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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:
" G$ ?6 }, T& `+ y7 T" L# lto do-business $ _# b5 d# [6 g" P! _# L
rt random 360
' }, z! y0 X* C1 m3 }4 L- v+ _- | fd 1/ q% I2 s1 ^& F. `" z
ifelse(other turtles-here != nobody)[, b& g; r7 _2 w0 P/ }2 V* V( X+ ?, V
   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.$ U5 |2 u8 e$ z' a5 j! k5 h4 v. n
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 U( V9 @7 E( G: u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; W) z4 Y1 i) T; |9 [, x2 {
   set [trade-record-one-len] of self length [trade-record-one] of self
9 k. K4 U4 e/ l5 m% J- M   set trade-record-current( list (timer) (random money-upper-limit))
5 @! L, y* J+ ?* J
# q" e+ m: l( v' |问题的提示如下:+ B! @/ W/ w- ?$ [, W2 B

% C  l3 L5 J/ X0 V$ `, Kerror while turtle 50 running OF in procedure DO-BUSINESS; D' T# [# k! p2 p5 w& e. E8 z
  called by procedure GO3 v& }$ c5 V5 {  K0 X8 _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) L% U5 E0 A( o; n& y1 y
(halted running of go)
" c& u# H. ^' m  p
' i9 i. l( M: W/ c2 t' g; ~) R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~~
6 d9 K( f) h7 H8 c! U! S/ K5 u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
& t; R* i, h3 qglobals[
; p: X9 g1 f, x* a" k% p8 B3 [xmax, L! a* Q1 n  d; x+ O5 T0 M; x- Y
ymax- V  x! b: n$ L7 ?- N- _, t6 f
global-reputation-list% v4 @% P, P+ G; Y
: w, _& X# {! T4 v4 s
;;
每一个turtle的全局声誉都存在此LIST
4 S. S0 U# O9 Q& O" O* {, ecredibility-list' x; n- V/ J  z/ V+ `; b7 X
;;
每一个turtle的评价可信度
- b+ _+ u# n7 X* w8 shonest-service! B6 N9 z) `+ v4 B8 ^5 O
unhonest-service1 J; U0 R$ ^" C) `$ z) f& P  [; f
oscillation: a+ e: l+ z" D. T* ^9 q% ?
rand-dynamic
* {3 c" d$ U* @, u0 L  F( ~]
4 G% Q4 D  G& ~* _4 g5 u
2 ]/ n* Z) b; bturtles-own[
! ]  t/ u$ D, L' U$ V) {trade-record-all8 O% M% u. R% `+ _+ M" s7 r  a
;;a list of lists,
trade-record-one组成
4 L5 \0 i! p( o; n7 G) Ytrade-record-one! ^: ^+ v2 {* g" M, G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 ~7 n2 h7 \. C' X' J+ \- s3 X# D! Z7 A+ u) \/ N
;;[
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]]: E/ C- ?! \5 D( W
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]  N$ v7 ?- g! C3 f( D
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
- t1 V! N8 V) Zneighbor-total3 f; C0 s; p0 [( Q: ^1 W
;;
记录该turtle的邻居节点的数目2 Z0 ~4 I5 Z7 O5 W. ^! d3 k! U
trade-time  z; V; A) V$ R
;;
当前发生交易的turtle的交易时间
' R6 a8 G3 I% |appraise-give  o% F) O4 p% C- J6 o) n
;;
当前发生交易时给出的评价" ~; j/ m7 ?. C* ^! \
appraise-receive
( X4 s( w/ y6 ~1 s' v4 ?0 M;;
当前发生交易时收到的评价, _/ T" w2 l5 K& |' l
appraise-time
6 v* M, U4 v/ |9 `8 g/ l" f; Q) L;;
当前发生交易时的评价时间/ |5 W. L+ v* i! N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( l7 s; W2 r4 u; jtrade-times-total0 R: B. [( [7 \
;;
与当前turtle的交易总次数
1 e' c% j* S2 ]4 K. P( wtrade-money-total- N9 p, y+ P8 y; _
;;
与当前turtle的交易总金额3 w3 p' F* S/ K. N/ r! f
local-reputation  R6 `: @" F( ^! ?( ^. X; f
global-reputation
' T) U& K* Y) ~9 T+ N% wcredibility( |) f5 y$ N1 V1 w, ?+ E* Y) N
;;
评价可信度,每次交易后都需要更新
2 h' b( e' h# T1 R: g. Ncredibility-all% h( p; ^" C2 u6 R  [
;;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
- ^/ J4 ]" ?4 Q1 G, j
) _& L  G8 J8 |/ }; q;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5) U, {) @4 c2 ^& z: a" P
credibility-one
4 ^# o$ x" V9 N3 t0 D) |/ i;;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) n2 W+ d3 z0 X9 `+ C- [
global-proportion" c" T9 @! ~7 a2 w4 |# l' r3 G; i
customer
  h/ @* r5 x+ w; z1 {: |" mcustomer-no
1 O' Y* m& N8 H8 V7 @) ptrust-ok! I/ X& L  b' t% H8 b( H" p( U
trade-record-one-len;;trade-record-one的长度
( P2 X: d( x) S3 {* I! t1 ?5 b: f]: k% C) F, t9 S* {" @% d
* H5 l! t. }8 G
;;setup procedure/ i: Q* q' T; q, k1 a# N4 e+ q
7 _! r+ X( u$ f9 `
to setup9 ]4 h* L8 p1 i' B' R7 ?, W8 H
1 }& _/ M& E( J* |* a
ca

