" L9 J$ N# f# ?$ T0 Y  S( z; Q/ alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
; c$ T  {- \* ?1 |3 x+ H5 V1 [4 ptrade-times-total
% l" B. |: l! U, ^3 L0 O;;
与当前turtle的交易总次数
& r3 t# ~3 u, B7 mtrade-money-total. I  A6 ?2 |! {, I
;;
与当前turtle的交易总金额+ U( a5 `  s# y7 u" T; l
local-reputation
6 _# J+ l! {4 Aglobal-reputation) }0 h7 {, ~) U. W3 M0 v0 b, o* t1 H
credibility9 a5 v2 R$ X* V
;;
评价可信度,每次交易后都需要更新
7 a1 ~* U( H- K( }! ?credibility-all2 B/ Z" s5 d: N$ @- S  `
;;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# C# }4 t# w& s; d3 X

& c( C! `4 E5 O! n7 a3 n;;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0.51 `' [' v- q9 a  O3 P. h
credibility-one, Z- I, R  k3 a. K3 L6 Q% Q1 [
;;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
; ~+ P1 Q& o- n( c$ M8 rglobal-proportion
8 w1 O, H, E0 s) k- q9 `; vcustomer" {# i) r) i# I+ b2 j
customer-no$ _' g8 I+ S; I! [! E  @! i/ V# X
trust-ok
7 X. O2 g& v) Q) Btrade-record-one-len;;trade-record-one的长度
/ M! N) e* \$ i: E, A- e# m]
  B" r8 X1 \0 Q  w* S
  A, z* ?# X" @; \9 i  E4 t;;setup procedure4 }. @8 v4 Y1 O% x3 h

. K* c, ]! u4 t' g1 Wto setup& v1 u9 K, B# u/ @) c- E

6 a% f! Y: C7 sca

& ]* i4 O5 d6 _% g; G
+ C$ |2 \( v' Qinitialize-settings
2 s/ F" k5 @! \- V& |. w* ]

0 y6 w' W7 z, U5 W; I; Pcrt people [setup-turtles]
; o  X4 f9 ^/ @& [% H

( y' N+ L4 }; V- vreset-timer

- E) r( ?3 ?  ^. Q( W+ V& Z$ \$ L7 \& t* d, l7 {
poll-class
3 j( A1 X% T3 Q' N
+ T& \  r: ~4 L" |# o
setup-plots

1 \4 t0 A+ W7 V& y5 f, _  x& z# K2 K5 w4 I
1 T: P& t" W1 B2 J' m0 c1 Z) Odo-plots
( n1 V$ t, k9 e' }  Z
end* p0 \7 E( F, R5 }( _  A, U7 |+ l
& {! g7 Q! O% ?  G! U
to initialize-settings0 Z. h  v/ y: U

, z) C; x. S4 |" mset global-reputation-list []
; R2 A( s6 |0 e; L
' |6 K1 W( y+ E. {6 y- x
set credibility-list n-values people [0.5]

: F- h% \% E. i# G" x& V. L' ^+ M
+ B6 z* P& ?7 V9 L0 g, g9 aset honest-service 0
  ]% j+ v5 _0 q6 N/ n) o

" }7 d2 m8 ?9 _set unhonest-service 0
9 N$ {* Q5 E. ~. d; J  a
, L# h) E& Z5 m9 Z, V
set oscillation 0
0 t7 W% \- M* ^( s
! g" j/ v( }. g) W
set rand-dynamic 0

- g( ~  i; n( l4 r6 Xend
1 z, C! _2 s. D3 H8 l- j+ g$ C  x) q7 E% \2 L* G6 Q! Z
to setup-turtles 7 l$ m0 P, [9 i3 e
set shape "person"* `5 m" m0 X+ Q' b
setxy random-xcor random-ycor
( p+ D) L9 ?: g. U( Qset trade-record-one []
! E  B6 Z% z5 O/ P: w
' _* h* e. V$ K2 d
set trade-record-all n-values people [(list (? + 1) 0 0)] : \% X5 z& s1 R/ u- ^0 i* ?2 X

