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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:
, B" O; `  F. i: @to do-business   x5 }) r; v7 }6 d
rt random 360
. n( x0 V% O4 F: i/ ~ fd 1" P. X4 _' u9 E) q! }3 \( t6 K
ifelse(other turtles-here != nobody)[
# e% a8 X- r. r8 }% G4 X& L* z   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.
: H# Y3 ?* `+ s, a. e5 H4 c( i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) G. W- {, D9 |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ Z2 w, L# R+ d4 ^
   set [trade-record-one-len] of self length [trade-record-one] of self7 j2 y' o  e! J
   set trade-record-current( list (timer) (random money-upper-limit)). `" g1 r5 t" [1 J8 v8 q

$ C1 V) `% ]6 `问题的提示如下:
  k) T0 t& I4 m6 i8 C
# m: X3 O' F: S7 n; K+ V% Jerror while turtle 50 running OF in procedure DO-BUSINESS
0 m' l2 r8 N, b  called by procedure GO
  ^; t' x" k& H/ r" y7 B; y- U, tOF expected input to be a turtle agentset or turtle but got NOBODY instead.
* v2 B# c/ M  ^8 E7 G# ]3 n: G( X, v
(halted running of go)
5 h: r! z9 N% a: m7 L
) v$ ?0 c# v7 ^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~~
+ O0 }7 B/ s  a$ 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
! A0 @2 D. K$ K! t! uglobals[2 W# L. k) u( ^- k  M
xmax
, r, h) d, x8 j1 W+ Bymax
. \. r+ X0 ^' g; B3 aglobal-reputation-list
+ ]' E3 Z& I1 [) w( O6 @$ X$ e- G; h$ }" I9 k: z) U
;;
每一个turtle的全局声誉都存在此LIST
9 D3 v/ \+ {9 ^* P' Kcredibility-list4 e7 |7 D  ~. j3 A
;;
每一个turtle的评价可信度
) v+ M) V& [2 B- Whonest-service- |& W% P2 ]) e; U, R1 a. r; h' l
unhonest-service
" Q1 X; G% Q& eoscillation
. L0 Q& p. p( Brand-dynamic
4 @& x/ P; M4 n  K5 x4 y1 _]/ U. N3 c4 n' z1 d" t# o
$ I9 P$ I( V; u
turtles-own[
# b9 z, E" b; ^( S; o( ^6 p$ |trade-record-all/ y$ x. c# E, c7 D4 J$ j
;;a list of lists,
trade-record-one组成
3 m1 Y  @" D$ D, T0 e7 m2 ^trade-record-one
+ \" }' A9 j5 u% }+ d2 }2 A& x;;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 V1 p% O! X% e9 r' E: O. {1 R2 h* b0 }
;;[
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]]
2 j5 F; t- Z5 ~- g' \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]
) a9 \: M  S7 kcredibility-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
- X: p4 F+ a7 J# y% n1 }neighbor-total
3 W' v' |: ~4 @& a% B;;
记录该turtle的邻居节点的数目
& @5 p1 n. R. [4 y/ Q- s2 A  z( Q* O/ ptrade-time9 \$ A2 H9 p0 x( G# _- \
;;
当前发生交易的turtle的交易时间8 f+ @8 [8 H/ O; U' P+ e- \! J
appraise-give
" K" V1 ?1 n  ?5 j' z;;
当前发生交易时给出的评价
* Z2 ^' w' h! B4 k2 `9 \$ M) c. zappraise-receive) A6 q: q& @0 u0 ?: w
;;
当前发生交易时收到的评价* m! w5 F8 p) ~* U% A+ X+ W
appraise-time. C$ s- Q. {/ O: ?# V6 b
;;
当前发生交易时的评价时间2 Y. S8 c, ?6 F# g
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 R% A2 r& D8 [+ t, ^trade-times-total5 i# ^# L) j* a
;;
与当前turtle的交易总次数3 k8 m7 J6 J! I  G' @# T
trade-money-total
, i, F  Q" K: I1 S- F3 G+ E  I; n;;
与当前turtle的交易总金额6 M% q1 \2 U$ d7 E* E, f6 m6 R
local-reputation
  M: C; l- M8 ?# {9 k; J" M  Rglobal-reputation
8 t. v; o; Y. `$ l( d; E% @credibility
1 A" y/ H) T: b4 P;;
评价可信度,每次交易后都需要更新
* t1 F# P8 |. a6 kcredibility-all* H- t  c2 G9 P6 P* m. Y
;;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
/ f0 Z# |* A! n/ C. v2 l# {& R- }5 [
% O# U$ R( g; i8 Z;;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0.58 a) J- f0 I0 k5 j- Q
credibility-one0 R) x! q* k6 x6 J' e$ a7 ~2 s
;;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
' `4 j6 R0 c. }! w# R1 J- oglobal-proportion7 D5 I. w3 ]8 K1 c; ]
customer
% t( I9 w2 g  `/ W. R9 X9 hcustomer-no
7 P/ L  i0 @+ x5 X) ptrust-ok
9 B7 D! ?1 \9 Q9 e: ytrade-record-one-len;;trade-record-one的长度
/ J: z& g: W2 T1 Z& M' N' M" f]8 _% J1 R; \7 \& q
& ?+ t0 ~# T4 F# {5 W
;;setup procedure
" q6 }2 g0 Q0 R( a) Q4 w) H) S
; d" \7 x8 L0 u5 wto setup
( E' n: c$ I2 U6 F& r% S2 u7 d8 Q, V
ca
3 }' F* a. v0 a' j' ~1 P1 i) v