- {6 O" z5 O/ M. ?9 i
) g; j- l( `* b3 F. C. cinitialize-settings

! J: e/ r: A" d5 P* n% G% S, a" A; f( f% q4 r- |1 B
crt people [setup-turtles]
8 t1 O* {4 e, f! @

# C5 @0 a, @5 c( F8 N; Z- |reset-timer

1 Q* N0 f2 r* c# C! @8 t, |- M! v
5 s& d- N6 ~1 D1 ppoll-class
2 i3 N% T% }. F+ ]; V6 u
! W! ~. v8 K5 k4 P& K, w8 ^
setup-plots

3 t, e. Z/ ~8 A4 A5 B5 O- z* g; `) ^! v$ ?1 ~7 c
do-plots
  c) M1 ]' Q; U- I0 w7 T' m2 |
end
; R: K: j: ~' w
* w3 c9 D! c6 E' v" a& r6 Pto initialize-settings: ^. d- {# S2 {

/ h0 O3 ^# m" Vset global-reputation-list []

, f1 a+ g( h1 o5 q4 k4 _) m0 w: @" _; q) X' c5 l
set credibility-list n-values people [0.5]

1 ~& |0 n7 a$ o4 o4 {( M- o
! X8 D4 a+ P- l$ s- i, B' [set honest-service 0

3 o! v( @7 \9 r9 v2 N3 E$ E4 @" Y  C' x! q0 x* @( f/ P
set unhonest-service 0

. k( w+ q$ H$ O! U2 w0 p
# \7 a* I7 h* |# y1 x# ?" t3 j9 zset oscillation 0

& |! j+ Z+ r, Z' v, M) X8 H  [
6 P* N1 t/ V$ \7 Rset rand-dynamic 0
" e9 B1 y3 G% I; O6 {
end
: I; y7 g, R' ^' H$ C9 Q, O) c' F7 F+ J1 r& \" `, n2 V# b
to setup-turtles
8 a* p1 Z' ~3 C4 X$ _9 bset shape "person"% ?  |# o. l" q) |6 g" ^
setxy random-xcor random-ycor6 b! Z3 _9 c! i& {6 N$ ~
set trade-record-one []
  E# V1 V/ T+ i
, e( }5 y. O" s5 m) O
set trade-record-all n-values people [(list (? + 1) 0 0)] ; E* J2 e" C% s6 k5 T
' M7 G: l4 M' w5 P, a" s  L5 ~% h
set trade-record-current []
% `9 o2 ^6 c" b! E  v9 Aset credibility-receive []
& D9 [$ K3 j- _1 z9 h9 hset local-reputation 0.5. A) i  P! R* D( o! N- L+ V
set neighbor-total 04 h8 ]6 T- x6 y- B
set trade-times-total 0
8 a- ~7 E& a! \) f* K8 wset trade-money-total 0' F! ?. a7 q' u  a9 [2 ?& [
set customer nobody
* a" x( r$ i5 K6 K  Xset credibility-all n-values people [creat-credibility]2 X9 d6 |! _  {" H  {  {
set credibility n-values people [-1]