$ x) `' Z- `3 s( ?9 q8 @set trade-record-current []4 z( W: u; l; D% y$ b( Z( Q
set credibility-receive []2 m; V+ _- m' e0 B; v7 S
set local-reputation 0.5
2 u& N4 x$ c6 s* _set neighbor-total 0" S" X6 p6 y0 S7 E5 |
set trade-times-total 0
% i: z3 E- w% tset trade-money-total 0
9 X+ n" _( h3 C" e8 I* \2 {2 Dset customer nobody
2 C$ }: q2 d8 y& T* P: P* {/ u4 @; xset credibility-all n-values people [creat-credibility]
* U+ S. Y/ F7 h' W3 _/ T2 g" {set credibility n-values people [-1]
' E- n+ Y, R5 s6 ]/ h) Iget-color
( }3 r( ]1 r5 R) _; T# Y; Y% t

- n3 B, w, M3 {% l' R" vend
" E% q0 A2 r8 ?$ c8 f  w( v+ B* |& _" V- s
to-report creat-credibility+ d+ C* G) P$ F4 X3 s! A
report n-values people [0.5]  x7 I; B. d1 b8 U, R! |! T
end8 V% z' S0 y+ t7 b8 P9 o* l! f$ ^
: \1 S4 Z& a6 y
to setup-plots
* r8 m2 Z$ G7 w1 q9 b: ~0 k6 n- Z+ R/ R5 k8 b
set xmax 30
# `: k( @2 o# [2 `! l

$ p+ `* n0 v4 _* w7 }set ymax 1.0

3 J3 A0 V) T* m
6 j5 Q- q$ |3 |* Y8 hclear-all-plots
0 k1 Z" ]# W$ p( V
/ s2 g% ?9 K2 i) u$ @( M
setup-plot1

7 u1 o2 }; i* e# l; m! M0 I& J
" o9 S! J3 w8 H: O* l4 tsetup-plot2
1 [, e: E3 L9 z% u$ T5 E
+ ]7 B2 Y6 P) [2 c7 ]
setup-plot3

3 Y4 L. W" g/ Zend! n, G: B6 u% P( s" f- Q; W- O
, I, y3 o$ i. p( \
;;run time procedures
/ ]2 Y" Q1 x/ c. K
$ v9 ]+ Y/ `" J: xto go4 A8 }. `+ s( T' Z6 v/ j

$ i! f. G  [: ~0 t. r$ Cask turtles [do-business]
) C. b! D7 g' H+ \! a3 T
end4 @8 I, S! w2 f

( j/ _4 f! ^0 `to do-business
8 T7 ^4 m  v2 l# B6 s5 \' Z

9 H% E" p6 \: s2 J, K* e& c
/ N6 {$ ]( M5 \rt random 360

, Z8 z6 M% u7 X2 y/ j: s1 h" m* x! ^% @, _' ^) f
fd 1
% f1 s: N9 H  C9 A

/ _& f1 P9 E, t: A( p: U0 @ifelse(other turtles-here != nobody)[
7 [% [: _: O$ u2 e5 m! y

0 g* L5 V( W, f0 }set customer one-of other turtles-here
' g: m+ m" ^  p% D$ |
7 r) O- x6 Q3 t7 D& i* U
;; set [customer] of customer myself
) c8 l3 a; ]3 O: w3 k
) u0 z8 i. a9 s9 J9 g; H  f  r
set [trade-record-one] of self item (([who] of customer) - 1)1 k6 n  M7 B6 \8 @1 [' }
[trade-record-all]of self
& S- P2 c" b& E% Y( p) ~;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- r3 w+ l0 O) D' x5 O" W; A1 K1 n2 W* B: G
set [trade-record-one] of customer item (([who] of self) - 1)5 Q1 v3 X4 @5 s
[trade-record-all]of customer

