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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: B6 Y# u7 Q  S1 X8 U8 ]to do-business 5 Z% ]) E+ ^9 T: I) }0 f
rt random 360
5 `# J5 }# h' s0 t$ `: B0 w" F* z fd 1# }" o3 h8 U/ X) v4 S; R) k
ifelse(other turtles-here != nobody)[
. L# b, N, @$ m7 _0 y$ q& E   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.
! g( I/ z0 }  z) Z8 o8 H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ b' I1 ]9 E2 w; g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 d6 q$ l( x# y' z" K
   set [trade-record-one-len] of self length [trade-record-one] of self
" U2 C8 V8 X) c% Q: g! t   set trade-record-current( list (timer) (random money-upper-limit))
$ J1 P. D5 ~2 O9 C: @# O! Y: ]: r# [: O2 X0 ?7 I5 J
问题的提示如下:
5 m2 O% j. Y0 d$ \% X* T! l6 u7 s. B9 i2 M+ T+ D! ~8 S" J" k
error while turtle 50 running OF in procedure DO-BUSINESS
% }) Q* n& \# F& T  called by procedure GO( R6 \4 Q" j( h/ x3 L$ Q0 b" \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; ^+ V: C8 o  J/ g+ q
(halted running of go)
5 o  T1 @; K  O$ X7 l/ j2 ?# _7 _2 W/ r" {- d
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~~
0 f, _5 l0 C2 S% s' I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: V, ]" J5 q$ c. o4 `2 o* A
globals[* x$ f7 l- j/ [- F5 A, ^; x
xmax
0 M; i2 c2 U" Q. S5 D" L1 Uymax1 h& V! Z8 y0 b* F: N" Z
global-reputation-list3 c9 Y4 i. j# |+ {- S2 B

1 z' M: O' {1 ~9 z; M: \# b;;
每一个turtle的全局声誉都存在此LIST
1 j% _1 E6 u; {: scredibility-list
: D. c5 s' Q& {6 N2 I5 t# a;;
每一个turtle的评价可信度+ p! L+ z7 ?3 J0 Z3 I9 ^% S
honest-service8 U( }1 b  s& z+ J
unhonest-service
. I8 b" S- P0 R) X# G1 B7 Hoscillation
* t# D- h- ]3 l1 R+ [rand-dynamic
+ d  W/ ^1 Z6 V8 v9 L+ u; y]
7 r$ i) ~( p: U; w2 T% `& ?4 i/ Y$ `1 F4 w3 R
turtles-own[! L4 m6 F" {) D) ]/ ~! ]
trade-record-all% x7 O9 A( x; A# i0 n2 L
;;a list of lists,
trade-record-one组成
; i; _+ F( ~- r+ [trade-record-one
1 N: i  r/ 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8 e" v8 i# Q8 f9 V& n: l

* y0 ^% J! e5 [% 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]]
, g" W8 `  {" L1 N  i9 P3 [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]4 h' H7 |( g2 J0 h# G( ]: S) \/ V
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
% l# b: L1 F) h. e) Kneighbor-total: Z# g: C2 s- M+ i: a
;;
记录该turtle的邻居节点的数目' o. S1 n! H/ ?( n
trade-time/ k; {" @1 g1 j0 y
;;
当前发生交易的turtle的交易时间
( Q0 e* Z7 v: }( `; p; c6 qappraise-give9 M, J! |. W7 W) g& d, w2 b
;;
当前发生交易时给出的评价9 W- _$ w6 c* ]' c6 N" |0 z
appraise-receive
1 _8 ^/ K9 x) l3 c5 N' Q;;
当前发生交易时收到的评价# K6 w8 \3 `- x5 R7 |7 }
appraise-time
# S9 T+ l" ~+ }; [7 |8 I;;
当前发生交易时的评价时间, e( b' H; x5 L: h. u% c6 J- \  c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ e+ p# ^6 E% H& r6 z$ E  [9 Dtrade-times-total
  h8 }# r& N. |- K/ [3 D;;
与当前turtle的交易总次数
! F  @! ^* r- `. Q  M- Ctrade-money-total, S9 o# d0 b8 s( H$ y5 w, [
;;
与当前turtle的交易总金额
* Q4 t7 n# |, J- L5 J, `local-reputation5 M( Z6 L$ q+ g
global-reputation8 j' K( m2 f+ @
credibility
$ T& F: G  R1 [) O! L9 M;;
评价可信度,每次交易后都需要更新# h; R* j) M, ]: `6 a
credibility-all
) j5 O+ g2 j& K% C+ F  N, t# 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" I4 R2 s3 R( e9 j5 L1 n; p