, v! Q+ w+ c, x$ H" x- vget-color
, B* m. f& Q! M3 h" y! g
; S6 s& N8 Q8 }
end$ a7 H1 t; s  Q6 I! n) K
0 h! |. G9 `9 V+ e; T
to-report creat-credibility5 z, z  D. ]. y' F- `
report n-values people [0.5]# g- w; U) l/ O0 O* W
end/ P* w* P7 Q" U) s2 P! J

. C3 w7 B( |. y! z" D2 k- ^+ @to setup-plots4 z! u( {# x* z8 \

& f8 ]- u7 H4 ~$ z; Dset xmax 30

( i* Q2 j' U% |. d* I/ z3 E9 K: C, j8 B( Q0 ?4 _3 k
set ymax 1.0

6 i8 D' G+ ?2 ~- N8 L4 v3 n( k" \. g) N" P- {
clear-all-plots
: L3 |/ o7 S( j& B7 I

0 T4 M) G( S% c( n- L7 t# u3 f7 Osetup-plot1

" w" H  ^( Z9 E2 @5 ~! k8 m7 [+ d  T# n: V  k% {$ x8 a- ~+ y- Y0 I3 x
setup-plot2

0 A+ P- y  V5 e
, r7 k; J0 A/ hsetup-plot3
( ]' p% [$ j/ _0 ]
end, {( [9 Z' T: M7 ~/ e
( z+ `# `4 [/ W, s) l
;;run time procedures
% G: \! h1 M' m  y1 N" ?) r9 N
) r: D7 ~% X$ fto go
% p& S8 b+ `# n& W4 N" [  X& O9 K, f! `6 ?  d7 n
ask turtles [do-business]
+ e9 [8 G, w! i
end5 c/ Z  \9 x. y5 W
! X) Y: D, A$ r5 ~8 O7 x: ~6 Y
to do-business
) W) @% f& q# B' B9 C7 A
" M9 F( S! M& V4 V5 e  |

5 u: j4 s. d3 Y. ]0 M) `0 z# H( art random 360

1 K( ]3 r: \' S6 b3 d3 _# {1 m% o% O
fd 1

3 U# F7 V! D2 z6 h
. p6 M2 a0 U9 K* I# H/ S- yifelse(other turtles-here != nobody)[
' M' ^$ Q, y4 M" k7 _8 k* f' V+ S

4 P. Z2 {0 z1 b  M, \+ D  D- G/ cset customer one-of other turtles-here
3 w8 M: }7 u) \: l! s) [
$ Q% A6 l/ W2 g, M
;; set [customer] of customer myself

$ P% u; V7 `$ _; t2 Q, p, e4 R. O( M  @5 H4 Q( P0 I
set [trade-record-one] of self item (([who] of customer) - 1)
; L) H, t; z0 u3 z8 @! m+ q" X[trade-record-all]of self
& ~( f! J6 Q6 N' k4 [# ?;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' H2 g$ V& o0 Z8 X( k* I

& a' a7 a3 s9 B2 z0 y0 b2 {/ jset [trade-record-one] of customer item (([who] of self) - 1); P( Y1 j& L( F/ H7 |' \
[trade-record-all]of customer
, s. @  {4 m& \# z