1 X3 r3 R: L- z+ Z: A5 g/ I1 ^9 k- m3 |- S; J
set [trade-record-one-len] of self length [trade-record-one] of self

: X* S+ b: [" |  {0 A3 @3 W9 g
' j5 E* M! S- B5 D! |& r6 m' X) nset trade-record-current( list (timer) (random money-upper-limit))

7 }5 e0 G9 V/ Z4 T7 g, S  [1 u/ N; ~( w) c1 {4 F' x- F
ask self [do-trust]& |8 i1 Y( y. N& T1 x. l6 ^  z
;;
先求ij的信任度
! D, w$ r6 Q9 U5 m. R2 l
9 V8 Y( D$ P& A2 K' Sif ([trust-ok] of self)
8 l' b+ j) p( }6 S% A$ _: ^;;
根据ij的信任度来决定是否与j进行交易[
* m3 N, j& L! z% B, o& M6 ~, iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" T# E4 ], G9 E! P* A
- O9 j' p8 l* e/ T: C[

! h2 H1 @4 e7 W; D- J
0 z9 |/ ?' O# u/ Zdo-trade
( _! l- \+ M+ `1 r

9 V9 O) w: a2 P; I5 bupdate-credibility-ijl

- u& u! a. @. _& E
  @3 V8 C# i* V+ b! {update-credibility-list5 `4 s3 X% V/ |8 I9 V
) _6 _& E- E7 v/ l

/ W8 c! F2 N- t3 M9 Supdate-global-reputation-list

/ d, G+ }& T, V+ u$ G
2 _  v6 [& \- a6 l! Z- P& i$ Ipoll-class

, Q! j# }5 P3 I4 I
3 n% q3 X% U3 T) E; [( p, qget-color
  ]: F- V! q+ d% F( m9 h1 t
- A" M: s0 C! E, ]2 ^
]]8 _& `4 x8 n0 N; s  F" f" t

% n+ G1 `# r- t1 x4 L;;
如果所得的信任度满足条件,则进行交易8 W. ^/ b; {( V6 f
! \: i+ E" n/ k4 W6 K& |" V: z
[
* g0 O6 U1 x; Q* K. `# ^" U

) m  b# e' c" s2 j3 {rt random 360

3 Q. M" t* ]. e( I# ^
! t# Z# X$ J: N+ ofd 1

" ~  r. |2 B' E( m0 Z/ Q3 j  ?, s  p7 U2 o* c
]
* \" O0 {4 ^: f& n) f
) P1 p& R5 b, Q" n9 C
end

3 j2 ]) N/ E. \. Z5 x" E
2 \% w0 |4 p" l( q7 Ato do-trust 7 i- x) O/ L7 o% _0 |& S
set trust-ok False
" {  l9 f  ^5 s5 E, m. K
2 k- d- }5 B+ d

. V: M8 f# Z' i' ]! W' V% h4 nlet max-trade-times 0
9 d+ z8 z+ [' {1 lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; v. @  P) `" s. b8 _9 l
let max-trade-money 0
" C9 u8 \- C' ?6 A$ U; R3 `: ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  w8 D* I8 C- v8 ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ Z  C: a* W9 E: v1 O4 G4 u

. ~# s/ g6 X: S. t& `* [1 l
4 X! j- Q/ {- a4 n& ^$ d" o9 a3 n
get-global-proportion5 H4 i- t  Y8 k* r2 X) m1 l% H- r
let trust-value0 d5 `) a2 |3 T) j2 r, ~
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! X4 Z7 W/ f1 m2 `* d
if(trust-value > trade-trust-value)
) _# s# g& T: `. }  z7 i5 y; W[set trust-ok true]
! {$ O/ `( _- Y" i8 n8 |end+ ]. ]! k3 ^  z0 j4 `# V3 Z
. D* m( S* o/ k8 n
to get-global-proportion
& S' `* U4 z( H8 M8 V' L  E2 gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 B, t2 o) y8 M' _8 T
[set global-proportion 0]
  q5 U% m3 u/ x& t[let i 0
% q6 V: \3 V* Y. ^; jlet sum-money 0
$ i, X& D. c& v" E: ~# h# dwhile[ i < people]) Q( _. e; R7 @8 ]3 w' y
[( h7 Z* t$ @  H  C
if( length (item i
: y8 S7 X' L1 u* W2 z[trade-record-all] of customer) > 3 )