0 d, `; i" H& k& J+ O;;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
( v) f+ l3 a  e+ [- vcredibility-one
2 W, I1 d0 H- @. [1 I8 |;;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
7 h1 `" F. i6 [: e: ]global-proportion: Y# ], Z9 x& n4 l# q
customer
, _3 X: B) ?$ t& Y. Rcustomer-no2 T6 m- Z. L7 x3 {" C& L
trust-ok
0 b1 b3 L7 O4 K- [. G7 ttrade-record-one-len;;trade-record-one的长度- e+ ]1 z1 J1 W* O8 w% @
]
" x) A/ Z8 X# k9 g' N! d2 a) U! x4 v# {" }4 C* t
;;setup procedure
# ~8 G% J3 d+ S/ D
* y& d% R$ _, sto setup' `! @5 d! I' ?8 f
0 y- o. o; I" w
ca
- E/ S" l7 C* |9 {4 ]) c
8 n: E: I- d) }; A3 L
initialize-settings
& {/ b) P% k/ f, r1 N

1 d& Z& k7 |' u% T! d' ccrt people [setup-turtles]
; W/ c2 |5 W) ]. N. x

6 w# m* m" P2 Y2 P0 E6 S: x3 ereset-timer
# n, n8 |: T: r8 h- @
6 B! s0 k/ a, ~$ k3 w* R3 e2 I
poll-class
% ~4 X2 e1 x' C/ T- }

# S3 i/ C5 i* V& k2 P9 ?setup-plots

) v; ]- ]1 W' q' ^
7 H) O- n5 l0 ~# u. u+ H! t* vdo-plots

, X1 k0 k7 D/ C5 M' w' }! ~9 aend
5 m5 G% F( k" r' y' }3 _; J! @" o+ l; Z# H7 z
to initialize-settings
$ M: |+ W" l5 z! [& z% x+ p* J* G1 A% H7 {* f% J; U2 ]
set global-reputation-list []
5 T0 z/ W/ f9 s: D

8 e. G* z2 U, {# z/ Vset credibility-list n-values people [0.5]
8 v/ X# l5 c* z: a/ L: q
2 S/ V8 Y9 n. |* o! n' B3 m: o
set honest-service 0

8 m' o: q' o' L) D  J) }! I7 n6 C& t3 e# n' w
set unhonest-service 0
/ y+ n5 ?* e$ O5 {( U  U

$ c. b$ T# u* Fset oscillation 0

. a( d7 n+ w/ T% {, t( J8 D
4 q3 r8 D% j) B. o4 b- n# kset rand-dynamic 0
8 w' B' k/ m& t2 y% A+ c' Z! S
end
2 q8 g* b& ^) Y  `" u% f5 F- C, w- z% Z( g; ~
to setup-turtles
" Z; i; X$ U: D; G1 }+ O: }set shape "person"
9 e% k7 R, ?1 }9 ?# w/ ysetxy random-xcor random-ycor
/ Z- _6 M% g; x5 u- l" M% V* h- Aset trade-record-one []
! I0 ]5 Y# }3 G
0 h1 i5 H& o% D1 \
set trade-record-all n-values people [(list (? + 1) 0 0)]   `0 X, e7 f3 `/ ~