/ e8 [( C5 W; h; m: }; Dset [trade-record-one-len] of self length [trade-record-one] of self
4 `/ N; I9 u* ]! w/ ~$ H8 i

. A+ P* g! {$ }2 G; `set trade-record-current( list (timer) (random money-upper-limit))

: i, O* O0 S/ @$ m3 M3 \+ z; {9 [0 ]
ask self [do-trust]7 t: G4 P* K  a: A0 S* [0 F! e3 v
;;
先求ij的信任度
0 |! a" F7 m: n- k9 I$ V: _% L; x$ o9 W6 _$ u
if ([trust-ok] of self)6 s/ b( x: E2 o7 ?- x
;;
根据ij的信任度来决定是否与j进行交易[
3 }. b1 [0 ?1 f# task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ U; I5 s( {2 c8 ]; K( T

& ]% I) a4 n" r0 _+ Y- h2 H0 c* {[

$ l2 Y& b8 ]( ~) V' B
5 I* ]: H; @$ Q9 ?" zdo-trade

) L/ Y( x4 w3 H0 Z6 Q
. ?& `! {- s% m  P& H+ Pupdate-credibility-ijl

; k* i5 j! ~! _+ N
$ V2 A- |* p1 [. U9 Aupdate-credibility-list9 h8 \8 ]7 X: |3 w% K4 y

1 t, R; G2 J0 h2 K1 |
  A2 a/ ~* t- E( V+ o* R/ C; xupdate-global-reputation-list
2 n3 T4 }3 y3 R5 t3 Y# `2 Z' u1 I

( Q/ x; ~! B1 ]/ e* m9 \- y8 F% zpoll-class

* @: R0 Y5 T. D, Q* |2 `' v+ |+ z$ I& T0 X
get-color
2 r! q. E. _/ [# r5 D, W
9 L. ~7 F  d( @, Q. {/ m
]]
( t6 `. j* o- i3 q. K! M" T' A8 _8 E5 B9 ^: T) j. Y$ o
;;
如果所得的信任度满足条件,则进行交易
/ l, J' e' B! ]% k3 U1 m2 \; k0 B6 U0 T5 e: c% B
[

/ [: k/ \0 E4 t8 }( c4 i9 |, y. P: e& S" c  _
rt random 360
, }2 K6 s' l+ m3 U- X0 C; f

+ e- w8 R) F+ c6 q8 P5 Bfd 1

: H, S9 {9 ?  J1 _: W7 ^) S8 v1 t" h5 o: G- M. L# w
]
# H: Q1 {- ~/ O* i! G2 ?, M' G
0 Z% z8 |: T! t8 k7 i& o# f" P
end
0 c  \* ?: m0 c5 h, `5 p

4 O7 }0 N- k2 A7 Q2 [9 l. e( ]  P1 X1 T- Cto do-trust , W5 w' d$ R% I' r" }6 M: d3 B6 j
set trust-ok False
0 o, T& ~' _: y+ U3 b* ^# J, }! o5 G& S' Z
9 Z3 r- W& n: R* _
let max-trade-times 0
$ f. S1 ~+ F* Q9 r" ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 s4 G0 x! E0 t6 `, I- ]let max-trade-money 02 l+ g( N  Z: x+ o) m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- Q; B' e$ a6 u  h' H9 R3 R3 }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). x2 j1 ^4 ^! {% B

2 B; b0 R' {# a7 }  ?" G) f

6 T1 \, R/ V4 ?& ?; ~get-global-proportion
4 F- |% i8 P% S7 W0 G1 |7 e8 ~let trust-value+ S+ P9 @- a5 l/ @& F  T
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)