# H) L8 M) T0 t9 F$ U: {/ N9 n  \initialize-settings
, a" O& p0 \" T0 r

) U+ o5 }2 D: z( e2 A% y5 l9 Mcrt people [setup-turtles]
9 }) b* f3 d5 M- {: W' o
* C5 O1 c" \, A' \9 F
reset-timer

! ~- g7 E* l* K! D" ]) w: c
, D) A( m+ |- E# p$ V( v$ Xpoll-class
% u! `( @# _2 l$ J2 ]
: d  `; G5 b* O- Z0 s
setup-plots
0 _+ N4 P* F/ H: c

6 I: D; f# F0 s3 ndo-plots

4 z2 j# J6 G; U* A. m, U3 b$ A6 `end" U; r& |# j" m, `
* A! k& |$ Q' _- l# X
to initialize-settings5 Y. D# E0 L2 {0 m+ g- _

& j5 o' N8 L: i7 X1 j7 bset global-reputation-list []

0 i. D+ v" X8 ]+ O
1 T6 N9 X7 y. \! [8 xset credibility-list n-values people [0.5]
2 M0 a+ B( G# o: ^; E% U

. Q# b, |  m6 x0 i! f$ r" uset honest-service 0
. F. I8 O% X1 Z
* J. M, o3 d  H6 @8 F* {
set unhonest-service 0
9 h7 g  J6 M4 L! q0 ~# p
  ~2 v/ s+ w, s& G2 g- E& x
set oscillation 0
1 L0 [0 W3 e9 a2 Q! Z

  w! f' R; l( Rset rand-dynamic 0
1 Q0 G1 M: F! X2 X
end
% P# o! H8 c1 i" e( M) R, H0 q
! B4 k( N# U, c  C2 \  Mto setup-turtles
4 ^. g6 H& M, B, k# yset shape "person"1 \! k! s, Z# \5 O
setxy random-xcor random-ycor
$ n" U9 [0 Q* h8 z; wset trade-record-one []
% F+ c6 A" P" o: W7 i7 M

( f3 {7 G7 s- ~  ~/ mset trade-record-all n-values people [(list (? + 1) 0 0)]
) f& z- @  @. _, ^