+ ]/ e% v+ }6 i0 r) y1 G[
( {9 x5 u+ s' ^- S8 @# k. e! J$ vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( G7 i* ^7 H8 m5 y/ j, D0 [
]! d9 ~! |* m! q! U7 E& \$ M
]* R  X. E0 B# Z
let j 0& b. G- W# I6 E4 ~3 F) L9 B
let note 0
7 o  G1 x5 E; a0 @( ywhile[ j < people]6 f; s/ z' m2 B3 W' V, j) G. M
[
  y) |- |( ^7 y8 F  Y( p2 Yif( length (item i
! U' W0 ~# \( N. ^9 f, ^, R1 L4 v[trade-record-all] of customer) > 3 )

, w/ A( Q. K0 l: q7 E+ w[# S* C8 H1 A( J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 u. B; k5 n0 u/ x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. i, R2 |1 E$ _; k( Z" J( E" P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" u* r/ w& d9 m7 _
]
+ i0 e5 e. L; W' O) T]0 n: y, v7 Q, R' r7 x/ b" _  n$ |( A5 Q
set global-proportion note
) s2 M! b3 l5 l* B]
- o- E$ [9 X* T1 nend5 Y2 x4 y/ d# \5 E/ g
+ c/ H! B, L5 w! `5 T8 u0 {
to do-trade
9 Q7 Q, A( x* a;;
这个过程实际上是给双方作出评价的过程( O! N( C% n2 T- ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 Z6 d. s+ l, @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 R/ ]- D6 }2 V6 H1 S" l* U( Q
set trade-record-current lput(timer) trade-record-current+ y0 i+ a8 J6 I6 T; T! a
;;
评价时间6 S1 l  f5 l, R  V, P: D; U
ask myself [. l7 _* l3 Z: r3 m7 u* k. C
update-local-reputation7 H8 j/ Q: e6 O' i/ l# b9 a5 N" x
set trade-record-current lput([local-reputation] of myself) trade-record-current
. j1 B$ j* G) _# [( []8 W, }8 T5 Q/ u$ k2 q4 P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 G8 U! r( n( F
;;
将此次交易的记录加入到trade-record-one& c, r2 ]4 u) g6 l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 F# l% h+ |$ Q0 a& Ilet note (item 2 trade-record-current )4 m5 b+ |4 T; g$ C
set trade-record-current' T6 C4 b' X5 O6 a' L* L
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 s4 E9 R, Q* G7 X. I, V* l) ~
set trade-record-current
- \; x, r5 v6 @, [9 O. m(replace-item 3 trade-record-current note)
2 e3 v* J' ?9 V- u0 X5 ?7 d4 y0 D& T$ T8 Y: }

" A4 U: E! d9 mask customer [
7 M* [+ h  `6 K/ y6 c6 [" ~update-local-reputation$ v8 `2 p, k3 |8 A# ~/ Z! E7 Z7 h8 z9 w
set trade-record-current
0 ]$ l- b3 }/ r1 Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& H. G  I/ f" }]
( A! _  Q6 N0 s( T5 j
( |2 t& d" a* U8 u0 V' F, c

) K' v/ ?; v3 oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 o$ Y" U5 `5 M! {0 T
# }0 l, m) b: i) G9 j( v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 ~6 }7 X7 }3 ~' L. `
;;
将此次交易的记录加入到customertrade-record-all
" D8 p- f& }9 zend
  C, O3 U6 O- @' e8 ]& Y6 B' T. L# e# ~  j6 \
to update-local-reputation
3 x  x; J1 c6 L: f5 \2 Iset [trade-record-one-len] of myself length [trade-record-one] of myself  m4 V8 U* c1 E, A3 w9 j$ ]
9 J7 X# p  I3 S* g0 X4 K
/ n5 \. c# E$ ^. S, n
;;if [trade-record-one-len] of myself > 3