1 A1 k$ V1 o" K; Q  A2 d3 J* `set trade-record-current []. J7 f1 b8 {7 j) j
set credibility-receive []9 B2 p" ?4 f- E# [  T
set local-reputation 0.56 C( E. K9 z& k$ g3 ]7 F
set neighbor-total 03 n8 C* X- P7 f8 p# Q( {# H8 |
set trade-times-total 0
) v* m2 D9 C6 j( M1 S% |/ \% Fset trade-money-total 0
$ y( [2 i  f. @set customer nobody- Q5 S  Y1 n, y
set credibility-all n-values people [creat-credibility]
2 V! F/ |4 ]. v) i( t8 F' f7 d2 zset credibility n-values people [-1]
8 m" l: Y4 a5 e1 d9 A/ uget-color0 Y2 a% H% g- }0 x; K9 o9 f
7 ?1 X% k$ I$ s) ~+ y
end
1 R8 a% q' W, b/ d6 m" O* T$ k2 X* \1 {" W  {+ {: s( F
to-report creat-credibility) M& [* g: E0 G! v  M
report n-values people [0.5]5 ~& u3 v% t/ P0 _) x  u9 R2 K- Z
end) s0 L8 l# Z1 _/ u( ]( ~$ `
$ k6 ~2 t& c- c9 p4 w0 _
to setup-plots
" b/ h/ B6 _5 J6 F- P5 D; B' p) R) `
set xmax 30

9 }4 D8 U' x0 d5 O- v) N3 y: X; ~7 n" c. i
set ymax 1.0
- u& u) Q8 w& u7 Y8 a9 q5 ]1 \
6 W0 @; ^/ ]# q, x2 Q
clear-all-plots
4 I' n+ W4 I. V- t

  i9 N  p, M2 n' [setup-plot1

7 I0 h- M7 R1 L; R0 q/ q3 h% ]" @: a. V% a$ g
setup-plot2
% U+ a/ p! G% x! W  o, X& e
+ a6 B% U) f* E5 J' E1 E
setup-plot3
! \1 M+ P2 T6 `  d5 ]
end  e/ h# A: s2 x
) E: {$ g! {! t/ e9 z5 h7 F' Y
;;run time procedures
, f) `# m8 U, h' {( T: A( }
$ f. H/ E7 \+ B7 M1 Y! Q1 \to go" U8 \! Q! z/ i! k. n5 u( t
3 k( g3 `2 s9 c. n
ask turtles [do-business]

$ G# d$ P- ?$ `, V/ Uend
' g' u* w+ s. R$ P' b) ~4 Y( {9 g  ?& A1 u; A5 |
to do-business + H7 n5 m& @7 B, k. H& F
7 T( y4 B4 W  y" \. d0 B

  ]! n0 M7 d0 R3 Z7 f; f6 b* L7 F2 vrt random 360

5 \+ G6 w3 F! }7 J
+ \8 Z* Z. S. p5 E# X) Efd 1
" L$ Q( ^8 v; H# B9 F2 X% P
: y( |8 h: V) Q" x8 A5 {0 X% g
ifelse(other turtles-here != nobody)[

  v. n" w5 {0 ]$ h' m9 N; B/ m
, K  t8 Y3 R. E( sset customer one-of other turtles-here

& e# `$ L# E( B8 I. R1 z3 \
3 D0 k& M2 e# ^0 W( a3 F;; set [customer] of customer myself
% s* I  p) j; d/ k& i* ], F

7 ?8 @/ B, S2 c$ rset [trade-record-one] of self item (([who] of customer) - 1)
+ R' ?( w: G# t9 I[trade-record-all]of self/ a3 t$ j+ M3 o% u+ q! F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- N  q6 p4 Z/ r( L5 b+ v( j( ^$ i* ^9 O
set [trade-record-one] of customer item (([who] of self) - 1)2 L; g  v/ i( e/ [& J9 _9 Y' q8 ~
[trade-record-all]of customer
) c. n5 E" r% b$ i7 W- n