0 e5 M, X& Z2 R7 yset trade-record-current []4 i2 N6 Q( }* x0 @
set credibility-receive []
4 {2 K; ^+ @* Yset local-reputation 0.51 h$ v$ p! k) p- a8 j* ^
set neighbor-total 08 m4 H5 K$ t% L$ {% K% f8 n
set trade-times-total 0
/ r1 b5 e# C! z- e3 q% Xset trade-money-total 0
5 Q" b3 V- ^2 z+ V* A/ w1 ^# N' |set customer nobody
0 W7 g! g$ i! ^  d+ L" E& Eset credibility-all n-values people [creat-credibility]# E) M" G" T# F1 S# M# a5 ?
set credibility n-values people [-1]* q$ ?( W$ O9 k* Z" E3 w
get-color, p) k6 k9 F" g  h8 a2 w
* v3 i! c0 s8 q. O9 x, F
end
- z* d7 m( \$ B3 K: a1 h3 j! L9 C4 A" ^( f$ e% @
to-report creat-credibility! @6 h5 T  ^' R+ E
report n-values people [0.5]# s9 X8 N& k0 X# K! L/ V
end
& t& S0 }9 ?6 r( T9 P+ j  R8 k3 ]/ N* V  A5 `& B
to setup-plots
# u2 K' `2 |! a/ h* n( R( S5 }8 G: R. z( O8 w! P
set xmax 30

/ X0 J: s4 P* F5 ~2 c! s6 o* q$ h1 b+ t% b  |
set ymax 1.0

8 e: Q; C: ]8 O# ?5 @4 \$ w- c8 L( o1 y6 g7 v2 D' E
clear-all-plots

% R$ H% ]% B; S, v4 i
* [2 x+ X. q$ `0 ]8 asetup-plot1
1 c' y8 d. i% u9 u5 r7 ~

0 x" s5 k9 T2 Bsetup-plot2

9 e$ Z6 k- ?0 ?: |: d
  E3 ~. _3 D' ~# `1 W3 |. J2 ~9 x% ^setup-plot3
1 V! a+ I/ p; N' u* f
end; F, h. i3 }# i7 b  j; I
3 A, p  U& [& ~$ _7 H4 w! A
;;run time procedures3 I! }7 V: _% o2 t

! D4 n& [' Q: z9 W- Y& uto go
& z$ A4 M; D/ L0 M1 c; T
9 b7 b* z# q0 Z6 U  ?! qask turtles [do-business]

: [2 m  |2 B$ C( k" A# send
- H5 \- Y; D% z+ {. B) y& `# }! D: X8 Z7 U
7 _2 I; D9 g1 g4 h: Q3 g; t/ Lto do-business 5 |. V0 L- z5 F7 m' ^. Q

! L% E3 ^; Y# ?# {% C" A% c8 I+ w$ J- @
rt random 360

5 K' z) V, H# q* K
! h  H, R6 t4 z- O$ F! Q$ C$ Afd 1
2 b! G- k; C5 s( F' m& S) n
# f  i; H2 ~; P, ^& J. A/ X
ifelse(other turtles-here != nobody)[
& y! h4 }, T# _) J+ ^( y% F6 Y
' v9 O: f' ~, e8 N/ ]% S4 B; b
set customer one-of other turtles-here
' h* }+ z) }& c- l

. u( v$ G* M; d;; set [customer] of customer myself

0 h2 x. B: R3 |' R( }- m2 G, d% n; A* `) R1 w
set [trade-record-one] of self item (([who] of customer) - 1)9 m# q  t1 r+ D# ]3 U3 \, G! L
[trade-record-all]of self
. c. m* r& G' y; K( ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) i% E7 a0 _) o8 l! O6 K

6 v4 a5 @; f0 g$ E" q6 qset [trade-record-one] of customer item (([who] of self) - 1)
/ E& m2 m- m" o2 S/ i4 V  a[trade-record-all]of customer
& v+ y; t3 y5 |- c' }5 d$ b
( ^6 ~8 e3 z' F( k
set [trade-record-one-len] of self length [trade-record-one] of self

