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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:# y& S+ e" i0 b# \* R) C
to do-business
5 A6 {% J$ o  J! y rt random 360, x$ d+ `2 N1 e2 ^0 l2 _
fd 1  z6 j9 f. ~- _. f. U: `0 r( H0 _
ifelse(other turtles-here != nobody)[
% d; `2 a, `3 u6 u   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.+ y* y/ ?/ o; A' }4 ^4 d; k! `5 @, e6 ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; ^$ Y2 q' a! @$ F$ e1 j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, G4 E  J/ G3 V2 P4 c. k   set [trade-record-one-len] of self length [trade-record-one] of self1 X% {/ N% o* I: b$ o5 x1 |
   set trade-record-current( list (timer) (random money-upper-limit))
  [$ y. e# R2 x5 e3 w4 u* B3 [% D2 R4 v
问题的提示如下:- e3 _; i( X4 |' i) ]) s: R+ d- ~

" Y' U5 u. r1 l3 Gerror while turtle 50 running OF in procedure DO-BUSINESS* m/ I& E- ]- {* r
  called by procedure GO0 i/ a; ?0 l9 D( ?' M. X+ E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 N0 X) D9 b2 A/ I2 l* [+ ]
(halted running of go)+ T8 M1 d1 G7 R" {  M. z" N: P
2 P2 E. i( S0 V% 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~~
! r$ H5 A! _3 a: G3 i6 I! K' s1 p% W( P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
0 S0 I9 }' \8 d4 a7 {globals[6 r! ?- c1 ?6 c
xmax4 S" f: K# t7 m4 |6 r4 \
ymax& U( _' ?& Z, g. V# ]
global-reputation-list$ j, @# Q  ~  ]% F

7 `# Y: u) {/ v* l: k, _( D;;
每一个turtle的全局声誉都存在此LIST+ {$ r5 B2 u# ?: {7 R
credibility-list
  Q3 V0 B! a9 i. }4 v;;
每一个turtle的评价可信度4 u' {9 d- f# p. A" g" W" @
honest-service( X+ S, `+ f8 N/ A4 v. P
unhonest-service
( p5 v( z/ [& G. ]( z* ]3 I  Xoscillation
% m' k- D/ o6 a/ w7 c, Lrand-dynamic& |) _! b$ v) j! `
]( J! N+ @( z  O* a# V7 g

% s- Q8 b  _3 {$ I) G( nturtles-own[' q1 {6 |. I  d) M
trade-record-all) M7 @7 e1 w1 l0 b0 r* o4 ^
;;a list of lists,
trade-record-one组成
1 E& F$ E- ?1 F& ]9 @8 Ptrade-record-one
" v1 F6 m" ?1 }! [8 ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, E4 P0 M( y' |6 ~" E" N! E) U0 A, ^% ]7 w9 S" B
;;[
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]]7 s6 p- F( T6 b/ l7 H8 ?
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]
( }  h- }; ^  Q% J; p$ d$ C6 j& ~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
8 d5 j4 p9 w2 bneighbor-total
. H7 d* S/ o* ^9 [;;
记录该turtle的邻居节点的数目
0 V' H+ m! c7 ^; m8 n+ y1 Otrade-time5 i% A3 k% x( O" k9 z  w
;;
当前发生交易的turtle的交易时间
& [) p+ [9 s; N7 l% k4 `. b1 X. J% Q, K0 Happraise-give7 G% c8 j+ {( v. p3 l# D
;;
当前发生交易时给出的评价6 O- y6 G3 k0 k+ X4 q% ]# r
appraise-receive
' O: L5 ^( ?; r% q;;
当前发生交易时收到的评价; j0 K6 o" [- r! w! e' ]& y
appraise-time
  k- c; \8 c  G;;
当前发生交易时的评价时间
, x; A2 F+ Y5 w. z2 o+ D# }local-reputation-now;;此次交易后相对于对方turtle的局部声誉* S. g; [5 ~" \# m" r( }) O4 j! t# V
trade-times-total9 ^% `' E1 R8 r: {7 Y' ?
;;
与当前turtle的交易总次数; G& v8 _* |1 \. u& a
trade-money-total
4 g8 F. G! E5 N0 j8 p* ?;;
与当前turtle的交易总金额9 i9 x; S: t; |- V( i3 b
local-reputation
/ B& ^! C7 U; K  Fglobal-reputation6 \. z, `* ~0 {( }
credibility
! C% r0 p+ E4 B$ m% i;;
评价可信度,每次交易后都需要更新
% H5 Y7 O) P. bcredibility-all1 c& Z3 t6 O4 j+ l
;;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( a, `( `6 ^; `! A& ^
/ F9 X- H7 Y$ a
;;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; ]; y# t, y5 J7 @; u, j( E
credibility-one
, P, }+ x& e1 C1 p$ @6 c;;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, m7 M# c& l/ B, t' S+ V. O
global-proportion
) L- g& r. ~, a1 U$ vcustomer
' U2 ~2 F: B) Ucustomer-no
* ?  ~! p9 }( r  utrust-ok) ?7 o; k! R: c9 d
trade-record-one-len;;trade-record-one的长度
9 {0 S6 h  l; H  g. A7 _# X+ n% v]. j% {% j3 ^6 z/ W/ n/ l: a
$ h/ V9 Q; h- d7 Q/ }, U! ~# e
;;setup procedure9 n4 k$ i4 U8 b  t2 `0 ?