4 n; q! c0 y# o3 l. U: mset [trade-record-one-len] of self length [trade-record-one] of self
. c5 G3 F, O# z' _  m& b
4 i. V0 C* K1 v4 l( ]# K5 o1 W
set trade-record-current( list (timer) (random money-upper-limit))

! \4 B+ p% _3 ^0 {
2 \3 y) x+ X9 {ask self [do-trust]8 \" `' y  ^9 \- B2 p4 c1 J
;;
先求ij的信任度
5 E( w2 ^! o/ ~% r2 \( Q: k
) Y( E/ k# T( F3 L) fif ([trust-ok] of self)7 _; b8 `4 R( d: D3 w" @
;;
根据ij的信任度来决定是否与j进行交易[  H( \3 Q( _4 P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% k+ s  Y9 p) x2 B1 N

* G9 T" m! P- l# @[

5 \4 u5 K) x, H; m5 O- Q/ ~: k) b6 }* ~9 b% x) v$ i' I! S  [
do-trade
0 ?/ L* y% U1 ~

1 y( E( ?- R* g- H( F8 rupdate-credibility-ijl
( x8 [. M4 Q. d& ]/ v
0 S: l8 z" @6 f! V
update-credibility-list/ S1 h% z. S9 C3 t" _4 ]

5 @% M0 }# c2 e0 p4 k- W2 u! V9 s( r; u& \
update-global-reputation-list

6 U5 l3 z! Z, g9 q/ I% m8 b! T& K3 ~% Z+ n- {$ \
poll-class

0 w  ~  B9 S7 R7 i  y' Z- Y
- Z. S8 V4 q' H1 R( G6 f6 u) a$ Zget-color
6 v2 T; X2 ~/ `/ z' S1 ~7 `9 B
% Q( ?8 _  W4 s( D
]]" _3 \8 ^& S4 s

. a4 t$ ~, o" L7 t' h;;
如果所得的信任度满足条件,则进行交易) a1 ^. Y0 J0 u+ v6 _2 S
0 w4 Z. P3 {; u
[
+ @2 C. I- Z6 o# W- ]& [* d

' [# q1 ^' T; h- _0 ^% I: Urt random 360
$ a, D, {3 h( I: m! \  a
5 J/ m- \9 ~9 x5 P% v, F) o
fd 1
, o$ I" k. y) h* z' L4 \5 a

% j8 g6 I& b' W8 H]
& Q" D/ e$ d& m* |/ L: b$ n
0 w6 Z3 _0 d+ [+ t# U
end
: z3 v1 p! K/ T' J: I% w
: h0 [' ^2 f# y4 ^% I/ q
to do-trust 1 W' x/ O! g' E3 [1 I- `2 `/ v
set trust-ok False
7 J0 ^- H* \5 r, }" a5 l6 o, m' W! B  u* h# f

; U0 F0 v. o- Q7 Rlet max-trade-times 06 ~; M. h2 F7 _$ z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ l: z& V1 @- A4 ~3 F- U' alet max-trade-money 0" s: |; F; q$ O' I1 v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 ?, [$ @; X+ q$ Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 W% A8 m& ?7 z) Q. J6 @4 s# u/ {+ X
& F1 E1 O: u) n4 v
: K/ D1 U! o3 z
get-global-proportion3 G$ F$ y3 r" O/ Y- ~
let trust-value! Z2 W; k* A/ H- q4 o9 Z
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)