0 b: b3 a9 R1 ~& u( D
" k( J+ y$ B2 ], u; kset trade-record-current( list (timer) (random money-upper-limit))

8 R) `$ U& X$ ]" N
8 K$ N$ |4 W' Vask self [do-trust]
6 V/ H/ h. }4 G  f8 {. a;;
先求ij的信任度
# ?* C$ |0 W! p8 i
$ i1 I  q% K5 b, u7 Rif ([trust-ok] of self)) I& u8 `+ y. l
;;
根据ij的信任度来决定是否与j进行交易[
% ^0 X0 T( m  Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 D; D  C' C% {7 r4 P
3 e  z* r! c) k
[

% @' J8 N0 s6 B& K; x2 T2 A1 y- z& B- j& J/ K& W
do-trade
" o) H: T8 _5 W  M! M& W

) T& A3 z4 n) f0 J" o0 W8 b' _; wupdate-credibility-ijl

% z( _7 `! a: ~. I3 f& c5 E, H1 B8 L5 u
update-credibility-list5 C, [- a7 M1 O

0 A, N8 r4 i7 p& S0 c2 C% E  z' b. ^1 N; m9 p* k7 ]
update-global-reputation-list
$ E5 `' i! O/ O( `/ y5 o; K

5 m$ [4 x' v- ^4 _) }poll-class

! L; ?2 ^" z9 c$ ]. ]# \6 N8 V, M! U) a8 t9 p5 U* H: @
get-color
$ Y" ?; Y$ z. y; e
3 U2 n& Q8 w' h% Q9 y
]]+ {& ~: ~! t$ B6 ^
! h# g8 b' b% i' R( N- B3 e; s/ s' C
;;
如果所得的信任度满足条件,则进行交易
5 l4 T. |7 t; K. L* G- x' N" a9 T1 r2 ?. y1 C7 n
[

( D! x( X9 b1 Z4 ]8 p' V3 o6 u( n6 g. U8 L' O/ C9 `9 ?
rt random 360

* \1 X. t( P# g3 ]& v. U0 Z0 E
+ t. P+ h/ x& _fd 1
+ v$ C/ b/ ~, \3 Q* J

6 O8 x8 `7 h1 _+ ?8 v! B]
" T- S9 D+ |" z" M

& u# Y% j5 K- f' Xend
! H" W' M$ j% ~* [. J2 A4 W( r1 u

. O9 j6 \9 l3 U# h$ e. ~to do-trust
6 V+ F6 z3 d6 w9 J# C2 jset trust-ok False4 O9 t) L* [3 P$ G/ _0 p# R

3 N3 r+ k: L8 B/ ~

9 B: A: e& T' Tlet max-trade-times 0
6 e  @7 ~1 o' \! p5 Dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 X" C' E7 {# K" T$ Hlet max-trade-money 0! x$ g( e8 b+ {% U" ], r' K4 M# i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ p) ^5 I2 o& U, U7 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# f8 o/ ^" A8 `, @7 D; V/ O- R; t7 r
3 }# c9 x4 B, B5 ~  t
get-global-proportion+ H: g0 D* P2 g+ {
let trust-value
- `7 o, L' O, M) @$ h4 ^. ?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)

0 ^: J( o1 x) \  O' cif(trust-value > trade-trust-value)6 ^5 h6 p9 |6 C  d& v  A( ]. `0 S
[set trust-ok true]
+ H% m% a: c+ }( p  k3 q0 lend9 X. t" N8 h' X* \+ e+ }" h