' ~0 Y4 V3 S! u- Dto setup
, j, [& _$ o1 L2 T2 I9 u8 V% _. T) z* ^# v
ca

- E* `' y4 K# [( N4 h5 N) q' n7 x& b
initialize-settings

  O: i' G; T5 E3 T; A; V! C5 x* M/ z- |
crt people [setup-turtles]
3 m8 T9 G8 ^) f; Z6 n8 E5 p
* ^! D) R7 A: R8 F- _0 ?# A
reset-timer
9 m/ ]4 S- f! B; ^7 G" I, ]

  C2 ~7 g7 S' a# q" @poll-class

3 G+ c) K1 G3 I
/ `- i: C) a9 w8 m6 q! {0 Ksetup-plots
7 p7 C7 M; i2 `

( u" u% c* w* z/ @6 ]do-plots

5 m5 m. n/ ?) E* ]4 uend' k( F5 t3 `# V+ n% [

5 @, i1 {7 a! ]2 Yto initialize-settings& c( ]& [# h, V' j+ Q8 L

# ?1 X! |7 ]: J) _% _set global-reputation-list []
3 i* r3 ]7 X$ e$ v) `
5 e$ W" s7 U, ?. T: S
set credibility-list n-values people [0.5]
  ~6 n- W- k/ Y  L# `% v$ Q
, D& Z, z5 n# p3 c0 _
set honest-service 0

! \" C/ M: \+ ^* U$ o+ I! W3 a2 O
& H7 H3 Y, C$ Nset unhonest-service 0

0 x2 c4 y1 Y+ o1 j6 R- c2 A' \: g7 [$ x
set oscillation 0
0 T9 I3 @2 K) a  z9 D" `

. T0 U4 N7 d$ z, \! ^' V* C  oset rand-dynamic 0
& [; K' i7 b9 X. |* O" c" ~5 g9 i
end
+ |$ g) ?) ^: S( ]2 v' O, E: j0 D. E/ n* ]9 Y: g
to setup-turtles ( \! p) W( M; _
set shape "person"6 Z$ x. u9 z% p) }! t
setxy random-xcor random-ycor
& F3 V$ O, r: e: h4 vset trade-record-one []) V  L0 T- w' y- g* _

2 b/ c8 x" @" b  M  y5 Pset trade-record-all n-values people [(list (? + 1) 0 0)]
1 T+ N# `0 q7 Y4 M; D( o1 k