' A/ r# v' i* y/ R$ |! lupdate-neighbor-total* d/ Z: X* [) K9 b; e
;;
更新邻居节点的数目,在此进行9 u5 T) R0 F1 c
let i 3
, f6 N4 i; B& S9 Q' P7 b" Vlet sum-time 0; V5 U- S  X* U; M
while[i < [trade-record-one-len] of myself]2 F8 s9 d4 ?. \4 s0 S2 J
[
" J8 q, \( A2 }: x( {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 N! u7 n4 h) n0 i) U/ @set i
  |( ]* s' ?  f( i + 1)

- M; ~& J# r: h& _3 z]: O' g+ E- E2 N6 N8 y
let j 3
: }9 o+ I9 f) Vlet sum-money 02 e% F: T- Z8 k" \3 N7 a0 T
while[j < [trade-record-one-len] of myself]8 _7 `; i/ I9 |( Z+ i
[( e; S/ N0 G8 P0 S) m- l# B
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)
% H5 |+ I' w& p# X, [. zset j- p. [, M; l# W5 l$ `# M$ I7 y1 Y
( j + 1)

! c1 s, S, M; z]
, B" x' N) c% e2 ?9 l3 r9 j% A6 Xlet k 3
' T1 n7 B$ d" t* v' b& Qlet power 07 z+ X& z9 i$ Z4 W2 s
let local 0* x$ t" }' m: v) `( O
while [k <[trade-record-one-len] of myself]" Q9 Z; s6 {- V) N* u- d
[5 v1 p, n: j' X3 V5 m$ 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)
* n, `3 u! G* g; {set k (k + 1)
* r4 S, Y" ~0 r4 S, U]. R1 N& \* _/ _( X! c/ S; n, {
set [local-reputation] of myself (local)
" s6 K. t4 W% ]' send7 w: D" p2 ?8 s; ?

2 w7 x4 x- m- p/ T  Eto update-neighbor-total
8 S  `$ F& z' H. S% ?- h% s3 D6 e( l7 V! m! m( m3 A0 v& S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! V0 n5 s/ u% {- \" u6 }; i1 W9 U4 w! W5 {4 \" E
. o5 |2 Z; X2 Z) U, ~4 U
end/ E4 p  v' [( ]3 b* m1 L
, f3 Z  b6 @$ q4 R
to update-credibility-ijl 9 e3 G( m, l3 r8 k5 A- D9 w2 S# W- V
0 {1 @% [$ v8 y+ a$ B0 J4 h
;;
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。
$ T2 l. ^! Q; ]/ Nlet l 0! s0 A2 Q1 }$ ~  W- A- \3 M
while[ l < people ]
' y3 W  `2 B# {8 f- k, `$ C;;
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' ?4 Q) s0 {) a9 g& R
[
) L: b( h6 q! c% Q$ N0 m, glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% G) J% \: y' U5 u. ^: E
if (trade-record-one-j-l-len > 3)0 \; ^" J, ]% ~! q  E* B2 s
[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: B+ I$ f8 P, o2 X' ~4 Q
let i 3# ~; G- u2 M6 T
let sum-time 0. M0 ?+ B& f" J+ q8 S6 H) o
while[i < trade-record-one-len]8 H: U( v+ [& [1 K6 G$ ^# ?
[
& Y2 |; _* C; I0 @: N2 Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 m' z# g$ }9 F; ~
set i: |  J- K& }: S* E8 P
( i + 1)