9 w/ {$ Z; \& _+ {; ~% a/ b! cif(trust-value > trade-trust-value)  x. }0 B7 `/ @3 o2 v8 [! Q
[set trust-ok true]7 V# L& S& X9 \; |' Q8 W4 M' x5 e
end- ^* i) d; B( T+ ^* [
( @- ^7 O- k8 E  h& ?3 C
to get-global-proportion* ], F$ j; z" V# u. @/ p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% x/ |) K3 e* D, _
[set global-proportion 0]
8 ?# F. f5 r; h3 G[let i 0
* _6 ]4 c: J* Z8 S$ n1 Z5 elet sum-money 0
. x) j/ F& j/ n6 ?while[ i < people]
0 n/ T8 x% D  |[
# T3 b2 J+ Z& N' iif( length (item i
1 U; o! u9 E9 O[trade-record-all] of customer) > 3 )

+ [2 k' l) \- M# u8 `[+ g3 B; m1 `1 U% O% v' G2 i- a
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' O( n; J1 }1 o4 |! A]1 V: _! @1 ]2 Z
]
/ G2 ]$ l# w$ I1 y8 \- q1 wlet j 0
0 i7 M, e7 }! ~8 o' T& |$ jlet note 0! i1 H  q+ s0 u; ?; B
while[ j < people]
" T2 \* j) n6 @# _8 x. e: B$ N- v[. {; v7 |; G# V% V& T- Y$ U
if( length (item i
* \3 i! s! J2 R- V9 H& l[trade-record-all] of customer) > 3 )

- }- R# Z& ?1 J( a[
! C1 R' }- j; p# ~& ], r1 o4 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- w% d/ F- G% s! r- I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& X# `3 @( v% Y& U, ?0 N3 u. G
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) j+ w% C* H8 I' _]0 b( k; w& {$ y/ A5 M
]" `, J, ~, V2 y, U
set global-proportion note) M# d$ E: c. x, d) }* T. d8 r
]
, S  b- g2 h* u! K3 N, ?end
# z$ h2 V: @2 L! _1 V) \1 G+ u: w# {. V; A7 {! r& e; }
to do-trade
1 ]( `4 I# W0 j8 e;;
这个过程实际上是给双方作出评价的过程# b' ~8 a( x( e$ U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 t& [% P. [3 d, _" B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, y, P2 W8 m- P! u
set trade-record-current lput(timer) trade-record-current
* M- _: {. x- f( c# v$ k! D;;
评价时间* p% y4 G$ Q) ^: i. O
ask myself [5 a* _7 r* D% N# p, U/ _
update-local-reputation) c! X- l" N, D( C! w1 l  R) Y0 i
set trade-record-current lput([local-reputation] of myself) trade-record-current* k0 ^% o1 n7 j) y
]- G1 L% O( U) `1 t
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 k0 \' @6 j2 a; g+ L8 X
;;
将此次交易的记录加入到trade-record-one" G( m' y+ W$ x4 y, a, `, {2 p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 u' n2 i& k7 O2 Zlet note (item 2 trade-record-current )& x- I- o/ s7 @( D" i
set trade-record-current: C7 v5 \. L2 w4 a2 a
(replace-item 2 trade-record-current (item 3 trade-record-current))
% i: A4 W' N% i! |+ U
set trade-record-current" m: j) L+ Z4 ~  B9 q: ^. N
(replace-item 3 trade-record-current note)
8 e$ F% y9 V* G; E4 Y" D9 d$ y
2 c( E; H$ m8 M

- T3 Q6 Y% Q0 T$ C  [8 u. ~6 sask customer [$ |, A2 c0 h% W
update-local-reputation* k$ q) o% ^0 E& l: ^5 @
set trade-record-current# K, @' n, N; A4 i3 `9 i  S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 s1 x" ?7 `2 Z0 f, V]0 h1 z) p1 r1 j5 m3 ^0 D5 ]0 M
8 L: H" U  z( O4 h: O+ Y

! {" k) h6 Y& W4 m  pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 n/ q' y$ w1 F7 b- M

0 u5 P; s  S/ q! L9 [! ^! d7 Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 |& z- I. g! D/ y' r
;;
将此次交易的记录加入到customertrade-record-all
' _: E+ e: K) L- Q: I: Iend; P$ u* {' R. t! _# r7 Q8 |