$ X) v( R" R% {# e: \9 ~9 dset trade-record-current []2 W8 o' A/ q" G& V2 x9 P! y
set credibility-receive []' b: W1 F& Z/ x9 c4 x+ K- j
set local-reputation 0.5
* _! h6 d  C( V0 P* h/ qset neighbor-total 0
# }0 ], J) I" k3 Pset trade-times-total 0- k+ F7 W+ |0 ^0 _# Z  o
set trade-money-total 0
$ f8 D6 e5 C' v0 x9 x' c: ]set customer nobody  w/ [) Y1 U2 S9 A
set credibility-all n-values people [creat-credibility]
# Q8 y8 a6 q, U3 t' i, a: lset credibility n-values people [-1]
# D& f; p% K* D5 J3 Hget-color
4 E; g% j3 C. u" Y3 ^9 X7 f

' F1 A6 _7 k0 `end
1 ?7 ~8 _6 O1 M3 j. |, |
) Y4 b0 A; w! O( O0 F4 V8 Pto-report creat-credibility5 W  K8 w1 K9 l9 x$ ~
report n-values people [0.5]2 m  {% c: ]' R* l) u! }
end# M! S; D9 L6 M
% i7 n' k5 X9 F4 P) d0 j0 J
to setup-plots; R9 ?0 p" `% g% t" R# }
" n# k! K9 v  D6 U) ]9 c2 G
set xmax 30
. _. b; ^/ R/ l* \  E
& {, V( J! |! g: V2 d
set ymax 1.0

8 o9 D9 N' \2 v: ]* F' X0 L# W' {; L
clear-all-plots
8 U- z2 {) Q7 s, m" t& H  o+ `

  A6 p  ]6 K) C/ Q7 H, q& y' Csetup-plot1
& N$ |6 I4 @: `
; P/ S+ j- H5 H4 c" p/ A' a
setup-plot2
9 M: F- C+ a  Z$ S
. n* h+ \. F3 O# J* M" i- g
setup-plot3
' c$ E2 T0 ?! c& U, H
end
5 n8 v3 @& ?, I. P& [& a
% c; G0 h, V8 c' |1 U3 ^# t;;run time procedures/ U, N: H) A6 h4 u" U2 G

, o; s0 a) K% Eto go
( u  M  C9 b7 h* M
6 ^. X5 E. q- V+ x) e% o+ J' Pask turtles [do-business]
  F7 n6 l" ~; P. F( W
end
2 l; D; j# u6 q8 f$ n3 w- o3 Z) ~: A% S9 B0 G* e8 d
to do-business
/ L- ]* v8 k4 e$ e/ N3 `. z% I

4 f, Z. @8 p$ h! |
2 w4 N5 b- g, [rt random 360

! W4 E. z' L* }2 _$ G* Q/ z  w+ k1 |7 G3 w  D- B
fd 1

: ~% U+ |6 q, V% [7 b) U( Q/ ?: l: `2 D  e1 w5 y
ifelse(other turtles-here != nobody)[
& i6 @# D3 Z* X2 h' n6 A  g
0 [# }: N% W9 |4 ]7 z6 k
set customer one-of other turtles-here

- @; h2 K' i5 K1 c! d
/ H6 Z' J# o' T2 L;; set [customer] of customer myself

' T- D8 k, S! x& [
- ?3 n( S3 y4 _* g, M0 bset [trade-record-one] of self item (([who] of customer) - 1)
2 S( W7 ~  Z8 `! P+ S[trade-record-all]of self. s4 T) {9 K. }2 ]5 W$ I5 a/ o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# }: A* [* e% `  ]& K5 x
1 q, p% L0 j' P) V! r( rset [trade-record-one] of customer item (([who] of self) - 1)
6 }* U2 ]$ ~7 s  b[trade-record-all]of customer
4 ^( G! e) ^- P. Y" Y/ c) S; [

% j( L) y- }2 A# ]set [trade-record-one-len] of self length [trade-record-one] of self
# w* }5 m4 X* ^" ~: m( \- T