6 r+ c6 g/ t! @& jto get-global-proportion( Y, B2 F. U9 G4 K, M
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  ?4 E5 g8 p" \* F' b; `
[set global-proportion 0]
7 I: b  h% a% o3 i' f[let i 0
4 B. `8 x1 o7 E/ v) zlet sum-money 0
9 j& H8 R/ j4 `9 z! twhile[ i < people]
8 e" V7 l) t6 L# }; @) U  y3 {; G9 V5 p[2 V4 n: z9 y3 w) w) j
if( length (item i
& b+ J+ C0 s6 R8 n* ~$ M[trade-record-all] of customer) > 3 )
4 S+ H6 U4 s% N7 e% R
[
: B/ E  r( t* Y3 L7 V+ |7 Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" X# k7 T1 g& |$ Q, v* t* I8 w
]
4 D  P: W1 p( `1 _* c% S. A]
1 i+ \- d# ]. ]- _let j 0
1 M9 g& k4 T6 s+ {let note 0, u7 ]  z( _4 S. l; V
while[ j < people]- T% o" r6 f; q  [
[
1 f: I, M  Z% E9 |0 o! L( bif( length (item i
1 D- ~- H9 Q; w8 U5 U7 _[trade-record-all] of customer) > 3 )
5 V9 q% J. r0 `: v4 a+ {
[
- Y8 F- t7 @: b. [( p& jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: s/ w" ?+ L8 j9 i+ J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 t( I) _5 Z& z; P. Q0 I% B8 A[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" `! O. z- q; n- |]- y- Q: A) ]% Y: N
]
# f7 U' |# J1 I7 U1 Vset global-proportion note  b" \1 F! v+ x: P8 P& Y4 H
]
! I5 c" X" W/ Q8 l7 m+ O9 v; [end& R# @5 k* x6 l! S& Z+ M2 ~
/ n* \6 f, P" m8 W" }& h
to do-trade
) Q# d  q5 r2 o; ~6 i8 |;;
这个过程实际上是给双方作出评价的过程
' w' s8 d" w' o: oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% o" h) L$ Y# x- hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; Y, [& l+ P8 D! l3 T9 eset trade-record-current lput(timer) trade-record-current! Q6 }' c* k  S
;;
评价时间
8 b9 g. S4 K# t2 G) gask myself [
( o9 T# w! M: N; E  R$ Z+ L0 Cupdate-local-reputation" Y# e6 }# I9 x3 w& }! a2 t: n
set trade-record-current lput([local-reputation] of myself) trade-record-current
  p. k5 L9 t  k+ i* f% z: h]
' ?* G# t! Z: {# t. a1 d, {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ ]. t. u; v9 ~" k0 w
;;
将此次交易的记录加入到trade-record-one
) ?# z  ^8 W; m5 {% Q$ r+ mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ c( C# ~5 C& U! g5 O# xlet note (item 2 trade-record-current )
  d9 C8 O0 G# u, i$ ^: @1 Aset trade-record-current
" }& v4 E7 f3 v0 k) g/ g( m(replace-item 2 trade-record-current (item 3 trade-record-current))

# R' w2 S- \7 Z) x6 |+ U& Lset trade-record-current
0 O( R8 N+ N3 J" j: `(replace-item 3 trade-record-current note)
1 @  a7 O$ O" _0 ~% {6 f5 u! C6 e( X( J" k" w; h" o

! P$ s0 }" _6 H' B9 v/ `% `" Oask customer [
' A, @- M' b4 P* J. Hupdate-local-reputation
5 k2 p; u$ p' b% d# s" ^set trade-record-current
6 N" M+ r& L/ t1 D4 u" U+ y1 N, E2 t. F4 _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) ?& ~  M1 ], X
]* U6 }" n! I$ N1 K# o( @, Z
: M: Y4 L) z" m
+ @% A6 e- y: @; J4 I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 E3 |# y( q! h5 E, K8 p/ s  s
6 W1 w; g. x, d" R1 q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 P# u( s. ?  X* `
;;
将此次交易的记录加入到customertrade-record-all
8 G$ t5 ]/ B; i: }end
' W% j# ~# ?  Z8 v) {& i
+ v- l1 j4 X' e9 Rto update-local-reputation
6 r" V8 C8 \) hset [trade-record-one-len] of myself length [trade-record-one] of myself
/ q3 K9 X( E. w: D1 f! {+ U2 c$ ^8 h8 J4 p