1 F+ U' @8 X+ ~/ j0 T% k: d$ ]% Qto update-local-reputation
; v: w# ]0 k# ?5 k, Oset [trade-record-one-len] of myself length [trade-record-one] of myself
3 E' {5 e0 L0 W9 B5 J0 B2 T+ P$ j: {& m2 H( h' g7 h
- k8 t6 ~4 @+ @, r/ v/ g, d
;;if [trade-record-one-len] of myself > 3

) N5 o' M6 J. F$ q1 u$ n2 _9 nupdate-neighbor-total
5 K5 \: p+ t1 v;;
更新邻居节点的数目,在此进行
' s3 ?- p) Z6 ~let i 3
. [8 ?* z2 l* Z# z% y6 }7 V1 llet sum-time 0
  ^  v$ ~) q" P7 |: C6 _+ F  a2 Z+ Vwhile[i < [trade-record-one-len] of myself]( G3 r1 l% i, f; M7 k
[+ w+ j1 q1 B( E8 J( _' U; o/ U- [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 i9 b. _2 `3 O9 H$ ]set i
: p; M( v# n2 W8 h) I  d( i + 1)
: @: q$ O9 f+ t0 K6 F
]
$ |4 x' A5 }" b1 C) D1 [let j 32 V. d$ x1 ]4 ?7 ]3 F8 n
let sum-money 0
8 @2 @$ V/ F6 \6 ^9 F2 P# Jwhile[j < [trade-record-one-len] of myself]
3 s" q, a# e# a& o5 u  e- \% i[
2 \5 h5 W9 U) ~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)
* g  q9 ?! w' g6 X: Y+ z- Aset j7 W* n) A- e! `, m( u% s
( j + 1)

7 A5 A7 \$ n; s7 E]
9 |. I, s: G. s1 tlet k 3
- d4 i0 }- X) U& T0 n: G/ Ulet power 0$ x, y% G1 Y1 j! X. A: A9 n
let local 0
! H8 B0 s6 c/ L8 [& [. q! qwhile [k <[trade-record-one-len] of myself]1 X) i3 n  X" S, y) {, l. G
[" _  A4 ?% _6 M8 t3 `  A; w3 L
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)
$ ^  q1 M- m  V$ K' r' }set k (k + 1)
' ^4 R; L  l- S0 ]  ~8 []
* ]; D% M% L6 Uset [local-reputation] of myself (local)% r2 r* G# c' x$ a
end
0 r4 W# @7 N; e+ |- s# _' @6 k3 I* M7 o; L5 R  f1 l
to update-neighbor-total
- {5 j+ X$ R0 g: k2 F0 y! q! k' W# m- a3 I% ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! G1 L5 U8 E' `7 ~3 z" g
# T1 g& [) |; K1 c- z- t/ b
. v; O% n4 P) Y6 |
end
0 `/ P, {/ k+ _1 F1 h4 v9 v- Z. ~/ l' I
to update-credibility-ijl
5 h3 C+ y* w0 w$ m0 l' Q
7 r6 T) s* Q# q, }8 y9 _;;
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 A$ f+ y& x6 Wlet l 0
0 g7 J7 l  G1 o# w3 D5 Gwhile[ l < people ]$ i; }; g1 c4 z$ K- K( 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
' W2 }; M7 U& f$ q: c[
% u) `0 V2 i$ t  W# N6 ~* {8 _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# Z2 R  M5 }) s- l- G' P( g8 I' ~
if (trade-record-one-j-l-len > 3)
* [1 }/ k* m) A9 S7 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+ H$ d- Q+ k- A3 \% k
let i 3$ n2 P5 n! Y' L. n  X, r/ K
let sum-time 0! W" a, A) W% }6 P
while[i < trade-record-one-len]
, E% a9 D1 @# v% A: M! _, r0 d6 c[% @0 K4 y  b; X) v6 s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 e; n: r7 D$ V/ Tset i4 E2 N- z# _0 h
( i + 1)