, {1 J: S8 m! h" aset trade-record-current( list (timer) (random money-upper-limit))
$ `5 S  m4 T! S9 j0 n$ ]. L; c

( Y# \7 d( I8 i: m# L: P* gask self [do-trust]
' h- V1 Y- f! W  J/ N  b;;
先求ij的信任度7 D1 y: r6 t% U) d
' T1 R' ~  P( D3 T' X: b
if ([trust-ok] of self)
$ i0 Y* |) v1 o5 @: r8 P1 r) _;;
根据ij的信任度来决定是否与j进行交易[
: T! E3 B) m9 H* Q- Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; _7 X% I- P3 O

6 |  M" U* N  |& k1 t% g  v+ r; q[

& D' C% N  k" \: a1 |. P5 F
+ W- E* n6 K' l" ndo-trade
2 g( |  s: T  `3 y3 R
( B) U' g/ B, c6 y8 M6 A
update-credibility-ijl

+ O* S7 Y' d7 ~
; W1 F( z$ d1 J6 M, ~5 Uupdate-credibility-list; _9 e3 d; U0 E. Y- {% f1 D" j

% R6 f6 O% C' c5 R9 q/ E( r! P3 d5 T% L  P& _+ P
update-global-reputation-list
9 b4 p" @3 n( [4 h7 z
: \8 A2 I8 J+ C5 r' I$ p$ f. ^
poll-class
  {* e0 r5 D5 N4 p2 R

" z4 c* g9 D( @& p$ vget-color

4 o5 T4 ^5 {& ?) E9 {/ v% g% W' ~, I. a# b
]]
7 ~1 ^+ T  ~4 P* [  g! `4 u, q: G1 F/ B- Y
;;
如果所得的信任度满足条件,则进行交易
- z/ ~- z, l# c# y1 l9 Y( t
# S* P* n! y+ [[

9 ~/ A; i# F) J; {& g2 D) `  |- I% p4 V
rt random 360

7 U2 g9 f: u9 M) @) q4 O5 L/ k: H! C
2 g- L/ V7 E0 }+ l& ~# F5 ]( kfd 1
7 q" M' s1 o! E7 I/ L5 d- t
# D  A, n8 N* ~7 w1 i: D" h( {8 e
]

) i7 v5 a" F2 ^# g0 `  S4 l
$ u) @2 X" @1 B9 @end

$ c6 J! r, o2 o
' G, a8 b9 T+ kto do-trust ' `# {% `- y5 \
set trust-ok False
; Q+ ~9 e' S( r* P6 ^2 E/ J) X, M+ Y& E' X

  f+ E  V& e2 m1 i/ ~let max-trade-times 0! w: H7 C6 W+ k% Z& X; I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], k' P" @, s7 a6 q( f, E: }
let max-trade-money 0
" ?; e. B1 S$ d# Q7 Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ K; r, U7 J- _- w* E- E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, y8 n1 N' J3 [- W! v* o. U& ^! p7 ~% j
& ^; w# N1 B0 H/ w1 s
get-global-proportion
$ f6 ^; M! k  Y4 `( ulet trust-value6 G- i# ~/ Z3 U6 b8 v# O3 Q& x
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)
" O5 }& p% o' \( j$ G1 \' Z
if(trust-value > trade-trust-value)
) r3 D0 Q4 s; E, ?% R[set trust-ok true]3 R. [6 {2 h% W" _$ Y5 v+ t* ]' N" z
end
! W8 k3 B4 k# z' }" S: K
$ d& L2 ]2 Y1 C! u( Qto get-global-proportion, o4 N4 ]" I7 C5 Q5 P6 ?; \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" k, j! w) [+ y
[set global-proportion 0]
/ g3 S; Y; X8 l[let i 0+ g( c% S0 u- E+ C& P) L
let sum-money 06 W& Z* b/ {  O$ h9 a- A( y' Z
while[ i < people]
% @+ y4 R' r# K1 [3 o9 ~[
& P7 m" C1 M* k8 Y* E8 v6 tif( length (item i
5 i7 }3 q) y6 E* _[trade-record-all] of customer) > 3 )