( o& L8 Q% V& V& x. Q  n;;if [trade-record-one-len] of myself > 3

2 W$ M! t4 o: B- K/ n7 k& C5 @/ rupdate-neighbor-total
" l7 O' g& L, H$ P" l* w! k;;
更新邻居节点的数目,在此进行
& I% z6 e9 ]" K% f- J/ O7 m: f/ dlet i 3
$ J, Z$ v. ~. |) Q) m' {' {let sum-time 0
' a4 t. x! q5 o) E6 Q4 R# nwhile[i < [trade-record-one-len] of myself]/ W4 ^: _! j5 F2 I& B6 G
[2 O8 g$ |& a8 T! h* r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) R, i& _* ?: T
set i
' R) m1 Y/ P+ j/ \8 w- c, K( i + 1)

1 W$ Z1 J& U7 P) T]
" B/ O* e9 a) g1 Ilet j 3
7 J. O" Y' f. m& _& ^  W( Z' c5 c) Llet sum-money 05 h' \7 s% j* Z
while[j < [trade-record-one-len] of myself]
8 E" a8 Q6 n: k9 a) l% o[: r" R$ ]* N( i" [
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), P6 ]# ]" T. F; e
set j
# z5 N; }: }* [$ O( j + 1)

8 _- O. M( x2 E- K* g" u) z2 Z+ u]
& y( P$ J1 r: K. v- |3 T: Q. Qlet k 31 a3 ^" Z, v( m/ u
let power 0& N9 j" j5 f# K( Y
let local 0
0 ^4 i7 H3 H. `# e1 f4 T  ~while [k <[trade-record-one-len] of myself]
1 q9 \" z8 X& Q: H! j8 j( p6 s' z[# I' b6 G' x% Z: E. h$ _
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)
4 ]4 D; c( _7 e/ o/ iset k (k + 1)
( `4 m( T9 v1 k# j' I9 W* ^/ o7 I]
. Y* v# N, d& C/ X5 Q& l( iset [local-reputation] of myself (local)6 ^. M" z; c' a5 L0 U: S3 @
end
3 P3 k3 ~  w' H
% i+ v9 i6 V9 w9 b( M- r, m2 Z0 a2 kto update-neighbor-total
! L% i3 r" l0 v  P" r" S0 u! \0 }: S( c: x( o/ a
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 x/ B8 t1 q/ h7 _% a% {

+ u3 R6 E" Z" p5 H  G
- W# {! U' ?6 @, E
end
' [0 g, h% d" t5 G7 [! X2 F" D( e' G0 @# S' e
to update-credibility-ijl 2 z; B' {2 J4 C$ f( }" g

* m) }* i% c& a9 }5 z;;
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。
7 D8 t/ v, L% B# V" Dlet l 0
1 e  |1 X- R, }  s3 ]/ }while[ l < people ]
  `8 o; W7 N+ S6 D- b" J8 q; };;
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% M! J) [! ~; ~
[
: `5 U5 j, w+ n/ u+ \' \; v% Plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 c, s1 u; h  @! n! F' }if (trade-record-one-j-l-len > 3)
1 y" B! H1 ]7 |[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" W$ @5 m7 K5 `
let i 3+ o7 B) o: n1 X5 |8 M8 n  \5 E
let sum-time 0
( D- x8 K8 V2 \3 U1 r( t3 Ywhile[i < trade-record-one-len]8 Y- {, M7 v* j+ `% d9 m  X; a
[' }$ x+ W, I6 v* H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! ]) ]  V+ d# y5 x, `
set i
) D; H& d1 x& _/ v( i + 1)