7 u3 J6 D9 |/ D]: [& d7 ~2 p8 \2 S4 X- G
let credibility-i-j-l 0- B: }: V9 t( w) b& q1 J5 @
;;i
评价(jjl的评价)
9 T0 t' @- M  L# f7 Clet j 3
* H' {; R% O% R: \7 i% D! Klet k 47 X$ ^$ A- h, z7 Y( x& a" ^
while[j < trade-record-one-len]
- K$ n  Y3 D. Y- a* d[( {, B2 u& q. K. x. 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
" j6 C8 Q- r5 K2 `+ Xset 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)
' N- e4 ]3 R0 t- v# j" m& Dset j! h8 i& a4 }5 t" ^. i# D
( j + 1)

' O' k: T  ?4 \5 @]
9 c/ g' ]/ u7 f0 ?2 gset [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 ))
. Y+ u/ T! Y5 O/ w6 S% z0 X
7 z4 E& y" ^6 A% t; |
8 j! b1 @5 B5 P% A5 a# O% Q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 P* _7 q) U  S6 K# e" b' G;;
及时更新il的评价质量的评价/ {' I$ Y3 c. n% n7 Z7 J/ I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; D! _6 s* P6 u9 A) X+ R" \2 K
set l (l + 1)
3 }; K9 X( g) S% R( ^" F) B]
) j$ L9 H* o7 Q0 A# H) w; `end' {/ B1 G7 Q, K0 p+ i
8 s0 Y7 ~& d6 m* e9 D* n) ]
to update-credibility-list% B: @! {  S1 L- X2 _* s
let i 0
. B/ \; Z; Z* Swhile[i < people]
9 d4 [& Y5 ~) ?4 Z4 Z& }5 E' ?6 p[& x6 N% [! T  J3 C2 U
let j 0
% h" Z8 s$ q: Tlet note 0$ P, E8 C  r. \; f. g% x8 R3 x* C) v
let k 0
; b7 p6 B+ ^' O5 `5 p+ T: F;;
计作出过评价的邻居节点的数目
$ _: |% F3 `* }4 swhile[j < people]# O7 _) k0 W% G3 R. C9 I7 F. Q
[
  M/ k6 i$ j0 j) eif (item j( [credibility] of turtle (i + 1)) != -1). G. W& z3 Q; s+ D
;;
判断是否给本turtle的评价质量做出过评价的节点: S$ Q' t7 J2 U
[set note (note + item j ([credibility]of turtle (i + 1)))
8 k1 P% T9 Q  ^/ ^- x;;*(exp (-(people - 2)))/(people - 2))]
' o! J+ S! x( D& x% q( E
set k (k + 1)
- c  _: M! A1 H3 M6 u]
  t2 G. `. t: \; x- Fset j (j + 1)* M( W+ }5 t% ?9 E: ^; z
]
9 ^  a7 b' e$ A: Nset note (note *(exp (- (1 / k)))/ k); x) V$ i+ J' W
set credibility-list (replace-item i credibility-list note)3 |7 x) A+ j& H" h0 ^2 B5 v* P" ?
set i (i + 1)
3 `$ p. a4 @% T4 l4 ?  p: @7 ]]. j) N- j6 j: U3 h) G- F9 J
end
) L) @. {! n$ m1 I, p  W; l3 A$ `. B" ^7 j" X
to update-global-reputation-list
3 O( W+ }4 r* d, i. _( C* [1 `let j 0$ @" K- ^: t2 B7 m3 \3 j# E% ?
while[j < people]
% k$ \7 ~% ]5 c- ^; z[7 U9 L- x' s* V0 M& N: C( z
let new 0& K1 e7 W4 a# ]
;;
暂存新的一个全局声誉9 J* A; L0 b  J; o* O" O8 S
let i 03 p; G4 C+ Y. ~/ i) F8 A
let sum-money 0# }8 ^5 g+ J* W" k$ ~6 ?
let credibility-money 0
1 |; Z" Q9 A, F9 a5 ?4 A/ m- jwhile [i < people]3 n! v1 @; A" U
[
, _. R9 R, |( _) M  q7 M& ?2 [set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) O$ w: t% J% F) Dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 Q7 @7 b. k) L; M
set i (i + 1)9 [4 m& |8 R% A' M0 f# O; l5 m
]6 M' W. S# E* E1 v, n( P
let k 06 ~* h1 e) D+ Q9 q6 b
let new1 0
# w1 o0 }- P# b9 A1 jwhile [k < people]
9 T8 f" T; @3 [5 c[- I* j! i' P2 r
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)6 H7 ]7 n& g0 O1 r4 k
set k (k + 1)( \. ]6 F4 i, I4 R' y; m
]
( m: x3 M8 D" }( _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ s4 L3 n: a* mset global-reputation-list (replace-item j global-reputation-list new)& N# `+ F6 W1 n9 v9 R
set j (j + 1)
4 Q# `2 I# ?2 s  j# |]
9 V" n. p: @; u, O9 l. Wend1 K3 d" H* s7 q& R