2 D) ~4 n2 O4 L9 A[
: T8 C9 r% D$ g  q* U) _6 k; a; Gset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), C4 z, ~& k% ^
]& L% b4 ^9 I' ?6 x+ l+ k* o3 T: q9 ^
]) j$ V9 c( D* z3 b& q8 m0 {
let j 0% W7 |' d' x& @9 f) |
let note 0( N( z6 d; q  a& l1 M6 s
while[ j < people]
; r- s' t4 ~' q# w. Q3 C, L) u( N$ H+ L[; ?" k& B, F% w- s8 M
if( length (item i
* C% O5 _8 h3 }* ^* R0 f[trade-record-all] of customer) > 3 )

: H: V, V; K& }0 G4 C[. g, L1 d8 _3 ^7 i4 z4 W  I# E& I4 t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 o# O5 w# N3 y3 _7 G& _* s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# H3 c" P& S! y9 z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 ^% Z# J  m, Y( n2 B, |]
. H) u9 Y& x3 d]
) x5 F$ a4 O: u0 d' ^% iset global-proportion note
) d: @+ ~! q7 `7 x# y5 l& j/ K: M, g]& z* V8 n" h3 U) W) I
end
" C' ^9 S6 V4 r! w
3 K- ?: T5 b- G# M+ z- yto do-trade
9 e" E6 g1 W3 `0 K/ ^# b$ x# B! S0 @6 q6 m;;
这个过程实际上是给双方作出评价的过程8 e! k+ ?  F" m; i- ~. d$ J& N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  A5 e/ p: T) D! h) c) B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 U- Z$ s( I3 Z" U  |$ ~/ uset trade-record-current lput(timer) trade-record-current
% d& _' N  i8 n: k. l;;
评价时间- F8 D7 T& }4 {& A1 @8 v, O
ask myself [/ h* |6 |# j& M6 f$ t( Q9 H5 J
update-local-reputation
! _- H  J( i/ vset trade-record-current lput([local-reputation] of myself) trade-record-current. c+ w$ C- _4 _
]; }) _, O6 r5 g) h
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ ~5 U2 x, e' l' J0 d;;
将此次交易的记录加入到trade-record-one: W# J9 x  b- N6 a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& _, s% L" |7 ?. ~8 A
let note (item 2 trade-record-current )
2 b5 K* }, c. C+ Iset trade-record-current3 y/ K) z1 C8 i9 E
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 V2 M3 H! m0 _0 P% H! D/ v! z$ nset trade-record-current
; ]* j# M1 _6 {+ Y( Z" N(replace-item 3 trade-record-current note)
6 ^3 _* a9 L+ L
6 b' g0 N" E( K; u
8 j% |/ ]0 Y" g8 U
ask customer [
- t$ b+ g1 ~$ b( Z$ |2 s% D# uupdate-local-reputation
% Z5 E# ?; X( q$ H3 Fset trade-record-current
0 I; m/ ?& r1 y( k  k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 i( ]$ w; X: J$ S/ E/ p' W. v]% V( n4 E  m0 S' K: D% o

! [# \* k' x7 K) _0 [
. h& z9 C2 M8 l6 U0 [2 ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 D% T# }- n. c0 A$ f. n& w
9 T& E4 N% {" M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 }6 O6 Q! ^% V2 ~8 F, I
;;
将此次交易的记录加入到customertrade-record-all
6 q( [# v2 ~# H# o% Aend* y% ]1 p0 _4 R. T9 O1 J9 p+ m