# t# D4 w2 Y( Kif(trust-value > trade-trust-value)
2 {! `8 w5 r( u1 K9 s[set trust-ok true]- @; x1 S6 f( Z" r; h5 z
end
% @  I7 R  u* ^- B- d) T
3 d( C. V! q: C) @' wto get-global-proportion. _: ~) P( L  q3 W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 f5 ^) C$ u4 i& s6 T( |
[set global-proportion 0]" v$ w$ m0 S5 k! L; \! C! f$ g
[let i 00 s- o6 @0 v" f- a
let sum-money 0
$ J# n/ |. h/ @+ qwhile[ i < people]
: N, M7 S- z/ F* E/ _3 V[
2 l( z* ~) w# T( _* bif( length (item i
8 d& R$ F& `+ i! t[trade-record-all] of customer) > 3 )
0 O, N3 J; u' q! Q. S) r
[
9 H# D( ?) U+ R1 T' `- R3 R' y# mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ h: C4 a6 q) w, T* N# n* e5 `9 t
]
& t3 r, i  P* p9 T1 d]
* y- S' y! p5 f3 e5 I% N5 O9 Qlet j 05 ?3 b0 ^' ^4 N/ f
let note 0
2 [4 @1 k/ P3 @/ fwhile[ j < people]
. x. [( X9 ?6 q7 H/ t2 A[+ R+ P$ K# M/ ?
if( length (item i
: j5 U# a& l+ Y1 H3 G' j[trade-record-all] of customer) > 3 )

# z4 n. O6 U3 t[
. d+ C. ^( z2 w$ Y. w8 U, bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& t& s: N1 V; V) O1 }  a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% E+ f: ~) Q6 k6 a, u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  L3 J  ~! P* O3 y9 I
]
: S* S5 ]0 b* ^$ Q8 h5 n. B0 |]/ n! J! X9 w- R- A- ~0 n# |: w. W
set global-proportion note9 @' I: Q% A3 c7 }7 _
]
! C; ^5 L% |; j" {. l1 J+ Gend, d5 b( [7 s$ ?8 @9 r

& s( [& J5 v! gto do-trade
" w: A: _9 F4 I& v+ u3 P& l9 ~# H; w;;
这个过程实际上是给双方作出评价的过程. E1 n+ o  n+ s$ H6 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( d2 @5 S* ~! R0 o$ W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ R$ m. V. ~1 j4 D1 Y  Aset trade-record-current lput(timer) trade-record-current# E- Q  K2 T3 K' R( k9 k
;;
评价时间
  O% Y' V+ g4 m7 T2 K- }ask myself [
2 \/ K& t5 \( b+ G* W- D- supdate-local-reputation) L3 r# J3 r; \# W! w
set trade-record-current lput([local-reputation] of myself) trade-record-current* l' i# ^+ v9 G6 }% S+ l7 ?+ l! a
]) M1 |  W0 u8 F7 Z) f
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" ]- }4 ^3 a: Q7 T. Y0 [. j
;;
将此次交易的记录加入到trade-record-one
- f, d2 C$ I, W; W& |2 d3 kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% u! l: g9 {3 J8 z8 F5 u  Z& B
let note (item 2 trade-record-current )3 ~" [3 z/ E7 h  t' a) k
set trade-record-current
( j2 }) F: z& M6 k(replace-item 2 trade-record-current (item 3 trade-record-current))

8 d. X' s& s- t. n& Tset trade-record-current
; V$ h1 Z% D, t' U; Z, o(replace-item 3 trade-record-current note)$ I; A' V. T6 D
4 m- V1 ]% |1 s