$ a1 p, J% s6 Q, Z7 v& N% _7 C3 v) k' \- Q7 u9 e
$ I3 O- D8 s/ m, B* |: H
to get-color2 w3 F( S( ^& V. Y

8 T% Z+ B; i0 F& C4 q3 P/ qset color blue
8 ^/ G1 h% K. x8 F
end* R) V. Q1 A' ?$ f1 y$ _6 n: x

! Y) d5 i* F$ V  E- t0 mto poll-class5 P. Q: f# S! G3 L
end+ D/ b, m' J5 B& I' o  j& j6 ]

$ G# M0 ^8 h4 fto setup-plot1
4 s) A. T# o, E& d, y* V! K0 J$ r& B5 K3 e; J* K7 ~3 ]$ O. f
set-current-plot "Trends-of-Local-reputation"
( A( ?8 u% @+ ?; W- R" R6 p9 G
* i  R  Q5 o- m  d8 I
set-plot-x-range 0 xmax

/ k. N! u! }* ]8 _: ~6 W; N; v7 k6 L2 S( g8 X' q1 }2 l: G
set-plot-y-range 0.0 ymax

9 r1 w0 k" I* t( R$ L9 W* Jend; Q. [: O3 V, I
8 g5 [* ?, T" e9 |1 f% F0 |9 e& z
to setup-plot2; J$ _% w7 p2 x0 z0 d+ x
+ y7 ?! d/ v3 j& m. ?* S
set-current-plot "Trends-of-global-reputation"

; R$ T) k+ R4 R  N) t, i# C9 V% P, m$ r( N
set-plot-x-range 0 xmax
6 V6 L* G8 {' L& G; }8 a
( a  K+ }6 K; q. `6 m
set-plot-y-range 0.0 ymax

" k/ i3 e; D% p$ \/ ~end. m8 W) K" e1 M
3 ]' U& x% j7 `) q0 J" w: a# a
to setup-plot3
1 Y; ?% a2 w/ U/ t+ I
: X5 {7 S% f1 I  L6 F. cset-current-plot "Trends-of-credibility"

0 T3 `1 }( ^1 d' F# m8 y6 _; m4 d$ Q: }! k; o; U& B
set-plot-x-range 0 xmax
) g# j) n& S# Y) s" I

7 m( z1 ]0 b. Z# `% C3 Pset-plot-y-range 0.0 ymax

0 U. M7 U( D  d3 d; _* bend1 @! v6 R; z- ^" s) i

; D7 \: A' V* h& Yto do-plots
4 d. n: h6 d1 Z( a3 _7 b4 Lset-current-plot "Trends-of-Local-reputation": h; [% E: e% C3 j
set-current-plot-pen "Honest service"
. B: j  ~. U% w" ]2 R" wend6 p$ ?: @) l$ D9 \5 P1 ~0 o$ m# J
; z. M6 @0 Z  M) `8 M0 D
[ 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.& z* S3 s) X$ V& v+ |/ r

3 ~* r  C0 W8 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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