; |. R+ X4 H. y) m2 a: Q$ hto update-local-reputation. U+ u' }* ^! _2 T1 P: J0 I1 f
set [trade-record-one-len] of myself length [trade-record-one] of myself
( v: D. U$ [6 Y  t, ]- }
) @$ b8 J. U/ O  ^' R$ Z$ e$ b2 J/ Y3 H0 c' P& u  G$ t
;;if [trade-record-one-len] of myself > 3
9 s8 Q$ V1 W4 r) h: X$ e
update-neighbor-total
/ j: P* d0 L1 E2 K2 K;;
更新邻居节点的数目,在此进行: B- L0 E7 x8 k5 y! i
let i 3
! b. v; x- e. [- P. plet sum-time 0
3 j) x; J8 L, g) a9 Fwhile[i < [trade-record-one-len] of myself]
7 y6 n8 |3 ^" Q7 L: B/ x[
8 Q' W/ e0 M+ y' u! X" Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 V; A4 X/ o3 Y
set i8 a# a3 ~  x5 }) p( d$ f0 @: L7 ?
( i + 1)

- h% A/ I4 a) M5 v9 `5 z7 m]
7 ^) |$ J) R0 n: ^  K! c+ o- wlet j 37 K7 b. K9 h! m3 @5 u3 p
let sum-money 0
! b/ m' m. S& k" Swhile[j < [trade-record-one-len] of myself]
5 R/ h: D& R2 d) Q2 V# b1 d[( x* T* w8 {( ?% _* \, O3 X
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)9 G9 [6 _1 ]$ c. _
set j
2 V. g6 R8 B# N7 j; {( j + 1)

3 U- I/ O) e7 D% p]
- }1 A$ c: D* ~: w) @5 _- Xlet k 3
1 y& Z+ J2 _9 \; d: K4 hlet power 0
0 p5 _% U# }8 J( o0 j) h9 w, p% [let local 0
1 E3 V; l; Z; t$ b0 Zwhile [k <[trade-record-one-len] of myself]0 z1 S4 _  r* Y+ V( v3 Z
[, z% X3 ^# }9 s) O
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)
& Q/ j, @* E* Q6 e2 l7 vset k (k + 1)! {! |: y3 n; R1 J+ ]% b% b6 J* j
]
4 O. F: p1 C$ w% h9 c" i/ Qset [local-reputation] of myself (local)' D) z* F8 O; r2 \: G% p& X
end" w7 B5 }: j1 Z) P

, i: R% |4 u# N2 k% Yto update-neighbor-total
5 c; s( l. z+ {* l  ^6 k5 }. S7 ]
" e1 v; h, X2 E& j3 Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# G3 Y. L: i  ]0 o0 b
" L' n& D! a# B4 `% u

6 X) R4 \( ]" y4 ]  ]& W' gend2 s+ @- L% ~3 C4 d9 g' A

# |* \! L2 y# v' @' Yto update-credibility-ijl + A+ x0 B# F. [5 t* m8 {
, {' J; L/ o! G2 q
;;
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 m; \, W3 q' j6 z6 ~4 t! P9 G1 m
let l 0
# d. Q, b/ B2 z4 Jwhile[ l < people ]9 g( }6 C2 \4 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. X- Z2 W! n  z
[4 R/ ?& I7 m. w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! m/ }  m+ f. F; ?" r  L8 d0 \6 z& H
if (trade-record-one-j-l-len > 3): I1 A' o- I6 F* d$ \  ?
[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: L! m0 S1 J! {( Y3 P$ q
let i 3
; R8 p) |' C, A2 n2 W0 Y2 V7 Alet sum-time 01 v: |4 `7 {/ p
while[i < trade-record-one-len]
- j2 u0 e/ U. r" p5 r7 e! B[4 ]" Z! _8 c( g4 X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ g0 N5 n  }6 `. Zset i
9 s* W( t% H, H# t! b0 V( i + 1)