" O/ o2 ]  R+ @: ], s3 x. {* Iask customer [/ l/ S! k/ b: ^& I4 c/ j
update-local-reputation
( C, B2 U' C' e% T( Y! dset trade-record-current
/ U- \8 a9 P  Q" _& }% l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 z5 J4 @" z$ r2 |1 e]
0 g3 C. G# k% ?/ _* U0 G9 C" P2 T" }* N
! v% y0 G6 d# P. z: D7 B! l
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 ^: _7 B2 z3 r6 O9 i
* n3 @& c2 w$ E* B9 ]7 N0 Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 n# G1 z# `( I! x! F;;
将此次交易的记录加入到customertrade-record-all. J) G, x8 a  L: S% z
end; R9 F# k: L. \8 z  R
3 I3 v/ B& v+ Y6 w/ X' x$ z& {
to update-local-reputation
' B! ]  \& {) ^set [trade-record-one-len] of myself length [trade-record-one] of myself
- \! f) n' r+ q8 ~. @3 e) A4 p  }" m6 e$ w( C& C
4 D$ ?# L7 G. z) W; Q" H
;;if [trade-record-one-len] of myself > 3
9 _9 q) g+ C% L) R5 _, a  v, N
update-neighbor-total3 M  v$ t! f3 R- M2 m6 K, j" J
;;
更新邻居节点的数目,在此进行( \/ S0 _3 D* q6 K; a8 g2 e+ M0 S8 R
let i 3
) b+ J. S* y, ]7 }) I2 `let sum-time 0
& B" s+ d9 |4 G1 j& v' cwhile[i < [trade-record-one-len] of myself]
9 U; ?& Y" c9 |. y[, e+ J9 q! N; c6 f/ G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! b, v( F2 B5 D# Y2 i6 W2 U) hset i
* a; {! D( j: f- |5 }. F( i + 1)
, Y# C0 n! k3 P6 s5 P& _0 v) ]
]
- O5 D. n+ n( y  l6 Llet j 3
. S! @' y9 }! ^let sum-money 0
$ Z7 ]9 A8 e6 N7 cwhile[j < [trade-record-one-len] of myself]
( P' r% ]7 Z2 z4 g; C) r- k$ y[1 `$ K. a. m% v' b  q$ Q/ 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)6 R7 Z2 L" e$ P# i( T
set j
6 y* x  M% b9 F/ `7 w( j + 1)
# V1 ]1 Y% O9 M6 a9 i
]& W* U: [  R# R- v: Y0 q
let k 3
& I0 r. U. d! ~1 i/ ^# blet power 0) u: W# y; U# m; O3 J+ V
let local 0- _7 y* k. D- B; k/ G/ }
while [k <[trade-record-one-len] of myself]! O0 F. q: m: q/ ?$ S5 n4 o
[& S  J3 \8 L8 x- r
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)
( B6 H" m) X  h2 _1 q# D6 Z7 tset k (k + 1)7 ?6 _+ f$ ?; q  K% G
]' R0 ?# g4 k' M7 z7 g4 P
set [local-reputation] of myself (local)7 e/ t0 s0 F$ w6 f; X
end
6 h3 S1 B/ d5 S# F/ m6 x
4 |7 l* k/ D8 p! }2 t; s2 Dto update-neighbor-total, e: [; y7 D! b* S5 {0 j

" j, f- v% ^, |8 h9 M% _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& V7 T5 j4 G+ p# e
; O. z' k" R2 [4 q1 E

) }- c2 S( r1 k  |1 jend
7 `6 a3 C& r. h
0 r+ n: S* [! B9 l  dto update-credibility-ijl
% w+ b. G2 F: p1 Y7 f
& Z# ?( d! X6 Y2 u;;
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。
  \9 a; N7 b( x7 Olet l 0
7 r: ]8 r, {* s9 i$ owhile[ l < people ]
6 i0 M9 z! {' s) R5 H, O0 H;;
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
1 [* S" y2 N' w1 E& x6 d, p- B[8 u1 G9 v! I. }1 b2 ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ x: j/ e8 q+ iif (trade-record-one-j-l-len > 3)
  E8 Y0 {# L4 F7 N1 r$ w[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
1 o0 n4 \- e- a! @& klet i 3, L, ^' q/ s4 i  c
let sum-time 0
1 V9 ?8 o% o% W. pwhile[i < trade-record-one-len]1 Q4 d& \8 U- f; Z+ ~' G
[
9 f3 C' k$ ^' Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 ~$ Z; R* ]. {2 E
set i
) ]3 j6 {# w1 b( i + 1)
; ^! j9 B& J2 x  z' A+ @
]6 \4 Y  s* w- ~: Q
let credibility-i-j-l 0, ?! p" ?; ]4 q: Q0 P8 L
;;i
评价(jjl的评价)
% h) q- {) P4 P8 ?let j 3
( Z" H! j; [) ?& L" Ylet k 4
: z5 d3 @' V! i( Lwhile[j < trade-record-one-len]+ S+ {. B, _9 O' R
[" G$ i  Z) k3 D+ B- m
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 J6 p4 T6 d' b: j* \) ^+ e  u
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)( @! Q- p" x3 }; N: H- c
set j
3 Y" |0 p' O- h8 w& @7 u% p* w( j + 1)
1 i3 H# [% z- _6 a$ i$ p
]
8 `: A3 a) A6 o7 Sset [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 ))6 O5 o6 I7 r" v( q
/ S0 b6 l% s8 a* y
: k. \! c1 \+ m3 Y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# z1 \& p' M0 R1 R! W. T
;;
及时更新il的评价质量的评价
' H4 w4 w# B7 y4 t+ Q: v! xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ g3 K1 @7 L6 F  rset l (l + 1)/ Q7 S6 K( e( r( O2 {6 M. L
]( M/ U9 H7 [& I# K. n# g6 T
end0 B/ I& D1 b7 c) |