# m9 x7 S+ N( u]! Y0 Q4 h- F7 C* A- U7 ]6 J0 s
let credibility-i-j-l 01 X; O8 X% U' [! J
;;i
评价(jjl的评价)
% q; _$ F0 H: e: g: s$ R/ Clet j 3
8 }* O' S" N7 llet k 41 Q) k; N: s) ~% s) Y
while[j < trade-record-one-len]- w: o0 `4 I  t5 {. j* Z% i
[( g3 `& V: E$ c. J# N' `
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
, `! {. v! V! {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)
! f7 u; B8 @- `% x0 o0 |set j! T$ T6 @+ o1 U+ y7 S
( j + 1)
1 h8 P. S# v) _$ j& r$ P) d  P4 S: O& ^
]: i3 P( `/ R% I1 b. 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 ))1 V) s# T+ n6 ^7 y  C

# N' p2 r9 R8 S" k9 v4 C4 A8 h0 q
! g5 n$ B4 Y6 N, [8 I/ `+ U" {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): G  e" y9 k! P" c
;;
及时更新il的评价质量的评价" a3 @  s7 @% k3 A& V* {# s1 O4 t3 j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; J& ~. E7 a+ u4 `) S3 Nset l (l + 1)" f4 ]; M" \/ b9 ^0 s) i5 V! N7 j
]
: Z2 C( _# a# ?4 zend( {4 M2 T8 u4 u% R
1 a- _/ h* h' f- G
to update-credibility-list% Y9 M" r$ X8 [2 J+ e) w' o* O
let i 0
( \8 K' b$ [2 S6 m6 ]; Y. I* b7 Owhile[i < people]8 K5 [9 c5 z, d5 i, K% `* B
[
9 k* E6 G, N0 R$ B8 Clet j 0
! [1 `2 G( R7 E6 Blet note 01 }$ P! O" g& Q9 z+ D0 n7 _8 S+ t% V: N5 E
let k 0
$ m& M$ H4 s3 p- `/ L;;
计作出过评价的邻居节点的数目
: v6 o( y6 i; U7 k- b, Qwhile[j < people]8 b+ q5 E+ U8 E
[
$ E, j. C6 H/ m& T- r3 J8 Zif (item j( [credibility] of turtle (i + 1)) != -1)- P+ @5 a4 W2 l# V
;;
判断是否给本turtle的评价质量做出过评价的节点+ v# A! w* H+ Q2 i/ [/ {7 a% q; |8 L
[set note (note + item j ([credibility]of turtle (i + 1)))
/ e6 C7 m$ x( j% f;;*(exp (-(people - 2)))/(people - 2))]

: K% y: w# f. E& J2 d5 _9 lset k (k + 1)
( P& `5 \/ Y- \( w$ W]* D  @& I0 z+ V0 ~0 X
set j (j + 1). h# ?% T" ~# j. p  B4 g1 M
]2 w; X$ V0 ]6 @* i/ d
set note (note *(exp (- (1 / k)))/ k)' v9 o+ ]- k' i4 v8 ~
set credibility-list (replace-item i credibility-list note)# l# d6 @/ b5 T# s' o
set i (i + 1)
0 i' B6 y2 p. e2 b6 _3 |. k4 x]+ t: S* R) |$ G4 c' Y3 @/ z: l
end
- N7 [5 T* A9 Y+ t0 l* d5 J
6 R- r7 b! i8 Y! _- h3 {to update-global-reputation-list  W9 z& O1 h8 d1 H
let j 0
- k! p3 }; ~) V; c5 a- x7 wwhile[j < people]& m% Q  \8 x  c/ a4 F6 h
[! N0 o+ u* X, e( @& m& q7 ~# p8 T2 R
let new 0/ P8 q2 q3 q' S' `# [5 R
;;
暂存新的一个全局声誉) j# A! ~7 I5 t' t9 w0 G( n( J
let i 0
0 F/ S8 V( e5 ~0 m/ o: A. y5 N$ i/ c5 elet sum-money 0+ L  A* n; [* q2 Y* W
let credibility-money 03 X/ W' Y  D0 G  Q' [4 N) p
while [i < people]
, Q$ z+ \2 M* v[
) C5 Z, ^0 R* a- Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 F+ o' ~. v: }4 r& Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 [- _: g! m- `. O6 E5 X0 n
set i (i + 1)
  X- G4 e! R: h* |0 c]
7 [" K; I# ^; q2 {9 e" {1 B! flet k 0
9 ?8 D+ M; p  Mlet new1 0; W) w- y7 l2 h
while [k < people]
+ _9 k! `" ^! S% x- A[
$ m9 h& p. [# n4 \8 Cset 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)
" N$ ~) g6 _; g& Z& ?set k (k + 1)
9 X& K! g6 C, w! `4 q& K  L! M]
: P: J. l; r/ c. L- ]2 E/ q9 Q0 aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 B+ J: \$ X  U0 G$ ^5 ]% uset global-reputation-list (replace-item j global-reputation-list new)0 T3 D. _8 h6 V3 ]( V
set j (j + 1)" ?  R; L5 _! i
]
2 a; j& A" Z1 G8 r2 jend
2 R$ M& y0 L: Q  S$ g/ k% |( I. F& z/ j% ?. _
4 ~7 s% V9 Y+ O# H