/ V6 w: z* n. I1 ]" @) L]( S! Z7 \: l! s, R, V* f
let credibility-i-j-l 0$ \# L4 m1 o: i0 j+ u3 Q
;;i
评价(jjl的评价)
- ?( d: `! N- }: J$ Olet j 39 b  q- q: F1 [$ `" L- A0 o
let k 4
3 z7 I! @' ]3 M" o6 Jwhile[j < trade-record-one-len]- e- c' ~: o  ]. |
[" m# ^$ a$ z0 B* ?  X
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
( @4 V7 e. R' f' Oset 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)
( N3 N4 O$ p  o# x+ kset j
: z7 W1 F* y6 U9 {" ^& P6 ]( j + 1)

1 s8 a2 {& a( a$ V# j8 q0 `]) V3 e+ C! @3 q( f, B
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 ))
$ P0 S4 C  v1 \! b! e
- k( W( Q$ `7 ~% o/ N" j

0 D- A$ |" m# @! tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 x! Q# M3 Z9 O. i6 X
;;
及时更新il的评价质量的评价
. P2 P5 W0 U7 Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ H3 N" H1 k4 O5 N) }
set l (l + 1)6 p. r; v% v4 `0 o: H
]
1 e) ~( \" e8 F& yend. D, o6 n/ `* T

9 y; A# |+ O1 q; j( Q* U) |to update-credibility-list
3 R2 }9 i1 m& Q+ h, xlet i 0& @" R5 l  N6 A" p; O: c/ ^: p
while[i < people]
# {9 p$ v7 b; B- A  }5 b, V[0 z9 T. B& U) @8 D: g8 w/ b
let j 0
8 a9 D1 f3 |8 G6 }: Y4 u) Nlet note 0
% V8 a1 Z! `) b; w8 j, flet k 0/ M9 }: ?* }3 L  c3 B8 ^
;;
计作出过评价的邻居节点的数目
' _7 U3 ]% ^4 v6 C! ~while[j < people]- h/ B  M2 g5 A4 E% K
[3 R. t# M7 x9 P- i2 ~0 k
if (item j( [credibility] of turtle (i + 1)) != -1)- n( L5 u3 ^9 t* D1 F
;;
判断是否给本turtle的评价质量做出过评价的节点" W# N' j$ I9 ~
[set note (note + item j ([credibility]of turtle (i + 1)))
% f. G( u' _/ b3 Z5 [2 r% d;;*(exp (-(people - 2)))/(people - 2))]

/ B  I6 M" i8 L2 r9 G" @set k (k + 1)0 q% v, r% ~0 m! T! T7 j) L
]
' ^4 i$ `5 e5 x0 y9 @5 ^0 }set j (j + 1)
' K* c8 h. o+ z" a- V]
; y& Y7 U( M" Sset note (note *(exp (- (1 / k)))/ k)$ d2 J! c( b+ L7 Z: |* H
set credibility-list (replace-item i credibility-list note)
* m2 s9 I7 Y. X9 x2 u8 A0 `set i (i + 1)# M( v- k: s9 ]0 }7 b8 r% z  b
]" V$ w3 ]4 y( Q( j% q
end7 T4 @$ V! f0 a# q4 h# D  B4 |
* _2 [: E9 l' K( c% h# x
to update-global-reputation-list# ]1 [* o, \2 z# M7 s# T
let j 0
3 r! t; _/ R- i- W, owhile[j < people]1 k3 i1 J6 o  g
[
4 ]: q, O" A1 l. Q! C) o7 qlet new 04 U. O$ H+ ~6 j5 s7 `
;;
暂存新的一个全局声誉
: g( I( o1 s1 R' m8 T) Klet i 0$ L7 Q5 V( H- d% W: r% g* s
let sum-money 0& n$ [5 a3 f0 v+ j  D4 L7 l
let credibility-money 0
' c. V3 b: G1 d2 Z9 V  z# Xwhile [i < people]
8 @0 Y3 Z, [$ H[( k  r  B, \' n% Z+ R* B; f+ Z1 f
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 H6 t( h9 Y* u" r5 k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 q, S# B0 C% \* O  A
set i (i + 1)
$ v# _) B' W- D]4 C- b# Z* D4 r/ Z3 \3 o. b
let k 04 j+ a( y' i' j
let new1 0
5 v8 ?7 y1 U% d8 |& hwhile [k < people]4 r( e9 s, j  w
[
4 N/ M. M2 a0 F5 m, P2 _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), L9 p  B* z# X3 h5 b- S
set k (k + 1)
4 I6 y* S: K7 k0 `1 R+ |]# D1 p+ [1 A) n
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 z) F1 _$ {4 c: U/ Vset global-reputation-list (replace-item j global-reputation-list new)
+ s( r" l- E: H* ~: G2 y% Hset j (j + 1)
& t4 V( U1 f+ J/ l& Y. \]! }" b' Y6 X& V" x6 b
end
% Y$ n# P6 R, R5 G: ~, t) a
5 z- Z. r- e! W; L9 _# H
/ O1 R1 F  U; |2 z  _0 u3 @' ^( T1 W0 c( Q& _2 [
to get-color
2 H  N5 b1 h) `* h9 {1 f% n( T% T6 W
5 _7 I% d+ u: B; Q2 g; R( ^! \6 y) Nset color blue