  y3 s7 X5 o+ A7 F+ P- W3 f]
, R6 a8 p) U0 ~7 ]& Ylet credibility-i-j-l 00 o+ }( O4 n7 d2 s+ b2 c& ?
;;i
评价(jjl的评价): J) ?. }/ e5 m
let j 3
7 J- y/ j' L" `$ elet k 49 g* S7 n5 Z/ G1 s! |' a9 x! e1 a1 G
while[j < trade-record-one-len]& c4 L/ j$ V5 v% I0 v9 p' R
[) Z0 l. P. D+ U# F- Q
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2 ~2 `7 X* R9 J* P# |/ n
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)
  t/ p6 ~* y! j* i* m- l0 E" [$ a6 tset j
. v7 D  G; l, H9 [& V4 K( j + 1)
( C* x2 g1 L, c) ?4 D( C' W
]4 k3 T. s! a+ n; ~5 n9 x" G- }
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 ))& M9 p& K* C  p
/ ]8 O% e/ G3 h+ M. D: v" R+ G7 S7 y
; I/ H: ]. A+ E- H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 X* C1 N$ n5 R! m
;;
及时更新il的评价质量的评价2 J$ r5 O! L) [" f" `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 Z" q3 x4 Q8 j- ~  Iset l (l + 1)
7 u4 ~- F7 t0 x]+ F$ Z% E% s* i* u' X3 ~0 G* U2 x
end5 {/ x3 @2 U' [' K6 M

7 M" O. l; O2 p: k+ Zto update-credibility-list( {) J2 r4 z% k3 T
let i 0' z" l8 n2 l# Q2 G$ r+ I( N
while[i < people]
; m+ O" [- a# e6 @, P- b1 I$ T& Y[
& m0 `6 c: Q" O) K  Z: d; Hlet j 0
% ^9 L. Q+ @  w$ r, e( t8 |( h, plet note 0
9 N( o' U) R2 z2 E: H6 m7 |9 z9 ~let k 01 x* B* p+ h" l
;;
计作出过评价的邻居节点的数目# _- D6 `( a. u, o% Z) B2 b
while[j < people]
# j3 ^! Q* J# J: _) s[& m2 }  {' B1 n* E. e3 T
if (item j( [credibility] of turtle (i + 1)) != -1)
% |, U9 F5 o# s- ]6 `1 p;;
判断是否给本turtle的评价质量做出过评价的节点, M, ]$ Q9 i; {: t. S, i
[set note (note + item j ([credibility]of turtle (i + 1)))
: q- k, b; [7 F/ ^* n;;*(exp (-(people - 2)))/(people - 2))]
  }9 o" p# j$ T: i, ^1 W  b
set k (k + 1)
- Y3 \2 V4 H6 L) B0 Y]5 e  S7 @; y( G  J. D" ~
set j (j + 1)
. s2 d. |% P4 q; r/ W) O0 F: V]3 l$ e" y4 K1 u; X" G5 w$ n, c
set note (note *(exp (- (1 / k)))/ k), z% z, D* k  f; Z4 D: e! }' w
set credibility-list (replace-item i credibility-list note)7 ~' R6 p; e" N2 y. y$ ~
set i (i + 1)$ P. w+ ^  O# u! I* V
]
% b9 `* @& r: K- d; Jend0 C" z# R1 {. u. `2 C