7 P, a  K+ W  \* I3 Gto update-credibility-list) }( g) p; D" l+ }2 Z* n
let i 0" T& _5 u$ d& ]3 N, ]
while[i < people]
3 A; C4 ]3 j+ T4 U4 j[
0 w  F( H) w! J6 I& J0 n, g1 Flet j 0* g% }3 S8 y. c/ u, G, Z3 i
let note 0
& M0 h  d- y/ J8 I( y1 k% Alet k 0
% V& c0 B% G6 o;;
计作出过评价的邻居节点的数目
# o  }' {5 W" Z3 j- Jwhile[j < people]
3 V# N/ b# ^2 H8 ]$ Q- k[
7 [/ [% ]. d7 A; ]3 G/ g, b- p0 j  ~if (item j( [credibility] of turtle (i + 1)) != -1)
4 B" S2 Z6 P0 c, m, q0 B;;
判断是否给本turtle的评价质量做出过评价的节点
1 V! F  Q$ B. ^6 F. H# k0 ][set note (note + item j ([credibility]of turtle (i + 1)))  Z. ]- f2 }0 y# o" C1 s
;;*(exp (-(people - 2)))/(people - 2))]
' u# s% H. ]4 l5 _. z# _6 N
set k (k + 1)! z$ g* B( N* J- F8 v3 w% U
]
+ e2 f& E2 ^) L0 Gset j (j + 1)
: ^$ O5 v6 Y! O( F. S4 o# c) o, T]2 P2 R$ k! |2 g
set note (note *(exp (- (1 / k)))/ k)
8 k8 y; q& V$ Z6 c8 T5 n1 Rset credibility-list (replace-item i credibility-list note)
! v! k% S% N- L. c* oset i (i + 1), O' W1 B8 v3 [0 i& C% b
]9 ?0 ?# @7 N0 X$ F: ~. r/ D
end1 t: J( Y- z; x) L/ L* m0 I# {  `