2 F! b5 d4 B7 _0 G6 Q3 {, z4 _end
1 w4 \, G( Y2 B
* w/ F; T8 O& `0 J' P3 qto poll-class
% W7 ?3 X" a0 }9 Z' ~+ Xend
+ v& B% w. W( t. ^, `
  Z9 j# Q1 {- j& Bto setup-plot1: K7 E9 U  v) a1 v3 b1 b# I9 }
8 i! E/ M- ~* U+ k# o
set-current-plot "Trends-of-Local-reputation"
  k$ I- q! f* s- e2 W
0 n3 e' I& U3 b9 a, C
set-plot-x-range 0 xmax
+ A* K1 I( F0 u
# g1 n9 p! P( u8 @
set-plot-y-range 0.0 ymax
  p5 g6 b% y1 i0 ^
end
4 O. w; g0 I! y  D8 a/ L7 O  ?" b! A; d
0 H) r( I7 h; B  Nto setup-plot2( }% |( H/ M. m6 w. |

7 A+ _) `8 h) Xset-current-plot "Trends-of-global-reputation"
, D3 I: \3 B1 \

6 I3 q% E; e" p. d+ J5 f# I; A: _set-plot-x-range 0 xmax
$ r; K7 L6 k, V/ B- ~: N' c! \

6 w! N8 h) s* V' S0 L' L1 tset-plot-y-range 0.0 ymax
2 x' i3 B5 t$ n; ]) L8 {% `, X
end. W' y) f" @$ e' V+ W1 }& x3 M
6 d$ H; C& F. s$ i% o1 x, M
to setup-plot3
+ f) C6 N, ^6 f
/ b1 G' R; E% ?$ }+ b2 p* qset-current-plot "Trends-of-credibility"
, P" m9 E" {6 f9 Q8 V
" Q6 \* Q" G! E6 m
set-plot-x-range 0 xmax

, a: r/ G1 c+ E0 n9 Z3 L1 r! X) [+ c: O* P! e- u- a, T- H' p& j
set-plot-y-range 0.0 ymax
' v' ~6 p; d; C5 u2 o( i- Y
end
. \; L, [8 E' M7 Z: ]2 s# t$ T
/ o5 ~, j( V; B8 H+ G/ {to do-plots: D1 M0 ~  D  A  ^1 S
set-current-plot "Trends-of-Local-reputation"
) n# s+ ]1 l( g7 v: Y# J' Q) Fset-current-plot-pen "Honest service"
; ?# m" ]' M) K! _* a- r8 oend) y3 _" H8 {- [4 B0 ]2 X4 r
2 A  F; |2 y* m4 ^- [& U1 c
[ 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.8 r2 V3 C5 Q7 q5 T7 i9 j
8 H# t3 ^: Y  V7 N/ K. u: N! v1 b3 o
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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