0 y6 b3 g0 T+ E* P* S" l, rto update-global-reputation-list
3 e7 D# M% L, I* ^- A0 Q9 Elet j 0
' R1 w9 G9 |) v5 \# ]4 i: c* R: Qwhile[j < people]
4 }9 j% O. i$ i0 W[% I* }- j) g4 o' G) s2 z
let new 0
: J6 U/ `4 T/ Y( A/ o, _;;
暂存新的一个全局声誉& {5 l5 Q( \: i2 N+ \
let i 0
6 S: R, |2 b$ l( I& J* Blet sum-money 0* b* M' @% R, P9 H, p0 }8 W
let credibility-money 0  K0 r; W3 k5 r; Z
while [i < people]
+ K  r7 t* [& H! N9 l. s: U' o[
+ {- N* `  `" n1 m$ M2 ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): Z$ I( _1 \( W, J1 P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( Q8 N  U* @% C3 f' D  {set i (i + 1)$ k7 e7 @0 S# R* |; d
]
& \) e( w  ^( q# A: Wlet k 0/ R3 O7 y( O1 ~
let new1 0, A8 {( R0 v. K4 X
while [k < people]
& o4 J, q5 @4 E4 n$ R4 _+ M4 o[: t  e5 y- v7 y
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)) r$ k: {9 J! y2 f
set k (k + 1)- ~! _0 C$ M; i0 r5 j  B" C$ C3 p; e
], h  K+ v) J6 _6 y7 o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 z; w  }$ B- o5 x
set global-reputation-list (replace-item j global-reputation-list new)9 x) U: r3 u+ [! D4 R
set j (j + 1)
, b% a: e; q# S7 Z]' ^+ \& F- L% q% [
end7 _* k* n4 P$ d+ F

, s: g, @2 M- w; B# [& @9 _
- T& b# t2 \* N, R7 S5 h6 T3 _3 H) b9 e. b: Z+ {: p& ^
to get-color
/ m: S* |. }0 o' x" w& t! J4 X. S' B& w7 N7 s; X
set color blue
  ]" ?; k2 h9 y; ]8 E4 k1 D9 X
end
; y8 C* e6 z( x7 @  p- S
' H& j3 k  i4 e1 ?, f( K( ?to poll-class% ~" ~* ^4 a% n: i# j; {% g1 H! j8 a
end
" A7 c7 V5 j7 }7 {6 x: D1 k3 B5 O% ]9 v7 k% d8 t; [$ z; t
to setup-plot1
+ b7 Z. h% P$ q8 U3 {* L
- S( k( y. N/ P0 aset-current-plot "Trends-of-Local-reputation"

/ g% v! m0 `! ]9 W$ I* y% z- T3 z' \1 D  D3 b
set-plot-x-range 0 xmax
" U; \- {5 b) Y, t

5 U( D3 Y  D5 h& k3 gset-plot-y-range 0.0 ymax

/ e( l- G7 Q4 Q9 j! [end
4 a5 M8 u2 M  U6 R
# I8 W0 `& G+ g0 J  L7 }- Q* lto setup-plot2- j& w% P! z, R! K3 f5 k
  l8 O" I  J; B- b: v+ c
set-current-plot "Trends-of-global-reputation"
" A& _( l3 d& z) ~+ j4 E
# m) s  i4 g' o+ T2 d
set-plot-x-range 0 xmax

, n* p: {( W1 l; T3 |4 u2 q
5 @8 Y) t, V  @3 mset-plot-y-range 0.0 ymax
' T3 C, {6 q% y$ u/ l
end6 R6 M2 v) u; _) k+ Q
$ o: _1 j+ y' ]( y2 [7 s
to setup-plot3. j( k: l: y, v# h+ i. m

9 H2 p( w- Z+ a% f1 h4 m8 Mset-current-plot "Trends-of-credibility"
) D$ @9 E; l$ ]1 y
4 J& I+ G  J/ E$ _5 Y- x
set-plot-x-range 0 xmax

8 U9 v/ _7 X/ D. x" C' y( B; d* S! }6 K. b( m1 [7 a4 d
set-plot-y-range 0.0 ymax
  ]0 B& J( K# m
end/ _! T* b5 A3 _

$ v. |# ~+ M5 J; ^1 B7 dto do-plots
7 z$ a. }& R* j" ~5 \set-current-plot "Trends-of-Local-reputation"
8 \! d( m7 A  O# f. ]- |set-current-plot-pen "Honest service"
# q: z/ u- a' e) b0 A" `end
/ V: b+ i; u7 _- B3 ~+ I: H) s: e+ l' {  i7 p( g0 b" U
[ 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.
/ i& ]. }7 u, {' x
0 `+ g) V( _' P  Q2 ?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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