9 [( b4 b3 ?! ?5 J8 L9 Vto get-color
* j# D3 p, g- B9 z! W) |# [4 A, h: j/ E! e6 n# g, Z  A
set color blue

* s+ z8 }  N& Q9 i" Oend
* N# {( T) b) [
- C. l1 Q- V* x( _! N/ i8 Uto poll-class
7 q5 F  U, F! D$ b3 v9 W3 Uend
* F: Q# X3 @1 B8 R, _7 ^/ p* M# Q2 U  c
to setup-plot1  Z) }; z7 N7 f; K1 {2 R. n: K: F

, Z1 y- U/ U7 f: s$ J( kset-current-plot "Trends-of-Local-reputation"
$ w! R: ?% w5 A; k$ P! J5 ~7 b
6 D( B6 J4 u$ b: B4 A7 I, U
set-plot-x-range 0 xmax

0 c4 j* E5 N5 Q: F* P& A6 M2 @2 w8 ]; k* f/ e4 e+ t; H* s7 g9 r
set-plot-y-range 0.0 ymax
/ A5 X% k2 ?! ]
end
9 e; W: L  m3 _5 O: X1 h
4 t# V3 ]( K; ^. q6 Sto setup-plot26 q# u+ x* j- [  @

7 T, d  ^% a! k; D0 eset-current-plot "Trends-of-global-reputation"
% d  K% U' u; ]' ^2 c/ R5 W) n
( o  X5 t- n+ d# j; \- K
set-plot-x-range 0 xmax
, ]' B) T  X0 j/ M+ A) A
9 t* A1 c- L7 K# M. S; T. U& ~. Q0 O
set-plot-y-range 0.0 ymax

1 l9 c( G+ H- rend" ]" e7 Y! k6 z  d
0 ~( v* {. Y: b5 d  ]3 Q+ v
to setup-plot3
( e$ t; f+ F+ @4 h
& U/ R% X" r" zset-current-plot "Trends-of-credibility"
, u. P5 A9 V. C+ u8 C- W

- J5 L  J* e4 Pset-plot-x-range 0 xmax
4 {: K& v7 o/ ]" `8 e3 N
9 I, Y! ~# r5 f7 P, V4 H) ^
set-plot-y-range 0.0 ymax

  i5 ]$ J- r" {end& S+ K5 R2 m9 F% M. n

% `6 r* N" x9 I7 Y1 fto do-plots- K8 W, `# u- ^. r5 d& o+ n* L
set-current-plot "Trends-of-Local-reputation"& g2 G/ r0 N1 X5 V4 Q" V& s! ~
set-current-plot-pen "Honest service"8 D7 z! i5 v3 P% J* N$ y* K# ?
end. }% a+ x$ t+ j; q) \( ?  M

; ^! ]' g& y" W- q8 Z[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
3 F' f5 t9 J- X; c! D! T1 d& _* S+ f4 z2 n  h( z
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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