( o. P: W0 e, r4 c: W7 T& L3 Oto update-global-reputation-list
! {. R% W* R# d: flet j 0# W. G6 F1 ~- X9 I2 V3 a7 s
while[j < people]6 s) h7 O( ]* N" n1 t' j
[
5 {* C; R: p% {7 |8 e- flet new 0+ V0 E( B6 i4 m7 s
;;
暂存新的一个全局声誉  ?; e" N; u# e+ I! P# c7 _$ q/ U, B* z
let i 0
; L4 p! h( U$ @; t) p; v( {; t6 x/ klet sum-money 01 P* w: k) I/ j( P- T
let credibility-money 0
5 v8 R3 w- h2 q" m) ?2 iwhile [i < people]* l" F( V! p- l$ O& `1 U  a2 U# L
[( U* n& q7 W) }( _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 m9 y  b' l3 S4 X  n5 mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* J& d3 D4 r% l+ M3 Lset i (i + 1)- i! P& S, q7 w+ C8 R; l' f4 q& A
]" Y. B& F5 p' Y) X4 J& {* D( g
let k 0, w$ C% d+ E5 \
let new1 0" n3 y) ^  g; r5 s/ V
while [k < people]8 a+ m3 K/ @7 L& U( }4 s8 _9 G
[' a) B0 ]  k3 q7 q7 S( Z) B0 c
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)
" T0 N; v; v- y% c( r/ \) Fset k (k + 1)6 u# H# G( Q3 r; O9 ^
]
6 E, d4 H8 }6 W! L% s2 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 c* ^+ O8 D3 n3 H. T/ P$ t$ e
set global-reputation-list (replace-item j global-reputation-list new)
0 ?4 [7 o8 a0 z1 qset j (j + 1)
' ?, B' D' R) J# h7 ~/ Q$ L7 e  Z. j]
3 K' v% ~+ j: d0 p" u- Fend
; W3 k; i, K5 x6 v9 z: ?, [! `1 k/ [8 R! f9 P5 v( I
5 ^' {. R" f6 q1 [2 `+ ?" B# K9 _
$ p- z. g) M7 u
to get-color
  k6 _3 {) K1 f0 T; K  X  p+ l% |
  G0 q- r- L) {set color blue
- `' X. `( l5 J  ?" A$ T# V
end
& f' ^' t- Y4 J( i) G1 N# s' o( z, J" ~5 D2 L/ q
to poll-class
# `& P) K/ _0 M+ Vend6 U' m& _  H/ Y8 l

0 p6 J3 b- I4 `) Jto setup-plot1
# B6 [  Z- L& ~: S7 X5 Y0 U, S$ M6 {' J. q
set-current-plot "Trends-of-Local-reputation"

. `: Z# D3 V0 K. G- z5 X/ s# Q' i( \5 h' x
set-plot-x-range 0 xmax

1 d/ [! m4 q8 ?9 Q. x, I$ h" B0 _9 N% A6 o
set-plot-y-range 0.0 ymax
# c" n( m2 I; S9 X4 O0 |( Y
end7 \6 U4 p% X! i2 _7 R

4 j6 M* }/ O1 j8 e/ `to setup-plot2
: g5 u/ l  [, b7 F$ E' \% H. O  c; o6 u4 {/ t. c
set-current-plot "Trends-of-global-reputation"
4 L% r& y$ G% ~

, F* Y) j4 r( M' _/ y" O. k' _* Hset-plot-x-range 0 xmax

9 {1 j5 L* |2 b0 _4 [  Q
5 U5 F, O* G$ ^0 U, t  Mset-plot-y-range 0.0 ymax
+ Z. i- Y! c; R6 J
end
- s0 s2 b1 A; k9 L
4 A. o1 _, E; |. c& m) u7 yto setup-plot3# _. D$ E' Q/ X- L' A! }

+ D! A  `! x6 T* l+ W2 kset-current-plot "Trends-of-credibility"
) S. V4 a% |! t/ X* v8 N0 i$ e$ J

( o! U8 m3 t+ P- U& q. X0 Nset-plot-x-range 0 xmax

5 Z, r8 ~8 d! ?3 `% J, j7 G) }/ I( V# M) j
set-plot-y-range 0.0 ymax
  k2 |& I. @- _: {
end/ z% W+ `& Y9 F& o7 A) r
- ^; j- p0 M$ W! y: b
to do-plots. ?6 ?9 N$ S. @
set-current-plot "Trends-of-Local-reputation"- H" ?/ f0 ?$ Z) o$ F9 u' w# U
set-current-plot-pen "Honest service"6 F  \, \; M* m6 Y0 n. d
end, n* B* I4 I1 ~4 O

' f+ w* t$ ?- }& l2 y[ 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.
& M! H( W- F2 ~  o% a
9 r# s, V! v6 i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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